Merge changes Id0665190,Ic5427bcb

* changes:
  Android.mk: Pick up sdm845
  sdm845: AU_LINUX_ANDROID_LA.UM.6.3.R1.06.00.01.301.010

138 files changed, 27560 insertions, 0 deletions

diff --git a/Android.mk b/Android.mk
index e38d666..b232cc9 100644
--- a/Android.mk
+++ b/Android.mk
@@ -37,5 +37,9 @@ ifneq ($(BOARD_IS_AUTOMOTIVE),true)
       endif
     endif #BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET
 
+    ifneq ($(filter sdm845 ,$(TARGET_BOARD_PLATFORM)),)
+       include $(call all-named-subdir-makefiles,sdm845)
+    endif
+
   endif #BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
 endif
diff --git a/sdm845/Android.mk b/sdm845/Android.mk
new file mode 100644
index 0000000..4d04172
--- /dev/null
+++ b/sdm845/Android.mk
@@ -0,0 +1,7 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+LOCAL_PATH := $(call my-dir)
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
+else
+$(error no gps)
+endif
diff --git a/sdm845/CleanSpec.mk b/sdm845/CleanSpec.mk
new file mode 100644
index 0000000..dd1849d
--- /dev/null
+++ b/sdm845/CleanSpec.mk
@@ -0,0 +1,50 @@
+# Copyright (C) 2007 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list.  These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+#     $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+#     $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list.  E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libloc_api*)
diff --git a/sdm845/Makefile.am b/sdm845/Makefile.am
new file mode 100644
index 0000000..7bc06b1
--- /dev/null
+++ b/sdm845/Makefile.am
@@ -0,0 +1,10 @@
+# Makefile.am - Automake script for gps loc_api
+#
+
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = core loc_api
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = loc-hal.pc
+EXTRA_DIST = $(pkgconfig_DATA)
diff --git a/sdm845/android/AGnss.cpp b/sdm845/android/AGnss.cpp
new file mode 100644
index 0000000..c497ed4
--- /dev/null
+++ b/sdm845/android/AGnss.cpp
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_AGnssInterface"
+
+#include <log_util.h>
+#include "Gnss.h"
+#include "AGnss.h"
+#include <gps_extended_c.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+sp<IAGnssCallback> AGnss::sAGnssCbIface = nullptr;
+
+AGnss::AGnss(Gnss* gnss) : mGnss(gnss) {
+}
+
+void AGnss::agnssStatusIpV4Cb(IAGnssCallback::AGnssStatusIpV4 status){
+
+    sAGnssCbIface->agnssStatusIpV4Cb(status);
+}
+
+Return<void> AGnss::setCallback(const sp<IAGnssCallback>& callback) {
+
+    if(mGnss == nullptr || mGnss->getGnssInterface() == nullptr){
+        LOC_LOGE("Null GNSS interface");
+        return Void();
+    }
+
+    // Save the interface
+    sAGnssCbIface = callback;
+
+    mGnss->getGnssInterface()->agpsInit((void*)agnssStatusIpV4Cb);
+    return Void();
+}
+
+Return<bool> AGnss::dataConnClosed() {
+
+    if(mGnss == nullptr || mGnss->getGnssInterface() == nullptr){
+        LOC_LOGE("Null GNSS interface");
+        return false;
+    }
+
+    mGnss->getGnssInterface()->agpsDataConnClosed(LOC_AGPS_TYPE_SUPL);
+    return true;
+}
+
+Return<bool> AGnss::dataConnFailed() {
+
+    if(mGnss == nullptr || mGnss->getGnssInterface() == nullptr){
+        LOC_LOGE("Null GNSS interface");
+        return false;
+    }
+
+    mGnss->getGnssInterface()->agpsDataConnFailed(LOC_AGPS_TYPE_SUPL);
+    return true;
+}
+
+Return<bool> AGnss::dataConnOpen(const hidl_string& apn,
+        IAGnss::ApnIpType apnIpType) {
+
+    if(mGnss == nullptr || mGnss->getGnssInterface() == nullptr){
+        LOC_LOGE("Null GNSS interface");
+        return false;
+    }
+
+    /* Validate */
+    if(apn.empty()){
+        LOC_LOGE("Invalid APN");
+        return false;
+    }
+
+    LOC_LOGD("dataConnOpen APN name = [%s]", apn.c_str());
+
+    mGnss->getGnssInterface()->agpsDataConnOpen(
+            LOC_AGPS_TYPE_SUPL, apn.c_str(), apn.size(), (int)apnIpType);
+    return true;
+}
+
+Return<bool> AGnss::setServer(IAGnssCallback::AGnssType type,
+                              const hidl_string& hostname,
+                              int32_t port) {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT;
+    config.assistanceServer.size = sizeof(GnssConfigSetAssistanceServer);
+    if (type == IAGnssCallback::AGnssType::TYPE_SUPL) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_SUPL;
+    } else if (type == IAGnssCallback::AGnssType::TYPE_C2K) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_C2K;
+    } else {
+        LOC_LOGE("%s]: invalid AGnssType: %d", __FUNCTION__, static_cast<int>(type));
+        return false;
+    }
+    config.assistanceServer.hostName = strdup(hostname.c_str());
+    config.assistanceServer.port = port;
+    return mGnss->updateConfiguration(config);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/AGnss.h b/sdm845/android/AGnss.h
new file mode 100644
index 0000000..f4216b0
--- /dev/null
+++ b/sdm845/android/AGnss.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_AGNSS_H
+#define ANDROID_HARDWARE_GNSS_V1_1_AGNSS_H
+
+#include <android/hardware/gnss/1.0/IAGnss.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IAGnss;
+using ::android::hardware::gnss::V1_0::IAGnssCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Gnss;
+struct AGnss : public IAGnss {
+
+    AGnss(Gnss* gnss);
+    ~AGnss() = default;
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IAGnss interface follow.
+     * These declarations were generated from IAGnss.hal.
+     */
+    Return<void> setCallback(const sp<IAGnssCallback>& callback) override;
+
+    Return<bool> dataConnClosed() override;
+
+    Return<bool> dataConnFailed() override;
+
+    Return<bool> dataConnOpen(const hidl_string& apn,
+            IAGnss::ApnIpType apnIpType) override;
+
+    Return<bool> setServer(IAGnssCallback::AGnssType type,
+                         const hidl_string& hostname, int32_t port) override;
+
+    /* Data call setup callback passed down to GNSS HAL implementation */
+    static void agnssStatusIpV4Cb(IAGnssCallback::AGnssStatusIpV4 status);
+
+ private:
+    Gnss* mGnss = nullptr;
+    static sp<IAGnssCallback> sAGnssCbIface;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_AGNSS_H
diff --git a/sdm845/android/AGnssRil.cpp b/sdm845/android/AGnssRil.cpp
new file mode 100644
index 0000000..0cf79a3
--- /dev/null
+++ b/sdm845/android/AGnssRil.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc__AGnssRilInterface"
+
+#include <log_util.h>
+#include <dlfcn.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sstream>
+#include <string>
+#include "Gnss.h"
+#include "AGnssRil.h"
+typedef void* (getLocationInterface)();
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+static bool sendConnectionEvent(const bool connected, const uint8_t type);
+
+AGnssRil::AGnssRil(Gnss* gnss) : mGnss(gnss) {
+    ENTRY_LOG_CALLFLOW();
+}
+
+AGnssRil::~AGnssRil() {
+    ENTRY_LOG_CALLFLOW();
+}
+
+Return<bool> AGnssRil::updateNetworkState(bool connected, NetworkType type, bool roaming) {
+    ENTRY_LOG_CALLFLOW();
+
+    // for XTRA
+    sendConnectionEvent(connected, (uint8_t)type);
+
+    return true;
+}
+
+// for XTRA
+static inline int createSocket() {
+    int socketFd = -1;
+
+    if ((socketFd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
+        LOC_LOGe("create socket error. reason:%s", strerror(errno));
+
+     } else {
+        const char* socketPath = "/data/misc/location/xtra/socket_hal_xtra";
+        struct sockaddr_un addr = { .sun_family = AF_UNIX };
+        snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socketPath);
+
+        if (::connect(socketFd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+            LOC_LOGe("cannot connect to XTRA. reason:%s", strerror(errno));
+            if (::close(socketFd)) {
+                LOC_LOGe("close socket error. reason:%s", strerror(errno));
+            }
+            socketFd = -1;
+        }
+    }
+
+    return socketFd;
+}
+
+static inline void closeSocket(const int socketFd) {
+    if (socketFd >= 0) {
+        if(::close(socketFd)) {
+            LOC_LOGe("close socket error. reason:%s", strerror(errno));
+        }
+    }
+}
+
+static inline bool sendConnectionEvent(const bool connected, const uint8_t type) {
+    int socketFd = createSocket();
+    if (socketFd < 0) {
+        LOC_LOGe("XTRA unreachable. sending failed.");
+        return false;
+    }
+
+    std::stringstream ss;
+    ss <<  "connection";
+    ss << " " << (connected ? "1" : "0");
+    ss << " " << (int)type;
+    ss << "\n"; // append seperator
+
+    const std::string& data = ss.str();
+    int remain = data.length();
+    ssize_t sent = 0;
+
+    while (remain > 0 &&
+          (sent = ::send(socketFd, data.c_str() + (data.length() - remain),
+                       remain, MSG_NOSIGNAL)) > 0) {
+        remain -= sent;
+    }
+
+    if (sent < 0) {
+        LOC_LOGe("sending error. reason:%s", strerror(errno));
+    }
+
+    closeSocket(socketFd);
+
+    return (remain == 0);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/AGnssRil.h b/sdm845/android/AGnssRil.h
new file mode 100644
index 0000000..61216d8
--- /dev/null
+++ b/sdm845/android/AGnssRil.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_0_AGNSSRIL_H_
+#define ANDROID_HARDWARE_GNSS_V1_0_AGNSSRIL_H_
+
+#include <android/hardware/gnss/1.0/IAGnssRil.h>
+#include <hidl/Status.h>
+#include <location_interface.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IAGnssRil;
+using ::android::hardware::gnss::V1_0::IAGnssRilCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Gnss;
+/*
+ * Extended interface for AGNSS RIL support. An Assisted GNSS Radio Interface Layer interface
+ * allows the GNSS chipset to request radio interface layer information from Android platform.
+ * Examples of such information are reference location, unique subscriber ID, phone number string
+ * and network availability changes. Also contains wrapper methods to allow methods from
+ * IAGnssiRilCallback interface to be passed into the conventional implementation of the GNSS HAL.
+ */
+struct AGnssRil : public IAGnssRil {
+    AGnssRil(Gnss* gnss);
+    ~AGnssRil();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IAGnssRil follow.
+     * These declarations were generated from IAGnssRil.hal.
+     */
+    Return<void> setCallback(const sp<IAGnssRilCallback>& /*callback*/) override {
+        return Void();
+    }
+    Return<void> setRefLocation(const IAGnssRil::AGnssRefLocation& /*agnssReflocation*/) override {
+        return Void();
+    }
+    Return<bool> setSetId(IAGnssRil::SetIDType /*type*/, const hidl_string& /*setid*/) override {
+        return false;
+    }
+    Return<bool> updateNetworkAvailability(bool /*available*/,
+                                    const hidl_string& /*apn*/) override {
+        return false;
+    }
+    Return<bool> updateNetworkState(bool connected, NetworkType type, bool roaming) override;
+
+ private:
+    Gnss* mGnss = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_0_AGNSSRIL_H_
diff --git a/sdm845/android/Android.mk b/sdm845/android/Android.mk
new file mode 100644
index 0000000..e3c3d50
--- /dev/null
+++ b/sdm845/android/Android.mk
@@ -0,0 +1,79 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.gnss@1.0-impl-qti
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    AGnss.cpp \
+    Gnss.cpp \
+    GnssBatching.cpp \
+    GnssGeofencing.cpp \
+    GnssMeasurement.cpp \
+    GnssNi.cpp \
+    GnssConfiguration.cpp \
+    GnssDebug.cpp \
+    AGnssRil.cpp
+
+LOCAL_SRC_FILES += \
+    location_api/LocationUtil.cpp \
+    location_api/GnssAPIClient.cpp \
+    location_api/GeofenceAPIClient.cpp \
+    location_api/BatchingAPIClient.cpp \
+    location_api/MeasurementAPIClient.cpp \
+
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/location_api \
+    $(TARGET_OUT_HEADERS)/gps.utils \
+    $(TARGET_OUT_HEADERS)/libloc_core \
+    $(TARGET_OUT_HEADERS)/libloc_pla \
+    $(TARGET_OUT_HEADERS)/liblocation_api \
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libhidlbase \
+    libhidltransport \
+    libhwbinder \
+    libutils \
+    android.hardware.gnss@1.0 \
+
+LOCAL_SHARED_LIBRARIES += \
+    libloc_core \
+    libgps.utils \
+    libdl \
+    libloc_pla \
+    liblocation_api \
+
+include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.gnss@1.0-service-qti
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_EXECUTABLES)
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_INIT_RC := android.hardware.gnss@1.0-service-qti.rc
+LOCAL_SRC_FILES := \
+    service.cpp \
+
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/location_api \
+    $(TARGET_OUT_HEADERS)/gps.utils \
+    $(TARGET_OUT_HEADERS)/libloc_core \
+    $(TARGET_OUT_HEADERS)/libloc_pla \
+    $(TARGET_OUT_HEADERS)/liblocation_api \
+
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libcutils \
+    libdl \
+    libbase \
+    libutils \
+
+LOCAL_SHARED_LIBRARIES += \
+    libhwbinder \
+    libhidlbase \
+    libhidltransport \
+    android.hardware.gnss@1.0 \
+
+include $(BUILD_EXECUTABLE)
diff --git a/sdm845/android/Gnss.cpp b/sdm845/android/Gnss.cpp
new file mode 100644
index 0000000..9b2e7dd
--- /dev/null
+++ b/sdm845/android/Gnss.cpp
@@ -0,0 +1,338 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssInterface"
+
+#include <log_util.h>
+#include <dlfcn.h>
+#include "Gnss.h"
+typedef void* (getLocationInterface)();
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void Gnss::GnssDeathRecipient::serviceDied(uint64_t cookie, const wp<IBase>& who) {
+    LOC_LOGE("%s] service died. cookie: %llu, who: %p",
+            __FUNCTION__, static_cast<unsigned long long>(cookie), &who);
+    if (mGnss != nullptr) {
+        mGnss->stop();
+        mGnss->cleanup();
+    }
+}
+
+Gnss::Gnss() {
+    ENTRY_LOG_CALLFLOW();
+    // clear pending GnssConfig
+    memset(&mPendingConfig, 0, sizeof(GnssConfig));
+
+    mGnssDeathRecipient = new GnssDeathRecipient(this);
+}
+
+Gnss::~Gnss() {
+    ENTRY_LOG_CALLFLOW();
+    if (mApi != nullptr) {
+        delete mApi;
+        mApi = nullptr;
+    }
+}
+
+GnssAPIClient* Gnss::getApi() {
+    if (mApi == nullptr && (mGnssCbIface != nullptr || mGnssNiCbIface != nullptr)) {
+        mApi = new GnssAPIClient(mGnssCbIface, mGnssNiCbIface);
+        if (mApi == nullptr) {
+            LOC_LOGE("%s] faild to create GnssAPIClient", __FUNCTION__);
+            return mApi;
+        }
+
+        if (mPendingConfig.size == sizeof(GnssConfig)) {
+            // we have pending GnssConfig
+            mApi->gnssConfigurationUpdate(mPendingConfig);
+            // clear size to invalid mPendingConfig
+            mPendingConfig.size = 0;
+            if (mPendingConfig.assistanceServer.hostName != nullptr) {
+                free((void*)mPendingConfig.assistanceServer.hostName);
+            }
+        }
+    }
+    if (mApi == nullptr) {
+        LOC_LOGW("%s] GnssAPIClient is not ready", __FUNCTION__);
+    }
+    return mApi;
+}
+
+GnssInterface* Gnss::getGnssInterface() {
+    static bool getGnssInterfaceFailed = false;
+    if (nullptr == mGnssInterface && !getGnssInterfaceFailed) {
+        LOC_LOGD("%s]: loading libgnss.so::getGnssInterface ...", __func__);
+        getLocationInterface* getter = NULL;
+        const char *error = NULL;
+        dlerror();
+        void *handle = dlopen("libgnss.so", RTLD_NOW);
+        if (NULL == handle || (error = dlerror()) != NULL)  {
+            LOC_LOGW("dlopen for libgnss.so failed, error = %s", error);
+        } else {
+            getter = (getLocationInterface*)dlsym(handle, "getGnssInterface");
+            if ((error = dlerror()) != NULL)  {
+                LOC_LOGW("dlsym for libgnss.so::getGnssInterface failed, error = %s", error);
+                getter = NULL;
+            }
+        }
+
+        if (NULL == getter) {
+            getGnssInterfaceFailed = true;
+        } else {
+            mGnssInterface = (GnssInterface*)(*getter)();
+        }
+    }
+    return mGnssInterface;
+}
+
+Return<bool> Gnss::setCallback(const sp<IGnssCallback>& callback)  {
+    ENTRY_LOG_CALLFLOW();
+    if (mGnssCbIface != nullptr) {
+        mGnssCbIface->unlinkToDeath(mGnssDeathRecipient);
+    }
+    mGnssCbIface = callback;
+    if (mGnssCbIface != nullptr) {
+        mGnssCbIface->linkToDeath(mGnssDeathRecipient, 0 /*cookie*/);
+    }
+
+    GnssAPIClient* api = getApi();
+    if (api != nullptr) {
+        api->gnssUpdateCallbacks(mGnssCbIface, mGnssNiCbIface);
+        api->locAPIEnable(LOCATION_TECHNOLOGY_TYPE_GNSS);
+        api->requestCapabilities();
+    }
+    return true;
+}
+
+Return<bool> Gnss::setGnssNiCb(const sp<IGnssNiCallback>& callback) {
+    ENTRY_LOG_CALLFLOW();
+    mGnssNiCbIface = callback;
+    GnssAPIClient* api = getApi();
+    if (api != nullptr) {
+        api->gnssUpdateCallbacks(mGnssCbIface, mGnssNiCbIface);
+    }
+    return true;
+}
+
+Return<bool> Gnss::updateConfiguration(GnssConfig& gnssConfig) {
+    ENTRY_LOG_CALLFLOW();
+    GnssAPIClient* api = getApi();
+    if (api) {
+        api->locAPIGnssUpdateConfig(gnssConfig);
+    } else if (gnssConfig.flags != 0) {
+        // api is not ready yet, update mPendingConfig with gnssConfig
+        mPendingConfig.size = sizeof(GnssConfig);
+
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT;
+            mPendingConfig.gpsLock = gnssConfig.gpsLock;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT;
+            mPendingConfig.suplVersion = gnssConfig.suplVersion;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT;
+            mPendingConfig.assistanceServer.size = sizeof(GnssConfigSetAssistanceServer);
+            mPendingConfig.assistanceServer.type = gnssConfig.assistanceServer.type;
+            if (mPendingConfig.assistanceServer.hostName != nullptr) {
+                free((void*)mPendingConfig.assistanceServer.hostName);
+                mPendingConfig.assistanceServer.hostName =
+                    strdup(gnssConfig.assistanceServer.hostName);
+            }
+            mPendingConfig.assistanceServer.port = gnssConfig.assistanceServer.port;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT;
+            mPendingConfig.lppProfile = gnssConfig.lppProfile;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT;
+            mPendingConfig.lppeControlPlaneMask = gnssConfig.lppeControlPlaneMask;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT;
+            mPendingConfig.lppeUserPlaneMask = gnssConfig.lppeUserPlaneMask;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT;
+            mPendingConfig.aGlonassPositionProtocolMask = gnssConfig.aGlonassPositionProtocolMask;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT;
+            mPendingConfig.emergencyPdnForEmergencySupl = gnssConfig.emergencyPdnForEmergencySupl;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT;
+            mPendingConfig.suplEmergencyServices = gnssConfig.suplEmergencyServices;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_SUPL_MODE_BIT;
+            mPendingConfig.suplModeMask = gnssConfig.suplModeMask;
+        }
+    }
+    return true;
+}
+
+Return<bool> Gnss::start()  {
+    ENTRY_LOG_CALLFLOW();
+    bool retVal = false;
+    GnssAPIClient* api = getApi();
+    if (api) {
+        retVal = api->gnssStart();
+    }
+    return retVal;
+}
+
+Return<bool> Gnss::stop()  {
+    ENTRY_LOG_CALLFLOW();
+    bool retVal = false;
+    GnssAPIClient* api = getApi();
+    if (api) {
+        retVal = api->gnssStop();
+    }
+    return retVal;
+}
+
+Return<void> Gnss::cleanup()  {
+    ENTRY_LOG_CALLFLOW();
+
+    if (mApi != nullptr) {
+        mApi->locAPIDisable();
+    }
+
+    return Void();
+}
+
+Return<bool> Gnss::injectLocation(double latitudeDegrees,
+                                  double longitudeDegrees,
+                                  float accuracyMeters)  {
+    ENTRY_LOG_CALLFLOW();
+    GnssInterface* gnssInterface = getGnssInterface();
+    if (nullptr != gnssInterface) {
+        gnssInterface->injectLocation(latitudeDegrees, longitudeDegrees, accuracyMeters);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+Return<bool> Gnss::injectTime(int64_t timeMs, int64_t timeReferenceMs,
+                              int32_t uncertaintyMs) {
+    ENTRY_LOG_CALLFLOW();
+    GnssInterface* gnssInterface = getGnssInterface();
+    if (nullptr != gnssInterface) {
+        gnssInterface->injectTime(timeMs, timeReferenceMs, uncertaintyMs);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+Return<void> Gnss::deleteAidingData(IGnss::GnssAidingData aidingDataFlags)  {
+    ENTRY_LOG_CALLFLOW();
+    GnssAPIClient* api = getApi();
+    if (api) {
+        api->gnssDeleteAidingData(aidingDataFlags);
+    }
+    return Void();
+}
+
+Return<bool> Gnss::setPositionMode(IGnss::GnssPositionMode mode,
+                                   IGnss::GnssPositionRecurrence recurrence,
+                                   uint32_t minIntervalMs,
+                                   uint32_t preferredAccuracyMeters,
+                                   uint32_t preferredTimeMs)  {
+    ENTRY_LOG_CALLFLOW();
+    bool retVal = false;
+    GnssAPIClient* api = getApi();
+    if (api) {
+        retVal = api->gnssSetPositionMode(mode, recurrence, minIntervalMs,
+                preferredAccuracyMeters, preferredTimeMs);
+    }
+    return retVal;
+}
+
+Return<sp<IAGnss>> Gnss::getExtensionAGnss()  {
+    ENTRY_LOG_CALLFLOW();
+    mAGnssIface = new AGnss(this);
+    return mAGnssIface;
+}
+
+Return<sp<IGnssNi>> Gnss::getExtensionGnssNi()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssNi = new GnssNi(this);
+    return mGnssNi;
+}
+
+Return<sp<IGnssMeasurement>> Gnss::getExtensionGnssMeasurement() {
+    ENTRY_LOG_CALLFLOW();
+    mGnssMeasurement = new GnssMeasurement();
+    return mGnssMeasurement;
+}
+
+Return<sp<IGnssConfiguration>> Gnss::getExtensionGnssConfiguration()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssConfig = new GnssConfiguration(this);
+    return mGnssConfig;
+}
+
+Return<sp<IGnssGeofencing>> Gnss::getExtensionGnssGeofencing()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssGeofencingIface = new GnssGeofencing();
+    return mGnssGeofencingIface;
+}
+
+Return<sp<IGnssBatching>> Gnss::getExtensionGnssBatching()  {
+    mGnssBatching = new GnssBatching();
+    return mGnssBatching;
+}
+
+Return<sp<IGnssDebug>> Gnss::getExtensionGnssDebug() {
+    ENTRY_LOG_CALLFLOW();
+    mGnssDebug = new GnssDebug(this);
+    return mGnssDebug;
+}
+
+Return<sp<IAGnssRil>> Gnss::getExtensionAGnssRil() {
+    mGnssRil = new AGnssRil(this);
+    return mGnssRil;
+}
+
+IGnss* HIDL_FETCH_IGnss(const char* hal) {
+    ENTRY_LOG_CALLFLOW();
+    IGnss* iface = nullptr;
+    iface = new Gnss();
+    if (iface == nullptr) {
+        LOC_LOGE("%s]: failed to get %s", __FUNCTION__, hal);
+    }
+    return iface;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/Gnss.h b/sdm845/android/Gnss.h
new file mode 100644
index 0000000..e4589d6
--- /dev/null
+++ b/sdm845/android/Gnss.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSS_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSS_H
+
+#include <AGnss.h>
+#include <AGnssRil.h>
+#include <GnssBatching.h>
+#include <GnssConfiguration.h>
+#include <GnssGeofencing.h>
+#include <GnssMeasurement.h>
+#include <GnssNi.h>
+#include <GnssDebug.h>
+
+#include <android/hardware/gnss/1.0/IGnss.h>
+#include <hidl/Status.h>
+
+#include <GnssAPIClient.h>
+#include <location_interface.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Gnss : public IGnss {
+    Gnss();
+    ~Gnss();
+
+    // registerAsService will call interfaceChain to determine the version of service
+    /* comment this out until we know really how to manipulate hidl version
+    using interfaceChain_cb = std::function<
+        void(const ::android::hardware::hidl_vec<::android::hardware::hidl_string>& descriptors)>;
+    virtual ::android::hardware::Return<void> interfaceChain(interfaceChain_cb _hidl_cb) override {
+        _hidl_cb({
+                "android.hardware.gnss@1.1::IGnss",
+                ::android::hidl::base::V1_0::IBase::descriptor,
+                });
+        return ::android::hardware::Void();
+    }
+    */
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnss follow.
+     * These declarations were generated from Gnss.hal.
+     */
+    Return<bool> setCallback(const sp<IGnssCallback>& callback)  override;
+    Return<bool> start()  override;
+    Return<bool> stop()  override;
+    Return<void> cleanup()  override;
+    Return<bool> injectLocation(double latitudeDegrees,
+                                double longitudeDegrees,
+                                float accuracyMeters)  override;
+    Return<bool> injectTime(int64_t timeMs,
+                            int64_t timeReferenceMs,
+                            int32_t uncertaintyMs) override;
+    Return<void> deleteAidingData(IGnss::GnssAidingData aidingDataFlags)  override;
+    Return<bool> setPositionMode(IGnss::GnssPositionMode mode,
+                                 IGnss::GnssPositionRecurrence recurrence,
+                                 uint32_t minIntervalMs,
+                                 uint32_t preferredAccuracyMeters,
+                                 uint32_t preferredTimeMs)  override;
+    Return<sp<IAGnss>> getExtensionAGnss() override;
+    Return<sp<IGnssNi>> getExtensionGnssNi() override;
+    Return<sp<IGnssMeasurement>> getExtensionGnssMeasurement() override;
+    Return<sp<IGnssConfiguration>> getExtensionGnssConfiguration() override;
+    Return<sp<IGnssGeofencing>> getExtensionGnssGeofencing() override;
+    Return<sp<IGnssBatching>> getExtensionGnssBatching() override;
+
+    Return<sp<IAGnssRil>> getExtensionAGnssRil() override;
+
+    inline Return<sp<IGnssNavigationMessage>> getExtensionGnssNavigationMessage() override {
+        return nullptr;
+    }
+
+    inline Return<sp<IGnssXtra>> getExtensionXtra() override {
+        return nullptr;
+    }
+
+    Return<sp<IGnssDebug>> getExtensionGnssDebug() override;
+
+    // These methods are not part of the IGnss base class.
+    GnssAPIClient* getApi();
+    Return<bool> setGnssNiCb(const sp<IGnssNiCallback>& niCb);
+    Return<bool> updateConfiguration(GnssConfig& gnssConfig);
+    GnssInterface* getGnssInterface();
+
+ private:
+    struct GnssDeathRecipient : hidl_death_recipient {
+        GnssDeathRecipient(sp<Gnss> gnss) : mGnss(gnss) {
+        }
+        ~GnssDeathRecipient() = default;
+        virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+        sp<Gnss> mGnss;
+    };
+
+ private:
+    sp<GnssDeathRecipient> mGnssDeathRecipient = nullptr;
+
+    sp<AGnss> mAGnssIface = nullptr;
+    sp<GnssNi> mGnssNi = nullptr;
+    sp<GnssMeasurement> mGnssMeasurement = nullptr;
+    sp<GnssConfiguration> mGnssConfig = nullptr;
+    sp<GnssGeofencing> mGnssGeofencingIface = nullptr;
+    sp<GnssBatching> mGnssBatching = nullptr;
+    sp<IGnssDebug> mGnssDebug = nullptr;
+    sp<AGnssRil> mGnssRil = nullptr;
+
+    GnssAPIClient* mApi = nullptr;
+    sp<IGnssCallback> mGnssCbIface = nullptr;
+    sp<IGnssNiCallback> mGnssNiCbIface = nullptr;
+    GnssConfig mPendingConfig;
+    GnssInterface* mGnssInterface = nullptr;
+};
+
+extern "C" IGnss* HIDL_FETCH_IGnss(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSS_H
diff --git a/sdm845/android/GnssBatching.cpp b/sdm845/android/GnssBatching.cpp
new file mode 100644
index 0000000..a78989c
--- /dev/null
+++ b/sdm845/android/GnssBatching.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssBatchingInterface"
+
+#include <log_util.h>
+#include <BatchingAPIClient.h>
+#include "GnssBatching.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void GnssBatching::GnssBatchingDeathRecipient::serviceDied(
+        uint64_t cookie, const wp<IBase>& who) {
+    LOC_LOGE("%s] service died. cookie: %llu, who: %p",
+            __FUNCTION__, static_cast<unsigned long long>(cookie), &who);
+    if (mGnssBatching != nullptr) {
+        mGnssBatching->stop();
+        mGnssBatching->cleanup();
+    }
+}
+
+GnssBatching::GnssBatching() : mApi(nullptr) {
+    mGnssBatchingDeathRecipient = new GnssBatchingDeathRecipient(this);
+}
+
+GnssBatching::~GnssBatching() {
+    if (mApi != nullptr) {
+        delete mApi;
+        mApi = nullptr;
+    }
+}
+
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssBatching follow.
+Return<bool> GnssBatching::init(const sp<IGnssBatchingCallback>& callback) {
+    if (mApi != nullptr) {
+        LOC_LOGE("%s]: mApi is NOT nullptr", __FUNCTION__);
+        return false;
+    }
+
+    mApi = new BatchingAPIClient(callback);
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: failed to create mApi", __FUNCTION__);
+        return false;
+    }
+
+    if (mGnssBatchingCbIface != nullptr) {
+        mGnssBatchingCbIface->unlinkToDeath(mGnssBatchingDeathRecipient);
+    }
+    mGnssBatchingCbIface = callback;
+    if (mGnssBatchingCbIface != nullptr) {
+        mGnssBatchingCbIface->linkToDeath(mGnssBatchingDeathRecipient, 0 /*cookie*/);
+    }
+
+    return true;
+}
+
+Return<uint16_t> GnssBatching::getBatchSize() {
+    uint16_t ret = 0;
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        ret = mApi->getBatchSize();
+    }
+    return ret;
+}
+
+Return<bool> GnssBatching::start(const IGnssBatching::Options& options) {
+    bool ret = false;
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        ret = mApi->startSession(options);
+    }
+    return ret;
+}
+
+Return<void> GnssBatching::flush() {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        mApi->flushBatchedLocations();
+    }
+    return Void();
+}
+
+Return<bool> GnssBatching::stop() {
+    bool ret = false;
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        ret = mApi->stopSession();
+    }
+    return ret;
+}
+
+Return<void> GnssBatching::cleanup() {
+    if (mGnssBatchingCbIface != nullptr) {
+        mGnssBatchingCbIface->unlinkToDeath(mGnssBatchingDeathRecipient);
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssBatching.h b/sdm845/android/GnssBatching.h
new file mode 100644
index 0000000..de5d5c3
--- /dev/null
+++ b/sdm845/android/GnssBatching.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSBATCHING_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSBATCHING_H
+
+#include <android/hardware/gnss/1.0/IGnssBatching.h>
+#include <hidl/Status.h>
+
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssBatching;
+using ::android::hardware::gnss::V1_0::IGnssBatchingCallback;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+class BatchingAPIClient;
+struct GnssBatching : public IGnssBatching {
+    GnssBatching();
+    ~GnssBatching();
+
+    // Methods from ::android::hardware::gnss::V1_0::IGnssBatching follow.
+    Return<bool> init(const sp<IGnssBatchingCallback>& callback) override;
+    Return<uint16_t> getBatchSize() override;
+    Return<bool> start(const IGnssBatching::Options& options ) override;
+    Return<void> flush() override;
+    Return<bool> stop() override;
+    Return<void> cleanup() override;
+
+ private:
+    struct GnssBatchingDeathRecipient : hidl_death_recipient {
+        GnssBatchingDeathRecipient(sp<GnssBatching> gnssBatching) :
+            mGnssBatching(gnssBatching) {
+        }
+        ~GnssBatchingDeathRecipient() = default;
+        virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+        sp<GnssBatching> mGnssBatching;
+    };
+
+ private:
+    sp<GnssBatchingDeathRecipient> mGnssBatchingDeathRecipient = nullptr;
+    sp<IGnssBatchingCallback> mGnssBatchingCbIface = nullptr;
+    BatchingAPIClient* mApi = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSBATCHING_H
diff --git a/sdm845/android/GnssConfiguration.cpp b/sdm845/android/GnssConfiguration.cpp
new file mode 100644
index 0000000..a35be73
--- /dev/null
+++ b/sdm845/android/GnssConfiguration.cpp
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssConfigurationInterface"
+
+#include <log_util.h>
+#include "Gnss.h"
+#include "GnssConfiguration.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+GnssConfiguration::GnssConfiguration(Gnss* gnss) : mGnss(gnss) {
+}
+
+// Methods from ::android::hardware::gps::V1_0::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setSuplEs(bool enabled)  {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT;
+    config.suplEmergencyServices = (enabled ?
+            GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_YES :
+            GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_NO);
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setSuplVersion(uint32_t version)  {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT;
+    switch (version) {
+        case 0x00020002:
+            config.suplVersion = GNSS_CONFIG_SUPL_VERSION_2_0_2;
+            break;
+        case 0x00020000:
+            config.suplVersion = GNSS_CONFIG_SUPL_VERSION_2_0_0;
+            break;
+        case 0x00010000:
+            config.suplVersion = GNSS_CONFIG_SUPL_VERSION_1_0_0;
+            break;
+        default:
+            LOC_LOGE("%s]: invalid version: 0x%x.", __FUNCTION__, version);
+            return false;
+            break;
+    }
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setSuplMode(uint8_t mode)  {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_SUPL_MODE_BIT;
+    switch (mode) {
+        case 1:
+            config.suplModeMask = GNSS_CONFIG_SUPL_MODE_MSB;
+            break;
+        case 2:
+            config.suplModeMask = GNSS_CONFIG_SUPL_MODE_MSA;
+            break;
+        default:
+            LOC_LOGE("%s]: invalid mode: %d.", __FUNCTION__, mode);
+            return false;
+            break;
+    }
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setLppProfile(uint8_t lppProfile) {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT;
+    switch (lppProfile) {
+        case 0:
+            config.lppProfile = GNSS_CONFIG_LPP_PROFILE_RRLP_ON_LTE;
+            break;
+        case 1:
+            config.lppProfile = GNSS_CONFIG_LPP_PROFILE_USER_PLANE;
+            break;
+        case 2:
+            config.lppProfile = GNSS_CONFIG_LPP_PROFILE_CONTROL_PLANE;
+            break;
+        case 3:
+            config.lppProfile = GNSS_CONFIG_LPP_PROFILE_USER_PLANE_AND_CONTROL_PLANE;
+            break;
+        default:
+            LOC_LOGE("%s]: invalid lppProfile: %d.", __FUNCTION__, lppProfile);
+            return false;
+            break;
+    }
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setGlonassPositioningProtocol(uint8_t protocol) {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+
+    config.flags = GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT;
+    if (protocol & (1<<0)) {
+        config.aGlonassPositionProtocolMask |= GNSS_CONFIG_RRC_CONTROL_PLANE_BIT;
+    }
+    if (protocol & (1<<1)) {
+        config.aGlonassPositionProtocolMask |= GNSS_CONFIG_RRLP_USER_PLANE_BIT;
+    }
+    if (protocol & (1<<2)) {
+        config.aGlonassPositionProtocolMask |= GNSS_CONFIG_LLP_USER_PLANE_BIT;
+    }
+    if (protocol & (1<<3)) {
+        config.aGlonassPositionProtocolMask |= GNSS_CONFIG_LLP_CONTROL_PLANE_BIT;
+    }
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setGpsLock(uint8_t lock) {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT;
+    switch (lock) {
+        case 0:
+            config.gpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
+            break;
+        case 1:
+            config.gpsLock = GNSS_CONFIG_GPS_LOCK_MO;
+            break;
+        case 2:
+            config.gpsLock = GNSS_CONFIG_GPS_LOCK_NI;
+            break;
+        case 3:
+            config.gpsLock = GNSS_CONFIG_GPS_LOCK_MO_AND_NI;
+            break;
+        default:
+            LOC_LOGE("%s]: invalid lock: %d.", __FUNCTION__, lock);
+            return false;
+            break;
+    }
+    config.gpsLock = static_cast<GnssConfigGpsLock>(lock);
+
+    return mGnss->updateConfiguration(config);
+}
+
+Return<bool> GnssConfiguration::setEmergencySuplPdn(bool enabled) {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT;
+    config.emergencyPdnForEmergencySupl = (enabled ?
+            GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_YES :
+            GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_NO);
+
+    return mGnss->updateConfiguration(config);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssConfiguration.h b/sdm845/android/GnssConfiguration.h
new file mode 100644
index 0000000..f9ea423
--- /dev/null
+++ b/sdm845/android/GnssConfiguration.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+
+ /* Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSCONFIGURATION_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSCONFIGURATION_H
+
+#include <android/hardware/gnss/1.0/IGnssConfiguration.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssConfiguration;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Interface for passing GNSS configuration info from platform to HAL.
+ */
+struct Gnss;
+struct GnssConfiguration : public IGnssConfiguration {
+    GnssConfiguration(Gnss* gnss);
+    ~GnssConfiguration() = default;
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssConfiguration follow.
+     * These declarations were generated from IGnssConfiguration.hal.
+     */
+    Return<bool> setSuplVersion(uint32_t version) override;
+    Return<bool> setSuplMode(uint8_t mode) override;
+    Return<bool> setSuplEs(bool enabled) override;
+    Return<bool> setLppProfile(uint8_t lppProfile) override;
+    Return<bool> setGlonassPositioningProtocol(uint8_t protocol) override;
+    Return<bool> setEmergencySuplPdn(bool enable) override;
+    Return<bool> setGpsLock(uint8_t lock) override;
+
+ private:
+    Gnss* mGnss = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSCONFIGURATION_H
diff --git a/sdm845/android/GnssDebug.cpp b/sdm845/android/GnssDebug.cpp
new file mode 100644
index 0000000..e6f59df
--- /dev/null
+++ b/sdm845/android/GnssDebug.cpp
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssDebugInterface"
+
+#include <log/log.h>
+#include <log_util.h>
+#include "Gnss.h"
+#include "GnssDebug.h"
+#include "LocationUtil.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::hidl_vec;
+
+#define GNSS_DEBUG_UNKNOWN_UTC_TIME     (1483228800ULL) // 1/1/2017 00:00 GMT
+#define GNSS_DEBUG_UNKNOWN_UTC_TIME_UNC (1.57783680E17) // 5 years in ns
+
+GnssDebug::GnssDebug(Gnss* gnss) : mGnss(gnss)
+{
+}
+
+/*
+ * This methods requests position, time and satellite ephemeris debug information
+ * from the HAL.
+ *
+ * @return void
+*/
+Return<void> GnssDebug::getDebugData(getDebugData_cb _hidl_cb)
+{
+    LOC_LOGI("GnssDebug - 0426a");
+
+    DebugData data = { };
+
+    if((nullptr == mGnss) || (nullptr == mGnss->getGnssInterface())){
+        LOC_LOGE("GnssDebug - Null GNSS interface");
+        _hidl_cb(data);
+        return Void();
+    }
+
+    // get debug report snapshot via hal interface
+    GnssDebugReport reports = { };
+    mGnss->getGnssInterface()->getDebugReport(reports);
+
+    // location block
+    if (reports.mLocation.mValid) {
+        data.position.valid = true;
+        data.position.latitudeDegrees = reports.mLocation.mLocation.latitude;
+        data.position.longitudeDegrees = reports.mLocation.mLocation.longitude;
+        data.position.altitudeMeters = reports.mLocation.mLocation.altitude;
+
+        data.position.speedMetersPerSec =
+            (double)(reports.mLocation.mLocation.speed);
+        data.position.bearingDegrees =
+            (double)(reports.mLocation.mLocation.bearing);
+        data.position.horizontalAccuracyMeters =
+            (double)(reports.mLocation.mLocation.accuracy);
+        data.position.verticalAccuracyMeters =
+            reports.mLocation.verticalAccuracyMeters;
+        data.position.speedAccuracyMetersPerSecond =
+            reports.mLocation.speedAccuracyMetersPerSecond;
+        data.position.bearingAccuracyDegrees =
+            reports.mLocation.bearingAccuracyDegrees;
+        LOC_LOGI("GnssDebug - lat=%f lon=%f",
+                 data.position.latitudeDegrees, data.position.longitudeDegrees);
+
+        timeval tv_now, tv_report;
+        tv_report.tv_sec  = reports.mLocation.mLocation.timestamp / 1000ULL;
+        tv_report.tv_usec =
+            (reports.mLocation.mLocation.timestamp % 1000ULL) * 1000ULL;
+        gettimeofday(&tv_now, NULL);
+        data.position.ageSeconds =
+            (tv_now.tv_sec - tv_report.tv_sec) +
+            (float)((tv_now.tv_usec - tv_report.tv_usec)) / 1000000;
+
+        LOC_LOGI("GnssDebug - time now=%lld:%lld", tv_now.tv_sec, tv_now.tv_usec);
+        LOC_LOGI("GnssDebug - time rep=%lld:%lld",tv_report.tv_sec, tv_report.tv_usec);
+        LOC_LOGI("GnssDebug - age=%f", data.position.ageSeconds);
+    }
+    else {
+        data.position.valid = false;
+    }
+
+    // time block
+    if (reports.mTime.mValid) {
+        data.time.timeEstimate = reports.mTime.timeEstimate;
+        data.time.timeUncertaintyNs = reports.mTime.timeUncertaintyNs;
+        data.time.frequencyUncertaintyNsPerSec =
+            reports.mTime.frequencyUncertaintyNsPerSec;
+    }
+    else {
+        data.time.timeEstimate = GNSS_DEBUG_UNKNOWN_UTC_TIME;
+        data.time.timeUncertaintyNs = (float)(GNSS_DEBUG_UNKNOWN_UTC_TIME_UNC);
+        data.time.frequencyUncertaintyNsPerSec = 0;
+    }
+    LOC_LOGI("GnssDebug - timeestimate=%lld", data.time.timeEstimate);
+
+    // satellite data block
+    SatelliteData s = { };
+    std::vector<SatelliteData> s_array = { };
+
+    for (uint32_t i=0; i<reports.mSatelliteInfo.size(); i++) {
+        memset(&s, 0, sizeof(s));
+        s.svid = reports.mSatelliteInfo[i].svid;
+        convertGnssConstellationType(
+            reports.mSatelliteInfo[i].constellation, s.constellation);
+        convertGnssEphemerisType(
+            reports.mSatelliteInfo[i].mEphemerisType, s.ephemerisType);
+        convertGnssEphemerisSource(
+            reports.mSatelliteInfo[i].mEphemerisSource, s.ephemerisSource);
+        convertGnssEphemerisHealth(
+            reports.mSatelliteInfo[i].mEphemerisHealth, s.ephemerisHealth);
+
+        s.ephemerisAgeSeconds =
+            reports.mSatelliteInfo[i].ephemerisAgeSeconds;
+        s.serverPredictionIsAvailable =
+            reports.mSatelliteInfo[i].serverPredictionIsAvailable;
+        s.serverPredictionAgeSeconds =
+            reports.mSatelliteInfo[i].serverPredictionAgeSeconds;
+
+        s_array.push_back(s);
+    }
+    data.satelliteDataArray = s_array;
+    LOC_LOGI("GnssDebug - satellite=%d", data.satelliteDataArray.size());
+
+    // callback HIDL with collected debug data
+    _hidl_cb(data);
+
+    LOC_LOGI("GnssDebug - done");
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssDebug.h b/sdm845/android/GnssDebug.h
new file mode 100644
index 0000000..7d29131
--- /dev/null
+++ b/sdm845/android/GnssDebug.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSDEBUG_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSDEBUG_H
+
+
+#include <android/hardware/gnss/1.0/IGnssDebug.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssDebug;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/* Interface for GNSS Debug support. */
+struct Gnss;
+struct GnssDebug : public IGnssDebug {
+    GnssDebug(Gnss* gnss);
+    ~GnssDebug() {};
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssDebug follow.
+     * These declarations were generated from IGnssDebug.hal.
+     */
+    Return<void> getDebugData(getDebugData_cb _hidl_cb) override;
+
+private:
+    Gnss* mGnss = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSDEBUG_H
diff --git a/sdm845/android/GnssGeofencing.cpp b/sdm845/android/GnssGeofencing.cpp
new file mode 100644
index 0000000..035a092
--- /dev/null
+++ b/sdm845/android/GnssGeofencing.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHal_GnssGeofencing"
+
+#include <log_util.h>
+#include <GeofenceAPIClient.h>
+#include "GnssGeofencing.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void GnssGeofencing::GnssGeofencingDeathRecipient::serviceDied(
+        uint64_t cookie, const wp<IBase>& who) {
+    LOC_LOGE("%s] service died. cookie: %llu, who: %p",
+            __FUNCTION__, static_cast<unsigned long long>(cookie), &who);
+    if (mGnssGeofencing != nullptr) {
+        mGnssGeofencing->removeAllGeofences();
+    }
+}
+
+GnssGeofencing::GnssGeofencing() : mApi(nullptr) {
+    mGnssGeofencingDeathRecipient = new GnssGeofencingDeathRecipient(this);
+}
+
+GnssGeofencing::~GnssGeofencing() {
+    if (mApi != nullptr) {
+        delete mApi;
+        mApi = nullptr;
+    }
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssGeofencing follow.
+Return<void> GnssGeofencing::setCallback(const sp<IGnssGeofenceCallback>& callback)  {
+    if (mApi != nullptr) {
+        LOC_LOGE("%s]: mApi is NOT nullptr", __FUNCTION__);
+        return Void();
+    }
+
+    mApi = new GeofenceAPIClient(callback);
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: failed to create mApi", __FUNCTION__);
+    }
+
+    if (mGnssGeofencingCbIface != nullptr) {
+        mGnssGeofencingCbIface->unlinkToDeath(mGnssGeofencingDeathRecipient);
+    }
+    mGnssGeofencingCbIface = callback;
+    if (mGnssGeofencingCbIface != nullptr) {
+        mGnssGeofencingCbIface->linkToDeath(mGnssGeofencingDeathRecipient, 0 /*cookie*/);
+    }
+
+    return Void();
+}
+
+Return<void> GnssGeofencing::addGeofence(
+        int32_t geofenceId,
+        double latitudeDegrees,
+        double longitudeDegrees,
+        double radiusMeters,
+        IGnssGeofenceCallback::GeofenceTransition lastTransition,
+        int32_t monitorTransitions,
+        uint32_t notificationResponsivenessMs,
+        uint32_t unknownTimerMs)  {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        mApi->geofenceAdd(
+                geofenceId,
+                latitudeDegrees,
+                longitudeDegrees,
+                radiusMeters,
+                static_cast<int32_t>(lastTransition),
+                monitorTransitions,
+                notificationResponsivenessMs,
+                unknownTimerMs);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::pauseGeofence(int32_t geofenceId)  {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        mApi->geofencePause(geofenceId);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::resumeGeofence(int32_t geofenceId, int32_t monitorTransitions)  {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        mApi->geofenceResume(geofenceId, monitorTransitions);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::removeGeofence(int32_t geofenceId)  {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+    } else {
+        mApi->geofenceRemove(geofenceId);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::removeAllGeofences()  {
+    if (mApi == nullptr) {
+        LOC_LOGD("%s]: mApi is nullptr, do nothing", __FUNCTION__);
+    } else {
+        mApi->geofenceRemoveAll();
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssGeofencing.h b/sdm845/android/GnssGeofencing.h
new file mode 100644
index 0000000..7af5f91
--- /dev/null
+++ b/sdm845/android/GnssGeofencing.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSGEOFENCING_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSGEOFENCING_H
+
+#include <android/hardware/gnss/1.0/IGnssGeofencing.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssGeofenceCallback;
+using ::android::hardware::gnss::V1_0::IGnssGeofencing;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+class GeofenceAPIClient;
+struct GnssGeofencing : public IGnssGeofencing {
+    GnssGeofencing();
+    ~GnssGeofencing();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssGeofencing follow.
+     * These declarations were generated from IGnssGeofencing.hal.
+     */
+    Return<void> setCallback(const sp<IGnssGeofenceCallback>& callback)  override;
+    Return<void> addGeofence(int32_t geofenceId,
+                             double latitudeDegrees,
+                             double longitudeDegrees,
+                             double radiusMeters,
+                             IGnssGeofenceCallback::GeofenceTransition lastTransition,
+                             int32_t monitorTransitions,
+                             uint32_t notificationResponsivenessMs,
+                             uint32_t unknownTimerMs)  override;
+
+    Return<void> pauseGeofence(int32_t geofenceId)  override;
+    Return<void> resumeGeofence(int32_t geofenceId, int32_t monitorTransitions)  override;
+    Return<void> removeGeofence(int32_t geofenceId)  override;
+
+ private:
+    // This method is not part of the IGnss base class.
+    // It is called by GnssGeofencingDeathRecipient to remove all geofences added so far.
+    Return<void> removeAllGeofences();
+
+ private:
+    struct GnssGeofencingDeathRecipient : hidl_death_recipient {
+        GnssGeofencingDeathRecipient(sp<GnssGeofencing> gnssGeofencing) :
+            mGnssGeofencing(gnssGeofencing) {
+        }
+        ~GnssGeofencingDeathRecipient() = default;
+        virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+        sp<GnssGeofencing> mGnssGeofencing;
+    };
+
+ private:
+    sp<GnssGeofencingDeathRecipient> mGnssGeofencingDeathRecipient = nullptr;
+    sp<IGnssGeofenceCallback> mGnssGeofencingCbIface = nullptr;
+    GeofenceAPIClient* mApi = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSGEOFENCING_H
diff --git a/sdm845/android/GnssMeasurement.cpp b/sdm845/android/GnssMeasurement.cpp
new file mode 100644
index 0000000..8cbfabd
--- /dev/null
+++ b/sdm845/android/GnssMeasurement.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssMeasurementInterface"
+
+#include <log_util.h>
+#include <MeasurementAPIClient.h>
+#include "GnssMeasurement.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void GnssMeasurement::GnssMeasurementDeathRecipient::serviceDied(
+        uint64_t cookie, const wp<IBase>& who) {
+    LOC_LOGE("%s] service died. cookie: %llu, who: %p",
+            __FUNCTION__, static_cast<unsigned long long>(cookie), &who);
+    if (mGnssMeasurement != nullptr) {
+        mGnssMeasurement->close();
+    }
+}
+
+GnssMeasurement::GnssMeasurement() {
+    mGnssMeasurementDeathRecipient = new GnssMeasurementDeathRecipient(this);
+    mApi = new MeasurementAPIClient();
+}
+
+GnssMeasurement::~GnssMeasurement() {
+    if (mApi) {
+        delete mApi;
+        mApi = nullptr;
+    }
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
+Return<IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback(
+        const sp<IGnssMeasurementCallback>& callback)  {
+
+    Return<IGnssMeasurement::GnssMeasurementStatus> ret =
+        IGnssMeasurement::GnssMeasurementStatus::ERROR_GENERIC;
+    if (mGnssMeasurementCbIface != nullptr) {
+        LOC_LOGE("%s]: GnssMeasurementCallback is already set", __FUNCTION__);
+        return IGnssMeasurement::GnssMeasurementStatus::ERROR_ALREADY_INIT;
+    }
+
+    if (callback == nullptr) {
+        LOC_LOGE("%s]: callback is nullptr", __FUNCTION__);
+        return ret;
+    }
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+        return ret;
+    }
+
+    mGnssMeasurementCbIface = callback;
+    mGnssMeasurementCbIface->linkToDeath(mGnssMeasurementDeathRecipient, 0 /*cookie*/);
+
+    return mApi->measurementSetCallback(callback);
+}
+
+Return<void> GnssMeasurement::close()  {
+    if (mApi == nullptr) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+        return Void();
+    }
+
+    if (mGnssMeasurementCbIface != nullptr) {
+        mGnssMeasurementCbIface->unlinkToDeath(mGnssMeasurementDeathRecipient);
+        mGnssMeasurementCbIface = nullptr;
+    }
+    mApi->measurementClose();
+
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssMeasurement.h b/sdm845/android/GnssMeasurement.h
new file mode 100644
index 0000000..5073169
--- /dev/null
+++ b/sdm845/android/GnssMeasurement.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSMEASUREMENT_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSMEASUREMENT_H
+
+#include <android/hardware/gnss/1.0/IGnssMeasurement.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssMeasurement;
+using ::android::hardware::gnss::V1_0::IGnssMeasurementCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+class MeasurementAPIClient;
+struct GnssMeasurement : public IGnssMeasurement {
+    GnssMeasurement();
+    ~GnssMeasurement();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
+     * These declarations were generated from IGnssMeasurement.hal.
+     */
+    Return<GnssMeasurementStatus> setCallback(
+        const sp<IGnssMeasurementCallback>& callback) override;
+    Return<void> close() override;
+
+ private:
+    struct GnssMeasurementDeathRecipient : hidl_death_recipient {
+        GnssMeasurementDeathRecipient(sp<GnssMeasurement> gnssMeasurement) :
+            mGnssMeasurement(gnssMeasurement) {
+        }
+        ~GnssMeasurementDeathRecipient() = default;
+        virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+        sp<GnssMeasurement> mGnssMeasurement;
+    };
+
+ private:
+    sp<GnssMeasurementDeathRecipient> mGnssMeasurementDeathRecipient = nullptr;
+    sp<IGnssMeasurementCallback> mGnssMeasurementCbIface = nullptr;
+    MeasurementAPIClient* mApi;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSMEASUREMENT_H
diff --git a/sdm845/android/GnssNi.cpp b/sdm845/android/GnssNi.cpp
new file mode 100644
index 0000000..4437932
--- /dev/null
+++ b/sdm845/android/GnssNi.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "LocSvc_GnssNiInterface"
+
+#include <log_util.h>
+#include "Gnss.h"
+#include "GnssNi.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void GnssNi::GnssNiDeathRecipient::serviceDied(uint64_t cookie, const wp<IBase>& who) {
+    LOC_LOGE("%s] service died. cookie: %llu, who: %p",
+            __FUNCTION__, static_cast<unsigned long long>(cookie), &who);
+    // we do nothing here
+    // Gnss::GnssDeathRecipient will stop the session
+}
+
+GnssNi::GnssNi(Gnss* gnss) : mGnss(gnss) {
+    mGnssNiDeathRecipient = new GnssNiDeathRecipient(this);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
+Return<void> GnssNi::setCallback(const sp<IGnssNiCallback>& callback)  {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return Void();
+    }
+
+    mGnss->setGnssNiCb(callback);
+
+    if (mGnssNiCbIface != nullptr) {
+        mGnssNiCbIface->unlinkToDeath(mGnssNiDeathRecipient);
+    }
+    mGnssNiCbIface = callback;
+    if (mGnssNiCbIface != nullptr) {
+        mGnssNiCbIface->linkToDeath(mGnssNiDeathRecipient, 0 /*cookie*/);
+    }
+
+    return Void();
+}
+
+Return<void> GnssNi::respond(int32_t notifId, IGnssNiCallback::GnssUserResponseType userResponse)  {
+    if (mGnss == nullptr) {
+        LOC_LOGE("%s]: mGnss is nullptr", __FUNCTION__);
+        return Void();
+    }
+
+    GnssAPIClient* api = mGnss->getApi();
+    if (api == nullptr) {
+        LOC_LOGE("%s]: api is nullptr", __FUNCTION__);
+        return Void();
+    }
+
+    api->gnssNiRespond(notifId, userResponse);
+
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/GnssNi.h b/sdm845/android/GnssNi.h
new file mode 100644
index 0000000..f6fe0bb
--- /dev/null
+++ b/sdm845/android/GnssNi.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V1_1_GNSSNI_H
+#define ANDROID_HARDWARE_GNSS_V1_1_GNSSNI_H
+
+#include <android/hardware/gnss/1.0/IGnssNi.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssNi;
+using ::android::hardware::gnss::V1_0::IGnssNiCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Gnss;
+struct GnssNi : public IGnssNi {
+    GnssNi(Gnss* gnss);
+    ~GnssNi() = default;
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
+     * These declarations were generated from IGnssNi.hal.
+     */
+    Return<void> setCallback(const sp<IGnssNiCallback>& callback) override;
+    Return<void> respond(int32_t notifId,
+                         IGnssNiCallback::GnssUserResponseType userResponse) override;
+
+ private:
+    struct GnssNiDeathRecipient : hidl_death_recipient {
+        GnssNiDeathRecipient(sp<GnssNi> gnssNi) : mGnssNi(gnssNi) {
+        }
+        ~GnssNiDeathRecipient() = default;
+        virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override;
+        sp<GnssNi> mGnssNi;
+    };
+
+ private:
+    sp<GnssNiDeathRecipient> mGnssNiDeathRecipient = nullptr;
+    sp<IGnssNiCallback> mGnssNiCbIface = nullptr;
+    Gnss* mGnss = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_1_GNSSNI_H
diff --git a/sdm845/android/android.hardware.gnss@1.0-service-qti.rc b/sdm845/android/android.hardware.gnss@1.0-service-qti.rc
new file mode 100644
index 0000000..d4d40fa
--- /dev/null
+++ b/sdm845/android/android.hardware.gnss@1.0-service-qti.rc
@@ -0,0 +1,4 @@
+service gnss_service /vendor/bin/hw/android.hardware.gnss@1.0-service-qti
+    class main
+    user gps
+    group system gps radio
diff --git a/sdm845/android/location_api/BatchingAPIClient.cpp b/sdm845/android/location_api/BatchingAPIClient.cpp
new file mode 100644
index 0000000..21fe2c6
--- /dev/null
+++ b/sdm845/android/location_api/BatchingAPIClient.cpp
@@ -0,0 +1,182 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_BatchingAPIClient"
+
+#include <log_util.h>
+#include <loc_cfg.h>
+
+#include "LocationUtil.h"
+#include "BatchingAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+static void convertBatchOption(const IGnssBatching::Options& in, LocationOptions& out,
+        LocationCapabilitiesMask mask);
+
+BatchingAPIClient::BatchingAPIClient(const sp<IGnssBatchingCallback>& callback) :
+    LocationAPIClientBase(),
+    mGnssBatchingCbIface(callback),
+    mDefaultId(42),
+    mLocationCapabilitiesMask(0)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    LocationCallbacks locationCallbacks;
+    locationCallbacks.size = sizeof(LocationCallbacks);
+
+    locationCallbacks.trackingCb = nullptr;
+    locationCallbacks.batchingCb = nullptr;
+    if (mGnssBatchingCbIface != nullptr) {
+        locationCallbacks.batchingCb = [this](size_t count, Location* location) {
+            onBatchingCb(count, location);
+        };
+    }
+    locationCallbacks.geofenceBreachCb = nullptr;
+    locationCallbacks.geofenceStatusCb = nullptr;
+    locationCallbacks.gnssLocationInfoCb = nullptr;
+    locationCallbacks.gnssNiCb = nullptr;
+    locationCallbacks.gnssSvCb = nullptr;
+    locationCallbacks.gnssNmeaCb = nullptr;
+    locationCallbacks.gnssMeasurementsCb = nullptr;
+
+    locAPISetCallbacks(locationCallbacks);
+}
+
+BatchingAPIClient::~BatchingAPIClient()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+}
+
+int BatchingAPIClient::getBatchSize()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    return locAPIGetBatchSize();
+}
+
+int BatchingAPIClient::startSession(const IGnssBatching::Options& opts)
+{
+    LOC_LOGD("%s]: (%lld %d)", __FUNCTION__,
+            static_cast<long long>(opts.periodNanos), static_cast<uint8_t>(opts.flags));
+    int retVal = -1;
+    LocationOptions options;
+    convertBatchOption(opts, options, mLocationCapabilitiesMask);
+    uint32_t mode = 0;
+    if (opts.flags == static_cast<uint8_t>(IGnssBatching::Flag::WAKEUP_ON_FIFO_FULL)) {
+        mode = SESSION_MODE_ON_FULL;
+    }
+    if (locAPIStartSession(mDefaultId, mode, options) == LOCATION_ERROR_SUCCESS) {
+        retVal = 1;
+    }
+    return retVal;
+}
+
+int BatchingAPIClient::updateSessionOptions(const IGnssBatching::Options& opts)
+{
+    LOC_LOGD("%s]: (%lld %d)", __FUNCTION__,
+            static_cast<long long>(opts.periodNanos), static_cast<uint8_t>(opts.flags));
+    int retVal = -1;
+    LocationOptions options;
+    convertBatchOption(opts, options, mLocationCapabilitiesMask);
+
+    uint32_t mode = 0;
+    if (opts.flags == static_cast<uint8_t>(IGnssBatching::Flag::WAKEUP_ON_FIFO_FULL)) {
+        mode = SESSION_MODE_ON_FULL;
+    }
+    if (locAPIUpdateSessionOptions(mDefaultId, mode, options) == LOCATION_ERROR_SUCCESS) {
+        retVal = 1;
+    }
+    return retVal;
+}
+
+int BatchingAPIClient::stopSession()
+{
+    LOC_LOGD("%s]: ", __FUNCTION__);
+    int retVal = -1;
+    if (locAPIStopSession(mDefaultId) == LOCATION_ERROR_SUCCESS) {
+        retVal = 1;
+    }
+    return retVal;
+}
+
+void BatchingAPIClient::getBatchedLocation(int last_n_locations)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, last_n_locations);
+    locAPIGetBatchedLocations(last_n_locations);
+}
+
+void BatchingAPIClient::flushBatchedLocations()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    locAPIGetBatchedLocations(SIZE_MAX);
+}
+
+void BatchingAPIClient::onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, capabilitiesMask);
+    mLocationCapabilitiesMask = capabilitiesMask;
+}
+
+void BatchingAPIClient::onBatchingCb(size_t count, Location* location)
+{
+    LOC_LOGD("%s]: (count: %zu)", __FUNCTION__, count);
+    if (mGnssBatchingCbIface != nullptr && count > 0) {
+        hidl_vec<GnssLocation> locationVec;
+        locationVec.resize(count);
+        for (size_t i = 0; i < count; i++) {
+            convertGnssLocation(location[i], locationVec[i]);
+        }
+        mGnssBatchingCbIface->gnssLocationBatchCb(locationVec);
+    }
+}
+
+static void convertBatchOption(const IGnssBatching::Options& in, LocationOptions& out,
+        LocationCapabilitiesMask mask)
+{
+    memset(&out, 0, sizeof(LocationOptions));
+    out.size = sizeof(LocationOptions);
+    out.minInterval = (uint32_t)(in.periodNanos / 1000000L);
+    out.minDistance = 0;
+    out.mode = GNSS_SUPL_MODE_STANDALONE;
+    if (mask & LOCATION_CAPABILITIES_GNSS_MSA_BIT)
+        out.mode = GNSS_SUPL_MODE_MSA;
+    if (mask & LOCATION_CAPABILITIES_GNSS_MSB_BIT)
+        out.mode = GNSS_SUPL_MODE_MSB;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/location_api/BatchingAPIClient.h b/sdm845/android/location_api/BatchingAPIClient.h
new file mode 100644
index 0000000..a34c211
--- /dev/null
+++ b/sdm845/android/location_api/BatchingAPIClient.h
@@ -0,0 +1,75 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef BATCHING_API_CLINET_H
+#define BATCHING_API_CLINET_H
+
+#include <android/hardware/gnss/1.0/IGnssBatching.h>
+#include <android/hardware/gnss/1.0/IGnssBatchingCallback.h>
+#include <pthread.h>
+
+#include <LocationAPIClientBase.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+class BatchingAPIClient : public LocationAPIClientBase
+{
+public:
+    BatchingAPIClient(const sp<IGnssBatchingCallback>& callback);
+    ~BatchingAPIClient();
+    int getBatchSize();
+    int startSession(const IGnssBatching::Options& options);
+    int updateSessionOptions(const IGnssBatching::Options& options);
+    int stopSession();
+    void getBatchedLocation(int last_n_locations);
+    void flushBatchedLocations();
+
+    inline LocationCapabilitiesMask getCapabilities() { return mLocationCapabilitiesMask; }
+
+    // callbacks
+    void onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask) final;
+    void onBatchingCb(size_t count, Location* location) final;
+
+private:
+    sp<IGnssBatchingCallback> mGnssBatchingCbIface;
+    uint32_t mDefaultId;
+    int mBatchSize;
+    LocationCapabilitiesMask mLocationCapabilitiesMask;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // BATCHING_API_CLINET_H
diff --git a/sdm845/android/location_api/GeofenceAPIClient.cpp b/sdm845/android/location_api/GeofenceAPIClient.cpp
new file mode 100644
index 0000000..420cdeb
--- /dev/null
+++ b/sdm845/android/location_api/GeofenceAPIClient.cpp
@@ -0,0 +1,248 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_GeofenceApiClient"
+
+#include <log_util.h>
+#include <loc_cfg.h>
+
+#include "LocationUtil.h"
+#include "GeofenceAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+
+GeofenceAPIClient::GeofenceAPIClient(const sp<IGnssGeofenceCallback>& callback) :
+    LocationAPIClientBase(),
+    mGnssGeofencingCbIface(callback)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    LocationCallbacks locationCallbacks;
+    locationCallbacks.size = sizeof(LocationCallbacks);
+
+    locationCallbacks.trackingCb = nullptr;
+    locationCallbacks.batchingCb = nullptr;
+
+    locationCallbacks.geofenceBreachCb = nullptr;
+    if (mGnssGeofencingCbIface != nullptr) {
+        locationCallbacks.geofenceBreachCb =
+            [this](GeofenceBreachNotification geofenceBreachNotification) {
+                onGeofenceBreachCb(geofenceBreachNotification);
+            };
+
+        locationCallbacks.geofenceStatusCb =
+            [this](GeofenceStatusNotification geofenceStatusNotification) {
+                onGeofenceStatusCb(geofenceStatusNotification);
+            };
+    }
+
+    locationCallbacks.gnssLocationInfoCb = nullptr;
+    locationCallbacks.gnssNiCb = nullptr;
+    locationCallbacks.gnssSvCb = nullptr;
+    locationCallbacks.gnssNmeaCb = nullptr;
+    locationCallbacks.gnssMeasurementsCb = nullptr;
+
+    locAPISetCallbacks(locationCallbacks);
+}
+
+void GeofenceAPIClient::geofenceAdd(uint32_t geofence_id, double latitude, double longitude,
+        double radius_meters, int32_t last_transition, int32_t monitor_transitions,
+        uint32_t notification_responsiveness_ms, uint32_t unknown_timer_ms)
+{
+    LOC_LOGD("%s]: (%d %f %f %f %d %d %d %d)", __FUNCTION__,
+            geofence_id, latitude, longitude, radius_meters,
+            last_transition, monitor_transitions, notification_responsiveness_ms, unknown_timer_ms);
+
+    GeofenceOption options;
+    memset(&options, 0, sizeof(GeofenceOption));
+    options.size = sizeof(GeofenceOption);
+    if (monitor_transitions & IGnssGeofenceCallback::GeofenceTransition::ENTERED)
+        options.breachTypeMask |= GEOFENCE_BREACH_ENTER_BIT;
+    if (monitor_transitions & IGnssGeofenceCallback::GeofenceTransition::EXITED)
+        options.breachTypeMask |=  GEOFENCE_BREACH_EXIT_BIT;
+    options.responsiveness = notification_responsiveness_ms;
+
+    GeofenceInfo data;
+    data.size = sizeof(GeofenceInfo);
+    data.latitude = latitude;
+    data.longitude = longitude;
+    data.radius = radius_meters;
+
+    LocationError err = (LocationError)locAPIAddGeofences(1, &geofence_id, &options, &data);
+    if (LOCATION_ERROR_SUCCESS != err) {
+        onAddGeofencesCb(1, &err, &geofence_id);
+    }
+}
+
+void GeofenceAPIClient::geofencePause(uint32_t geofence_id)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, geofence_id);
+    locAPIPauseGeofences(1, &geofence_id);
+}
+
+void GeofenceAPIClient::geofenceResume(uint32_t geofence_id, int32_t monitor_transitions)
+{
+    LOC_LOGD("%s]: (%d %d)", __FUNCTION__, geofence_id, monitor_transitions);
+    GeofenceBreachTypeMask mask = 0;
+    if (monitor_transitions & IGnssGeofenceCallback::GeofenceTransition::ENTERED)
+        mask |= GEOFENCE_BREACH_ENTER_BIT;
+    if (monitor_transitions & IGnssGeofenceCallback::GeofenceTransition::EXITED)
+        mask |=  GEOFENCE_BREACH_EXIT_BIT;
+    locAPIResumeGeofences(1, &geofence_id, &mask);
+}
+
+void GeofenceAPIClient::geofenceRemove(uint32_t geofence_id)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, geofence_id);
+    locAPIRemoveGeofences(1, &geofence_id);
+}
+
+void GeofenceAPIClient::geofenceRemoveAll()
+{
+    LOC_LOGD("%s]", __FUNCTION__);
+    // TODO locAPIRemoveAllGeofences();
+}
+
+// callbacks
+void GeofenceAPIClient::onGeofenceBreachCb(GeofenceBreachNotification geofenceBreachNotification)
+{
+    LOC_LOGD("%s]: (%zu)", __FUNCTION__, geofenceBreachNotification.count);
+    if (mGnssGeofencingCbIface != nullptr) {
+        for (size_t i = 0; i < geofenceBreachNotification.count; i++) {
+            GnssLocation gnssLocation;
+            convertGnssLocation(geofenceBreachNotification.location, gnssLocation);
+
+            IGnssGeofenceCallback::GeofenceTransition transition;
+            if (geofenceBreachNotification.type == GEOFENCE_BREACH_ENTER)
+                transition = IGnssGeofenceCallback::GeofenceTransition::ENTERED;
+            else if (geofenceBreachNotification.type == GEOFENCE_BREACH_EXIT)
+                transition = IGnssGeofenceCallback::GeofenceTransition::EXITED;
+            else {
+                // continue with other breach if transition is
+                // nether GPS_GEOFENCE_ENTERED nor GPS_GEOFENCE_EXITED
+                continue;
+            }
+
+            mGnssGeofencingCbIface->gnssGeofenceTransitionCb(
+                    geofenceBreachNotification.ids[i], gnssLocation, transition,
+                    static_cast<GnssUtcTime>(geofenceBreachNotification.timestamp));
+        }
+    }
+}
+
+void GeofenceAPIClient::onGeofenceStatusCb(GeofenceStatusNotification geofenceStatusNotification)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, geofenceStatusNotification.available);
+    if (mGnssGeofencingCbIface != nullptr) {
+        IGnssGeofenceCallback::GeofenceAvailability status =
+            IGnssGeofenceCallback::GeofenceAvailability::UNAVAILABLE;
+        if (geofenceStatusNotification.available == GEOFENCE_STATUS_AVAILABILE_YES) {
+            status = IGnssGeofenceCallback::GeofenceAvailability::AVAILABLE;
+        }
+        GnssLocation gnssLocation;
+        memset(&gnssLocation, 0, sizeof(GnssLocation));
+        mGnssGeofencingCbIface->gnssGeofenceStatusCb(status, gnssLocation);
+    }
+}
+
+void GeofenceAPIClient::onAddGeofencesCb(size_t count, LocationError* errors, uint32_t* ids)
+{
+    LOC_LOGD("%s]: (%zu)", __FUNCTION__, count);
+    if (mGnssGeofencingCbIface != nullptr) {
+        for (size_t i = 0; i < count; i++) {
+            IGnssGeofenceCallback::GeofenceStatus status =
+                IGnssGeofenceCallback::GeofenceStatus::ERROR_GENERIC;
+            if (errors[i] == LOCATION_ERROR_SUCCESS)
+                status = IGnssGeofenceCallback::GeofenceStatus::OPERATION_SUCCESS;
+            else if (errors[i] == LOCATION_ERROR_ID_EXISTS)
+                status = IGnssGeofenceCallback::GeofenceStatus::ERROR_ID_EXISTS;
+            mGnssGeofencingCbIface->gnssGeofenceAddCb(ids[i], status);
+        }
+    }
+}
+
+void GeofenceAPIClient::onRemoveGeofencesCb(size_t count, LocationError* errors, uint32_t* ids)
+{
+    LOC_LOGD("%s]: (%zu)", __FUNCTION__, count);
+    if (mGnssGeofencingCbIface != nullptr) {
+        for (size_t i = 0; i < count; i++) {
+            IGnssGeofenceCallback::GeofenceStatus status =
+                IGnssGeofenceCallback::GeofenceStatus::ERROR_GENERIC;
+            if (errors[i] == LOCATION_ERROR_SUCCESS)
+                status = IGnssGeofenceCallback::GeofenceStatus::OPERATION_SUCCESS;
+            else if (errors[i] == LOCATION_ERROR_ID_UNKNOWN)
+                status = IGnssGeofenceCallback::GeofenceStatus::ERROR_ID_UNKNOWN;
+            mGnssGeofencingCbIface->gnssGeofenceRemoveCb(ids[i], status);
+        }
+    }
+}
+
+void GeofenceAPIClient::onPauseGeofencesCb(size_t count, LocationError* errors, uint32_t* ids)
+{
+    LOC_LOGD("%s]: (%zu)", __FUNCTION__, count);
+    if (mGnssGeofencingCbIface != nullptr) {
+        for (size_t i = 0; i < count; i++) {
+            IGnssGeofenceCallback::GeofenceStatus status =
+                IGnssGeofenceCallback::GeofenceStatus::ERROR_GENERIC;
+            if (errors[i] == LOCATION_ERROR_SUCCESS)
+                status = IGnssGeofenceCallback::GeofenceStatus::OPERATION_SUCCESS;
+            else if (errors[i] == LOCATION_ERROR_ID_UNKNOWN)
+                status = IGnssGeofenceCallback::GeofenceStatus::ERROR_ID_UNKNOWN;
+            mGnssGeofencingCbIface->gnssGeofencePauseCb(ids[i], status);
+        }
+    }
+}
+
+void GeofenceAPIClient::onResumeGeofencesCb(size_t count, LocationError* errors, uint32_t* ids)
+{
+    LOC_LOGD("%s]: (%zu)", __FUNCTION__, count);
+    if (mGnssGeofencingCbIface != nullptr) {
+        for (size_t i = 0; i < count; i++) {
+            IGnssGeofenceCallback::GeofenceStatus status =
+                IGnssGeofenceCallback::GeofenceStatus::ERROR_GENERIC;
+            if (errors[i] == LOCATION_ERROR_SUCCESS)
+                status = IGnssGeofenceCallback::GeofenceStatus::OPERATION_SUCCESS;
+            else if (errors[i] == LOCATION_ERROR_ID_UNKNOWN)
+                status = IGnssGeofenceCallback::GeofenceStatus::ERROR_ID_UNKNOWN;
+            mGnssGeofencingCbIface->gnssGeofenceResumeCb(ids[i], status);
+        }
+    }
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/location_api/GeofenceAPIClient.h b/sdm845/android/location_api/GeofenceAPIClient.h
new file mode 100644
index 0000000..f779bcb
--- /dev/null
+++ b/sdm845/android/location_api/GeofenceAPIClient.h
@@ -0,0 +1,76 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GEOFENCE_API_CLINET_H
+#define GEOFENCE_API_CLINET_H
+
+
+#include <android/hardware/gnss/1.0/IGnssGeofenceCallback.h>
+#include <LocationAPIClientBase.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+
+class GeofenceAPIClient : public LocationAPIClientBase
+{
+public:
+    GeofenceAPIClient(const sp<IGnssGeofenceCallback>& callback);
+    virtual ~GeofenceAPIClient() = default;
+
+    void geofenceAdd(uint32_t geofence_id, double latitude, double longitude,
+            double radius_meters, int32_t last_transition, int32_t monitor_transitions,
+            uint32_t notification_responsiveness_ms, uint32_t unknown_timer_ms);
+    void geofencePause(uint32_t geofence_id);
+    void geofenceResume(uint32_t geofence_id, int32_t monitor_transitions);
+    void geofenceRemove(uint32_t geofence_id);
+    void geofenceRemoveAll();
+
+    // callbacks
+    void onGeofenceBreachCb(GeofenceBreachNotification geofenceBreachNotification) final;
+    void onGeofenceStatusCb(GeofenceStatusNotification geofenceStatusNotification) final;
+    void onAddGeofencesCb(size_t count, LocationError* errors, uint32_t* ids) final;
+    void onRemoveGeofencesCb(size_t count, LocationError* errors, uint32_t* ids) final;
+    void onPauseGeofencesCb(size_t count, LocationError* errors, uint32_t* ids) final;
+    void onResumeGeofencesCb(size_t count, LocationError* errors, uint32_t* ids) final;
+
+private:
+    sp<IGnssGeofenceCallback> mGnssGeofencingCbIface;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // GEOFENCE_API_CLINET_H
diff --git a/sdm845/android/location_api/GnssAPIClient.cpp b/sdm845/android/location_api/GnssAPIClient.cpp
new file mode 100644
index 0000000..fb0218f
--- /dev/null
+++ b/sdm845/android/location_api/GnssAPIClient.cpp
@@ -0,0 +1,418 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_GnssAPIClient"
+
+#include <log_util.h>
+#include <loc_cfg.h>
+
+#include "LocationUtil.h"
+#include "GnssAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+static void convertGnssSvStatus(GnssSvNotification& in, IGnssCallback::GnssSvStatus& out);
+
+GnssAPIClient::GnssAPIClient(const sp<IGnssCallback>& gpsCb,
+    const sp<IGnssNiCallback>& niCb) :
+    LocationAPIClientBase(),
+    mGnssCbIface(nullptr),
+    mGnssNiCbIface(nullptr),
+    mLocationCapabilitiesMask(0),
+    mLocationCapabilitiesCached(false)
+{
+    LOC_LOGD("%s]: (%p %p)", __FUNCTION__, &gpsCb, &niCb);
+
+    // set default LocationOptions.
+    memset(&mLocationOptions, 0, sizeof(LocationOptions));
+    mLocationOptions.size = sizeof(LocationOptions);
+    mLocationOptions.minInterval = 1000;
+    mLocationOptions.minDistance = 0;
+    mLocationOptions.mode = GNSS_SUPL_MODE_STANDALONE;
+
+    gnssUpdateCallbacks(gpsCb, niCb);
+}
+
+GnssAPIClient::~GnssAPIClient()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+}
+
+// for GpsInterface
+void GnssAPIClient::gnssUpdateCallbacks(const sp<IGnssCallback>& gpsCb,
+    const sp<IGnssNiCallback>& niCb)
+{
+    LOC_LOGD("%s]: (%p %p)", __FUNCTION__, &gpsCb, &niCb);
+
+    mGnssCbIface = gpsCb;
+    mGnssNiCbIface = niCb;
+
+    LocationCallbacks locationCallbacks;
+    locationCallbacks.size = sizeof(LocationCallbacks);
+
+    locationCallbacks.trackingCb = nullptr;
+    if (mGnssCbIface != nullptr) {
+        locationCallbacks.trackingCb = [this](Location location) {
+            onTrackingCb(location);
+        };
+    }
+
+    locationCallbacks.batchingCb = nullptr;
+    locationCallbacks.geofenceBreachCb = nullptr;
+    locationCallbacks.geofenceStatusCb = nullptr;
+    locationCallbacks.gnssLocationInfoCb = nullptr;
+
+    locationCallbacks.gnssNiCb = nullptr;
+    if (mGnssNiCbIface != nullptr) {
+        locationCallbacks.gnssNiCb = [this](uint32_t id, GnssNiNotification gnssNiNotification) {
+            onGnssNiCb(id, gnssNiNotification);
+        };
+    }
+
+    locationCallbacks.gnssSvCb = nullptr;
+    if (mGnssCbIface != nullptr) {
+        locationCallbacks.gnssSvCb = [this](GnssSvNotification gnssSvNotification) {
+            onGnssSvCb(gnssSvNotification);
+        };
+    }
+
+    locationCallbacks.gnssNmeaCb = nullptr;
+    if (mGnssCbIface != nullptr) {
+        locationCallbacks.gnssNmeaCb = [this](GnssNmeaNotification gnssNmeaNotification) {
+            onGnssNmeaCb(gnssNmeaNotification);
+        };
+    }
+
+    locationCallbacks.gnssMeasurementsCb = nullptr;
+
+    locAPISetCallbacks(locationCallbacks);
+}
+
+bool GnssAPIClient::gnssStart()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    bool retVal = true;
+    locAPIStartTracking(mLocationOptions);
+    return retVal;
+}
+
+bool GnssAPIClient::gnssStop()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    bool retVal = true;
+    locAPIStopTracking();
+    return retVal;
+}
+
+void GnssAPIClient::gnssDeleteAidingData(IGnss::GnssAidingData aidingDataFlags)
+{
+    LOC_LOGD("%s]: (%02hx)", __FUNCTION__, aidingDataFlags);
+    GnssAidingData data;
+    memset(&data, 0, sizeof (GnssAidingData));
+    data.sv.svTypeMask = GNSS_AIDING_DATA_SV_TYPE_GPS |
+        GNSS_AIDING_DATA_SV_TYPE_GLONASS |
+        GNSS_AIDING_DATA_SV_TYPE_QZSS |
+        GNSS_AIDING_DATA_SV_TYPE_BEIDOU |
+        GNSS_AIDING_DATA_SV_TYPE_GALILEO;
+
+    if (aidingDataFlags == IGnss::GnssAidingData::DELETE_ALL)
+        data.deleteAll = true;
+    else {
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_EPHEMERIS)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_EPHEMERIS;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_ALMANAC)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_ALMANAC;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_POSITION)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_POSITION;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_TIME)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_TIME;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_IONO)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_IONOSPHERE;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_UTC)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_UTC;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_HEALTH)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_HEALTH;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SVDIR)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_DIRECTION;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SVSTEER)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_STEER;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SADATA)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_SA_DATA;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_RTI)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_RTI;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_CELLDB_INFO)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_CELLDB;
+    }
+    locAPIGnssDeleteAidingData(data);
+}
+
+bool GnssAPIClient::gnssSetPositionMode(IGnss::GnssPositionMode mode,
+        IGnss::GnssPositionRecurrence recurrence, uint32_t minIntervalMs,
+        uint32_t preferredAccuracyMeters, uint32_t preferredTimeMs)
+{
+    LOC_LOGD("%s]: (%d %d %d %d %d)", __FUNCTION__,
+            (int)mode, recurrence, minIntervalMs, preferredAccuracyMeters, preferredTimeMs);
+    bool retVal = true;
+    memset(&mLocationOptions, 0, sizeof(LocationOptions));
+    mLocationOptions.size = sizeof(LocationOptions);
+    mLocationOptions.minInterval = minIntervalMs;
+    mLocationOptions.minDistance = preferredAccuracyMeters;
+    if (mode == IGnss::GnssPositionMode::STANDALONE)
+        mLocationOptions.mode = GNSS_SUPL_MODE_STANDALONE;
+    else if (mode == IGnss::GnssPositionMode::MS_BASED)
+        mLocationOptions.mode = GNSS_SUPL_MODE_MSB;
+    else if (mode ==  IGnss::GnssPositionMode::MS_ASSISTED)
+        mLocationOptions.mode = GNSS_SUPL_MODE_MSA;
+    return retVal;
+}
+
+// for GpsNiInterface
+void GnssAPIClient::gnssNiRespond(int32_t notifId,
+        IGnssNiCallback::GnssUserResponseType userResponse)
+{
+    LOC_LOGD("%s]: (%d %d)", __FUNCTION__, notifId, static_cast<int>(userResponse));
+    GnssNiResponse data = GNSS_NI_RESPONSE_IGNORE;
+    if (userResponse == IGnssNiCallback::GnssUserResponseType::RESPONSE_ACCEPT)
+        data = GNSS_NI_RESPONSE_ACCEPT;
+    else if (userResponse == IGnssNiCallback::GnssUserResponseType::RESPONSE_DENY)
+        data = GNSS_NI_RESPONSE_DENY;
+    else if (userResponse == IGnssNiCallback::GnssUserResponseType::RESPONSE_NORESP)
+        data = GNSS_NI_RESPONSE_NO_RESPONSE;
+    locAPIGnssNiResponse(notifId, data);
+}
+
+// for GnssConfigurationInterface
+void GnssAPIClient::gnssConfigurationUpdate(const GnssConfig& gnssConfig)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, gnssConfig.flags);
+    locAPIGnssUpdateConfig(gnssConfig);
+}
+
+void GnssAPIClient::requestCapabilities() {
+    // only send capablities if it's already cached, otherwise the first time LocationAPI
+    // is initialized, capabilities will be sent by LocationAPI
+    if (mLocationCapabilitiesCached) {
+        onCapabilitiesCb(mLocationCapabilitiesMask);
+    }
+}
+
+// callbacks
+void GnssAPIClient::onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, capabilitiesMask);
+    mLocationCapabilitiesMask = capabilitiesMask;
+    mLocationCapabilitiesCached = true;
+    if (mGnssCbIface != nullptr) {
+        uint32_t data = 0;
+        if ((capabilitiesMask & LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT) ||
+                (capabilitiesMask & LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT) ||
+                (capabilitiesMask & LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT) ||
+                (capabilitiesMask & LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT))
+            data |= IGnssCallback::Capabilities::SCHEDULING;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_GEOFENCE_BIT)
+            data |= IGnssCallback::Capabilities::GEOFENCING;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT)
+            data |= IGnssCallback::Capabilities::MEASUREMENTS;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_GNSS_MSB_BIT)
+            data |= IGnssCallback::Capabilities::MSB;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_GNSS_MSA_BIT)
+            data |= IGnssCallback::Capabilities::MSA;
+        mGnssCbIface->gnssSetCapabilitesCb(data);
+    }
+    if (mGnssCbIface != nullptr) {
+        IGnssCallback::GnssSystemInfo gnssInfo;
+        gnssInfo.yearOfHw = 2015;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT) {
+            gnssInfo.yearOfHw = 2017;
+        }
+        LOC_LOGV("%s:%d] set_system_info_cb (%d)", __FUNCTION__, __LINE__, gnssInfo.yearOfHw);
+        mGnssCbIface->gnssSetSystemInfoCb(gnssInfo);
+    }
+}
+
+void GnssAPIClient::onTrackingCb(Location location)
+{
+    LOC_LOGD("%s]: (flags: %02x)", __FUNCTION__, location.flags);
+    if (mGnssCbIface != nullptr) {
+        GnssLocation gnssLocation;
+        convertGnssLocation(location, gnssLocation);
+        mGnssCbIface->gnssLocationCb(gnssLocation);
+    }
+}
+
+void GnssAPIClient::onGnssNiCb(uint32_t id, GnssNiNotification gnssNiNotification)
+{
+    LOC_LOGD("%s]: (id: %d)", __FUNCTION__, id);
+
+    if (mGnssNiCbIface == nullptr) {
+        LOC_LOGE("%s]: mGnssNiCbIface is nullptr", __FUNCTION__);
+        return;
+    }
+
+    IGnssNiCallback::GnssNiNotification notificationGnss = {};
+
+    notificationGnss.notificationId = id;
+
+    if (gnssNiNotification.type == GNSS_NI_TYPE_VOICE)
+        notificationGnss.niType = IGnssNiCallback::GnssNiType::VOICE;
+    else if (gnssNiNotification.type == GNSS_NI_TYPE_SUPL)
+        notificationGnss.niType = IGnssNiCallback::GnssNiType::UMTS_SUPL;
+    else if (gnssNiNotification.type == GNSS_NI_TYPE_CONTROL_PLANE)
+        notificationGnss.niType = IGnssNiCallback::GnssNiType::UMTS_CTRL_PLANE;
+    else if (gnssNiNotification.type == GNSS_NI_TYPE_EMERGENCY_SUPL)
+        notificationGnss.niType =
+            static_cast<IGnssNiCallback::GnssNiType>(4/*hardcode until IGnssNiCallback adds value*/);
+
+    if (gnssNiNotification.options == GNSS_NI_OPTIONS_NOTIFICATION)
+        notificationGnss.notifyFlags =
+            static_cast<uint32_t>(IGnssNiCallback::GnssNiNotifyFlags::NEED_NOTIFY);
+    else if (gnssNiNotification.options == GNSS_NI_OPTIONS_VERIFICATION)
+        notificationGnss.notifyFlags =
+            static_cast<uint32_t>(IGnssNiCallback::GnssNiNotifyFlags::NEED_VERIFY);
+    else if (gnssNiNotification.options == GNSS_NI_OPTIONS_PRIVACY_OVERRIDE)
+        notificationGnss.notifyFlags =
+            static_cast<uint32_t>(IGnssNiCallback::GnssNiNotifyFlags::PRIVACY_OVERRIDE);
+
+    notificationGnss.timeoutSec = gnssNiNotification.timeout;
+
+    if (gnssNiNotification.timeoutResponse == GNSS_NI_RESPONSE_ACCEPT)
+        notificationGnss.defaultResponse = IGnssNiCallback::GnssUserResponseType::RESPONSE_ACCEPT;
+    else if (gnssNiNotification.timeoutResponse == GNSS_NI_RESPONSE_DENY)
+        notificationGnss.defaultResponse = IGnssNiCallback::GnssUserResponseType::RESPONSE_DENY;
+    else if (gnssNiNotification.timeoutResponse == GNSS_NI_RESPONSE_NO_RESPONSE ||
+            gnssNiNotification.timeoutResponse == GNSS_NI_RESPONSE_IGNORE)
+        notificationGnss.defaultResponse = IGnssNiCallback::GnssUserResponseType::RESPONSE_NORESP;
+
+    notificationGnss.requestorId = gnssNiNotification.requestor;
+
+    notificationGnss.notificationMessage = gnssNiNotification.message;
+
+    if (gnssNiNotification.requestorEncoding == GNSS_NI_ENCODING_TYPE_NONE)
+        notificationGnss.requestorIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_NONE;
+    else if (gnssNiNotification.requestorEncoding == GNSS_NI_ENCODING_TYPE_GSM_DEFAULT)
+        notificationGnss.requestorIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_GSM_DEFAULT;
+    else if (gnssNiNotification.requestorEncoding == GNSS_NI_ENCODING_TYPE_UTF8)
+        notificationGnss.requestorIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_UTF8;
+    else if (gnssNiNotification.requestorEncoding == GNSS_NI_ENCODING_TYPE_UCS2)
+        notificationGnss.requestorIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_UCS2;
+
+    if (gnssNiNotification.messageEncoding == GNSS_NI_ENCODING_TYPE_NONE)
+        notificationGnss.notificationIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_NONE;
+    else if (gnssNiNotification.messageEncoding == GNSS_NI_ENCODING_TYPE_GSM_DEFAULT)
+        notificationGnss.notificationIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_GSM_DEFAULT;
+    else if (gnssNiNotification.messageEncoding == GNSS_NI_ENCODING_TYPE_UTF8)
+        notificationGnss.notificationIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_UTF8;
+    else if (gnssNiNotification.messageEncoding == GNSS_NI_ENCODING_TYPE_UCS2)
+        notificationGnss.notificationIdEncoding =
+            IGnssNiCallback::GnssNiEncodingType::ENC_SUPL_UCS2;
+
+    mGnssNiCbIface->niNotifyCb(notificationGnss);
+}
+
+void GnssAPIClient::onGnssSvCb(GnssSvNotification gnssSvNotification)
+{
+    LOC_LOGD("%s]: (count: %zu)", __FUNCTION__, gnssSvNotification.count);
+    if (mGnssCbIface != nullptr) {
+        IGnssCallback::GnssSvStatus svStatus;
+        convertGnssSvStatus(gnssSvNotification, svStatus);
+        mGnssCbIface->gnssSvStatusCb(svStatus);
+    }
+}
+
+void GnssAPIClient::onGnssNmeaCb(GnssNmeaNotification gnssNmeaNotification)
+{
+    if (mGnssCbIface != nullptr) {
+        android::hardware::hidl_string nmeaString;
+        nmeaString.setToExternal(gnssNmeaNotification.nmea, gnssNmeaNotification.length);
+        mGnssCbIface->gnssNmeaCb(static_cast<GnssUtcTime>(gnssNmeaNotification.timestamp),
+                nmeaString);
+    }
+}
+
+void GnssAPIClient::onStartTrackingCb(LocationError error)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, error);
+    if (error == LOCATION_ERROR_SUCCESS && mGnssCbIface != nullptr) {
+        mGnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::ENGINE_ON);
+        mGnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::SESSION_BEGIN);
+    }
+}
+
+void GnssAPIClient::onStopTrackingCb(LocationError error)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, error);
+    if (error == LOCATION_ERROR_SUCCESS && mGnssCbIface != nullptr) {
+        mGnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::SESSION_END);
+        mGnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::ENGINE_OFF);
+    }
+}
+
+static void convertGnssSvStatus(GnssSvNotification& in, IGnssCallback::GnssSvStatus& out)
+{
+    memset(&out, 0, sizeof(IGnssCallback::GnssSvStatus));
+    out.numSvs = in.count;
+    if (out.numSvs > static_cast<uint32_t>(GnssMax::SVS_COUNT)) {
+        LOC_LOGW("%s]: Too many satellites %zd. Clamps to %d.",
+                __FUNCTION__,  out.numSvs, GnssMax::SVS_COUNT);
+        out.numSvs = static_cast<uint32_t>(GnssMax::SVS_COUNT);
+    }
+    for (size_t i = 0; i < out.numSvs; i++) {
+        IGnssCallback::GnssSvInfo& info = out.gnssSvList[i];
+        info.svid = in.gnssSvs[i].svId;
+        convertGnssConstellationType(in.gnssSvs[i].type, info.constellation);
+        info.cN0Dbhz = in.gnssSvs[i].cN0Dbhz;
+        info.elevationDegrees = in.gnssSvs[i].elevation;
+        info.azimuthDegrees = in.gnssSvs[i].azimuth;
+        info.svFlag = static_cast<uint8_t>(IGnssCallback::GnssSvFlags::NONE);
+        if (in.gnssSvs[i].gnssSvOptionsMask & GNSS_SV_OPTIONS_HAS_EPHEMER_BIT)
+            info.svFlag |= IGnssCallback::GnssSvFlags::HAS_EPHEMERIS_DATA;
+        if (in.gnssSvs[i].gnssSvOptionsMask & GNSS_SV_OPTIONS_HAS_ALMANAC_BIT)
+            info.svFlag |= IGnssCallback::GnssSvFlags::HAS_ALMANAC_DATA;
+        if (in.gnssSvs[i].gnssSvOptionsMask & GNSS_SV_OPTIONS_USED_IN_FIX_BIT)
+            info.svFlag |= IGnssCallback::GnssSvFlags::USED_IN_FIX;
+    }
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/location_api/GnssAPIClient.h b/sdm845/android/location_api/GnssAPIClient.h
new file mode 100644
index 0000000..d447157
--- /dev/null
+++ b/sdm845/android/location_api/GnssAPIClient.h
@@ -0,0 +1,104 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GNSS_API_CLINET_H
+#define GNSS_API_CLINET_H
+
+
+#include <android/hardware/gnss/1.0/IGnss.h>
+#include <android/hardware/gnss/1.0/IGnssCallback.h>
+#include <android/hardware/gnss/1.0/IGnssNiCallback.h>
+#include <LocationAPIClientBase.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+
+class GnssAPIClient : public LocationAPIClientBase
+{
+public:
+    GnssAPIClient(const sp<IGnssCallback>& gpsCb,
+            const sp<IGnssNiCallback>& niCb);
+    virtual ~GnssAPIClient();
+    GnssAPIClient(const GnssAPIClient&) = delete;
+    GnssAPIClient& operator=(const GnssAPIClient&) = delete;
+
+    // for GpsInterface
+    void gnssUpdateCallbacks(const sp<IGnssCallback>& gpsCb,
+            const sp<IGnssNiCallback>& niCb);
+    bool gnssStart();
+    bool gnssStop();
+    void gnssDeleteAidingData(IGnss::GnssAidingData aidingDataFlags);
+    bool gnssSetPositionMode(IGnss::GnssPositionMode mode,
+            IGnss::GnssPositionRecurrence recurrence,
+            uint32_t minIntervalMs,
+            uint32_t preferredAccuracyMeters,
+            uint32_t preferredTimeMs);
+
+    // for GpsNiInterface
+    void gnssNiRespond(int32_t notifId, IGnssNiCallback::GnssUserResponseType userResponse);
+
+    // for GnssConfigurationInterface
+    void gnssConfigurationUpdate(const GnssConfig& gnssConfig);
+
+    inline LocationCapabilitiesMask gnssGetCapabilities() const {
+        return mLocationCapabilitiesMask;
+    }
+    void requestCapabilities();
+
+    // callbacks we are interested in
+    void onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask) final;
+    void onTrackingCb(Location location) final;
+    void onGnssNiCb(uint32_t id, GnssNiNotification gnssNiNotification) final;
+    void onGnssSvCb(GnssSvNotification gnssSvNotification) final;
+    void onGnssNmeaCb(GnssNmeaNotification gnssNmeaNotification) final;
+
+    void onStartTrackingCb(LocationError error) final;
+    void onStopTrackingCb(LocationError error) final;
+
+private:
+    sp<IGnssCallback> mGnssCbIface;
+    sp<IGnssNiCallback> mGnssNiCbIface;
+
+    LocationCapabilitiesMask mLocationCapabilitiesMask;
+    bool mLocationCapabilitiesCached;
+
+    LocationOptions mLocationOptions;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // GNSS_API_CLINET_H
diff --git a/sdm845/android/location_api/LocationUtil.cpp b/sdm845/android/location_api/LocationUtil.cpp
new file mode 100644
index 0000000..311c0b2
--- /dev/null
+++ b/sdm845/android/location_api/LocationUtil.cpp
@@ -0,0 +1,153 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <LocationUtil.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void convertGnssLocation(Location& in, GnssLocation& out)
+{
+    memset(&out, 0, sizeof(GnssLocation));
+    if (in.flags & LOCATION_HAS_LAT_LONG_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_LAT_LONG;
+    if (in.flags & LOCATION_HAS_ALTITUDE_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_ALTITUDE;
+    if (in.flags & LOCATION_HAS_SPEED_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED;
+    if (in.flags & LOCATION_HAS_BEARING_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING;
+    if (in.flags & LOCATION_HAS_ACCURACY_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_HORIZONTAL_ACCURACY;
+    if (in.flags & LOCATION_HAS_VERTICAL_ACCURACY_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_VERTICAL_ACCURACY;
+    if (in.flags & LOCATION_HAS_SPEED_ACCURACY_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED_ACCURACY;
+    if (in.flags & LOCATION_HAS_BEARING_ACCURACY_BIT)
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING_ACCURACY;
+    out.latitudeDegrees = in.latitude;
+    out.longitudeDegrees = in.longitude;
+    out.altitudeMeters = in.altitude;
+    out.speedMetersPerSec = in.speed;
+    out.bearingDegrees = in.bearing;
+    out.horizontalAccuracyMeters = in.accuracy;
+    out.verticalAccuracyMeters = in.verticalAccuracy;
+    out.speedAccuracyMetersPerSecond = in.speedAccuracy;
+    out.bearingAccuracyDegrees = in.bearingAccuracy;
+    out.timestamp = static_cast<GnssUtcTime>(in.timestamp);
+}
+
+void convertGnssConstellationType(GnssSvType& in, GnssConstellationType& out)
+{
+    switch(in) {
+        case GNSS_SV_TYPE_GPS:
+            out = GnssConstellationType::GPS;
+            break;
+        case GNSS_SV_TYPE_SBAS:
+            out = GnssConstellationType::SBAS;
+            break;
+        case GNSS_SV_TYPE_GLONASS:
+            out = GnssConstellationType::GLONASS;
+            break;
+        case GNSS_SV_TYPE_QZSS:
+            out = GnssConstellationType::QZSS;
+            break;
+        case GNSS_SV_TYPE_BEIDOU:
+            out = GnssConstellationType::BEIDOU;
+            break;
+        case GNSS_SV_TYPE_GALILEO:
+            out = GnssConstellationType::GALILEO;
+            break;
+        case GNSS_SV_TYPE_UNKNOWN:
+        default:
+            out = GnssConstellationType::UNKNOWN;
+            break;
+    }
+}
+
+void convertGnssEphemerisType(GnssEphemerisType& in, GnssDebug::SatelliteEphemerisType& out)
+{
+    switch(in) {
+        case GNSS_EPH_TYPE_EPHEMERIS:
+            out = GnssDebug::SatelliteEphemerisType::EPHEMERIS;
+            break;
+        case GNSS_EPH_TYPE_ALMANAC:
+            out = GnssDebug::SatelliteEphemerisType::ALMANAC_ONLY;
+            break;
+        case GNSS_EPH_TYPE_UNKNOWN:
+        default:
+            out = GnssDebug::SatelliteEphemerisType::NOT_AVAILABLE;
+            break;
+    }
+}
+
+void convertGnssEphemerisSource(GnssEphemerisSource& in, GnssDebug::SatelliteEphemerisSource& out)
+{
+    switch(in) {
+        case GNSS_EPH_SOURCE_DEMODULATED:
+            out = GnssDebug::SatelliteEphemerisSource::DEMODULATED;
+            break;
+        case GNSS_EPH_SOURCE_SUPL_PROVIDED:
+            out = GnssDebug::SatelliteEphemerisSource::SUPL_PROVIDED;
+            break;
+        case GNSS_EPH_SOURCE_OTHER_SERVER_PROVIDED:
+            out = GnssDebug::SatelliteEphemerisSource::OTHER_SERVER_PROVIDED;
+            break;
+        case GNSS_EPH_SOURCE_LOCAL:
+        case GNSS_EPH_SOURCE_UNKNOWN:
+        default:
+            out = GnssDebug::SatelliteEphemerisSource::OTHER;
+            break;
+    }
+}
+
+void convertGnssEphemerisHealth(GnssEphemerisHealth& in, GnssDebug::SatelliteEphemerisHealth& out)
+{
+    switch(in) {
+        case GNSS_EPH_HEALTH_GOOD:
+            out = GnssDebug::SatelliteEphemerisHealth::GOOD;
+            break;
+        case GNSS_EPH_HEALTH_BAD:
+            out = GnssDebug::SatelliteEphemerisHealth::BAD;
+            break;
+        case GNSS_EPH_HEALTH_UNKNOWN:
+        default:
+            out = GnssDebug::SatelliteEphemerisHealth::UNKNOWN;
+            break;
+    }
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/location_api/LocationUtil.h b/sdm845/android/location_api/LocationUtil.h
new file mode 100644
index 0000000..44d5e02
--- /dev/null
+++ b/sdm845/android/location_api/LocationUtil.h
@@ -0,0 +1,54 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOCATION_UTIL_H
+#define LOCATION_UTIL_H
+
+#include <android/hardware/gnss/1.0/types.h>
+#include <LocationAPI.h>
+#include <GnssDebug.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+void convertGnssLocation(Location& in, GnssLocation& out);
+void convertGnssConstellationType(GnssSvType& in, GnssConstellationType& out);
+void convertGnssEphemerisType(GnssEphemerisType& in, GnssDebug::SatelliteEphemerisType& out);
+void convertGnssEphemerisSource(GnssEphemerisSource& in, GnssDebug::SatelliteEphemerisSource& out);
+void convertGnssEphemerisHealth(GnssEphemerisHealth& in, GnssDebug::SatelliteEphemerisHealth& out);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // LOCATION_UTIL_H
diff --git a/sdm845/android/location_api/MeasurementAPIClient.cpp b/sdm845/android/location_api/MeasurementAPIClient.cpp
new file mode 100644
index 0000000..0f998a0
--- /dev/null
+++ b/sdm845/android/location_api/MeasurementAPIClient.cpp
@@ -0,0 +1,281 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_MeasurementAPIClient"
+
+#include <log_util.h>
+#include <loc_cfg.h>
+
+#include "LocationUtil.h"
+#include "MeasurementAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+static void convertGnssData(GnssMeasurementsNotification& in,
+        IGnssMeasurementCallback::GnssData& out);
+static void convertGnssMeasurement(GnssMeasurementsData& in,
+        IGnssMeasurementCallback::GnssMeasurement& out);
+static void convertGnssClock(GnssMeasurementsClock& in, IGnssMeasurementCallback::GnssClock& out);
+
+MeasurementAPIClient::MeasurementAPIClient() :
+    mGnssMeasurementCbIface(nullptr),
+    mLocationCapabilitiesMask(0)
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    pthread_mutex_init(&mLock, nullptr);
+    pthread_cond_init (&mCond, nullptr);
+
+    // set default LocationOptions.
+    memset(&mLocationOptions, 0, sizeof(LocationOptions));
+    mLocationOptions.size = sizeof(LocationOptions);
+    mLocationOptions.minInterval = 1000;
+    mLocationOptions.minDistance = 0;
+    mLocationOptions.mode = GNSS_SUPL_MODE_STANDALONE;
+}
+
+MeasurementAPIClient::~MeasurementAPIClient()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    pthread_cond_destroy(&mCond);
+    pthread_mutex_destroy(&mLock);
+}
+
+// for GpsInterface
+Return<IGnssMeasurement::GnssMeasurementStatus>
+MeasurementAPIClient::measurementSetCallback(const sp<IGnssMeasurementCallback>& callback)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    mGnssMeasurementCbIface = callback;
+
+    LocationCallbacks locationCallbacks;
+    locationCallbacks.size = sizeof(LocationCallbacks);
+
+    locationCallbacks.trackingCb = nullptr;
+    locationCallbacks.batchingCb = nullptr;
+    locationCallbacks.geofenceBreachCb = nullptr;
+    locationCallbacks.geofenceStatusCb = nullptr;
+    locationCallbacks.gnssLocationInfoCb = nullptr;
+    locationCallbacks.gnssNiCb = nullptr;
+    locationCallbacks.gnssSvCb = nullptr;
+    locationCallbacks.gnssNmeaCb = nullptr;
+
+    locationCallbacks.gnssMeasurementsCb = nullptr;
+    if (mGnssMeasurementCbIface != nullptr) {
+        locationCallbacks.gnssMeasurementsCb =
+            [this](GnssMeasurementsNotification gnssMeasurementsNotification) {
+                onGnssMeasurementsCb(gnssMeasurementsNotification);
+            };
+    }
+
+    locAPISetCallbacks(locationCallbacks);
+
+    while (!mLocationCapabilitiesMask) {
+        LOC_LOGD("%s]: wait for capabilities...", __FUNCTION__);
+        pthread_mutex_lock(&mLock);
+        pthread_cond_wait(&mCond, &mLock);
+        pthread_mutex_unlock(&mLock);
+    }
+    if (mLocationCapabilitiesMask & LOCATION_CAPABILITIES_GNSS_MSB_BIT)
+        mLocationOptions.mode = GNSS_SUPL_MODE_MSB;
+    else if (mLocationCapabilitiesMask & LOCATION_CAPABILITIES_GNSS_MSA_BIT)
+        mLocationOptions.mode = GNSS_SUPL_MODE_MSA;
+    LOC_LOGD("%s]: start tracking session", __FUNCTION__);
+    locAPIStartTracking(mLocationOptions);
+
+    return IGnssMeasurement::GnssMeasurementStatus::SUCCESS;
+}
+
+// for GpsMeasurementInterface
+void MeasurementAPIClient::measurementClose() {
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    pthread_mutex_lock(&mLock);
+    mGnssMeasurementCbIface = nullptr;
+    pthread_mutex_unlock(&mLock);
+}
+
+// callbacks
+void MeasurementAPIClient::onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, capabilitiesMask);
+    mLocationCapabilitiesMask = capabilitiesMask;
+    pthread_mutex_lock(&mLock);
+    pthread_cond_signal(&mCond);
+    pthread_mutex_unlock(&mLock);
+}
+
+void MeasurementAPIClient::onGnssMeasurementsCb(
+        GnssMeasurementsNotification gnssMeasurementsNotification)
+{
+    LOC_LOGD("%s]: (count: %zu)", __FUNCTION__, gnssMeasurementsNotification.count);
+    // we don't need to lock the mutext
+    // if mGnssMeasurementCbIface is set to nullptr
+    if (mGnssMeasurementCbIface != nullptr) {
+        pthread_mutex_lock(&mLock);
+        if (mGnssMeasurementCbIface != nullptr) {
+            IGnssMeasurementCallback::GnssData gnssData;
+            convertGnssData(gnssMeasurementsNotification, gnssData);
+            mGnssMeasurementCbIface->GnssMeasurementCb(gnssData);
+        }
+        pthread_mutex_unlock(&mLock);
+    }
+}
+
+static void convertGnssMeasurement(GnssMeasurementsData& in,
+        IGnssMeasurementCallback::GnssMeasurement& out)
+{
+    memset(&out, 0, sizeof(IGnssMeasurementCallback::GnssMeasurement));
+    if (in.flags & GNSS_MEASUREMENTS_DATA_SIGNAL_TO_NOISE_RATIO_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_SNR;
+    if (in.flags & GNSS_MEASUREMENTS_DATA_CARRIER_FREQUENCY_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_CARRIER_FREQUENCY;
+    if (in.flags & GNSS_MEASUREMENTS_DATA_CARRIER_CYCLES_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_CARRIER_CYCLES;
+    if (in.flags & GNSS_MEASUREMENTS_DATA_CARRIER_PHASE_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_CARRIER_PHASE;
+    if (in.flags & GNSS_MEASUREMENTS_DATA_CARRIER_PHASE_UNCERTAINTY_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_CARRIER_PHASE_UNCERTAINTY;
+    if (in.flags & GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT)
+        out.flags |= IGnssMeasurementCallback::GnssMeasurementFlags::HAS_AUTOMATIC_GAIN_CONTROL;
+    out.svid = in.svId;
+    convertGnssConstellationType(in.svType, out.constellation);
+    out.timeOffsetNs = in.timeOffsetNs;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_CODE_LOCK_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_CODE_LOCK;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_BIT_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BIT_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_SUBFRAME_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SUBFRAME_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_TOW_DECODED_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_TOW_DECODED;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_MSEC_AMBIGUOUS_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_MSEC_AMBIGUOUS;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_SYMBOL_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SYMBOL_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_GLO_STRING_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GLO_STRING_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_GLO_TOD_DECODED_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GLO_TOD_DECODED;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_BDS_D2_BIT_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BDS_D2_BIT_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_BDS_D2_SUBFRAME_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BDS_D2_SUBFRAME_SYNC;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1BC_CODE_LOCK_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1BC_CODE_LOCK;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1C_2ND_CODE_LOCK_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1C_2ND_CODE_LOCK;
+    if (in.stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1B_PAGE_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1B_PAGE_SYNC;
+    if (in.stateMask &  GNSS_MEASUREMENTS_STATE_SBAS_SYNC_BIT)
+        out.state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SBAS_SYNC;
+    out.receivedSvTimeInNs = in.receivedSvTimeNs;
+    out.receivedSvTimeUncertaintyInNs = in.receivedSvTimeUncertaintyNs;
+    out.cN0DbHz = in.carrierToNoiseDbHz;
+    out.pseudorangeRateMps = in.pseudorangeRateMps;
+    out.pseudorangeRateUncertaintyMps = in.pseudorangeRateUncertaintyMps;
+    if (in.adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_VALID_BIT)
+        out.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_VALID;
+    if (in.adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_RESET_BIT)
+        out.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_RESET;
+    if (in.adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_CYCLE_SLIP_BIT)
+        out.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_CYCLE_SLIP;
+    out.accumulatedDeltaRangeM = in.adrMeters;
+    out.accumulatedDeltaRangeUncertaintyM = in.adrUncertaintyMeters;
+    out.carrierFrequencyHz = in.carrierFrequencyHz;
+    out.carrierCycles = in.carrierCycles;
+    out.carrierPhase = in.carrierPhase;
+    out.carrierPhaseUncertainty = in.carrierPhaseUncertainty;
+    uint8_t indicator =
+        static_cast<uint8_t>(IGnssMeasurementCallback::GnssMultipathIndicator::INDICATOR_UNKNOWN);
+    if (in.multipathIndicator & GNSS_MEASUREMENTS_MULTIPATH_INDICATOR_PRESENT)
+        indicator |= IGnssMeasurementCallback::GnssMultipathIndicator::INDICATOR_PRESENT;
+    if (in.multipathIndicator & GNSS_MEASUREMENTS_MULTIPATH_INDICATOR_NOT_PRESENT)
+        indicator |= IGnssMeasurementCallback::GnssMultipathIndicator::INDICATIOR_NOT_PRESENT;
+    out.multipathIndicator =
+        static_cast<IGnssMeasurementCallback::GnssMultipathIndicator>(indicator);
+    out.snrDb = in.signalToNoiseRatioDb;
+    out.agcLevelDb = in.agcLevelDb;
+}
+
+static void convertGnssClock(GnssMeasurementsClock& in, IGnssMeasurementCallback::GnssClock& out)
+{
+    memset(&out, 0, sizeof(IGnssMeasurementCallback::GnssClock));
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_LEAP_SECOND_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_LEAP_SECOND;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_TIME_UNCERTAINTY_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_TIME_UNCERTAINTY;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_FULL_BIAS_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_FULL_BIAS;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_BIAS_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_BIAS;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_BIAS_UNCERTAINTY_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_BIAS_UNCERTAINTY;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_DRIFT_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_DRIFT;
+    if (in.flags & GNSS_MEASUREMENTS_CLOCK_FLAGS_DRIFT_UNCERTAINTY_BIT)
+        out.gnssClockFlags |= IGnssMeasurementCallback::GnssClockFlags::HAS_DRIFT_UNCERTAINTY;
+    out.leapSecond = in.leapSecond;
+    out.timeNs = in.timeNs;
+    out.timeUncertaintyNs = in.timeUncertaintyNs;
+    out.fullBiasNs = in.fullBiasNs;
+    out.biasNs = in.biasNs;
+    out.biasUncertaintyNs = in.biasUncertaintyNs;
+    out.driftNsps = in.driftNsps;
+    out.driftUncertaintyNsps = in.driftUncertaintyNsps;
+    out.hwClockDiscontinuityCount = in.hwClockDiscontinuityCount;
+}
+
+static void convertGnssData(GnssMeasurementsNotification& in,
+        IGnssMeasurementCallback::GnssData& out)
+{
+    out.measurementCount = in.count;
+    if (out.measurementCount > static_cast<uint32_t>(GnssMax::SVS_COUNT)) {
+        LOC_LOGW("%s]: Too many measurement %zd. Clamps to %d.",
+                __FUNCTION__,  out.measurementCount, GnssMax::SVS_COUNT);
+        out.measurementCount = static_cast<uint32_t>(GnssMax::SVS_COUNT);
+    }
+    for (size_t i = 0; i < out.measurementCount; i++) {
+        convertGnssMeasurement(in.measurements[i], out.measurements[i]);
+    }
+    convertGnssClock(in.clock, out.clock);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/sdm845/android/location_api/MeasurementAPIClient.h b/sdm845/android/location_api/MeasurementAPIClient.h
new file mode 100644
index 0000000..e202192
--- /dev/null
+++ b/sdm845/android/location_api/MeasurementAPIClient.h
@@ -0,0 +1,81 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef MEASUREMENT_API_CLINET_H
+#define MEASUREMENT_API_CLINET_H
+
+
+#include <android/hardware/gnss/1.0/IGnssMeasurement.h>
+#include <android/hardware/gnss/1.0/IGnssMeasurementCallback.h>
+#include <LocationAPIClientBase.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssMeasurement;
+using ::android::sp;
+
+class MeasurementAPIClient : public LocationAPIClientBase
+{
+public:
+    MeasurementAPIClient();
+    virtual ~MeasurementAPIClient();
+    MeasurementAPIClient(const MeasurementAPIClient&) = delete;
+    MeasurementAPIClient& operator=(const MeasurementAPIClient&) = delete;
+
+    // for GpsMeasurementInterface
+    Return<IGnssMeasurement::GnssMeasurementStatus> measurementSetCallback(
+            const sp<IGnssMeasurementCallback>& callback);
+    void measurementClose();
+
+    // callbacks we are interested in
+    void onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask) final;
+    void onGnssMeasurementsCb(GnssMeasurementsNotification gnssMeasurementsNotification) final;
+
+private:
+    pthread_mutex_t mLock;
+    pthread_cond_t mCond;
+
+    sp<IGnssMeasurementCallback> mGnssMeasurementCbIface;
+
+    LocationCapabilitiesMask mLocationCapabilitiesMask;
+
+    LocationOptions mLocationOptions;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // MEASUREMENT_API_CLINET_H
diff --git a/sdm845/android/service.cpp b/sdm845/android/service.cpp
new file mode 100644
index 0000000..5779e67
--- /dev/null
+++ b/sdm845/android/service.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ * Not a Contribution
+ */
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.gnss@1.0-service-qti"
+
+#include <android/hardware/gnss/1.0/IGnss.h>
+#include <hidl/LegacySupport.h>
+
+using android::hardware::gnss::V1_0::IGnss;
+using android::hardware::defaultPassthroughServiceImplementation;
+
+int main() {
+    return defaultPassthroughServiceImplementation<IGnss>();
+}
diff --git a/sdm845/configure.ac b/sdm845/configure.ac
new file mode 100644
index 0000000..cf991c6
--- /dev/null
+++ b/sdm845/configure.ac
@@ -0,0 +1,91 @@
+# configure.ac -- Autoconf script for gps loc_hal
+#
+# Process this file with autoconf to produce a configure script
+
+# Requires autoconf tool later than 2.61
+AC_PREREQ(2.61)
+# Initialize the gps loc-hal package version 1.0.0
+AC_INIT([loc-hal],1.0.0)
+# Does not strictly follow GNU Coding standards
+AM_INIT_AUTOMAKE([foreign])
+# Disables auto rebuilding of configure, Makefile.ins
+AM_MAINTAINER_MODE
+# Verifies the --srcdir is correct by checking for the path
+AC_CONFIG_SRCDIR([utils/loc_cfg.cpp])
+# defines some macros variable to be included by source
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+# Checks for libraries.
+PKG_CHECK_MODULES([QMI], [qmi])
+AC_SUBST([QMI_CFLAGS])
+AC_SUBST([QMI_LIBS])
+
+PKG_CHECK_MODULES([QMIF], [qmi-framework])
+AC_SUBST([QMIF_CFLAGS])
+AC_SUBST([QMIF_LIBS])
+
+PKG_CHECK_MODULES([DATA], [data])
+AC_SUBST([DATA_CFLAGS])
+AC_SUBST([DATA_LIBS])
+
+PKG_CHECK_MODULES([LOCPLA], [loc-pla])
+AC_SUBST([LOCPLA_CFLAGS])
+AC_SUBST([LOCPLA_LIBS])
+
+PKG_CHECK_MODULES([GPSUTILS], [gps-utils])
+AC_SUBST([GPSUTILS_CFLAGS])
+AC_SUBST([GPSUTILS_LIBS])
+
+AC_ARG_WITH([core_includes],
+      AC_HELP_STRING([--with-core-includes=@<:@dir@:>@],
+         [Specify the location of the core headers]),
+      [core_incdir=$withval],
+      with_core_includes=no)
+
+if test "x$with_core_includes" != "xno"; then
+   CPPFLAGS="${CPPFLAGS} -I${core_incdir}"
+fi
+
+AC_SUBST([CPPFLAGS])
+
+AC_ARG_WITH([glib],
+      AC_HELP_STRING([--with-glib],
+         [enable glib, building HLOS systems which use glib]))
+
+if (test "x${with_glib}" = "xyes"); then
+        AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
+        PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GThread >= 2.16 is required))
+        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GLib >= 2.16 is required))
+        GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
+        GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
+
+        AC_SUBST(GLIB_CFLAGS)
+        AC_SUBST(GLIB_LIBS)
+fi
+
+AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
+
+AC_CONFIG_FILES([ \
+        Makefile \
+        utils/Makefile \
+        core/Makefile \
+        loc_api/Makefile \
+        loc-hal.pc \
+        ])
+
+AC_OUTPUT
diff --git a/sdm845/core/Android.mk b/sdm845/core/Android.mk
new file mode 100644
index 0000000..313ee25
--- /dev/null
+++ b/sdm845/core/Android.mk
@@ -0,0 +1,60 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libloc_core
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+ifeq ($(TARGET_DEVICE),apq8026_lw)
+LOCAL_CFLAGS += -DPDK_FEATURE_SET
+else ifeq ($(BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET),true)
+LOCAL_CFLAGS += -DPDK_FEATURE_SET
+endif
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libutils \
+    libcutils \
+    libgps.utils \
+    libdl \
+    liblog \
+    libloc_pla
+
+LOCAL_SRC_FILES += \
+    LocApiBase.cpp \
+    LocAdapterBase.cpp \
+    ContextBase.cpp \
+    LocDualContext.cpp \
+    loc_core_log.cpp \
+    SystemStatus.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+     -D_ANDROID_
+
+LOCAL_C_INCLUDES:= \
+    $(TARGET_OUT_HEADERS)/gps.utils \
+    $(TARGET_OUT_HEADERS)/libloc_pla \
+    $(TARGET_OUT_HEADERS)/liblocation_api
+
+LOCAL_COPY_HEADERS_TO:= libloc_core/
+LOCAL_COPY_HEADERS:= \
+    LocApiBase.h \
+    LocAdapterBase.h \
+    ContextBase.h \
+    LocDualContext.h \
+    LBSProxyBase.h \
+    UlpProxyBase.h \
+    loc_core_log.h \
+    LocAdapterProxyBase.h \
+    SystemStatus.h
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/core/ContextBase.cpp b/sdm845/core/ContextBase.cpp
new file mode 100644
index 0000000..8af48fc
--- /dev/null
+++ b/sdm845/core/ContextBase.cpp
@@ -0,0 +1,248 @@
+/* Copyright (c) 2011-2014,2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_CtxBase"
+
+#include <dlfcn.h>
+#include <cutils/sched_policy.h>
+#include <unistd.h>
+#include <ContextBase.h>
+#include <msg_q.h>
+#include <loc_target.h>
+#include <platform_lib_includes.h>
+#include <loc_log.h>
+
+namespace loc_core {
+
+loc_gps_cfg_s_type ContextBase::mGps_conf {};
+loc_sap_cfg_s_type ContextBase::mSap_conf {};
+
+const loc_param_s_type ContextBase::mGps_conf_table[] =
+{
+  {"GPS_LOCK",                       &mGps_conf.GPS_LOCK,                       NULL, 'n'},
+  {"SUPL_VER",                       &mGps_conf.SUPL_VER,                       NULL, 'n'},
+  {"LPP_PROFILE",                    &mGps_conf.LPP_PROFILE,                    NULL, 'n'},
+  {"A_GLONASS_POS_PROTOCOL_SELECT",  &mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT,  NULL, 'n'},
+  {"LPPE_CP_TECHNOLOGY",             &mGps_conf.LPPE_CP_TECHNOLOGY,             NULL, 'n'},
+  {"LPPE_UP_TECHNOLOGY",             &mGps_conf.LPPE_UP_TECHNOLOGY,             NULL, 'n'},
+  {"AGPS_CERT_WRITABLE_MASK",        &mGps_conf.AGPS_CERT_WRITABLE_MASK,        NULL, 'n'},
+  {"SUPL_MODE",                      &mGps_conf.SUPL_MODE,                      NULL, 'n'},
+  {"SUPL_ES",                        &mGps_conf.SUPL_ES,                        NULL, 'n'},
+  {"INTERMEDIATE_POS",               &mGps_conf.INTERMEDIATE_POS,               NULL, 'n'},
+  {"ACCURACY_THRES",                 &mGps_conf.ACCURACY_THRES,                 NULL, 'n'},
+  {"NMEA_PROVIDER",                  &mGps_conf.NMEA_PROVIDER,                  NULL, 'n'},
+  {"CAPABILITIES",                   &mGps_conf.CAPABILITIES,                   NULL, 'n'},
+  {"XTRA_VERSION_CHECK",             &mGps_conf.XTRA_VERSION_CHECK,             NULL, 'n'},
+  {"XTRA_SERVER_1",                  &mGps_conf.XTRA_SERVER_1,                  NULL, 's'},
+  {"XTRA_SERVER_2",                  &mGps_conf.XTRA_SERVER_2,                  NULL, 's'},
+  {"XTRA_SERVER_3",                  &mGps_conf.XTRA_SERVER_3,                  NULL, 's'},
+  {"USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL",  &mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL,          NULL, 'n'},
+  {"AGPS_CONFIG_INJECT",             &mGps_conf.AGPS_CONFIG_INJECT,             NULL, 'n'},
+  {"EXTERNAL_DR_ENABLED",            &mGps_conf.EXTERNAL_DR_ENABLED,                  NULL, 'n'},
+};
+
+const loc_param_s_type ContextBase::mSap_conf_table[] =
+{
+  {"GYRO_BIAS_RANDOM_WALK",          &mSap_conf.GYRO_BIAS_RANDOM_WALK,          &mSap_conf.GYRO_BIAS_RANDOM_WALK_VALID, 'f'},
+  {"ACCEL_RANDOM_WALK_SPECTRAL_DENSITY",     &mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY,    &mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID, 'f'},
+  {"ANGLE_RANDOM_WALK_SPECTRAL_DENSITY",     &mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY,    &mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID, 'f'},
+  {"RATE_RANDOM_WALK_SPECTRAL_DENSITY",      &mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY,     &mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID, 'f'},
+  {"VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY",  &mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY, &mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID, 'f'},
+  {"SENSOR_ACCEL_BATCHES_PER_SEC",   &mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC,   NULL, 'n'},
+  {"SENSOR_ACCEL_SAMPLES_PER_BATCH", &mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH, NULL, 'n'},
+  {"SENSOR_GYRO_BATCHES_PER_SEC",    &mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC,    NULL, 'n'},
+  {"SENSOR_GYRO_SAMPLES_PER_BATCH",  &mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH,  NULL, 'n'},
+  {"SENSOR_ACCEL_BATCHES_PER_SEC_HIGH",   &mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC_HIGH,   NULL, 'n'},
+  {"SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH", &mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH, NULL, 'n'},
+  {"SENSOR_GYRO_BATCHES_PER_SEC_HIGH",    &mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC_HIGH,    NULL, 'n'},
+  {"SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH",  &mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH,  NULL, 'n'},
+  {"SENSOR_CONTROL_MODE",            &mSap_conf.SENSOR_CONTROL_MODE,            NULL, 'n'},
+  {"SENSOR_USAGE",                   &mSap_conf.SENSOR_USAGE,                   NULL, 'n'},
+  {"SENSOR_ALGORITHM_CONFIG_MASK",   &mSap_conf.SENSOR_ALGORITHM_CONFIG_MASK,   NULL, 'n'},
+  {"SENSOR_PROVIDER",                &mSap_conf.SENSOR_PROVIDER,                NULL, 'n'}
+};
+
+void ContextBase::readConfig()
+{
+   /*Defaults for gps.conf*/
+   mGps_conf.INTERMEDIATE_POS = 0;
+   mGps_conf.ACCURACY_THRES = 0;
+   mGps_conf.NMEA_PROVIDER = 0;
+   mGps_conf.GPS_LOCK = 0;
+   mGps_conf.SUPL_VER = 0x10000;
+   mGps_conf.SUPL_MODE = 0x1;
+   mGps_conf.SUPL_ES = 0;
+   mGps_conf.CAPABILITIES = 0x7;
+   /* LTE Positioning Profile configuration is disable by default*/
+   mGps_conf.LPP_PROFILE = 0;
+   /*By default no positioning protocol is selected on A-GLONASS system*/
+   mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT = 0;
+   /*XTRA version check is disabled by default*/
+   mGps_conf.XTRA_VERSION_CHECK=0;
+   /*Use emergency PDN by default*/
+   mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL = 1;
+   /* By default no LPPe CP technology is enabled*/
+   mGps_conf.LPPE_CP_TECHNOLOGY = 0;
+   /* By default no LPPe UP technology is enabled*/
+   mGps_conf.LPPE_UP_TECHNOLOGY = 0;
+
+   /*Defaults for sap.conf*/
+   mSap_conf.GYRO_BIAS_RANDOM_WALK = 0;
+   mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC = 2;
+   mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH = 5;
+   mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC = 2;
+   mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH = 5;
+   mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC_HIGH = 4;
+   mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH = 25;
+   mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC_HIGH = 4;
+   mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH = 25;
+   mSap_conf.SENSOR_CONTROL_MODE = 0; /* AUTO */
+   mSap_conf.SENSOR_USAGE = 0; /* Enabled */
+   mSap_conf.SENSOR_ALGORITHM_CONFIG_MASK = 0; /* INS Disabled = FALSE*/
+   /* Values MUST be set by OEMs in configuration for sensor-assisted
+      navigation to work. There are NO default values */
+   mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY = 0;
+   mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY = 0;
+   mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY = 0;
+   mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY = 0;
+   mSap_conf.GYRO_BIAS_RANDOM_WALK_VALID = 0;
+   mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID = 0;
+   mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID = 0;
+   mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID = 0;
+   mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID = 0;
+   /* default provider is SSC */
+   mSap_conf.SENSOR_PROVIDER = 1;
+
+   /* None of the 10 slots for agps certificates are writable by default */
+   mGps_conf.AGPS_CERT_WRITABLE_MASK = 0;
+
+   /* inject supl config to modem with config values from config.xml or gps.conf, default 1 */
+   mGps_conf.AGPS_CONFIG_INJECT = 1;
+
+   UTIL_READ_CONF(LOC_PATH_GPS_CONF, mGps_conf_table);
+   UTIL_READ_CONF(LOC_PATH_SAP_CONF, mSap_conf_table);
+}
+
+uint32_t ContextBase::getCarrierCapabilities() {
+    #define carrierMSA (uint32_t)0x2
+    #define carrierMSB (uint32_t)0x1
+    #define gpsConfMSA (uint32_t)0x4
+    #define gpsConfMSB (uint32_t)0x2
+    uint32_t capabilities = mGps_conf.CAPABILITIES;
+    if ((mGps_conf.SUPL_MODE & carrierMSA) != carrierMSA) {
+        capabilities &= ~gpsConfMSA;
+    }
+    if ((mGps_conf.SUPL_MODE & carrierMSB) != carrierMSB) {
+        capabilities &= ~gpsConfMSB;
+    }
+
+    LOC_LOGV("getCarrierCapabilities: CAPABILITIES %x, SUPL_MODE %x, carrier capabilities %x",
+             mGps_conf.CAPABILITIES, mGps_conf.SUPL_MODE, capabilities);
+    return capabilities;
+}
+
+LBSProxyBase* ContextBase::getLBSProxy(const char* libName)
+{
+    LBSProxyBase* proxy = NULL;
+    LOC_LOGD("%s:%d]: getLBSProxy libname: %s\n", __func__, __LINE__, libName);
+    void* lib = dlopen(libName, RTLD_NOW);
+
+    if ((void*)NULL != lib) {
+        getLBSProxy_t* getter = (getLBSProxy_t*)dlsym(lib, "getLBSProxy");
+        if (NULL != getter) {
+            proxy = (*getter)();
+        }
+    }
+    else
+    {
+        LOC_LOGW("%s:%d]: FAILED TO LOAD libname: %s\n", __func__, __LINE__, libName);
+    }
+    if (NULL == proxy) {
+        proxy = new LBSProxyBase();
+    }
+    LOC_LOGD("%s:%d]: Exiting\n", __func__, __LINE__);
+    return proxy;
+}
+
+LocApiBase* ContextBase::createLocApi(LOC_API_ADAPTER_EVENT_MASK_T exMask)
+{
+    LocApiBase* locApi = NULL;
+
+    // Check the target
+    if (TARGET_NO_GNSS != loc_get_target()){
+
+        if (NULL == (locApi = mLBSProxy->getLocApi(mMsgTask, exMask, this))) {
+            void *handle = NULL;
+            //try to see if LocApiV02 is present
+            if ((handle = dlopen("libloc_api_v02.so", RTLD_NOW)) != NULL) {
+                LOC_LOGD("%s:%d]: libloc_api_v02.so is present", __func__, __LINE__);
+                getLocApi_t* getter = (getLocApi_t*) dlsym(handle, "getLocApi");
+                if (getter != NULL) {
+                    LOC_LOGD("%s:%d]: getter is not NULL for LocApiV02", __func__,
+                            __LINE__);
+                    locApi = (*getter)(mMsgTask, exMask, this);
+                }
+            }
+            // only RPC is the option now
+            else {
+                LOC_LOGD("%s:%d]: libloc_api_v02.so is NOT present. Trying RPC",
+                        __func__, __LINE__);
+                handle = dlopen("libloc_api-rpc-qc.so", RTLD_NOW);
+                if (NULL != handle) {
+                    getLocApi_t* getter = (getLocApi_t*) dlsym(handle, "getLocApi");
+                    if (NULL != getter) {
+                        LOC_LOGD("%s:%d]: getter is not NULL in RPC", __func__,
+                                __LINE__);
+                        locApi = (*getter)(mMsgTask, exMask, this);
+                    }
+                }
+            }
+        }
+    }
+
+    // locApi could still be NULL at this time
+    // we would then create a dummy one
+    if (NULL == locApi) {
+        locApi = new LocApiBase(mMsgTask, exMask, this);
+    }
+
+    return locApi;
+}
+
+ContextBase::ContextBase(const MsgTask* msgTask,
+                         LOC_API_ADAPTER_EVENT_MASK_T exMask,
+                         const char* libName) :
+    mLBSProxy(getLBSProxy(libName)),
+    mMsgTask(msgTask),
+    mLocApi(createLocApi(exMask)),
+    mLocApiProxy(mLocApi->getLocApiProxy())
+{
+}
+
+}
diff --git a/sdm845/core/ContextBase.h b/sdm845/core/ContextBase.h
new file mode 100644
index 0000000..83de999
--- /dev/null
+++ b/sdm845/core/ContextBase.h
@@ -0,0 +1,148 @@
+/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_CONTEXT_BASE__
+#define __LOC_CONTEXT_BASE__
+
+#include <stdbool.h>
+#include <ctype.h>
+#include <MsgTask.h>
+#include <LocApiBase.h>
+#include <LBSProxyBase.h>
+#include <loc_cfg.h>
+
+#define MAX_XTRA_SERVER_URL_LENGTH 256
+
+/* GPS.conf support */
+/* NOTE: the implementaiton of the parser casts number
+   fields to 32 bit. To ensure all 'n' fields working,
+   they must all be 32 bit fields. */
+typedef struct loc_gps_cfg_s
+{
+    uint32_t       INTERMEDIATE_POS;
+    uint32_t       ACCURACY_THRES;
+    uint32_t       SUPL_VER;
+    uint32_t       SUPL_MODE;
+    uint32_t       SUPL_ES;
+    uint32_t       CAPABILITIES;
+    uint32_t       LPP_PROFILE;
+    uint32_t       XTRA_VERSION_CHECK;
+    char           XTRA_SERVER_1[MAX_XTRA_SERVER_URL_LENGTH];
+    char           XTRA_SERVER_2[MAX_XTRA_SERVER_URL_LENGTH];
+    char           XTRA_SERVER_3[MAX_XTRA_SERVER_URL_LENGTH];
+    uint32_t       USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL;
+    uint32_t       NMEA_PROVIDER;
+    uint32_t       GPS_LOCK;
+    uint32_t       A_GLONASS_POS_PROTOCOL_SELECT;
+    uint32_t       AGPS_CERT_WRITABLE_MASK;
+    uint32_t       AGPS_CONFIG_INJECT;
+    uint32_t       LPPE_CP_TECHNOLOGY;
+    uint32_t       LPPE_UP_TECHNOLOGY;
+    uint32_t       EXTERNAL_DR_ENABLED;
+} loc_gps_cfg_s_type;
+
+/* NOTE: the implementaiton of the parser casts number
+   fields to 32 bit. To ensure all 'n' fields working,
+   they must all be 32 bit fields. */
+/* Meanwhile, *_valid fields are 8 bit fields, and 'f'
+   fields are double. Rigid as they are, it is the
+   the status quo, until the parsing mechanism is
+   change, that is. */
+typedef struct
+{
+    uint8_t        GYRO_BIAS_RANDOM_WALK_VALID;
+    double         GYRO_BIAS_RANDOM_WALK;
+    uint32_t       SENSOR_ACCEL_BATCHES_PER_SEC;
+    uint32_t       SENSOR_ACCEL_SAMPLES_PER_BATCH;
+    uint32_t       SENSOR_GYRO_BATCHES_PER_SEC;
+    uint32_t       SENSOR_GYRO_SAMPLES_PER_BATCH;
+    uint32_t       SENSOR_ACCEL_BATCHES_PER_SEC_HIGH;
+    uint32_t       SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH;
+    uint32_t       SENSOR_GYRO_BATCHES_PER_SEC_HIGH;
+    uint32_t       SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH;
+    uint32_t       SENSOR_CONTROL_MODE;
+    uint32_t       SENSOR_USAGE;
+    uint32_t       SENSOR_ALGORITHM_CONFIG_MASK;
+    uint8_t        ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID;
+    double         ACCEL_RANDOM_WALK_SPECTRAL_DENSITY;
+    uint8_t        ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID;
+    double         ANGLE_RANDOM_WALK_SPECTRAL_DENSITY;
+    uint8_t        RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID;
+    double         RATE_RANDOM_WALK_SPECTRAL_DENSITY;
+    uint8_t        VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID;
+    double         VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY;
+    uint32_t       SENSOR_PROVIDER;
+} loc_sap_cfg_s_type;
+
+namespace loc_core {
+
+class LocAdapterBase;
+
+class ContextBase {
+    static LBSProxyBase* getLBSProxy(const char* libName);
+    LocApiBase* createLocApi(LOC_API_ADAPTER_EVENT_MASK_T excludedMask);
+    static const loc_param_s_type mGps_conf_table[];
+    static const loc_param_s_type mSap_conf_table[];
+protected:
+    const LBSProxyBase* mLBSProxy;
+    const MsgTask* mMsgTask;
+    LocApiBase* mLocApi;
+    LocApiProxyBase *mLocApiProxy;
+public:
+    ContextBase(const MsgTask* msgTask,
+                LOC_API_ADAPTER_EVENT_MASK_T exMask,
+                const char* libName);
+    inline virtual ~ContextBase() { delete mLocApi; delete mLBSProxy; }
+
+    inline const MsgTask* getMsgTask() { return mMsgTask; }
+    inline LocApiBase* getLocApi() { return mLocApi; }
+    inline LocApiProxyBase* getLocApiProxy() { return mLocApiProxy; }
+    inline bool hasAgpsExtendedCapabilities() { return mLBSProxy->hasAgpsExtendedCapabilities(); }
+    inline bool hasCPIExtendedCapabilities() { return mLBSProxy->hasCPIExtendedCapabilities(); }
+    inline bool hasNativeXtraClient() { return mLBSProxy->hasNativeXtraClient(); }
+    inline void modemPowerVote(bool power) const { return mLBSProxy->modemPowerVote(power); }
+    inline void requestUlp(LocAdapterBase* adapter,
+                           unsigned long capabilities) {
+        mLBSProxy->requestUlp(adapter, capabilities);
+    }
+    inline IzatDevId_t getIzatDevId() const {
+        return mLBSProxy->getIzatDevId();
+    }
+    inline void sendMsg(const LocMsg *msg) { getMsgTask()->sendMsg(msg); }
+
+    static loc_gps_cfg_s_type mGps_conf;
+    static loc_sap_cfg_s_type mSap_conf;
+
+    void readConfig();
+    static uint32_t getCarrierCapabilities();
+
+};
+
+} // namespace loc_core
+
+#endif //__LOC_CONTEXT_BASE__
diff --git a/sdm845/core/LBSProxyBase.h b/sdm845/core/LBSProxyBase.h
new file mode 100644
index 0000000..94ddd0f
--- /dev/null
+++ b/sdm845/core/LBSProxyBase.h
@@ -0,0 +1,80 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef IZAT_PROXY_BASE_H
+#define IZAT_PROXY_BASE_H
+#include <gps_extended.h>
+#include <MsgTask.h>
+
+namespace loc_core {
+
+class LocApiBase;
+class LocAdapterBase;
+class ContextBase;
+
+class LBSProxyBase {
+    friend class ContextBase;
+    inline virtual LocApiBase*
+        getLocApi(const MsgTask* msgTask,
+                  LOC_API_ADAPTER_EVENT_MASK_T exMask,
+                  ContextBase* context) const {
+
+        (void)msgTask;
+        (void)exMask;
+        (void)context;
+        return NULL;
+    }
+protected:
+    inline LBSProxyBase() {}
+public:
+    inline virtual ~LBSProxyBase() {}
+    inline virtual void requestUlp(LocAdapterBase* adapter,
+                                   unsigned long capabilities) const {
+
+        (void)adapter;
+        (void)capabilities;
+    }
+    inline virtual bool hasAgpsExtendedCapabilities() const { return false; }
+    inline virtual bool hasCPIExtendedCapabilities() const { return false; }
+    inline virtual void modemPowerVote(bool power) const {
+
+        (void)power;
+    }
+    virtual void injectFeatureConfig(ContextBase* context) const {
+
+        (void)context;
+    }
+    inline virtual bool hasNativeXtraClient() const { return false; }
+    inline virtual IzatDevId_t getIzatDevId() const { return 0; }
+};
+
+typedef LBSProxyBase* (getLBSProxy_t)();
+
+} // namespace loc_core
+
+#endif // IZAT_PROXY_BASE_H
diff --git a/sdm845/core/LocAdapterBase.cpp b/sdm845/core/LocAdapterBase.cpp
new file mode 100644
index 0000000..7cb4086
--- /dev/null
+++ b/sdm845/core/LocAdapterBase.cpp
@@ -0,0 +1,163 @@
+/* Copyright (c) 2011-2014, 2016-2017The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_LocAdapterBase"
+
+#include <dlfcn.h>
+#include <LocAdapterBase.h>
+#include <loc_target.h>
+#include <platform_lib_log_util.h>
+#include <LocAdapterProxyBase.h>
+
+namespace loc_core {
+
+// This is the top level class, so the constructor will
+// always gets called. Here we prepare for the default.
+// But if getLocApi(targetEnumType target) is overriden,
+// the right locApi should get created.
+LocAdapterBase::LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
+                               ContextBase* context, LocAdapterProxyBase *adapterProxyBase) :
+    mEvtMask(mask), mContext(context),
+    mLocApi(context->getLocApi()), mLocAdapterProxyBase(adapterProxyBase),
+    mMsgTask(context->getMsgTask())
+{
+    mLocApi->addAdapter(this);
+}
+
+uint32_t LocAdapterBase::mSessionIdCounter(1);
+
+uint32_t LocAdapterBase::generateSessionId()
+{
+    if (++mSessionIdCounter == 0xFFFFFFFF)
+        mSessionIdCounter = 1;
+
+     return mSessionIdCounter;
+}
+
+void LocAdapterBase::handleEngineUpEvent()
+{
+    if (mLocAdapterProxyBase) {
+        mLocAdapterProxyBase->handleEngineUpEvent();
+    }
+}
+
+void LocAdapterBase::handleEngineDownEvent()
+{
+    if (mLocAdapterProxyBase) {
+        mLocAdapterProxyBase->handleEngineDownEvent();
+    }
+}
+
+void LocAdapterBase::
+    reportPositionEvent(const UlpLocation& location,
+                        const GpsLocationExtended& locationExtended,
+                        enum loc_sess_status status,
+                        LocPosTechMask loc_technology_mask,
+                        bool fromUlp) {
+    if (mLocAdapterProxyBase != NULL) {
+        mLocAdapterProxyBase->reportPositionEvent((UlpLocation&)location,
+                                                   (GpsLocationExtended&)locationExtended,
+                                                   status,
+                                                   loc_technology_mask);
+    } else {
+        DEFAULT_IMPL()
+    }
+}
+
+void LocAdapterBase::
+    reportSvEvent(const GnssSvNotification& svNotify, bool fromUlp)
+DEFAULT_IMPL()
+
+void LocAdapterBase::
+    reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet)
+DEFAULT_IMPL()
+
+void LocAdapterBase::
+    reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial)
+DEFAULT_IMPL()
+
+void LocAdapterBase::
+    reportStatus(LocGpsStatusValue status)
+DEFAULT_IMPL()
+
+
+void LocAdapterBase::
+    reportNmeaEvent(const char* nmea, size_t length, bool fromUlp)
+DEFAULT_IMPL()
+
+bool LocAdapterBase::
+    reportXtraServer(const char* url1, const char* url2,
+                     const char* url3, const int maxlength)
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestXtraData()
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestTime()
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestLocation()
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestATL(int connHandle, LocAGpsType agps_type)
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    releaseATL(int connHandle)
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestSuplES(int connHandle)
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    reportDataCallOpened()
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    reportDataCallClosed()
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    requestNiNotifyEvent(const GnssNiNotification &notify, const void* data)
+DEFAULT_IMPL(false)
+
+void LocAdapterBase::
+    reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurementsNotify)
+DEFAULT_IMPL()
+
+bool LocAdapterBase::
+    reportWwanZppFix(LocGpsLocation &zppLoc)
+DEFAULT_IMPL(false)
+
+} // namespace loc_core
diff --git a/sdm845/core/LocAdapterBase.h b/sdm845/core/LocAdapterBase.h
new file mode 100644
index 0000000..5c471fd
--- /dev/null
+++ b/sdm845/core/LocAdapterBase.h
@@ -0,0 +1,159 @@
+/* Copyright (c) 2011-2014, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef LOC_API_ADAPTER_BASE_H
+#define LOC_API_ADAPTER_BASE_H
+
+#include <gps_extended.h>
+#include <UlpProxyBase.h>
+#include <ContextBase.h>
+#include <LocationAPI.h>
+#include <map>
+
+typedef struct LocationSessionKey {
+    LocationAPI* client;
+    uint32_t id;
+    inline LocationSessionKey(LocationAPI* _client, uint32_t _id) :
+        client(_client), id(_id) {}
+} LocationSessionKey;
+inline bool operator <(LocationSessionKey const& left, LocationSessionKey const& right) {
+    return left.id < right.id || (left.id == right.id && left.client < right.client);
+}
+inline bool operator ==(LocationSessionKey const& left, LocationSessionKey const& right) {
+    return left.id == right.id && left.client == right.client;
+}
+inline bool operator !=(LocationSessionKey const& left, LocationSessionKey const& right) {
+    return left.id != right.id || left.client != right.client;
+}
+typedef std::map<LocationSessionKey, LocationOptions> LocationSessionMap;
+
+namespace loc_core {
+
+class LocAdapterProxyBase;
+
+class LocAdapterBase {
+private:
+    static uint32_t mSessionIdCounter;
+protected:
+    LOC_API_ADAPTER_EVENT_MASK_T mEvtMask;
+    ContextBase* mContext;
+    LocApiBase* mLocApi;
+    LocAdapterProxyBase* mLocAdapterProxyBase;
+    const MsgTask* mMsgTask;
+    inline LocAdapterBase(const MsgTask* msgTask) :
+        mEvtMask(0), mContext(NULL), mLocApi(NULL),
+        mLocAdapterProxyBase(NULL), mMsgTask(msgTask) {}
+public:
+    inline virtual ~LocAdapterBase() { mLocApi->removeAdapter(this); }
+    LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
+                   ContextBase* context, LocAdapterProxyBase *adapterProxyBase = NULL);
+    inline LOC_API_ADAPTER_EVENT_MASK_T
+        checkMask(LOC_API_ADAPTER_EVENT_MASK_T mask) const {
+        return mEvtMask & mask;
+    }
+
+    inline LOC_API_ADAPTER_EVENT_MASK_T getEvtMask() const {
+        return mEvtMask;
+    }
+
+    inline void sendMsg(const LocMsg* msg) const {
+        mMsgTask->sendMsg(msg);
+    }
+
+    inline void sendMsg(const LocMsg* msg) {
+        mMsgTask->sendMsg(msg);
+    }
+
+    inline void updateEvtMask(LOC_API_ADAPTER_EVENT_MASK_T event,
+                              loc_registration_mask_status status)
+    {
+        switch(status) {
+            case (LOC_REGISTRATION_MASK_ENABLED):
+                mEvtMask = mEvtMask | event;
+                break;
+            case (LOC_REGISTRATION_MASK_DISABLED):
+                mEvtMask = mEvtMask &~ event;
+                break;
+            case (LOC_REGISTRATION_MASK_SET):
+                mEvtMask = event;
+                break;
+        }
+        mLocApi->updateEvtMask();
+    }
+
+    inline bool isFeatureSupported(uint8_t featureVal) {
+        return mLocApi->isFeatureSupported(featureVal);
+    }
+
+    uint32_t generateSessionId();
+
+    // This will be overridden by the individual adapters
+    // if necessary.
+    inline virtual void setUlpProxyCommand(UlpProxyBase* ulp) {
+
+        (void)ulp;
+    }
+    virtual void handleEngineUpEvent();
+    virtual void handleEngineDownEvent();
+    inline virtual void setPositionModeCommand(LocPosMode& posMode) {
+
+        (void)posMode;
+    }
+    virtual void startTrackingCommand() {}
+    virtual void stopTrackingCommand() {}
+    virtual void getZppCommand() {}
+    virtual void reportPositionEvent(const UlpLocation& location,
+                                     const GpsLocationExtended& locationExtended,
+                                     enum loc_sess_status status,
+                                     LocPosTechMask loc_technology_mask,
+                                     bool fromUlp=false);
+    virtual void reportSvEvent(const GnssSvNotification& svNotify, bool fromUlp=false);
+    virtual void reportNmeaEvent(const char* nmea, size_t length, bool fromUlp=false);
+    virtual void reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet);
+    virtual void reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial);
+    virtual void reportStatus(LocGpsStatusValue status);
+    virtual bool reportXtraServer(const char* url1, const char* url2,
+                                  const char* url3, const int maxlength);
+    virtual bool requestXtraData();
+    virtual bool requestTime();
+    virtual bool requestLocation();
+    virtual bool requestATL(int connHandle, LocAGpsType agps_type);
+    virtual bool releaseATL(int connHandle);
+    virtual bool requestSuplES(int connHandle);
+    virtual bool reportDataCallOpened();
+    virtual bool reportDataCallClosed();
+    virtual bool requestNiNotifyEvent(const GnssNiNotification &notify, const void* data);
+    inline virtual bool isInSession() { return false; }
+    ContextBase* getContext() const { return mContext; }
+    virtual void reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurementsNotify);
+    virtual bool reportWwanZppFix(LocGpsLocation &zppLoc);
+};
+
+} // namespace loc_core
+
+#endif //LOC_API_ADAPTER_BASE_H
diff --git a/sdm845/core/LocAdapterProxyBase.h b/sdm845/core/LocAdapterProxyBase.h
new file mode 100644
index 0000000..044f59b
--- /dev/null
+++ b/sdm845/core/LocAdapterProxyBase.h
@@ -0,0 +1,78 @@
+/* Copyright (c) 2014, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_ADAPTER_PROXY_BASE_H
+#define LOC_ADAPTER_PROXY_BASE_H
+
+#include <ContextBase.h>
+#include <gps_extended.h>
+
+namespace loc_core {
+
+class LocAdapterProxyBase {
+private:
+    LocAdapterBase *mLocAdapterBase;
+protected:
+    inline LocAdapterProxyBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
+                   ContextBase* context):
+                   mLocAdapterBase(new LocAdapterBase(mask, context, this)) {
+    }
+    inline virtual ~LocAdapterProxyBase() {
+        delete mLocAdapterBase;
+    }
+    inline void updateEvtMask(LOC_API_ADAPTER_EVENT_MASK_T event,
+                              loc_registration_mask_status isEnabled) {
+        mLocAdapterBase->updateEvtMask(event,isEnabled);
+    }
+
+    inline uint32_t generateSessionId() {
+        return mLocAdapterBase->generateSessionId();
+    }
+public:
+    inline ContextBase* getContext() const {
+        return mLocAdapterBase->getContext();
+    }
+
+    inline virtual void handleEngineUpEvent() {};
+    inline virtual void handleEngineDownEvent() {};
+    inline virtual void reportPositionEvent(UlpLocation &location,
+                                            GpsLocationExtended &locationExtended,
+                                            enum loc_sess_status status,
+                                            LocPosTechMask loc_technology_mask) {
+
+        (void)location;
+        (void)locationExtended;
+        (void)status;
+        (void)loc_technology_mask;
+    }
+};
+
+} // namespace loc_core
+
+#endif //LOC_ADAPTER_PROXY_BASE_H
diff --git a/sdm845/core/LocApiBase.cpp b/sdm845/core/LocApiBase.cpp
new file mode 100644
index 0000000..0036d88
--- /dev/null
+++ b/sdm845/core/LocApiBase.cpp
@@ -0,0 +1,602 @@
+/* Copyright (c) 2011-2014, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDEBUG 0 //Define to enable LOGV
+#define LOG_TAG "LocSvc_LocApiBase"
+
+#include <dlfcn.h>
+#include <LocApiBase.h>
+#include <LocAdapterBase.h>
+#include <platform_lib_log_util.h>
+#include <LocDualContext.h>
+
+namespace loc_core {
+
+#define TO_ALL_LOCADAPTERS(call) TO_ALL_ADAPTERS(mLocAdapters, (call))
+#define TO_1ST_HANDLING_LOCADAPTERS(call) TO_1ST_HANDLING_ADAPTER(mLocAdapters, (call))
+
+int hexcode(char *hexstring, int string_size,
+            const char *data, int data_size)
+{
+   int i;
+   for (i = 0; i < data_size; i++)
+   {
+      char ch = data[i];
+      if (i*2 + 3 <= string_size)
+      {
+         snprintf(&hexstring[i*2], 3, "%02X", ch);
+      }
+      else {
+         break;
+      }
+   }
+   return i;
+}
+
+int decodeAddress(char *addr_string, int string_size,
+                   const char *data, int data_size)
+{
+    const char addr_prefix = 0x91;
+    int i, idxOutput = 0;
+
+    if (!data || !addr_string) { return 0; }
+
+    if (data[0] != addr_prefix)
+    {
+        LOC_LOGW("decodeAddress: address prefix is not 0x%x but 0x%x", addr_prefix, data[0]);
+        addr_string[0] = '\0';
+        return 0; // prefix not correct
+    }
+
+    for (i = 1; i < data_size; i++)
+    {
+        unsigned char ch = data[i], low = ch & 0x0F, hi = ch >> 4;
+        if (low <= 9 && idxOutput < string_size - 1) { addr_string[idxOutput++] = low + '0'; }
+        if (hi <= 9 && idxOutput < string_size - 1) { addr_string[idxOutput++] = hi + '0'; }
+    }
+
+    addr_string[idxOutput] = '\0'; // Terminates the string
+
+    return idxOutput;
+}
+
+struct LocSsrMsg : public LocMsg {
+    LocApiBase* mLocApi;
+    inline LocSsrMsg(LocApiBase* locApi) :
+        LocMsg(), mLocApi(locApi)
+    {
+        locallog();
+    }
+    inline virtual void proc() const {
+        mLocApi->close();
+        mLocApi->open(mLocApi->getEvtMask());
+    }
+    inline void locallog() {
+        LOC_LOGV("LocSsrMsg");
+    }
+    inline virtual void log() {
+        locallog();
+    }
+};
+
+struct LocOpenMsg : public LocMsg {
+    LocApiBase* mLocApi;
+    LOC_API_ADAPTER_EVENT_MASK_T mMask;
+    inline LocOpenMsg(LocApiBase* locApi,
+                      LOC_API_ADAPTER_EVENT_MASK_T mask) :
+        LocMsg(), mLocApi(locApi), mMask(mask)
+    {
+        locallog();
+    }
+    inline virtual void proc() const {
+        mLocApi->open(mMask);
+    }
+    inline void locallog() {
+        LOC_LOGV("%s:%d]: LocOpen Mask: %x\n",
+                 __func__, __LINE__, mMask);
+    }
+    inline virtual void log() {
+        locallog();
+    }
+};
+
+LocApiBase::LocApiBase(const MsgTask* msgTask,
+                       LOC_API_ADAPTER_EVENT_MASK_T excludedMask,
+                       ContextBase* context) :
+    mExcludedMask(excludedMask), mMsgTask(msgTask),
+    mMask(0), mSupportedMsg(0), mContext(context)
+{
+    memset(mLocAdapters, 0, sizeof(mLocAdapters));
+    memset(mFeaturesSupported, 0, sizeof(mFeaturesSupported));
+}
+
+LOC_API_ADAPTER_EVENT_MASK_T LocApiBase::getEvtMask()
+{
+    LOC_API_ADAPTER_EVENT_MASK_T mask = 0;
+
+    TO_ALL_LOCADAPTERS(mask |= mLocAdapters[i]->getEvtMask());
+
+    return mask & ~mExcludedMask;
+}
+
+bool LocApiBase::isInSession()
+{
+    bool inSession = false;
+
+    for (int i = 0;
+         !inSession && i < MAX_ADAPTERS && NULL != mLocAdapters[i];
+         i++) {
+        inSession = mLocAdapters[i]->isInSession();
+    }
+
+    return inSession;
+}
+
+void LocApiBase::addAdapter(LocAdapterBase* adapter)
+{
+    for (int i = 0; i < MAX_ADAPTERS && mLocAdapters[i] != adapter; i++) {
+        if (mLocAdapters[i] == NULL) {
+            mLocAdapters[i] = adapter;
+            mMsgTask->sendMsg(new LocOpenMsg(this,
+                                             (adapter->getEvtMask())));
+            break;
+        }
+    }
+}
+
+void LocApiBase::removeAdapter(LocAdapterBase* adapter)
+{
+    for (int i = 0;
+         i < MAX_ADAPTERS && NULL != mLocAdapters[i];
+         i++) {
+        if (mLocAdapters[i] == adapter) {
+            mLocAdapters[i] = NULL;
+
+            // shift the rest of the adapters up so that the pointers
+            // in the array do not have holes.  This should be more
+            // performant, because the array maintenance is much much
+            // less frequent than event handlings, which need to linear
+            // search all the adapters
+            int j = i;
+            while (++i < MAX_ADAPTERS && mLocAdapters[i] != NULL);
+
+            // i would be MAX_ADAPTERS or point to a NULL
+            i--;
+            // i now should point to a none NULL adapter within valid
+            // range although i could be equal to j, but it won't hurt.
+            // No need to check it, as it gains nothing.
+            mLocAdapters[j] = mLocAdapters[i];
+            // this makes sure that we exit the for loop
+            mLocAdapters[i] = NULL;
+
+            // if we have an empty list of adapters
+            if (0 == i) {
+                close();
+            } else {
+                // else we need to remove the bit
+                mMsgTask->sendMsg(new LocOpenMsg(this, getEvtMask()));
+            }
+        }
+    }
+}
+
+void LocApiBase::updateEvtMask()
+{
+    mMsgTask->sendMsg(new LocOpenMsg(this, getEvtMask()));
+}
+
+void LocApiBase::handleEngineUpEvent()
+{
+    // This will take care of renegotiating the loc handle
+    mMsgTask->sendMsg(new LocSsrMsg(this));
+
+    LocDualContext::injectFeatureConfig(mContext);
+
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->handleEngineUpEvent());
+}
+
+void LocApiBase::handleEngineDownEvent()
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->handleEngineDownEvent());
+}
+
+void LocApiBase::reportPosition(UlpLocation& location,
+                                GpsLocationExtended& locationExtended,
+                                enum loc_sess_status status,
+                                LocPosTechMask loc_technology_mask)
+{
+    // print the location info before delivering
+    LOC_LOGD("flags: %d\n  source: %d\n  latitude: %f\n  longitude: %f\n  "
+             "altitude: %f\n  speed: %f\n  bearing: %f\n  accuracy: %f\n  "
+             "timestamp: %lld\n  rawDataSize: %d\n  rawData: %p\n  "
+             "Session status: %d\n Technology mask: %u\n "
+             "SV used in fix (gps/glo/bds/gal) : (%x/%x/%x/%x)",
+             location.gpsLocation.flags, location.position_source,
+             location.gpsLocation.latitude, location.gpsLocation.longitude,
+             location.gpsLocation.altitude, location.gpsLocation.speed,
+             location.gpsLocation.bearing, location.gpsLocation.accuracy,
+             location.gpsLocation.timestamp, location.rawDataSize,
+             location.rawData, status, loc_technology_mask,
+             locationExtended.gnss_sv_used_ids.gps_sv_used_ids_mask,
+             locationExtended.gnss_sv_used_ids.glo_sv_used_ids_mask,
+             locationExtended.gnss_sv_used_ids.bds_sv_used_ids_mask,
+             locationExtended.gnss_sv_used_ids.gal_sv_used_ids_mask);
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(
+        mLocAdapters[i]->reportPositionEvent(location, locationExtended,
+                                             status, loc_technology_mask)
+    );
+}
+
+void LocApiBase::reportWwanZppFix(LocGpsLocation &zppLoc)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportWwanZppFix(zppLoc));
+}
+
+void LocApiBase::reportSv(GnssSvNotification& svNotify)
+{
+    const char* constellationString[] = { "Unknown", "GPS", "SBAS", "GLONASS",
+        "QZSS", "BEIDOU", "GALILEO" };
+
+    // print the SV info before delivering
+    LOC_LOGV("num sv: %d\n"
+        "      sv: constellation svid         cN0"
+        "    elevation    azimuth    flags",
+        svNotify.count);
+    for (int i = 0; i < svNotify.count && i < LOC_GNSS_MAX_SVS; i++) {
+        if (svNotify.gnssSvs[i].type >
+            sizeof(constellationString) / sizeof(constellationString[0]) - 1) {
+            svNotify.gnssSvs[i].type = GNSS_SV_TYPE_UNKNOWN;
+        }
+        LOC_LOGV("   %03d: %*s  %02d    %f    %f    %f   0x%02X",
+            i,
+            13,
+            constellationString[svNotify.gnssSvs[i].type],
+            svNotify.gnssSvs[i].svId,
+            svNotify.gnssSvs[i].cN0Dbhz,
+            svNotify.gnssSvs[i].elevation,
+            svNotify.gnssSvs[i].azimuth,
+            svNotify.gnssSvs[i].gnssSvOptionsMask);
+    }
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(
+        mLocAdapters[i]->reportSvEvent(svNotify)
+        );
+}
+
+void LocApiBase::reportSvMeasurement(GnssSvMeasurementSet &svMeasurementSet)
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(
+        mLocAdapters[i]->reportSvMeasurementEvent(svMeasurementSet)
+    );
+}
+
+void LocApiBase::reportSvPolynomial(GnssSvPolynomial &svPolynomial)
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(
+        mLocAdapters[i]->reportSvPolynomialEvent(svPolynomial)
+    );
+}
+
+void LocApiBase::reportStatus(LocGpsStatusValue status)
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportStatus(status));
+}
+
+void LocApiBase::reportNmea(const char* nmea, int length)
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportNmeaEvent(nmea, length));
+}
+
+void LocApiBase::reportXtraServer(const char* url1, const char* url2,
+                                  const char* url3, const int maxlength)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportXtraServer(url1, url2, url3, maxlength));
+
+}
+
+void LocApiBase::requestXtraData()
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestXtraData());
+}
+
+void LocApiBase::requestTime()
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestTime());
+}
+
+void LocApiBase::requestLocation()
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestLocation());
+}
+
+void LocApiBase::requestATL(int connHandle, LocAGpsType agps_type)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestATL(connHandle, agps_type));
+}
+
+void LocApiBase::releaseATL(int connHandle)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->releaseATL(connHandle));
+}
+
+void LocApiBase::requestSuplES(int connHandle)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestSuplES(connHandle));
+}
+
+void LocApiBase::reportDataCallOpened()
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportDataCallOpened());
+}
+
+void LocApiBase::reportDataCallClosed()
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportDataCallClosed());
+}
+
+void LocApiBase::requestNiNotify(GnssNiNotification &notify, const void* data)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->requestNiNotifyEvent(notify, data));
+}
+
+void LocApiBase::saveSupportedMsgList(uint64_t supportedMsgList)
+{
+    mSupportedMsg = supportedMsgList;
+}
+
+void LocApiBase::saveSupportedFeatureList(uint8_t *featureList)
+{
+    memcpy((void *)mFeaturesSupported, (void *)featureList, sizeof(mFeaturesSupported));
+}
+
+void* LocApiBase :: getSibling()
+    DEFAULT_IMPL(NULL)
+
+LocApiProxyBase* LocApiBase :: getLocApiProxy()
+    DEFAULT_IMPL(NULL)
+
+void LocApiBase::reportGnssMeasurementData(GnssMeasurementsNotification& measurementsNotify)
+{
+    // loop through adapters, and deliver to all adapters.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportGnssMeasurementDataEvent(measurementsNotify));
+}
+
+enum loc_api_adapter_err LocApiBase::
+   open(LOC_API_ADAPTER_EVENT_MASK_T mask)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    close()
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    startFix(const LocPosMode& posMode)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    stopFix()
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+LocationError LocApiBase::
+    deleteAidingData(const GnssAidingData& data)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    enableData(int enable)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setAPN(char* apn, int len)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    injectPosition(double latitude, double longitude, float accuracy)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setTime(LocGpsUtcTime time, int64_t timeReference, int uncertainty)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setXtraData(char* data, int length)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    requestXtraServer()
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+   atlOpenStatus(int handle, int is_succ, char* apn,
+                 AGpsBearerType bear, LocAGpsType agpsType)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    atlCloseStatus(int handle, int is_succ)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setPositionMode(const LocPosMode& posMode)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+LocationError LocApiBase::
+    setServer(const char* url, int len)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+LocationError LocApiBase::
+    setServer(unsigned int ip, int port, LocServerType type)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+LocationError LocApiBase::
+    informNiResponse(GnssNiResponse userResponse, const void* passThroughData)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+LocationError LocApiBase::
+    setSUPLVersion(GnssConfigSuplVersion version)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setNMEATypes (uint32_t typesMask)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+LocationError LocApiBase::
+    setLPPConfig(GnssConfigLppProfile profile)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setSensorControlConfig(int sensorUsage,
+                           int sensorProvider)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setSensorProperties(bool gyroBiasVarianceRandomWalk_valid,
+                        float gyroBiasVarianceRandomWalk,
+                        bool accelBiasVarianceRandomWalk_valid,
+                        float accelBiasVarianceRandomWalk,
+                        bool angleBiasVarianceRandomWalk_valid,
+                        float angleBiasVarianceRandomWalk,
+                        bool rateBiasVarianceRandomWalk_valid,
+                        float rateBiasVarianceRandomWalk,
+                        bool velocityBiasVarianceRandomWalk_valid,
+                        float velocityBiasVarianceRandomWalk)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+    setSensorPerfControlConfig(int controlMode,
+                               int accelSamplesPerBatch,
+                               int accelBatchesPerSec,
+                               int gyroSamplesPerBatch,
+                               int gyroBatchesPerSec,
+                               int accelSamplesPerBatchHigh,
+                               int accelBatchesPerSecHigh,
+                               int gyroSamplesPerBatchHigh,
+                               int gyroBatchesPerSecHigh,
+                               int algorithmConfig)
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+LocationError LocApiBase::
+    setAGLONASSProtocol(GnssConfigAGlonassPositionProtocolMask aGlonassProtocol)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+LocationError LocApiBase::
+    setLPPeProtocolCp(GnssConfigLppeControlPlaneMask lppeCP)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+LocationError LocApiBase::
+    setLPPeProtocolUp(GnssConfigLppeUserPlaneMask lppeUP)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+   getWwanZppFix()
+DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+
+enum loc_api_adapter_err LocApiBase::
+   getBestAvailableZppFix(LocGpsLocation& zppLoc)
+{
+   memset(&zppLoc, 0, sizeof(zppLoc));
+   DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+}
+
+enum loc_api_adapter_err LocApiBase::
+   getBestAvailableZppFix(LocGpsLocation & zppLoc, LocPosTechMask & tech_mask)
+{
+   memset(&zppLoc, 0, sizeof(zppLoc));
+   memset(&tech_mask, 0, sizeof(tech_mask));
+   DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
+}
+
+int LocApiBase::
+    initDataServiceClient(bool isDueToSsr)
+DEFAULT_IMPL(-1)
+
+int LocApiBase::
+    openAndStartDataCall()
+DEFAULT_IMPL(-1)
+
+void LocApiBase::
+    stopDataCall()
+DEFAULT_IMPL()
+
+void LocApiBase::
+    closeDataCall()
+DEFAULT_IMPL()
+
+void LocApiBase::
+    releaseDataServiceClient()
+DEFAULT_IMPL()
+
+LocationError LocApiBase::
+    setGpsLock(GnssConfigGpsLock lock)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::
+    installAGpsCert(const LocDerEncodedCertificate* pData,
+                    size_t length,
+                    uint32_t slotBitMask)
+DEFAULT_IMPL()
+
+int LocApiBase::
+    getGpsLock()
+DEFAULT_IMPL(-1)
+
+LocationError LocApiBase::
+    setXtraVersionCheck(uint32_t check)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+bool LocApiBase::
+    gnssConstellationConfig()
+DEFAULT_IMPL(false)
+
+bool LocApiBase::
+    isFeatureSupported(uint8_t featureVal)
+{
+    uint8_t arrayIndex = featureVal >> 3;
+    uint8_t bitPos = featureVal & 7;
+
+    if (arrayIndex >= MAX_FEATURE_LENGTH) return false;
+    return ((mFeaturesSupported[arrayIndex] >> bitPos ) & 0x1);
+}
+
+} // namespace loc_core
diff --git a/sdm845/core/LocApiBase.h b/sdm845/core/LocApiBase.h
new file mode 100644
index 0000000..86610e7
--- /dev/null
+++ b/sdm845/core/LocApiBase.h
@@ -0,0 +1,265 @@
+/* Copyright (c) 2011-2014, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef LOC_API_BASE_H
+#define LOC_API_BASE_H
+
+#include <stddef.h>
+#include <ctype.h>
+#include <gps_extended.h>
+#include <LocationAPI.h>
+#include <MsgTask.h>
+#include <platform_lib_log_util.h>
+
+namespace loc_core {
+class ContextBase;
+
+int hexcode(char *hexstring, int string_size,
+            const char *data, int data_size);
+int decodeAddress(char *addr_string, int string_size,
+                  const char *data, int data_size);
+
+#define MAX_ADAPTERS          10
+#define MAX_FEATURE_LENGTH    100
+
+#define TO_ALL_ADAPTERS(adapters, call)                                \
+    for (int i = 0; i < MAX_ADAPTERS && NULL != (adapters)[i]; i++) {  \
+        call;                                                          \
+    }
+
+#define TO_1ST_HANDLING_ADAPTER(adapters, call)                              \
+    for (int i = 0; i <MAX_ADAPTERS && NULL != (adapters)[i] && !(call); i++);
+
+enum xtra_version_check {
+    DISABLED,
+    AUTO,
+    XTRA2,
+    XTRA3
+};
+
+class LocAdapterBase;
+struct LocSsrMsg;
+struct LocOpenMsg;
+
+class LocApiProxyBase {
+public:
+    inline LocApiProxyBase() {}
+    inline virtual ~LocApiProxyBase() {}
+    inline virtual void* getSibling2() { return NULL; }
+};
+
+class LocApiBase {
+    friend struct LocSsrMsg;
+    //LocOpenMsg calls open() which makes it necessary to declare
+    //it as a friend
+    friend struct LocOpenMsg;
+    friend class ContextBase;
+    const MsgTask* mMsgTask;
+    ContextBase *mContext;
+    LocAdapterBase* mLocAdapters[MAX_ADAPTERS];
+    uint64_t mSupportedMsg;
+    uint8_t mFeaturesSupported[MAX_FEATURE_LENGTH];
+
+protected:
+    virtual enum loc_api_adapter_err
+        open(LOC_API_ADAPTER_EVENT_MASK_T mask);
+    virtual enum loc_api_adapter_err
+        close();
+    LOC_API_ADAPTER_EVENT_MASK_T getEvtMask();
+    LOC_API_ADAPTER_EVENT_MASK_T mMask;
+    LocApiBase(const MsgTask* msgTask,
+               LOC_API_ADAPTER_EVENT_MASK_T excludedMask,
+               ContextBase* context = NULL);
+    inline virtual ~LocApiBase() { close(); }
+    bool isInSession();
+    const LOC_API_ADAPTER_EVENT_MASK_T mExcludedMask;
+
+public:
+    inline void sendMsg(const LocMsg* msg) const {
+        mMsgTask->sendMsg(msg);
+    }
+    void addAdapter(LocAdapterBase* adapter);
+    void removeAdapter(LocAdapterBase* adapter);
+
+    // upward calls
+    void handleEngineUpEvent();
+    void handleEngineDownEvent();
+    void reportPosition(UlpLocation& location,
+                        GpsLocationExtended& locationExtended,
+                        enum loc_sess_status status,
+                        LocPosTechMask loc_technology_mask =
+                                  LOC_POS_TECH_MASK_DEFAULT);
+    void reportSv(GnssSvNotification& svNotify);
+    void reportSvMeasurement(GnssSvMeasurementSet &svMeasurementSet);
+    void reportSvPolynomial(GnssSvPolynomial &svPolynomial);
+    void reportStatus(LocGpsStatusValue status);
+    void reportNmea(const char* nmea, int length);
+    void reportXtraServer(const char* url1, const char* url2,
+                          const char* url3, const int maxlength);
+    void requestXtraData();
+    void requestTime();
+    void requestLocation();
+    void requestATL(int connHandle, LocAGpsType agps_type);
+    void releaseATL(int connHandle);
+    void requestSuplES(int connHandle);
+    void reportDataCallOpened();
+    void reportDataCallClosed();
+    void requestNiNotify(GnssNiNotification &notify, const void* data);
+    void saveSupportedMsgList(uint64_t supportedMsgList);
+    void reportGnssMeasurementData(GnssMeasurementsNotification& measurementsNotify);
+    void saveSupportedFeatureList(uint8_t *featureList);
+    void reportWwanZppFix(LocGpsLocation &zppLoc);
+
+    // downward calls
+    // All below functions are to be defined by adapter specific modules:
+    // RPC, QMI, etc.  The default implementation is empty.
+
+    virtual void* getSibling();
+    virtual LocApiProxyBase* getLocApiProxy();
+    virtual enum loc_api_adapter_err
+        startFix(const LocPosMode& posMode);
+    virtual enum loc_api_adapter_err
+        stopFix();
+    virtual LocationError
+        deleteAidingData(const GnssAidingData& data);
+    virtual enum loc_api_adapter_err
+        enableData(int enable);
+    virtual enum loc_api_adapter_err
+        setAPN(char* apn, int len);
+    virtual enum loc_api_adapter_err
+        injectPosition(double latitude, double longitude, float accuracy);
+    virtual enum loc_api_adapter_err
+        setTime(LocGpsUtcTime time, int64_t timeReference, int uncertainty);
+    virtual enum loc_api_adapter_err
+        setXtraData(char* data, int length);
+    virtual enum loc_api_adapter_err
+        requestXtraServer();
+    virtual enum loc_api_adapter_err
+        atlOpenStatus(int handle, int is_succ, char* apn, AGpsBearerType bear, LocAGpsType agpsType);
+    virtual enum loc_api_adapter_err
+        atlCloseStatus(int handle, int is_succ);
+    virtual enum loc_api_adapter_err
+        setPositionMode(const LocPosMode& posMode);
+    virtual LocationError
+        setServer(const char* url, int len);
+    virtual LocationError
+        setServer(unsigned int ip, int port,
+                  LocServerType type);
+    virtual LocationError
+        informNiResponse(GnssNiResponse userResponse, const void* passThroughData);
+    virtual LocationError setSUPLVersion(GnssConfigSuplVersion version);
+    virtual enum loc_api_adapter_err
+        setNMEATypes (uint32_t typesMask);
+    virtual LocationError setLPPConfig(GnssConfigLppProfile profile);
+    virtual enum loc_api_adapter_err
+        setSensorControlConfig(int sensorUsage, int sensorProvider);
+    virtual enum loc_api_adapter_err
+        setSensorProperties(bool gyroBiasVarianceRandomWalk_valid,
+                            float gyroBiasVarianceRandomWalk,
+                            bool accelBiasVarianceRandomWalk_valid,
+                            float accelBiasVarianceRandomWalk,
+                            bool angleBiasVarianceRandomWalk_valid,
+                            float angleBiasVarianceRandomWalk,
+                            bool rateBiasVarianceRandomWalk_valid,
+                            float rateBiasVarianceRandomWalk,
+                            bool velocityBiasVarianceRandomWalk_valid,
+                            float velocityBiasVarianceRandomWalk);
+    virtual enum loc_api_adapter_err
+        setSensorPerfControlConfig(int controlMode,
+                               int accelSamplesPerBatch,
+                               int accelBatchesPerSec,
+                               int gyroSamplesPerBatch,
+                               int gyroBatchesPerSec,
+                               int accelSamplesPerBatchHigh,
+                               int accelBatchesPerSecHigh,
+                               int gyroSamplesPerBatchHigh,
+                               int gyroBatchesPerSecHigh,
+                               int algorithmConfig);
+    virtual LocationError
+        setAGLONASSProtocol(GnssConfigAGlonassPositionProtocolMask aGlonassProtocol);
+    virtual LocationError setLPPeProtocolCp(GnssConfigLppeControlPlaneMask lppeCP);
+    virtual LocationError setLPPeProtocolUp(GnssConfigLppeUserPlaneMask lppeUP);
+    virtual enum loc_api_adapter_err
+        getWwanZppFix();
+    virtual enum loc_api_adapter_err
+        getBestAvailableZppFix(LocGpsLocation & zppLoc);
+    virtual enum loc_api_adapter_err
+        getBestAvailableZppFix(LocGpsLocation & zppLoc, LocPosTechMask & tech_mask);
+    virtual int initDataServiceClient(bool isDueToSsr);
+    virtual int openAndStartDataCall();
+    virtual void stopDataCall();
+    virtual void closeDataCall();
+    virtual void releaseDataServiceClient();
+    virtual void installAGpsCert(const LocDerEncodedCertificate* pData,
+                                 size_t length,
+                                 uint32_t slotBitMask);
+    inline virtual void setInSession(bool inSession) {
+
+        (void)inSession;
+    }
+    inline bool isMessageSupported (LocCheckingMessagesID msgID) const {
+
+        // confirm if msgID is not larger than the number of bits in
+        // mSupportedMsg
+        if ((uint64_t)msgID > (sizeof(mSupportedMsg) << 3)) {
+            return false;
+        } else {
+            uint32_t messageChecker = 1 << msgID;
+            return (messageChecker & mSupportedMsg) == messageChecker;
+        }
+    }
+
+    void updateEvtMask();
+
+    virtual LocationError setGpsLock(GnssConfigGpsLock lock);
+    /*
+      Returns
+      Current value of GPS Lock on success
+      -1 on failure
+     */
+    virtual int getGpsLock(void);
+
+    virtual LocationError setXtraVersionCheck(uint32_t check);
+    /*
+      Check if the modem support the service
+     */
+    virtual bool gnssConstellationConfig();
+
+    /*
+       Check if a feature is supported
+      */
+    bool isFeatureSupported(uint8_t featureVal);
+};
+
+typedef LocApiBase* (getLocApi_t)(const MsgTask* msgTask,
+                                  LOC_API_ADAPTER_EVENT_MASK_T exMask,
+                                  ContextBase *context);
+
+} // namespace loc_core
+
+#endif //LOC_API_BASE_H
diff --git a/sdm845/core/LocDualContext.cpp b/sdm845/core/LocDualContext.cpp
new file mode 100644
index 0000000..90eacff
--- /dev/null
+++ b/sdm845/core/LocDualContext.cpp
@@ -0,0 +1,162 @@
+/* Copyright (c) 2011-2014, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_DualCtx"
+
+#include <cutils/sched_policy.h>
+#include <unistd.h>
+#include <LocDualContext.h>
+#include <msg_q.h>
+#include <platform_lib_log_util.h>
+#include <loc_log.h>
+#include <SystemStatus.h>
+
+namespace loc_core {
+
+// nothing exclude for foreground
+const LOC_API_ADAPTER_EVENT_MASK_T
+LocDualContext::mFgExclMask = 0;
+// excluded events for background clients
+const LOC_API_ADAPTER_EVENT_MASK_T
+LocDualContext::mBgExclMask =
+    (LOC_API_ADAPTER_BIT_SATELLITE_REPORT |
+     LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT |
+     LOC_API_ADAPTER_BIT_NMEA_POSITION_REPORT |
+     LOC_API_ADAPTER_BIT_IOCTL_REPORT |
+     LOC_API_ADAPTER_BIT_STATUS_REPORT |
+     LOC_API_ADAPTER_BIT_GEOFENCE_GEN_ALERT |
+     LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT);
+
+const MsgTask* LocDualContext::mMsgTask = NULL;
+ContextBase* LocDualContext::mFgContext = NULL;
+ContextBase* LocDualContext::mBgContext = NULL;
+ContextBase* LocDualContext::mInjectContext = NULL;
+SystemStatus* LocDualContext::mSystemStatus = NULL;
+// the name must be shorter than 15 chars
+const char* LocDualContext::mLocationHalName = "Loc_hal_worker";
+#ifndef USE_GLIB
+const char* LocDualContext::mLBSLibName = "liblbs_core.so";
+#else
+const char* LocDualContext::mLBSLibName = "liblbs_core.so.1";
+#endif
+
+pthread_mutex_t LocDualContext::mGetLocContextMutex = PTHREAD_MUTEX_INITIALIZER;
+
+const MsgTask* LocDualContext::getMsgTask(LocThread::tCreate tCreator,
+                                          const char* name, bool joinable)
+{
+    if (NULL == mMsgTask) {
+        mMsgTask = new MsgTask(tCreator, name, joinable);
+    }
+    return mMsgTask;
+}
+
+inline
+const MsgTask* LocDualContext::getMsgTask(const char* name, bool joinable) {
+    return getMsgTask((LocThread::tCreate)NULL, name, joinable);
+}
+
+ContextBase* LocDualContext::getLocFgContext(LocThread::tCreate tCreator,
+            LocMsg* firstMsg, const char* name, bool joinable)
+{
+    pthread_mutex_lock(&LocDualContext::mGetLocContextMutex);
+    LOC_LOGD("%s:%d]: querying ContextBase with tCreator", __func__, __LINE__);
+    if (NULL == mFgContext) {
+        LOC_LOGD("%s:%d]: creating msgTask with tCreator", __func__, __LINE__);
+        const MsgTask* msgTask = getMsgTask(tCreator, name, joinable);
+        mFgContext = new LocDualContext(msgTask,
+                                        mFgExclMask);
+    }
+    if(NULL == mInjectContext) {
+        LOC_LOGD("%s:%d]: mInjectContext is FgContext", __func__, __LINE__);
+        mInjectContext = mFgContext;
+        injectFeatureConfig(mInjectContext);
+    }
+    pthread_mutex_unlock(&LocDualContext::mGetLocContextMutex);
+
+    if (firstMsg) {
+        mFgContext->sendMsg(firstMsg);
+    }
+
+    return mFgContext;
+}
+
+ContextBase* LocDualContext::getLocBgContext(LocThread::tCreate tCreator,
+            LocMsg* firstMsg, const char* name, bool joinable)
+{
+    pthread_mutex_lock(&LocDualContext::mGetLocContextMutex);
+    LOC_LOGD("%s:%d]: querying ContextBase with tCreator", __func__, __LINE__);
+    if (NULL == mBgContext) {
+        LOC_LOGD("%s:%d]: creating msgTask with tCreator", __func__, __LINE__);
+        const MsgTask* msgTask = getMsgTask(tCreator, name, joinable);
+        mBgContext = new LocDualContext(msgTask,
+                                        mBgExclMask);
+    }
+    if(NULL == mInjectContext) {
+        LOC_LOGD("%s:%d]: mInjectContext is BgContext", __func__, __LINE__);
+        mInjectContext = mBgContext;
+        injectFeatureConfig(mInjectContext);
+    }
+    pthread_mutex_unlock(&LocDualContext::mGetLocContextMutex);
+
+    if (firstMsg) {
+        mBgContext->sendMsg(firstMsg);
+    }
+
+    return mBgContext;
+}
+
+void LocDualContext :: injectFeatureConfig(ContextBase *curContext)
+{
+    LOC_LOGD("%s:%d]: Enter", __func__, __LINE__);
+    if(curContext == mInjectContext) {
+        LOC_LOGD("%s:%d]: Calling LBSProxy (%p) to inject feature config",
+                 __func__, __LINE__, ((LocDualContext *)mInjectContext)->mLBSProxy);
+        ((LocDualContext *)mInjectContext)->mLBSProxy->injectFeatureConfig(curContext);
+    }
+    LOC_LOGD("%s:%d]: Exit", __func__, __LINE__);
+}
+
+LocDualContext::LocDualContext(const MsgTask* msgTask,
+                               LOC_API_ADAPTER_EVENT_MASK_T exMask) :
+    ContextBase(msgTask, exMask, mLBSLibName)
+{
+}
+
+SystemStatus* LocDualContext::getSystemStatus(void)
+{
+    pthread_mutex_lock(&LocDualContext::mGetLocContextMutex);
+    if (NULL == mSystemStatus) {
+        mSystemStatus = new SystemStatus();
+    }
+    pthread_mutex_unlock(&LocDualContext::mGetLocContextMutex);
+    return  mSystemStatus;
+}
+
+}
diff --git a/sdm845/core/LocDualContext.h b/sdm845/core/LocDualContext.h
new file mode 100644
index 0000000..7642152
--- /dev/null
+++ b/sdm845/core/LocDualContext.h
@@ -0,0 +1,80 @@
+/* Copyright (c) 2011-2014, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_ENG_CONTEXT__
+#define __LOC_ENG_CONTEXT__
+
+#include <stdbool.h>
+#include <ctype.h>
+#include <dlfcn.h>
+#include <ContextBase.h>
+
+namespace loc_core {
+
+class SystemStatus;
+
+class LocDualContext : public ContextBase {
+    static const MsgTask* mMsgTask;
+    static ContextBase* mFgContext;
+    static ContextBase* mBgContext;
+    static ContextBase* mInjectContext;
+    static const MsgTask* getMsgTask(LocThread::tCreate tCreator,
+                                     const char* name, bool joinable = true);
+    static const MsgTask* getMsgTask(const char* name, bool joinable = true);
+    static pthread_mutex_t mGetLocContextMutex;
+    static SystemStatus* mSystemStatus;
+
+protected:
+    LocDualContext(const MsgTask* msgTask,
+                   LOC_API_ADAPTER_EVENT_MASK_T exMask);
+    inline virtual ~LocDualContext() {}
+
+public:
+    static const char* mLBSLibName;
+    static const LOC_API_ADAPTER_EVENT_MASK_T mFgExclMask;
+    static const LOC_API_ADAPTER_EVENT_MASK_T mBgExclMask;
+    static const char* mLocationHalName;
+
+    static ContextBase* getLocFgContext(LocThread::tCreate tCreator, LocMsg* firstMsg,
+                                        const char* name, bool joinable = true);
+    inline static ContextBase* getLocFgContext(const char* name, bool joinable = true) {
+        return getLocFgContext(NULL, NULL, name, joinable);
+    }
+    static ContextBase* getLocBgContext(LocThread::tCreate tCreator, LocMsg* firstMsg,
+                                        const char* name, bool joinable = true);
+    inline static ContextBase* getLocBgContext(const char* name, bool joinable = true) {
+        return getLocBgContext(NULL, NULL, name, joinable);
+    }
+
+    static void injectFeatureConfig(ContextBase *context);
+    static SystemStatus* getSystemStatus(void);
+};
+
+}
+
+#endif //__LOC_ENG_CONTEXT__
diff --git a/sdm845/core/Makefile.am b/sdm845/core/Makefile.am
new file mode 100644
index 0000000..61abac4
--- /dev/null
+++ b/sdm845/core/Makefile.am
@@ -0,0 +1,47 @@
+AM_CFLAGS = -I./ \
+            -I../utils \
+            $(LOCPLA_CFLAGS) \
+            $(GPSUTILS_CFLAGS) \
+            -I$(WORKSPACE)/gps-noship/flp \
+            -D__func__=__PRETTY_FUNCTION__ \
+            -fno-short-enums
+
+libloc_core_la_h_sources = \
+           LocApiBase.h \
+           LocAdapterBase.h \
+           ContextBase.h \
+           LocDualContext.h \
+           LBSProxyBase.h \
+           UlpProxyBase.h \
+           loc_core_log.h \
+           LocAdapterProxyBase.h \
+           SystemStatus.h
+
+libloc_core_la_c_sources = \
+           LocApiBase.cpp \
+           LocAdapterBase.cpp \
+           ContextBase.cpp \
+           LocDualContext.cpp \
+           loc_core_log.cpp \
+           SystemStatus.cpp
+
+library_includedir = $(pkgincludedir)/core
+
+library_include_HEADERS = $(libloc_core_la_h_sources)
+
+libloc_core_la_SOURCES = $(libloc_core_la_c_sources)
+
+if USE_GLIB
+libloc_core_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+libloc_core_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
+libloc_core_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libloc_core_la_CFLAGS = $(AM_CFLAGS)
+libloc_core_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
+libloc_core_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+libloc_core_la_LIBADD = -lstdc++ -ldl $(LOCPLA_LIBS) $(GPSUTILS_LIBS)
+
+#Create and Install libraries
+lib_LTLIBRARIES = libloc_core.la
diff --git a/sdm845/core/SystemStatus.cpp b/sdm845/core/SystemStatus.cpp
new file mode 100644
index 0000000..f4f07f2
--- /dev/null
+++ b/sdm845/core/SystemStatus.cpp
@@ -0,0 +1,1601 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_TAG "LocSvc_SystemStatus"
+
+#include <string>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <pthread.h>
+#include <platform_lib_log_util.h>
+#include <loc_nmea.h>
+#include <SystemStatus.h>
+
+namespace loc_core
+{
+
+/******************************************************************************
+ SystemStatusNmeaBase - base class for all NMEA parsers
+******************************************************************************/
+class SystemStatusNmeaBase
+{
+protected:
+    std::vector<std::string> mField;
+
+    SystemStatusNmeaBase(const char *str_in, uint32_t len_in)
+    {
+        // check size and talker
+        if (!loc_nmea_is_debug(str_in, len_in)) {
+            return;
+        }
+
+        std::string parser(str_in);
+        std::string::size_type index = 0;
+
+        // verify checksum field
+        index = parser.find("*");
+        if (index == std::string::npos) {
+            return;
+        }
+        parser[index] = ',';
+
+        // tokenize parser
+        while (1) {
+            std::string str;
+            index = parser.find(",");
+            if (index == std::string::npos) {
+                break;
+            }
+            str = parser.substr(0, index);
+            parser = parser.substr(index + 1);
+            mField.push_back(str);
+        }
+    }
+
+    virtual ~SystemStatusNmeaBase() { }
+
+public:
+    static const uint32_t NMEA_MINSIZE = DEBUG_NMEA_MINSIZE;
+    static const uint32_t NMEA_MAXSIZE = DEBUG_NMEA_MAXSIZE;
+};
+
+/******************************************************************************
+ SystemStatusPQWM1
+******************************************************************************/
+class SystemStatusPQWM1
+{
+public:
+    uint16_t mGpsWeek;    // x1
+    uint32_t mGpsTowMs;   // x2
+    uint8_t  mTimeValid;  // x3
+    uint8_t  mTimeSource; // x4
+    int32_t  mTimeUnc;    // x5
+    int32_t  mClockFreqBias; // x6
+    int32_t  mClockFreqBiasUnc; // x7
+    uint8_t  mXoState;    // x8
+    int32_t  mPgaGain;    // x9
+    uint32_t mGpsBpAmpI;  // xA
+    uint32_t mGpsBpAmpQ;  // xB
+    uint32_t mAdcI;       // xC
+    uint32_t mAdcQ;       // xD
+    uint32_t mJammerGps;  // xE
+    uint32_t mJammerGlo;  // xF
+    uint32_t mJammerBds;  // x10
+    uint32_t mJammerGal;  // x11
+    uint32_t mRecErrorRecovery; // x12
+    double   mAgcGps;     // x13
+    double   mAgcGlo;     // x14
+    double   mAgcBds;     // x15
+    double   mAgcGal;     // x16
+    int32_t  mLeapSeconds;// x17
+    int32_t  mLeapSecUnc; // x18
+};
+
+// parser
+class SystemStatusPQWM1parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eGpsWeek = 1,
+        eGpsTowMs = 2,
+        eTimeValid = 3,
+        eTimeSource = 4,
+        eTimeUnc = 5,
+        eClockFreqBias = 6,
+        eClockFreqBiasUnc = 7,
+        eXoState = 8,
+        ePgaGain = 9,
+        eGpsBpAmpI = 10,
+        eGpsBpAmpQ = 11,
+        eAdcI = 12,
+        eAdcQ = 13,
+        eJammerGps = 14,
+        eJammerGlo = 15,
+        eJammerBds = 16,
+        eJammerGal = 17,
+        eRecErrorRecovery = 18,
+        eAgcGps = 19,
+        eAgcGlo = 20,
+        eAgcBds = 21,
+        eAgcGal = 22,
+        eLeapSeconds = 23,
+        eLeapSecUnc = 24,
+        eMax
+    };
+    SystemStatusPQWM1 mM1;
+
+public:
+    inline uint16_t   getGpsWeek()    { return mM1.mGpsWeek; }
+    inline uint32_t   getGpsTowMs()   { return mM1.mGpsTowMs; }
+    inline uint8_t    getTimeValid()  { return mM1.mTimeValid; }
+    inline uint8_t    getTimeSource() { return mM1.mTimeSource; }
+    inline int32_t    getTimeUnc()    { return mM1.mTimeUnc; }
+    inline int32_t    getClockFreqBias() { return mM1.mClockFreqBias; }
+    inline int32_t    getClockFreqBiasUnc() { return mM1.mClockFreqBiasUnc; }
+    inline uint8_t    getXoState()    { return mM1.mXoState;}
+    inline int32_t    getPgaGain()    { return mM1.mPgaGain;          }
+    inline uint32_t   getGpsBpAmpI()  { return mM1.mGpsBpAmpI;        }
+    inline uint32_t   getGpsBpAmpQ()  { return mM1.mGpsBpAmpQ;        }
+    inline uint32_t   getAdcI()       { return mM1.mAdcI;             }
+    inline uint32_t   getAdcQ()       { return mM1.mAdcQ;             }
+    inline uint32_t   getJammerGps()  { return mM1.mJammerGps;        }
+    inline uint32_t   getJammerGlo()  { return mM1.mJammerGlo;        }
+    inline uint32_t   getJammerBds()  { return mM1.mJammerBds;        }
+    inline uint32_t   getJammerGal()  { return mM1.mJammerGal;        }
+    inline uint32_t   getAgcGps()     { return mM1.mAgcGps;           }
+    inline uint32_t   getAgcGlo()     { return mM1.mAgcGlo;           }
+    inline uint32_t   getAgcBds()     { return mM1.mAgcBds;           }
+    inline uint32_t   getAgcGal()     { return mM1.mAgcGal;           }
+    inline uint32_t   getRecErrorRecovery() { return mM1.mRecErrorRecovery; }
+    inline int32_t    getLeapSeconds(){ return mM1.mLeapSeconds; }
+    inline int32_t    getLeapSecUnc() { return mM1.mLeapSecUnc; }
+
+    SystemStatusPQWM1parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            LOC_LOGE("PQWM1parser - invalid size=%d", mField.size());
+            return;
+        }
+        memset(&mM1, 0, sizeof(mM1));
+        mM1.mGpsWeek = atoi(mField[eGpsWeek].c_str());
+        mM1.mGpsTowMs = atoi(mField[eGpsTowMs].c_str());
+        mM1.mTimeValid = atoi(mField[eTimeValid].c_str());
+        mM1.mTimeSource = atoi(mField[eTimeSource].c_str());
+        mM1.mTimeUnc = atoi(mField[eTimeUnc].c_str());
+        mM1.mClockFreqBias = atoi(mField[eClockFreqBias].c_str());
+        mM1.mClockFreqBiasUnc = atoi(mField[eClockFreqBiasUnc].c_str());
+        mM1.mXoState = atoi(mField[eXoState].c_str());
+        mM1.mPgaGain = atoi(mField[ePgaGain].c_str());
+        mM1.mGpsBpAmpI = atoi(mField[eGpsBpAmpI].c_str());
+        mM1.mGpsBpAmpQ = atoi(mField[eGpsBpAmpQ].c_str());
+        mM1.mAdcI = atoi(mField[eAdcI].c_str());
+        mM1.mAdcQ = atoi(mField[eAdcQ].c_str());
+        mM1.mJammerGps = atoi(mField[eJammerGps].c_str());
+        mM1.mJammerGlo = atoi(mField[eJammerGlo].c_str());
+        mM1.mJammerBds = atoi(mField[eJammerBds].c_str());
+        mM1.mJammerGal = atoi(mField[eJammerGal].c_str());
+        mM1.mRecErrorRecovery = atoi(mField[eRecErrorRecovery].c_str());
+        mM1.mAgcGps = atof(mField[eAgcGps].c_str());
+        mM1.mAgcGlo = atof(mField[eAgcGlo].c_str());
+        mM1.mAgcBds = atof(mField[eAgcBds].c_str());
+        mM1.mAgcGal = atof(mField[eAgcGal].c_str());
+        mM1.mLeapSeconds = atoi(mField[eLeapSeconds].c_str());
+        mM1.mLeapSecUnc = atoi(mField[eLeapSecUnc].c_str());
+    }
+
+    inline SystemStatusPQWM1& get() { return mM1;} //getparser
+};
+
+/******************************************************************************
+ SystemStatusPQWP1
+******************************************************************************/
+class SystemStatusPQWP1
+{
+public:
+    uint8_t  mEpiValidity; // x4
+    float    mEpiLat;    // x5
+    float    mEpiLon;    // x6
+    float    mEpiAlt;    // x7
+    float    mEpiHepe;   // x8
+    float    mEpiAltUnc; // x9
+    uint8_t  mEpiSrc;    // x10
+};
+
+class SystemStatusPQWP1parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eEpiValidity = 2,
+        eEpiLat = 3,
+        eEpiLon = 4,
+        eEpiAlt = 5,
+        eEpiHepe = 6,
+        eEpiAltUnc = 7,
+        eEpiSrc = 8,
+        eMax
+    };
+    SystemStatusPQWP1 mP1;
+
+public:
+    inline uint8_t    getEpiValidity() { return mP1.mEpiValidity;      }
+    inline float      getEpiLat() { return mP1.mEpiLat;           }
+    inline float      getEpiLon() { return mP1.mEpiLon;           }
+    inline float      getEpiAlt() { return mP1.mEpiAlt;           }
+    inline float      getEpiHepe() { return mP1.mEpiHepe;          }
+    inline float      getEpiAltUnc() { return mP1.mEpiAltUnc;        }
+    inline uint8_t    getEpiSrc() { return mP1.mEpiSrc;           }
+
+    SystemStatusPQWP1parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP1, 0, sizeof(mP1));
+        mP1.mEpiValidity = strtol(mField[eEpiValidity].c_str(), NULL, 16);
+        mP1.mEpiLat = atof(mField[eEpiLat].c_str());
+        mP1.mEpiLon = atof(mField[eEpiLon].c_str());
+        mP1.mEpiAlt = atof(mField[eEpiAlt].c_str());
+        mP1.mEpiHepe = atoi(mField[eEpiHepe].c_str());
+        mP1.mEpiAltUnc = atof(mField[eEpiAltUnc].c_str());
+        mP1.mEpiSrc = atoi(mField[eEpiSrc].c_str());
+    }
+
+    inline SystemStatusPQWP1& get() { return mP1;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP2
+******************************************************************************/
+class SystemStatusPQWP2
+{
+public:
+    float    mBestLat;   // x4
+    float    mBestLon;   // x5
+    float    mBestAlt;   // x6
+    float    mBestHepe;  // x7
+    float    mBestAltUnc; // x8
+};
+
+class SystemStatusPQWP2parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eBestLat = 2,
+        eBestLon = 3,
+        eBestAlt = 4,
+        eBestHepe = 5,
+        eBestAltUnc = 6,
+        eMax
+    };
+    SystemStatusPQWP2 mP2;
+
+public:
+    inline float      getBestLat() { return mP2.mBestLat;          }
+    inline float      getBestLon() { return mP2.mBestLon;          }
+    inline float      getBestAlt() { return mP2.mBestAlt;          }
+    inline float      getBestHepe() { return mP2.mBestHepe;         }
+    inline float      getBestAltUnc() { return mP2.mBestAltUnc;       }
+
+    SystemStatusPQWP2parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP2, 0, sizeof(mP2));
+        mP2.mBestLat = atof(mField[eBestLat].c_str());
+        mP2.mBestLon = atof(mField[eBestLon].c_str());
+        mP2.mBestAlt = atof(mField[eBestAlt].c_str());
+        mP2.mBestHepe = atof(mField[eBestHepe].c_str());
+        mP2.mBestAltUnc = atof(mField[eBestAltUnc].c_str());
+    }
+
+    inline SystemStatusPQWP2& get() { return mP2;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP3
+******************************************************************************/
+class SystemStatusPQWP3
+{
+public:
+    uint8_t   mXtraValidMask;
+    uint32_t  mGpsXtraAge;
+    uint32_t  mGloXtraAge;
+    uint32_t  mBdsXtraAge;
+    uint32_t  mGalXtraAge;
+    uint32_t  mQzssXtraAge;
+    uint32_t  mGpsXtraValid;
+    uint32_t  mGloXtraValid;
+    uint64_t  mBdsXtraValid;
+    uint64_t  mGalXtraValid;
+    uint8_t   mQzssXtraValid;
+};
+
+class SystemStatusPQWP3parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eXtraValidMask = 2,
+        eGpsXtraAge = 3,
+        eGloXtraAge = 4,
+        eBdsXtraAge = 5,
+        eGalXtraAge = 6,
+        eQzssXtraAge = 7,
+        eGpsXtraValid = 8,
+        eGloXtraValid = 9,
+        eBdsXtraValid = 10,
+        eGalXtraValid = 11,
+        eQzssXtraValid = 12,
+        eMax
+    };
+    SystemStatusPQWP3 mP3;
+
+public:
+    inline uint8_t    getXtraValid() { return mP3.mXtraValidMask;   }
+    inline uint32_t   getGpsXtraAge() { return mP3.mGpsXtraAge;       }
+    inline uint32_t   getGloXtraAge() { return mP3.mGloXtraAge;       }
+    inline uint32_t   getBdsXtraAge() { return mP3.mBdsXtraAge;       }
+    inline uint32_t   getGalXtraAge() { return mP3.mGalXtraAge;       }
+    inline uint32_t   getQzssXtraAge() { return mP3.mQzssXtraAge;      }
+    inline uint32_t   getGpsXtraValid() { return mP3.mGpsXtraValid;     }
+    inline uint32_t   getGloXtraValid() { return mP3.mGloXtraValid;     }
+    inline uint64_t   getBdsXtraValid() { return mP3.mBdsXtraValid;     }
+    inline uint64_t   getGalXtraValid() { return mP3.mGalXtraValid;     }
+    inline uint8_t    getQzssXtraValid() { return mP3.mQzssXtraValid;    }
+
+    SystemStatusPQWP3parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP3, 0, sizeof(mP3));
+        mP3.mXtraValidMask = strtol(mField[eXtraValidMask].c_str(), NULL, 16);
+        mP3.mGpsXtraAge = atoi(mField[eGpsXtraAge].c_str());
+        mP3.mGloXtraAge = atoi(mField[eGloXtraAge].c_str());
+        mP3.mBdsXtraAge = atoi(mField[eBdsXtraAge].c_str());
+        mP3.mGalXtraAge = atoi(mField[eGalXtraAge].c_str());
+        mP3.mQzssXtraAge = atoi(mField[eQzssXtraAge].c_str());
+        mP3.mGpsXtraValid = strtol(mField[eGpsXtraValid].c_str(), NULL, 16);
+        mP3.mGloXtraValid = strtol(mField[eGloXtraValid].c_str(), NULL, 16);
+        mP3.mBdsXtraValid = strtol(mField[eBdsXtraValid].c_str(), NULL, 16);
+        mP3.mGalXtraValid = strtol(mField[eGalXtraValid].c_str(), NULL, 16);
+        mP3.mQzssXtraValid = strtol(mField[eQzssXtraValid].c_str(), NULL, 16);
+    }
+
+    inline SystemStatusPQWP3& get() { return mP3;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP4
+******************************************************************************/
+class SystemStatusPQWP4
+{
+public:
+    uint32_t  mGpsEpheValid;
+    uint32_t  mGloEpheValid;
+    uint64_t  mBdsEpheValid;
+    uint64_t  mGalEpheValid;
+    uint8_t   mQzssEpheValid;
+};
+
+class SystemStatusPQWP4parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eGpsEpheValid = 2,
+        eGloEpheValid = 3,
+        eBdsEpheValid = 4,
+        eGalEpheValid = 5,
+        eQzssEpheValid = 6,
+        eMax
+    };
+    SystemStatusPQWP4 mP4;
+
+public:
+    inline uint32_t   getGpsEpheValid() { return mP4.mGpsEpheValid;     }
+    inline uint32_t   getGloEpheValid() { return mP4.mGloEpheValid;     }
+    inline uint64_t   getBdsEpheValid() { return mP4.mBdsEpheValid;     }
+    inline uint64_t   getGalEpheValid() { return mP4.mGalEpheValid;     }
+    inline uint8_t    getQzssEpheValid() { return mP4.mQzssEpheValid;    }
+
+    SystemStatusPQWP4parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP4, 0, sizeof(mP4));
+        mP4.mGpsEpheValid = strtol(mField[eGpsEpheValid].c_str(), NULL, 16);
+        mP4.mGloEpheValid = strtol(mField[eGloEpheValid].c_str(), NULL, 16);
+        mP4.mBdsEpheValid = strtol(mField[eBdsEpheValid].c_str(), NULL, 16);
+        mP4.mGalEpheValid = strtol(mField[eGalEpheValid].c_str(), NULL, 16);
+        mP4.mQzssEpheValid = strtol(mField[eQzssEpheValid].c_str(), NULL, 16);
+    }
+
+    inline SystemStatusPQWP4& get() { return mP4;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP5
+******************************************************************************/
+class SystemStatusPQWP5
+{
+public:
+    uint32_t  mGpsUnknownMask;
+    uint32_t  mGloUnknownMask;
+    uint64_t  mBdsUnknownMask;
+    uint64_t  mGalUnknownMask;
+    uint8_t   mQzssUnknownMask;
+    uint32_t  mGpsGoodMask;
+    uint32_t  mGloGoodMask;
+    uint64_t  mBdsGoodMask;
+    uint64_t  mGalGoodMask;
+    uint8_t   mQzssGoodMask;
+    uint32_t  mGpsBadMask;
+    uint32_t  mGloBadMask;
+    uint64_t  mBdsBadMask;
+    uint64_t  mGalBadMask;
+    uint8_t   mQzssBadMask;
+};
+
+class SystemStatusPQWP5parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eGpsUnknownMask = 2,
+        eGloUnknownMask = 3,
+        eBdsUnknownMask = 4,
+        eGalUnknownMask = 5,
+        eQzssUnknownMask = 6,
+        eGpsGoodMask = 7,
+        eGloGoodMask = 8,
+        eBdsGoodMask = 9,
+        eGalGoodMask = 10,
+        eQzssGoodMask = 11,
+        eGpsBadMask = 12,
+        eGloBadMask = 13,
+        eBdsBadMask = 14,
+        eGalBadMask = 15,
+        eQzssBadMask = 16,
+        eMax
+    };
+    SystemStatusPQWP5 mP5;
+
+public:
+    inline uint32_t   getGpsUnknownMask() { return mP5.mGpsUnknownMask;   }
+    inline uint32_t   getGloUnknownMask() { return mP5.mGloUnknownMask;   }
+    inline uint64_t   getBdsUnknownMask() { return mP5.mBdsUnknownMask;   }
+    inline uint64_t   getGalUnknownMask() { return mP5.mGalUnknownMask;   }
+    inline uint8_t    getQzssUnknownMask() { return mP5.mQzssUnknownMask;  }
+    inline uint32_t   getGpsGoodMask() { return mP5.mGpsGoodMask;      }
+    inline uint32_t   getGloGoodMask() { return mP5.mGloGoodMask;      }
+    inline uint64_t   getBdsGoodMask() { return mP5.mBdsGoodMask;      }
+    inline uint64_t   getGalGoodMask() { return mP5.mGalGoodMask;      }
+    inline uint8_t    getQzssGoodMask() { return mP5.mQzssGoodMask;     }
+    inline uint32_t   getGpsBadMask() { return mP5.mGpsBadMask;       }
+    inline uint32_t   getGloBadMask() { return mP5.mGloBadMask;       }
+    inline uint64_t   getBdsBadMask() { return mP5.mBdsBadMask;       }
+    inline uint64_t   getGalBadMask() { return mP5.mGalBadMask;       }
+    inline uint8_t    getQzssBadMask() { return mP5.mQzssBadMask;      }
+
+    SystemStatusPQWP5parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP5, 0, sizeof(mP5));
+        mP5.mGpsUnknownMask = strtol(mField[eGpsUnknownMask].c_str(), NULL, 16);
+        mP5.mGloUnknownMask = strtol(mField[eGloUnknownMask].c_str(), NULL, 16);
+        mP5.mBdsUnknownMask = strtol(mField[eBdsUnknownMask].c_str(), NULL, 16);
+        mP5.mGalUnknownMask = strtol(mField[eGalUnknownMask].c_str(), NULL, 16);
+        mP5.mQzssUnknownMask = strtol(mField[eQzssUnknownMask].c_str(), NULL, 16);
+        mP5.mGpsGoodMask = strtol(mField[eGpsGoodMask].c_str(), NULL, 16);
+        mP5.mGloGoodMask = strtol(mField[eGloGoodMask].c_str(), NULL, 16);
+        mP5.mBdsGoodMask = strtol(mField[eBdsGoodMask].c_str(), NULL, 16);
+        mP5.mGalGoodMask = strtol(mField[eGalGoodMask].c_str(), NULL, 16);
+        mP5.mQzssGoodMask = strtol(mField[eQzssGoodMask].c_str(), NULL, 16);
+        mP5.mGpsBadMask = strtol(mField[eGpsBadMask].c_str(), NULL, 16);
+        mP5.mGloBadMask = strtol(mField[eGloBadMask].c_str(), NULL, 16);
+        mP5.mBdsBadMask = strtol(mField[eBdsBadMask].c_str(), NULL, 16);
+        mP5.mGalBadMask = strtol(mField[eGalBadMask].c_str(), NULL, 16);
+        mP5.mQzssBadMask = strtol(mField[eQzssBadMask].c_str(), NULL, 16);
+    }
+
+    inline SystemStatusPQWP5& get() { return mP5;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP6parser
+******************************************************************************/
+class SystemStatusPQWP6
+{
+public:
+    uint32_t  mFixInfoMask;
+};
+
+class SystemStatusPQWP6parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eFixInfoMask = 2,
+        eMax
+    };
+    SystemStatusPQWP6 mP6;
+
+public:
+    inline uint32_t   getFixInfoMask() { return mP6.mFixInfoMask;      }
+
+    SystemStatusPQWP6parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mP6, 0, sizeof(mP6));
+        mP6.mFixInfoMask = strtol(mField[eFixInfoMask].c_str(), NULL, 16);
+    }
+
+    inline SystemStatusPQWP6& get() { return mP6;}
+};
+
+/******************************************************************************
+ SystemStatusPQWP7parser
+******************************************************************************/
+class SystemStatusPQWP7
+{
+public:
+    SystemStatusNav mNav[SV_ALL_NUM];
+};
+
+class SystemStatusPQWP7parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eMax = 2 + SV_ALL_NUM*3
+    };
+    SystemStatusPQWP7 mP7;
+
+public:
+    SystemStatusPQWP7parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            LOC_LOGE("PQWP7parser - invalid size=%d", mField.size());
+            return;
+        }
+        for (uint32_t i=0; i<SV_ALL_NUM; i++) {
+            mP7.mNav[i].mType   = GnssEphemerisType(atoi(mField[i*3+2].c_str()));
+            mP7.mNav[i].mSource = GnssEphemerisSource(atoi(mField[i*3+3].c_str()));
+            mP7.mNav[i].mAgeSec = atoi(mField[i*3+4].c_str());
+        }
+    }
+
+    inline SystemStatusPQWP7& get() { return mP7;}
+};
+
+/******************************************************************************
+ SystemStatusPQWS1parser
+******************************************************************************/
+class SystemStatusPQWS1
+{
+public:
+    uint32_t  mFixInfoMask;
+    uint32_t  mHepeLimit;
+};
+
+class SystemStatusPQWS1parser : public SystemStatusNmeaBase
+{
+private:
+    enum
+    {
+        eTalker = 0,
+        eUtcTime = 1,
+        eFixInfoMask = 2,
+        eHepeLimit = 3,
+        eMax
+    };
+    SystemStatusPQWS1 mS1;
+
+public:
+    inline uint16_t   getFixInfoMask() { return mS1.mFixInfoMask;      }
+    inline uint32_t   getHepeLimit()   { return mS1.mHepeLimit;      }
+
+    SystemStatusPQWS1parser(const char *str_in, uint32_t len_in)
+        : SystemStatusNmeaBase(str_in, len_in)
+    {
+        if (mField.size() < eMax) {
+            return;
+        }
+        memset(&mS1, 0, sizeof(mS1));
+        mS1.mFixInfoMask = atoi(mField[eFixInfoMask].c_str());
+        mS1.mHepeLimit = atoi(mField[eHepeLimit].c_str());
+    }
+
+    inline SystemStatusPQWS1& get() { return mS1;}
+};
+
+/******************************************************************************
+ SystemStatusTimeAndClock
+******************************************************************************/
+SystemStatusTimeAndClock::SystemStatusTimeAndClock(const SystemStatusPQWM1& nmea) :
+    mGpsWeek(nmea.mGpsWeek),
+    mGpsTowMs(nmea.mGpsTowMs),
+    mTimeValid(nmea.mTimeValid),
+    mTimeSource(nmea.mTimeSource),
+    mTimeUnc(nmea.mTimeUnc),
+    mClockFreqBias(nmea.mClockFreqBias),
+    mClockFreqBiasUnc(nmea.mClockFreqBiasUnc),
+    mLeapSeconds(nmea.mLeapSeconds),
+    mLeapSecUnc(nmea.mLeapSecUnc)
+{
+}
+
+bool SystemStatusTimeAndClock::equals(SystemStatusTimeAndClock& peer)
+{
+    if ((mGpsWeek != peer.mGpsWeek) ||
+        (mGpsTowMs != peer.mGpsTowMs) ||
+        (mTimeValid != peer.mTimeValid) ||
+        (mTimeSource != peer.mTimeSource) ||
+        (mTimeUnc != peer.mTimeUnc) ||
+        (mClockFreqBias != peer.mClockFreqBias) ||
+        (mClockFreqBiasUnc != peer.mClockFreqBiasUnc) ||
+        (mLeapSeconds != peer.mLeapSeconds) ||
+        (mLeapSecUnc != peer.mLeapSecUnc)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusTimeAndClock::dump()
+{
+    LOC_LOGV("TimeAndClock: u=%ld:%ld g=%d:%d v=%d ts=%d tu=%d b=%d bu=%d ls=%d lu=%d",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mGpsWeek,
+             mGpsTowMs,
+             mTimeValid,
+             mTimeSource,
+             mTimeUnc,
+             mClockFreqBias,
+             mClockFreqBiasUnc,
+             mLeapSeconds,
+             mLeapSecUnc);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusXoState
+******************************************************************************/
+SystemStatusXoState::SystemStatusXoState(const SystemStatusPQWM1& nmea) :
+    mXoState(nmea.mXoState)
+{
+}
+
+bool SystemStatusXoState::equals(SystemStatusXoState& peer)
+{
+    if (mXoState != peer.mXoState) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusXoState::dump()
+{
+    LOC_LOGV("XoState: u=%ld:%ld x=%d",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mXoState);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusRfAndParams
+******************************************************************************/
+SystemStatusRfAndParams::SystemStatusRfAndParams(const SystemStatusPQWM1& nmea) :
+    mPgaGain(nmea.mPgaGain),
+    mGpsBpAmpI(nmea.mGpsBpAmpI),
+    mGpsBpAmpQ(nmea.mGpsBpAmpQ),
+    mAdcI(nmea.mAdcI),
+    mAdcQ(nmea.mAdcQ),
+    mJammerGps(nmea.mJammerGps),
+    mJammerGlo(nmea.mJammerGlo),
+    mJammerBds(nmea.mJammerBds),
+    mJammerGal(nmea.mJammerGal),
+    mAgcGps(nmea.mAgcGps),
+    mAgcGlo(nmea.mAgcGlo),
+    mAgcBds(nmea.mAgcBds),
+    mAgcGal(nmea.mAgcGal)
+{
+}
+
+bool SystemStatusRfAndParams::equals(SystemStatusRfAndParams& peer)
+{
+    if ((mPgaGain != peer.mPgaGain) ||
+        (mGpsBpAmpI != peer.mGpsBpAmpI) ||
+        (mGpsBpAmpQ != peer.mGpsBpAmpQ) ||
+        (mAdcI != peer.mAdcI) ||
+        (mAdcQ != peer.mAdcQ) ||
+        (mJammerGps != peer.mJammerGps) ||
+        (mJammerGlo != peer.mJammerGlo) ||
+        (mJammerBds != peer.mJammerBds) ||
+        (mJammerGal != peer.mJammerGal) ||
+        (mAgcGps != peer.mAgcGps) ||
+        (mAgcGlo != peer.mAgcGlo) ||
+        (mAgcBds != peer.mAgcBds) ||
+        (mAgcGal != peer.mAgcGal)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusRfAndParams::dump()
+{
+    LOC_LOGV("RfAndParams: u=%ld:%ld p=%d bi=%d bq=%d ai=%d aq=%d "
+             "jgp=%d jgl=%d jbd=%d jga=%d "
+             "agp=%lf agl=%lf abd=%lf aga=%lf",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mPgaGain,
+             mGpsBpAmpI,
+             mGpsBpAmpQ,
+             mAdcI,
+             mAdcQ,
+             mJammerGps,
+             mJammerGlo,
+             mJammerBds,
+             mJammerGal,
+             mAgcGps,
+             mAgcGlo,
+             mAgcBds,
+             mAgcGal);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusErrRecovery
+******************************************************************************/
+SystemStatusErrRecovery::SystemStatusErrRecovery(const SystemStatusPQWM1& nmea) :
+    mRecErrorRecovery(nmea.mRecErrorRecovery)
+{
+}
+
+bool SystemStatusErrRecovery::equals(SystemStatusErrRecovery& peer)
+{
+    if (mRecErrorRecovery != peer.mRecErrorRecovery) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusErrRecovery::dump()
+{
+    LOC_LOGV("ErrRecovery: u=%ld:%ld e=%d",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mRecErrorRecovery);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusInjectedPosition
+******************************************************************************/
+SystemStatusInjectedPosition::SystemStatusInjectedPosition(const SystemStatusPQWP1& nmea) :
+    mEpiValidity(nmea.mEpiValidity),
+    mEpiLat(nmea.mEpiLat),
+    mEpiLon(nmea.mEpiLon),
+    mEpiAlt(nmea.mEpiAlt),
+    mEpiHepe(nmea.mEpiHepe),
+    mEpiAltUnc(nmea.mEpiAltUnc),
+    mEpiSrc(nmea.mEpiSrc)
+{
+}
+
+bool SystemStatusInjectedPosition::equals(SystemStatusInjectedPosition& peer)
+{
+    if ((mEpiValidity != peer.mEpiValidity) ||
+        (mEpiLat != peer.mEpiLat) ||
+        (mEpiLon != peer.mEpiLon) ||
+        (mEpiAlt != peer.mEpiAlt) ||
+        (mEpiHepe != peer.mEpiHepe) ||
+        (mEpiAltUnc != peer.mEpiAltUnc) ||
+        (mEpiSrc != peer.mEpiSrc)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusInjectedPosition::dump()
+{
+    LOC_LOGV("InjectedPosition: u=%ld:%ld v=%x la=%f lo=%f al=%f he=%f au=%f es=%d",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mEpiValidity,
+             mEpiLat,
+             mEpiLon,
+             mEpiAlt,
+             mEpiHepe,
+             mEpiAltUnc,
+             mEpiSrc);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusBestPosition
+******************************************************************************/
+SystemStatusBestPosition::SystemStatusBestPosition(const SystemStatusPQWP2& nmea) :
+    mBestLat(nmea.mBestLat),
+    mBestLon(nmea.mBestLon),
+    mBestAlt(nmea.mBestAlt),
+    mBestHepe(nmea.mBestHepe),
+    mBestAltUnc(nmea.mBestAltUnc)
+{
+}
+
+bool SystemStatusBestPosition::equals(SystemStatusBestPosition& peer)
+{
+    if ((mBestLat != peer.mBestLat) ||
+        (mBestLon != peer.mBestLon) ||
+        (mBestAlt != peer.mBestAlt) ||
+        (mBestHepe != peer.mBestHepe) ||
+        (mBestAltUnc != peer.mBestAltUnc)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusBestPosition::dump()
+{
+    LOC_LOGV("BestPosition: u=%ld:%ld la=%f lo=%f al=%f he=%f au=%f",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mBestLat,
+             mBestLon,
+             mBestAlt,
+             mBestHepe,
+             mBestAltUnc);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusXtra
+******************************************************************************/
+SystemStatusXtra::SystemStatusXtra(const SystemStatusPQWP3& nmea) :
+    mXtraValidMask(nmea.mXtraValidMask),
+    mGpsXtraAge(nmea.mGpsXtraAge),
+    mGloXtraAge(nmea.mGloXtraAge),
+    mBdsXtraAge(nmea.mBdsXtraAge),
+    mGalXtraAge(nmea.mGalXtraAge),
+    mQzssXtraAge(nmea.mQzssXtraAge),
+    mGpsXtraValid(nmea.mGpsXtraValid),
+    mGloXtraValid(nmea.mGloXtraValid),
+    mBdsXtraValid(nmea.mBdsXtraValid),
+    mGalXtraValid(nmea.mGalXtraValid),
+    mQzssXtraValid(nmea.mQzssXtraValid)
+{
+}
+
+bool SystemStatusXtra::equals(SystemStatusXtra& peer)
+{
+    if ((mXtraValidMask != peer.mXtraValidMask) ||
+        (mGpsXtraAge != peer.mGpsXtraAge) ||
+        (mGloXtraAge != peer.mGloXtraAge) ||
+        (mBdsXtraAge != peer.mBdsXtraAge) ||
+        (mGalXtraAge != peer.mGalXtraAge) ||
+        (mQzssXtraAge != peer.mQzssXtraAge) ||
+        (mGpsXtraValid != peer.mGpsXtraValid) ||
+        (mGloXtraValid != peer.mGloXtraValid) ||
+        (mBdsXtraValid != peer.mBdsXtraValid) ||
+        (mGalXtraValid != peer.mGalXtraValid) ||
+        (mQzssXtraValid != peer.mQzssXtraValid)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusXtra::dump()
+{
+    LOC_LOGV("SystemStatusXtra: u=%ld:%ld m=%x a=%d:%d:%d:%d:%d v=%x:%x:%x:%x:%x",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mXtraValidMask,
+             mGpsXtraAge,
+             mGloXtraAge,
+             mBdsXtraAge,
+             mGalXtraAge,
+             mQzssXtraAge,
+             mGpsXtraValid,
+             mGloXtraValid,
+             mBdsXtraValid,
+             mGalXtraValid,
+             mQzssXtraValid);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusEphemeris
+******************************************************************************/
+SystemStatusEphemeris::SystemStatusEphemeris(const SystemStatusPQWP4& nmea) :
+    mGpsEpheValid(nmea.mGpsEpheValid),
+    mGloEpheValid(nmea.mGloEpheValid),
+    mBdsEpheValid(nmea.mBdsEpheValid),
+    mGalEpheValid(nmea.mGalEpheValid),
+    mQzssEpheValid(nmea.mQzssEpheValid)
+{
+}
+
+bool SystemStatusEphemeris::equals(SystemStatusEphemeris& peer)
+{
+    if ((mGpsEpheValid != peer.mGpsEpheValid) ||
+        (mGloEpheValid != peer.mGloEpheValid) ||
+        (mBdsEpheValid != peer.mBdsEpheValid) ||
+        (mGalEpheValid != peer.mGalEpheValid) ||
+        (mQzssEpheValid != peer.mQzssEpheValid)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusEphemeris::dump()
+{
+    LOC_LOGV("Ephemeris: u=%ld:%ld ev=%x:%x:%x:%x:%x",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mGpsEpheValid,
+             mGloEpheValid,
+             mBdsEpheValid,
+             mGalEpheValid,
+             mQzssEpheValid);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusSvHealth
+******************************************************************************/
+SystemStatusSvHealth::SystemStatusSvHealth(const SystemStatusPQWP5& nmea) :
+    mGpsUnknownMask(nmea.mGpsUnknownMask),
+    mGloUnknownMask(nmea.mGloUnknownMask),
+    mBdsUnknownMask(nmea.mBdsUnknownMask),
+    mGalUnknownMask(nmea.mGalUnknownMask),
+    mQzssUnknownMask(nmea.mQzssUnknownMask),
+    mGpsGoodMask(nmea.mGpsGoodMask),
+    mGloGoodMask(nmea.mGloGoodMask),
+    mBdsGoodMask(nmea.mBdsGoodMask),
+    mGalGoodMask(nmea.mGalGoodMask),
+    mQzssGoodMask(nmea.mQzssGoodMask),
+    mGpsBadMask(nmea.mGpsBadMask),
+    mGloBadMask(nmea.mGloBadMask),
+    mBdsBadMask(nmea.mBdsBadMask),
+    mGalBadMask(nmea.mGalBadMask),
+    mQzssBadMask(nmea.mQzssBadMask)
+{
+}
+
+bool SystemStatusSvHealth::equals(SystemStatusSvHealth& peer)
+{
+    if ((mGpsUnknownMask != peer.mGpsUnknownMask) ||
+        (mGloUnknownMask != peer.mGloUnknownMask) ||
+        (mBdsUnknownMask != peer.mBdsUnknownMask) ||
+        (mGalUnknownMask != peer.mGalUnknownMask) ||
+        (mQzssUnknownMask != peer.mQzssUnknownMask) ||
+        (mGpsGoodMask != peer.mGpsGoodMask) ||
+        (mGloGoodMask != peer.mGloGoodMask) ||
+        (mBdsGoodMask != peer.mBdsGoodMask) ||
+        (mGalGoodMask != peer.mGalGoodMask) ||
+        (mQzssGoodMask != peer.mQzssGoodMask) ||
+        (mGpsBadMask != peer.mGpsBadMask) ||
+        (mGloBadMask != peer.mGloBadMask) ||
+        (mBdsBadMask != peer.mBdsBadMask) ||
+        (mGalBadMask != peer.mGalBadMask) ||
+        (mQzssBadMask != peer.mQzssBadMask)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusSvHealth::dump()
+{
+    LOC_LOGV("SvHealth: u=%ld:%ld u=%x:%x:%x:%x:%x g=%x:%x:%x:%x:%x b=%x:%x:%x:%x:%x",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mGpsUnknownMask,
+             mGloUnknownMask,
+             mBdsUnknownMask,
+             mGalUnknownMask,
+             mQzssUnknownMask,
+             mGpsGoodMask,
+             mGloGoodMask,
+             mBdsGoodMask,
+             mGalGoodMask,
+             mQzssGoodMask,
+             mGpsBadMask,
+             mGloBadMask,
+             mBdsBadMask,
+             mGalBadMask,
+             mQzssBadMask);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusPdr
+******************************************************************************/
+SystemStatusPdr::SystemStatusPdr(const SystemStatusPQWP6& nmea) :
+    mFixInfoMask(nmea.mFixInfoMask)
+{
+}
+
+bool SystemStatusPdr::equals(SystemStatusPdr& peer)
+{
+    if (mFixInfoMask != peer.mFixInfoMask) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusPdr::dump()
+{
+    LOC_LOGV("Pdr: u=%ld:%ld m=%x",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mFixInfoMask);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusNavData
+******************************************************************************/
+SystemStatusNavData::SystemStatusNavData(const SystemStatusPQWP7& nmea)
+{
+    for (uint32_t i=0; i<SV_ALL_NUM; i++) {
+        mNav[i] = nmea.mNav[i];
+    }
+}
+
+bool SystemStatusNavData::equals(SystemStatusNavData& peer)
+{
+    for (uint32_t i=0; i<SV_ALL_NUM; i++) {
+        if ((mNav[i].mType != peer.mNav[i].mType) ||
+            (mNav[i].mSource != peer.mNav[i].mSource) ||
+            (mNav[i].mAgeSec != peer.mNav[i].mAgeSec)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+void SystemStatusNavData::dump()
+{
+    LOC_LOGV("NavData: u=%ld:%ld",
+            mUtcTime.tv_sec, mUtcTime.tv_nsec);
+    for (uint32_t i=0; i<SV_ALL_NUM; i++) {
+        LOC_LOGV("i=%d type=%d src=%d age=%d",
+            i, mNav[i].mType, mNav[i].mSource, mNav[i].mAgeSec);
+    }
+    return;
+}
+
+/******************************************************************************
+ SystemStatusPositionFailure
+******************************************************************************/
+SystemStatusPositionFailure::SystemStatusPositionFailure(const SystemStatusPQWS1& nmea) :
+    mFixInfoMask(nmea.mFixInfoMask),
+    mHepeLimit(nmea.mHepeLimit)
+{
+}
+
+bool SystemStatusPositionFailure::equals(SystemStatusPositionFailure& peer)
+{
+    if ((mFixInfoMask != peer.mFixInfoMask) ||
+        (mHepeLimit != peer.mHepeLimit)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusPositionFailure::dump()
+{
+    LOC_LOGV("PositionFailure: u=%ld:%ld m=%d h=%d",
+             mUtcTime.tv_sec, mUtcTime.tv_nsec,
+             mFixInfoMask,
+             mHepeLimit);
+    return;
+}
+
+/******************************************************************************
+ SystemStatusLocation
+******************************************************************************/
+bool SystemStatusLocation::equals(SystemStatusLocation& peer)
+{
+    if ((mLocation.gpsLocation.latitude != peer.mLocation.gpsLocation.latitude) ||
+        (mLocation.gpsLocation.longitude != peer.mLocation.gpsLocation.longitude) ||
+        (mLocation.gpsLocation.altitude != peer.mLocation.gpsLocation.altitude)) {
+        return false;
+    }
+    return true;
+}
+
+void SystemStatusLocation::dump()
+{
+    LOC_LOGV("Location: lat=%f lon=%f alt=%f spd=%f",
+             mLocation.gpsLocation.latitude,
+             mLocation.gpsLocation.longitude,
+             mLocation.gpsLocation.altitude,
+             mLocation.gpsLocation.speed);
+    return;
+}
+
+/******************************************************************************
+ SystemStatus
+******************************************************************************/
+pthread_mutex_t SystemStatus::mMutexSystemStatus = PTHREAD_MUTEX_INITIALIZER;
+
+SystemStatus::SystemStatus()
+{
+    mCache.mLocation.clear();
+
+    mCache.mTimeAndClock.clear();
+    mCache.mXoState.clear();
+    mCache.mRfAndParams.clear();
+    mCache.mErrRecovery.clear();
+
+    mCache.mInjectedPosition.clear();
+    mCache.mBestPosition.clear();
+    mCache.mXtra.clear();
+    mCache.mEphemeris.clear();
+    mCache.mSvHealth.clear();
+    mCache.mPdr.clear();
+    mCache.mNavData.clear();
+
+    mCache.mPositionFailure.clear();
+}
+
+/******************************************************************************
+ SystemStatus - M1 functions
+******************************************************************************/
+bool SystemStatus::setTimeAndCLock(const SystemStatusPQWM1& nmea)
+{
+    SystemStatusTimeAndClock s(nmea);
+    if (!mCache.mTimeAndClock.empty() && mCache.mTimeAndClock.back().equals(s)) {
+        mCache.mTimeAndClock.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mTimeAndClock.push_back(s);
+        if (mCache.mTimeAndClock.size() > maxTimeAndClock) {
+            mCache.mTimeAndClock.erase(mCache.mTimeAndClock.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setXoState(const SystemStatusPQWM1& nmea)
+{
+    SystemStatusXoState s(nmea);
+    if (!mCache.mXoState.empty() && mCache.mXoState.back().equals(s)) {
+        mCache.mXoState.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mXoState.push_back(s);
+        if (mCache.mXoState.size() > maxXoState) {
+            mCache.mXoState.erase(mCache.mXoState.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setRfAndParams(const SystemStatusPQWM1& nmea)
+{
+    SystemStatusRfAndParams s(nmea);
+    if (!mCache.mRfAndParams.empty() && mCache.mRfAndParams.back().equals(s)) {
+        mCache.mRfAndParams.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mRfAndParams.push_back(s);
+        if (mCache.mRfAndParams.size() > maxRfAndParams) {
+            mCache.mRfAndParams.erase(mCache.mRfAndParams.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setErrRecovery(const SystemStatusPQWM1& nmea)
+{
+    SystemStatusErrRecovery s(nmea);
+    if (!mCache.mErrRecovery.empty() && mCache.mErrRecovery.back().equals(s)) {
+        mCache.mErrRecovery.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mErrRecovery.push_back(s);
+        if (mCache.mErrRecovery.size() > maxErrRecovery) {
+            mCache.mErrRecovery.erase(mCache.mErrRecovery.begin());
+        }
+    }
+    return true;
+}
+
+/******************************************************************************
+ SystemStatus - Px functions
+******************************************************************************/
+bool SystemStatus::setInjectedPosition(const SystemStatusPQWP1& nmea)
+{
+    SystemStatusInjectedPosition s(nmea);
+    if (!mCache.mInjectedPosition.empty() && mCache.mInjectedPosition.back().equals(s)) {
+        mCache.mInjectedPosition.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mInjectedPosition.push_back(s);
+        if (mCache.mInjectedPosition.size() > maxInjectedPosition) {
+            mCache.mInjectedPosition.erase(mCache.mInjectedPosition.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setBestPosition(const SystemStatusPQWP2& nmea)
+{
+    SystemStatusBestPosition s(nmea);
+    if (!mCache.mBestPosition.empty() && mCache.mBestPosition.back().equals(s)) {
+        mCache.mBestPosition.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mBestPosition.push_back(s);
+        if (mCache.mBestPosition.size() > maxBestPosition) {
+            mCache.mBestPosition.erase(mCache.mBestPosition.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setXtra(const SystemStatusPQWP3& nmea)
+{
+    SystemStatusXtra s(nmea);
+    if (!mCache.mXtra.empty() && mCache.mXtra.back().equals(s)) {
+        mCache.mXtra.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mXtra.push_back(s);
+        if (mCache.mXtra.size() > maxXtra) {
+            mCache.mXtra.erase(mCache.mXtra.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setEphemeris(const SystemStatusPQWP4& nmea)
+{
+    SystemStatusEphemeris s(nmea);
+    if (!mCache.mEphemeris.empty() && mCache.mEphemeris.back().equals(s)) {
+        mCache.mEphemeris.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mEphemeris.push_back(s);
+        if (mCache.mEphemeris.size() > maxEphemeris) {
+            mCache.mEphemeris.erase(mCache.mEphemeris.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setSvHealth(const SystemStatusPQWP5& nmea)
+{
+    SystemStatusSvHealth s(nmea);
+    if (!mCache.mSvHealth.empty() && mCache.mSvHealth.back().equals(s)) {
+        mCache.mSvHealth.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mSvHealth.push_back(s);
+        if (mCache.mSvHealth.size() > maxSvHealth) {
+            mCache.mSvHealth.erase(mCache.mSvHealth.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setPdr(const SystemStatusPQWP6& nmea)
+{
+    SystemStatusPdr s(nmea);
+    if (!mCache.mPdr.empty() && mCache.mPdr.back().equals(s)) {
+        mCache.mPdr.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mPdr.push_back(s);
+        if (mCache.mPdr.size() > maxPdr) {
+            mCache.mPdr.erase(mCache.mPdr.begin());
+        }
+    }
+    return true;
+}
+
+bool SystemStatus::setNavData(const SystemStatusPQWP7& nmea)
+{
+    SystemStatusNavData s(nmea);
+    if (!mCache.mNavData.empty() && mCache.mNavData.back().equals(s)) {
+        mCache.mNavData.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mNavData.push_back(s);
+        if (mCache.mNavData.size() > maxNavData) {
+            mCache.mNavData.erase(mCache.mNavData.begin());
+        }
+    }
+    return true;
+}
+
+/******************************************************************************
+ SystemStatus - Sx functions
+******************************************************************************/
+bool SystemStatus::setPositionFailure(const SystemStatusPQWS1& nmea)
+{
+    SystemStatusPositionFailure s(nmea);
+    if (!mCache.mPositionFailure.empty() && mCache.mPositionFailure.back().equals(s)) {
+        mCache.mPositionFailure.back().mUtcReported = s.mUtcReported;
+    } else {
+        mCache.mPositionFailure.push_back(s);
+        if (mCache.mPositionFailure.size() > maxPositionFailure) {
+            mCache.mPositionFailure.erase(mCache.mPositionFailure.begin());
+        }
+    }
+    return true;
+}
+
+/******************************************************************************
+@brief      API to set report data into internal buffer
+
+@param[In]  data pointer to the NMEA string
+@param[In]  len  length of the NMEA string
+
+@return     true when successfully done
+******************************************************************************/
+static uint32_t cnt = 0;
+static uint32_t cnt_m1 = 0;
+static uint32_t cnt_p1 = 0;
+static uint32_t cnt_p2 = 0;
+static uint32_t cnt_p3 = 0;
+static uint32_t cnt_p4 = 0;
+static uint32_t cnt_p5 = 0;
+static uint32_t cnt_p6 = 0;
+static uint32_t cnt_p7 = 0;
+static uint32_t cnt_s1 = 0;
+
+bool SystemStatus::setNmeaString(const char *data, uint32_t len)
+{
+    bool ret = false;
+    if (!loc_nmea_is_debug(data, len)) {
+        return false;
+    }
+
+    char buf[SystemStatusNmeaBase::NMEA_MAXSIZE + 1] = { 0 };
+    strlcpy(buf, data, sizeof(buf));
+
+    pthread_mutex_lock(&mMutexSystemStatus);
+
+    // parse the received nmea strings here
+    if      (0 == strncmp(data, "$PQWM1", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        SystemStatusPQWM1 s = SystemStatusPQWM1parser(buf, len).get();
+        ret  = setTimeAndCLock(s);
+        ret |= setXoState(s);
+        ret |= setRfAndParams(s);
+        ret |= setErrRecovery(s);
+        cnt_m1++;
+    }
+    else if (0 == strncmp(data, "$PQWP1", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setInjectedPosition(SystemStatusPQWP1parser(buf, len).get());
+        cnt_p1++;
+    }
+    else if (0 == strncmp(data, "$PQWP2", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setBestPosition(SystemStatusPQWP2parser(buf, len).get());
+        cnt_p2++;
+    }
+    else if (0 == strncmp(data, "$PQWP3", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setXtra(SystemStatusPQWP3parser(buf, len).get());
+        cnt_p3++;
+    }
+    else if (0 == strncmp(data, "$PQWP4", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setEphemeris(SystemStatusPQWP4parser(buf, len).get());
+        cnt_p4++;
+    }
+    else if (0 == strncmp(data, "$PQWP5", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setSvHealth(SystemStatusPQWP5parser(buf, len).get());
+        cnt_p5++;
+    }
+    else if (0 == strncmp(data, "$PQWP6", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setPdr(SystemStatusPQWP6parser(buf, len).get());
+        cnt_p6++;
+    }
+    else if (0 == strncmp(data, "$PQWP7", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setNavData(SystemStatusPQWP7parser(buf, len).get());
+        cnt_p7++;
+    }
+    else if (0 == strncmp(data, "$PQWS1", SystemStatusNmeaBase::NMEA_MINSIZE)) {
+        ret = setPositionFailure(SystemStatusPQWS1parser(buf, len).get());
+        cnt_s1++;
+    }
+    else {
+        // do nothing
+    }
+    cnt++;
+    LOC_LOGV("setNmeaString: cnt=%d M:%d 1:%d 2:%d 3:%d 4:%d 5:%d 6:%d 7:%d S:%d",
+             cnt,
+             cnt_m1,
+             cnt_p1,
+             cnt_p2,
+             cnt_p3,
+             cnt_p4,
+             cnt_p5,
+             cnt_p6,
+             cnt_p7,
+             cnt_s1);
+
+    pthread_mutex_unlock(&mMutexSystemStatus);
+    return ret;
+}
+
+/******************************************************************************
+@brief      API to set report position data into internal buffer
+
+@param[In]  UlpLocation
+
+@return     true when successfully done
+******************************************************************************/
+bool SystemStatus::eventPosition(const UlpLocation& location,
+                                 const GpsLocationExtended& locationEx)
+{
+    SystemStatusLocation s(location, locationEx);
+    if (!mCache.mLocation.empty() && mCache.mLocation.back().equals(s)) {
+        mCache.mLocation.back().mUtcReported = s.mUtcReported;
+    }
+    else {
+        mCache.mLocation.push_back(s);
+        if (mCache.mLocation.size() > maxLocation) {
+            mCache.mLocation.erase(mCache.mLocation.begin());
+        }
+    }
+    LOC_LOGV("eventPosition - lat=%f lon=%f alt=%f speed=%f",
+             s.mLocation.gpsLocation.latitude,
+             s.mLocation.gpsLocation.longitude,
+             s.mLocation.gpsLocation.altitude,
+             s.mLocation.gpsLocation.speed);
+    return true;
+}
+
+/******************************************************************************
+@brief      API to get report data into a given buffer
+
+@param[In]  reference to report buffer
+@param[In]  bool flag to identify latest only or entire buffer
+
+@return     true when successfully done
+******************************************************************************/
+bool SystemStatus::getReport(SystemStatusReports& report, bool isLatestOnly) const
+{
+    pthread_mutex_lock(&mMutexSystemStatus);
+
+    if (isLatestOnly) {
+        // push back only the latest report and return it
+        report.mLocation.clear();
+        if (mCache.mLocation.size() >= 1) {
+            report.mLocation.push_back(mCache.mLocation.back());
+            report.mLocation.back().dump();
+        }
+
+        report.mTimeAndClock.clear();
+        if (mCache.mTimeAndClock.size() >= 1) {
+            report.mTimeAndClock.push_back(mCache.mTimeAndClock.back());
+            report.mTimeAndClock.back().dump();
+        }
+        report.mXoState.clear();
+        if (mCache.mXoState.size() >= 1) {
+            report.mXoState.push_back(mCache.mXoState.back());
+            report.mXoState.back().dump();
+        }
+        report.mRfAndParams.clear();
+        if (mCache.mRfAndParams.size() >= 1) {
+            report.mRfAndParams.push_back(mCache.mRfAndParams.back());
+            report.mRfAndParams.back().dump();
+        }
+        report.mErrRecovery.clear();
+        if (mCache.mErrRecovery.size() >= 1) {
+            report.mErrRecovery.push_back(mCache.mErrRecovery.back());
+            report.mErrRecovery.back().dump();
+        }
+
+        report.mInjectedPosition.clear();
+        if (mCache.mInjectedPosition.size() >= 1) {
+            report.mInjectedPosition.push_back(mCache.mInjectedPosition.back());
+            report.mInjectedPosition.back().dump();
+        }
+        report.mBestPosition.clear();
+        if (mCache.mBestPosition.size() >= 1) {
+            report.mBestPosition.push_back(mCache.mBestPosition.back());
+            report.mBestPosition.back().dump();
+        }
+        report.mXtra.clear();
+        if (mCache.mXtra.size() >= 1) {
+            report.mXtra.push_back(mCache.mXtra.back());
+            report.mXtra.back().dump();
+        }
+        report.mEphemeris.clear();
+        if (mCache.mEphemeris.size() >= 1) {
+            report.mEphemeris.push_back(mCache.mEphemeris.back());
+            report.mEphemeris.back().dump();
+        }
+        report.mSvHealth.clear();
+        if (mCache.mSvHealth.size() >= 1) {
+            report.mSvHealth.push_back(mCache.mSvHealth.back());
+            report.mSvHealth.back().dump();
+        }
+        report.mPdr.clear();
+        if (mCache.mPdr.size() >= 1) {
+            report.mPdr.push_back(mCache.mPdr.back());
+            report.mPdr.back().dump();
+        }
+        report.mNavData.clear();
+        if (mCache.mNavData.size() >= 1) {
+            report.mNavData.push_back(mCache.mNavData.back());
+            report.mNavData.back().dump();
+        }
+
+        report.mPositionFailure.clear();
+        if (mCache.mPositionFailure.size() >= 1) {
+            report.mPositionFailure.push_back(mCache.mPositionFailure.back());
+            report.mPositionFailure.back().dump();
+        }
+    }
+    else {
+        // copy entire reports and return them
+        report.mLocation.clear();
+
+        report.mTimeAndClock.clear();
+        report.mXoState.clear();
+        report.mRfAndParams.clear();
+        report.mErrRecovery.clear();
+
+        report.mInjectedPosition.clear();
+        report.mBestPosition.clear();
+        report.mXtra.clear();
+        report.mEphemeris.clear();
+        report.mSvHealth.clear();
+        report.mPdr.clear();
+        report.mNavData.clear();
+
+        report.mPositionFailure.clear();
+        report = mCache;
+    }
+
+    pthread_mutex_unlock(&mMutexSystemStatus);
+    return true;
+}
+
+} // namespace loc_core
+
diff --git a/sdm845/core/SystemStatus.h b/sdm845/core/SystemStatus.h
new file mode 100644
index 0000000..a3b38d3
--- /dev/null
+++ b/sdm845/core/SystemStatus.h
@@ -0,0 +1,349 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __SYSTEM_STATUS__
+#define __SYSTEM_STATUS__
+
+#include <stdint.h>
+#include <vector>
+#include <gps_extended_c.h>
+
+#define GPS_MIN  (1)   //1-32
+#define SBAS_MIN (33)
+#define GLO_MIN  (65)  //65-88
+#define QZSS_MIN (193) //193-197
+#define BDS_MIN  (201) //201-237
+#define GAL_MIN  (301) //301-336
+
+#define GPS_NUM  (32)
+#define SBAS_NUM (32)
+#define GLO_NUM  (24)
+#define QZSS_NUM (5)
+#define BDS_NUM  (37)
+#define GAL_NUM  (36)
+#define SV_ALL_NUM  (GPS_NUM+GLO_NUM+QZSS_NUM+BDS_NUM+GAL_NUM) //=134
+
+namespace loc_core
+{
+
+/******************************************************************************
+ SystemStatus report data structure
+******************************************************************************/
+class SystemStatusItemBase
+{
+public:
+    timespec mUtcTime;     // UTC timestamp when this info was last updated
+    timespec mUtcReported; // UTC timestamp when this info was reported
+
+    SystemStatusItemBase() {
+        timeval tv;
+        gettimeofday(&tv, NULL);
+        mUtcTime.tv_sec  = tv.tv_sec;
+        mUtcTime.tv_nsec = tv.tv_usec *1000ULL;
+        mUtcReported = mUtcTime;
+    };
+    virtual ~SystemStatusItemBase() { };
+    virtual void dump(void) { };
+};
+
+class SystemStatusLocation : public SystemStatusItemBase
+{
+public:
+    UlpLocation mLocation;
+    GpsLocationExtended mLocationEx;
+    SystemStatusLocation(const UlpLocation& location,
+                         const GpsLocationExtended& locationEx) :
+        mLocation(location),
+        mLocationEx(locationEx){ };
+    bool equals(SystemStatusLocation& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWM1;
+class SystemStatusTimeAndClock : public SystemStatusItemBase
+{
+public:
+    uint16_t mGpsWeek;
+    uint32_t mGpsTowMs;
+    uint8_t  mTimeValid;
+    uint8_t  mTimeSource;
+    int32_t  mTimeUnc;
+    int32_t  mClockFreqBias;
+    int32_t  mClockFreqBiasUnc;
+    int32_t  mLeapSeconds;
+    int32_t  mLeapSecUnc;
+    SystemStatusTimeAndClock(const SystemStatusPQWM1& nmea);
+    bool equals(SystemStatusTimeAndClock& peer);
+    void dump(void);
+};
+
+class SystemStatusXoState : public SystemStatusItemBase
+{
+public:
+    uint8_t  mXoState;
+    SystemStatusXoState(const SystemStatusPQWM1& nmea);
+    bool equals(SystemStatusXoState& peer);
+    void dump(void);
+};
+
+class SystemStatusRfAndParams : public SystemStatusItemBase
+{
+public:
+    int32_t  mPgaGain;
+    uint32_t mGpsBpAmpI;
+    uint32_t mGpsBpAmpQ;
+    uint32_t mAdcI;
+    uint32_t mAdcQ;
+    uint32_t mJammerGps;
+    uint32_t mJammerGlo;
+    uint32_t mJammerBds;
+    uint32_t mJammerGal;
+    double   mAgcGps;
+    double   mAgcGlo;
+    double   mAgcBds;
+    double   mAgcGal;
+    SystemStatusRfAndParams(const SystemStatusPQWM1& nmea);
+    bool equals(SystemStatusRfAndParams& peer);
+    void dump(void);
+};
+
+class SystemStatusErrRecovery : public SystemStatusItemBase
+{
+public:
+    uint32_t mRecErrorRecovery;
+    SystemStatusErrRecovery(const SystemStatusPQWM1& nmea);
+    bool equals(SystemStatusErrRecovery& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP1;
+class SystemStatusInjectedPosition : public SystemStatusItemBase
+{
+public:
+    uint8_t  mEpiValidity;
+    float    mEpiLat;
+    float    mEpiLon;
+    float    mEpiAlt;
+    float    mEpiHepe;
+    float    mEpiAltUnc;
+    uint8_t  mEpiSrc;
+    SystemStatusInjectedPosition(const SystemStatusPQWP1& nmea);
+    bool equals(SystemStatusInjectedPosition& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP2;
+class SystemStatusBestPosition : public SystemStatusItemBase
+{
+public:
+    float    mBestLat;
+    float    mBestLon;
+    float    mBestAlt;
+    float    mBestHepe;
+    float    mBestAltUnc;
+    SystemStatusBestPosition(const SystemStatusPQWP2& nmea);
+    bool equals(SystemStatusBestPosition& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP3;
+class SystemStatusXtra : public SystemStatusItemBase
+{
+public:
+    uint8_t   mXtraValidMask;
+    uint32_t  mGpsXtraAge;
+    uint32_t  mGloXtraAge;
+    uint32_t  mBdsXtraAge;
+    uint32_t  mGalXtraAge;
+    uint32_t  mQzssXtraAge;
+    uint32_t  mGpsXtraValid;
+    uint32_t  mGloXtraValid;
+    uint64_t  mBdsXtraValid;
+    uint64_t  mGalXtraValid;
+    uint8_t   mQzssXtraValid;
+    SystemStatusXtra(const SystemStatusPQWP3& nmea);
+    bool equals(SystemStatusXtra& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP4;
+class SystemStatusEphemeris : public SystemStatusItemBase
+{
+public:
+    uint32_t  mGpsEpheValid;
+    uint32_t  mGloEpheValid;
+    uint64_t  mBdsEpheValid;
+    uint64_t  mGalEpheValid;
+    uint8_t   mQzssEpheValid;
+    SystemStatusEphemeris(const SystemStatusPQWP4& nmea);
+    bool equals(SystemStatusEphemeris& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP5;
+class SystemStatusSvHealth : public SystemStatusItemBase
+{
+public:
+    uint32_t  mGpsUnknownMask;
+    uint32_t  mGloUnknownMask;
+    uint64_t  mBdsUnknownMask;
+    uint64_t  mGalUnknownMask;
+    uint8_t   mQzssUnknownMask;
+    uint32_t  mGpsGoodMask;
+    uint32_t  mGloGoodMask;
+    uint64_t  mBdsGoodMask;
+    uint64_t  mGalGoodMask;
+    uint8_t   mQzssGoodMask;
+    uint32_t  mGpsBadMask;
+    uint32_t  mGloBadMask;
+    uint64_t  mBdsBadMask;
+    uint64_t  mGalBadMask;
+    uint8_t   mQzssBadMask;
+    SystemStatusSvHealth(const SystemStatusPQWP5& nmea);
+    bool equals(SystemStatusSvHealth& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP6;
+class SystemStatusPdr : public SystemStatusItemBase
+{
+public:
+    uint32_t  mFixInfoMask;
+    SystemStatusPdr(const SystemStatusPQWP6& nmea);
+    bool equals(SystemStatusPdr& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWP7;
+struct SystemStatusNav
+{
+    GnssEphemerisType   mType;
+    GnssEphemerisSource mSource;
+    int32_t             mAgeSec;
+};
+
+class SystemStatusNavData : public SystemStatusItemBase
+{
+public:
+    SystemStatusNav mNav[SV_ALL_NUM];
+    SystemStatusNavData(const SystemStatusPQWP7& nmea);
+    bool equals(SystemStatusNavData& peer);
+    void dump(void);
+};
+
+class SystemStatusPQWS1;
+class SystemStatusPositionFailure : public SystemStatusItemBase
+{
+public:
+    uint32_t  mFixInfoMask;
+    uint32_t  mHepeLimit;
+    SystemStatusPositionFailure(const SystemStatusPQWS1& nmea);
+    bool equals(SystemStatusPositionFailure& peer);
+    void dump(void);
+};
+
+/******************************************************************************
+ SystemStatusReports
+******************************************************************************/
+class SystemStatusReports
+{
+public:
+    std::vector<SystemStatusLocation>         mLocation;
+
+    std::vector<SystemStatusTimeAndClock>     mTimeAndClock;
+    std::vector<SystemStatusXoState>          mXoState;
+    std::vector<SystemStatusRfAndParams>      mRfAndParams;
+    std::vector<SystemStatusErrRecovery>      mErrRecovery;
+
+    std::vector<SystemStatusInjectedPosition> mInjectedPosition;
+    std::vector<SystemStatusBestPosition>     mBestPosition;
+    std::vector<SystemStatusXtra>             mXtra;
+    std::vector<SystemStatusEphemeris>        mEphemeris;
+    std::vector<SystemStatusSvHealth>         mSvHealth;
+    std::vector<SystemStatusPdr>              mPdr;
+    std::vector<SystemStatusNavData>          mNavData;
+
+    std::vector<SystemStatusPositionFailure>  mPositionFailure;
+};
+
+/******************************************************************************
+ SystemStatus
+******************************************************************************/
+class SystemStatus
+{
+    static pthread_mutex_t mMutexSystemStatus;
+
+    static const uint32_t                     maxLocation = 5;
+
+    static const uint32_t                     maxTimeAndClock = 5;
+    static const uint32_t                     maxXoState = 5;
+    static const uint32_t                     maxRfAndParams = 5;
+    static const uint32_t                     maxErrRecovery = 5;
+
+    static const uint32_t                     maxInjectedPosition = 5;
+    static const uint32_t                     maxBestPosition = 5;
+    static const uint32_t                     maxXtra = 5;
+    static const uint32_t                     maxEphemeris = 5;
+    static const uint32_t                     maxSvHealth = 5;
+    static const uint32_t                     maxPdr = 5;
+    static const uint32_t                     maxNavData = 5;
+
+    static const uint32_t                     maxPositionFailure = 5;
+
+    SystemStatusReports mCache;
+
+    bool setLocation(const UlpLocation& location);
+
+    bool setTimeAndCLock(const SystemStatusPQWM1& nmea);
+    bool setXoState(const SystemStatusPQWM1& nmea);
+    bool setRfAndParams(const SystemStatusPQWM1& nmea);
+    bool setErrRecovery(const SystemStatusPQWM1& nmea);
+
+    bool setInjectedPosition(const SystemStatusPQWP1& nmea);
+    bool setBestPosition(const SystemStatusPQWP2& nmea);
+    bool setXtra(const SystemStatusPQWP3& nmea);
+    bool setEphemeris(const SystemStatusPQWP4& nmea);
+    bool setSvHealth(const SystemStatusPQWP5& nmea);
+    bool setPdr(const SystemStatusPQWP6& nmea);
+    bool setNavData(const SystemStatusPQWP7& nmea);
+
+    bool setPositionFailure(const SystemStatusPQWS1& nmea);
+
+public:
+    SystemStatus();
+    ~SystemStatus() { }
+
+    bool eventPosition(const UlpLocation& location,const GpsLocationExtended& locationEx);
+    bool setNmeaString(const char *data, uint32_t len);
+    bool getReport(SystemStatusReports& reports, bool isLatestonly = false) const;
+};
+
+} // namespace loc_core
+
+#endif //__SYSTEM_STATUS__
+
diff --git a/sdm845/core/UlpProxyBase.h b/sdm845/core/UlpProxyBase.h
new file mode 100644
index 0000000..8863b66
--- /dev/null
+++ b/sdm845/core/UlpProxyBase.h
@@ -0,0 +1,124 @@
+/* Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef ULP_PROXY_BASE_H
+#define ULP_PROXY_BASE_H
+
+#include <gps_extended.h>
+#include <LocationAPI.h>
+
+namespace loc_core {
+
+class LocAdapterBase;
+
+class UlpProxyBase {
+public:
+    LocPosMode mPosMode;
+    bool mFixSet;
+    inline UlpProxyBase() {
+        mPosMode.mode = LOC_POSITION_MODE_INVALID;
+        mFixSet = false;
+    }
+    inline virtual ~UlpProxyBase() {}
+    inline virtual bool sendStartFix() { mFixSet = true; return false; }
+    inline virtual bool sendStopFix() { mFixSet = false; return false; }
+    inline virtual bool sendFixMode(LocPosMode &params) {
+        mPosMode = params;
+        return false;
+    }
+
+    inline virtual bool reportPosition(const UlpLocation &location,
+                                       const GpsLocationExtended &locationExtended,
+                                       enum loc_sess_status status,
+                                       LocPosTechMask loc_technology_mask) {
+        (void)location;
+        (void)locationExtended;
+        (void)status;
+        (void)loc_technology_mask;
+        return false;
+    }
+    inline virtual bool reportSv(const GnssSvNotification& svNotify) {
+        (void)svNotify;
+        return false;
+    }
+    inline virtual bool reportSvMeasurement(GnssSvMeasurementSet &svMeasurementSet) {
+        (void)svMeasurementSet;
+        return false;
+    }
+
+    inline virtual bool reportSvPolynomial(GnssSvPolynomial &svPolynomial)
+    {
+       (void)svPolynomial;
+       return false;
+    }
+    inline virtual bool reportStatus(LocGpsStatusValue status) {
+
+        (void)status;
+        return false;
+    }
+    inline virtual void setAdapter(LocAdapterBase* adapter) {
+
+        (void)adapter;
+    }
+    inline virtual void setCapabilities(unsigned long capabilities) {
+
+        (void)capabilities;
+    }
+    inline virtual bool reportBatchingSession(const LocationOptions& options, bool active)
+    {
+         (void)options;
+         (void)active;
+         return false;
+    }
+    inline virtual bool reportPositions(const UlpLocation* ulpLocations,
+                                        const GpsLocationExtended* extendedLocations,
+                                        const uint32_t* techMasks,
+                                        const size_t count)
+    {
+        (void)ulpLocations;
+        (void)extendedLocations;
+        (void)techMasks;
+        (void)count;
+        return false;
+    }
+    inline virtual bool reportDeleteAidingData(LocGpsAidingData aidingData)
+    {
+       (void)aidingData;
+       return false;
+    }
+    inline virtual bool reportNmea(const char* nmea, int length)
+    {
+        (void)nmea;
+        (void)length;
+        return false;
+    }
+};
+
+} // namespace loc_core
+
+#endif // ULP_PROXY_BASE_H
diff --git a/sdm845/core/loc_core_log.cpp b/sdm845/core/loc_core_log.cpp
new file mode 100644
index 0000000..ae5948d
--- /dev/null
+++ b/sdm845/core/loc_core_log.cpp
@@ -0,0 +1,243 @@
+/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_core_log"
+
+#include <loc_log.h>
+#include <loc_core_log.h>
+#include <platform_lib_includes.h>
+
+void LocPosMode::logv() const
+{
+    LOC_LOGV ("Position mode: %s\n  Position recurrence: %s\n  "
+              "min interval: %d\n  preferred accuracy: %d\n  "
+              "preferred time: %d\n  credentials: %s  provider: %s",
+              loc_get_position_mode_name(mode),
+              loc_get_position_recurrence_name(recurrence),
+              min_interval,
+              preferred_accuracy,
+              preferred_time,
+              credentials,
+              provider);
+}
+
+/* GPS status names */
+static const loc_name_val_s_type gps_status_name[] =
+{
+    NAME_VAL( LOC_GPS_STATUS_NONE ),
+    NAME_VAL( LOC_GPS_STATUS_SESSION_BEGIN ),
+    NAME_VAL( LOC_GPS_STATUS_SESSION_END ),
+    NAME_VAL( LOC_GPS_STATUS_ENGINE_ON ),
+    NAME_VAL( LOC_GPS_STATUS_ENGINE_OFF ),
+};
+static const int gps_status_num = sizeof(gps_status_name) / sizeof(loc_name_val_s_type);
+
+/* Find Android GPS status name */
+const char* loc_get_gps_status_name(LocGpsStatusValue gps_status)
+{
+   return loc_get_name_from_val(gps_status_name, gps_status_num,
+         (long) gps_status);
+}
+
+
+
+static const loc_name_val_s_type loc_eng_position_modes[] =
+{
+    NAME_VAL( LOC_POSITION_MODE_STANDALONE ),
+    NAME_VAL( LOC_POSITION_MODE_MS_BASED ),
+    NAME_VAL( LOC_POSITION_MODE_MS_ASSISTED ),
+    NAME_VAL( LOC_POSITION_MODE_RESERVED_1 ),
+    NAME_VAL( LOC_POSITION_MODE_RESERVED_2 ),
+    NAME_VAL( LOC_POSITION_MODE_RESERVED_3 ),
+    NAME_VAL( LOC_POSITION_MODE_RESERVED_4 ),
+    NAME_VAL( LOC_POSITION_MODE_RESERVED_5 )
+};
+static const int loc_eng_position_mode_num = sizeof(loc_eng_position_modes) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_position_mode_name(LocGpsPositionMode mode)
+{
+    return loc_get_name_from_val(loc_eng_position_modes, loc_eng_position_mode_num, (long) mode);
+}
+
+
+
+static const loc_name_val_s_type loc_eng_position_recurrences[] =
+{
+    NAME_VAL( LOC_GPS_POSITION_RECURRENCE_PERIODIC ),
+    NAME_VAL( LOC_GPS_POSITION_RECURRENCE_SINGLE )
+};
+static const int loc_eng_position_recurrence_num = sizeof(loc_eng_position_recurrences) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_position_recurrence_name(LocGpsPositionRecurrence recur)
+{
+    return loc_get_name_from_val(loc_eng_position_recurrences, loc_eng_position_recurrence_num, (long) recur);
+}
+
+
+
+static const loc_name_val_s_type loc_eng_aiding_data_bits[] =
+{
+    NAME_VAL( LOC_GPS_DELETE_EPHEMERIS ),
+    NAME_VAL( LOC_GPS_DELETE_ALMANAC ),
+    NAME_VAL( LOC_GPS_DELETE_POSITION ),
+    NAME_VAL( LOC_GPS_DELETE_TIME ),
+    NAME_VAL( LOC_GPS_DELETE_IONO ),
+    NAME_VAL( LOC_GPS_DELETE_UTC ),
+    NAME_VAL( LOC_GPS_DELETE_HEALTH ),
+    NAME_VAL( LOC_GPS_DELETE_SVDIR ),
+    NAME_VAL( LOC_GPS_DELETE_SVSTEER ),
+    NAME_VAL( LOC_GPS_DELETE_SADATA ),
+    NAME_VAL( LOC_GPS_DELETE_RTI ),
+    NAME_VAL( LOC_GPS_DELETE_CELLDB_INFO ),
+    NAME_VAL( LOC_GPS_DELETE_ALL)
+};
+static const int loc_eng_aiding_data_bit_num = sizeof(loc_eng_aiding_data_bits) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_aiding_data_mask_names(LocGpsAidingData data)
+{
+    return NULL;
+}
+
+
+static const loc_name_val_s_type loc_eng_agps_types[] =
+{
+    NAME_VAL( LOC_AGPS_TYPE_INVALID ),
+    NAME_VAL( LOC_AGPS_TYPE_ANY ),
+    NAME_VAL( LOC_AGPS_TYPE_SUPL ),
+    NAME_VAL( LOC_AGPS_TYPE_C2K ),
+    NAME_VAL( LOC_AGPS_TYPE_WWAN_ANY )
+};
+static const int loc_eng_agps_type_num = sizeof(loc_eng_agps_types) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_agps_type_name(LocAGpsType type)
+{
+    return loc_get_name_from_val(loc_eng_agps_types, loc_eng_agps_type_num, (long) type);
+}
+
+
+static const loc_name_val_s_type loc_eng_ni_types[] =
+{
+    NAME_VAL( LOC_GPS_NI_TYPE_VOICE ),
+    NAME_VAL( LOC_GPS_NI_TYPE_UMTS_SUPL ),
+    NAME_VAL( LOC_GPS_NI_TYPE_UMTS_CTRL_PLANE ),
+    NAME_VAL( LOC_GPS_NI_TYPE_EMERGENCY_SUPL )
+};
+static const int loc_eng_ni_type_num = sizeof(loc_eng_ni_types) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_ni_type_name(LocGpsNiType type)
+{
+    return loc_get_name_from_val(loc_eng_ni_types, loc_eng_ni_type_num, (long) type);
+}
+
+
+static const loc_name_val_s_type loc_eng_ni_responses[] =
+{
+    NAME_VAL( LOC_GPS_NI_RESPONSE_ACCEPT ),
+    NAME_VAL( LOC_GPS_NI_RESPONSE_DENY ),
+    NAME_VAL( LOC_GPS_NI_RESPONSE_DENY )
+};
+static const int loc_eng_ni_reponse_num = sizeof(loc_eng_ni_responses) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_ni_response_name(LocGpsUserResponseType response)
+{
+    return loc_get_name_from_val(loc_eng_ni_responses, loc_eng_ni_reponse_num, (long) response);
+}
+
+
+static const loc_name_val_s_type loc_eng_ni_encodings[] =
+{
+    NAME_VAL( LOC_GPS_ENC_NONE ),
+    NAME_VAL( LOC_GPS_ENC_SUPL_GSM_DEFAULT ),
+    NAME_VAL( LOC_GPS_ENC_SUPL_UTF8 ),
+    NAME_VAL( LOC_GPS_ENC_SUPL_UCS2 ),
+    NAME_VAL( LOC_GPS_ENC_UNKNOWN )
+};
+static const int loc_eng_ni_encoding_num = sizeof(loc_eng_ni_encodings) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_ni_encoding_name(LocGpsNiEncodingType encoding)
+{
+    return loc_get_name_from_val(loc_eng_ni_encodings, loc_eng_ni_encoding_num, (long) encoding);
+}
+
+static const loc_name_val_s_type loc_eng_agps_bears[] =
+{
+    NAME_VAL( AGPS_APN_BEARER_INVALID ),
+    NAME_VAL( AGPS_APN_BEARER_IPV4 ),
+    NAME_VAL( AGPS_APN_BEARER_IPV6 ),
+    NAME_VAL( AGPS_APN_BEARER_IPV4V6 )
+};
+static const int loc_eng_agps_bears_num = sizeof(loc_eng_agps_bears) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_agps_bear_name(AGpsBearerType bearer)
+{
+    return loc_get_name_from_val(loc_eng_agps_bears, loc_eng_agps_bears_num, (long) bearer);
+}
+
+static const loc_name_val_s_type loc_eng_server_types[] =
+{
+    NAME_VAL( LOC_AGPS_CDMA_PDE_SERVER ),
+    NAME_VAL( LOC_AGPS_CUSTOM_PDE_SERVER ),
+    NAME_VAL( LOC_AGPS_MPC_SERVER ),
+    NAME_VAL( LOC_AGPS_SUPL_SERVER )
+};
+static const int loc_eng_server_types_num = sizeof(loc_eng_server_types) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_server_type_name(LocServerType type)
+{
+    return loc_get_name_from_val(loc_eng_server_types, loc_eng_server_types_num, (long) type);
+}
+
+static const loc_name_val_s_type loc_eng_position_sess_status_types[] =
+{
+    NAME_VAL( LOC_SESS_SUCCESS ),
+    NAME_VAL( LOC_SESS_INTERMEDIATE ),
+    NAME_VAL( LOC_SESS_FAILURE )
+};
+static const int loc_eng_position_sess_status_num = sizeof(loc_eng_position_sess_status_types) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_position_sess_status_name(enum loc_sess_status status)
+{
+    return loc_get_name_from_val(loc_eng_position_sess_status_types, loc_eng_position_sess_status_num, (long) status);
+}
+
+static const loc_name_val_s_type loc_eng_agps_status_names[] =
+{
+    NAME_VAL( LOC_GPS_REQUEST_AGPS_DATA_CONN ),
+    NAME_VAL( LOC_GPS_RELEASE_AGPS_DATA_CONN ),
+    NAME_VAL( LOC_GPS_AGPS_DATA_CONNECTED ),
+    NAME_VAL( LOC_GPS_AGPS_DATA_CONN_DONE ),
+    NAME_VAL( LOC_GPS_AGPS_DATA_CONN_FAILED )
+};
+static const int loc_eng_agps_status_num = sizeof(loc_eng_agps_status_names) / sizeof(loc_name_val_s_type);
+
+const char* loc_get_agps_status_name(LocAGpsStatusValue status)
+{
+    return loc_get_name_from_val(loc_eng_agps_status_names, loc_eng_agps_status_num, (long) status);
+}
diff --git a/sdm845/core/loc_core_log.h b/sdm845/core/loc_core_log.h
new file mode 100644
index 0000000..2beb687
--- /dev/null
+++ b/sdm845/core/loc_core_log.h
@@ -0,0 +1,58 @@
+/* Copyright (c) 2011-2013, 2016-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_CORE_LOG_H
+#define LOC_CORE_LOG_H
+
+#include <ctype.h>
+#include <gps_extended.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+const char* loc_get_gps_status_name(LocGpsStatusValue gps_status);
+const char* loc_get_position_mode_name(LocGpsPositionMode mode);
+const char* loc_get_position_recurrence_name(LocGpsPositionRecurrence recur);
+const char* loc_get_aiding_data_mask_names(LocGpsAidingData data);
+const char* loc_get_agps_type_name(LocAGpsType type);
+const char* loc_get_ni_type_name(LocGpsNiType type);
+const char* loc_get_ni_response_name(LocGpsUserResponseType response);
+const char* loc_get_ni_encoding_name(LocGpsNiEncodingType encoding);
+const char* loc_get_agps_bear_name(AGpsBearerType bear);
+const char* loc_get_server_type_name(LocServerType type);
+const char* loc_get_position_sess_status_name(enum loc_sess_status status);
+const char* loc_get_agps_status_name(LocAGpsStatusValue status);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LOC_CORE_LOG_H */
diff --git a/sdm845/etc/Android.mk b/sdm845/etc/Android.mk
new file mode 100644
index 0000000..d9eb0e1
--- /dev/null
+++ b/sdm845/etc/Android.mk
@@ -0,0 +1,12 @@
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := gps.conf
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_PATH  := $(TARGET_OUT_VENDOR)/etc/
+LOCAL_SRC_FILES := gps.conf
+
+include $(BUILD_PREBUILT)
+
diff --git a/sdm845/etc/gps.conf b/sdm845/etc/gps.conf
new file mode 100644
index 0000000..3ea9aab
--- /dev/null
+++ b/sdm845/etc/gps.conf
@@ -0,0 +1,207 @@
+#Uncommenting these urls would only enable
+#the power up auto injection and force injection(test case).
+#XTRA_SERVER_1=http://xtrapath1.izatcloud.net/xtra2.bin
+#XTRA_SERVER_2=http://xtrapath2.izatcloud.net/xtra2.bin
+#XTRA_SERVER_3=http://xtrapath3.izatcloud.net/xtra2.bin
+
+#Version check for XTRA
+#DISABLE = 0
+#AUTO    = 1
+#XTRA2   = 2
+#XTRA3   = 3
+XTRA_VERSION_CHECK=0
+
+# Error Estimate
+# _SET = 1
+# _CLEAR = 0
+ERR_ESTIMATE=0
+
+#NTP server
+NTP_SERVER=time.izatcloud.net
+
+#XTRA CA path
+XTRA_CA_PATH=/system/etc/security/cacerts
+
+# DEBUG LEVELS: 0 - none, 1 - Error, 2 - Warning, 3 - Info
+#               4 - Debug, 5 - Verbose
+# If DEBUG_LEVEL is commented, Android's logging levels will be used
+DEBUG_LEVEL = 3
+
+# Intermediate position report, 1=enable, 0=disable
+INTERMEDIATE_POS=0
+
+# Below bit mask configures how GPS functionalities
+# should be locked when user turns off GPS on Settings
+# Set bit 0x1 if MO GPS functionalities are to be locked
+# Set bit 0x2 if NI GPS functionalities are to be locked
+# default - non is locked for backward compatibility
+#GPS_LOCK = 0
+
+# supl version 1.0
+SUPL_VER=0x10000
+
+# Emergency SUPL, 1=enable, 0=disable
+#SUPL_ES=0
+
+#Choose PDN for Emergency SUPL
+#1 - Use emergency PDN
+#0 - Use regular SUPL PDN for Emergency SUPL
+#USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL=0
+
+#SUPL_MODE is a bit mask set in config.xml per carrier by default.
+#If it is uncommented here, this value will overwrite the value from
+#config.xml.
+#MSA=0X2
+#MSB=0X1
+#SUPL_MODE=
+
+# GPS Capabilities bit mask
+# SCHEDULING = 0x01
+# MSB = 0x02
+# MSA = 0x04
+# ON_DEMAND_TIME = 0x10
+# GEOFENCE = 0x20
+# default = ON_DEMAND_TIME | MSA | MSB | SCHEDULING | GEOFENCE
+CAPABILITIES=0x37
+
+# Accuracy threshold for intermediate positions
+# less accurate positions are ignored, 0 for passing all positions
+# ACCURACY_THRES=5000
+
+################################
+##### AGPS server settings #####
+################################
+
+# FOR SUPL SUPPORT, set the following
+# SUPL_HOST=supl.host.com or IP
+# SUPL_PORT=1234
+
+# FOR C2K PDE SUPPORT, set the following
+# C2K_HOST=c2k.pde.com or IP
+# C2K_PORT=1234
+
+# Bitmask of slots that are available
+# for write/install to, where 1s indicate writable,
+# and the default value is 0 where no slots
+# are writable. For example, AGPS_CERT_WRITABLE_MASK
+# of b1000001010 makes 3 slots available
+# and the remaining 7 slots unwritable.
+#AGPS_CERT_WRITABLE_MASK=0
+
+####################################
+#  LTE Positioning Profile Settings
+####################################
+# 0: Enable RRLP on LTE(Default)
+# 1: Enable LPP_User_Plane on LTE
+# 2: Enable LPP_Control_Plane
+# 3: Enable both LPP_User_Plane and LPP_Control_Plane
+LPP_PROFILE = 2
+
+################################
+# EXTRA SETTINGS
+################################
+# NMEA provider (1=Modem Processor, 0=Application Processor)
+NMEA_PROVIDER=0
+# Mark if it is a SGLTE target (1=SGLTE, 0=nonSGLTE)
+SGLTE_TARGET=0
+
+##################################################
+# Select Positioning Protocol on A-GLONASS system
+##################################################
+# 0x1: RRC CPlane
+# 0x2: RRLP UPlane
+# 0x4: LLP Uplane
+A_GLONASS_POS_PROTOCOL_SELECT = 0
+
+##################################################
+# Select technology for LPPe Control Plane
+##################################################
+# 0x1: DBH for LPPe CP
+# 0x2: WLAN AP Measurements for LPPe CP
+# 0x4: SRN AP measurement for CP
+# 0x8: Sensor Barometer Measurement LPPe CP
+LPPE_CP_TECHNOLOGY = 4
+
+##################################################
+# Select technology for LPPe User Plane
+##################################################
+# 0x1: DBH for LPPe UP
+# 0x2: WLAN AP Measurements for LPPe UP
+# 0x4: SRN AP measurement for UP
+# 0x8: Sensor Barometer Measurement LPPe UP
+LPPE_UP_TECHNOLOGY = 4
+
+##################################################
+# AGPS_CONFIG_INJECT
+##################################################
+# enable/disable injection of AGPS configurations:
+#     SUPL_VER
+#     SUPL_HOST
+#     SUPL_PORT
+#     C2K_HOST
+#     C2K_PORT
+#     LPP_PROFILE
+#     A_GLONASS_POS_PROTOCOL_SELECT
+# 0: disable
+# 1: enable
+AGPS_CONFIG_INJECT = 1
+
+##################################################
+# GNSS settings for automotive use cases
+# Configurations in following section are
+# specific to automotive use cases, others
+# please do not change, keep the default values
+##################################################
+
+# AP Coarse Timestamp Uncertainty
+##################################################
+# default : 10
+# AP time stamp uncertainty, until GNSS receiver
+# is able to acquire better timing information
+AP_TIMESTAMP_UNCERTAINTY = 10
+
+##################################################
+# QDR engine availability status
+##################################################
+# 0 : NO QDR (default)
+# 1 : QDR enabled
+# This settings enables QDR Configuration for
+# automotive use case, if enabled then
+# DR_AP_Service needs to be enabled in izat.conf
+#EXTERNAL_DR_ENABLED = 0
+
+#####################################
+# DR_SYNC Pulse Availability
+#####################################
+# 0 : DR_SYNC pulse not available (default)
+# 1 : DR_SYNC pulse available
+# This configuration enables the driver to make use
+# of PPS events generated by DR_SYNC pulse
+# Standard Linux PPS driver needs to be enabled
+DR_SYNC_ENABLED = 0
+
+#####################################
+# PPS Device name
+#####################################
+PPS_DEVICENAME = /dev/pps0
+
+#####################################
+# AP Clock Accuracy
+#####################################
+# Quality of APPS processor clock (in PPM).
+# Value specified is used for calculation of
+# APPS time stamp uncertainty
+AP_CLOCK_PPM = 100
+
+#####################################
+# MAX ms difference to detect missing pulse
+#####################################
+# Specifies time threshold in ms to validate any missing PPS pulses
+MISSING_PULSE_TIME_DELTA = 900
+
+#####################################
+# Propagation time uncertainty
+#####################################
+# This settings enables time uncertainty propagation
+# logic incase of missing PPS pulse
+PROPAGATION_TIME_UNCERTAINTY = 1
diff --git a/sdm845/gnss/Agps.cpp b/sdm845/gnss/Agps.cpp
new file mode 100644
index 0000000..aacd9da
--- /dev/null
+++ b/sdm845/gnss/Agps.cpp
@@ -0,0 +1,963 @@
+/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_TAG "LocSvc_Agps"
+
+#include <Agps.h>
+#include <platform_lib_includes.h>
+#include <ContextBase.h>
+#include <loc_timer.h>
+
+/* --------------------------------------------------------------------
+ *   AGPS State Machine Methods
+ * -------------------------------------------------------------------*/
+void AgpsStateMachine::processAgpsEvent(AgpsEvent event){
+
+    LOC_LOGD("processAgpsEvent(): SM %p, Event %d, State %d",
+               this, event, mState);
+
+    switch (event){
+
+        case AGPS_EVENT_SUBSCRIBE:
+            processAgpsEventSubscribe();
+            break;
+
+        case AGPS_EVENT_UNSUBSCRIBE:
+            processAgpsEventUnsubscribe();
+            break;
+
+        case AGPS_EVENT_GRANTED:
+            processAgpsEventGranted();
+            break;
+
+        case AGPS_EVENT_RELEASED:
+            processAgpsEventReleased();
+            break;
+
+        case AGPS_EVENT_DENIED:
+            processAgpsEventDenied();
+            break;
+
+        default:
+            LOC_LOGE("Invalid Loc Agps Event");
+    }
+}
+
+void AgpsStateMachine::processAgpsEventSubscribe(){
+
+    switch (mState){
+
+        case AGPS_STATE_RELEASED:
+            /* Add subscriber to list
+             * No notifications until we get RSRC_GRANTED */
+            addSubscriber(mCurrentSubscriber);
+
+            /* Send data request
+             * The if condition below is added so that if the data call setup
+             * fails for DS State Machine, we want to retry in released state.
+             * for Agps State Machine, sendRsrcRequest() will always return
+             * success. */
+            if(requestOrReleaseDataConn(true) == 0){
+                // If data request successful, move to pending state
+                transitionState(AGPS_STATE_PENDING);
+            }
+            break;
+
+        case AGPS_STATE_PENDING:
+            /* Already requested for data connection,
+             * do nothing until we get RSRC_GRANTED event;
+             * Just add this subscriber to the list, for notifications */
+            addSubscriber(mCurrentSubscriber);
+            break;
+
+        case AGPS_STATE_ACQUIRED:
+            /* We already have the data connection setup,
+             * Notify current subscriber with GRANTED event,
+             * And add it to the subscriber list for further notifications. */
+            notifyEventToSubscriber(AGPS_EVENT_GRANTED, mCurrentSubscriber, false);
+            addSubscriber(mCurrentSubscriber);
+            break;
+
+        case AGPS_STATE_RELEASING:
+            addSubscriber(mCurrentSubscriber);
+            break;
+
+        default:
+            LOC_LOGE("Invalid state: %d", mState);
+    }
+}
+
+void AgpsStateMachine::processAgpsEventUnsubscribe(){
+
+    switch (mState){
+
+        case AGPS_STATE_RELEASED:
+            notifyEventToSubscriber(
+                    AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, false);
+            break;
+
+        case AGPS_STATE_PENDING:
+        case AGPS_STATE_ACQUIRED:
+            /* If the subscriber wishes to wait for connection close,
+             * before being removed from list, move to inactive state
+             * and notify */
+            if(mCurrentSubscriber->mWaitForCloseComplete){
+                mCurrentSubscriber->mIsInactive = true;
+                notifyEventToSubscriber(
+                        AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, false);
+            }
+            else{
+                /* Notify only current subscriber and then delete it from
+                 * subscriberList */
+                notifyEventToSubscriber(
+                        AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, true);
+            }
+
+            /* If no subscribers in list, release data connection */
+            if(mSubscriberList.empty()){
+                transitionState(AGPS_STATE_RELEASED);
+                requestOrReleaseDataConn(false);
+            }
+            /* Some subscribers in list, but all inactive;
+             * Release data connection */
+            else if(!anyActiveSubscribers()){
+                transitionState(AGPS_STATE_RELEASING);
+                requestOrReleaseDataConn(false);
+            }
+            break;
+
+        case AGPS_STATE_RELEASING:
+            /* If the subscriber wishes to wait for connection close,
+             * before being removed from list, move to inactive state
+             * and notify */
+            if(mCurrentSubscriber->mWaitForCloseComplete){
+                mCurrentSubscriber->mIsInactive = true;
+                notifyEventToSubscriber(
+                        AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, false);
+            }
+            else{
+                /* Notify only current subscriber and then delete it from
+                 * subscriberList */
+                notifyEventToSubscriber(
+                        AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, true);
+            }
+
+            /* If no subscribers in list, just move the state.
+             * Request for releasing data connection should already have been
+             * sent */
+            if(mSubscriberList.empty()){
+                transitionState(AGPS_STATE_RELEASED);
+            }
+            break;
+
+        default:
+            LOC_LOGE("Invalid state: %d", mState);
+    }
+}
+
+void AgpsStateMachine::processAgpsEventGranted(){
+
+    switch (mState){
+
+        case AGPS_STATE_RELEASED:
+        case AGPS_STATE_ACQUIRED:
+        case AGPS_STATE_RELEASING:
+            LOC_LOGE("Unexpected event GRANTED in state %d", mState);
+            break;
+
+        case AGPS_STATE_PENDING:
+            // Move to acquired state
+            transitionState(AGPS_STATE_ACQUIRED);
+            notifyAllSubscribers(
+                    AGPS_EVENT_GRANTED, false,
+                    AGPS_NOTIFICATION_TYPE_FOR_ACTIVE_SUBSCRIBERS);
+            break;
+
+        default:
+            LOC_LOGE("Invalid state: %d", mState);
+    }
+}
+
+void AgpsStateMachine::processAgpsEventReleased(){
+
+    switch (mState){
+
+        case AGPS_STATE_RELEASED:
+            LOC_LOGE("Unexpected event RELEASED in state %d", mState);
+            break;
+
+        case AGPS_STATE_ACQUIRED:
+            /* Force release received */
+            LOC_LOGW("Force RELEASED event in ACQUIRED state");
+            transitionState(AGPS_STATE_RELEASED);
+            notifyAllSubscribers(
+                    AGPS_EVENT_RELEASED, true,
+                    AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS);
+            break;
+
+        case AGPS_STATE_RELEASING:
+            /* Notify all inactive subscribers about the event */
+            notifyAllSubscribers(
+                    AGPS_EVENT_RELEASED, true,
+                    AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS);
+
+            /* If we have active subscribers now, they must be waiting for
+             * data conn setup */
+            if(anyActiveSubscribers()){
+                transitionState(AGPS_STATE_PENDING);
+                requestOrReleaseDataConn(true);
+            }
+            /* No active subscribers, move to released state */
+            else{
+                transitionState(AGPS_STATE_RELEASED);
+            }
+            break;
+
+        case AGPS_STATE_PENDING:
+            /* NOOP */
+            break;
+
+        default:
+            LOC_LOGE("Invalid state: %d", mState);
+    }
+}
+
+void AgpsStateMachine::processAgpsEventDenied(){
+
+    switch (mState){
+
+        case AGPS_STATE_RELEASED:
+            LOC_LOGE("Unexpected event DENIED in state %d", mState);
+            break;
+
+        case AGPS_STATE_ACQUIRED:
+            /* NOOP */
+            break;
+
+        case AGPS_STATE_RELEASING:
+            /* Notify all inactive subscribers about the event */
+            notifyAllSubscribers(
+                    AGPS_EVENT_RELEASED, true,
+                    AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS);
+
+            /* If we have active subscribers now, they must be waiting for
+             * data conn setup */
+            if(anyActiveSubscribers()){
+                transitionState(AGPS_STATE_PENDING);
+                requestOrReleaseDataConn(true);
+            }
+            /* No active subscribers, move to released state */
+            else{
+                transitionState(AGPS_STATE_RELEASED);
+            }
+            break;
+
+        case AGPS_STATE_PENDING:
+            transitionState(AGPS_STATE_RELEASED);
+            notifyAllSubscribers(
+                    AGPS_EVENT_DENIED, true,
+                    AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS);
+            break;
+
+        default:
+            LOC_LOGE("Invalid state: %d", mState);
+    }
+}
+
+/* Request or Release data connection
+ * bool request :
+ *      true  = Request data connection
+ *      false = Release data connection */
+int AgpsStateMachine::requestOrReleaseDataConn(bool request){
+
+    AgpsFrameworkInterface::AGnssStatusIpV4 nifRequest;
+    memset(&nifRequest, 0, sizeof(nifRequest));
+
+    nifRequest.type = (AgpsFrameworkInterface::AGnssType)mAgpsType;
+
+    if(request){
+        LOC_LOGD("AGPS Data Conn Request");
+        nifRequest.status = (AgpsFrameworkInterface::AGnssStatusValue)
+                                LOC_GPS_REQUEST_AGPS_DATA_CONN;
+    }
+    else{
+        LOC_LOGD("AGPS Data Conn Release");
+        nifRequest.status = (AgpsFrameworkInterface::AGnssStatusValue)
+                                LOC_GPS_RELEASE_AGPS_DATA_CONN;
+    }
+
+    mAgpsManager->mFrameworkStatusV4Cb(nifRequest);
+    return 0;
+}
+
+void AgpsStateMachine::notifyAllSubscribers(
+        AgpsEvent event, bool deleteSubscriberPostNotify,
+        AgpsNotificationType notificationType){
+
+    LOC_LOGD("notifyAllSubscribers(): "
+            "SM %p, Event %d Delete %d Notification Type %d",
+            this, event, deleteSubscriberPostNotify, notificationType);
+
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    while ( it != mSubscriberList.end() ){
+
+        AgpsSubscriber* subscriber = *it;
+
+        if(notificationType == AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS ||
+                (notificationType == AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS &&
+                        subscriber->mIsInactive) ||
+                (notificationType == AGPS_NOTIFICATION_TYPE_FOR_ACTIVE_SUBSCRIBERS &&
+                        !subscriber->mIsInactive)) {
+
+            /* Deleting via this call would require another traversal
+             * through subscriber list, inefficient; hence pass in false*/
+            notifyEventToSubscriber(event, subscriber, false);
+
+            if(deleteSubscriberPostNotify){
+                it = mSubscriberList.erase(it);
+                delete subscriber;
+            } else{
+                it++;
+            }
+        } else{
+            it++;
+        }
+    }
+}
+
+void AgpsStateMachine::notifyEventToSubscriber(
+        AgpsEvent event, AgpsSubscriber* subscriberToNotify,
+        bool deleteSubscriberPostNotify) {
+
+    LOC_LOGD("notifyEventToSubscriber(): "
+            "SM %p, Event %d Subscriber %p Delete %d",
+            this, event, subscriberToNotify, deleteSubscriberPostNotify);
+
+    switch (event){
+
+        case AGPS_EVENT_GRANTED:
+            mAgpsManager->mAtlOpenStatusCb(
+                    subscriberToNotify->mConnHandle, 1, getAPN(),
+                    getBearer(), mAgpsType);
+            break;
+
+        case AGPS_EVENT_DENIED:
+            mAgpsManager->mAtlOpenStatusCb(
+                    subscriberToNotify->mConnHandle, 0, getAPN(),
+                    getBearer(), mAgpsType);
+            break;
+
+        case AGPS_EVENT_UNSUBSCRIBE:
+        case AGPS_EVENT_RELEASED:
+            mAgpsManager->mAtlCloseStatusCb(subscriberToNotify->mConnHandle, 1);
+            break;
+
+        default:
+            LOC_LOGE("Invalid event %d", event);
+    }
+
+    /* Search this subscriber in list and delete */
+    if (deleteSubscriberPostNotify) {
+        deleteSubscriber(subscriberToNotify);
+    }
+}
+
+void AgpsStateMachine::transitionState(AgpsState newState){
+
+    LOC_LOGD("transitionState(): SM %p, old %d, new %d",
+               this, mState, newState);
+
+    mState = newState;
+
+    // notify state transitions to all subscribers ?
+}
+
+void AgpsStateMachine::addSubscriber(AgpsSubscriber* subscriberToAdd){
+
+    LOC_LOGD("addSubscriber(): SM %p, Subscriber %p",
+               this, subscriberToAdd);
+
+    // Check if subscriber is already present in the current list
+    // If not, then add
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    for(; it != mSubscriberList.end(); it++){
+        AgpsSubscriber* subscriber = *it;
+        if(subscriber->equals(subscriberToAdd)){
+            LOC_LOGE("Subscriber already in list");
+            return;
+        }
+    }
+
+    AgpsSubscriber* cloned = subscriberToAdd->clone();
+    LOC_LOGD("addSubscriber(): cloned subscriber: %p", cloned);
+    mSubscriberList.push_back(cloned);
+}
+
+void AgpsStateMachine::deleteSubscriber(AgpsSubscriber* subscriberToDelete){
+
+    LOC_LOGD("deleteSubscriber(): SM %p, Subscriber %p",
+               this, subscriberToDelete);
+
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    while ( it != mSubscriberList.end() ) {
+
+        AgpsSubscriber* subscriber = *it;
+        if(subscriber && subscriber->equals(subscriberToDelete)){
+
+            it = mSubscriberList.erase(it);
+            delete subscriber;
+        }else{
+            it++;
+        }
+    }
+}
+
+bool AgpsStateMachine::anyActiveSubscribers(){
+
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    for(; it != mSubscriberList.end(); it++){
+        AgpsSubscriber* subscriber = *it;
+        if(!subscriber->mIsInactive){
+            return true;
+        }
+    }
+    return false;
+}
+
+void AgpsStateMachine::setAPN(char* apn, unsigned int len){
+
+    if (NULL != mAPN) {
+        delete mAPN;
+    }
+
+    if(apn == NULL || len <= 0){
+        LOC_LOGD("Invalid apn len (%d) or null apn", len);
+        mAPN = NULL;
+        mAPNLen = 0;
+    }
+
+    if (NULL != apn) {
+        mAPN = new char[len+1];
+        memcpy(mAPN, apn, len);
+        mAPN[len] = '\0';
+        mAPNLen = len;
+    }
+}
+
+AgpsSubscriber* AgpsStateMachine::getSubscriber(int connHandle){
+
+    /* Go over the subscriber list */
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    for(; it != mSubscriberList.end(); it++){
+        AgpsSubscriber* subscriber = *it;
+        if(subscriber->mConnHandle == connHandle){
+            return subscriber;
+        }
+    }
+
+    /* Not found, return NULL */
+    return NULL;
+}
+
+AgpsSubscriber* AgpsStateMachine::getFirstSubscriber(bool isInactive){
+
+    /* Go over the subscriber list */
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    for(; it != mSubscriberList.end(); it++){
+        AgpsSubscriber* subscriber = *it;
+        if(subscriber->mIsInactive == isInactive){
+            return subscriber;
+        }
+    }
+
+    /* Not found, return NULL */
+    return NULL;
+}
+
+void AgpsStateMachine::dropAllSubscribers(){
+
+    LOC_LOGD("dropAllSubscribers(): SM %p", this);
+
+    /* Go over the subscriber list */
+    std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
+    while ( it != mSubscriberList.end() ){
+        AgpsSubscriber* subscriber = *it;
+        it = mSubscriberList.erase(it);
+        delete subscriber;
+    }
+}
+
+/* --------------------------------------------------------------------
+ *   DS State Machine Methods
+ * -------------------------------------------------------------------*/
+const int DSStateMachine::MAX_START_DATA_CALL_RETRIES = 4;
+const int DSStateMachine::DATA_CALL_RETRY_DELAY_MSEC = 500;
+
+/* Overridden method
+ * DS SM needs to handle one scenario differently */
+void DSStateMachine::processAgpsEvent(AgpsEvent event){
+
+    LOC_LOGD("DSStateMachine::processAgpsEvent() %d", event);
+
+    /* DS Client call setup APIs don't return failure/closure separately.
+     * Hence we receive RELEASED event in both cases.
+     * If we are in pending, we should consider RELEASED as DENIED */
+    if(event == AGPS_EVENT_RELEASED && mState == AGPS_STATE_PENDING){
+
+        LOC_LOGD("Translating RELEASED to DENIED event");
+        event = AGPS_EVENT_DENIED;
+    }
+
+    /* Redirect process to base class */
+    AgpsStateMachine::processAgpsEvent(event);
+}
+
+/* Timer Callback
+ * For the retry timer started in case of DS Client call setup failure */
+void delay_callback(void *callbackData, int result)
+{
+    LOC_LOGD("delay_callback(): cbData %p", callbackData);
+
+    (void)result;
+
+    if(callbackData == NULL) {
+        LOC_LOGE("delay_callback(): NULL argument received !");
+        return;
+    }
+    DSStateMachine* dsStateMachine = (DSStateMachine *)callbackData;
+    dsStateMachine->retryCallback();
+}
+
+/* Invoked from Timer Callback
+ * For the retry timer started in case of DS Client call setup failure */
+void DSStateMachine :: retryCallback()
+{
+    LOC_LOGD("DSStateMachine::retryCallback()");
+
+    /* Request SUPL ES
+     * There must be at least one active subscriber in list */
+    AgpsSubscriber* subscriber = getFirstSubscriber(false);
+    if(subscriber == NULL) {
+
+        LOC_LOGE("No active subscriber for DS Client call setup");
+        return;
+    }
+
+    /* Send message to retry */
+    mAgpsManager->mSendMsgToAdapterQueueFn(
+            new AgpsMsgRequestATL(
+                    mAgpsManager, subscriber->mConnHandle,
+                    LOC_AGPS_TYPE_SUPL_ES));
+}
+
+/* Overridden method
+ * Request or Release data connection
+ * bool request :
+ *      true  = Request data connection
+ *      false = Release data connection */
+int DSStateMachine::requestOrReleaseDataConn(bool request){
+
+    LOC_LOGD("DSStateMachine::requestOrReleaseDataConn(): "
+             "request %d", request);
+
+    /* Release data connection required ? */
+    if(!request && mAgpsManager->mDSClientStopDataCallFn){
+
+        mAgpsManager->mDSClientStopDataCallFn();
+        LOC_LOGD("DS Client release data call request sent !");
+        return 0;
+    }
+
+    /* Setup data connection request
+     * There must be at least one active subscriber in list */
+    AgpsSubscriber* subscriber = getFirstSubscriber(false);
+    if(subscriber == NULL) {
+
+        LOC_LOGE("No active subscriber for DS Client call setup");
+        return -1;
+    }
+
+    /* DS Client Fn registered ? */
+    if(!mAgpsManager->mDSClientOpenAndStartDataCallFn){
+
+        LOC_LOGE("DS Client start fn not registered, fallback to SUPL ATL");
+        notifyEventToSubscriber(AGPS_EVENT_DENIED, subscriber, false);
+        return -1;
+    }
+
+    /* Setup the call */
+    int ret = mAgpsManager->mDSClientOpenAndStartDataCallFn();
+
+    /* Check if data call start failed */
+    switch (ret) {
+
+        case LOC_API_ADAPTER_ERR_ENGINE_BUSY:
+            LOC_LOGE("DS Client open call failed, err: %d", ret);
+            mRetries++;
+            if(mRetries > MAX_START_DATA_CALL_RETRIES) {
+
+                LOC_LOGE("DS Client call retries exhausted, "
+                         "falling back to normal SUPL ATL");
+                notifyEventToSubscriber(AGPS_EVENT_DENIED, subscriber, false);
+            }
+            /* Retry DS Client call setup after some delay */
+            else if(loc_timer_start(
+                        DATA_CALL_RETRY_DELAY_MSEC, delay_callback, this)) {
+                    LOC_LOGE("Error: Could not start delay thread\n");
+                    return -1;
+                }
+            break;
+
+        case LOC_API_ADAPTER_ERR_UNSUPPORTED:
+            LOC_LOGE("No emergency profile found. Fall back to normal SUPL ATL");
+            notifyEventToSubscriber(AGPS_EVENT_DENIED, subscriber, false);
+            break;
+
+        case LOC_API_ADAPTER_ERR_SUCCESS:
+            LOC_LOGD("Request to start data call sent");
+            break;
+
+        default:
+            LOC_LOGE("Unrecognized return value: %d", ret);
+    }
+
+    return ret;
+}
+
+void DSStateMachine::notifyEventToSubscriber(
+        AgpsEvent event, AgpsSubscriber* subscriberToNotify,
+        bool deleteSubscriberPostNotify) {
+
+    LOC_LOGD("DSStateMachine::notifyEventToSubscriber");
+
+    switch (event){
+
+        case AGPS_EVENT_GRANTED:
+            mAgpsManager->mAtlOpenStatusCb(
+                    subscriberToNotify->mConnHandle, 1, NULL,
+                    AGPS_APN_BEARER_INVALID, LOC_AGPS_TYPE_SUPL_ES);
+            break;
+
+        case AGPS_EVENT_DENIED:
+            /* Now try with regular SUPL
+             * We need to send request via message queue */
+            mRetries = 0;
+            mAgpsManager->mSendMsgToAdapterQueueFn(
+                    new AgpsMsgRequestATL(
+                            mAgpsManager, subscriberToNotify->mConnHandle,
+                            LOC_AGPS_TYPE_SUPL));
+            break;
+
+        case AGPS_EVENT_UNSUBSCRIBE:
+            mAgpsManager->mAtlCloseStatusCb(subscriberToNotify->mConnHandle, 1);
+            break;
+
+        case AGPS_EVENT_RELEASED:
+            mAgpsManager->mDSClientCloseDataCallFn();
+            break;
+
+        default:
+            LOC_LOGE("Invalid event %d", event);
+    }
+
+    /* Search this subscriber in list and delete */
+    if (deleteSubscriberPostNotify) {
+        deleteSubscriber(subscriberToNotify);
+    }
+}
+
+/* --------------------------------------------------------------------
+ *   Loc AGPS Manager Methods
+ * -------------------------------------------------------------------*/
+
+/* CREATE AGPS STATE MACHINES
+ * Must be invoked in Msg Handler context */
+void AgpsManager::createAgpsStateMachines() {
+
+    LOC_LOGD("AgpsManager::createAgpsStateMachines");
+
+    bool agpsCapable =
+            ((loc_core::ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSA) ||
+                    (loc_core::ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSB));
+
+    if (NULL == mInternetNif) {
+        mInternetNif = new AgpsStateMachine(this, LOC_AGPS_TYPE_WWAN_ANY);
+        LOC_LOGD("Internet NIF: %p", mInternetNif);
+    }
+    if (agpsCapable) {
+        if (NULL == mAgnssNif) {
+            mAgnssNif = new AgpsStateMachine(this, LOC_AGPS_TYPE_SUPL);
+            LOC_LOGD("AGNSS NIF: %p", mAgnssNif);
+        }
+        if (NULL == mDsNif &&
+                loc_core::ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL){
+
+            if(!mDSClientInitFn){
+
+                LOC_LOGE("DS Client Init Fn not registered !");
+                return;
+            }
+            if(mDSClientInitFn(false) != 0){
+
+                LOC_LOGE("Failed to init data service client");
+                return;
+            }
+            mDsNif = new DSStateMachine(this);
+            LOC_LOGD("DS NIF: %p", mDsNif);
+        }
+    }
+}
+
+AgpsStateMachine* AgpsManager::getAgpsStateMachine(AGpsExtType agpsType) {
+
+    LOC_LOGD("AgpsManager::getAgpsStateMachine(): agpsType %d", agpsType);
+
+    switch (agpsType) {
+
+        case LOC_AGPS_TYPE_INVALID:
+        case LOC_AGPS_TYPE_SUPL:
+            if(mAgnssNif == NULL){
+                LOC_LOGE("NULL AGNSS NIF !");
+            }
+            return mAgnssNif;
+
+        case LOC_AGPS_TYPE_SUPL_ES:
+            if (loc_core::ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL) {
+                if (mDsNif == NULL) {
+                    createAgpsStateMachines();
+                }
+                return mDsNif;
+            } else {
+                return mAgnssNif;
+            }
+
+        default:
+            return mInternetNif;
+    }
+
+    LOC_LOGE("No SM found !");
+    return NULL;
+}
+
+void AgpsManager::requestATL(int connHandle, AGpsExtType agpsType){
+
+    LOC_LOGD("AgpsManager::requestATL(): connHandle %d, agpsType %d",
+               connHandle, agpsType);
+
+    AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
+
+    if(sm == NULL){
+
+        LOC_LOGE("No AGPS State Machine for agpsType: %d", agpsType);
+        mAtlOpenStatusCb(
+                connHandle, 0, NULL, AGPS_APN_BEARER_INVALID, agpsType);
+        return;
+    }
+
+    /* Invoke AGPS SM processing */
+    AgpsSubscriber subscriber(connHandle);
+    sm->setCurrentSubscriber(&subscriber);
+
+    /* If DS State Machine, wait for close complete */
+    if(agpsType == LOC_AGPS_TYPE_SUPL_ES){
+        subscriber.mWaitForCloseComplete = true;
+    }
+
+    /* Send subscriber event */
+    sm->processAgpsEvent(AGPS_EVENT_SUBSCRIBE);
+}
+
+void AgpsManager::releaseATL(int connHandle){
+
+    LOC_LOGD("AgpsManager::releaseATL(): connHandle %d", connHandle);
+
+    /* First find the subscriber with specified handle.
+     * We need to search in all state machines. */
+    AgpsStateMachine* sm = NULL;
+    AgpsSubscriber* subscriber = NULL;
+
+    if (mAgnssNif &&
+            (subscriber = mAgnssNif->getSubscriber(connHandle)) != NULL) {
+        sm = mAgnssNif;
+    }
+    else if (mInternetNif &&
+            (subscriber = mInternetNif->getSubscriber(connHandle)) != NULL) {
+        sm = mInternetNif;
+    }
+    else if (mDsNif &&
+            (subscriber = mDsNif->getSubscriber(connHandle)) != NULL) {
+        sm = mDsNif;
+    }
+
+    if(sm == NULL){
+        LOC_LOGE("Subscriber with connHandle %d not found in any SM",
+                    connHandle);
+        mAtlCloseStatusCb(connHandle, 0);
+        return;
+    }
+
+    /* Now send unsubscribe event */
+    sm->setCurrentSubscriber(subscriber);
+    sm->processAgpsEvent(AGPS_EVENT_UNSUBSCRIBE);
+}
+
+void AgpsManager::reportDataCallOpened(){
+
+    LOC_LOGD("AgpsManager::reportDataCallOpened");
+
+    if (mDsNif) {
+        mDsNif->processAgpsEvent(AGPS_EVENT_GRANTED);
+    }
+}
+
+void AgpsManager::reportDataCallClosed(){
+
+    LOC_LOGD("AgpsManager::reportDataCallClosed");
+
+    if (mDsNif) {
+        mDsNif->processAgpsEvent(AGPS_EVENT_RELEASED);
+    }
+}
+
+void AgpsManager::reportAtlOpenSuccess(
+        AGpsExtType agpsType, char* apnName, int apnLen,
+        LocApnIpType ipType){
+
+    LOC_LOGD("AgpsManager::reportAtlOpenSuccess(): "
+             "AgpsType %d, APN [%s], Len %d, IPType %d",
+             agpsType, apnName, apnLen, ipType);
+
+    /* Find the state machine instance */
+    AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
+
+    /* Convert LocApnIpType sent by framework to AGpsBearerType */
+    AGpsBearerType bearerType;
+    switch (ipType) {
+        case LOC_APN_IP_IPV4:
+            bearerType = AGPS_APN_BEARER_IPV4;
+            break;
+        case LOC_APN_IP_IPV6:
+            bearerType = AGPS_APN_BEARER_IPV6;
+            break;
+        case LOC_APN_IP_IPV4V6:
+            bearerType = AGPS_APN_BEARER_IPV4V6;
+            break;
+        default:
+            bearerType = AGPS_APN_BEARER_IPV4;
+            break;
+    }
+
+    /* Set bearer and apn info in state machine instance */
+    sm->setBearer(bearerType);
+    sm->setAPN(apnName, apnLen);
+
+    /* Send GRANTED event to state machine */
+    sm->processAgpsEvent(AGPS_EVENT_GRANTED);
+}
+
+void AgpsManager::reportAtlOpenFailed(AGpsExtType agpsType){
+
+    LOC_LOGD("AgpsManager::reportAtlOpenFailed(): AgpsType %d", agpsType);
+
+    /* Fetch SM and send DENIED event */
+    AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
+    sm->processAgpsEvent(AGPS_EVENT_DENIED);
+}
+
+void AgpsManager::reportAtlClosed(AGpsExtType agpsType){
+
+    LOC_LOGD("AgpsManager::reportAtlClosed(): AgpsType %d", agpsType);
+
+    /* Fetch SM and send RELEASED event */
+    AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
+    sm->processAgpsEvent(AGPS_EVENT_RELEASED);
+}
+
+void AgpsManager::handleModemSSR(){
+
+    LOC_LOGD("AgpsManager::handleModemSSR");
+
+    /* Drop subscribers from all state machines */
+    if (mAgnssNif){
+        mAgnssNif->dropAllSubscribers();
+    }
+    if (mInternetNif){
+        mInternetNif->dropAllSubscribers();
+    }
+    if(mDsNif){
+        mDsNif->dropAllSubscribers();
+    }
+
+    // reinitialize DS client in SSR mode
+    if(loc_core::ContextBase::mGps_conf.
+            USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL){
+
+        mDSClientStopDataCallFn();
+        mDSClientCloseDataCallFn();
+        mDSClientReleaseFn();
+
+        mDSClientInitFn(true);
+    }
+}
+
+AGpsBearerType AgpsUtils::ipTypeToBearerType(LocApnIpType ipType) {
+
+    switch (ipType) {
+
+        case LOC_APN_IP_IPV4:
+            return AGPS_APN_BEARER_IPV4;
+
+        case LOC_APN_IP_IPV6:
+            return AGPS_APN_BEARER_IPV6;
+
+        case LOC_APN_IP_IPV4V6:
+            return AGPS_APN_BEARER_IPV4V6;
+
+        default:
+            return AGPS_APN_BEARER_IPV4;
+    }
+}
+
+LocApnIpType AgpsUtils::bearerTypeToIpType(AGpsBearerType bearerType){
+
+    switch (bearerType) {
+
+        case AGPS_APN_BEARER_IPV4:
+            return LOC_APN_IP_IPV4;
+
+        case AGPS_APN_BEARER_IPV6:
+            return LOC_APN_IP_IPV6;
+
+        case AGPS_APN_BEARER_IPV4V6:
+            return LOC_APN_IP_IPV4V6;
+
+        default:
+            return LOC_APN_IP_IPV4;
+    }
+}
diff --git a/sdm845/gnss/Agps.h b/sdm845/gnss/Agps.h
new file mode 100644
index 0000000..1e95a42
--- /dev/null
+++ b/sdm845/gnss/Agps.h
@@ -0,0 +1,446 @@
+/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef AGPS_H
+#define AGPS_H
+
+#include <functional>
+#include <list>
+#include <MsgTask.h>
+#include <gps_extended_c.h>
+#include <platform_lib_log_util.h>
+
+/* ATL callback function pointers
+ * Passed in by Adapter to AgpsManager */
+typedef std::function<void(
+        int handle, int isSuccess, char* apn,
+        AGpsBearerType bearerType, AGpsExtType agpsType)>  AgpsAtlOpenStatusCb;
+
+typedef std::function<void(int handle, int isSuccess)>     AgpsAtlCloseStatusCb;
+
+/* DS Client control APIs
+ * Passed in by Adapter to AgpsManager */
+typedef std::function<int(bool isDueToSSR)>  AgpsDSClientInitFn;
+typedef std::function<int()>                 AgpsDSClientOpenAndStartDataCallFn;
+typedef std::function<void()>                AgpsDSClientStopDataCallFn;
+typedef std::function<void()>                AgpsDSClientCloseDataCallFn;
+typedef std::function<void()>                AgpsDSClientReleaseFn;
+
+/* Post message to adapter's message queue */
+typedef std::function<void(LocMsg* msg)>     SendMsgToAdapterMsgQueueFn;
+
+/* AGPS States */
+typedef enum {
+    AGPS_STATE_INVALID = 0,
+    AGPS_STATE_RELEASED,
+    AGPS_STATE_PENDING,
+    AGPS_STATE_ACQUIRED,
+    AGPS_STATE_RELEASING
+} AgpsState;
+
+typedef enum {
+    AGPS_EVENT_INVALID = 0,
+    AGPS_EVENT_SUBSCRIBE,
+    AGPS_EVENT_UNSUBSCRIBE,
+    AGPS_EVENT_GRANTED,
+    AGPS_EVENT_RELEASED,
+    AGPS_EVENT_DENIED
+} AgpsEvent;
+
+/* Notification Types sent to subscribers */
+typedef enum {
+    AGPS_NOTIFICATION_TYPE_INVALID = 0,
+
+    /* Meant for all subscribers, either active or inactive */
+    AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS,
+
+    /* Meant for only inactive subscribers */
+    AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS,
+
+    /* Meant for only active subscribers */
+    AGPS_NOTIFICATION_TYPE_FOR_ACTIVE_SUBSCRIBERS
+} AgpsNotificationType;
+
+/* Framework AGNSS interface
+ * This interface is defined in IAGnssCallback provided by
+ * Android Framework.
+ * Must be kept in sync with that interface. */
+namespace AgpsFrameworkInterface {
+
+    /** AGNSS type **/
+    enum AGnssType : uint8_t {
+        TYPE_SUPL         = 1,
+        TYPE_C2K          = 2
+    };
+
+    enum AGnssStatusValue : uint8_t {
+        /** GNSS requests data connection for AGNSS. */
+        REQUEST_AGNSS_DATA_CONN  = 1,
+        /** GNSS releases the AGNSS data connection. */
+        RELEASE_AGNSS_DATA_CONN  = 2,
+        /** AGNSS data connection initiated */
+        AGNSS_DATA_CONNECTED     = 3,
+        /** AGNSS data connection completed */
+        AGNSS_DATA_CONN_DONE     = 4,
+        /** AGNSS data connection failed */
+        AGNSS_DATA_CONN_FAILED   = 5
+    };
+
+    /*
+     * Represents the status of AGNSS augmented to support IPv4.
+     */
+    struct AGnssStatusIpV4 {
+        AGnssType type;
+        AGnssStatusValue status;
+        /*
+         * 32-bit IPv4 address.
+         */
+        unsigned int ipV4Addr;
+    };
+
+    /*
+     * Represents the status of AGNSS augmented to support IPv6.
+     */
+    struct AGnssStatusIpV6 {
+        AGnssType type;
+        AGnssStatusValue status;
+        /*
+         * 128-bit IPv6 address.
+         */
+        unsigned char ipV6Addr[16];
+    };
+
+    /*
+     * Callback with AGNSS(IpV4) status information.
+     *
+     * @param status Will be of type AGnssStatusIpV4.
+     */
+    typedef void (*AgnssStatusIpV4Cb)(AGnssStatusIpV4 status);
+
+    /*
+     * Callback with AGNSS(IpV6) status information.
+     *
+     * @param status Will be of type AGnssStatusIpV6.
+     */
+    typedef void (*AgnssStatusIpV6Cb)(AGnssStatusIpV6 status);
+}
+
+/* Classes in this header */
+class AgpsSubscriber;
+class AgpsManager;
+class AgpsStateMachine;
+class DSStateMachine;
+
+
+/* SUBSCRIBER
+ * Each Subscriber instance corresponds to one AGPS request,
+ * received by the AGPS state machine */
+class AgpsSubscriber {
+
+public:
+    int mConnHandle;
+
+    /* Does this subscriber wait for data call close complete,
+     * before being notified ATL close ?
+     * While waiting for data call close, subscriber will be in
+     * inactive state. */
+    bool mWaitForCloseComplete;
+    bool mIsInactive;
+
+    inline AgpsSubscriber(int connHandle) :
+            mConnHandle(connHandle), mWaitForCloseComplete(false),
+            mIsInactive(false) {}
+    inline virtual ~AgpsSubscriber() {}
+
+    inline virtual bool equals(const AgpsSubscriber *s) const
+    { return (mConnHandle == s->mConnHandle); }
+
+    inline virtual AgpsSubscriber* clone()
+    { return new AgpsSubscriber(mConnHandle); }
+};
+
+/* AGPS STATE MACHINE */
+class AgpsStateMachine {
+protected:
+    /* AGPS Manager instance, from where this state machine is created */
+    AgpsManager* mAgpsManager;
+
+    /* List of all subscribers for this State Machine.
+     * Once a subscriber is notified for ATL open/close status,
+     * it is deleted */
+    std::list<AgpsSubscriber*> mSubscriberList;
+
+    /* Current subscriber, whose request this State Machine is
+     * currently processing */
+    AgpsSubscriber* mCurrentSubscriber;
+
+    /* Current state for this state machine */
+    AgpsState mState;
+
+private:
+    /* AGPS Type for this state machine
+       LOC_AGPS_TYPE_ANY           0
+       LOC_AGPS_TYPE_SUPL          1
+       LOC_AGPS_TYPE_WWAN_ANY      3
+       LOC_AGPS_TYPE_SUPL_ES       5 */
+    AGpsExtType mAgpsType;
+
+    /* APN and IP Type info for AGPS Call */
+    char* mAPN;
+    unsigned int mAPNLen;
+    AGpsBearerType mBearer;
+
+public:
+    /* CONSTRUCTOR */
+    AgpsStateMachine(AgpsManager* agpsManager, AGpsExtType agpsType):
+        mAgpsManager(agpsManager), mSubscriberList(),
+        mCurrentSubscriber(NULL), mState(AGPS_STATE_RELEASED),
+        mAgpsType(agpsType), mAPN(NULL), mAPNLen(0),
+        mBearer(AGPS_APN_BEARER_INVALID) {};
+
+    virtual ~AgpsStateMachine() { if(NULL != mAPN) delete[] mAPN; };
+
+    /* Getter/Setter methods */
+    void setAPN(char* apn, unsigned int len);
+    inline char* getAPN() const { return (char*)mAPN; }
+    inline void setBearer(AGpsBearerType bearer) { mBearer = bearer; }
+    inline AGpsBearerType getBearer() const { return mBearer; }
+    inline AGpsExtType getType() const { return mAgpsType; }
+    inline void setCurrentSubscriber(AgpsSubscriber* subscriber)
+    { mCurrentSubscriber = subscriber; }
+
+    /* Fetch subscriber with specified handle */
+    AgpsSubscriber* getSubscriber(int connHandle);
+
+    /* Fetch first active or inactive subscriber in list
+     * isInactive = true : fetch first inactive subscriber
+     * isInactive = false : fetch first active subscriber */
+    AgpsSubscriber* getFirstSubscriber(bool isInactive);
+
+    /* Process LOC AGPS Event being passed in
+     * onRsrcEvent */
+    virtual void processAgpsEvent(AgpsEvent event);
+
+    /* Drop all subscribers, in case of Modem SSR */
+    void dropAllSubscribers();
+
+protected:
+    /* Remove the specified subscriber from list if present.
+     * Also delete the subscriber instance. */
+    void deleteSubscriber(AgpsSubscriber* subscriber);
+
+private:
+    /* Send call setup request to framework
+     * sendRsrcRequest(LOC_GPS_REQUEST_AGPS_DATA_CONN)
+     * sendRsrcRequest(LOC_GPS_RELEASE_AGPS_DATA_CONN) */
+    virtual int requestOrReleaseDataConn(bool request);
+
+    /* Individual event processing methods */
+    void processAgpsEventSubscribe();
+    void processAgpsEventUnsubscribe();
+    void processAgpsEventGranted();
+    void processAgpsEventReleased();
+    void processAgpsEventDenied();
+
+    /* Clone the passed in subscriber and add to the subscriber list
+     * if not already present */
+    void addSubscriber(AgpsSubscriber* subscriber);
+
+    /* Notify subscribers about AGPS events */
+    void notifyAllSubscribers(
+            AgpsEvent event, bool deleteSubscriberPostNotify,
+            AgpsNotificationType notificationType);
+    virtual void notifyEventToSubscriber(
+            AgpsEvent event, AgpsSubscriber* subscriber,
+            bool deleteSubscriberPostNotify);
+
+    /* Do we have any subscribers in active state */
+    bool anyActiveSubscribers();
+
+    /* Transition state */
+    void transitionState(AgpsState newState);
+};
+
+/* DS STATE MACHINE */
+class DSStateMachine : public AgpsStateMachine {
+
+private:
+    static const int MAX_START_DATA_CALL_RETRIES;
+    static const int DATA_CALL_RETRY_DELAY_MSEC;
+
+    int mRetries;
+
+public:
+    /* CONSTRUCTOR */
+    DSStateMachine(AgpsManager* agpsManager):
+        AgpsStateMachine(agpsManager, LOC_AGPS_TYPE_SUPL_ES), mRetries(0) {}
+
+    /* Overridden method
+     * DS SM needs to handle one event differently */
+    void processAgpsEvent(AgpsEvent event);
+
+    /* Retry callback, used in case call failure */
+    void retryCallback();
+
+private:
+    /* Overridden method, different functionality for DS SM
+     * Send call setup request to framework
+     * sendRsrcRequest(LOC_GPS_REQUEST_AGPS_DATA_CONN)
+     * sendRsrcRequest(LOC_GPS_RELEASE_AGPS_DATA_CONN) */
+    int requestOrReleaseDataConn(bool request);
+
+    /* Overridden method, different functionality for DS SM */
+    void notifyEventToSubscriber(
+            AgpsEvent event, AgpsSubscriber* subscriber,
+            bool deleteSubscriberPostNotify);
+};
+
+/* LOC AGPS MANAGER */
+class AgpsManager {
+
+    friend class AgpsStateMachine;
+    friend class DSStateMachine;
+
+public:
+    /* CONSTRUCTOR */
+    AgpsManager():
+        mFrameworkStatusV4Cb(NULL),
+        mAtlOpenStatusCb(), mAtlCloseStatusCb(),
+        mDSClientInitFn(), mDSClientOpenAndStartDataCallFn(),
+        mDSClientStopDataCallFn(), mDSClientCloseDataCallFn(), mDSClientReleaseFn(),
+        mSendMsgToAdapterQueueFn(),
+        mAgnssNif(NULL), mInternetNif(NULL), mDsNif(NULL) {}
+
+    /* Register callbacks */
+    void registerCallbacks(
+            AgpsFrameworkInterface::AgnssStatusIpV4Cb
+                                                frameworkStatusV4Cb,
+
+            AgpsAtlOpenStatusCb                 atlOpenStatusCb,
+            AgpsAtlCloseStatusCb                atlCloseStatusCb,
+
+            AgpsDSClientInitFn                  dsClientInitFn,
+            AgpsDSClientOpenAndStartDataCallFn  dsClientOpenAndStartDataCallFn,
+            AgpsDSClientStopDataCallFn          dsClientStopDataCallFn,
+            AgpsDSClientCloseDataCallFn         dsClientCloseDataCallFn,
+            AgpsDSClientReleaseFn               dsClientReleaseFn,
+
+            SendMsgToAdapterMsgQueueFn          sendMsgToAdapterQueueFn ){
+
+        mFrameworkStatusV4Cb = frameworkStatusV4Cb;
+
+        mAtlOpenStatusCb = atlOpenStatusCb;
+        mAtlCloseStatusCb = atlCloseStatusCb;
+
+        mDSClientInitFn = dsClientInitFn;
+        mDSClientOpenAndStartDataCallFn = dsClientOpenAndStartDataCallFn;
+        mDSClientStopDataCallFn = dsClientStopDataCallFn;
+        mDSClientCloseDataCallFn = dsClientCloseDataCallFn;
+        mDSClientReleaseFn = dsClientReleaseFn;
+
+        mSendMsgToAdapterQueueFn = sendMsgToAdapterQueueFn;
+    }
+
+    /* Create all AGPS state machines */
+    void createAgpsStateMachines();
+
+    /* Process incoming ATL requests */
+    void requestATL(int connHandle, AGpsExtType agpsType);
+    void releaseATL(int connHandle);
+
+    /* Process incoming DS Client data call events */
+    void reportDataCallOpened();
+    void reportDataCallClosed();
+
+    /* Process incoming framework data call events */
+    void reportAtlOpenSuccess(
+            AGpsExtType agpsType, char* apnName, int apnLen,
+            LocApnIpType ipType);
+    void reportAtlOpenFailed(AGpsExtType agpsType);
+    void reportAtlClosed(AGpsExtType agpsType);
+
+    /* Handle Modem SSR */
+    void handleModemSSR();
+
+protected:
+    AgpsFrameworkInterface::AgnssStatusIpV4Cb mFrameworkStatusV4Cb;
+
+    AgpsAtlOpenStatusCb   mAtlOpenStatusCb;
+    AgpsAtlCloseStatusCb  mAtlCloseStatusCb;
+
+    AgpsDSClientInitFn                  mDSClientInitFn;
+    AgpsDSClientOpenAndStartDataCallFn  mDSClientOpenAndStartDataCallFn;
+    AgpsDSClientStopDataCallFn          mDSClientStopDataCallFn;
+    AgpsDSClientCloseDataCallFn         mDSClientCloseDataCallFn;
+    AgpsDSClientReleaseFn               mDSClientReleaseFn;
+
+    SendMsgToAdapterMsgQueueFn          mSendMsgToAdapterQueueFn;
+
+    AgpsStateMachine*   mAgnssNif;
+    AgpsStateMachine*   mInternetNif;
+    AgpsStateMachine*   mDsNif;
+
+private:
+    /* Fetch state machine for handling request ATL call */
+    AgpsStateMachine* getAgpsStateMachine(AGpsExtType agpsType);
+};
+
+/* Request SUPL/INTERNET/SUPL_ES ATL
+ * This LocMsg is defined in this header since it has to be used from more
+ * than one place, other Agps LocMsg are restricted to GnssAdapter and
+ * declared inline */
+struct AgpsMsgRequestATL: public LocMsg {
+
+    AgpsManager* mAgpsManager;
+    int mConnHandle;
+    AGpsExtType mAgpsType;
+
+    inline AgpsMsgRequestATL(AgpsManager* agpsManager, int connHandle,
+            AGpsExtType agpsType) :
+            LocMsg(), mAgpsManager(agpsManager), mConnHandle(connHandle), mAgpsType(
+                    agpsType) {
+
+        LOC_LOGV("AgpsMsgRequestATL");
+    }
+
+    inline virtual void proc() const {
+
+        LOC_LOGV("AgpsMsgRequestATL::proc()");
+        mAgpsManager->requestATL(mConnHandle, mAgpsType);
+    }
+};
+
+namespace AgpsUtils {
+
+AGpsBearerType ipTypeToBearerType(LocApnIpType ipType);
+LocApnIpType bearerTypeToIpType(AGpsBearerType bearerType);
+
+}
+
+#endif /* AGPS_H */
diff --git a/sdm845/gnss/Android.mk b/sdm845/gnss/Android.mk
new file mode 100644
index 0000000..ea36208
--- /dev/null
+++ b/sdm845/gnss/Android.mk
@@ -0,0 +1,44 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libgnss
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    libdl \
+    liblog \
+    libloc_core \
+    libgps.utils
+
+LOCAL_SRC_FILES += \
+    location_gnss.cpp \
+    GnssAdapter.cpp \
+    Agps.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
+   LOCAL_CFLAGS += -DTARGET_BUILD_VARIANT_USER
+endif
+
+LOCAL_C_INCLUDES:= \
+    $(TARGET_OUT_HEADERS)/gps.utils \
+    $(TARGET_OUT_HEADERS)/libloc_core \
+    $(TARGET_OUT_HEADERS)/libloc_pla \
+    $(TARGET_OUT_HEADERS)/liblocation_api
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/gnss/GnssAdapter.cpp b/sdm845/gnss/GnssAdapter.cpp
new file mode 100644
index 0000000..fc7d55e
--- /dev/null
+++ b/sdm845/gnss/GnssAdapter.cpp
@@ -0,0 +1,2833 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_TAG "LocSvc_GnssAdapter"
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <ctype.h>
+#include <cutils/properties.h>
+#include <math.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <GnssAdapter.h>
+#include <string>
+#include <loc_log.h>
+#include <loc_nmea.h>
+#include <Agps.h>
+#include <SystemStatus.h>
+
+#include <loc_nmea.h>
+#include <vector>
+#include <string>
+
+using namespace loc_core;
+
+GnssAdapter::GnssAdapter() :
+    LocAdapterBase(0,
+                   LocDualContext::getLocFgContext(NULL,
+                                                   NULL,
+                                                   LocDualContext::mLocationHalName,
+                                                   false)),
+    mUlpProxy(new UlpProxyBase()),
+    mUlpPositionMode(),
+    mGnssSvIdUsedInPosition(),
+    mGnssSvIdUsedInPosAvail(false),
+    mControlCallbacks(),
+    mPowerVoteId(0),
+    mNiData(),
+    mAgpsManager()
+{
+    LOC_LOGD("%s]: Constructor %p", __func__, this);
+    mUlpPositionMode.mode = LOC_POSITION_MODE_INVALID;
+    readConfigCommand();
+    setConfigCommand();
+
+}
+
+inline
+GnssAdapter::~GnssAdapter()
+{
+    LOC_LOGD("%s]: Destructor", __func__);
+    delete mUlpProxy;
+}
+
+void
+GnssAdapter::setControlCallbacksCommand(LocationControlCallbacks& controlCallbacks)
+{
+    struct MsgSetControlCallbacks : public LocMsg {
+        GnssAdapter& mAdapter;
+        const LocationControlCallbacks mControlCallbacks;
+        inline MsgSetControlCallbacks(GnssAdapter& adapter,
+                                      LocationControlCallbacks& controlCallbacks) :
+            LocMsg(),
+            mAdapter(adapter),
+            mControlCallbacks(controlCallbacks) {}
+        inline virtual void proc() const {
+            mAdapter.setControlCallbacks(mControlCallbacks);
+        }
+    };
+
+    sendMsg(new MsgSetControlCallbacks(*this, controlCallbacks));
+}
+
+void
+GnssAdapter::convertOptions(LocPosMode& out, const LocationOptions& options)
+{
+    LocPosMode locPosMode = {};
+    switch (options.mode) {
+    case GNSS_SUPL_MODE_MSB:
+        out.mode = LOC_POSITION_MODE_MS_BASED;
+        break;
+    case GNSS_SUPL_MODE_MSA:
+        out.mode = LOC_POSITION_MODE_MS_ASSISTED;
+        break;
+    default:
+        out.mode = LOC_POSITION_MODE_STANDALONE;
+        break;
+    }
+    out.share_position = true;
+    out.min_interval = options.minInterval;
+}
+
+void
+GnssAdapter::convertLocation(Location& out, const LocGpsLocation& locGpsLocation,
+                             const GpsLocationExtended& locationExtended,
+                             const LocPosTechMask techMask)
+{
+    out.size = sizeof(Location);
+    if (LOC_GPS_LOCATION_HAS_LAT_LONG & locGpsLocation.flags) {
+        out.flags |= LOCATION_HAS_LAT_LONG_BIT;
+        out.latitude = locGpsLocation.latitude;
+        out.longitude = locGpsLocation.longitude;
+    }
+    if (LOC_GPS_LOCATION_HAS_ALTITUDE & locGpsLocation.flags) {
+        out.flags |= LOCATION_HAS_ALTITUDE_BIT;
+        out.altitude = locGpsLocation.altitude;
+    }
+    if (LOC_GPS_LOCATION_HAS_SPEED & locGpsLocation.flags) {
+        out.flags |= LOCATION_HAS_SPEED_BIT;
+        out.speed = locGpsLocation.speed;
+    }
+    if (LOC_GPS_LOCATION_HAS_BEARING & locGpsLocation.flags) {
+        out.flags |= LOCATION_HAS_BEARING_BIT;
+        out.bearing = locGpsLocation.bearing;
+    }
+    if (LOC_GPS_LOCATION_HAS_ACCURACY & locGpsLocation.flags) {
+        out.flags |= LOCATION_HAS_ACCURACY_BIT;
+        out.accuracy = locGpsLocation.accuracy;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_VERT_UNC & locationExtended.flags) {
+        out.flags |= LOCATION_HAS_VERTICAL_ACCURACY_BIT;
+        out.verticalAccuracy = locationExtended.vert_unc;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_SPEED_UNC & locationExtended.flags) {
+        out.flags |= LOCATION_HAS_SPEED_ACCURACY_BIT;
+        out.speedAccuracy = locationExtended.speed_unc;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_BEARING_UNC & locationExtended.flags) {
+        out.flags |= LOCATION_HAS_BEARING_ACCURACY_BIT;
+        out.bearingAccuracy = locationExtended.bearing_unc;
+    }
+    out.timestamp = locGpsLocation.timestamp;
+    if (LOC_POS_TECH_MASK_SATELLITE & techMask) {
+        out.techMask |= LOCATION_TECHNOLOGY_GNSS_BIT;
+    }
+    if (LOC_POS_TECH_MASK_CELLID & techMask) {
+        out.techMask |= LOCATION_TECHNOLOGY_CELL_BIT;
+    }
+    if (LOC_POS_TECH_MASK_WIFI & techMask) {
+        out.techMask |= LOCATION_TECHNOLOGY_WIFI_BIT;
+    }
+    if (LOC_POS_TECH_MASK_SENSORS & techMask) {
+        out.techMask |= LOCATION_TECHNOLOGY_SENSORS_BIT;
+    }
+}
+
+void
+GnssAdapter::convertLocationInfo(GnssLocationInfoNotification& out,
+                                 const GpsLocationExtended& locationExtended)
+{
+    out.size = sizeof(GnssLocationInfoNotification);
+    if (GPS_LOCATION_EXTENDED_HAS_ALTITUDE_MEAN_SEA_LEVEL & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_ALTITUDE_MEAN_SEA_LEVEL_BIT;
+        out.altitudeMeanSeaLevel = locationExtended.altitudeMeanSeaLevel;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_DOP & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_DOP_BIT;
+        out.pdop = locationExtended.pdop;
+        out.hdop = locationExtended.hdop;
+        out.vdop = locationExtended.vdop;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_MAG_DEV & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_MAGNETIC_DEVIATION_BIT;
+        out.magneticDeviation = locationExtended.magneticDeviation;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_HOR_RELIABILITY & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_HOR_RELIABILITY_BIT;
+        switch (locationExtended.horizontal_reliability) {
+            case LOC_RELIABILITY_VERY_LOW:
+                out.horReliability = LOCATION_RELIABILITY_VERY_LOW;
+                break;
+            case LOC_RELIABILITY_LOW:
+                out.horReliability = LOCATION_RELIABILITY_LOW;
+                break;
+            case LOC_RELIABILITY_MEDIUM:
+                out.horReliability = LOCATION_RELIABILITY_MEDIUM;
+                break;
+            case LOC_RELIABILITY_HIGH:
+                out.horReliability = LOCATION_RELIABILITY_HIGH;
+                break;
+            default:
+                out.horReliability = LOCATION_RELIABILITY_NOT_SET;
+                break;
+        }
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_VERT_RELIABILITY & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_VER_RELIABILITY_BIT;
+        switch (locationExtended.vertical_reliability) {
+            case LOC_RELIABILITY_VERY_LOW:
+                out.verReliability = LOCATION_RELIABILITY_VERY_LOW;
+                break;
+            case LOC_RELIABILITY_LOW:
+                out.verReliability = LOCATION_RELIABILITY_LOW;
+                break;
+            case LOC_RELIABILITY_MEDIUM:
+                out.verReliability = LOCATION_RELIABILITY_MEDIUM;
+                break;
+            case LOC_RELIABILITY_HIGH:
+                out.verReliability = LOCATION_RELIABILITY_HIGH;
+                break;
+            default:
+                out.verReliability = LOCATION_RELIABILITY_NOT_SET;
+                break;
+        }
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MAJOR & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MAJOR_BIT;
+        out.horUncEllipseSemiMajor = locationExtended.horUncEllipseSemiMajor;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MINOR & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MINOR_BIT;
+        out.horUncEllipseSemiMinor = locationExtended.horUncEllipseSemiMinor;
+    }
+    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_AZIMUTH & locationExtended.flags) {
+        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_AZIMUTH_BIT;
+        out.horUncEllipseOrientAzimuth = locationExtended.horUncEllipseOrientAzimuth;
+    }
+}
+
+inline uint32_t
+GnssAdapter::convertGpsLock(const GnssConfigGpsLock gpsLock)
+{
+    switch (gpsLock) {
+        case GNSS_CONFIG_GPS_LOCK_MO:
+            return 1;
+        case GNSS_CONFIG_GPS_LOCK_NI:
+            return 2;
+        case GNSS_CONFIG_GPS_LOCK_MO_AND_NI:
+            return 3;
+        case GNSS_CONFIG_GPS_LOCK_NONE:
+        default:
+            return 0;
+    }
+}
+
+inline GnssConfigGpsLock
+GnssAdapter::convertGpsLock(const uint32_t gpsLock)
+{
+    switch (gpsLock) {
+        case 1:
+            return GNSS_CONFIG_GPS_LOCK_MO;
+        case 2:
+            return GNSS_CONFIG_GPS_LOCK_NI;
+        case 3:
+            return GNSS_CONFIG_GPS_LOCK_MO_AND_NI;
+        case 0:
+        default:
+            return GNSS_CONFIG_GPS_LOCK_NONE;
+    }
+}
+
+inline uint32_t
+GnssAdapter::convertSuplVersion(const GnssConfigSuplVersion suplVersion)
+{
+    switch (suplVersion) {
+        case GNSS_CONFIG_SUPL_VERSION_2_0_0:
+            return 0x00020000;
+        case GNSS_CONFIG_SUPL_VERSION_2_0_2:
+            return 0x00020002;
+        case GNSS_CONFIG_SUPL_VERSION_1_0_0:
+        default:
+            return 0x00010000;
+    }
+}
+
+inline GnssConfigSuplVersion
+GnssAdapter::convertSuplVersion(const uint32_t suplVersion)
+{
+    switch (suplVersion) {
+        case 0x00020000:
+            return GNSS_CONFIG_SUPL_VERSION_2_0_0;
+        case 0x00020002:
+            return GNSS_CONFIG_SUPL_VERSION_2_0_2;
+        case 0x00010000:
+        default:
+            return GNSS_CONFIG_SUPL_VERSION_1_0_0;
+    }
+}
+
+inline uint32_t
+GnssAdapter::convertLppProfile(const GnssConfigLppProfile lppProfile)
+{
+    switch (lppProfile) {
+        case GNSS_CONFIG_LPP_PROFILE_USER_PLANE:
+            return 1;
+        case GNSS_CONFIG_LPP_PROFILE_CONTROL_PLANE:
+            return 2;
+        case GNSS_CONFIG_LPP_PROFILE_USER_PLANE_AND_CONTROL_PLANE:
+            return 3;
+        case GNSS_CONFIG_LPP_PROFILE_RRLP_ON_LTE:
+        default:
+            return 0;
+    }
+}
+
+inline GnssConfigLppProfile
+GnssAdapter::convertLppProfile(const uint32_t lppProfile)
+{
+    switch (lppProfile) {
+        case 1:
+            return GNSS_CONFIG_LPP_PROFILE_USER_PLANE;
+        case 2:
+            return GNSS_CONFIG_LPP_PROFILE_CONTROL_PLANE;
+        case 3:
+            return GNSS_CONFIG_LPP_PROFILE_USER_PLANE_AND_CONTROL_PLANE;
+        case 0:
+        default:
+            return GNSS_CONFIG_LPP_PROFILE_RRLP_ON_LTE;
+    }
+}
+
+uint32_t
+GnssAdapter::convertLppeCp(const GnssConfigLppeControlPlaneMask lppeControlPlaneMask)
+{
+    uint32_t mask = 0;
+    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_DBH_BIT & lppeControlPlaneMask) {
+        mask |= (1<<0);
+    }
+    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_WLAN_AP_MEASUREMENTS_BIT & lppeControlPlaneMask) {
+        mask |= (1<<1);
+    }
+    return mask;
+}
+
+GnssConfigLppeControlPlaneMask
+GnssAdapter::convertLppeCp(const uint32_t lppeControlPlaneMask)
+{
+    GnssConfigLppeControlPlaneMask mask = 0;
+    if ((1<<0) & lppeControlPlaneMask) {
+        mask |= GNSS_CONFIG_LPPE_CONTROL_PLANE_DBH_BIT;
+    }
+    if ((1<<1) & lppeControlPlaneMask) {
+        mask |= GNSS_CONFIG_LPPE_CONTROL_PLANE_WLAN_AP_MEASUREMENTS_BIT;
+    }
+    return mask;
+}
+
+
+uint32_t
+GnssAdapter::convertLppeUp(const GnssConfigLppeUserPlaneMask lppeUserPlaneMask)
+{
+    uint32_t mask = 0;
+    if (GNSS_CONFIG_LPPE_USER_PLANE_DBH_BIT & lppeUserPlaneMask) {
+        mask |= (1<<0);
+    }
+    if (GNSS_CONFIG_LPPE_USER_PLANE_WLAN_AP_MEASUREMENTS_BIT & lppeUserPlaneMask) {
+        mask |= (1<<1);
+    }
+    return mask;
+}
+
+GnssConfigLppeUserPlaneMask
+GnssAdapter::convertLppeUp(const uint32_t lppeUserPlaneMask)
+{
+    GnssConfigLppeUserPlaneMask mask = 0;
+    if ((1<<0) & lppeUserPlaneMask) {
+        mask |= GNSS_CONFIG_LPPE_USER_PLANE_DBH_BIT;
+    }
+    if ((1<<1) & lppeUserPlaneMask) {
+        mask |= GNSS_CONFIG_LPPE_USER_PLANE_WLAN_AP_MEASUREMENTS_BIT;
+    }
+    return mask;
+}
+
+uint32_t
+GnssAdapter::convertAGloProt(const GnssConfigAGlonassPositionProtocolMask aGloPositionProtocolMask)
+{
+    uint32_t mask = 0;
+    if (GNSS_CONFIG_RRC_CONTROL_PLANE_BIT & aGloPositionProtocolMask) {
+        mask |= (1<<0);
+    }
+    if (GNSS_CONFIG_RRLP_USER_PLANE_BIT & aGloPositionProtocolMask) {
+        mask |= (1<<1);
+    }
+    if (GNSS_CONFIG_LLP_USER_PLANE_BIT & aGloPositionProtocolMask) {
+        mask |= (1<<2);
+    }
+    if (GNSS_CONFIG_LLP_CONTROL_PLANE_BIT & aGloPositionProtocolMask) {
+        mask |= (1<<3);
+    }
+    return mask;
+}
+
+uint32_t
+GnssAdapter::convertEP4ES(const GnssConfigEmergencyPdnForEmergencySupl emergencyPdnForEmergencySupl)
+{
+    switch (emergencyPdnForEmergencySupl) {
+       case GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_YES:
+           return 1;
+       case GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_NO:
+       default:
+           return 0;
+    }
+}
+
+uint32_t
+GnssAdapter::convertSuplEs(const GnssConfigSuplEmergencyServices suplEmergencyServices)
+{
+    switch (suplEmergencyServices) {
+       case GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_YES:
+           return 1;
+       case GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_NO:
+       default:
+           return 0;
+    }
+}
+
+uint32_t
+GnssAdapter::convertSuplMode(const GnssConfigSuplModeMask suplModeMask)
+{
+    uint32_t mask = 0;
+    if (GNSS_CONFIG_SUPL_MODE_MSB & suplModeMask) {
+        mask |= (1<<0);
+    }
+    if (GNSS_CONFIG_SUPL_MODE_MSA & suplModeMask) {
+        mask |= (1<<1);
+    }
+    return mask;
+}
+
+bool
+GnssAdapter::resolveInAddress(const char* hostAddress, struct in_addr* inAddress)
+{
+    bool ret = true;
+
+    struct hostent* hp;
+    hp = gethostbyname(hostAddress);
+    if (hp != NULL) { /* DNS OK */
+        memcpy(inAddress, hp->h_addr_list[0], hp->h_length);
+    } else {
+        /* Try IP representation */
+        if (inet_aton(hostAddress, inAddress) == 0) {
+            /* IP not valid */
+            LOC_LOGE("%s]: DNS query on '%s' failed", __func__, hostAddress);
+            ret = false;
+        }
+    }
+
+    return ret;
+}
+
+void
+GnssAdapter::readConfigCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgReadConfig : public LocMsg {
+        GnssAdapter* mAdapter;
+        ContextBase& mContext;
+        inline MsgReadConfig(GnssAdapter* adapter,
+                             ContextBase& context) :
+            LocMsg(),
+            mAdapter(adapter),
+            mContext(context) {}
+        inline virtual void proc() const {
+            // reads config into mContext->mGps_conf
+            mContext.readConfig();
+            mContext.requestUlp((LocAdapterBase*)mAdapter, mContext.getCarrierCapabilities());
+        }
+    };
+
+    if (mContext != NULL) {
+        sendMsg(new MsgReadConfig(this, *mContext));
+    }
+}
+
+void
+GnssAdapter::setConfigCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgSetConfig : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgSetConfig(GnssAdapter& adapter,
+                            LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        inline virtual void proc() const {
+            if (ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                mApi.setSUPLVersion(mAdapter.convertSuplVersion(ContextBase::mGps_conf.SUPL_VER));
+                mApi.setLPPConfig(mAdapter.convertLppProfile(ContextBase::mGps_conf.LPP_PROFILE));
+                mApi.setAGLONASSProtocol(ContextBase::mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT);
+            }
+            mApi.setSensorControlConfig(ContextBase::mSap_conf.SENSOR_USAGE,
+                                        ContextBase::mSap_conf.SENSOR_PROVIDER);
+            mApi.setLPPeProtocolCp(
+                mAdapter.convertLppeCp(ContextBase::mGps_conf.LPPE_CP_TECHNOLOGY));
+            mApi.setLPPeProtocolUp(
+                mAdapter.convertLppeUp(ContextBase::mGps_conf.LPPE_UP_TECHNOLOGY));
+
+            // set nmea mask type
+            uint32_t mask = 0;
+            if (NMEA_PROVIDER_MP == ContextBase::mGps_conf.NMEA_PROVIDER) {
+                mask = LOC_NMEA_ALL_SUPPORTED_MASK;
+            } else {
+                mask = LOC_NMEA_MASK_DEBUG_V02;
+            }
+            mApi.setNMEATypes(mask);
+
+            mApi.setXtraVersionCheck(ContextBase::mGps_conf.XTRA_VERSION_CHECK);
+            if (ContextBase::mSap_conf.GYRO_BIAS_RANDOM_WALK_VALID ||
+                ContextBase::mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
+                ContextBase::mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
+                ContextBase::mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
+                ContextBase::mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID ) {
+                mApi.setSensorProperties(
+                    ContextBase::mSap_conf.GYRO_BIAS_RANDOM_WALK_VALID,
+                    ContextBase::mSap_conf.GYRO_BIAS_RANDOM_WALK,
+                    ContextBase::mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
+                    ContextBase::mSap_conf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY,
+                    ContextBase::mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
+                    ContextBase::mSap_conf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY,
+                    ContextBase::mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
+                    ContextBase::mSap_conf.RATE_RANDOM_WALK_SPECTRAL_DENSITY,
+                    ContextBase::mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
+                    ContextBase::mSap_conf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY);
+            }
+            mApi.setSensorPerfControlConfig(
+                ContextBase::mSap_conf.SENSOR_CONTROL_MODE,
+                   ContextBase::mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH,
+                   ContextBase::mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC,
+                   ContextBase::mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH,
+                   ContextBase::mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC,
+                   ContextBase::mSap_conf.SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH,
+                   ContextBase::mSap_conf.SENSOR_ACCEL_BATCHES_PER_SEC_HIGH,
+                   ContextBase::mSap_conf.SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH,
+                   ContextBase::mSap_conf.SENSOR_GYRO_BATCHES_PER_SEC_HIGH,
+                   ContextBase::mSap_conf.SENSOR_ALGORITHM_CONFIG_MASK);
+        }
+    };
+
+    sendMsg(new MsgSetConfig(*this, *mLocApi));
+}
+
+uint32_t*
+GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
+{
+    // count the number of bits set
+    GnssConfigFlagsMask flagsCopy = config.flags;
+    size_t count = 0;
+    while (flagsCopy > 0) {
+        if (flagsCopy & 1) {
+            count++;
+        }
+        flagsCopy >>= 1;
+    }
+    std::string idsString = "[";
+    uint32_t* ids = NULL;
+    if (count > 0) {
+        ids = new uint32_t[count];
+        for (size_t i=0; i < count; ++i) {
+            ids[i] = generateSessionId();
+            IF_LOC_LOGD {
+                idsString += std::to_string(ids[i]) + " ";
+            }
+        }
+    }
+    idsString += "]";
+
+    LOC_LOGD("%s]: ids %s flags 0x%X", __func__, idsString.c_str(), config.flags);
+
+    struct MsgGnssUpdateConfig : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        GnssConfig mConfig;
+        uint32_t* mIds;
+        size_t mCount;
+        inline MsgGnssUpdateConfig(GnssAdapter& adapter,
+                                   LocApiBase& api,
+                                   GnssConfig config,
+                                   uint32_t* ids,
+                                   size_t count) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mConfig(config),
+            mIds(ids),
+            mCount(count) {}
+        inline virtual ~MsgGnssUpdateConfig()
+        {
+            delete[] mIds;
+        }
+        inline virtual void proc() const {
+            //const size_t MAX_BITS_COUNT = 10;
+            //LocationError errs[MAX_BITS_COUNT] = {};
+            LocationError* errs = new LocationError[mCount];
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            uint32_t index = 0;
+
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
+                uint32_t newGpsLock = mAdapter.convertGpsLock(mConfig.gpsLock);
+                ContextBase::mGps_conf.GPS_LOCK = newGpsLock;
+                if (0 == mAdapter.getPowerVoteId()) {
+                    err = mApi.setGpsLock(mConfig.gpsLock);
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
+                uint32_t newSuplVersion = mAdapter.convertSuplVersion(mConfig.suplVersion);
+                if (newSuplVersion != ContextBase::mGps_conf.SUPL_VER &&
+                    ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                    ContextBase::mGps_conf.SUPL_VER = newSuplVersion;
+                    err = mApi.setSUPLVersion(mConfig.suplVersion);
+                } else {
+                    err = LOCATION_ERROR_SUCCESS;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
+                if (GNSS_ASSISTANCE_TYPE_SUPL == mConfig.assistanceServer.type) {
+                    if (ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                        char serverUrl[MAX_URL_LEN] = {};
+                        uint32_t length = 0;
+                        const char noHost[] = "NONE";
+                        if (NULL == mConfig.assistanceServer.hostName ||
+                            strncasecmp(noHost,
+                                        mConfig.assistanceServer.hostName,
+                                        sizeof(noHost)) == 0) {
+                        } else {
+                            length = snprintf(serverUrl, sizeof(serverUrl), "%s:%u",
+                                              mConfig.assistanceServer.hostName,
+                                              mConfig.assistanceServer.port);
+                        }
+
+                        if (sizeof(serverUrl) > length) {
+                            err = mApi.setServer(serverUrl, length);
+                        } else {
+                            err = LOCATION_ERROR_INVALID_PARAMETER;
+                        }
+                    } else {
+                        err = LOCATION_ERROR_SUCCESS;
+                    }
+                } else if (GNSS_ASSISTANCE_TYPE_C2K == mConfig.assistanceServer.type) {
+                    if (ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                        struct in_addr addr;
+                        if (!mAdapter.resolveInAddress(mConfig.assistanceServer.hostName, &addr)) {
+                            LOC_LOGE("%s]: hostName %s cannot be resolved",
+                                     __func__, mConfig.assistanceServer.hostName);
+                            err = LOCATION_ERROR_INVALID_PARAMETER;
+                        } else {
+                            unsigned int ip = htonl(addr.s_addr);
+                            err = mApi.setServer(ip, mConfig.assistanceServer.port,
+                                                    LOC_AGPS_CDMA_PDE_SERVER);
+                        }
+                    } else {
+                        err = LOCATION_ERROR_SUCCESS;
+                    }
+                } else {
+                    LOC_LOGE("%s]: Not a valid gnss assistance type %u",
+                             __func__, mConfig.assistanceServer.type);
+                    err = LOCATION_ERROR_INVALID_PARAMETER;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
+                uint32_t newLppProfile = mAdapter.convertLppProfile(mConfig.lppProfile);
+                if (newLppProfile != ContextBase::mGps_conf.LPP_PROFILE &&
+                    ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                    ContextBase::mGps_conf.LPP_PROFILE = newLppProfile;
+                    err = mApi.setLPPConfig(mConfig.lppProfile);
+                } else {
+                    err = LOCATION_ERROR_SUCCESS;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
+                uint32_t newLppeControlPlaneMask =
+                    mAdapter.convertLppeCp(mConfig.lppeControlPlaneMask);
+                if (newLppeControlPlaneMask != ContextBase::mGps_conf.LPPE_CP_TECHNOLOGY) {
+                    ContextBase::mGps_conf.LPPE_CP_TECHNOLOGY = newLppeControlPlaneMask;
+                    err = mApi.setLPPeProtocolCp(mConfig.lppeControlPlaneMask);
+                } else {
+                    err = LOCATION_ERROR_SUCCESS;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
+                uint32_t newLppeUserPlaneMask =
+                    mAdapter.convertLppeUp(mConfig.lppeUserPlaneMask);
+                if (newLppeUserPlaneMask != ContextBase::mGps_conf.LPPE_UP_TECHNOLOGY) {
+                    ContextBase::mGps_conf.LPPE_UP_TECHNOLOGY = newLppeUserPlaneMask;
+                    err = mApi.setLPPeProtocolUp(mConfig.lppeUserPlaneMask);
+                } else {
+                    err = LOCATION_ERROR_SUCCESS;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
+                uint32_t newAGloProtMask =
+                    mAdapter.convertAGloProt(mConfig.aGlonassPositionProtocolMask);
+                if (newAGloProtMask != ContextBase::mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT &&
+                    ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
+                    ContextBase::mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT = newAGloProtMask;
+                    err = mApi.setAGLONASSProtocol(mConfig.aGlonassPositionProtocolMask);
+                } else {
+                    err = LOCATION_ERROR_SUCCESS;
+                }
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
+                uint32_t newEP4ES = mAdapter.convertEP4ES(mConfig.emergencyPdnForEmergencySupl);
+                if (newEP4ES != ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL) {
+                    ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL = newEP4ES;
+                }
+                err = LOCATION_ERROR_SUCCESS;
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
+                uint32_t newSuplEs = mAdapter.convertSuplEs(mConfig.suplEmergencyServices);
+                if (newSuplEs != ContextBase::mGps_conf.SUPL_ES) {
+                    ContextBase::mGps_conf.SUPL_ES = newSuplEs;
+                }
+                err = LOCATION_ERROR_SUCCESS;
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+            if (mConfig.flags & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
+                uint32_t newSuplMode = mAdapter.convertSuplMode(mConfig.suplModeMask);
+                if (newSuplMode != ContextBase::mGps_conf.SUPL_MODE) {
+                    ContextBase::mGps_conf.SUPL_MODE = newSuplMode;
+                    mAdapter.getUlpProxy()->setCapabilities(
+                        ContextBase::getCarrierCapabilities());
+                }
+                err = LOCATION_ERROR_SUCCESS;
+                if (index < mCount) {
+                    errs[index++] = err;
+                }
+            }
+
+            mAdapter.reportResponse(index, errs, mIds);
+            delete[] errs;
+        }
+    };
+
+    if (NULL != ids) {
+        sendMsg(new MsgGnssUpdateConfig(*this, *mLocApi, config, ids, count));
+    } else {
+        LOC_LOGE("%s]: No GNSS config items to update", __func__);
+    }
+
+    return ids;
+}
+
+uint32_t
+GnssAdapter::gnssDeleteAidingDataCommand(GnssAidingData& data)
+{
+    uint32_t sessionId = generateSessionId();
+    LOC_LOGD("%s]: id %u", __func__, sessionId);
+
+    struct MsgDeleteAidingData : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        uint32_t mSessionId;
+        GnssAidingData mData;
+        inline MsgDeleteAidingData(GnssAdapter& adapter,
+                                   LocApiBase& api,
+                                   uint32_t sessionId,
+                                   GnssAidingData& data) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mSessionId(sessionId),
+            mData(data) {}
+        inline virtual void proc() const {
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            err = mApi.deleteAidingData(mData);
+            mAdapter.reportResponse(err, mSessionId);
+        }
+    };
+
+    sendMsg(new MsgDeleteAidingData(*this, *mLocApi, sessionId, data));
+    return sessionId;
+}
+
+void
+GnssAdapter::injectLocationCommand(double latitude, double longitude, float accuracy)
+{
+    LOC_LOGD("%s]: latitude %8.4f longitude %8.4f accuracy %8.4f",
+             __func__, latitude, longitude, accuracy);
+
+    struct MsgInjectLocation : public LocMsg {
+        LocApiBase& mApi;
+        ContextBase& mContext;
+        double mLatitude;
+        double mLongitude;
+        float mAccuracy;
+        inline MsgInjectLocation(LocApiBase& api,
+                                 ContextBase& context,
+                                 double latitude,
+                                 double longitude,
+                                 float accuracy) :
+            LocMsg(),
+            mApi(api),
+            mContext(context),
+            mLatitude(latitude),
+            mLongitude(longitude),
+            mAccuracy(accuracy) {}
+        inline virtual void proc() const {
+            if (!mContext.hasCPIExtendedCapabilities()) {
+                mApi.injectPosition(mLatitude, mLongitude, mAccuracy);
+            }
+        }
+    };
+
+    sendMsg(new MsgInjectLocation(*mLocApi, *mContext, latitude, longitude, accuracy));
+}
+
+void
+GnssAdapter::injectTimeCommand(int64_t time, int64_t timeReference, int32_t uncertainty)
+{
+    LOC_LOGD("%s]: time %lld timeReference %lld uncertainty %d",
+             __func__, (long long)time, (long long)timeReference, uncertainty);
+
+    struct MsgInjectTime : public LocMsg {
+        LocApiBase& mApi;
+        ContextBase& mContext;
+        int64_t mTime;
+        int64_t mTimeReference;
+        int32_t mUncertainty;
+        inline MsgInjectTime(LocApiBase& api,
+                             ContextBase& context,
+                             int64_t time,
+                             int64_t timeReference,
+                             int32_t uncertainty) :
+            LocMsg(),
+            mApi(api),
+            mContext(context),
+            mTime(time),
+            mTimeReference(timeReference),
+            mUncertainty(uncertainty) {}
+        inline virtual void proc() const {
+            mApi.setTime(mTime, mTimeReference, mUncertainty);
+        }
+    };
+
+    sendMsg(new MsgInjectTime(*mLocApi, *mContext, time, timeReference, uncertainty));
+}
+
+void
+GnssAdapter::setUlpProxyCommand(UlpProxyBase* ulp)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgSetUlpProxy : public LocMsg {
+        GnssAdapter& mAdapter;
+        UlpProxyBase* mUlp;
+        inline MsgSetUlpProxy(GnssAdapter& adapter,
+                              UlpProxyBase* ulp) :
+            LocMsg(),
+            mAdapter(adapter),
+            mUlp(ulp) {}
+        inline virtual void proc() const {
+            mAdapter.setUlpProxy(mUlp);
+            if (mUlp) {
+                mUlp->setCapabilities(ContextBase::getCarrierCapabilities());
+            }
+        }
+    };
+
+    sendMsg(new MsgSetUlpProxy(*this, ulp));
+}
+
+void
+GnssAdapter::setUlpProxy(UlpProxyBase* ulp)
+{
+    if (ulp == mUlpProxy) {
+        //This takes care of the case when double initalization happens
+        //and we get the same object back for UlpProxyBase . Do nothing
+        return;
+    }
+
+    LOC_LOGV("%s]: %p", __func__, ulp);
+    if (NULL == ulp) {
+        LOC_LOGE("%s]: ulp pointer is NULL", __func__);
+        ulp = new UlpProxyBase();
+    }
+
+    if (LOC_POSITION_MODE_INVALID != mUlpProxy->mPosMode.mode) {
+        // need to send this mode and start msg to ULP
+        ulp->sendFixMode(mUlpProxy->mPosMode);
+    }
+
+    if (mUlpProxy->mFixSet) {
+        ulp->sendStartFix();
+    }
+
+    delete mUlpProxy;
+    mUlpProxy = ulp;
+}
+
+void
+GnssAdapter::addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+    struct MsgAddClient : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocationAPI* mClient;
+        const LocationCallbacks mCallbacks;
+        inline MsgAddClient(GnssAdapter& adapter,
+                            LocationAPI* client,
+                            const LocationCallbacks& callbacks) :
+            LocMsg(),
+            mAdapter(adapter),
+            mClient(client),
+            mCallbacks(callbacks) {}
+        inline virtual void proc() const {
+            mAdapter.saveClient(mClient, mCallbacks);
+        }
+    };
+
+    sendMsg(new MsgAddClient(*this, client, callbacks));
+}
+
+void
+GnssAdapter::removeClientCommand(LocationAPI* client)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+    struct MsgRemoveClient : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocationAPI* mClient;
+        inline MsgRemoveClient(GnssAdapter& adapter,
+                               LocationAPI* client) :
+            LocMsg(),
+            mAdapter(adapter),
+            mClient(client) {}
+        inline virtual void proc() const {
+            mAdapter.stopClientSessions(mClient);
+            mAdapter.eraseClient(mClient);
+        }
+    };
+
+    sendMsg(new MsgRemoveClient(*this, client));
+}
+
+void
+GnssAdapter::stopClientSessions(LocationAPI* client)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+    for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end();) {
+        if (client == it->first.client) {
+            LocationError err = stopTrackingMultiplex(it->first.client, it->first.id);
+            if (LOCATION_ERROR_SUCCESS == err) {
+                it = mTrackingSessions.erase(it);
+                continue;
+            }
+        }
+        ++it; // increment only when not erasing an iterator
+    }
+
+}
+
+void
+GnssAdapter::updateClientsEventMask()
+{
+    LOC_API_ADAPTER_EVENT_MASK_T mask = 0;
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (it->second.trackingCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_PARSED_POSITION_REPORT;
+        }
+        if (it->second.gnssNiCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_NI_NOTIFY_VERIFY_REQUEST;
+        }
+        if (it->second.gnssSvCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_SATELLITE_REPORT;
+        }
+        if (it->second.gnssNmeaCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT;
+        }
+        if (it->second.gnssMeasurementsCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT;
+        }
+    }
+
+    /*
+    ** For Automotive use cases we need to enable MEASUREMENT and POLY
+    ** when QDR is enabled
+    */
+    if(1 == ContextBase::mGps_conf.EXTERNAL_DR_ENABLED) {
+        mask |= LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT;
+        mask |= LOC_API_ADAPTER_BIT_GNSS_SV_POLYNOMIAL_REPORT;
+
+        LOC_LOGD("%s]: Auto usecase, Enable MEAS/POLY - mask 0x%x", __func__, mask);
+    }
+
+    updateEvtMask(mask, LOC_REGISTRATION_MASK_SET);
+}
+
+void
+GnssAdapter::handleEngineUpEvent()
+{
+    struct MsgRestartSessions : public LocMsg {
+        GnssAdapter& mAdapter;
+        inline MsgRestartSessions(GnssAdapter& adapter) :
+            LocMsg(),
+            mAdapter(adapter) {}
+        virtual void proc() const {
+            mAdapter.restartSessions();
+        }
+    };
+
+    setConfigCommand();
+    sendMsg(new MsgRestartSessions(*this));
+}
+
+void
+GnssAdapter::restartSessions()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    if (mTrackingSessions.empty()) {
+        return;
+    }
+
+    // get the LocationOptions that has the smallest interval, which should be the active one
+    LocationOptions smallestIntervalOptions = {}; // size is zero until set for the first time
+    for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end(); ++it) {
+        if (0 == smallestIntervalOptions.size || //size of zero means we havent set it yet
+            it->second.minInterval < smallestIntervalOptions.minInterval) {
+             smallestIntervalOptions = it->second;
+        }
+    }
+
+    startTracking(smallestIntervalOptions);
+}
+
+void
+GnssAdapter::requestCapabilitiesCommand(LocationAPI* client)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgRequestCapabilities : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        inline MsgRequestCapabilities(GnssAdapter& adapter,
+                                      LocApiBase& api,
+                                      LocationAPI* client) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client) {}
+        inline virtual void proc() const {
+            LocationCallbacks callbacks = mAdapter.getClientCallbacks(mClient);
+            if (callbacks.capabilitiesCb == nullptr) {
+                LOC_LOGE("%s]: capabilitiesCb is NULL", __func__);
+                return;
+            }
+
+            LocationCapabilitiesMask mask = {};
+            // time based tracking always supported
+            mask |= LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT;
+            if (mApi.isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING)){
+                mask |= LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT |
+                        LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT;
+            }
+            if (mApi.isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
+                mask |= LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT;
+            }
+            // geofence always supported
+            mask |= LOCATION_CAPABILITIES_GEOFENCE_BIT;
+            if (mApi.gnssConstellationConfig()) {
+                mask |= LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT;
+            }
+            uint32_t carrierCapabilities = ContextBase::getCarrierCapabilities();
+            if (carrierCapabilities & LOC_GPS_CAPABILITY_MSB) {
+                mask |= LOCATION_CAPABILITIES_GNSS_MSB_BIT;
+            }
+            if (LOC_GPS_CAPABILITY_MSA & carrierCapabilities) {
+                mask |= LOCATION_CAPABILITIES_GNSS_MSA_BIT;
+            }
+
+            callbacks.capabilitiesCb(mask);
+        }
+    };
+
+    sendMsg(new MsgRequestCapabilities(*this, *mLocApi, client));
+}
+
+LocationCallbacks
+GnssAdapter::getClientCallbacks(LocationAPI* client)
+{
+    LocationCallbacks callbacks = {};
+    auto it = mClientData.find(client);
+    if (it != mClientData.end()) {
+        callbacks = it->second;
+    }
+    return callbacks;
+}
+
+void
+GnssAdapter::saveClient(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    mClientData[client] = callbacks;
+    updateClientsEventMask();
+}
+
+void
+GnssAdapter::eraseClient(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    if (it != mClientData.end()) {
+        mClientData.erase(it);
+    }
+    updateClientsEventMask();
+}
+
+bool
+GnssAdapter::hasTrackingCallback(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    return (it != mClientData.end() && it->second.trackingCb);
+}
+
+bool
+GnssAdapter::hasMeasurementsCallback(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    return (it != mClientData.end() && it->second.gnssMeasurementsCb);
+}
+
+bool
+GnssAdapter::isTrackingSession(LocationAPI* client, uint32_t sessionId)
+{
+    LocationSessionKey key(client, sessionId);
+    return (mTrackingSessions.find(key) != mTrackingSessions.end());
+}
+
+void
+GnssAdapter::saveTrackingSession(LocationAPI* client, uint32_t sessionId,
+                                 const LocationOptions& options)
+{
+    LocationSessionKey key(client, sessionId);
+    mTrackingSessions[key] = options;
+}
+
+void
+GnssAdapter::eraseTrackingSession(LocationAPI* client, uint32_t sessionId)
+{
+    LocationSessionKey key(client, sessionId);
+    auto it = mTrackingSessions.find(key);
+    if (it != mTrackingSessions.end()) {
+        mTrackingSessions.erase(it);
+    }
+
+}
+
+void
+GnssAdapter::reportResponse(LocationAPI* client, LocationError err, uint32_t sessionId)
+{
+    LOC_LOGD("%s]: client %p id %u err %u", __func__, client, sessionId, err);
+
+    auto it = mClientData.find(client);
+    if (it != mClientData.end() &&
+        it->second.responseCb != nullptr) {
+        it->second.responseCb(err, sessionId);
+    } else {
+        LOC_LOGW("%s]: client %p id %u not found in data", __func__, client, sessionId);
+    }
+}
+
+void
+GnssAdapter::reportResponse(LocationError err, uint32_t sessionId)
+{
+    LOC_LOGD("%s]: id %u err %u", __func__, sessionId, err);
+
+    if (mControlCallbacks.size > 0 && mControlCallbacks.responseCb != nullptr) {
+        mControlCallbacks.responseCb(err, sessionId);
+    } else {
+        LOC_LOGW("%s]: control client response callback not found", __func__);
+    }
+}
+
+void
+GnssAdapter::reportResponse(size_t count, LocationError* errs, uint32_t* ids)
+{
+    IF_LOC_LOGD {
+        std::string idsString = "[";
+        std::string errsString = "[";
+        if (NULL != ids && NULL != errs) {
+            for (size_t i=0; i < count; ++i) {
+                idsString += std::to_string(ids[i]) + " ";
+                errsString += std::to_string(errs[i]) + " ";
+            }
+        }
+        idsString += "]";
+        errsString += "]";
+
+        LOC_LOGD("%s]: ids %s errs %s",
+                 __func__, idsString.c_str(), errsString.c_str());
+    }
+
+    if (mControlCallbacks.size > 0 && mControlCallbacks.collectiveResponseCb != nullptr) {
+        mControlCallbacks.collectiveResponseCb(count, errs, ids);
+    } else {
+        LOC_LOGW("%s]: control client callback not found", __func__);
+    }
+}
+
+uint32_t
+GnssAdapter::startTrackingCommand(LocationAPI* client, LocationOptions& options)
+{
+    uint32_t sessionId = generateSessionId();
+    LOC_LOGD("%s]: client %p id %u minInterval %u mode %u",
+             __func__, client, sessionId, options.minInterval, options.mode);
+
+    struct MsgStartTracking : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        LocationOptions mOptions;
+        inline MsgStartTracking(GnssAdapter& adapter,
+                               LocApiBase& api,
+                               LocationAPI* client,
+                               uint32_t sessionId,
+                               LocationOptions options) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId),
+            mOptions(options) {}
+        inline virtual void proc() const {
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            if (!mAdapter.hasTrackingCallback(mClient) &&
+                !mAdapter.hasMeasurementsCallback(mClient)) {
+                err = LOCATION_ERROR_CALLBACK_MISSING;
+            } else if (0 == mOptions.size) {
+                err = LOCATION_ERROR_INVALID_PARAMETER;
+            } else {
+                // Api doesn't support multiple clients for time based tracking, so mutiplex
+                err = mAdapter.startTrackingMultiplex(mOptions);
+                if (LOCATION_ERROR_SUCCESS == err) {
+                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
+                }
+            }
+            mAdapter.reportResponse(mClient, err, mSessionId);
+        }
+    };
+
+    sendMsg(new MsgStartTracking(*this, *mLocApi, client, sessionId, options));
+    return sessionId;
+
+}
+
+LocationError
+GnssAdapter::startTrackingMultiplex(const LocationOptions& options)
+{
+    LocationError err = LOCATION_ERROR_SUCCESS;
+    bool updateTrackingSession = false;
+
+    if (mTrackingSessions.empty()) {
+        err = startTracking(options);
+    } else {
+        // get the LocationOptions that has the smallest interval, which should be the active one
+        LocationOptions smallestIntervalOptions = {}; // size is zero until set for the first time
+        for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end(); ++it) {
+            if (0 == smallestIntervalOptions.size || //size of zero means we havent set it yet
+                it->second.minInterval < smallestIntervalOptions.minInterval) {
+                 smallestIntervalOptions = it->second;
+            }
+        }
+        // if new session's minInterval is smaller than any in other sessions
+        if (options.minInterval < smallestIntervalOptions.minInterval) {
+            // restart time based tracking with new options
+            err = startTracking(options);
+        }
+    }
+
+    return err;
+}
+
+LocationError
+GnssAdapter::startTracking(const LocationOptions& options)
+{
+    LocationError err = LOCATION_ERROR_SUCCESS;
+    LocPosMode locPosMode = {};
+    convertOptions(locPosMode, options);
+    if (!mUlpProxy->sendFixMode(locPosMode)) {
+        // do nothing
+    }
+    if (!mUlpProxy->sendStartFix()) {
+        loc_api_adapter_err apiErr = mLocApi->startFix(locPosMode);
+        if (LOC_API_ADAPTER_ERR_SUCCESS == apiErr) {
+            err = LOCATION_ERROR_SUCCESS;
+        } else {
+            err = LOCATION_ERROR_GENERAL_FAILURE;
+        }
+    }
+
+    return err;
+}
+
+void
+GnssAdapter::setPositionModeCommand(LocPosMode& locPosMode)
+{
+    LOC_LOGD("%s]: min_interval %u mode %u",
+             __func__, locPosMode.min_interval, locPosMode.mode);
+
+    struct MsgSetPositionMode : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocPosMode mLocPosMode;
+        inline MsgSetPositionMode(GnssAdapter& adapter,
+                                  LocApiBase& api,
+                                  LocPosMode& locPosMode) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mLocPosMode(locPosMode) {}
+        inline virtual void proc() const {
+             // saves the mode in adapter to be used when startTrackingCommand is called from ULP
+            mAdapter.setUlpPositionMode(mLocPosMode);
+            mApi.setPositionMode(mLocPosMode);
+        }
+    };
+
+    sendMsg(new MsgSetPositionMode(*this, *mLocApi, locPosMode));
+}
+
+void
+GnssAdapter::startTrackingCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgStartTracking : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgStartTracking(GnssAdapter& adapter,
+                                LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        inline virtual void proc() const {
+            // we get this call from ULP, so just call LocApi without multiplexing because
+            // ulp would be doing the multiplexing for us if it is present
+            LocPosMode& ulpPositionMode = mAdapter.getUlpPositionMode();
+            mApi.startFix(ulpPositionMode);
+        }
+    };
+
+    sendMsg(new MsgStartTracking(*this, *mLocApi));
+}
+
+void
+GnssAdapter::updateTrackingOptionsCommand(LocationAPI* client, uint32_t id,
+                                          LocationOptions& options)
+{
+    LOC_LOGD("%s]: client %p id %u minInterval %u mode %u",
+             __func__, client, id, options.minInterval, options.mode);
+
+    struct MsgUpdateTracking : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        LocationOptions mOptions;
+        inline MsgUpdateTracking(GnssAdapter& adapter,
+                                LocApiBase& api,
+                                LocationAPI* client,
+                                uint32_t sessionId,
+                                LocationOptions options) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId),
+            mOptions(options) {}
+        inline virtual void proc() const {
+            if (mAdapter.isTrackingSession(mClient, mSessionId)) {
+                LocationError err = LOCATION_ERROR_SUCCESS;
+                if (0 == mOptions.size) {
+                    err = LOCATION_ERROR_INVALID_PARAMETER;
+                } else {
+                    // Api doesn't support multiple clients for time based tracking, so mutiplex
+                    err = mAdapter.startTrackingMultiplex(mOptions);
+                    if (LOCATION_ERROR_SUCCESS == err) {
+                        mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
+                    }
+                }
+                mAdapter.reportResponse(mClient, err, mSessionId);
+            }
+            // we do not reportResponse for the case where there is no existing tracking session
+            // for the client and id being used, since updateTrackingCommand can be sent to both
+            // GnssAdapter & FlpAdapter by LocationAPI and we want to avoid incorrect error response
+        }
+    };
+
+    sendMsg(new MsgUpdateTracking(*this, *mLocApi, client, id, options));
+}
+
+void
+GnssAdapter::stopTrackingCommand(LocationAPI* client, uint32_t id)
+{
+    LOC_LOGD("%s]: client %p id %u", __func__, client, id);
+
+    struct MsgStopTracking : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        inline MsgStopTracking(GnssAdapter& adapter,
+                               LocApiBase& api,
+                               LocationAPI* client,
+                               uint32_t sessionId) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId) {}
+        inline virtual void proc() const {
+            if (mAdapter.isTrackingSession(mClient, mSessionId)) {
+                LocationError err = LOCATION_ERROR_SUCCESS;
+                // Api doesn't support multiple clients for time based tracking, so mutiplex
+                err = mAdapter.stopTrackingMultiplex(mClient, mSessionId);
+                if (LOCATION_ERROR_SUCCESS == err) {
+                    mAdapter.eraseTrackingSession(mClient, mSessionId);
+                }
+                mAdapter.reportResponse(mClient, err, mSessionId);
+            }
+            // we do not reportResponse for the case where there is no existing tracking session
+            // for the client and id being used, since stopTrackingCommand can be sent to both
+            // GnssAdapter & FlpAdapter by LocationAPI and we want to avoid incorrect error response
+
+        }
+    };
+
+    sendMsg(new MsgStopTracking(*this, *mLocApi, client, id));
+}
+
+LocationError
+GnssAdapter::stopTrackingMultiplex(LocationAPI* client, uint32_t id)
+{
+    LocationError err = LOCATION_ERROR_SUCCESS;
+
+    if (1 == mTrackingSessions.size()) {
+        err = stopTracking();
+    } else {
+        LocationSessionKey key(client, id);
+
+        // get the session we are stopping
+        auto it = mTrackingSessions.find(key);
+        if (it != mTrackingSessions.end()) {
+            // find the next smallest interval, other than the session we are stopping
+            LocationOptions smallestIntervalOptions; // size will be zero until set for the first time
+            for (auto it2 = mTrackingSessions.begin(); it2 != mTrackingSessions.end(); ++it2) {
+                // if session is not the one we are stopping and either smallest interval is not set
+                // or there is a new smallest interval, then set the new smallest interval
+                if (it2->first != key && (0 == smallestIntervalOptions.size ||
+                    it2->second.minInterval < smallestIntervalOptions.minInterval)) {
+                     smallestIntervalOptions = it2->second;
+                }
+            }
+            // if session we are stopping has smaller interval then next smallest
+            if (it->second.minInterval < smallestIntervalOptions.minInterval) {
+                // restart time based tracking with next smallest interval
+                err = startTracking(smallestIntervalOptions);
+            }
+        }
+    }
+
+    return err;
+}
+
+LocationError
+GnssAdapter::stopTracking()
+{
+    LocationError err = LOCATION_ERROR_SUCCESS;
+    if (!mUlpProxy->sendStopFix()) {
+        loc_api_adapter_err apiErr = mLocApi->stopFix();
+        if (LOC_API_ADAPTER_ERR_SUCCESS == apiErr) {
+            err = LOCATION_ERROR_SUCCESS;
+        } else {
+            err = LOCATION_ERROR_GENERAL_FAILURE;
+        }
+    }
+
+    return err;
+}
+
+void
+GnssAdapter::stopTrackingCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgStopTracking : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgStopTracking(GnssAdapter& adapter,
+                               LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        inline virtual void proc() const {
+            // clear the position mode
+            LocPosMode mLocPosMode = {};
+            mLocPosMode.mode = LOC_POSITION_MODE_INVALID;
+            mAdapter.setUlpPositionMode(mLocPosMode);
+            // don't need to multiplex because ULP will do that for us if it is present
+            mApi.stopFix();
+        }
+    };
+
+    sendMsg(new MsgStopTracking(*this, *mLocApi));
+}
+
+void
+GnssAdapter::getZppCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgGetZpp : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgGetZpp(GnssAdapter& adapter,
+                         LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        inline virtual void proc() const {
+            UlpLocation location = {};
+            LocPosTechMask techMask = LOC_POS_TECH_MASK_DEFAULT;
+            GpsLocationExtended locationExtended = {};
+            locationExtended.size = sizeof(locationExtended);
+
+            mApi.getBestAvailableZppFix(location.gpsLocation, techMask);
+            //Mark the location source as from ZPP
+            location.gpsLocation.flags |= LOCATION_HAS_SOURCE_INFO;
+            location.position_source = ULP_LOCATION_IS_FROM_ZPP;
+
+            mAdapter.getUlpProxy()->reportPosition(location,
+                                                   locationExtended,
+                                                   LOC_SESS_SUCCESS,
+                                                   techMask);
+        }
+    };
+
+    sendMsg(new MsgGetZpp(*this, *mLocApi));
+}
+
+bool
+GnssAdapter::hasNiNotifyCallback(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    return (it != mClientData.end() && it->second.gnssNiCb);
+}
+
+void
+GnssAdapter::gnssNiResponseCommand(LocationAPI* client,
+                                   uint32_t id,
+                                   GnssNiResponse response)
+{
+    LOC_LOGD("%s]: client %p id %u response %u", __func__, client, id, response);
+
+    struct MsgGnssNiResponse : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        GnssNiResponse mResponse;
+        inline MsgGnssNiResponse(GnssAdapter& adapter,
+                                 LocationAPI* client,
+                                 uint32_t sessionId,
+                                 GnssNiResponse response) :
+            LocMsg(),
+            mAdapter(adapter),
+            mClient(client),
+            mSessionId(sessionId),
+            mResponse(response) {}
+        inline virtual void proc() const {
+            NiData& niData = mAdapter.getNiData();
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            if (!mAdapter.hasNiNotifyCallback(mClient)) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            } else {
+                NiSession* pSession = NULL;
+                if (mSessionId == niData.sessionEs.reqID &&
+                    NULL != niData.sessionEs.rawRequest) {
+                    pSession = &niData.sessionEs;
+                    // ignore any SUPL NI non-Es session if a SUPL NI ES is accepted
+                    if (mResponse == GNSS_NI_RESPONSE_ACCEPT &&
+                        NULL != niData.session.rawRequest) {
+                            pthread_mutex_lock(&niData.session.tLock);
+                            niData.session.resp = GNSS_NI_RESPONSE_IGNORE;
+                            niData.session.respRecvd = true;
+                            pthread_cond_signal(&niData.session.tCond);
+                            pthread_mutex_unlock(&niData.session.tLock);
+                    }
+                } else if (mSessionId == niData.session.reqID &&
+                    NULL != niData.session.rawRequest) {
+                    pSession = &niData.session;
+                }
+
+                if (pSession) {
+                    LOC_LOGI("%s]: gnssNiResponseCommand: send user mResponse %u for id %u",
+                             __func__, mResponse, mSessionId);
+                    pthread_mutex_lock(&pSession->tLock);
+                    pSession->resp = mResponse;
+                    pSession->respRecvd = true;
+                    pthread_cond_signal(&pSession->tCond);
+                    pthread_mutex_unlock(&pSession->tLock);
+                } else {
+                    err = LOCATION_ERROR_ID_UNKNOWN;
+                    LOC_LOGE("%s]: gnssNiResponseCommand: id %u not an active session",
+                             __func__, mSessionId);
+                }
+            }
+            mAdapter.reportResponse(mClient, err, mSessionId);
+        }
+    };
+
+    sendMsg(new MsgGnssNiResponse(*this, client, id, response));
+
+}
+
+void
+GnssAdapter::gnssNiResponseCommand(GnssNiResponse response, void* rawRequest)
+{
+    LOC_LOGD("%s]: response %u", __func__, response);
+
+    struct MsgGnssNiResponse : public LocMsg {
+        LocApiBase& mApi;
+        const GnssNiResponse mResponse;
+        const void* mPayload;
+        inline MsgGnssNiResponse(LocApiBase& api,
+                                 const GnssNiResponse response,
+                                 const void* rawRequest) :
+            LocMsg(),
+            mApi(api),
+            mResponse(response),
+            mPayload(rawRequest) {}
+        inline virtual ~MsgGnssNiResponse() {
+            // this is a bit weird since mPayload is not
+            // allocated by this class.  But there is no better way.
+            // mPayload actually won't be NULL here.
+            free((void*)mPayload);
+        }
+        inline virtual void proc() const {
+            mApi.informNiResponse(mResponse, mPayload);
+        }
+    };
+
+    sendMsg(new MsgGnssNiResponse(*mLocApi, response, rawRequest));
+
+}
+
+uint32_t
+GnssAdapter::enableCommand(LocationTechnologyType techType)
+{
+    uint32_t sessionId = generateSessionId();
+    LOC_LOGD("%s]: id %u techType %u", __func__, sessionId, techType);
+
+    struct MsgEnableGnss : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        ContextBase& mContext;
+        uint32_t mSessionId;
+        LocationTechnologyType mTechType;
+        inline MsgEnableGnss(GnssAdapter& adapter,
+                             LocApiBase& api,
+                             ContextBase& context,
+                             uint32_t sessionId,
+                             LocationTechnologyType techType) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mContext(context),
+            mSessionId(sessionId),
+            mTechType(techType) {}
+        inline virtual void proc() const {
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            uint32_t powerVoteId = mAdapter.getPowerVoteId();
+            if (mTechType != LOCATION_TECHNOLOGY_TYPE_GNSS) {
+                err = LOCATION_ERROR_INVALID_PARAMETER;
+            } else if (powerVoteId > 0) {
+                err = LOCATION_ERROR_ALREADY_STARTED;
+            } else {
+                mContext.modemPowerVote(true);
+                mAdapter.setPowerVoteId(mSessionId);
+                mApi.setGpsLock(GNSS_CONFIG_GPS_LOCK_NONE);
+            }
+            mAdapter.reportResponse(err, mSessionId);
+        }
+    };
+
+    if (mContext != NULL) {
+        sendMsg(new MsgEnableGnss(*this, *mLocApi, *mContext, sessionId, techType));
+    } else {
+        LOC_LOGE("%s]: Context is NULL", __func__);
+    }
+
+    return sessionId;
+}
+
+void
+GnssAdapter::disableCommand(uint32_t id)
+{
+    LOC_LOGD("%s]: id %u", __func__, id);
+
+    struct MsgDisableGnss : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        ContextBase& mContext;
+        uint32_t mSessionId;
+        inline MsgDisableGnss(GnssAdapter& adapter,
+                             LocApiBase& api,
+                             ContextBase& context,
+                             uint32_t sessionId) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mContext(context),
+            mSessionId(sessionId) {}
+        inline virtual void proc() const {
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            uint32_t powerVoteId = mAdapter.getPowerVoteId();
+            if (powerVoteId != mSessionId) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            } else {
+                mContext.modemPowerVote(false);
+                mAdapter.setPowerVoteId(0);
+                mApi.setGpsLock(mAdapter.convertGpsLock(ContextBase::mGps_conf.GPS_LOCK));
+            }
+            mAdapter.reportResponse(err, mSessionId);
+        }
+    };
+
+    if (mContext != NULL) {
+        sendMsg(new MsgDisableGnss(*this, *mLocApi, *mContext, id));
+    }
+
+}
+
+void
+GnssAdapter::reportPositionEvent(const UlpLocation& ulpLocation,
+                                 const GpsLocationExtended& locationExtended,
+                                 enum loc_sess_status status,
+                                 LocPosTechMask techMask,
+                                 bool fromUlp)
+{
+    LOC_LOGD("%s]: fromUlp %u status %u", __func__, fromUlp, status);
+
+    // if this event is not called from ULP, then try to call into ULP and return if successfull
+    if (!fromUlp) {
+        if (mUlpProxy->reportPosition(ulpLocation, locationExtended,
+                                 status, techMask)) {
+            return;
+        }
+    }
+
+    struct MsgReportPosition : public LocMsg {
+        GnssAdapter& mAdapter;
+        const UlpLocation mUlpLocation;
+        const GpsLocationExtended mLocationExtended;
+        loc_sess_status mStatus;
+        LocPosTechMask mTechMask;
+        inline MsgReportPosition(GnssAdapter& adapter,
+                                 const UlpLocation& ulpLocation,
+                                 const GpsLocationExtended& locationExtended,
+                                 loc_sess_status status,
+                                 LocPosTechMask techMask) :
+            LocMsg(),
+            mAdapter(adapter),
+            mUlpLocation(ulpLocation),
+            mLocationExtended(locationExtended),
+            mStatus(status),
+            mTechMask(techMask) {}
+        inline virtual void proc() const {
+            // extract bug report info - this returns true if consumed by systemstatus
+            SystemStatus* s = LocDualContext::getSystemStatus();
+            if (nullptr != s) {
+                s->eventPosition(mUlpLocation, mLocationExtended);
+            }
+            mAdapter.reportPosition(mUlpLocation, mLocationExtended, mStatus, mTechMask);
+        }
+    };
+
+    sendMsg(new MsgReportPosition(*this, ulpLocation, locationExtended, status, techMask));
+}
+
+void
+GnssAdapter::reportPosition(const UlpLocation& ulpLocation,
+                            const GpsLocationExtended& locationExtended,
+                            enum loc_sess_status status,
+                            LocPosTechMask techMask)
+{
+    bool reported = false;
+    if (LOC_SESS_FAILURE == status) {
+        Location invalidLocation = {};
+        invalidLocation.size = sizeof(Location);
+        for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+            if (nullptr != it->second.trackingCb) {
+                it->second.trackingCb(invalidLocation);
+            }
+        }
+        reported = true;
+    }
+    // what's in the else if is... (line by line)
+    // 1. this is a final fix; and
+    //   1.1 it is a Satellite fix; or
+    //   1.2 it is a sensor fix
+    // 2. (must be intermediate fix... implicit)
+    //   2.1 we accepte intermediate; and
+    //   2.2 it is NOT the case that
+    //   2.2.1 there is inaccuracy; and
+    //   2.2.2 we care about inaccuracy; and
+    //   2.2.3 the inaccuracy exceeds our tolerance
+    else if ((LOC_SESS_SUCCESS == status &&
+              ((LOC_POS_TECH_MASK_SATELLITE |
+                LOC_POS_TECH_MASK_SENSORS   |
+                LOC_POS_TECH_MASK_HYBRID) &
+               techMask)) ||
+             (LOC_SESS_INTERMEDIATE == ContextBase::mGps_conf.INTERMEDIATE_POS &&
+              !((ulpLocation.gpsLocation.flags &
+                 LOC_GPS_LOCATION_HAS_ACCURACY) &&
+                (ContextBase::mGps_conf.ACCURACY_THRES != 0) &&
+                (ulpLocation.gpsLocation.accuracy >
+                 ContextBase::mGps_conf.ACCURACY_THRES)))) {
+        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA) {
+            mGnssSvIdUsedInPosAvail = true;
+            mGnssSvIdUsedInPosition = locationExtended.gnss_sv_used_ids;
+        }
+        for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+            if (nullptr != it->second.trackingCb) {
+                Location location = {};
+                convertLocation(location, ulpLocation.gpsLocation, locationExtended, techMask);
+                it->second.trackingCb(location);
+            }
+            if (nullptr != it->second.gnssLocationInfoCb) {
+                GnssLocationInfoNotification locationInfo = {};
+                convertLocationInfo(locationInfo, locationExtended);
+                it->second.gnssLocationInfoCb(locationInfo);
+            }
+        }
+        reported = true;
+    }
+
+    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER && !mTrackingSessions.empty()) {
+        uint8_t generate_nmea = (reported && status != LOC_SESS_FAILURE);
+        std::vector<std::string> nmeaArraystr;
+        loc_nmea_generate_pos(ulpLocation, locationExtended, generate_nmea, nmeaArraystr);
+        for (auto sentence : nmeaArraystr) {
+            reportNmea(sentence.c_str(), sentence.length());
+        }
+    }
+
+    // Free the allocated memory for rawData
+    UlpLocation* gp = (UlpLocation*)&(ulpLocation);
+    if (gp != NULL && gp->rawData != NULL)
+    {
+        delete (char*)gp->rawData;
+        gp->rawData = NULL;
+        gp->rawDataSize = 0;
+    }
+}
+
+void
+GnssAdapter::reportSvEvent(const GnssSvNotification& svNotify,
+                           bool fromUlp)
+{
+    LOC_LOGD("%s]: fromUlp %u", __func__, fromUlp);
+
+    // if this event is not called from ULP, then try to call into ULP and return if successfull
+    if (!fromUlp) {
+        if (mUlpProxy->reportSv(svNotify)) {
+            return;
+        }
+    }
+
+    struct MsgReportSv : public LocMsg {
+        GnssAdapter& mAdapter;
+        const GnssSvNotification mSvNotify;
+        inline MsgReportSv(GnssAdapter& adapter,
+                           const GnssSvNotification& svNotify) :
+            LocMsg(),
+            mAdapter(adapter),
+            mSvNotify(svNotify) {}
+        inline virtual void proc() const {
+            mAdapter.reportSv((GnssSvNotification&)mSvNotify);
+        }
+    };
+
+    sendMsg(new MsgReportSv(*this, svNotify));
+}
+
+void
+GnssAdapter::reportSv(GnssSvNotification& svNotify)
+{
+    if (mGnssSvIdUsedInPosAvail) {
+        int numSv = svNotify.count;
+        int16_t gnssSvId = 0;
+        uint64_t svUsedIdMask = 0;
+        for (int i=0; i < numSv; i++) {
+            gnssSvId = svNotify.gnssSvs[i].svId;
+            switch (svNotify.gnssSvs[i].type) {
+                case GNSS_SV_TYPE_GPS:
+                    svUsedIdMask = mGnssSvIdUsedInPosition.gps_sv_used_ids_mask;
+                    break;
+                case GNSS_SV_TYPE_GLONASS:
+                    svUsedIdMask = mGnssSvIdUsedInPosition.glo_sv_used_ids_mask;
+                    break;
+                case GNSS_SV_TYPE_BEIDOU:
+                    svUsedIdMask = mGnssSvIdUsedInPosition.bds_sv_used_ids_mask;
+                    break;
+                case GNSS_SV_TYPE_GALILEO:
+                    svUsedIdMask = mGnssSvIdUsedInPosition.gal_sv_used_ids_mask;
+                    break;
+                default:
+                    svUsedIdMask = 0;
+                    break;
+            }
+
+            // If SV ID was used in previous position fix, then set USED_IN_FIX
+            // flag, else clear the USED_IN_FIX flag.
+            if (svUsedIdMask & (1 << (gnssSvId - 1))) {
+                svNotify.gnssSvs[i].gnssSvOptionsMask |= GNSS_SV_OPTIONS_USED_IN_FIX_BIT;
+            } else {
+                svNotify.gnssSvs[i].gnssSvOptionsMask &= ~GNSS_SV_OPTIONS_USED_IN_FIX_BIT;
+            }
+        }
+    }
+
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.gnssSvCb) {
+            it->second.gnssSvCb(svNotify);
+        }
+    }
+
+    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER && !mTrackingSessions.empty()) {
+        std::vector<std::string> nmeaArraystr;
+        loc_nmea_generate_sv(svNotify, nmeaArraystr);
+        for (auto sentence : nmeaArraystr) {
+            reportNmea(sentence.c_str(), sentence.length());
+        }
+    }
+
+    mGnssSvIdUsedInPosAvail = false;
+}
+
+void
+GnssAdapter::reportNmeaEvent(const char* nmea, size_t length, bool fromUlp)
+{
+    // if this event is not called from ULP, then try to call into ULP and return if successfull
+    if (!fromUlp && !loc_nmea_is_debug(nmea, length)) {
+        if (mUlpProxy->reportNmea(nmea, length)) {
+            return;
+        }
+    }
+
+    struct MsgReportNmea : public LocMsg {
+        GnssAdapter& mAdapter;
+        const char* mNmea;
+        size_t mLength;
+        inline MsgReportNmea(GnssAdapter& adapter,
+                             const char* nmea,
+                             size_t length) :
+            LocMsg(),
+            mAdapter(adapter),
+            mNmea(new char[length+1]),
+            mLength(length) {
+                strlcpy((char*)mNmea, nmea, length+1);
+            }
+        inline virtual ~MsgReportNmea()
+        {
+            delete[] mNmea;
+        }
+        inline virtual void proc() const {
+            // extract bug report info - this returns true if consumed by systemstatus
+            bool ret = false;
+            SystemStatus* s = LocDualContext::getSystemStatus();
+            if (nullptr != s) {
+                ret = s->setNmeaString(mNmea, mLength);
+            }
+            if (false == ret) {
+                // forward NMEA message to upper layer
+                mAdapter.reportNmea(mNmea, mLength);
+            }
+        }
+    };
+
+    sendMsg(new MsgReportNmea(*this, nmea, length));
+}
+
+void
+GnssAdapter::reportNmea(const char* nmea, size_t length)
+{
+    GnssNmeaNotification nmeaNotification = {};
+    nmeaNotification.size = sizeof(GnssNmeaNotification);
+
+    struct timeval tv;
+    gettimeofday(&tv, (struct timezone *) NULL);
+    int64_t now = tv.tv_sec * 1000LL + tv.tv_usec / 1000;
+    nmeaNotification.timestamp = now;
+    nmeaNotification.nmea = nmea;
+    nmeaNotification.length = length;
+
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.gnssNmeaCb) {
+            it->second.gnssNmeaCb(nmeaNotification);
+        }
+    }
+}
+
+bool
+GnssAdapter::requestNiNotifyEvent(const GnssNiNotification &notify, const void* data)
+{
+    LOC_LOGI("%s]: notif_type: %d, timeout: %d, default_resp: %d"
+             "requestor_id: %s (encoding: %d) text: %s text (encoding: %d) extras: %s",
+             __func__, notify.type, notify.timeout, notify.timeoutResponse,
+             notify.requestor, notify.requestorEncoding,
+             notify.message, notify.messageEncoding, notify.extras);
+
+    struct MsgReportNiNotify : public LocMsg {
+        GnssAdapter& mAdapter;
+        const GnssNiNotification mNotify;
+        const void* mData;
+        inline MsgReportNiNotify(GnssAdapter& adapter,
+                                 const GnssNiNotification& notify,
+                                 const void* data) :
+            LocMsg(),
+            mAdapter(adapter),
+            mNotify(notify),
+            mData(data) {}
+        inline virtual void proc() const {
+            mAdapter.requestNiNotify(mNotify, mData);
+        }
+    };
+
+    sendMsg(new MsgReportNiNotify(*this, notify, data));
+
+    return true;
+}
+
+static void* niThreadProc(void *args)
+{
+    NiSession* pSession = (NiSession*)args;
+    int rc = 0;          /* return code from pthread calls */
+
+    struct timeval present_time;
+    struct timespec expire_time;
+
+    pthread_mutex_lock(&pSession->tLock);
+    /* Calculate absolute expire time */
+    gettimeofday(&present_time, NULL);
+    expire_time.tv_sec  = present_time.tv_sec + pSession->respTimeLeft;
+    expire_time.tv_nsec = present_time.tv_usec * 1000;
+    LOC_LOGD("%s]: time out set for abs time %ld with delay %d sec",
+             __func__, (long)expire_time.tv_sec, pSession->respTimeLeft);
+
+    while (!pSession->respRecvd) {
+        rc = pthread_cond_timedwait(&pSession->tCond,
+                                    &pSession->tLock,
+                                    &expire_time);
+        if (rc == ETIMEDOUT) {
+            pSession->resp = GNSS_NI_RESPONSE_NO_RESPONSE;
+            LOC_LOGD("%s]: time out after valting for specified time. Ret Val %d",
+                     __func__, rc);
+            break;
+        }
+    }
+    LOC_LOGD("%s]: Java layer has sent us a user response and return value from "
+             "pthread_cond_timedwait = %d pSession->resp is %u", __func__, rc, pSession->resp);
+    pSession->respRecvd = false; /* Reset the user response flag for the next session*/
+
+    // adding this check to support modem restart, in which case, we need the thread
+    // to exit without calling sending data. We made sure that rawRequest is NULL in
+    // loc_eng_ni_reset_on_engine_restart()
+    GnssAdapter* adapter = pSession->adapter;
+    GnssNiResponse resp;
+    void* rawRequest = NULL;
+    bool sendResponse = false;
+
+    if (NULL != pSession->rawRequest) {
+        if (pSession->resp != GNSS_NI_RESPONSE_IGNORE) {
+            resp = pSession->resp;
+            rawRequest = pSession->rawRequest;
+            sendResponse = true;
+        } else {
+            free(pSession->rawRequest);
+        }
+        pSession->rawRequest = NULL;
+    }
+    pthread_mutex_unlock(&pSession->tLock);
+
+    pSession->respTimeLeft = 0;
+    pSession->reqID = 0;
+
+    if (sendResponse) {
+        adapter->gnssNiResponseCommand(resp, rawRequest);
+    }
+
+    return NULL;
+}
+
+bool
+GnssAdapter::requestNiNotify(const GnssNiNotification& notify, const void* data)
+{
+    NiSession* pSession = NULL;
+    gnssNiCallback gnssNiCb = nullptr;
+
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.gnssNiCb) {
+            gnssNiCb = it->second.gnssNiCb;
+            break;
+        }
+    }
+    if (nullptr == gnssNiCb) {
+        EXIT_LOG(%s, "no clients with gnssNiCb.");
+        return false;
+    }
+
+    if (notify.type == GNSS_NI_TYPE_EMERGENCY_SUPL) {
+        if (NULL != mNiData.sessionEs.rawRequest) {
+            LOC_LOGI("%s]: supl es NI in progress, new supl es NI ignored, type: %d",
+                     __func__, notify.type);
+            if (NULL != data) {
+                free((void*)data);
+            }
+        } else {
+            pSession = &mNiData.sessionEs;
+        }
+    } else {
+        if (NULL != mNiData.session.rawRequest ||
+            NULL != mNiData.sessionEs.rawRequest) {
+            LOC_LOGI("%s]: supl NI in progress, new supl NI ignored, type: %d",
+                     __func__, notify.type);
+            if (NULL != data) {
+                free((void*)data);
+            }
+        } else {
+            pSession = &mNiData.session;
+        }
+    }
+
+    if (pSession) {
+        /* Save request */
+        pSession->rawRequest = (void*)data;
+        pSession->reqID = ++mNiData.reqIDCounter;
+        pSession->adapter = this;
+
+        int sessionId = pSession->reqID;
+
+        /* For robustness, spawn a thread at this point to timeout to clear up the notification
+         * status, even though the OEM layer in java does not do so.
+         **/
+        pSession->respTimeLeft =
+             5 + (notify.timeout != 0 ? notify.timeout : LOC_NI_NO_RESPONSE_TIME);
+
+        int rc = 0;
+        rc = pthread_create(&pSession->thread, NULL, niThreadProc, pSession);
+        if (rc) {
+            LOC_LOGE("%s]: Loc NI thread is not created.", __func__);
+        }
+        rc = pthread_detach(pSession->thread);
+        if (rc) {
+            LOC_LOGE("%s]: Loc NI thread is not detached.", __func__);
+        }
+
+        if (nullptr != gnssNiCb) {
+            gnssNiCb(sessionId, notify);
+        }
+    }
+
+    return true;
+}
+
+void
+GnssAdapter::reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurementsNotify)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgReportGnssMeasurementData : public LocMsg {
+        GnssAdapter& mAdapter;
+        const GnssMeasurementsNotification mMeasurementsNotify;
+        inline MsgReportGnssMeasurementData(GnssAdapter& adapter,
+                                           const GnssMeasurementsNotification& measurementsNotify) :
+            LocMsg(),
+            mAdapter(adapter),
+            mMeasurementsNotify(measurementsNotify) {}
+        inline virtual void proc() const {
+            mAdapter.reportGnssMeasurementData(mMeasurementsNotify);
+        }
+    };
+
+    sendMsg(new MsgReportGnssMeasurementData(*this, measurementsNotify));
+}
+
+void
+GnssAdapter::reportGnssMeasurementData(const GnssMeasurementsNotification& measurementsNotify)
+{
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.gnssMeasurementsCb) {
+            it->second.gnssMeasurementsCb(measurementsNotify);
+        }
+    }
+}
+
+void
+GnssAdapter::reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    // We send SvMeasurementSet to AmtProxy/ULPProxy to be forwarded as necessary.
+    mUlpProxy->reportSvMeasurement(svMeasurementSet);
+}
+
+void
+GnssAdapter::reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    // We send SvMeasurementSet to AmtProxy/ULPProxy to be forwarded as necessary.
+    mUlpProxy->reportSvPolynomial(svPolynomial);
+}
+
+/* INIT LOC AGPS MANAGER */
+void GnssAdapter::initAgpsCommand(void* statusV4Cb){
+
+    LOC_LOGI("GnssAdapter::initAgpsCommand");
+
+    /* Set ATL open/close callbacks */
+    AgpsAtlOpenStatusCb atlOpenStatusCb =
+            [this](int handle, int isSuccess, char* apn,
+                    AGpsBearerType bearerType, AGpsExtType agpsType) {
+
+                mLocApi->atlOpenStatus(
+                        handle, isSuccess, apn, bearerType, agpsType);
+            };
+    AgpsAtlCloseStatusCb atlCloseStatusCb =
+            [this](int handle, int isSuccess) {
+
+                mLocApi->atlCloseStatus(handle, isSuccess);
+            };
+
+    /* Register DS Client APIs */
+    AgpsDSClientInitFn dsClientInitFn =
+            [this](bool isDueToSSR) {
+
+                return mLocApi->initDataServiceClient(isDueToSSR);
+            };
+
+    AgpsDSClientOpenAndStartDataCallFn dsClientOpenAndStartDataCallFn =
+            [this] {
+
+                return mLocApi->openAndStartDataCall();
+            };
+
+    AgpsDSClientStopDataCallFn dsClientStopDataCallFn =
+            [this] {
+
+                mLocApi->stopDataCall();
+            };
+
+    AgpsDSClientCloseDataCallFn dsClientCloseDataCallFn =
+            [this] {
+
+                mLocApi->closeDataCall();
+            };
+
+    AgpsDSClientReleaseFn dsClientReleaseFn =
+            [this] {
+
+                mLocApi->releaseDataServiceClient();
+            };
+
+    /* Send Msg function */
+    SendMsgToAdapterMsgQueueFn sendMsgFn =
+            [this](LocMsg* msg) {
+
+                sendMsg(msg);
+            };
+
+    /* Message to initialize AGPS module */
+    struct AgpsMsgInit: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+
+        AgpsFrameworkInterface::AgnssStatusIpV4Cb mFrameworkStatusV4Cb;
+
+        AgpsAtlOpenStatusCb mAtlOpenStatusCb;
+        AgpsAtlCloseStatusCb mAtlCloseStatusCb;
+
+        AgpsDSClientInitFn mDSClientInitFn;
+        AgpsDSClientOpenAndStartDataCallFn mDSClientOpenAndStartDataCallFn;
+        AgpsDSClientStopDataCallFn mDSClientStopDataCallFn;
+        AgpsDSClientCloseDataCallFn mDSClientCloseDataCallFn;
+        AgpsDSClientReleaseFn mDSClientReleaseFn;
+
+        SendMsgToAdapterMsgQueueFn mSendMsgFn;
+        GnssAdapter& mAdapter;
+
+        inline AgpsMsgInit(AgpsManager* agpsManager,
+                AgpsFrameworkInterface::AgnssStatusIpV4Cb frameworkStatusV4Cb,
+                AgpsAtlOpenStatusCb atlOpenStatusCb,
+                AgpsAtlCloseStatusCb atlCloseStatusCb,
+                AgpsDSClientInitFn dsClientInitFn,
+                AgpsDSClientOpenAndStartDataCallFn dsClientOpenAndStartDataCallFn,
+                AgpsDSClientStopDataCallFn dsClientStopDataCallFn,
+                AgpsDSClientCloseDataCallFn dsClientCloseDataCallFn,
+                AgpsDSClientReleaseFn dsClientReleaseFn,
+                SendMsgToAdapterMsgQueueFn sendMsgFn,
+                GnssAdapter& adapter) :
+                LocMsg(), mAgpsManager(agpsManager), mFrameworkStatusV4Cb(
+                        frameworkStatusV4Cb), mAtlOpenStatusCb(atlOpenStatusCb), mAtlCloseStatusCb(
+                        atlCloseStatusCb), mDSClientInitFn(dsClientInitFn), mDSClientOpenAndStartDataCallFn(
+                        dsClientOpenAndStartDataCallFn), mDSClientStopDataCallFn(
+                        dsClientStopDataCallFn), mDSClientCloseDataCallFn(
+                        dsClientCloseDataCallFn), mDSClientReleaseFn(
+                        dsClientReleaseFn), mSendMsgFn(sendMsgFn),
+                        mAdapter(adapter) {
+
+            LOC_LOGV("AgpsMsgInit");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgInit::proc()");
+
+            mAgpsManager->registerCallbacks(mFrameworkStatusV4Cb, mAtlOpenStatusCb,
+                    mAtlCloseStatusCb, mDSClientInitFn,
+                    mDSClientOpenAndStartDataCallFn, mDSClientStopDataCallFn,
+                    mDSClientCloseDataCallFn, mDSClientReleaseFn, mSendMsgFn);
+
+            mAgpsManager->createAgpsStateMachines();
+
+            /* Register for AGPS event mask */
+            mAdapter.updateEvtMask(LOC_API_ADAPTER_BIT_LOCATION_SERVER_REQUEST,
+                                   LOC_REGISTRATION_MASK_ENABLED);
+        }
+    };
+
+    /* Send message to initialize AGPS Manager */
+    sendMsg(new AgpsMsgInit(
+                &mAgpsManager,
+                (AgpsFrameworkInterface::AgnssStatusIpV4Cb)statusV4Cb,
+                atlOpenStatusCb, atlCloseStatusCb,
+                dsClientInitFn, dsClientOpenAndStartDataCallFn,
+                dsClientStopDataCallFn, dsClientCloseDataCallFn,
+                dsClientReleaseFn,
+                sendMsgFn,
+                *this));
+}
+
+/* GnssAdapter::requestATL
+ * Method triggered in QMI thread as part of handling below message:
+ * eQMI_LOC_SERVER_REQUEST_OPEN_V02
+ * Triggers the AGPS state machine to setup AGPS call for below WWAN types:
+ * eQMI_LOC_WWAN_TYPE_INTERNET_V02
+ * eQMI_LOC_WWAN_TYPE_AGNSS_V02 */
+bool GnssAdapter::requestATL(int connHandle, LocAGpsType agpsType){
+
+    LOC_LOGI("GnssAdapter::requestATL");
+
+    sendMsg( new AgpsMsgRequestATL(
+             &mAgpsManager, connHandle, (AGpsExtType)agpsType));
+
+    return true;
+}
+
+/* GnssAdapter::requestSuplES
+ * Method triggered in QMI thread as part of handling below message:
+ * eQMI_LOC_SERVER_REQUEST_OPEN_V02
+ * Triggers the AGPS state machine to setup AGPS call for below WWAN types:
+ * eQMI_LOC_WWAN_TYPE_AGNSS_EMERGENCY_V02 */
+bool GnssAdapter::requestSuplES(int connHandle){
+
+    LOC_LOGI("GnssAdapter::requestSuplES");
+
+    sendMsg( new AgpsMsgRequestATL(
+             &mAgpsManager, connHandle, LOC_AGPS_TYPE_SUPL_ES));
+
+    return true;
+}
+
+/* GnssAdapter::releaseATL
+ * Method triggered in QMI thread as part of handling below message:
+ * eQMI_LOC_SERVER_REQUEST_CLOSE_V02
+ * Triggers teardown of an existing AGPS call */
+bool GnssAdapter::releaseATL(int connHandle){
+
+    LOC_LOGI("GnssAdapter::releaseATL");
+
+    /* Release SUPL/INTERNET/SUPL_ES ATL */
+    struct AgpsMsgReleaseATL: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+        int mConnHandle;
+
+        inline AgpsMsgReleaseATL(AgpsManager* agpsManager, int connHandle) :
+                LocMsg(), mAgpsManager(agpsManager), mConnHandle(connHandle) {
+
+            LOC_LOGV("AgpsMsgReleaseATL");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgReleaseATL::proc()");
+            mAgpsManager->releaseATL(mConnHandle);
+        }
+    };
+
+    sendMsg( new AgpsMsgReleaseATL(&mAgpsManager, connHandle));
+
+    return true;
+}
+
+/* GnssAdapter::reportDataCallOpened
+ * DS Client data call opened successfully.
+ * Send message to AGPS Manager to handle. */
+bool GnssAdapter::reportDataCallOpened(){
+
+    LOC_LOGI("GnssAdapter::reportDataCallOpened");
+
+    struct AgpsMsgSuplEsOpened: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+
+        inline AgpsMsgSuplEsOpened(AgpsManager* agpsManager) :
+                LocMsg(), mAgpsManager(agpsManager) {
+
+            LOC_LOGV("AgpsMsgSuplEsOpened");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgSuplEsOpened::proc()");
+            mAgpsManager->reportDataCallOpened();
+        }
+    };
+
+    sendMsg( new AgpsMsgSuplEsOpened(&mAgpsManager));
+
+    return true;
+}
+
+/* GnssAdapter::reportDataCallClosed
+ * DS Client data call closed.
+ * Send message to AGPS Manager to handle. */
+bool GnssAdapter::reportDataCallClosed(){
+
+    LOC_LOGI("GnssAdapter::reportDataCallClosed");
+
+    struct AgpsMsgSuplEsClosed: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+
+        inline AgpsMsgSuplEsClosed(AgpsManager* agpsManager) :
+                LocMsg(), mAgpsManager(agpsManager) {
+
+            LOC_LOGV("AgpsMsgSuplEsClosed");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgSuplEsClosed::proc()");
+            mAgpsManager->reportDataCallClosed();
+        }
+    };
+
+    sendMsg( new AgpsMsgSuplEsClosed(&mAgpsManager));
+
+    return true;
+}
+
+void GnssAdapter::dataConnOpenCommand(
+        AGpsExtType agpsType,
+        const char* apnName, int apnLen, LocApnIpType ipType){
+
+    LOC_LOGI("GnssAdapter::frameworkDataConnOpen");
+
+    struct AgpsMsgAtlOpenSuccess: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+        AGpsExtType mAgpsType;
+        char* mApnName;
+        int mApnLen;
+        LocApnIpType mIpType;
+
+        inline AgpsMsgAtlOpenSuccess(AgpsManager* agpsManager, AGpsExtType agpsType,
+                const char* apnName, int apnLen, LocApnIpType ipType) :
+                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType), mApnName(
+                        new char[apnLen + 1]), mApnLen(apnLen), mIpType(ipType) {
+
+            LOC_LOGV("AgpsMsgAtlOpenSuccess");
+            memcpy(mApnName, apnName, apnLen);
+            mApnName[apnLen] = 0;
+        }
+
+        inline ~AgpsMsgAtlOpenSuccess() {
+            delete[] mApnName;
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgAtlOpenSuccess::proc()");
+            mAgpsManager->reportAtlOpenSuccess(mAgpsType, mApnName, mApnLen,
+                    mIpType);
+        }
+    };
+
+    sendMsg( new AgpsMsgAtlOpenSuccess(
+            &mAgpsManager, (AGpsExtType)agpsType, apnName, apnLen, ipType));
+}
+
+void GnssAdapter::dataConnClosedCommand(AGpsExtType agpsType){
+
+    LOC_LOGI("GnssAdapter::frameworkDataConnClosed");
+
+    struct AgpsMsgAtlClosed: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+        AGpsExtType mAgpsType;
+
+        inline AgpsMsgAtlClosed(AgpsManager* agpsManager, AGpsExtType agpsType) :
+                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType) {
+
+            LOC_LOGV("AgpsMsgAtlClosed");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgAtlClosed::proc()");
+            mAgpsManager->reportAtlClosed(mAgpsType);
+        }
+    };
+
+    sendMsg( new AgpsMsgAtlClosed(&mAgpsManager, (AGpsExtType)agpsType));
+}
+
+void GnssAdapter::dataConnFailedCommand(AGpsExtType agpsType){
+
+    LOC_LOGI("GnssAdapter::frameworkDataConnFailed");
+
+    struct AgpsMsgAtlOpenFailed: public LocMsg {
+
+        AgpsManager* mAgpsManager;
+        AGpsExtType mAgpsType;
+
+        inline AgpsMsgAtlOpenFailed(AgpsManager* agpsManager, AGpsExtType agpsType) :
+                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType) {
+
+            LOC_LOGV("AgpsMsgAtlOpenFailed");
+        }
+
+        inline virtual void proc() const {
+
+            LOC_LOGV("AgpsMsgAtlOpenFailed::proc()");
+            mAgpsManager->reportAtlOpenFailed(mAgpsType);
+        }
+    };
+
+    sendMsg( new AgpsMsgAtlOpenFailed(&mAgpsManager, (AGpsExtType)agpsType));
+}
+
+void GnssAdapter::convertSatelliteInfo(std::vector<GnssDebugSatelliteInfo>& out,
+                                       const GnssSvType& in_constellation,
+                                       const SystemStatusReports& in)
+{
+    uint64_t sv_mask = 0ULL;
+    uint32_t svid_min = 0;
+    uint32_t svid_num = 0;
+    uint32_t svid_idx = 0;
+
+    uint64_t eph_health_good_mask = 0ULL;
+    uint64_t eph_health_bad_mask = 0ULL;
+    uint64_t server_perdiction_available_mask = 0ULL;
+    float server_perdiction_age = 0.0f;
+
+    // set constellationi based parameters
+    switch (in_constellation) {
+        case GNSS_SV_TYPE_GPS:
+            svid_min = GPS_MIN;
+            svid_num = GPS_NUM;
+            svid_idx = 0;
+            if (!in.mSvHealth.empty()) {
+                eph_health_good_mask = in.mSvHealth.back().mGpsGoodMask;
+                eph_health_bad_mask  = in.mSvHealth.back().mGpsBadMask;
+            }
+            if (!in.mXtra.empty()) {
+                server_perdiction_available_mask = in.mXtra.back().mGpsXtraValid;
+                server_perdiction_age = (float)(in.mXtra.back().mGpsXtraAge);
+            }
+            break;
+        case GNSS_SV_TYPE_GLONASS:
+            svid_min = GLO_MIN;
+            svid_num = GLO_NUM;
+            svid_idx = GPS_NUM;
+            if (!in.mSvHealth.empty()) {
+                eph_health_good_mask = in.mSvHealth.back().mGloGoodMask;
+                eph_health_bad_mask  = in.mSvHealth.back().mGloBadMask;
+            }
+            if (!in.mXtra.empty()) {
+                server_perdiction_available_mask = in.mXtra.back().mGloXtraValid;
+                server_perdiction_age = (float)(in.mXtra.back().mGloXtraAge);
+            }
+            break;
+        case GNSS_SV_TYPE_QZSS:
+            svid_min = QZSS_MIN;
+            svid_num = QZSS_NUM;
+            svid_idx = GPS_NUM+GLO_NUM;
+            if (!in.mSvHealth.empty()) {
+                eph_health_good_mask = in.mSvHealth.back().mQzssGoodMask;
+                eph_health_bad_mask  = in.mSvHealth.back().mQzssBadMask;
+            }
+            if (!in.mXtra.empty()) {
+                server_perdiction_available_mask = in.mXtra.back().mQzssXtraValid;
+                server_perdiction_age = (float)(in.mXtra.back().mQzssXtraAge);
+            }
+            break;
+        case GNSS_SV_TYPE_BEIDOU:
+            svid_min = BDS_MIN;
+            svid_num = BDS_NUM;
+            svid_idx = GPS_NUM+GLO_NUM+QZSS_NUM;
+            if (!in.mSvHealth.empty()) {
+                eph_health_good_mask = in.mSvHealth.back().mBdsGoodMask;
+                eph_health_bad_mask  = in.mSvHealth.back().mBdsBadMask;
+            }
+            if (!in.mXtra.empty()) {
+                server_perdiction_available_mask = in.mXtra.back().mBdsXtraValid;
+                server_perdiction_age = (float)(in.mXtra.back().mBdsXtraAge);
+            }
+            break;
+        case GNSS_SV_TYPE_GALILEO:
+            svid_min = GAL_MIN;
+            svid_num = GAL_NUM;
+            svid_idx = GPS_NUM+GLO_NUM+QZSS_NUM+BDS_NUM;
+            if (!in.mSvHealth.empty()) {
+                eph_health_good_mask = in.mSvHealth.back().mGalGoodMask;
+                eph_health_bad_mask  = in.mSvHealth.back().mGalBadMask;
+            }
+            if (!in.mXtra.empty()) {
+                server_perdiction_available_mask = in.mXtra.back().mGalXtraValid;
+                server_perdiction_age = (float)(in.mXtra.back().mGalXtraAge);
+            }
+            break;
+        default:
+            return;
+    }
+
+    // extract each sv info from systemstatus report
+    for(uint32_t i=0; i<svid_num; i++) {
+
+        GnssDebugSatelliteInfo s = {};
+        s.size = sizeof(s);
+        s.svid = i + svid_min;
+        s.constellation = in_constellation;
+
+        if (!in.mNavData.empty()) {
+            s.mEphemerisType   = in.mNavData.back().mNav[svid_idx+i].mType;
+            s.mEphemerisSource = in.mNavData.back().mNav[svid_idx+i].mSource;
+        }
+        else {
+            s.mEphemerisType   = GNSS_EPH_TYPE_UNKNOWN;
+            s.mEphemerisSource = GNSS_EPH_SOURCE_UNKNOWN;
+        }
+
+        sv_mask = 0x1ULL << i;
+        if (eph_health_good_mask & sv_mask) {
+            s.mEphemerisHealth = GNSS_EPH_HEALTH_GOOD;
+        }
+        else if (eph_health_bad_mask & sv_mask) {
+            s.mEphemerisHealth = GNSS_EPH_HEALTH_BAD;
+        }
+        else {
+            s.mEphemerisHealth = GNSS_EPH_HEALTH_UNKNOWN;
+        }
+
+        if (!in.mNavData.empty()) {
+            s.ephemerisAgeSeconds =
+                (float)(in.mNavData.back().mNav[svid_idx+i].mAgeSec);
+        }
+        else {
+            s.ephemerisAgeSeconds = 0.0f;
+        }
+
+        if (server_perdiction_available_mask & sv_mask) {
+            s.serverPredictionIsAvailable = true;
+        }
+        else {
+            s.serverPredictionIsAvailable = false;
+        }
+
+        s.serverPredictionAgeSeconds = server_perdiction_age;
+        out.push_back(s);
+    }
+
+    return;
+}
+
+bool GnssAdapter::getDebugReport(GnssDebugReport& r)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    SystemStatus* systemstatus = LocDualContext::getSystemStatus();
+    if (nullptr == systemstatus) {
+        return false;
+    }
+
+    SystemStatusReports reports = {};
+    systemstatus->getReport(reports, true);
+
+    r.size = sizeof(r);
+
+    // location block
+    r.mLocation.size = sizeof(r.mLocation);
+    if(!reports.mLocation.empty()) {
+        r.mLocation.mValid = true;
+        r.mLocation.mLocation.latitude =
+            reports.mLocation.back().mLocation.gpsLocation.latitude;
+        r.mLocation.mLocation.longitude =
+            reports.mLocation.back().mLocation.gpsLocation.longitude;
+        r.mLocation.mLocation.altitude =
+            reports.mLocation.back().mLocation.gpsLocation.altitude;
+        r.mLocation.mLocation.speed =
+            (double)(reports.mLocation.back().mLocation.gpsLocation.speed);
+        r.mLocation.mLocation.bearing =
+            (double)(reports.mLocation.back().mLocation.gpsLocation.bearing);
+        r.mLocation.mLocation.accuracy =
+            (double)(reports.mLocation.back().mLocation.gpsLocation.accuracy);
+
+        r.mLocation.verticalAccuracyMeters =
+            reports.mLocation.back().mLocationEx.vert_unc;
+        r.mLocation.speedAccuracyMetersPerSecond =
+            reports.mLocation.back().mLocationEx.speed_unc;
+        r.mLocation.bearingAccuracyDegrees =
+            reports.mLocation.back().mLocationEx.bearing_unc;
+
+        r.mLocation.mLocation.timestamp =
+            reports.mLocation.back().mLocation.gpsLocation.timestamp;
+    }
+    else if(!reports.mBestPosition.empty()) {
+        r.mLocation.mValid = true;
+        r.mLocation.mLocation.latitude  =
+            (double)(reports.mBestPosition.back().mBestLat);
+        r.mLocation.mLocation.longitude =
+            (double)(reports.mBestPosition.back().mBestLon);
+        r.mLocation.mLocation.altitude  =
+            reports.mBestPosition.back().mBestAlt;
+
+        r.mLocation.mLocation.timestamp =
+            reports.mBestPosition.back().mUtcReported.tv_sec * 1000ULL +
+            reports.mBestPosition.back().mUtcReported.tv_nsec / 1000000ULL;
+    }
+    else {
+        r.mLocation.mValid = false;
+    }
+
+    if (r.mLocation.mValid) {
+        LOC_LOGV("getDebugReport - lat=%f lon=%f alt=%f speed=%f",
+            r.mLocation.mLocation.latitude,
+            r.mLocation.mLocation.longitude,
+            r.mLocation.mLocation.altitude,
+            r.mLocation.mLocation.speed);
+    }
+
+    // time block
+    r.mTime.size = sizeof(r.mTime);
+    if(!reports.mTimeAndClock.empty()) {
+        r.mTime.mValid = true;
+        r.mTime.timeEstimate =
+            (((int64_t)(reports.mTimeAndClock.back().mGpsWeek)*7 +
+                        GNSS_UTC_TIME_OFFSET)*24*60*60 +
+              (int64_t)(reports.mTimeAndClock.back().mLeapSeconds))*1000ULL +
+              (int64_t)(reports.mTimeAndClock.back().mGpsTowMs);
+
+        r.mTime.timeUncertaintyNs =
+            (float)((reports.mTimeAndClock.back().mTimeUnc +
+                     reports.mTimeAndClock.back().mLeapSecUnc)*1000);
+        r.mTime.frequencyUncertaintyNsPerSec =
+            (float)(reports.mTimeAndClock.back().mClockFreqBiasUnc);
+        LOC_LOGV("getDebugReport - timeestimate=%ld", r.mTime.timeEstimate);
+    }
+    else {
+        r.mTime.mValid = false;
+    }
+
+    // satellite info block
+    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GPS, reports);
+    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GLONASS, reports);
+    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_QZSS, reports);
+    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_BEIDOU, reports);
+    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GALILEO, reports);
+    LOC_LOGV("getDebugReport - satellite=%lu", r.mSatelliteInfo.size());
+
+    return true;
+}
+
diff --git a/sdm845/gnss/GnssAdapter.h b/sdm845/gnss/GnssAdapter.h
new file mode 100644
index 0000000..429bcb3
--- /dev/null
+++ b/sdm845/gnss/GnssAdapter.h
@@ -0,0 +1,261 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef GNSS_ADAPTER_H
+#define GNSS_ADAPTER_H
+
+#include <LocAdapterBase.h>
+#include <LocDualContext.h>
+#include <UlpProxyBase.h>
+#include <LocationAPI.h>
+#include <Agps.h>
+#include <SystemStatus.h>
+
+#define MAX_URL_LEN 256
+#define NMEA_SENTENCE_MAX_LENGTH 200
+#define GLONASS_SV_ID_OFFSET 64
+#define MAX_SATELLITES_IN_USE 12
+#define LOC_NI_NO_RESPONSE_TIME 20
+#define LOC_GPS_NI_RESPONSE_IGNORE 4
+
+class GnssAdapter;
+
+typedef struct {
+    pthread_t               thread;        /* NI thread */
+    uint32_t                respTimeLeft;  /* examine time for NI response */
+    bool                    respRecvd;     /* NI User reponse received or not from Java layer*/
+    void*                   rawRequest;
+    uint32_t                reqID;         /* ID to check against response */
+    GnssNiResponse          resp;
+    pthread_cond_t          tCond;
+    pthread_mutex_t         tLock;
+    GnssAdapter*            adapter;
+} NiSession;
+typedef struct {
+    NiSession session;    /* SUPL NI Session */
+    NiSession sessionEs;  /* Emergency SUPL NI Session */
+    uint32_t reqIDCounter;
+} NiData;
+
+typedef enum {
+    NMEA_PROVIDER_AP = 0, // Application Processor Provider of NMEA
+    NMEA_PROVIDER_MP      // Modem Processor Provider of NMEA
+} NmeaProviderType;
+typedef struct {
+    GnssSvType svType;
+    const char* talker;
+    uint64_t mask;
+    uint32_t svIdOffset;
+} NmeaSvMeta;
+
+using namespace loc_core;
+
+class GnssAdapter : public LocAdapterBase {
+    /* ==== ULP ============================================================================ */
+    UlpProxyBase* mUlpProxy;
+
+    /* ==== CLIENT ========================================================================= */
+    typedef std::map<LocationAPI*, LocationCallbacks> ClientDataMap;
+    ClientDataMap mClientData;
+
+    /* ==== TRACKING ======================================================================= */
+    LocationSessionMap mTrackingSessions;
+    LocPosMode mUlpPositionMode;
+    GnssSvUsedInPosition mGnssSvIdUsedInPosition;
+    bool mGnssSvIdUsedInPosAvail;
+
+    /* ==== CONTROL ======================================================================== */
+    LocationControlCallbacks mControlCallbacks;
+    uint32_t mPowerVoteId;
+
+    /* ==== NI ============================================================================= */
+    NiData mNiData;
+
+    /* ==== AGPS ========================================================*/
+    // This must be initialized via initAgps()
+    AgpsManager mAgpsManager;
+
+    /*==== CONVERSION ===================================================================*/
+    static void convertOptions(LocPosMode& out, const LocationOptions& options);
+    static void convertLocation(Location& out, const LocGpsLocation& locGpsLocation,
+                                const GpsLocationExtended& locationExtended,
+                                const LocPosTechMask techMask);
+    static void convertLocationInfo(GnssLocationInfoNotification& out,
+                                    const GpsLocationExtended& locationExtended);
+
+public:
+
+    GnssAdapter();
+    virtual ~GnssAdapter();
+
+    /* ==== SSR ============================================================================ */
+    /* ======== EVENTS ====(Called from QMI Thread)========================================= */
+    virtual void handleEngineUpEvent();
+    /* ======== UTILITIES ================================================================== */
+    void restartSessions();
+
+    /* ==== ULP ============================================================================ */
+    /* ======== COMMANDS ====(Called from ULP Thread)==================================== */
+    virtual void setUlpProxyCommand(UlpProxyBase* ulp);
+    /* ======== UTILITIES ================================================================== */
+    void setUlpProxy(UlpProxyBase* ulp);
+    inline UlpProxyBase* getUlpProxy() { return mUlpProxy; }
+
+    /* ==== CLIENT ========================================================================= */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    void addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks);
+    void removeClientCommand(LocationAPI* client);
+    void requestCapabilitiesCommand(LocationAPI* client);
+    /* ======== UTILITIES ================================================================== */
+    void saveClient(LocationAPI* client, const LocationCallbacks& callbacks);
+    void eraseClient(LocationAPI* client);
+    void updateClientsEventMask();
+    void stopClientSessions(LocationAPI* client);
+    LocationCallbacks getClientCallbacks(LocationAPI* client);
+
+    /* ==== TRACKING ======================================================================= */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    uint32_t startTrackingCommand(LocationAPI* client, LocationOptions& options);
+    void updateTrackingOptionsCommand(LocationAPI* client, uint32_t id, LocationOptions& options);
+    void stopTrackingCommand(LocationAPI* client, uint32_t id);
+    /* ======================(Called from ULP Thread)======================================= */
+    virtual void setPositionModeCommand(LocPosMode& locPosMode);
+    virtual void startTrackingCommand();
+    virtual void stopTrackingCommand();
+    virtual void getZppCommand();
+    /* ======== RESPONSES ================================================================== */
+    void reportResponse(LocationAPI* client, LocationError err, uint32_t sessionId);
+    /* ======== UTILITIES ================================================================== */
+    bool hasTrackingCallback(LocationAPI* client);
+    bool hasMeasurementsCallback(LocationAPI* client);
+    bool isTrackingSession(LocationAPI* client, uint32_t sessionId);
+    void saveTrackingSession(LocationAPI* client, uint32_t sessionId,
+                             const LocationOptions& options);
+    void eraseTrackingSession(LocationAPI* client, uint32_t sessionId);
+    void setUlpPositionMode(const LocPosMode& mode) { mUlpPositionMode = mode; }
+    LocPosMode& getUlpPositionMode() { return mUlpPositionMode; }
+    LocationError startTrackingMultiplex(const LocationOptions& options);
+    LocationError startTracking(const LocationOptions& options);
+    LocationError stopTrackingMultiplex(LocationAPI* client, uint32_t id);
+    LocationError stopTracking();
+
+    /* ==== NI ============================================================================= */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    void gnssNiResponseCommand(LocationAPI* client, uint32_t id, GnssNiResponse response);
+    /* ======================(Called from NI Thread)======================================== */
+    void gnssNiResponseCommand(GnssNiResponse response, void* rawRequest);
+    /* ======== UTILITIES ================================================================== */
+    bool hasNiNotifyCallback(LocationAPI* client);
+    NiData& getNiData() { return mNiData; }
+
+    /* ==== CONTROL ======================================================================== */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    uint32_t enableCommand(LocationTechnologyType techType);
+    void disableCommand(uint32_t id);
+    void setControlCallbacksCommand(LocationControlCallbacks& controlCallbacks);
+    void readConfigCommand();
+    void setConfigCommand();
+    uint32_t* gnssUpdateConfigCommand(GnssConfig config);
+    uint32_t gnssDeleteAidingDataCommand(GnssAidingData& data);
+
+    void initAgpsCommand(void* statusV4Cb);
+    void dataConnOpenCommand(
+            AGpsExtType agpsType,
+            const char* apnName, int apnLen, LocApnIpType ipType);
+    void dataConnClosedCommand(AGpsExtType agpsType);
+    void dataConnFailedCommand(AGpsExtType agpsType);
+
+    /* ======== RESPONSES ================================================================== */
+    void reportResponse(LocationError err, uint32_t sessionId);
+    void reportResponse(size_t count, LocationError* errs, uint32_t* ids);
+    /* ======== UTILITIES ================================================================== */
+    LocationControlCallbacks& getControlCallbacks() { return mControlCallbacks; }
+    void setControlCallbacks(const LocationControlCallbacks& controlCallbacks)
+    { mControlCallbacks = controlCallbacks; }
+    void setPowerVoteId(uint32_t id) { mPowerVoteId = id; }
+    uint32_t getPowerVoteId() { return mPowerVoteId; }
+    bool resolveInAddress(const char* hostAddress, struct in_addr* inAddress);
+
+    /* ==== REPORTS ======================================================================== */
+    /* ======== EVENTS ====(Called from QMI/ULP Thread)===================================== */
+    virtual void reportPositionEvent(const UlpLocation& ulpLocation,
+                                     const GpsLocationExtended& locationExtended,
+                                     enum loc_sess_status status,
+                                     LocPosTechMask techMask,
+                                     bool fromUlp=false);
+    virtual void reportSvEvent(const GnssSvNotification& svNotify, bool fromUlp=false);
+    virtual void reportNmeaEvent(const char* nmea, size_t length, bool fromUlp=false);
+    virtual bool requestNiNotifyEvent(const GnssNiNotification& notify, const void* data);
+    virtual void reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurementsNotify);
+    virtual void reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet);
+    virtual void reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial);
+
+    virtual bool requestATL(int connHandle, LocAGpsType agps_type);
+    virtual bool releaseATL(int connHandle);
+    virtual bool requestSuplES(int connHandle);
+    virtual bool reportDataCallOpened();
+    virtual bool reportDataCallClosed();
+
+    /* ======== UTILITIES ================================================================= */
+    void reportPosition(const UlpLocation &ulpLocation,
+                        const GpsLocationExtended &locationExtended,
+                        enum loc_sess_status status,
+                        LocPosTechMask techMask);
+    void reportSv(GnssSvNotification& svNotify);
+    void reportNmea(const char* nmea, size_t length);
+    bool requestNiNotify(const GnssNiNotification& notify, const void* data);
+    void reportGnssMeasurementData(const GnssMeasurementsNotification& measurementsNotify);
+
+    /*======== GNSSDEBUG ================================================================*/
+    bool getDebugReport(GnssDebugReport& report);
+
+    /*==== CONVERSION ===================================================================*/
+    static uint32_t convertGpsLock(const GnssConfigGpsLock gpsLock);
+    static GnssConfigGpsLock convertGpsLock(const uint32_t gpsLock);
+    static uint32_t convertSuplVersion(const GnssConfigSuplVersion suplVersion);
+    static GnssConfigSuplVersion convertSuplVersion(const uint32_t suplVersion);
+    static uint32_t convertLppProfile(const GnssConfigLppProfile lppProfile);
+    static GnssConfigLppProfile convertLppProfile(const uint32_t lppProfile);
+    static uint32_t convertEP4ES(const GnssConfigEmergencyPdnForEmergencySupl);
+    static uint32_t convertSuplEs(const GnssConfigSuplEmergencyServices suplEmergencyServices);
+    static uint32_t convertLppeCp(const GnssConfigLppeControlPlaneMask lppeControlPlaneMask);
+    static GnssConfigLppeControlPlaneMask convertLppeCp(const uint32_t lppeControlPlaneMask);
+    static uint32_t convertLppeUp(const GnssConfigLppeUserPlaneMask lppeUserPlaneMask);
+    static GnssConfigLppeUserPlaneMask convertLppeUp(const uint32_t lppeUserPlaneMask);
+    static uint32_t convertAGloProt(const GnssConfigAGlonassPositionProtocolMask);
+    static uint32_t convertSuplMode(const GnssConfigSuplModeMask suplModeMask);
+    static void convertSatelliteInfo(std::vector<GnssDebugSatelliteInfo>& out,
+                                     const GnssSvType& in_constellation,
+                                     const SystemStatusReports& in);
+
+    void injectLocationCommand(double latitude, double longitude, float accuracy);
+    void injectTimeCommand(int64_t time, int64_t timeReference, int32_t uncertainty);
+
+};
+
+#endif //GNSS_ADAPTER_H
diff --git a/sdm845/gnss/location_gnss.cpp b/sdm845/gnss/location_gnss.cpp
new file mode 100644
index 0000000..0f905fd
--- /dev/null
+++ b/sdm845/gnss/location_gnss.cpp
@@ -0,0 +1,250 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "GnssAdapter.h"
+#include "location_interface.h"
+
+static GnssAdapter* gGnssAdapter = NULL;
+
+static void initialize();
+static void deinitialize();
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks);
+static void removeClient(LocationAPI* client);
+static void requestCapabilities(LocationAPI* client);
+
+static uint32_t startTracking(LocationAPI* client, LocationOptions& options);
+static void updateTrackingOptions(LocationAPI* client, uint32_t id, LocationOptions& options);
+static void stopTracking(LocationAPI* client, uint32_t id);
+
+static void gnssNiResponse(LocationAPI* client, uint32_t id, GnssNiResponse response);
+static uint32_t gnssDeleteAidingData(GnssAidingData& data);
+
+static void setControlCallbacks(LocationControlCallbacks& controlCallbacks);
+static uint32_t enable(LocationTechnologyType techType);
+static void disable(uint32_t id);
+static uint32_t* gnssUpdateConfig(GnssConfig config);
+
+static void injectLocation(double latitude, double longitude, float accuracy);
+static void injectTime(int64_t time, int64_t timeReference, int32_t uncertainty);
+
+static void agpsInit(void* statusV4Cb);
+static void agpsDataConnOpen(AGpsExtType agpsType, const char* apnName, int apnLen, int ipType);
+static void agpsDataConnClosed(AGpsExtType agpsType);
+static void agpsDataConnFailed(AGpsExtType agpsType);
+static void getDebugReport(GnssDebugReport& report);
+
+static const GnssInterface gGnssInterface = {
+    sizeof(GnssInterface),
+    initialize,
+    deinitialize,
+    addClient,
+    removeClient,
+    requestCapabilities,
+    startTracking,
+    updateTrackingOptions,
+    stopTracking,
+    gnssNiResponse,
+    setControlCallbacks,
+    enable,
+    disable,
+    gnssUpdateConfig,
+    gnssDeleteAidingData,
+    injectLocation,
+    injectTime,
+    agpsInit,
+    agpsDataConnOpen,
+    agpsDataConnClosed,
+    agpsDataConnFailed,
+    getDebugReport,
+};
+
+#ifndef DEBUG_X86
+extern "C" const GnssInterface* getGnssInterface()
+#else
+const GnssInterface* getGnssInterface()
+#endif // DEBUG_X86
+{
+   return &gGnssInterface;
+}
+
+static void initialize()
+{
+    if (NULL == gGnssAdapter) {
+        gGnssAdapter = new GnssAdapter();
+    }
+}
+
+static void deinitialize()
+{
+    if (NULL != gGnssAdapter) {
+        delete gGnssAdapter;
+        gGnssAdapter = NULL;
+    }
+}
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->addClientCommand(client, callbacks);
+    }
+}
+
+static void removeClient(LocationAPI* client)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->removeClientCommand(client);
+    }
+}
+
+static void requestCapabilities(LocationAPI* client)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->requestCapabilitiesCommand(client);
+    }
+}
+
+static uint32_t startTracking(LocationAPI* client, LocationOptions& options)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->startTrackingCommand(client, options);
+    } else {
+        return 0;
+    }
+}
+
+static void updateTrackingOptions(LocationAPI* client, uint32_t id, LocationOptions& options)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->updateTrackingOptionsCommand(client, id, options);
+    }
+}
+
+static void stopTracking(LocationAPI* client, uint32_t id)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->stopTrackingCommand(client, id);
+    }
+}
+
+static void gnssNiResponse(LocationAPI* client, uint32_t id, GnssNiResponse response)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->gnssNiResponseCommand(client, id, response);
+    }
+}
+
+static void setControlCallbacks(LocationControlCallbacks& controlCallbacks)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->setControlCallbacksCommand(controlCallbacks);
+    }
+}
+
+static uint32_t enable(LocationTechnologyType techType)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->enableCommand(techType);
+    } else {
+        return 0;
+    }
+}
+
+static void disable(uint32_t id)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->disableCommand(id);
+    }
+}
+
+static uint32_t* gnssUpdateConfig(GnssConfig config)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->gnssUpdateConfigCommand(config);
+    } else {
+        return NULL;
+    }
+}
+
+static uint32_t gnssDeleteAidingData(GnssAidingData& data)
+{
+    if (NULL != gGnssAdapter) {
+        return gGnssAdapter->gnssDeleteAidingDataCommand(data);
+    } else {
+        return 0;
+    }
+}
+
+static void injectLocation(double latitude, double longitude, float accuracy)
+{
+   if (NULL != gGnssAdapter) {
+       gGnssAdapter->injectLocationCommand(latitude, longitude, accuracy);
+   }
+}
+
+static void injectTime(int64_t time, int64_t timeReference, int32_t uncertainty)
+{
+   if (NULL != gGnssAdapter) {
+       gGnssAdapter->injectTimeCommand(time, timeReference, uncertainty);
+   }
+}
+
+static void agpsInit(void* statusV4Cb) {
+
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->initAgpsCommand(statusV4Cb);
+    }
+}
+static void agpsDataConnOpen(
+        AGpsExtType agpsType, const char* apnName, int apnLen, int ipType) {
+
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->dataConnOpenCommand(
+                agpsType, apnName, apnLen, ipType);
+    }
+}
+static void agpsDataConnClosed(AGpsExtType agpsType) {
+
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->dataConnClosedCommand(agpsType);
+    }
+}
+static void agpsDataConnFailed(AGpsExtType agpsType) {
+
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->dataConnFailedCommand(agpsType);
+    }
+}
+
+static void getDebugReport(GnssDebugReport& report) {
+
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->getDebugReport(report);
+    }
+}
diff --git a/sdm845/loc-hal.pc.in b/sdm845/loc-hal.pc.in
new file mode 100644
index 0000000..c6ece74
--- /dev/null
+++ b/sdm845/loc-hal.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: loc-hal
+Description: QTI GPS Loc HAL
+Version: @VERSION
+Libs: -L${libdir} -lloc_core -lloc_eng_so -lloc_ds_api -lloc_api_v02
+Cflags: -I${includedir} -I${includedir}/loc-hal/utils -I${includedir}/loc-hal/core -I${includedir}/loc-hal
diff --git a/sdm845/location/Android.mk b/sdm845/location/Android.mk
new file mode 100644
index 0000000..6d2c9fa
--- /dev/null
+++ b/sdm845/location/Android.mk
@@ -0,0 +1,41 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := liblocation_api
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    libgps.utils \
+    libdl \
+    liblog
+
+LOCAL_SRC_FILES += \
+    LocationAPI.cpp \
+    LocationAPIClientBase.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums
+
+LOCAL_C_INCLUDES:= \
+    $(TARGET_OUT_HEADERS)/gps.utils
+
+LOCAL_COPY_HEADERS_TO:= liblocation_api/
+LOCAL_COPY_HEADERS:= \
+    LocationAPI.h \
+    LocationAPIClientBase.h \
+    location_interface.h
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/location/LocationAPI.cpp b/sdm845/location/LocationAPI.cpp
new file mode 100644
index 0000000..60a46fe
--- /dev/null
+++ b/sdm845/location/LocationAPI.cpp
@@ -0,0 +1,642 @@
+/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#define LOG_TAG "LocSvc_LocationAPI"
+
+#include <location_interface.h>
+#include <dlfcn.h>
+#include <log_util.h>
+#include <pthread.h>
+#include <map>
+
+typedef void* (getLocationInterface)();
+typedef std::map<LocationAPI*, LocationCallbacks> LocationClientMap;
+typedef struct {
+    LocationClientMap clientData;
+    LocationControlAPI* controlAPI;
+    LocationControlCallbacks controlCallbacks;
+    GnssInterface* gnssInterface;
+    GeofenceInterface* geofenceInterface;
+    FlpInterface* flpInterface;
+} LocationAPIData;
+static LocationAPIData gData = {};
+static pthread_mutex_t gDataMutex = PTHREAD_MUTEX_INITIALIZER;
+static bool gGnssLoadFailed = false;
+static bool gFlpLoadFailed = false;
+static bool gGeofenceLoadFailed = false;
+
+static bool needsGnssTrackingInfo(LocationCallbacks& locationCallbacks)
+{
+    return (locationCallbacks.gnssLocationInfoCb != nullptr ||
+            locationCallbacks.gnssSvCb != nullptr ||
+            locationCallbacks.gnssNmeaCb != nullptr ||
+            locationCallbacks.gnssMeasurementsCb != nullptr);
+}
+
+static bool isGnssClient(LocationCallbacks& locationCallbacks)
+{
+    return (locationCallbacks.gnssNiCb != nullptr ||
+            locationCallbacks.trackingCb != nullptr ||
+            locationCallbacks.gnssMeasurementsCb != nullptr);
+}
+
+static bool isFlpClient(LocationCallbacks& locationCallbacks)
+{
+    return (locationCallbacks.trackingCb != nullptr ||
+            locationCallbacks.batchingCb != nullptr);
+}
+
+static bool isGeofenceClient(LocationCallbacks& locationCallbacks)
+{
+    return (locationCallbacks.geofenceBreachCb != nullptr ||
+            locationCallbacks.geofenceStatusCb != nullptr);
+}
+
+static void* loadLocationInterface(const char* library, const char* name) {
+    LOC_LOGD("%s]: loading %s::%s ...", __func__, library, name);
+    if (NULL == library || NULL == name) {
+        return NULL;
+    }
+    getLocationInterface* getter = NULL;
+    const char *error = NULL;
+    dlerror();
+    void *handle = dlopen(library, RTLD_NOW);
+    if (NULL == handle || (error = dlerror()) != NULL)  {
+        LOC_LOGW("dlopen for %s failed, error = %s", library, error);
+    } else {
+        getter = (getLocationInterface*)dlsym(handle, name);
+        if ((error = dlerror()) != NULL)  {
+            LOC_LOGW("dlsym for %s::%s failed, error = %s", library, name, error);
+            getter = NULL;
+        }
+    }
+
+    if (NULL == getter) {
+        return (void*)getter;
+    } else {
+        return (*getter)();
+    }
+}
+
+LocationAPI*
+LocationAPI::createInstance(LocationCallbacks& locationCallbacks)
+{
+    if (nullptr == locationCallbacks.capabilitiesCb ||
+        nullptr == locationCallbacks.responseCb ||
+        nullptr == locationCallbacks.collectiveResponseCb) {
+        return NULL;
+    }
+
+    LocationAPI* newLocationAPI = new LocationAPI();
+    bool requestedCapabilities = false;
+
+    pthread_mutex_lock(&gDataMutex);
+
+    if (isGnssClient(locationCallbacks)) {
+        if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
+            gData.gnssInterface =
+                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+            if (NULL == gData.gnssInterface) {
+                gGnssLoadFailed = true;
+                LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
+            } else {
+                gData.gnssInterface->initialize();
+            }
+        }
+        if (NULL != gData.gnssInterface) {
+            gData.gnssInterface->addClient(newLocationAPI, locationCallbacks);
+            if (!requestedCapabilities) {
+                gData.gnssInterface->requestCapabilities(newLocationAPI);
+                requestedCapabilities = true;
+            }
+        }
+    }
+
+    if (isFlpClient(locationCallbacks)) {
+        if (NULL == gData.flpInterface && !gFlpLoadFailed) {
+            gData.flpInterface =
+                (FlpInterface*)loadLocationInterface("libflp.so", "getFlpInterface");
+            if (NULL == gData.flpInterface) {
+                gFlpLoadFailed = true;
+                LOC_LOGW("%s:%d]: No flp interface available", __func__, __LINE__);
+            } else {
+                gData.flpInterface->initialize();
+            }
+        }
+        if (NULL != gData.flpInterface) {
+            gData.flpInterface->addClient(newLocationAPI, locationCallbacks);
+            if (!requestedCapabilities) {
+                gData.flpInterface->requestCapabilities(newLocationAPI);
+                requestedCapabilities = true;
+            }
+        }
+    }
+
+    if (isGeofenceClient(locationCallbacks)) {
+        if (NULL == gData.geofenceInterface && !gGeofenceLoadFailed) {
+            gData.geofenceInterface =
+                (GeofenceInterface*)loadLocationInterface("libgeofence.so", "getGeofenceInterface");
+            if (NULL == gData.geofenceInterface) {
+                gGeofenceLoadFailed = true;
+                LOC_LOGW("%s:%d]: No geofence interface available", __func__, __LINE__);
+            } else {
+                gData.geofenceInterface->initialize();
+            }
+        }
+        if (NULL != gData.geofenceInterface) {
+            gData.geofenceInterface->addClient(newLocationAPI, locationCallbacks);
+            if (!requestedCapabilities) {
+                gData.geofenceInterface->requestCapabilities(newLocationAPI);
+                requestedCapabilities = true;
+            }
+        }
+    }
+
+    gData.clientData[newLocationAPI] = locationCallbacks;
+
+    pthread_mutex_unlock(&gDataMutex);
+
+    return newLocationAPI;
+}
+
+void
+LocationAPI::destroy()
+{
+    delete this;
+}
+
+LocationAPI::LocationAPI()
+{
+    LOC_LOGD("LOCATION API CONSTRUCTOR");
+}
+
+LocationAPI::~LocationAPI()
+{
+    LOC_LOGD("LOCATION API DESTRUCTOR");
+    pthread_mutex_lock(&gDataMutex);
+
+    auto it = gData.clientData.find(this);
+    if (it != gData.clientData.end()) {
+        if (isGnssClient(it->second) && NULL != gData.gnssInterface) {
+            gData.gnssInterface->removeClient(it->first);
+        }
+        if (isFlpClient(it->second) && NULL != gData.flpInterface) {
+            gData.flpInterface->removeClient(it->first);
+        }
+        if (isGeofenceClient(it->second) && NULL != gData.geofenceInterface) {
+            gData.geofenceInterface->removeClient(it->first);
+        }
+        gData.clientData.erase(it);
+    } else {
+        LOC_LOGE("%s:%d]: Location API client %p not found in client data",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::updateCallbacks(LocationCallbacks& locationCallbacks)
+{
+    if (nullptr == locationCallbacks.capabilitiesCb ||
+        nullptr == locationCallbacks.responseCb ||
+        nullptr == locationCallbacks.collectiveResponseCb) {
+        return;
+    }
+
+    pthread_mutex_lock(&gDataMutex);
+
+    if (isGnssClient(locationCallbacks)) {
+        if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
+            gData.gnssInterface =
+                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+            if (NULL == gData.gnssInterface) {
+                gGnssLoadFailed = true;
+                LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
+            } else {
+                gData.gnssInterface->initialize();
+            }
+        }
+        if (NULL != gData.gnssInterface) {
+            // either adds new Client or updates existing Client
+            gData.gnssInterface->addClient(this, locationCallbacks);
+        }
+    }
+
+    if (isFlpClient(locationCallbacks)) {
+        if (NULL == gData.flpInterface && !gFlpLoadFailed) {
+            gData.flpInterface =
+                (FlpInterface*)loadLocationInterface("libflp.so", "getFlpInterface");
+            if (NULL == gData.flpInterface) {
+                gFlpLoadFailed = true;
+                LOC_LOGW("%s:%d]: No flp interface available", __func__, __LINE__);
+            } else {
+                gData.flpInterface->initialize();
+            }
+        }
+        if (NULL != gData.flpInterface) {
+            // either adds new Client or updates existing Client
+            gData.flpInterface->addClient(this, locationCallbacks);
+        }
+    }
+
+    if (isGeofenceClient(locationCallbacks)) {
+        if (NULL == gData.geofenceInterface && !gGeofenceLoadFailed) {
+            gData.geofenceInterface =
+                (GeofenceInterface*)loadLocationInterface("libgeofence.so", "getGeofenceInterface");
+            if (NULL == gData.geofenceInterface) {
+                gGeofenceLoadFailed = true;
+                LOC_LOGW("%s:%d]: No geofence interface available", __func__, __LINE__);
+            } else {
+                gData.geofenceInterface->initialize();
+            }
+        }
+        if (NULL != gData.geofenceInterface) {
+            // either adds new Client or updates existing Client
+            gData.geofenceInterface->addClient(this, locationCallbacks);
+        }
+    }
+
+    gData.clientData[this] = locationCallbacks;
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+uint32_t
+LocationAPI::startTracking(LocationOptions& locationOptions)
+{
+    uint32_t id = 0;
+    pthread_mutex_lock(&gDataMutex);
+
+    auto it = gData.clientData.find(this);
+    if (it != gData.clientData.end()) {
+        if (gData.flpInterface != NULL && locationOptions.minDistance > 0) {
+            id = gData.flpInterface->startTracking(this, locationOptions);
+        } else if (gData.gnssInterface != NULL && needsGnssTrackingInfo(it->second)) {
+            id = gData.gnssInterface->startTracking(this, locationOptions);
+        } else if (gData.flpInterface != NULL) {
+            id = gData.flpInterface->startTracking(this, locationOptions);
+        } else if (gData.gnssInterface != NULL) {
+            id = gData.gnssInterface->startTracking(this, locationOptions);
+        } else {
+            LOC_LOGE("%s:%d]: No gnss/flp interface available for Location API client %p ",
+                     __func__, __LINE__, this);
+        }
+    } else {
+        LOC_LOGE("%s:%d]: Location API client %p not found in client data",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return id;
+}
+
+void
+LocationAPI::stopTracking(uint32_t id)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    auto it = gData.clientData.find(this);
+    if (it != gData.clientData.end()) {
+        // we don't know if tracking was started on flp or gnss, so we call stop on both, where
+        // stopTracking call to the incorrect interface will fail without response back to client
+        if (gData.gnssInterface != NULL) {
+            gData.gnssInterface->stopTracking(this, id);
+        }
+        if (gData.flpInterface != NULL) {
+            gData.flpInterface->stopTracking(this, id);
+        }
+        if (gData.flpInterface != NULL && gData.gnssInterface != NULL) {
+            LOC_LOGE("%s:%d]: No gnss/flp interface available for Location API client %p ",
+                     __func__, __LINE__, this);
+        }
+    } else {
+        LOC_LOGE("%s:%d]: Location API client %p not found in client data",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::updateTrackingOptions(uint32_t id, LocationOptions& locationOptions)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    auto it = gData.clientData.find(this);
+    if (it != gData.clientData.end()) {
+        // we don't know if tracking was started on flp or gnss, so we call update on both, where
+        // updateTracking call to the incorrect interface will fail without response back to client
+        if (gData.gnssInterface != NULL) {
+            gData.gnssInterface->updateTrackingOptions(this, id, locationOptions);
+        }
+        if (gData.flpInterface != NULL) {
+            gData.flpInterface->updateTrackingOptions(this, id, locationOptions);
+        }
+        if (gData.flpInterface != NULL && gData.gnssInterface != NULL) {
+            LOC_LOGE("%s:%d]: No gnss/flp interface available for Location API client %p ",
+                     __func__, __LINE__, this);
+        }
+    } else {
+        LOC_LOGE("%s:%d]: Location API client %p not found in client data",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+uint32_t
+LocationAPI::startBatching(LocationOptions& locationOptions)
+{
+    uint32_t id = 0;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.flpInterface != NULL) {
+        id = gData.flpInterface->startBatching(this, locationOptions);
+    } else {
+        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return id;
+}
+
+void
+LocationAPI::stopBatching(uint32_t id)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.flpInterface != NULL) {
+        gData.flpInterface->stopBatching(this, id);
+    } else {
+        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::updateBatchingOptions(uint32_t id, LocationOptions& locationOptions)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.flpInterface != NULL) {
+        gData.flpInterface->updateBatchingOptions(this,
+                                                  id,
+                                                  locationOptions);
+    } else {
+        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::getBatchedLocations(uint32_t id, size_t count)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.flpInterface != NULL) {
+        gData.flpInterface->getBatchedLocations(this, id, count);
+    } else {
+        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+uint32_t*
+LocationAPI::addGeofences(size_t count, GeofenceOption* options, GeofenceInfo* info)
+{
+    uint32_t* ids = NULL;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.geofenceInterface != NULL) {
+        ids = gData.geofenceInterface->addGeofences(this, count, options, info);
+    } else {
+        LOC_LOGE("%s:%d]: No geofence interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return ids;
+}
+
+void
+LocationAPI::removeGeofences(size_t count, uint32_t* ids)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.geofenceInterface != NULL) {
+        gData.geofenceInterface->removeGeofences(this, count, ids);
+    } else {
+        LOC_LOGE("%s:%d]: No geofence interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::modifyGeofences(size_t count, uint32_t* ids, GeofenceOption* options)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.geofenceInterface != NULL) {
+        gData.geofenceInterface->modifyGeofences(this, count, ids, options);
+    } else {
+        LOC_LOGE("%s:%d]: No geofence interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::pauseGeofences(size_t count, uint32_t* ids)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.geofenceInterface != NULL) {
+        gData.geofenceInterface->pauseGeofences(this, count, ids);
+    } else {
+        LOC_LOGE("%s:%d]: No geofence interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::resumeGeofences(size_t count, uint32_t* ids)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.geofenceInterface != NULL) {
+        gData.geofenceInterface->resumeGeofences(this, count, ids);
+    } else {
+        LOC_LOGE("%s:%d]: No geofence interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+void
+LocationAPI::gnssNiResponse(uint32_t id, GnssNiResponse response)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.gnssInterface != NULL) {
+        gData.gnssInterface->gnssNiResponse(this, id, response);
+    } else {
+        LOC_LOGE("%s:%d]: No gnss interface available for Location API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+LocationControlAPI*
+LocationControlAPI::createInstance(LocationControlCallbacks& locationControlCallbacks)
+{
+    LocationControlAPI* controlAPI = NULL;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (nullptr != locationControlCallbacks.responseCb && NULL == gData.controlAPI) {
+        if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
+            gData.gnssInterface =
+                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+            if (NULL == gData.gnssInterface) {
+                gGnssLoadFailed = true;
+                LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
+            } else {
+                gData.gnssInterface->initialize();
+            }
+        }
+        if (NULL != gData.gnssInterface) {
+            gData.controlAPI = new LocationControlAPI();
+            gData.controlCallbacks = locationControlCallbacks;
+            gData.gnssInterface->setControlCallbacks(locationControlCallbacks);
+            controlAPI = gData.controlAPI;
+        }
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return controlAPI;
+}
+
+void
+LocationControlAPI::destroy()
+{
+    delete this;
+}
+
+LocationControlAPI::LocationControlAPI()
+{
+    LOC_LOGD("LOCATION CONTROL API CONSTRUCTOR");
+}
+
+LocationControlAPI::~LocationControlAPI()
+{
+    LOC_LOGD("LOCATION CONTROL API DESTRUCTOR");
+    pthread_mutex_lock(&gDataMutex);
+
+    gData.controlAPI = NULL;
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+uint32_t
+LocationControlAPI::enable(LocationTechnologyType techType)
+{
+    uint32_t id = 0;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.gnssInterface != NULL) {
+        id = gData.gnssInterface->enable(techType);
+    } else {
+        LOC_LOGE("%s:%d]: No gnss interface available for Location Control API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return id;
+}
+
+void
+LocationControlAPI::disable(uint32_t id)
+{
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.gnssInterface != NULL) {
+        gData.gnssInterface->disable(id);
+    } else {
+        LOC_LOGE("%s:%d]: No gnss interface available for Location Control API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+}
+
+uint32_t*
+LocationControlAPI::gnssUpdateConfig(GnssConfig config)
+{
+    uint32_t* ids = NULL;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.gnssInterface != NULL) {
+        ids = gData.gnssInterface->gnssUpdateConfig(config);
+    } else {
+        LOC_LOGE("%s:%d]: No gnss interface available for Location Control API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return ids;
+}
+
+uint32_t
+LocationControlAPI::gnssDeleteAidingData(GnssAidingData& data)
+{
+    uint32_t id = 0;
+    pthread_mutex_lock(&gDataMutex);
+
+    if (gData.gnssInterface != NULL) {
+        id = gData.gnssInterface->gnssDeleteAidingData(data);
+    } else {
+        LOC_LOGE("%s:%d]: No gnss interface available for Location Control API client %p ",
+                 __func__, __LINE__, this);
+    }
+
+    pthread_mutex_unlock(&gDataMutex);
+    return id;
+}
diff --git a/sdm845/location/LocationAPI.h b/sdm845/location/LocationAPI.h
new file mode 100644
index 0000000..88b1554
--- /dev/null
+++ b/sdm845/location/LocationAPI.h
@@ -0,0 +1,926 @@
+/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOCATION_H
+#define LOCATION_H
+
+#include <vector>
+#include <stdint.h>
+#include <functional>
+
+#define GNSS_NI_REQUESTOR_MAX  256
+#define GNSS_NI_MESSAGE_ID_MAX 2048
+#define GNSS_SV_MAX 64
+#define GNSS_MEASUREMENTS_MAX 64
+#define GNSS_UTC_TIME_OFFSET   (3657)
+
+typedef enum {
+    LOCATION_ERROR_SUCCESS = 0,
+    LOCATION_ERROR_GENERAL_FAILURE,
+    LOCATION_ERROR_CALLBACK_MISSING,
+    LOCATION_ERROR_INVALID_PARAMETER,
+    LOCATION_ERROR_ID_EXISTS,
+    LOCATION_ERROR_ID_UNKNOWN,
+    LOCATION_ERROR_ALREADY_STARTED,
+    LOCATION_ERROR_GEOFENCES_AT_MAX,
+    LOCATION_ERROR_NOT_SUPPORTED
+} LocationError;
+
+// Flags to indicate which values are valid in a Location
+typedef uint16_t LocationFlagsMask;
+typedef enum {
+    LOCATION_HAS_LAT_LONG_BIT          = (1<<0), // location has valid latitude and longitude
+    LOCATION_HAS_ALTITUDE_BIT          = (1<<1), // location has valid altitude
+    LOCATION_HAS_SPEED_BIT             = (1<<2), // location has valid speed
+    LOCATION_HAS_BEARING_BIT           = (1<<3), // location has valid bearing
+    LOCATION_HAS_ACCURACY_BIT          = (1<<4), // location has valid accuracy
+    LOCATION_HAS_VERTICAL_ACCURACY_BIT = (1<<5), // location has valid vertical accuracy
+    LOCATION_HAS_SPEED_ACCURACY_BIT    = (1<<6), // location has valid speed accuracy
+    LOCATION_HAS_BEARING_ACCURACY_BIT  = (1<<7), // location has valid bearing accuracy
+} LocationFlagsBits;
+
+typedef uint16_t LocationTechnologyMask;
+typedef enum {
+    LOCATION_TECHNOLOGY_GNSS_BIT     = (1<<0), // location was calculated using GNSS
+    LOCATION_TECHNOLOGY_CELL_BIT     = (1<<1), // location was calculated using Cell
+    LOCATION_TECHNOLOGY_WIFI_BIT     = (1<<2), // location was calculated using WiFi
+    LOCATION_TECHNOLOGY_SENSORS_BIT  = (1<<3), // location was calculated using Sensors
+} LocationTechnologyBits;
+
+typedef enum {
+    LOCATION_RELIABILITY_NOT_SET = 0,
+    LOCATION_RELIABILITY_VERY_LOW,
+    LOCATION_RELIABILITY_LOW,
+    LOCATION_RELIABILITY_MEDIUM,
+    LOCATION_RELIABILITY_HIGH,
+} LocationReliability;
+
+typedef uint32_t GnssLocationInfoFlagMask;
+typedef enum {
+    GNSS_LOCATION_INFO_ALTITUDE_MEAN_SEA_LEVEL_BIT      = (1<<0), // valid altitude mean sea level
+    GNSS_LOCATION_INFO_DOP_BIT                          = (1<<1), // valid pdop, hdop, and vdop
+    GNSS_LOCATION_INFO_MAGNETIC_DEVIATION_BIT           = (1<<2), // valid magnetic deviation
+    GNSS_LOCATION_INFO_HOR_RELIABILITY_BIT              = (1<<3), // valid horizontal reliability
+    GNSS_LOCATION_INFO_VER_RELIABILITY_BIT              = (1<<4), // valid vertical reliability
+    GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MAJOR_BIT = (1<<5), // valid elipsode semi major
+    GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MINOR_BIT = (1<<6), // valid elipsode semi minor
+    GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_AZIMUTH_BIT    = (1<<7),// valid accuracy elipsode azimuth
+} GnssLocationInfoFlagBits;
+
+typedef enum {
+    GEOFENCE_BREACH_ENTER = 0,
+    GEOFENCE_BREACH_EXIT,
+    GEOFENCE_BREACH_DWELL_IN,
+    GEOFENCE_BREACH_DWELL_OUT,
+    GEOFENCE_BREACH_UNKNOWN,
+} GeofenceBreachType;
+
+typedef uint16_t GeofenceBreachTypeMask;
+typedef enum {
+    GEOFENCE_BREACH_ENTER_BIT     = (1<<0),
+    GEOFENCE_BREACH_EXIT_BIT      = (1<<1),
+    GEOFENCE_BREACH_DWELL_IN_BIT  = (1<<2),
+    GEOFENCE_BREACH_DWELL_OUT_BIT = (1<<3),
+} GeofenceBreachTypeBits;
+
+typedef enum {
+    GEOFENCE_STATUS_AVAILABILE_NO = 0,
+    GEOFENCE_STATUS_AVAILABILE_YES,
+} GeofenceStatusAvailable;
+
+typedef uint32_t LocationCapabilitiesMask;
+typedef enum {
+    // supports startTracking API with minInterval param
+    LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT           = (1<<0),
+    // supports startBatching API with minInterval param
+    LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT           = (1<<1),
+    // supports startTracking API with minDistance param
+    LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT       = (1<<2),
+    // supports startBatching API with minDistance param
+    LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT       = (1<<3),
+    // supports addGeofences API
+    LOCATION_CAPABILITIES_GEOFENCE_BIT                      = (1<<4),
+    // supports GnssMeasurementsCallback
+    LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT             = (1<<5),
+    // supports startTracking/startBatching API with LocationOptions.mode of MSB (Ms Based)
+    LOCATION_CAPABILITIES_GNSS_MSB_BIT                      = (1<<6),
+    // supports startTracking/startBatching API with LocationOptions.mode of MSA (MS Assisted)
+    LOCATION_CAPABILITIES_GNSS_MSA_BIT                      = (1<<7),
+} LocationCapabilitiesBits;
+
+typedef enum {
+    LOCATION_TECHNOLOGY_TYPE_GNSS = 0,
+} LocationTechnologyType;
+
+// Configures how GPS is locked when GPS is disabled (through GnssDisable)
+typedef enum {
+    GNSS_CONFIG_GPS_LOCK_NONE = 0, // gps is not locked when GPS is disabled (GnssDisable)
+    GNSS_CONFIG_GPS_LOCK_MO,       // gps mobile originated (MO) is locked when GPS is disabled
+    GNSS_CONFIG_GPS_LOCK_NI,       // gps network initiated (NI) is locked when GPS is disabled
+    GNSS_CONFIG_GPS_LOCK_MO_AND_NI,// gps MO and NI is locked when GPS is disabled
+} GnssConfigGpsLock;
+
+// SUPL version
+typedef enum {
+    GNSS_CONFIG_SUPL_VERSION_1_0_0 = 1,
+    GNSS_CONFIG_SUPL_VERSION_2_0_0,
+    GNSS_CONFIG_SUPL_VERSION_2_0_2,
+} GnssConfigSuplVersion;
+
+// LTE Positioning Profile
+typedef enum {
+    GNSS_CONFIG_LPP_PROFILE_RRLP_ON_LTE = 0,              // RRLP on LTE (Default)
+    GNSS_CONFIG_LPP_PROFILE_USER_PLANE,                   // LPP User Plane (UP) on LTE
+    GNSS_CONFIG_LPP_PROFILE_CONTROL_PLANE,                // LPP_Control_Plane (CP)
+    GNSS_CONFIG_LPP_PROFILE_USER_PLANE_AND_CONTROL_PLANE, // Both LPP UP and CP
+} GnssConfigLppProfile;
+
+// Technology for LPPe Control Plane
+typedef uint16_t GnssConfigLppeControlPlaneMask;
+typedef enum {
+    GNSS_CONFIG_LPPE_CONTROL_PLANE_DBH_BIT                  = (1<<0), // DBH
+    GNSS_CONFIG_LPPE_CONTROL_PLANE_WLAN_AP_MEASUREMENTS_BIT = (1<<1), // WLAN_AP_MEASUREMENTS
+} GnssConfigLppeControlPlaneBits;
+
+// Technology for LPPe User Plane
+typedef uint16_t GnssConfigLppeUserPlaneMask;
+typedef enum {
+    GNSS_CONFIG_LPPE_USER_PLANE_DBH_BIT                  = (1<<0), // DBH
+    GNSS_CONFIG_LPPE_USER_PLANE_WLAN_AP_MEASUREMENTS_BIT = (1<<1), // WLAN_AP_MEASUREMENTS
+} GnssConfigLppeUserPlaneBits;
+
+// Positioning Protocol on A-GLONASS system
+typedef uint16_t GnssConfigAGlonassPositionProtocolMask;
+typedef enum {
+    GNSS_CONFIG_RRC_CONTROL_PLANE_BIT = (1<<0),  // RRC Control Plane
+    GNSS_CONFIG_RRLP_USER_PLANE_BIT   = (1<<1),  // RRLP User Plane
+    GNSS_CONFIG_LLP_USER_PLANE_BIT    = (1<<2),  // LPP User Plane
+    GNSS_CONFIG_LLP_CONTROL_PLANE_BIT = (1<<3),  // LPP Control Plane
+} GnssConfigAGlonassPositionProtocolBits;
+
+typedef enum {
+    GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_NO = 0,
+    GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_YES,
+} GnssConfigEmergencyPdnForEmergencySupl;
+
+typedef enum {
+    GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_NO = 0,
+    GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_YES,
+} GnssConfigSuplEmergencyServices;
+
+typedef uint16_t GnssConfigSuplModeMask;
+typedef enum {
+    GNSS_CONFIG_SUPL_MODE_MSB = (1<<0),
+    GNSS_CONFIG_SUPL_MODE_MSA = (1<<1),
+} GnssConfigSuplModeBits;
+
+typedef uint32_t GnssConfigFlagsMask;
+typedef enum {
+    GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT                   = (1<<0),
+    GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT               = (1<<1),
+    GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT        = (1<<2),
+    GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT                = (1<<3),
+    GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT         = (1<<4),
+    GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT            = (1<<5),
+    GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT = (1<<6),
+    GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT         = (1<<7),
+    GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT                 = (1<<8),
+    GNSS_CONFIG_FLAGS_SUPL_MODE_BIT                        = (1<<9),
+} GnssConfigFlagsBits;
+
+typedef enum {
+    GNSS_NI_ENCODING_TYPE_NONE = 0,
+    GNSS_NI_ENCODING_TYPE_GSM_DEFAULT,
+    GNSS_NI_ENCODING_TYPE_UTF8,
+    GNSS_NI_ENCODING_TYPE_UCS2,
+} GnssNiEncodingType;
+
+typedef enum {
+    GNSS_NI_TYPE_VOICE = 0,
+    GNSS_NI_TYPE_SUPL,
+    GNSS_NI_TYPE_CONTROL_PLANE,
+    GNSS_NI_TYPE_EMERGENCY_SUPL
+} GnssNiType;
+
+typedef uint16_t GnssNiOptionsMask;
+typedef enum {
+    GNSS_NI_OPTIONS_NOTIFICATION     = (1<<0),
+    GNSS_NI_OPTIONS_VERIFICATION     = (1<<1),
+    GNSS_NI_OPTIONS_PRIVACY_OVERRIDE = (1<<2),
+} GnssNiOptionsBits;
+
+typedef enum {
+    GNSS_NI_RESPONSE_ACCEPT = 1,
+    GNSS_NI_RESPONSE_DENY,
+    GNSS_NI_RESPONSE_NO_RESPONSE,
+    GNSS_NI_RESPONSE_IGNORE,
+} GnssNiResponse;
+
+typedef enum {
+    GNSS_SV_TYPE_UNKNOWN = 0,
+    GNSS_SV_TYPE_GPS,
+    GNSS_SV_TYPE_SBAS,
+    GNSS_SV_TYPE_GLONASS,
+    GNSS_SV_TYPE_QZSS,
+    GNSS_SV_TYPE_BEIDOU,
+    GNSS_SV_TYPE_GALILEO,
+} GnssSvType;
+
+typedef enum {
+    GNSS_EPH_TYPE_UNKNOWN = 0,
+    GNSS_EPH_TYPE_EPHEMERIS,
+    GNSS_EPH_TYPE_ALMANAC,
+} GnssEphemerisType;
+
+typedef enum {
+    GNSS_EPH_SOURCE_UNKNOWN = 0,
+    GNSS_EPH_SOURCE_DEMODULATED,
+    GNSS_EPH_SOURCE_SUPL_PROVIDED,
+    GNSS_EPH_SOURCE_OTHER_SERVER_PROVIDED,
+    GNSS_EPH_SOURCE_LOCAL,
+} GnssEphemerisSource;
+
+typedef enum {
+    GNSS_EPH_HEALTH_UNKNOWN = 0,
+    GNSS_EPH_HEALTH_GOOD,
+    GNSS_EPH_HEALTH_BAD,
+} GnssEphemerisHealth;
+
+typedef uint16_t GnssSvOptionsMask;
+typedef enum {
+    GNSS_SV_OPTIONS_HAS_EPHEMER_BIT = (1<<0),
+    GNSS_SV_OPTIONS_HAS_ALMANAC_BIT = (1<<1),
+    GNSS_SV_OPTIONS_USED_IN_FIX_BIT = (1<<2),
+} GnssSvOptionsBits;
+
+typedef enum {
+    GNSS_ASSISTANCE_TYPE_SUPL = 0,
+    GNSS_ASSISTANCE_TYPE_C2K,
+} GnssAssistanceType;
+
+typedef enum {
+    GNSS_SUPL_MODE_STANDALONE = 0,
+    GNSS_SUPL_MODE_MSB,
+    GNSS_SUPL_MODE_MSA,
+} GnssSuplMode;
+
+typedef uint16_t GnssMeasurementsAdrStateMask;
+typedef enum {
+    GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_UNKNOWN         = 0,
+    GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_VALID_BIT       = (1<<0),
+    GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_RESET_BIT       = (1<<1),
+    GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_CYCLE_SLIP_BIT  = (1<<2),
+} GnssMeasurementsAdrStateBits;
+
+typedef uint32_t GnssMeasurementsDataFlagsMask;
+typedef enum {
+    GNSS_MEASUREMENTS_DATA_SV_ID_BIT                        = (1<<0),
+    GNSS_MEASUREMENTS_DATA_SV_TYPE_BIT                      = (1<<1),
+    GNSS_MEASUREMENTS_DATA_STATE_BIT                        = (1<<2),
+    GNSS_MEASUREMENTS_DATA_RECEIVED_SV_TIME_BIT             = (1<<3),
+    GNSS_MEASUREMENTS_DATA_RECEIVED_SV_TIME_UNCERTAINTY_BIT = (1<<4),
+    GNSS_MEASUREMENTS_DATA_CARRIER_TO_NOISE_BIT             = (1<<5),
+    GNSS_MEASUREMENTS_DATA_PSEUDORANGE_RATE_BIT             = (1<<6),
+    GNSS_MEASUREMENTS_DATA_PSEUDORANGE_RATE_UNCERTAINTY_BIT = (1<<7),
+    GNSS_MEASUREMENTS_DATA_ADR_STATE_BIT                    = (1<<8),
+    GNSS_MEASUREMENTS_DATA_ADR_BIT                          = (1<<9),
+    GNSS_MEASUREMENTS_DATA_ADR_UNCERTAINTY_BIT              = (1<<10),
+    GNSS_MEASUREMENTS_DATA_CARRIER_FREQUENCY_BIT            = (1<<11),
+    GNSS_MEASUREMENTS_DATA_CARRIER_CYCLES_BIT               = (1<<12),
+    GNSS_MEASUREMENTS_DATA_CARRIER_PHASE_BIT                = (1<<13),
+    GNSS_MEASUREMENTS_DATA_CARRIER_PHASE_UNCERTAINTY_BIT    = (1<<14),
+    GNSS_MEASUREMENTS_DATA_MULTIPATH_INDICATOR_BIT          = (1<<15),
+    GNSS_MEASUREMENTS_DATA_SIGNAL_TO_NOISE_RATIO_BIT        = (1<<16),
+    GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT       = (1<<17),
+} GnssMeasurementsDataFlagsBits;
+
+typedef uint32_t GnssMeasurementsStateMask;
+typedef enum {
+    GNSS_MEASUREMENTS_STATE_UNKNOWN_BIT               = 0,
+    GNSS_MEASUREMENTS_STATE_CODE_LOCK_BIT             = (1<<0),
+    GNSS_MEASUREMENTS_STATE_BIT_SYNC_BIT              = (1<<1),
+    GNSS_MEASUREMENTS_STATE_SUBFRAME_SYNC_BIT         = (1<<2),
+    GNSS_MEASUREMENTS_STATE_TOW_DECODED_BIT           = (1<<3),
+    GNSS_MEASUREMENTS_STATE_MSEC_AMBIGUOUS_BIT        = (1<<4),
+    GNSS_MEASUREMENTS_STATE_SYMBOL_SYNC_BIT           = (1<<5),
+    GNSS_MEASUREMENTS_STATE_GLO_STRING_SYNC_BIT       = (1<<6),
+    GNSS_MEASUREMENTS_STATE_GLO_TOD_DECODED_BIT       = (1<<7),
+    GNSS_MEASUREMENTS_STATE_BDS_D2_BIT_SYNC_BIT       = (1<<8),
+    GNSS_MEASUREMENTS_STATE_BDS_D2_SUBFRAME_SYNC_BIT  = (1<<9),
+    GNSS_MEASUREMENTS_STATE_GAL_E1BC_CODE_LOCK_BIT    = (1<<10),
+    GNSS_MEASUREMENTS_STATE_GAL_E1C_2ND_CODE_LOCK_BIT = (1<<11),
+    GNSS_MEASUREMENTS_STATE_GAL_E1B_PAGE_SYNC_BIT     = (1<<12),
+    GNSS_MEASUREMENTS_STATE_SBAS_SYNC_BIT             = (1<<13),
+} GnssMeasurementsStateBits;
+
+typedef enum {
+    GNSS_MEASUREMENTS_MULTIPATH_INDICATOR_UNKNOWN = 0,
+    GNSS_MEASUREMENTS_MULTIPATH_INDICATOR_PRESENT,
+    GNSS_MEASUREMENTS_MULTIPATH_INDICATOR_NOT_PRESENT,
+} GnssMeasurementsMultipathIndicator;
+
+typedef uint32_t GnssMeasurementsClockFlagsMask;
+typedef enum {
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_LEAP_SECOND_BIT                  = (1<<0),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_TIME_BIT                         = (1<<1),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_TIME_UNCERTAINTY_BIT             = (1<<2),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_FULL_BIAS_BIT                    = (1<<3),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_BIAS_BIT                         = (1<<4),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_BIAS_UNCERTAINTY_BIT             = (1<<5),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_DRIFT_BIT                        = (1<<6),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_DRIFT_UNCERTAINTY_BIT            = (1<<7),
+    GNSS_MEASUREMENTS_CLOCK_FLAGS_HW_CLOCK_DISCONTINUITY_COUNT_BIT = (1<<8),
+} GnssMeasurementsClockFlagsBits;
+
+typedef uint32_t GnssAidingDataSvMask;
+typedef enum {
+    GNSS_AIDING_DATA_SV_EPHEMERIS    = (1<<0), // ephemeris
+    GNSS_AIDING_DATA_SV_ALMANAC      = (1<<1), // almanac
+    GNSS_AIDING_DATA_SV_HEALTH       = (1<<2), // health
+    GNSS_AIDING_DATA_SV_DIRECTION    = (1<<3), // direction
+    GNSS_AIDING_DATA_SV_STEER        = (1<<4), // steer
+    GNSS_AIDING_DATA_SV_ALMANAC_CORR = (1<<5), // almanac correction
+    GNSS_AIDING_DATA_SV_BLACKLIST    = (1<<6), // blacklist SVs
+    GNSS_AIDING_DATA_SV_SA_DATA      = (1<<7), // sensitivity assistance data
+    GNSS_AIDING_DATA_SV_NO_EXIST     = (1<<8), // SV does not exist
+    GNSS_AIDING_DATA_SV_IONOSPHERE   = (1<<9), // ionosphere correction
+    GNSS_AIDING_DATA_SV_TIME         = (1<<10),// reset satellite time
+} GnssAidingDataSvBits;
+
+typedef uint32_t GnssAidingDataSvTypeMask;
+typedef enum {
+    GNSS_AIDING_DATA_SV_TYPE_GPS      = (1<<0),
+    GNSS_AIDING_DATA_SV_TYPE_GLONASS  = (1<<1),
+    GNSS_AIDING_DATA_SV_TYPE_QZSS     = (1<<2),
+    GNSS_AIDING_DATA_SV_TYPE_BEIDOU   = (1<<3),
+    GNSS_AIDING_DATA_SV_TYPE_GALILEO  = (1<<4),
+} GnssAidingDataSvTypeBits;
+
+typedef struct {
+    GnssAidingDataSvMask svMask;         // bitwise OR of GnssAidingDataSvBits
+    GnssAidingDataSvTypeMask svTypeMask; // bitwise OR of GnssAidingDataSvTypeBits
+} GnssAidingDataSv;
+
+typedef uint32_t GnssAidingDataCommonMask;
+typedef enum {
+    GNSS_AIDING_DATA_COMMON_POSITION      = (1<<0), // position estimate
+    GNSS_AIDING_DATA_COMMON_TIME          = (1<<1), // reset all clock values
+    GNSS_AIDING_DATA_COMMON_UTC           = (1<<2), // UTC estimate
+    GNSS_AIDING_DATA_COMMON_RTI           = (1<<3), // RTI
+    GNSS_AIDING_DATA_COMMON_FREQ_BIAS_EST = (1<<4), // frequency bias estimate
+    GNSS_AIDING_DATA_COMMON_CELLDB        = (1<<5), // all celldb info
+} GnssAidingDataCommonBits;
+
+typedef struct {
+    GnssAidingDataCommonMask mask; // bitwise OR of GnssAidingDataCommonBits
+} GnssAidingDataCommon;
+
+typedef struct {
+    bool deleteAll;              // if true, delete all aiding data and ignore other params
+    GnssAidingDataSv sv;         // SV specific aiding data
+    GnssAidingDataCommon common; // common aiding data
+} GnssAidingData;
+
+typedef struct {
+    size_t size;             // set to sizeof(Location)
+    LocationFlagsMask flags; // bitwise OR of LocationFlagsBits to mark which params are valid
+    uint64_t timestamp;      // UTC timestamp for location fix, milliseconds since January 1, 1970
+    double latitude;         // in degrees
+    double longitude;        // in degrees
+    double altitude;         // in meters above the WGS 84 reference ellipsoid
+    float speed;             // in meters per second
+    float bearing;           // in degrees; range [0, 360)
+    float accuracy;          // in meters
+    float verticalAccuracy;  // in meters
+    float speedAccuracy;     // in meters/second
+    float bearingAccuracy;   // in degrees (0 to 359.999)
+    LocationTechnologyMask techMask;
+} Location;
+
+typedef struct  {
+    size_t size;          // set to sizeof(LocationOptions)
+    uint32_t minInterval; // in milliseconds
+    uint32_t minDistance; // in meters. if minDistance > 0, gnssSvCallback/gnssNmeaCallback/
+                          // gnssMeasurementsCallback may not be called
+    GnssSuplMode mode;    // Standalone/MS-Based/MS-Assisted
+} LocationOptions;
+
+typedef struct {
+    size_t size;                            // set to sizeof(GeofenceOption)
+    GeofenceBreachTypeMask breachTypeMask;  // bitwise OR of GeofenceBreachTypeBits
+    uint32_t responsiveness;                // in milliseconds
+    uint32_t dwellTime;                     // in seconds
+} GeofenceOption;
+
+typedef struct  {
+    size_t size;      // set to sizeof(GeofenceInfo)
+    double latitude;  // in degrees
+    double longitude; // in degrees
+    double radius;    // in meters
+} GeofenceInfo;
+
+typedef struct {
+    size_t size;             // set to sizeof(GeofenceBreachNotification)
+    size_t count;            // number of ids in array
+    uint32_t* ids;           // array of ids that have breached
+    Location location;       // location associated with breach
+    GeofenceBreachType type; // type of breach
+    uint64_t timestamp;      // timestamp of breach
+} GeofenceBreachNotification;
+
+typedef struct {
+    size_t size;                       // set to sizeof(GeofenceBreachNotification)
+    GeofenceStatusAvailable available; // GEOFENCE_STATUS_AVAILABILE_NO/_YES
+    LocationTechnologyType techType;   // GNSS
+} GeofenceStatusNotification;
+
+typedef struct {
+    size_t size;                        // set to sizeof(GnssLocationInfo)
+    GnssLocationInfoFlagMask flags;     // bitwise OR of GnssLocationInfoBits for param validity
+    float altitudeMeanSeaLevel;         // altitude wrt mean sea level
+    float pdop;                         // position dilusion of precision
+    float hdop;                         // horizontal dilusion of precision
+    float vdop;                         // vertical dilusion of precision
+    float magneticDeviation;            // magnetic deviation
+    LocationReliability horReliability; // horizontal reliability
+    LocationReliability verReliability; // vertical reliability
+    float horUncEllipseSemiMajor;       // horizontal elliptical accuracy semi-major axis
+    float horUncEllipseSemiMinor;       // horizontal elliptical accuracy semi-minor axis
+    float horUncEllipseOrientAzimuth;   // horizontal elliptical accuracy azimuth
+} GnssLocationInfoNotification;
+
+typedef struct {
+    size_t size;                           // set to sizeof(GnssNiNotification)
+    GnssNiType type;                       // type of NI (Voice, SUPL, Control Plane)
+    GnssNiOptionsMask options;             // bitwise OR of GnssNiOptionsBits
+    uint32_t timeout;                      // time (seconds) to wait for user input
+    GnssNiResponse timeoutResponse;        // the response that should be sent when timeout expires
+    char requestor[GNSS_NI_REQUESTOR_MAX]; // the requestor that is making the request
+    GnssNiEncodingType requestorEncoding;  // the encoding type for requestor
+    char message[GNSS_NI_MESSAGE_ID_MAX];  // the message to show user
+    GnssNiEncodingType messageEncoding;    // the encoding type for message
+    char extras[GNSS_NI_MESSAGE_ID_MAX];
+} GnssNiNotification;
+
+typedef struct {
+    size_t size;       // set to sizeof(GnssSv)
+    uint16_t svId;     // Unique Identifier
+    GnssSvType type;   // type of SV (GPS, SBAS, GLONASS, QZSS, BEIDOU, GALILEO)
+    float cN0Dbhz;     // signal strength
+    float elevation;   // elevation of SV (in degrees)
+    float azimuth;     // azimuth of SV (in degrees)
+    GnssSvOptionsMask gnssSvOptionsMask; // Bitwise OR of GnssSvOptionsBits
+} GnssSv;
+
+typedef struct {
+    size_t size;             // set to sizeof(GnssConfigSetAssistanceServer)
+    GnssAssistanceType type; // SUPL or C2K
+    const char* hostName;    // null terminated string
+    uint32_t port;           // port of server
+} GnssConfigSetAssistanceServer;
+
+typedef struct {
+    size_t size;                               // set to sizeof(GnssMeasurementsData)
+    GnssMeasurementsDataFlagsMask flags;       // bitwise OR of GnssMeasurementsDataFlagsBits
+    int16_t svId;
+    GnssSvType svType;
+    double timeOffsetNs;
+    GnssMeasurementsStateMask stateMask;       // bitwise OR of GnssMeasurementsStateBits
+    int64_t receivedSvTimeNs;
+    int64_t receivedSvTimeUncertaintyNs;
+    double carrierToNoiseDbHz;
+    double pseudorangeRateMps;
+    double pseudorangeRateUncertaintyMps;
+    GnssMeasurementsAdrStateMask adrStateMask; // bitwise OR of GnssMeasurementsAdrStateBits
+    double adrMeters;
+    double adrUncertaintyMeters;
+    float carrierFrequencyHz;
+    int64_t carrierCycles;
+    double carrierPhase;
+    double carrierPhaseUncertainty;
+    GnssMeasurementsMultipathIndicator multipathIndicator;
+    double signalToNoiseRatioDb;
+    double agcLevelDb;
+} GnssMeasurementsData;
+
+typedef struct {
+    size_t size;                          // set to sizeof(GnssMeasurementsClock)
+    GnssMeasurementsClockFlagsMask flags; // bitwise OR of GnssMeasurementsClockFlagsBits
+    int16_t leapSecond;
+    int64_t timeNs;
+    double timeUncertaintyNs;
+    int64_t fullBiasNs;
+    double biasNs;
+    double biasUncertaintyNs;
+    double driftNsps;
+    double driftUncertaintyNsps;
+    uint32_t hwClockDiscontinuityCount;
+} GnssMeasurementsClock;
+
+typedef struct {
+    size_t size;                 // set to sizeof(GnssSvNotification)
+    size_t count;                // number of SVs in the GnssSv array
+    GnssSv gnssSvs[GNSS_SV_MAX]; // information on a number of SVs
+} GnssSvNotification;
+
+typedef struct {
+    size_t size;         // set to sizeof(GnssNmeaNotification)
+    uint64_t timestamp;  // timestamp
+    const char* nmea;    // nmea text
+    size_t length;       // length of the nmea text
+} GnssNmeaNotification;
+
+typedef struct {
+    size_t size;         // set to sizeof(GnssMeasurementsNotification)
+    size_t count;        // number of items in GnssMeasurements array
+    GnssMeasurementsData measurements[GNSS_MEASUREMENTS_MAX];
+    GnssMeasurementsClock clock; // clock
+} GnssMeasurementsNotification;
+
+typedef struct {
+    size_t size;  // set to sizeof(GnssConfig)
+    GnssConfigFlagsMask flags; // bitwise OR of GnssConfigFlagsBits to mark which params are valid
+    GnssConfigGpsLock gpsLock;
+    GnssConfigSuplVersion suplVersion;
+    GnssConfigSetAssistanceServer assistanceServer;
+    GnssConfigLppProfile lppProfile;
+    GnssConfigLppeControlPlaneMask lppeControlPlaneMask;
+    GnssConfigLppeUserPlaneMask lppeUserPlaneMask;
+    GnssConfigAGlonassPositionProtocolMask aGlonassPositionProtocolMask;
+    GnssConfigEmergencyPdnForEmergencySupl emergencyPdnForEmergencySupl;
+    GnssConfigSuplEmergencyServices suplEmergencyServices;
+    GnssConfigSuplModeMask suplModeMask; //bitwise OR of GnssConfigSuplModeBits
+} GnssConfig;
+
+typedef struct {
+    size_t size;                        // set to sizeof
+    bool                                mValid;
+    Location                            mLocation;
+    double                              verticalAccuracyMeters;
+    double                              speedAccuracyMetersPerSecond;
+    double                              bearingAccuracyDegrees;
+} GnssDebugLocation;
+
+typedef struct {
+    size_t size;                        // set to sizeof
+    bool                                mValid;
+    int64_t                             timeEstimate;
+    float                               timeUncertaintyNs;
+    float                               frequencyUncertaintyNsPerSec;
+} GnssDebugTime;
+
+typedef struct {
+    size_t size;                        // set to sizeof
+    uint32_t                            svid;
+    GnssSvType                          constellation;
+    GnssEphemerisType                   mEphemerisType;
+    GnssEphemerisSource                 mEphemerisSource;
+    GnssEphemerisHealth                 mEphemerisHealth;
+    float                               ephemerisAgeSeconds;
+    bool                                serverPredictionIsAvailable;
+    float                               serverPredictionAgeSeconds;
+} GnssDebugSatelliteInfo;
+
+typedef struct {
+    size_t size;                        // set to sizeof
+    GnssDebugLocation                   mLocation;
+    GnssDebugTime                       mTime;
+    std::vector<GnssDebugSatelliteInfo> mSatelliteInfo;
+} GnssDebugReport;
+
+/* Provides the capabilities of the system
+   capabilities callback is called once soon after createInstance is called */
+typedef std::function<void(
+    LocationCapabilitiesMask capabilitiesMask // bitwise OR of LocationCapabilitiesBits
+)> capabilitiesCallback;
+
+/* Used by tracking, batching, and miscellanous APIs
+   responseCallback is called for every Tracking, Batching API, and Miscellanous API */
+typedef std::function<void(
+    LocationError err, // if not SUCCESS, then id is not valid
+    uint32_t id        // id to be associated to the request
+)> responseCallback;
+
+/* Used by APIs that gets more than one LocationError in it's response
+   collectiveResponseCallback is called for every geofence API call.
+   ids array and LocationError array are only valid until collectiveResponseCallback returns. */
+typedef std::function<void(
+    size_t count, // number of locations in arrays
+    LocationError* errs, // array of LocationError associated to the request
+    uint32_t* ids // array of ids to be associated to the request
+)> collectiveResponseCallback;
+
+/* Used for startTracking API, optional can be NULL
+   trackingCallback is called when delivering a location in a tracking session
+   broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    Location location
+)> trackingCallback;
+
+/* Used for startBatching API, optional can be NULL
+   batchingCallback is called when delivering locations in a batching session.
+   broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    size_t count,      // number of locations in array
+    Location* location  // array of locations
+)> batchingCallback;
+
+/* Gives GNSS Location information, optional can be NULL
+    gnssLocationInfoCallback is called only during a tracking session
+    broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    GnssLocationInfoNotification gnssLocationInfoNotification
+)> gnssLocationInfoCallback;
+
+/* Used for addGeofences API, optional can be NULL
+   geofenceBreachCallback is called when any number of geofences have a state change */
+typedef std::function<void(
+    GeofenceBreachNotification geofenceBreachNotification
+)> geofenceBreachCallback;
+
+/* Used for addGeofences API, optional can be NULL
+       geofenceStatusCallback is called when any number of geofences have a status change */
+typedef std::function<void(
+    GeofenceStatusNotification geofenceStatusNotification
+)> geofenceStatusCallback;
+
+/* Network Initiated request, optional can be NULL
+   This callback should be responded to by calling gnssNiResponse */
+typedef std::function<void(
+    uint32_t id, // id that should be used to respond by calling gnssNiResponse
+    GnssNiNotification gnssNiNotification
+)> gnssNiCallback;
+
+/* Gives GNSS SV information, optional can be NULL
+    gnssSvCallback is called only during a tracking session
+    broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    GnssSvNotification gnssSvNotification
+)> gnssSvCallback;
+
+/* Gives GNSS NMEA data, optional can be NULL
+    gnssNmeaCallback is called only during a tracking session
+    broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    GnssNmeaNotification gnssNmeaNotification
+)> gnssNmeaCallback;
+
+/* Gives GNSS Measurements information, optional can be NULL
+    gnssMeasurementsCallback is called only during a tracking session
+    broadcasted to all clients, no matter if a session has started by client */
+typedef std::function<void(
+    GnssMeasurementsNotification gnssMeasurementsNotification
+)> gnssMeasurementsCallback;
+
+typedef struct {
+    size_t size; // set to sizeof(LocationCallbacks)
+    capabilitiesCallback capabilitiesCb;             // mandatory
+    responseCallback responseCb;                     // mandatory
+    collectiveResponseCallback collectiveResponseCb; // mandatory
+    trackingCallback trackingCb;                     // optional
+    batchingCallback batchingCb;                     // optional
+    geofenceBreachCallback geofenceBreachCb;         // optional
+    geofenceStatusCallback geofenceStatusCb;         // optional
+    gnssLocationInfoCallback gnssLocationInfoCb;     // optional
+    gnssNiCallback gnssNiCb;                         // optional
+    gnssSvCallback gnssSvCb;                         // optional
+    gnssNmeaCallback gnssNmeaCb;                     // optional
+    gnssMeasurementsCallback gnssMeasurementsCb;     // optional
+} LocationCallbacks;
+
+class LocationAPI
+{
+private:
+    LocationAPI();
+    ~LocationAPI();
+
+public:
+    /* creates an instance to LocationAPI object.
+       Will return NULL if mandatory parameters are invalid or if the maximum number
+       of instances have been reached */
+    static LocationAPI* createInstance(LocationCallbacks&);
+
+    /* destroy/cleans up the instance, which should be called when LocationAPI object is
+       no longer needed. LocationAPI* returned from createInstance will no longer valid
+       after destroy is called */
+    void destroy();
+
+    /* updates/changes the callbacks that will be called.
+        mandatory callbacks must be present for callbacks to be successfully updated
+        no return value */
+    void updateCallbacks(LocationCallbacks&);
+
+    /* ================================== TRACKING ================================== */
+
+    /* startTracking starts a tracking session, which returns a session id that will be
+       used by the other tracking APIs and also in the responseCallback to match command
+       with response. locations are reported on the trackingCallback passed in createInstance
+       periodically according to LocationOptions.
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if session was successfully started
+                LOCATION_ERROR_ALREADY_STARTED if a startTracking session is already in progress
+                LOCATION_ERROR_CALLBACK_MISSING if no trackingCallback was passed in createInstance
+                LOCATION_ERROR_INVALID_PARAMETER if LocationOptions parameter is invalid */
+    uint32_t startTracking(LocationOptions&); // returns session id
+
+    /* stopTracking stops a tracking session associated with id parameter.
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a tracking session */
+    void stopTracking(uint32_t id);
+
+    /* updateTrackingOptions changes the LocationOptions of a tracking session associated with id
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_INVALID_PARAMETER if LocationOptions parameters are invalid
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a tracking session */
+    void updateTrackingOptions(uint32_t id, LocationOptions&);
+
+    /* ================================== BATCHING ================================== */
+
+    /* startBatching starts a batching session, which returns a session id that will be
+       used by the other batching APIs and also in the responseCallback to match command
+       with response. locations are reported on the batchingCallback passed in createInstance
+       periodically according to LocationOptions. A batching session starts tracking on
+       the low power processor and delivers them in batches by the batchingCallback when
+       the batch is full or when getBatchedLocations is called. This allows for the processor
+       that calls this API to sleep when the low power processor can batch locations in the
+       backgroup and wake up the processor calling the API only when the batch is full, thus
+       saving power
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if session was successful
+                LOCATION_ERROR_ALREADY_STARTED if a startBatching session is already in progress
+                LOCATION_ERROR_CALLBACK_MISSING if no batchingCallback was passed in createInstance
+                LOCATION_ERROR_INVALID_PARAMETER if a parameter is invalid
+                LOCATION_ERROR_NOT_SUPPORTED if batching is not supported */
+    uint32_t startBatching(LocationOptions&); // returns session id
+
+    /* stopBatching stops a batching session associated with id parameter.
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with batching session */
+    void stopBatching(uint32_t id);
+
+    /* updateBatchingOptions changes the LocationOptions of a batching session associated with id
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_INVALID_PARAMETER if LocationOptions parameters are invalid
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a batching session */
+    void updateBatchingOptions(uint32_t id, LocationOptions&);
+
+    /* getBatchedLocations gets a number of locations that are currently stored/batched
+       on the low power processor, delivered by the batchingCallback passed in createInstance.
+       Location are then deleted from the batch stored on the low power processor.
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful, will be followed by batchingCallback call
+                LOCATION_ERROR_CALLBACK_MISSING if no batchingCallback was passed in createInstance
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a batching session */
+    void getBatchedLocations(uint32_t id, size_t count);
+
+    /* ================================== GEOFENCE ================================== */
+
+    /* addGeofences adds any number of geofences and returns an array of geofence ids that
+       will be used by the other geofence APIs and also in the collectiveResponseCallback to
+       match command with response. The geofenceBreachCallback will deliver the status of each
+       geofence according to the GeofenceOption for each. The geofence id array returned will
+       be valid until the collectiveResponseCallback is called and has returned.
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if session was successful
+                LOCATION_ERROR_CALLBACK_MISSING if no geofenceBreachCallback
+                LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid
+                LOCATION_ERROR_NOT_SUPPORTED if geofence is not supported */
+    uint32_t* addGeofences(size_t count, GeofenceOption*, GeofenceInfo*); // returns id array
+
+    /* removeGeofences removes any number of geofences. Caller should delete ids array after
+       removeGeofences returneds.
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */
+    void removeGeofences(size_t count, uint32_t* ids);
+
+    /* modifyGeofences modifies any number of geofences. Caller should delete ids array after
+       modifyGeofences returns.
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session
+                LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid */
+    void modifyGeofences(size_t count, uint32_t* ids, GeofenceOption* options);
+
+    /* pauseGeofences pauses any number of geofences, which is similar to removeGeofences,
+       only that they can be resumed at any time. Caller should delete ids array after
+       pauseGeofences returns.
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */
+    void pauseGeofences(size_t count, uint32_t* ids);
+
+    /* resumeGeofences resumes any number of geofences that are currently paused. Caller should
+       delete ids array after resumeGeofences returns.
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */
+    void resumeGeofences(size_t count, uint32_t* ids);
+
+    /* ================================== GNSS ====================================== */
+
+     /* gnssNiResponse is called in response to a gnssNiCallback.
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if session was successful
+                LOCATION_ERROR_INVALID_PARAMETER if any parameters in GnssNiResponse are invalid
+                LOCATION_ERROR_ID_UNKNOWN if id does not match a gnssNiCallback */
+    void gnssNiResponse(uint32_t id, GnssNiResponse response);
+};
+
+typedef struct {
+    size_t size; // set to sizeof(LocationControlCallbacks)
+    responseCallback responseCb;                     // mandatory
+    collectiveResponseCallback collectiveResponseCb; // mandatory
+} LocationControlCallbacks;
+
+class LocationControlAPI
+{
+private:
+    LocationControlAPI();
+    ~LocationControlAPI();
+
+public:
+    /* creates an instance to LocationControlAPI object.
+       Will return NULL if mandatory parameters are invalid or if the maximum number
+       of instances have been reached. Only once instance allowed */
+    static LocationControlAPI* createInstance(LocationControlCallbacks&);
+
+    /* destroy/cleans up the instance, which should be called when LocationControlAPI object is
+       no longer needed. LocationControlAPI* returned from createInstance will no longer valid
+       after destroy is called */
+    void destroy();
+
+    /* enable will enable specific location technology to be used for calculation locations and
+       will effectively start a control session if call is successful, which returns a session id
+       that will be returned in responseCallback to match command with response. The session id is
+       also needed to call the disable command.
+       This effect is global for all clients of LocationAPI
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ALREADY_STARTED if an enable was already called for this techType
+                LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid
+                LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */
+    uint32_t enable(LocationTechnologyType techType);
+
+    /* disable will disable specific location technology to be used for calculation locations and
+       effectively ends the control session if call is successful.
+       id parameter is the session id that was returned in enable responseCallback for techType.
+       The session id is no longer valid after disable's responseCallback returns success.
+       This effect is global for all clients of LocationAPI
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_ID_UNKNOWN if id was not returned from responseCallback from enable
+                LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */
+    void disable(uint32_t id);
+
+    /* gnssUpdateConfig updates the gnss specific configuration, which returns a session id array
+       with an id for each of the bits set in GnssConfig.flags, order from low bits to high bits.
+       The response for each config that is set will be returned in collectiveResponseCallback.
+       The session id array returned will be valid until the collectiveResponseCallback is called
+       and has returned. This effect is global for all clients of LocationAPI
+        collectiveResponseCallback returns:
+                LOCATION_ERROR_SUCCESS if session was successful
+                LOCATION_ERROR_INVALID_PARAMETER if any other parameters are invalid
+                LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */
+    uint32_t* gnssUpdateConfig(GnssConfig config);
+
+    /* delete specific gnss aiding data for testing, which returns a session id
+       that will be returned in responseCallback to match command with response.
+       Only allowed in userdebug builds. This effect is global for all clients of LocationAPI
+        responseCallback returns:
+                LOCATION_ERROR_SUCCESS if successful
+                LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid
+                LOCATION_ERROR_NOT_SUPPORTED if build is not userdebug */
+    uint32_t gnssDeleteAidingData(GnssAidingData& data);
+};
+
+#endif /* LOCATION_H */
diff --git a/sdm845/location/LocationAPIClientBase.cpp b/sdm845/location/LocationAPIClientBase.cpp
new file mode 100644
index 0000000..5078313
--- /dev/null
+++ b/sdm845/location/LocationAPIClientBase.cpp
@@ -0,0 +1,772 @@
+/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_APIClientBase"
+
+#include <log_util.h>
+#include <loc_cfg.h>
+#include "LocationAPIClientBase.h"
+
+#define BATCHING_CONF_FILE "/etc/flp.conf"
+#define GEOFENCE_SESSION_ID -1
+
+LocationAPIClientBase::LocationAPIClientBase() :
+    mTrackingCallback(nullptr),
+    mBatchingCallback(nullptr),
+    mGeofenceBreachCallback(nullptr),
+    mLocationAPI(nullptr),
+    mLocationControlAPI(nullptr),
+    mBatchSize(-1)
+{
+
+    // use recursive mutex, in case callback come from the same thread
+    pthread_mutexattr_t attr;
+    pthread_mutexattr_init(&attr);
+    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+    pthread_mutex_init(&mMutex, &attr);
+
+    for (int i = 0; i < REQUEST_MAX; i++) {
+        mRequestQueues[i] = nullptr;
+    }
+
+    memset(&mConfig, 0, sizeof(GnssConfig));
+}
+
+void LocationAPIClientBase::locAPISetCallbacks(LocationCallbacks& locationCallbacks)
+{
+    if (locationCallbacks.geofenceBreachCb != nullptr) {
+        mGeofenceBreachCallback = locationCallbacks.geofenceBreachCb;
+        locationCallbacks.geofenceBreachCb =
+            [this](GeofenceBreachNotification geofenceBreachNotification) {
+                beforeGeofenceBreachCb(geofenceBreachNotification);
+            };
+    }
+
+    locationCallbacks.capabilitiesCb =
+        [this](LocationCapabilitiesMask capabilitiesMask) {
+            onCapabilitiesCb(capabilitiesMask);
+        };
+    locationCallbacks.responseCb = [this](LocationError error, uint32_t id) {
+        onResponseCb(error, id);
+    };
+    locationCallbacks.collectiveResponseCb =
+        [this](size_t count, LocationError* errors, uint32_t* ids) {
+            onCollectiveResponseCb(count, errors, ids);
+        };
+
+    if (mLocationAPI == nullptr ) {
+        mLocationAPI = LocationAPI::createInstance(locationCallbacks);
+    } else {
+        mLocationAPI->updateCallbacks(locationCallbacks);
+    }
+
+    if (mLocationControlAPI == nullptr) {
+        LocationControlCallbacks locationControlCallbacks;
+        locationControlCallbacks.size = sizeof(LocationControlCallbacks);
+
+        locationControlCallbacks.responseCb =
+            [this](LocationError error, uint32_t id) {
+                onCtrlResponseCb(error, id);
+            };
+        locationControlCallbacks.collectiveResponseCb =
+            [this](size_t count, LocationError* errors, uint32_t* ids) {
+                onCtrlCollectiveResponseCb(count, errors, ids);
+            };
+
+        mLocationControlAPI = LocationControlAPI::createInstance(locationControlCallbacks);
+    }
+}
+
+LocationAPIClientBase::~LocationAPIClientBase()
+{
+    if (mLocationAPI) {
+        mLocationAPI->destroy();
+        mLocationAPI = nullptr;
+    }
+    if (mLocationControlAPI) {
+        mLocationControlAPI->destroy();
+        mLocationControlAPI = nullptr;
+    }
+
+    pthread_mutex_lock(&mMutex);
+    for (int i = 0; i < REQUEST_MAX; i++) {
+        if (mRequestQueues[i]) {
+            delete mRequestQueues[i];
+            mRequestQueues[i] = nullptr;
+        }
+    }
+    pthread_mutex_unlock(&mMutex);
+
+    pthread_mutex_destroy(&mMutex);
+}
+
+uint32_t LocationAPIClientBase::locAPIStartTracking(LocationOptions& options)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+        if (requests) {
+            delete requests;
+        }
+        uint32_t session = mLocationAPI->startTracking(options);
+        LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, session);
+        // onResponseCb might be called from other thread immediately after
+        // startTracking returns, so we are not going to unlock mutex
+        // until StartTrackingRequest is pushed into mRequestQueues[REQUEST_TRACKING]
+        requests = new RequestQueue(session);
+        requests->push(new StartTrackingRequest(*this));
+        mRequestQueues[REQUEST_TRACKING] = requests;
+        pthread_mutex_unlock(&mMutex);
+
+        retVal = LOCATION_ERROR_SUCCESS;
+    }
+
+    return retVal;
+}
+
+void LocationAPIClientBase::locAPIStopTracking()
+{
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        uint32_t session = -1;
+        RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+        if (requests) {
+            session = requests->getSession();
+            requests->push(new StopTrackingRequest(*this));
+            mLocationAPI->stopTracking(session);
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+}
+
+void LocationAPIClientBase::locAPIUpdateTrackingOptions(LocationOptions& options)
+{
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        uint32_t session = -1;
+        RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+        if (requests) {
+            session = requests->getSession();
+            requests->push(new UpdateTrackingOptionsRequest(*this));
+            mLocationAPI->updateTrackingOptions(session, options);
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+}
+
+int32_t LocationAPIClientBase::locAPIGetBatchSize()
+{
+    if (mBatchSize == -1) {
+        const loc_param_s_type batching_conf_param_table[] =
+        {
+            {"BATCH_SIZE", &mBatchSize, nullptr, 'n'},
+        };
+        UTIL_READ_CONF(BATCHING_CONF_FILE, batching_conf_param_table);
+        if (mBatchSize < 0) {
+            // set mBatchSize to 0 if we got an illegal value from config file
+            mBatchSize = 0;
+        }
+    }
+    return mBatchSize;
+}
+
+
+uint32_t LocationAPIClientBase::locAPIStartSession(uint32_t id, uint32_t sessionMode,
+        LocationOptions& options)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+
+        if (mSessionMap.find(id) != mSessionMap.end()) {
+            LOC_LOGE("%s:%d] session %d has already started.", __FUNCTION__, __LINE__, id);
+            retVal = LOCATION_ERROR_ALREADY_STARTED;
+        } else {
+            uint32_t trackingSession = 0;
+            uint32_t batchingSession = 0;
+
+            if (sessionMode == SESSION_MODE_ON_FIX) {
+                RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+                if (requests) {
+                    delete requests;
+                }
+                trackingSession = mLocationAPI->startTracking(options);
+                LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, trackingSession);
+                requests = new RequestQueue(trackingSession);
+                requests->push(new StartTrackingRequest(*this));
+                mRequestQueues[REQUEST_TRACKING] = requests;
+            } else if (sessionMode == SESSION_MODE_ON_FULL) {
+                RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+                if (requests) {
+                    delete requests;
+                }
+                batchingSession = mLocationAPI->startBatching(options);
+                LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, batchingSession);
+                requests = new RequestQueue(batchingSession);
+                requests->push(new StartBatchingRequest(*this));
+                mRequestQueues[REQUEST_BATCHING] = requests;
+            }
+
+            SessionEntity entity;
+            entity.id = id;
+            entity.trackingSession = trackingSession;
+            entity.batchingSession = batchingSession;
+            entity.sessionMode = sessionMode;
+            mSessionMap[id] = entity;
+
+            retVal = LOCATION_ERROR_SUCCESS;
+        }
+
+        pthread_mutex_unlock(&mMutex);
+    }
+
+    return retVal;
+}
+
+uint32_t LocationAPIClientBase::locAPIStopSession(uint32_t id)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+
+        if (mSessionMap.find(id) != mSessionMap.end()) {
+            SessionEntity entity = mSessionMap[id];
+
+            uint32_t trackingSession = entity.trackingSession;
+            uint32_t batchingSession = entity.batchingSession;
+            uint32_t sMode = entity.sessionMode;
+
+            mSessionMap.erase(id);
+
+            if (sMode == SESSION_MODE_ON_FIX) {
+                RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+                if (requests) {
+                    requests->push(new StopTrackingRequest(*this));
+                    mLocationAPI->stopTracking(trackingSession);
+                }
+            } else if (sMode == SESSION_MODE_ON_FULL) {
+                RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+                if (requests) {
+                    requests->push(new StopBatchingRequest(*this));
+                    mLocationAPI->stopBatching(batchingSession);
+                }
+            }
+
+            retVal = LOCATION_ERROR_SUCCESS;
+        } else {
+            retVal = LOCATION_ERROR_ID_UNKNOWN;
+            LOC_LOGE("%s:%d] session %d is not exist.", __FUNCTION__, __LINE__, id);
+        }
+
+        pthread_mutex_unlock(&mMutex);
+    }
+    return retVal;
+}
+
+uint32_t LocationAPIClientBase::locAPIUpdateSessionOptions(uint32_t id, uint32_t sessionMode,
+        LocationOptions& options)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+
+        if (mSessionMap.find(id) != mSessionMap.end()) {
+            SessionEntity& entity = mSessionMap[id];
+
+            uint32_t trackingSession = entity.trackingSession;
+            uint32_t batchingSession = entity.batchingSession;
+            uint32_t sMode = entity.sessionMode;
+
+            if (sessionMode == SESSION_MODE_ON_FIX) {
+                if (sMode == SESSION_MODE_ON_FIX) {
+                    RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+                    if (requests) {
+                        requests->push(new UpdateTrackingOptionsRequest(*this));
+                        mLocationAPI->updateTrackingOptions(trackingSession, options);
+                    }
+                } else if (sMode == SESSION_MODE_ON_FULL) {
+                    // stop batching
+                    {
+                        RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+                        if (requests) {
+                            requests->push(new StopBatchingRequest(*this));
+                            mLocationAPI->stopBatching(batchingSession);
+                            batchingSession = 0;
+                        }
+                    }
+                    // start tracking
+                    {
+                        RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+                        if (requests) {
+                            delete requests;
+                        }
+                        trackingSession = mLocationAPI->startTracking(options);
+                        LOC_LOGI("%s:%d] start new session: %d",
+                                __FUNCTION__, __LINE__, trackingSession);
+                        requests = new RequestQueue(trackingSession);
+                        requests->push(new StartTrackingRequest(*this));
+                        mRequestQueues[REQUEST_TRACKING] = requests;
+                    }
+                }
+            } else if (sessionMode == SESSION_MODE_ON_FULL) {
+                if (sMode == SESSION_MODE_ON_FIX) {
+                    // stop tracking
+                    {
+                        RequestQueue* requests = mRequestQueues[REQUEST_TRACKING];
+                        if (requests) {
+                            requests->push(new StopTrackingRequest(*this));
+                            mLocationAPI->stopTracking(trackingSession);
+                            trackingSession = 0;
+                        }
+                    }
+                    // start batching
+                    {
+                        RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+                        if (requests) {
+                            delete requests;
+                        }
+                        batchingSession = mLocationAPI->startBatching(options);
+                        LOC_LOGI("%s:%d] start new session: %d",
+                                __FUNCTION__, __LINE__, batchingSession);
+                        requests = new RequestQueue(batchingSession);
+                        requests->push(new StartBatchingRequest(*this));
+                        mRequestQueues[REQUEST_BATCHING] = requests;
+                    }
+                } else if (sMode == SESSION_MODE_ON_FULL) {
+                    RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+                    requests = mRequestQueues[REQUEST_BATCHING];
+                    if (requests) {
+                        requests->push(new UpdateBatchingOptionsRequest(*this));
+                        mLocationAPI->updateBatchingOptions(batchingSession, options);
+                    }
+                }
+            }
+
+            entity.trackingSession = trackingSession;
+            entity.batchingSession = batchingSession;
+            entity.sessionMode = sessionMode;
+
+            retVal = LOCATION_ERROR_SUCCESS;
+        } else {
+            retVal = LOCATION_ERROR_ID_UNKNOWN;
+            LOC_LOGE("%s:%d] session %d is not exist.", __FUNCTION__, __LINE__, id);
+        }
+
+        pthread_mutex_unlock(&mMutex);
+    }
+    return retVal;
+}
+
+void LocationAPIClientBase::locAPIGetBatchedLocations(size_t count)
+{
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        uint32_t session = -1;
+        RequestQueue* requests = mRequestQueues[REQUEST_BATCHING];
+        if (requests) {
+            session = requests->getSession();
+            requests->push(new GetBatchedLocationsRequest(*this));
+            mLocationAPI->getBatchedLocations(session, count);
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+}
+
+uint32_t LocationAPIClientBase::locAPIAddGeofences(
+        size_t count, uint32_t* ids, GeofenceOption* options, GeofenceInfo* data)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (!requests) {
+            // Create a new RequestQueue for Geofenceing if we've not had one.
+            // The RequestQueue will be released when LocationAPIClientBase is released.
+            requests = new RequestQueue(GEOFENCE_SESSION_ID);
+            mRequestQueues[REQUEST_GEOFENCE] = requests;
+        }
+        uint32_t* sessions = mLocationAPI->addGeofences(count, options, data);
+        if (sessions) {
+            LOC_LOGI("%s:%d] start new sessions: %p", __FUNCTION__, __LINE__, sessions);
+            requests->push(new AddGeofencesRequest(*this));
+
+            for (size_t i = 0; i < count; i++) {
+                mGeofenceBiDict.set(ids[i], sessions[i], options[i].breachTypeMask);
+            }
+            retVal = LOCATION_ERROR_SUCCESS;
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+
+    return retVal;
+}
+
+void LocationAPIClientBase::locAPIRemoveGeofences(size_t count, uint32_t* ids)
+{
+    if (mLocationAPI) {
+        uint32_t* sessions = (uint32_t*)malloc(sizeof(uint32_t) * count);
+
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (requests) {
+            for (size_t i = 0; i < count; i++) {
+                sessions[i] = mGeofenceBiDict.getSession(ids[i]);
+            }
+            requests->push(new RemoveGeofencesRequest(*this));
+            mLocationAPI->removeGeofences(count, sessions);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        free(sessions);
+    }
+}
+
+void LocationAPIClientBase::locAPIModifyGeofences(
+        size_t count, uint32_t* ids, GeofenceOption* options)
+{
+    if (mLocationAPI) {
+        uint32_t* sessions = (uint32_t*)malloc(sizeof(uint32_t) * count);
+
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (requests) {
+            for (size_t i = 0; i < count; i++) {
+                sessions[i] = mGeofenceBiDict.getSession(ids[i]);
+                mGeofenceBiDict.set(ids[i], sessions[i], options[i].breachTypeMask);
+            }
+            requests->push(new ModifyGeofencesRequest(*this));
+            mLocationAPI->modifyGeofences(count, sessions, options);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        free(sessions);
+    }
+}
+
+void LocationAPIClientBase::locAPIPauseGeofences(size_t count, uint32_t* ids)
+{
+    if (mLocationAPI) {
+        uint32_t* sessions = (uint32_t*)malloc(sizeof(uint32_t) * count);
+
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (requests) {
+            for (size_t i = 0; i < count; i++) {
+                sessions[i] = mGeofenceBiDict.getSession(ids[i]);
+            }
+            requests->push(new PauseGeofencesRequest(*this));
+            mLocationAPI->pauseGeofences(count, sessions);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        free(sessions);
+    }
+}
+
+void LocationAPIClientBase::locAPIResumeGeofences(
+        size_t count, uint32_t* ids, GeofenceBreachTypeMask* mask)
+{
+    if (mLocationAPI) {
+        uint32_t* sessions = (uint32_t*)malloc(sizeof(uint32_t) * count);
+
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (requests) {
+            for (size_t i = 0; i < count; i++) {
+                sessions[i] = mGeofenceBiDict.getSession(ids[i]);
+                if (mask) {
+                    mGeofenceBiDict.set(ids[i], sessions[i], mask[i]);
+                }
+            }
+            requests->push(new ResumeGeofencesRequest(*this));
+            mLocationAPI->resumeGeofences(count, sessions);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        free(sessions);
+    }
+}
+
+void LocationAPIClientBase::locAPIRemoveAllGeofences()
+{
+    if (mLocationAPI) {
+        std::vector<uint32_t> sessionsVec = mGeofenceBiDict.getAllSessions();
+        size_t count = sessionsVec.size();
+        uint32_t* sessions = (uint32_t*)malloc(sizeof(uint32_t) * count);
+
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_GEOFENCE];
+        if (requests) {
+            for (size_t i = 0; i < count; i++) {
+                sessions[i] = sessionsVec[i];
+            }
+            requests->push(new RemoveGeofencesRequest(*this));
+            mLocationAPI->removeGeofences(count, sessions);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        free(sessions);
+    }
+}
+
+void LocationAPIClientBase::locAPIGnssNiResponse(uint32_t id, GnssNiResponse response)
+{
+    uint32_t session = 0;
+    if (mLocationAPI) {
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_NIRESPONSE];
+        if (requests) {
+            delete requests;
+        }
+        uint32_t session = id;
+        mLocationAPI->gnssNiResponse(id, response);
+        LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, session);
+        requests = new RequestQueue(session);
+        requests->push(new GnssNiResponseRequest(*this));
+        mRequestQueues[REQUEST_NIRESPONSE] = requests;
+        pthread_mutex_unlock(&mMutex);
+    }
+}
+
+uint32_t LocationAPIClientBase::locAPIGnssDeleteAidingData(GnssAidingData& data)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationControlAPI) {
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_DELETEAIDINGDATA];
+        if (requests) {
+            delete requests;
+        }
+        uint32_t session = mLocationControlAPI->gnssDeleteAidingData(data);
+        LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, session);
+        requests = new RequestQueue(session);
+        requests->push(new GnssDeleteAidingDataRequest(*this));
+        mRequestQueues[REQUEST_DELETEAIDINGDATA] = requests;
+        pthread_mutex_unlock(&mMutex);
+
+        retVal = LOCATION_ERROR_SUCCESS;
+    }
+
+    return retVal;
+}
+
+uint32_t LocationAPIClientBase::locAPIEnable(LocationTechnologyType techType)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (mLocationControlAPI) {
+        pthread_mutex_lock(&mMutex);
+        RequestQueue* requests = mRequestQueues[REQUEST_CONTROL];
+        if (requests) {
+            delete requests;
+        }
+        uint32_t session = mLocationControlAPI->enable(techType);
+        LOC_LOGI("%s:%d] start new session: %d", __FUNCTION__, __LINE__, session);
+        requests = new RequestQueue(session);
+        requests->push(new EnableRequest(*this));
+        mRequestQueues[REQUEST_CONTROL] = requests;
+        pthread_mutex_unlock(&mMutex);
+
+        retVal = LOCATION_ERROR_SUCCESS;
+    }
+
+    return retVal;
+}
+
+void LocationAPIClientBase::locAPIDisable()
+{
+    if (mLocationControlAPI) {
+        pthread_mutex_lock(&mMutex);
+        uint32_t session = -1;
+        RequestQueue* requests = mRequestQueues[REQUEST_CONTROL];
+        if (requests) {
+            session = requests->getSession();
+            requests->push(new DisableRequest(*this));
+            mLocationControlAPI->disable(session);
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+}
+
+uint32_t LocationAPIClientBase::locAPIGnssUpdateConfig(GnssConfig config)
+{
+    uint32_t retVal = LOCATION_ERROR_GENERAL_FAILURE;
+    if (memcmp(&mConfig, &config, sizeof(GnssConfig)) == 0) {
+        LOC_LOGE("%s:%d] GnssConfig is identical to previous call", __FUNCTION__, __LINE__);
+        return retVal;
+    }
+
+    if (mLocationControlAPI) {
+        pthread_mutex_lock(&mMutex);
+
+        memcpy(&mConfig, &config, sizeof(GnssConfig));
+
+        uint32_t session = -1;
+        RequestQueue* requests = mRequestQueues[REQUEST_CONTROL];
+        if (requests) {
+            session = requests->getSession();
+            requests->push(new GnssUpdateConfigRequest(*this));
+            uint32_t* idArray = mLocationControlAPI->gnssUpdateConfig(config);
+            LOC_LOGV("%s:%d] gnssUpdateConfig return array: %p", __FUNCTION__, __LINE__, idArray);
+        }
+        pthread_mutex_unlock(&mMutex);
+
+        retVal = LOCATION_ERROR_SUCCESS;
+    }
+    return retVal;
+}
+
+void LocationAPIClientBase::beforeGeofenceBreachCb(
+        GeofenceBreachNotification geofenceBreachNotification)
+{
+    if (mGeofenceBreachCallback == nullptr)
+        return;
+    uint32_t* ids = (uint32_t*)malloc(sizeof(uint32_t) * geofenceBreachNotification.count);
+    uint32_t* backup = geofenceBreachNotification.ids;
+    size_t n = geofenceBreachNotification.count;
+
+    size_t count = 0;
+    for (size_t i = 0; i < n; i++) {
+        uint32_t id = mGeofenceBiDict.getId(geofenceBreachNotification.ids[i]);
+        GeofenceBreachTypeMask type = mGeofenceBiDict.getType(geofenceBreachNotification.ids[i]);
+        if ((geofenceBreachNotification.type == GEOFENCE_BREACH_ENTER &&
+            (type & GEOFENCE_BREACH_ENTER_BIT)) ||
+            (geofenceBreachNotification.type == GEOFENCE_BREACH_EXIT &&
+            (type & GEOFENCE_BREACH_EXIT_BIT))
+           ) {
+            ids[count] = id;
+            count++;
+        }
+    }
+    geofenceBreachNotification.count = count;
+    geofenceBreachNotification.ids = ids;
+    mGeofenceBreachCallback(geofenceBreachNotification);
+
+    // restore ids
+    geofenceBreachNotification.ids = backup;
+    geofenceBreachNotification.count = n;
+    free(ids);
+}
+
+void LocationAPIClientBase::onResponseCb(LocationError error, uint32_t id)
+{
+    if (error != LOCATION_ERROR_SUCCESS) {
+        LOC_LOGE("%s:%d] ERROR: %d ID: %d", __FUNCTION__, __LINE__, error, id);
+    } else {
+        LOC_LOGV("%s:%d] error: %d id: %d", __FUNCTION__, __LINE__, error, id);
+    }
+    LocationAPIRequest* request = getRequestBySession(id);
+    if (request) {
+        request->onResponse(error);
+        delete request;
+    }
+}
+
+void LocationAPIClientBase::onCollectiveResponseCb(
+        size_t count, LocationError* errors, uint32_t* ids)
+{
+    for (size_t i = 0; i < count; i++) {
+        if (errors[i] != LOCATION_ERROR_SUCCESS) {
+            LOC_LOGE("%s:%d] ERROR: %d ID: %d", __FUNCTION__, __LINE__, errors[i], ids[i]);
+        } else {
+            LOC_LOGV("%s:%d] error: %d id: %d", __FUNCTION__, __LINE__, errors[i], ids[i]);
+        }
+    }
+    LocationAPIRequest* request = nullptr;
+    if (count > 0 && ids)
+        request = getRequestBySession(ids[0]);
+    if (!request)
+        request = getGeofencesRequest();
+    if (request) {
+        request->onCollectiveResponse(count, errors, ids);
+        delete request;
+    }
+}
+
+void LocationAPIClientBase::onCtrlResponseCb(LocationError error, uint32_t id)
+{
+    if (error != LOCATION_ERROR_SUCCESS) {
+        LOC_LOGE("%s:%d] ERROR: %d ID: %d", __FUNCTION__, __LINE__, error, id);
+    } else {
+        LOC_LOGV("%s:%d] error: %d id: %d", __FUNCTION__, __LINE__, error, id);
+    }
+    LocationAPIRequest* request = getRequestBySession(id);
+    if (request) {
+        request->onResponse(error);
+        delete request;
+    }
+}
+
+void LocationAPIClientBase::onCtrlCollectiveResponseCb(
+        size_t count, LocationError* errors, uint32_t* ids)
+{
+    for (size_t i = 0; i < count; i++) {
+        if (errors[i] != LOCATION_ERROR_SUCCESS) {
+            LOC_LOGE("%s:%d] ERROR: %d ID: %d", __FUNCTION__, __LINE__, errors[i], ids[i]);
+        } else {
+            LOC_LOGV("%s:%d] error: %d id: %d", __FUNCTION__, __LINE__, errors[i], ids[i]);
+        }
+    }
+    LocationAPIRequest* request = nullptr;
+    if (count > 0 && ids)
+        request = getRequestBySession(ids[0]);
+    if (request) {
+        request->onCollectiveResponse(count, errors, ids);
+        delete request;
+    }
+}
+
+LocationAPIClientBase::LocationAPIRequest*
+LocationAPIClientBase::getRequestBySession(uint32_t session)
+{
+    pthread_mutex_lock(&mMutex);
+    LocationAPIRequest* request = nullptr;
+    for (int i = 0; i < REQUEST_MAX; i++) {
+        if (i != REQUEST_GEOFENCE &&
+                mRequestQueues[i] &&
+                mRequestQueues[i]->getSession() == session) {
+            request = mRequestQueues[i]->pop();
+            break;
+        }
+    }
+    pthread_mutex_unlock(&mMutex);
+    return request;
+}
+
+LocationAPIClientBase::LocationAPIRequest*
+LocationAPIClientBase::getGeofencesRequest()
+{
+    pthread_mutex_lock(&mMutex);
+    LocationAPIRequest* request = nullptr;
+    if (mRequestQueues[REQUEST_GEOFENCE]) {
+        request = mRequestQueues[REQUEST_GEOFENCE]->pop();
+    }
+    pthread_mutex_unlock(&mMutex);
+    return request;
+}
diff --git a/sdm845/location/LocationAPIClientBase.h b/sdm845/location/LocationAPIClientBase.h
new file mode 100644
index 0000000..8bbaa3d
--- /dev/null
+++ b/sdm845/location/LocationAPIClientBase.h
@@ -0,0 +1,457 @@
+/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOCATION_API_CLINET_BASE_H
+#define LOCATION_API_CLINET_BASE_H
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <queue>
+#include <map>
+
+#include "LocationAPI.h"
+
+enum SESSION_MODE {
+    SESSION_MODE_NONE = 0,
+    SESSION_MODE_ON_FULL,
+    SESSION_MODE_ON_FIX,
+};
+
+enum REQUEST_TYPE {
+    REQUEST_TRACKING = 0,
+    REQUEST_BATCHING,
+    REQUEST_GEOFENCE,
+    REQUEST_NIRESPONSE,
+    REQUEST_DELETEAIDINGDATA,
+    REQUEST_CONTROL,
+    REQUEST_MAX,
+};
+
+class LocationAPIClientBase
+{
+public:
+    LocationAPIClientBase();
+    virtual ~LocationAPIClientBase();
+    LocationAPIClientBase(const LocationAPIClientBase&) = delete;
+    LocationAPIClientBase& operator=(const LocationAPIClientBase&) = delete;
+
+    void locAPISetCallbacks(LocationCallbacks& locationCallbacks);
+
+    // LocationAPI
+    uint32_t locAPIStartTracking(LocationOptions& options);
+    void locAPIStopTracking();
+    void locAPIUpdateTrackingOptions(LocationOptions& options);
+
+    int32_t locAPIGetBatchSize();
+    uint32_t locAPIStartSession(uint32_t id, uint32_t sessionMode,
+            LocationOptions& options);
+    uint32_t locAPIStopSession(uint32_t id);
+    uint32_t locAPIUpdateSessionOptions(uint32_t id, uint32_t sessionMode,
+            LocationOptions& options);
+    void locAPIGetBatchedLocations(size_t count);
+
+    uint32_t locAPIAddGeofences(size_t count, uint32_t* ids,
+            GeofenceOption* options, GeofenceInfo* data);
+    void locAPIRemoveGeofences(size_t count, uint32_t* ids);
+    void locAPIModifyGeofences(size_t count, uint32_t* ids, GeofenceOption* options);
+    void locAPIPauseGeofences(size_t count, uint32_t* ids);
+    void locAPIResumeGeofences(size_t count, uint32_t* ids, GeofenceBreachTypeMask* mask);
+    void locAPIRemoveAllGeofences();
+
+    void locAPIGnssNiResponse(uint32_t id, GnssNiResponse response);
+    uint32_t locAPIGnssDeleteAidingData(GnssAidingData& data);
+
+    uint32_t locAPIEnable(LocationTechnologyType techType);
+    void locAPIDisable();
+    uint32_t locAPIGnssUpdateConfig(GnssConfig config);
+
+    // callbacks
+    void onResponseCb(LocationError error, uint32_t id);
+    void onCollectiveResponseCb(size_t count, LocationError* errors, uint32_t* ids);
+
+    void onCtrlResponseCb(LocationError error, uint32_t id);
+    void onCtrlCollectiveResponseCb(size_t count, LocationError* errors, uint32_t* ids);
+
+    void beforeGeofenceBreachCb(GeofenceBreachNotification geofenceBreachNotification);
+
+    inline virtual void onCapabilitiesCb(LocationCapabilitiesMask /*capabilitiesMask*/) {}
+    inline virtual void onGnssNmeaCb(GnssNmeaNotification /*gnssNmeaNotification*/) {}
+    inline virtual void onGnssMeasurementsCb(
+            GnssMeasurementsNotification /*gnssMeasurementsNotification*/) {}
+
+    inline virtual void onTrackingCb(Location /*location*/) {}
+    inline virtual void onGnssSvCb(GnssSvNotification /*gnssSvNotification*/) {}
+    inline virtual void onStartTrackingCb(LocationError /*error*/) {}
+    inline virtual void onStopTrackingCb(LocationError /*error*/) {}
+    inline virtual void onUpdateTrackingOptionsCb(LocationError /*error*/) {}
+
+    inline virtual void onGnssLocationInfoCb(
+            GnssLocationInfoNotification /*gnssLocationInfoNotification*/) {}
+
+    inline virtual void onBatchingCb(size_t /*count*/, Location* /*location*/) {}
+    inline virtual void onStartBatchingCb(LocationError /*error*/) {}
+    inline virtual void onStopBatchingCb(LocationError /*error*/) {}
+    inline virtual void onUpdateBatchingOptionsCb(LocationError /*error*/) {}
+    inline virtual void onGetBatchedLocationsCb(LocationError /*error*/) {}
+
+    inline virtual void onGeofenceBreachCb(
+            GeofenceBreachNotification /*geofenceBreachNotification*/) {}
+    inline virtual void onGeofenceStatusCb(
+            GeofenceStatusNotification /*geofenceStatusNotification*/) {}
+    inline virtual void onAddGeofencesCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+    inline virtual void onRemoveGeofencesCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+    inline virtual void onModifyGeofencesCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+    inline virtual void onPauseGeofencesCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+    inline virtual void onResumeGeofencesCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+
+    inline virtual void onGnssNiCb(uint32_t /*id*/, GnssNiNotification /*gnssNiNotification*/) {}
+    inline virtual void onGnssNiResponseCb(LocationError /*error*/) {}
+    inline virtual void onGnssDeleteAidingDataCb(LocationError /*error*/) {}
+
+    inline virtual void onEnableCb(LocationError /*error*/) {}
+    inline virtual void onDisableCb(LocationError /*error*/) {}
+    inline virtual void onGnssUpdateConfigCb(
+            size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {}
+
+private:
+    // private inner classes
+    typedef struct {
+        uint32_t id;
+        uint32_t trackingSession;
+        uint32_t batchingSession;
+        uint32_t sessionMode;
+    } SessionEntity;
+
+    class BiDict {
+    public:
+        BiDict() {
+            pthread_mutex_init(&mBiDictMutex, nullptr);
+        }
+        ~BiDict() {
+            pthread_mutex_destroy(&mBiDictMutex);
+        }
+        bool hasId(uint32_t id) {
+            pthread_mutex_lock(&mBiDictMutex);
+            bool ret = (mForwardMap.find(id) != mForwardMap.end());
+            pthread_mutex_unlock(&mBiDictMutex);
+            return ret;
+        }
+        void set(uint32_t id, uint32_t session, uint32_t type) {
+            pthread_mutex_lock(&mBiDictMutex);
+            mForwardMap[id] = session;
+            mBackwardMap[session] = id;
+            mTypeMap[session] = type;
+            pthread_mutex_unlock(&mBiDictMutex);
+        }
+        void clear() {
+            pthread_mutex_lock(&mBiDictMutex);
+            mForwardMap.clear();
+            mBackwardMap.clear();
+            mTypeMap.clear();
+            pthread_mutex_unlock(&mBiDictMutex);
+        }
+        void rmById(uint32_t id) {
+            pthread_mutex_lock(&mBiDictMutex);
+            mBackwardMap.erase(mForwardMap[id]);
+            mTypeMap.erase(mForwardMap[id]);
+            mForwardMap.erase(id);
+            pthread_mutex_unlock(&mBiDictMutex);
+        }
+        void rmBySession(uint32_t session) {
+            pthread_mutex_lock(&mBiDictMutex);
+            mForwardMap.erase(mBackwardMap[session]);
+            mBackwardMap.erase(session);
+            mTypeMap.erase(session);
+            pthread_mutex_unlock(&mBiDictMutex);
+        }
+        uint32_t getId(uint32_t session) {
+            pthread_mutex_lock(&mBiDictMutex);
+            uint32_t ret = mBackwardMap[session];
+            pthread_mutex_unlock(&mBiDictMutex);
+            return ret;
+        }
+        uint32_t getSession(uint32_t id) {
+            pthread_mutex_lock(&mBiDictMutex);
+            uint32_t ret = mForwardMap[id];
+            pthread_mutex_unlock(&mBiDictMutex);
+            return ret;
+        }
+        uint32_t getType(uint32_t session) {
+            pthread_mutex_lock(&mBiDictMutex);
+            uint32_t ret = mTypeMap[session];
+            pthread_mutex_unlock(&mBiDictMutex);
+            return ret;
+        }
+        std::vector<uint32_t> getAllSessions() {
+            std::vector<uint32_t> ret;
+            pthread_mutex_lock(&mBiDictMutex);
+            for (auto it = mBackwardMap.begin(); it != mBackwardMap.end(); it++) {
+                ret.push_back(it->first);
+            }
+            pthread_mutex_unlock(&mBiDictMutex);
+            return ret;
+        }
+    private:
+        pthread_mutex_t mBiDictMutex;
+        // mForwarMap mapping id->session
+        std::map<uint32_t, uint32_t> mForwardMap;
+        // mBackwardMap mapping session->id
+        std::map<uint32_t, uint32_t> mBackwardMap;
+        // mTypeMap mapping session->type
+        std::map<uint32_t, uint32_t> mTypeMap;
+    };
+
+    class LocationAPIRequest {
+    public:
+        LocationAPIRequest(LocationAPIClientBase& API) : mAPI(API) {}
+        virtual ~LocationAPIRequest() {}
+        virtual void onResponse(LocationError /*error*/) {};
+        virtual void onCollectiveResponse(
+                size_t /*count*/, LocationError* /*errors*/, uint32_t* /*ids*/) {};
+        LocationAPIClientBase& mAPI;
+    };
+
+    class StartTrackingRequest : public LocationAPIRequest {
+    public:
+        StartTrackingRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onStartTrackingCb(error);
+        }
+    };
+
+    class StopTrackingRequest : public LocationAPIRequest {
+    public:
+        StopTrackingRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onStopTrackingCb(error);
+        }
+    };
+
+    class UpdateTrackingOptionsRequest : public LocationAPIRequest {
+    public:
+        UpdateTrackingOptionsRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onUpdateTrackingOptionsCb(error);
+        }
+    };
+
+    class StartBatchingRequest : public LocationAPIRequest {
+    public:
+        StartBatchingRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onStartBatchingCb(error);
+        }
+    };
+
+    class StopBatchingRequest : public LocationAPIRequest {
+    public:
+        StopBatchingRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onStopBatchingCb(error);
+        }
+    };
+
+    class UpdateBatchingOptionsRequest : public LocationAPIRequest {
+    public:
+        UpdateBatchingOptionsRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onUpdateBatchingOptionsCb(error);
+        }
+    };
+
+    class GetBatchedLocationsRequest : public LocationAPIRequest {
+    public:
+        GetBatchedLocationsRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onGetBatchedLocationsCb(error);
+        }
+    };
+
+    class AddGeofencesRequest : public LocationAPIRequest {
+    public:
+        AddGeofencesRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* sessions) {
+            uint32_t *ids = (uint32_t*)malloc(sizeof(uint32_t) * count);
+            for (size_t i = 0; i < count; i++) {
+                ids[i] = mAPI.mGeofenceBiDict.getId(sessions[i]);
+            }
+            mAPI.onAddGeofencesCb(count, errors, ids);
+            free(ids);
+        }
+    };
+
+    class RemoveGeofencesRequest : public LocationAPIRequest {
+    public:
+        RemoveGeofencesRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* sessions) {
+            uint32_t *ids = (uint32_t*)malloc(sizeof(uint32_t) * count);
+            for (size_t i = 0; i < count; i++) {
+                ids[i] = mAPI.mGeofenceBiDict.getId(sessions[i]);
+                mAPI.mGeofenceBiDict.rmBySession(sessions[i]);
+            }
+            mAPI.onRemoveGeofencesCb(count, errors, ids);
+            free(ids);
+        }
+    };
+
+    class ModifyGeofencesRequest : public LocationAPIRequest {
+    public:
+        ModifyGeofencesRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* sessions) {
+            uint32_t *ids = (uint32_t*)malloc(sizeof(uint32_t) * count);
+            for (size_t i = 0; i < count; i++) {
+                ids[i] = mAPI.mGeofenceBiDict.getId(sessions[i]);
+            }
+            mAPI.onModifyGeofencesCb(count, errors, ids);
+            free(ids);
+        }
+    };
+
+    class PauseGeofencesRequest : public LocationAPIRequest {
+    public:
+        PauseGeofencesRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* sessions) {
+            uint32_t *ids = (uint32_t*)malloc(sizeof(uint32_t) * count);
+            for (size_t i = 0; i < count; i++) {
+                ids[i] = mAPI.mGeofenceBiDict.getId(sessions[i]);
+            }
+            mAPI.onPauseGeofencesCb(count, errors, ids);
+            free(ids);
+        }
+    };
+
+    class ResumeGeofencesRequest : public LocationAPIRequest {
+    public:
+        ResumeGeofencesRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* sessions) {
+            uint32_t *ids = (uint32_t*)malloc(sizeof(uint32_t) * count);
+            for (size_t i = 0; i < count; i++) {
+                ids[i] = mAPI.mGeofenceBiDict.getId(sessions[i]);
+            }
+            mAPI.onResumeGeofencesCb(count, errors, ids);
+            free(ids);
+        }
+    };
+
+    class GnssNiResponseRequest : public LocationAPIRequest {
+    public:
+        GnssNiResponseRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onGnssNiResponseCb(error);
+        }
+    };
+
+    class GnssDeleteAidingDataRequest : public LocationAPIRequest {
+    public:
+        GnssDeleteAidingDataRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onGnssDeleteAidingDataCb(error);
+        }
+    };
+
+    class EnableRequest : public LocationAPIRequest {
+    public:
+        EnableRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onEnableCb(error);
+        }
+    };
+
+    class DisableRequest : public LocationAPIRequest {
+    public:
+        DisableRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onResponse(LocationError error) {
+            mAPI.onDisableCb(error);
+        }
+    };
+
+    class GnssUpdateConfigRequest : public LocationAPIRequest {
+    public:
+        GnssUpdateConfigRequest(LocationAPIClientBase& API) : LocationAPIRequest(API) {}
+        inline void onCollectiveResponse(size_t count, LocationError* errors, uint32_t* ids) {
+            mAPI.onGnssUpdateConfigCb(count, errors, ids);
+        }
+    };
+
+    class RequestQueue {
+    public:
+        RequestQueue(uint32_t session): mSession(session) {
+        }
+        ~RequestQueue() {
+            LocationAPIRequest* request = nullptr;
+            while (!mQueue.empty()) {
+                request = mQueue.front();
+                mQueue.pop();
+                delete request;
+            }
+        }
+        void push(LocationAPIRequest* request) {
+            mQueue.push(request);
+        }
+        LocationAPIRequest* pop() {
+            LocationAPIRequest* request = nullptr;
+            if (!mQueue.empty()) {
+                request = mQueue.front();
+                mQueue.pop();
+            }
+            return request;
+        }
+        uint32_t getSession() { return mSession; }
+    private:
+        uint32_t mSession;
+        std::queue<LocationAPIRequest*> mQueue;
+    };
+
+    LocationAPIRequest* getRequestBySession(uint32_t session);
+    LocationAPIRequest* getGeofencesRequest();
+
+private:
+    pthread_mutex_t mMutex;
+
+    trackingCallback mTrackingCallback;
+    batchingCallback mBatchingCallback;
+    geofenceBreachCallback mGeofenceBreachCallback;
+
+    LocationAPI* mLocationAPI;
+    LocationControlAPI* mLocationControlAPI;
+
+    BiDict mGeofenceBiDict;
+    RequestQueue* mRequestQueues[REQUEST_MAX];
+    std::map<uint32_t, SessionEntity> mSessionMap;
+    int32_t mBatchSize;
+
+    GnssConfig mConfig;
+};
+
+#endif /* LOCATION_API_CLINET_BASE_H */
diff --git a/sdm845/location/location_interface.h b/sdm845/location/location_interface.h
new file mode 100644
index 0000000..86febd3
--- /dev/null
+++ b/sdm845/location/location_interface.h
@@ -0,0 +1,91 @@
+/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOCATION_INTERFACE_H
+#define LOCATION_INTERFACE_H
+
+#include <LocationAPI.h>
+
+struct GnssInterface {
+    size_t size;
+    void (*initialize)(void);
+    void (*deinitialize)(void);
+    void (*addClient)(LocationAPI* client, const LocationCallbacks& callbacks);
+    void (*removeClient)(LocationAPI* client);
+    void (*requestCapabilities)(LocationAPI* client);
+    uint32_t (*startTracking)(LocationAPI* client, LocationOptions& options);
+    void (*updateTrackingOptions)(LocationAPI* client, uint32_t id, LocationOptions& options);
+    void (*stopTracking)(LocationAPI* client, uint32_t id);
+    void (*gnssNiResponse)(LocationAPI* client, uint32_t id, GnssNiResponse response);
+    void (*setControlCallbacks)(LocationControlCallbacks& controlCallbacks);
+    uint32_t (*enable)(LocationTechnologyType techType);
+    void (*disable)(uint32_t id);
+    uint32_t* (*gnssUpdateConfig)(GnssConfig config);
+    uint32_t (*gnssDeleteAidingData)(GnssAidingData& data);
+    void (*injectLocation)(double latitude, double longitude, float accuracy);
+    void (*injectTime)(int64_t time, int64_t timeReference, int32_t uncertainty);
+    void (*agpsInit)(void* statusV4Cb);
+    void (*agpsDataConnOpen)(short agpsType, const char* apnName, int apnLen, int ipType);
+    void (*agpsDataConnClosed)(short agpsType);
+    void (*agpsDataConnFailed)(short agpsType);
+    void (*getDebugReport)(GnssDebugReport& report);
+};
+
+struct FlpInterface {
+    size_t size;
+    void (*initialize)(void);
+    void (*deinitialize)(void);
+    void (*addClient)(LocationAPI* client, const LocationCallbacks& callbacks);
+    void (*removeClient)(LocationAPI* client);
+    void (*requestCapabilities)(LocationAPI* client);
+    uint32_t (*startTracking)(LocationAPI* client, LocationOptions& options);
+    void (*updateTrackingOptions)(LocationAPI* client, uint32_t id, LocationOptions& options);
+    void (*stopTracking)(LocationAPI* client, uint32_t id);
+    uint32_t (*startBatching)(LocationAPI* client, LocationOptions&);
+    void (*stopBatching)(LocationAPI* client, uint32_t id);
+    void (*updateBatchingOptions)(LocationAPI* client, uint32_t id, LocationOptions&);
+    void (*getBatchedLocations)(LocationAPI* client, uint32_t id, size_t count);
+    void (*getPowerStateChanges)(void* powerStateCb);
+};
+
+struct GeofenceInterface {
+    size_t size;
+    void (*initialize)(void);
+    void (*deinitialize)(void);
+    void (*addClient)(LocationAPI* client, const LocationCallbacks& callbacks);
+    void (*removeClient)(LocationAPI* client);
+    void (*requestCapabilities)(LocationAPI* client);
+    uint32_t* (*addGeofences)(LocationAPI* client, size_t count, GeofenceOption*, GeofenceInfo*);
+    void (*removeGeofences)(LocationAPI* client, size_t count, uint32_t* ids);
+    void (*modifyGeofences)(LocationAPI* client, size_t count, uint32_t* ids,
+                            GeofenceOption* options);
+    void (*pauseGeofences)(LocationAPI* client, size_t count, uint32_t* ids);
+    void (*resumeGeofences)(LocationAPI* client, size_t count, uint32_t* ids);
+};
+
+#endif /* LOCATION_INTERFACE_H */
diff --git a/sdm845/utils/Android.mk b/sdm845/utils/Android.mk
new file mode 100644
index 0000000..ef1e5e1
--- /dev/null
+++ b/sdm845/utils/Android.mk
@@ -0,0 +1,78 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+#Compile this library only for builds with the latest modem image
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+
+## Libs
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    liblog \
+    libloc_pla
+
+LOCAL_SRC_FILES += \
+    loc_log.cpp \
+    loc_cfg.cpp \
+    msg_q.c \
+    linked_list.c \
+    loc_target.cpp \
+    platform_lib_abstractions/elapsed_millis_since_boot.cpp \
+    LocHeap.cpp \
+    LocTimer.cpp \
+    LocThread.cpp \
+    MsgTask.cpp \
+    loc_misc_utils.cpp \
+    loc_nmea.cpp
+
+# Flag -std=c++11 is not accepted by compiler when LOCAL_CLANG is set to true
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+     -D_ANDROID_
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
+   LOCAL_CFLAGS += -DTARGET_BUILD_VARIANT_USER
+endif
+
+LOCAL_LDFLAGS += -Wl,--export-dynamic
+
+## Includes
+LOCAL_C_INCLUDES:= \
+    $(TARGET_OUT_HEADERS)/libloc_pla \
+    $(TARGET_OUT_HEADERS)/liblocation_api \
+
+LOCAL_COPY_HEADERS_TO:= gps.utils/
+LOCAL_COPY_HEADERS:= \
+   loc_log.h \
+   loc_cfg.h \
+   log_util.h \
+   linked_list.h \
+   msg_q.h \
+   MsgTask.h \
+   LocHeap.h \
+   LocThread.h \
+   LocTimer.h \
+   loc_target.h \
+   loc_timer.h \
+   LocSharedLock.h \
+   loc_misc_utils.h \
+   loc_nmea.h \
+   gps_extended_c.h \
+   gps_extended.h \
+   loc_gps.h
+
+LOCAL_MODULE := libgps.utils
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
+include $(addsuffix /Android.mk, $(addprefix $(LOCAL_PATH)/, platform_lib_abstractions))
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/utils/LocHeap.cpp b/sdm845/utils/LocHeap.cpp
new file mode 100644
index 0000000..d667f14
--- /dev/null
+++ b/sdm845/utils/LocHeap.cpp
@@ -0,0 +1,354 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <LocHeap.h>
+
+class LocHeapNode {
+    friend class LocHeap;
+
+    // size of of the subtree, excluding self, 1 if no subtree
+    int mSize;
+    LocHeapNode* mLeft;
+    LocHeapNode* mRight;
+    LocRankable* mData;
+public:
+    inline LocHeapNode(LocRankable& data) :
+        mSize(1), mLeft(NULL), mRight(NULL), mData(&data) {}
+    ~LocHeapNode();
+
+    // this only swaps the data of the two nodes, so no
+    // detach / re-attached is necessary
+    void swap(LocHeapNode& node);
+
+    LocRankable* detachData();
+
+    // push a node into the tree stucture, keeping sorted by rank
+    void push(LocHeapNode& node);
+
+    // pop the head node out of the tree stucture. keeping sorted by rank
+    static LocHeapNode* pop(LocHeapNode*& top);
+
+    // remove a specific node from the tree
+    // returns the pointer to the node removed, which would be either the
+    //         same as input (if successfully removed); or NULL (if failed).
+    static LocHeapNode* remove(LocHeapNode*& top, LocRankable& data);
+
+    // convenience method to compare data ranking
+    inline bool outRanks(LocHeapNode& node) { return mData->outRanks(*node.mData); }
+    inline bool outRanks(LocRankable& data) { return mData->outRanks(data); }
+
+    // checks if mSize is correct, AND this node is the highest ranking
+    // of the entire subtree
+    bool checkNodes();
+
+    inline int getSize() { return mSize; }
+};
+
+inline
+LocHeapNode::~LocHeapNode() {
+    if (mLeft) {
+        delete mLeft;
+        mLeft = NULL;
+    }
+    if (mRight) {
+        delete mRight;
+        mRight = NULL;
+    }
+    if (mData) {
+        mData = NULL;
+    }
+}
+
+inline
+void LocHeapNode::swap(LocHeapNode& node) {
+    LocRankable* tmpData = node.mData;
+    node.mData = mData;
+    mData = tmpData;
+}
+
+inline
+LocRankable* LocHeapNode::detachData()  {
+    LocRankable* data = mData;
+    mData = NULL;
+    return data;
+}
+
+// push keeps the tree sorted by rank, it also tries to balance the
+// tree by adding the new node to the smaller of the subtrees.
+// The pointer to the tree and internal links never change. If the
+// mData of tree top ranks lower than that of the incoming node,
+// mData will be swapped with that of the incoming node to ensure
+// ranking, no restructuring the container nodes.
+void LocHeapNode::push(LocHeapNode& node) {
+    // ensure the current node ranks higher than in the incoming one
+    if (node.outRanks(*this)) {
+        swap(node);
+    }
+
+    // now drop the new node (ensured lower than *this) into a subtree
+    if (NULL == mLeft) {
+        mLeft = &node;
+    } else if (NULL == mRight) {
+        mRight = &node;
+    } else if (mLeft->mSize <= mRight->mSize) {
+        mLeft->push(node);
+    } else {
+        mRight->push(node);
+    }
+    mSize++;
+}
+
+// pop keeps the tree sorted by rank, but it does not try to balance
+// the tree. It recursively swaps with the higher ranked top of the
+// subtrees.
+// The return is a popped out node from leaf level, that has the data
+// swapped all the way down from the top. The pinter to the tree and
+// internal links will not be changed or restructured, except for the
+// node that is popped out.
+// If the return pointer == this, this the last node in the tree.
+LocHeapNode* LocHeapNode::pop(LocHeapNode*& top) {
+    // we know the top has the highest ranking at this point, else
+    // the tree is broken. This top will be popped out.  But we need
+    // a node from the left or right child, whichever ranks higher,
+    // to replace the current top. This then will need to be done
+    // recursively to the leaf level. So we swap the mData of the
+    // current top node all the way down to the leaf level.
+    LocHeapNode* poppedNode = top;
+    // top is losing a node in its subtree
+    top->mSize--;
+    if (top->mLeft || top->mRight) {
+        // if mLeft is NULL, mRight for sure is NOT NULL, take that;
+        // else if mRight is NULL, mLeft for sure is NOT, take that;
+        // else we take the address of whatever has higher ranking mData
+        LocHeapNode*& subTop = (NULL == top->mLeft) ? top->mRight :
+            ((NULL == top->mRight) ? top->mLeft :
+             (top->mLeft->outRanks(*(top->mRight)) ? top->mLeft : top->mRight));
+        // swap mData, the tree top gets updated with the new data.
+        top->swap(*subTop);
+        // pop out from the subtree
+        poppedNode = pop(subTop);
+    } else {
+        // if the top has only single node
+        // detach the poppedNode from the tree
+        // subTop is the reference of ether mLeft or mRight
+        // NOT a local stack pointer. so it MUST be NULL'ed here.
+        top = NULL;
+    }
+
+    return poppedNode;
+}
+
+// navigating through the tree and find the node that hass the input
+// data. Since this is a heap, we do recursive linear search.
+// returns the pointer to the node removed, which would be either the
+//         same as input (if successfully removed); or NULL (if failed).
+LocHeapNode* LocHeapNode::remove(LocHeapNode*& top, LocRankable& data) {
+    LocHeapNode* removedNode = NULL;
+    // this is the node, by address
+    if (&data == (LocRankable*)(top->mData)) {
+        // pop this node out
+        removedNode = pop(top);
+    } else if (!data.outRanks(*top->mData)) {
+        // subtrees might have this node
+        if (top->mLeft) {
+            removedNode = remove(top->mLeft, data);
+        }
+        // if we did not find in mLeft, and mRight is not empty
+        if (!removedNode && top->mRight) {
+            removedNode = remove(top->mRight, data);
+        }
+
+        // top lost a node in its subtree
+        if (removedNode) {
+            top->mSize--;
+        }
+    }
+
+    return removedNode;
+}
+
+// checks if mSize is correct, AND this node is the highest ranking
+// of the entire subtree
+bool LocHeapNode::checkNodes() {
+    // size of the current subtree
+    int totalSize = mSize;
+    if (mLeft) {
+        // check the consistency of left subtree
+        if (mLeft->outRanks(*this) || !mLeft->checkNodes()) {
+            return false;
+        }
+        // subtract the size of left subtree (with subtree head)
+        totalSize -= mLeft->mSize;
+    }
+
+    if (mRight) {
+        // check the consistency of right subtree
+        if (mRight->outRanks(*this) || !mRight->checkNodes()) {
+            return false;
+        }
+        // subtract the size of right subtree (with subtree head)
+        totalSize -= mRight->mSize;
+    }
+
+    // for the tree nodes to consistent, totalSize must be 1 now
+    return totalSize == 1;
+}
+
+LocHeap::~LocHeap() {
+    if (mTree) {
+        delete mTree;
+    }
+}
+
+void LocHeap::push(LocRankable& node) {
+    LocHeapNode* heapNode = new LocHeapNode(node);
+    if (!mTree) {
+        mTree = heapNode;
+    } else {
+        mTree->push(*heapNode);
+    }
+}
+
+LocRankable* LocHeap::peek() {
+    LocRankable* top = NULL;
+    if (mTree) {
+        top = mTree->mData;
+    }
+    return top;
+}
+
+LocRankable* LocHeap::pop() {
+    LocRankable* locNode = NULL;
+    if (mTree) {
+        // mTree may become NULL after this call
+        LocHeapNode* heapNode = LocHeapNode::pop(mTree);
+        locNode = heapNode->detachData();
+        delete heapNode;
+    }
+    return locNode;
+}
+
+LocRankable* LocHeap::remove(LocRankable& rankable) {
+    LocRankable* locNode = NULL;
+    if (mTree) {
+        // mTree may become NULL after this call
+        LocHeapNode* heapNode = LocHeapNode::remove(mTree, rankable);
+        if (heapNode) {
+            locNode = heapNode->detachData();
+            delete heapNode;
+        }
+    }
+    return locNode;
+}
+
+#ifdef __LOC_UNIT_TEST__
+bool LocHeap::checkTree() {
+    return ((NULL == mTree) || mTree->checkNodes());
+}
+uint32_t LocHeap::getTreeSize() {
+    return (NULL == mTree) ? 0 : mTree->getSize();
+}
+#endif
+
+#ifdef __LOC_DEBUG__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+class LocHeapDebug : public LocHeap {
+public:
+    bool checkTree() {
+        return ((NULL == mTree) || mTree->checkNodes());
+    }
+
+    uint32_t getTreeSize() {
+        return (NULL == mTree) ? 0 : (mTree->getSize());
+    }
+};
+
+class LocHeapDebugData : public LocRankable {
+    const int mID;
+public:
+    LocHeapDebugData(int id) : mID(id) {}
+    inline virtual int ranks(LocRankable& rankable) {
+        LocHeapDebugData* testData = dynamic_cast<LocHeapDebugData*>(&rankable);
+        return testData->mID - mID;
+    }
+};
+
+// For Linux command line testing:
+// compilation: g++ -D__LOC_HOST_DEBUG__ -D__LOC_DEBUG__ -g -I. -I../../../../vendor/qcom/proprietary/gps-internal/unit-tests/fakes_for_host -I../../../../system/core/include LocHeap.cpp
+// test: valgrind --leak-check=full ./a.out 100
+int main(int argc, char** argv) {
+    srand(time(NULL));
+    int tries = atoi(argv[1]);
+    int checks = tries >> 3;
+    LocHeapDebug heap;
+    int treeSize = 0;
+
+    for (int i = 0; i < tries; i++) {
+        if (i % checks == 0 && !heap.checkTree()) {
+            printf("tree check failed before %dth op\n", i);
+        }
+        int r = rand();
+
+        if (r & 1) {
+            LocHeapDebugData* data = new LocHeapDebugData(r >> 1);
+            heap.push(dynamic_cast<LocRankable&>(*data));
+            treeSize++;
+        } else {
+            LocRankable* rankable = heap.pop();
+            if (rankable) {
+                delete rankable;
+            }
+            treeSize ? treeSize-- : 0;
+        }
+
+        printf("%s: %d == %d\n", (r&1)?"push":"pop", treeSize, heap.getTreeSize());
+        if (treeSize != heap.getTreeSize()) {
+            printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
+            tries = i+1;
+            break;
+        }
+    }
+
+    if (!heap.checkTree()) {
+        printf("!!!!!!!!!!tree check failed at the end after %d ops!!!!!!!\n", tries);
+    } else {
+        printf("success!\n");
+    }
+
+    for (LocRankable* data = heap.pop(); NULL != data; data = heap.pop()) {
+        delete data;
+    }
+
+    return 0;
+}
+
+#endif
diff --git a/sdm845/utils/LocHeap.h b/sdm845/utils/LocHeap.h
new file mode 100644
index 0000000..b491948
--- /dev/null
+++ b/sdm845/utils/LocHeap.h
@@ -0,0 +1,96 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_HEAP__
+#define __LOC_HEAP__
+
+#include <stddef.h>
+#include <string.h>
+
+// abstract class to be implemented by client to provide a rankable class
+class LocRankable {
+public:
+    virtual inline ~LocRankable() {}
+
+    // method to rank objects of such type for sorting purposes.
+    // The pointer of the input node would be stored in the heap.
+    // >0 if ranks higher than the input;
+    // ==0 if equally ranks with the input;
+    // <0 if ranks lower than the input
+    virtual int ranks(LocRankable& rankable) = 0;
+
+    // convenient method to rank objects of such type for sorting purposes.
+    inline bool outRanks(LocRankable& rankable) { return ranks(rankable) > 0; }
+};
+
+// opaque class to provide service implementation.
+class LocHeapNode;
+
+// a heap whose left and right children are not sorted. It is sorted only vertically,
+// i.e. parent always ranks higher than children, if they exist. Ranking algorithm is
+// implemented in Rankable. The reason that there is no sort between children is to
+// help beter balance the tree with lower cost. When a node is pushed to the tree,
+// it is guaranteed that the subtree that is smaller gets to have the new node.
+class LocHeap {
+protected:
+    LocHeapNode* mTree;
+public:
+    inline LocHeap() : mTree(NULL) {}
+    ~LocHeap();
+
+    // push keeps the tree sorted by rank, it also tries to balance the
+    // tree by adding the new node to the smaller of the subtrees.
+    // node is reference to an obj that is managed by client, that client
+    //      creates and destroyes. The destroy should happen after the
+    //      node is popped out from the heap.
+    void push(LocRankable& node);
+
+    // Peeks the node data on tree top, which has currently the highest ranking
+    // There is no change the tree structure with this operation
+    // Returns NULL if the tree is empty, otherwise pointer to the node data of
+    //         the tree top.
+    LocRankable* peek();
+
+    // pop keeps the tree sorted by rank, but it does not try to balance
+    // the tree.
+    // Return - pointer to the node popped out, or NULL if heap is already empty
+    LocRankable* pop();
+
+    // navigating through the tree and find the node that ranks the same
+    // as the input data, then remove it from the tree. Rank is implemented
+    // by rankable obj.
+    // returns the pointer to the node removed; or NULL (if failed).
+    LocRankable* remove(LocRankable& rankable);
+
+#ifdef __LOC_UNIT_TEST__
+    bool checkTree();
+    uint32_t getTreeSize();
+#endif
+};
+
+#endif //__LOC_HEAP__
diff --git a/sdm845/utils/LocSharedLock.h b/sdm845/utils/LocSharedLock.h
new file mode 100644
index 0000000..7fe6237
--- /dev/null
+++ b/sdm845/utils/LocSharedLock.h
@@ -0,0 +1,59 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_SHARED_LOCK__
+#define __LOC_SHARED_LOCK__
+
+#include <stddef.h>
+#include <cutils/atomic.h>
+#include <pthread.h>
+
+// This is a utility created for use cases such that there are more than
+// one client who need to share the same lock, but it is not predictable
+// which of these clients is to last to go away. This shared lock deletes
+// itself when the last client calls its drop() method. To add a cient,
+// this share lock's share() method has to be called, so that the obj
+// can maintain an accurate client count.
+class LocSharedLock {
+    volatile int32_t mRef;
+    pthread_mutex_t mMutex;
+    inline ~LocSharedLock() { pthread_mutex_destroy(&mMutex); }
+public:
+    // first client to create this LockSharedLock
+    inline LocSharedLock() : mRef(1) { pthread_mutex_init(&mMutex, NULL); }
+    // following client(s) are to *share()* this lock created by the first client
+    inline LocSharedLock* share() { android_atomic_inc(&mRef); return this; }
+    // whe a client no longer needs this shared lock, drop() shall be called.
+    inline void drop() { if (1 == android_atomic_dec(&mRef)) delete this; }
+    // locking the lock to enter critical section
+    inline void lock() { pthread_mutex_lock(&mMutex); }
+    // unlocking the lock to leave the critical section
+    inline void unlock() { pthread_mutex_unlock(&mMutex); }
+};
+
+#endif //__LOC_SHARED_LOCK__
diff --git a/sdm845/utils/LocThread.cpp b/sdm845/utils/LocThread.cpp
new file mode 100644
index 0000000..685841e
--- /dev/null
+++ b/sdm845/utils/LocThread.cpp
@@ -0,0 +1,266 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <LocThread.h>
+#include <string.h>
+#include <pthread.h>
+#include <platform_lib_macros.h>
+
+class LocThreadDelegate {
+    LocRunnable* mRunnable;
+    bool mJoinable;
+    pthread_t mThandle;
+    pthread_mutex_t mMutex;
+    int mRefCount;
+    ~LocThreadDelegate();
+    LocThreadDelegate(LocThread::tCreate creator, const char* threadName,
+                      LocRunnable* runnable, bool joinable);
+    void destroy();
+public:
+    static LocThreadDelegate* create(LocThread::tCreate creator,
+            const char* threadName, LocRunnable* runnable, bool joinable);
+    void stop();
+    // bye() is for the parent thread to go away. if joinable,
+    // parent must stop the spawned thread, join, and then
+    // destroy(); if detached, the parent can go straight
+    // ahead to destroy()
+    inline void bye() { mJoinable ? stop() : destroy(); }
+    inline bool isRunning() { return (NULL != mRunnable); }
+    static void* threadMain(void* arg);
+};
+
+// it is important to note that internal members must be
+// initialized to values as if pthread_create succeeds.
+// This is to avoid the race condition between the threads,
+// once the thread is created, some of these values will
+// be check in the spawned thread, and must set correctly
+// then and there.
+// However, upon pthread_create failure, the data members
+// must be set to  indicate failure, e.g. mRunnable, and
+// threashold approprietly for destroy(), e.g. mRefCount.
+LocThreadDelegate::LocThreadDelegate(LocThread::tCreate creator,
+        const char* threadName, LocRunnable* runnable, bool joinable) :
+    mRunnable(runnable), mJoinable(joinable), mThandle(NULL),
+    mMutex(PTHREAD_MUTEX_INITIALIZER), mRefCount(2) {
+
+    // set up thread name, if nothing is passed in
+    if (!threadName) {
+        threadName = "LocThread";
+    }
+
+    // create the thread here, then if successful
+    // and a name is given, we set the thread name
+    if (creator) {
+        mThandle = creator(threadName, threadMain, this);
+    } else if (pthread_create(&mThandle, NULL, threadMain, this)) {
+        // pthread_create() failed
+        mThandle = NULL;
+    }
+
+    if (mThandle) {
+        // set thread name
+        char lname[16];
+        int len = (sizeof(lname)>sizeof(threadName)) ?
+          (sizeof(threadName) -1):(sizeof(lname) - 1);
+        memcpy(lname, threadName, len);
+        lname[len] = 0;
+        // set the thread name here
+        pthread_setname_np(mThandle, lname);
+
+        // detach, if not joinable
+        if (!joinable) {
+            pthread_detach(mThandle);
+        }
+    } else {
+        // must set these values upon failure
+        mRunnable = NULL;
+        mJoinable = false;
+        mRefCount = 1;
+    }
+}
+
+inline
+LocThreadDelegate::~LocThreadDelegate() {
+    // at this point nothing should need done any more
+}
+
+// factory method so that we could return NULL upon failure
+LocThreadDelegate* LocThreadDelegate::create(LocThread::tCreate creator,
+        const char* threadName, LocRunnable* runnable, bool joinable) {
+    LocThreadDelegate* thread = NULL;
+    if (runnable) {
+        thread = new LocThreadDelegate(creator, threadName, runnable, joinable);
+        if (thread && !thread->isRunning()) {
+            thread->destroy();
+            thread = NULL;
+        }
+    }
+
+    return thread;
+}
+
+// The order is importang
+// NULLing mRunnalbe stops the while loop in threadMain()
+// join() if mJoinble must come before destroy() call, as
+// the obj must remain alive at this time so that mThandle
+// remains valud.
+void LocThreadDelegate::stop() {
+    // mRunnable and mJoinable are reset on different triggers.
+    // mRunnable may get nulled on the spawned thread's way out;
+    //           or here.
+    // mJouinable (if ever been true) gets falsed when client
+    //            thread triggers stop, with either a stop()
+    //            call or the client releases thread obj handle.
+    if (mRunnable) {
+        mRunnable = NULL;
+    }
+    if (mJoinable) {
+        mJoinable = false;
+        pthread_join(mThandle, NULL);
+    }
+    // call destroy() to possibly delete the obj
+    destroy();
+}
+
+// method for clients to call to release the obj
+// when it is a detached thread, the client thread
+// and the spawned thread can both try to destroy()
+// asynchronously. And we delete this obj when
+// mRefCount becomes 0.
+void LocThreadDelegate::destroy() {
+    // else case shouldn't happen, unless there is a
+    // leaking obj. But only our code here has such
+    // obj, so if we test our code well, else case
+    // will never happen
+    if (mRefCount > 0) {
+        // we need a flag on the stack
+        bool callDelete = false;
+
+        // critical section between threads
+        pthread_mutex_lock(&mMutex);
+        // last destroy() call
+        callDelete = (1 == mRefCount--);
+        pthread_mutex_unlock(&mMutex);
+
+        // upon last destroy() call we delete this obj
+        if (callDelete) {
+            delete this;
+        }
+    }
+}
+
+void* LocThreadDelegate::threadMain(void* arg) {
+    LocThreadDelegate* locThread = (LocThreadDelegate*)(arg);
+
+    if (locThread) {
+        LocRunnable* runnable = locThread->mRunnable;
+
+        if (runnable) {
+            if (locThread->isRunning()) {
+                runnable->prerun();
+            }
+
+            while (locThread->isRunning() && runnable->run());
+
+            if (locThread->isRunning()) {
+                runnable->postrun();
+            }
+
+            // at this time, locThread->mRunnable may or may not be NULL
+            // NULL it just to be safe and clean, as we want the field
+            // in the released memory slot to be NULL.
+            locThread->mRunnable = NULL;
+            delete runnable;
+        }
+        locThread->destroy();
+    }
+
+    return NULL;
+}
+
+LocThread::~LocThread() {
+    if (mThread) {
+        mThread->bye();
+        mThread = NULL;
+    }
+}
+
+bool LocThread::start(tCreate creator, const char* threadName, LocRunnable* runnable, bool joinable) {
+    bool success = false;
+    if (!mThread) {
+        mThread = LocThreadDelegate::create(creator, threadName, runnable, joinable);
+        // true only if thread is created successfully
+        success = (NULL != mThread);
+    }
+    return success;
+}
+
+void LocThread::stop() {
+    if (mThread) {
+        mThread->stop();
+        mThread = NULL;
+    }
+}
+
+#ifdef __LOC_DEBUG__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+class LocRunnableTest1 : public LocRunnable {
+    int mID;
+public:
+    LocRunnableTest1(int id) : LocRunnable(), mID(id) {}
+    virtual bool run() {
+        printf("LocRunnableTest1: %d\n", mID++);
+        sleep(1);
+        return true;
+    }
+};
+
+// on linux command line:
+// compile: g++ -D__LOC_HOST_DEBUG__ -D__LOC_DEBUG__ -g -std=c++0x -I. -I../../../../vendor/qcom/proprietary/gps-internal/unit-tests/fakes_for_host -I../../../../system/core/include -lpthread LocThread.cpp
+// test detached thread: valgrind ./a.out 0
+// test joinable thread: valgrind ./a.out 1
+int main(int argc, char** argv) {
+    LocRunnableTest1 test(10);
+
+    LocThread thread;
+    thread.start("LocThreadTest", test, atoi(argv[1]));
+
+    sleep(10);
+
+    thread.stop();
+
+    sleep(5);
+
+    return 0;
+}
+
+#endif
diff --git a/sdm845/utils/LocThread.h b/sdm845/utils/LocThread.h
new file mode 100644
index 0000000..2a65d8f
--- /dev/null
+++ b/sdm845/utils/LocThread.h
@@ -0,0 +1,92 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __LOC_THREAD__
+#define __LOC_THREAD__
+
+#include <stddef.h>
+#include <pthread.h>
+
+// abstract class to be implemented by client to provide a runnable class
+// which gets scheduled by LocThread
+class LocRunnable {
+public:
+    inline LocRunnable() {}
+    inline virtual ~LocRunnable() {}
+
+    // The method to be implemented by thread clients
+    // and be scheduled by LocThread
+    // This method will be repeated called until it returns false; or
+    // until thread is stopped.
+    virtual bool run() = 0;
+
+    // The method to be run before thread loop (conditionally repeatedly)
+    // calls run()
+    inline virtual void prerun() {}
+
+    // The method to be run after thread loop (conditionally repeatedly)
+    // calls run()
+    inline virtual void postrun() {}
+};
+
+// opaque class to provide service implementation.
+class LocThreadDelegate;
+
+// A utility class to create a thread and run LocRunnable
+// caller passes in.
+class LocThread {
+    LocThreadDelegate* mThread;
+public:
+    inline LocThread() : mThread(NULL) {}
+    virtual ~LocThread();
+
+    typedef pthread_t (*tCreate)(const char* name, void* (*start)(void*), void* arg);
+    // client starts thread with a runnable, which implements
+    // the logics to fun in the created thread context.
+    // The thread could be either joinable or detached.
+    // runnable is an obj managed by client. Client creates and
+    //          frees it (but must be after stop() is called, or
+    //          this LocThread obj is deleted).
+    //          The obj will be deleted by LocThread if start()
+    //          returns true. Else it is client's responsibility
+    //          to delete the object
+    // Returns 0 if success; false if failure.
+    bool start(tCreate creator, const char* threadName, LocRunnable* runnable, bool joinable = true);
+    inline bool start(const char* threadName, LocRunnable* runnable, bool joinable = true) {
+        return start(NULL, threadName, runnable, joinable);
+    }
+
+    // NOTE: if this is a joinable thread, this stop may block
+    // for a while until the thread is joined.
+    void stop();
+
+    // thread status check
+    inline bool isRunning() { return NULL != mThread; }
+};
+
+#endif //__LOC_THREAD__
diff --git a/sdm845/utils/LocTimer.cpp b/sdm845/utils/LocTimer.cpp
new file mode 100644
index 0000000..4de6b40
--- /dev/null
+++ b/sdm845/utils/LocTimer.cpp
@@ -0,0 +1,742 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <errno.h>
+#include <loc_timer.h>
+#include <sys/timerfd.h>
+#include <sys/epoll.h>
+#include <LocTimer.h>
+#include <LocHeap.h>
+#include <LocThread.h>
+#include <LocSharedLock.h>
+#include <MsgTask.h>
+
+#ifdef __HOST_UNIT_TEST__
+#define EPOLLWAKEUP 0
+#define CLOCK_BOOTTIME CLOCK_MONOTONIC
+#define CLOCK_BOOTTIME_ALARM CLOCK_MONOTONIC
+#endif
+
+/*
+There are implementations of 5 classes in this file:
+LocTimer, LocTimerDelegate, LocTimerContainer, LocTimerPollTask, LocTimerWrapper
+
+LocTimer - client front end, interface for client to start / stop timers, also
+           to provide a callback.
+LocTimerDelegate - an internal timer entity, which also is a LocRankable obj.
+                   Its life cycle is different than that of LocTimer. It gets
+                   created when LocTimer::start() is called, and gets deleted
+                   when it expires or clients calls the hosting LocTimer obj's
+                   stop() method. When a LocTimerDelegate obj is ticking, it
+                   stays in the corresponding LocTimerContainer. When expired
+                   or stopped, the obj is removed from the container. Since it
+                   is also a LocRankable obj, and LocTimerContainer also is a
+                   heap, its ranks() implementation decides where it is placed
+                   in the heap.
+LocTimerContainer - core of the timer service. It is a container (derived from
+                    LocHeap) for LocTimerDelegate (implements LocRankable) objs.
+                    There are 2 of such containers, one for sw timers (or Linux
+                    timers) one for hw timers (or Linux alarms). It adds one of
+                    each (those that expire the soonest) to kernel via services
+                    provided by LocTimerPollTask. All the heap management on the
+                    LocTimerDelegate objs are done in the MsgTask context, such
+                    that synchronization is ensured.
+LocTimerPollTask - is a class that wraps timerfd and epoll POXIS APIs. It also
+                   both implements LocRunnalbe with epoll_wait() in the run()
+                   method. It is also a LocThread client, so as to loop the run
+                   method.
+LocTimerWrapper - a LocTimer client itself, to implement the existing C API with
+                  APIs, loc_timer_start() and loc_timer_stop().
+
+*/
+
+class LocTimerPollTask;
+
+// This is a multi-functaional class that:
+// * extends the LocHeap class for the detection of head update upon add / remove
+//   events. When that happens, soonest time out changes, so timerfd needs update.
+// * contains the timers, and add / remove them into the heap
+// * provides and maps 2 of such containers, one for timers (or  mSwTimers), one
+//   for alarms (or mHwTimers);
+// * provides a polling thread;
+// * provides a MsgTask thread for synchronized add / remove / timer client callback.
+class LocTimerContainer : public LocHeap {
+    // mutex to synchronize getters of static members
+    static pthread_mutex_t mMutex;
+    // Container of timers
+    static LocTimerContainer* mSwTimers;
+    // Container of alarms
+    static LocTimerContainer* mHwTimers;
+    // Msg task to provider msg Q, sender and reader.
+    static MsgTask* mMsgTask;
+    // Poll task to provide epoll call and threading to poll.
+    static LocTimerPollTask* mPollTask;
+    // timer / alarm fd
+    int mDevFd;
+    // ctor
+    LocTimerContainer(bool wakeOnExpire);
+    // dtor
+    ~LocTimerContainer();
+    static MsgTask* getMsgTaskLocked();
+    static LocTimerPollTask* getPollTaskLocked();
+    // extend LocHeap and pop if the top outRanks input
+    LocTimerDelegate* popIfOutRanks(LocTimerDelegate& timer);
+    // update the timer POSIX calls with updated soonest timer spec
+    void updateSoonestTime(LocTimerDelegate* priorTop);
+
+public:
+    // factory method to control the creation of mSwTimers / mHwTimers
+    static LocTimerContainer* get(bool wakeOnExpire);
+
+    LocTimerDelegate* getSoonestTimer();
+    int getTimerFd();
+    // add a timer / alarm obj into the container
+    void add(LocTimerDelegate& timer);
+    // remove a timer / alarm obj from the container
+    void remove(LocTimerDelegate& timer);
+    // handling of timer / alarm expiration
+    void expire();
+};
+
+// This class implements the polling thread that epolls imer / alarm fds.
+// The LocRunnable::run() contains the actual polling.  The other methods
+// will be run in the caller's thread context to add / remove timer / alarm
+// fds the kernel, while the polling is blocked on epoll_wait() call.
+// Since the design is that we have maximally 2 polls, one for all the
+// timers; one for all the alarms, we will poll at most on 2 fds.  But it
+// is possile that all we have are only timers or alarms at one time, so we
+// allow dynamically add / remove fds we poll on. The design decision of
+// having 1 fd per container of timer / alarm is such that, we may not need
+// to make a system call each time a timer / alarm is added / removed, unless
+// that changes the "soonest" time out of that of all the timers / alarms.
+class LocTimerPollTask : public LocRunnable {
+    // the epoll fd
+    const int mFd;
+    // the thread that calls run() method
+    LocThread* mThread;
+    friend class LocThreadDelegate;
+    // dtor
+    ~LocTimerPollTask();
+public:
+    // ctor
+    LocTimerPollTask();
+    // this obj will be deleted once thread is deleted
+    void destroy();
+    // add a container of timers. Each contain has a unique device fd, i.e.
+    // either timer or alarm fd, and a heap of timers / alarms. It is expected
+    // that container would have written to the device fd with the soonest
+    // time out value in the heap at the time of calling this method. So all
+    // this method does is to add the fd of the input container to the poll
+    // and also add the pointer of the container to the event data ptr, such
+    // when poll_wait wakes up on events, we know who is the owner of the fd.
+    void addPoll(LocTimerContainer& timerContainer);
+    // remove a fd that is assciated with a container. The expectation is that
+    // the atual timer would have been removed from the container.
+    void removePoll(LocTimerContainer& timerContainer);
+    // The polling thread context will call this method. This is where
+    // epoll_wait() is blocking and waiting for events..
+    virtual bool run();
+};
+
+// Internal class of timer obj. It gets born when client calls LocTimer::start();
+// and gets deleted when client calls LocTimer::stop() or when the it expire()'s.
+// This class implements LocRankable::ranks() so that when an obj is added into
+// the container (of LocHeap), it gets placed in sorted order.
+class LocTimerDelegate : public LocRankable {
+    friend class LocTimerContainer;
+    friend class LocTimer;
+    LocTimer* mClient;
+    LocSharedLock* mLock;
+    struct timespec mFutureTime;
+    LocTimerContainer* mContainer;
+    // not a complete obj, just ctor for LocRankable comparisons
+    inline LocTimerDelegate(struct timespec& delay)
+        : mClient(NULL), mLock(NULL), mFutureTime(delay), mContainer(NULL) {}
+    inline ~LocTimerDelegate() { if (mLock) { mLock->drop(); mLock = NULL; } }
+public:
+    LocTimerDelegate(LocTimer& client, struct timespec& futureTime, bool wakeOnExpire);
+    void destroyLocked();
+    // LocRankable virtual method
+    virtual int ranks(LocRankable& rankable);
+    void expire();
+    inline struct timespec getFutureTime() { return mFutureTime; }
+};
+
+/***************************LocTimerContainer methods***************************/
+
+// Most of these static recources are created on demand. They however are never
+// destoyed. The theory is that there are processes that link to this util lib
+// but never use timer, then these resources would never need to be created.
+// For those processes that do use timer, it will likely also need to every
+// once in a while. It might be cheaper keeping them around.
+pthread_mutex_t LocTimerContainer::mMutex = PTHREAD_MUTEX_INITIALIZER;
+LocTimerContainer* LocTimerContainer::mSwTimers = NULL;
+LocTimerContainer* LocTimerContainer::mHwTimers = NULL;
+MsgTask* LocTimerContainer::mMsgTask = NULL;
+LocTimerPollTask* LocTimerContainer::mPollTask = NULL;
+
+// ctor - initialize timer heaps
+// A container for swTimer (timer) is created, when wakeOnExpire is true; or
+// HwTimer (alarm), when wakeOnExpire is false.
+LocTimerContainer::LocTimerContainer(bool wakeOnExpire) :
+    mDevFd(timerfd_create(wakeOnExpire ? CLOCK_BOOTTIME_ALARM : CLOCK_BOOTTIME, 0)) {
+
+    if ((-1 == mDevFd) && (errno == EINVAL)) {
+        LOC_LOGW("%s: timerfd_create failure, fallback to CLOCK_MONOTONIC - %s",
+            __FUNCTION__, strerror(errno));
+        mDevFd = timerfd_create(CLOCK_MONOTONIC, 0);
+    }
+
+    if (-1 != mDevFd) {
+        // ensure we have the necessary resources created
+        LocTimerContainer::getPollTaskLocked();
+        LocTimerContainer::getMsgTaskLocked();
+    } else {
+        LOC_LOGE("%s: timerfd_create failure - %s", __FUNCTION__, strerror(errno));
+    }
+}
+
+// dtor
+// we do not ever destroy the static resources.
+inline
+LocTimerContainer::~LocTimerContainer() {
+    close(mDevFd);
+}
+
+LocTimerContainer* LocTimerContainer::get(bool wakeOnExpire) {
+    // get the reference of either mHwTimer or mSwTimers per wakeOnExpire
+    LocTimerContainer*& container = wakeOnExpire ? mHwTimers : mSwTimers;
+    // it is cheap to check pointer first than locking mutext unconditionally
+    if (!container) {
+        pthread_mutex_lock(&mMutex);
+        // let's check one more time to be safe
+        if (!container) {
+            container = new LocTimerContainer(wakeOnExpire);
+            // timerfd_create failure
+            if (-1 == container->getTimerFd()) {
+                delete container;
+                container = NULL;
+            }
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+    return container;
+}
+
+MsgTask* LocTimerContainer::getMsgTaskLocked() {
+    // it is cheap to check pointer first than locking mutext unconditionally
+    if (!mMsgTask) {
+        mMsgTask = new MsgTask("LocTimerMsgTask", false);
+    }
+    return mMsgTask;
+}
+
+LocTimerPollTask* LocTimerContainer::getPollTaskLocked() {
+    // it is cheap to check pointer first than locking mutext unconditionally
+    if (!mPollTask) {
+        mPollTask = new LocTimerPollTask();
+    }
+    return mPollTask;
+}
+
+inline
+LocTimerDelegate* LocTimerContainer::getSoonestTimer() {
+    return (LocTimerDelegate*)(peek());
+}
+
+inline
+int LocTimerContainer::getTimerFd() {
+    return mDevFd;
+}
+
+void LocTimerContainer::updateSoonestTime(LocTimerDelegate* priorTop) {
+    LocTimerDelegate* curTop = getSoonestTimer();
+
+    // check if top has changed
+    if (curTop != priorTop) {
+        struct itimerspec delay = {0};
+        bool toSetTime = false;
+        // if tree is empty now, we remove poll and disarm timer
+        if (!curTop) {
+            mPollTask->removePoll(*this);
+            // setting the values to disarm timer
+            delay.it_value.tv_sec = 0;
+            delay.it_value.tv_nsec = 0;
+            toSetTime = true;
+        } else if (!priorTop || curTop->outRanks(*priorTop)) {
+            // do this first to avoid race condition, in case settime is called
+            // with too small an interval
+            mPollTask->addPoll(*this);
+            delay.it_value = curTop->getFutureTime();
+            toSetTime = true;
+        }
+        if (toSetTime) {
+            timerfd_settime(getTimerFd(), TFD_TIMER_ABSTIME, &delay, NULL);
+        }
+    }
+}
+
+// all the heap management is done in the MsgTask context.
+inline
+void LocTimerContainer::add(LocTimerDelegate& timer) {
+    struct MsgTimerPush : public LocMsg {
+        LocTimerContainer* mTimerContainer;
+        LocHeapNode* mTree;
+        LocTimerDelegate* mTimer;
+        inline MsgTimerPush(LocTimerContainer& container, LocTimerDelegate& timer) :
+            LocMsg(), mTimerContainer(&container), mTimer(&timer) {}
+        inline virtual void proc() const {
+            LocTimerDelegate* priorTop = mTimerContainer->getSoonestTimer();
+            mTimerContainer->push((LocRankable&)(*mTimer));
+            mTimerContainer->updateSoonestTime(priorTop);
+        }
+    };
+
+    mMsgTask->sendMsg(new MsgTimerPush(*this, timer));
+}
+
+// all the heap management is done in the MsgTask context.
+void LocTimerContainer::remove(LocTimerDelegate& timer) {
+    struct MsgTimerRemove : public LocMsg {
+        LocTimerContainer* mTimerContainer;
+        LocTimerDelegate* mTimer;
+        inline MsgTimerRemove(LocTimerContainer& container, LocTimerDelegate& timer) :
+            LocMsg(), mTimerContainer(&container), mTimer(&timer) {}
+        inline virtual void proc() const {
+            LocTimerDelegate* priorTop = mTimerContainer->getSoonestTimer();
+
+            // update soonest timer only if mTimer is actually removed from
+            // mTimerContainer AND mTimer is not priorTop.
+            if (priorTop == ((LocHeap*)mTimerContainer)->remove((LocRankable&)*mTimer)) {
+                // if passing in NULL, we tell updateSoonestTime to update
+                // kernel with the current top timer interval.
+                mTimerContainer->updateSoonestTime(NULL);
+            }
+            // all timers are deleted here, and only here.
+            delete mTimer;
+        }
+    };
+
+    mMsgTask->sendMsg(new MsgTimerRemove(*this, timer));
+}
+
+// all the heap management is done in the MsgTask context.
+// Upon expire, we check and continuously pop the heap until
+// the top node's timeout is in the future.
+void LocTimerContainer::expire() {
+    struct MsgTimerExpire : public LocMsg {
+        LocTimerContainer* mTimerContainer;
+        inline MsgTimerExpire(LocTimerContainer& container) :
+            LocMsg(), mTimerContainer(&container) {}
+        inline virtual void proc() const {
+            struct timespec now;
+            // get time spec of now
+            clock_gettime(CLOCK_BOOTTIME, &now);
+            LocTimerDelegate timerOfNow(now);
+            // pop everything in the heap that outRanks now, i.e. has time older than now
+            // and then call expire() on that timer.
+            for (LocTimerDelegate* timer = (LocTimerDelegate*)mTimerContainer->pop();
+                 NULL != timer;
+                 timer = mTimerContainer->popIfOutRanks(timerOfNow)) {
+                // the timer delegate obj will be deleted before the return of this call
+                timer->expire();
+            }
+            mTimerContainer->updateSoonestTime(NULL);
+        }
+    };
+
+    struct itimerspec delay = {0};
+    timerfd_settime(getTimerFd(), TFD_TIMER_ABSTIME, &delay, NULL);
+    mPollTask->removePoll(*this);
+    mMsgTask->sendMsg(new MsgTimerExpire(*this));
+}
+
+LocTimerDelegate* LocTimerContainer::popIfOutRanks(LocTimerDelegate& timer) {
+    LocTimerDelegate* poppedNode = NULL;
+    if (mTree && !timer.outRanks(*peek())) {
+        poppedNode = (LocTimerDelegate*)(pop());
+    }
+
+    return poppedNode;
+}
+
+
+/***************************LocTimerPollTask methods***************************/
+
+inline
+LocTimerPollTask::LocTimerPollTask()
+    : mFd(epoll_create(2)), mThread(new LocThread()) {
+    // before a next call returens, a thread will be created. The run() method
+    // could already be running in parallel. Also, since each of the objs
+    // creates a thread, the container will make sure that there will be only
+    // one of such obj for our timer implementation.
+    if (!mThread->start("LocTimerPollTask", this)) {
+        delete mThread;
+        mThread = NULL;
+    }
+}
+
+inline
+LocTimerPollTask::~LocTimerPollTask() {
+    // when fs is closed, epoll_wait() should fail run() should return false
+    // and the spawned thread should exit.
+    close(mFd);
+}
+
+void LocTimerPollTask::destroy() {
+    if (mThread) {
+        LocThread* thread = mThread;
+        mThread = NULL;
+        delete thread;
+    } else {
+        delete this;
+    }
+}
+
+void LocTimerPollTask::addPoll(LocTimerContainer& timerContainer) {
+    struct epoll_event ev;
+    memset(&ev, 0, sizeof(ev));
+
+    ev.events = EPOLLIN | EPOLLWAKEUP;
+    ev.data.fd = timerContainer.getTimerFd();
+    // it is important that we set this context pointer with the input
+    // timer container this is how we know which container should handle
+    // which expiration.
+    ev.data.ptr = &timerContainer;
+
+    epoll_ctl(mFd, EPOLL_CTL_ADD, timerContainer.getTimerFd(), &ev);
+}
+
+inline
+void LocTimerPollTask::removePoll(LocTimerContainer& timerContainer) {
+    epoll_ctl(mFd, EPOLL_CTL_DEL, timerContainer.getTimerFd(), NULL);
+}
+
+// The polling thread context will call this method. If run() method needs to
+// be repetitvely called, it must return true from the previous call.
+bool LocTimerPollTask::run() {
+    struct epoll_event ev[2];
+
+    // we have max 2 descriptors to poll from
+    int fds = epoll_wait(mFd, ev, 2, -1);
+
+    // we pretty much want to continually poll until the fd is closed
+    bool rerun = (fds > 0) || (errno == EINTR);
+
+    if (fds > 0) {
+        // we may have 2 events
+        for (int i = 0; i < fds; i++) {
+            // each fd has a context pointer associated with the right timer container
+            LocTimerContainer* container = (LocTimerContainer*)(ev[i].data.ptr);
+            if (container) {
+                container->expire();
+            } else {
+                epoll_ctl(mFd, EPOLL_CTL_DEL, ev[i].data.fd, NULL);
+            }
+        }
+    }
+
+    // if rerun is true, we are requesting to be scheduled again
+    return rerun;
+}
+
+/***************************LocTimerDelegate methods***************************/
+
+inline
+LocTimerDelegate::LocTimerDelegate(LocTimer& client, struct timespec& futureTime, bool wakeOnExpire)
+    : mClient(&client),
+      mLock(mClient->mLock->share()),
+      mFutureTime(futureTime),
+      mContainer(LocTimerContainer::get(wakeOnExpire)) {
+    // adding the timer into the container
+    mContainer->add(*this);
+}
+
+inline
+void LocTimerDelegate::destroyLocked() {
+    // client handle will likely be deleted soon after this
+    // method returns. Nulling this handle so that expire()
+    // won't call the callback on the dead handle any more.
+    mClient = NULL;
+
+    if (mContainer) {
+        LocTimerContainer* container = mContainer;
+        mContainer = NULL;
+        if (container) {
+            container->remove(*this);
+        }
+    } // else we do not do anything. No such *this* can be
+      // created and reached here with mContainer ever been
+      // a non NULL. So *this* must have reached the if clause
+      // once, and we want it reach there only once.
+}
+
+int LocTimerDelegate::ranks(LocRankable& rankable) {
+    int rank = -1;
+    LocTimerDelegate* timer = (LocTimerDelegate*)(&rankable);
+    if (timer) {
+        // larger time ranks lower!!!
+        // IOW, if input obj has bigger tv_sec/tv_nsec, this obj outRanks higher
+        rank = timer->mFutureTime.tv_sec - mFutureTime.tv_sec;
+        if(0 == rank)
+        {
+            //rank against tv_nsec for msec accuracy
+            rank = (int)(timer->mFutureTime.tv_nsec - mFutureTime.tv_nsec);
+        }
+    }
+    return rank;
+}
+
+inline
+void LocTimerDelegate::expire() {
+    // keeping a copy of client pointer to be safe
+    // when timeOutCallback() is called at the end of this
+    // method, *this* obj may be already deleted.
+    LocTimer* client = mClient;
+    // force a stop, which will lead to delete of this obj
+    if (client && client->stop()) {
+        // calling client callback with a pointer save on the stack
+        // only if stop() returns true, i.e. it hasn't been stopped
+        // already.
+        client->timeOutCallback();
+    }
+}
+
+
+/***************************LocTimer methods***************************/
+LocTimer::LocTimer() : mTimer(NULL), mLock(new LocSharedLock()) {
+}
+
+LocTimer::~LocTimer() {
+    stop();
+    if (mLock) {
+        mLock->drop();
+        mLock = NULL;
+    }
+}
+
+bool LocTimer::start(unsigned int timeOutInMs, bool wakeOnExpire) {
+    bool success = false;
+    mLock->lock();
+    if (!mTimer) {
+        struct timespec futureTime;
+        clock_gettime(CLOCK_BOOTTIME, &futureTime);
+        futureTime.tv_sec += timeOutInMs / 1000;
+        futureTime.tv_nsec += (timeOutInMs % 1000) * 1000000;
+        if (futureTime.tv_nsec >= 1000000000) {
+            futureTime.tv_sec += futureTime.tv_nsec / 1000000000;
+            futureTime.tv_nsec %= 1000000000;
+        }
+        mTimer = new LocTimerDelegate(*this, futureTime, wakeOnExpire);
+        // if mTimer is non 0, success should be 0; or vice versa
+        success = (NULL != mTimer);
+    }
+    mLock->unlock();
+    return success;
+}
+
+bool LocTimer::stop() {
+    bool success = false;
+    mLock->lock();
+    if (mTimer) {
+        LocTimerDelegate* timer = mTimer;
+        mTimer = NULL;
+        if (timer) {
+            timer->destroyLocked();
+            success = true;
+        }
+    }
+    mLock->unlock();
+    return success;
+}
+
+/***************************LocTimerWrapper methods***************************/
+//////////////////////////////////////////////////////////////////////////
+// This section below wraps for the C style APIs
+//////////////////////////////////////////////////////////////////////////
+class LocTimerWrapper : public LocTimer {
+    loc_timer_callback mCb;
+    void* mCallerData;
+    LocTimerWrapper* mMe;
+    static pthread_mutex_t mMutex;
+    inline ~LocTimerWrapper() { mCb = NULL; mMe = NULL; }
+public:
+    inline LocTimerWrapper(loc_timer_callback cb, void* callerData) :
+        mCb(cb), mCallerData(callerData), mMe(this) {
+    }
+    void destroy() {
+        pthread_mutex_lock(&mMutex);
+        if (NULL != mCb && this == mMe) {
+            delete this;
+        }
+        pthread_mutex_unlock(&mMutex);
+    }
+    virtual void timeOutCallback() {
+        loc_timer_callback cb = mCb;
+        void* callerData = mCallerData;
+        if (cb) {
+            cb(callerData, 0);
+        }
+        destroy();
+    }
+};
+
+pthread_mutex_t LocTimerWrapper::mMutex = PTHREAD_MUTEX_INITIALIZER;
+
+void* loc_timer_start(uint64_t msec, loc_timer_callback cb_func,
+                      void *caller_data, bool wake_on_expire)
+{
+    LocTimerWrapper* locTimerWrapper = NULL;
+
+    if (cb_func) {
+        locTimerWrapper = new LocTimerWrapper(cb_func, caller_data);
+
+        if (locTimerWrapper) {
+            locTimerWrapper->start(msec, wake_on_expire);
+        }
+    }
+
+    return locTimerWrapper;
+}
+
+void loc_timer_stop(void*&  handle)
+{
+    if (handle) {
+        LocTimerWrapper* locTimerWrapper = (LocTimerWrapper*)(handle);
+        locTimerWrapper->destroy();
+        handle = NULL;
+    }
+}
+
+//////////////////////////////////////////////////////////////////////////
+// This section above wraps for the C style APIs
+//////////////////////////////////////////////////////////////////////////
+
+#ifdef __LOC_DEBUG__
+
+double getDeltaSeconds(struct timespec from, struct timespec to) {
+    return (double)to.tv_sec + (double)to.tv_nsec / 1000000000
+        - from.tv_sec - (double)from.tv_nsec / 1000000000;
+}
+
+struct timespec getNow() {
+    struct timespec now;
+    clock_gettime(CLOCK_BOOTTIME, &now);
+    return now;
+}
+
+class LocTimerTest : public LocTimer, public LocRankable {
+    int mTimeOut;
+    const struct timespec mTimeOfBirth;
+    inline struct timespec getTimerWrapper(int timeout) {
+        struct timespec now;
+        clock_gettime(CLOCK_BOOTTIME, &now);
+        now.tv_sec += timeout;
+        return now;
+    }
+public:
+    inline LocTimerTest(int timeout) : LocTimer(), LocRankable(),
+            mTimeOut(timeout), mTimeOfBirth(getTimerWrapper(0)) {}
+    inline virtual int ranks(LocRankable& rankable) {
+        LocTimerTest* timer = dynamic_cast<LocTimerTest*>(&rankable);
+        return timer->mTimeOut - mTimeOut;
+    }
+    inline virtual void timeOutCallback() {
+        printf("timeOutCallback() - ");
+        deviation();
+    }
+    double deviation() {
+        struct timespec now = getTimerWrapper(0);
+        double delta = getDeltaSeconds(mTimeOfBirth, now);
+        printf("%lf: %lf\n", delta, delta * 100 / mTimeOut);
+        return delta / mTimeOut;
+    }
+};
+
+// For Linux command line testing:
+// compilation:
+//     g++ -D__LOC_HOST_DEBUG__ -D__LOC_DEBUG__ -g -I. -I../../../../system/core/include -o LocHeap.o LocHeap.cpp
+//     g++ -D__LOC_HOST_DEBUG__ -D__LOC_DEBUG__ -g -std=c++0x -I. -I../../../../system/core/include -lpthread -o LocThread.o LocThread.cpp
+//     g++ -D__LOC_HOST_DEBUG__ -D__LOC_DEBUG__ -g -I. -I../../../../system/core/include -o LocTimer.o LocTimer.cpp
+int main(int argc, char** argv) {
+    struct timespec timeOfStart=getNow();
+    srand(time(NULL));
+    int tries = atoi(argv[1]);
+    int checks = tries >> 3;
+    LocTimerTest** timerArray = new LocTimerTest*[tries];
+    memset(timerArray, NULL, tries);
+
+    for (int i = 0; i < tries; i++) {
+        int r = rand() % tries;
+        LocTimerTest* timer = new LocTimerTest(r);
+        if (timerArray[r]) {
+            if (!timer->stop()) {
+                printf("%lf:\n", getDeltaSeconds(timeOfStart, getNow()));
+                printf("ERRER: %dth timer, id %d, not running when it should be\n", i, r);
+                exit(0);
+            } else {
+                printf("stop() - %d\n", r);
+                delete timer;
+                timerArray[r] = NULL;
+            }
+        } else {
+            if (!timer->start(r, false)) {
+                printf("%lf:\n", getDeltaSeconds(timeOfStart, getNow()));
+                printf("ERRER: %dth timer, id %d, running when it should not be\n", i, r);
+                exit(0);
+            } else {
+                printf("stop() - %d\n", r);
+                timerArray[r] = timer;
+            }
+        }
+    }
+
+    for (int i = 0; i < tries; i++) {
+        if (timerArray[i]) {
+            if (!timerArray[i]->stop()) {
+                printf("%lf:\n", getDeltaSeconds(timeOfStart, getNow()));
+                printf("ERRER: %dth timer, not running when it should be\n", i);
+                exit(0);
+            } else {
+                printf("stop() - %d\n", i);
+                delete timerArray[i];
+                timerArray[i] = NULL;
+            }
+        }
+    }
+
+    delete[] timerArray;
+
+    return 0;
+}
+
+#endif
diff --git a/sdm845/utils/LocTimer.h b/sdm845/utils/LocTimer.h
new file mode 100644
index 0000000..c6a6362
--- /dev/null
+++ b/sdm845/utils/LocTimer.h
@@ -0,0 +1,74 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __LOC_TIMER_CPP_H__
+#define __LOC_TIMER_CPP_H__
+
+#include <stddef.h>
+#include <platform_lib_includes.h>
+
+// opaque class to provide service implementation.
+class LocTimerDelegate;
+class LocSharedLock;
+
+// LocTimer client must extend this class and implementthe callback.
+// start() / stop() methods are to arm / disarm timer.
+class LocTimer
+{
+    LocTimerDelegate* mTimer;
+    LocSharedLock* mLock;
+    // don't really want mLock to be manipulated by clients, yet LocTimer
+    // has to have a reference to the lock so that the delete of LocTimer
+    // and LocTimerDelegate can work together on their share resources.
+    friend class LocTimerDelegate;
+
+public:
+    LocTimer();
+    virtual ~LocTimer();
+
+    // timeOutInMs:  timeout delay in ms
+    // wakeOnExpire: true if to wake up CPU (if sleeping) upon timer
+    //                        expiration and notify the client.
+    //               false if to wait until next time CPU wakes up (if
+    //                        sleeping) and then notify the client.
+    // return:       true on success;
+    //               false on failure, e.g. timer is already running.
+    bool start(uint32_t timeOutInMs, bool wakeOnExpire);
+
+    // return:       true on success;
+    //               false on failure, e.g. timer is not running.
+    bool stop();
+
+    //  LocTimer client Should implement this method.
+    //  This method is used for timeout calling back to client. This method
+    //  should be short enough (eg: send a message to your own thread).
+    virtual void timeOutCallback() = 0;
+};
+
+#endif //__LOC_DELAY_H__
diff --git a/sdm845/utils/Makefile.am b/sdm845/utils/Makefile.am
new file mode 100644
index 0000000..14c3e48
--- /dev/null
+++ b/sdm845/utils/Makefile.am
@@ -0,0 +1,62 @@
+AM_CFLAGS = -Wundef \
+         -I./ \
+         $(LOCPLA_CFLAGS)
+
+AM_CPPFLAGS = -Wundef \
+         -I./ \
+         $(LOCPLA_CFLAGS)
+
+libgps_utils_so_la_h_sources = \
+        msg_q.h \
+        linked_list.h \
+        loc_cfg.h \
+        loc_log.h \
+        loc_target.h \
+        loc_timer.h \
+        MsgTask.h \
+        LocHeap.h \
+        LocThread.h \
+        LocTimer.h \
+        loc_misc_utils.h \
+        loc_nmea.h \
+        gps_extended_c.h \
+        gps_extended.h \
+        loc_gps.h
+
+libgps_utils_so_la_c_sources = \
+        linked_list.c \
+        msg_q.c \
+        loc_cfg.cpp \
+        loc_log.cpp \
+        loc_target.cpp \
+        LocHeap.cpp \
+        LocTimer.cpp \
+        LocThread.cpp \
+        MsgTask.cpp \
+        loc_misc_utils.cpp \
+        loc_nmea.cpp
+
+
+library_include_HEADERS = $(libgps_utils_so_la_h_sources)
+
+libgps_utils_so_la_SOURCES = $(libgps_utils_so_la_c_sources)
+
+if USE_GLIB
+libgps_utils_so_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+libgps_utils_so_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
+libgps_utils_so_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libgps_utils_so_la_CFLAGS = $(AM_CFLAGS)
+libgps_utils_so_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
+libgps_utils_so_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+libgps_utils_so_la_LIBADD = -lcutils -lstdc++ -llog $(LOCPLA_LIBS)
+
+#Create and Install libraries
+lib_LTLIBRARIES = libgps_utils_so.la
+library_includedir = $(pkgincludedir)
+pkgconfigdir = $(libdir)/pkgconfig
+
+pkgconfig_DATA = gps-utils.pc
+EXTRA_DIST = $(pkgconfig_DATA)
diff --git a/sdm845/utils/MsgTask.cpp b/sdm845/utils/MsgTask.cpp
new file mode 100644
index 0000000..80abeec
--- /dev/null
+++ b/sdm845/utils/MsgTask.cpp
@@ -0,0 +1,104 @@
+/* Copyright (c) 2011-2013, 2015, 2017The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_MsgTask"
+
+#include <unistd.h>
+#include <MsgTask.h>
+#include <msg_q.h>
+#include <loc_log.h>
+#include <platform_lib_includes.h>
+
+static void LocMsgDestroy(void* msg) {
+    delete (LocMsg*)msg;
+}
+
+MsgTask::MsgTask(LocThread::tCreate tCreator,
+                 const char* threadName, bool joinable) :
+    mQ(msg_q_init2()), mThread(new LocThread()) {
+    if (!mThread->start(tCreator, threadName, this, joinable)) {
+        delete mThread;
+        mThread = NULL;
+    }
+}
+
+MsgTask::MsgTask(const char* threadName, bool joinable) :
+    mQ(msg_q_init2()), mThread(new LocThread()) {
+    if (!mThread->start(threadName, this, joinable)) {
+        delete mThread;
+        mThread = NULL;
+    }
+}
+
+MsgTask::~MsgTask() {
+    msg_q_flush((void*)mQ);
+    msg_q_destroy((void**)&mQ);
+}
+
+void MsgTask::destroy() {
+    LocThread* thread = mThread;
+    msg_q_unblock((void*)mQ);
+    if (thread) {
+        mThread = NULL;
+        delete thread;
+    } else {
+        delete this;
+    }
+}
+
+void MsgTask::sendMsg(const LocMsg* msg) const {
+    if (msg) {
+        msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
+    } else {
+        LOC_LOGE("%s: msg is NULL", __func__);
+    }
+}
+
+void MsgTask::prerun() {
+    // make sure we do not run in background scheduling group
+     platform_lib_abstraction_set_sched_policy(platform_lib_abstraction_gettid(), PLA_SP_FOREGROUND);
+}
+
+bool MsgTask::run() {
+    LocMsg* msg;
+    msq_q_err_type result = msg_q_rcv((void*)mQ, (void **)&msg);
+    if (eMSG_Q_SUCCESS != result) {
+        LOC_LOGE("%s:%d] fail receiving msg: %s\n", __func__, __LINE__,
+                 loc_get_msg_q_status(result));
+        return false;
+    }
+
+    msg->log();
+    // there is where each individual msg handling is invoked
+    msg->proc();
+
+    delete msg;
+
+    return true;
+}
diff --git a/sdm845/utils/MsgTask.h b/sdm845/utils/MsgTask.h
new file mode 100644
index 0000000..9eb1f56
--- /dev/null
+++ b/sdm845/utils/MsgTask.h
@@ -0,0 +1,67 @@
+/* Copyright (c) 2011-2013,2015 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __MSG_TASK__
+#define __MSG_TASK__
+
+#include <LocThread.h>
+
+struct LocMsg {
+    inline LocMsg() {}
+    inline virtual ~LocMsg() {}
+    virtual void proc() const = 0;
+    inline virtual void log() const {}
+};
+
+class MsgTask : public LocRunnable {
+    const void* mQ;
+    LocThread* mThread;
+    friend class LocThreadDelegate;
+protected:
+    virtual ~MsgTask();
+public:
+    MsgTask(LocThread::tCreate tCreator, const char* threadName = NULL, bool joinable = true);
+    MsgTask(const char* threadName = NULL, bool joinable = true);
+    // this obj will be deleted once thread is deleted
+    void destroy();
+    void sendMsg(const LocMsg* msg) const;
+    // Overrides of LocRunnable methods
+    // This method will be repeated called until it returns false; or
+    // until thread is stopped.
+    virtual bool run();
+
+    // The method to be run before thread loop (conditionally repeatedly)
+    // calls run()
+    virtual void prerun();
+
+    // The method to be run after thread loop (conditionally repeatedly)
+    // calls run()
+    inline virtual void postrun() {}
+};
+
+#endif //__MSG_TASK__
diff --git a/sdm845/utils/configure.ac b/sdm845/utils/configure.ac
new file mode 100644
index 0000000..a7ab9b4
--- /dev/null
+++ b/sdm845/utils/configure.ac
@@ -0,0 +1,59 @@
+# configure.ac -- Autoconf script for gps gps-utils
+#
+# Process this file with autoconf to produce a configure script
+
+# Requires autoconf tool later than 2.61
+AC_PREREQ(2.61)
+# Initialize the gps gps-utils package version 1.0.0
+AC_INIT([gps-utils],1.0.0)
+# Does not strictly follow GNU Coding standards
+AM_INIT_AUTOMAKE([foreign])
+# Disables auto rebuilding of configure, Makefile.ins
+AM_MAINTAINER_MODE
+# Verifies the --srcdir is correct by checking for the path
+AC_CONFIG_SRCDIR([Makefile.am])
+# defines some macros variable to be included by source
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+PKG_CHECK_MODULES([LOCPLA], [loc-pla])
+AC_SUBST([LOCPLA_CFLAGS])
+AC_SUBST([LOCPLA_LIBS])
+
+AC_ARG_WITH([glib],
+      AC_HELP_STRING([--with-glib],
+         [enable glib, building HLOS systems which use glib]))
+
+if (test "x${with_glib}" = "xyes"); then
+        AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
+        PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GThread >= 2.16 is required))
+        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GLib >= 2.16 is required))
+        GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
+        GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
+
+        AC_SUBST(GLIB_CFLAGS)
+        AC_SUBST(GLIB_LIBS)
+fi
+
+AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
+
+AC_CONFIG_FILES([ \
+        Makefile \
+        gps-utils.pc
+        ])
+
+AC_OUTPUT
diff --git a/sdm845/utils/gps-utils.pc.in b/sdm845/utils/gps-utils.pc.in
new file mode 100644
index 0000000..3ed3d90
--- /dev/null
+++ b/sdm845/utils/gps-utils.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: gps-utils
+Description: QTI GPS Location utils
+Version: @VERSION
+Libs: -L${libdir} -lgps_utils_so
+Cflags: -I${includedir}/gps-utils
diff --git a/sdm845/utils/gps_extended.h b/sdm845/utils/gps_extended.h
new file mode 100644
index 0000000..dc6ad1e
--- /dev/null
+++ b/sdm845/utils/gps_extended.h
@@ -0,0 +1,106 @@
+/* Copyright (c) 2013-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef GPS_EXTENDED_H
+#define GPS_EXTENDED_H
+
+/**
+ * @file
+ * @brief C++ declarations for GPS types
+ */
+
+#include <gps_extended_c.h>
+#if defined(USE_GLIB) || defined(OFF_TARGET)
+#include <string.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+
+struct LocPosMode
+{
+    LocPositionMode mode;
+    LocGpsPositionRecurrence recurrence;
+    uint32_t min_interval;
+    uint32_t preferred_accuracy;
+    uint32_t preferred_time;
+    bool share_position;
+    char credentials[14];
+    char provider[8];
+    LocPosMode(LocPositionMode m, LocGpsPositionRecurrence recr,
+               uint32_t gap, uint32_t accu, uint32_t time,
+               bool sp, const char* cred, const char* prov) :
+        mode(m), recurrence(recr),
+        min_interval(gap < GPS_MIN_POSSIBLE_FIX_INTERVAL_MS ?
+                     GPS_MIN_POSSIBLE_FIX_INTERVAL_MS : gap),
+        preferred_accuracy(accu), preferred_time(time),
+        share_position(sp) {
+        memset(credentials, 0, sizeof(credentials));
+        memset(provider, 0, sizeof(provider));
+        if (NULL != cred) {
+            memcpy(credentials, cred, sizeof(credentials)-1);
+        }
+        if (NULL != prov) {
+            memcpy(provider, prov, sizeof(provider)-1);
+        }
+    }
+
+    inline LocPosMode() :
+        mode(LOC_POSITION_MODE_MS_BASED),
+        recurrence(LOC_GPS_POSITION_RECURRENCE_PERIODIC),
+        min_interval(GPS_DEFAULT_FIX_INTERVAL_MS),
+        preferred_accuracy(50), preferred_time(120000),
+        share_position(true) {
+        memset(credentials, 0, sizeof(credentials));
+        memset(provider, 0, sizeof(provider));
+    }
+
+    inline bool equals(const LocPosMode &anotherMode) const
+    {
+        return anotherMode.mode == mode &&
+            anotherMode.recurrence == recurrence &&
+            anotherMode.min_interval == min_interval &&
+            anotherMode.preferred_accuracy == preferred_accuracy &&
+            anotherMode.preferred_time == preferred_time &&
+            !strncmp(anotherMode.credentials, credentials, sizeof(credentials)-1) &&
+            !strncmp(anotherMode.provider, provider, sizeof(provider)-1);
+    }
+
+    void logv() const;
+};
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* GPS_EXTENDED_H */
+
diff --git a/sdm845/utils/gps_extended_c.h b/sdm845/utils/gps_extended_c.h
new file mode 100644
index 0000000..b4d14b8
--- /dev/null
+++ b/sdm845/utils/gps_extended_c.h
@@ -0,0 +1,1172 @@
+/* Copyright (c) 2013-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef GPS_EXTENDED_C_H
+#define GPS_EXTENDED_C_H
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <loc_gps.h>
+#include <LocationAPI.h>
+#include <time.h>
+
+/**
+ * @file
+ * @brief C++ declarations for GPS types
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** Location has valid source information. */
+#define LOCATION_HAS_SOURCE_INFO   0x0020
+/** LocGpsLocation has valid "is indoor?" flag */
+#define LOC_GPS_LOCATION_HAS_IS_INDOOR   0x0040
+/** LocGpsLocation has valid floor number */
+#define LOC_GPS_LOCATION_HAS_FLOOR_NUMBER   0x0080
+/** LocGpsLocation has valid map URL*/
+#define LOC_GPS_LOCATION_HAS_MAP_URL   0x0100
+/** LocGpsLocation has valid map index */
+#define LOC_GPS_LOCATION_HAS_MAP_INDEX   0x0200
+
+/** Sizes for indoor fields */
+#define GPS_LOCATION_MAP_URL_SIZE 400
+#define GPS_LOCATION_MAP_INDEX_SIZE 16
+
+/** Position source is ULP */
+#define ULP_LOCATION_IS_FROM_HYBRID   0x0001
+/** Position source is GNSS only */
+#define ULP_LOCATION_IS_FROM_GNSS     0x0002
+/** Position source is ZPP only */
+#define ULP_LOCATION_IS_FROM_ZPP      0x0004
+/** Position is from a Geofence Breach Event */
+#define ULP_LOCATION_IS_FROM_GEOFENCE 0X0008
+/** Position is from Hardware FLP */
+#define ULP_LOCATION_IS_FROM_HW_FLP   0x0010
+/** Position is from NLP */
+#define ULP_LOCATION_IS_FROM_NLP      0x0020
+/** Position is from PIP */
+#define ULP_LOCATION_IS_FROM_PIP      0x0040
+/** Position is from external DR solution*/
+#define ULP_LOCATION_IS_FROM_EXT_DR   0X0080
+/** Raw GNSS position fixes */
+#define ULP_LOCATION_IS_FROM_GNSS_RAW   0X0100
+
+typedef uint32_t LocSvInfoSource;
+/** SVinfo source is GNSS/DR */
+#define ULP_SVINFO_IS_FROM_GNSS       ((LocSvInfoSource)0x0001)
+/** Raw SVinfo from GNSS */
+#define ULP_SVINFO_IS_FROM_DR         ((LocSvInfoSource)0x0002)
+
+#define ULP_MIN_INTERVAL_INVALID 0xffffffff
+#define ULP_MAX_NMEA_STRING_SIZE 201
+
+/*Emergency SUPL*/
+#define LOC_GPS_NI_TYPE_EMERGENCY_SUPL    4
+
+#define LOC_AGPS_CERTIFICATE_MAX_LENGTH 2000
+#define LOC_AGPS_CERTIFICATE_MAX_SLOTS 10
+
+typedef uint32_t LocPosTechMask;
+#define LOC_POS_TECH_MASK_DEFAULT ((LocPosTechMask)0x00000000)
+#define LOC_POS_TECH_MASK_SATELLITE ((LocPosTechMask)0x00000001)
+#define LOC_POS_TECH_MASK_CELLID ((LocPosTechMask)0x00000002)
+#define LOC_POS_TECH_MASK_WIFI ((LocPosTechMask)0x00000004)
+#define LOC_POS_TECH_MASK_SENSORS ((LocPosTechMask)0x00000008)
+#define LOC_POS_TECH_MASK_REFERENCE_LOCATION ((LocPosTechMask)0x00000010)
+#define LOC_POS_TECH_MASK_INJECTED_COARSE_POSITION ((LocPosTechMask)0x00000020)
+#define LOC_POS_TECH_MASK_AFLT ((LocPosTechMask)0x00000040)
+#define LOC_POS_TECH_MASK_HYBRID ((LocPosTechMask)0x00000080)
+
+enum loc_registration_mask_status {
+    LOC_REGISTRATION_MASK_ENABLED,
+    LOC_REGISTRATION_MASK_DISABLED,
+    LOC_REGISTRATION_MASK_SET
+};
+
+typedef enum {
+    LOC_SUPPORTED_FEATURE_ODCPI_2_V02 = 0, /**<  Support ODCPI version 2 feature  */
+    LOC_SUPPORTED_FEATURE_WIFI_AP_DATA_INJECT_2_V02 /**<  Support Wifi AP data inject version 2 feature  */
+} loc_supported_feature_enum;
+
+typedef struct {
+    /** set to sizeof(UlpLocation) */
+    size_t          size;
+    LocGpsLocation     gpsLocation;
+    /* Provider indicator for HYBRID or GPS */
+    uint16_t        position_source;
+    LocPosTechMask  tech_mask;
+    /*allows HAL to pass additional information related to the location */
+    int             rawDataSize;         /* in # of bytes */
+    void            * rawData;
+    bool            is_indoor;
+    float           floor_number;
+    char            map_url[GPS_LOCATION_MAP_URL_SIZE];
+    unsigned char   map_index[GPS_LOCATION_MAP_INDEX_SIZE];
+} UlpLocation;
+
+typedef struct {
+    /** set to sizeof(UlpNmea) */
+    size_t          size;
+    char            nmea_str[ULP_MAX_NMEA_STRING_SIZE];
+    unsigned int    len;
+} UlpNmea;
+
+
+/** AGPS type */
+typedef int16_t AGpsExtType;
+#define LOC_AGPS_TYPE_INVALID       -1
+#define LOC_AGPS_TYPE_ANY           0
+#define LOC_AGPS_TYPE_SUPL          1
+#define LOC_AGPS_TYPE_C2K           2
+#define LOC_AGPS_TYPE_WWAN_ANY      3
+#define LOC_AGPS_TYPE_WIFI          4
+#define LOC_AGPS_TYPE_SUPL_ES       5
+
+/** SSID length */
+#define SSID_BUF_SIZE (32+1)
+
+typedef int16_t AGpsBearerType;
+#define AGPS_APN_BEARER_INVALID    -1
+#define AGPS_APN_BEARER_IPV4        0
+#define AGPS_APN_BEARER_IPV6        1
+#define AGPS_APN_BEARER_IPV4V6      2
+
+/** GPS extended callback structure. */
+typedef struct {
+    /** set to sizeof(LocGpsCallbacks) */
+    size_t      size;
+    loc_gps_set_capabilities set_capabilities_cb;
+    loc_gps_acquire_wakelock acquire_wakelock_cb;
+    loc_gps_release_wakelock release_wakelock_cb;
+    loc_gps_create_thread create_thread_cb;
+    loc_gps_request_utc_time request_utc_time_cb;
+} GpsExtCallbacks;
+
+/** Callback to report the xtra server url to the client.
+ *  The client should use this url when downloading xtra unless overwritten
+ *  in the gps.conf file
+ */
+typedef void (* report_xtra_server)(const char*, const char*, const char*);
+
+/** Callback structure for the XTRA interface. */
+typedef struct {
+    loc_gps_xtra_download_request download_request_cb;
+    loc_gps_create_thread create_thread_cb;
+    report_xtra_server report_xtra_server_cb;
+} GpsXtraExtCallbacks;
+
+/** Represents the status of AGPS. */
+typedef struct {
+    /** set to sizeof(AGpsExtStatus) */
+    size_t          size;
+
+    AGpsExtType type;
+    LocAGpsStatusValue status;
+    uint32_t        ipv4_addr;
+    struct sockaddr_storage addr;
+    char            ssid[SSID_BUF_SIZE];
+    char            password[SSID_BUF_SIZE];
+} AGpsExtStatus;
+
+/** Callback with AGPS status information.
+ *  Can only be called from a thread created by create_thread_cb.
+ */
+typedef void (* agps_status_extended)(AGpsExtStatus* status);
+
+/** Callback structure for the AGPS interface. */
+typedef struct {
+    agps_status_extended status_cb;
+    loc_gps_create_thread create_thread_cb;
+} AGpsExtCallbacks;
+
+
+typedef void (*loc_ni_notify_callback)(LocGpsNiNotification *notification, bool esEnalbed);
+/** GPS NI callback structure. */
+typedef struct
+{
+    /**
+     * Sends the notification request from HAL to GPSLocationProvider.
+     */
+    loc_ni_notify_callback notify_cb;
+} GpsNiExtCallbacks;
+
+typedef enum loc_server_type {
+    LOC_AGPS_CDMA_PDE_SERVER,
+    LOC_AGPS_CUSTOM_PDE_SERVER,
+    LOC_AGPS_MPC_SERVER,
+    LOC_AGPS_SUPL_SERVER
+} LocServerType;
+
+typedef enum loc_position_mode_type {
+    LOC_POSITION_MODE_INVALID = -1,
+    LOC_POSITION_MODE_STANDALONE = 0,
+    LOC_POSITION_MODE_MS_BASED,
+    LOC_POSITION_MODE_MS_ASSISTED,
+    LOC_POSITION_MODE_RESERVED_1,
+    LOC_POSITION_MODE_RESERVED_2,
+    LOC_POSITION_MODE_RESERVED_3,
+    LOC_POSITION_MODE_RESERVED_4,
+    LOC_POSITION_MODE_RESERVED_5
+
+} LocPositionMode;
+
+/**
+ * @brief Minimum allowed value for fix interval.
+ *
+ * This value is a sanity limit in GPS framework. The hardware has own internal
+ * limits that may not match this value
+ *
+ * @sa GPS_DEFAULT_FIX_INTERVAL_MS
+ */
+
+#define GPS_MIN_POSSIBLE_FIX_INTERVAL_MS 100
+/**
+ * @brief Default value for fix interval.
+ *
+ * This value is used by default whenever appropriate.
+ *
+ * @sa GPS_MIN_POSSIBLE_FIX_INTERVAL_MS
+ */
+#define GPS_DEFAULT_FIX_INTERVAL_MS      1000
+
+/** Flags to indicate which values are valid in a GpsLocationExtended. */
+typedef uint16_t GpsLocationExtendedFlags;
+/** GpsLocationExtended has valid pdop, hdop, vdop. */
+#define GPS_LOCATION_EXTENDED_HAS_DOP 0x0001
+/** GpsLocationExtended has valid altitude mean sea level. */
+#define GPS_LOCATION_EXTENDED_HAS_ALTITUDE_MEAN_SEA_LEVEL 0x0002
+/** UlpLocation has valid magnetic deviation. */
+#define GPS_LOCATION_EXTENDED_HAS_MAG_DEV 0x0004
+/** UlpLocation has valid mode indicator. */
+#define GPS_LOCATION_EXTENDED_HAS_MODE_IND 0x0008
+/** GpsLocationExtended has valid vertical uncertainty */
+#define GPS_LOCATION_EXTENDED_HAS_VERT_UNC 0x0010
+/** GpsLocationExtended has valid speed uncertainty */
+#define GPS_LOCATION_EXTENDED_HAS_SPEED_UNC 0x0020
+/** GpsLocationExtended has valid heading uncertainty */
+#define GPS_LOCATION_EXTENDED_HAS_BEARING_UNC 0x0040
+/** GpsLocationExtended has valid horizontal reliability */
+#define GPS_LOCATION_EXTENDED_HAS_HOR_RELIABILITY 0x0080
+/** GpsLocationExtended has valid vertical reliability */
+#define GPS_LOCATION_EXTENDED_HAS_VERT_RELIABILITY 0x0100
+/** GpsLocationExtended has valid Horizontal Elliptical Uncertainty (Semi-Major Axis) */
+#define GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MAJOR 0x0200
+/** GpsLocationExtended has valid Horizontal Elliptical Uncertainty (Semi-Minor Axis) */
+#define GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MINOR 0x0400
+/** GpsLocationExtended has valid Elliptical Horizontal Uncertainty Azimuth */
+#define GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_AZIMUTH 0x0800
+/** GpsLocationExtended has valid gnss sv used in position data */
+#define GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA 0x1000
+/** GpsLocationExtended has valid navSolutionMask */
+#define GPS_LOCATION_EXTENDED_HAS_NAV_SOLUTION_MASK 0x2000
+/** GpsLocationExtended has valid LocPosTechMask */
+#define GPS_LOCATION_EXTENDED_HAS_POS_TECH_MASK   0x4000
+
+typedef uint32_t LocNavSolutionMask;
+/* Bitmask to specify whether SBAS ionospheric correction is used  */
+#define LOC_NAV_MASK_SBAS_CORRECTION_IONO ((LocNavSolutionMask)0x0001)
+/* Bitmask to specify whether SBAS fast correction is used  */
+#define LOC_NAV_MASK_SBAS_CORRECTION_FAST ((LocNavSolutionMask)0x0002)
+/**<  Bitmask to specify whether SBAS long-tem correction is used  */
+#define LOC_NAV_MASK_SBAS_CORRECTION_LONG ((LocNavSolutionMask)0x0004)
+/**<  Bitmask to specify whether SBAS integrity information is used  */
+#define LOC_NAV_MASK_SBAS_INTEGRITY ((LocNavSolutionMask)0x0008)
+
+/** GPS PRN Range */
+#define GPS_SV_PRN_MIN      1
+#define GPS_SV_PRN_MAX      32
+#define GLO_SV_PRN_MIN      65
+#define GLO_SV_PRN_MAX      96
+#define BDS_SV_PRN_MIN      201
+#define BDS_SV_PRN_MAX      235
+#define GAL_SV_PRN_MIN      301
+#define GAL_SV_PRN_MAX      336
+
+typedef uint32_t LocPosTechMask;
+#define LOC_POS_TECH_MASK_DEFAULT ((LocPosTechMask)0x00000000)
+#define LOC_POS_TECH_MASK_SATELLITE ((LocPosTechMask)0x00000001)
+#define LOC_POS_TECH_MASK_CELLID ((LocPosTechMask)0x00000002)
+#define LOC_POS_TECH_MASK_WIFI ((LocPosTechMask)0x00000004)
+#define LOC_POS_TECH_MASK_SENSORS ((LocPosTechMask)0x00000008)
+#define LOC_POS_TECH_MASK_REFERENCE_LOCATION ((LocPosTechMask)0x00000010)
+#define LOC_POS_TECH_MASK_INJECTED_COARSE_POSITION ((LocPosTechMask)0x00000020)
+#define LOC_POS_TECH_MASK_AFLT ((LocPosTechMask)0x00000040)
+#define LOC_POS_TECH_MASK_HYBRID ((LocPosTechMask)0x00000080)
+
+typedef enum {
+    LOC_RELIABILITY_NOT_SET = 0,
+    LOC_RELIABILITY_VERY_LOW = 1,
+    LOC_RELIABILITY_LOW = 2,
+    LOC_RELIABILITY_MEDIUM = 3,
+    LOC_RELIABILITY_HIGH = 4
+}LocReliability;
+
+typedef struct {
+    struct timespec apTimeStamp;
+    /*boottime received from pps-ktimer*/
+    float apTimeStampUncertaintyMs;
+    /* timestamp uncertainty in milli seconds */
+}Gnss_ApTimeStampStructType;
+
+typedef struct {
+    uint64_t gps_sv_used_ids_mask;
+    uint64_t glo_sv_used_ids_mask;
+    uint64_t gal_sv_used_ids_mask;
+    uint64_t bds_sv_used_ids_mask;
+} GnssSvUsedInPosition;
+
+/** Represents gps location extended. */
+typedef struct {
+    /** set to sizeof(GpsLocationExtended) */
+    size_t          size;
+    /** Contains GpsLocationExtendedFlags bits. */
+    uint16_t        flags;
+    /** Contains the Altitude wrt mean sea level */
+    float           altitudeMeanSeaLevel;
+    /** Contains Position Dilusion of Precision. */
+    float           pdop;
+    /** Contains Horizontal Dilusion of Precision. */
+    float           hdop;
+    /** Contains Vertical Dilusion of Precision. */
+    float           vdop;
+    /** Contains Magnetic Deviation. */
+    float           magneticDeviation;
+    /** vertical uncertainty in meters */
+    float           vert_unc;
+    /** speed uncertainty in m/s */
+    float           speed_unc;
+    /** heading uncertainty in degrees (0 to 359.999) */
+    float           bearing_unc;
+    /** horizontal reliability. */
+    LocReliability  horizontal_reliability;
+    /** vertical reliability. */
+    LocReliability  vertical_reliability;
+    /*  Horizontal Elliptical Uncertainty (Semi-Major Axis) */
+    float           horUncEllipseSemiMajor;
+    /*  Horizontal Elliptical Uncertainty (Semi-Minor Axis) */
+    float           horUncEllipseSemiMinor;
+    /*    Elliptical Horizontal Uncertainty Azimuth */
+    float           horUncEllipseOrientAzimuth;
+
+    Gnss_ApTimeStampStructType               timeStamp;
+    /** Gnss sv used in position data */
+    GnssSvUsedInPosition gnss_sv_used_ids;
+    /** Nav solution mask to indicate sbas corrections */
+    LocNavSolutionMask  navSolutionMask;
+    /** Position technology used in computing this fix */
+    LocPosTechMask tech_mask;
+} GpsLocationExtended;
+
+enum loc_sess_status {
+    LOC_SESS_SUCCESS,
+    LOC_SESS_INTERMEDIATE,
+    LOC_SESS_FAILURE
+};
+
+// Nmea sentence types mask
+typedef uint32_t NmeaSentenceTypesMask;
+#define LOC_NMEA_MASK_GGA_V02   ((NmeaSentenceTypesMask)0x00000001) /**<  Enable GGA type  */
+#define LOC_NMEA_MASK_RMC_V02   ((NmeaSentenceTypesMask)0x00000002) /**<  Enable RMC type  */
+#define LOC_NMEA_MASK_GSV_V02   ((NmeaSentenceTypesMask)0x00000004) /**<  Enable GSV type  */
+#define LOC_NMEA_MASK_GSA_V02   ((NmeaSentenceTypesMask)0x00000008) /**<  Enable GSA type  */
+#define LOC_NMEA_MASK_VTG_V02   ((NmeaSentenceTypesMask)0x00000010) /**<  Enable VTG type  */
+#define LOC_NMEA_MASK_PQXFI_V02 ((NmeaSentenceTypesMask)0x00000020) /**<  Enable PQXFI type  */
+#define LOC_NMEA_MASK_PSTIS_V02 ((NmeaSentenceTypesMask)0x00000040) /**<  Enable PSTIS type  */
+#define LOC_NMEA_MASK_GLGSV_V02 ((NmeaSentenceTypesMask)0x00000080) /**<  Enable GLGSV type  */
+#define LOC_NMEA_MASK_GNGSA_V02 ((NmeaSentenceTypesMask)0x00000100) /**<  Enable GNGSA type  */
+#define LOC_NMEA_MASK_GNGNS_V02 ((NmeaSentenceTypesMask)0x00000200) /**<  Enable GNGNS type  */
+#define LOC_NMEA_MASK_GARMC_V02 ((NmeaSentenceTypesMask)0x00000400) /**<  Enable GARMC type  */
+#define LOC_NMEA_MASK_GAGSV_V02 ((NmeaSentenceTypesMask)0x00000800) /**<  Enable GAGSV type  */
+#define LOC_NMEA_MASK_GAGSA_V02 ((NmeaSentenceTypesMask)0x00001000) /**<  Enable GAGSA type  */
+#define LOC_NMEA_MASK_GAVTG_V02 ((NmeaSentenceTypesMask)0x00002000) /**<  Enable GAVTG type  */
+#define LOC_NMEA_MASK_GAGGA_V02 ((NmeaSentenceTypesMask)0x00004000) /**<  Enable GAGGA type  */
+#define LOC_NMEA_MASK_PQGSA_V02 ((NmeaSentenceTypesMask)0x00008000) /**<  Enable PQGSA type  */
+#define LOC_NMEA_MASK_PQGSV_V02 ((NmeaSentenceTypesMask)0x00010000) /**<  Enable PQGSV type  */
+#define LOC_NMEA_MASK_DEBUG_V02 ((NmeaSentenceTypesMask)0x00020000) /**<  Enable DEBUG type  */
+
+#define LOC_NMEA_ALL_SUPPORTED_MASK  (LOC_NMEA_MASK_GGA_V02 | LOC_NMEA_MASK_RMC_V02 | \
+              LOC_NMEA_MASK_GSV_V02 | LOC_NMEA_MASK_GSA_V02 | LOC_NMEA_MASK_VTG_V02 | \
+        LOC_NMEA_MASK_PQXFI_V02 | LOC_NMEA_MASK_PSTIS_V02 | LOC_NMEA_MASK_GLGSV_V02 | \
+        LOC_NMEA_MASK_GNGSA_V02 | LOC_NMEA_MASK_GNGNS_V02 | LOC_NMEA_MASK_GARMC_V02 | \
+        LOC_NMEA_MASK_GAGSV_V02 | LOC_NMEA_MASK_GAGSA_V02 | LOC_NMEA_MASK_GAVTG_V02 | \
+        LOC_NMEA_MASK_GAGGA_V02 | LOC_NMEA_MASK_PQGSA_V02 | LOC_NMEA_MASK_PQGSV_V02 | \
+        LOC_NMEA_MASK_DEBUG_V02 )
+
+typedef enum {
+  LOC_ENG_IF_REQUEST_SENDER_ID_QUIPC = 0,
+  LOC_ENG_IF_REQUEST_SENDER_ID_MSAPM,
+  LOC_ENG_IF_REQUEST_SENDER_ID_MSAPU,
+  LOC_ENG_IF_REQUEST_SENDER_ID_GPSONE_DAEMON,
+  LOC_ENG_IF_REQUEST_SENDER_ID_MODEM,
+  LOC_ENG_IF_REQUEST_SENDER_ID_UNKNOWN
+} loc_if_req_sender_id_e_type;
+
+
+#define smaller_of(a, b) (((a) > (b)) ? (b) : (a))
+#define MAX_APN_LEN 100
+
+// This will be overridden by the individual adapters
+// if necessary.
+#define DEFAULT_IMPL(rtv)                                     \
+{                                                             \
+    LOC_LOGD("%s: default implementation invoked", __func__); \
+    return rtv;                                               \
+}
+
+enum loc_api_adapter_err {
+    LOC_API_ADAPTER_ERR_SUCCESS             = 0,
+    LOC_API_ADAPTER_ERR_GENERAL_FAILURE     = 1,
+    LOC_API_ADAPTER_ERR_UNSUPPORTED         = 2,
+    LOC_API_ADAPTER_ERR_INVALID_HANDLE      = 4,
+    LOC_API_ADAPTER_ERR_INVALID_PARAMETER   = 5,
+    LOC_API_ADAPTER_ERR_ENGINE_BUSY         = 6,
+    LOC_API_ADAPTER_ERR_PHONE_OFFLINE       = 7,
+    LOC_API_ADAPTER_ERR_TIMEOUT             = 8,
+    LOC_API_ADAPTER_ERR_SERVICE_NOT_PRESENT = 9,
+    LOC_API_ADAPTER_ERR_INTERNAL            = 10,
+
+    /* equating engine down to phone offline, as they are the same errror */
+    LOC_API_ADAPTER_ERR_ENGINE_DOWN         = LOC_API_ADAPTER_ERR_PHONE_OFFLINE,
+    LOC_API_ADAPTER_ERR_FAILURE             = 101,
+    LOC_API_ADAPTER_ERR_UNKNOWN
+};
+
+enum loc_api_adapter_event_index {
+    LOC_API_ADAPTER_REPORT_POSITION = 0,               // Position report comes in loc_parsed_position_s_type
+    LOC_API_ADAPTER_REPORT_SATELLITE,                  // Satellite in view report
+    LOC_API_ADAPTER_REPORT_NMEA_1HZ,                   // NMEA report at 1HZ rate
+    LOC_API_ADAPTER_REPORT_NMEA_POSITION,              // NMEA report at position report rate
+    LOC_API_ADAPTER_REQUEST_NI_NOTIFY_VERIFY,          // NI notification/verification request
+    LOC_API_ADAPTER_REQUEST_ASSISTANCE_DATA,           // Assistance data, eg: time, predicted orbits request
+    LOC_API_ADAPTER_REQUEST_LOCATION_SERVER,           // Request for location server
+    LOC_API_ADAPTER_REPORT_IOCTL,                      // Callback report for loc_ioctl
+    LOC_API_ADAPTER_REPORT_STATUS,                     // Misc status report: eg, engine state
+    LOC_API_ADAPTER_REQUEST_WIFI,                      //
+    LOC_API_ADAPTER_SENSOR_STATUS,                     //
+    LOC_API_ADAPTER_REQUEST_TIME_SYNC,                 //
+    LOC_API_ADAPTER_REPORT_SPI,                        //
+    LOC_API_ADAPTER_REPORT_NI_GEOFENCE,                //
+    LOC_API_ADAPTER_GEOFENCE_GEN_ALERT,                //
+    LOC_API_ADAPTER_REPORT_GENFENCE_BREACH,            //
+    LOC_API_ADAPTER_PEDOMETER_CTRL,                    //
+    LOC_API_ADAPTER_MOTION_CTRL,                       //
+    LOC_API_ADAPTER_REQUEST_WIFI_AP_DATA,              // Wifi ap data
+    LOC_API_ADAPTER_BATCH_FULL,                        // Batching on full
+    LOC_API_ADAPTER_BATCHED_POSITION_REPORT,           // Batching on fix
+    LOC_API_ADAPTER_BATCHED_GENFENCE_BREACH_REPORT,    //
+    LOC_API_ADAPTER_GNSS_MEASUREMENT_REPORT,          //GNSS Measurement Report
+    LOC_API_ADAPTER_GNSS_SV_POLYNOMIAL_REPORT,        //GNSS SV Polynomial Report
+    LOC_API_ADAPTER_GDT_UPLOAD_BEGIN_REQ,              // GDT upload start request
+    LOC_API_ADAPTER_GDT_UPLOAD_END_REQ,                // GDT upload end request
+    LOC_API_ADAPTER_GNSS_MEASUREMENT,                  // GNSS Measurement report
+    LOC_API_ADAPTER_REQUEST_TIMEZONE,                  // Timezone injection request
+    LOC_API_ADAPTER_REPORT_GENFENCE_DWELL_REPORT,      // Geofence dwell report
+    LOC_API_ADAPTER_REQUEST_SRN_DATA,                  // request srn data from AP
+    LOC_API_ADAPTER_EVENT_MAX
+};
+
+#define LOC_API_ADAPTER_BIT_PARSED_POSITION_REPORT           (1<<LOC_API_ADAPTER_REPORT_POSITION)
+#define LOC_API_ADAPTER_BIT_SATELLITE_REPORT                 (1<<LOC_API_ADAPTER_REPORT_SATELLITE)
+#define LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT                  (1<<LOC_API_ADAPTER_REPORT_NMEA_1HZ)
+#define LOC_API_ADAPTER_BIT_NMEA_POSITION_REPORT             (1<<LOC_API_ADAPTER_REPORT_NMEA_POSITION)
+#define LOC_API_ADAPTER_BIT_NI_NOTIFY_VERIFY_REQUEST         (1<<LOC_API_ADAPTER_REQUEST_NI_NOTIFY_VERIFY)
+#define LOC_API_ADAPTER_BIT_ASSISTANCE_DATA_REQUEST          (1<<LOC_API_ADAPTER_REQUEST_ASSISTANCE_DATA)
+#define LOC_API_ADAPTER_BIT_LOCATION_SERVER_REQUEST          (1<<LOC_API_ADAPTER_REQUEST_LOCATION_SERVER)
+#define LOC_API_ADAPTER_BIT_IOCTL_REPORT                     (1<<LOC_API_ADAPTER_REPORT_IOCTL)
+#define LOC_API_ADAPTER_BIT_STATUS_REPORT                    (1<<LOC_API_ADAPTER_REPORT_STATUS)
+#define LOC_API_ADAPTER_BIT_REQUEST_WIFI                     (1<<LOC_API_ADAPTER_REQUEST_WIFI)
+#define LOC_API_ADAPTER_BIT_SENSOR_STATUS                    (1<<LOC_API_ADAPTER_SENSOR_STATUS)
+#define LOC_API_ADAPTER_BIT_REQUEST_TIME_SYNC                (1<<LOC_API_ADAPTER_REQUEST_TIME_SYNC)
+#define LOC_API_ADAPTER_BIT_REPORT_SPI                       (1<<LOC_API_ADAPTER_REPORT_SPI)
+#define LOC_API_ADAPTER_BIT_REPORT_NI_GEOFENCE               (1<<LOC_API_ADAPTER_REPORT_NI_GEOFENCE)
+#define LOC_API_ADAPTER_BIT_GEOFENCE_GEN_ALERT               (1<<LOC_API_ADAPTER_GEOFENCE_GEN_ALERT)
+#define LOC_API_ADAPTER_BIT_REPORT_GENFENCE_BREACH           (1<<LOC_API_ADAPTER_REPORT_GENFENCE_BREACH)
+#define LOC_API_ADAPTER_BIT_BATCHED_GENFENCE_BREACH_REPORT   (1<<LOC_API_ADAPTER_BATCHED_GENFENCE_BREACH_REPORT)
+#define LOC_API_ADAPTER_BIT_PEDOMETER_CTRL                   (1<<LOC_API_ADAPTER_PEDOMETER_CTRL)
+#define LOC_API_ADAPTER_BIT_MOTION_CTRL                      (1<<LOC_API_ADAPTER_MOTION_CTRL)
+#define LOC_API_ADAPTER_BIT_REQUEST_WIFI_AP_DATA             (1<<LOC_API_ADAPTER_REQUEST_WIFI_AP_DATA)
+#define LOC_API_ADAPTER_BIT_BATCH_FULL                       (1<<LOC_API_ADAPTER_BATCH_FULL)
+#define LOC_API_ADAPTER_BIT_BATCHED_POSITION_REPORT          (1<<LOC_API_ADAPTER_BATCHED_POSITION_REPORT)
+#define LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT_REPORT          (1<<LOC_API_ADAPTER_GNSS_MEASUREMENT_REPORT)
+#define LOC_API_ADAPTER_BIT_GNSS_SV_POLYNOMIAL_REPORT        (1<<LOC_API_ADAPTER_GNSS_SV_POLYNOMIAL_REPORT)
+#define LOC_API_ADAPTER_BIT_GDT_UPLOAD_BEGIN_REQ             (1<<LOC_API_ADAPTER_GDT_UPLOAD_BEGIN_REQ)
+#define LOC_API_ADAPTER_BIT_GDT_UPLOAD_END_REQ               (1<<LOC_API_ADAPTER_GDT_UPLOAD_END_REQ)
+#define LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT                 (1<<LOC_API_ADAPTER_GNSS_MEASUREMENT)
+#define LOC_API_ADAPTER_BIT_REQUEST_TIMEZONE                 (1<<LOC_API_ADAPTER_REQUEST_TIMEZONE)
+#define LOC_API_ADAPTER_BIT_REPORT_GENFENCE_DWELL            (1<<LOC_API_ADAPTER_REPORT_GENFENCE_DWELL_REPORT)
+#define LOC_API_ADAPTER_BIT_REQUEST_SRN_DATA                 (1<<LOC_API_ADAPTER_REQUEST_SRN_DATA)
+
+
+typedef unsigned int LOC_API_ADAPTER_EVENT_MASK_T;
+
+typedef enum loc_api_adapter_msg_to_check_supported {
+    LOC_API_ADAPTER_MESSAGE_LOCATION_BATCHING,               // Batching 1.0
+    LOC_API_ADAPTER_MESSAGE_BATCHED_GENFENCE_BREACH,         // Geofence Batched Breach
+    LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING,          // DBT 2.0
+    LOC_API_ADAPTER_MESSAGE_ADAPTIVE_LOCATION_BATCHING,      // Batching 1.5
+    LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING, // Batching 2.0
+    LOC_API_ADAPTER_MESSAGE_UPDATE_TBF_ON_THE_FLY,           // Updating Tracking TBF On The Fly
+
+    LOC_API_ADAPTER_MESSAGE_MAX
+} LocCheckingMessagesID;
+
+typedef int IzatDevId_t;
+
+typedef uint32_t LOC_GPS_LOCK_MASK;
+#define isGpsLockNone(lock) ((lock) == 0)
+#define isGpsLockMO(lock) ((lock) & ((LOC_GPS_LOCK_MASK)1))
+#define isGpsLockMT(lock) ((lock) & ((LOC_GPS_LOCK_MASK)2))
+#define isGpsLockAll(lock) (((lock) & ((LOC_GPS_LOCK_MASK)3)) == 3)
+
+/*++ ***********************************************
+**  Satellite Measurement and Satellite Polynomial
+**  Structure definitions
+**  ***********************************************
+--*/
+#define GNSS_SV_POLY_VELOCITY_COEF_MAX_SIZE         12
+#define GNSS_SV_POLY_XYZ_0_TH_ORDER_COEFF_MAX_SIZE  3
+#define GNSS_SV_POLY_XYZ_N_TH_ORDER_COEFF_MAX_SIZE  9
+#define GNSS_SV_POLY_SV_CLKBIAS_COEFF_MAX_SIZE      4
+#define GNSS_LOC_SV_MEAS_LIST_MAX_SIZE              16
+
+enum ulp_gnss_sv_measurement_valid_flags{
+
+    ULP_GNSS_SV_MEAS_GPS_TIME = 0,
+    ULP_GNSS_SV_MEAS_PSUEDO_RANGE,
+    ULP_GNSS_SV_MEAS_MS_IN_WEEK,
+    ULP_GNSS_SV_MEAS_SUB_MSEC,
+    ULP_GNSS_SV_MEAS_CARRIER_PHASE,
+    ULP_GNSS_SV_MEAS_DOPPLER_SHIFT,
+    ULP_GNSS_SV_MEAS_CNO,
+    ULP_GNSS_SV_MEAS_LOSS_OF_LOCK,
+
+    ULP_GNSS_SV_MEAS_MAX_VALID_FLAGS
+};
+
+#define ULP_GNSS_SV_MEAS_BIT_GPS_TIME        (1<<ULP_GNSS_SV_MEAS_GPS_TIME)
+#define ULP_GNSS_SV_MEAS_BIT_PSUEDO_RANGE    (1<<ULP_GNSS_SV_MEAS_PSUEDO_RANGE)
+#define ULP_GNSS_SV_MEAS_BIT_MS_IN_WEEK      (1<<ULP_GNSS_SV_MEAS_MS_IN_WEEK)
+#define ULP_GNSS_SV_MEAS_BIT_SUB_MSEC        (1<<ULP_GNSS_SV_MEAS_SUB_MSEC)
+#define ULP_GNSS_SV_MEAS_BIT_CARRIER_PHASE   (1<<ULP_GNSS_SV_MEAS_CARRIER_PHASE)
+#define ULP_GNSS_SV_MEAS_BIT_DOPPLER_SHIFT   (1<<ULP_GNSS_SV_MEAS_DOPPLER_SHIFT)
+#define ULP_GNSS_SV_MEAS_BIT_CNO             (1<<ULP_GNSS_SV_MEAS_CNO)
+#define ULP_GNSS_SV_MEAS_BIT_LOSS_OF_LOCK    (1<<ULP_GNSS_SV_MEAS_LOSS_OF_LOCK)
+
+enum ulp_gnss_sv_poly_valid_flags{
+
+    ULP_GNSS_SV_POLY_GLO_FREQ = 0,
+    ULP_GNSS_SV_POLY_T0,
+    ULP_GNSS_SV_POLY_IODE,
+    ULP_GNSS_SV_POLY_FLAG,
+    ULP_GNSS_SV_POLY_POLYCOEFF_XYZ0,
+    ULP_GNSS_SV_POLY_POLYCOEFF_XYZN,
+    ULP_GNSS_SV_POLY_POLYCOEFF_OTHER,
+    ULP_GNSS_SV_POLY_SV_POSUNC,
+    ULP_GNSS_SV_POLY_IONODELAY,
+    ULP_GNSS_SV_POLY_IONODOT,
+    ULP_GNSS_SV_POLY_SBAS_IONODELAY,
+    ULP_GNSS_SV_POLY_SBAS_IONODOT,
+    ULP_GNSS_SV_POLY_TROPODELAY,
+    ULP_GNSS_SV_POLY_ELEVATION,
+    ULP_GNSS_SV_POLY_ELEVATIONDOT,
+    ULP_GNSS_SV_POLY_ELEVATIONUNC,
+    ULP_GNSS_SV_POLY_VELO_COEFF,
+    ULP_GNSS_SV_POLY_ENHANCED_IOD,
+
+    ULP_GNSS_SV_POLY_VALID_FLAGS
+
+};
+
+#define ULP_GNSS_SV_POLY_BIT_GLO_FREQ               (1<<ULP_GNSS_SV_POLY_GLO_FREQ)
+#define ULP_GNSS_SV_POLY_BIT_T0                     (1<<ULP_GNSS_SV_POLY_T0)
+#define ULP_GNSS_SV_POLY_BIT_IODE                   (1<<ULP_GNSS_SV_POLY_IODE)
+#define ULP_GNSS_SV_POLY_BIT_FLAG                   (1<<ULP_GNSS_SV_POLY_FLAG)
+#define ULP_GNSS_SV_POLY_BIT_POLYCOEFF_XYZ0         (1<<ULP_GNSS_SV_POLY_POLYCOEFF_XYZ0)
+#define ULP_GNSS_SV_POLY_BIT_POLYCOEFF_XYZN         (1<<ULP_GNSS_SV_POLY_POLYCOEFF_XYZN)
+#define ULP_GNSS_SV_POLY_BIT_POLYCOEFF_OTHER        (1<<ULP_GNSS_SV_POLY_POLYCOEFF_OTHER)
+#define ULP_GNSS_SV_POLY_BIT_SV_POSUNC              (1<<ULP_GNSS_SV_POLY_SV_POSUNC)
+#define ULP_GNSS_SV_POLY_BIT_IONODELAY              (1<<ULP_GNSS_SV_POLY_IONODELAY)
+#define ULP_GNSS_SV_POLY_BIT_IONODOT                (1<<ULP_GNSS_SV_POLY_IONODOT)
+#define ULP_GNSS_SV_POLY_BIT_SBAS_IONODELAY         (1<<ULP_GNSS_SV_POLY_SBAS_IONODELAY)
+#define ULP_GNSS_SV_POLY_BIT_SBAS_IONODOT           (1<<ULP_GNSS_SV_POLY_SBAS_IONODOT)
+#define ULP_GNSS_SV_POLY_BIT_TROPODELAY             (1<<ULP_GNSS_SV_POLY_TROPODELAY)
+#define ULP_GNSS_SV_POLY_BIT_ELEVATION              (1<<ULP_GNSS_SV_POLY_ELEVATION)
+#define ULP_GNSS_SV_POLY_BIT_ELEVATIONDOT           (1<<ULP_GNSS_SV_POLY_ELEVATIONDOT)
+#define ULP_GNSS_SV_POLY_BIT_ELEVATIONUNC           (1<<ULP_GNSS_SV_POLY_ELEVATIONUNC)
+#define ULP_GNSS_SV_POLY_BIT_VELO_COEFF             (1<<ULP_GNSS_SV_POLY_VELO_COEFF)
+#define ULP_GNSS_SV_POLY_BIT_ENHANCED_IOD           (1<<ULP_GNSS_SV_POLY_ENHANCED_IOD)
+
+
+typedef enum
+{
+    GNSS_LOC_SV_SYSTEM_GPS                    = 1,
+    /**< GPS satellite. */
+    GNSS_LOC_SV_SYSTEM_GALILEO                = 2,
+    /**< GALILEO satellite. */
+    GNSS_LOC_SV_SYSTEM_SBAS                   = 3,
+    /**< SBAS satellite. */
+    GNSS_LOC_SV_SYSTEM_COMPASS                = 4,
+    /**< COMPASS satellite. */
+    GNSS_LOC_SV_SYSTEM_GLONASS                = 5,
+    /**< GLONASS satellite. */
+    GNSS_LOC_SV_SYSTEM_BDS                    = 6
+    /**< BDS satellite. */
+} Gnss_LocSvSystemEnumType;
+
+typedef enum
+{
+    GNSS_LOC_FREQ_SOURCE_INVALID = 0,
+    /**< Source of the frequency is invalid */
+    GNSS_LOC_FREQ_SOURCE_EXTERNAL = 1,
+    /**< Source of the frequency is from external injection */
+    GNSS_LOC_FREQ_SOURCE_PE_CLK_REPORT = 2,
+    /**< Source of the frequency is from Navigation engine */
+    GNSS_LOC_FREQ_SOURCE_UNKNOWN = 3
+    /**< Source of the frequency is unknown */
+} Gnss_LocSourceofFreqEnumType;
+
+typedef struct
+{
+    size_t                          size;
+    float                           clockDrift;
+    /**< Receiver clock Drift \n
+         - Units: meter per sec \n
+    */
+    float                           clockDriftUnc;
+    /**< Receiver clock Drift uncertainty \n
+         - Units: meter per sec \n
+    */
+    Gnss_LocSourceofFreqEnumType    sourceOfFreq;
+}Gnss_LocRcvrClockFrequencyInfoStructType;
+
+typedef struct
+{
+    size_t      size;
+    uint8_t     leapSec;
+    /**< GPS time leap second delta to UTC time  \n
+         - Units: sec \n
+       */
+    uint8_t     leapSecUnc;
+    /**< Uncertainty for GPS leap second \n
+         - Units: sec \n
+       */
+}Gnss_LeapSecondInfoStructType;
+
+typedef enum
+{
+   GNSS_LOC_SYS_TIME_BIAS_VALID                = 0x01,
+   /**< System time bias valid */
+   GNSS_LOC_SYS_TIME_BIAS_UNC_VALID            = 0x02,
+   /**< System time bias uncertainty valid */
+}Gnss_LocInterSystemBiasValidMaskType;
+
+typedef struct
+{
+    size_t          size;
+    uint32_t        validMask;
+    /* Validity mask as per Gnss_LocInterSystemBiasValidMaskType */
+
+    float           timeBias;
+    /**< System-1 to System-2 Time Bias  \n
+        - Units: msec \n
+    */
+    float           timeBiasUnc;
+    /**< System-1 to System-2 Time Bias uncertainty  \n
+        - Units: msec \n
+    */
+}Gnss_InterSystemBiasStructType;
+
+
+typedef struct
+{
+    size_t          size;
+    uint16_t        systemWeek;
+    /**< System week number for GPS, BDS and GAL satellite systems. \n
+         Set to 65535 when invalid or not available. \n
+         Not valid for GLONASS system. \n
+       */
+
+    uint32_t        systemMsec;
+    /**< System time msec. Time of Week for GPS, BDS, GAL and
+         Time of Day for GLONASS.
+         - Units: msec \n
+      */
+    float           systemClkTimeBias;
+    /**< System clock time bias \n
+         - Units: msec \n
+         System time = systemMsec - systemClkTimeBias \n
+      */
+    float           systemClkTimeUncMs;
+    /**< Single sided maximum time bias uncertainty \n
+                                                    - Units: msec \n
+      */
+}Gnss_LocSystemTimeStructType;
+
+typedef struct {
+
+  size_t        size;
+  uint8_t       gloFourYear;
+  /**<   GLONASS four year number from 1996. Refer to GLONASS ICD.\n
+        Applicable only for GLONASS and shall be ignored for other constellations. \n
+        If unknown shall be set to 255
+        */
+
+  uint16_t      gloDays;
+  /**<   GLONASS day number in four years. Refer to GLONASS ICD.
+        Applicable only for GLONASS and shall be ignored for other constellations. \n
+        If unknown shall be set to 65535
+        */
+
+  uint32_t      gloMsec;
+  /**<   GLONASS time of day in msec. Refer to GLONASS ICD.
+            - Units: msec \n
+        */
+
+  float         gloClkTimeBias;
+  /**<   System clock time bias (sub-millisecond) \n
+            - Units: msec \n
+        System time = systemMsec - systemClkTimeBias \n
+    */
+
+  float         gloClkTimeUncMs;
+  /**<   Single sided maximum time bias uncertainty \n
+                - Units: msec \n
+        */
+}Gnss_LocGloTimeStructType;  /* Type */
+
+typedef struct {
+
+  size_t    size;
+  uint32_t  refFCount;
+  /**<   Receiver frame counter value at reference tick */
+
+  uint8_t   systemRtc_valid;
+  /**<   Validity indicator for System RTC */
+
+  uint64_t  systemRtcMs;
+  /**<   Platform system RTC value \n
+        - Units: msec \n
+        */
+
+  uint32_t  sourceOfTime;
+  /**<   Source of time information */
+
+}Gnss_LocGnssTimeExtStructType;
+
+
+
+typedef enum
+{
+    GNSS_LOC_MEAS_STATUS_NULL                    = 0x00000000,
+    /**< No information state */
+    GNSS_LOC_MEAS_STATUS_SM_VALID                = 0x00000001,
+    /**< Code phase is known */
+    GNSS_LOC_MEAS_STATUS_SB_VALID                = 0x00000002,
+    /**< Sub-bit time is known */
+    GNSS_LOC_MEAS_STATUS_MS_VALID                = 0x00000004,
+    /**< Satellite time is known */
+    GNSS_LOC_MEAS_STATUS_BE_CONFIRM              = 0x00000008,
+    /**< Bit edge is confirmed from signal   */
+    GNSS_LOC_MEAS_STATUS_VELOCITY_VALID          = 0x00000010,
+    /**< Satellite Doppler measured */
+    GNSS_LOC_MEAS_STATUS_VELOCITY_FINE           = 0x00000020,
+    /**< TRUE: Fine Doppler measured, FALSE: Coarse Doppler measured */
+    GNSS_LOC_MEAS_STATUS_FROM_RNG_DIFF           = 0x00000200,
+    /**< Range update from Satellite differences */
+    GNSS_LOC_MEAS_STATUS_FROM_VE_DIFF            = 0x00000400,
+    /**< Doppler update from Satellite differences */
+    GNSS_LOC_MEAS_STATUS_DONT_USE_X              = 0x00000800,
+    /**< Don't use measurement if bit is set */
+    GNSS_LOC_MEAS_STATUS_DONT_USE_M              = 0x000001000,
+    /**< Don't use measurement if bit is set */
+    GNSS_LOC_MEAS_STATUS_DONT_USE_D              = 0x000002000,
+    /**< Don't use measurement if bit is set */
+    GNSS_LOC_MEAS_STATUS_DONT_USE_S              = 0x000004000,
+    /**< Don't use measurement if bit is set */
+    GNSS_LOC_MEAS_STATUS_DONT_USE_P              = 0x000008000
+    /**< Don't use measurement if bit is set */
+}Gnss_LocSvMeasStatusMaskType;
+
+typedef struct
+{
+    size_t              size;
+    uint32_t            svMs;
+    /**<  Satellite time milisecond.\n
+          For GPS, BDS, GAL range of 0 thru (604800000-1) \n
+          For GLONASS range of 0 thru (86400000-1) \n
+          Valid when PD_LOC_MEAS_STATUS_MS_VALID bit is set in measurement status \n
+          Note: All SV times in the current measurement block are alredy propagated to common reference time epoch. \n
+            - Units: msec \n
+       */
+    float               svSubMs;
+    /**<Satellite time sub-millisecond. \n
+        Total SV Time = svMs + svSubMs \n
+        - Units: msec \n
+       */
+    float               svTimeUncMs;
+    /**<  Satellite Time uncertainty \n
+          - Units: msec \n
+       */
+    float               dopplerShift;
+    /**< Satellite Doppler \n
+            - Units: meter per sec \n
+       */
+    float               dopplerShiftUnc;
+    /**< Satellite Doppler uncertainty\n
+            - Units: meter per sec \n
+       */
+}Gnss_LocSVTimeSpeedStructType;
+
+typedef enum
+{
+  GNSS_SV_STATE_IDLE = 0,
+  GNSS_SV_STATE_SEARCH = 1,
+  GNSS_SV_STATE_SEARCH_VERIFY = 2,
+  GNSS_SV_STATE_BIT_EDGE = 3,
+  GNSS_SV_STATE_VERIFY_TRACK = 4,
+  GNSS_SV_STATE_TRACK = 5,
+  GNSS_SV_STATE_RESTART = 6,
+  GNSS_SV_STATE_DPO_TRACK = 7
+} Gnss_LocSVStateEnumType;
+
+typedef enum
+{
+  GNSS_LOC_SVINFO_MASK_HAS_EPHEMERIS   = 0x01,
+  /**< Ephemeris is available for this SV */
+  GNSS_LOC_SVINFO_MASK_HAS_ALMANAC     = 0x02
+  /**< Almanac is available for this SV */
+}Gnss_LocSvInfoMaskT;
+
+typedef enum
+{
+  GNSS_LOC_SV_SRCH_STATUS_IDLE      = 1,
+    /**< SV is not being actively processed */
+  GNSS_LOC_SV_SRCH_STATUS_SEARCH    = 2,
+    /**< The system is searching for this SV */
+  GNSS_LOC_SV_SRCH_STATUS_TRACK     = 3
+    /**< SV is being tracked */
+}Gnss_LocSvSearchStatusEnumT;
+
+
+typedef struct
+{
+    size_t                          size;
+    uint16_t                        gnssSvId;
+    /**< GNSS SV ID.
+         \begin{itemize1}
+         \item Range:  \begin{itemize1}
+           \item For GPS:      1 to 32
+           \item For GLONASS:  1 to 32
+           \item For SBAS:     120 to 151
+           \item For BDS:      201 to 237
+         \end{itemize1} \end{itemize1}
+        The GPS and GLONASS SVs can be disambiguated using the system field.
+    */
+    uint8_t                         gloFrequency;
+    /**< GLONASS frequency number + 7 \n
+         Valid only for GLONASS System \n
+         Shall be ignored for all other systems \n
+          - Range: 1 to 14 \n
+    */
+    Gnss_LocSvSearchStatusEnumT     svStatus;
+    /**< Satellite search state \n
+        @ENUM()
+    */
+    bool                         healthStatus_valid;
+    /**< SV Health Status validity flag\n
+        - 0: Not valid \n
+        - 1: Valid \n
+    */
+    uint8_t                         healthStatus;
+    /**< Health status.
+         \begin{itemize1}
+         \item    Range: 0 to 1; 0 = unhealthy, \n 1 = healthy, 2 = unknown
+         \vspace{-0.18in} \end{itemize1}
+    */
+    Gnss_LocSvInfoMaskT             svInfoMask;
+    /**< Indicates whether almanac and ephemeris information is available. \n
+        @MASK()
+    */
+    uint64_t                        measurementStatus;
+    /**< Bitmask indicating SV measurement status.
+        Valid bitmasks: \n
+        If any MSB bit in 0xFFC0000000000000 DONT_USE is set, the measurement
+        must not be used by the client.
+        @MASK()
+    */
+    uint16_t                        CNo;
+    /**< Carrier to Noise ratio  \n
+        - Units: 0.1 dBHz \n
+    */
+    uint16_t                          gloRfLoss;
+    /**< GLONASS Rf loss reference to Antenna. \n
+         - Units: dB, Scale: 0.1 \n
+    */
+    bool                         lossOfLock;
+    /**< Loss of signal lock indicator  \n
+         - 0: Signal in continuous track \n
+         - 1: Signal not in track \n
+    */
+    int16_t                         measLatency;
+    /**< Age of the measurement. Positive value means measurement precedes ref time. \n
+         - Units: msec \n
+    */
+    Gnss_LocSVTimeSpeedStructType   svTimeSpeed;
+    /**< Unfiltered SV Time and Speed information
+    */
+    float                           dopplerAccel;
+    /**< Satellite Doppler Accelertion\n
+         - Units: Hz/s \n
+    */
+    bool                         multipathEstValid;
+    /**< Multipath estimate validity flag\n
+        - 0: Multipath estimate not valid \n
+        - 1: Multipath estimate valid \n
+    */
+    float                           multipathEstimate;
+    /**< Estimate of multipath in measurement\n
+         - Units: Meters \n
+    */
+    bool                         fineSpeedValid;
+    /**< Fine speed validity flag\n
+         - 0: Fine speed not valid \n
+         - 1: Fine speed valid \n
+    */
+    float                           fineSpeed;
+    /**< Carrier phase derived speed \n
+         - Units: m/s \n
+    */
+    bool                         fineSpeedUncValid;
+    /**< Fine speed uncertainty validity flag\n
+         - 0: Fine speed uncertainty not valid \n
+         - 1: Fine speed uncertainty valid \n
+    */
+    float                           fineSpeedUnc;
+    /**< Carrier phase derived speed \n
+        - Units: m/s \n
+    */
+    bool                         carrierPhaseValid;
+    /**< Carrier Phase measurement validity flag\n
+         - 0: Carrier Phase not valid \n
+         - 1: Carrier Phase valid \n
+    */
+    double                          carrierPhase;
+    /**< Carrier phase measurement [L1 cycles] \n
+    */
+    bool                         cycleSlipCountValid;
+     /**< Cycle slup count validity flag\n
+         - 0: Not valid \n
+         - 1: Valid \n
+    */
+    uint8_t                         cycleSlipCount;
+    /**< Increments when a CSlip is detected */
+
+    bool                         svDirectionValid;
+    /**< Validity flag for SV direction */
+
+    float                           svAzimuth;
+    /**< Satellite Azimuth
+        - Units: radians \n
+    */
+    float                           svElevation;
+    /**< Satellite Elevation
+        - Units: radians \n
+    */
+} Gnss_SVMeasurementStructType;
+
+/**< Maximum number of satellites in measurement block for given system. */
+
+typedef struct
+{
+    size_t                          size;
+    Gnss_LocSvSystemEnumType        system;
+    /**< Specifies the Satellite System Type
+    */
+    bool                            isSystemTimeValid;
+    /**< Indicates whether System Time is Valid:\n
+         - 0x01 (TRUE) --  System Time is valid \n
+         - 0x00 (FALSE) -- System Time is not valid
+    */
+    Gnss_LocSystemTimeStructType    systemTime;
+    /**< System Time Information \n
+    */
+    bool                            isGloTime_valid;
+    Gnss_LocGloTimeStructType       gloTime;
+
+    bool                            isSystemTimeExt_valid;
+    Gnss_LocGnssTimeExtStructType   systemTimeExt;
+
+    uint8_t                         numSvs;
+    /* Number of SVs in this report block */
+
+    Gnss_SVMeasurementStructType    svMeasurement[GNSS_LOC_SV_MEAS_LIST_MAX_SIZE];
+    /**< Satellite measurement Information \n
+    */
+} Gnss_ClockMeasurementStructType;
+
+
+typedef struct
+{
+    size_t                                      size;
+    uint8_t                                     seqNum;
+    /**< Current message Number */
+    uint8_t                                     maxMessageNum;
+    /**< Maximum number of message that will be sent for present time epoch. */
+
+    bool                                     leapSecValid;
+    Gnss_LeapSecondInfoStructType               leapSec;
+
+    Gnss_InterSystemBiasStructType              gpsGloInterSystemBias;
+
+    Gnss_InterSystemBiasStructType              gpsBdsInterSystemBias;
+
+    Gnss_InterSystemBiasStructType              gpsGalInterSystemBias;
+
+    Gnss_InterSystemBiasStructType              bdsGloInterSystemBias;
+
+    Gnss_InterSystemBiasStructType              galGloInterSystemBias;
+
+    Gnss_InterSystemBiasStructType              galBdsInterSystemBias;
+
+    bool                                     clockFreqValid;
+    Gnss_LocRcvrClockFrequencyInfoStructType    clockFreq;   /* Freq */
+    bool                                     gnssMeasValid;
+    Gnss_ClockMeasurementStructType             gnssMeas;
+    Gnss_ApTimeStampStructType               timeStamp;
+
+} GnssSvMeasurementSet;
+
+typedef enum
+{
+   GNSS_SV_POLY_COEFF_VALID             = 0x01,
+   /**< SV position in orbit coefficients are valid */
+   GNSS_SV_POLY_IONO_VALID              = 0x02,
+   /**< Iono estimates are valid */
+
+   GNSS_SV_POLY_TROPO_VALID             = 0x04,
+   /**< Tropo estimates are valid */
+
+   GNSS_SV_POLY_ELEV_VALID              = 0x08,
+   /**< Elevation, rate, uncertainty are valid */
+
+   GNSS_SV_POLY_SRC_ALM_CORR            = 0x10,
+   /**< Polynomials based on XTRA */
+
+   GNSS_SV_POLY_SBAS_IONO_VALID         = 0x20,
+   /**< SBAS IONO and rate are valid */
+
+   GNSS_SV_POLY_GLO_STR4                = 0x40
+   /**< GLONASS String 4 has been received */
+}Gnss_SvPolyStatusMaskType;
+
+
+typedef struct
+{
+    size_t      size;
+    uint16_t     gnssSvId;
+    /* GPS: 1-32, GLO: 65-96, 0: Invalid,
+       SBAS: 120-151, BDS:201-237,GAL:301 to 336
+       All others are reserved
+    */
+    int8_t      freqNum;
+    /* Freq index, only valid if u_SysInd is GLO */
+
+    uint8_t     svPolyFlags;
+    /* Indicate the validity of the elements
+    as per Gnss_SvPolyStatusMaskType
+    */
+
+    uint32_t    is_valid;
+
+    uint16_t     iode;
+    /* Ephemeris reference time
+       GPS:Issue of Data Ephemeris used [unitless].
+       GLO: Tb 7-bit, refer to ICD02
+    */
+    double      T0;
+    /* Reference time for polynominal calculations
+       GPS: Secs in week.
+       GLO: Full secs since Jan/01/96
+    */
+    double      polyCoeffXYZ0[GNSS_SV_POLY_XYZ_0_TH_ORDER_COEFF_MAX_SIZE];
+    /* C0X, C0Y, C0Z */
+    double      polyCoefXYZN[GNSS_SV_POLY_XYZ_N_TH_ORDER_COEFF_MAX_SIZE];
+    /* C1X, C2X ... C2Z, C3Z */
+    float       polyCoefOther[GNSS_SV_POLY_SV_CLKBIAS_COEFF_MAX_SIZE];
+    /* C0T, C1T, C2T, C3T */
+    float       svPosUnc;       /* SV position uncertainty [m]. */
+    float       ionoDelay;    /* Ionospheric delay at d_T0 [m]. */
+    float       ionoDot;      /* Iono delay rate [m/s].  */
+    float       sbasIonoDelay;/* SBAS Ionospheric delay at d_T0 [m]. */
+    float       sbasIonoDot;  /* SBAS Iono delay rate [m/s].  */
+    float       tropoDelay;   /* Tropospheric delay [m]. */
+    float       elevation;    /* Elevation [rad] at d_T0 */
+    float       elevationDot;      /* Elevation rate [rad/s] */
+    float       elevationUnc;      /* SV elevation [rad] uncertainty */
+    double      velCoef[GNSS_SV_POLY_VELOCITY_COEF_MAX_SIZE];
+    /* Coefficients of velocity poly */
+    uint32_t    enhancedIOD;    /*  Enhanced Reference Time */
+} GnssSvPolynomial;
+
+/* Various Short Range Node Technology type*/
+typedef enum {
+    SRN_AP_DATA_TECH_TYPE_NONE,
+    SRN_AP_DATA_TECH_TYPE_BT,
+    SRN_AP_DATA_TECH_TYPE_BTLE,
+    SRN_AP_DATA_TECH_TYPE_NFC,
+    SRN_AP_DATA_TECH_TYPE_MOBILE_CODE,
+    SRN_AP_DATA_TECH_TYPE_OTHER
+} Gnss_SrnTech;
+
+/* Mac Address type requested by modem */
+typedef enum {
+    SRN_AP_DATA_PUBLIC_MAC_ADDR_TYPE_INVALID, /* No valid mac address type send */
+    SRN_AP_DATA_PUBLIC_MAC_ADDR_TYPE_PUBLIC, /* SRN AP MAC Address type PUBLIC  */
+    SRN_AP_DATA_PUBLIC_MAC_ADDR_TYPE_PRIVATE, /* SRN AP MAC Address type PRIVATE  */
+    SRN_AP_DATA_PUBLIC_MAC_ADDR_TYPE_OTHER, /* SRN AP MAC Address type OTHER  */
+}Gnss_Srn_MacAddr_Type;
+
+typedef struct
+{
+    size_t                 size;
+    Gnss_SrnTech           srnTechType; /* SRN Technology type in request */
+    bool                   srnRequest; /* scan - start(true) or stop(false) */
+    bool                   e911Mode; /* If in E911 emergency */
+    Gnss_Srn_MacAddr_Type  macAddrType; /* SRN AP MAC Address type */
+} GnssSrnDataReq;
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* GPS_EXTENDED_C_H */
diff --git a/sdm845/utils/linked_list.c b/sdm845/utils/linked_list.c
new file mode 100644
index 0000000..33185d0
--- /dev/null
+++ b/sdm845/utils/linked_list.c
@@ -0,0 +1,324 @@
+/* Copyright (c) 2011, 2014, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "linked_list.h"
+#include <stdio.h>
+#include <string.h>
+
+#define LOG_TAG "LocSvc_utils_ll"
+#include <platform_lib_includes.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef struct list_element {
+   struct list_element* next;
+   struct list_element* prev;
+   void* data_ptr;
+   void (*dealloc_func)(void*);
+}list_element;
+
+typedef struct list_state {
+   list_element* p_head;
+   list_element* p_tail;
+} list_state;
+
+/* ----------------------- END INTERNAL FUNCTIONS ---------------------------------------- */
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_init
+
+  ===========================================================================*/
+linked_list_err_type linked_list_init(void** list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* tmp_list;
+   tmp_list = (list_state*)calloc(1, sizeof(list_state));
+   if( tmp_list == NULL )
+   {
+      LOC_LOGE("%s: Unable to allocate space for list!\n", __FUNCTION__);
+      return eLINKED_LIST_FAILURE_GENERAL;
+   }
+
+   tmp_list->p_head = NULL;
+   tmp_list->p_tail = NULL;
+
+   *list_data = tmp_list;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_destroy
+
+  ===========================================================================*/
+linked_list_err_type linked_list_destroy(void** list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)*list_data;
+
+   linked_list_flush(p_list);
+
+   free(*list_data);
+   *list_data = NULL;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_add
+
+  ===========================================================================*/
+linked_list_err_type linked_list_add(void* list_data, void *data_obj, void (*dealloc)(void*))
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   if( data_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid input parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   list_element* elem = (list_element*)malloc(sizeof(list_element));
+   if( elem == NULL )
+   {
+      LOC_LOGE("%s: Memory allocation failed\n", __FUNCTION__);
+      return eLINKED_LIST_FAILURE_GENERAL;
+   }
+
+   /* Copy data to newly created element */
+   elem->data_ptr = data_obj;
+   elem->next = NULL;
+   elem->prev = NULL;
+   elem->dealloc_func = dealloc;
+
+   /* Replace head element */
+   list_element* tmp = p_list->p_head;
+   p_list->p_head = elem;
+   /* Point next to the previous head element */
+   p_list->p_head->next = tmp;
+
+   if( tmp != NULL )
+   {
+      tmp->prev = p_list->p_head;
+   }
+   else
+   {
+      p_list->p_tail = p_list->p_head;
+   }
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_remove
+
+  ===========================================================================*/
+linked_list_err_type linked_list_remove(void* list_data, void **data_obj)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   if( data_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid input parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_PARAMETER;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   if( p_list->p_tail == NULL )
+   {
+      return eLINKED_LIST_UNAVAILABLE_RESOURCE;
+   }
+
+   list_element* tmp = p_list->p_tail;
+
+   /* Replace tail element */
+   p_list->p_tail = tmp->prev;
+
+   if( p_list->p_tail != NULL )
+   {
+      p_list->p_tail->next = NULL;
+   }
+   else
+   {
+      p_list->p_head = p_list->p_tail;
+   }
+
+   /* Copy data to output param */
+   *data_obj = tmp->data_ptr;
+
+   /* Free allocated list element */
+   free(tmp);
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_empty
+
+  ===========================================================================*/
+int linked_list_empty(void* list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return (int)eLINKED_LIST_INVALID_HANDLE;
+   }
+   else
+   {
+      list_state* p_list = (list_state*)list_data;
+      return p_list->p_head == NULL ? 1 : 0;
+   }
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_flush
+
+  ===========================================================================*/
+linked_list_err_type linked_list_flush(void* list_data)
+{
+   if( list_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid list parameter!\n", __FUNCTION__);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+
+   /* Remove all dynamically allocated elements */
+   while( p_list->p_head != NULL )
+   {
+      list_element* tmp = p_list->p_head->next;
+
+      /* Free data pointer if told to do so. */
+      if( p_list->p_head->dealloc_func != NULL )
+      {
+         p_list->p_head->dealloc_func(p_list->p_head->data_ptr);
+      }
+
+      /* Free list element */
+      free(p_list->p_head);
+
+      p_list->p_head = tmp;
+   }
+
+   p_list->p_tail = NULL;
+
+   return eLINKED_LIST_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   linked_list_search
+
+  ===========================================================================*/
+linked_list_err_type linked_list_search(void* list_data, void **data_p,
+                                        bool (*equal)(void* data_0, void* data),
+                                        void* data_0, bool rm_if_found)
+{
+   if( list_data == NULL || NULL == equal )
+   {
+      LOC_LOGE("%s: Invalid list parameter! list_data %p equal %p\n",
+               __FUNCTION__, list_data, equal);
+      return eLINKED_LIST_INVALID_HANDLE;
+   }
+
+   list_state* p_list = (list_state*)list_data;
+   if( p_list->p_tail == NULL )
+   {
+      return eLINKED_LIST_UNAVAILABLE_RESOURCE;
+   }
+
+   list_element* tmp = p_list->p_head;
+
+   if (NULL != data_p) {
+     *data_p = NULL;
+   }
+
+   while (NULL != tmp) {
+     if ((*equal)(data_0, tmp->data_ptr)) {
+       if (NULL != data_p) {
+         *data_p = tmp->data_ptr;
+       }
+
+       if (rm_if_found) {
+         if (NULL == tmp->prev) {
+           p_list->p_head = tmp->next;
+         } else {
+           tmp->prev->next = tmp->next;
+         }
+
+         if (NULL == tmp->next) {
+           p_list->p_tail = tmp->prev;
+         } else {
+           tmp->next->prev = tmp->prev;
+         }
+
+         tmp->prev = tmp->next = NULL;
+
+         // dealloc data if it is not copied out && caller
+         // has given us a dealloc function pointer.
+         if (NULL == data_p && NULL != tmp->dealloc_func) {
+             tmp->dealloc_func(tmp->data_ptr);
+         }
+         free(tmp);
+       }
+
+       tmp = NULL;
+     } else {
+       tmp = tmp->next;
+     }
+   }
+
+   return eLINKED_LIST_SUCCESS;
+}
+
diff --git a/sdm845/utils/linked_list.h b/sdm845/utils/linked_list.h
new file mode 100644
index 0000000..a85f09a
--- /dev/null
+++ b/sdm845/utils/linked_list.h
@@ -0,0 +1,217 @@
+/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __LINKED_LIST_H__
+#define __LINKED_LIST_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+/** Linked List Return Codes */
+typedef enum
+{
+  eLINKED_LIST_SUCCESS                             = 0,
+     /**< Request was successful. */
+  eLINKED_LIST_FAILURE_GENERAL                     = -1,
+     /**< Failed because of a general failure. */
+  eLINKED_LIST_INVALID_PARAMETER                   = -2,
+     /**< Failed because the request contained invalid parameters. */
+  eLINKED_LIST_INVALID_HANDLE                      = -3,
+     /**< Failed because an invalid handle was specified. */
+  eLINKED_LIST_UNAVAILABLE_RESOURCE                = -4,
+     /**< Failed because an there were not enough resources. */
+  eLINKED_LIST_INSUFFICIENT_BUFFER                 = -5,
+     /**< Failed because an the supplied buffer was too small. */
+}linked_list_err_type;
+
+/*===========================================================================
+FUNCTION    linked_list_init
+
+DESCRIPTION
+   Initializes internal structures for linked list.
+
+   list_data: State of list to be initialized.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_init(void** list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_destroy
+
+DESCRIPTION
+   Destroys internal structures for linked list.
+
+   p_list_data: State of list to be destroyed.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_destroy(void** list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_add
+
+DESCRIPTION
+   Adds an element to the head of the linked list. The passed in data pointer
+   is not modified or freed. Passed in data_obj is expected to live throughout
+   the use of the linked_list (i.e. data is not allocated internally)
+
+   p_list_data:  List to add data to the head of.
+   data_obj:     Pointer to data to add into list
+   dealloc:      Function used to deallocate memory for this element. Pass NULL
+                 if you do not want data deallocated during a flush operation
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_add(void* list_data, void *data_obj, void (*dealloc)(void*));
+
+/*===========================================================================
+FUNCTION    linked_list_remove
+
+DESCRIPTION
+   Retrieves data from the list tail. data_obj is the tail element from the list
+   passed in by linked_list_add.
+
+   p_list_data:  List to remove the tail from.
+   data_obj:     Pointer to data removed from list
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_remove(void* list_data, void **data_obj);
+
+/*===========================================================================
+FUNCTION    linked_list_empty
+
+DESCRIPTION
+   Tells whether the list currently contains any elements
+
+   p_list_data:  List to check if empty.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0/FALSE : List contains elements
+   1/TRUE  : List is Empty
+   Otherwise look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+int linked_list_empty(void* list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_flush
+
+DESCRIPTION
+   Removes all elements from the list and deallocates them using the provided
+   dealloc function while adding elements.
+
+   p_list_data:  List to remove all elements from.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_flush(void* list_data);
+
+/*===========================================================================
+FUNCTION    linked_list_search
+
+DESCRIPTION
+   Searches for an element in the linked list.
+
+   p_list_data:  List handle.
+   data_p:       to be stored with the data found; NUll if no match.
+                 if data_p passed in as NULL, then no write to it.
+   equal:        Function ptr takes in a list element, and returns
+                 indication if this the one looking for.
+   data_0:       The data being compared against.
+   rm_if_found:  Should data be removed if found?
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+linked_list_err_type linked_list_search(void* list_data, void **data_p,
+                                        bool (*equal)(void* data_0, void* data),
+                                        void* data_0, bool rm_if_found);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __LINKED_LIST_H__ */
diff --git a/sdm845/utils/loc_cfg.cpp b/sdm845/utils/loc_cfg.cpp
new file mode 100644
index 0000000..d2364f6
--- /dev/null
+++ b/sdm845/utils/loc_cfg.cpp
@@ -0,0 +1,400 @@
+/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_utils_cfg"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <time.h>
+#include <loc_cfg.h>
+#include <platform_lib_includes.h>
+#include <loc_misc_utils.h>
+#ifdef USE_GLIB
+#include <glib.h>
+#endif
+#include "platform_lib_includes.h"
+
+/*=============================================================================
+ *
+ *                          GLOBAL DATA DECLARATION
+ *
+ *============================================================================*/
+
+/* Parameter data */
+static uint32_t DEBUG_LEVEL = 0xff;
+static uint32_t TIMESTAMP = 0;
+
+/* Parameter spec table */
+static const loc_param_s_type loc_param_table[] =
+{
+    {"DEBUG_LEVEL",    &DEBUG_LEVEL, NULL,    'n'},
+    {"TIMESTAMP",      &TIMESTAMP,   NULL,    'n'},
+};
+static const int loc_param_num = sizeof(loc_param_table) / sizeof(loc_param_s_type);
+
+typedef struct loc_param_v_type
+{
+    char* param_name;
+    char* param_str_value;
+    int param_int_value;
+    double param_double_value;
+}loc_param_v_type;
+
+/*===========================================================================
+FUNCTION loc_set_config_entry
+
+DESCRIPTION
+   Potentially sets a given configuration table entry based on the passed in
+   configuration value. This is done by using a string comparison of the
+   parameter names and those found in the configuration file.
+
+PARAMETERS:
+   config_entry: configuration entry in the table to possibly set
+   config_value: value to store in the entry if the parameter names match
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_set_config_entry(const loc_param_s_type* config_entry, loc_param_v_type* config_value)
+{
+    int ret=-1;
+    if(NULL == config_entry || NULL == config_value)
+    {
+        LOC_LOGE("%s: INVALID config entry or parameter", __FUNCTION__);
+        return ret;
+    }
+
+    if (strcmp(config_entry->param_name, config_value->param_name) == 0 &&
+        config_entry->param_ptr)
+    {
+        switch (config_entry->param_type)
+        {
+        case 's':
+            if (strcmp(config_value->param_str_value, "NULL") == 0)
+            {
+                *((char*)config_entry->param_ptr) = '\0';
+            }
+            else {
+                strlcpy((char*) config_entry->param_ptr,
+                        config_value->param_str_value,
+                        LOC_MAX_PARAM_STRING + 1);
+            }
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %s", __FUNCTION__,
+                     config_entry->param_name, (char*)config_entry->param_ptr);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        case 'n':
+            *((int *)config_entry->param_ptr) = config_value->param_int_value;
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %d", __FUNCTION__,
+                     config_entry->param_name, config_value->param_int_value);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        case 'f':
+            *((double *)config_entry->param_ptr) = config_value->param_double_value;
+            /* Log INI values */
+            LOC_LOGD("%s: PARAM %s = %f", __FUNCTION__,
+                     config_entry->param_name, config_value->param_double_value);
+
+            if(NULL != config_entry->param_set)
+            {
+                *(config_entry->param_set) = 1;
+            }
+            ret = 0;
+            break;
+        default:
+            LOC_LOGE("%s: PARAM %s parameter type must be n, f, or s",
+                     __FUNCTION__, config_entry->param_name);
+        }
+    }
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_fill_conf_item
+
+DESCRIPTION
+   Takes a line of configuration item and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   input_buf : buffer contanis config item
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0: Number of records in the config_table filled with input_buf
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_fill_conf_item(char* input_buf,
+                       const loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret = 0;
+
+    if (input_buf && config_table) {
+        char *lasts;
+        loc_param_v_type config_value;
+        memset(&config_value, 0, sizeof(config_value));
+
+        /* Separate variable and value */
+        config_value.param_name = strtok_r(input_buf, "=", &lasts);
+        /* skip lines that do not contain "=" */
+        if (config_value.param_name) {
+            config_value.param_str_value = strtok_r(NULL, "=", &lasts);
+
+            /* skip lines that do not contain two operands */
+            if (config_value.param_str_value) {
+                /* Trim leading and trailing spaces */
+                loc_util_trim_space(config_value.param_name);
+                loc_util_trim_space(config_value.param_str_value);
+
+                /* Parse numerical value */
+                if ((strlen(config_value.param_str_value) >=3) &&
+                    (config_value.param_str_value[0] == '0') &&
+                    (tolower(config_value.param_str_value[1]) == 'x'))
+                {
+                    /* hex */
+                    config_value.param_int_value = (int) strtol(&config_value.param_str_value[2],
+                                                                (char**) NULL, 16);
+                }
+                else {
+                    config_value.param_double_value = (double) atof(config_value.param_str_value); /* float */
+                    config_value.param_int_value = atoi(config_value.param_str_value); /* dec */
+                }
+
+                for(uint32_t i = 0; NULL != config_table && i < table_length; i++)
+                {
+                    if(!loc_set_config_entry(&config_table[i], &config_value)) {
+                        ret += 1;
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_read_conf_r (repetitive)
+
+DESCRIPTION
+   Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+   The difference between this and loc_read_conf is that this function returns
+   the file pointer position at the end of filling a config table. Also, it
+   reads a fixed number of parameters at a time which is equal to the length
+   of the configuration table. This functionality enables the caller to
+   repeatedly call the function to read data from the same file.
+
+PARAMETERS:
+   conf_fp : file pointer
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   0: Table filled successfully
+   1: No more parameters to read
+  -1: Error filling table
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_read_conf_r(FILE *conf_fp, const loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret=0;
+
+    unsigned int num_params=table_length;
+    if(conf_fp == NULL) {
+        LOC_LOGE("%s:%d]: ERROR: File pointer is NULL\n", __func__, __LINE__);
+        ret = -1;
+        goto err;
+    }
+
+    /* Clear all validity bits */
+    for(uint32_t i = 0; NULL != config_table && i < table_length; i++)
+    {
+        if(NULL != config_table[i].param_set)
+        {
+            *(config_table[i].param_set) = 0;
+        }
+    }
+
+    char input_buf[LOC_MAX_PARAM_LINE];  /* declare a char array */
+
+    LOC_LOGD("%s:%d]: num_params: %d\n", __func__, __LINE__, num_params);
+    while(num_params)
+    {
+        if(!fgets(input_buf, LOC_MAX_PARAM_LINE, conf_fp)) {
+            LOC_LOGD("%s:%d]: fgets returned NULL\n", __func__, __LINE__);
+            break;
+        }
+
+        num_params -= loc_fill_conf_item(input_buf, config_table, table_length);
+    }
+
+err:
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_udpate_conf
+
+DESCRIPTION
+   Parses the passed in buffer for configuration items, and update the table
+   that is also passed in.
+
+Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   conf_data: configuration items in bufferas a string
+   length: strlen(conf_data)
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   number of the records in the table that is updated at time of return.
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+int loc_update_conf(const char* conf_data, int32_t length,
+                    const loc_param_s_type* config_table, uint32_t table_length)
+{
+    int ret = -1;
+
+    if (conf_data && length && config_table && table_length) {
+        // make a copy, so we do not tokenize the original data
+        char* conf_copy = (char*)malloc(length+1);
+
+        if (conf_copy != NULL)
+        {
+            memcpy(conf_copy, conf_data, length);
+            // we hard NULL the end of string to be safe
+            conf_copy[length] = 0;
+
+            // start with one record off
+            uint32_t num_params = table_length - 1;
+            char* saveptr = NULL;
+            char* input_buf = strtok_r(conf_copy, "\n", &saveptr);
+            ret = 0;
+
+            LOC_LOGD("%s:%d]: num_params: %d\n", __func__, __LINE__, num_params);
+            while(num_params && input_buf) {
+                ret++;
+                num_params -= loc_fill_conf_item(input_buf, config_table, table_length);
+                input_buf = strtok_r(NULL, "\n", &saveptr);
+            }
+            free(conf_copy);
+        }
+    }
+
+    return ret;
+}
+
+/*===========================================================================
+FUNCTION loc_read_conf
+
+DESCRIPTION
+   Reads the specified configuration file and sets defined values based on
+   the passed in configuration table. This table maps strings to values to
+   set along with the type of each of these values.
+
+PARAMETERS:
+   conf_file_name: configuration file to read
+   config_table: table definition of strings to places to store information
+   table_length: length of the configuration table
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_read_conf(const char* conf_file_name, const loc_param_s_type* config_table,
+                   uint32_t table_length)
+{
+    FILE *conf_fp = NULL;
+    char *lasts;
+    loc_param_v_type config_value;
+    uint32_t i;
+
+    if((conf_fp = fopen(conf_file_name, "r")) != NULL)
+    {
+        LOC_LOGD("%s: using %s", __FUNCTION__, conf_file_name);
+        if(table_length && config_table) {
+            loc_read_conf_r(conf_fp, config_table, table_length);
+            rewind(conf_fp);
+        }
+        loc_read_conf_r(conf_fp, loc_param_table, loc_param_num);
+        fclose(conf_fp);
+    }
+    /* Initialize logging mechanism with parsed data */
+    loc_logger_init(DEBUG_LEVEL, TIMESTAMP);
+}
diff --git a/sdm845/utils/loc_cfg.h b/sdm845/utils/loc_cfg.h
new file mode 100644
index 0000000..9045e1d
--- /dev/null
+++ b/sdm845/utils/loc_cfg.h
@@ -0,0 +1,91 @@
+/* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_CFG_H
+#define LOC_CFG_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+#define LOC_MAX_PARAM_NAME                 80
+#define LOC_MAX_PARAM_STRING               80
+#define LOC_MAX_PARAM_LINE    (LOC_MAX_PARAM_NAME + LOC_MAX_PARAM_STRING)
+
+#define UTIL_UPDATE_CONF(conf_data, len, config_table) \
+    loc_update_conf((conf_data), (len), (config_table), \
+                    sizeof(config_table) / sizeof(config_table[0]))
+
+#define UTIL_READ_CONF_DEFAULT(filename) \
+    loc_read_conf((filename), NULL, 0);
+
+#define UTIL_READ_CONF(filename, config_table) \
+    loc_read_conf((filename), (config_table), sizeof(config_table) / sizeof(config_table[0]))
+
+/*=============================================================================
+ *
+ *                        MODULE TYPE DECLARATION
+ *
+ *============================================================================*/
+typedef struct
+{
+  const char                    *param_name;
+  void                          *param_ptr;
+  uint8_t                       *param_set;   /* was this value set by config file? */
+  char                           param_type;  /* 'n' for number,
+                                                 's' for string,
+                                                 'f' for float */
+} loc_param_s_type;
+
+/*=============================================================================
+ *
+ *                          MODULE EXTERNAL DATA
+ *
+ *============================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*=============================================================================
+ *
+ *                       MODULE EXPORTED FUNCTIONS
+ *
+ *============================================================================*/
+void loc_read_conf(const char* conf_file_name,
+                   const loc_param_s_type* config_table,
+                   uint32_t table_length);
+int loc_read_conf_r(FILE *conf_fp, const loc_param_s_type* config_table,
+                    uint32_t table_length);
+int loc_update_conf(const char* conf_data, int32_t length,
+                    const loc_param_s_type* config_table, uint32_t table_length);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LOC_CFG_H */
diff --git a/sdm845/utils/loc_gps.h b/sdm845/utils/loc_gps.h
new file mode 100644
index 0000000..e3f2182
--- /dev/null
+++ b/sdm845/utils/loc_gps.h
@@ -0,0 +1,2209 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LOC_GPS_H
+#define LOC_GPS_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <pthread.h>
+#include <sys/socket.h>
+#include <stdbool.h>
+
+__BEGIN_DECLS
+
+#define LOC_FLP_STATUS_LOCATION_AVAILABLE         0
+#define LOC_FLP_STATUS_LOCATION_UNAVAILABLE       1
+#define LOC_CAPABILITY_GNSS         (1U<<0)
+#define LOC_CAPABILITY_WIFI         (1U<<1)
+#define LOC_CAPABILITY_CELL         (1U<<3)
+
+/** Milliseconds since January 1, 1970 */
+typedef int64_t LocGpsUtcTime;
+
+/** Maximum number of SVs for loc_gps_sv_status_callback(). */
+#define LOC_GPS_MAX_SVS 32
+/** Maximum number of SVs for loc_gps_sv_status_callback(). */
+#define LOC_GNSS_MAX_SVS 64
+
+/** Maximum number of Measurements in loc_gps_measurement_callback(). */
+#define LOC_GPS_MAX_MEASUREMENT   32
+
+/** Maximum number of Measurements in loc_gnss_measurement_callback(). */
+#define LOC_GNSS_MAX_MEASUREMENT   64
+
+/** Requested operational mode for GPS operation. */
+typedef uint32_t LocGpsPositionMode;
+/* IMPORTANT: Note that the following values must match
+ * constants in GpsLocationProvider.java. */
+/** Mode for running GPS standalone (no assistance). */
+#define LOC_GPS_POSITION_MODE_STANDALONE    0
+/** AGPS MS-Based mode. */
+#define LOC_GPS_POSITION_MODE_MS_BASED      1
+/**
+ * AGPS MS-Assisted mode. This mode is not maintained by the platform anymore.
+ * It is strongly recommended to use LOC_GPS_POSITION_MODE_MS_BASED instead.
+ */
+#define LOC_GPS_POSITION_MODE_MS_ASSISTED   2
+
+/** Requested recurrence mode for GPS operation. */
+typedef uint32_t LocGpsPositionRecurrence;
+/* IMPORTANT: Note that the following values must match
+ * constants in GpsLocationProvider.java. */
+/** Receive GPS fixes on a recurring basis at a specified period. */
+#define LOC_GPS_POSITION_RECURRENCE_PERIODIC    0
+/** Request a single shot GPS fix. */
+#define LOC_GPS_POSITION_RECURRENCE_SINGLE      1
+
+/** GPS status event values. */
+typedef uint16_t LocGpsStatusValue;
+/* IMPORTANT: Note that the following values must match
+ * constants in GpsLocationProvider.java. */
+/** GPS status unknown. */
+#define LOC_GPS_STATUS_NONE             0
+/** GPS has begun navigating. */
+#define LOC_GPS_STATUS_SESSION_BEGIN    1
+/** GPS has stopped navigating. */
+#define LOC_GPS_STATUS_SESSION_END      2
+/** GPS has powered on but is not navigating. */
+#define LOC_GPS_STATUS_ENGINE_ON        3
+/** GPS is powered off. */
+#define LOC_GPS_STATUS_ENGINE_OFF       4
+
+/** Flags to indicate which values are valid in a LocGpsLocation. */
+typedef uint16_t LocGpsLocationFlags;
+/* IMPORTANT: Note that the following values must match
+ * constants in GpsLocationProvider.java. */
+/** LocGpsLocation has valid latitude and longitude. */
+#define LOC_GPS_LOCATION_HAS_LAT_LONG   0x0001
+/** LocGpsLocation has valid altitude. */
+#define LOC_GPS_LOCATION_HAS_ALTITUDE   0x0002
+/** LocGpsLocation has valid speed. */
+#define LOC_GPS_LOCATION_HAS_SPEED      0x0004
+/** LocGpsLocation has valid bearing. */
+#define LOC_GPS_LOCATION_HAS_BEARING    0x0008
+/** LocGpsLocation has valid accuracy. */
+#define LOC_GPS_LOCATION_HAS_ACCURACY   0x0010
+/** LocGpsLocation has valid vertical uncertainity */
+#define LOC_GPS_LOCATION_HAS_VERT_UNCERTAINITY   0x0020
+
+/** Flags for the loc_gps_set_capabilities callback. */
+
+/**
+ * GPS HAL schedules fixes for LOC_GPS_POSITION_RECURRENCE_PERIODIC mode. If this is
+ * not set, then the framework will use 1000ms for min_interval and will start
+ * and call start() and stop() to schedule the GPS.
+ */
+#define LOC_GPS_CAPABILITY_SCHEDULING       (1 << 0)
+/** GPS supports MS-Based AGPS mode */
+#define LOC_GPS_CAPABILITY_MSB              (1 << 1)
+/** GPS supports MS-Assisted AGPS mode */
+#define LOC_GPS_CAPABILITY_MSA              (1 << 2)
+/** GPS supports single-shot fixes */
+#define LOC_GPS_CAPABILITY_SINGLE_SHOT      (1 << 3)
+/** GPS supports on demand time injection */
+#define LOC_GPS_CAPABILITY_ON_DEMAND_TIME   (1 << 4)
+/** GPS supports Geofencing  */
+#define LOC_GPS_CAPABILITY_GEOFENCING       (1 << 5)
+/** GPS supports Measurements. */
+#define LOC_GPS_CAPABILITY_MEASUREMENTS     (1 << 6)
+/** GPS supports Navigation Messages */
+#define LOC_GPS_CAPABILITY_NAV_MESSAGES     (1 << 7)
+
+/**
+ * Flags used to specify which aiding data to delete when calling
+ * delete_aiding_data().
+ */
+typedef uint16_t LocGpsAidingData;
+/* IMPORTANT: Note that the following values must match
+ * constants in GpsLocationProvider.java. */
+#define LOC_GPS_DELETE_EPHEMERIS        0x0001
+#define LOC_GPS_DELETE_ALMANAC          0x0002
+#define LOC_GPS_DELETE_POSITION         0x0004
+#define LOC_GPS_DELETE_TIME             0x0008
+#define LOC_GPS_DELETE_IONO             0x0010
+#define LOC_GPS_DELETE_UTC              0x0020
+#define LOC_GPS_DELETE_HEALTH           0x0040
+#define LOC_GPS_DELETE_SVDIR            0x0080
+#define LOC_GPS_DELETE_SVSTEER          0x0100
+#define LOC_GPS_DELETE_SADATA           0x0200
+#define LOC_GPS_DELETE_RTI              0x0400
+#define LOC_GPS_DELETE_CELLDB_INFO      0x8000
+#define LOC_GPS_DELETE_ALL              0xFFFF
+
+/** AGPS type */
+typedef uint16_t LocAGpsType;
+#define LOC_AGPS_TYPE_SUPL          1
+#define LOC_AGPS_TYPE_C2K           2
+
+typedef uint16_t LocAGpsSetIDType;
+#define LOC_AGPS_SETID_TYPE_NONE    0
+#define LOC_AGPS_SETID_TYPE_IMSI    1
+#define LOC_AGPS_SETID_TYPE_MSISDN  2
+
+typedef uint16_t LocApnIpType;
+#define LOC_APN_IP_INVALID          0
+#define LOC_APN_IP_IPV4             1
+#define LOC_APN_IP_IPV6             2
+#define LOC_APN_IP_IPV4V6           3
+
+/**
+ * String length constants
+ */
+#define LOC_GPS_NI_SHORT_STRING_MAXLEN      256
+#define LOC_GPS_NI_LONG_STRING_MAXLEN       2048
+
+/**
+ * LocGpsNiType constants
+ */
+typedef uint32_t LocGpsNiType;
+#define LOC_GPS_NI_TYPE_VOICE              1
+#define LOC_GPS_NI_TYPE_UMTS_SUPL          2
+#define LOC_GPS_NI_TYPE_UMTS_CTRL_PLANE    3
+/*Emergency SUPL*/
+#define LOC_GPS_NI_TYPE_EMERGENCY_SUPL     4
+
+/**
+ * LocGpsNiNotifyFlags constants
+ */
+typedef uint32_t LocGpsNiNotifyFlags;
+/** NI requires notification */
+#define LOC_GPS_NI_NEED_NOTIFY          0x0001
+/** NI requires verification */
+#define LOC_GPS_NI_NEED_VERIFY          0x0002
+/** NI requires privacy override, no notification/minimal trace */
+#define LOC_GPS_NI_PRIVACY_OVERRIDE     0x0004
+
+/**
+ * GPS NI responses, used to define the response in
+ * NI structures
+ */
+typedef int LocGpsUserResponseType;
+#define LOC_GPS_NI_RESPONSE_ACCEPT         1
+#define LOC_GPS_NI_RESPONSE_DENY           2
+#define LOC_GPS_NI_RESPONSE_NORESP         3
+
+/**
+ * NI data encoding scheme
+ */
+typedef int LocGpsNiEncodingType;
+#define LOC_GPS_ENC_NONE                   0
+#define LOC_GPS_ENC_SUPL_GSM_DEFAULT       1
+#define LOC_GPS_ENC_SUPL_UTF8              2
+#define LOC_GPS_ENC_SUPL_UCS2              3
+#define LOC_GPS_ENC_UNKNOWN                -1
+
+/** AGPS status event values. */
+typedef uint16_t LocAGpsStatusValue;
+/** GPS requests data connection for AGPS. */
+#define LOC_GPS_REQUEST_AGPS_DATA_CONN  1
+/** GPS releases the AGPS data connection. */
+#define LOC_GPS_RELEASE_AGPS_DATA_CONN  2
+/** AGPS data connection initiated */
+#define LOC_GPS_AGPS_DATA_CONNECTED     3
+/** AGPS data connection completed */
+#define LOC_GPS_AGPS_DATA_CONN_DONE     4
+/** AGPS data connection failed */
+#define LOC_GPS_AGPS_DATA_CONN_FAILED   5
+
+typedef uint16_t LocAGpsRefLocationType;
+#define LOC_AGPS_REF_LOCATION_TYPE_GSM_CELLID   1
+#define LOC_AGPS_REF_LOCATION_TYPE_UMTS_CELLID  2
+#define LOC_AGPS_REF_LOCATION_TYPE_MAC          3
+#define LOC_AGPS_REF_LOCATION_TYPE_LTE_CELLID   4
+
+/* Deprecated, to be removed in the next Android release. */
+#define LOC_AGPS_REG_LOCATION_TYPE_MAC          3
+
+/** Network types for update_network_state "type" parameter */
+#define LOC_AGPS_RIL_NETWORK_TYPE_MOBILE        0
+#define LOC_AGPS_RIL_NETWORK_TYPE_WIFI          1
+#define LOC_AGPS_RIL_NETWORK_TYPE_MOBILE_MMS    2
+#define LOC_AGPS_RIL_NETWORK_TYPE_MOBILE_SUPL   3
+#define LOC_AGPS_RIL_NETWORK_TTYPE_MOBILE_DUN   4
+#define LOC_AGPS_RIL_NETWORK_TTYPE_MOBILE_HIPRI 5
+#define LOC_AGPS_RIL_NETWORK_TTYPE_WIMAX        6
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint16_t LocGpsClockFlags;
+#define LOC_GPS_CLOCK_HAS_LEAP_SECOND               (1<<0)
+#define LOC_GPS_CLOCK_HAS_TIME_UNCERTAINTY          (1<<1)
+#define LOC_GPS_CLOCK_HAS_FULL_BIAS                 (1<<2)
+#define LOC_GPS_CLOCK_HAS_BIAS                      (1<<3)
+#define LOC_GPS_CLOCK_HAS_BIAS_UNCERTAINTY          (1<<4)
+#define LOC_GPS_CLOCK_HAS_DRIFT                     (1<<5)
+#define LOC_GPS_CLOCK_HAS_DRIFT_UNCERTAINTY         (1<<6)
+
+/**
+ * Flags to indicate what fields in LocGnssClock are valid.
+ */
+typedef uint16_t LocGnssClockFlags;
+/** A valid 'leap second' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_LEAP_SECOND               (1<<0)
+/** A valid 'time uncertainty' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_TIME_UNCERTAINTY          (1<<1)
+/** A valid 'full bias' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_FULL_BIAS                 (1<<2)
+/** A valid 'bias' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_BIAS                      (1<<3)
+/** A valid 'bias uncertainty' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_BIAS_UNCERTAINTY          (1<<4)
+/** A valid 'drift' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_DRIFT                     (1<<5)
+/** A valid 'drift uncertainty' is stored in the data structure. */
+#define LOC_GNSS_CLOCK_HAS_DRIFT_UNCERTAINTY         (1<<6)
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint8_t LocGpsClockType;
+#define LOC_GPS_CLOCK_TYPE_UNKNOWN                  0
+#define LOC_GPS_CLOCK_TYPE_LOCAL_HW_TIME            1
+#define LOC_GPS_CLOCK_TYPE_GPS_TIME                 2
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint32_t LocGpsMeasurementFlags;
+#define LOC_GPS_MEASUREMENT_HAS_SNR                               (1<<0)
+#define LOC_GPS_MEASUREMENT_HAS_ELEVATION                         (1<<1)
+#define LOC_GPS_MEASUREMENT_HAS_ELEVATION_UNCERTAINTY             (1<<2)
+#define LOC_GPS_MEASUREMENT_HAS_AZIMUTH                           (1<<3)
+#define LOC_GPS_MEASUREMENT_HAS_AZIMUTH_UNCERTAINTY               (1<<4)
+#define LOC_GPS_MEASUREMENT_HAS_PSEUDORANGE                       (1<<5)
+#define LOC_GPS_MEASUREMENT_HAS_PSEUDORANGE_UNCERTAINTY           (1<<6)
+#define LOC_GPS_MEASUREMENT_HAS_CODE_PHASE                        (1<<7)
+#define LOC_GPS_MEASUREMENT_HAS_CODE_PHASE_UNCERTAINTY            (1<<8)
+#define LOC_GPS_MEASUREMENT_HAS_CARRIER_FREQUENCY                 (1<<9)
+#define LOC_GPS_MEASUREMENT_HAS_CARRIER_CYCLES                    (1<<10)
+#define LOC_GPS_MEASUREMENT_HAS_CARRIER_PHASE                     (1<<11)
+#define LOC_GPS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY         (1<<12)
+#define LOC_GPS_MEASUREMENT_HAS_BIT_NUMBER                        (1<<13)
+#define LOC_GPS_MEASUREMENT_HAS_TIME_FROM_LAST_BIT                (1<<14)
+#define LOC_GPS_MEASUREMENT_HAS_DOPPLER_SHIFT                     (1<<15)
+#define LOC_GPS_MEASUREMENT_HAS_DOPPLER_SHIFT_UNCERTAINTY         (1<<16)
+#define LOC_GPS_MEASUREMENT_HAS_USED_IN_FIX                       (1<<17)
+#define LOC_GPS_MEASUREMENT_HAS_UNCORRECTED_PSEUDORANGE_RATE      (1<<18)
+
+/**
+ * Flags to indicate what fields in LocGnssMeasurement are valid.
+ */
+typedef uint32_t LocGnssMeasurementFlags;
+/** A valid 'snr' is stored in the data structure. */
+#define LOC_GNSS_MEASUREMENT_HAS_SNR                               (1<<0)
+/** A valid 'carrier frequency' is stored in the data structure. */
+#define LOC_GNSS_MEASUREMENT_HAS_CARRIER_FREQUENCY                 (1<<9)
+/** A valid 'carrier cycles' is stored in the data structure. */
+#define LOC_GNSS_MEASUREMENT_HAS_CARRIER_CYCLES                    (1<<10)
+/** A valid 'carrier phase' is stored in the data structure. */
+#define LOC_GNSS_MEASUREMENT_HAS_CARRIER_PHASE                     (1<<11)
+/** A valid 'carrier phase uncertainty' is stored in the data structure. */
+#define LOC_GNSS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY         (1<<12)
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint8_t LocGpsLossOfLock;
+#define LOC_GPS_LOSS_OF_LOCK_UNKNOWN                            0
+#define LOC_GPS_LOSS_OF_LOCK_OK                                 1
+#define LOC_GPS_LOSS_OF_LOCK_CYCLE_SLIP                         2
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. Use LocGnssMultipathIndicator instead.
+ */
+typedef uint8_t LocGpsMultipathIndicator;
+#define LOC_GPS_MULTIPATH_INDICATOR_UNKNOWN                 0
+#define LOC_GPS_MULTIPATH_INDICATOR_DETECTED                1
+#define LOC_GPS_MULTIPATH_INDICATOR_NOT_USED                2
+
+/**
+ * Enumeration of available values for the GNSS Measurement's multipath
+ * indicator.
+ */
+typedef uint8_t LocGnssMultipathIndicator;
+/** The indicator is not available or unknown. */
+#define LOC_GNSS_MULTIPATH_INDICATOR_UNKNOWN                 0
+/** The measurement is indicated to be affected by multipath. */
+#define LOC_GNSS_MULTIPATH_INDICATOR_PRESENT                 1
+/** The measurement is indicated to be not affected by multipath. */
+#define LOC_GNSS_MULTIPATH_INDICATOR_NOT_PRESENT             2
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint16_t LocGpsMeasurementState;
+#define LOC_GPS_MEASUREMENT_STATE_UNKNOWN                   0
+#define LOC_GPS_MEASUREMENT_STATE_CODE_LOCK             (1<<0)
+#define LOC_GPS_MEASUREMENT_STATE_BIT_SYNC              (1<<1)
+#define LOC_GPS_MEASUREMENT_STATE_SUBFRAME_SYNC         (1<<2)
+#define LOC_GPS_MEASUREMENT_STATE_TOW_DECODED           (1<<3)
+#define LOC_GPS_MEASUREMENT_STATE_MSEC_AMBIGUOUS        (1<<4)
+
+/**
+ * Flags indicating the GNSS measurement state.
+ *
+ * The expected behavior here is for GPS HAL to set all the flags that applies.
+ * For example, if the state for a satellite is only C/A code locked and bit
+ * synchronized, and there is still millisecond ambiguity, the state should be
+ * set as:
+ *
+ * LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK | LOC_GNSS_MEASUREMENT_STATE_BIT_SYNC |
+ *         LOC_GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS
+ *
+ * If GNSS is still searching for a satellite, the corresponding state should be
+ * set to LOC_GNSS_MEASUREMENT_STATE_UNKNOWN(0).
+ */
+typedef uint32_t LocGnssMeasurementState;
+#define LOC_GNSS_MEASUREMENT_STATE_UNKNOWN                   0
+#define LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK             (1<<0)
+#define LOC_GNSS_MEASUREMENT_STATE_BIT_SYNC              (1<<1)
+#define LOC_GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC         (1<<2)
+#define LOC_GNSS_MEASUREMENT_STATE_TOW_DECODED           (1<<3)
+#define LOC_GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS        (1<<4)
+#define LOC_GNSS_MEASUREMENT_STATE_SYMBOL_SYNC           (1<<5)
+#define LOC_GNSS_MEASUREMENT_STATE_GLO_STRING_SYNC       (1<<6)
+#define LOC_GNSS_MEASUREMENT_STATE_GLO_TOD_DECODED       (1<<7)
+#define LOC_GNSS_MEASUREMENT_STATE_BDS_D2_BIT_SYNC       (1<<8)
+#define LOC_GNSS_MEASUREMENT_STATE_BDS_D2_SUBFRAME_SYNC  (1<<9)
+#define LOC_GNSS_MEASUREMENT_STATE_GAL_E1BC_CODE_LOCK    (1<<10)
+#define LOC_GNSS_MEASUREMENT_STATE_GAL_E1C_2ND_CODE_LOCK (1<<11)
+#define LOC_GNSS_MEASUREMENT_STATE_GAL_E1B_PAGE_SYNC     (1<<12)
+#define LOC_GNSS_MEASUREMENT_STATE_SBAS_SYNC             (1<<13)
+
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint16_t LocGpsAccumulatedDeltaRangeState;
+#define LOC_GPS_ADR_STATE_UNKNOWN                       0
+#define LOC_GPS_ADR_STATE_VALID                     (1<<0)
+#define LOC_GPS_ADR_STATE_RESET                     (1<<1)
+#define LOC_GPS_ADR_STATE_CYCLE_SLIP                (1<<2)
+
+/**
+ * Flags indicating the Accumulated Delta Range's states.
+ */
+typedef uint16_t LocGnssAccumulatedDeltaRangeState;
+#define LOC_GNSS_ADR_STATE_UNKNOWN                       0
+#define LOC_GNSS_ADR_STATE_VALID                     (1<<0)
+#define LOC_GNSS_ADR_STATE_RESET                     (1<<1)
+#define LOC_GNSS_ADR_STATE_CYCLE_SLIP                (1<<2)
+
+#if 0
+/* The following typedef together with its constants below are deprecated, and
+ * will be removed in the next release. */
+typedef uint8_t GpsNavigationMessageType;
+#define GPS_NAVIGATION_MESSAGE_TYPE_UNKNOWN         0
+#define GPS_NAVIGATION_MESSAGE_TYPE_L1CA            1
+#define GPS_NAVIGATION_MESSAGE_TYPE_L2CNAV          2
+#define GPS_NAVIGATION_MESSAGE_TYPE_L5CNAV          3
+#define GPS_NAVIGATION_MESSAGE_TYPE_CNAV2           4
+
+/**
+ * Enumeration of available values to indicate the GNSS Navigation message
+ * types.
+ *
+ * For convenience, first byte is the LocGnssConstellationType on which that signal
+ * is typically transmitted
+ */
+typedef int16_t GnssNavigationMessageType;
+
+#define GNSS_NAVIGATION_MESSAGE_TYPE_UNKNOWN       0
+/** GPS L1 C/A message contained in the structure.  */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L1CA      0x0101
+/** GPS L2-CNAV message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L2CNAV    0x0102
+/** GPS L5-CNAV message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L5CNAV    0x0103
+/** GPS CNAV-2 message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_CNAV2     0x0104
+/** Glonass L1 CA message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GLO_L1CA      0x0301
+/** Beidou D1 message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_BDS_D1        0x0501
+/** Beidou D2 message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_BDS_D2        0x0502
+/** Galileo I/NAV message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GAL_I         0x0601
+/** Galileo F/NAV message contained in the structure. */
+#define GNSS_NAVIGATION_MESSAGE_TYPE_GAL_F         0x0602
+
+/**
+ * Status of Navigation Message
+ * When a message is received properly without any parity error in its navigation words, the
+ * status should be set to NAV_MESSAGE_STATUS_PARITY_PASSED. But if a message is received
+ * with words that failed parity check, but GPS is able to correct those words, the status
+ * should be set to NAV_MESSAGE_STATUS_PARITY_REBUILT.
+ * No need to send any navigation message that contains words with parity error and cannot be
+ * corrected.
+ */
+typedef uint16_t NavigationMessageStatus;
+#define NAV_MESSAGE_STATUS_UNKNOWN              0
+#define NAV_MESSAGE_STATUS_PARITY_PASSED   (1<<0)
+#define NAV_MESSAGE_STATUS_PARITY_REBUILT  (1<<1)
+
+/* This constant is deprecated, and will be removed in the next release. */
+#define NAV_MESSAGE_STATUS_UNKONW              0
+#endif
+
+/**
+ * Flags that indicate information about the satellite
+ */
+typedef uint8_t                                 LocGnssSvFlags;
+#define LOC_GNSS_SV_FLAGS_NONE                      0
+#define LOC_GNSS_SV_FLAGS_HAS_EPHEMERIS_DATA        (1 << 0)
+#define LOC_GNSS_SV_FLAGS_HAS_ALMANAC_DATA          (1 << 1)
+#define LOC_GNSS_SV_FLAGS_USED_IN_FIX               (1 << 2)
+
+/**
+ * Constellation type of LocGnssSvInfo
+ */
+typedef uint8_t                         LocGnssConstellationType;
+#define LOC_GNSS_CONSTELLATION_UNKNOWN      0
+#define LOC_GNSS_CONSTELLATION_GPS          1
+#define LOC_GNSS_CONSTELLATION_SBAS         2
+#define LOC_GNSS_CONSTELLATION_GLONASS      3
+#define LOC_GNSS_CONSTELLATION_QZSS         4
+#define LOC_GNSS_CONSTELLATION_BEIDOU       5
+#define LOC_GNSS_CONSTELLATION_GALILEO      6
+
+/**
+ * Name for the GPS XTRA interface.
+ */
+#define LOC_GPS_XTRA_INTERFACE      "gps-xtra"
+
+/**
+ * Name for the GPS DEBUG interface.
+ */
+#define LOC_GPS_DEBUG_INTERFACE      "gps-debug"
+
+/**
+ * Name for the AGPS interface.
+ */
+
+#define LOC_AGPS_INTERFACE      "agps"
+
+/**
+ * Name of the Supl Certificate interface.
+ */
+#define LOC_SUPL_CERTIFICATE_INTERFACE  "supl-certificate"
+
+/**
+ * Name for NI interface
+ */
+#define LOC_GPS_NI_INTERFACE "gps-ni"
+
+/**
+ * Name for the AGPS-RIL interface.
+ */
+#define LOC_AGPS_RIL_INTERFACE      "agps_ril"
+
+/**
+ * Name for the GPS_Geofencing interface.
+ */
+#define LOC_GPS_GEOFENCING_INTERFACE   "gps_geofencing"
+
+/**
+ * Name of the GPS Measurements interface.
+ */
+#define LOC_GPS_MEASUREMENT_INTERFACE   "gps_measurement"
+
+/**
+ * Name of the GPS navigation message interface.
+ */
+#define LOC_GPS_NAVIGATION_MESSAGE_INTERFACE     "gps_navigation_message"
+
+/**
+ * Name of the GNSS/GPS configuration interface.
+ */
+#define LOC_GNSS_CONFIGURATION_INTERFACE     "gnss_configuration"
+
+/** Represents a location. */
+typedef struct {
+    /** set to sizeof(LocGpsLocation) */
+    size_t          size;
+    /** Contains LocGpsLocationFlags bits. */
+    uint16_t        flags;
+    /** Represents latitude in degrees. */
+    double          latitude;
+    /** Represents longitude in degrees. */
+    double          longitude;
+    /**
+     * Represents altitude in meters above the WGS 84 reference ellipsoid.
+     */
+    double          altitude;
+    /** Represents speed in meters per second. */
+    float           speed;
+    /** Represents heading in degrees. */
+    float           bearing;
+    /** Represents expected accuracy in meters. */
+    float           accuracy;
+    /** Represents the expected vertical uncertainity in meters*/
+    float           vertUncertainity;
+    /** Timestamp for the location fix. */
+    LocGpsUtcTime      timestamp;
+} LocGpsLocation;
+
+/** Represents the status. */
+typedef struct {
+    /** set to sizeof(LocGpsStatus) */
+    size_t          size;
+    LocGpsStatusValue status;
+} LocGpsStatus;
+
+/**
+ * Legacy struct to represents SV information.
+ * Deprecated, to be removed in the next Android release.
+ * Use LocGnssSvInfo instead.
+ */
+typedef struct {
+    /** set to sizeof(LocGpsSvInfo) */
+    size_t          size;
+    /** Pseudo-random number for the SV. */
+    int     prn;
+    /** Signal to noise ratio. */
+    float   snr;
+    /** Elevation of SV in degrees. */
+    float   elevation;
+    /** Azimuth of SV in degrees. */
+    float   azimuth;
+} LocGpsSvInfo;
+
+typedef struct {
+    /** set to sizeof(LocGnssSvInfo) */
+    size_t size;
+
+    /**
+     * Pseudo-random number for the SV, or FCN/OSN number for Glonass. The
+     * distinction is made by looking at constellation field. Values should be
+     * in the range of:
+     *
+     * - GPS:     1-32
+     * - SBAS:    120-151, 183-192
+     * - GLONASS: 1-24, the orbital slot number (OSN), if known.  Or, if not:
+     *            93-106, the frequency channel number (FCN) (-7 to +6) offset by + 100
+     *            i.e. report an FCN of -7 as 93, FCN of 0 as 100, and FCN of +6 as 106.
+     * - QZSS:    193-200
+     * - Galileo: 1-36
+     * - Beidou:  1-37
+     */
+    int16_t svid;
+
+    /**
+     * Defines the constellation of the given SV. Value should be one of those
+     * LOC_GNSS_CONSTELLATION_* constants
+     */
+    LocGnssConstellationType constellation;
+
+    /**
+     * Carrier-to-noise density in dB-Hz, typically in the range [0, 63].
+     * It contains the measured C/N0 value for the signal at the antenna port.
+     *
+     * This is a mandatory value.
+     */
+    float c_n0_dbhz;
+
+    /** Elevation of SV in degrees. */
+    float elevation;
+
+    /** Azimuth of SV in degrees. */
+    float azimuth;
+
+    /**
+     * Contains additional data about the given SV. Value should be one of those
+     * LOC_GNSS_SV_FLAGS_* constants
+     */
+    LocGnssSvFlags flags;
+
+} LocGnssSvInfo;
+
+/**
+ * Legacy struct to represents SV status.
+ * Deprecated, to be removed in the next Android release.
+ * Use LocGnssSvStatus instead.
+ */
+typedef struct {
+    /** set to sizeof(LocGpsSvStatus) */
+    size_t size;
+    int num_svs;
+    LocGpsSvInfo sv_list[LOC_GPS_MAX_SVS];
+    uint32_t ephemeris_mask;
+    uint32_t almanac_mask;
+    uint32_t used_in_fix_mask;
+} LocGpsSvStatus;
+
+/**
+ * Represents SV status.
+ */
+typedef struct {
+    /** set to sizeof(LocGnssSvStatus) */
+    size_t size;
+
+    /** Number of GPS SVs currently visible, refers to the SVs stored in sv_list */
+    int num_svs;
+    /**
+     * Pointer to an array of SVs information for all GNSS constellations,
+     * except GPS, which is reported using sv_list
+     */
+    LocGnssSvInfo gnss_sv_list[LOC_GNSS_MAX_SVS];
+
+} LocGnssSvStatus;
+
+/* CellID for 2G, 3G and LTE, used in AGPS. */
+typedef struct {
+    LocAGpsRefLocationType type;
+    /** Mobile Country Code. */
+    uint16_t mcc;
+    /** Mobile Network Code .*/
+    uint16_t mnc;
+    /** Location Area Code in 2G, 3G and LTE. In 3G lac is discarded. In LTE,
+     * lac is populated with tac, to ensure that we don't break old clients that
+     * might rely in the old (wrong) behavior.
+     */
+    uint16_t lac;
+    /** Cell id in 2G. Utran Cell id in 3G. Cell Global Id EUTRA in LTE. */
+    uint32_t cid;
+    /** Tracking Area Code in LTE. */
+    uint16_t tac;
+    /** Physical Cell id in LTE (not used in 2G and 3G) */
+    uint16_t pcid;
+} LocAGpsRefLocationCellID;
+
+typedef struct {
+    uint8_t mac[6];
+} LocAGpsRefLocationMac;
+
+/** Represents ref locations */
+typedef struct {
+    LocAGpsRefLocationType type;
+    union {
+        LocAGpsRefLocationCellID   cellID;
+        LocAGpsRefLocationMac      mac;
+    } u;
+} LocAGpsRefLocation;
+
+/**
+ * Callback with location information. Can only be called from a thread created
+ * by create_thread_cb.
+ */
+typedef void (* loc_gps_location_callback)(LocGpsLocation* location);
+
+/**
+ * Callback with status information. Can only be called from a thread created by
+ * create_thread_cb.
+ */
+typedef void (* loc_gps_status_callback)(LocGpsStatus* status);
+/**
+ * Legacy callback with SV status information.
+ * Can only be called from a thread created by create_thread_cb.
+ *
+ * This callback is deprecated, and will be removed in the next release. Use
+ * loc_gnss_sv_status_callback() instead.
+ */
+typedef void (* loc_gps_sv_status_callback)(LocGpsSvStatus* sv_info);
+
+/**
+ * Callback with SV status information.
+ * Can only be called from a thread created by create_thread_cb.
+ */
+typedef void (* loc_gnss_sv_status_callback)(LocGnssSvStatus* sv_info);
+
+/**
+ * Callback for reporting NMEA sentences. Can only be called from a thread
+ * created by create_thread_cb.
+ */
+typedef void (* loc_gps_nmea_callback)(LocGpsUtcTime timestamp, const char* nmea, int length);
+
+/**
+ * Callback to inform framework of the GPS engine's capabilities. Capability
+ * parameter is a bit field of LOC_GPS_CAPABILITY_* flags.
+ */
+typedef void (* loc_gps_set_capabilities)(uint32_t capabilities);
+
+/**
+ * Callback utility for acquiring the GPS wakelock. This can be used to prevent
+ * the CPU from suspending while handling GPS events.
+ */
+typedef void (* loc_gps_acquire_wakelock)();
+
+/** Callback utility for releasing the GPS wakelock. */
+typedef void (* loc_gps_release_wakelock)();
+
+/** Callback for requesting NTP time */
+typedef void (* loc_gps_request_utc_time)();
+
+/**
+ * Callback for creating a thread that can call into the Java framework code.
+ * This must be used to create any threads that report events up to the
+ * framework.
+ */
+typedef pthread_t (* loc_gps_create_thread)(const char* name, void (*start)(void *), void* arg);
+
+/**
+ * Provides information about how new the underlying GPS/GNSS hardware and
+ * software is.
+ *
+ * This information will be available for Android Test Applications. If a GPS
+ * HAL does not provide this information, it will be considered "2015 or
+ * earlier".
+ *
+ * If a GPS HAL does provide this information, then newer years will need to
+ * meet newer CTS standards. E.g. if the date are 2016 or above, then N+ level
+ * LocGpsMeasurement support will be verified.
+ */
+typedef struct {
+    /** Set to sizeof(LocGnssSystemInfo) */
+    size_t   size;
+    /* year in which the last update was made to the underlying hardware/firmware
+     * used to capture GNSS signals, e.g. 2016 */
+    uint16_t year_of_hw;
+} LocGnssSystemInfo;
+
+/**
+ * Callback to inform framework of the engine's hardware version information.
+ */
+typedef void (*loc_gnss_set_system_info)(const LocGnssSystemInfo* info);
+
+/** New GPS callback structure. */
+typedef struct {
+    /** set to sizeof(LocGpsCallbacks) */
+    size_t      size;
+    loc_gps_location_callback location_cb;
+    loc_gps_status_callback status_cb;
+    loc_gps_sv_status_callback sv_status_cb;
+    loc_gps_nmea_callback nmea_cb;
+    loc_gps_set_capabilities set_capabilities_cb;
+    loc_gps_acquire_wakelock acquire_wakelock_cb;
+    loc_gps_release_wakelock release_wakelock_cb;
+    loc_gps_create_thread create_thread_cb;
+    loc_gps_request_utc_time request_utc_time_cb;
+
+    loc_gnss_set_system_info set_system_info_cb;
+    loc_gnss_sv_status_callback gnss_sv_status_cb;
+} LocGpsCallbacks;
+
+/** Represents the standard GPS interface. */
+typedef struct {
+    /** set to sizeof(LocGpsInterface) */
+    size_t          size;
+    /**
+     * Opens the interface and provides the callback routines
+     * to the implementation of this interface.
+     */
+    int   (*init)( LocGpsCallbacks* callbacks );
+
+    /** Starts navigating. */
+    int   (*start)( void );
+
+    /** Stops navigating. */
+    int   (*stop)( void );
+
+    /** Closes the interface. */
+    void  (*cleanup)( void );
+
+    /** Injects the current time. */
+    int   (*inject_time)(LocGpsUtcTime time, int64_t timeReference,
+                         int uncertainty);
+
+    /**
+     * Injects current location from another location provider (typically cell
+     * ID). Latitude and longitude are measured in degrees expected accuracy is
+     * measured in meters
+     */
+    int  (*inject_location)(double latitude, double longitude, float accuracy);
+
+    /**
+     * Specifies that the next call to start will not use the
+     * information defined in the flags. LOC_GPS_DELETE_ALL is passed for
+     * a cold start.
+     */
+    void  (*delete_aiding_data)(LocGpsAidingData flags);
+
+    /**
+     * min_interval represents the time between fixes in milliseconds.
+     * preferred_accuracy represents the requested fix accuracy in meters.
+     * preferred_time represents the requested time to first fix in milliseconds.
+     *
+     * 'mode' parameter should be one of LOC_GPS_POSITION_MODE_MS_BASED
+     * or LOC_GPS_POSITION_MODE_STANDALONE.
+     * It is allowed by the platform (and it is recommended) to fallback to
+     * LOC_GPS_POSITION_MODE_MS_BASED if LOC_GPS_POSITION_MODE_MS_ASSISTED is passed in, and
+     * LOC_GPS_POSITION_MODE_MS_BASED is supported.
+     */
+    int   (*set_position_mode)(LocGpsPositionMode mode, LocGpsPositionRecurrence recurrence,
+            uint32_t min_interval, uint32_t preferred_accuracy, uint32_t preferred_time);
+
+    /** Get a pointer to extension information. */
+    const void* (*get_extension)(const char* name);
+} LocGpsInterface;
+
+/**
+ * Callback to request the client to download XTRA data. The client should
+ * download XTRA data and inject it by calling inject_xtra_data(). Can only be
+ * called from a thread created by create_thread_cb.
+ */
+typedef void (* loc_gps_xtra_download_request)();
+
+/** Callback structure for the XTRA interface. */
+typedef struct {
+    loc_gps_xtra_download_request download_request_cb;
+    loc_gps_create_thread create_thread_cb;
+} LocGpsXtraCallbacks;
+
+/** Extended interface for XTRA support. */
+typedef struct {
+    /** set to sizeof(LocGpsXtraInterface) */
+    size_t          size;
+    /**
+     * Opens the XTRA interface and provides the callback routines
+     * to the implementation of this interface.
+     */
+    int  (*init)( LocGpsXtraCallbacks* callbacks );
+    /** Injects XTRA data into the GPS. */
+    int  (*inject_xtra_data)( char* data, int length );
+} LocGpsXtraInterface;
+
+#if 0
+/** Extended interface for DEBUG support. */
+typedef struct {
+    /** set to sizeof(LocGpsDebugInterface) */
+    size_t          size;
+
+    /**
+     * This function should return any information that the native
+     * implementation wishes to include in a bugreport.
+     */
+    size_t (*get_internal_state)(char* buffer, size_t bufferSize);
+} LocGpsDebugInterface;
+#endif
+
+/*
+ * Represents the status of AGPS augmented to support IPv4 and IPv6.
+ */
+typedef struct {
+    /** set to sizeof(LocAGpsStatus) */
+    size_t                  size;
+
+    LocAGpsType                type;
+    LocAGpsStatusValue         status;
+
+    /**
+     * Must be set to a valid IPv4 address if the field 'addr' contains an IPv4
+     * address, or set to INADDR_NONE otherwise.
+     */
+    uint32_t                ipaddr;
+
+    /**
+     * Must contain the IPv4 (AF_INET) or IPv6 (AF_INET6) address to report.
+     * Any other value of addr.ss_family will be rejected.
+     */
+    struct sockaddr_storage addr;
+} LocAGpsStatus;
+
+/**
+ * Callback with AGPS status information. Can only be called from a thread
+ * created by create_thread_cb.
+ */
+typedef void (* loc_agps_status_callback)(LocAGpsStatus* status);
+
+/** Callback structure for the AGPS interface. */
+typedef struct {
+    loc_agps_status_callback status_cb;
+    loc_gps_create_thread create_thread_cb;
+} LocAGpsCallbacks;
+
+/**
+ * Extended interface for AGPS support, it is augmented to enable to pass
+ * extra APN data.
+ */
+typedef struct {
+    /** set to sizeof(LocAGpsInterface) */
+    size_t size;
+
+    /**
+     * Opens the AGPS interface and provides the callback routines to the
+     * implementation of this interface.
+     */
+    void (*init)(LocAGpsCallbacks* callbacks);
+    /**
+     * Deprecated.
+     * If the HAL supports LocAGpsInterface_v2 this API will not be used, see
+     * data_conn_open_with_apn_ip_type for more information.
+     */
+    int (*data_conn_open)(const char* apn);
+    /**
+     * Notifies that the AGPS data connection has been closed.
+     */
+    int (*data_conn_closed)();
+    /**
+     * Notifies that a data connection is not available for AGPS.
+     */
+    int (*data_conn_failed)();
+    /**
+     * Sets the hostname and port for the AGPS server.
+     */
+    int (*set_server)(LocAGpsType type, const char* hostname, int port);
+
+    /**
+     * Notifies that a data connection is available and sets the name of the
+     * APN, and its IP type, to be used for SUPL connections.
+     */
+    int (*data_conn_open_with_apn_ip_type)(
+            const char* apn,
+            LocApnIpType apnIpType);
+} LocAGpsInterface;
+
+/** Error codes associated with certificate operations */
+#define LOC_AGPS_CERTIFICATE_OPERATION_SUCCESS               0
+#define LOC_AGPS_CERTIFICATE_ERROR_GENERIC                -100
+#define LOC_AGPS_CERTIFICATE_ERROR_TOO_MANY_CERTIFICATES  -101
+
+/** A data structure that represents an X.509 certificate using DER encoding */
+typedef struct {
+    size_t  length;
+    u_char* data;
+} LocDerEncodedCertificate;
+
+/**
+ * A type definition for SHA1 Fingerprints used to identify X.509 Certificates
+ * The Fingerprint is a digest of the DER Certificate that uniquely identifies it.
+ */
+typedef struct {
+    u_char data[20];
+} LocSha1CertificateFingerprint;
+
+/** AGPS Interface to handle SUPL certificate operations */
+typedef struct {
+    /** set to sizeof(LocSuplCertificateInterface) */
+    size_t size;
+
+    /**
+     * Installs a set of Certificates used for SUPL connections to the AGPS server.
+     * If needed the HAL should find out internally any certificates that need to be removed to
+     * accommodate the certificates to install.
+     * The certificates installed represent a full set of valid certificates needed to connect to
+     * AGPS SUPL servers.
+     * The list of certificates is required, and all must be available at the same time, when trying
+     * to establish a connection with the AGPS Server.
+     *
+     * Parameters:
+     *      certificates - A pointer to an array of DER encoded certificates that are need to be
+     *                     installed in the HAL.
+     *      length - The number of certificates to install.
+     * Returns:
+     *      LOC_AGPS_CERTIFICATE_OPERATION_SUCCESS if the operation is completed successfully
+     *      LOC_AGPS_CERTIFICATE_ERROR_TOO_MANY_CERTIFICATES if the HAL cannot store the number of
+     *          certificates attempted to be installed, the state of the certificates stored should
+     *          remain the same as before on this error case.
+     *
+     * IMPORTANT:
+     *      If needed the HAL should find out internally the set of certificates that need to be
+     *      removed to accommodate the certificates to install.
+     */
+    int  (*install_certificates) ( const LocDerEncodedCertificate* certificates, size_t length );
+
+    /**
+     * Notifies the HAL that a list of certificates used for SUPL connections are revoked. It is
+     * expected that the given set of certificates is removed from the internal store of the HAL.
+     *
+     * Parameters:
+     *      fingerprints - A pointer to an array of SHA1 Fingerprints to identify the set of
+     *                     certificates to revoke.
+     *      length - The number of fingerprints provided.
+     * Returns:
+     *      LOC_AGPS_CERTIFICATE_OPERATION_SUCCESS if the operation is completed successfully.
+     *
+     * IMPORTANT:
+     *      If any of the certificates provided (through its fingerprint) is not known by the HAL,
+     *      it should be ignored and continue revoking/deleting the rest of them.
+     */
+    int  (*revoke_certificates) ( const LocSha1CertificateFingerprint* fingerprints, size_t length );
+} LocSuplCertificateInterface;
+
+/** Represents an NI request */
+typedef struct {
+    /** set to sizeof(LocGpsNiNotification) */
+    size_t          size;
+
+    /**
+     * An ID generated by HAL to associate NI notifications and UI
+     * responses
+     */
+    int             notification_id;
+
+    /**
+     * An NI type used to distinguish different categories of NI
+     * events, such as LOC_GPS_NI_TYPE_VOICE, LOC_GPS_NI_TYPE_UMTS_SUPL, ...
+     */
+    LocGpsNiType       ni_type;
+
+    /**
+     * Notification/verification options, combinations of LocGpsNiNotifyFlags constants
+     */
+    LocGpsNiNotifyFlags notify_flags;
+
+    /**
+     * Timeout period to wait for user response.
+     * Set to 0 for no time out limit.
+     */
+    int             timeout;
+
+    /**
+     * Default response when time out.
+     */
+    LocGpsUserResponseType default_response;
+
+    /**
+     * Requestor ID
+     */
+    char            requestor_id[LOC_GPS_NI_SHORT_STRING_MAXLEN];
+
+    /**
+     * Notification message. It can also be used to store client_id in some cases
+     */
+    char            text[LOC_GPS_NI_LONG_STRING_MAXLEN];
+
+    /**
+     * Client name decoding scheme
+     */
+    LocGpsNiEncodingType requestor_id_encoding;
+
+    /**
+     * Client name decoding scheme
+     */
+    LocGpsNiEncodingType text_encoding;
+
+    /**
+     * A pointer to extra data. Format:
+     * key_1 = value_1
+     * key_2 = value_2
+     */
+    char           extras[LOC_GPS_NI_LONG_STRING_MAXLEN];
+
+} LocGpsNiNotification;
+
+/**
+ * Callback with NI notification. Can only be called from a thread created by
+ * create_thread_cb.
+ */
+typedef void (*loc_gps_ni_notify_callback)(LocGpsNiNotification *notification);
+
+/** GPS NI callback structure. */
+typedef struct
+{
+    /**
+     * Sends the notification request from HAL to GPSLocationProvider.
+     */
+    loc_gps_ni_notify_callback notify_cb;
+    loc_gps_create_thread create_thread_cb;
+} LocGpsNiCallbacks;
+
+/**
+ * Extended interface for Network-initiated (NI) support.
+ */
+typedef struct
+{
+    /** set to sizeof(LocGpsNiInterface) */
+    size_t          size;
+
+   /** Registers the callbacks for HAL to use. */
+   void (*init) (LocGpsNiCallbacks *callbacks);
+
+   /** Sends a response to HAL. */
+   void (*respond) (int notif_id, LocGpsUserResponseType user_response);
+} LocGpsNiInterface;
+
+#define LOC_AGPS_RIL_REQUEST_SETID_IMSI     (1<<0L)
+#define LOC_AGPS_RIL_REQUEST_SETID_MSISDN   (1<<1L)
+
+#define LOC_AGPS_RIL_REQUEST_REFLOC_CELLID  (1<<0L)
+#define LOC_AGPS_RIL_REQUEST_REFLOC_MAC     (1<<1L)
+
+typedef void (*loc_agps_ril_request_set_id)(uint32_t flags);
+typedef void (*loc_agps_ril_request_ref_loc)(uint32_t flags);
+
+typedef struct {
+    loc_agps_ril_request_set_id request_setid;
+    loc_agps_ril_request_ref_loc request_refloc;
+    loc_gps_create_thread create_thread_cb;
+} LocAGpsRilCallbacks;
+
+/** Extended interface for AGPS_RIL support. */
+typedef struct {
+    /** set to sizeof(LocAGpsRilInterface) */
+    size_t          size;
+    /**
+     * Opens the AGPS interface and provides the callback routines
+     * to the implementation of this interface.
+     */
+    void  (*init)( LocAGpsRilCallbacks* callbacks );
+
+    /**
+     * Sets the reference location.
+     */
+    void (*set_ref_location) (const LocAGpsRefLocation *agps_reflocation, size_t sz_struct);
+    /**
+     * Sets the set ID.
+     */
+    void (*set_set_id) (LocAGpsSetIDType type, const char* setid);
+
+    /**
+     * Send network initiated message.
+     */
+    void (*ni_message) (uint8_t *msg, size_t len);
+
+    /**
+     * Notify GPS of network status changes.
+     * These parameters match values in the android.net.NetworkInfo class.
+     */
+    void (*update_network_state) (int connected, int type, int roaming, const char* extra_info);
+
+    /**
+     * Notify GPS of network status changes.
+     * These parameters match values in the android.net.NetworkInfo class.
+     */
+    void (*update_network_availability) (int avaiable, const char* apn);
+} LocAGpsRilInterface;
+
+/**
+ * GPS Geofence.
+ *      There are 3 states associated with a Geofence: Inside, Outside, Unknown.
+ * There are 3 transitions: ENTERED, EXITED, UNCERTAIN.
+ *
+ * An example state diagram with confidence level: 95% and Unknown time limit
+ * set as 30 secs is shown below. (confidence level and Unknown time limit are
+ * explained latter)
+ *                         ____________________________
+ *                        |       Unknown (30 secs)   |
+ *                         """"""""""""""""""""""""""""
+ *                            ^ |                  |  ^
+ *                   UNCERTAIN| |ENTERED     EXITED|  |UNCERTAIN
+ *                            | v                  v  |
+ *                        ________    EXITED     _________
+ *                       | Inside | -----------> | Outside |
+ *                       |        | <----------- |         |
+ *                        """"""""    ENTERED    """""""""
+ *
+ * Inside state: We are 95% confident that the user is inside the geofence.
+ * Outside state: We are 95% confident that the user is outside the geofence
+ * Unknown state: Rest of the time.
+ *
+ * The Unknown state is better explained with an example:
+ *
+ *                            __________
+ *                           |         c|
+ *                           |  ___     |    _______
+ *                           |  |a|     |   |   b   |
+ *                           |  """     |    """""""
+ *                           |          |
+ *                            """"""""""
+ * In the diagram above, "a" and "b" are 2 geofences and "c" is the accuracy
+ * circle reported by the GPS subsystem. Now with regard to "b", the system is
+ * confident that the user is outside. But with regard to "a" is not confident
+ * whether it is inside or outside the geofence. If the accuracy remains the
+ * same for a sufficient period of time, the UNCERTAIN transition would be
+ * triggered with the state set to Unknown. If the accuracy improves later, an
+ * appropriate transition should be triggered.  This "sufficient period of time"
+ * is defined by the parameter in the add_geofence_area API.
+ *     In other words, Unknown state can be interpreted as a state in which the
+ * GPS subsystem isn't confident enough that the user is either inside or
+ * outside the Geofence. It moves to Unknown state only after the expiry of the
+ * timeout.
+ *
+ * The geofence callback needs to be triggered for the ENTERED and EXITED
+ * transitions, when the GPS system is confident that the user has entered
+ * (Inside state) or exited (Outside state) the Geofence. An implementation
+ * which uses a value of 95% as the confidence is recommended. The callback
+ * should be triggered only for the transitions requested by the
+ * add_geofence_area call.
+ *
+ * Even though the diagram and explanation talks about states and transitions,
+ * the callee is only interested in the transistions. The states are mentioned
+ * here for illustrative purposes.
+ *
+ * Startup Scenario: When the device boots up, if an application adds geofences,
+ * and then we get an accurate GPS location fix, it needs to trigger the
+ * appropriate (ENTERED or EXITED) transition for every Geofence it knows about.
+ * By default, all the Geofences will be in the Unknown state.
+ *
+ * When the GPS system is unavailable, loc_gps_geofence_status_callback should be
+ * called to inform the upper layers of the same. Similarly, when it becomes
+ * available the callback should be called. This is a global state while the
+ * UNKNOWN transition described above is per geofence.
+ *
+ * An important aspect to note is that users of this API (framework), will use
+ * other subsystems like wifi, sensors, cell to handle Unknown case and
+ * hopefully provide a definitive state transition to the third party
+ * application. GPS Geofence will just be a signal indicating what the GPS
+ * subsystem knows about the Geofence.
+ *
+ */
+#define LOC_GPS_GEOFENCE_ENTERED     (1<<0L)
+#define LOC_GPS_GEOFENCE_EXITED      (1<<1L)
+#define LOC_GPS_GEOFENCE_UNCERTAIN   (1<<2L)
+
+#define LOC_GPS_GEOFENCE_UNAVAILABLE (1<<0L)
+#define LOC_GPS_GEOFENCE_AVAILABLE   (1<<1L)
+
+#define LOC_GPS_GEOFENCE_OPERATION_SUCCESS           0
+#define LOC_GPS_GEOFENCE_ERROR_TOO_MANY_GEOFENCES -100
+#define LOC_GPS_GEOFENCE_ERROR_ID_EXISTS          -101
+#define LOC_GPS_GEOFENCE_ERROR_ID_UNKNOWN         -102
+#define LOC_GPS_GEOFENCE_ERROR_INVALID_TRANSITION -103
+#define LOC_GPS_GEOFENCE_ERROR_GENERIC            -149
+
+/**
+ * The callback associated with the geofence.
+ * Parameters:
+ *      geofence_id - The id associated with the add_geofence_area.
+ *      location    - The current GPS location.
+ *      transition  - Can be one of LOC_GPS_GEOFENCE_ENTERED, LOC_GPS_GEOFENCE_EXITED,
+ *                    LOC_GPS_GEOFENCE_UNCERTAIN.
+ *      timestamp   - Timestamp when the transition was detected.
+ *
+ * The callback should only be called when the caller is interested in that
+ * particular transition. For instance, if the caller is interested only in
+ * ENTERED transition, then the callback should NOT be called with the EXITED
+ * transition.
+ *
+ * IMPORTANT: If a transition is triggered resulting in this callback, the GPS
+ * subsystem will wake up the application processor, if its in suspend state.
+ */
+typedef void (*loc_gps_geofence_transition_callback) (int32_t geofence_id,  LocGpsLocation* location,
+        int32_t transition, LocGpsUtcTime timestamp);
+
+/**
+ * The callback associated with the availability of the GPS system for geofencing
+ * monitoring. If the GPS system determines that it cannot monitor geofences
+ * because of lack of reliability or unavailability of the GPS signals, it will
+ * call this callback with LOC_GPS_GEOFENCE_UNAVAILABLE parameter.
+ *
+ * Parameters:
+ *  status - LOC_GPS_GEOFENCE_UNAVAILABLE or LOC_GPS_GEOFENCE_AVAILABLE.
+ *  last_location - Last known location.
+ */
+typedef void (*loc_gps_geofence_status_callback) (int32_t status, LocGpsLocation* last_location);
+
+/**
+ * The callback associated with the add_geofence call.
+ *
+ * Parameter:
+ * geofence_id - Id of the geofence.
+ * status - LOC_GPS_GEOFENCE_OPERATION_SUCCESS
+ *          LOC_GPS_GEOFENCE_ERROR_TOO_MANY_GEOFENCES  - geofence limit has been reached.
+ *          LOC_GPS_GEOFENCE_ERROR_ID_EXISTS  - geofence with id already exists
+ *          LOC_GPS_GEOFENCE_ERROR_INVALID_TRANSITION - the monitorTransition contains an
+ *              invalid transition
+ *          LOC_GPS_GEOFENCE_ERROR_GENERIC - for other errors.
+ */
+typedef void (*loc_gps_geofence_add_callback) (int32_t geofence_id, int32_t status);
+
+/**
+ * The callback associated with the remove_geofence call.
+ *
+ * Parameter:
+ * geofence_id - Id of the geofence.
+ * status - LOC_GPS_GEOFENCE_OPERATION_SUCCESS
+ *          LOC_GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
+ *          LOC_GPS_GEOFENCE_ERROR_GENERIC for others.
+ */
+typedef void (*loc_gps_geofence_remove_callback) (int32_t geofence_id, int32_t status);
+
+
+/**
+ * The callback associated with the pause_geofence call.
+ *
+ * Parameter:
+ * geofence_id - Id of the geofence.
+ * status - LOC_GPS_GEOFENCE_OPERATION_SUCCESS
+ *          LOC_GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
+ *          LOC_GPS_GEOFENCE_ERROR_INVALID_TRANSITION -
+ *                    when monitor_transitions is invalid
+ *          LOC_GPS_GEOFENCE_ERROR_GENERIC for others.
+ */
+typedef void (*loc_gps_geofence_pause_callback) (int32_t geofence_id, int32_t status);
+
+/**
+ * The callback associated with the resume_geofence call.
+ *
+ * Parameter:
+ * geofence_id - Id of the geofence.
+ * status - LOC_GPS_GEOFENCE_OPERATION_SUCCESS
+ *          LOC_GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
+ *          LOC_GPS_GEOFENCE_ERROR_GENERIC for others.
+ */
+typedef void (*loc_gps_geofence_resume_callback) (int32_t geofence_id, int32_t status);
+
+typedef struct {
+    loc_gps_geofence_transition_callback geofence_transition_callback;
+    loc_gps_geofence_status_callback geofence_status_callback;
+    loc_gps_geofence_add_callback geofence_add_callback;
+    loc_gps_geofence_remove_callback geofence_remove_callback;
+    loc_gps_geofence_pause_callback geofence_pause_callback;
+    loc_gps_geofence_resume_callback geofence_resume_callback;
+    loc_gps_create_thread create_thread_cb;
+} LocGpsGeofenceCallbacks;
+
+/** Extended interface for GPS_Geofencing support */
+typedef struct {
+   /** set to sizeof(LocGpsGeofencingInterface) */
+   size_t          size;
+
+   /**
+    * Opens the geofence interface and provides the callback routines
+    * to the implementation of this interface.
+    */
+   void  (*init)( LocGpsGeofenceCallbacks* callbacks );
+
+   /**
+    * Add a geofence area. This api currently supports circular geofences.
+    * Parameters:
+    *    geofence_id - The id for the geofence. If a geofence with this id
+    *       already exists, an error value (LOC_GPS_GEOFENCE_ERROR_ID_EXISTS)
+    *       should be returned.
+    *    latitude, longtitude, radius_meters - The lat, long and radius
+    *       (in meters) for the geofence
+    *    last_transition - The current state of the geofence. For example, if
+    *       the system already knows that the user is inside the geofence,
+    *       this will be set to LOC_GPS_GEOFENCE_ENTERED. In most cases, it
+    *       will be LOC_GPS_GEOFENCE_UNCERTAIN.
+    *    monitor_transition - Which transitions to monitor. Bitwise OR of
+    *       LOC_GPS_GEOFENCE_ENTERED, LOC_GPS_GEOFENCE_EXITED and
+    *       LOC_GPS_GEOFENCE_UNCERTAIN.
+    *    notification_responsiveness_ms - Defines the best-effort description
+    *       of how soon should the callback be called when the transition
+    *       associated with the Geofence is triggered. For instance, if set
+    *       to 1000 millseconds with LOC_GPS_GEOFENCE_ENTERED, the callback
+    *       should be called 1000 milliseconds within entering the geofence.
+    *       This parameter is defined in milliseconds.
+    *       NOTE: This is not to be confused with the rate that the GPS is
+    *       polled at. It is acceptable to dynamically vary the rate of
+    *       sampling the GPS for power-saving reasons; thus the rate of
+    *       sampling may be faster or slower than this.
+    *    unknown_timer_ms - The time limit after which the UNCERTAIN transition
+    *       should be triggered. This parameter is defined in milliseconds.
+    *       See above for a detailed explanation.
+    */
+   void (*add_geofence_area) (int32_t geofence_id, double latitude, double longitude,
+       double radius_meters, int last_transition, int monitor_transitions,
+       int notification_responsiveness_ms, int unknown_timer_ms);
+
+   /**
+    * Pause monitoring a particular geofence.
+    * Parameters:
+    *   geofence_id - The id for the geofence.
+    */
+   void (*pause_geofence) (int32_t geofence_id);
+
+   /**
+    * Resume monitoring a particular geofence.
+    * Parameters:
+    *   geofence_id - The id for the geofence.
+    *   monitor_transitions - Which transitions to monitor. Bitwise OR of
+    *       LOC_GPS_GEOFENCE_ENTERED, LOC_GPS_GEOFENCE_EXITED and
+    *       LOC_GPS_GEOFENCE_UNCERTAIN.
+    *       This supersedes the value associated provided in the
+    *       add_geofence_area call.
+    */
+   void (*resume_geofence) (int32_t geofence_id, int monitor_transitions);
+
+   /**
+    * Remove a geofence area. After the function returns, no notifications
+    * should be sent.
+    * Parameter:
+    *   geofence_id - The id for the geofence.
+    */
+   void (*remove_geofence_area) (int32_t geofence_id);
+} LocGpsGeofencingInterface;
+
+/**
+ * Legacy struct to represent an estimate of the GPS clock time.
+ * Deprecated, to be removed in the next Android release.
+ * Use LocGnssClock instead.
+ */
+typedef struct {
+    /** set to sizeof(LocGpsClock) */
+    size_t size;
+    LocGpsClockFlags flags;
+    int16_t leap_second;
+    LocGpsClockType type;
+    int64_t time_ns;
+    double time_uncertainty_ns;
+    int64_t full_bias_ns;
+    double bias_ns;
+    double bias_uncertainty_ns;
+    double drift_nsps;
+    double drift_uncertainty_nsps;
+} LocGpsClock;
+
+/**
+ * Represents an estimate of the GPS clock time.
+ */
+typedef struct {
+    /** set to sizeof(LocGnssClock) */
+    size_t size;
+
+    /**
+     * A set of flags indicating the validity of the fields in this data
+     * structure.
+     */
+    LocGnssClockFlags flags;
+
+    /**
+     * Leap second data.
+     * The sign of the value is defined by the following equation:
+     *      utc_time_ns = time_ns - (full_bias_ns + bias_ns) - leap_second *
+     *      1,000,000,000
+     *
+     * If the data is available 'flags' must contain LOC_GNSS_CLOCK_HAS_LEAP_SECOND.
+     */
+    int16_t leap_second;
+
+    /**
+     * The GNSS receiver internal clock value. This is the local hardware clock
+     * value.
+     *
+     * For local hardware clock, this value is expected to be monotonically
+     * increasing while the hardware clock remains power on. (For the case of a
+     * HW clock that is not continuously on, see the
+     * hw_clock_discontinuity_count field). The receiver's estimate of GPS time
+     * can be derived by substracting the sum of full_bias_ns and bias_ns (when
+     * available) from this value.
+     *
+     * This GPS time is expected to be the best estimate of current GPS time
+     * that GNSS receiver can achieve.
+     *
+     * Sub-nanosecond accuracy can be provided by means of the 'bias_ns' field.
+     * The value contains the 'time uncertainty' in it.
+     *
+     * This field is mandatory.
+     */
+    int64_t time_ns;
+
+    /**
+     * 1-Sigma uncertainty associated with the clock's time in nanoseconds.
+     * The uncertainty is represented as an absolute (single sided) value.
+     *
+     * If the data is available, 'flags' must contain
+     * LOC_GNSS_CLOCK_HAS_TIME_UNCERTAINTY. This value is effectively zero (it is
+     * the reference local clock, by which all other times and time
+     * uncertainties are measured.)  (And thus this field can be not provided,
+     * per LOC_GNSS_CLOCK_HAS_TIME_UNCERTAINTY flag, or provided & set to 0.)
+     */
+    double time_uncertainty_ns;
+
+    /**
+     * The difference between hardware clock ('time' field) inside GPS receiver
+     * and the true GPS time since 0000Z, January 6, 1980, in nanoseconds.
+     *
+     * The sign of the value is defined by the following equation:
+     *      local estimate of GPS time = time_ns - (full_bias_ns + bias_ns)
+     *
+     * This value is mandatory if the receiver has estimated GPS time. If the
+     * computed time is for a non-GPS constellation, the time offset of that
+     * constellation to GPS has to be applied to fill this value. The error
+     * estimate for the sum of this and the bias_ns is the bias_uncertainty_ns,
+     * and the caller is responsible for using this uncertainty (it can be very
+     * large before the GPS time has been solved for.) If the data is available
+     * 'flags' must contain LOC_GNSS_CLOCK_HAS_FULL_BIAS.
+     */
+    int64_t full_bias_ns;
+
+    /**
+     * Sub-nanosecond bias.
+     * The error estimate for the sum of this and the full_bias_ns is the
+     * bias_uncertainty_ns
+     *
+     * If the data is available 'flags' must contain LOC_GNSS_CLOCK_HAS_BIAS. If GPS
+     * has computed a position fix. This value is mandatory if the receiver has
+     * estimated GPS time.
+     */
+    double bias_ns;
+
+    /**
+     * 1-Sigma uncertainty associated with the local estimate of GPS time (clock
+     * bias) in nanoseconds. The uncertainty is represented as an absolute
+     * (single sided) value.
+     *
+     * If the data is available 'flags' must contain
+     * LOC_GNSS_CLOCK_HAS_BIAS_UNCERTAINTY. This value is mandatory if the receiver
+     * has estimated GPS time.
+     */
+    double bias_uncertainty_ns;
+
+    /**
+     * The clock's drift in nanoseconds (per second).
+     *
+     * A positive value means that the frequency is higher than the nominal
+     * frequency, and that the (full_bias_ns + bias_ns) is growing more positive
+     * over time.
+     *
+     * The value contains the 'drift uncertainty' in it.
+     * If the data is available 'flags' must contain LOC_GNSS_CLOCK_HAS_DRIFT.
+     *
+     * This value is mandatory if the receiver has estimated GNSS time
+     */
+    double drift_nsps;
+
+    /**
+     * 1-Sigma uncertainty associated with the clock's drift in nanoseconds (per second).
+     * The uncertainty is represented as an absolute (single sided) value.
+     *
+     * If the data is available 'flags' must contain
+     * LOC_GNSS_CLOCK_HAS_DRIFT_UNCERTAINTY. If GPS has computed a position fix this
+     * field is mandatory and must be populated.
+     */
+    double drift_uncertainty_nsps;
+
+    /**
+     * When there are any discontinuities in the HW clock, this field is
+     * mandatory.
+     *
+     * A "discontinuity" is meant to cover the case of a switch from one source
+     * of clock to another.  A single free-running crystal oscillator (XO)
+     * should generally not have any discontinuities, and this can be set and
+     * left at 0.
+     *
+     * If, however, the time_ns value (HW clock) is derived from a composite of
+     * sources, that is not as smooth as a typical XO, or is otherwise stopped &
+     * restarted, then this value shall be incremented each time a discontinuity
+     * occurs.  (E.g. this value may start at zero at device boot-up and
+     * increment each time there is a change in clock continuity. In the
+     * unlikely event that this value reaches full scale, rollover (not
+     * clamping) is required, such that this value continues to change, during
+     * subsequent discontinuity events.)
+     *
+     * While this number stays the same, between LocGnssClock reports, it can be
+     * safely assumed that the time_ns value has been running continuously, e.g.
+     * derived from a single, high quality clock (XO like, or better, that's
+     * typically used during continuous GNSS signal sampling.)
+     *
+     * It is expected, esp. during periods where there are few GNSS signals
+     * available, that the HW clock be discontinuity-free as long as possible,
+     * as this avoids the need to use (waste) a GNSS measurement to fully
+     * re-solve for the GPS clock bias and drift, when using the accompanying
+     * measurements, from consecutive LocGnssData reports.
+     */
+    uint32_t hw_clock_discontinuity_count;
+
+} LocGnssClock;
+
+/**
+ * Legacy struct to represent a GPS Measurement, it contains raw and computed
+ * information.
+ * Deprecated, to be removed in the next Android release.
+ * Use LocGnssMeasurement instead.
+ */
+typedef struct {
+    /** set to sizeof(LocGpsMeasurement) */
+    size_t size;
+    LocGpsMeasurementFlags flags;
+    int8_t prn;
+    double time_offset_ns;
+    LocGpsMeasurementState state;
+    int64_t received_gps_tow_ns;
+    int64_t received_gps_tow_uncertainty_ns;
+    double c_n0_dbhz;
+    double pseudorange_rate_mps;
+    double pseudorange_rate_uncertainty_mps;
+    LocGpsAccumulatedDeltaRangeState accumulated_delta_range_state;
+    double accumulated_delta_range_m;
+    double accumulated_delta_range_uncertainty_m;
+    double pseudorange_m;
+    double pseudorange_uncertainty_m;
+    double code_phase_chips;
+    double code_phase_uncertainty_chips;
+    float carrier_frequency_hz;
+    int64_t carrier_cycles;
+    double carrier_phase;
+    double carrier_phase_uncertainty;
+    LocGpsLossOfLock loss_of_lock;
+    int32_t bit_number;
+    int16_t time_from_last_bit_ms;
+    double doppler_shift_hz;
+    double doppler_shift_uncertainty_hz;
+    LocGpsMultipathIndicator multipath_indicator;
+    double snr_db;
+    double elevation_deg;
+    double elevation_uncertainty_deg;
+    double azimuth_deg;
+    double azimuth_uncertainty_deg;
+    bool used_in_fix;
+} LocGpsMeasurement;
+
+/**
+ * Represents a GNSS Measurement, it contains raw and computed information.
+ *
+ * Independence - All signal measurement information (e.g. sv_time,
+ * pseudorange_rate, multipath_indicator) reported in this struct should be
+ * based on GNSS signal measurements only. You may not synthesize measurements
+ * by calculating or reporting expected measurements based on known or estimated
+ * position, velocity, or time.
+ */
+typedef struct {
+    /** set to sizeof(LocGnssMeasurement) */
+    size_t size;
+
+    /** A set of flags indicating the validity of the fields in this data structure. */
+    LocGnssMeasurementFlags flags;
+
+    /**
+     * Satellite vehicle ID number, as defined in LocGnssSvInfo::svid
+     * This is a mandatory value.
+     */
+    int16_t svid;
+
+    /**
+     * Defines the constellation of the given SV. Value should be one of those
+     * LOC_GNSS_CONSTELLATION_* constants
+     */
+    LocGnssConstellationType constellation;
+
+    /**
+     * Time offset at which the measurement was taken in nanoseconds.
+     * The reference receiver's time is specified by LocGpsData::clock::time_ns and should be
+     * interpreted in the same way as indicated by LocGpsClock::type.
+     *
+     * The sign of time_offset_ns is given by the following equation:
+     *      measurement time = LocGpsClock::time_ns + time_offset_ns
+     *
+     * It provides an individual time-stamp for the measurement, and allows sub-nanosecond accuracy.
+     * This is a mandatory value.
+     */
+    double time_offset_ns;
+
+    /**
+     * Per satellite sync state. It represents the current sync state for the associated satellite.
+     * Based on the sync state, the 'received GPS tow' field should be interpreted accordingly.
+     *
+     * This is a mandatory value.
+     */
+    LocGnssMeasurementState state;
+
+    /**
+     * The received GNSS Time-of-Week at the measurement time, in nanoseconds.
+     * Ensure that this field is independent (see comment at top of
+     * LocGnssMeasurement struct.)
+     *
+     * For GPS & QZSS, this is:
+     *   Received GPS Time-of-Week at the measurement time, in nanoseconds.
+     *   The value is relative to the beginning of the current GPS week.
+     *
+     *   Given the highest sync state that can be achieved, per each satellite, valid range
+     *   for this field can be:
+     *     Searching       : [ 0       ]   : LOC_GNSS_MEASUREMENT_STATE_UNKNOWN
+     *     C/A code lock   : [ 0   1ms ]   : LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK is set
+     *     Bit sync        : [ 0  20ms ]   : LOC_GNSS_MEASUREMENT_STATE_BIT_SYNC is set
+     *     Subframe sync   : [ 0    6s ]   : LOC_GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC is set
+     *     TOW decoded     : [ 0 1week ]   : LOC_GNSS_MEASUREMENT_STATE_TOW_DECODED is set
+     *
+     *   Note well: if there is any ambiguity in integer millisecond,
+     *   LOC_GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS should be set accordingly, in the 'state' field.
+     *
+     *   This value must be populated if 'state' != LOC_GNSS_MEASUREMENT_STATE_UNKNOWN.
+     *
+     * For Glonass, this is:
+     *   Received Glonass time of day, at the measurement time in nanoseconds.
+     *
+     *   Given the highest sync state that can be achieved, per each satellite, valid range for
+     *   this field can be:
+     *     Searching       : [ 0       ]   : LOC_GNSS_MEASUREMENT_STATE_UNKNOWN
+     *     C/A code lock   : [ 0   1ms ]   : LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK is set
+     *     Symbol sync     : [ 0  10ms ]   : LOC_GNSS_MEASUREMENT_STATE_SYMBOL_SYNC is set
+     *     Bit sync        : [ 0  20ms ]   : LOC_GNSS_MEASUREMENT_STATE_BIT_SYNC is set
+     *     String sync     : [ 0    2s ]   : LOC_GNSS_MEASUREMENT_STATE_GLO_STRING_SYNC is set
+     *     Time of day     : [ 0  1day ]   : LOC_GNSS_MEASUREMENT_STATE_GLO_TOD_DECODED is set
+     *
+     * For Beidou, this is:
+     *   Received Beidou time of week, at the measurement time in nanoseconds.
+     *
+     *   Given the highest sync state that can be achieved, per each satellite, valid range for
+     *   this field can be:
+     *     Searching    : [ 0       ] : LOC_GNSS_MEASUREMENT_STATE_UNKNOWN
+     *     C/A code lock: [ 0   1ms ] : LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK is set
+     *     Bit sync (D2): [ 0   2ms ] : LOC_GNSS_MEASUREMENT_STATE_BDS_D2_BIT_SYNC is set
+     *     Bit sync (D1): [ 0  20ms ] : LOC_GNSS_MEASUREMENT_STATE_BIT_SYNC is set
+     *     Subframe (D2): [ 0  0.6s ] : LOC_GNSS_MEASUREMENT_STATE_BDS_D2_SUBFRAME_SYNC is set
+     *     Subframe (D1): [ 0    6s ] : LOC_GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC is set
+     *     Time of week : [ 0 1week ] : LOC_GNSS_MEASUREMENT_STATE_TOW_DECODED is set
+     *
+     * For Galileo, this is:
+     *   Received Galileo time of week, at the measurement time in nanoseconds.
+     *
+     *     E1BC code lock   : [ 0   4ms ]   : LOC_GNSS_MEASUREMENT_STATE_GAL_E1BC_CODE_LOCK is set
+     *     E1C 2nd code lock: [ 0 100ms ]   :
+     *     LOC_GNSS_MEASUREMENT_STATE_GAL_E1C_2ND_CODE_LOCK is set
+     *
+     *     E1B page    : [ 0    2s ] : LOC_GNSS_MEASUREMENT_STATE_GAL_E1B_PAGE_SYNC is set
+     *     Time of week: [ 0 1week ] : LOC_GNSS_MEASUREMENT_STATE_TOW_DECODED is set
+     *
+     * For SBAS, this is:
+     *   Received SBAS time, at the measurement time in nanoseconds.
+     *
+     *   Given the highest sync state that can be achieved, per each satellite,
+     *   valid range for this field can be:
+     *     Searching    : [ 0     ] : LOC_GNSS_MEASUREMENT_STATE_UNKNOWN
+     *     C/A code lock: [ 0 1ms ] : LOC_GNSS_MEASUREMENT_STATE_CODE_LOCK is set
+     *     Symbol sync  : [ 0 2ms ] : LOC_GNSS_MEASUREMENT_STATE_SYMBOL_SYNC is set
+     *     Message      : [ 0  1s ] : LOC_GNSS_MEASUREMENT_STATE_SBAS_SYNC is set
+    */
+    int64_t received_sv_time_in_ns;
+
+    /**
+     * 1-Sigma uncertainty of the Received GPS Time-of-Week in nanoseconds.
+     *
+     * This value must be populated if 'state' != LOC_GPS_MEASUREMENT_STATE_UNKNOWN.
+     */
+    int64_t received_sv_time_uncertainty_in_ns;
+
+    /**
+     * Carrier-to-noise density in dB-Hz, typically in the range [0, 63].
+     * It contains the measured C/N0 value for the signal at the antenna port.
+     *
+     * This is a mandatory value.
+     */
+    double c_n0_dbhz;
+
+    /**
+     * Pseudorange rate at the timestamp in m/s. The correction of a given
+     * Pseudorange Rate value includes corrections for receiver and satellite
+     * clock frequency errors. Ensure that this field is independent (see
+     * comment at top of LocGnssMeasurement struct.)
+     *
+     * It is mandatory to provide the 'uncorrected' 'pseudorange rate', and provide LocGpsClock's
+     * 'drift' field as well (When providing the uncorrected pseudorange rate, do not apply the
+     * corrections described above.)
+     *
+     * The value includes the 'pseudorange rate uncertainty' in it.
+     * A positive 'uncorrected' value indicates that the SV is moving away from the receiver.
+     *
+     * The sign of the 'uncorrected' 'pseudorange rate' and its relation to the sign of 'doppler
+     * shift' is given by the equation:
+     *      pseudorange rate = -k * doppler shift   (where k is a constant)
+     *
+     * This should be the most accurate pseudorange rate available, based on
+     * fresh signal measurements from this channel.
+     *
+     * It is mandatory that this value be provided at typical carrier phase PRR
+     * quality (few cm/sec per second of uncertainty, or better) - when signals
+     * are sufficiently strong & stable, e.g. signals from a GPS simulator at >=
+     * 35 dB-Hz.
+     */
+    double pseudorange_rate_mps;
+
+    /**
+     * 1-Sigma uncertainty of the pseudorange_rate_mps.
+     * The uncertainty is represented as an absolute (single sided) value.
+     *
+     * This is a mandatory value.
+     */
+    double pseudorange_rate_uncertainty_mps;
+
+    /**
+     * Accumulated delta range's state. It indicates whether ADR is reset or there is a cycle slip
+     * (indicating loss of lock).
+     *
+     * This is a mandatory value.
+     */
+    LocGnssAccumulatedDeltaRangeState accumulated_delta_range_state;
+
+    /**
+     * Accumulated delta range since the last channel reset in meters.
+     * A positive value indicates that the SV is moving away from the receiver.
+     *
+     * The sign of the 'accumulated delta range' and its relation to the sign of 'carrier phase'
+     * is given by the equation:
+     *          accumulated delta range = -k * carrier phase    (where k is a constant)
+     *
+     * This value must be populated if 'accumulated delta range state' != LOC_GPS_ADR_STATE_UNKNOWN.
+     * However, it is expected that the data is only accurate when:
+     *      'accumulated delta range state' == LOC_GPS_ADR_STATE_VALID.
+     */
+    double accumulated_delta_range_m;
+
+    /**
+     * 1-Sigma uncertainty of the accumulated delta range in meters.
+     * This value must be populated if 'accumulated delta range state' != LOC_GPS_ADR_STATE_UNKNOWN.
+     */
+    double accumulated_delta_range_uncertainty_m;
+
+    /**
+     * Carrier frequency at which codes and messages are modulated, it can be L1 or L2.
+     * If the field is not set, the carrier frequency is assumed to be L1.
+     *
+     * If the data is available, 'flags' must contain
+     * LOC_GNSS_MEASUREMENT_HAS_CARRIER_FREQUENCY.
+     */
+    float carrier_frequency_hz;
+
+    /**
+     * The number of full carrier cycles between the satellite and the receiver.
+     * The reference frequency is given by the field 'carrier_frequency_hz'.
+     * Indications of possible cycle slips and resets in the accumulation of
+     * this value can be inferred from the accumulated_delta_range_state flags.
+     *
+     * If the data is available, 'flags' must contain
+     * LOC_GNSS_MEASUREMENT_HAS_CARRIER_CYCLES.
+     */
+    int64_t carrier_cycles;
+
+    /**
+     * The RF phase detected by the receiver, in the range [0.0, 1.0].
+     * This is usually the fractional part of the complete carrier phase measurement.
+     *
+     * The reference frequency is given by the field 'carrier_frequency_hz'.
+     * The value contains the 'carrier-phase uncertainty' in it.
+     *
+     * If the data is available, 'flags' must contain
+     * LOC_GNSS_MEASUREMENT_HAS_CARRIER_PHASE.
+     */
+    double carrier_phase;
+
+    /**
+     * 1-Sigma uncertainty of the carrier-phase.
+     * If the data is available, 'flags' must contain
+     * LOC_GNSS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY.
+     */
+    double carrier_phase_uncertainty;
+
+    /**
+     * An enumeration that indicates the 'multipath' state of the event.
+     *
+     * The multipath Indicator is intended to report the presence of overlapping
+     * signals that manifest as distorted correlation peaks.
+     *
+     * - if there is a distorted correlation peak shape, report that multipath
+     *   is LOC_GNSS_MULTIPATH_INDICATOR_PRESENT.
+     * - if there is not a distorted correlation peak shape, report
+     *   LOC_GNSS_MULTIPATH_INDICATOR_NOT_PRESENT
+     * - if signals are too weak to discern this information, report
+     *   LOC_GNSS_MULTIPATH_INDICATOR_UNKNOWN
+     *
+     * Example: when doing the standardized overlapping Multipath Performance
+     * test (3GPP TS 34.171) the Multipath indicator should report
+     * LOC_GNSS_MULTIPATH_INDICATOR_PRESENT for those signals that are tracked, and
+     * contain multipath, and LOC_GNSS_MULTIPATH_INDICATOR_NOT_PRESENT for those
+     * signals that are tracked and do not contain multipath.
+     */
+    LocGnssMultipathIndicator multipath_indicator;
+
+    /**
+     * Signal-to-noise ratio at correlator output in dB.
+     * If the data is available, 'flags' must contain LOC_GNSS_MEASUREMENT_HAS_SNR.
+     * This is the power ratio of the "correlation peak height above the
+     * observed noise floor" to "the noise RMS".
+     */
+    double snr_db;
+} LocGnssMeasurement;
+
+/**
+ * Legacy struct to represents a reading of GPS measurements.
+ * Deprecated, to be removed in the next Android release.
+ * Use LocGnssData instead.
+ */
+typedef struct {
+    /** set to sizeof(LocGpsData) */
+    size_t size;
+    size_t measurement_count;
+    LocGpsMeasurement measurements[LOC_GPS_MAX_MEASUREMENT];
+
+    /** The GPS clock time reading. */
+    LocGpsClock clock;
+} LocGpsData;
+
+/**
+ * Represents a reading of GNSS measurements. For devices where LocGnssSystemInfo's
+ * year_of_hw is set to 2016+, it is mandatory that these be provided, on
+ * request, when the GNSS receiver is searching/tracking signals.
+ *
+ * - Reporting of GPS constellation measurements is mandatory.
+ * - Reporting of all tracked constellations are encouraged.
+ */
+typedef struct {
+    /** set to sizeof(LocGnssData) */
+    size_t size;
+
+    /** Number of measurements. */
+    size_t measurement_count;
+
+    /** The array of measurements. */
+    LocGnssMeasurement measurements[LOC_GNSS_MAX_MEASUREMENT];
+
+    /** The GPS clock time reading. */
+    LocGnssClock clock;
+} LocGnssData;
+
+/**
+ * The legacy callback for to report measurements from the HAL.
+ *
+ * This callback is deprecated, and will be removed in the next release. Use
+ * loc_gnss_measurement_callback() instead.
+ *
+ * Parameters:
+ *    data - A data structure containing the measurements.
+ */
+typedef void (*loc_gps_measurement_callback) (LocGpsData* data);
+
+/**
+ * The callback for to report measurements from the HAL.
+ *
+ * Parameters:
+ *    data - A data structure containing the measurements.
+ */
+typedef void (*loc_gnss_measurement_callback) (LocGnssData* data);
+
+typedef struct {
+    /** set to sizeof(LocGpsMeasurementCallbacks) */
+    size_t size;
+    loc_gps_measurement_callback measurement_callback;
+    loc_gnss_measurement_callback loc_gnss_measurement_callback;
+} LocGpsMeasurementCallbacks;
+
+#define LOC_GPS_MEASUREMENT_OPERATION_SUCCESS          0
+#define LOC_GPS_MEASUREMENT_ERROR_ALREADY_INIT      -100
+#define LOC_GPS_MEASUREMENT_ERROR_GENERIC           -101
+
+/**
+ * Extended interface for GPS Measurements support.
+ */
+typedef struct {
+    /** Set to sizeof(LocGpsMeasurementInterface) */
+    size_t size;
+
+    /**
+     * Initializes the interface and registers the callback routines with the HAL.
+     * After a successful call to 'init' the HAL must begin to provide updates at its own phase.
+     *
+     * Status:
+     *    LOC_GPS_MEASUREMENT_OPERATION_SUCCESS
+     *    LOC_GPS_MEASUREMENT_ERROR_ALREADY_INIT - if a callback has already been registered without a
+     *              corresponding call to 'close'
+     *    LOC_GPS_MEASUREMENT_ERROR_GENERIC - if any other error occurred, it is expected that the HAL
+     *              will not generate any updates upon returning this error code.
+     */
+    int (*init) (LocGpsMeasurementCallbacks* callbacks);
+
+    /**
+     * Stops updates from the HAL, and unregisters the callback routines.
+     * After a call to stop, the previously registered callbacks must be considered invalid by the
+     * HAL.
+     * If stop is invoked without a previous 'init', this function should perform no work.
+     */
+    void (*close) ();
+
+} LocGpsMeasurementInterface;
+
+#if 0
+/**
+ * Legacy struct to represents a GPS navigation message (or a fragment of it).
+ * Deprecated, to be removed in the next Android release.
+ * Use GnssNavigationMessage instead.
+ */
+typedef struct {
+    /** set to sizeof(GpsNavigationMessage) */
+    size_t size;
+    int8_t prn;
+    GpsNavigationMessageType type;
+    NavigationMessageStatus status;
+    int16_t message_id;
+    int16_t submessage_id;
+    size_t data_length;
+    uint8_t* data;
+} GpsNavigationMessage;
+
+/** Represents a GPS navigation message (or a fragment of it). */
+typedef struct {
+    /** set to sizeof(GnssNavigationMessage) */
+    size_t size;
+
+    /**
+     * Satellite vehicle ID number, as defined in LocGnssSvInfo::svid
+     * This is a mandatory value.
+     */
+    int16_t svid;
+
+    /**
+     * The type of message contained in the structure.
+     * This is a mandatory value.
+     */
+    GnssNavigationMessageType type;
+
+    /**
+     * The status of the received navigation message.
+     * No need to send any navigation message that contains words with parity error and cannot be
+     * corrected.
+     */
+    NavigationMessageStatus status;
+
+    /**
+     * Message identifier. It provides an index so the complete Navigation
+     * Message can be assembled.
+     *
+     * - For GPS L1 C/A subframe 4 and 5, this value corresponds to the 'frame
+     *   id' of the navigation message, in the range of 1-25 (Subframe 1, 2, 3
+     *   does not contain a 'frame id' and this value can be set to -1.)
+     *
+     * - For Glonass L1 C/A, this refers to the frame ID, in the range of 1-5.
+     *
+     * - For BeiDou D1, this refers to the frame number in the range of 1-24
+     *
+     * - For Beidou D2, this refers to the frame number, in the range of 1-120
+     *
+     * - For Galileo F/NAV nominal frame structure, this refers to the subframe
+     *   number, in the range of 1-12
+     *
+     * - For Galileo I/NAV nominal frame structure, this refers to the subframe
+     *   number in the range of 1-24
+     */
+    int16_t message_id;
+
+    /**
+     * Sub-message identifier. If required by the message 'type', this value
+     * contains a sub-index within the current message (or frame) that is being
+     * transmitted.
+     *
+     * - For GPS L1 C/A, BeiDou D1 & BeiDou D2, the submessage id corresponds to
+     *   the subframe number of the navigation message, in the range of 1-5.
+     *
+     * - For Glonass L1 C/A, this refers to the String number, in the range from
+     *   1-15
+     *
+     * - For Galileo F/NAV, this refers to the page type in the range 1-6
+     *
+     * - For Galileo I/NAV, this refers to the word type in the range 1-10+
+     */
+    int16_t submessage_id;
+
+    /**
+     * The length of the data (in bytes) contained in the current message.
+     * If this value is different from zero, 'data' must point to an array of the same size.
+     * e.g. for L1 C/A the size of the sub-frame will be 40 bytes (10 words, 30 bits/word).
+     *
+     * This is a mandatory value.
+     */
+    size_t data_length;
+
+    /**
+     * The data of the reported GPS message. The bytes (or words) specified
+     * using big endian format (MSB first).
+     *
+     * - For GPS L1 C/A, Beidou D1 & Beidou D2, each subframe contains 10 30-bit
+     *   words. Each word (30 bits) should be fit into the last 30 bits in a
+     *   4-byte word (skip B31 and B32), with MSB first, for a total of 40
+     *   bytes, covering a time period of 6, 6, and 0.6 seconds, respectively.
+     *
+     * - For Glonass L1 C/A, each string contains 85 data bits, including the
+     *   checksum.  These bits should be fit into 11 bytes, with MSB first (skip
+     *   B86-B88), covering a time period of 2 seconds.
+     *
+     * - For Galileo F/NAV, each word consists of 238-bit (sync & tail symbols
+     *   excluded). Each word should be fit into 30-bytes, with MSB first (skip
+     *   B239, B240), covering a time period of 10 seconds.
+     *
+     * - For Galileo I/NAV, each page contains 2 page parts, even and odd, with
+     *   a total of 2x114 = 228 bits, (sync & tail excluded) that should be fit
+     *   into 29 bytes, with MSB first (skip B229-B232).
+     */
+    uint8_t* data;
+
+} GnssNavigationMessage;
+
+/**
+ * The legacy callback to report an available fragment of a GPS navigation
+ * messages from the HAL.
+ *
+ * This callback is deprecated, and will be removed in the next release. Use
+ * gnss_navigation_message_callback() instead.
+ *
+ * Parameters:
+ *      message - The GPS navigation submessage/subframe representation.
+ */
+typedef void (*gps_navigation_message_callback) (GpsNavigationMessage* message);
+
+/**
+ * The callback to report an available fragment of a GPS navigation messages from the HAL.
+ *
+ * Parameters:
+ *      message - The GPS navigation submessage/subframe representation.
+ */
+typedef void (*gnss_navigation_message_callback) (GnssNavigationMessage* message);
+
+typedef struct {
+    /** set to sizeof(GpsNavigationMessageCallbacks) */
+    size_t size;
+    gps_navigation_message_callback navigation_message_callback;
+    gnss_navigation_message_callback gnss_navigation_message_callback;
+} GpsNavigationMessageCallbacks;
+
+#define GPS_NAVIGATION_MESSAGE_OPERATION_SUCCESS             0
+#define GPS_NAVIGATION_MESSAGE_ERROR_ALREADY_INIT         -100
+#define GPS_NAVIGATION_MESSAGE_ERROR_GENERIC              -101
+
+/**
+ * Extended interface for GPS navigation message reporting support.
+ */
+typedef struct {
+    /** Set to sizeof(GpsNavigationMessageInterface) */
+    size_t size;
+
+    /**
+     * Initializes the interface and registers the callback routines with the HAL.
+     * After a successful call to 'init' the HAL must begin to provide updates as they become
+     * available.
+     *
+     * Status:
+     *      GPS_NAVIGATION_MESSAGE_OPERATION_SUCCESS
+     *      GPS_NAVIGATION_MESSAGE_ERROR_ALREADY_INIT - if a callback has already been registered
+     *              without a corresponding call to 'close'.
+     *      GPS_NAVIGATION_MESSAGE_ERROR_GENERIC - if any other error occurred, it is expected that
+     *              the HAL will not generate any updates upon returning this error code.
+     */
+    int (*init) (GpsNavigationMessageCallbacks* callbacks);
+
+    /**
+     * Stops updates from the HAL, and unregisters the callback routines.
+     * After a call to stop, the previously registered callbacks must be considered invalid by the
+     * HAL.
+     * If stop is invoked without a previous 'init', this function should perform no work.
+     */
+    void (*close) ();
+
+} GpsNavigationMessageInterface;
+#endif
+
+/**
+ * Interface for passing GNSS configuration contents from platform to HAL.
+ */
+typedef struct {
+    /** Set to sizeof(LocGnssConfigurationInterface) */
+    size_t size;
+
+    /**
+     * Deliver GNSS configuration contents to HAL.
+     * Parameters:
+     *     config_data - a pointer to a char array which holds what usually is expected from
+                         file(/vendor/etc/gps.conf), i.e., a sequence of UTF8 strings separated by '\n'.
+     *     length - total number of UTF8 characters in configuraiton data.
+     *
+     * IMPORTANT:
+     *      GPS HAL should expect this function can be called multiple times. And it may be
+     *      called even when GpsLocationProvider is already constructed and enabled. GPS HAL
+     *      should maintain the existing requests for various callback regardless the change
+     *      in configuration data.
+     */
+    void (*configuration_update) (const char* config_data, int32_t length);
+} LocGnssConfigurationInterface;
+
+__END_DECLS
+
+#endif /* LOC_GPS_H */
+
diff --git a/sdm845/utils/loc_log.cpp b/sdm845/utils/loc_log.cpp
new file mode 100644
index 0000000..23b2894
--- /dev/null
+++ b/sdm845/utils/loc_log.cpp
@@ -0,0 +1,238 @@
+/* Copyright (c) 2011-2012, 2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include "loc_log.h"
+#include "msg_q.h"
+#include <platform_lib_includes.h>
+
+#define  BUFFER_SIZE  120
+
+// Logging Improvements
+const char *loc_logger_boolStr[]={"False","True"};
+const char VOID_RET[]   = "None";
+const char FROM_AFW[]   = "===>";
+const char TO_MODEM[]   = "--->";
+const char FROM_MODEM[] = "<---";
+const char TO_AFW[]     = "<===";
+const char EXIT_TAG[]   = "Exiting";
+const char ENTRY_TAG[]  = "Entering";
+const char EXIT_ERROR_TAG[]  = "Exiting with error";
+
+/* Logging Mechanism */
+loc_logger_s_type loc_logger;
+
+/* Get names from value */
+const char* loc_get_name_from_mask(const loc_name_val_s_type table[], size_t table_size, long mask)
+{
+   size_t i;
+   for (i = 0; i < table_size; i++)
+   {
+      if (table[i].val & (long) mask)
+      {
+         return table[i].name;
+      }
+   }
+   return UNKNOWN_STR;
+}
+
+/* Get names from value */
+const char* loc_get_name_from_val(const loc_name_val_s_type table[], size_t table_size, long value)
+{
+   size_t i;
+   for (i = 0; i < table_size; i++)
+   {
+      if (table[i].val == (long) value)
+      {
+         return table[i].name;
+      }
+   }
+   return UNKNOWN_STR;
+}
+
+static const loc_name_val_s_type loc_msg_q_status[] =
+{
+    NAME_VAL( eMSG_Q_SUCCESS ),
+    NAME_VAL( eMSG_Q_FAILURE_GENERAL ),
+    NAME_VAL( eMSG_Q_INVALID_PARAMETER ),
+    NAME_VAL( eMSG_Q_INVALID_HANDLE ),
+    NAME_VAL( eMSG_Q_UNAVAILABLE_RESOURCE ),
+    NAME_VAL( eMSG_Q_INSUFFICIENT_BUFFER )
+};
+static const size_t loc_msg_q_status_num = LOC_TABLE_SIZE(loc_msg_q_status);
+
+/* Find msg_q status name */
+const char* loc_get_msg_q_status(int status)
+{
+   return loc_get_name_from_val(loc_msg_q_status, loc_msg_q_status_num, (long) status);
+}
+
+const char* log_succ_fail_string(int is_succ)
+{
+   return is_succ? "successful" : "failed";
+}
+
+//Target names
+static const loc_name_val_s_type target_name[] =
+{
+    NAME_VAL(GNSS_NONE),
+    NAME_VAL(GNSS_MSM),
+    NAME_VAL(GNSS_GSS),
+    NAME_VAL(GNSS_MDM),
+    NAME_VAL(GNSS_QCA1530),
+    NAME_VAL(GNSS_AUTO),
+    NAME_VAL(GNSS_UNKNOWN)
+};
+
+static const size_t target_name_num = LOC_TABLE_SIZE(target_name);
+
+/*===========================================================================
+
+FUNCTION loc_get_target_name
+
+DESCRIPTION
+   Returns pointer to a string that contains name of the target
+
+   XX:XX:XX.000\0
+
+RETURN VALUE
+   The target name string
+
+===========================================================================*/
+const char *loc_get_target_name(unsigned int target)
+{
+    int index = 0;
+    static char ret[BUFFER_SIZE];
+
+    index =  getTargetGnssType(target);
+    if( index < 0 || (unsigned)index >= target_name_num )
+        index = target_name_num - 1;
+
+    if( (target & HAS_SSC) == HAS_SSC ) {
+        snprintf(ret, sizeof(ret), " %s with SSC",
+           loc_get_name_from_val(target_name, target_name_num, (long)index) );
+    }
+    else {
+       snprintf(ret, sizeof(ret), " %s  without SSC",
+           loc_get_name_from_val(target_name, target_name_num, (long)index) );
+    }
+    return ret;
+}
+
+
+/*===========================================================================
+
+FUNCTION loc_get_time
+
+DESCRIPTION
+   Logs a callback event header.
+   The pointer time_string should point to a buffer of at least 13 bytes:
+
+   XX:XX:XX.000\0
+
+RETURN VALUE
+   The time string
+
+===========================================================================*/
+char *loc_get_time(char *time_string, size_t buf_size)
+{
+   struct timeval now;     /* sec and usec     */
+   struct tm now_tm;       /* broken-down time */
+   char hms_string[80];    /* HH:MM:SS         */
+
+   gettimeofday(&now, NULL);
+   localtime_r(&now.tv_sec, &now_tm);
+
+   strftime(hms_string, sizeof hms_string, "%H:%M:%S", &now_tm);
+   snprintf(time_string, buf_size, "%s.%03d", hms_string, (int) (now.tv_usec / 1000));
+
+   return time_string;
+}
+
+
+/*===========================================================================
+FUNCTION loc_logger_init
+
+DESCRIPTION
+   Initializes the state of DEBUG_LEVEL and TIMESTAMP
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_logger_init(unsigned long debug, unsigned long timestamp)
+{
+   loc_logger.DEBUG_LEVEL = debug;
+#ifdef TARGET_BUILD_VARIANT_USER
+   // force user builds to 2 or less
+   if (loc_logger.DEBUG_LEVEL > 2) {
+       loc_logger.DEBUG_LEVEL = 2;
+   }
+#endif
+   loc_logger.TIMESTAMP   = timestamp;
+}
+
+
+/*===========================================================================
+FUNCTION get_timestamp
+
+DESCRIPTION
+   Generates a timestamp using the current system time
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Char pointer to the parameter str
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+char * get_timestamp(char *str, unsigned long buf_size)
+{
+  struct timeval tv;
+  struct timezone tz;
+  int hh, mm, ss;
+  gettimeofday(&tv, &tz);
+  hh = tv.tv_sec/3600%24;
+  mm = (tv.tv_sec%3600)/60;
+  ss = tv.tv_sec%60;
+  snprintf(str, buf_size, "%02d:%02d:%02d.%06ld", hh, mm, ss, tv.tv_usec);
+  return str;
+}
+
diff --git a/sdm845/utils/loc_log.h b/sdm845/utils/loc_log.h
new file mode 100644
index 0000000..be492b1
--- /dev/null
+++ b/sdm845/utils/loc_log.h
@@ -0,0 +1,71 @@
+/* Copyright (c) 2011-2012, 2015 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_LOG_H
+#define LOC_LOG_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <ctype.h>
+#include <stdlib.h>
+#include "loc_target.h"
+
+typedef struct
+{
+   const char *name;
+   long        val;
+} loc_name_val_s_type;
+
+#define NAME_VAL(x) {"" #x "", x }
+
+#define UNKNOWN_STR "UNKNOWN"
+
+#define CHECK_MASK(type, value, mask_var, mask) \
+   (((mask_var) & (mask)) ? (type) (value) : (type) (-1))
+
+#define LOC_TABLE_SIZE(table) (sizeof(table)/sizeof((table)[0]))
+
+/* Get names from value */
+const char* loc_get_name_from_mask(const loc_name_val_s_type table[], size_t table_size, long mask);
+const char* loc_get_name_from_val(const loc_name_val_s_type table[], size_t table_size, long value);
+const char* loc_get_msg_q_status(int status);
+const char* loc_get_target_name(unsigned int target);
+
+extern const char* log_succ_fail_string(int is_succ);
+
+extern char *loc_get_time(char *time_string, size_t buf_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LOC_LOG_H */
diff --git a/sdm845/utils/loc_misc_utils.cpp b/sdm845/utils/loc_misc_utils.cpp
new file mode 100644
index 0000000..5d66991
--- /dev/null
+++ b/sdm845/utils/loc_misc_utils.cpp
@@ -0,0 +1,114 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include <platform_lib_log_util.h>
+#include <loc_misc_utils.h>
+#include <ctype.h>
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_misc_utils"
+
+int loc_util_split_string(char *raw_string, char **split_strings_ptr,
+                          int max_num_substrings, char delimiter)
+{
+    int raw_string_index=0;
+    int num_split_strings=0;
+    unsigned char end_string=0;
+    int raw_string_length=0;
+
+    if(!raw_string || !split_strings_ptr) {
+        LOC_LOGE("%s:%d]: NULL parameters", __func__, __LINE__);
+        num_split_strings = -1;
+        goto err;
+    }
+    LOC_LOGD("%s:%d]: raw string: %s\n", __func__, __LINE__, raw_string);
+    raw_string_length = strlen(raw_string) + 1;
+    split_strings_ptr[num_split_strings] = &raw_string[raw_string_index];
+    for(raw_string_index=0; raw_string_index < raw_string_length; raw_string_index++) {
+        if(raw_string[raw_string_index] == '\0')
+            end_string=1;
+        if((raw_string[raw_string_index] == delimiter) || end_string) {
+            raw_string[raw_string_index] = '\0';
+            LOC_LOGD("%s:%d]: split string: %s\n",
+                     __func__, __LINE__, split_strings_ptr[num_split_strings]);
+            num_split_strings++;
+            if(((raw_string_index + 1) < raw_string_length) &&
+               (num_split_strings < max_num_substrings)) {
+                split_strings_ptr[num_split_strings] = &raw_string[raw_string_index+1];
+            }
+            else {
+                break;
+            }
+        }
+        if(end_string)
+            break;
+    }
+err:
+    LOC_LOGD("%s:%d]: num_split_strings: %d\n", __func__, __LINE__, num_split_strings);
+    return num_split_strings;
+}
+
+void loc_util_trim_space(char *org_string)
+{
+    char *scan_ptr, *write_ptr;
+    char *first_nonspace = NULL, *last_nonspace = NULL;
+
+    if(org_string == NULL) {
+        LOC_LOGE("%s:%d]: NULL parameter", __func__, __LINE__);
+        goto err;
+    }
+
+    scan_ptr = write_ptr = org_string;
+
+    while (*scan_ptr) {
+        //Find the first non-space character
+        if ( !isspace(*scan_ptr) && first_nonspace == NULL) {
+            first_nonspace = scan_ptr;
+        }
+        //Once the first non-space character is found in the
+        //above check, keep shifting the characters to the left
+        //to replace the spaces
+        if (first_nonspace != NULL) {
+            *(write_ptr++) = *scan_ptr;
+            //Keep track of which was the last non-space character
+            //encountered
+            //last_nonspace will not be updated in the case where
+            //the string ends with spaces
+            if ( !isspace(*scan_ptr)) {
+                last_nonspace = write_ptr;
+            }
+        }
+        scan_ptr++;
+    }
+    //Add NULL terminator after the last non-space character
+    if (last_nonspace) { *last_nonspace = '\0'; }
+err:
+    return;
+}
diff --git a/sdm845/utils/loc_misc_utils.h b/sdm845/utils/loc_misc_utils.h
new file mode 100644
index 0000000..7d66d84
--- /dev/null
+++ b/sdm845/utils/loc_misc_utils.h
@@ -0,0 +1,99 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef _LOC_MISC_UTILS_H_
+#define _LOC_MISC_UTILS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*===========================================================================
+FUNCTION loc_split_string
+
+DESCRIPTION:
+    This function is used to split a delimiter separated string into
+    sub-strings. This function does not allocate new memory to store the split
+    strings. Instead, it places '\0' in places of delimiters and assings the
+    starting address of the substring within the raw string as the string address
+    The input raw_string no longer remains to be a collection of sub-strings
+    after this function is executed.
+    Please make a copy of the input string before calling this function if
+    necessary
+
+PARAMETERS:
+    char *raw_string: is the original string with delimiter separated substrings
+    char **split_strings_ptr: is the arraw of pointers which will hold the addresses
+                              of individual substrings
+    int max_num_substrings: is the maximum number of substrings that are expected
+                            by the caller. The array of pointers in the above parameter
+                            is usually this long
+    char delimiter: is the delimiter that separates the substrings. Examples: ' ', ';'
+
+DEPENDENCIES
+    N/A
+
+RETURN VALUE
+    int Number of split strings
+
+SIDE EFFECTS
+    The input raw_string no longer remains a delimiter separated single string.
+
+EXAMPLE
+    delimiter = ' ' //space
+    raw_string = "hello new user" //delimiter is space ' '
+    addresses  =  0123456789abcd
+    split_strings_ptr[0] = &raw_string[0]; //split_strings_ptr[0] contains "hello"
+    split_strings_ptr[1] = &raw_string[6]; //split_strings_ptr[1] contains "new"
+    split_strings_ptr[2] = &raw_string[a]; //split_strings_ptr[2] contains "user"
+
+===========================================================================*/
+int loc_util_split_string(char *raw_string, char **split_strings_ptr, int max_num_substrings,
+                     char delimiter);
+
+/*===========================================================================
+FUNCTION trim_space
+
+DESCRIPTION
+   Removes leading and trailing spaces of the string
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void loc_util_trim_space(char *org_string);
+#ifdef __cplusplus
+}
+#endif
+
+#endif //_LOC_MISC_UTILS_H_
diff --git a/sdm845/utils/loc_nmea.cpp b/sdm845/utils/loc_nmea.cpp
new file mode 100644
index 0000000..e288af4
--- /dev/null
+++ b/sdm845/utils/loc_nmea.cpp
@@ -0,0 +1,977 @@
+/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "LocSvc_nmea"
+#include <loc_nmea.h>
+#include <math.h>
+#include <platform_lib_includes.h>
+
+#define GLONASS_SV_ID_OFFSET 64
+#define MAX_SATELLITES_IN_USE 12
+typedef struct loc_nmea_sv_meta_s
+{
+    char talker[3];
+    LocGnssConstellationType svType;
+    uint32_t mask;
+    uint32_t svCount;
+    uint32_t svIdOffset;
+} loc_nmea_sv_meta;
+
+typedef struct loc_sv_cache_info_s
+{
+    uint32_t gps_used_mask;
+    uint32_t glo_used_mask;
+    uint32_t gal_used_mask;
+    uint32_t gps_count;
+    uint32_t glo_count;
+    uint32_t gal_count;
+    float hdop;
+    float pdop;
+    float vdop;
+} loc_sv_cache_info;
+
+static loc_sv_cache_info sv_cache_info;
+
+/*===========================================================================
+FUNCTION    loc_nmea_sv_meta_init
+
+DESCRIPTION
+   Init loc_nmea_sv_meta passed in
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   Pointer to loc_nmea_sv_meta
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static loc_nmea_sv_meta* loc_nmea_sv_meta_init(loc_nmea_sv_meta& sv_meta,
+                                               GnssSvType svType,
+                                               bool needCombine)
+{
+    memset(&sv_meta, 0, sizeof(sv_meta));
+    sv_meta.svType = svType;
+    sv_meta.talker[0] = 'G';
+
+    switch (svType)
+    {
+        case GNSS_SV_TYPE_GPS:
+            sv_meta.talker[1] = 'P';
+            sv_meta.mask = sv_cache_info.gps_used_mask;
+            sv_meta.svCount = sv_cache_info.gps_count;
+            break;
+        case GNSS_SV_TYPE_GLONASS:
+            sv_meta.talker[1] = 'L';
+            sv_meta.mask = sv_cache_info.glo_used_mask;
+            sv_meta.svCount = sv_cache_info.glo_count;
+            // GLONASS SV ids are from 65-96
+            sv_meta.svIdOffset = GLONASS_SV_ID_OFFSET;
+            break;
+        case GNSS_SV_TYPE_GALILEO:
+            sv_meta.talker[1] = 'A';
+            sv_meta.mask = sv_cache_info.gal_used_mask;
+            sv_meta.svCount = sv_cache_info.gal_count;
+            break;
+        default:
+            LOC_LOGE("NMEA Error unknow constellation type: %d", svType);
+            return NULL;
+    }
+    if (needCombine &&
+                (sv_cache_info.gps_used_mask ? 1 : 0) +
+                (sv_cache_info.glo_used_mask ? 1 : 0) +
+                (sv_cache_info.gal_used_mask ? 1 : 0) > 1)
+    {
+        // If GPS, GLONASS, Galileo etc. are combined
+        // to obtain the reported position solution,
+        // talker shall be set to GN, to indicate that
+        // the satellites are used in a combined solution
+        sv_meta.talker[1] = 'N';
+    }
+    return &sv_meta;
+}
+
+/*===========================================================================
+FUNCTION    loc_nmea_put_checksum
+
+DESCRIPTION
+   Generate NMEA sentences generated based on position report
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   Total length of the nmea sentence
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static int loc_nmea_put_checksum(char *pNmea, int maxSize)
+{
+    uint8_t checksum = 0;
+    int length = 0;
+    if(NULL == pNmea)
+        return 0;
+
+    pNmea++; //skip the $
+    while (*pNmea != '\0')
+    {
+        checksum ^= *pNmea++;
+        length++;
+    }
+
+    // length now contains nmea sentence string length not including $ sign.
+    int checksumLength = snprintf(pNmea,(maxSize-length-1),"*%02X\r\n", checksum);
+
+    // total length of nmea sentence is length of nmea sentence inc $ sign plus
+    // length of checksum (+1 is to cover the $ character in the length).
+    return (length + checksumLength + 1);
+}
+
+/*===========================================================================
+FUNCTION    loc_nmea_generate_GSA
+
+DESCRIPTION
+   Generate NMEA GSA sentences generated based on position report
+   Currently below sentences are generated:
+   - $GPGSA : GPS DOP and active SVs
+   - $GLGSA : GLONASS DOP and active SVs
+   - $GAGSA : GALILEO DOP and active SVs
+   - $GNGSA : GNSS DOP and active SVs
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   Number of SVs used
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static uint32_t loc_nmea_generate_GSA(const GpsLocationExtended &locationExtended,
+                              char* sentence,
+                              int bufSize,
+                              loc_nmea_sv_meta* sv_meta_p,
+                              std::vector<std::string> &nmeaArraystr)
+{
+    if (!sentence || bufSize <= 0 || !sv_meta_p)
+    {
+        LOC_LOGE("NMEA Error invalid arguments.");
+        return 0;
+    }
+
+    char* pMarker = sentence;
+    int lengthRemaining = bufSize;
+    int length = 0;
+
+    uint32_t svUsedCount = 0;
+    uint32_t svUsedList[32] = {0};
+
+    char fixType = '\0';
+
+    const char* talker = sv_meta_p->talker;
+    uint32_t svIdOffset = sv_meta_p->svIdOffset;
+    uint32_t mask = sv_meta_p->mask;
+
+    for (uint8_t i = 1; mask > 0 && svUsedCount < 32; i++)
+    {
+        if (mask & 1)
+            svUsedList[svUsedCount++] = i + svIdOffset;
+        mask = mask >> 1;
+    }
+
+    if (svUsedCount == 0 && GNSS_SV_TYPE_GPS != sv_meta_p->svType)
+        return 0;
+
+    if (svUsedCount == 0)
+        fixType = '1'; // no fix
+    else if (svUsedCount <= 3)
+        fixType = '2'; // 2D fix
+    else
+        fixType = '3'; // 3D fix
+
+    // Start printing the sentence
+    // Format: $--GSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,p.p,h.h,v.v*cc
+    // a : Mode  : A : Automatic, allowed to automatically switch 2D/3D
+    // x : Fixtype : 1 (no fix), 2 (2D fix), 3 (3D fix)
+    // xx : 12 SV ID
+    // p.p : Position DOP (Dilution of Precision)
+    // h.h : Horizontal DOP
+    // v.v : Vertical DOP
+    // cc : Checksum value
+    length = snprintf(pMarker, lengthRemaining, "$%sGSA,A,%c,", talker, fixType);
+
+    if (length < 0 || length >= lengthRemaining)
+    {
+        LOC_LOGE("NMEA Error in string formatting");
+        return 0;
+    }
+    pMarker += length;
+    lengthRemaining -= length;
+
+    // Add first 12 satellite IDs
+    for (uint8_t i = 0; i < 12; i++)
+    {
+        if (i < svUsedCount)
+            length = snprintf(pMarker, lengthRemaining, "%02d,", svUsedList[i]);
+        else
+            length = snprintf(pMarker, lengthRemaining, ",");
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return 0;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+    }
+
+    // Add the position/horizontal/vertical DOP values
+    if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_DOP)
+    {
+        length = snprintf(pMarker, lengthRemaining, "%.1f,%.1f,%.1f",
+                locationExtended.pdop,
+                locationExtended.hdop,
+                locationExtended.vdop);
+    }
+    else
+    {   // no dop
+        length = snprintf(pMarker, lengthRemaining, ",,");
+    }
+
+    /* Sentence is ready, add checksum and broadcast */
+    length = loc_nmea_put_checksum(sentence, bufSize);
+    nmeaArraystr.push_back(sentence);
+
+    return svUsedCount;
+}
+
+/*===========================================================================
+FUNCTION    loc_nmea_generate_GSV
+
+DESCRIPTION
+   Generate NMEA GSV sentences generated based on sv report
+   Currently below sentences are generated:
+   - $GPGSV: GPS Satellites in View
+   - $GNGSV: GLONASS Satellites in View
+   - $GAGSV: GALILEO Satellites in View
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   NONE
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static void loc_nmea_generate_GSV(const GnssSvNotification &svNotify,
+                              char* sentence,
+                              int bufSize,
+                              loc_nmea_sv_meta* sv_meta_p,
+                              std::vector<std::string> &nmeaArraystr)
+{
+    if (!sentence || bufSize <= 0)
+    {
+        LOC_LOGE("NMEA Error invalid argument.");
+        return;
+    }
+
+    char* pMarker = sentence;
+    int lengthRemaining = bufSize;
+    int length = 0;
+    int sentenceCount = 0;
+    int sentenceNumber = 1;
+    size_t svNumber = 1;
+
+    const char* talker = sv_meta_p->talker;
+    uint32_t svIdOffset = sv_meta_p->svIdOffset;
+    int svCount = sv_meta_p->svCount;
+
+    if (svCount <= 0)
+    {
+        // no svs in view, so just send a blank $--GSV sentence
+        snprintf(sentence, lengthRemaining, "$%sGSV,1,1,0,", talker);
+        length = loc_nmea_put_checksum(sentence, bufSize);
+        nmeaArraystr.push_back(sentence);
+        return;
+    }
+
+    svNumber = 1;
+    sentenceNumber = 1;
+    sentenceCount = svCount / 4 + (svCount % 4 != 0);
+
+    while (sentenceNumber <= sentenceCount)
+    {
+        pMarker = sentence;
+        lengthRemaining = bufSize;
+
+        length = snprintf(pMarker, lengthRemaining, "$%sGSV,%d,%d,%02d",
+                talker, sentenceCount, sentenceNumber, svCount);
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        for (int i=0; (svNumber <= svNotify.count) && (i < 4);  svNumber++)
+        {
+            if (sv_meta_p->svType == svNotify.gnssSvs[svNumber - 1].type)
+            {
+                length = snprintf(pMarker, lengthRemaining,",%02d,%02d,%03d,",
+                        svNotify.gnssSvs[svNumber - 1].svId + svIdOffset,
+                        (int)(0.5 + svNotify.gnssSvs[svNumber - 1].elevation), //float to int
+                        (int)(0.5 + svNotify.gnssSvs[svNumber - 1].azimuth)); //float to int
+
+                if (length < 0 || length >= lengthRemaining)
+                {
+                    LOC_LOGE("NMEA Error in string formatting");
+                    return;
+                }
+                pMarker += length;
+                lengthRemaining -= length;
+
+                if (svNotify.gnssSvs[svNumber - 1].cN0Dbhz > 0)
+                {
+                    length = snprintf(pMarker, lengthRemaining,"%02d",
+                            (int)(0.5 + svNotify.gnssSvs[svNumber - 1].cN0Dbhz)); //float to int
+
+                    if (length < 0 || length >= lengthRemaining)
+                    {
+                        LOC_LOGE("NMEA Error in string formatting");
+                        return;
+                    }
+                    pMarker += length;
+                    lengthRemaining -= length;
+                }
+
+                i++;
+            }
+
+        }
+
+        length = loc_nmea_put_checksum(sentence, bufSize);
+        nmeaArraystr.push_back(sentence);
+        sentenceNumber++;
+
+    }  //while
+}
+
+/*===========================================================================
+FUNCTION    loc_nmea_generate_pos
+
+DESCRIPTION
+   Generate NMEA sentences generated based on position report
+   Currently below sentences are generated within this function:
+   - $GPGSA : GPS DOP and active SVs
+   - $GLGSA : GLONASS DOP and active SVs
+   - $GAGSA : GALILEO DOP and active SVs
+   - $GNGSA : GNSS DOP and active SVs
+   - $--VTG : Track made good and ground speed
+   - $--RMC : Recommended minimum navigation information
+   - $--GGA : Time, position and fix related data
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   0
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+void loc_nmea_generate_pos(const UlpLocation &location,
+                               const GpsLocationExtended &locationExtended,
+                               unsigned char generate_nmea,
+                               std::vector<std::string> &nmeaArraystr)
+{
+    ENTRY_LOG();
+    time_t utcTime(location.gpsLocation.timestamp/1000);
+    tm * pTm = gmtime(&utcTime);
+    if (NULL == pTm) {
+        LOC_LOGE("gmtime failed");
+        return;
+    }
+
+    char sentence[NMEA_SENTENCE_MAX_LENGTH] = {0};
+    char* pMarker = sentence;
+    int lengthRemaining = sizeof(sentence);
+    int length = 0;
+    int utcYear = pTm->tm_year % 100; // 2 digit year
+    int utcMonth = pTm->tm_mon + 1; // tm_mon starts at zero
+    int utcDay = pTm->tm_mday;
+    int utcHours = pTm->tm_hour;
+    int utcMinutes = pTm->tm_min;
+    int utcSeconds = pTm->tm_sec;
+    int utcMSeconds = (location.gpsLocation.timestamp)%1000;
+
+    if (generate_nmea) {
+        char talker[3] = {'G', 'P', '\0'};
+        uint32_t svUsedCount = 0;
+        uint32_t count = 0;
+        loc_nmea_sv_meta sv_meta;
+        // -------------------
+        // ---$GPGSA/$GNGSA---
+        // -------------------
+
+        count = loc_nmea_generate_GSA(locationExtended, sentence, sizeof(sentence),
+                loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GPS, true), nmeaArraystr);
+        if (count > 0)
+        {
+            svUsedCount += count;
+            talker[1] = sv_meta.talker[1];
+        }
+
+        // -------------------
+        // ---$GLGSA/$GNGSA---
+        // -------------------
+
+        count = loc_nmea_generate_GSA(locationExtended, sentence, sizeof(sentence),
+                loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GLONASS, true), nmeaArraystr);
+        if (count > 0)
+        {
+            svUsedCount += count;
+            talker[1] = sv_meta.talker[1];
+        }
+
+        // -------------------
+        // ---$GAGSA/$GNGSA---
+        // -------------------
+
+        count = loc_nmea_generate_GSA(locationExtended, sentence, sizeof(sentence),
+                loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GALILEO, true), nmeaArraystr);
+        if (count > 0)
+        {
+            svUsedCount += count;
+            talker[1] = sv_meta.talker[1];
+        }
+
+        // -------------------
+        // ------$--VTG-------
+        // -------------------
+
+        pMarker = sentence;
+        lengthRemaining = sizeof(sentence);
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_BEARING)
+        {
+            float magTrack = location.gpsLocation.bearing;
+            if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_MAG_DEV)
+            {
+                float magTrack = location.gpsLocation.bearing - locationExtended.magneticDeviation;
+                if (magTrack < 0.0)
+                    magTrack += 360.0;
+                else if (magTrack > 360.0)
+                    magTrack -= 360.0;
+            }
+
+            length = snprintf(pMarker, lengthRemaining, "$%sVTG,%.1lf,T,%.1lf,M,", talker, location.gpsLocation.bearing, magTrack);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining, "$%sVTG,,T,,M,", talker);
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_SPEED)
+        {
+            float speedKnots = location.gpsLocation.speed * (3600.0/1852.0);
+            float speedKmPerHour = location.gpsLocation.speed * 3.6;
+
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,N,%.1lf,K,", speedKnots, speedKmPerHour);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining, ",N,,K,");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (!(location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_LAT_LONG))
+            // N means no fix
+            length = snprintf(pMarker, lengthRemaining, "%c", 'N');
+        else if (LOC_NAV_MASK_SBAS_CORRECTION_IONO & locationExtended.navSolutionMask)
+            // D means differential
+            length = snprintf(pMarker, lengthRemaining, "%c", 'D');
+        else if (LOC_POS_TECH_MASK_SENSORS == locationExtended.tech_mask)
+            // E means estimated (dead reckoning)
+            length = snprintf(pMarker, lengthRemaining, "%c", 'E');
+        else // A means autonomous
+            length = snprintf(pMarker, lengthRemaining, "%c", 'A');
+
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        // -------------------
+        // ------$--RMC-------
+        // -------------------
+
+        pMarker = sentence;
+        lengthRemaining = sizeof(sentence);
+
+        length = snprintf(pMarker, lengthRemaining, "$%sRMC,%02d%02d%02d.%02d,A," ,
+                          talker, utcHours, utcMinutes, utcSeconds,utcMSeconds/10);
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_LAT_LONG)
+        {
+            double latitude = location.gpsLocation.latitude;
+            double longitude = location.gpsLocation.longitude;
+            char latHemisphere;
+            char lonHemisphere;
+            double latMinutes;
+            double lonMinutes;
+
+            if (latitude > 0)
+            {
+                latHemisphere = 'N';
+            }
+            else
+            {
+                latHemisphere = 'S';
+                latitude *= -1.0;
+            }
+
+            if (longitude < 0)
+            {
+                lonHemisphere = 'W';
+                longitude *= -1.0;
+            }
+            else
+            {
+                lonHemisphere = 'E';
+            }
+
+            latMinutes = fmod(latitude * 60.0 , 60.0);
+            lonMinutes = fmod(longitude * 60.0 , 60.0);
+
+            length = snprintf(pMarker, lengthRemaining, "%02d%09.6lf,%c,%03d%09.6lf,%c,",
+                              (uint8_t)floor(latitude), latMinutes, latHemisphere,
+                              (uint8_t)floor(longitude),lonMinutes, lonHemisphere);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining,",,,,");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_SPEED)
+        {
+            float speedKnots = location.gpsLocation.speed * (3600.0/1852.0);
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,", speedKnots);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining, ",");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_BEARING)
+        {
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,", location.gpsLocation.bearing);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining, ",");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        length = snprintf(pMarker, lengthRemaining, "%2.2d%2.2d%2.2d,",
+                          utcDay, utcMonth, utcYear);
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_MAG_DEV)
+        {
+            float magneticVariation = locationExtended.magneticDeviation;
+            char direction;
+            if (magneticVariation < 0.0)
+            {
+                direction = 'W';
+                magneticVariation *= -1.0;
+            }
+            else
+            {
+                direction = 'E';
+            }
+
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,%c,",
+                              magneticVariation, direction);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining, ",,");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (!(location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_LAT_LONG))
+            // N means no fix
+            length = snprintf(pMarker, lengthRemaining, "%c", 'N');
+        else if (LOC_NAV_MASK_SBAS_CORRECTION_IONO & locationExtended.navSolutionMask)
+            // D means differential
+            length = snprintf(pMarker, lengthRemaining, "%c", 'D');
+        else if (LOC_POS_TECH_MASK_SENSORS == locationExtended.tech_mask)
+            // E means estimated (dead reckoning)
+            length = snprintf(pMarker, lengthRemaining, "%c", 'E');
+        else  // A means autonomous
+            length = snprintf(pMarker, lengthRemaining, "%c", 'A');
+
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        // -------------------
+        // ------$--GGA-------
+        // -------------------
+
+        pMarker = sentence;
+        lengthRemaining = sizeof(sentence);
+
+        length = snprintf(pMarker, lengthRemaining, "$%sGGA,%02d%02d%02d.%02d," ,
+                          talker, utcHours, utcMinutes, utcSeconds, utcMSeconds/10);
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_LAT_LONG)
+        {
+            double latitude = location.gpsLocation.latitude;
+            double longitude = location.gpsLocation.longitude;
+            char latHemisphere;
+            char lonHemisphere;
+            double latMinutes;
+            double lonMinutes;
+
+            if (latitude > 0)
+            {
+                latHemisphere = 'N';
+            }
+            else
+            {
+                latHemisphere = 'S';
+                latitude *= -1.0;
+            }
+
+            if (longitude < 0)
+            {
+                lonHemisphere = 'W';
+                longitude *= -1.0;
+            }
+            else
+            {
+                lonHemisphere = 'E';
+            }
+
+            latMinutes = fmod(latitude * 60.0 , 60.0);
+            lonMinutes = fmod(longitude * 60.0 , 60.0);
+
+            length = snprintf(pMarker, lengthRemaining, "%02d%09.6lf,%c,%03d%09.6lf,%c,",
+                              (uint8_t)floor(latitude), latMinutes, latHemisphere,
+                              (uint8_t)floor(longitude),lonMinutes, lonHemisphere);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining,",,,,");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        char gpsQuality;
+        if (!(location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_LAT_LONG))
+            gpsQuality = '0'; // 0 means no fix
+        else if (LOC_NAV_MASK_SBAS_CORRECTION_IONO & locationExtended.navSolutionMask)
+            gpsQuality = '2'; // 2 means DGPS fix
+        else if (LOC_POS_TECH_MASK_SENSORS == locationExtended.tech_mask)
+            gpsQuality = '6'; // 6 means estimated (dead reckoning)
+        else
+            gpsQuality = '1'; // 1 means GPS fix
+
+        // Number of satellites in use, 00-12
+        if (svUsedCount > MAX_SATELLITES_IN_USE)
+            svUsedCount = MAX_SATELLITES_IN_USE;
+        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_DOP)
+        {
+            length = snprintf(pMarker, lengthRemaining, "%c,%02d,%.1f,",
+                              gpsQuality, svUsedCount, locationExtended.hdop);
+        }
+        else
+        {   // no hdop
+            length = snprintf(pMarker, lengthRemaining, "%c,%02d,,",
+                              gpsQuality, svUsedCount);
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_ALTITUDE_MEAN_SEA_LEVEL)
+        {
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,M,",
+                              locationExtended.altitudeMeanSeaLevel);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining,",,");
+        }
+
+        if (length < 0 || length >= lengthRemaining)
+        {
+            LOC_LOGE("NMEA Error in string formatting");
+            return;
+        }
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if ((location.gpsLocation.flags & LOC_GPS_LOCATION_HAS_ALTITUDE) &&
+            (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_ALTITUDE_MEAN_SEA_LEVEL))
+        {
+            length = snprintf(pMarker, lengthRemaining, "%.1lf,M,,",
+                              location.gpsLocation.altitude - locationExtended.altitudeMeanSeaLevel);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining,",,,");
+        }
+
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        // clear the cache so they can't be used again
+        sv_cache_info.gps_used_mask = 0;
+        sv_cache_info.glo_used_mask = 0;
+        sv_cache_info.gal_used_mask = 0;
+    }
+    //Send blank NMEA reports for non-final fixes
+    else {
+        strlcpy(sentence, "$GPGSA,A,1,,,,,,,,,,,,,,,", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        strlcpy(sentence, "$GNGSA,A,1,,,,,,,,,,,,,,,", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        strlcpy(sentence, "$GPVTG,,T,,M,,N,,K,N", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        strlcpy(sentence, "$GPRMC,,V,,,,,,,,,,N", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
+        strlcpy(sentence, "$GPGGA,,,,,,0,,,,,,,,", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+    }
+
+    EXIT_LOG(%d, 0);
+}
+
+
+
+/*===========================================================================
+FUNCTION    loc_nmea_generate_sv
+
+DESCRIPTION
+   Generate NMEA sentences generated based on sv report
+
+DEPENDENCIES
+   NONE
+
+RETURN VALUE
+   0
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+void loc_nmea_generate_sv(const GnssSvNotification &svNotify,
+                              std::vector<std::string> &nmeaArraystr)
+{
+    ENTRY_LOG();
+
+    char sentence[NMEA_SENTENCE_MAX_LENGTH] = {0};
+    char* pMarker = sentence;
+    int lengthRemaining = sizeof(sentence);
+    int length = 0;
+    int svCount = svNotify.count;
+    int sentenceCount = 0;
+    int sentenceNumber = 1;
+    int svNumber = 1;
+
+    //Count GPS SVs for saparating GPS from GLONASS and throw others
+
+    sv_cache_info.gps_used_mask = 0;
+    sv_cache_info.glo_used_mask = 0;
+    sv_cache_info.gal_used_mask = 0;
+
+    sv_cache_info.gps_count = 0;
+    sv_cache_info.glo_count = 0;
+    sv_cache_info.gal_count = 0;
+    for(svNumber=1; svNumber <= svCount; svNumber++) {
+        if (GNSS_SV_TYPE_GPS == svNotify.gnssSvs[svNumber - 1].type)
+        {
+            // cache the used in fix mask, as it will be needed to send $GPGSA
+            // during the position report
+            if (GNSS_SV_OPTIONS_USED_IN_FIX_BIT ==
+                    (svNotify.gnssSvs[svNumber - 1].gnssSvOptionsMask &
+                      GNSS_SV_OPTIONS_USED_IN_FIX_BIT))
+            {
+                sv_cache_info.gps_used_mask |= (1 << (svNotify.gnssSvs[svNumber - 1].svId - 1));
+            }
+            sv_cache_info.gps_count++;
+        }
+        else if (GNSS_SV_TYPE_GLONASS == svNotify.gnssSvs[svNumber - 1].type)
+        {
+            // cache the used in fix mask, as it will be needed to send $GNGSA
+            // during the position report
+            if (GNSS_SV_OPTIONS_USED_IN_FIX_BIT ==
+                    (svNotify.gnssSvs[svNumber - 1].gnssSvOptionsMask &
+                      GNSS_SV_OPTIONS_USED_IN_FIX_BIT))
+            {
+                sv_cache_info.glo_used_mask |= (1 << (svNotify.gnssSvs[svNumber - 1].svId - 1));
+            }
+            sv_cache_info.glo_count++;
+        }
+        else if (GNSS_SV_TYPE_GALILEO == svNotify.gnssSvs[svNumber - 1].type)
+        {
+            // cache the used in fix mask, as it will be needed to send $GAGSA
+            // during the position report
+            if (GNSS_SV_OPTIONS_USED_IN_FIX_BIT ==
+                    (svNotify.gnssSvs[svNumber - 1].gnssSvOptionsMask &
+                      GNSS_SV_OPTIONS_USED_IN_FIX_BIT))
+            {
+                sv_cache_info.gal_used_mask |= (1 << (svNotify.gnssSvs[svNumber - 1].svId - 1));
+            }
+            sv_cache_info.gal_count++;
+        }
+    }
+
+    loc_nmea_sv_meta sv_meta;
+    // ------------------
+    // ------$GPGSV------
+    // ------------------
+
+    loc_nmea_generate_GSV(svNotify, sentence, sizeof(sentence),
+            loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GPS, false), nmeaArraystr);
+
+    // ------------------
+    // ------$GLGSV------
+    // ------------------
+
+    loc_nmea_generate_GSV(svNotify, sentence, sizeof(sentence),
+            loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GLONASS, false), nmeaArraystr);
+
+    // ------------------
+    // ------$GAGSV------
+    // ------------------
+
+    loc_nmea_generate_GSV(svNotify, sentence, sizeof(sentence),
+            loc_nmea_sv_meta_init(sv_meta, GNSS_SV_TYPE_GALILEO, false), nmeaArraystr);
+
+    EXIT_LOG(%d, 0);
+}
diff --git a/sdm845/utils/loc_nmea.h b/sdm845/utils/loc_nmea.h
new file mode 100644
index 0000000..585a9c1
--- /dev/null
+++ b/sdm845/utils/loc_nmea.h
@@ -0,0 +1,54 @@
+/* Copyright (c) 2012-2013, 2015-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef LOC_ENG_NMEA_H
+#define LOC_ENG_NMEA_H
+
+#include <gps_extended.h>
+#include <vector>
+#include <string>
+#define NMEA_SENTENCE_MAX_LENGTH 200
+
+void loc_nmea_generate_sv(const GnssSvNotification &svNotify,
+                              std::vector<std::string> &nmeaArraystr);
+
+void loc_nmea_generate_pos(const UlpLocation &location,
+                               const GpsLocationExtended &locationExtended,
+                               unsigned char generate_nmea,
+                               std::vector<std::string> &nmeaArraystr);
+
+#define DEBUG_NMEA_MINSIZE 6
+#define DEBUG_NMEA_MAXSIZE 4096
+inline bool loc_nmea_is_debug(const char* nmea, int length) {
+    return ((nullptr != nmea) &&
+            (length >= DEBUG_NMEA_MINSIZE) && (length <= DEBUG_NMEA_MAXSIZE) &&
+            (nmea[0] == '$') && (nmea[1] == 'P') && (nmea[2] == 'Q') && (nmea[3] == 'W'));
+}
+
+#endif // LOC_ENG_NMEA_H
diff --git a/sdm845/utils/loc_target.cpp b/sdm845/utils/loc_target.cpp
new file mode 100644
index 0000000..7e475eb
--- /dev/null
+++ b/sdm845/utils/loc_target.cpp
@@ -0,0 +1,296 @@
+/* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <cutils/properties.h>
+#include "loc_target.h"
+#include "loc_log.h"
+#include <platform_lib_includes.h>
+
+#define APQ8064_ID_1 "109"
+#define APQ8064_ID_2 "153"
+#define MPQ8064_ID_1 "130"
+#define MSM8930_ID_1 "142"
+#define MSM8930_ID_2 "116"
+#define APQ8030_ID_1 "157"
+#define APQ8074_ID_1 "184"
+
+#define LINE_LEN 100
+#define STR_LIQUID      "Liquid"
+#define STR_SURF        "Surf"
+#define STR_MTP         "MTP"
+#define STR_APQ         "apq"
+#define STR_SDC         "sdc"  // alternative string for APQ targets
+#define STR_MSM         "msm"
+#define STR_SDM         "sdm"  // alternative string for MSM targets
+#define STR_APQ_NO_WGR  "baseband_apq_nowgr"
+#define STR_AUTO        "auto"
+#define IS_STR_END(c) ((c) == '\0' || (c) == '\n' || (c) == '\r')
+#define LENGTH(s) (sizeof(s) - 1)
+#define GPS_CHECK_NO_ERROR 0
+#define GPS_CHECK_NO_GPS_HW 1
+/* When system server is started, it uses 20 seconds as ActivityManager
+ * timeout. After that it sends SIGSTOP signal to process.
+ */
+#define QCA1530_DETECT_TIMEOUT 15
+#define QCA1530_DETECT_PRESENT "yes"
+#define QCA1530_DETECT_PROGRESS "detect"
+
+static unsigned int gTarget = (unsigned int)-1;
+
+static int read_a_line(const char * file_path, char * line, int line_size)
+{
+    FILE *fp;
+    int result = 0;
+
+    * line = '\0';
+    fp = fopen(file_path, "r" );
+    if( fp == NULL ) {
+        LOC_LOGE("open failed: %s: %s\n", file_path, strerror(errno));
+        result = -1;
+    } else {
+        int len;
+        fgets(line, line_size, fp);
+        len = strlen(line);
+        len = len < line_size - 1? len : line_size - 1;
+        line[len] = '\0';
+        LOC_LOGD("cat %s: %s", file_path, line);
+        fclose(fp);
+    }
+    return result;
+}
+
+/*!
+ * \brief Checks if QCA1530 is avalable.
+ *
+ * Function verifies if qca1530 SoC is configured on the device. The test is
+ * based on property value. For 1530 scenario, the value shall be one of the
+ * following: "yes", "no", "detect". All other values are treated equally to
+ * "no". When the value is "detect" the system waits for SoC detection to
+ * finish before returning result.
+ *
+ * \retval true - QCA1530 is available.
+ * \retval false - QCA1530 is not available.
+ */
+static bool is_qca1530(void)
+{
+    static const char qca1530_property_name[] = "sys.qca1530";
+    bool res = false;
+    int ret, i;
+    char buf[PROPERTY_VALUE_MAX];
+
+    memset(buf, 0, sizeof(buf));
+
+    for (i = 0; i < QCA1530_DETECT_TIMEOUT; ++i)
+    {
+        ret = platform_lib_abstraction_property_get(qca1530_property_name, buf, NULL);
+        if (ret < 0)
+        {
+            LOC_LOGV( "qca1530: property %s is not accessible, ret=%d",
+                  qca1530_property_name,
+                  ret);
+
+            break;
+        }
+
+        LOC_LOGV( "qca1530: property %s is set to %s",
+                  qca1530_property_name,
+                  buf);
+
+        if (!memcmp(buf, QCA1530_DETECT_PRESENT,
+                    sizeof(QCA1530_DETECT_PRESENT)))
+        {
+            res = true;
+            break;
+        }
+        if (!memcmp(buf, QCA1530_DETECT_PROGRESS,
+                    sizeof(QCA1530_DETECT_PROGRESS)))
+        {
+            LOC_LOGV("qca1530: SoC detection is in progress.");
+            sleep(1);
+            continue;
+        }
+        break;
+    }
+
+    LOC_LOGD("qca1530: detected=%s", res ? "true" : "false");
+    return res;
+}
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_target_baseband(char *baseband, int array_length)
+{
+    if(baseband && (array_length >= PROPERTY_VALUE_MAX)) {
+        property_get("ro.baseband", baseband, "");
+        LOC_LOGD("%s:%d]: Baseband: %s\n", __func__, __LINE__, baseband);
+    }
+    else {
+        LOC_LOGE("%s:%d]: NULL parameter or array length less than PROPERTY_VALUE_MAX\n",
+                 __func__, __LINE__);
+    }
+}
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_platform_name(char *platform_name, int array_length)
+{
+    if(platform_name && (array_length >= PROPERTY_VALUE_MAX)) {
+        property_get("ro.board.platform", platform_name, "");
+        LOC_LOGD("%s:%d]: Target name: %s\n", __func__, __LINE__, platform_name);
+    }
+    else {
+        LOC_LOGE("%s:%d]: Null parameter or array length less than PROPERTY_VALUE_MAX\n",
+                 __func__, __LINE__);
+    }
+}
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_auto_platform_name(char *platform_name, int array_length)
+{
+    if(platform_name && (array_length >= PROPERTY_VALUE_MAX)) {
+        property_get("ro.hardware.type", platform_name, "");
+        LOC_LOGD("%s:%d]: Autoplatform name: %s\n", __func__, __LINE__, platform_name);
+    }
+    else {
+        LOC_LOGE("%s:%d]: Null parameter or array length less than PROPERTY_VALUE_MAX\n",
+                 __func__, __LINE__);
+    }
+}
+
+unsigned int loc_get_target(void)
+{
+    if (gTarget != (unsigned int)-1)
+        return gTarget;
+
+    static const char hw_platform[]      = "/sys/devices/soc0/hw_platform";
+    static const char id[]               = "/sys/devices/soc0/soc_id";
+    static const char hw_platform_dep[]  =
+        "/sys/devices/system/soc/soc0/hw_platform";
+    static const char id_dep[]           = "/sys/devices/system/soc/soc0/id";
+    static const char mdm[]              = "/target"; // mdm target we are using
+
+    char rd_hw_platform[LINE_LEN];
+    char rd_id[LINE_LEN];
+    char rd_mdm[LINE_LEN];
+    char baseband[LINE_LEN];
+    char rd_auto_platform[LINE_LEN];
+
+    if (is_qca1530()) {
+        gTarget = TARGET_QCA1530;
+        goto detected;
+    }
+
+    loc_get_target_baseband(baseband, sizeof(baseband));
+
+    if (!access(hw_platform, F_OK)) {
+        read_a_line(hw_platform, rd_hw_platform, LINE_LEN);
+    } else {
+        read_a_line(hw_platform_dep, rd_hw_platform, LINE_LEN);
+    }
+    if (!access(id, F_OK)) {
+        read_a_line(id, rd_id, LINE_LEN);
+    } else {
+        read_a_line(id_dep, rd_id, LINE_LEN);
+    }
+
+    /*check automotive platform*/
+    loc_get_auto_platform_name(rd_auto_platform, sizeof(rd_auto_platform));
+    if( !memcmp(rd_auto_platform, STR_AUTO, LENGTH(STR_AUTO)) )
+    {
+          gTarget = TARGET_AUTO;
+          goto detected;
+    }
+
+    if( !memcmp(baseband, STR_APQ_NO_WGR, LENGTH(STR_APQ_NO_WGR)) ){
+
+        gTarget = TARGET_NO_GNSS;
+        goto detected;
+    }
+
+    if( !memcmp(baseband, STR_APQ, LENGTH(STR_APQ)) ||
+            !memcmp(baseband, STR_SDC, LENGTH(STR_SDC)) ){
+
+        if( !memcmp(rd_id, MPQ8064_ID_1, LENGTH(MPQ8064_ID_1))
+            && IS_STR_END(rd_id[LENGTH(MPQ8064_ID_1)]) )
+            gTarget = TARGET_NO_GNSS;
+        else
+            gTarget = TARGET_APQ_SA;
+    }
+    else {
+        if( (!memcmp(rd_hw_platform, STR_LIQUID, LENGTH(STR_LIQUID))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_LIQUID)])) ||
+            (!memcmp(rd_hw_platform, STR_SURF,   LENGTH(STR_SURF))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_SURF)])) ||
+            (!memcmp(rd_hw_platform, STR_MTP,   LENGTH(STR_MTP))
+             && IS_STR_END(rd_hw_platform[LENGTH(STR_MTP)]))) {
+
+            if (!read_a_line( mdm, rd_mdm, LINE_LEN))
+                gTarget = TARGET_MDM;
+        }
+
+        else if( (!memcmp(rd_id, MSM8930_ID_1, LENGTH(MSM8930_ID_1))
+                   && IS_STR_END(rd_id[LENGTH(MSM8930_ID_1)])) ||
+                  (!memcmp(rd_id, MSM8930_ID_2, LENGTH(MSM8930_ID_2))
+                   && IS_STR_END(rd_id[LENGTH(MSM8930_ID_2)])) )
+             gTarget = TARGET_MSM_NO_SSC;
+
+        else if ( !memcmp(baseband, STR_MSM, LENGTH(STR_MSM)) ||
+                    !memcmp(baseband, STR_SDM, LENGTH(STR_SDM)) )
+             gTarget = TARGET_DEFAULT;
+
+        else
+             gTarget = TARGET_UNKNOWN;
+    }
+
+detected:
+    LOC_LOGD("HAL: %s returned %d", __FUNCTION__, gTarget);
+    return gTarget;
+}
+
+/*Reads the property ro.lean to identify if this is a lean target
+  Returns:
+  0 if not a lean and mean target
+  1 if this is a lean and mean target
+*/
+int loc_identify_lean_target()
+{
+    int ret = 0;
+    char lean_target[PROPERTY_VALUE_MAX];
+    property_get("ro.lean", lean_target, "");
+    LOC_LOGD("%s:%d]: lean target: %s\n", __func__, __LINE__, lean_target);
+    return !(strncmp(lean_target, "true", PROPERTY_VALUE_MAX));
+}
diff --git a/sdm845/utils/loc_target.h b/sdm845/utils/loc_target.h
new file mode 100644
index 0000000..69395db
--- /dev/null
+++ b/sdm845/utils/loc_target.h
@@ -0,0 +1,86 @@
+/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef LOC_TARGET_H
+#define LOC_TARGET_H
+#define TARGET_SET(gnss,ssc) ( (gnss<<1)|ssc )
+#define TARGET_DEFAULT       TARGET_SET(GNSS_MSM, HAS_SSC)
+#define TARGET_MDM           TARGET_SET(GNSS_MDM, HAS_SSC)
+#define TARGET_APQ_SA        TARGET_SET(GNSS_GSS, NO_SSC)
+#define TARGET_NO_GNSS       TARGET_SET(GNSS_NONE, NO_SSC)
+#define TARGET_MSM_NO_SSC    TARGET_SET(GNSS_MSM, NO_SSC)
+#define TARGET_QCA1530       TARGET_SET(GNSS_QCA1530, NO_SSC)
+#define TARGET_AUTO          TARGET_SET(GNSS_AUTO, NO_SSC)
+#define TARGET_UNKNOWN       TARGET_SET(GNSS_UNKNOWN, NO_SSC)
+#define getTargetGnssType(target)  (target>>1)
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+unsigned int loc_get_target(void);
+
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_target_baseband(char *baseband, int array_length);
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_platform_name(char *platform_name, int array_length);
+/*The character array passed to this function should have length
+  of atleast PROPERTY_VALUE_MAX*/
+void loc_get_auto_platform_name(char *platform_name, int array_length);
+
+/*Reads the property ro.lean to identify if this is a lean target
+  Returns:
+  0 if not a lean and mean target
+  1 if this is a lean and mean target*/
+int loc_identify_lean_target();
+
+/* Please remember to update 'target_name' in loc_log.cpp,
+   if do any changes to this enum. */
+typedef enum {
+    GNSS_NONE = 0,
+    GNSS_MSM,
+    GNSS_GSS,
+    GNSS_MDM,
+    GNSS_QCA1530,
+    GNSS_AUTO,
+    GNSS_UNKNOWN
+}GNSS_TARGET;
+
+typedef enum {
+    NO_SSC = 0,
+    HAS_SSC
+}SSC_TYPE;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*LOC_TARGET_H*/
diff --git a/sdm845/utils/loc_timer.h b/sdm845/utils/loc_timer.h
new file mode 100644
index 0000000..25fd179
--- /dev/null
+++ b/sdm845/utils/loc_timer.h
@@ -0,0 +1,73 @@
+/* Copyright (c) 2013,2015 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __LOC_DELAY_H__
+#define __LOC_DELAY_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#include <stddef.h>
+#include <platform_lib_includes.h>
+/*
+    user_data: client context pointer, passthrough. Originally received
+               from calling client when loc_timer_start() is called.
+    result:    0 if timer successfully timed out; else timer failed.
+*/
+typedef void (*loc_timer_callback)(void *user_data, int32_t result);
+
+
+/*
+    delay_msec:         timeout value for the timer.
+    cb_func:            callback function pointer, implemented by client.
+                        Can not be NULL.
+    user_data:          client context pointer, passthrough.  Will be
+                        returned when loc_timer_callback() is called.
+    wakeOnExpire:       true if to wake up CPU (if sleeping) upon timer
+                                expiration and notify the client.
+                        false if to wait until next time CPU wakes up (if
+                                 sleeping) and then notify the client.
+    Returns the handle, which can be used to stop the timer
+                        NULL, if timer start fails (e.g. if cb_func is NULL).
+*/
+void* loc_timer_start(uint64_t delay_msec,
+                      loc_timer_callback cb_func,
+                      void *user_data,
+                      bool wake_on_expire=false);
+
+/*
+    handle becomes invalid upon the return of the callback
+*/
+void loc_timer_stop(void*& handle);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif //__LOC_DELAY_H__
diff --git a/sdm845/utils/log_util.h b/sdm845/utils/log_util.h
new file mode 100644
index 0000000..7eb338a
--- /dev/null
+++ b/sdm845/utils/log_util.h
@@ -0,0 +1,173 @@
+/* Copyright (c) 2011-2014 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __LOG_UTIL_H__
+#define __LOG_UTIL_H__
+
+#ifndef USE_GLIB
+#include <utils/Log.h>
+#endif /* USE_GLIB */
+
+#ifdef USE_GLIB
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifndef LOG_TAG
+#define LOG_TAG "GPS_UTILS"
+
+#endif  // LOG_TAG
+
+#endif /* USE_GLIB */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/*=============================================================================
+ *
+ *                         LOC LOGGER TYPE DECLARATION
+ *
+ *============================================================================*/
+/* LOC LOGGER */
+typedef struct loc_logger_s
+{
+  unsigned long  DEBUG_LEVEL;
+  unsigned long  TIMESTAMP;
+} loc_logger_s_type;
+
+/*=============================================================================
+ *
+ *                               EXTERNAL DATA
+ *
+ *============================================================================*/
+extern loc_logger_s_type loc_logger;
+
+// Logging Improvements
+extern const char *loc_logger_boolStr[];
+
+extern const char *boolStr[];
+extern const char VOID_RET[];
+extern const char FROM_AFW[];
+extern const char TO_MODEM[];
+extern const char FROM_MODEM[];
+extern const char TO_AFW[];
+extern const char EXIT_TAG[];
+extern const char ENTRY_TAG[];
+extern const char EXIT_ERROR_TAG[];
+
+/*=============================================================================
+ *
+ *                        MODULE EXPORTED FUNCTIONS
+ *
+ *============================================================================*/
+extern void loc_logger_init(unsigned long debug, unsigned long timestamp);
+extern char* get_timestamp(char* str, unsigned long buf_size);
+
+#ifndef DEBUG_DMN_LOC_API
+
+/* LOGGING MACROS */
+/*loc_logger.DEBUG_LEVEL is initialized to 0xff in loc_cfg.cpp
+  if that value remains unchanged, it means gps.conf did not
+  provide a value and we default to the initial value to use
+  Android's logging levels*/
+#define IF_LOC_LOGE if((loc_logger.DEBUG_LEVEL >= 1) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGW if((loc_logger.DEBUG_LEVEL >= 2) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGI if((loc_logger.DEBUG_LEVEL >= 3) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGD if((loc_logger.DEBUG_LEVEL >= 4) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGV if((loc_logger.DEBUG_LEVEL >= 5) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define LOC_LOGE(...) IF_LOC_LOGE { ALOGE(__VA_ARGS__); }
+#define LOC_LOGW(...) IF_LOC_LOGW { ALOGW(__VA_ARGS__); }
+#define LOC_LOGI(...) IF_LOC_LOGI { ALOGI(__VA_ARGS__); }
+#define LOC_LOGD(...) IF_LOC_LOGD { ALOGD(__VA_ARGS__); }
+#define LOC_LOGV(...) IF_LOC_LOGV { ALOGV(__VA_ARGS__); }
+
+#else /* DEBUG_DMN_LOC_API */
+
+#define LOC_LOGE(...) ALOGE(__VA_ARGS__)
+#define LOC_LOGW(...) ALOGW(__VA_ARGS__)
+#define LOC_LOGI(...) ALOGI(__VA_ARGS__)
+#define LOC_LOGD(...) ALOGD(__VA_ARGS__)
+#define LOC_LOGV(...) ALOGV(__VA_ARGS__)
+
+#endif /* DEBUG_DMN_LOC_API */
+
+/*=============================================================================
+ *
+ *                          LOGGING IMPROVEMENT MACROS
+ *
+ *============================================================================*/
+#define LOG_(LOC_LOG, ID, WHAT, SPEC, VAL)                                    \
+    do {                                                                      \
+        if (loc_logger.TIMESTAMP) {                                           \
+            char ts[32];                                                      \
+            LOC_LOG("[%s] %s %s line %d " #SPEC,                              \
+                     get_timestamp(ts, sizeof(ts)), ID, WHAT, __LINE__, VAL); \
+        } else {                                                              \
+            LOC_LOG("%s %s line %d " #SPEC,                                   \
+                     ID, WHAT, __LINE__, VAL);                                \
+        }                                                                     \
+    } while(0)
+
+#define LOC_LOG_HEAD(fmt) "%s:%d] " fmt
+#define LOC_LOGv(fmt,...) LOC_LOGV(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGw(fmt,...) LOC_LOGW(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGd(fmt,...) LOC_LOGD(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGe(fmt,...) LOC_LOGE(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+
+#define LOG_I(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGI, ID, WHAT, SPEC, VAL)
+#define LOG_V(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGV, ID, WHAT, SPEC, VAL)
+#define LOG_E(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGE, ID, WHAT, SPEC, VAL)
+
+#define ENTRY_LOG() LOG_V(ENTRY_TAG, __FUNCTION__, %s, "")
+#define EXIT_LOG(SPEC, VAL) LOG_V(EXIT_TAG, __FUNCTION__, SPEC, VAL)
+#define EXIT_LOG_WITH_ERROR(SPEC, VAL)                       \
+    if (VAL != 0) {                                          \
+        LOG_E(EXIT_ERROR_TAG, __FUNCTION__, SPEC, VAL);          \
+    } else {                                                 \
+        LOG_V(EXIT_TAG, __FUNCTION__, SPEC, VAL);                \
+    }
+
+
+// Used for logging callflow from Android Framework
+#define ENTRY_LOG_CALLFLOW() LOG_I(FROM_AFW, __FUNCTION__, %s, "")
+// Used for logging callflow to Modem
+#define EXIT_LOG_CALLFLOW(SPEC, VAL) LOG_I(TO_MODEM, __FUNCTION__, SPEC, VAL)
+// Used for logging callflow from Modem(TO_MODEM, __FUNCTION__, %s, "")
+#define MODEM_LOG_CALLFLOW(SPEC, VAL) LOG_I(FROM_MODEM, __FUNCTION__, SPEC, VAL)
+// Used for logging callflow to Android Framework
+#define CALLBACK_LOG_CALLFLOW(CB, SPEC, VAL) LOG_I(TO_AFW, CB, SPEC, VAL)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __LOG_UTIL_H__
diff --git a/sdm845/utils/msg_q.c b/sdm845/utils/msg_q.c
new file mode 100644
index 0000000..10c4e48
--- /dev/null
+++ b/sdm845/utils/msg_q.c
@@ -0,0 +1,333 @@
+/* Copyright (c) 2011-2012, 2014, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "msg_q.h"
+
+#define LOG_TAG "LocSvc_utils_q"
+#include <platform_lib_includes.h>
+#include "linked_list.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+typedef struct msg_q {
+   void* msg_list;                  /* Linked list to store information */
+   pthread_cond_t  list_cond;       /* Condition variable for waiting on msg queue */
+   pthread_mutex_t list_mutex;      /* Mutex for exclusive access to message queue */
+   int unblocked;                   /* Has this message queue been unblocked? */
+} msg_q;
+
+/*===========================================================================
+FUNCTION    convert_linked_list_err_type
+
+DESCRIPTION
+   Converts from one set of enum values to another.
+
+   linked_list_val: Value to convert to msg_q_enum_type
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Corresponding linked_list_enum_type in msg_q_enum_type
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static msq_q_err_type convert_linked_list_err_type(linked_list_err_type linked_list_val)
+{
+   switch( linked_list_val )
+   {
+   case eLINKED_LIST_SUCCESS:
+      return eMSG_Q_SUCCESS;
+   case eLINKED_LIST_INVALID_PARAMETER:
+      return eMSG_Q_INVALID_PARAMETER;
+   case eLINKED_LIST_INVALID_HANDLE:
+      return eMSG_Q_INVALID_HANDLE;
+   case eLINKED_LIST_UNAVAILABLE_RESOURCE:
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   case eLINKED_LIST_INSUFFICIENT_BUFFER:
+      return eMSG_Q_INSUFFICIENT_BUFFER;
+
+   case eLINKED_LIST_FAILURE_GENERAL:
+   default:
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+}
+
+/* ----------------------- END INTERNAL FUNCTIONS ---------------------------------------- */
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_init
+
+  ===========================================================================*/
+msq_q_err_type msg_q_init(void** msg_q_data)
+{
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* tmp_msg_q;
+   tmp_msg_q = (msg_q*)calloc(1, sizeof(msg_q));
+   if( tmp_msg_q == NULL )
+   {
+      LOC_LOGE("%s: Unable to allocate space for message queue!\n", __FUNCTION__);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( linked_list_init(&tmp_msg_q->msg_list) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize storage list!\n", __FUNCTION__);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( pthread_mutex_init(&tmp_msg_q->list_mutex, NULL) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize list mutex!\n", __FUNCTION__);
+      linked_list_destroy(&tmp_msg_q->msg_list);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   if( pthread_cond_init(&tmp_msg_q->list_cond, NULL) != 0 )
+   {
+      LOC_LOGE("%s: Unable to initialize msg q cond var!\n", __FUNCTION__);
+      linked_list_destroy(&tmp_msg_q->msg_list);
+      pthread_mutex_destroy(&tmp_msg_q->list_mutex);
+      free(tmp_msg_q);
+      return eMSG_Q_FAILURE_GENERAL;
+   }
+
+   tmp_msg_q->unblocked = 0;
+
+   *msg_q_data = tmp_msg_q;
+
+   return eMSG_Q_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_init2
+
+  ===========================================================================*/
+const void* msg_q_init2()
+{
+  void* q = NULL;
+  if (eMSG_Q_SUCCESS != msg_q_init(&q)) {
+    q = NULL;
+  }
+  return q;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_destroy
+
+  ===========================================================================*/
+msq_q_err_type msg_q_destroy(void** msg_q_data)
+{
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)*msg_q_data;
+
+   linked_list_destroy(&p_msg_q->msg_list);
+   pthread_mutex_destroy(&p_msg_q->list_mutex);
+   pthread_cond_destroy(&p_msg_q->list_cond);
+
+   p_msg_q->unblocked = 0;
+
+   free(*msg_q_data);
+   *msg_q_data = NULL;
+
+   return eMSG_Q_SUCCESS;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_snd
+
+  ===========================================================================*/
+msq_q_err_type msg_q_snd(void* msg_q_data, void* msg_obj, void (*dealloc)(void*))
+{
+   msq_q_err_type rv;
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+   if( msg_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_obj parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+   LOC_LOGV("%s: Sending message with handle = 0x%08X\n", __FUNCTION__, msg_obj);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   rv = convert_linked_list_err_type(linked_list_add(p_msg_q->msg_list, msg_obj, dealloc));
+
+   /* Show data is in the message queue. */
+   pthread_cond_signal(&p_msg_q->list_cond);
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGV("%s: Finished Sending message with handle = 0x%08X\n", __FUNCTION__, msg_obj);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_rcv
+
+  ===========================================================================*/
+msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj)
+{
+   msq_q_err_type rv;
+   if( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   if( msg_obj == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_obj parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_PARAMETER;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   /* Wait for data in the message queue */
+   while( linked_list_empty(p_msg_q->msg_list) && !p_msg_q->unblocked )
+   {
+      pthread_cond_wait(&p_msg_q->list_cond, &p_msg_q->list_mutex);
+   }
+
+   rv = convert_linked_list_err_type(linked_list_remove(p_msg_q->msg_list, msg_obj));
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGV("%s: Received message 0x%08X rv = %d\n", __FUNCTION__, *msg_obj, rv);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_flush
+
+  ===========================================================================*/
+msq_q_err_type msg_q_flush(void* msg_q_data)
+{
+   msq_q_err_type rv;
+   if ( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+
+   LOC_LOGD("%s: Flushing Message Queue\n", __FUNCTION__);
+
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   /* Remove all elements from the list */
+   rv = convert_linked_list_err_type(linked_list_flush(p_msg_q->msg_list));
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Message Queue flushed\n", __FUNCTION__);
+
+   return rv;
+}
+
+/*===========================================================================
+
+  FUNCTION:   msg_q_unblock
+
+  ===========================================================================*/
+msq_q_err_type msg_q_unblock(void* msg_q_data)
+{
+   if ( msg_q_data == NULL )
+   {
+      LOC_LOGE("%s: Invalid msg_q_data parameter!\n", __FUNCTION__);
+      return eMSG_Q_INVALID_HANDLE;
+   }
+
+   msg_q* p_msg_q = (msg_q*)msg_q_data;
+   pthread_mutex_lock(&p_msg_q->list_mutex);
+
+   if( p_msg_q->unblocked )
+   {
+      LOC_LOGE("%s: Message queue has been unblocked.\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eMSG_Q_UNAVAILABLE_RESOURCE;
+   }
+
+   LOC_LOGD("%s: Unblocking Message Queue\n", __FUNCTION__);
+   /* Unblocking message queue */
+   p_msg_q->unblocked = 1;
+
+   /* Allow all the waiters to wake up */
+   pthread_cond_broadcast(&p_msg_q->list_cond);
+
+   pthread_mutex_unlock(&p_msg_q->list_mutex);
+
+   LOC_LOGD("%s: Message Queue unblocked\n", __FUNCTION__);
+
+   return eMSG_Q_SUCCESS;
+}
diff --git a/sdm845/utils/msg_q.h b/sdm845/utils/msg_q.h
new file mode 100644
index 0000000..453b8ce
--- /dev/null
+++ b/sdm845/utils/msg_q.h
@@ -0,0 +1,207 @@
+/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MSG_Q_H__
+#define __MSG_Q_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include <stdlib.h>
+
+/** Linked List Return Codes */
+typedef enum
+{
+  eMSG_Q_SUCCESS                             = 0,
+     /**< Request was successful. */
+  eMSG_Q_FAILURE_GENERAL                     = -1,
+     /**< Failed because of a general failure. */
+  eMSG_Q_INVALID_PARAMETER                   = -2,
+     /**< Failed because the request contained invalid parameters. */
+  eMSG_Q_INVALID_HANDLE                      = -3,
+     /**< Failed because an invalid handle was specified. */
+  eMSG_Q_UNAVAILABLE_RESOURCE                = -4,
+     /**< Failed because an there were not enough resources. */
+  eMSG_Q_INSUFFICIENT_BUFFER                 = -5,
+     /**< Failed because an the supplied buffer was too small. */
+}msq_q_err_type;
+
+/*===========================================================================
+FUNCTION    msg_q_init
+
+DESCRIPTION
+   Initializes internal structures for message queue.
+
+   msg_q_data: pointer to an opaque Q handle to be returned; NULL if fails
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_init(void** msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_init2
+
+DESCRIPTION
+   Initializes internal structures for message queue.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   opaque handle to the Q created; NULL if create fails
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+const void* msg_q_init2();
+
+/*===========================================================================
+FUNCTION    msg_q_destroy
+
+DESCRIPTION
+   Releases internal structures for message queue.
+
+   msg_q_data: State of message queue to be released.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_destroy(void** msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_snd
+
+DESCRIPTION
+   Sends data to the message queue. The passed in data pointer
+   is not modified or freed. Passed in msg_obj is expected to live throughout
+   the use of the msg_q (i.e. data is not allocated internally)
+
+   msg_q_data: Message Queue to add the element to.
+   msgp:       Pointer to data to add into message queue.
+   dealloc:    Function used to deallocate memory for this element. Pass NULL
+               if you do not want data deallocated during a flush operation
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_snd(void* msg_q_data, void* msg_obj, void (*dealloc)(void*));
+
+/*===========================================================================
+FUNCTION    msg_q_rcv
+
+DESCRIPTION
+   Retrieves data from the message queue. msg_obj is the oldest message received
+   and pointer is simply removed from message queue.
+
+   msg_q_data: Message Queue to copy data from into msgp.
+   msg_obj:    Pointer to space to copy msg_q contents to.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj);
+
+/*===========================================================================
+FUNCTION    msg_q_flush
+
+DESCRIPTION
+   Function removes all elements from the message queue.
+
+   msg_q_data: Message Queue to remove elements from.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_flush(void* msg_q_data);
+
+/*===========================================================================
+FUNCTION    msg_q_unblock
+
+DESCRIPTION
+   This function will stop use of the message queue. All waiters will wake up
+   and likely receive nothing from the queue resulting in a negative return
+   value. The message queue can no longer be used until it is destroyed
+   and initialized again after calling this function.
+
+   msg_q_data: Message queue to unblock.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   Look at error codes above.
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+msq_q_err_type msg_q_unblock(void* msg_q_data);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __MSG_Q_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/Android.mk b/sdm845/utils/platform_lib_abstractions/Android.mk
new file mode 100644
index 0000000..b923a4c
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/Android.mk
@@ -0,0 +1,5 @@
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+include $(call all-subdir-makefiles)
+
+endif
diff --git a/sdm845/utils/platform_lib_abstractions/elapsed_millis_since_boot.cpp b/sdm845/utils/platform_lib_abstractions/elapsed_millis_since_boot.cpp
new file mode 100644
index 0000000..e8cb93a
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/elapsed_millis_since_boot.cpp
@@ -0,0 +1,46 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <sys/time.h>
+#include "platform_lib_time.h"
+
+int64_t systemTime(int clock)
+{
+    struct timeval t;
+    t.tv_sec = t.tv_usec = 0;
+    gettimeofday(&t, NULL);
+    return t.tv_sec*1000000LL + t.tv_usec;
+}
+
+
+int64_t elapsedMillisSinceBoot()
+{
+    int64_t t_us = systemTime(0);
+    return (int64_t) t_us / 1000LL;
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/Android.mk b/sdm845/utils/platform_lib_abstractions/loc_pla/Android.mk
new file mode 100644
index 0000000..b923a4c
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/Android.mk
@@ -0,0 +1,5 @@
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+include $(call all-subdir-makefiles)
+
+endif
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/Makefile.am b/sdm845/utils/platform_lib_abstractions/loc_pla/Makefile.am
new file mode 100644
index 0000000..8996763
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/Makefile.am
@@ -0,0 +1,10 @@
+# Makefile.am for gps loc-pla
+#
+
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = src
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = loc-pla.pc
+EXTRA_DIST = $(pkgconfig_DATA)
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/configure.ac b/sdm845/utils/platform_lib_abstractions/loc_pla/configure.ac
new file mode 100644
index 0000000..a8b892b
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/configure.ac
@@ -0,0 +1,61 @@
+# configure.ac -- Autoconf script for gps loc-pla
+#
+# Process this file with autoconf to produce a configure script
+
+# Requires autoconf tool later than 2.61
+AC_PREREQ(2.61)
+# Initialize the gps loc-pla package version 1.0.0
+AC_INIT([loc-pla],1.0.0)
+# Does not strictly follow GNU Coding standards
+AM_INIT_AUTOMAKE([foreign])
+# Disables auto rebuilding of configure, Makefile.ins
+AM_MAINTAINER_MODE
+# Verifies the --srcdir is correct by checking for the path
+AC_CONFIG_SRCDIR([include/platform_lib_includes.h])
+# defines some macros variable to be included by source
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+# Checks for libraries.
+PKG_CHECK_MODULES([LOCSTUB], [loc-stub])
+AC_SUBST([LOCSTUB_CFLAGS])
+AC_SUBST([LOCSTUB_LIBS])
+
+AC_ARG_WITH([glib],
+      AC_HELP_STRING([--with-glib],
+         [enable glib, building HLOS systems which use glib]))
+
+if (test "x${with_glib}" = "xyes"); then
+        AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
+        PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GThread >= 2.16 is required))
+        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GLib >= 2.16 is required))
+        GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
+        GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
+
+        AC_SUBST(GLIB_CFLAGS)
+        AC_SUBST(GLIB_LIBS)
+fi
+
+AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
+
+AC_CONFIG_FILES([ \
+        Makefile \
+        src/Makefile \
+        loc-pla.pc \
+        ])
+
+AC_OUTPUT
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_android_runtime.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_android_runtime.h
new file mode 100644
index 0000000..9a954f0
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_android_runtime.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_ANDROID_RUNTIME_H__
+#define __PLATFORM_LIB_ANDROID_RUNTIME_H__
+
+#include <pthread.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+pthread_t platform_lib_abstraction_createJavaThread(const char* name, void (*start)(void *), void* arg);
+#define LOC_EXT_CREATE_THREAD_CB_PLATFORM_LIB_ABSTRACTION platform_lib_abstraction_createJavaThread
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /*__PLATFORM_LIB_ANDROID_RUNTIME_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_gettid.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_gettid.h
new file mode 100644
index 0000000..340c3c5
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_gettid.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_GETTID_H__
+#define __PLATFORM_LIB_GETTID_H__
+
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef USE_GLIB
+const char* getprogname();
+#endif /* USE_GLIB */
+
+pid_t platform_lib_abstraction_gettid();
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __PLATFORM_LIB_GETTID_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_includes.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_includes.h
new file mode 100644
index 0000000..47c37df
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_includes.h
@@ -0,0 +1,40 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_INCLUDES_H__
+#define __PLATFORM_LIB_INCLUDES_H__
+
+#include "platform_lib_android_runtime.h"
+#include "platform_lib_gettid.h"
+#include "platform_lib_log_util.h"
+#include "platform_lib_macros.h"
+#include "platform_lib_property_service.h"
+#include "platform_lib_sched_policy.h"
+#include "platform_lib_time.h"
+
+#endif /* __PLATFORM_LIB_INCLUDES_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_log_util.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_log_util.h
new file mode 100644
index 0000000..26d3c29
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_log_util.h
@@ -0,0 +1,174 @@
+/* Copyright (c) 2011-2014 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_LOG_UTIL_H__
+#define __PLATFORM_LIB_LOG_UTIL_H__
+
+#include "platform_lib_macros.h"
+
+#ifndef USE_GLIB
+#include <log_util.h>
+#else
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#ifndef LOG_TAG
+#define LOG_TAG "GPS_UTILS"
+#endif /* LOG_TAG */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/*=============================================================================
+ *
+ *                         LOC LOGGER TYPE DECLARATION
+ *
+ *============================================================================*/
+/* LOC LOGGER */
+typedef struct loc_logger_s
+{
+  unsigned long  DEBUG_LEVEL;
+  unsigned long  TIMESTAMP;
+} loc_logger_s_type;
+
+/*=============================================================================
+ *
+ *                               EXTERNAL DATA
+ *
+ *============================================================================*/
+extern loc_logger_s_type loc_logger;
+
+// Logging Improvements
+extern const char *loc_logger_boolStr[];
+
+extern const char *boolStr[];
+extern const char VOID_RET[];
+extern const char FROM_AFW[];
+extern const char TO_MODEM[];
+extern const char FROM_MODEM[];
+extern const char TO_AFW[];
+extern const char EXIT_TAG[];
+extern const char ENTRY_TAG[];
+extern const char EXIT_ERROR_TAG[];
+
+/*=============================================================================
+ *
+ *                        MODULE EXPORTED FUNCTIONS
+ *
+ *============================================================================*/
+void loc_logger_init(unsigned long debug, unsigned long timestamp);
+char* get_timestamp(char* str, unsigned long buf_size);
+
+#ifndef DEBUG_DMN_LOC_API
+
+/* LOGGING MACROS */
+/*loc_logger.DEBUG_LEVEL is initialized to 0xff in loc_cfg.cpp
+  if that value remains unchanged, it means gps.conf did not
+  provide a value and we default to the initial value to use
+  Android's logging levels*/
+#define IF_LOC_LOGE if((loc_logger.DEBUG_LEVEL >= 1) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGW if((loc_logger.DEBUG_LEVEL >= 2) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGI if((loc_logger.DEBUG_LEVEL >= 3) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGD if((loc_logger.DEBUG_LEVEL >= 4) && (loc_logger.DEBUG_LEVEL <= 5))
+#define IF_LOC_LOGV if((loc_logger.DEBUG_LEVEL >= 5) && (loc_logger.DEBUG_LEVEL <= 5))
+
+#define LOC_LOGE(...) IF_LOC_LOGE { ALOGE(__VA_ARGS__); }
+#define LOC_LOGW(...) IF_LOC_LOGW { ALOGW(__VA_ARGS__); }
+#define LOC_LOGI(...) IF_LOC_LOGI { ALOGI(__VA_ARGS__); }
+#define LOC_LOGD(...) IF_LOC_LOGD { ALOGD(__VA_ARGS__); }
+#define LOC_LOGV(...) IF_LOC_LOGV { ALOGV(__VA_ARGS__); }
+
+#else /* DEBUG_DMN_LOC_API */
+
+#define LOC_LOGE(...) ALOGE(__VA_ARGS__)
+#define LOC_LOGW(...) ALOGW(__VA_ARGS__)
+#define LOC_LOGI(...) ALOGI(__VA_ARGS__)
+#define LOC_LOGD(...) ALOGD(__VA_ARGS__)
+#define LOC_LOGV(...) ALOGV(__VA_ARGS__)
+
+#endif /* DEBUG_DMN_LOC_API */
+
+/*=============================================================================
+ *
+ *                          LOGGING IMPROVEMENT MACROS
+ *
+ *============================================================================*/
+#define LOG_(LOC_LOG, ID, WHAT, SPEC, VAL)                                    \
+    do {                                                                      \
+        if (loc_logger.TIMESTAMP) {                                           \
+            char ts[32];                                                      \
+            LOC_LOG("[%s] %s %s line %d " #SPEC,                              \
+                     get_timestamp(ts, sizeof(ts)), ID, WHAT, __LINE__, VAL); \
+        } else {                                                              \
+            LOC_LOG("%s %s line %d " #SPEC,                                   \
+                     ID, WHAT, __LINE__, VAL);                                \
+        }                                                                     \
+    } while(0)
+
+#define LOC_LOG_HEAD(fmt) "%s:%d] " fmt
+#define LOC_LOGv(fmt,...) LOC_LOGV(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGw(fmt,...) LOC_LOGW(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGd(fmt,...) LOC_LOGD(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define LOC_LOGe(fmt,...) LOC_LOGE(LOC_LOG_HEAD(fmt), __FUNCTION__, __LINE__, ##__VA_ARGS__)
+
+#define LOG_I(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGI, ID, WHAT, SPEC, VAL)
+#define LOG_V(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGV, ID, WHAT, SPEC, VAL)
+#define LOG_E(ID, WHAT, SPEC, VAL) LOG_(LOC_LOGE, ID, WHAT, SPEC, VAL)
+
+#define ENTRY_LOG() LOG_V(ENTRY_TAG, __FUNCTION__, %s, "")
+#define EXIT_LOG(SPEC, VAL) LOG_V(EXIT_TAG, __FUNCTION__, SPEC, VAL)
+#define EXIT_LOG_WITH_ERROR(SPEC, VAL)                       \
+    if (VAL != 0) {                                          \
+        LOG_E(EXIT_ERROR_TAG, __FUNCTION__, SPEC, VAL);          \
+    } else {                                                 \
+        LOG_V(EXIT_TAG, __FUNCTION__, SPEC, VAL);                \
+    }
+
+
+// Used for logging callflow from Android Framework
+#define ENTRY_LOG_CALLFLOW() LOG_I(FROM_AFW, __FUNCTION__, %s, "")
+// Used for logging callflow to Modem
+#define EXIT_LOG_CALLFLOW(SPEC, VAL) LOG_I(TO_MODEM, __FUNCTION__, SPEC, VAL)
+// Used for logging callflow from Modem(TO_MODEM, __FUNCTION__, %s, "")
+#define MODEM_LOG_CALLFLOW(SPEC, VAL) LOG_I(FROM_MODEM, __FUNCTION__, SPEC, VAL)
+// Used for logging callflow to Android Framework
+#define CALLBACK_LOG_CALLFLOW(CB, SPEC, VAL) LOG_I(TO_AFW, CB, SPEC, VAL)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USE_GLIB */
+
+#endif /* __PLATFORM_LIB_LOG_UTIL_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_macros.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_macros.h
new file mode 100644
index 0000000..d0795eb
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_macros.h
@@ -0,0 +1,85 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_MACROS_H__
+#define __PLATFORM_LIB_MACROS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef USE_GLIB
+#include <sys/time.h>
+#include <string.h>
+#include <stdlib.h>
+#ifndef OFF_TARGET
+#include <glib.h>
+#define strlcat g_strlcat
+#define strlcpy g_strlcpy
+#else
+#define strlcat strncat
+#define strlcpy strncpy
+#endif
+
+#define TS_PRINTF(format, x...)                                \
+{                                                              \
+  struct timeval tv;                                           \
+  struct timezone tz;                                          \
+  int hh, mm, ss;                                              \
+  gettimeofday(&tv, &tz);                                      \
+  hh = tv.tv_sec/3600%24;                                      \
+  mm = (tv.tv_sec%3600)/60;                                    \
+  ss = tv.tv_sec%60;                                           \
+  fprintf(stdout,"%02d:%02d:%02d.%06ld]" format "\n", hh, mm, ss, tv.tv_usec,##x);    \
+}
+
+#define ALOGE(format, x...) TS_PRINTF("E/%s (%d): " format , LOG_TAG, getpid(), ##x)
+#define ALOGW(format, x...) TS_PRINTF("W/%s (%d): " format , LOG_TAG, getpid(), ##x)
+#define ALOGI(format, x...) TS_PRINTF("I/%s (%d): " format , LOG_TAG, getpid(), ##x)
+#define ALOGD(format, x...) TS_PRINTF("D/%s (%d): " format , LOG_TAG, getpid(), ##x)
+#define ALOGV(format, x...) TS_PRINTF("V/%s (%d): " format , LOG_TAG, getpid(), ##x)
+
+#endif /* USE_GLIB */
+
+
+// Below are the location conf file paths
+extern const char LOC_PATH_GPS_CONF[];
+extern const char LOC_PATH_IZAT_CONF[];
+extern const char LOC_PATH_FLP_CONF[];
+extern const char LOC_PATH_LOWI_CONF[];
+extern const char LOC_PATH_SAP_CONF[];
+extern const char LOC_PATH_APDR_CONF[];
+extern const char LOC_PATH_XTWIFI_CONF[];
+extern const char LOC_PATH_QUIPC_CONF[];
+
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus */
+
+#endif /* __PLATFORM_LIB_MACROS_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_property_service.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_property_service.h
new file mode 100644
index 0000000..ed2041f
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_property_service.h
@@ -0,0 +1,44 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_PROPERTY_SERVICE_H__
+#define __PLATFORM_LIB_PROPERTY_SERVICE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifndef PROPERTY_VALUE_MAX
+#define PROPERTY_VALUE_MAX  92
+#endif
+int platform_lib_abstraction_property_get(const char *key, char *value, const char *default_value);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __PLATFORM_LIB_PROPERTY_SERVICE_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_sched_policy.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_sched_policy.h
new file mode 100644
index 0000000..d10f151
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_sched_policy.h
@@ -0,0 +1,46 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_SCHED_POLICY_H__
+#define __PLATFORM_LIB_SCHED_POLICY_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+typedef enum {
+    PLA_SP_BACKGROUND = 0,
+    PLA_SP_FOREGROUND = 1,
+} PLASchedPolicy;
+
+int platform_lib_abstraction_set_sched_policy(int tid, PLASchedPolicy policy);
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __PLATFORM_LIB_SCHED_POLICY_H__ */
+
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_time.h b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_time.h
new file mode 100644
index 0000000..ae25ae6
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/include/platform_lib_time.h
@@ -0,0 +1,36 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_LIB_TIME_H__
+#define __PLATFORM_LIB_TIME_H__
+
+#include <stdint.h>
+int64_t platform_lib_abstraction_elapsed_millis_since_boot();
+int64_t platform_lib_abstraction_elapsed_micros_since_boot();
+
+#endif /* __PLATFORM_LIB_TIME_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/loc-pla.pc.in b/sdm845/utils/platform_lib_abstractions/loc_pla/loc-pla.pc.in
new file mode 100644
index 0000000..1aad2f4
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/loc-pla.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: loc-pla
+Description: QTI GPS Location Platform Library Abstractions
+Version: @VERSION@
+Libs: -L${libdir} -lloc_pla
+Cflags: -I${includedir}/loc-pla
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/Android.mk b/sdm845/utils/platform_lib_abstractions/loc_pla/src/Android.mk
new file mode 100644
index 0000000..0bcddcb
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/Android.mk
@@ -0,0 +1,56 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+#Compile this library only for builds with the latest modem image
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+## Libs
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    liblog \
+    libloc_stub \
+    libandroid_runtime
+
+LOCAL_SRC_FILES += \
+        platform_lib_android_runtime.cpp \
+        platform_lib_gettid.cpp \
+        platform_lib_log_util.cpp \
+        platform_lib_property_service.cpp \
+        platform_lib_sched_policy.cpp \
+        platform_lib_time.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+     -D_ANDROID_ \
+     -std=c++11
+
+## Includes
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/../include \
+    $(TARGET_OUT_HEADERS)/gps.utils \
+    $(TARGET_OUT_HEADERS)/libloc_stub
+
+LOCAL_COPY_HEADERS_TO:= libloc_pla/
+LOCAL_COPY_HEADERS:= \
+        ../include/platform_lib_android_runtime.h \
+        ../include/platform_lib_gettid.h \
+        ../include/platform_lib_includes.h \
+        ../include/platform_lib_log_util.h \
+        ../include/platform_lib_macros.h \
+        ../include/platform_lib_property_service.h \
+        ../include/platform_lib_sched_policy.h \
+        ../include/platform_lib_time.h
+
+LOCAL_MODULE := libloc_pla
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/Makefile.am b/sdm845/utils/platform_lib_abstractions/loc_pla/src/Makefile.am
new file mode 100644
index 0000000..d82aa55
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/Makefile.am
@@ -0,0 +1,41 @@
+AM_CFLAGS = \
+     $(LOCSTUB_CFLAGS) \
+     -I../include \
+     -D__func__=__PRETTY_FUNCTION__ \
+     -fno-short-enums
+
+h_sources = \
+    ../include/platform_lib_android_runtime.h \
+    ../include/platform_lib_gettid.h \
+    ../include/platform_lib_includes.h \
+    ../include/platform_lib_log_util.h \
+    ../include/platform_lib_macros.h \
+    ../include/platform_lib_property_service.h \
+    ../include/platform_lib_sched_policy.h \
+    ../include/platform_lib_time.h
+
+library_includedir = $(pkgincludedir)
+library_include_HEADERS = $(h_sources)
+
+libloc_pla_la_SOURCES = \
+    platform_lib_android_runtime.cpp \
+    platform_lib_gettid.cpp \
+    platform_lib_log_util.cpp \
+    platform_lib_property_service.cpp \
+    platform_lib_sched_policy.cpp \
+    platform_lib_time.cpp
+
+if USE_GLIB
+libloc_pla_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+libloc_pla_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
+libloc_pla_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libloc_pla_la_CFLAGS = $(AM_CFLAGS)
+libloc_pla_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
+libloc_pla_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+libloc_pla_la_LIBADD = -lstdc++ -ldl -llog $(LOCSTUB_LIBS)
+
+#Create and Install libraries
+lib_LTLIBRARIES = libloc_pla.la
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_android_runtime.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_android_runtime.cpp
new file mode 100644
index 0000000..090af13
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_android_runtime.cpp
@@ -0,0 +1,40 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "platform_lib_android_runtime.h"
+
+#ifdef USE_GLIB
+#include <loc_stub_android_runtime.h>
+#else
+#include <android_runtime/AndroidRuntime.h>
+#endif /* USE_GLIB */
+
+pthread_t platform_lib_abstraction_createJavaThread(const char* name, void (*start)(void *), void* arg)
+{
+    return (pthread_t)android::AndroidRuntime::createJavaThread(name, start, arg);
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_gettid.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_gettid.cpp
new file mode 100644
index 0000000..1b7aa32
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_gettid.cpp
@@ -0,0 +1,46 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "platform_lib_gettid.h"
+
+#ifdef USE_GLIB
+#include <loc_stub_gettid.h>
+
+#include <errno.h>
+const char* getprogname() {
+    return program_invocation_short_name;
+}
+
+#else
+#include <unistd.h>
+#endif /* USE_GLIB */
+
+pid_t platform_lib_abstraction_gettid()
+{
+    return gettid();
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_log_util.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_log_util.cpp
new file mode 100644
index 0000000..3cb51a3
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_log_util.cpp
@@ -0,0 +1,78 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "platform_lib_log_util.h"
+#include "platform_lib_macros.h"
+
+char * get_timestamp(char *str, unsigned long buf_size)
+{
+  struct timeval tv;
+  struct timezone tz;
+  int hh, mm, ss;
+  gettimeofday(&tv, &tz);
+  hh = tv.tv_sec/3600%24;
+  mm = (tv.tv_sec%3600)/60;
+  ss = tv.tv_sec%60;
+  snprintf(str, buf_size, "%02d:%02d:%02d.%06ld", hh, mm, ss, tv.tv_usec);
+  return str;
+}
+
+// Below are the location conf file paths
+#ifdef __ANDROID__
+
+#define LOC_PATH_GPS_CONF_STR      "/vendor/etc/gps.conf"
+#define LOC_PATH_IZAT_CONF_STR     "/vendor/etc/izat.conf"
+#define LOC_PATH_FLP_CONF_STR      "/vendor/etc/flp.conf"
+#define LOC_PATH_LOWI_CONF_STR     "/vendor/etc/lowi.conf"
+#define LOC_PATH_SAP_CONF_STR      "/vendor/etc/sap.conf"
+#define LOC_PATH_APDR_CONF_STR     "/vendor/etc/apdr.conf"
+#define LOC_PATH_XTWIFI_CONF_STR   "/vendor/etc/xtwifi.conf"
+#define LOC_PATH_QUIPC_CONF_STR    "/vendor/etc/quipc.conf"
+
+#else
+
+#define LOC_PATH_GPS_CONF_STR      "/etc/gps.conf"
+#define LOC_PATH_IZAT_CONF_STR     "/etc/izat.conf"
+#define LOC_PATH_FLP_CONF_STR      "/etc/flp.conf"
+#define LOC_PATH_LOWI_CONF_STR     "/etc/lowi.conf"
+#define LOC_PATH_SAP_CONF_STR      "/etc/sap.conf"
+#define LOC_PATH_APDR_CONF_STR     "/etc/apdr.conf"
+#define LOC_PATH_XTWIFI_CONF_STR   "/etc/xtwifi.conf"
+#define LOC_PATH_QUIPC_CONF_STR    "/etc/quipc.conf"
+
+#endif // __ANDROID__
+
+// Reference below arrays wherever needed to avoid duplicating
+// same conf path string over and again in location code.
+const char LOC_PATH_GPS_CONF[]    = LOC_PATH_GPS_CONF_STR;
+const char LOC_PATH_IZAT_CONF[]   = LOC_PATH_IZAT_CONF_STR;
+const char LOC_PATH_FLP_CONF[]    = LOC_PATH_FLP_CONF_STR;
+const char LOC_PATH_LOWI_CONF[]   = LOC_PATH_LOWI_CONF_STR;
+const char LOC_PATH_SAP_CONF[]    = LOC_PATH_SAP_CONF_STR;
+const char LOC_PATH_APDR_CONF[]   = LOC_PATH_APDR_CONF_STR;
+const char LOC_PATH_XTWIFI_CONF[] = LOC_PATH_XTWIFI_CONF_STR;
+const char LOC_PATH_QUIPC_CONF[]  = LOC_PATH_QUIPC_CONF_STR;
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_property_service.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_property_service.cpp
new file mode 100644
index 0000000..1cc63ab
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_property_service.cpp
@@ -0,0 +1,39 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "platform_lib_property_service.h"
+
+#ifdef USE_GLIB
+#include <loc_stub_property_service.h>
+#else
+#include <cutils/properties.h>
+#endif /* USE_GLIB */
+
+int platform_lib_abstraction_property_get(const char *key, char *value, const char *default_value)
+{
+    return property_get(key, value, default_value);
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_sched_policy.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_sched_policy.cpp
new file mode 100644
index 0000000..ba6b350
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_sched_policy.cpp
@@ -0,0 +1,41 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "platform_lib_sched_policy.h"
+
+#ifdef USE_GLIB
+#include <loc_stub_sched_policy.h>
+#else
+#include <cutils/sched_policy.h>
+#endif /* USE_GLIB */
+
+int platform_lib_abstraction_set_sched_policy(int tid, PLASchedPolicy policy)
+{
+    return set_sched_policy(tid, (SchedPolicy)policy);
+}
+
diff --git a/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_time.cpp b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_time.cpp
new file mode 100644
index 0000000..3dcd4d3
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_pla/src/platform_lib_time.cpp
@@ -0,0 +1,59 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "platform_lib_time.h"
+
+#ifdef USE_GLIB
+#include <loc_stub_time.h>
+#else
+#include <utils/SystemClock.h>
+#include <utils/Timers.h>
+
+#endif /* USE_GLIB */
+
+int64_t platform_lib_abstraction_elapsed_millis_since_boot()
+{
+#ifdef USE_GLIB
+
+    return elapsedMillisSinceBoot();
+
+#else
+
+    //return android::nanoseconds_to_microseconds(systemTime(SYSTEM_TIME_BOOTTIME))/1000;
+    return nanoseconds_to_microseconds(systemTime(SYSTEM_TIME_BOOTTIME))/1000;
+#endif
+}
+int64_t platform_lib_abstraction_elapsed_micros_since_boot()
+{
+#ifdef USE_GLIB
+    return elapsedMicrosSinceBoot();
+
+#else
+    //return android::nanoseconds_to_microseconds(systemTime(SYSTEM_TIME_BOOTTIME));
+    return nanoseconds_to_microseconds(systemTime(SYSTEM_TIME_BOOTTIME));
+#endif
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/Android.mk b/sdm845/utils/platform_lib_abstractions/loc_stub/Android.mk
new file mode 100644
index 0000000..b923a4c
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/Android.mk
@@ -0,0 +1,5 @@
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+include $(call all-subdir-makefiles)
+
+endif
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/Makefile.am b/sdm845/utils/platform_lib_abstractions/loc_stub/Makefile.am
new file mode 100644
index 0000000..d81e363
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/Makefile.am
@@ -0,0 +1,9 @@
+# Makefile.am for gps loc-stub
+
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = src
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = loc-stub.pc
+EXTRA_DIST = $(pkgconfig_DATA)
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/configure.ac b/sdm845/utils/platform_lib_abstractions/loc_stub/configure.ac
new file mode 100644
index 0000000..8900f04
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/configure.ac
@@ -0,0 +1,67 @@
+# configure.ac -- Autoconf script for gps loc-stub
+#
+# Process this file with autoconf to produce a configure script
+
+# Requires autoconf tool later than 2.61
+AC_PREREQ(2.61)
+# Initialize the gps loc-stub package version 1.0.0
+AC_INIT([loc-stub],1.0.0)
+# Does not strictly follow GNU Coding standards
+AM_INIT_AUTOMAKE([foreign])
+# Disables auto rebuilding of configure, Makefile.ins
+AM_MAINTAINER_MODE
+# Verifies the --srcdir is correct by checking for the path
+AC_CONFIG_SRCDIR([Makefile.am])
+# defines some macros variable to be included by source
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+# Checks for libraries.
+AC_ARG_WITH([hardware_include],
+                  AC_HELP_STRING([--with-hardware-include=@<:@dir@:>@],
+                                 [Specify the location of the hardware headers]),
+                                 [hardware_incdir=$withval],
+                                 with_hardware_include=no)
+
+if test "x$with_hardware_include" != "xno"; then
+       CPPFLAGS="${CPPFLAGS} -I${hardware_incdir}"
+fi
+
+AC_ARG_WITH([glib],
+      AC_HELP_STRING([--with-glib],
+         [enable glib, building HLOS systems which use glib]))
+
+if (test "x${with_glib}" = "xyes"); then
+        AC_DEFINE(ENABLE_USEGLIB, 1, [Define if HLOS systems uses glib])
+        PKG_CHECK_MODULES(GTHREAD, gthread-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GThread >= 2.16 is required))
+        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16, dummy=yes,
+                                AC_MSG_ERROR(GLib >= 2.16 is required))
+        GLIB_CFLAGS="$GLIB_CFLAGS $GTHREAD_CFLAGS"
+        GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
+
+        AC_SUBST(GLIB_CFLAGS)
+        AC_SUBST(GLIB_LIBS)
+fi
+
+AM_CONDITIONAL(USE_GLIB, test "x${with_glib}" = "xyes")
+
+AC_CONFIG_FILES([ \
+        Makefile \
+        src/Makefile \
+        loc-stub.pc
+        ])
+
+AC_OUTPUT
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_android_runtime.h b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_android_runtime.h
new file mode 100644
index 0000000..c8764ee
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_android_runtime.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOC_STUB_ANDROID_RUNTIME_H__
+#define __LOC_STUB_ANDROID_RUNTIME_H__
+
+#include <pthread.h>
+
+namespace android {
+
+class AndroidRuntime
+{
+public:
+    /** create a new thread that is visible from Java */
+    static pthread_t createJavaThread(const char* name, void (*start)(void *),
+        void* arg);
+};
+
+}
+#endif /* __LOC_STUB_ANDROID_RUNTIME_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_gettid.h b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_gettid.h
new file mode 100644
index 0000000..677bc81
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_gettid.h
@@ -0,0 +1,44 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOC_STUB_GETTID_H__
+#define __LOC_STUB_GETTID_H__
+
+#include <pthread.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+pid_t gettid(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LOC_STUB_GETTID_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_property_service.h b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_property_service.h
new file mode 100644
index 0000000..3677cdf
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_property_service.h
@@ -0,0 +1,42 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOC_STUB_PROPERTY_SERVICE_H__
+#define __LOC_STUB_PROPERTY_SERVICE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int property_get(const char *key, char *value, const char *default_value);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __LOC_STUB_PROPERTY_SERVICE_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_sched_policy.h b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_sched_policy.h
new file mode 100644
index 0000000..a42b117
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_sched_policy.h
@@ -0,0 +1,64 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOC_STUB_SCHED_POLICY_H__
+#define __LOC_STUB_SCHED_POLICY_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    SP_BACKGROUND = 0,
+    SP_FOREGROUND = 1,
+} SchedPolicy;
+
+/*===========================================================================
+FUNCTION set_sched_policy
+
+DESCRIPTION
+   Local copy of this function which bypasses android set_sched_policy
+
+DEPENDENCIES
+   None
+
+RETURN VALUE
+   0
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+int set_sched_policy(int tid, SchedPolicy policy);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __LOC_STUB_SCHED_POLICY_H__ */
+
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_time.h b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_time.h
new file mode 100644
index 0000000..f00a49b
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/include/loc_stub_time.h
@@ -0,0 +1,46 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOC_STUB_TIME_H__
+#define __LOC_STUB_TIME_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int64_t systemTime(int clock);
+int64_t elapsedMillisSinceBoot();
+int64_t elapsedMicrosSinceBoot();
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __LOC_STUB_TIME_H__ */
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/loc-stub.pc.in b/sdm845/utils/platform_lib_abstractions/loc_stub/loc-stub.pc.in
new file mode 100644
index 0000000..c2ae764
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/loc-stub.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: loc-stub
+Description: QTI GPS Location Stub
+Version: @VERSION
+Libs: -L${libdir} -lloc_stub
+Cflags: -I${includedir}/loc-stub
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/Android.mk b/sdm845/utils/platform_lib_abstractions/loc_stub/src/Android.mk
new file mode 100644
index 0000000..e899ca3
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/Android.mk
@@ -0,0 +1,52 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+#Compile this library only for builds with the latest modem image
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+## Libs
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    liblog
+
+LOCAL_SRC_FILES += \
+        loc_stub_android_runtime.cpp \
+        loc_stub_gettid.cpp \
+        loc_stub_property_service.cpp \
+        loc_stub_sched_policy.cpp \
+        loc_stub_time.cpp
+
+LOCAL_CFLAGS += \
+     -fno-short-enums \
+     -D_ANDROID_ \
+     -std=c++11
+
+
+LOCAL_LDFLAGS += -Wl,--export-dynamic
+
+## Includes
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/../include \
+
+
+LOCAL_COPY_HEADERS_TO:= libloc_stub/
+LOCAL_COPY_HEADERS:= \
+        ../include/loc_stub_android_runtime.h \
+        ../include/loc_stub_gettid.h \
+        ../include/loc_stub_property_service.h \
+        ../include/loc_stub_sched_policy.h \
+        ../include/loc_stub_time.h
+
+LOCAL_MODULE := libloc_stub
+LOCAL_MODULE_PATH_32 := $(TARGET_OUT_VENDOR)/lib
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_VENDOR)/lib64
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/Makefile.am b/sdm845/utils/platform_lib_abstractions/loc_stub/src/Makefile.am
new file mode 100644
index 0000000..ba823a2
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/Makefile.am
@@ -0,0 +1,40 @@
+AM_CFLAGS = \
+     -I../include \
+     -D__func__=__PRETTY_FUNCTION__ \
+     -fno-short-enums
+
+libloc_stub_la_extra_h = \
+     ../include/utils/Log.h
+
+libloc_stub_la_c_sources = \
+     loc_stub_android_runtime.cpp \
+     loc_stub_gettid.cpp \
+     loc_stub_property_service.cpp \
+     loc_stub_sched_policy.cpp \
+     loc_stub_time.cpp
+
+libloc_stub_la_SOURCES = $(libloc_stub_la_c_sources) $(libloc_stub_la_extra_h)
+
+library_include_HEADERS = \
+     ../include/loc_stub_android_runtime.h \
+     ../include/loc_stub_gettid.h \
+     ../include/loc_stub_property_service.h \
+     ../include/loc_stub_sched_policy.h \
+     ../include/loc_stub_time.h
+
+library_includedir = $(pkgincludedir)
+
+if USE_GLIB
+libloc_stub_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+libloc_stub_la_LDFLAGS = -lstdc++ -Wl,-z,defs -lpthread @GLIB_LIBS@ -shared -version-info 1:0:0
+libloc_stub_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libloc_stub_la_CFLAGS = $(AM_CFLAGS)
+libloc_stub_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
+libloc_stub_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+libloc_stub_la_LIBADD = -lstdc++ -ldl -llog
+
+#Create and Install libraries
+lib_LTLIBRARIES = libloc_stub.la
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_android_runtime.cpp b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_android_runtime.cpp
new file mode 100644
index 0000000..1db69b2
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_android_runtime.cpp
@@ -0,0 +1,41 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "loc_stub_android_runtime.h"
+
+namespace android {
+
+pthread_t AndroidRuntime::createJavaThread(const char* name,
+    void (*start)(void *), void* arg)
+{
+    pthread_t threadId = 0;
+    pthread_create(&threadId, NULL, (void *(*)(void*))start, arg);
+    return threadId;
+}
+
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_gettid.cpp b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_gettid.cpp
new file mode 100644
index 0000000..55ef48a
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_gettid.cpp
@@ -0,0 +1,37 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "loc_stub_gettid.h"
+#include <sys/syscall.h>
+#include <unistd.h>
+
+// Required for off-target environment to compile properly
+pid_t gettid(void)
+{
+    return syscall(SYS_gettid);
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_property_service.cpp b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_property_service.cpp
new file mode 100644
index 0000000..f9d9e3e
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_property_service.cpp
@@ -0,0 +1,42 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "loc_stub_property_service.h"
+#include <stdio.h>
+#include <string.h>
+
+int property_get(const char *key, char * value, const char *default_value)
+{
+    /* This will disable gps interface
+       value[0] = '1';
+     */
+    if (strcmp(key, "ro.baseband") == 0) {
+        memcpy(value, "msm", 4);
+    }
+    return 0;
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_sched_policy.cpp b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_sched_policy.cpp
new file mode 100644
index 0000000..781be29
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_sched_policy.cpp
@@ -0,0 +1,50 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "loc_stub_sched_policy.h"
+
+/*===========================================================================
+FUNCTION set_sched_policy
+
+DESCRIPTION
+   Local copy of this function which bypasses android set_sched_policy
+
+DEPENDENCIES
+   None
+
+RETURN VALUE
+   0
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+int set_sched_policy(int tid, SchedPolicy policy)
+{
+    return 0;
+}
diff --git a/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_time.cpp b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_time.cpp
new file mode 100644
index 0000000..499cf00
--- /dev/null
+++ b/sdm845/utils/platform_lib_abstractions/loc_stub/src/loc_stub_time.cpp
@@ -0,0 +1,55 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "loc_stub_time.h"
+#include <stdlib.h>
+#include <sys/time.h>
+#include <time.h>
+
+int64_t systemTime(int clock)
+{
+    struct timeval t;
+    t.tv_sec = t.tv_usec = 0;
+    gettimeofday(&t, NULL);
+    return t.tv_sec*1000000LL + t.tv_usec;
+}
+
+int64_t elapsedMicrosSinceBoot()
+{
+    struct timespec ts;
+    int64_t time_ms = 0;
+    clock_gettime(CLOCK_BOOTTIME, &ts);
+    time_ms += (ts.tv_sec * 1000000000LL);     /* Seconds to nanoseconds */
+    time_ms += ts.tv_nsec;   /* Add Nanoseconds  */
+    return time_ms;
+}
+
+int64_t elapsedMillisSinceBoot()
+{
+    return (int64_t) (elapsedMicrosSinceBoot() /1000000LL);
+}