Merge remote-tracking branch 'goog/qcom/release/LA.UM.8.1.R1.09.00.00.529.037' into qt-dev

Bug: 131580615
Change-Id: Iaf60110b0da8b16bba6f135ebc962804bd2e33d8

113 files changed, 10838 insertions, 1427 deletions

diff --git a/android/1.0/Android.mk b/android/1.0/Android.mk
index 434b432..122ff8d 100644
--- a/android/1.0/Android.mk
+++ b/android/1.0/Android.mk
@@ -81,4 +81,9 @@ LOCAL_SHARED_LIBRARIES += \
     android.hardware.gnss@1.0 \
 
 LOCAL_CFLAGS += $(GNSS_CFLAGS)
+
+ifneq ($(LOC_HIDL_VERSION),)
+LOCAL_CFLAGS += -DLOC_HIDL_VERSION='"$(LOC_HIDL_VERSION)"'
+endif
+
 include $(BUILD_EXECUTABLE)
diff --git a/android/1.0/Gnss.cpp b/android/1.0/Gnss.cpp
index 6e34f1e..93b320b 100644
--- a/android/1.0/Gnss.cpp
+++ b/android/1.0/Gnss.cpp
@@ -27,7 +27,7 @@
 #include "Gnss.h"
 #include <LocationUtil.h>
 
-typedef void* (getLocationInterface)();
+typedef const GnssInterface* (getLocationInterface)();
 
 namespace android {
 namespace hardware {
@@ -84,7 +84,7 @@ GnssAPIClient* Gnss::getApi() {
     return mApi;
 }
 
-GnssInterface* Gnss::getGnssInterface() {
+const GnssInterface* Gnss::getGnssInterface() {
     static bool getGnssInterfaceFailed = false;
     if (nullptr == mGnssInterface && !getGnssInterfaceFailed) {
         LOC_LOGD("%s]: loading libgnss.so::getGnssInterface ...", __func__);
@@ -105,7 +105,7 @@ GnssInterface* Gnss::getGnssInterface() {
         if (NULL == getter) {
             getGnssInterfaceFailed = true;
         } else {
-            mGnssInterface = (GnssInterface*)(*getter)();
+            mGnssInterface = (const GnssInterface*)(*getter)();
         }
     }
     return mGnssInterface;
@@ -238,7 +238,7 @@ Return<bool> Gnss::injectLocation(double latitudeDegrees,
                                   double longitudeDegrees,
                                   float accuracyMeters)  {
     ENTRY_LOG_CALLFLOW();
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         gnssInterface->injectLocation(latitudeDegrees, longitudeDegrees, accuracyMeters);
         return true;
@@ -250,7 +250,7 @@ Return<bool> Gnss::injectLocation(double latitudeDegrees,
 Return<bool> Gnss::injectTime(int64_t timeMs, int64_t timeReferenceMs,
                               int32_t uncertaintyMs) {
     ENTRY_LOG_CALLFLOW();
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         gnssInterface->injectTime(timeMs, timeReferenceMs, uncertaintyMs);
         return true;
diff --git a/android/1.0/Gnss.h b/android/1.0/Gnss.h
index c23b337..900a510 100644
--- a/android/1.0/Gnss.h
+++ b/android/1.0/Gnss.h
@@ -99,7 +99,7 @@ struct Gnss : public IGnss {
     GnssAPIClient* getApi();
     Return<bool> setGnssNiCb(const sp<IGnssNiCallback>& niCb);
     Return<bool> updateConfiguration(GnssConfig& gnssConfig);
-    GnssInterface* getGnssInterface();
+    const GnssInterface* getGnssInterface();
 
     // Callback for ODCPI request
     void odcpiRequestCb(const OdcpiRequestInfo& request);
@@ -129,7 +129,7 @@ struct Gnss : public IGnss {
     sp<V1_0::IGnssCallback> mGnssCbIface = nullptr;
     sp<V1_0::IGnssNiCallback> mGnssNiCbIface = nullptr;
     GnssConfig mPendingConfig;
-    GnssInterface* mGnssInterface = nullptr;
+    const GnssInterface* mGnssInterface = nullptr;
 };
 
 extern "C" IGnss* HIDL_FETCH_IGnss(const char* name);
diff --git a/android/1.0/location_api/GnssAPIClient.cpp b/android/1.0/location_api/GnssAPIClient.cpp
index d04939e..a36d2b4 100644
--- a/android/1.0/location_api/GnssAPIClient.cpp
+++ b/android/1.0/location_api/GnssAPIClient.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -36,7 +36,7 @@
 
 #include "LocationUtil.h"
 #include "GnssAPIClient.h"
-#include <LocDualContext.h>
+#include <LocContext.h>
 
 namespace android {
 namespace hardware {
@@ -110,9 +110,9 @@ void GnssAPIClient::gnssUpdateCallbacks(const sp<IGnssCallback>& gpsCb,
 
     locationCallbacks.gnssNiCb = nullptr;
     loc_core::ContextBase* context =
-            loc_core::LocDualContext::getLocFgContext(
+            loc_core::LocContext::getLocContext(
                     NULL, NULL,
-                    loc_core::LocDualContext::mLocationHalName, false);
+                    loc_core::LocContext::mLocationHalName, false);
     if (mGnssNiCbIface != nullptr && !context->hasAgpsExtendedCapabilities()) {
         LOC_LOGD("Registering NI CB");
         locationCallbacks.gnssNiCb = [this](uint32_t id, GnssNiNotification gnssNiNotification) {
diff --git a/android/1.0/service.cpp b/android/1.0/service.cpp
index ee61a10..04bb8ab 100644
--- a/android/1.0/service.cpp
+++ b/android/1.0/service.cpp
@@ -22,22 +22,63 @@
 
 #include <android/hardware/gnss/1.0/IGnss.h>
 #include <hidl/LegacySupport.h>
-
 #include "loc_cfg.h"
+#include "loc_misc_utils.h"
+
 extern "C" {
 #include "vndfwk-detect.h"
 }
 
+#ifdef ARCH_ARM_32
+#define DEFAULT_HW_BINDER_MEM_SIZE 65536
+#endif
+
 using android::hardware::gnss::V1_0::IGnss;
-using android::hardware::defaultPassthroughServiceImplementation;
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::registerPassthroughServiceImplementation;
+using android::hardware::joinRpcThreadpool;
+
+using android::status_t;
+using android::OK;
+
+typedef int vendorEnhancedServiceMain(int /* argc */, char* /* argv */ []);
 
 int main() {
+
+    ALOGI("%s", __FUNCTION__);
+
     bool vendorEnhanced = isRunningWithVendorEnhancedFramework();
     setVendorEnhanced(vendorEnhanced);
 
-    if (!vendorEnhanced) {
-        return defaultPassthroughServiceImplementation<IGnss>();
+#ifdef ARCH_ARM_32
+    android::hardware::ProcessState::initWithMmapSize((size_t)(DEFAULT_HW_BINDER_MEM_SIZE));
+#endif
+    configureRpcThreadpool(1, true);
+    status_t status;
+
+    status = registerPassthroughServiceImplementation<IGnss>();
+    if (status == OK) {
+        if (vendorEnhanced) {
+    #ifdef LOC_HIDL_VERSION
+            #define VENDOR_ENHANCED_LIB "vendor.qti.gnss@" LOC_HIDL_VERSION "-service.so"
+
+            void* libHandle = NULL;
+            vendorEnhancedServiceMain* vendorEnhancedMainMethod = (vendorEnhancedServiceMain*)
+                    dlGetSymFromLib(libHandle, VENDOR_ENHANCED_LIB, "main");
+            if (NULL != vendorEnhancedMainMethod) {
+                (*vendorEnhancedMainMethod)(0, NULL);
+            }
+    #else
+            ALOGE("LOC_HIDL_VERSION not defined.");
+    #endif
+        }
+
+        joinRpcThreadpool();
+
     } else {
-        return -1;
+        ALOGE("Error while registering IGnss 1.0 service: %d", status);
     }
+
+    return 0;
 }
diff --git a/android/1.1/Android.mk b/android/1.1/Android.mk
index 33e5b0d..5c97f40 100644
--- a/android/1.1/Android.mk
+++ b/android/1.1/Android.mk
@@ -83,4 +83,9 @@ LOCAL_SHARED_LIBRARIES += \
     android.hardware.gnss@1.1 \
 
 LOCAL_CFLAGS += $(GNSS_CFLAGS)
+
+ifneq ($(LOC_HIDL_VERSION),)
+LOCAL_CFLAGS += -DLOC_HIDL_VERSION='"$(LOC_HIDL_VERSION)"'
+endif
+
 include $(BUILD_EXECUTABLE)
diff --git a/android/1.1/Gnss.cpp b/android/1.1/Gnss.cpp
index fca72e6..8d5d8a8 100644
--- a/android/1.1/Gnss.cpp
+++ b/android/1.1/Gnss.cpp
@@ -27,7 +27,7 @@
 #include "Gnss.h"
 #include <LocationUtil.h>
 
-typedef void* (getLocationInterface)();
+typedef const GnssInterface* (getLocationInterface)();
 
 #define IMAGES_INFO_FILE "/sys/devices/soc0/images"
 #define DELIMITER ";"
@@ -124,7 +124,7 @@ GnssAPIClient* Gnss::getApi() {
     return mApi;
 }
 
-GnssInterface* Gnss::getGnssInterface() {
+const GnssInterface* Gnss::getGnssInterface() {
     static bool getGnssInterfaceFailed = false;
     if (nullptr == mGnssInterface && !getGnssInterfaceFailed) {
         LOC_LOGD("%s]: loading libgnss.so::getGnssInterface ...", __func__);
@@ -145,7 +145,7 @@ GnssInterface* Gnss::getGnssInterface() {
         if (NULL == getter) {
             getGnssInterfaceFailed = true;
         } else {
-            mGnssInterface = (GnssInterface*)(*getter)();
+            mGnssInterface = (const GnssInterface*)(*getter)();
         }
     }
     return mGnssInterface;
@@ -278,7 +278,7 @@ Return<bool> Gnss::injectLocation(double latitudeDegrees,
                                   double longitudeDegrees,
                                   float accuracyMeters)  {
     ENTRY_LOG_CALLFLOW();
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         gnssInterface->injectLocation(latitudeDegrees, longitudeDegrees, accuracyMeters);
         return true;
@@ -290,7 +290,7 @@ Return<bool> Gnss::injectLocation(double latitudeDegrees,
 Return<bool> Gnss::injectTime(int64_t timeMs, int64_t timeReferenceMs,
                               int32_t uncertaintyMs) {
     ENTRY_LOG_CALLFLOW();
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         gnssInterface->injectTime(timeMs, timeReferenceMs, uncertaintyMs);
         return true;
@@ -375,7 +375,7 @@ Return<bool> Gnss::setCallback_1_1(const sp<V1_1::IGnssCallback>& callback) {
     ENTRY_LOG_CALLFLOW();
     callback->gnssNameCb(getVersionString());
     mGnssCbIface_1_1 = callback;
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         OdcpiRequestCallback cb = [this](const OdcpiRequestInfo& odcpiRequest) {
             odcpiRequestCb(odcpiRequest);
@@ -419,7 +419,7 @@ Return<sp<V1_1::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_1_1() {
 
 Return<bool> Gnss::injectBestLocation(const GnssLocation& gnssLocation) {
     ENTRY_LOG_CALLFLOW();
-    GnssInterface* gnssInterface = getGnssInterface();
+    const GnssInterface* gnssInterface = getGnssInterface();
     if (nullptr != gnssInterface) {
         Location location = {};
         convertGnssLocation(gnssLocation, location);
@@ -446,9 +446,9 @@ void Gnss::odcpiRequestCb(const OdcpiRequestInfo& request) {
     }
 }
 
-IGnss* HIDL_FETCH_IGnss(const char* hal) {
+V1_0::IGnss* HIDL_FETCH_IGnss(const char* hal) {
     ENTRY_LOG_CALLFLOW();
-    IGnss* iface = nullptr;
+    V1_0::IGnss* iface = nullptr;
     iface = new Gnss();
     if (iface == nullptr) {
         LOC_LOGE("%s]: failed to get %s", __FUNCTION__, hal);
diff --git a/android/1.1/Gnss.h b/android/1.1/Gnss.h
index 4c0c8b0..15645eb 100644
--- a/android/1.1/Gnss.h
+++ b/android/1.1/Gnss.h
@@ -109,7 +109,7 @@ struct Gnss : public IGnss {
     GnssAPIClient* getApi();
     Return<bool> setGnssNiCb(const sp<IGnssNiCallback>& niCb);
     Return<bool> updateConfiguration(GnssConfig& gnssConfig);
-    GnssInterface* getGnssInterface();
+    const GnssInterface* getGnssInterface();
 
     // Callback for ODCPI request
     void odcpiRequestCb(const OdcpiRequestInfo& request);
@@ -140,10 +140,10 @@ struct Gnss : public IGnss {
     sp<V1_1::IGnssCallback> mGnssCbIface_1_1 = nullptr;
     sp<V1_0::IGnssNiCallback> mGnssNiCbIface = nullptr;
     GnssConfig mPendingConfig;
-    GnssInterface* mGnssInterface = nullptr;
+    const GnssInterface* mGnssInterface = nullptr;
 };
 
-extern "C" IGnss* HIDL_FETCH_IGnss(const char* name);
+extern "C" V1_0::IGnss* HIDL_FETCH_IGnss(const char* name);
 
 }  // namespace implementation
 }  // namespace V1_1
diff --git a/android/1.1/location_api/GnssAPIClient.cpp b/android/1.1/location_api/GnssAPIClient.cpp
index fcef459..89877e5 100644
--- a/android/1.1/location_api/GnssAPIClient.cpp
+++ b/android/1.1/location_api/GnssAPIClient.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -36,7 +36,7 @@
 
 #include "LocationUtil.h"
 #include "GnssAPIClient.h"
-#include <LocDualContext.h>
+#include <LocContext.h>
 
 namespace android {
 namespace hardware {
@@ -110,9 +110,9 @@ void GnssAPIClient::gnssUpdateCallbacks(const sp<IGnssCallback>& gpsCb,
 
     locationCallbacks.gnssNiCb = nullptr;
     loc_core::ContextBase* context =
-            loc_core::LocDualContext::getLocFgContext(
+            loc_core::LocContext::getLocContext(
                     NULL, NULL,
-                    loc_core::LocDualContext::mLocationHalName, false);
+                    loc_core::LocContext::mLocationHalName, false);
     if (mGnssNiCbIface != nullptr && !context->hasAgpsExtendedCapabilities()) {
         LOC_LOGD("Registering NI CB");
         locationCallbacks.gnssNiCb = [this](uint32_t id, GnssNiNotification gnssNiNotification) {
diff --git a/android/1.1/location_api/MeasurementAPIClient.cpp b/android/1.1/location_api/MeasurementAPIClient.cpp
index 7017e52..6f25067 100644
--- a/android/1.1/location_api/MeasurementAPIClient.cpp
+++ b/android/1.1/location_api/MeasurementAPIClient.cpp
@@ -309,6 +309,18 @@ static void convertGnssData_1_1(GnssMeasurementsNotification& in,
     out.measurements.resize(in.count);
     for (size_t i = 0; i < in.count; i++) {
         convertGnssMeasurement(in.measurements[i], out.measurements[i].v1_0);
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_VALID_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_VALID;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_RESET_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_RESET;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_CYCLE_SLIP_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_CYCLE_SLIP;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_HALF_CYCLE_RESOLVED_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_HALF_CYCLE_RESOLVED;
     }
     convertGnssClock(in.clock, out.clock);
 }
diff --git a/android/1.1/service.cpp b/android/1.1/service.cpp
index c1bc6b0..bf7ad07 100644
--- a/android/1.1/service.cpp
+++ b/android/1.1/service.cpp
@@ -22,22 +22,63 @@
 
 #include <android/hardware/gnss/1.1/IGnss.h>
 #include <hidl/LegacySupport.h>
-
 #include "loc_cfg.h"
+#include "loc_misc_utils.h"
+
 extern "C" {
 #include "vndfwk-detect.h"
 }
 
+#ifdef ARCH_ARM_32
+#define DEFAULT_HW_BINDER_MEM_SIZE 65536
+#endif
+
 using android::hardware::gnss::V1_1::IGnss;
-using android::hardware::defaultPassthroughServiceImplementation;
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::registerPassthroughServiceImplementation;
+using android::hardware::joinRpcThreadpool;
+
+using android::status_t;
+using android::OK;
+
+typedef int vendorEnhancedServiceMain(int /* argc */, char* /* argv */ []);
 
 int main() {
+
+    ALOGI("%s", __FUNCTION__);
+
     bool vendorEnhanced = isRunningWithVendorEnhancedFramework();
     setVendorEnhanced(vendorEnhanced);
 
-    if (!vendorEnhanced) {
-        return defaultPassthroughServiceImplementation<IGnss>();
+#ifdef ARCH_ARM_32
+    android::hardware::ProcessState::initWithMmapSize((size_t)(DEFAULT_HW_BINDER_MEM_SIZE));
+#endif
+    configureRpcThreadpool(1, true);
+    status_t status;
+
+    status = registerPassthroughServiceImplementation<IGnss>();
+    if (status == OK) {
+        if (vendorEnhanced) {
+    #ifdef LOC_HIDL_VERSION
+            #define VENDOR_ENHANCED_LIB "vendor.qti.gnss@" LOC_HIDL_VERSION "-service.so"
+
+            void* libHandle = NULL;
+            vendorEnhancedServiceMain* vendorEnhancedMainMethod = (vendorEnhancedServiceMain*)
+                    dlGetSymFromLib(libHandle, VENDOR_ENHANCED_LIB, "main");
+            if (NULL != vendorEnhancedMainMethod) {
+                (*vendorEnhancedMainMethod)(0, NULL);
+            }
+    #else
+            ALOGE("LOC_HIDL_VERSION not defined.");
+    #endif
+        }
+
+        joinRpcThreadpool();
+
     } else {
-        return -1;
+        ALOGE("Error while registering IGnss 1.1 service: %d", status);
     }
+
+    return 0;
 }
diff --git a/android/2.0/AGnss.cpp b/android/2.0/AGnss.cpp
new file mode 100644
index 0000000..7bd015e
--- /dev/null
+++ b/android/2.0/AGnss.cpp
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 2017-2019, 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"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+static AGnss* spAGnss = nullptr;
+
+AGnss::AGnss(Gnss* gnss) : mGnss(gnss) {
+    spAGnss = this;
+}
+
+AGnss::~AGnss() {
+    spAGnss = nullptr;
+}
+
+void AGnss::agnssStatusIpV4Cb(AGnssExtStatusIpV4 status) {
+    if (nullptr != spAGnss) {
+        spAGnss->statusCb(status.type, status.status);
+    }
+}
+
+void AGnss::statusCb(AGpsExtType type, LocAGpsStatusValue status) {
+
+    V2_0::IAGnssCallback::AGnssType  aType;
+    IAGnssCallback::AGnssStatusValue aStatus;
+
+    switch (type) {
+    case LOC_AGPS_TYPE_SUPL:
+        aType = IAGnssCallback::AGnssType::SUPL;
+        break;
+    case LOC_AGPS_TYPE_SUPL_ES:
+        aType = IAGnssCallback::AGnssType::SUPL_EIMS;
+        break;
+    default:
+        LOC_LOGE("invalid type: %d", type);
+        return;
+    }
+
+    switch (status) {
+    case LOC_GPS_REQUEST_AGPS_DATA_CONN:
+        aStatus = IAGnssCallback::AGnssStatusValue::REQUEST_AGNSS_DATA_CONN;
+        break;
+    case LOC_GPS_RELEASE_AGPS_DATA_CONN:
+        aStatus = IAGnssCallback::AGnssStatusValue::RELEASE_AGNSS_DATA_CONN;
+        break;
+    case LOC_GPS_AGPS_DATA_CONNECTED:
+        aStatus = IAGnssCallback::AGnssStatusValue::AGNSS_DATA_CONNECTED;
+        break;
+    case LOC_GPS_AGPS_DATA_CONN_DONE:
+        aStatus = IAGnssCallback::AGnssStatusValue::AGNSS_DATA_CONN_DONE;
+        break;
+    case LOC_GPS_AGPS_DATA_CONN_FAILED:
+        aStatus = IAGnssCallback::AGnssStatusValue::AGNSS_DATA_CONN_FAILED;
+        break;
+    default:
+        LOC_LOGE("invalid status: %d", status);
+        return;
+    }
+
+    if (mAGnssCbIface != nullptr) {
+        auto r = mAGnssCbIface->agnssStatusCb(aType, aStatus);
+        if (!r.isOk()) {
+            LOC_LOGw("Error invoking AGNSS status cb %s", r.description().c_str());
+        }
+    }
+    else {
+        LOC_LOGw("setCallback has not been called yet");
+    }
+}
+
+Return<void> AGnss::setCallback(const sp<V2_0::IAGnssCallback>& callback) {
+
+    if(mGnss == nullptr || mGnss->getGnssInterface() == nullptr){
+        LOC_LOGE("Null GNSS interface");
+        return Void();
+    }
+
+    // Save the interface
+    mAGnssCbIface = callback;
+
+    AgpsCbInfo cbInfo = {};
+    cbInfo.statusV4Cb = (void*)agnssStatusIpV4Cb;
+    cbInfo.cbPriority = AGPS_CB_PRIORITY_HIGH;
+
+    mGnss->getGnssInterface()->agpsInit(cbInfo);
+    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(uint64_t /*networkHandle*/, const hidl_string& apn,
+        V2_0::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());
+
+    AGpsBearerType bearerType;
+    switch (apnIpType) {
+    case IAGnss::ApnIpType::IPV4:
+        bearerType = AGPS_APN_BEARER_IPV4;
+        break;
+    case IAGnss::ApnIpType::IPV6:
+        bearerType = AGPS_APN_BEARER_IPV6;
+        break;
+    case IAGnss::ApnIpType::IPV4V6:
+        bearerType = AGPS_APN_BEARER_IPV4V6;
+        break;
+    default:
+        bearerType = AGPS_APN_BEARER_IPV4;
+        break;
+    }
+
+    mGnss->getGnssInterface()->agpsDataConnOpen(
+        LOC_AGPS_TYPE_SUPL, apn.c_str(), apn.size(), (int)bearerType);
+    return true;
+}
+
+Return<bool> AGnss::setServer(V2_0::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::SUPL) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_SUPL;
+    } else if (type == IAGnssCallback::AGnssType::C2K) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_C2K;
+    } else if (type == IAGnssCallback::AGnssType::SUPL_EIMS) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_SUPL_EIMS;
+    } else if (type == IAGnssCallback::AGnssType::SUPL_IMS) {
+        config.assistanceServer.type = GNSS_ASSISTANCE_TYPE_SUPL_IMS;
+    } else {
+        LOC_LOGE("%s]: invalid AGnssType: %d", __FUNCTION__, static_cast<uint8_t>(type));
+        return false;
+    }
+    config.assistanceServer.hostName = strdup(hostname.c_str());
+    config.assistanceServer.port = port;
+    return mGnss->updateConfiguration(config);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/AGnss.h b/android/2.0/AGnss.h
new file mode 100644
index 0000000..c442327
--- /dev/null
+++ b/android/2.0/AGnss.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_AGNSS_H
+#define ANDROID_HARDWARE_GNSS_V2_0_AGNSS_H
+
+#include <android/hardware/gnss/2.0/IAGnss.h>
+#include <hidl/Status.h>
+#include <gps_extended_c.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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;
+struct AGnss : public V2_0::IAGnss {
+
+    AGnss(Gnss* gnss);
+    ~AGnss();
+    /*
+     * Methods from ::android::hardware::gnss::V2_0::IAGnss interface follow.
+     * These declarations were generated from IAGnss.hal.
+     */
+    Return<void> setCallback(const sp<V2_0::IAGnssCallback>& callback) override;
+
+    Return<bool> dataConnClosed() override;
+
+    Return<bool> dataConnFailed() override;
+
+    Return<bool> dataConnOpen(uint64_t networkHandle, const hidl_string& apn,
+            V2_0::IAGnss::ApnIpType apnIpType) override;
+
+    Return<bool> setServer(V2_0::IAGnssCallback::AGnssType type,
+                         const hidl_string& hostname, int32_t port) override;
+
+    void statusCb(AGpsExtType type, LocAGpsStatusValue status);
+
+    /* Data call setup callback passed down to GNSS HAL implementation */
+    static void agnssStatusIpV4Cb(AGnssExtStatusIpV4 status);
+
+ private:
+    Gnss* mGnss = nullptr;
+    sp<IAGnssCallback> mAGnssCbIface = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_AGNSS_H
diff --git a/android/2.0/AGnssRil.cpp b/android/2.0/AGnssRil.cpp
new file mode 100644
index 0000000..9de8b7d
--- /dev/null
+++ b/android/2.0/AGnssRil.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2017-2019, 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"
+#include <DataItemConcreteTypesBase.h>
+
+typedef void* (getLocationInterface)();
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+
+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();
+    // Extra NetworkTypes not available in IAgnssRil enums
+    const int NetworkType_BLUETOOTH = 7;
+    const int NetworkType_ETHERNET = 9;
+    const int NetworkType_PROXY = 16;
+
+    // for XTRA
+    if (nullptr != mGnss && ( nullptr != mGnss->getGnssInterface() )) {
+        int8_t typeout = loc_core::NetworkInfoDataItemBase::TYPE_UNKNOWN;
+        switch(type)
+        {
+            case IAGnssRil::NetworkType::MOBILE:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_MOBILE;
+                break;
+            case IAGnssRil::NetworkType::WIFI:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_WIFI;
+                break;
+            case IAGnssRil::NetworkType::MMS:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_MMS;
+                break;
+            case IAGnssRil::NetworkType::SUPL:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_SUPL;
+                break;
+            case IAGnssRil::NetworkType::DUN:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_DUN;
+                break;
+            case IAGnssRil::NetworkType::HIPRI:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_HIPRI;
+                break;
+            case IAGnssRil::NetworkType::WIMAX:
+                typeout = loc_core::NetworkInfoDataItemBase::TYPE_WIMAX;
+                break;
+            default:
+                {
+                    int networkType = (int) type;
+                    // Handling network types not available in IAgnssRil
+                    switch(networkType)
+                    {
+                        case NetworkType_BLUETOOTH:
+                            typeout = loc_core::NetworkInfoDataItemBase::TYPE_BLUETOOTH;
+                            break;
+                        case NetworkType_ETHERNET:
+                            typeout = loc_core::NetworkInfoDataItemBase::TYPE_ETHERNET;
+                            break;
+                        case NetworkType_PROXY:
+                            typeout = loc_core::NetworkInfoDataItemBase::TYPE_PROXY;
+                            break;
+                        default:
+                            typeout = loc_core::NetworkInfoDataItemBase::TYPE_UNKNOWN;
+                    }
+                }
+                break;
+        }
+        mGnss->getGnssInterface()->updateConnectionStatus(connected, false, typeout, 0);
+    }
+    return true;
+}
+Return<bool> AGnssRil::updateNetworkState_2_0(const V2_0::IAGnssRil::NetworkAttributes& attributes) {
+    ENTRY_LOG_CALLFLOW();
+
+    if (nullptr != mGnss && (nullptr != mGnss->getGnssInterface())) {
+        int8_t typeout = loc_core::NetworkInfoDataItemBase::TYPE_UNKNOWN;
+        bool roaming = false;
+        if (attributes.capabilities & IAGnssRil::NetworkCapability::NOT_METERED) {
+            typeout = loc_core::NetworkInfoDataItemBase::TYPE_WIFI;
+        } else {
+            typeout = loc_core::NetworkInfoDataItemBase::TYPE_MOBILE;
+        }
+        if (attributes.capabilities & IAGnssRil::NetworkCapability::NOT_ROAMING) {
+            roaming = false;
+        }
+        mGnss->getGnssInterface()->updateConnectionStatus(attributes.isConnected,
+                typeout, roaming, (NetworkHandle) attributes.networkHandle);
+    }
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/AGnssRil.h b/android/2.0/AGnssRil.h
new file mode 100644
index 0000000..a04d8aa
--- /dev/null
+++ b/android/2.0/AGnssRil.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_AGNSSRIL_H_
+#define ANDROID_HARDWARE_GNSS_V2_0_AGNSSRIL_H_
+
+#include <android/hardware/gnss/2.0/IAGnssRil.h>
+#include <hidl/Status.h>
+#include <location_interface.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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;
+/*
+ * 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 V2_0::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<V1_0::IAGnssRilCallback>& /*callback*/) override {
+        return Void();
+    }
+    Return<void> setRefLocation(const V1_0::IAGnssRil::AGnssRefLocation& /*agnssReflocation*/) override {
+        return Void();
+    }
+    Return<bool> setSetId(V1_0::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, V1_0::IAGnssRil::NetworkType type, bool roaming) override;
+
+    // Methods from ::android::hardware::gnss::V2_0::IAGnssRil follow
+    Return<bool> updateNetworkState_2_0(const V2_0::IAGnssRil::NetworkAttributes& attributes) override;
+
+ private:
+    Gnss* mGnss = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_AGNSSRIL_H_
diff --git a/android/2.0/Android.mk b/android/2.0/Android.mk
new file mode 100644
index 0000000..2000bb8
--- /dev/null
+++ b/android/2.0/Android.mk
@@ -0,0 +1,102 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.gnss@2.0-impl-qti
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    AGnss.cpp \
+    Gnss.cpp \
+    AGnssRil.cpp \
+    GnssMeasurement.cpp \
+    GnssConfiguration.cpp \
+    GnssBatching.cpp \
+    GnssGeofencing.cpp \
+    GnssNi.cpp \
+    GnssDebug.cpp \
+    ../measurement_corrections/1.0/MeasurementCorrections.cpp \
+    ../visibility_control/1.0/GnssVisibilityControl.cpp
+
+LOCAL_SRC_FILES += \
+    location_api/GnssAPIClient.cpp \
+    location_api/MeasurementAPIClient.cpp \
+    location_api/GeofenceAPIClient.cpp \
+    location_api/BatchingAPIClient.cpp \
+    location_api/LocationUtil.cpp \
+
+ifeq ($(GNSS_HIDL_LEGACY_MEASURMENTS),true)
+LOCAL_CFLAGS += \
+     -DGNSS_HIDL_LEGACY_MEASURMENTS
+endif
+
+LOCAL_C_INCLUDES:= \
+    $(LOCAL_PATH)/location_api \
+    $(LOCAL_PATH)/../measurement_corrections/1.0 \
+    $(LOCAL_PATH)/../visibility_control/1.0
+LOCAL_HEADER_LIBRARIES := \
+    libgps.utils_headers \
+    libloc_core_headers \
+    libloc_pla_headers \
+    liblocation_api_headers
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libhidlbase \
+    libhidltransport \
+    libhwbinder \
+    libcutils \
+    libutils \
+    android.hardware.gnss@1.0 \
+    android.hardware.gnss@1.1 \
+    android.hardware.gnss@2.0 \
+    android.hardware.gnss.measurement_corrections@1.0 \
+    android.hardware.gnss.visibility_control@1.0
+
+LOCAL_SHARED_LIBRARIES += \
+    libloc_core \
+    libgps.utils \
+    libdl \
+    liblocation_api \
+
+LOCAL_CFLAGS += $(GNSS_CFLAGS)
+include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.gnss@2.0-service-qti
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_INIT_RC := android.hardware.gnss@2.0-service-qti.rc
+LOCAL_SRC_FILES := \
+    service.cpp \
+
+LOCAL_HEADER_LIBRARIES := \
+    libgps.utils_headers \
+    libloc_core_headers \
+    libloc_pla_headers \
+    liblocation_api_headers
+
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libcutils \
+    libdl \
+    libbase \
+    libutils \
+    libgps.utils \
+    libqti_vndfwk_detect \
+
+LOCAL_SHARED_LIBRARIES += \
+    libhwbinder \
+    libhidlbase \
+    libhidltransport \
+    android.hardware.gnss@1.0 \
+    android.hardware.gnss@1.1 \
+    android.hardware.gnss@2.0 \
+
+LOCAL_CFLAGS += $(GNSS_CFLAGS)
+
+ifneq ($(LOC_HIDL_VERSION),)
+LOCAL_CFLAGS += -DLOC_HIDL_VERSION='"$(LOC_HIDL_VERSION)"'
+endif
+
+include $(BUILD_EXECUTABLE)
diff --git a/android/2.0/Gnss.cpp b/android/2.0/Gnss.cpp
new file mode 100644
index 0000000..1021938
--- /dev/null
+++ b/android/2.0/Gnss.cpp
@@ -0,0 +1,538 @@
+/*
+ * Copyright (c) 2017-2019, 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 <fstream>
+#include <log_util.h>
+#include <dlfcn.h>
+#include <cutils/properties.h>
+#include "Gnss.h"
+#include "LocationUtil.h"
+
+typedef const GnssInterface* (getLocationInterface)();
+
+#define IMAGES_INFO_FILE "/sys/devices/soc0/images"
+#define DELIMITER ";"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::visibility_control::V1_0::implementation::GnssVisibilityControl;
+
+static std::string getVersionString() {
+    static std::string version;
+    if (!version.empty())
+        return version;
+
+    char value[PROPERTY_VALUE_MAX] = {0};
+    property_get("ro.hardware", value, "unknown");
+    version.append(value).append(DELIMITER);
+
+    std::ifstream in(IMAGES_INFO_FILE);
+    std::string s;
+    while(getline(in, s)) {
+        std::size_t found = s.find("CRM:");
+        if (std::string::npos == found) {
+            continue;
+        }
+
+        // skip over space characters after "CRM:"
+        const char* substr = s.c_str();
+        found += 4;
+        while (0 != substr[found] && isspace(substr[found])) {
+            found++;
+        }
+        if (s.find("11:") != found) {
+            continue;
+        }
+        s.erase(0, found + 3);
+
+        found = s.find_first_of("\r\n");
+        if (std::string::npos != found) {
+            s.erase(s.begin() + found, s.end());
+        }
+        version.append(s).append(DELIMITER);
+    }
+    return version;
+}
+
+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;
+}
+
+const 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 = (const GnssInterface*)(*getter)();
+        }
+    }
+    return mGnssInterface;
+}
+
+Return<bool> Gnss::setCallback(const sp<V1_0::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->gnssEnable(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->gnssConfigurationUpdate(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;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT;
+            mPendingConfig.blacklistedSvIds = gnssConfig.blacklistedSvIds;
+        }
+        if (gnssConfig.flags & GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
+            mPendingConfig.flags |= GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT;
+            mPendingConfig.emergencyExtensionSeconds = gnssConfig.emergencyExtensionSeconds;
+        }
+    }
+    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->gnssDisable();
+    }
+
+    return Void();
+}
+
+Return<bool> Gnss::injectLocation(double latitudeDegrees,
+                                  double longitudeDegrees,
+                                  float accuracyMeters)  {
+    ENTRY_LOG_CALLFLOW();
+    const 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();
+    const GnssInterface* gnssInterface = getGnssInterface();
+    if (nullptr != gnssInterface) {
+        gnssInterface->injectTime(timeMs, timeReferenceMs, uncertaintyMs);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+Return<void> Gnss::deleteAidingData(V1_0::IGnss::GnssAidingData aidingDataFlags)  {
+    ENTRY_LOG_CALLFLOW();
+    GnssAPIClient* api = getApi();
+    if (api) {
+        api->gnssDeleteAidingData(aidingDataFlags);
+    }
+    return Void();
+}
+
+Return<bool> Gnss::setPositionMode(V1_0::IGnss::GnssPositionMode mode,
+                                   V1_0::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<V1_0::IAGnss>> Gnss::getExtensionAGnss()  {
+    ENTRY_LOG_CALLFLOW();
+    //mAGnssIface = new ::android::hardware::gnss::V1_1::implementation::AGnss(this); //need V1_1 AGnss
+    //return mAGnssIface;
+    return nullptr;
+}
+
+Return<sp<V1_0::IGnssNi>> Gnss::getExtensionGnssNi()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssNi = new GnssNi(this);
+    return mGnssNi;
+}
+
+Return<sp<V1_0::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement() {
+    ENTRY_LOG_CALLFLOW();
+    if (mGnssMeasurement == nullptr)
+        mGnssMeasurement = new GnssMeasurement();
+    return mGnssMeasurement;
+}
+
+Return<sp<V1_0::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssConfig = new GnssConfiguration(this);
+    return mGnssConfig;
+}
+
+Return<sp<V1_0::IGnssGeofencing>> Gnss::getExtensionGnssGeofencing()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssGeofencingIface = new GnssGeofencing();
+    return mGnssGeofencingIface;
+}
+
+Return<sp<V1_0::IGnssBatching>> Gnss::getExtensionGnssBatching()  {
+    ENTRY_LOG_CALLFLOW();
+    mGnssBatching = new GnssBatching();
+    return mGnssBatching;
+}
+
+Return<sp<V1_0::IGnssDebug>> Gnss::getExtensionGnssDebug() {
+    ENTRY_LOG_CALLFLOW();
+    mGnssDebug = new GnssDebug(this);
+    return mGnssDebug;
+}
+
+Return<sp<V1_0::IAGnssRil>> Gnss::getExtensionAGnssRil() {
+    ENTRY_LOG_CALLFLOW();
+    mGnssRil = new AGnssRil(this);
+    return mGnssRil;
+}
+
+// Methods from ::android::hardware::gnss::V1_1::IGnss follow.
+Return<bool> Gnss::setCallback_1_1(const sp<V1_1::IGnssCallback>& callback) {
+    ENTRY_LOG_CALLFLOW();
+    callback->gnssNameCb(getVersionString());
+    mGnssCbIface_1_1 = callback;
+    const GnssInterface* gnssInterface = getGnssInterface();
+    if (nullptr != gnssInterface) {
+        OdcpiRequestCallback cb = [this](const OdcpiRequestInfo& odcpiRequest) {
+            odcpiRequestCb(odcpiRequest);
+        };
+        gnssInterface->odcpiInit(cb);
+    }
+    return setCallback(callback);
+}
+
+Return<bool> Gnss::setPositionMode_1_1(V1_0::IGnss::GnssPositionMode mode,
+        V1_0::IGnss::GnssPositionRecurrence recurrence,
+        uint32_t minIntervalMs,
+        uint32_t preferredAccuracyMeters,
+        uint32_t preferredTimeMs,
+        bool lowPowerMode) {
+    ENTRY_LOG_CALLFLOW();
+    bool retVal = false;
+    GnssAPIClient* api = getApi();
+    if (api) {
+        GnssPowerMode powerMode = lowPowerMode?
+                GNSS_POWER_MODE_M4 : GNSS_POWER_MODE_M2;
+        retVal = api->gnssSetPositionMode(mode, recurrence, minIntervalMs,
+                preferredAccuracyMeters, preferredTimeMs, powerMode, minIntervalMs);
+    }
+    return retVal;
+}
+
+Return<sp<V1_1::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement_1_1() {
+    ENTRY_LOG_CALLFLOW();
+#ifdef GNSS_HIDL_LEGACY_MEASURMENTS
+    return nullptr;
+#else
+    if (mGnssMeasurement == nullptr)
+        mGnssMeasurement = new GnssMeasurement();
+    return mGnssMeasurement;
+#endif
+}
+
+Return<sp<V1_1::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_1_1() {
+    ENTRY_LOG_CALLFLOW();
+    if (mGnssConfig == nullptr)
+        mGnssConfig = new GnssConfiguration(this);
+    return mGnssConfig;
+}
+
+Return<bool> Gnss::injectBestLocation(const GnssLocation& gnssLocation) {
+    ENTRY_LOG_CALLFLOW();
+    const GnssInterface* gnssInterface = getGnssInterface();
+    if (nullptr != gnssInterface) {
+        Location location = {};
+        convertGnssLocation(gnssLocation, location);
+        gnssInterface->odcpiInject(location);
+    }
+    return true;
+}
+
+void Gnss::odcpiRequestCb(const OdcpiRequestInfo& request) {
+    ENTRY_LOG_CALLFLOW();
+    if (mGnssCbIface_1_1 != nullptr) {
+        // For emergency mode, request DBH (Device based hybrid) location
+        // Mark Independent from GNSS flag to false.
+        if (ODCPI_REQUEST_TYPE_START == request.type) {
+            auto r = mGnssCbIface_1_1->gnssRequestLocationCb(!request.isEmergencyMode);
+            if (!r.isOk()) {
+                LOC_LOGe("Error invoking gnssRequestLocationCb %s", r.description().c_str());
+            }
+        } else {
+            LOC_LOGv("Unsupported ODCPI request type: %d", request.type);
+        }
+    } else {
+        LOC_LOGe("ODCPI request not supported.");
+    }
+}
+
+// Methods from ::android::hardware::gnss::V2_0::IGnss follow.
+Return<bool> Gnss::setCallback_2_0(const sp<V2_0::IGnssCallback>& callback) {
+    ENTRY_LOG_CALLFLOW();
+    return setCallback_1_1(callback);
+}
+Return<sp<V2_0::IAGnss>> Gnss::getExtensionAGnss_2_0() {
+    ENTRY_LOG_CALLFLOW();
+    mAGnssIface_2_0 = new AGnss(this);
+    return mAGnssIface_2_0;
+}
+Return<sp<V2_0::IAGnssRil>> Gnss::getExtensionAGnssRil_2_0() {
+    mGnssRil = new AGnssRil(this);
+    return mGnssRil;
+}
+
+Return<sp<V2_0::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_2_0() {
+    ENTRY_LOG_CALLFLOW();
+    mGnssConfig = new GnssConfiguration(this);
+    return mGnssConfig;
+}
+Return<sp<V2_0::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement_2_0() {
+    ENTRY_LOG_CALLFLOW();
+#ifdef GNSS_HIDL_LEGACY_MEASURMENTS
+    return nullptr;
+#else
+    if (mGnssMeasurement == nullptr)
+        mGnssMeasurement = new GnssMeasurement();
+    return mGnssMeasurement;
+#endif
+}
+Return<sp<::android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrections>>
+        Gnss::getExtensionMeasurementCorrections() {
+    if (mGnssMeasCorr == nullptr) {
+        mGnssMeasCorr = new MeasurementCorrections();
+    }
+    return mGnssMeasCorr;
+}
+Return<sp<::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControl>>
+        Gnss::getExtensionVisibilityControl() {
+    ENTRY_LOG_CALLFLOW();
+    if (mVisibCtrl == nullptr) {
+        mVisibCtrl = new GnssVisibilityControl(this);
+    }
+    return mVisibCtrl;
+}
+
+Return<bool> Gnss::injectBestLocation_2_0(
+    const ::android::hardware::gnss::V2_0::GnssLocation& location) {
+    ENTRY_LOG_CALLFLOW();
+    /* TBD */
+    return false;
+}
+
+Return<sp<V2_0::IGnssBatching>> Gnss::getExtensionGnssBatching_2_0()  {
+    ENTRY_LOG_CALLFLOW();
+    return nullptr;
+}
+
+Return<sp<V2_0::IGnssDebug>> Gnss::getExtensionGnssDebug_2_0() {
+    ENTRY_LOG_CALLFLOW();
+    return nullptr;
+}
+
+V1_0::IGnss* HIDL_FETCH_IGnss(const char* hal) {
+    ENTRY_LOG_CALLFLOW();
+    V1_0::IGnss* iface = nullptr;
+    iface = new Gnss();
+    if (iface == nullptr) {
+        LOC_LOGE("%s]: failed to get %s", __FUNCTION__, hal);
+    }
+    return iface;
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/Gnss.h b/android/2.0/Gnss.h
new file mode 100644
index 0000000..df62901
--- /dev/null
+++ b/android/2.0/Gnss.h
@@ -0,0 +1,185 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSS_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSS_H
+
+#include <AGnss.h>
+#include <AGnssRil.h>
+#include <GnssConfiguration.h>
+#include <GnssMeasurement.h>
+#include <GnssBatching.h>
+#include <GnssGeofencing.h>
+#include <GnssNi.h>
+#include <GnssDebug.h>
+
+#include <android/hardware/gnss/2.0/IGnss.h>
+#include <MeasurementCorrections.h>
+#include <GnssVisibilityControl.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include "GnssAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+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;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+using ::android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrections;
+using ::android::hardware::gnss::measurement_corrections::V1_0::implementation::MeasurementCorrections;
+using ::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControl;
+
+struct Gnss : public IGnss {
+    Gnss();
+    ~Gnss();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnss follow.
+     * These declarations were generated from Gnss.hal.
+     */
+    Return<bool> setCallback(const sp<V1_0::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(V1_0::IGnss::GnssAidingData aidingDataFlags)  override;
+    Return<bool> setPositionMode(V1_0::IGnss::GnssPositionMode mode,
+                                 V1_0::IGnss::GnssPositionRecurrence recurrence,
+                                 uint32_t minIntervalMs,
+                                 uint32_t preferredAccuracyMeters,
+                                 uint32_t preferredTimeMs)  override;
+    Return<sp<V1_0::IAGnss>> getExtensionAGnss() override;
+    Return<sp<V1_0::IGnssNi>> getExtensionGnssNi() override;
+    Return<sp<V1_0::IGnssMeasurement>> getExtensionGnssMeasurement() override;
+    Return<sp<V1_0::IGnssConfiguration>> getExtensionGnssConfiguration() override;
+    Return<sp<V1_0::IGnssGeofencing>> getExtensionGnssGeofencing() override;
+    Return<sp<V1_0::IGnssBatching>> getExtensionGnssBatching() override;
+
+    Return<sp<V1_0::IAGnssRil>> getExtensionAGnssRil() override;
+
+    inline Return<sp<V1_0::IGnssNavigationMessage>> getExtensionGnssNavigationMessage() override {
+        return nullptr;
+    }
+
+    inline Return<sp<V1_0::IGnssXtra>> getExtensionXtra() override {
+        return nullptr;
+    }
+
+    Return<sp<V1_0::IGnssDebug>> getExtensionGnssDebug() override;
+
+    // Methods from ::android::hardware::gnss::V1_1::IGnss follow.
+    Return<bool> setCallback_1_1(const sp<V1_1::IGnssCallback>& callback) override;
+    Return<bool> setPositionMode_1_1(V1_0::IGnss::GnssPositionMode mode,
+            V1_0::IGnss::GnssPositionRecurrence recurrence,
+            uint32_t minIntervalMs, uint32_t preferredAccuracyMeters,
+            uint32_t preferredTimeMs, bool lowPowerMode) override;
+    Return<sp<V1_1::IGnssMeasurement>> getExtensionGnssMeasurement_1_1() override;
+    Return<sp<V1_1::IGnssConfiguration>> getExtensionGnssConfiguration_1_1() override;
+    Return<bool> injectBestLocation(const GnssLocation& location) override;
+
+    // Methods from ::android::hardware::gnss::V2_0::IGnss follow.
+    Return<bool> setCallback_2_0(const sp<V2_0::IGnssCallback>& callback) override;
+    Return<sp<V2_0::IAGnss>> getExtensionAGnss_2_0() override;
+    Return<sp<V2_0::IAGnssRil>> getExtensionAGnssRil_2_0() override;
+
+    Return<sp<V2_0::IGnssConfiguration>> getExtensionGnssConfiguration_2_0() override;
+    Return<sp<::android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrections>>
+            getExtensionMeasurementCorrections() override;
+    Return<sp<V2_0::IGnssMeasurement>> getExtensionGnssMeasurement_2_0() override;
+
+    Return<bool> injectBestLocation_2_0(const ::android::hardware::gnss::V2_0::GnssLocation& location) override;
+
+    Return<sp<V2_0::IGnssBatching>> getExtensionGnssBatching_2_0() override;
+    Return<sp<V2_0::IGnssDebug>> getExtensionGnssDebug_2_0() override;
+
+
+    /**
+     * This method returns the IGnssVisibilityControl interface.
+     *
+     * @return visibilityControlIface Handle to the IGnssVisibilityControl interface.
+     */
+    Return<sp<::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControl>>
+            getExtensionVisibilityControl() 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);
+    const GnssInterface* getGnssInterface();
+
+    // Callback for ODCPI request
+    void odcpiRequestCb(const OdcpiRequestInfo& request);
+ 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<V1_0::IGnssNi> mGnssNi = nullptr;
+    sp<V1_0::IGnssGeofencing> mGnssGeofencingIface = nullptr;
+    sp<V1_0::IGnssBatching> mGnssBatching = nullptr;
+    sp<V1_0::IGnssDebug> mGnssDebug = nullptr;
+    sp<V1_0::IAGnss> mAGnssIface = nullptr;
+    sp<V1_0::IGnssCallback> mGnssCbIface = nullptr;
+    sp<V1_0::IGnssNiCallback> mGnssNiCbIface = nullptr;
+    sp<V1_1::IGnssCallback> mGnssCbIface_1_1 = nullptr;
+    sp<V2_0::IAGnss> mAGnssIface_2_0 = nullptr;
+    sp<V2_0::IAGnssRil> mGnssRil = nullptr;
+    sp<V2_0::IGnssMeasurement> mGnssMeasurement = nullptr;
+    sp<V2_0::IGnssConfiguration> mGnssConfig = nullptr;
+    sp<IMeasurementCorrections> mGnssMeasCorr = nullptr;
+    sp<IGnssVisibilityControl> mVisibCtrl = nullptr;
+
+    GnssAPIClient* mApi = nullptr;
+    GnssConfig mPendingConfig;
+    const GnssInterface* mGnssInterface = nullptr;
+};
+
+extern "C" V1_0::IGnss* HIDL_FETCH_IGnss(const char* name);
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSS_H
diff --git a/android/2.0/GnssBatching.cpp b/android/2.0/GnssBatching.cpp
new file mode 100644
index 0000000..cf215ea
--- /dev/null
+++ b/android/2.0/GnssBatching.cpp
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2017-2019, 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 V2_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_LOGD("%s]: mApi is NOT nullptr, delete it first", __FUNCTION__);
+        delete mApi;
+        mApi = nullptr;
+    }
+
+    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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssBatching.h b/android/2.0/GnssBatching.h
new file mode 100644
index 0000000..f7dc65b
--- /dev/null
+++ b/android/2.0/GnssBatching.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSBATCHING_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSBATCHING_H
+
+#include <android/hardware/gnss/1.0/IGnssBatching.h>
+#include <hidl/Status.h>
+
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSBATCHING_H
diff --git a/android/2.0/GnssConfiguration.cpp b/android/2.0/GnssConfiguration.cpp
new file mode 100644
index 0000000..eb98be1
--- /dev/null
+++ b/android/2.0/GnssConfiguration.cpp
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 2017-2019, 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"
+#include <android/hardware/gnss/1.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::GnssConstellationType;
+
+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 0:
+            config.suplModeMask = 0; // STANDALONE ONLY
+            break;
+        case 1:
+            config.suplModeMask = GNSS_CONFIG_SUPL_MODE_MSB_BIT;
+            break;
+        case 2:
+            config.suplModeMask = GNSS_CONFIG_SUPL_MODE_MSA_BIT;
+            break;
+        case 3:
+            config.suplModeMask = GNSS_CONFIG_SUPL_MODE_MSB_BIT | GNSS_CONFIG_SUPL_MODE_MSA_BIT;
+            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) {
+    /* we no longer set GPS lock here, there is
+       visibility control for this */
+    return true;
+}
+
+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);
+}
+
+// Methods from ::android::hardware::gnss::V1_1::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setBlacklist(
+            const hidl_vec<GnssConfiguration::BlacklistedSource>& blacklist) {
+
+    ENTRY_LOG_CALLFLOW();
+    if (nullptr == mGnss) {
+        LOC_LOGe("mGnss is null");
+        return false;
+    }
+
+    // blValid is true if blacklist is empty, i.e. clearing the BL;
+    // if blacklist is not empty, blValid is initialied to false, and later
+    // updated in the for loop to become true only if there is at least
+    // one {constellation, svid} in the list that is valid.
+    bool blValid = (0 == blacklist.size());
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT;
+    config.blacklistedSvIds.clear();
+
+    GnssSvIdSource source = {};
+    for (int idx = 0; idx < (int)blacklist.size(); idx++) {
+        // Set blValid true if any one source is valid
+        blValid = setBlacklistedSource(source, blacklist[idx]) || blValid;
+        config.blacklistedSvIds.push_back(source);
+    }
+
+    // Update configuration only if blValid is true
+    // i.e. only if atleast one source is valid for blacklisting
+    return (blValid && mGnss->updateConfiguration(config));
+}
+
+bool GnssConfiguration::setBlacklistedSource(
+        GnssSvIdSource& copyToSource,
+        const GnssConfiguration::BlacklistedSource& copyFromSource) {
+
+    bool retVal = true;
+    uint16_t svIdOffset = 0;
+    copyToSource.size = sizeof(GnssSvIdSource);
+    copyToSource.svId = copyFromSource.svid;
+
+    switch(copyFromSource.constellation) {
+    case GnssConstellationType::GPS:
+        copyToSource.constellation = GNSS_SV_TYPE_GPS;
+        LOC_LOGe("GPS SVs can't be blacklisted.");
+        retVal = false;
+        break;
+    case GnssConstellationType::SBAS:
+        copyToSource.constellation = GNSS_SV_TYPE_SBAS;
+        LOC_LOGe("SBAS SVs can't be blacklisted.");
+        retVal = false;
+        break;
+    case GnssConstellationType::GLONASS:
+        copyToSource.constellation = GNSS_SV_TYPE_GLONASS;
+        svIdOffset = GNSS_SV_CONFIG_GLO_INITIAL_SV_ID - 1;
+        break;
+    case GnssConstellationType::QZSS:
+        copyToSource.constellation = GNSS_SV_TYPE_QZSS;
+        svIdOffset = 0;
+        break;
+    case GnssConstellationType::BEIDOU:
+        copyToSource.constellation = GNSS_SV_TYPE_BEIDOU;
+        svIdOffset = GNSS_SV_CONFIG_BDS_INITIAL_SV_ID - 1;
+        break;
+    case GnssConstellationType::GALILEO:
+        copyToSource.constellation = GNSS_SV_TYPE_GALILEO;
+        svIdOffset = GNSS_SV_CONFIG_GAL_INITIAL_SV_ID - 1;
+        break;
+    default:
+        copyToSource.constellation = GNSS_SV_TYPE_UNKNOWN;
+        LOC_LOGe("Invalid constellation %d", copyFromSource.constellation);
+        retVal = false;
+        break;
+    }
+
+    if (copyToSource.svId > 0 && svIdOffset > 0) {
+        copyToSource.svId += svIdOffset;
+    }
+
+    return retVal;
+}
+
+// Methods from ::android::hardware::gnss::V2_0::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setEsExtensionSec(uint32_t emergencyExtensionSeconds) {
+    ENTRY_LOG_CALLFLOW();
+    if (mGnss == nullptr) {
+        LOC_LOGe("mGnss is nullptr");
+        return false;
+    }
+
+    GnssConfig config;
+    memset(&config, 0, sizeof(GnssConfig));
+    config.size = sizeof(GnssConfig);
+    config.flags = GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT;
+    config.emergencyExtensionSeconds = emergencyExtensionSeconds;
+
+    return mGnss->updateConfiguration(config);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssConfiguration.h b/android/2.0/GnssConfiguration.h
new file mode 100644
index 0000000..202a9fd
--- /dev/null
+++ b/android/2.0/GnssConfiguration.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSCONFIGURATION_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSCONFIGURATION_H
+
+#include <android/hardware/gnss/2.0/IGnssConfiguration.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+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 V2_0::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;
+
+    // Methods from ::android::hardware::gnss::V1_1::IGnssConfiguration follow.
+    Return<bool> setBlacklist(
+            const hidl_vec<GnssConfiguration::BlacklistedSource>& blacklist) override;
+
+    // Methods from ::android::hardware::gnss::V2_0::IGnssConfiguration follow.
+    Return<bool> setEsExtensionSec(uint32_t emergencyExtensionSeconds) override;
+
+ private:
+    Gnss* mGnss = nullptr;
+    bool setBlacklistedSource(
+            GnssSvIdSource& copyToSource,
+            const GnssConfiguration::BlacklistedSource& copyFromSource);
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSCONFIGURATION_H
diff --git a/android/2.0/GnssDebug.cpp b/android/2.0/GnssDebug.cpp
new file mode 100644
index 0000000..582acc9
--- /dev/null
+++ b/android/2.0/GnssDebug.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2017-2019, 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_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 V2_0 {
+namespace implementation {
+
+using ::android::hardware::hidl_vec;
+
+#define GNSS_DEBUG_UNKNOWN_HORIZONTAL_ACCURACY_METERS (20000000)
+#define GNSS_DEBUG_UNKNOWN_VERTICAL_ACCURACY_METERS   (20000)
+#define GNSS_DEBUG_UNKNOWN_SPEED_ACCURACY_PER_SEC     (500)
+#define GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG       (180)
+
+#define GNSS_DEBUG_UNKNOWN_UTC_TIME            (1483228800000LL) // 1/1/2017 00:00 GMT
+#define GNSS_DEBUG_UNKNOWN_UTC_TIME_UNC        (1.57783680E17) // 5 years in ns
+#define GNSS_DEBUG_UNKNOWN_FREQ_UNC_NS_PER_SEC (2.0e5)  // ppm
+
+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_LOGD("%s]: ", __func__);
+
+    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;
+
+        timeval tv_now, tv_report;
+        tv_report.tv_sec  = reports.mLocation.mUtcReported.tv_sec;
+        tv_report.tv_usec = reports.mLocation.mUtcReported.tv_nsec / 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;
+    }
+    else {
+        data.position.valid = false;
+    }
+
+    if (data.position.horizontalAccuracyMeters <= 0 ||
+        data.position.horizontalAccuracyMeters > GNSS_DEBUG_UNKNOWN_HORIZONTAL_ACCURACY_METERS) {
+        data.position.horizontalAccuracyMeters = GNSS_DEBUG_UNKNOWN_HORIZONTAL_ACCURACY_METERS;
+    }
+    if (data.position.verticalAccuracyMeters <= 0 ||
+        data.position.verticalAccuracyMeters > GNSS_DEBUG_UNKNOWN_VERTICAL_ACCURACY_METERS) {
+        data.position.verticalAccuracyMeters = GNSS_DEBUG_UNKNOWN_VERTICAL_ACCURACY_METERS;
+    }
+    if (data.position.speedAccuracyMetersPerSecond <= 0 ||
+        data.position.speedAccuracyMetersPerSecond > GNSS_DEBUG_UNKNOWN_SPEED_ACCURACY_PER_SEC) {
+        data.position.speedAccuracyMetersPerSecond = GNSS_DEBUG_UNKNOWN_SPEED_ACCURACY_PER_SEC;
+    }
+    if (data.position.bearingAccuracyDegrees <= 0 ||
+        data.position.bearingAccuracyDegrees > GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG) {
+        data.position.bearingAccuracyDegrees = GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG;
+    }
+
+    // time block
+    if (reports.mTime.mValid) {
+        data.time.timeEstimate = reports.mTime.timeEstimate;
+        data.time.timeUncertaintyNs = reports.mTime.timeUncertaintyNs;
+        data.time.frequencyUncertaintyNsPerSec =
+            reports.mTime.frequencyUncertaintyNsPerSec;
+    }
+
+    if (data.time.timeEstimate < GNSS_DEBUG_UNKNOWN_UTC_TIME) {
+        data.time.timeEstimate = GNSS_DEBUG_UNKNOWN_UTC_TIME;
+    }
+    if (data.time.timeUncertaintyNs <= 0 ||
+        data.time.timeUncertaintyNs > (float)GNSS_DEBUG_UNKNOWN_UTC_TIME_UNC) {
+        data.time.timeUncertaintyNs = (float)GNSS_DEBUG_UNKNOWN_UTC_TIME_UNC;
+    }
+    if (data.time.frequencyUncertaintyNsPerSec <= 0 ||
+        data.time.frequencyUncertaintyNsPerSec > (float)GNSS_DEBUG_UNKNOWN_FREQ_UNC_NS_PER_SEC) {
+        data.time.frequencyUncertaintyNsPerSec = (float)GNSS_DEBUG_UNKNOWN_FREQ_UNC_NS_PER_SEC;
+    }
+
+    // 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;
+
+    // callback HIDL with collected debug data
+    _hidl_cb(data);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssDebug.h b/android/2.0/GnssDebug.h
new file mode 100644
index 0000000..8d4fde3
--- /dev/null
+++ b/android/2.0/GnssDebug.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSDEBUG_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSDEBUG_H
+
+
+#include <android/hardware/gnss/1.0/IGnssDebug.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSDEBUG_H
diff --git a/android/2.0/GnssGeofencing.cpp b/android/2.0/GnssGeofencing.cpp
new file mode 100644
index 0000000..b72d835
--- /dev/null
+++ b/android/2.0/GnssGeofencing.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2017-2019, 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 V2_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_LOGd("mApi is NOT nullptr");
+        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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssGeofencing.h b/android/2.0/GnssGeofencing.h
new file mode 100644
index 0000000..caa56d0
--- /dev/null
+++ b/android/2.0/GnssGeofencing.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSGEOFENCING_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSGEOFENCING_H
+
+#include <android/hardware/gnss/1.0/IGnssGeofencing.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSGEOFENCING_H
diff --git a/android/2.0/GnssMeasurement.cpp b/android/2.0/GnssMeasurement.cpp
new file mode 100644
index 0000000..721a48c
--- /dev/null
+++ b/android/2.0/GnssMeasurement.cpp
@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2017-2019, 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 "GnssMeasurement.h"
+#include "MeasurementAPIClient.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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<GnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback(
+        const sp<V1_0::IGnssMeasurementCallback>& callback)  {
+
+    Return<GnssMeasurement::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);
+
+    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;
+    }
+    if (mGnssMeasurementCbIface_1_1 != nullptr) {
+        mGnssMeasurementCbIface_1_1->unlinkToDeath(mGnssMeasurementDeathRecipient);
+        mGnssMeasurementCbIface_1_1 = nullptr;
+    }
+    if (mGnssMeasurementCbIface_2_0 != nullptr) {
+        mGnssMeasurementCbIface_2_0->unlinkToDeath(mGnssMeasurementDeathRecipient);
+        mGnssMeasurementCbIface_2_0 = nullptr;
+    }
+    mApi->measurementClose();
+
+    return Void();
+}
+
+// Methods from ::android::hardware::gnss::V1_1::IGnssMeasurement follow.
+Return<GnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_1_1(
+        const sp<V1_1::IGnssMeasurementCallback>& callback, bool enableFullTracking) {
+
+    Return<GnssMeasurement::GnssMeasurementStatus> ret =
+        IGnssMeasurement::GnssMeasurementStatus::ERROR_GENERIC;
+    if (mGnssMeasurementCbIface_1_1 != 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 (nullptr == mApi) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+        return ret;
+    }
+
+    mGnssMeasurementCbIface_1_1 = callback;
+    mGnssMeasurementCbIface_1_1->linkToDeath(mGnssMeasurementDeathRecipient, 0);
+
+    GnssPowerMode powerMode = enableFullTracking?
+            GNSS_POWER_MODE_M1 : GNSS_POWER_MODE_M2;
+
+    return mApi->measurementSetCallback_1_1(callback, powerMode);
+}
+// Methods from ::android::hardware::gnss::V2_0::IGnssMeasurement follow.
+Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_2_0(
+        const sp<V2_0::IGnssMeasurementCallback>& callback,
+        bool enableFullTracking) {
+
+    Return<GnssMeasurement::GnssMeasurementStatus> ret =
+        IGnssMeasurement::GnssMeasurementStatus::ERROR_GENERIC;
+    if (mGnssMeasurementCbIface_2_0 != 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 (nullptr == mApi) {
+        LOC_LOGE("%s]: mApi is nullptr", __FUNCTION__);
+        return ret;
+    }
+
+    mGnssMeasurementCbIface_2_0 = callback;
+    mGnssMeasurementCbIface_2_0->linkToDeath(mGnssMeasurementDeathRecipient, 0);
+
+    GnssPowerMode powerMode = enableFullTracking ?
+        GNSS_POWER_MODE_M1 : GNSS_POWER_MODE_M2;
+
+    return mApi->measurementSetCallback_2_0(callback, powerMode);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssMeasurement.h b/android/2.0/GnssMeasurement.h
new file mode 100644
index 0000000..000b00f
--- /dev/null
+++ b/android/2.0/GnssMeasurement.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSMEASUREMENT_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSMEASUREMENT_H
+
+#include <android/hardware/gnss/2.0/IGnssMeasurement.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+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 V2_0::IGnssMeasurement {
+    GnssMeasurement();
+    ~GnssMeasurement();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
+     * These declarations were generated from IGnssMeasurement.hal.
+     */
+    Return<GnssMeasurement::GnssMeasurementStatus> setCallback(
+        const sp<V1_0::IGnssMeasurementCallback>& callback) override;
+    Return<void> close() override;
+
+    // Methods from ::android::hardware::gnss::V1_1::IGnssMeasurement follow.
+    Return<GnssMeasurement::GnssMeasurementStatus> setCallback_1_1(
+            const sp<V1_1::IGnssMeasurementCallback>& callback,
+            bool enableFullTracking) override;
+
+    // Methods from ::android::hardware::gnss::V2_0::IGnssMeasurement follow.
+    Return<GnssMeasurement::GnssMeasurementStatus> setCallback_2_0(
+            const sp<V2_0::IGnssMeasurementCallback>& callback,
+            bool enableFullTracking) 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<V1_0::IGnssMeasurementCallback> mGnssMeasurementCbIface = nullptr;
+    sp<V1_1::IGnssMeasurementCallback> mGnssMeasurementCbIface_1_1 = nullptr;
+    sp<V2_0::IGnssMeasurementCallback> mGnssMeasurementCbIface_2_0 = nullptr;
+    MeasurementAPIClient* mApi;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSMEASUREMENT_H
diff --git a/android/2.0/GnssNi.cpp b/android/2.0/GnssNi.cpp
new file mode 100644
index 0000000..d65a488
--- /dev/null
+++ b/android/2.0/GnssNi.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2017-2019, 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 V2_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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/GnssNi.h b/android/2.0/GnssNi.h
new file mode 100644
index 0000000..26e281f
--- /dev/null
+++ b/android/2.0/GnssNi.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017-2019, 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_V2_0_GNSSNI_H
+#define ANDROID_HARDWARE_GNSS_V2_0_GNSSNI_H
+
+#include <android/hardware/gnss/1.0/IGnssNi.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_0_GNSSNI_H
diff --git a/android/dummy/android.hardware.gnss@1.0-service-qti.rc b/android/2.0/android.hardware.gnss@2.0-service-qti.rc
index b5da6f9..36ee47c 100644
--- a/android/dummy/android.hardware.gnss@1.0-service-qti.rc
+++ b/android/2.0/android.hardware.gnss@2.0-service-qti.rc
@@ -1,4 +1,4 @@
-service gnss_service /vendor/bin/hw/android.hardware.gnss@1.0-service-qti
+service gnss_service /vendor/bin/hw/android.hardware.gnss@2.0-service-qti
     class hal
     user gps
     group system gps radio
diff --git a/android/2.0/location_api/BatchingAPIClient.cpp b/android/2.0/location_api/BatchingAPIClient.cpp
new file mode 100644
index 0000000..48caee6
--- /dev/null
+++ b/android/2.0/location_api/BatchingAPIClient.cpp
@@ -0,0 +1,196 @@
+/* Copyright (c) 2017-2019, 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"
+
+#include "limits.h"
+
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssBatching;
+using ::android::hardware::gnss::V1_0::IGnssBatchingCallback;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+
+static void convertBatchOption(const IGnssBatching::Options& in, LocationOptions& out,
+        LocationCapabilitiesMask mask);
+
+BatchingAPIClient::BatchingAPIClient(const sp<IGnssBatchingCallback>& callback) :
+    LocationAPIClientBase(),
+    mGnssBatchingCbIface(callback),
+    mDefaultId(UINT_MAX),
+    mLocationCapabilitiesMask(0)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    LocationCallbacks locationCallbacks;
+    memset(&locationCallbacks, 0, sizeof(LocationCallbacks));
+    locationCallbacks.size = sizeof(LocationCallbacks);
+
+    locationCallbacks.trackingCb = nullptr;
+    locationCallbacks.batchingCb = nullptr;
+    if (mGnssBatchingCbIface != nullptr) {
+        locationCallbacks.batchingCb = [this](size_t count, Location* location,
+            BatchingOptions batchOptions) {
+            onBatchingCb(count, location, batchOptions);
+        };
+    }
+    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(mDefaultId, last_n_locations);
+}
+
+void BatchingAPIClient::flushBatchedLocations()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    locAPIGetBatchedLocations(mDefaultId, SIZE_MAX);
+}
+
+void BatchingAPIClient::onCapabilitiesCb(LocationCapabilitiesMask capabilitiesMask)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, capabilitiesMask);
+    mLocationCapabilitiesMask = capabilitiesMask;
+}
+
+void BatchingAPIClient::onBatchingCb(size_t count, Location* location,
+        BatchingOptions /*batchOptions*/)
+{
+    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]);
+        }
+        auto r = mGnssBatchingCbIface->gnssLocationBatchCb(locationVec);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssLocationBatchCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/location_api/BatchingAPIClient.h b/android/2.0/location_api/BatchingAPIClient.h
new file mode 100644
index 0000000..33a8c2e
--- /dev/null
+++ b/android/2.0/location_api/BatchingAPIClient.h
@@ -0,0 +1,74 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+class BatchingAPIClient : public LocationAPIClientBase
+{
+public:
+    BatchingAPIClient(const sp<V1_0::IGnssBatchingCallback>& callback);
+    ~BatchingAPIClient();
+    int getBatchSize();
+    int startSession(const V1_0::IGnssBatching::Options& options);
+    int updateSessionOptions(const V1_0::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, BatchingOptions batchOptions) final;
+
+private:
+    sp<V1_0::IGnssBatchingCallback> mGnssBatchingCbIface;
+    uint32_t mDefaultId;
+    LocationCapabilitiesMask mLocationCapabilitiesMask;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // BATCHING_API_CLINET_H
diff --git a/android/2.0/location_api/GeofenceAPIClient.cpp b/android/2.0/location_api/GeofenceAPIClient.cpp
new file mode 100644
index 0000000..fabf8bb
--- /dev/null
+++ b/android/2.0/location_api/GeofenceAPIClient.cpp
@@ -0,0 +1,275 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssGeofenceCallback;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+
+GeofenceAPIClient::GeofenceAPIClient(const sp<IGnssGeofenceCallback>& callback) :
+    LocationAPIClientBase(),
+    mGnssGeofencingCbIface(callback)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    LocationCallbacks locationCallbacks;
+    memset(&locationCallbacks, 0, sizeof(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;
+            }
+
+            auto r = mGnssGeofencingCbIface->gnssGeofenceTransitionCb(
+                    geofenceBreachNotification.ids[i], gnssLocation, transition,
+                    static_cast<V1_0::GnssUtcTime>(geofenceBreachNotification.timestamp));
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssGeofenceTransitionCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+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));
+        auto r = mGnssGeofencingCbIface->gnssGeofenceStatusCb(status, gnssLocation);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssGeofenceStatusCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+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;
+            auto r = mGnssGeofencingCbIface->gnssGeofenceAddCb(ids[i], status);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssGeofenceAddCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+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;
+            auto r = mGnssGeofencingCbIface->gnssGeofenceRemoveCb(ids[i], status);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssGeofenceRemoveCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+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;
+            auto r = mGnssGeofencingCbIface->gnssGeofencePauseCb(ids[i], status);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssGeofencePauseCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+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;
+            auto r = mGnssGeofencingCbIface->gnssGeofenceResumeCb(ids[i], status);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssGeofenceResumeCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/location_api/GeofenceAPIClient.h b/android/2.0/location_api/GeofenceAPIClient.h
new file mode 100644
index 0000000..71049de
--- /dev/null
+++ b/android/2.0/location_api/GeofenceAPIClient.h
@@ -0,0 +1,76 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+using ::android::sp;
+
+class GeofenceAPIClient : public LocationAPIClientBase
+{
+public:
+    GeofenceAPIClient(const sp<V1_0::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<V1_0::IGnssGeofenceCallback> mGnssGeofencingCbIface;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // GEOFENCE_API_CLINET_H
diff --git a/android/2.0/location_api/GnssAPIClient.cpp b/android/2.0/location_api/GnssAPIClient.cpp
new file mode 100644
index 0000000..44ae284
--- /dev/null
+++ b/android/2.0/location_api/GnssAPIClient.cpp
@@ -0,0 +1,565 @@
+/* Copyright (c) 2017-2019, 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"
+#define SINGLE_SHOT_MIN_TRACKING_INTERVAL_MSEC (590 * 60 * 60 * 1000) // 590 hours
+
+#include <log_util.h>
+#include <loc_cfg.h>
+
+#include "LocationUtil.h"
+#include "GnssAPIClient.h"
+#include <LocContext.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnss;
+using ::android::hardware::gnss::V1_0::IGnssCallback;
+using ::android::hardware::gnss::V1_0::IGnssNiCallback;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+
+static void convertGnssSvStatus(GnssSvNotification& in, IGnssCallback::GnssSvStatus& out);
+
+GnssAPIClient::GnssAPIClient(const sp<IGnssCallback>& gpsCb,
+    const sp<IGnssNiCallback>& niCb) :
+    LocationAPIClientBase(),
+    mGnssCbIface(nullptr),
+    mGnssNiCbIface(nullptr),
+    mControlClient(new LocationAPIControlClient()),
+    mLocationCapabilitiesMask(0),
+    mLocationCapabilitiesCached(false)
+{
+    LOC_LOGD("%s]: (%p %p)", __FUNCTION__, &gpsCb, &niCb);
+
+    // set default LocationOptions.
+    memset(&mTrackingOptions, 0, sizeof(TrackingOptions));
+    mTrackingOptions.size = sizeof(TrackingOptions);
+    mTrackingOptions.minInterval = 1000;
+    mTrackingOptions.minDistance = 0;
+    mTrackingOptions.mode = GNSS_SUPL_MODE_STANDALONE;
+
+    gnssUpdateCallbacks(gpsCb, niCb);
+}
+
+GnssAPIClient::~GnssAPIClient()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    if (mControlClient) {
+        delete mControlClient;
+        mControlClient = nullptr;
+    }
+}
+
+// for GpsInterface
+void GnssAPIClient::gnssUpdateCallbacks(const sp<IGnssCallback>& gpsCb,
+    const sp<IGnssNiCallback>& niCb)
+{
+    LOC_LOGD("%s]: (%p %p)", __FUNCTION__, &gpsCb, &niCb);
+
+    mMutex.lock();
+    mGnssCbIface = gpsCb;
+    mGnssNiCbIface = niCb;
+    mMutex.unlock();
+
+    LocationCallbacks locationCallbacks;
+    memset(&locationCallbacks, 0, sizeof(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;
+    loc_core::ContextBase* context =
+            loc_core::LocContext::getLocContext(
+                    NULL, NULL,
+                    loc_core::LocContext::mLocationHalName, false);
+    if (mGnssNiCbIface != nullptr && !context->hasAgpsExtendedCapabilities()) {
+        LOC_LOGD("Registering NI CB");
+        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(mTrackingOptions);
+    return retVal;
+}
+
+bool GnssAPIClient::gnssStop()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    bool retVal = true;
+    locAPIStopTracking();
+    return retVal;
+}
+
+bool GnssAPIClient::gnssSetPositionMode(IGnss::GnssPositionMode mode,
+        IGnss::GnssPositionRecurrence recurrence, uint32_t minIntervalMs,
+        uint32_t preferredAccuracyMeters, uint32_t preferredTimeMs,
+        GnssPowerMode powerMode, uint32_t timeBetweenMeasurement)
+{
+    LOC_LOGD("%s]: (%d %d %d %d %d %d %d)", __FUNCTION__,
+            (int)mode, recurrence, minIntervalMs, preferredAccuracyMeters,
+            preferredTimeMs, (int)powerMode, timeBetweenMeasurement);
+    bool retVal = true;
+    memset(&mTrackingOptions, 0, sizeof(TrackingOptions));
+    mTrackingOptions.size = sizeof(TrackingOptions);
+    mTrackingOptions.minInterval = minIntervalMs;
+    if (IGnss::GnssPositionMode::MS_ASSISTED == mode ||
+            IGnss::GnssPositionRecurrence::RECURRENCE_SINGLE == recurrence) {
+        // We set a very large interval to simulate SINGLE mode. Once we report a fix,
+        // the caller should take the responsibility to stop the session.
+        // For MSA, we always treat it as SINGLE mode.
+        mTrackingOptions.minInterval = SINGLE_SHOT_MIN_TRACKING_INTERVAL_MSEC;
+    }
+    mTrackingOptions.minDistance = preferredAccuracyMeters;
+    if (mode == IGnss::GnssPositionMode::STANDALONE)
+        mTrackingOptions.mode = GNSS_SUPL_MODE_STANDALONE;
+    else if (mode == IGnss::GnssPositionMode::MS_BASED)
+        mTrackingOptions.mode = GNSS_SUPL_MODE_MSB;
+    else if (mode ==  IGnss::GnssPositionMode::MS_ASSISTED)
+        mTrackingOptions.mode = GNSS_SUPL_MODE_MSA;
+    else {
+        LOC_LOGD("%s]: invalid GnssPositionMode: %d", __FUNCTION__, (int)mode);
+        retVal = false;
+    }
+    if (GNSS_POWER_MODE_INVALID != powerMode) {
+        mTrackingOptions.powerMode = powerMode;
+        mTrackingOptions.tbm = timeBetweenMeasurement;
+    }
+    locAPIUpdateTrackingOptions(mTrackingOptions);
+    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;
+    switch (userResponse) {
+    case IGnssNiCallback::GnssUserResponseType::RESPONSE_ACCEPT:
+        data = GNSS_NI_RESPONSE_ACCEPT;
+        break;
+    case IGnssNiCallback::GnssUserResponseType::RESPONSE_DENY:
+        data = GNSS_NI_RESPONSE_DENY;
+        break;
+    case IGnssNiCallback::GnssUserResponseType::RESPONSE_NORESP:
+        data = GNSS_NI_RESPONSE_NO_RESPONSE;
+        break;
+    default:
+        data = GNSS_NI_RESPONSE_IGNORE;
+        break;
+    }
+
+    locAPIGnssNiResponse(notifId, data);
+}
+
+// these apis using LocationAPIControlClient
+void GnssAPIClient::gnssDeleteAidingData(IGnss::GnssAidingData aidingDataFlags)
+{
+    LOC_LOGD("%s]: (%02hx)", __FUNCTION__, aidingDataFlags);
+    if (mControlClient == nullptr) {
+        return;
+    }
+    GnssAidingData data;
+    memset(&data, 0, sizeof (GnssAidingData));
+    data.sv.svTypeMask = GNSS_AIDING_DATA_SV_TYPE_GPS_BIT |
+        GNSS_AIDING_DATA_SV_TYPE_GLONASS_BIT |
+        GNSS_AIDING_DATA_SV_TYPE_QZSS_BIT |
+        GNSS_AIDING_DATA_SV_TYPE_BEIDOU_BIT |
+        GNSS_AIDING_DATA_SV_TYPE_GALILEO_BIT;
+
+    if (aidingDataFlags == IGnss::GnssAidingData::DELETE_ALL)
+        data.deleteAll = true;
+    else {
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_EPHEMERIS)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_EPHEMERIS_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_ALMANAC)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_ALMANAC_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_POSITION)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_POSITION_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_TIME)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_TIME_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_IONO)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_IONOSPHERE_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_UTC)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_UTC_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_HEALTH)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_HEALTH_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SVDIR)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_DIRECTION_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SVSTEER)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_STEER_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_SADATA)
+            data.sv.svMask |= GNSS_AIDING_DATA_SV_SA_DATA_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_RTI)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_RTI_BIT;
+        if (aidingDataFlags & IGnss::GnssAidingData::DELETE_CELLDB_INFO)
+            data.common.mask |= GNSS_AIDING_DATA_COMMON_CELLDB_BIT;
+    }
+    mControlClient->locAPIGnssDeleteAidingData(data);
+}
+
+void GnssAPIClient::gnssEnable(LocationTechnologyType techType)
+{
+    LOC_LOGD("%s]: (%0d)", __FUNCTION__, techType);
+    if (mControlClient == nullptr) {
+        return;
+    }
+    mControlClient->locAPIEnable(techType);
+}
+
+void GnssAPIClient::gnssDisable()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    if (mControlClient == nullptr) {
+        return;
+    }
+    mControlClient->locAPIDisable();
+}
+
+void GnssAPIClient::gnssConfigurationUpdate(const GnssConfig& gnssConfig)
+{
+    LOC_LOGD("%s]: (%02x)", __FUNCTION__, gnssConfig.flags);
+    if (mControlClient == nullptr) {
+        return;
+    }
+    mControlClient->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;
+
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (gnssCbIface != 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;
+        auto r = gnssCbIface->gnssSetCapabilitesCb(data);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssSetCapabilitesCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+    if (gnssCbIface != nullptr) {
+        IGnssCallback::GnssSystemInfo gnssInfo;
+        if (capabilitiesMask & LOCATION_CAPABILITIES_CONSTELLATION_ENABLEMENT_BIT ||
+            capabilitiesMask & LOCATION_CAPABILITIES_AGPM_BIT) {
+            gnssInfo.yearOfHw = 2018;
+        } else if (capabilitiesMask & LOCATION_CAPABILITIES_DEBUG_NMEA_BIT) {
+            gnssInfo.yearOfHw = 2017;
+        } else if (capabilitiesMask & LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT) {
+            gnssInfo.yearOfHw = 2016;
+        } else {
+            gnssInfo.yearOfHw = 2015;
+        }
+        LOC_LOGV("%s:%d] set_system_info_cb (%d)", __FUNCTION__, __LINE__, gnssInfo.yearOfHw);
+        auto r = gnssCbIface->gnssSetSystemInfoCb(gnssInfo);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssSetSystemInfoCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+void GnssAPIClient::onTrackingCb(Location location)
+{
+    LOC_LOGD("%s]: (flags: %02x)", __FUNCTION__, location.flags);
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (gnssCbIface != nullptr) {
+        GnssLocation gnssLocation;
+        convertGnssLocation(location, gnssLocation);
+        auto r = gnssCbIface->gnssLocationCb(gnssLocation);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssLocationCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+void GnssAPIClient::onGnssNiCb(uint32_t id, GnssNiNotification gnssNiNotification)
+{
+    LOC_LOGD("%s]: (id: %d)", __FUNCTION__, id);
+    mMutex.lock();
+    auto gnssNiCbIface(mGnssNiCbIface);
+    mMutex.unlock();
+
+    if (gnssNiCbIface == 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 = IGnssNiCallback::GnssNiType::EMERGENCY_SUPL;
+
+    if (gnssNiNotification.options & GNSS_NI_OPTIONS_NOTIFICATION_BIT)
+        notificationGnss.notifyFlags |= IGnssNiCallback::GnssNiNotifyFlags::NEED_NOTIFY;
+    if (gnssNiNotification.options & GNSS_NI_OPTIONS_VERIFICATION_BIT)
+        notificationGnss.notifyFlags |= IGnssNiCallback::GnssNiNotifyFlags::NEED_VERIFY;
+    if (gnssNiNotification.options & GNSS_NI_OPTIONS_PRIVACY_OVERRIDE_BIT)
+        notificationGnss.notifyFlags |= 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;
+
+    gnssNiCbIface->niNotifyCb(notificationGnss);
+}
+
+void GnssAPIClient::onGnssSvCb(GnssSvNotification gnssSvNotification)
+{
+    LOC_LOGD("%s]: (count: %zu)", __FUNCTION__, gnssSvNotification.count);
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (gnssCbIface != nullptr) {
+        IGnssCallback::GnssSvStatus svStatus;
+        convertGnssSvStatus(gnssSvNotification, svStatus);
+        auto r = gnssCbIface->gnssSvStatusCb(svStatus);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssSvStatusCb description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+void GnssAPIClient::onGnssNmeaCb(GnssNmeaNotification gnssNmeaNotification)
+{
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (gnssCbIface != nullptr) {
+        const std::string s(gnssNmeaNotification.nmea);
+        std::stringstream ss(s);
+        std::string each;
+        while(std::getline(ss, each, '\n')) {
+            each += '\n';
+            android::hardware::hidl_string nmeaString;
+            nmeaString.setToExternal(each.c_str(), each.length());
+            auto r = gnssCbIface->gnssNmeaCb(
+                    static_cast<V1_0::GnssUtcTime>(gnssNmeaNotification.timestamp), nmeaString);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssNmeaCb nmea=%s length=%zu description=%s", __func__,
+                            gnssNmeaNotification.nmea, gnssNmeaNotification.length,
+                            r.description().c_str());
+            }
+        }
+    }
+}
+
+void GnssAPIClient::onStartTrackingCb(LocationError error)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, error);
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (error == LOCATION_ERROR_SUCCESS && gnssCbIface != nullptr) {
+        auto r = gnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::ENGINE_ON);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssStatusCb ENGINE_ON description=%s",
+                __func__, r.description().c_str());
+        }
+        r = gnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::SESSION_BEGIN);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssStatusCb SESSION_BEGIN description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+void GnssAPIClient::onStopTrackingCb(LocationError error)
+{
+    LOC_LOGD("%s]: (%d)", __FUNCTION__, error);
+    mMutex.lock();
+    auto gnssCbIface(mGnssCbIface);
+    mMutex.unlock();
+
+    if (error == LOCATION_ERROR_SUCCESS && gnssCbIface != nullptr) {
+        auto r = gnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::SESSION_END);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssStatusCb SESSION_END description=%s",
+                __func__, r.description().c_str());
+        }
+        r = gnssCbIface->gnssStatusCb(IGnssCallback::GnssStatusValue::ENGINE_OFF);
+        if (!r.isOk()) {
+            LOC_LOGE("%s] Error from gnssStatusCb ENGINE_OFF description=%s",
+                __func__, r.description().c_str());
+        }
+    }
+}
+
+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>(V1_0::GnssMax::SVS_COUNT)) {
+        LOC_LOGW("%s]: Too many satellites %u. Clamps to %d.",
+                __FUNCTION__,  out.numSvs, V1_0::GnssMax::SVS_COUNT);
+        out.numSvs = static_cast<uint32_t>(V1_0::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.carrierFrequencyHz = in.gnssSvs[i].carrierFrequencyHz;
+        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;
+        if (in.gnssSvs[i].gnssSvOptionsMask & GNSS_SV_OPTIONS_HAS_CARRIER_FREQUENCY_BIT)
+            info.svFlag |= IGnssCallback::GnssSvFlags::HAS_CARRIER_FREQUENCY;
+    }
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/location_api/GnssAPIClient.h b/android/2.0/location_api/GnssAPIClient.h
new file mode 100644
index 0000000..a129cee
--- /dev/null
+++ b/android/2.0/location_api/GnssAPIClient.h
@@ -0,0 +1,108 @@
+/* Copyright (c) 2017-2019, 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 <mutex>
+#include <android/hardware/gnss/2.0/IGnss.h>
+//#include <android/hardware/gnss/1.1/IGnssCallback.h>
+#include <LocationAPIClientBase.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::sp;
+
+class GnssAPIClient : public LocationAPIClientBase
+{
+public:
+    GnssAPIClient(const sp<V1_0::IGnssCallback>& gpsCb,
+            const sp<V1_0::IGnssNiCallback>& niCb);
+    virtual ~GnssAPIClient();
+    GnssAPIClient(const GnssAPIClient&) = delete;
+    GnssAPIClient& operator=(const GnssAPIClient&) = delete;
+
+    // for GpsInterface
+    void gnssUpdateCallbacks(const sp<V1_0::IGnssCallback>& gpsCb,
+            const sp<V1_0::IGnssNiCallback>& niCb);
+    bool gnssStart();
+    bool gnssStop();
+    bool gnssSetPositionMode(V1_0::IGnss::GnssPositionMode mode,
+            V1_0::IGnss::GnssPositionRecurrence recurrence,
+            uint32_t minIntervalMs,
+            uint32_t preferredAccuracyMeters,
+            uint32_t preferredTimeMs,
+            GnssPowerMode powerMode = GNSS_POWER_MODE_INVALID,
+            uint32_t timeBetweenMeasurement = 0);
+
+    // for GpsNiInterface
+    void gnssNiRespond(int32_t notifId, V1_0::IGnssNiCallback::GnssUserResponseType userResponse);
+
+    // these apis using LocationAPIControlClient
+    void gnssDeleteAidingData(V1_0::IGnss::GnssAidingData aidingDataFlags);
+    void gnssEnable(LocationTechnologyType techType);
+    void gnssDisable();
+    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<V1_0::IGnssCallback> mGnssCbIface;
+    sp<V1_0::IGnssNiCallback> mGnssNiCbIface;
+    std::mutex mMutex;
+    LocationAPIControlClient* mControlClient;
+    LocationCapabilitiesMask mLocationCapabilitiesMask;
+    bool mLocationCapabilitiesCached;
+    TrackingOptions mTrackingOptions;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // GNSS_API_CLINET_H
diff --git a/android/2.0/location_api/LocationUtil.cpp b/android/2.0/location_api/LocationUtil.cpp
new file mode 100644
index 0000000..c921154
--- /dev/null
+++ b/android/2.0/location_api/LocationUtil.cpp
@@ -0,0 +1,206 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::GnssLocation;
+using ::android::hardware::gnss::V1_0::GnssConstellationType;
+using ::android::hardware::gnss::V1_0::GnssLocationFlags;
+
+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;
+        out.latitudeDegrees = in.latitude;
+        out.longitudeDegrees = in.longitude;
+    }
+    if (in.flags & LOCATION_HAS_ALTITUDE_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_ALTITUDE;
+        out.altitudeMeters = in.altitude;
+    }
+    if (in.flags & LOCATION_HAS_SPEED_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED;
+        out.speedMetersPerSec = in.speed;
+    }
+    if (in.flags & LOCATION_HAS_BEARING_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING;
+        out.bearingDegrees = in.bearing;
+    }
+    if (in.flags & LOCATION_HAS_ACCURACY_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_HORIZONTAL_ACCURACY;
+        out.horizontalAccuracyMeters = in.accuracy;
+    }
+    if (in.flags & LOCATION_HAS_VERTICAL_ACCURACY_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_VERTICAL_ACCURACY;
+        out.verticalAccuracyMeters = in.verticalAccuracy;
+    }
+    if (in.flags & LOCATION_HAS_SPEED_ACCURACY_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_SPEED_ACCURACY;
+        out.speedAccuracyMetersPerSecond = in.speedAccuracy;
+    }
+    if (in.flags & LOCATION_HAS_BEARING_ACCURACY_BIT) {
+        out.gnssLocationFlags |= GnssLocationFlags::HAS_BEARING_ACCURACY;
+        out.bearingAccuracyDegrees = in.bearingAccuracy;
+    }
+
+    out.timestamp = static_cast<V1_0::GnssUtcTime>(in.timestamp);
+}
+
+void convertGnssLocation(const GnssLocation& in, Location& out)
+{
+    memset(&out, 0, sizeof(out));
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_LAT_LONG) {
+        out.flags |= LOCATION_HAS_LAT_LONG_BIT;
+        out.latitude = in.latitudeDegrees;
+        out.longitude = in.longitudeDegrees;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_ALTITUDE) {
+        out.flags |= LOCATION_HAS_ALTITUDE_BIT;
+        out.altitude = in.altitudeMeters;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_SPEED) {
+        out.flags |= LOCATION_HAS_SPEED_BIT;
+        out.speed = in.speedMetersPerSec;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_BEARING) {
+        out.flags |= LOCATION_HAS_BEARING_BIT;
+        out.bearing = in.bearingDegrees;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_HORIZONTAL_ACCURACY) {
+        out.flags |= LOCATION_HAS_ACCURACY_BIT;
+        out.accuracy = in.horizontalAccuracyMeters;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_VERTICAL_ACCURACY) {
+        out.flags |= LOCATION_HAS_VERTICAL_ACCURACY_BIT;
+        out.verticalAccuracy = in.verticalAccuracyMeters;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_SPEED_ACCURACY) {
+        out.flags |= LOCATION_HAS_SPEED_ACCURACY_BIT;
+        out.speedAccuracy = in.speedAccuracyMetersPerSecond;
+    }
+    if (in.gnssLocationFlags & GnssLocationFlags::HAS_BEARING_ACCURACY) {
+        out.flags |= LOCATION_HAS_BEARING_ACCURACY_BIT;
+        out.bearingAccuracy = in.bearingAccuracyDegrees;
+    }
+
+    out.timestamp = static_cast<uint64_t>(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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/location_api/LocationUtil.h b/android/2.0/location_api/LocationUtil.h
new file mode 100644
index 0000000..c6f5ead
--- /dev/null
+++ b/android/2.0/location_api/LocationUtil.h
@@ -0,0 +1,55 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+void convertGnssLocation(Location& in, V1_0::GnssLocation& out);
+void convertGnssLocation(const V1_0::GnssLocation& in, Location& out);
+void convertGnssConstellationType(GnssSvType& in, V1_0::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 V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // LOCATION_UTIL_H
diff --git a/android/2.0/location_api/MeasurementAPIClient.cpp b/android/2.0/location_api/MeasurementAPIClient.cpp
new file mode 100644
index 0000000..d9cae18
--- /dev/null
+++ b/android/2.0/location_api/MeasurementAPIClient.cpp
@@ -0,0 +1,424 @@
+/* Copyright (c) 2017-2019, 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 V2_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssMeasurement;
+using ::android::hardware::gnss::V2_0::IGnssMeasurementCallback;
+
+static void convertGnssData(GnssMeasurementsNotification& in,
+        V1_0::IGnssMeasurementCallback::GnssData& out);
+static void convertGnssData_1_1(GnssMeasurementsNotification& in,
+        V1_1::IGnssMeasurementCallback::GnssData& out);
+static void convertGnssData_2_0(GnssMeasurementsNotification& in,
+        V2_0::IGnssMeasurementCallback::GnssData& out);
+static void convertGnssMeasurement(GnssMeasurementsData& in,
+        V1_0::IGnssMeasurementCallback::GnssMeasurement& out);
+static void convertGnssClock(GnssMeasurementsClock& in, IGnssMeasurementCallback::GnssClock& out);
+
+MeasurementAPIClient::MeasurementAPIClient() :
+    mGnssMeasurementCbIface(nullptr),
+    mGnssMeasurementCbIface_1_1(nullptr),
+    mGnssMeasurementCbIface_2_0(nullptr),
+    mTracking(false)
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+}
+
+MeasurementAPIClient::~MeasurementAPIClient()
+{
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+}
+
+// for GpsInterface
+Return<IGnssMeasurement::GnssMeasurementStatus>
+MeasurementAPIClient::measurementSetCallback(const sp<V1_0::IGnssMeasurementCallback>& callback)
+{
+    LOC_LOGD("%s]: (%p)", __FUNCTION__, &callback);
+
+    mMutex.lock();
+    mGnssMeasurementCbIface = callback;
+    mMutex.unlock();
+
+    return startTracking();
+}
+
+Return<IGnssMeasurement::GnssMeasurementStatus>
+MeasurementAPIClient::measurementSetCallback_1_1(
+        const sp<V1_1::IGnssMeasurementCallback>& callback,
+        GnssPowerMode powerMode, uint32_t timeBetweenMeasurement)
+{
+    LOC_LOGD("%s]: (%p) (powermode: %d) (tbm: %d)",
+            __FUNCTION__, &callback, (int)powerMode, timeBetweenMeasurement);
+
+    mMutex.lock();
+    mGnssMeasurementCbIface_1_1 = callback;
+    mMutex.unlock();
+
+    return startTracking(powerMode, timeBetweenMeasurement);
+}
+
+Return<IGnssMeasurement::GnssMeasurementStatus>
+MeasurementAPIClient::measurementSetCallback_2_0(
+    const sp<V2_0::IGnssMeasurementCallback>& callback,
+    GnssPowerMode powerMode, uint32_t timeBetweenMeasurement)
+{
+    LOC_LOGD("%s]: (%p) (powermode: %d) (tbm: %d)",
+        __FUNCTION__, &callback, (int)powerMode, timeBetweenMeasurement);
+
+    mMutex.lock();
+    mGnssMeasurementCbIface_2_0 = callback;
+    mMutex.unlock();
+
+    return startTracking(powerMode, timeBetweenMeasurement);
+}
+
+Return<IGnssMeasurement::GnssMeasurementStatus>
+MeasurementAPIClient::startTracking(
+        GnssPowerMode powerMode, uint32_t timeBetweenMeasurement)
+{
+    LocationCallbacks locationCallbacks;
+    memset(&locationCallbacks, 0, sizeof(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_2_0 != nullptr ||
+        mGnssMeasurementCbIface_1_1 != nullptr ||
+        mGnssMeasurementCbIface != nullptr) {
+        locationCallbacks.gnssMeasurementsCb =
+            [this](GnssMeasurementsNotification gnssMeasurementsNotification) {
+                onGnssMeasurementsCb(gnssMeasurementsNotification);
+            };
+    }
+
+    locAPISetCallbacks(locationCallbacks);
+
+    TrackingOptions options = {};
+    memset(&options, 0, sizeof(TrackingOptions));
+    options.size = sizeof(TrackingOptions);
+    options.minInterval = 1000;
+    options.mode = GNSS_SUPL_MODE_STANDALONE;
+    if (GNSS_POWER_MODE_INVALID != powerMode) {
+        options.powerMode = powerMode;
+        options.tbm = timeBetweenMeasurement;
+    }
+
+    mTracking = true;
+    LOC_LOGD("%s]: start tracking session", __FUNCTION__);
+    locAPIStartTracking(options);
+    return IGnssMeasurement::GnssMeasurementStatus::SUCCESS;
+}
+
+// for GpsMeasurementInterface
+void MeasurementAPIClient::measurementClose() {
+    LOC_LOGD("%s]: ()", __FUNCTION__);
+    mTracking = false;
+    locAPIStopTracking();
+}
+
+// callbacks
+void MeasurementAPIClient::onGnssMeasurementsCb(
+        GnssMeasurementsNotification gnssMeasurementsNotification)
+{
+    LOC_LOGD("%s]: (count: %zu active: %d)",
+            __FUNCTION__, gnssMeasurementsNotification.count, mTracking);
+    if (mTracking) {
+        mMutex.lock();
+        sp<V1_0::IGnssMeasurementCallback> gnssMeasurementCbIface = nullptr;
+        sp<V1_1::IGnssMeasurementCallback> gnssMeasurementCbIface_1_1 = nullptr;
+        sp<V2_0::IGnssMeasurementCallback> gnssMeasurementCbIface_2_0 = nullptr;
+        if (mGnssMeasurementCbIface_2_0 != nullptr) {
+            gnssMeasurementCbIface_2_0 = mGnssMeasurementCbIface_2_0;
+        } else if (mGnssMeasurementCbIface_1_1 != nullptr) {
+            gnssMeasurementCbIface_1_1 = mGnssMeasurementCbIface_1_1;
+        } else if (mGnssMeasurementCbIface != nullptr) {
+            gnssMeasurementCbIface = mGnssMeasurementCbIface;
+        }
+        mMutex.unlock();
+
+        if (gnssMeasurementCbIface_2_0 != nullptr) {
+            V2_0::IGnssMeasurementCallback::GnssData gnssData;
+            convertGnssData_2_0(gnssMeasurementsNotification, gnssData);
+            auto r = gnssMeasurementCbIface_2_0->gnssMeasurementCb_2_0(gnssData);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssMeasurementCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        } else if (gnssMeasurementCbIface_1_1 != nullptr) {
+            V1_1::IGnssMeasurementCallback::GnssData gnssData;
+            convertGnssData_1_1(gnssMeasurementsNotification, gnssData);
+            auto r = gnssMeasurementCbIface_1_1->gnssMeasurementCb(gnssData);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from gnssMeasurementCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        } else if (gnssMeasurementCbIface != nullptr) {
+            V1_0::IGnssMeasurementCallback::GnssData gnssData;
+            convertGnssData(gnssMeasurementsNotification, gnssData);
+            auto r = gnssMeasurementCbIface->GnssMeasurementCb(gnssData);
+            if (!r.isOk()) {
+                LOC_LOGE("%s] Error from GnssMeasurementCb description=%s",
+                    __func__, r.description().c_str());
+            }
+        }
+    }
+}
+
+static void convertGnssMeasurement(GnssMeasurementsData& in,
+        V1_0::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,
+        V1_0::IGnssMeasurementCallback::GnssData& out)
+{
+    out.measurementCount = in.count;
+    if (out.measurementCount > static_cast<uint32_t>(V1_0::GnssMax::SVS_COUNT)) {
+        LOC_LOGW("%s]: Too many measurement %u. Clamps to %d.",
+                __FUNCTION__,  out.measurementCount, V1_0::GnssMax::SVS_COUNT);
+        out.measurementCount = static_cast<uint32_t>(V1_0::GnssMax::SVS_COUNT);
+    }
+    for (size_t i = 0; i < out.measurementCount; i++) {
+        convertGnssMeasurement(in.measurements[i], out.measurements[i]);
+    }
+    convertGnssClock(in.clock, out.clock);
+}
+
+static void convertGnssData_1_1(GnssMeasurementsNotification& in,
+        V1_1::IGnssMeasurementCallback::GnssData& out)
+{
+    out.measurements.resize(in.count);
+    for (size_t i = 0; i < in.count; i++) {
+        convertGnssMeasurement(in.measurements[i], out.measurements[i].v1_0);
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_VALID_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_VALID;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_RESET_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_RESET;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_CYCLE_SLIP_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_CYCLE_SLIP;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_HALF_CYCLE_RESOLVED_BIT)
+            out.measurements[i].accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_HALF_CYCLE_RESOLVED;
+    }
+    convertGnssClock(in.clock, out.clock);
+}
+
+static void convertGnssData_2_0(GnssMeasurementsNotification& in,
+        V2_0::IGnssMeasurementCallback::GnssData& out)
+{
+    out.measurements.resize(in.count);
+    for (size_t i = 0; i < in.count; i++) {
+        convertGnssMeasurement(in.measurements[i], out.measurements[i].v1_1.v1_0);
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_VALID_BIT)
+            out.measurements[i].v1_1.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_VALID;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_RESET_BIT)
+            out.measurements[i].v1_1.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_RESET;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_CYCLE_SLIP_BIT)
+            out.measurements[i].v1_1.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_CYCLE_SLIP;
+        if (in.measurements[i].adrStateMask & GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_HALF_CYCLE_RESOLVED_BIT)
+            out.measurements[i].v1_1.accumulatedDeltaRangeState |=
+            IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_HALF_CYCLE_RESOLVED;
+
+//        out.measurements[i].codeType =
+//            static_cast<IGnssMeasurementCallback::GnssMeasurementCodeType>(in.measurements[i].codeType);
+//        out.measurements[i].otherCodeTypeName = in.measurements[i].otherCodeTypeName;
+
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_CODE_LOCK_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_CODE_LOCK;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_BIT_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BIT_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_SUBFRAME_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SUBFRAME_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_TOW_DECODED_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_TOW_DECODED;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_MSEC_AMBIGUOUS_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_MSEC_AMBIGUOUS;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_SYMBOL_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SYMBOL_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_GLO_STRING_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GLO_STRING_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_GLO_TOD_DECODED_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GLO_TOD_DECODED;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_BDS_D2_BIT_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BDS_D2_BIT_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_BDS_D2_SUBFRAME_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_BDS_D2_SUBFRAME_SYNC;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1BC_CODE_LOCK_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1BC_CODE_LOCK;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1C_2ND_CODE_LOCK_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1C_2ND_CODE_LOCK;
+        if (in.measurements[i].stateMask & GNSS_MEASUREMENTS_STATE_GAL_E1B_PAGE_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GAL_E1B_PAGE_SYNC;
+        if (in.measurements[i].stateMask &  GNSS_MEASUREMENTS_STATE_SBAS_SYNC_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_SBAS_SYNC;
+        if (in.measurements[i].stateMask &  GNSS_MEASUREMENTS_STATE_TOW_KNOWN_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_TOW_KNOWN;
+        if (in.measurements[i].stateMask &  GNSS_MEASUREMENTS_STATE_GLO_TOD_KNOWN_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_GLO_TOD_KNOWN;
+        if (in.measurements[i].stateMask &  GNSS_MEASUREMENTS_STATE_2ND_CODE_LOCK_BIT)
+            out.measurements[i].state |= IGnssMeasurementCallback::GnssMeasurementState::STATE_2ND_CODE_LOCK;
+    }
+    convertGnssClock(in.clock, out.clock);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/2.0/location_api/MeasurementAPIClient.h b/android/2.0/location_api/MeasurementAPIClient.h
new file mode 100644
index 0000000..4146a13
--- /dev/null
+++ b/android/2.0/location_api/MeasurementAPIClient.h
@@ -0,0 +1,89 @@
+/* Copyright (c) 2017-2019, 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 <mutex>
+#include <android/hardware/gnss/2.0/IGnssMeasurement.h>
+//#include <android/hardware/gnss/1.1/IGnssMeasurementCallback.h>
+#include <LocationAPIClientBase.h>
+#include <hidl/Status.h>
+#include <gps_extended_c.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::sp;
+
+class MeasurementAPIClient : public LocationAPIClientBase
+{
+public:
+    MeasurementAPIClient();
+    virtual ~MeasurementAPIClient();
+    MeasurementAPIClient(const MeasurementAPIClient&) = delete;
+    MeasurementAPIClient& operator=(const MeasurementAPIClient&) = delete;
+
+    // for GpsMeasurementInterface
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> measurementSetCallback(
+            const sp<V1_0::IGnssMeasurementCallback>& callback);
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> measurementSetCallback_1_1(
+            const sp<V1_1::IGnssMeasurementCallback>& callback,
+            GnssPowerMode powerMode = GNSS_POWER_MODE_INVALID,
+            uint32_t timeBetweenMeasurement = GPS_DEFAULT_FIX_INTERVAL_MS);
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> measurementSetCallback_2_0(
+            const sp<V2_0::IGnssMeasurementCallback>& callback,
+            GnssPowerMode powerMode = GNSS_POWER_MODE_INVALID,
+            uint32_t timeBetweenMeasurement = GPS_DEFAULT_FIX_INTERVAL_MS);
+    void measurementClose();
+    Return<IGnssMeasurement::GnssMeasurementStatus> startTracking(
+            GnssPowerMode powerMode = GNSS_POWER_MODE_INVALID,
+            uint32_t timeBetweenMeasurement = GPS_DEFAULT_FIX_INTERVAL_MS);
+
+    // callbacks we are interested in
+    void onGnssMeasurementsCb(GnssMeasurementsNotification gnssMeasurementsNotification) final;
+
+private:
+    std::mutex mMutex;
+    sp<V1_0::IGnssMeasurementCallback> mGnssMeasurementCbIface;
+    sp<V1_1::IGnssMeasurementCallback> mGnssMeasurementCbIface_1_1;
+    sp<V2_0::IGnssMeasurementCallback> mGnssMeasurementCbIface_2_0;
+
+    bool mTracking;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+#endif // MEASUREMENT_API_CLINET_H
diff --git a/android/2.0/service.cpp b/android/2.0/service.cpp
new file mode 100644
index 0000000..16f0b06
--- /dev/null
+++ b/android/2.0/service.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2017-2019, 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@2.0-service-qti"
+
+#include <android/hardware/gnss/2.0/IGnss.h>
+#include <hidl/LegacySupport.h>
+#include "loc_cfg.h"
+#include "loc_misc_utils.h"
+
+extern "C" {
+#include "vndfwk-detect.h"
+}
+
+#ifdef ARCH_ARM_32
+#define DEFAULT_HW_BINDER_MEM_SIZE 65536
+#endif
+
+using android::hardware::gnss::V2_0::IGnss;
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::registerPassthroughServiceImplementation;
+using android::hardware::joinRpcThreadpool;
+
+using android::status_t;
+using android::OK;
+
+typedef int vendorEnhancedServiceMain(int /* argc */, char* /* argv */ []);
+
+int main() {
+
+    ALOGI("%s", __FUNCTION__);
+
+    bool vendorEnhanced = isRunningWithVendorEnhancedFramework();
+    setVendorEnhanced(vendorEnhanced);
+
+#ifdef ARCH_ARM_32
+    android::hardware::ProcessState::initWithMmapSize((size_t)(DEFAULT_HW_BINDER_MEM_SIZE));
+#endif
+    configureRpcThreadpool(1, true);
+    status_t status;
+
+    status = registerPassthroughServiceImplementation<IGnss>();
+    if (status == OK) {
+        if (vendorEnhanced) {
+    #ifdef LOC_HIDL_VERSION
+            #define VENDOR_ENHANCED_LIB "vendor.qti.gnss@" LOC_HIDL_VERSION "-service.so"
+
+            void* libHandle = NULL;
+            vendorEnhancedServiceMain* vendorEnhancedMainMethod = (vendorEnhancedServiceMain*)
+                    dlGetSymFromLib(libHandle, VENDOR_ENHANCED_LIB, "main");
+            if (NULL != vendorEnhancedMainMethod) {
+                (*vendorEnhancedMainMethod)(0, NULL);
+            }
+    #else
+            ALOGE("LOC_HIDL_VERSION not defined.");
+    #endif
+        }
+
+        joinRpcThreadpool();
+
+    } else {
+        ALOGE("Error while registering IGnss 2.0 service: %d", status);
+    }
+
+    return 0;
+}
diff --git a/android/Android.mk b/android/Android.mk
index bff117e..f117def 100644
--- a/android/Android.mk
+++ b/android/Android.mk
@@ -1,10 +1,14 @@
 LOCAL_PATH := $(call my-dir)
 ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifeq ($(GNSS_HIDL_VERSION),2.0)
+include $(LOCAL_PATH)/2.0/Android.mk
+else
 ifeq ($(GNSS_HIDL_VERSION),1.1)
 include $(LOCAL_PATH)/1.1/Android.mk
 else
 include $(LOCAL_PATH)/1.0/Android.mk
-endif
+endif #GNSS HIDL 1.1
+endif #GNSS HIDL 2.0
 else #QMAA flag set, build dummy android.hardware.gnss@1.0-impl-qti
 include $(LOCAL_PATH)/dummy/Android.mk
 endif #BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/android/dummy/Android.mk b/android/dummy/Android.mk
index d438888..05114e1 100644
--- a/android/dummy/Android.mk
+++ b/android/dummy/Android.mk
@@ -1,9 +1,9 @@
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
-#build dummy android.hardware.gnss@1.0-impl-qti
+#build dummy android.hardware.gnss@2.0-impl-qti
 include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.gnss@1.0-impl-qti
+LOCAL_MODULE := android.hardware.gnss@2.0-impl-qti
 LOCAL_VENDOR_MODULE := true
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_SRC_FILES := GnssDummy.cpp
@@ -20,19 +20,11 @@ LOCAL_SHARED_LIBRARIES := \
 LOCAL_CFLAGS += $(GNSS_CFLAGS)
 include $(BUILD_SHARED_LIBRARY)
 
-BUILD_GNSS_HIDL_SERVICE := true
-ifneq ($(BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET), true)
-ifneq ($(LW_FEATURE_SET),true)
-#BUILD_GNSS_HIDL_SERVICE := false
-endif # LW_FEATURE_SET
-endif # BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET
-
-ifeq ($(BUILD_GNSS_HIDL_SERVICE), true)
 include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.gnss@1.0-service-qti
+LOCAL_MODULE := android.hardware.gnss@2.0-service-qti
 LOCAL_VENDOR_MODULE := true
 LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_INIT_RC := android.hardware.gnss@1.0-service-qti.rc
+LOCAL_INIT_RC := android.hardware.gnss@2.0-service-qti.rc
 LOCAL_SRC_FILES := \
     serviceDummy.cpp \
 
@@ -60,4 +52,3 @@ LOCAL_SHARED_LIBRARIES += \
 
 LOCAL_CFLAGS += $(GNSS_CFLAGS)
 include $(BUILD_EXECUTABLE)
-endif # BUILD_GNSS_HIDL_SERVICE
diff --git a/android/dummy/android.hardware.gnss@2.0-service-qti.rc b/android/dummy/android.hardware.gnss@2.0-service-qti.rc
new file mode 100644
index 0000000..36ee47c
--- /dev/null
+++ b/android/dummy/android.hardware.gnss@2.0-service-qti.rc
@@ -0,0 +1,4 @@
+service gnss_service /vendor/bin/hw/android.hardware.gnss@2.0-service-qti
+    class hal
+    user gps
+    group system gps radio
diff --git a/android/measurement_corrections/1.0/MeasurementCorrections.cpp b/android/measurement_corrections/1.0/MeasurementCorrections.cpp
new file mode 100644
index 0000000..c1a335a
--- /dev/null
+++ b/android/measurement_corrections/1.0/MeasurementCorrections.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2019, 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_MeasurementCorrectionsInterface"
+
+#include <log_util.h>
+#include "MeasurementCorrections.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace measurement_corrections {
+namespace V1_0 {
+namespace implementation {
+
+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;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+
+MeasurementCorrections::MeasurementCorrections() {
+}
+
+MeasurementCorrections::~MeasurementCorrections() {
+}
+
+Return<bool> MeasurementCorrections::setCorrections(const ::android::hardware::gnss::measurement_corrections::V1_0::MeasurementCorrections& corrections) {
+    return true;
+}
+
+Return<bool> MeasurementCorrections::setCallback(const sp<IMeasurementCorrectionsCallback>& callback) {
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace measurement_corrections
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/measurement_corrections/1.0/MeasurementCorrections.h b/android/measurement_corrections/1.0/MeasurementCorrections.h
new file mode 100644
index 0000000..ad534dc
--- /dev/null
+++ b/android/measurement_corrections/1.0/MeasurementCorrections.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2019, 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 ANDROID_HARDWARE_GNSS_V1_0_MeasurementCorrections_H
+#define ANDROID_HARDWARE_GNSS_V1_0_MeasurementCorrections_H
+
+#include <android/hardware/gnss/measurement_corrections/1.0/IMeasurementCorrections.h>
+#include <android/hardware/gnss/measurement_corrections/1.0/IMeasurementCorrectionsCallback.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include <location_interface.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace measurement_corrections {
+namespace V1_0 {
+namespace implementation {
+
+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;
+using ::android::hardware::gnss::V1_0::GnssLocation;
+using ::android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrectionsCallback;
+
+struct MeasurementCorrections : public IMeasurementCorrections {
+    MeasurementCorrections();
+    ~MeasurementCorrections();
+
+// Methods from ::android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrections follow.
+Return<bool> setCorrections(const ::android::hardware::gnss::measurement_corrections::V1_0::MeasurementCorrections& corrections) override;
+
+Return<bool> setCallback(const sp<IMeasurementCorrectionsCallback>& callback) override;
+
+};
+
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace measurement_corrections
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_0_MeasurementCorrections_H
diff --git a/android/visibility_control/1.0/GnssVisibilityControl.cpp b/android/visibility_control/1.0/GnssVisibilityControl.cpp
new file mode 100644
index 0000000..82e465c
--- /dev/null
+++ b/android/visibility_control/1.0/GnssVisibilityControl.cpp
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2019, 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 <android/hardware/gnss/visibility_control/1.0/IGnssVisibilityControl.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include "GnssVisibilityControl.h"
+#include <location_interface.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace visibility_control {
+namespace V1_0 {
+namespace implementation {
+
+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;
+
+static GnssVisibilityControl* spGnssVisibilityControl = nullptr;
+
+static void convertGnssNfwNotification(GnssNfwNotification& in,
+    IGnssVisibilityControlCallback::NfwNotification& out);
+
+GnssVisibilityControl::GnssVisibilityControl(Gnss* gnss) : mGnss(gnss) {
+    spGnssVisibilityControl = this;
+}
+GnssVisibilityControl::~GnssVisibilityControl() {
+    spGnssVisibilityControl = nullptr;
+}
+
+void GnssVisibilityControl::nfwStatusCb(GnssNfwNotification notification) {
+    if (nullptr != spGnssVisibilityControl) {
+        spGnssVisibilityControl->statusCb(notification);
+    }
+}
+
+static void convertGnssNfwNotification(GnssNfwNotification& in,
+    IGnssVisibilityControlCallback::NfwNotification& out)
+{
+    memset(&out, 0, sizeof(IGnssVisibilityControlCallback::NfwNotification));
+    out.proxyAppPackageName = in.proxyAppPackageName;
+    out.protocolStack = (IGnssVisibilityControlCallback::NfwProtocolStack)in.protocolStack;
+    out.otherProtocolStackName = in.otherProtocolStackName;
+    out.requestor = (IGnssVisibilityControlCallback::NfwRequestor)in.requestor;
+    out.requestorId = in.requestorId;
+    out.responseType = (IGnssVisibilityControlCallback::NfwResponseType)in.responseType;
+    out.inEmergencyMode = in.inEmergencyMode;
+    out.isCachedLocation = in.isCachedLocation;
+}
+
+void GnssVisibilityControl::statusCb(GnssNfwNotification notification) {
+
+    if (mGnssVisibilityControlCbIface != nullptr) {
+        IGnssVisibilityControlCallback::NfwNotification nfwNotification;
+
+        // Convert from one structure to another
+        convertGnssNfwNotification(notification, nfwNotification);
+
+        auto r = mGnssVisibilityControlCbIface->nfwNotifyCb(nfwNotification);
+        if (!r.isOk()) {
+            LOC_LOGw("Error invoking NFW status cb %s", r.description().c_str());
+        }
+    } else {
+        LOC_LOGw("setCallback has not been called yet");
+    }
+}
+
+// Methods from ::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControl follow.
+Return<bool> GnssVisibilityControl::enableNfwLocationAccess(const hidl_vec<::android::hardware::hidl_string>& proxyApps) {
+
+    if (nullptr == mGnss || nullptr == mGnss->getGnssInterface()) {
+        LOC_LOGe("Null GNSS interface");
+        return false;
+    }
+
+    /* If the vector is empty we need to disable all NFW clients
+       If there is at least one app in the vector we need to enable
+       all NFW clients */
+    if (0 == proxyApps.size()) {
+        mGnss->getGnssInterface()->enableNfwLocationAccess(false);
+    } else {
+        mGnss->getGnssInterface()->enableNfwLocationAccess(true);
+    }
+
+    return true;
+}
+/**
+ * Registers the callback for HAL implementation to use.
+ *
+ * @param callback Handle to IGnssVisibilityControlCallback interface.
+ */
+Return<bool> GnssVisibilityControl::setCallback(const ::android::sp<::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControlCallback>& callback) {
+
+    if (nullptr == mGnss || nullptr == mGnss->getGnssInterface()) {
+        LOC_LOGe("Null GNSS interface");
+        return false;
+    }
+    mGnssVisibilityControlCbIface = callback;
+
+    NfwCbInfo cbInfo = {};
+    cbInfo.visibilityControlCb = (void*)nfwStatusCb;
+
+    mGnss->getGnssInterface()->nfwInit(cbInfo);
+
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace visibility_control
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/android/visibility_control/1.0/GnssVisibilityControl.h b/android/visibility_control/1.0/GnssVisibilityControl.h
new file mode 100644
index 0000000..4eaea51
--- /dev/null
+++ b/android/visibility_control/1.0/GnssVisibilityControl.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2019, 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 ANDROID_HARDWARE_GNSS_V1_0_GnssVisibilityControl_H
+#define ANDROID_HARDWARE_GNSS_V1_0_GnssVisibilityControl_H
+
+#include <android/hardware/gnss/visibility_control/1.0/IGnssVisibilityControl.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+#include <gps_extended_c.h>
+#include <location_interface.h>
+#include "Gnss.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace visibility_control {
+namespace V1_0 {
+namespace implementation {
+
+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;
+using ::android::hardware::gnss::V2_0::implementation::Gnss;
+
+struct GnssVisibilityControl : public IGnssVisibilityControl {
+    GnssVisibilityControl(Gnss* gnss);
+    ~GnssVisibilityControl();
+
+    // Methods from ::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControl follow.
+    Return<bool> enableNfwLocationAccess(const hidl_vec<::android::hardware::hidl_string>& proxyApps) override;
+    /**
+     * Registers the callback for HAL implementation to use.
+     *
+     * @param callback Handle to IGnssVisibilityControlCallback interface.
+     */
+    Return<bool> setCallback(const ::android::sp<::android::hardware::gnss::visibility_control::V1_0::IGnssVisibilityControlCallback>& callback) override;
+
+    void statusCb(GnssNfwNotification notification);
+
+    /* Data call setup callback passed down to GNSS HAL implementation */
+    static void nfwStatusCb(GnssNfwNotification notification);
+
+private:
+    Gnss* mGnss = nullptr;
+    sp<IGnssVisibilityControlCallback> mGnssVisibilityControlCbIface = nullptr;
+};
+
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace visibility_control
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V1_0_GnssVisibilityControl_H
diff --git a/batching/Android.mk b/batching/Android.mk
new file mode 100644
index 0000000..b08d155
--- /dev/null
+++ b/batching/Android.mk
@@ -0,0 +1,37 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libbatching
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SHARED_LIBRARIES := \
+    libutils \
+    libcutils \
+    liblog \
+    libloc_core \
+    libgps.utils \
+    libdl \
+    liblbs_core
+
+LOCAL_SRC_FILES += \
+    location_batching.cpp \
+    BatchingAdapter.cpp
+
+LOCAL_HEADER_LIBRARIES := \
+    libgps.utils_headers \
+    libloc_core_headers \
+    libloc_pla_headers \
+    liblocation_api_headers
+
+LOCAL_PRELINK_MODULE := false
+
+LOCAL_CFLAGS += $(GNSS_CFLAGS)
+include $(BUILD_SHARED_LIBRARY)
+
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
diff --git a/batching/BatchingAdapter.cpp b/batching/BatchingAdapter.cpp
new file mode 100644
index 0000000..135f0ed
--- /dev/null
+++ b/batching/BatchingAdapter.cpp
@@ -0,0 +1,1050 @@
+/* Copyright (c) 2017-2019, 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_BatchingAdapter"
+
+#include <loc_pla.h>
+#include <log_util.h>
+#include <LocContext.h>
+#include <BatchingAdapter.h>
+
+using namespace loc_core;
+
+BatchingAdapter::BatchingAdapter() :
+    LocAdapterBase(0,
+                    LocContext::getLocContext(
+                        NULL,
+                        NULL,
+                        LocContext::mLocationHalName,
+                        false)),
+    mOngoingTripDistance(0),
+    mOngoingTripTBFInterval(0),
+    mTripWithOngoingTBFDropped(false),
+    mTripWithOngoingTripDistanceDropped(false),
+    mBatchingTimeout(0),
+    mBatchingAccuracy(1),
+    mBatchSize(0),
+    mTripBatchSize(0)
+{
+    LOC_LOGD("%s]: Constructor", __func__);
+    readConfigCommand();
+    setConfigCommand();
+}
+
+void
+BatchingAdapter::readConfigCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgReadConfig : public LocMsg {
+        BatchingAdapter& mAdapter;
+        inline MsgReadConfig(BatchingAdapter& adapter) :
+            LocMsg(),
+            mAdapter(adapter) {}
+        inline virtual void proc() const {
+            uint32_t batchingTimeout = 0;
+            uint32_t batchingAccuracy = 0;
+            uint32_t batchSize = 0;
+            uint32_t tripBatchSize = 0;
+            static const loc_param_s_type flp_conf_param_table[] =
+            {
+                {"BATCH_SIZE", &batchSize, NULL, 'n'},
+                {"OUTDOOR_TRIP_BATCH_SIZE", &tripBatchSize, NULL, 'n'},
+                {"BATCH_SESSION_TIMEOUT", &batchingTimeout, NULL, 'n'},
+                {"ACCURACY", &batchingAccuracy, NULL, 'n'},
+            };
+            UTIL_READ_CONF(LOC_PATH_FLP_CONF, flp_conf_param_table);
+
+            LOC_LOGD("%s]: batchSize %u tripBatchSize %u batchingAccuracy %u batchingTimeout %u ",
+                     __func__, batchSize, tripBatchSize, batchingAccuracy, batchingTimeout);
+
+             mAdapter.setBatchSize(batchSize);
+             mAdapter.setTripBatchSize(tripBatchSize);
+             mAdapter.setBatchingTimeout(batchingTimeout);
+             mAdapter.setBatchingAccuracy(batchingAccuracy);
+        }
+    };
+
+    sendMsg(new MsgReadConfig(*this));
+
+}
+
+void
+BatchingAdapter::setConfigCommand()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgSetConfig : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgSetConfig(BatchingAdapter& adapter,
+                            LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        inline virtual void proc() const {
+            mApi.setBatchSize(mAdapter.getBatchSize());
+            mApi.setTripBatchSize(mAdapter.getTripBatchSize());
+        }
+    };
+
+    sendMsg(new MsgSetConfig(*this, *mLocApi));
+}
+
+void
+BatchingAdapter::stopClientSessions(LocationAPI* client)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+    typedef struct pairKeyBatchMode {
+        LocationAPI* client;
+        uint32_t id;
+        BatchingMode batchingMode;
+        inline pairKeyBatchMode(LocationAPI* _client, uint32_t _id, BatchingMode _bMode) :
+            client(_client), id(_id), batchingMode(_bMode) {}
+    } pairKeyBatchMode;
+    std::vector<pairKeyBatchMode> vBatchingClient;
+    for (auto it : mBatchingSessions) {
+        if (client == it.first.client) {
+            vBatchingClient.emplace_back(it.first.client, it.first.id, it.second.batchingMode);
+        }
+    }
+    for (auto keyBatchingMode : vBatchingClient) {
+        if (keyBatchingMode.batchingMode != BATCHING_MODE_TRIP) {
+            stopBatching(keyBatchingMode.client, keyBatchingMode.id);
+        } else {
+            stopTripBatchingMultiplex(keyBatchingMode.client, keyBatchingMode.id);
+        }
+    }
+}
+
+void
+BatchingAdapter::updateClientsEventMask()
+{
+    LOC_API_ADAPTER_EVENT_MASK_T mask = 0;
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        // we don't register LOC_API_ADAPTER_BIT_BATCH_FULL until we
+        // start batching with ROUTINE or TRIP option
+        if (it->second.batchingCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_BATCH_STATUS;
+        }
+    }
+    if (autoReportBatchingSessionsCount() > 0) {
+        mask |= LOC_API_ADAPTER_BIT_BATCH_FULL;
+    }
+    updateEvtMask(mask, LOC_REGISTRATION_MASK_SET);
+}
+
+void
+BatchingAdapter::handleEngineUpEvent()
+{
+    struct MsgSSREvent : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        inline MsgSSREvent(BatchingAdapter& adapter,
+                           LocApiBase& api) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api) {}
+        virtual void proc() const {
+            mAdapter.setEngineCapabilitiesKnown(true);
+            mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
+            mApi.setBatchSize(mAdapter.getBatchSize());
+            mApi.setTripBatchSize(mAdapter.getTripBatchSize());
+            mAdapter.restartSessions();
+            for (auto msg: mAdapter.mPendingMsgs) {
+                mAdapter.sendMsg(msg);
+            }
+            mAdapter.mPendingMsgs.clear();
+        }
+    };
+
+    sendMsg(new MsgSSREvent(*this, *mLocApi));
+}
+
+void
+BatchingAdapter::restartSessions()
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    if (autoReportBatchingSessionsCount() > 0) {
+        updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                      LOC_REGISTRATION_MASK_ENABLED);
+    }
+    for (auto it = mBatchingSessions.begin();
+              it != mBatchingSessions.end(); ++it) {
+        if (it->second.batchingMode != BATCHING_MODE_TRIP) {
+            mLocApi->startBatching(it->first.id, it->second,
+                                    getBatchingAccuracy(), getBatchingTimeout(),
+                                    new LocApiResponse(*getContext(),
+                                    [] (LocationError /*err*/) {}));
+        }
+    }
+
+    if (mTripSessions.size() > 0) {
+        // restart outdoor trip batching session if any.
+        mOngoingTripDistance = 0;
+        mOngoingTripTBFInterval = 0;
+
+        // record the min trip distance and min tbf interval of all ongoing sessions
+        for (auto tripSession : mTripSessions) {
+
+            TripSessionStatus &tripSessStatus = tripSession.second;
+
+            if ((0 == mOngoingTripDistance) ||
+                (mOngoingTripDistance >
+                 (tripSessStatus.tripDistance - tripSessStatus.accumulatedDistanceThisTrip))) {
+                mOngoingTripDistance = tripSessStatus.tripDistance -
+                    tripSessStatus.accumulatedDistanceThisTrip;
+            }
+
+            if ((0 == mOngoingTripTBFInterval) ||
+                (mOngoingTripTBFInterval > tripSessStatus.tripTBFInterval)) {
+                mOngoingTripTBFInterval = tripSessStatus.tripTBFInterval;
+            }
+
+            // reset the accumulatedDistanceOngoingBatch for each session
+            tripSessStatus.accumulatedDistanceOngoingBatch = 0;
+
+        }
+
+        mLocApi->startOutdoorTripBatching(mOngoingTripDistance, mOngoingTripTBFInterval,
+                getBatchingTimeout(), new LocApiResponse(*getContext(), [this] (LocationError err) {
+            if (LOCATION_ERROR_SUCCESS != err) {
+                mOngoingTripDistance = 0;
+                mOngoingTripTBFInterval = 0;
+            }
+            printTripReport();
+        }));
+    }
+}
+
+bool
+BatchingAdapter::hasBatchingCallback(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    return (it != mClientData.end() && it->second.batchingCb);
+}
+
+bool
+BatchingAdapter::isBatchingSession(LocationAPI* client, uint32_t sessionId)
+{
+    LocationSessionKey key(client, sessionId);
+    return (mBatchingSessions.find(key) != mBatchingSessions.end());
+}
+
+bool
+BatchingAdapter::isTripSession(uint32_t sessionId) {
+    return (mTripSessions.find(sessionId) != mTripSessions.end());
+}
+
+void
+BatchingAdapter::saveBatchingSession(LocationAPI* client, uint32_t sessionId,
+        const BatchingOptions& batchingOptions)
+{
+    LocationSessionKey key(client, sessionId);
+    mBatchingSessions[key] = batchingOptions;
+}
+
+void
+BatchingAdapter::eraseBatchingSession(LocationAPI* client, uint32_t sessionId)
+{
+    LocationSessionKey key(client, sessionId);
+    auto it = mBatchingSessions.find(key);
+    if (it != mBatchingSessions.end()) {
+        mBatchingSessions.erase(it);
+    }
+}
+
+void
+BatchingAdapter::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_LOGE("%s]: client %p id %u not found in data", __func__, client, sessionId);
+    }
+}
+
+uint32_t
+BatchingAdapter::autoReportBatchingSessionsCount()
+{
+    uint32_t count = 0;
+    for (auto batchingSession: mBatchingSessions) {
+        if (batchingSession.second.batchingMode != BATCHING_MODE_NO_AUTO_REPORT) {
+            count++;
+        }
+    }
+    count += mTripSessions.size();
+    return count;
+}
+
+uint32_t
+BatchingAdapter::startBatchingCommand(
+        LocationAPI* client, BatchingOptions& batchOptions)
+{
+    uint32_t sessionId = generateSessionId();
+    LOC_LOGD("%s]: client %p id %u minInterval %u minDistance %u mode %u Batching Mode %d",
+             __func__, client, sessionId, batchOptions.minInterval, batchOptions.minDistance,
+             batchOptions.mode,batchOptions.batchingMode);
+
+    struct MsgStartBatching : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        BatchingOptions mBatchingOptions;
+        inline MsgStartBatching(BatchingAdapter& adapter,
+                               LocApiBase& api,
+                               LocationAPI* client,
+                               uint32_t sessionId,
+                               BatchingOptions batchOptions) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId),
+            mBatchingOptions(batchOptions) {}
+        inline virtual void proc() const {
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgStartBatching(*this));
+                return;
+            }
+            LocationError err = LOCATION_ERROR_SUCCESS;
+
+            if (!mAdapter.hasBatchingCallback(mClient)) {
+                err = LOCATION_ERROR_CALLBACK_MISSING;
+            } else if (0 == mBatchingOptions.size) {
+                err = LOCATION_ERROR_INVALID_PARAMETER;
+            } else if (!ContextBase::isMessageSupported(
+                       LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING)) {
+                err = LOCATION_ERROR_NOT_SUPPORTED;
+            }
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (mBatchingOptions.batchingMode == BATCHING_MODE_ROUTINE ||
+                    mBatchingOptions.batchingMode == BATCHING_MODE_NO_AUTO_REPORT) {
+                    mAdapter.startBatching(mClient, mSessionId, mBatchingOptions);
+                } else if (mBatchingOptions.batchingMode == BATCHING_MODE_TRIP) {
+                    mAdapter.startTripBatchingMultiplex(mClient, mSessionId, mBatchingOptions);
+                } else {
+                    mAdapter.reportResponse(mClient, LOCATION_ERROR_INVALID_PARAMETER, mSessionId);
+                }
+            }
+        }
+    };
+
+    sendMsg(new MsgStartBatching(*this, *mLocApi, client, sessionId, batchOptions));
+
+    return sessionId;
+}
+
+void
+BatchingAdapter::startBatching(LocationAPI* client, uint32_t sessionId,
+        const BatchingOptions& batchingOptions)
+{
+    if (batchingOptions.batchingMode != BATCHING_MODE_NO_AUTO_REPORT &&
+        0 == autoReportBatchingSessionsCount()) {
+        // if there is currenty no batching sessions interested in batch full event, then this
+        // new session will need to register for batch full event
+        updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                      LOC_REGISTRATION_MASK_ENABLED);
+    }
+
+    // Assume start will be OK, remove session if not
+    saveBatchingSession(client, sessionId, batchingOptions);
+    mLocApi->startBatching(sessionId, batchingOptions, getBatchingAccuracy(), getBatchingTimeout(),
+            new LocApiResponse(*getContext(),
+            [this, client, sessionId, batchingOptions] (LocationError err) {
+        if (LOCATION_ERROR_SUCCESS != err) {
+            eraseBatchingSession(client, sessionId);
+        }
+
+        if (LOCATION_ERROR_SUCCESS != err &&
+            batchingOptions.batchingMode != BATCHING_MODE_NO_AUTO_REPORT &&
+            0 == autoReportBatchingSessionsCount()) {
+            // if we fail to start batching and we have already registered batch full event
+            // we need to undo that since no sessions are now interested in batch full event
+            updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                          LOC_REGISTRATION_MASK_DISABLED);
+        }
+
+        reportResponse(client, err, sessionId);
+    }));
+}
+
+void
+BatchingAdapter::updateBatchingOptionsCommand(LocationAPI* client, uint32_t id,
+        BatchingOptions& batchOptions)
+{
+    LOC_LOGD("%s]: client %p id %u minInterval %u minDistance %u mode %u batchMode %u",
+             __func__, client, id, batchOptions.minInterval,
+             batchOptions.minDistance, batchOptions.mode,
+             batchOptions.batchingMode);
+
+    struct MsgUpdateBatching : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        BatchingOptions mBatchOptions;
+        inline MsgUpdateBatching(BatchingAdapter& adapter,
+                                LocApiBase& api,
+                                LocationAPI* client,
+                                uint32_t sessionId,
+                                BatchingOptions batchOptions) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId),
+            mBatchOptions(batchOptions) {}
+        inline virtual void proc() const {
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgUpdateBatching(*this));
+                return;
+            }
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            if (!mAdapter.isBatchingSession(mClient, mSessionId)) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            } else if ((0 == mBatchOptions.size) ||
+                       (mBatchOptions.batchingMode > BATCHING_MODE_NO_AUTO_REPORT)) {
+                err = LOCATION_ERROR_INVALID_PARAMETER;
+            }
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (!mAdapter.isTripSession(mSessionId)) {
+                    mAdapter.stopBatching(mClient, mSessionId, true, mBatchOptions);
+                } else {
+                    mAdapter.stopTripBatchingMultiplex(mClient, mSessionId, true, mBatchOptions);
+                }
+           }
+        }
+    };
+
+    sendMsg(new MsgUpdateBatching(*this, *mLocApi, client, id, batchOptions));
+}
+
+void
+BatchingAdapter::stopBatchingCommand(LocationAPI* client, uint32_t id)
+{
+    LOC_LOGD("%s]: client %p id %u", __func__, client, id);
+
+    struct MsgStopBatching : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        inline MsgStopBatching(BatchingAdapter& adapter,
+                               LocApiBase& api,
+                               LocationAPI* client,
+                               uint32_t sessionId) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId) {}
+        inline virtual void proc() const {
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgStopBatching(*this));
+                return;
+            }
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            if (!mAdapter.isBatchingSession(mClient, mSessionId)) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            }
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (mAdapter.isTripSession(mSessionId)) {
+                    mAdapter.stopTripBatchingMultiplex(mClient, mSessionId);
+                } else {
+                    mAdapter.stopBatching(mClient, mSessionId);
+                }
+            }
+        }
+    };
+
+    sendMsg(new MsgStopBatching(*this, *mLocApi, client, id));
+}
+
+void
+BatchingAdapter::stopBatching(LocationAPI* client, uint32_t sessionId, bool restartNeeded,
+        const BatchingOptions& batchOptions)
+{
+    LocationSessionKey key(client, sessionId);
+    auto it = mBatchingSessions.find(key);
+    if (it != mBatchingSessions.end()) {
+        auto flpOptions = it->second;
+        // Assume stop will be OK, restore session if not
+        eraseBatchingSession(client, sessionId);
+        mLocApi->stopBatching(sessionId,
+                new LocApiResponse(*getContext(),
+                [this, client, sessionId, flpOptions, restartNeeded, batchOptions]
+                (LocationError err) {
+            if (LOCATION_ERROR_SUCCESS != err) {
+                saveBatchingSession(client, sessionId, batchOptions);
+            } else {
+                // if stopBatching is success, unregister for batch full event if this was the last
+                // batching session that is interested in batch full event
+                if (0 == autoReportBatchingSessionsCount() &&
+                    flpOptions.batchingMode != BATCHING_MODE_NO_AUTO_REPORT) {
+                    updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                                  LOC_REGISTRATION_MASK_DISABLED);
+                }
+
+                if (restartNeeded) {
+                    if (batchOptions.batchingMode == BATCHING_MODE_ROUTINE ||
+                            batchOptions.batchingMode == BATCHING_MODE_NO_AUTO_REPORT) {
+                        startBatching(client, sessionId, batchOptions);
+                    } else if (batchOptions.batchingMode == BATCHING_MODE_TRIP) {
+                        startTripBatchingMultiplex(client, sessionId, batchOptions);
+                    }
+                }
+            }
+            reportResponse(client, err, sessionId);
+        }));
+    }
+}
+
+void
+BatchingAdapter::getBatchedLocationsCommand(LocationAPI* client, uint32_t id, size_t count)
+{
+    LOC_LOGD("%s]: client %p id %u count %zu", __func__, client, id, count);
+
+    struct MsgGetBatchedLocations : public LocMsg {
+        BatchingAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        uint32_t mSessionId;
+        size_t mCount;
+        inline MsgGetBatchedLocations(BatchingAdapter& adapter,
+                                     LocApiBase& api,
+                                     LocationAPI* client,
+                                     uint32_t sessionId,
+                                     size_t count) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mSessionId(sessionId),
+            mCount(count) {}
+        inline virtual void proc() const {
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgGetBatchedLocations(*this));
+                return;
+            }
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            if (!mAdapter.hasBatchingCallback(mClient)) {
+                err = LOCATION_ERROR_CALLBACK_MISSING;
+            } else if (!mAdapter.isBatchingSession(mClient, mSessionId)) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            }
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (mAdapter.isTripSession(mSessionId)) {
+                    mApi.getBatchedTripLocations(mCount, 0,
+                            new LocApiResponse(*mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId,
+                            mClient = mClient] (LocationError err) {
+                        mAdapter.reportResponse(mClient, err, mSessionId);
+                    }));
+                } else {
+                    mApi.getBatchedLocations(mCount, new LocApiResponse(*mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId,
+                            mClient = mClient] (LocationError err) {
+                        mAdapter.reportResponse(mClient, err, mSessionId);
+                    }));
+                }
+            } else {
+                mAdapter.reportResponse(mClient, err, mSessionId);
+            }
+        }
+    };
+
+    sendMsg(new MsgGetBatchedLocations(*this, *mLocApi, client, id, count));
+}
+
+void
+BatchingAdapter::reportLocationsEvent(const Location* locations, size_t count,
+        BatchingMode batchingMode)
+{
+    LOC_LOGD("%s]: count %zu batchMode %d", __func__, count, batchingMode);
+
+    struct MsgReportLocations : public LocMsg {
+        BatchingAdapter& mAdapter;
+        Location* mLocations;
+        size_t mCount;
+        BatchingMode mBatchingMode;
+        inline MsgReportLocations(BatchingAdapter& adapter,
+                                  const Location* locations,
+                                  size_t count,
+                                  BatchingMode batchingMode) :
+            LocMsg(),
+            mAdapter(adapter),
+            mLocations(new Location[count]),
+            mCount(count),
+            mBatchingMode(batchingMode)
+        {
+            if (nullptr == mLocations) {
+                LOC_LOGE("%s]: new failed to allocate mLocations", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                mLocations[i] = locations[i];
+            }
+        }
+        inline virtual ~MsgReportLocations() {
+            if (nullptr != mLocations)
+                delete[] mLocations;
+        }
+        inline virtual void proc() const {
+            mAdapter.reportLocations(mLocations, mCount, mBatchingMode);
+        }
+    };
+
+    sendMsg(new MsgReportLocations(*this, locations, count, batchingMode));
+}
+
+void
+BatchingAdapter::reportLocations(Location* locations, size_t count, BatchingMode batchingMode)
+{
+    BatchingOptions batchOptions = {sizeof(BatchingOptions), batchingMode};
+
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.batchingCb) {
+            it->second.batchingCb(count, locations, batchOptions);
+        }
+    }
+}
+
+void
+BatchingAdapter::reportCompletedTripsEvent(uint32_t accumulated_distance)
+{
+    struct MsgReportCompletedTrips : public LocMsg {
+        BatchingAdapter& mAdapter;
+        uint32_t mAccumulatedDistance;
+        inline MsgReportCompletedTrips(BatchingAdapter& adapter,
+                                  uint32_t accumulated_distance) :
+            LocMsg(),
+            mAdapter(adapter),
+            mAccumulatedDistance(accumulated_distance)
+        {
+        }
+        inline virtual ~MsgReportCompletedTrips() {
+        }
+        inline virtual void proc() const {
+
+            // Check if any trips are completed
+            std::list<uint32_t> completedTripsList;
+            completedTripsList.clear();
+
+            for(auto itt = mAdapter.mTripSessions.begin(); itt != mAdapter.mTripSessions.end();)
+            {
+                TripSessionStatus &tripSession = itt->second;
+
+                tripSession.accumulatedDistanceThisTrip =
+                        tripSession.accumulatedDistanceOnTripRestart
+                        + (mAccumulatedDistance - tripSession.accumulatedDistanceOngoingBatch);
+                if (tripSession.tripDistance <= tripSession.accumulatedDistanceThisTrip) {
+                    // trip is completed
+                    completedTripsList.push_back(itt->first);
+                    itt = mAdapter.mTripSessions.erase(itt);
+
+                    if (tripSession.tripTBFInterval == mAdapter.mOngoingTripTBFInterval) {
+                        // trip with ongoing TBF interval is completed
+                        mAdapter.mTripWithOngoingTBFDropped = true;
+                    }
+
+                    if (tripSession.tripDistance == mAdapter.mOngoingTripDistance) {
+                        // trip with ongoing trip distance is completed
+                        mAdapter.mTripWithOngoingTripDistanceDropped = true;
+                    }
+                } else {
+                    itt++;
+                }
+            }
+
+            if (completedTripsList.size() > 0) {
+                mAdapter.reportBatchStatusChange(BATCHING_STATUS_TRIP_COMPLETED,
+                        completedTripsList);
+                mAdapter.restartTripBatching(false, mAccumulatedDistance, 0);
+            } else {
+                mAdapter.printTripReport();
+            }
+        }
+    };
+
+    LOC_LOGD("%s]: Accumulated Distance so far: %u",
+               __func__,  accumulated_distance);
+
+    sendMsg(new MsgReportCompletedTrips(*this, accumulated_distance));
+}
+
+void
+BatchingAdapter::reportBatchStatusChange(BatchingStatus batchStatus,
+        std::list<uint32_t> & completedTripsList)
+{
+    BatchingStatusInfo batchStatusInfo =
+            {sizeof(BatchingStatusInfo), batchStatus};
+
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (nullptr != it->second.batchingStatusCb) {
+            it->second.batchingStatusCb(batchStatusInfo, completedTripsList);
+        }
+    }
+}
+
+void
+BatchingAdapter::reportBatchStatusChangeEvent(BatchingStatus batchStatus)
+{
+    struct MsgReportBatchStatus : public LocMsg {
+        BatchingAdapter& mAdapter;
+        BatchingStatus mBatchStatus;
+        inline MsgReportBatchStatus(BatchingAdapter& adapter,
+                BatchingStatus batchStatus) :
+            LocMsg(),
+            mAdapter(adapter),
+            mBatchStatus(batchStatus)
+        {
+        }
+        inline virtual ~MsgReportBatchStatus() {
+        }
+        inline virtual void proc() const {
+            std::list<uint32_t> tempList;
+            tempList.clear();
+            mAdapter.reportBatchStatusChange(mBatchStatus, tempList);
+        }
+    };
+
+    sendMsg(new MsgReportBatchStatus(*this, batchStatus));
+}
+
+void
+BatchingAdapter::startTripBatchingMultiplex(LocationAPI* client, uint32_t sessionId,
+        const BatchingOptions& batchingOptions)
+{
+    if (mTripSessions.size() == 0) {
+        // if there is currenty no batching sessions interested in batch full event, then this
+        // new session will need to register for batch full event
+        if (0 == autoReportBatchingSessionsCount()) {
+            updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                          LOC_REGISTRATION_MASK_ENABLED);
+        }
+
+        // Assume start will be OK, remove session if not
+        saveBatchingSession(client, sessionId, batchingOptions);
+
+        mTripSessions[sessionId] = { 0, 0, 0, batchingOptions.minDistance,
+                batchingOptions.minInterval};
+        mLocApi->startOutdoorTripBatching(batchingOptions.minDistance,
+                batchingOptions.minInterval, getBatchingTimeout(), new LocApiResponse(*getContext(),
+                [this, client, sessionId, batchingOptions] (LocationError err) {
+            if (err == LOCATION_ERROR_SUCCESS) {
+                mOngoingTripDistance = batchingOptions.minDistance;
+                mOngoingTripTBFInterval = batchingOptions.minInterval;
+                LOC_LOGD("%s] New Trip started ...", __func__);
+                printTripReport();
+            } else {
+                eraseBatchingSession(client, sessionId);
+                mTripSessions.erase(sessionId);
+                // if we fail to start batching and we have already registered batch full event
+                // we need to undo that since no sessions are now interested in batch full event
+                if (0 == autoReportBatchingSessionsCount()) {
+                    updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                                  LOC_REGISTRATION_MASK_DISABLED);
+                }
+            }
+            reportResponse(client, err, sessionId);
+        }));
+    } else {
+        // query accumulated distance
+        mLocApi->queryAccumulatedTripDistance(
+                new LocApiResponseData<LocApiBatchData>(*getContext(),
+                [this, batchingOptions, sessionId, client]
+                (LocationError err, LocApiBatchData data) {
+            uint32_t accumulatedDistanceOngoingBatch = 0;
+            uint32_t numOfBatchedPositions = 0;
+            uint32_t ongoingTripDistance = mOngoingTripDistance;
+            uint32_t ongoingTripInterval = mOngoingTripTBFInterval;
+            bool needsRestart = false;
+
+            // check if TBF of new session is lesser than ongoing TBF interval
+            if (ongoingTripInterval > batchingOptions.minInterval) {
+                ongoingTripInterval = batchingOptions.minInterval;
+                needsRestart = true;
+            }
+            accumulatedDistanceOngoingBatch = data.accumulatedDistance;
+            numOfBatchedPositions = data.numOfBatchedPositions;
+            TripSessionStatus newTripSession = { accumulatedDistanceOngoingBatch, 0, 0,
+                                                 batchingOptions.minDistance,
+                                                 batchingOptions.minInterval};
+            if (err != LOCATION_ERROR_SUCCESS) {
+                // unable to query accumulated distance, assume remaining distance in
+                // ongoing batch is mongoingTripDistance.
+                if (batchingOptions.minDistance < ongoingTripDistance) {
+                    ongoingTripDistance = batchingOptions.minDistance;
+                    needsRestart = true;
+                }
+            } else {
+                // compute the remaining distance
+                uint32_t ongoing_trip_remaining_distance = ongoingTripDistance -
+                        accumulatedDistanceOngoingBatch;
+
+                // check if new trip distance is lesser than the ongoing batch remaining distance
+                if (batchingOptions.minDistance < ongoing_trip_remaining_distance) {
+                    ongoingTripDistance = batchingOptions.minDistance;
+                    needsRestart = true;
+                } else if (needsRestart == true) {
+                    // needsRestart is anyways true , may be because of lesser TBF of new session.
+                    ongoingTripDistance = ongoing_trip_remaining_distance;
+                }
+                mTripSessions[sessionId] = newTripSession;
+                LOC_LOGD("%s] New Trip started ...", __func__);
+                printTripReport();
+            }
+
+            if (needsRestart) {
+                mOngoingTripDistance = ongoingTripDistance;
+                mOngoingTripTBFInterval = ongoingTripInterval;
+
+                // reset the accumulatedDistanceOngoingBatch for each session,
+                // and record the total accumulated distance so far for the session.
+                for (auto itt = mTripSessions.begin(); itt != mTripSessions.end(); itt++) {
+                    TripSessionStatus &tripSessStatus = itt->second;
+                    tripSessStatus.accumulatedDistanceOngoingBatch = 0;
+                    tripSessStatus.accumulatedDistanceOnTripRestart =
+                            tripSessStatus.accumulatedDistanceThisTrip;
+                }
+                mLocApi->reStartOutdoorTripBatching(ongoingTripDistance, ongoingTripInterval,
+                        getBatchingTimeout(), new LocApiResponse(*getContext(),
+                        [this, client, sessionId] (LocationError err) {
+                    if (err != LOCATION_ERROR_SUCCESS) {
+                        LOC_LOGE("%s] New Trip restart failed!", __func__);
+                    }
+                    reportResponse(client, err, sessionId);
+                }));
+            } else {
+                reportResponse(client, LOCATION_ERROR_SUCCESS, sessionId);
+            }
+        }));
+    }
+}
+
+void
+BatchingAdapter::stopTripBatchingMultiplex(LocationAPI* client, uint32_t sessionId,
+        bool restartNeeded, const BatchingOptions& batchOptions)
+{
+    LocationError err = LOCATION_ERROR_SUCCESS;
+
+    if (mTripSessions.size() == 1) {
+        mLocApi->stopOutdoorTripBatching(true, new LocApiResponse(*getContext(),
+                [this, restartNeeded, client, sessionId, batchOptions]
+                (LocationError err) {
+            if (LOCATION_ERROR_SUCCESS == err) {
+                // if stopOutdoorTripBatching is success, unregister for batch full event if this
+                // was the last batching session that is interested in batch full event
+                if (1 == autoReportBatchingSessionsCount()) {
+                    updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                                  LOC_REGISTRATION_MASK_DISABLED);
+                }
+            }
+            stopTripBatchingMultiplexCommon(err, client, sessionId, restartNeeded, batchOptions);
+        }));
+        return;
+    }
+
+    stopTripBatchingMultiplexCommon(err, client, sessionId, restartNeeded, batchOptions);
+}
+
+void
+BatchingAdapter::stopTripBatchingMultiplexCommon(LocationError err, LocationAPI* client,
+        uint32_t sessionId, bool restartNeeded, const BatchingOptions& batchOptions)
+{
+    auto itt = mTripSessions.find(sessionId);
+    TripSessionStatus tripSess = itt->second;
+    if (tripSess.tripTBFInterval == mOngoingTripTBFInterval) {
+        // trip with ongoing trip interval is stopped
+        mTripWithOngoingTBFDropped = true;
+    }
+
+    if (tripSess.tripDistance == mOngoingTripDistance) {
+        // trip with ongoing trip distance is stopped
+        mTripWithOngoingTripDistanceDropped = true;
+    }
+
+    mTripSessions.erase(sessionId);
+
+    if (mTripSessions.size() == 0) {
+        mOngoingTripDistance = 0;
+        mOngoingTripTBFInterval = 0;
+    } else {
+        restartTripBatching(true);
+    }
+
+    if (restartNeeded) {
+        eraseBatchingSession(client, sessionId);
+        if (batchOptions.batchingMode == BATCHING_MODE_ROUTINE ||
+                batchOptions.batchingMode == BATCHING_MODE_NO_AUTO_REPORT) {
+            startBatching(client, sessionId, batchOptions);
+        } else if (batchOptions.batchingMode == BATCHING_MODE_TRIP) {
+            startTripBatchingMultiplex(client, sessionId, batchOptions);
+        }
+    }
+    reportResponse(client, err, sessionId);
+}
+
+
+void
+BatchingAdapter::restartTripBatching(bool queryAccumulatedDistance, uint32_t accDist,
+        uint32_t numbatchedPos)
+{
+    // does batch need restart with new trip distance / TBF interval
+    uint32_t minRemainingDistance = 0;
+    uint32_t minTBFInterval = 0;
+
+    // if no more trips left, stop the ongoing trip
+    if (mTripSessions.size() == 0) {
+        mLocApi->stopOutdoorTripBatching(true, new LocApiResponse(*getContext(),
+                                               [] (LocationError /*err*/) {}));
+        mOngoingTripDistance = 0;
+        mOngoingTripTBFInterval = 0;
+        // unregister for batch full event if there are no more
+        // batching session that is interested in batch full event
+        if (0 == autoReportBatchingSessionsCount()) {
+                updateEvtMask(LOC_API_ADAPTER_BIT_BATCH_FULL,
+                              LOC_REGISTRATION_MASK_DISABLED);
+        }
+        return;
+    }
+
+    // record the min trip distance and min tbf interval of all ongoing sessions
+    for (auto itt = mTripSessions.begin(); itt != mTripSessions.end(); itt++) {
+
+        TripSessionStatus tripSessStatus = itt->second;
+
+        if ((minRemainingDistance == 0) ||
+                (minRemainingDistance > (tripSessStatus.tripDistance
+                - tripSessStatus.accumulatedDistanceThisTrip))) {
+            minRemainingDistance = tripSessStatus.tripDistance -
+                    tripSessStatus.accumulatedDistanceThisTrip;
+        }
+
+        if ((minTBFInterval == 0) ||
+            (minTBFInterval > tripSessStatus.tripTBFInterval)) {
+            minTBFInterval = tripSessStatus.tripTBFInterval;
+        }
+    }
+
+    mLocApi->queryAccumulatedTripDistance(
+            new LocApiResponseData<LocApiBatchData>(*getContext(),
+            [this, queryAccumulatedDistance, minRemainingDistance, minTBFInterval, accDist,
+            numbatchedPos] (LocationError /*err*/, LocApiBatchData data) {
+        bool needsRestart = false;
+
+        uint32_t ongoingTripDistance = mOngoingTripDistance;
+        uint32_t ongoingTripInterval = mOngoingTripTBFInterval;
+        uint32_t accumulatedDistance = accDist;
+        uint32_t numOfBatchedPositions = numbatchedPos;
+
+        if (queryAccumulatedDistance) {
+            accumulatedDistance = data.accumulatedDistance;
+            numOfBatchedPositions = data.numOfBatchedPositions;
+        }
+
+        if ((!mTripWithOngoingTripDistanceDropped) &&
+                (ongoingTripDistance - accumulatedDistance != 0)) {
+            // if ongoing trip is already not completed still,
+            // check the min distance against the remaining distance
+            if (minRemainingDistance <
+                    (ongoingTripDistance - accumulatedDistance)) {
+                ongoingTripDistance = minRemainingDistance;
+                needsRestart = true;
+            }
+        } else if (minRemainingDistance != 0) {
+            // else if ongoing trip is already completed / dropped,
+            // use the minRemainingDistance of ongoing sessions
+            ongoingTripDistance = minRemainingDistance;
+            needsRestart = true;
+        }
+
+         if ((minTBFInterval < ongoingTripInterval) ||
+                    ((minTBFInterval != ongoingTripInterval) &&
+                    (mTripWithOngoingTBFDropped))) {
+            ongoingTripInterval = minTBFInterval;
+            needsRestart = true;
+        }
+
+        if (needsRestart) {
+            mLocApi->reStartOutdoorTripBatching(ongoingTripDistance, ongoingTripInterval,
+                    getBatchingTimeout(), new LocApiResponse(*getContext(),
+                    [this, accumulatedDistance, ongoingTripDistance, ongoingTripInterval]
+                    (LocationError err) {
+
+                if (err == LOCATION_ERROR_SUCCESS) {
+                    for(auto itt = mTripSessions.begin(); itt != mTripSessions.end(); itt++) {
+                        TripSessionStatus &tripSessStatus = itt->second;
+                        tripSessStatus.accumulatedDistanceThisTrip =
+                                tripSessStatus.accumulatedDistanceOnTripRestart +
+                                (accumulatedDistance -
+                                 tripSessStatus.accumulatedDistanceOngoingBatch);
+
+                        tripSessStatus.accumulatedDistanceOngoingBatch = 0;
+                        tripSessStatus.accumulatedDistanceOnTripRestart =
+                                tripSessStatus.accumulatedDistanceThisTrip;
+                    }
+
+                    mOngoingTripDistance = ongoingTripDistance;
+                    mOngoingTripTBFInterval = ongoingTripInterval;
+                }
+            }));
+        }
+    }));
+}
+
+void
+BatchingAdapter::printTripReport()
+{
+    IF_LOC_LOGD {
+        LOC_LOGD("Ongoing Trip Distance = %u, Ongoing Trip TBF Interval = %u",
+                mOngoingTripDistance, mOngoingTripTBFInterval);
+
+        for (auto itt = mTripSessions.begin(); itt != mTripSessions.end(); itt++) {
+            TripSessionStatus tripSessStatus = itt->second;
+
+            LOC_LOGD("tripDistance:%u tripTBFInterval:%u"
+                    " trip accumulated Distance:%u"
+                    " trip accumualted distance ongoing batch:%u"
+                    " trip accumulated distance on trip restart %u \r\n",
+                    tripSessStatus.tripDistance, tripSessStatus.tripTBFInterval,
+                    tripSessStatus.accumulatedDistanceThisTrip,
+                    tripSessStatus.accumulatedDistanceOngoingBatch,
+                    tripSessStatus.accumulatedDistanceOnTripRestart);
+        }
+    }
+}
diff --git a/batching/BatchingAdapter.h b/batching/BatchingAdapter.h
new file mode 100644
index 0000000..66f7c5f
--- /dev/null
+++ b/batching/BatchingAdapter.h
@@ -0,0 +1,152 @@
+/* Copyright (c) 2017-2019, 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_ADAPTER_H
+#define BATCHING_ADAPTER_H
+
+#include <LocAdapterBase.h>
+#include <LocContext.h>
+#include <LocationAPI.h>
+#include <map>
+
+using namespace loc_core;
+
+class BatchingAdapter : public LocAdapterBase {
+
+    /* ==== BATCHING ======================================================================= */
+    typedef struct {
+        uint32_t accumulatedDistanceOngoingBatch;
+        uint32_t accumulatedDistanceThisTrip;
+        uint32_t accumulatedDistanceOnTripRestart;
+        uint32_t tripDistance;
+        uint32_t tripTBFInterval;
+    } TripSessionStatus;
+    typedef std::map<uint32_t, TripSessionStatus> TripSessionStatusMap;
+    typedef std::map<LocationSessionKey, BatchingOptions> BatchingSessionMap;
+
+    BatchingSessionMap mBatchingSessions;
+    TripSessionStatusMap mTripSessions;
+    uint32_t mOngoingTripDistance;
+    uint32_t mOngoingTripTBFInterval;
+    bool mTripWithOngoingTBFDropped;
+    bool mTripWithOngoingTripDistanceDropped;
+
+    void startTripBatchingMultiplex(LocationAPI* client, uint32_t sessionId,
+                                    const BatchingOptions& batchingOptions);
+    void stopTripBatchingMultiplex(LocationAPI* client, uint32_t sessionId,
+                                   bool restartNeeded,
+                                   const BatchingOptions& batchOptions);
+    inline void stopTripBatchingMultiplex(LocationAPI* client, uint32_t id) {
+        BatchingOptions batchOptions;
+        stopTripBatchingMultiplex(client, id, false, batchOptions);
+    };
+    void stopTripBatchingMultiplexCommon(LocationError err,
+                                         LocationAPI* client,
+                                         uint32_t sessionId,
+                                         bool restartNeeded,
+                                         const BatchingOptions& batchOptions);
+    void restartTripBatching(bool queryAccumulatedDistance, uint32_t accDist = 0,
+                             uint32_t numbatchedPos = 0);
+    void printTripReport();
+
+    /* ==== CONFIGURATION ================================================================== */
+    uint32_t mBatchingTimeout;
+    uint32_t mBatchingAccuracy;
+    size_t mBatchSize;
+    size_t mTripBatchSize;
+
+protected:
+
+    /* ==== CLIENT ========================================================================= */
+    virtual void updateClientsEventMask();
+    virtual void stopClientSessions(LocationAPI* client);
+
+public:
+    BatchingAdapter();
+    virtual ~BatchingAdapter() {}
+
+    /* ==== SSR ============================================================================ */
+    /* ======== EVENTS ====(Called from QMI Thread)========================================= */
+    virtual void handleEngineUpEvent();
+    /* ======== UTILITIES ================================================================== */
+    void restartSessions();
+
+    /* ==== BATCHING ======================================================================= */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    uint32_t startBatchingCommand(LocationAPI* client, BatchingOptions &batchOptions);
+    void updateBatchingOptionsCommand(
+            LocationAPI* client, uint32_t id, BatchingOptions& batchOptions);
+    void stopBatchingCommand(LocationAPI* client, uint32_t id);
+    void getBatchedLocationsCommand(LocationAPI* client, uint32_t id, size_t count);
+    /* ======== RESPONSES ================================================================== */
+    void reportResponse(LocationAPI* client, LocationError err, uint32_t sessionId);
+    /* ======== UTILITIES ================================================================== */
+    bool hasBatchingCallback(LocationAPI* client);
+    bool isBatchingSession(LocationAPI* client, uint32_t sessionId);
+    bool isTripSession(uint32_t sessionId);
+    void saveBatchingSession(LocationAPI* client, uint32_t sessionId,
+                             const BatchingOptions& batchingOptions);
+    void eraseBatchingSession(LocationAPI* client, uint32_t sessionId);
+    uint32_t autoReportBatchingSessionsCount();
+    void startBatching(LocationAPI* client, uint32_t sessionId,
+                       const BatchingOptions& batchingOptions);
+    void stopBatching(LocationAPI* client, uint32_t sessionId, bool restartNeeded,
+                      const BatchingOptions& batchOptions);
+    void stopBatching(LocationAPI* client, uint32_t sessionId) {
+        BatchingOptions batchOptions;
+        stopBatching(client, sessionId, false, batchOptions);
+    };
+
+    /* ==== REPORTS ======================================================================== */
+    /* ======== EVENTS ====(Called from QMI Thread)========================================= */
+    void reportLocationsEvent(const Location* locations, size_t count,
+            BatchingMode batchingMode);
+    void reportCompletedTripsEvent(uint32_t accumulatedDistance);
+    void reportBatchStatusChangeEvent(BatchingStatus batchStatus);
+    /* ======== UTILITIES ================================================================== */
+    void reportLocations(Location* locations, size_t count, BatchingMode batchingMode);
+    void reportBatchStatusChange(BatchingStatus batchStatus,
+            std::list<uint32_t> & completedTripsList);
+
+    /* ==== CONFIGURATION ================================================================== */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    void readConfigCommand();
+    void setConfigCommand();
+    /* ======== UTILITIES ================================================================== */
+    void setBatchSize(size_t batchSize) { mBatchSize = batchSize; }
+    size_t getBatchSize() { return mBatchSize; }
+    void setTripBatchSize(size_t batchSize) { mTripBatchSize = batchSize; }
+    size_t getTripBatchSize() { return mTripBatchSize; }
+    void setBatchingTimeout(uint32_t batchingTimeout) { mBatchingTimeout = batchingTimeout; }
+    uint32_t getBatchingTimeout() { return mBatchingTimeout; }
+    void setBatchingAccuracy(uint32_t accuracy) { mBatchingAccuracy = accuracy; }
+    uint32_t getBatchingAccuracy() { return mBatchingAccuracy; }
+
+};
+
+#endif /* BATCHING_ADAPTER_H */
diff --git a/batching/Makefile.am b/batching/Makefile.am
new file mode 100644
index 0000000..ef8011e
--- /dev/null
+++ b/batching/Makefile.am
@@ -0,0 +1,45 @@
+AM_CFLAGS = \
+     $(GPSUTILS_CFLAGS) \
+     $(LOCCORE_CFLAGS) \
+     -I./ \
+     -std=c++1y \
+     -D__func__=__PRETTY_FUNCTION__ \
+     -fno-short-enums
+
+ACLOCAL_AMFLAGS = -I m4
+
+requiredlibs = \
+        $(GPSUTILS_LIBS) \
+        $(LOCCORE_LIBS) \
+        -llog
+
+h_sources = \
+    BatchingAdapter.h
+
+libbatching_la_SOURCES = \
+    location_batching.cpp \
+    BatchingAdapter.cpp
+
+if USE_GLIB
+libbatching_la_CFLAGS = -DUSE_GLIB $(AM_CFLAGS) @GLIB_CFLAGS@
+#libbatching_la_LDFLAGS = -lstdc++ -g -Wl,-z,defs -lpthread $(requiredlibs) @GLIB_LIBS@ -shared -avoid-version
+libbatching_la_LDFLAGS = -lstdc++ -g -Wl,-z,defs -lpthread $(requiredlibs) @GLIB_LIBS@ -avoid-version
+libbatching_la_CPPFLAGS = -DUSE_GLIB $(AM_CFLAGS) $(AM_CPPFLAGS) @GLIB_CFLAGS@
+else
+libbatching_la_CFLAGS = $(AM_CFLAGS)
+libbatching_la_LDFLAGS = -Wl,-z,defs -lpthread $(requiredlibs) -shared -version-info 1:0:0
+libbatching_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
+endif
+
+library_include_HEADERS = $(h_sources)
+
+library_includedir = $(pkgincludedir)
+
+#Create and Install libraries
+lib_LTLIBRARIES = libbatching.la
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = location-batching.pc
+sysconf_DATA = $(WORKSPACE)/hardware/qcom/gps/etc/flp.conf
+EXTRA_DIST = $(pkgconfig_DATA)
+
diff --git a/batching/configure.ac b/batching/configure.ac
new file mode 100644
index 0000000..27435c6
--- /dev/null
+++ b/batching/configure.ac
@@ -0,0 +1,78 @@
+# configure.ac -- Autoconf script for gps location-batching
+#
+# Process this file with autoconf to produce a configure script
+
+# Requires autoconf tool later than 2.61
+AC_PREREQ(2.61)
+# Initialize the gps location-batching package version 1.0.0
+AC_INIT([location-batching],1.0.0)
+# Does not strictly follow GNU Coding standards
+AM_INIT_AUTOMAKE([foreign])
+# Disables auto rebuilding of configure, Makefile.ins
+AM_MAINTAINER_MODE
+# Verifies the --srcdir is correct by checking for the path
+AC_CONFIG_SRCDIR([Makefile.am])
+# defines some macros variable to be included by source
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+# Checks for libraries.
+PKG_CHECK_MODULES([GPSUTILS], [gps-utils])
+AC_SUBST([GPSUTILS_CFLAGS])
+AC_SUBST([GPSUTILS_LIBS])
+
+PKG_CHECK_MODULES([LOCCORE], [loc-core])
+AC_SUBST([LOCCORE_CFLAGS])
+AC_SUBST([LOCCORE_LIBS])
+
+PKG_CHECK_MODULES([GEOFENCE], [location-geofence])
+AC_SUBST([GEOFENCE_CFLAGS])
+AC_SUBST([GEOFENCE_LIBS])
+
+AC_ARG_WITH([locpla_includes],
+      AC_HELP_STRING([--with-locpla-includes=@<:@dir@:>@],
+         [specify the path to locpla-includes in loc-pla_git.bb]),
+      [locpla_incdir=$withval],
+      with_locpla_includes=no)
+
+if test "x$with_locpla_includes" != "xno"; then
+   AC_SUBST(LOCPLA_CFLAGS, "-I${locpla_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 \
+        location-batching.pc
+        ])
+
+AC_OUTPUT
diff --git a/batching/location-batching.pc.in b/batching/location-batching.pc.in
new file mode 100644
index 0000000..da1fbf4
--- /dev/null
+++ b/batching/location-batching.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: location-batching
+Description: QTI GPS Batching
+Version: @VERSION
+Libs: -L${libdir} -lbatching
+Cflags: -I${includedir}/location-batching
diff --git a/batching/location_batching.cpp b/batching/location_batching.cpp
new file mode 100644
index 0000000..571da72
--- /dev/null
+++ b/batching/location_batching.cpp
@@ -0,0 +1,134 @@
+/* Copyright (c) 2017-2019, 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 "BatchingAdapter.h"
+#include "location_interface.h"
+
+static BatchingAdapter* gBatchingAdapter = NULL;
+
+static void initialize();
+static void deinitialize();
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks);
+static void removeClient(LocationAPI* client, removeClientCompleteCallback rmClientCb);
+static void requestCapabilities(LocationAPI* client);
+
+static uint32_t startBatching(LocationAPI* client, BatchingOptions&);
+static void stopBatching(LocationAPI* client, uint32_t id);
+static void updateBatchingOptions(LocationAPI* client, uint32_t id, BatchingOptions&);
+static void getBatchedLocations(LocationAPI* client, uint32_t id, size_t count);
+
+static const BatchingInterface gBatchingInterface = {
+    sizeof(BatchingInterface),
+    initialize,
+    deinitialize,
+    addClient,
+    removeClient,
+    requestCapabilities,
+    startBatching,
+    stopBatching,
+    updateBatchingOptions,
+    getBatchedLocations
+};
+
+#ifndef DEBUG_X86
+extern "C" const BatchingInterface* getBatchingInterface()
+#else
+const BatchingInterface* getBatchingInterface()
+#endif // DEBUG_X86
+{
+   return &gBatchingInterface;
+}
+
+static void initialize()
+{
+    if (NULL == gBatchingAdapter) {
+        gBatchingAdapter = new BatchingAdapter();
+    }
+}
+
+static void deinitialize()
+{
+    if (NULL != gBatchingAdapter) {
+        delete gBatchingAdapter;
+        gBatchingAdapter = NULL;
+    }
+}
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->addClientCommand(client, callbacks);
+    }
+}
+
+static void removeClient(LocationAPI* client, removeClientCompleteCallback rmClientCb)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->removeClientCommand(client, rmClientCb);
+    }
+}
+
+static void requestCapabilities(LocationAPI* client)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->requestCapabilitiesCommand(client);
+    }
+}
+
+static uint32_t startBatching(LocationAPI* client, BatchingOptions &batchOptions)
+{
+    if (NULL != gBatchingAdapter) {
+        return gBatchingAdapter->startBatchingCommand(client, batchOptions);
+    } else {
+        return 0;
+    }
+}
+
+static void stopBatching(LocationAPI* client, uint32_t id)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->stopBatchingCommand(client, id);
+    }
+}
+
+static void updateBatchingOptions(
+        LocationAPI* client, uint32_t id, BatchingOptions& batchOptions)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->updateBatchingOptionsCommand(client, id, batchOptions);
+    }
+}
+
+static void getBatchedLocations(LocationAPI* client, uint32_t id, size_t count)
+{
+    if (NULL != gBatchingAdapter) {
+        gBatchingAdapter->getBatchedLocationsCommand(client, id, count);
+    }
+}
+
diff --git a/build/target_specific_features.mk b/build/target_specific_features.mk
index 0c0f730..2e74aff 100644
--- a/build/target_specific_features.mk
+++ b/build/target_specific_features.mk
@@ -16,6 +16,8 @@ GNSS_CFLAGS := \
     -Wno-error=switch \
     -Wno-error=date-time
 
+LOCAL_SANITIZE := signed-integer-overflow, unsigned-integer-overflow
+
 # GPS-HIDL
 GNSS_HIDL_1_0_TARGET_LIST := msm8960
 GNSS_HIDL_1_0_TARGET_LIST += msm8974
@@ -28,23 +30,38 @@ GNSS_HIDL_1_0_TARGET_LIST += msm8909
 GNSS_HIDL_1_0_TARGET_LIST += msm8952
 GNSS_HIDL_1_0_TARGET_LIST += msm8992
 GNSS_HIDL_1_0_TARGET_LIST += msm8996
-GNSS_HIDL_1_0_TARGET_LIST += msm8937
-GNSS_HIDL_1_0_TARGET_LIST += msm8953
-GNSS_HIDL_1_0_TARGET_LIST += msm8998
-GNSS_HIDL_1_0_TARGET_LIST += apq8098_latv
-GNSS_HIDL_1_0_TARGET_LIST += sdm710
-GNSS_HIDL_1_0_TARGET_LIST += qcs605
-GNSS_HIDL_1_0_TARGET_LIST += sdm845
-GNSS_HIDL_1_0_TARGET_LIST += sdm660
-GNSS_HIDL_1_1_TARGET_LIST := msmnile
-GNSS_HIDL_1_1_TARGET_LIST += $(MSMSTEPPE)
-GNSS_HIDL_1_1_TARGET_LIST += $(TRINKET)
-
+GNSS_HIDL_2_0_TARGET_LIST := msm8937
+GNSS_HIDL_2_0_TARGET_LIST += msm8953
+GNSS_HIDL_2_0_TARGET_LIST += msm8998
+GNSS_HIDL_2_0_TARGET_LIST += apq8098_latv
+GNSS_HIDL_2_0_TARGET_LIST += sdm710
+GNSS_HIDL_2_0_TARGET_LIST += qcs605
+GNSS_HIDL_2_0_TARGET_LIST += sdm845
+GNSS_HIDL_2_0_TARGET_LIST += sdm660
+GNSS_HIDL_2_0_TARGET_LIST += msmnile
+GNSS_HIDL_2_0_TARGET_LIST += $(MSMSTEPPE)
+GNSS_HIDL_2_0_TARGET_LIST += $(TRINKET)
+GNSS_HIDL_2_0_TARGET_LIST += kona
 
+ifneq (,$(filter $(GNSS_HIDL_2_0_TARGET_LIST),$(TARGET_BOARD_PLATFORM)))
+GNSS_HIDL_VERSION = 2.0
+endif
 ifneq (,$(filter $(GNSS_HIDL_1_0_TARGET_LIST),$(TARGET_BOARD_PLATFORM)))
 GNSS_HIDL_VERSION = 1.0
 endif
-
 ifneq (,$(filter $(GNSS_HIDL_1_1_TARGET_LIST),$(TARGET_BOARD_PLATFORM)))
 GNSS_HIDL_VERSION = 1.1
 endif
+
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST := msm8937
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += msm8953
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += msm8998
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += apq8098_latv
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += sdm710
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += qcs605
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += sdm845
+GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST += sdm660
+
+ifneq (,$(filter $(GNSS_HIDL_LEGACY_MEASURMENTS_TARGET_LIST),$(TARGET_BOARD_PLATFORM)))
+GNSS_HIDL_LEGACY_MEASURMENTS = true
+endif
diff --git a/core/Android.mk b/core/Android.mk
index 97614a1..bd955c1 100644
--- a/core/Android.mk
+++ b/core/Android.mk
@@ -21,7 +21,7 @@ LOCAL_SRC_FILES += \
     LocApiBase.cpp \
     LocAdapterBase.cpp \
     ContextBase.cpp \
-    LocDualContext.cpp \
+    LocContext.cpp \
     loc_core_log.cpp \
     data-items/DataItemsFactoryProxy.cpp \
     SystemStatusOsObserver.cpp \
diff --git a/core/ContextBase.cpp b/core/ContextBase.cpp
index 3d55e1c..28109bb 100644
--- a/core/ContextBase.cpp
+++ b/core/ContextBase.cpp
@@ -108,7 +108,7 @@ void ContextBase::readConfig()
         mGps_conf.INTERMEDIATE_POS = 0;
         mGps_conf.ACCURACY_THRES = 0;
         mGps_conf.NMEA_PROVIDER = 0;
-        mGps_conf.GPS_LOCK = 0x03;
+        mGps_conf.GPS_LOCK = GNSS_CONFIG_GPS_LOCK_MO_AND_NI;
         mGps_conf.SUPL_VER = 0x10000;
         mGps_conf.SUPL_MODE = 0x1;
         mGps_conf.SUPL_ES = 0;
diff --git a/core/ContextBase.h b/core/ContextBase.h
index 8a3d300..9c72835 100644
--- a/core/ContextBase.h
+++ b/core/ContextBase.h
@@ -55,7 +55,7 @@ typedef struct loc_gps_cfg_s
     char           XTRA_SERVER_3[LOC_MAX_PARAM_STRING];
     uint32_t       USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL;
     uint32_t       NMEA_PROVIDER;
-    uint32_t       GPS_LOCK;
+    GnssConfigGpsLock   GPS_LOCK;
     uint32_t       A_GLONASS_POS_PROTOCOL_SELECT;
     uint32_t       AGPS_CERT_WRITABLE_MASK;
     uint32_t       AGPS_CONFIG_INJECT;
diff --git a/core/EngineHubProxyBase.h b/core/EngineHubProxyBase.h
index 34af4d0..4239a50 100644
--- a/core/EngineHubProxyBase.h
+++ b/core/EngineHubProxyBase.h
@@ -90,6 +90,17 @@ public:
         (void) systemInfo;
         return false;
     }
+
+    inline virtual bool gnssReportKlobucharIonoModel(const GnssKlobucharIonoModel& ionoModel) {
+        (void) ionoModel;
+        return false;
+    }
+
+    inline virtual bool gnssReportAdditionalSystemInfo(
+            const GnssAdditionalSystemInfo& additionalSystemInfo) {
+        (void) additionalSystemInfo;
+        return false;
+    }
 };
 
 typedef std::function<void(const UlpLocation& ulpLocation,
diff --git a/core/LocAdapterBase.cpp b/core/LocAdapterBase.cpp
index 3f82dd6..6fad918 100644
--- a/core/LocAdapterBase.cpp
+++ b/core/LocAdapterBase.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2014, 2016-2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2014, 2016-2019 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
@@ -46,7 +46,8 @@ LocAdapterBase::LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
                                LocAdapterProxyBase *adapterProxyBase) :
     mIsMaster(isMaster), mEvtMask(mask), mContext(context),
     mLocApi(context->getLocApi()), mLocAdapterProxyBase(adapterProxyBase),
-    mMsgTask(context->getMsgTask())
+    mMsgTask(context->getMsgTask()),
+    mIsEngineCapabilitiesKnown(ContextBase::sIsEngineCapabilitiesKnown)
 {
     mLocApi->addAdapter(this);
 }
@@ -100,10 +101,6 @@ void LocAdapterBase::
 DEFAULT_IMPL()
 
 void LocAdapterBase::
-    reportSvMeasurementEvent(GnssSvMeasurementSet &/*svMeasurementSet*/)
-DEFAULT_IMPL()
-
-void LocAdapterBase::
     reportSvPolynomialEvent(GnssSvPolynomial &/*svPolynomial*/)
 DEFAULT_IMPL()
 
@@ -161,7 +158,7 @@ bool LocAdapterBase::
 DEFAULT_IMPL(false)
 
 void LocAdapterBase::
-    reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& /*measurements*/,
+reportGnssMeasurementsEvent(const GnssMeasurements& /*gnssMeasurements*/,
                                    int /*msInWeek*/)
 DEFAULT_IMPL()
 
@@ -191,4 +188,220 @@ DEFAULT_IMPL(false)
 bool LocAdapterBase::
     reportDeleteAidingDataEvent(GnssAidingData & /*aidingData*/)
 DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    reportKlobucharIonoModelEvent(GnssKlobucharIonoModel& /*ionoModel*/)
+DEFAULT_IMPL(false)
+
+bool LocAdapterBase::
+    reportGnssAdditionalSystemInfoEvent(GnssAdditionalSystemInfo& /*additionalSystemInfo*/)
+DEFAULT_IMPL(false)
+
+void LocAdapterBase::
+    reportNfwNotificationEvent(GnssNfwNotification& /*notification*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::geofenceBreachEvent(size_t /*count*/, uint32_t* /*hwIds*/, Location& /*location*/,
+                                    GeofenceBreachType /*breachType*/, uint64_t /*timestamp*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::geofenceStatusEvent(GeofenceStatusAvailable /*available*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::reportLocationsEvent(const Location* /*locations*/, size_t /*count*/,
+                                     BatchingMode /*batchingMode*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::reportCompletedTripsEvent(uint32_t /*accumulated_distance*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::reportBatchStatusChangeEvent(BatchingStatus /*batchStatus*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::reportPositionEvent(UlpLocation& /*location*/,
+                                    GpsLocationExtended& /*locationExtended*/,
+                                    enum loc_sess_status /*status*/,
+                                    LocPosTechMask /*loc_technology_mask*/)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::saveClient(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    mClientData[client] = callbacks;
+    updateClientsEventMask();
+}
+
+void
+LocAdapterBase::eraseClient(LocationAPI* client)
+{
+    auto it = mClientData.find(client);
+    if (it != mClientData.end()) {
+        mClientData.erase(it);
+    }
+    updateClientsEventMask();
+}
+
+LocationCallbacks
+LocAdapterBase::getClientCallbacks(LocationAPI* client)
+{
+    LocationCallbacks callbacks = {};
+    auto it = mClientData.find(client);
+    if (it != mClientData.end()) {
+        callbacks = it->second;
+    }
+    return callbacks;
+}
+
+LocationCapabilitiesMask
+LocAdapterBase::getCapabilities()
+{
+    LocationCapabilitiesMask mask = 0;
+
+    if (isEngineCapabilitiesKnown()) {
+        // time based tracking always supported
+        mask |= LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT;
+        if (ContextBase::isMessageSupported(
+                LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING)){
+            mask |= LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT |
+                    LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT;
+        }
+        if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
+            mask |= LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT;
+        }
+        if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_OUTDOOR_TRIP_BATCHING)) {
+            mask |= LOCATION_CAPABILITIES_OUTDOOR_TRIP_BATCHING_BIT;
+        }
+        // geofence always supported
+        mask |= LOCATION_CAPABILITIES_GEOFENCE_BIT;
+        if (ContextBase::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;
+        }
+        if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_DEBUG_NMEA_V02)) {
+            mask |= LOCATION_CAPABILITIES_DEBUG_NMEA_BIT;
+        }
+        if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
+            mask |= LOCATION_CAPABILITIES_CONSTELLATION_ENABLEMENT_BIT;
+        }
+        if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02)) {
+            mask |= LOCATION_CAPABILITIES_AGPM_BIT;
+        }
+    } else {
+        LOC_LOGE("%s]: attempt to get capabilities before they are known.", __func__);
+    }
+
+    return mask;
+}
+
+void
+LocAdapterBase::broadcastCapabilities(LocationCapabilitiesMask mask)
+{
+    for (auto clientData : mClientData) {
+        if (nullptr != clientData.second.capabilitiesCb) {
+            clientData.second.capabilitiesCb(mask);
+        }
+    }
+}
+
+void
+LocAdapterBase::updateClientsEventMask()
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::stopClientSessions(LocationAPI* client)
+DEFAULT_IMPL()
+
+void
+LocAdapterBase::addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+    struct MsgAddClient : public LocMsg {
+        LocAdapterBase& mAdapter;
+        LocationAPI* mClient;
+        const LocationCallbacks mCallbacks;
+        inline MsgAddClient(LocAdapterBase& 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
+LocAdapterBase::removeClientCommand(LocationAPI* client,
+                                removeClientCompleteCallback rmClientCb)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+    struct MsgRemoveClient : public LocMsg {
+        LocAdapterBase& mAdapter;
+        LocationAPI* mClient;
+        removeClientCompleteCallback mRmClientCb;
+        inline MsgRemoveClient(LocAdapterBase& adapter,
+                               LocationAPI* client,
+                               removeClientCompleteCallback rmCb) :
+            LocMsg(),
+            mAdapter(adapter),
+            mClient(client),
+            mRmClientCb(rmCb){}
+        inline virtual void proc() const {
+            mAdapter.stopClientSessions(mClient);
+            mAdapter.eraseClient(mClient);
+            if (nullptr != mRmClientCb) {
+                (mRmClientCb)(mClient);
+            }
+        }
+    };
+
+    sendMsg(new MsgRemoveClient(*this, client, rmClientCb));
+}
+
+void
+LocAdapterBase::requestCapabilitiesCommand(LocationAPI* client)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgRequestCapabilities : public LocMsg {
+        LocAdapterBase& mAdapter;
+        LocationAPI* mClient;
+        inline MsgRequestCapabilities(LocAdapterBase& adapter,
+                                      LocationAPI* client) :
+            LocMsg(),
+            mAdapter(adapter),
+            mClient(client) {}
+        inline virtual void proc() const {
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgRequestCapabilities(*this));
+                return;
+            }
+            LocationCallbacks callbacks = mAdapter.getClientCallbacks(mClient);
+            if (callbacks.capabilitiesCb != nullptr) {
+                callbacks.capabilitiesCb(mAdapter.getCapabilities());
+            }
+        }
+    };
+
+    sendMsg(new MsgRequestCapabilities(*this, client));
+}
+
 } // namespace loc_core
diff --git a/core/LocAdapterBase.h b/core/LocAdapterBase.h
index e4f7be2..13c8493 100644
--- a/core/LocAdapterBase.h
+++ b/core/LocAdapterBase.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2014, 2016-2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2014, 2016-2019 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
@@ -34,6 +34,8 @@
 #include <LocationAPI.h>
 #include <map>
 
+#define MIN_TRACKING_INTERVAL (100) // 100 msec
+
 typedef struct LocationSessionKey {
     LocationAPI* client;
     uint32_t id;
@@ -49,8 +51,8 @@ inline bool operator ==(LocationSessionKey const& left, LocationSessionKey const
 inline bool operator !=(LocationSessionKey const& left, LocationSessionKey const& right) {
     return left.id != right.id || left.client != right.client;
 }
-typedef std::map<LocationSessionKey, LocationOptions> LocationSessionMap;
-typedef std::map<LocationSessionKey, TrackingOptions> TrackingOptionsMap;
+
+typedef void (*removeClientCompleteCallback)(LocationAPI* client);
 
 namespace loc_core {
 
@@ -60,6 +62,8 @@ class LocAdapterBase {
 private:
     static uint32_t mSessionIdCounter;
     const bool mIsMaster;
+    bool mIsEngineCapabilitiesKnown = false;
+
 protected:
     LOC_API_ADAPTER_EVENT_MASK_T mEvtMask;
     ContextBase* mContext;
@@ -69,15 +73,25 @@ protected:
     inline LocAdapterBase(const MsgTask* msgTask) :
         mIsMaster(false), mEvtMask(0), mContext(NULL), mLocApi(NULL),
         mLocAdapterProxyBase(NULL), mMsgTask(msgTask) {}
-    LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
-        ContextBase* context, bool isMaster,
-        LocAdapterProxyBase *adapterProxyBase = NULL);
+
+    /* ==== CLIENT ========================================================================= */
+    typedef std::map<LocationAPI*, LocationCallbacks> ClientDataMap;
+    ClientDataMap mClientData;
+    std::vector<LocMsg*> mPendingMsgs; // For temporal storage of msgs before Open is completed
+    /* ======== UTILITIES ================================================================== */
+    void saveClient(LocationAPI* client, const LocationCallbacks& callbacks);
+    void eraseClient(LocationAPI* client);
+    LocationCallbacks getClientCallbacks(LocationAPI* client);
+    LocationCapabilitiesMask getCapabilities();
+    void broadcastCapabilities(LocationCapabilitiesMask mask);
+    virtual void updateClientsEventMask();
+    virtual void stopClientSessions(LocationAPI* client);
+
 public:
     inline virtual ~LocAdapterBase() { mLocApi->removeAdapter(this); }
-    inline LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
-                          ContextBase* context,
-                          LocAdapterProxyBase *adapterProxyBase = NULL) :
-        LocAdapterBase(mask, context, false, adapterProxyBase) {}
+    LocAdapterBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
+                   ContextBase* context, bool isMaster = false,
+                   LocAdapterProxyBase *adapterProxyBase = NULL);
 
     inline LOC_API_ADAPTER_EVENT_MASK_T
         checkMask(LOC_API_ADAPTER_EVENT_MASK_T mask) const {
@@ -128,12 +142,11 @@ public:
         return mIsMaster;
     }
 
+    inline bool isEngineCapabilitiesKnown() { return mIsEngineCapabilitiesKnown;}
+    inline void setEngineCapabilitiesKnown(bool value) { mIsEngineCapabilitiesKnown = value;}
+
     virtual void handleEngineUpEvent();
     virtual void handleEngineDownEvent();
-    inline virtual void setPositionModeCommand(LocPosMode& posMode) {
-
-        (void)posMode;
-    }
     virtual void reportPositionEvent(const UlpLocation& location,
                                      const GpsLocationExtended& locationExtended,
                                      enum loc_sess_status status,
@@ -145,7 +158,6 @@ public:
                                bool fromEngineHub=false);
     virtual void reportDataEvent(const GnssDataNotification& dataNotify, int msInWeek);
     virtual void reportNmeaEvent(const char* nmea, size_t length);
-    virtual void reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet);
     virtual void reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial);
     virtual void reportSvEphemerisEvent(GnssSvEphemerisReport &svEphemeris);
     virtual void reportStatus(LocGpsStatusValue status);
@@ -162,7 +174,7 @@ public:
     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& measurements,
+    virtual void reportGnssMeasurementsEvent(const GnssMeasurements& gnssMeasurements,
                                                 int msInWeek);
     virtual bool reportWwanZppFix(LocGpsLocation &zppLoc);
     virtual bool reportZppBestAvailableFix(LocGpsLocation &zppLoc,
@@ -172,6 +184,32 @@ public:
     virtual bool requestOdcpiEvent(OdcpiRequestInfo& request);
     virtual bool reportGnssEngEnergyConsumedEvent(uint64_t energyConsumedSinceFirstBoot);
     virtual bool reportDeleteAidingDataEvent(GnssAidingData &aidingData);
+    virtual bool reportKlobucharIonoModelEvent(GnssKlobucharIonoModel& ionoModel);
+    virtual bool reportGnssAdditionalSystemInfoEvent(
+            GnssAdditionalSystemInfo& additionalSystemInfo);
+    virtual void reportNfwNotificationEvent(GnssNfwNotification& notification);
+
+    virtual void geofenceBreachEvent(size_t count, uint32_t* hwIds, Location& location,
+                                     GeofenceBreachType breachType, uint64_t timestamp);
+    virtual void geofenceStatusEvent(GeofenceStatusAvailable available);
+
+    virtual void reportPositionEvent(UlpLocation &location,
+                                     GpsLocationExtended &locationExtended,
+                                     enum loc_sess_status status,
+                                     LocPosTechMask loc_technology_mask);
+
+    virtual void reportLocationsEvent(const Location* locations, size_t count,
+            BatchingMode batchingMode);
+    virtual void reportCompletedTripsEvent(uint32_t accumulated_distance);
+    virtual void reportBatchStatusChangeEvent(BatchingStatus batchStatus);
+
+    /* ==== CLIENT ========================================================================= */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    void addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks);
+    void removeClientCommand(LocationAPI* client,
+                             removeClientCompleteCallback rmClientCb);
+    void requestCapabilitiesCommand(LocationAPI* client);
+
 };
 
 } // namespace loc_core
diff --git a/core/LocAdapterProxyBase.h b/core/LocAdapterProxyBase.h
index b33d7b0..727d424 100644
--- a/core/LocAdapterProxyBase.h
+++ b/core/LocAdapterProxyBase.h
@@ -40,8 +40,8 @@ private:
     LocAdapterBase *mLocAdapterBase;
 protected:
     inline LocAdapterProxyBase(const LOC_API_ADAPTER_EVENT_MASK_T mask,
-                   ContextBase* context):
-                   mLocAdapterBase(new LocAdapterBase(mask, context, this)) {
+                               ContextBase* context, bool isMaster = false):
+            mLocAdapterBase(new LocAdapterBase(mask, context, isMaster, this)) {
     }
     inline virtual ~LocAdapterProxyBase() {
         delete mLocAdapterBase;
diff --git a/core/LocApiBase.cpp b/core/LocApiBase.cpp
index c2ee411..c172376 100644
--- a/core/LocApiBase.cpp
+++ b/core/LocApiBase.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2014, 2016-2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2014, 2016-2019 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
@@ -31,10 +31,11 @@
 
 #include <dlfcn.h>
 #include <inttypes.h>
+#include <gps_extended_c.h>
 #include <LocApiBase.h>
 #include <LocAdapterBase.h>
 #include <log_util.h>
-#include <LocDualContext.h>
+#include <LocContext.h>
 
 namespace loc_core {
 
@@ -95,7 +96,10 @@ struct LocSsrMsg : public LocMsg {
     }
     inline virtual void proc() const {
         mLocApi->close();
-        mLocApi->open(mLocApi->getEvtMask());
+        if (LOC_API_ADAPTER_ERR_SUCCESS == mLocApi->open(mLocApi->getEvtMask())) {
+            // Notify adapters that engine up after SSR
+            mLocApi->handleEngineUpEvent();
+        }
     }
     inline void locallog() const {
         LOC_LOGV("LocSsrMsg");
@@ -107,13 +111,17 @@ struct LocSsrMsg : public LocMsg {
 
 struct LocOpenMsg : public LocMsg {
     LocApiBase* mLocApi;
-    inline LocOpenMsg(LocApiBase* locApi) :
-            LocMsg(), mLocApi(locApi)
+    LocAdapterBase* mAdapter;
+    inline LocOpenMsg(LocApiBase* locApi, LocAdapterBase* adapter = nullptr) :
+            LocMsg(), mLocApi(locApi), mAdapter(adapter)
     {
         locallog();
     }
     inline virtual void proc() const {
-        mLocApi->open(mLocApi->getEvtMask());
+        if (LOC_API_ADAPTER_ERR_SUCCESS == mLocApi->open(mLocApi->getEvtMask()) &&
+            nullptr != mAdapter) {
+            mAdapter->handleEngineUpEvent();
+        }
     }
     inline void locallog() const {
         LOC_LOGv("LocOpen Mask: %" PRIx64 "\n", mLocApi->getEvtMask());
@@ -189,8 +197,8 @@ bool LocApiBase::isInSession()
 }
 
 bool LocApiBase::needReport(const UlpLocation& ulpLocation,
-                                   enum loc_sess_status status,
-                                   LocPosTechMask techMask)
+                            enum loc_sess_status status,
+                            LocPosTechMask techMask)
 {
     bool reported = false;
 
@@ -222,7 +230,7 @@ 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));
+            mMsgTask->sendMsg(new LocOpenMsg(this,  adapter));
             break;
         }
     }
@@ -295,8 +303,6 @@ void LocApiBase::updateNmeaMask(uint32_t mask)
 
 void LocApiBase::handleEngineUpEvent()
 {
-    LocDualContext::injectFeatureConfig(mContext);
-
     // loop through adapters, and deliver to all adapters.
     TO_ALL_LOCADAPTERS(mLocAdapters[i]->handleEngineUpEvent());
 }
@@ -374,6 +380,23 @@ void LocApiBase::reportDeleteAidingDataEvent(GnssAidingData& aidingData) {
     TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportDeleteAidingDataEvent(aidingData));
 }
 
+void LocApiBase::reportKlobucharIonoModel(GnssKlobucharIonoModel & ionoModel) {
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportKlobucharIonoModelEvent(ionoModel));
+}
+
+void LocApiBase::reportGnssAdditionalSystemInfo(GnssAdditionalSystemInfo& additionalSystemInfo) {
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_1ST_HANDLING_LOCADAPTERS(mLocAdapters[i]->reportGnssAdditionalSystemInfoEvent(
+            additionalSystemInfo));
+}
+
+void LocApiBase::sendNfwNotification(GnssNfwNotification& notification)
+{
+    // loop through adapters, and deliver to the first handling adapter.
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportNfwNotificationEvent(notification));
+
+}
 
 void LocApiBase::reportSv(GnssSvNotification& svNotify)
 {
@@ -411,14 +434,6 @@ void LocApiBase::reportSv(GnssSvNotification& 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.
@@ -511,11 +526,10 @@ void* LocApiBase :: getSibling()
 LocApiProxyBase* LocApiBase :: getLocApiProxy()
     DEFAULT_IMPL(NULL)
 
-void LocApiBase::reportGnssMeasurementData(GnssMeasurementsNotification& measurements,
-                                           int msInWeek)
+void LocApiBase::reportGnssMeasurements(GnssMeasurements& gnssMeasurements, int msInWeek)
 {
     // loop through adapters, and deliver to all adapters.
-    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportGnssMeasurementDataEvent(measurements, msInWeek));
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportGnssMeasurementsEvent(gnssMeasurements, msInWeek));
 }
 
 void LocApiBase::reportGnssSvIdConfig(const GnssSvIdConfig& config)
@@ -540,6 +554,41 @@ void LocApiBase::reportGnssSvTypeConfig(const GnssSvTypeConfig& config)
     TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportGnssSvTypeConfigEvent(config));
 }
 
+void LocApiBase::geofenceBreach(size_t count, uint32_t* hwIds, Location& location,
+                                GeofenceBreachType breachType, uint64_t timestamp)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->geofenceBreachEvent(count, hwIds, location, breachType,
+                                                            timestamp));
+}
+
+void LocApiBase::geofenceStatus(GeofenceStatusAvailable available)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->geofenceStatusEvent(available));
+}
+
+void LocApiBase::reportDBTPosition(UlpLocation &location, GpsLocationExtended &locationExtended,
+                                   enum loc_sess_status status, LocPosTechMask loc_technology_mask)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportPositionEvent(location, locationExtended, status,
+                                                            loc_technology_mask));
+}
+
+void LocApiBase::reportLocations(Location* locations, size_t count, BatchingMode batchingMode)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportLocationsEvent(locations, count, batchingMode));
+}
+
+void LocApiBase::reportCompletedTrips(uint32_t accumulated_distance)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportCompletedTripsEvent(accumulated_distance));
+}
+
+void LocApiBase::handleBatchStatusEvent(BatchingStatus batchStatus)
+{
+    TO_ALL_LOCADAPTERS(mLocAdapters[i]->reportBatchStatusChangeEvent(batchStatus));
+}
+
+
 enum loc_api_adapter_err LocApiBase::
    open(LOC_API_ADAPTER_EVENT_MASK_T /*mask*/)
 DEFAULT_IMPL(LOC_API_ADAPTER_ERR_SUCCESS)
@@ -588,10 +637,6 @@ void LocApiBase::
     atlCloseStatus(int /*handle*/, int /*is_succ*/)
 DEFAULT_IMPL()
 
-void LocApiBase::
-    setPositionMode(const LocPosMode& /*posMode*/)
-DEFAULT_IMPL()
-
 LocationError LocApiBase::
     setServerSync(const char* /*url*/, int /*len*/, LocServerType /*type*/)
 DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
@@ -667,6 +712,10 @@ DEFAULT_IMPL(0)
 GnssConfigLppeUserPlaneMask LocApiBase::convertLppeUp(const uint32_t /*lppeUserPlaneMask*/)
 DEFAULT_IMPL(0)
 
+LocationError LocApiBase::setEmergencyExtensionWindowSync(
+        const uint32_t /*emergencyExtensionSeconds*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
 void LocApiBase::
    getWwanZppFix()
 DEFAULT_IMPL()
@@ -721,7 +770,103 @@ LocationError LocApiBase::
     setPositionAssistedClockEstimatorMode(bool /*enabled*/)
 DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
 
-LocationError LocApiBase::
-    getGnssEnergyConsumed()
+LocationError LocApiBase::getGnssEnergyConsumed()
 DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+
+void LocApiBase::addGeofence(uint32_t /*clientId*/, const GeofenceOption& /*options*/,
+        const GeofenceInfo& /*info*/,
+        LocApiResponseData<LocApiGeofenceData>* /*adapterResponseData*/)
+DEFAULT_IMPL()
+
+void LocApiBase::removeGeofence(uint32_t /*hwId*/, uint32_t /*clientId*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::pauseGeofence(uint32_t /*hwId*/, uint32_t /*clientId*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::resumeGeofence(uint32_t /*hwId*/, uint32_t /*clientId*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::modifyGeofence(uint32_t /*hwId*/, uint32_t /*clientId*/,
+         const GeofenceOption& /*options*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::startTimeBasedTracking(const TrackingOptions& /*options*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::stopTimeBasedTracking(LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::startDistanceBasedTracking(uint32_t /*sessionId*/,
+        const LocationOptions& /*options*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::stopDistanceBasedTracking(uint32_t /*sessionId*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::startBatching(uint32_t /*sessionId*/, const LocationOptions& /*options*/,
+        uint32_t /*accuracy*/, uint32_t /*timeout*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::stopBatching(uint32_t /*sessionId*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+LocationError LocApiBase::startOutdoorTripBatchingSync(uint32_t /*tripDistance*/,
+        uint32_t /*tripTbf*/, uint32_t /*timeout*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::startOutdoorTripBatching(uint32_t /*tripDistance*/, uint32_t /*tripTbf*/,
+        uint32_t /*timeout*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+void LocApiBase::reStartOutdoorTripBatching(uint32_t /*ongoingTripDistance*/,
+        uint32_t /*ongoingTripInterval*/, uint32_t /*batchingTimeout,*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+LocationError LocApiBase::stopOutdoorTripBatchingSync(bool /*deallocBatchBuffer*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::stopOutdoorTripBatching(bool /*deallocBatchBuffer*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+LocationError LocApiBase::getBatchedLocationsSync(size_t /*count*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::getBatchedLocations(size_t /*count*/, LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+LocationError LocApiBase::getBatchedTripLocationsSync(size_t /*count*/,
+        uint32_t /*accumulatedDistance*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::getBatchedTripLocations(size_t /*count*/, uint32_t /*accumulatedDistance*/,
+        LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+LocationError LocApiBase::queryAccumulatedTripDistanceSync(uint32_t& /*accumulated_trip_distance*/,
+        uint32_t& /*numOfBatchedPositions*/)
+DEFAULT_IMPL(LOCATION_ERROR_SUCCESS)
+
+void LocApiBase::queryAccumulatedTripDistance(
+        LocApiResponseData<LocApiBatchData>* /*adapterResponseData*/)
+DEFAULT_IMPL()
+
+void LocApiBase::setBatchSize(size_t /*size*/)
+DEFAULT_IMPL()
+
+void LocApiBase::setTripBatchSize(size_t /*size*/)
+DEFAULT_IMPL()
+
+void LocApiBase::addToCallQueue(LocApiResponse* /*adapterResponse*/)
+DEFAULT_IMPL()
+
+
 } // namespace loc_core
diff --git a/core/LocApiBase.h b/core/LocApiBase.h
index e5dfebf..1c2afaf 100644
--- a/core/LocApiBase.h
+++ b/core/LocApiBase.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2014, 2016-2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2014, 2016-2019 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
@@ -40,6 +40,7 @@ namespace loc_core {
 
 class ContextBase;
 struct LocApiResponse;
+template <typename> struct LocApiResponseData;
 
 int hexcode(char *hexstring, int string_size,
             const char *data, int data_size);
@@ -163,7 +164,6 @@ public:
                         GnssDataNotification* pDataNotify = nullptr,
                         int msInWeek = -1);
     void reportSv(GnssSvNotification& svNotify);
-    void reportSvMeasurement(GnssSvMeasurementSet &svMeasurementSet);
     void reportSvPolynomial(GnssSvPolynomial &svPolynomial);
     void reportSvEphemeris(GnssSvEphemerisReport &svEphemeris);
     void reportStatus(LocGpsStatusValue status);
@@ -178,7 +178,7 @@ public:
     void requestATL(int connHandle, LocAGpsType agps_type, LocApnTypeMask apn_type_mask);
     void releaseATL(int connHandle);
     void requestNiNotify(GnssNiNotification &notify, const void* data);
-    void reportGnssMeasurementData(GnssMeasurementsNotification& measurements, int msInWeek);
+    void reportGnssMeasurements(GnssMeasurements& gnssMeasurements, int msInWeek);
     void reportWwanZppFix(LocGpsLocation &zppLoc);
     void reportZppBestAvailableFix(LocGpsLocation &zppLoc, GpsLocationExtended &location_extended,
             LocPosTechMask tech_mask);
@@ -187,102 +187,69 @@ public:
     void requestOdcpi(OdcpiRequestInfo& request);
     void reportGnssEngEnergyConsumedEvent(uint64_t energyConsumedSinceFirstBoot);
     void reportDeleteAidingDataEvent(GnssAidingData& aidingData);
+    void reportKlobucharIonoModel(GnssKlobucharIonoModel& ionoModel);
+    void reportGnssAdditionalSystemInfo(GnssAdditionalSystemInfo& additionalSystemInfo);
+    void sendNfwNotification(GnssNfwNotification& notification);
+
+    void geofenceBreach(size_t count, uint32_t* hwIds, Location& location,
+            GeofenceBreachType breachType, uint64_t timestamp);
+    void geofenceStatus(GeofenceStatusAvailable available);
+    void reportDBTPosition(UlpLocation &location,
+                           GpsLocationExtended &locationExtended,
+                           enum loc_sess_status status,
+                           LocPosTechMask loc_technology_mask);
+    void reportLocations(Location* locations, size_t count, BatchingMode batchingMode);
+    void reportCompletedTrips(uint32_t accumulated_distance);
+    void handleBatchStatusEvent(BatchingStatus batchStatus);
 
     // 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 void startFix(const LocPosMode& fixCriteria, LocApiResponse* adapterResponse);
-    virtual void
-        stopFix(LocApiResponse* adapterResponse);
-    virtual void
-        deleteAidingData(const GnssAidingData& data, LocApiResponse* adapterResponse);
-
-    virtual void
-        injectPosition(double latitude, double longitude, float accuracy);
-
-    virtual void
-        injectPosition(const GnssLocationInfoNotification &locationInfo, bool onDemandCpi=false);
-
-    virtual void
-        injectPosition(const Location& location, bool onDemandCpi);
-    virtual void
-        setTime(LocGpsUtcTime time, int64_t timeReference, int uncertainty);
-
- //   // TODO:: called from izatapipds
-    virtual enum loc_api_adapter_err
-        setXtraData(char* data, int length);
-
-    virtual void
-        atlOpenStatus(int handle, int is_succ, char* apn, uint32_t apnLen,
-                      AGpsBearerType bear, LocAGpsType agpsType,
-                      LocApnTypeMask mask);
-    virtual void
-        atlCloseStatus(int handle, int is_succ);
-    virtual void
-        setPositionMode(const LocPosMode& posMode);
-    virtual LocationError
-        setServerSync(const char* url, int len, LocServerType type);
-    virtual LocationError
-        setServerSync(unsigned int ip, int port, LocServerType type);
-    virtual void
-        informNiResponse(GnssNiResponse userResponse, const void* passThroughData);
+    virtual void stopFix(LocApiResponse* adapterResponse);
+    virtual void deleteAidingData(const GnssAidingData& data, LocApiResponse* adapterResponse);
+    virtual void injectPosition(double latitude, double longitude, float accuracy);
+    virtual void injectPosition(const GnssLocationInfoNotification &locationInfo,
+            bool onDemandCpi=false);
+    virtual void injectPosition(const Location& location, bool onDemandCpi);
+    virtual void setTime(LocGpsUtcTime time, int64_t timeReference, int uncertainty);
+    virtual enum loc_api_adapter_err setXtraData(char* data, int length);
+    virtual void atlOpenStatus(int handle, int is_succ, char* apn, uint32_t apnLen,
+            AGpsBearerType bear, LocAGpsType agpsType, LocApnTypeMask mask);
+    virtual void atlCloseStatus(int handle, int is_succ);
+    virtual LocationError setServerSync(const char* url, int len, LocServerType type);
+    virtual LocationError setServerSync(unsigned int ip, int port, LocServerType type);
+    virtual void informNiResponse(GnssNiResponse userResponse, const void* passThroughData);
     virtual LocationError setSUPLVersionSync(GnssConfigSuplVersion version);
-    virtual enum loc_api_adapter_err
-        setNMEATypesSync(uint32_t typesMask);
+    virtual enum loc_api_adapter_err setNMEATypesSync(uint32_t typesMask);
     virtual LocationError setLPPConfigSync(GnssConfigLppProfile profile);
-    virtual enum loc_api_adapter_err
-        setSensorPropertiesSync(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
-        setSensorPerfControlConfigSync(int controlMode,
-                               int accelSamplesPerBatch,
-                               int accelBatchesPerSec,
-                               int gyroSamplesPerBatch,
-                               int gyroBatchesPerSec,
-                               int accelSamplesPerBatchHigh,
-                               int accelBatchesPerSecHigh,
-                               int gyroSamplesPerBatchHigh,
-                               int gyroBatchesPerSecHigh,
-                               int algorithmConfig);
+    virtual enum loc_api_adapter_err setSensorPropertiesSync(
+            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 setSensorPerfControlConfigSync(int controlMode,
+            int accelSamplesPerBatch, int accelBatchesPerSec, int gyroSamplesPerBatch,
+            int gyroBatchesPerSec, int accelSamplesPerBatchHigh, int accelBatchesPerSecHigh,
+            int gyroSamplesPerBatchHigh, int gyroBatchesPerSecHigh, int algorithmConfig);
     virtual LocationError
-        setAGLONASSProtocolSync(GnssConfigAGlonassPositionProtocolMask aGlonassProtocol);
+            setAGLONASSProtocolSync(GnssConfigAGlonassPositionProtocolMask aGlonassProtocol);
     virtual LocationError setLPPeProtocolCpSync(GnssConfigLppeControlPlaneMask lppeCP);
     virtual LocationError setLPPeProtocolUpSync(GnssConfigLppeUserPlaneMask lppeUP);
     virtual GnssConfigSuplVersion convertSuplVersion(const uint32_t suplVersion);
     virtual GnssConfigLppProfile convertLppProfile(const uint32_t lppProfile);
     virtual GnssConfigLppeControlPlaneMask convertLppeCp(const uint32_t lppeControlPlaneMask);
     virtual GnssConfigLppeUserPlaneMask convertLppeUp(const uint32_t lppeUserPlaneMask);
+    virtual LocationError setEmergencyExtensionWindowSync(const uint32_t emergencyExtensionSeconds);
 
     virtual void getWwanZppFix();
     virtual void getBestAvailableZppFix();
-    virtual void installAGpsCert(const LocDerEncodedCertificate* pData,
-                                 size_t length,
-                                 uint32_t slotBitMask);
-    inline virtual void setInSession(bool inSession) {
-
-        (void)inSession;
-    }
-
-
-    void updateEvtMask();
-    void updateNmeaMask(uint32_t mask);
-
+    virtual void installAGpsCert(const LocDerEncodedCertificate* pData, size_t length,
+            uint32_t slotBitMask);
     virtual LocationError setGpsLockSync(GnssConfigGpsLock lock);
     virtual void requestForAidingData(GnssAidingDataSvMask svDataMask);
-
     virtual LocationError setXtraVersionCheckSync(uint32_t check);
-
     /* Requests for SV/Constellation Control */
     virtual LocationError setBlacklistSvSync(const GnssSvIdConfig& config);
     virtual void setBlacklistSv(const GnssSvIdConfig& config);
@@ -290,12 +257,55 @@ public:
     virtual void setConstellationControl(const GnssSvTypeConfig& config);
     virtual void getConstellationControl();
     virtual void resetConstellationControl();
-
-    virtual LocationError setConstrainedTuncMode(bool enabled,
-                                                 float tuncConstraint,
-                                                 uint32_t energyBudget);
+    virtual LocationError setConstrainedTuncMode(bool enabled, float tuncConstraint,
+            uint32_t energyBudget);
     virtual LocationError setPositionAssistedClockEstimatorMode(bool enabled);
     virtual LocationError getGnssEnergyConsumed();
+
+    virtual void addGeofence(uint32_t clientId, const GeofenceOption& options,
+            const GeofenceInfo& info, LocApiResponseData<LocApiGeofenceData>* adapterResponseData);
+    virtual void removeGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
+    virtual void pauseGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
+    virtual void resumeGeofence(uint32_t hwId, uint32_t clientId, LocApiResponse* adapterResponse);
+    virtual void modifyGeofence(uint32_t hwId, uint32_t clientId, const GeofenceOption& options,
+             LocApiResponse* adapterResponse);
+
+    virtual void startTimeBasedTracking(const TrackingOptions& options,
+             LocApiResponse* adapterResponse);
+    virtual void stopTimeBasedTracking(LocApiResponse* adapterResponse);
+    virtual void startDistanceBasedTracking(uint32_t sessionId, const LocationOptions& options,
+             LocApiResponse* adapterResponse);
+    virtual void stopDistanceBasedTracking(uint32_t sessionId,
+             LocApiResponse* adapterResponse = nullptr);
+    virtual void startBatching(uint32_t sessionId, const LocationOptions& options,
+            uint32_t accuracy, uint32_t timeout, LocApiResponse* adapterResponse);
+    virtual void stopBatching(uint32_t sessionId, LocApiResponse* adapterResponse);
+    virtual LocationError startOutdoorTripBatchingSync(uint32_t tripDistance,
+            uint32_t tripTbf, uint32_t timeout);
+    virtual void startOutdoorTripBatching(uint32_t tripDistance,
+            uint32_t tripTbf, uint32_t timeout, LocApiResponse* adapterResponse);
+    virtual void reStartOutdoorTripBatching(uint32_t ongoingTripDistance,
+            uint32_t ongoingTripInterval, uint32_t batchingTimeout,
+            LocApiResponse* adapterResponse);
+    virtual LocationError stopOutdoorTripBatchingSync(bool deallocBatchBuffer = true);
+    virtual void stopOutdoorTripBatching(bool deallocBatchBuffer = true,
+            LocApiResponse* adapterResponse = nullptr);
+    virtual LocationError getBatchedLocationsSync(size_t count);
+    virtual void getBatchedLocations(size_t count, LocApiResponse* adapterResponse);
+    virtual LocationError getBatchedTripLocationsSync(size_t count, uint32_t accumulatedDistance);
+    virtual void getBatchedTripLocations(size_t count, uint32_t accumulatedDistance,
+            LocApiResponse* adapterResponse);
+    virtual LocationError queryAccumulatedTripDistanceSync(uint32_t &accumulated_trip_distance,
+            uint32_t &numOfBatchedPositions);
+    virtual void queryAccumulatedTripDistance(
+            LocApiResponseData<LocApiBatchData>* adapterResponseData);
+    virtual void setBatchSize(size_t size);
+    virtual void setTripBatchSize(size_t size);
+    virtual void addToCallQueue(LocApiResponse* adapterResponse);
+
+    void updateEvtMask();
+    void updateNmeaMask(uint32_t mask);
+
 };
 
 typedef LocApiBase* (getLocApi_t)(LOC_API_ADAPTER_EVENT_MASK_T exMask,
diff --git a/core/LocContext.cpp b/core/LocContext.cpp
new file mode 100644
index 0000000..18d3f2d
--- /dev/null
+++ b/core/LocContext.cpp
@@ -0,0 +1,98 @@
+/* Copyright (c) 2011-2014, 2016-2019 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_Ctx"
+
+#include <cutils/sched_policy.h>
+#include <unistd.h>
+#include <LocContext.h>
+#include <msg_q.h>
+#include <log_util.h>
+#include <loc_log.h>
+
+namespace loc_core {
+
+const MsgTask* LocContext::mMsgTask = NULL;
+ContextBase* LocContext::mContext = NULL;
+// the name must be shorter than 15 chars
+const char* LocContext::mLocationHalName = "Loc_hal_worker";
+#ifndef USE_GLIB
+const char* LocContext::mLBSLibName = "liblbs_core.so";
+#else
+const char* LocContext::mLBSLibName = "liblbs_core.so.1";
+#endif
+
+pthread_mutex_t LocContext::mGetLocContextMutex = PTHREAD_MUTEX_INITIALIZER;
+
+const MsgTask* LocContext::getMsgTask(LocThread::tCreate tCreator,
+                                          const char* name, bool joinable)
+{
+    if (NULL == mMsgTask) {
+        mMsgTask = new MsgTask(tCreator, name, joinable);
+    }
+    return mMsgTask;
+}
+
+inline
+const MsgTask* LocContext::getMsgTask(const char* name, bool joinable) {
+    return getMsgTask((LocThread::tCreate)NULL, name, joinable);
+}
+
+ContextBase* LocContext::getLocContext(LocThread::tCreate tCreator,
+            LocMsg* firstMsg, const char* name, bool joinable)
+{
+    pthread_mutex_lock(&LocContext::mGetLocContextMutex);
+    LOC_LOGD("%s:%d]: querying ContextBase with tCreator", __func__, __LINE__);
+    if (NULL == mContext) {
+        LOC_LOGD("%s:%d]: creating msgTask with tCreator", __func__, __LINE__);
+        const MsgTask* msgTask = getMsgTask(tCreator, name, joinable);
+        mContext = new LocContext(msgTask);
+    }
+    pthread_mutex_unlock(&LocContext::mGetLocContextMutex);
+
+    if (firstMsg) {
+        mContext->sendMsg(firstMsg);
+    }
+
+    return mContext;
+}
+
+void LocContext :: injectFeatureConfig(ContextBase *curContext)
+{
+    LOC_LOGD("%s:%d]: Calling LBSProxy (%p) to inject feature config",
+             __func__, __LINE__, ((LocContext *)curContext)->mLBSProxy);
+    ((LocContext *)curContext)->mLBSProxy->injectFeatureConfig(curContext);
+}
+
+LocContext::LocContext(const MsgTask* msgTask) :
+    ContextBase(msgTask, 0, mLBSLibName)
+{
+}
+
+}
diff --git a/core/LocDualContext.h b/core/LocContext.h
index 3b3ce2c..fb7d009 100644
--- a/core/LocDualContext.h
+++ b/core/LocContext.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2014, 2017 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2014, 2017-2019 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
@@ -26,8 +26,8 @@
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
-#ifndef __LOC_ENG_CONTEXT__
-#define __LOC_ENG_CONTEXT__
+#ifndef __LOC_CONTEXT__
+#define __LOC_CONTEXT__
 
 #include <stdbool.h>
 #include <ctype.h>
@@ -36,36 +36,26 @@
 
 namespace loc_core {
 
-class LocDualContext : public ContextBase {
+class LocContext : public ContextBase {
     static const MsgTask* mMsgTask;
-    static ContextBase* mFgContext;
-    static ContextBase* mBgContext;
-    static ContextBase* mInjectContext;
+    static ContextBase* mContext;
     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;
 
 protected:
-    LocDualContext(const MsgTask* msgTask,
-                   LOC_API_ADAPTER_EVENT_MASK_T exMask);
-    inline virtual ~LocDualContext() {}
+    LocContext(const MsgTask* msgTask);
+    inline virtual ~LocContext() {}
 
 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,
+    static ContextBase* getLocContext(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);
+    inline static ContextBase* getLocContext(const char* name, bool joinable = true) {
+        return getLocContext(NULL, NULL, name, joinable);
     }
 
     static void injectFeatureConfig(ContextBase *context);
@@ -73,4 +63,4 @@ public:
 
 }
 
-#endif //__LOC_ENG_CONTEXT__
+#endif //__LOC_CONTEXT__
diff --git a/core/LocDualContext.cpp b/core/LocDualContext.cpp
deleted file mode 100644
index 180d9dc..0000000
--- a/core/LocDualContext.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/* 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 <log_util.h>
-#include <loc_log.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;
-// 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)
-{
-}
-
-}
diff --git a/core/Makefile.am b/core/Makefile.am
index 53059e4..ffd9357 100644
--- a/core/Makefile.am
+++ b/core/Makefile.am
@@ -15,7 +15,7 @@ libloc_core_la_h_sources = \
            LocApiBase.h \
            LocAdapterBase.h \
            ContextBase.h \
-           LocDualContext.h \
+           LocContext.h \
            LBSProxyBase.h \
            loc_core_log.h \
            LocAdapterProxyBase.h \
@@ -34,7 +34,7 @@ libloc_core_la_c_sources = \
            LocApiBase.cpp \
            LocAdapterBase.cpp \
            ContextBase.cpp \
-           LocDualContext.cpp \
+           LocContext.cpp \
            loc_core_log.cpp \
            data-items/DataItemsFactoryProxy.cpp \
            SystemStatusOsObserver.cpp \
diff --git a/core/SystemStatus.cpp b/core/SystemStatus.cpp
index f4316ca..6ef4993 100644
--- a/core/SystemStatus.cpp
+++ b/core/SystemStatus.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017, 2019, 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
@@ -1682,10 +1682,12 @@ bool SystemStatus::setDefaultGnssEngineStates(void)
 
 @return     true when successfully done
 ******************************************************************************/
-bool SystemStatus::eventConnectionStatus(bool connected, int8_t type)
+bool SystemStatus::eventConnectionStatus(bool connected, int8_t type,
+                                         bool roaming, NetworkHandle networkHandle)
 {
     // send networkinof dataitem to systemstatus observer clients
-    SystemStatusNetworkInfo s(type, "", "", connected);
+    SystemStatusNetworkInfo s(type, "", "", connected, roaming,
+                              (uint64_t) networkHandle);
     mSysStatusObsvr.notify({&s});
 
     return true;
diff --git a/core/SystemStatus.h b/core/SystemStatus.h
index 9422322..73a220a 100644
--- a/core/SystemStatus.h
+++ b/core/SystemStatus.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -32,6 +32,8 @@
 #include <stdint.h>
 #include <sys/time.h>
 #include <vector>
+#include <algorithm>
+#include <iterator>
 #include <loc_pla.h>
 #include <log_util.h>
 #include <MsgTask.h>
@@ -467,7 +469,8 @@ public:
             std::string typeName="",
             string subTypeName="",
             bool connected=false,
-            bool roaming=false) :
+            bool roaming=false,
+            uint64_t networkHandle=NETWORK_HANDLE_UNKNOWN) :
             NetworkInfoDataItemBase(
                     (NetworkType)type,
                     type,
@@ -475,7 +478,8 @@ public:
                     subTypeName,
                     connected && (!roaming),
                     connected,
-                    roaming),
+                    roaming,
+                    networkHandle),
             mSrcObjPtr(nullptr) {}
     inline SystemStatusNetworkInfo(const NetworkInfoDataItemBase& itemBase) :
             NetworkInfoDataItemBase(itemBase),
@@ -487,16 +491,24 @@ public:
     }
     inline virtual SystemStatusItemBase& collate(SystemStatusItemBase& curInfo) {
         uint64_t allTypes = (static_cast<SystemStatusNetworkInfo&>(curInfo)).mAllTypes;
+        uint64_t networkHandle =
+                (static_cast<SystemStatusNetworkInfo&>(curInfo)).mNetworkHandle;
+        int32_t type = (static_cast<SystemStatusNetworkInfo&>(curInfo)).mType;
         if (mConnected) {
             mAllTypes |= allTypes;
+            mAllNetworkHandles[type] = networkHandle;
         } else if (0 != mAllTypes) {
             mAllTypes = (allTypes & (~mAllTypes));
+            mAllNetworkHandles[type] = NETWORK_HANDLE_UNKNOWN;
         } // else (mConnected == false && mAllTypes == 0)
           // we keep mAllTypes as 0, which means no more connections.
 
         if (nullptr != mSrcObjPtr) {
             // this is critical, changing mAllTypes of the original obj
             mSrcObjPtr->mAllTypes = mAllTypes;
+            memcpy(mSrcObjPtr->mAllNetworkHandles,
+                   mAllNetworkHandles,
+                   sizeof(mSrcObjPtr->mAllNetworkHandles));
         }
         return *this;
     }
@@ -830,7 +842,8 @@ public:
     bool setNmeaString(const char *data, uint32_t len);
     bool getReport(SystemStatusReports& reports, bool isLatestonly = false) const;
     bool setDefaultGnssEngineStates(void);
-    bool eventConnectionStatus(bool connected, int8_t type);
+    bool eventConnectionStatus(bool connected, int8_t type,
+                               bool roaming, NetworkHandle networkHandle);
 };
 
 } // namespace loc_core
diff --git a/core/data-items/DataItemConcreteTypesBase.h b/core/data-items/DataItemConcreteTypesBase.h
index 44be5f9..552d46a 100644
--- a/core/data-items/DataItemConcreteTypesBase.h
+++ b/core/data-items/DataItemConcreteTypesBase.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2017, 2019, 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
@@ -34,6 +34,7 @@
 #include <cstring>
 #include <DataItemId.h>
 #include <IDataItemCore.h>
+#include <gps_extended_c.h>
 
 #define MAC_ADDRESS_LENGTH    6
 // MAC address length in bytes
@@ -222,7 +223,7 @@ protected:
 class NetworkInfoDataItemBase : public IDataItemCore {
 public:
     enum NetworkType {
-        TYPE_MOBILE,
+        TYPE_MOBILE = 0,
         TYPE_WIFI,
         TYPE_ETHERNET,
         TYPE_BLUETOOTH,
@@ -236,7 +237,7 @@ public:
     };
     NetworkInfoDataItemBase(
     NetworkType initialType, int32_t type, string typeName, string subTypeName,
-    bool available, bool connected, bool roaming ):
+    bool available, bool connected, bool roaming, uint64_t networkHandle ):
             mAllTypes(typeToAllTypes(initialType)),
             mType(type),
             mTypeName(typeName),
@@ -244,7 +245,12 @@ public:
             mAvailable(available),
             mConnected(connected),
             mRoaming(roaming),
-            mId(NETWORKINFO_DATA_ITEM_ID) {}
+            mNetworkHandle(networkHandle),
+            mId(NETWORKINFO_DATA_ITEM_ID) {
+                memset (&mAllNetworkHandles, NETWORK_HANDLE_UNKNOWN,
+                        sizeof (mAllNetworkHandles));
+                mAllNetworkHandles[type] = networkHandle;
+            }
     virtual ~NetworkInfoDataItemBase() {}
     inline virtual DataItemId getId() { return mId; }
     virtual void stringify(string& /*valueStr*/) {}
@@ -253,6 +259,9 @@ public:
         return (NetworkType)mType;
     }
     inline uint64_t getAllTypes() { return mAllTypes; }
+    inline uint64_t getNetworkHandle(NetworkType type) {
+        return mAllNetworkHandles[type];
+    }
     // Data members
     uint64_t mAllTypes;
     int32_t mType;
@@ -261,6 +270,8 @@ public:
     bool mAvailable;
     bool mConnected;
     bool mRoaming;
+    uint64_t mAllNetworkHandles[TYPE_UNKNOWN + 1];
+    uint64_t mNetworkHandle;
 protected:
     DataItemId mId;
     inline uint64_t typeToAllTypes(NetworkType type) {
diff --git a/etc/Android.mk b/etc/Android.mk
index db59eed..32a0e9c 100644
--- a/etc/Android.mk
+++ b/etc/Android.mk
@@ -1,13 +1,22 @@
 ifneq ($(BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET),true)
 LOCAL_PATH := $(call my-dir)
-include $(CLEAR_VARS)
 
+include $(CLEAR_VARS)
 LOCAL_MODULE := gps.conf
+LOCAL_VENDOR_MODULE := true
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH  := $(TARGET_OUT_VENDOR)/etc/
 LOCAL_SRC_FILES := gps.conf
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_ETC)
+include $(BUILD_PREBUILT)
 
+include $(CLEAR_VARS)
+LOCAL_MODULE := flp.conf
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := ETC
+LOCAL_SRC_FILES := flp.conf
+LOCAL_MODULE_PATH  := $(TARGET_OUT_VENDOR_ETC)
 include $(BUILD_PREBUILT)
 endif
 
diff --git a/etc/flp.conf b/etc/flp.conf
new file mode 100644
index 0000000..65d54d3
--- /dev/null
+++ b/etc/flp.conf
@@ -0,0 +1,60 @@
+###################################
+#####       FLP settings      #####
+###################################
+
+###################################
+# FLP BATCH SIZE
+###################################
+# The number of batched locations
+# requested to modem. The desired number
+# defined below may not be satisfied, as
+# the modem can only return the number
+# of batched locations that can be allocated,
+# which is limited by memory. The default
+# batch size defined as 20 as below.
+BATCH_SIZE=20
+
+###################################
+# FLP OUTDOOR TRIP BATCH SIZE
+###################################
+# The number of batched locations
+# requested to modem for outdoor
+# trip batching. The desired number
+# defined below may not be satisfied, as
+# the modem can only return the number
+# of batched locations that can be allocated,
+# which is limited by memory. The default
+# trip batch size defined as 600 as below.
+OUTDOOR_TRIP_BATCH_SIZE=600
+
+###################################
+# FLP BATCHING SESSION TIMEOUT
+###################################
+# Duration with which batch session timeout
+# happens in milliseconds. If not specified
+# or set to zero, batching session timeout
+# defaults to 20 seconds by the modem.
+# BATCH_SESSION_TIMEOUT=20000
+
+###################################
+# FLP BATCHING ACCURACY
+###################################
+# Set to one of the defined values below
+# to define the accuracy of batching.
+# If not specified, accuracy defaults
+# to LOW.
+# FLP BATCHING ACCURACY values:
+# Low accuracy = 0
+# Medium accuracy = 1
+# High accuracy = 2
+ACCURACY=1
+
+####################################
+# By default if network fixes are not sensor assisted
+# these fixes must be dropped. This parameter adds an exception
+# for targets where there is no PDR and we still want to
+# report out network fixes
+# 0: MUST NOT ALLOW NETWORK FIXES
+# 1: ALLOW NETWORK FIXES
+####################################
+ALLOW_NETWORK_FIXES = 0
diff --git a/etc/gps.conf b/etc/gps.conf
index e5be385..82a7b3c 100644
--- a/etc/gps.conf
+++ b/etc/gps.conf
@@ -54,9 +54,8 @@ SUPL_VER=0x10000
 # MSB = 0x02
 # MSA = 0x04
 # ON_DEMAND_TIME = 0x10
-# GEOFENCE = 0x20
-# default = ON_DEMAND_TIME | MSA | MSB | SCHEDULING | GEOFENCE
-CAPABILITIES=0x37
+# default = ON_DEMAND_TIME | MSA | MSB | SCHEDULING
+CAPABILITIES=0x17
 
 # Accuracy threshold for intermediate positions
 # less accurate positions are ignored, 0 for passing all positions
diff --git a/geofence/Android.mk b/geofence/Android.mk
new file mode 100644
index 0000000..6e9e870
--- /dev/null
+++ b/geofence/Android.mk
@@ -0,0 +1,36 @@
+ifneq ($(BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE),)
+ifneq ($(BUILD_TINY_ANDROID),true)
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libgeofencing
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES:= \
+    GeofenceAdapter.cpp \
+    location_geofence.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+        libutils \
+        libcutils \
+        libgps.utils \
+        liblog \
+        libloc_core \
+        liblbs_core
+
+LOCAL_HEADER_LIBRARIES := \
+    libgps.utils_headers \
+    libloc_core_headers \
+    libloc_pla_headers \
+    liblocation_api_headers
+
+LOCAL_PRELINK_MODULE := false
+LOCAL_CFLAGS += $(GNSS_CFLAGS)
+include $(BUILD_SHARED_LIBRARY)
+
+endif # not BUILD_TINY_ANDROID
+endif # BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE
+
diff --git a/geofence/GeofenceAdapter.cpp b/geofence/GeofenceAdapter.cpp
new file mode 100644
index 0000000..b8746fb
--- /dev/null
+++ b/geofence/GeofenceAdapter.cpp
@@ -0,0 +1,867 @@
+/* Copyright (c) 2013-2019, 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_GeofenceAdapter"
+
+#include <GeofenceAdapter.h>
+#include "loc_log.h"
+#include <log_util.h>
+#include <string>
+
+using namespace loc_core;
+
+GeofenceAdapter::GeofenceAdapter() :
+    LocAdapterBase(0,
+                    LocContext::getLocContext(
+                        NULL,
+                        NULL,
+                        LocContext::mLocationHalName,
+                        false),
+                    true /*isMaster*/)
+{
+    LOC_LOGD("%s]: Constructor", __func__);
+}
+
+void
+GeofenceAdapter::stopClientSessions(LocationAPI* client)
+{
+    LOC_LOGD("%s]: client %p", __func__, client);
+
+
+    for (auto it = mGeofenceIds.begin(); it != mGeofenceIds.end();) {
+        uint32_t hwId = it->second;
+        GeofenceKey key(it->first);
+        if (client == key.client) {
+            it = mGeofenceIds.erase(it);
+            mLocApi->removeGeofence(hwId, key.id,
+                    new LocApiResponse(*getContext(),
+                    [this, hwId] (LocationError err) {
+                if (LOCATION_ERROR_SUCCESS == err) {
+                    auto it2 = mGeofences.find(hwId);
+                    if (it2 != mGeofences.end()) {
+                        mGeofences.erase(it2);
+                    } else {
+                        LOC_LOGE("%s]:geofence item to erase not found. hwId %u", __func__, hwId);
+                    }
+                }
+            }));
+            continue;
+        }
+        ++it; // increment only when not erasing an iterator
+    }
+
+}
+
+void
+GeofenceAdapter::updateClientsEventMask()
+{
+    LOC_API_ADAPTER_EVENT_MASK_T mask = 0;
+    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
+        if (it->second.geofenceBreachCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_BATCHED_GENFENCE_BREACH_REPORT;
+            mask |= LOC_API_ADAPTER_BIT_REPORT_GENFENCE_DWELL;
+        }
+        if (it->second.geofenceStatusCb != nullptr) {
+            mask |= LOC_API_ADAPTER_BIT_GEOFENCE_GEN_ALERT;
+        }
+    }
+    updateEvtMask(mask, LOC_REGISTRATION_MASK_SET);
+}
+
+LocationError
+GeofenceAdapter::getHwIdFromClient(LocationAPI* client, uint32_t clientId, uint32_t& hwId)
+{
+    GeofenceKey key(client, clientId);
+    auto it = mGeofenceIds.find(key);
+    if (it != mGeofenceIds.end()) {
+        hwId = it->second;
+        return LOCATION_ERROR_SUCCESS;
+    }
+    return LOCATION_ERROR_ID_UNKNOWN;
+}
+
+LocationError
+GeofenceAdapter::getGeofenceKeyFromHwId(uint32_t hwId, GeofenceKey& key)
+{
+    auto it = mGeofences.find(hwId);
+    if (it != mGeofences.end()) {
+        key = it->second.key;
+        return LOCATION_ERROR_SUCCESS;
+    }
+    return LOCATION_ERROR_ID_UNKNOWN;
+}
+
+void
+GeofenceAdapter::handleEngineUpEvent()
+{
+    struct MsgSSREvent : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        inline MsgSSREvent(GeofenceAdapter& adapter) :
+            LocMsg(),
+            mAdapter(adapter) {}
+        virtual void proc() const {
+            mAdapter.setEngineCapabilitiesKnown(true);
+            mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
+            mAdapter.restartGeofences();
+            for (auto msg: mAdapter.mPendingMsgs) {
+                mAdapter.sendMsg(msg);
+            }
+            mAdapter.mPendingMsgs.clear();
+        }
+    };
+
+    sendMsg(new MsgSSREvent(*this));
+}
+
+void
+GeofenceAdapter::restartGeofences()
+{
+    if (mGeofences.empty()) {
+        return;
+    }
+
+    GeofencesMap oldGeofences(mGeofences);
+    mGeofences.clear();
+    mGeofenceIds.clear();
+
+    for (auto it = oldGeofences.begin(); it != oldGeofences.end(); it++) {
+        GeofenceObject object = it->second;
+        GeofenceOption options = {sizeof(GeofenceOption),
+                                   object.breachMask,
+                                   object.responsiveness,
+                                   object.dwellTime};
+        GeofenceInfo info = {sizeof(GeofenceInfo),
+                             object.latitude,
+                             object.longitude,
+                             object.radius};
+        mLocApi->addGeofence(object.key.id,
+                              options,
+                              info,
+                              new LocApiResponseData<LocApiGeofenceData>(*getContext(),
+                [this, object, options, info] (LocationError err, LocApiGeofenceData data) {
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (true == object.paused) {
+                    mLocApi->pauseGeofence(data.hwId, object.key.id,
+                            new LocApiResponse(*getContext(), [] (LocationError err ) {}));
+                }
+                saveGeofenceItem(object.key.client, object.key.id, data.hwId, options, info);
+            }
+        }));
+    }
+}
+
+void
+GeofenceAdapter::reportResponse(LocationAPI* client, 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]: client %p ids %s errs %s",
+                 __func__, client, idsString.c_str(), errsString.c_str());
+    }
+
+    auto it = mClientData.find(client);
+    if (it != mClientData.end() && it->second.collectiveResponseCb != nullptr) {
+        it->second.collectiveResponseCb(count, errs, ids);
+    } else {
+        LOC_LOGE("%s]: client %p response not found in info", __func__, client);
+    }
+}
+
+uint32_t*
+GeofenceAdapter::addGeofencesCommand(LocationAPI* client, size_t count, GeofenceOption* options,
+        GeofenceInfo* infos)
+{
+    LOC_LOGD("%s]: client %p count %zu", __func__, client, count);
+
+    struct MsgAddGeofences : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        size_t mCount;
+        uint32_t* mIds;
+        GeofenceOption* mOptions;
+        GeofenceInfo* mInfos;
+        inline MsgAddGeofences(GeofenceAdapter& adapter,
+                               LocApiBase& api,
+                               LocationAPI* client,
+                               size_t count,
+                               uint32_t* ids,
+                               GeofenceOption* options,
+                               GeofenceInfo* infos) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mCount(count),
+            mIds(ids),
+            mOptions(options),
+            mInfos(infos) {}
+        inline virtual void proc() const {
+            LocationError* errs = new LocationError[mCount];
+            if (nullptr == errs) {
+                LOC_LOGE("%s]: new failed to allocate errs", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                if (NULL == mIds || NULL == mOptions || NULL == mInfos) {
+                    errs[i] = LOCATION_ERROR_INVALID_PARAMETER;
+                } else {
+                    mApi.addGeofence(mIds[i],
+                             mOptions[i],
+                             mInfos[i],
+                             new LocApiResponseData<LocApiGeofenceData>(*mAdapter.getContext(),
+                                    [&mAdapter = mAdapter, mOptions = mOptions, mClient = mClient,
+                                    mCount = mCount, mIds = mIds, mInfos = mInfos, errs, i]
+                                    (LocationError err, LocApiGeofenceData data) {
+                        if (LOCATION_ERROR_SUCCESS == err) {
+                            mAdapter.saveGeofenceItem(mClient,
+                                                      mIds[i],
+                                                      data.hwId,
+                                                      mOptions[i],
+                                                      mInfos[i]);
+                        }
+                        errs[i] = err;
+
+                        // Send aggregated response on last item and cleanup
+                        if (i == mCount-1) {
+                            mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                            delete[] errs;
+                            delete[] mIds;
+                            delete[] mOptions;
+                            delete[] mInfos;
+                        }
+                    }));
+                }
+            }
+        }
+    };
+
+    if (0 == count) {
+        return NULL;
+    }
+    uint32_t* ids = new uint32_t[count];
+    if (nullptr == ids) {
+        LOC_LOGE("%s]: new failed to allocate ids", __func__);
+        return NULL;
+    }
+    if (NULL != ids) {
+        for (size_t i=0; i < count; ++i) {
+            ids[i] = generateSessionId();
+        }
+    }
+    GeofenceOption* optionsCopy;
+    if (options == NULL) {
+        optionsCopy = NULL;
+    } else {
+        optionsCopy = new GeofenceOption[count];
+        if (nullptr == optionsCopy) {
+            LOC_LOGE("%s]: new failed to allocate optionsCopy", __func__);
+            return NULL;
+        }
+        COPY_IF_NOT_NULL(optionsCopy, options, count);
+    }
+    GeofenceInfo* infosCopy;
+    if (infos == NULL) {
+        infosCopy = NULL;
+    } else {
+        infosCopy = new GeofenceInfo[count];
+        if (nullptr == infosCopy) {
+            LOC_LOGE("%s]: new failed to allocate infosCopy", __func__);
+            return NULL;
+        }
+        COPY_IF_NOT_NULL(infosCopy, infos, count);
+    }
+
+    sendMsg(new MsgAddGeofences(*this, *mLocApi, client, count, ids, optionsCopy, infosCopy));
+    return ids;
+}
+
+void
+GeofenceAdapter::removeGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    LOC_LOGD("%s]: client %p count %zu", __func__, client, count);
+
+    struct MsgRemoveGeofences : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        size_t mCount;
+        uint32_t* mIds;
+        inline MsgRemoveGeofences(GeofenceAdapter& adapter,
+                                  LocApiBase& api,
+                                  LocationAPI* client,
+                                  size_t count,
+                                  uint32_t* ids) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mCount(count),
+            mIds(ids) {}
+        inline virtual void proc() const  {
+            LocationError* errs = new LocationError[mCount];
+            if (nullptr == errs) {
+                LOC_LOGE("%s]: new failed to allocate errs", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                mApi.addToCallQueue(new LocApiResponse(*mAdapter.getContext(),
+                        [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                        &mApi = mApi, errs, i] (LocationError err ) {
+                    uint32_t hwId = 0;
+                    errs[i] = mAdapter.getHwIdFromClient(mClient, mIds[i], hwId);
+                    if (LOCATION_ERROR_SUCCESS == errs[i]) {
+                        mApi.removeGeofence(hwId, mIds[i],
+                        new LocApiResponse(*mAdapter.getContext(),
+                        [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                        hwId, errs, i] (LocationError err ) {
+                            if (LOCATION_ERROR_SUCCESS == err) {
+                                mAdapter.removeGeofenceItem(hwId);
+                            }
+                            errs[i] = err;
+
+                            // Send aggregated response on last item and cleanup
+                            if (i == mCount-1) {
+                                mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                                delete[] errs;
+                                delete[] mIds;
+                            }
+                        }));
+                    } else {
+                        // Send aggregated response on last item and cleanup
+                        if (i == mCount-1) {
+                            mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                            delete[] errs;
+                            delete[] mIds;
+                        }
+                    }
+                }));
+            }
+        }
+    };
+
+    if (0 == count) {
+        return;
+    }
+    uint32_t* idsCopy = new uint32_t[count];
+    if (nullptr == idsCopy) {
+        LOC_LOGE("%s]: new failed to allocate idsCopy", __func__);
+        return;
+    }
+    COPY_IF_NOT_NULL(idsCopy, ids, count);
+    sendMsg(new MsgRemoveGeofences(*this, *mLocApi, client, count, idsCopy));
+}
+
+void
+GeofenceAdapter::pauseGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    LOC_LOGD("%s]: client %p count %zu", __func__, client, count);
+
+    struct MsgPauseGeofences : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        size_t mCount;
+        uint32_t* mIds;
+        inline MsgPauseGeofences(GeofenceAdapter& adapter,
+                                 LocApiBase& api,
+                                 LocationAPI* client,
+                                 size_t count,
+                                 uint32_t* ids) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mCount(count),
+            mIds(ids) {}
+        inline virtual void proc() const  {
+            LocationError* errs = new LocationError[mCount];
+            if (nullptr == errs) {
+                LOC_LOGE("%s]: new failed to allocate errs", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                mApi.addToCallQueue(new LocApiResponse(*mAdapter.getContext(),
+                        [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                        &mApi = mApi, errs, i] (LocationError err ) {
+                    uint32_t hwId = 0;
+                    errs[i] = mAdapter.getHwIdFromClient(mClient, mIds[i], hwId);
+                    if (LOCATION_ERROR_SUCCESS == errs[i]) {
+                        mApi.pauseGeofence(hwId, mIds[i], new LocApiResponse(*mAdapter.getContext(),
+                        [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                        hwId, errs, i] (LocationError err ) {
+                            if (LOCATION_ERROR_SUCCESS == err) {
+                                mAdapter.pauseGeofenceItem(hwId);
+                            }
+                            errs[i] = err;
+
+                            // Send aggregated response on last item and cleanup
+                            if (i == mCount-1) {
+                                mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                                delete[] errs;
+                                delete[] mIds;
+                            }
+                        }));
+                    } else {
+                        // Send aggregated response on last item and cleanup
+                        if (i == mCount-1) {
+                            mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                            delete[] errs;
+                            delete[] mIds;
+                        }
+                    }
+                }));
+            }
+        }
+    };
+
+    if (0 == count) {
+        return;
+    }
+    uint32_t* idsCopy = new uint32_t[count];
+    if (nullptr == idsCopy) {
+        LOC_LOGE("%s]: new failed to allocate idsCopy", __func__);
+        return;
+    }
+    COPY_IF_NOT_NULL(idsCopy, ids, count);
+    sendMsg(new MsgPauseGeofences(*this, *mLocApi, client, count, idsCopy));
+}
+
+void
+GeofenceAdapter::resumeGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    LOC_LOGD("%s]: client %p count %zu", __func__, client, count);
+
+    struct MsgResumeGeofences : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        size_t mCount;
+        uint32_t* mIds;
+        inline MsgResumeGeofences(GeofenceAdapter& adapter,
+                                  LocApiBase& api,
+                                  LocationAPI* client,
+                                  size_t count,
+                                  uint32_t* ids) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mCount(count),
+            mIds(ids) {}
+        inline virtual void proc() const  {
+            LocationError* errs = new LocationError[mCount];
+            if (nullptr == errs) {
+                LOC_LOGE("%s]: new failed to allocate errs", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                mApi.addToCallQueue(new LocApiResponse(*mAdapter.getContext(),
+                        [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                        &mApi = mApi, errs, i] (LocationError err ) {
+                    uint32_t hwId = 0;
+                    errs[i] = mAdapter.getHwIdFromClient(mClient, mIds[i], hwId);
+                    if (LOCATION_ERROR_SUCCESS == errs[i]) {
+                        mApi.resumeGeofence(hwId, mIds[i],
+                                new LocApiResponse(*mAdapter.getContext(),
+                                [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, hwId,
+                                errs, mIds = mIds, i] (LocationError err ) {
+                            if (LOCATION_ERROR_SUCCESS == err) {
+                                errs[i] = err;
+
+                                mAdapter.resumeGeofenceItem(hwId);
+                                // Send aggregated response on last item and cleanup
+                                if (i == mCount-1) {
+                                    mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                                    delete[] errs;
+                                    delete[] mIds;
+                                }
+                            }
+                        }));
+                    } else {
+                        // Send aggregated response on last item and cleanup
+                        if (i == mCount-1) {
+                            mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                            delete[] errs;
+                            delete[] mIds;
+                        }
+                    }
+                }));
+            }
+        }
+    };
+
+    if (0 == count) {
+        return;
+    }
+    uint32_t* idsCopy = new uint32_t[count];
+    if (nullptr == idsCopy) {
+        LOC_LOGE("%s]: new failed to allocate idsCopy", __func__);
+        return;
+    }
+    COPY_IF_NOT_NULL(idsCopy, ids, count);
+    sendMsg(new MsgResumeGeofences(*this, *mLocApi, client, count, idsCopy));
+}
+
+void
+GeofenceAdapter::modifyGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids,
+        GeofenceOption* options)
+{
+    LOC_LOGD("%s]: client %p count %zu", __func__, client, count);
+
+    struct MsgModifyGeofences : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        LocApiBase& mApi;
+        LocationAPI* mClient;
+        size_t mCount;
+        uint32_t* mIds;
+        GeofenceOption* mOptions;
+        inline MsgModifyGeofences(GeofenceAdapter& adapter,
+                                  LocApiBase& api,
+                                  LocationAPI* client,
+                                  size_t count,
+                                  uint32_t* ids,
+                                  GeofenceOption* options) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mClient(client),
+            mCount(count),
+            mIds(ids),
+            mOptions(options) {}
+        inline virtual void proc() const  {
+            LocationError* errs = new LocationError[mCount];
+            if (nullptr == errs) {
+                LOC_LOGE("%s]: new failed to allocate errs", __func__);
+                return;
+            }
+            for (size_t i=0; i < mCount; ++i) {
+                if (NULL == mIds || NULL == mOptions) {
+                    errs[i] = LOCATION_ERROR_INVALID_PARAMETER;
+                } else {
+                    mApi.addToCallQueue(new LocApiResponse(*mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mCount = mCount, mClient = mClient, mIds = mIds,
+                            &mApi = mApi, mOptions = mOptions, errs, i] (LocationError err ) {
+                        uint32_t hwId = 0;
+                        errs[i] = mAdapter.getHwIdFromClient(mClient, mIds[i], hwId);
+                        if (LOCATION_ERROR_SUCCESS == errs[i]) {
+                            mApi.modifyGeofence(hwId, mIds[i], mOptions[i],
+                                    new LocApiResponse(*mAdapter.getContext(),
+                                    [&mAdapter = mAdapter, mCount = mCount, mClient = mClient,
+                                    mIds = mIds, mOptions = mOptions, hwId, errs, i]
+                                    (LocationError err ) {
+                                if (LOCATION_ERROR_SUCCESS == err) {
+                                    errs[i] = err;
+
+                                    mAdapter.modifyGeofenceItem(hwId, mOptions[i]);
+                                }
+                                // Send aggregated response on last item and cleanup
+                                if (i == mCount-1) {
+                                    mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                                    delete[] errs;
+                                    delete[] mIds;
+                                    delete[] mOptions;
+                                }
+                            }));
+                        } else {
+                            // Send aggregated response on last item and cleanup
+                            if (i == mCount-1) {
+                                mAdapter.reportResponse(mClient, mCount, errs, mIds);
+                                delete[] errs;
+                                delete[] mIds;
+                                delete[] mOptions;
+                            }
+                        }
+                    }));
+                }
+            }
+        }
+    };
+
+    if (0 == count) {
+        return;
+    }
+    uint32_t* idsCopy = new uint32_t[count];
+    if (nullptr == idsCopy) {
+        LOC_LOGE("%s]: new failed to allocate idsCopy", __func__);
+        return;
+    }
+    COPY_IF_NOT_NULL(idsCopy, ids, count);
+    GeofenceOption* optionsCopy;
+    if (options == NULL) {
+        optionsCopy = NULL;
+    } else {
+        optionsCopy = new GeofenceOption[count];
+        if (nullptr == optionsCopy) {
+            LOC_LOGE("%s]: new failed to allocate optionsCopy", __func__);
+            return;
+        }
+        COPY_IF_NOT_NULL(optionsCopy, options, count);
+    }
+
+    sendMsg(new MsgModifyGeofences(*this, *mLocApi, client, count, idsCopy, optionsCopy));
+}
+
+void
+GeofenceAdapter::saveGeofenceItem(LocationAPI* client, uint32_t clientId, uint32_t hwId,
+        const GeofenceOption& options, const GeofenceInfo& info)
+{
+    LOC_LOGD("%s]: hwId %u client %p clientId %u", __func__, hwId, client, clientId);
+    GeofenceKey key(client, clientId);
+    GeofenceObject object = {key,
+                             options.breachTypeMask,
+                             options.responsiveness,
+                             options.dwellTime,
+                             info.latitude,
+                             info.longitude,
+                             info.radius,
+                             false};
+    mGeofences[hwId] = object;
+    mGeofenceIds[key] = hwId;
+    dump();
+}
+
+void
+GeofenceAdapter::removeGeofenceItem(uint32_t hwId)
+{
+    GeofenceKey key;
+    LocationError err = getGeofenceKeyFromHwId(hwId, key);
+    if (LOCATION_ERROR_SUCCESS != err) {
+        LOC_LOGE("%s]: can not find the key for hwId %u", __func__, hwId);
+    } else {
+        auto it1 = mGeofenceIds.find(key);
+        if (it1 != mGeofenceIds.end()) {
+            mGeofenceIds.erase(it1);
+
+            auto it2 = mGeofences.find(hwId);
+            if (it2 != mGeofences.end()) {
+                mGeofences.erase(it2);
+                dump();
+            } else {
+                LOC_LOGE("%s]:geofence item to erase not found. hwId %u", __func__, hwId);
+            }
+        } else {
+            LOC_LOGE("%s]: geofence item to erase not found. hwId %u", __func__, hwId);
+        }
+    }
+}
+
+void
+GeofenceAdapter::pauseGeofenceItem(uint32_t hwId)
+{
+    auto it = mGeofences.find(hwId);
+    if (it != mGeofences.end()) {
+        it->second.paused = true;
+        dump();
+    } else {
+        LOC_LOGE("%s]: geofence item to pause not found. hwId %u", __func__, hwId);
+    }
+}
+
+void
+GeofenceAdapter::resumeGeofenceItem(uint32_t hwId)
+{
+    auto it = mGeofences.find(hwId);
+    if (it != mGeofences.end()) {
+        it->second.paused = false;
+        dump();
+    } else {
+        LOC_LOGE("%s]: geofence item to resume not found. hwId %u", __func__, hwId);
+    }
+}
+
+void
+GeofenceAdapter::modifyGeofenceItem(uint32_t hwId, const GeofenceOption& options)
+{
+    auto it = mGeofences.find(hwId);
+    if (it != mGeofences.end()) {
+        it->second.breachMask = options.breachTypeMask;
+        it->second.responsiveness = options.responsiveness;
+        it->second.dwellTime = options.dwellTime;
+        dump();
+    } else {
+        LOC_LOGE("%s]: geofence item to modify not found. hwId %u", __func__, hwId);
+    }
+}
+
+
+void
+GeofenceAdapter::geofenceBreachEvent(size_t count, uint32_t* hwIds, Location& location,
+        GeofenceBreachType breachType, uint64_t timestamp)
+{
+
+    IF_LOC_LOGD {
+        std::string idsString = "[";
+        if (NULL != hwIds) {
+            for (size_t i=0; i < count; ++i) {
+                idsString += std::to_string(hwIds[i]) + " ";
+            }
+        }
+        idsString += "]";
+        LOC_LOGD("%s]: breachType %u count %zu ids %s",
+                 __func__, breachType, count, idsString.c_str());
+    }
+
+    if (0 == count || NULL == hwIds)
+        return;
+
+    struct MsgGeofenceBreach : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        size_t mCount;
+        uint32_t* mHwIds;
+        Location mLocation;
+        GeofenceBreachType mBreachType;
+        uint64_t mTimestamp;
+        inline MsgGeofenceBreach(GeofenceAdapter& adapter,
+                                 size_t count,
+                                 uint32_t* hwIds,
+                                 Location& location,
+                                 GeofenceBreachType breachType,
+                                 uint64_t timestamp) :
+            LocMsg(),
+            mAdapter(adapter),
+            mCount(count),
+            mHwIds(new uint32_t[count]),
+            mLocation(location),
+            mBreachType(breachType),
+            mTimestamp(timestamp)
+        {
+            if (nullptr == mHwIds) {
+                LOC_LOGE("%s]: new failed to allocate mHwIds", __func__);
+                return;
+            }
+            COPY_IF_NOT_NULL(mHwIds, hwIds, mCount);
+        }
+        inline virtual ~MsgGeofenceBreach() {
+            delete[] mHwIds;
+        }
+        inline virtual void proc() const {
+            mAdapter.geofenceBreach(mCount, mHwIds, mLocation, mBreachType, mTimestamp);
+        }
+    };
+
+    sendMsg(new MsgGeofenceBreach(*this, count, hwIds, location, breachType, timestamp));
+
+}
+
+void
+GeofenceAdapter::geofenceBreach(size_t count, uint32_t* hwIds, const Location& location,
+        GeofenceBreachType breachType, uint64_t timestamp)
+{
+
+    for (auto it = mClientData.begin(); it != mClientData.end(); ++it) {
+        uint32_t* clientIds = new uint32_t[count];
+        if (nullptr == clientIds) {
+            return;
+        }
+        uint32_t index = 0;
+        for (size_t i=0; i < count; ++i) {
+            GeofenceKey key;
+            LocationError err = getGeofenceKeyFromHwId(hwIds[i], key);
+            if (LOCATION_ERROR_SUCCESS == err) {
+                if (key.client == it->first) {
+                    clientIds[index++] = key.id;
+                }
+            }
+        }
+        if (index > 0 && it->second.geofenceBreachCb != nullptr) {
+            GeofenceBreachNotification notify = {sizeof(GeofenceBreachNotification),
+                                                 index,
+                                                 clientIds,
+                                                 location,
+                                                 breachType,
+                                                 timestamp};
+
+            it->second.geofenceBreachCb(notify);
+        }
+        delete[] clientIds;
+    }
+}
+
+void
+GeofenceAdapter::geofenceStatusEvent(GeofenceStatusAvailable available)
+{
+    LOC_LOGD("%s]: available %u ", __func__, available);
+
+    struct MsgGeofenceStatus : public LocMsg {
+        GeofenceAdapter& mAdapter;
+        GeofenceStatusAvailable mAvailable;
+        inline MsgGeofenceStatus(GeofenceAdapter& adapter,
+                                 GeofenceStatusAvailable available) :
+            LocMsg(),
+            mAdapter(adapter),
+            mAvailable(available) {}
+        inline virtual void proc() const {
+            mAdapter.geofenceStatus(mAvailable);
+        }
+    };
+
+    sendMsg(new MsgGeofenceStatus(*this, available));
+}
+
+void
+GeofenceAdapter::geofenceStatus(GeofenceStatusAvailable available)
+{
+    for (auto it = mClientData.begin(); it != mClientData.end(); ++it) {
+        if (it->second.geofenceStatusCb != nullptr) {
+            GeofenceStatusNotification notify = {sizeof(GeofenceStatusNotification),
+                                                 available,
+                                                 LOCATION_TECHNOLOGY_TYPE_GNSS};
+            it->second.geofenceStatusCb(notify);
+        }
+    }
+}
+
+void
+GeofenceAdapter::dump()
+{
+    IF_LOC_LOGV {
+        LOC_LOGV(
+            "HAL | hwId  | mask | respon | latitude | longitude | radius | paused |  Id  | client");
+        for (auto it = mGeofences.begin(); it != mGeofences.end(); ++it) {
+            uint32_t hwId = it->first;
+            GeofenceObject object = it->second;
+            LOC_LOGV("    | %5u | %4u | %6u | %8.2f | %9.2f | %6.2f | %6u | %04x | %p ",
+                    hwId, object.breachMask, object.responsiveness,
+                    object.latitude, object.longitude, object.radius,
+                    object.paused, object.key.id, object.key.client);
+        }
+    }
+}
+
diff --git a/geofence/GeofenceAdapter.h b/geofence/GeofenceAdapter.h
new file mode 100644
index 0000000..38f4823
--- /dev/null
+++ b/geofence/GeofenceAdapter.h
@@ -0,0 +1,136 @@
+/* Copyright (c) 2013-2019, 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_ADAPTER_H
+#define GEOFENCE_ADAPTER_H
+
+#include <LocAdapterBase.h>
+#include <LocContext.h>
+#include <LocationAPI.h>
+#include <map>
+
+using namespace loc_core;
+
+#define COPY_IF_NOT_NULL(dest, src, len) do { \
+    if (NULL!=dest && NULL!=src) { \
+        for (size_t i=0; i<len; ++i) { \
+            dest[i] = src[i]; \
+        } \
+    } \
+} while (0)
+
+typedef struct GeofenceKey {
+    LocationAPI* client;
+    uint32_t id;
+    inline GeofenceKey() :
+        client(NULL), id(0) {}
+    inline GeofenceKey(LocationAPI* _client, uint32_t _id) :
+        client(_client), id(_id) {}
+} GeofenceKey;
+inline bool operator <(GeofenceKey const& left, GeofenceKey const& right) {
+    return left.id < right.id || (left.id == right.id && left.client < right.client);
+}
+inline bool operator ==(GeofenceKey const& left, GeofenceKey const& right) {
+    return left.id == right.id && left.client == right.client;
+}
+inline bool operator !=(GeofenceKey const& left, GeofenceKey const& right) {
+    return left.id != right.id || left.client != right.client;
+}
+typedef struct {
+    GeofenceKey key;
+    GeofenceBreachTypeMask breachMask;
+    uint32_t responsiveness;
+    uint32_t dwellTime;
+    double latitude;
+    double longitude;
+    double radius;
+    bool paused;
+} GeofenceObject;
+typedef std::map<uint32_t, GeofenceObject> GeofencesMap; //map of hwId to GeofenceObject
+typedef std::map<GeofenceKey, uint32_t> GeofenceIdMap; //map of GeofenceKey to hwId
+
+class GeofenceAdapter : public LocAdapterBase {
+
+    /* ==== GEOFENCES ====================================================================== */
+    GeofencesMap mGeofences; //map hwId to GeofenceObject
+    GeofenceIdMap mGeofenceIds; //map of GeofenceKey to hwId
+
+protected:
+
+    /* ==== CLIENT ========================================================================= */
+    virtual void updateClientsEventMask();
+    virtual void stopClientSessions(LocationAPI* client);
+
+public:
+
+    GeofenceAdapter();
+    virtual ~GeofenceAdapter() {}
+
+    /* ==== SSR ============================================================================ */
+    /* ======== EVENTS ====(Called from QMI Thread)========================================= */
+    virtual void handleEngineUpEvent();
+    /* ======== UTILITIES ================================================================== */
+    void restartGeofences();
+
+    /* ==== GEOFENCES ====================================================================== */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    uint32_t* addGeofencesCommand(LocationAPI* client, size_t count,
+                                  GeofenceOption* options, GeofenceInfo* info);
+    void removeGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids);
+    void pauseGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids);
+    void resumeGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids);
+    void modifyGeofencesCommand(LocationAPI* client, size_t count, uint32_t* ids,
+                                GeofenceOption* options);
+    /* ======== RESPONSES ================================================================== */
+    void reportResponse(LocationAPI* client, size_t count, LocationError* errs, uint32_t* ids);
+    /* ======== UTILITIES ================================================================== */
+    void saveGeofenceItem(LocationAPI* client,
+                          uint32_t clientId,
+                          uint32_t hwId,
+                          const GeofenceOption& options,
+                          const GeofenceInfo& info);
+    void removeGeofenceItem(uint32_t hwId);
+    void pauseGeofenceItem(uint32_t hwId);
+    void resumeGeofenceItem(uint32_t hwId);
+    void modifyGeofenceItem(uint32_t hwId, const GeofenceOption& options);
+    LocationError getHwIdFromClient(LocationAPI* client, uint32_t clientId, uint32_t& hwId);
+    LocationError getGeofenceKeyFromHwId(uint32_t hwId, GeofenceKey& key);
+    void dump();
+
+    /* ==== REPORTS ======================================================================== */
+    /* ======== EVENTS ====(Called from QMI Thread)========================================= */
+    void geofenceBreachEvent(size_t count, uint32_t* hwIds, Location& location,
+                             GeofenceBreachType breachType, uint64_t timestamp);
+    void geofenceStatusEvent(GeofenceStatusAvailable available);
+    /* ======== UTILITIES ================================================================== */
+    void geofenceBreach(size_t count, uint32_t* hwIds, const Location& location,
+                        GeofenceBreachType breachType, uint64_t timestamp);
+    void geofenceStatus(GeofenceStatusAvailable available);
+};
+
+#endif /* GEOFENCE_ADAPTER_H */
diff --git a/geofence/Makefile.am b/geofence/Makefile.am
new file mode 100644
index 0000000..61883ff
--- /dev/null
+++ b/geofence/Makefile.am
@@ -0,0 +1,50 @@
+AM_CFLAGS = -Wundef \
+        -Wno-trigraphs \
+        -g -O0 \
+        -fno-inline \
+        -fno-short-enums \
+        -fpic \
+        ${GPSUTILS_CFLAGS} \
+        ${LOCCORE_CFLAGS} \
+        $(LOCPLA_CFLAGS) \
+        -D__func__=__PRETTY_FUNCTION__ \
+        -std=c++1y
+
+AM_CPPFLAGS = $(AM_CFLAGS)
+
+ACLOCAL_AMFLAGS = -I m4
+
+requiredlibs = \
+        ${LOCCORE_LIBS} \
+        $(GPSUTILS_LIBS) \
+        -llog
+
+h_sources = \
+        GeofenceAdapter.h
+
+c_sources = \
+    GeofenceAdapter.cpp \
+    location_geofence.cpp
+
+libgeofencing_la_SOURCES = $(c_sources)
+if USE_GLIB
+libgeofencing_la_CFLAGS  = -DUSE_GLIB @GLIB_CFLAGS@ $(AM_CFLAGS)
+libgeofencing_la_CPPFLAGS  = -DUSE_GLIB @GLIB_CFLAGS@ $(AM_CFLAGS) $(AM_CPPFLAGS)
+libgeofencing_la_LDFLAGS = -lstdc++ -Wl,-z,defs @GLIB_LIBS@ $(requiredlibs) -shared -version-info 1:0:0
+libgeofencing_la_LIBDADD = $(requiredlibs) -lstdc++ @GLIB_LIBS@
+else
+libgeofencing_la_CFLAGS  = $(AM_CFLAGS)
+libgeofencing_la_CPPFLAGS  = $(AM_CFLAGS) $(AM_CPPFLAGS)
+libgeofencing_la_LDFLAGS = -lstdc++ -Wl,-z,defs $(requiredlibs) -shared -version-info 1:0:0
+libgeofencing_la_LIBDADD = $(requiredlibs) -lstdc++
+endif
+
+library_include_HEADERS = $(h_sources)
+
+library_includedir = $(pkgincludedir)
+
+lib_LTLIBRARIES = libgeofencing.la
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = location-geofence.pc
+EXTRA_DIST = $(pkgconfig_DATA)
diff --git a/geofence/configure.ac b/geofence/configure.ac
new file mode 100644
index 0000000..8e3cd81
--- /dev/null
+++ b/geofence/configure.ac
@@ -0,0 +1,72 @@
+AC_PREREQ(2.61)
+AC_INIT([location-geofence], 1.0.0)
+AM_INIT_AUTOMAKE([foreign])
+AC_CONFIG_SRCDIR([Makefile.am])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Check for programs
+AC_PROG_LIBTOOL
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_AWK
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+PKG_PROG_PKG_CONFIG
+
+# Check for libraries
+PKG_CHECK_MODULES([GPSUTILS], [gps-utils])
+AC_SUBST([GPSUTILS_CFLAGS])
+AC_SUBST([GPSUTILS_LIBS])
+
+PKG_CHECK_MODULES([LOCCORE], [loc-core])
+AC_SUBST([LOCCORE_CFLAGS])
+AC_SUBST([LOCCORE_LIBS])
+
+AS_CASE([$host],
+        [arm*], [ARM=yes],
+        [ARM=no]
+)
+
+AC_ARG_WITH([locpla_includes],
+      AC_HELP_STRING([--with-locpla-includes=@<:@dir@:>@],
+         [specify the path to locpla-includes in loc-pla_git.bb]),
+      [locpla_incdir=$withval],
+      with_locpla_includes=no)
+
+if test "x$with_locpla_includes" != "xno"; then
+   AC_SUBST(LOCPLA_CFLAGS, "-I${locpla_incdir}")
+fi
+
+AC_ARG_WITH([glib],
+      AC_HELP_STRING([--with-glib],
+         [enable glib, building HLOS systems which use glib]))
+
+if (test "x${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_SUBST([CFLAGS])
+AC_SUBST([CPPFLAGS])
+AC_SUBST([LIBS])
+
+AC_CONFIG_FILES([ \
+        Makefile \
+        location-geofence.pc
+        ])
+
+AC_OUTPUT
diff --git a/geofence/location-geofence.pc.in b/geofence/location-geofence.pc.in
new file mode 100644
index 0000000..6a0781f
--- /dev/null
+++ b/geofence/location-geofence.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: location-geofence
+Description: QTI GPS Geofence
+Version: @VERSION
+Libs: -L${libdir} -lgeofencing
+Cflags: -I${includedir}/location-geofence
diff --git a/geofence/location_geofence.cpp b/geofence/location_geofence.cpp
new file mode 100644
index 0000000..66729f4
--- /dev/null
+++ b/geofence/location_geofence.cpp
@@ -0,0 +1,145 @@
+/* Copyright (c) 2017-2019, 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 "GeofenceAdapter.h"
+#include "location_interface.h"
+
+static GeofenceAdapter* gGeofenceAdapter = NULL;
+
+static void initialize();
+static void deinitialize();
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks);
+static void removeClient(LocationAPI* client, removeClientCompleteCallback rmClientCb);
+static void requestCapabilities(LocationAPI* client);
+
+static uint32_t* addGeofences(LocationAPI* client, size_t count, GeofenceOption*, GeofenceInfo*);
+static void removeGeofences(LocationAPI* client, size_t count, uint32_t* ids);
+static void modifyGeofences(LocationAPI* client, size_t count, uint32_t* ids,
+                               GeofenceOption* options);
+static void pauseGeofences(LocationAPI* client, size_t count, uint32_t* ids);
+static void resumeGeofences(LocationAPI* client, size_t count, uint32_t* ids);
+
+static const GeofenceInterface gGeofenceInterface = {
+    sizeof(GeofenceInterface),
+    initialize,
+    deinitialize,
+    addClient,
+    removeClient,
+    requestCapabilities,
+    addGeofences,
+    removeGeofences,
+    modifyGeofences,
+    pauseGeofences,
+    resumeGeofences
+};
+
+#ifndef DEBUG_X86
+extern "C" const GeofenceInterface* getGeofenceInterface()
+#else
+const GeofenceInterface* getGeofenceInterface()
+#endif // DEBUG_X86
+{
+   return &gGeofenceInterface;
+}
+
+static void initialize()
+{
+    if (NULL == gGeofenceAdapter) {
+        gGeofenceAdapter = new GeofenceAdapter();
+    }
+}
+
+static void deinitialize()
+{
+    if (NULL != gGeofenceAdapter) {
+        delete gGeofenceAdapter;
+        gGeofenceAdapter = NULL;
+    }
+}
+
+static void addClient(LocationAPI* client, const LocationCallbacks& callbacks)
+{
+    if (NULL != gGeofenceAdapter) {
+        gGeofenceAdapter->addClientCommand(client, callbacks);
+    }
+}
+
+static void removeClient(LocationAPI* client, removeClientCompleteCallback rmClientCb)
+{
+    if (NULL != gGeofenceAdapter) {
+        gGeofenceAdapter->removeClientCommand(client, rmClientCb);
+    }
+}
+
+static void requestCapabilities(LocationAPI* client)
+{
+    if (NULL != gGeofenceAdapter) {
+        gGeofenceAdapter->requestCapabilitiesCommand(client);
+    }
+}
+
+static uint32_t* addGeofences(LocationAPI* client, size_t count,
+                              GeofenceOption* options, GeofenceInfo* info)
+{
+    if (NULL != gGeofenceAdapter) {
+        return gGeofenceAdapter->addGeofencesCommand(client, count, options, info);
+    } else {
+        return NULL;
+    }
+}
+
+static void removeGeofences(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    if (NULL != gGeofenceAdapter) {
+        return gGeofenceAdapter->removeGeofencesCommand(client, count, ids);
+    }
+}
+
+static void modifyGeofences(LocationAPI* client, size_t count, uint32_t* ids,
+                            GeofenceOption* options)
+{
+    if (NULL != gGeofenceAdapter) {
+        return gGeofenceAdapter->modifyGeofencesCommand(client, count, ids, options);
+    }
+}
+
+static void pauseGeofences(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    if (NULL != gGeofenceAdapter) {
+        return gGeofenceAdapter->pauseGeofencesCommand(client, count, ids);
+    }
+}
+
+static void resumeGeofences(LocationAPI* client, size_t count, uint32_t* ids)
+{
+    if (NULL != gGeofenceAdapter) {
+        return gGeofenceAdapter->resumeGeofencesCommand(client, count, ids);
+    }
+}
+
diff --git a/gnss/Agps.cpp b/gnss/Agps.cpp
index a4f6a30..9de1329 100644
--- a/gnss/Agps.cpp
+++ b/gnss/Agps.cpp
@@ -445,15 +445,14 @@ void AgpsStateMachine::setAPN(char* apn, unsigned int len){
 
     if (NULL != mAPN) {
         delete mAPN;
+        mAPN  = NULL;
     }
 
-    if (apn == NULL || len <= 0) {
+    if (NULL == apn || len <= 0 || len > MAX_APN_LEN || strlen(apn) != len) {
         LOC_LOGD("Invalid apn len (%d) or null apn", len);
         mAPN = NULL;
         mAPNLen = 0;
-    }
-
-    if (NULL != apn) {
+    } else {
         mAPN = new char[len+1];
         if (NULL != mAPN) {
             memcpy(mAPN, apn, len);
diff --git a/gnss/GnssAdapter.cpp b/gnss/GnssAdapter.cpp
index 016356b..3563ed0 100644
--- a/gnss/GnssAdapter.cpp
+++ b/gnss/GnssAdapter.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -50,6 +50,7 @@
 
 #define RAD2DEG    (180.0 / M_PI)
 #define PROCESS_NAME_ENGINE_SERVICE "engine-service"
+#define MIN_TRACKING_INTERVAL (100) // 100 msec
 
 using namespace loc_core;
 
@@ -63,9 +64,9 @@ static void agpsCloseResultCb (bool isSuccess, AGpsExtType agpsType, void* userD
 
 GnssAdapter::GnssAdapter() :
     LocAdapterBase(0,
-                   LocDualContext::getLocFgContext(NULL,
+                   LocContext::getLocContext(NULL,
                                                    NULL,
-                                                   LocDualContext::mLocationHalName,
+                                                   LocContext::mLocationHalName,
                                                    false), true, nullptr),
     mEngHubProxy(new EngineHubProxyBase()),
     mLocPositionMode(),
@@ -87,8 +88,13 @@ GnssAdapter::GnssAdapter() :
     mSystemStatus(SystemStatus::getInstance(mMsgTask)),
     mServerUrl(":"),
     mXtraObserver(mSystemStatus->getOsObserver(), mMsgTask),
+    mLocSystemInfo{},
     mBlockCPIInfo{},
-    mLocSystemInfo{}
+    mNfwCb(NULL),
+    mPowerOn(false),
+    mAllowFlpNetworkFixes(0),
+    mGnssEnergyConsumedCb(nullptr),
+    mPowerStateCb(nullptr)
 {
     LOC_LOGD("%s]: Constructor %p", __func__, this);
     mLocPositionMode.mode = LOC_POSITION_MODE_INVALID;
@@ -428,37 +434,7 @@ GnssAdapter::convertLocationInfo(GnssLocationInfoNotification& out,
     }
 }
 
-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)
@@ -598,8 +574,21 @@ GnssAdapter::readConfigCommand()
             mAdapter(adapter),
             mContext(context) {}
         inline virtual void proc() const {
-            // reads config into mContext->mGps_conf
-            mContext.readConfig();
+            static bool confReadDone = false;
+            if (!confReadDone) {
+                confReadDone = true;
+                // reads config into mContext->mGps_conf
+                mContext.readConfig();
+
+                uint32_t allowFlpNetworkFixes = 0;
+                static const loc_param_s_type flp_conf_param_table[] =
+                {
+                    {"ALLOW_NETWORK_FIXES", &allowFlpNetworkFixes, NULL, 'n'},
+                };
+                UTIL_READ_CONF(LOC_PATH_FLP_CONF, flp_conf_param_table);
+                LOC_LOGd("allowFlpNetworkFixes %u", allowFlpNetworkFixes);
+                mAdapter->setAllowFlpNetworkFixes(allowFlpNetworkFixes);
+            }
         }
     };
 
@@ -654,7 +643,10 @@ GnssAdapter::setConfigCommand()
             mAdapter(adapter),
             mApi(api) {}
         inline virtual void proc() const {
-
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgSetConfig(*this));
+                return;
+            }
             // set nmea mask type
             uint32_t mask = 0;
             if (NMEA_PROVIDER_MP == ContextBase::mGps_conf.NMEA_PROVIDER) {
@@ -681,45 +673,36 @@ GnssAdapter::setConfigCommand()
 
             mApi.sendMsg(new LocApiMsg(
                     [&adapter, gpsConf, sapConf, oldServerUrl, oldMoServerUrl] () {
-
-                std::string serverUrl = adapter.getServerUrl();
-                std::string moServerUrl = adapter.getMoServerUrl();
-                int serverUrlLen = serverUrl.length();
-                int moServerUrlLen = moServerUrl.length();
-
-                if (gpsConf.AGPS_CONFIG_INJECT) {
-                    adapter.mLocApi->setSUPLVersionSync(
-                            adapter.mLocApi->convertSuplVersion(gpsConf.SUPL_VER));
-                    adapter.mLocApi->setLPPConfigSync(
-                            adapter.mLocApi->convertLppProfile(gpsConf.LPP_PROFILE));
-                    adapter.mLocApi->setAGLONASSProtocolSync(
-                            gpsConf.A_GLONASS_POS_PROTOCOL_SELECT);
+                //cache the injected configuration with GnssConfigRequested struct
+                GnssConfig gnssConfigRequested = {};
+                gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT |
+                        GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT |
+                        GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT |
+                        GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT;
+                gnssConfigRequested.gpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
+                if (0 == adapter.getAfwControlId() || NULL != adapter.mNfwCb) {
+                    gnssConfigRequested.gpsLock = gpsConf.GPS_LOCK;
                 }
 
-                if ((serverUrlLen !=0) && (oldServerUrl.compare(serverUrl) != 0)) {
-                    LocationError locErr =
-                            adapter.mLocApi->setServerSync(serverUrl.c_str(), serverUrlLen,
-                                                           LOC_AGPS_SUPL_SERVER);
-                    if (locErr != LOCATION_ERROR_SUCCESS) {
-                        LOC_LOGe("Error while setting SUPL_HOST server:%s",
-                                 serverUrl.c_str());
-                    }
-                }
-                if ((moServerUrlLen != 0) && (oldMoServerUrl.compare(moServerUrl) != 0)) {
-                    LocationError locErr =
-                            adapter.mLocApi->setServerSync(moServerUrl.c_str(),
-                                                           moServerUrlLen,
-                                                           LOC_AGPS_MO_SUPL_SERVER);
-                    if (locErr != LOCATION_ERROR_SUCCESS) {
-                        LOC_LOGe("Error while setting MO SUPL_HOST server:%s",
-                                 moServerUrl.c_str());
-                    }
+                if (gpsConf.AGPS_CONFIG_INJECT) {
+                    gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT |
+                            GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT |
+                            GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT;
+                    gnssConfigRequested.suplVersion =
+                            adapter.mLocApi->convertSuplVersion(gpsConf.SUPL_VER);
+                    gnssConfigRequested.lppProfile =
+                            adapter.mLocApi->convertLppProfile(gpsConf.LPP_PROFILE);
+                    gnssConfigRequested.aGlonassPositionProtocolMask =
+                            gpsConf.A_GLONASS_POS_PROTOCOL_SELECT;
                 }
-
-                adapter.mLocApi->setLPPeProtocolCpSync(
-                    adapter.mLocApi->convertLppeCp(gpsConf.LPPE_CP_TECHNOLOGY));
-                adapter.mLocApi->setLPPeProtocolUpSync(
-                    adapter.mLocApi->convertLppeUp(gpsConf.LPPE_UP_TECHNOLOGY));
+                gnssConfigRequested.lppeControlPlaneMask =
+                        adapter.mLocApi->convertLppeCp(gpsConf.LPPE_CP_TECHNOLOGY);
+                gnssConfigRequested.lppeUserPlaneMask =
+                        adapter.mLocApi->convertLppeUp(gpsConf.LPPE_UP_TECHNOLOGY);
+                gnssConfigRequested.blacklistedSvIds.assign(adapter.mBlacklistedSvIds.begin(),
+                        adapter.mBlacklistedSvIds.end());
+                adapter.gnssUpdateConfig(oldServerUrl, oldMoServerUrl, gnssConfigRequested,
+                        gnssConfigRequested);
 
                 // set nmea mask type
                 uint32_t mask = 0;
@@ -778,6 +761,192 @@ GnssAdapter::setConfigCommand()
     sendMsg(new MsgSetConfig(*this, *mLocApi));
 }
 
+std::vector<LocationError> GnssAdapter::gnssUpdateConfig(const std::string& oldServerUrl,
+        const std::string& oldMoServerUrl, const GnssConfig& gnssConfigRequested,
+        const GnssConfig& gnssConfigNeedEngineUpdate, size_t count) {
+    loc_gps_cfg_s gpsConf = ContextBase::mGps_conf;
+    size_t index = 0;
+    LocationError err = LOCATION_ERROR_SUCCESS;
+    std::vector<LocationError> errsList = {err};
+    if (count > 0) {
+        errsList.insert(errsList.begin(), count, LOCATION_ERROR_SUCCESS);
+    }
+
+
+    std::string serverUrl = getServerUrl();
+    std::string moServerUrl = getMoServerUrl();
+
+    int serverUrlLen = serverUrl.length();
+    int moServerUrlLen = moServerUrl.length();
+
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
+            err = mLocApi->setGpsLockSync(gnssConfigRequested.gpsLock);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags &
+            GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
+            if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
+                    GNSS_ASSISTANCE_TYPE_SUPL) {
+                if ((serverUrlLen != 0) && (oldServerUrl.compare(serverUrl) !=0)) {
+
+                    err = mLocApi->setServerSync(
+                            serverUrl.c_str(), serverUrlLen, LOC_AGPS_SUPL_SERVER);
+                    if (index < count) {
+                        errsList[index] = err;
+                    }
+                }
+                if ((moServerUrlLen != 0) && (oldMoServerUrl.compare(moServerUrl) != 0)) {
+                    LocationError locErr =
+                        mLocApi->setServerSync(moServerUrl.c_str(),
+                                moServerUrlLen,
+                                LOC_AGPS_MO_SUPL_SERVER);
+                    if (locErr != LOCATION_ERROR_SUCCESS) {
+                        LOC_LOGe("Error while setting MO SUPL_HOST server:%s",
+                                moServerUrl.c_str());
+                    }
+                }
+            } else if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
+                    GNSS_ASSISTANCE_TYPE_C2K) {
+                struct in_addr addr;
+                struct hostent* hp;
+                bool resolveAddrSuccess = true;
+
+                hp = gethostbyname(
+                        gnssConfigNeedEngineUpdate.assistanceServer.hostName);
+                if (hp != NULL) { /* DNS OK */
+                    memcpy(&addr, hp->h_addr_list[0], hp->h_length);
+                } else {
+                    /* Try IP representation */
+                    if (inet_aton(
+                                gnssConfigNeedEngineUpdate.assistanceServer.hostName,
+                                &addr) == 0) {
+                        /* IP not valid */
+                        LOC_LOGE("%s]: hostname '%s' cannot be resolved ",
+                                __func__,
+                                gnssConfigNeedEngineUpdate.assistanceServer.hostName);
+                        if (index < count) {
+                            errsList[index] = LOCATION_ERROR_INVALID_PARAMETER;
+                        }
+                    } else {
+                        resolveAddrSuccess = false;
+                    }
+                }
+
+                if (resolveAddrSuccess) {
+                    unsigned int ip = htonl(addr.s_addr);
+                    err = mLocApi->setServerSync(ip,
+                            gnssConfigNeedEngineUpdate.assistanceServer.port,
+                            LOC_AGPS_CDMA_PDE_SERVER);
+                    if (index < count) {
+                        errsList[index] = err;
+                    }
+                }
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
+            err = mLocApi->setSUPLVersionSync(gnssConfigRequested.suplVersion);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
+            err = mLocApi->setLPPConfigSync(gnssConfigRequested.lppProfile);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
+            err = mLocApi->setLPPeProtocolCpSync(
+                    gnssConfigRequested.lppeControlPlaneMask);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
+            err = mLocApi->setLPPeProtocolUpSync(
+                    gnssConfigRequested.lppeUserPlaneMask);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+
+    if (gnssConfigRequested.flags &
+            GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
+            err = mLocApi->setAGLONASSProtocolSync(
+                    gnssConfigRequested.aGlonassPositionProtocolMask);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT) {
+        // Check if feature is supported
+        if (!ContextBase::isFeatureSupported(
+                    LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
+            LOC_LOGe("Feature constellation enablement not supported.");
+            err = LOCATION_ERROR_NOT_SUPPORTED;
+        } else {
+            // Send the SV ID Config to Modem
+            mBlacklistedSvIds.assign(gnssConfigRequested.blacklistedSvIds.begin(),
+                    gnssConfigRequested.blacklistedSvIds.end());
+            err = gnssSvIdConfigUpdateSync(gnssConfigRequested.blacklistedSvIds);
+            if (LOCATION_ERROR_SUCCESS != err) {
+                LOC_LOGe("Failed to send config to modem, err %d", err);
+            }
+        }
+        if (index < count) {
+            errsList[index] = err;
+        }
+        index++;
+    }
+    if (gnssConfigRequested.flags &
+            GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
+        if (gnssConfigNeedEngineUpdate.flags &
+                GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
+            err = mLocApi->setEmergencyExtensionWindowSync(
+                    gnssConfigRequested.emergencyExtensionSeconds);
+            if (index < count) {
+                errsList[index] = err;
+            }
+        }
+        index++;
+    }
+    return errsList;
+}
+
 uint32_t*
 GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
 {
@@ -832,7 +1001,10 @@ GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
         }
 
         inline virtual void proc() const {
-
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgGnssUpdateConfig(*this));
+                return;
+            }
             GnssAdapter& adapter = mAdapter;
             size_t countOfConfigs = mCount;
             GnssConfig gnssConfigRequested = mConfig;
@@ -845,14 +1017,15 @@ GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
             int index = 0;
 
             if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
-                uint32_t newGpsLock = mAdapter.convertGpsLock(gnssConfigRequested.gpsLock);
-                ContextBase::mGps_conf.GPS_LOCK = newGpsLock;
-                if (0 == ContextBase::mGps_conf.GPS_LOCK) {
-                    ContextBase::mGps_conf.GPS_LOCK = 3;
+                GnssConfigGpsLock newGpsLock = gnssConfigRequested.gpsLock;
+                if (GNSS_CONFIG_GPS_LOCK_NONE == newGpsLock) {
+                    newGpsLock = GNSS_CONFIG_GPS_LOCK_MO;
                 }
-                if (0 != mAdapter.getPowerVoteId()) {
+                if (newGpsLock == ContextBase::mGps_conf.GPS_LOCK ||
+                    0 != mAdapter.getAfwControlId()) {
                     gnssConfigNeedEngineUpdate.flags &= ~(GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT);
                 }
+                ContextBase::mGps_conf.GPS_LOCK = newGpsLock;
                 index++;
             }
             if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
@@ -924,24 +1097,24 @@ GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
                             ~(GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT);
                 }
                 index++;
-             }
-             if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
+            }
+            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
                 uint32_t newEP4ES = mAdapter.convertEP4ES(
                         gnssConfigRequested.emergencyPdnForEmergencySupl);
                 if (newEP4ES != ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL) {
                     ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL = newEP4ES;
                 }
                 index++;
-             }
-             if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
+            }
+            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
                 uint32_t newSuplEs = mAdapter.convertSuplEs(
                         gnssConfigRequested.suplEmergencyServices);
                 if (newSuplEs != ContextBase::mGps_conf.SUPL_ES) {
                     ContextBase::mGps_conf.SUPL_ES = newSuplEs;
                 }
                 index++;
-             }
-             if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
+            }
+            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
                 uint32_t newSuplMode = mAdapter.convertSuplMode(gnssConfigRequested.suplModeMask);
                 if (newSuplMode != ContextBase::mGps_conf.SUPL_MODE) {
                     ContextBase::mGps_conf.SUPL_MODE = newSuplMode;
@@ -961,148 +1134,11 @@ GnssAdapter::gnssUpdateConfigCommand(GnssConfig config)
             mApi.sendMsg(new LocApiMsg(
                     [&adapter, gnssConfigRequested, gnssConfigNeedEngineUpdate,
                     countOfConfigs, configCollectiveResponse, errs, oldServerUrl] () {
-
-                size_t index = 0;
-                LocationError err = LOCATION_ERROR_SUCCESS;
-                std::vector<LocationError> errsList(errs);
-
                 std::string serverUrl = adapter.getServerUrl();
                 int serverUrlLen = serverUrl.length();
+                std::vector<LocationError> errsList = adapter.gnssUpdateConfig(oldServerUrl,
+                        "", gnssConfigRequested, gnssConfigNeedEngineUpdate, countOfConfigs);
 
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
-                        err = adapter.mLocApi->setGpsLockSync(gnssConfigRequested.gpsLock);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags &
-                        GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
-                        if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
-                                GNSS_ASSISTANCE_TYPE_SUPL) {
-                            if ((serverUrlLen != 0) && (oldServerUrl.compare(serverUrl) !=0)) {
-                                err = adapter.mLocApi->setServerSync(
-                                        serverUrl.c_str(), serverUrlLen, LOC_AGPS_SUPL_SERVER);
-                                if (index < countOfConfigs) {
-                                    errsList[index] = err;
-                                }
-                            }
-                        } else if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
-                                GNSS_ASSISTANCE_TYPE_C2K) {
-                                struct in_addr addr;
-                                struct hostent* hp;
-                                bool resolveAddrSuccess = true;
-
-                                hp = gethostbyname(
-                                        gnssConfigNeedEngineUpdate.assistanceServer.hostName);
-                                if (hp != NULL) { /* DNS OK */
-                                    memcpy(&addr, hp->h_addr_list[0], hp->h_length);
-                                } else {
-                                    /* Try IP representation */
-                                    if (inet_aton(
-                                            gnssConfigNeedEngineUpdate.assistanceServer.hostName,
-                                            &addr) == 0) {
-                                        /* IP not valid */
-                                        LOC_LOGE("%s]: hostname '%s' cannot be resolved ",
-                                                __func__,
-                                                gnssConfigNeedEngineUpdate.assistanceServer.hostName);
-                                        if (index < countOfConfigs) {
-                                            errsList[index] = LOCATION_ERROR_INVALID_PARAMETER;
-                                        }
-                                    } else {
-                                        resolveAddrSuccess = false;
-                                    }
-                                }
-
-                                if (resolveAddrSuccess) {
-                                    unsigned int ip = htonl(addr.s_addr);
-                                    err = adapter.mLocApi->setServerSync(ip,
-                                            gnssConfigNeedEngineUpdate.assistanceServer.port,
-                                            LOC_AGPS_CDMA_PDE_SERVER);
-                                    if (index < countOfConfigs) {
-                                        errsList[index] = err;
-                                    }
-                                }
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
-                        err = adapter.mLocApi->setSUPLVersionSync(gnssConfigRequested.suplVersion);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
-                        err = adapter.mLocApi->setLPPConfigSync(gnssConfigRequested.lppProfile);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
-                        err = adapter.mLocApi->setLPPeProtocolCpSync(
-                                gnssConfigRequested.lppeControlPlaneMask);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
-                        err = adapter.mLocApi->setLPPeProtocolUpSync(
-                                gnssConfigRequested.lppeUserPlaneMask);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags &
-                        GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
-                    if (gnssConfigNeedEngineUpdate.flags &
-                            GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
-                        err = adapter.mLocApi->setAGLONASSProtocolSync(
-                                gnssConfigRequested.aGlonassPositionProtocolMask);
-                        if (index < countOfConfigs) {
-                            errsList[index] = err;
-                        }
-                    }
-                    index++;
-                }
-                if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT) {
-                    // Check if feature is supported
-                    if (!ContextBase::isFeatureSupported(
-                            LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
-                        LOC_LOGe("Feature constellation enablement not supported.");
-                        err = LOCATION_ERROR_NOT_SUPPORTED;
-                    } else {
-                        // Send the SV ID Config to Modem
-                        err = adapter.gnssSvIdConfigUpdateSync(gnssConfigRequested.blacklistedSvIds);
-                        if (LOCATION_ERROR_SUCCESS != err) {
-                            LOC_LOGe("Failed to send config to modem, err %d", err);
-                        }
-                    }
-                    if (index < countOfConfigs) {
-                        errsList[index] = err;
-                    }
-                    index++;
-                }
                 configCollectiveResponse->returnToSender(errsList);
             }));
         }
@@ -1224,7 +1260,10 @@ GnssAdapter::gnssGetConfigCommand(GnssConfigFlagsMask configMask) {
             delete[] mIds;
         }
         inline virtual void proc() const {
-
+            if (!mAdapter.isEngineCapabilitiesKnown()) {
+                mAdapter.mPendingMsgs.push_back(new MsgGnssGetConfig(*this));
+                return;
+            }
             LocationError* errs = new LocationError[mCount];
             LocationError err = LOCATION_ERROR_SUCCESS;
             uint32_t index = 0;
@@ -1300,6 +1339,12 @@ GnssAdapter::gnssGetConfigCommand(GnssConfigFlagsMask configMask) {
                     errs[index++] = err;
                 }
             }
+            if (mConfigMask & GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
+                err = LOCATION_ERROR_NOT_SUPPORTED;
+                if (index < mCount) {
+                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
+                }
+            }
 
             mAdapter.reportResponse(index, errs, mIds);
             delete[] errs;
@@ -1493,7 +1538,10 @@ GnssAdapter::gnssUpdateSvTypeConfigCommand(GnssSvTypeConfig config)
             mApi(api),
             mConfig(config) {}
         inline virtual void proc() const {
-
+            if (!mAdapter->isEngineCapabilitiesKnown()) {
+                mAdapter->mPendingMsgs.push_back(new MsgGnssUpdateSvTypeConfig(*this));
+                return;
+            }
             // Check if feature is supported
             if (!ContextBase::isFeatureSupported(
                     LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
@@ -1583,7 +1631,10 @@ GnssAdapter::gnssGetSvTypeConfigCommand(GnssSvTypeConfigCallback callback)
             mApi(api),
             mCallback(callback) {}
         inline virtual void proc() const {
-
+            if (!mAdapter->isEngineCapabilitiesKnown()) {
+                mAdapter->mPendingMsgs.push_back(new MsgGnssGetSvTypeConfig(*this));
+                return;
+            }
             if (!ContextBase::isFeatureSupported(
                     LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                 LOC_LOGe("Feature not supported.");
@@ -1612,7 +1663,10 @@ GnssAdapter::gnssResetSvTypeConfigCommand()
             mAdapter(adapter),
             mApi(api) {}
         inline virtual void proc() const {
-
+            if (!mAdapter->isEngineCapabilitiesKnown()) {
+                mAdapter->mPendingMsgs.push_back(new MsgGnssResetSvTypeConfig(*this));
+                return;
+            }
             if (!ContextBase::isFeatureSupported(
                     LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                 LOC_LOGe("Feature not supported.");
@@ -1859,43 +1913,32 @@ GnssAdapter::addClientCommand(LocationAPI* client, const LocationCallbacks& call
 }
 
 void
-GnssAdapter::removeClientCommand(LocationAPI* client,
-                                 removeClientCompleteCallback rmClientCb)
+GnssAdapter::stopClientSessions(LocationAPI* client)
 {
     LOC_LOGD("%s]: client %p", __func__, client);
 
-    struct MsgRemoveClient : public LocMsg {
-        GnssAdapter& mAdapter;
-        LocationAPI* mClient;
-        removeClientCompleteCallback mRmClientCb;
-        inline MsgRemoveClient(GnssAdapter& adapter,
-                               LocationAPI* client,
-                               removeClientCompleteCallback rmCb) :
-            LocMsg(),
-            mAdapter(adapter),
-            mClient(client),
-            mRmClientCb(rmCb){}
-        inline virtual void proc() const {
-            mAdapter.stopClientSessions(mClient);
-            mAdapter.eraseClient(mClient);
-            if (nullptr != mRmClientCb) {
-                mRmClientCb(mClient);
-            }
+    /* Time-based Tracking */
+    std::vector<LocationSessionKey> vTimeBasedTrackingClient;
+    for (auto it : mTimeBasedTrackingSessions) {
+        if (client == it.first.client) {
+            vTimeBasedTrackingClient.emplace_back(it.first.client, it.first.id);
         }
-    };
-
-    sendMsg(new MsgRemoveClient(*this, client, rmClientCb));
-}
+    }
+    for (auto key : vTimeBasedTrackingClient) {
+        stopTimeBasedTrackingMultiplex(key.client, key.id);
+    }
 
-void
-GnssAdapter::stopClientSessions(LocationAPI* client)
-{
-    LOC_LOGD("%s]: client %p", __func__, client);
-    for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end();) {
+    /* Distance-based Tracking */
+    for (auto it = mDistanceBasedTrackingSessions.begin();
+              it != mDistanceBasedTrackingSessions.end(); /* no increment here*/) {
         if (client == it->first.client) {
-            stopTrackingMultiplex(it->first.client, it->first.id);
-            it = mTrackingSessions.erase(it);
-            continue;
+            mLocApi->stopDistanceBasedTracking(it->first.id, new LocApiResponse(*getContext(),
+                          [this, client, id=it->first.id] (LocationError err) {
+                    if (LOCATION_ERROR_SUCCESS == err) {
+                        eraseTrackingSession(client, id);
+                    }
+                }
+            ));
         }
         ++it; // increment only when not erasing an iterator
     }
@@ -1938,10 +1981,12 @@ GnssAdapter::updateClientsEventMask()
     if((1 == ContextBase::mGps_conf.EXTERNAL_DR_ENABLED) ||
        (true == initEngHubProxy())) {
         mask |= LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT;
+        mask |= LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT;
         mask |= LOC_API_ADAPTER_BIT_GNSS_SV_POLYNOMIAL_REPORT;
         mask |= LOC_API_ADAPTER_BIT_PARSED_UNPROPAGATED_POSITION_REPORT;
         mask |= LOC_API_ADAPTER_BIT_GNSS_SV_EPHEMERIS_REPORT;
         mask |= LOC_API_ADAPTER_BIT_LOC_SYSTEM_INFO;
+        mask |= LOC_API_ADAPTER_BIT_EVENT_REPORT_INFO;
 
         LOC_LOGd("Auto usecase, Enable MEAS/POLY/EPHEMERIS - mask 0x%" PRIx64 "",
                 mask);
@@ -1973,11 +2018,15 @@ GnssAdapter::handleEngineUpEvent()
             LocMsg(),
             mAdapter(adapter) {}
         virtual void proc() const {
+            mAdapter.setEngineCapabilitiesKnown(true);
             mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
-            // restart sessions
             mAdapter.restartSessions();
             mAdapter.gnssSvIdConfigUpdate();
             mAdapter.gnssSvTypeConfigUpdate();
+            for (auto msg: mAdapter.mPendingMsgs) {
+                mAdapter.sendMsg(msg);
+            }
+            mAdapter.mPendingMsgs.clear();
         }
     };
 
@@ -1994,130 +2043,37 @@ GnssAdapter::restartSessions()
     // odcpi session is no longer active after restart
     mOdcpiRequestActive = false;
 
-    if (mTrackingSessions.empty()) {
-        return;
-    }
-
-    // get the LocationOptions that has the smallest interval, which should be the active one
-    TrackingOptions smallestIntervalOptions = {}; // size is zero until set for the first time
-    TrackingOptions highestPowerTrackingOptions = {};
-    for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end(); ++it) {
-        // size of zero means we havent set it yet
-        if (0 == smallestIntervalOptions.size ||
-            it->second.minInterval < smallestIntervalOptions.minInterval) {
-             smallestIntervalOptions = it->second;
-        }
-        GnssPowerMode powerMode = it->second.powerMode;
-        // Size of zero means we havent set it yet
-        if (0 == highestPowerTrackingOptions.size ||
-            (GNSS_POWER_MODE_INVALID != powerMode &&
-                    powerMode < highestPowerTrackingOptions.powerMode)) {
-             highestPowerTrackingOptions = it->second;
-        }
-    }
-
-    LocPosMode locPosMode = {};
-    highestPowerTrackingOptions.setLocationOptions(smallestIntervalOptions);
-    convertOptions(locPosMode, highestPowerTrackingOptions);
-    mLocApi->startFix(locPosMode, nullptr);
-}
-
-void
-GnssAdapter::requestCapabilitiesCommand(LocationAPI* client)
-{
-    LOC_LOGD("%s]: ", __func__);
-
-    struct MsgRequestCapabilities : public LocMsg {
-        GnssAdapter& mAdapter;
-        LocationAPI* mClient;
-        inline MsgRequestCapabilities(GnssAdapter& adapter,
-                                      LocationAPI* client) :
-            LocMsg(),
-            mAdapter(adapter),
-            mClient(client) {}
-        inline virtual void proc() const {
-            LocationCallbacks callbacks = mAdapter.getClientCallbacks(mClient);
-            if (callbacks.capabilitiesCb == nullptr) {
-                LOC_LOGE("%s]: capabilitiesCb is NULL", __func__);
-                return;
+    if (!mTimeBasedTrackingSessions.empty()) {
+        // get the LocationOptions that has the smallest interval, which should be the active one
+        TrackingOptions smallestIntervalOptions; // size is zero until set for the first time
+        TrackingOptions highestPowerTrackingOptions;
+        memset(&smallestIntervalOptions, 0, sizeof(smallestIntervalOptions));
+        memset(&highestPowerTrackingOptions, 0, sizeof(highestPowerTrackingOptions));
+        for (auto it = mTimeBasedTrackingSessions.begin(); it != mTimeBasedTrackingSessions.end(); ++it) {
+            // size of zero means we havent set it yet
+            if (0 == smallestIntervalOptions.size ||
+                it->second.minInterval < smallestIntervalOptions.minInterval) {
+                 smallestIntervalOptions = it->second;
+            }
+            GnssPowerMode powerMode = it->second.powerMode;
+            // Size of zero means we havent set it yet
+            if (0 == highestPowerTrackingOptions.size ||
+                (GNSS_POWER_MODE_INVALID != powerMode &&
+                        powerMode < highestPowerTrackingOptions.powerMode)) {
+                 highestPowerTrackingOptions = it->second;
             }
-
-                LocationCapabilitiesMask mask = mAdapter.getCapabilities();
-                callbacks.capabilitiesCb(mask);
         }
-    };
-
-    if (ContextBase::isEngineCapabilitiesKnown()) {
-        sendMsg(new MsgRequestCapabilities(*this, client));
-    }
-}
-
-LocationCapabilitiesMask
-GnssAdapter::getCapabilities()
-{
-    LocationCapabilitiesMask mask = 0;
-    uint32_t carrierCapabilities = ContextBase::getCarrierCapabilities();
-    // time based tracking always supported
-    mask |= LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT;
-    // geofence always supported
-    mask |= LOCATION_CAPABILITIES_GEOFENCE_BIT;
-    if (carrierCapabilities & LOC_GPS_CAPABILITY_MSB) {
-        mask |= LOCATION_CAPABILITIES_GNSS_MSB_BIT;
-    }
-    if (LOC_GPS_CAPABILITY_MSA & carrierCapabilities) {
-        mask |= LOCATION_CAPABILITIES_GNSS_MSA_BIT;
-    }
-    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING)) {
-        mask |= LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT |
-                LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT;
-    }
-    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
-        mask |= LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT;
-    }
-    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_OUTDOOR_TRIP_BATCHING)) {
-        mask |= LOCATION_CAPABILITIES_OUTDOOR_TRIP_BATCHING_BIT;
-    }
-    if (ContextBase::gnssConstellationConfig()) {
-        mask |= LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT;
-    }
-    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_DEBUG_NMEA_V02)) {
-        mask |= LOCATION_CAPABILITIES_DEBUG_NMEA_BIT;
-    }
-    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
-        mask |= LOCATION_CAPABILITIES_CONSTELLATION_ENABLEMENT_BIT;
-    }
-    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02)) {
-        mask |= LOCATION_CAPABILITIES_AGPM_BIT;
-    }
-    return mask;
-}
 
-void
-GnssAdapter::broadcastCapabilities(LocationCapabilitiesMask mask)
-{
-    for (auto clientData : mClientData) {
-        if (nullptr != clientData.second.capabilitiesCb) {
-            clientData.second.capabilitiesCb(mask);
-        }
+        highestPowerTrackingOptions.setLocationOptions(smallestIntervalOptions);
+        mLocApi->startTimeBasedTracking(highestPowerTrackingOptions, nullptr);
     }
-}
 
-LocationCallbacks
-GnssAdapter::getClientCallbacks(LocationAPI* client)
-{
-    LocationCallbacks callbacks = {};
-    auto it = mClientData.find(client);
-    if (it != mClientData.end()) {
-        callbacks = it->second;
+    for (auto it = mDistanceBasedTrackingSessions.begin();
+              it != mDistanceBasedTrackingSessions.end(); ++it) {
+        mLocApi->startDistanceBasedTracking(it->first.id, it->second,
+                                            new LocApiResponse(*getContext(),
+                                            [] (LocationError /*err*/) {}));
     }
-    return callbacks;
-}
-
-void
-GnssAdapter::saveClient(LocationAPI* client, const LocationCallbacks& callbacks)
-{
-    mClientData[client] = callbacks;
-    updateClientsEventMask();
 }
 
 void
@@ -2149,21 +2105,25 @@ GnssAdapter::notifyClientOfCachedLocationSystemInfo(
     }
 }
 
-void
-GnssAdapter::eraseClient(LocationAPI* client)
+bool
+GnssAdapter::hasTrackingCallback(LocationAPI* client)
 {
     auto it = mClientData.find(client);
-    if (it != mClientData.end()) {
-        mClientData.erase(it);
-    }
-    updateClientsEventMask();
+    return (it != mClientData.end() && (it->second.trackingCb || it->second.gnssLocationInfoCb));
 }
 
 bool
-GnssAdapter::hasTrackingCallback(LocationAPI* client)
+GnssAdapter::isTimeBasedTrackingSession(LocationAPI* client, uint32_t sessionId)
 {
-    auto it = mClientData.find(client);
-    return (it != mClientData.end() && (it->second.trackingCb || it->second.gnssLocationInfoCb));
+    LocationSessionKey key(client, sessionId);
+    return (mTimeBasedTrackingSessions.find(key) != mTimeBasedTrackingSessions.end());
+}
+
+bool
+GnssAdapter::isDistanceBasedTrackingSession(LocationAPI* client, uint32_t sessionId)
+{
+    LocationSessionKey key(client, sessionId);
+    return (mDistanceBasedTrackingSessions.find(key) != mDistanceBasedTrackingSessions.end());
 }
 
 bool
@@ -2177,27 +2137,75 @@ bool
 GnssAdapter::isTrackingSession(LocationAPI* client, uint32_t sessionId)
 {
     LocationSessionKey key(client, sessionId);
-    return (mTrackingSessions.find(key) != mTrackingSessions.end());
+    return (mTimeBasedTrackingSessions.find(key) != mTimeBasedTrackingSessions.end());
+}
+
+void
+GnssAdapter::reportPowerStateIfChanged()
+{
+    bool newPowerOn = !mTimeBasedTrackingSessions.empty() ||
+                      !mDistanceBasedTrackingSessions.empty();
+    if (newPowerOn != mPowerOn) {
+        mPowerOn = newPowerOn;
+        if (mPowerStateCb != nullptr) {
+            mPowerStateCb(mPowerOn);
+        }
+    }
+}
+
+void
+GnssAdapter::getPowerStateChangesCommand(void* powerStateCb)
+{
+    LOC_LOGD("%s]: ", __func__);
+
+    struct MsgReportLocation : public LocMsg {
+        GnssAdapter& mAdapter;
+        powerStateCallback mPowerStateCb;
+        inline MsgReportLocation(GnssAdapter& adapter,
+                                 powerStateCallback powerStateCb) :
+            LocMsg(),
+            mAdapter(adapter),
+            mPowerStateCb(powerStateCb) {}
+        inline virtual void proc() const {
+            mAdapter.savePowerStateCallback(mPowerStateCb);
+            mPowerStateCb(mAdapter.getPowerState());
+        }
+    };
+
+    sendMsg(new MsgReportLocation(*this, (powerStateCallback)powerStateCb));
 }
 
 void
 GnssAdapter::saveTrackingSession(LocationAPI* client, uint32_t sessionId,
-                                 const TrackingOptions& trackingOptions)
+                                const TrackingOptions& options)
 {
     LocationSessionKey key(client, sessionId);
-    mTrackingSessions[key] = trackingOptions;
+    if ((options.minDistance > 0) &&
+            ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
+        mDistanceBasedTrackingSessions[key] = options;
+    } else {
+        mTimeBasedTrackingSessions[key] = options;
+    }
+    reportPowerStateIfChanged();
 }
 
 void
 GnssAdapter::eraseTrackingSession(LocationAPI* client, uint32_t sessionId)
 {
     LocationSessionKey key(client, sessionId);
-    auto itr = mTrackingSessions.find(key);
-    if (itr != mTrackingSessions.end()) {
-        mTrackingSessions.erase(itr);
+    auto it = mTimeBasedTrackingSessions.find(key);
+    if (it != mTimeBasedTrackingSessions.end()) {
+        mTimeBasedTrackingSessions.erase(it);
+    } else {
+        auto itr = mDistanceBasedTrackingSessions.find(key);
+        if (itr != mDistanceBasedTrackingSessions.end()) {
+            mDistanceBasedTrackingSessions.erase(itr);
+        }
     }
+    reportPowerStateIfChanged();
 }
 
+
 bool GnssAdapter::setLocPositionMode(const LocPosMode& mode) {
     if (!mLocPositionMode.equals(mode)) {
         mLocPositionMode = mode;
@@ -2271,45 +2279,62 @@ GnssAdapter::startTrackingCommand(LocationAPI* client, TrackingOptions& options)
         LocApiBase& mApi;
         LocationAPI* mClient;
         uint32_t mSessionId;
-        mutable TrackingOptions mTrackingOptions;
+        mutable TrackingOptions mOptions;
         inline MsgStartTracking(GnssAdapter& adapter,
                                LocApiBase& api,
                                LocationAPI* client,
                                uint32_t sessionId,
-                               TrackingOptions trackingOptions) :
+                               TrackingOptions options) :
             LocMsg(),
             mAdapter(adapter),
             mApi(api),
             mClient(client),
             mSessionId(sessionId),
-            mTrackingOptions(trackingOptions) {}
+            mOptions(options) {}
         inline virtual void proc() const {
+            // distance based tracking will need to know engine capabilities before it can start
+            if (!mAdapter.isEngineCapabilitiesKnown() && mOptions.minDistance > 0) {
+                mAdapter.mPendingMsgs.push_back(new MsgStartTracking(*this));
+                return;
+            }
             LocationError err = LOCATION_ERROR_SUCCESS;
             if (!mAdapter.hasTrackingCallback(mClient) &&
                 !mAdapter.hasMeasurementsCallback(mClient)) {
                 err = LOCATION_ERROR_CALLBACK_MISSING;
-            } else if (0 == mTrackingOptions.size) {
+            } else if (0 == mOptions.size) {
                 err = LOCATION_ERROR_INVALID_PARAMETER;
             } else {
-                if (GNSS_POWER_MODE_INVALID != mTrackingOptions.powerMode &&
-                        !ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02)) {
-                    LOC_LOGv("Ignoring power mode, feature not supported.");
-                    mTrackingOptions.powerMode = GNSS_POWER_MODE_INVALID;
+                if (mOptions.minInterval < MIN_TRACKING_INTERVAL) {
+                    mOptions.minInterval = MIN_TRACKING_INTERVAL;
                 }
-                if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02) &&
-                        GNSS_POWER_MODE_M4 == mTrackingOptions.powerMode &&
-                        mTrackingOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
-                    LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
-                            mTrackingOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
-                    mTrackingOptions.powerMode = GNSS_POWER_MODE_M2;
-                }
-                // Api doesn't support multiple clients for time based tracking, so mutiplex
-                bool reportToClientWithNoWait =
-                        mAdapter.startTrackingMultiplex(mClient, mSessionId, mTrackingOptions);
-                mAdapter.saveTrackingSession(mClient, mSessionId, mTrackingOptions);
+                if (mOptions.minDistance > 0 &&
+                        ContextBase::isMessageSupported(
+                        LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
+                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
+                    mApi.startDistanceBasedTracking(mSessionId, mOptions,
+                            new LocApiResponse(*mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId, mClient = mClient]
+                            (LocationError err) {
+                        if (LOCATION_ERROR_SUCCESS != err) {
+                            mAdapter.eraseTrackingSession(mClient, mSessionId);
+                        }
+                        mAdapter.reportResponse(mClient, err, mSessionId);
+                    }));
+                } else {
+                    if (GNSS_POWER_MODE_M4 == mOptions.powerMode &&
+                            mOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
+                        LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
+                                mOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
+                        mOptions.powerMode = GNSS_POWER_MODE_M2;
+                    }
+                    // Api doesn't support multiple clients for time based tracking, so mutiplex
+                    bool reportToClientWithNoWait =
+                            mAdapter.startTimeBasedTrackingMultiplex(mClient, mSessionId, mOptions);
+                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
 
-                if (reportToClientWithNoWait) {
-                    mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
+                    if (reportToClientWithNoWait) {
+                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
+                    }
                 }
             }
         }
@@ -2321,13 +2346,13 @@ GnssAdapter::startTrackingCommand(LocationAPI* client, TrackingOptions& options)
 }
 
 bool
-GnssAdapter::startTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
-                                    const TrackingOptions& options)
+GnssAdapter::startTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
+                                             const TrackingOptions& options)
 {
     bool reportToClientWithNoWait = true;
 
-    if (mTrackingSessions.empty()) {
-        startTracking(client, sessionId, options);
+    if (mTimeBasedTrackingSessions.empty()) {
+        startTimeBasedTracking(client, sessionId, options);
         // need to wait for QMI callback
         reportToClientWithNoWait = false;
     } else {
@@ -2335,7 +2360,7 @@ GnssAdapter::startTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
         TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
         GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
         memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
-        for (auto it = mTrackingSessions.begin(); it != mTrackingSessions.end(); ++it) {
+        for (auto it = mTimeBasedTrackingSessions.begin(); it != mTimeBasedTrackingSessions.end(); ++it) {
             // if not set or there is a new smallest interval, then set the new interval
             if (0 == multiplexedOptions.size ||
                 it->second.minInterval < multiplexedOptions.minInterval) {
@@ -2361,7 +2386,8 @@ GnssAdapter::startTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
         }
         if (updateOptions) {
             // restart time based tracking with the newly updated options
-            startTracking(client, sessionId, multiplexedOptions);
+
+            startTimeBasedTracking(client, sessionId, multiplexedOptions);
             // need to wait for QMI callback
             reportToClientWithNoWait = false;
         }
@@ -2372,9 +2398,13 @@ GnssAdapter::startTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
 }
 
 void
-GnssAdapter::startTracking(LocationAPI* client, uint32_t sessionId,
+GnssAdapter::startTimeBasedTracking(LocationAPI* client, uint32_t sessionId,
         const TrackingOptions& trackingOptions)
 {
+    LOC_LOGd("minInterval %u minDistance %u mode %u powermode %u tbm %u",
+            trackingOptions.minInterval, trackingOptions.minDistance,
+            trackingOptions.mode, trackingOptions.powerMode, trackingOptions.tbm);
+
     LocPosMode locPosMode = {};
     convertOptions(locPosMode, trackingOptions);
 
@@ -2382,7 +2412,7 @@ GnssAdapter::startTracking(LocationAPI* client, uint32_t sessionId,
     mEngHubProxy->gnssSetFixMode(locPosMode);
     mEngHubProxy->gnssStartFix();
 
-    mLocApi->startFix(locPosMode, new LocApiResponse(*getContext(),
+    mLocApi->startTimeBasedTracking(trackingOptions, new LocApiResponse(*getContext(),
                       [this, client, sessionId] (LocationError err) {
             if (LOCATION_ERROR_SUCCESS != err) {
                 eraseTrackingSession(client, sessionId);
@@ -2404,7 +2434,7 @@ GnssAdapter::updateTracking(LocationAPI* client, uint32_t sessionId,
     mEngHubProxy->gnssSetFixMode(locPosMode);
     mEngHubProxy->gnssStartFix();
 
-    mLocApi->startFix(locPosMode, new LocApiResponse(*getContext(),
+    mLocApi->startTimeBasedTracking(updatedOptions, new LocApiResponse(*getContext(),
                       [this, client, sessionId, oldOptions] (LocationError err) {
             if (LOCATION_ERROR_SUCCESS != err) {
                 // restore the old LocationOptions
@@ -2417,35 +2447,6 @@ GnssAdapter::updateTracking(LocationAPI* client, uint32_t sessionId,
 }
 
 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
-            if (mAdapter.setLocPositionMode(mLocPosMode)) {
-                mAdapter.mEngHubProxy->gnssSetFixMode(mLocPosMode);
-                mApi.setPositionMode(mLocPosMode);
-            }
-        }
-    };
-
-    sendMsg(new MsgSetPositionMode(*this, *mLocApi, locPosMode));
-}
-
-void
 GnssAdapter::updateTrackingOptionsCommand(LocationAPI* client, uint32_t id,
                                           TrackingOptions& options)
 {
@@ -2457,49 +2458,108 @@ GnssAdapter::updateTrackingOptionsCommand(LocationAPI* client, uint32_t id,
         LocApiBase& mApi;
         LocationAPI* mClient;
         uint32_t mSessionId;
-        mutable TrackingOptions mTrackingOptions;
+        mutable TrackingOptions mOptions;
         inline MsgUpdateTracking(GnssAdapter& adapter,
                                 LocApiBase& api,
                                 LocationAPI* client,
                                 uint32_t sessionId,
-                                TrackingOptions trackingOptions) :
+                                TrackingOptions options) :
             LocMsg(),
             mAdapter(adapter),
             mApi(api),
             mClient(client),
             mSessionId(sessionId),
-            mTrackingOptions(trackingOptions) {}
+            mOptions(options) {}
         inline virtual void proc() const {
-            if (mAdapter.isTrackingSession(mClient, mSessionId)) {
-                LocationError err = LOCATION_ERROR_SUCCESS;
-                if (0 == mTrackingOptions.size) {
-                    err = LOCATION_ERROR_INVALID_PARAMETER;
-                } else {
-                    if (GNSS_POWER_MODE_INVALID != mTrackingOptions.powerMode &&
-                            !ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02)) {
-                        LOC_LOGv("Ignoring power mode, feature not supported.");
-                        mTrackingOptions.powerMode = GNSS_POWER_MODE_INVALID;
-                    }
-                    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02) &&
-                            GNSS_POWER_MODE_M4 == mTrackingOptions.powerMode &&
-                            mTrackingOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
-                        LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
-                                mTrackingOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
-                        mTrackingOptions.powerMode = GNSS_POWER_MODE_M2;
+            // distance based tracking will need to know engine capabilities before it can start
+            if (!mAdapter.isEngineCapabilitiesKnown() && mOptions.minDistance > 0) {
+                mAdapter.mPendingMsgs.push_back(new MsgUpdateTracking(*this));
+                return;
+            }
+            LocationError err = LOCATION_ERROR_SUCCESS;
+            bool isTimeBased = mAdapter.isTimeBasedTrackingSession(mClient, mSessionId);
+            bool isDistanceBased = mAdapter.isDistanceBasedTrackingSession(mClient, mSessionId);
+            if (!isTimeBased && !isDistanceBased) {
+                err = LOCATION_ERROR_ID_UNKNOWN;
+            } else if (0 == mOptions.size) {
+                err = LOCATION_ERROR_INVALID_PARAMETER;
+            }
+            if (LOCATION_ERROR_SUCCESS != err) {
+                mAdapter.reportResponse(mClient, err, mSessionId);
+            } else {
+                if (GNSS_POWER_MODE_M4 == mOptions.powerMode &&
+                        mOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
+                    LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
+                            mOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
+                    mOptions.powerMode = GNSS_POWER_MODE_M2;
+                }
+                if (mOptions.minInterval < MIN_TRACKING_INTERVAL) {
+                    mOptions.minInterval = MIN_TRACKING_INTERVAL;
+                }
+                // Now update session as required
+                if (isTimeBased && mOptions.minDistance > 0) {
+                    // switch from time based to distance based
+                    // Api doesn't support multiple clients for time based tracking, so mutiplex
+                    bool reportToClientWithNoWait =
+                        mAdapter.stopTimeBasedTrackingMultiplex(mClient, mSessionId);
+                    // erases the time based Session
+                    mAdapter.eraseTrackingSession(mClient, mSessionId);
+                    if (reportToClientWithNoWait) {
+                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
                     }
+                    // saves as distance based Session
+                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
+                    mApi.startDistanceBasedTracking(mSessionId, mOptions,
+                            new LocApiResponse(*mAdapter.getContext(),
+                                        [] (LocationError /*err*/) {}));
+                } else if (isDistanceBased && mOptions.minDistance == 0) {
+                    // switch from distance based to time based
+                    mAdapter.eraseTrackingSession(mClient, mSessionId);
+                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
+                            *mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId, mOptions = mOptions,
+                            mClient = mClient] (LocationError /*err*/) {
+                        // Api doesn't support multiple clients for time based tracking,
+                        // so mutiplex
+                        bool reportToClientWithNoWait =
+                                mAdapter.startTimeBasedTrackingMultiplex(mClient, mSessionId,
+                                                                         mOptions);
+                        mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
+
+                        if (reportToClientWithNoWait) {
+                            mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
+                        }
+                    }));
+                } else if (isTimeBased) {
+                    // update time based tracking
                     // Api doesn't support multiple clients for time based tracking, so mutiplex
                     bool reportToClientWithNoWait =
-                            mAdapter.updateTrackingMultiplex(mClient, mSessionId, mTrackingOptions);
-                    mAdapter.saveTrackingSession(mClient, mSessionId, mTrackingOptions);
+                            mAdapter.updateTrackingMultiplex(mClient, mSessionId, mOptions);
+                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
 
                     if (reportToClientWithNoWait) {
                         mAdapter.reportResponse(mClient, err, mSessionId);
                     }
+                } else if (isDistanceBased) {
+                    // restart distance based tracking
+                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
+                            *mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId, mOptions = mOptions,
+                            mClient = mClient, &mApi = mApi] (LocationError err) {
+                        if (LOCATION_ERROR_SUCCESS == err) {
+                            mApi.startDistanceBasedTracking(mSessionId, mOptions,
+                                    new LocApiResponse(*mAdapter.getContext(),
+                                    [&mAdapter, mClient, mSessionId, mOptions]
+                                    (LocationError err) {
+                                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
         }
     };
 
@@ -2514,19 +2574,21 @@ GnssAdapter::updateTrackingMultiplex(LocationAPI* client, uint32_t id,
 
     LocationSessionKey key(client, id);
     // get the session we are updating
-    auto it = mTrackingSessions.find(key);
+    auto it = mTimeBasedTrackingSessions.find(key);
 
     // cache the clients existing LocationOptions
     TrackingOptions oldOptions = it->second;
 
     // if session we are updating exists and the minInterval or powerMode has changed
-    if (it != mTrackingSessions.end() && (it->second.minInterval != trackingOptions.minInterval ||
+    if (it != mTimeBasedTrackingSessions.end() &&
+       (it->second.minInterval != trackingOptions.minInterval ||
         it->second.powerMode != trackingOptions.powerMode)) {
         // find the smallest interval and powerMode, other than the session we are updating
         TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
         GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
         memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
-        for (auto it2 = mTrackingSessions.begin(); it2 != mTrackingSessions.end(); ++it2) {
+        for (auto it2 = mTimeBasedTrackingSessions.begin();
+             it2 != mTimeBasedTrackingSessions.end(); ++it2) {
             // if session is not the one we are updating and either interval
             // is not set or there is a new smallest interval, then set the new interval
             if (it2->first != key && (0 == multiplexedOptions.size ||
@@ -2553,7 +2615,7 @@ GnssAdapter::updateTrackingMultiplex(LocationAPI* client, uint32_t id,
             updateOptions = true;
         }
         // if only one session exists, then tracking should be updated with it
-        if (1 == mTrackingSessions.size()) {
+        if (1 == mTimeBasedTrackingSessions.size()) {
             multiplexedOptions = trackingOptions;
             updateOptions = true;
         }
@@ -2588,19 +2650,33 @@ GnssAdapter::stopTrackingCommand(LocationAPI* client, uint32_t id)
             mClient(client),
             mSessionId(sessionId) {}
         inline virtual void proc() const {
-            if (mAdapter.isTrackingSession(mClient, mSessionId)) {
-                // Api doesn't support multiple clients for time based tracking, so mutiplex
-                bool reportToClientWithNoWait =
-                        mAdapter.stopTrackingMultiplex(mClient, mSessionId);
-                mAdapter.eraseTrackingSession(mClient, mSessionId);
-
-                if (reportToClientWithNoWait) {
-                    mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
+            bool isTimeBased = mAdapter.isTimeBasedTrackingSession(mClient, mSessionId);
+            bool isDistanceBased = mAdapter.isDistanceBasedTrackingSession(mClient, mSessionId);
+            if (isTimeBased || isDistanceBased) {
+                if (isTimeBased) {
+                    // Api doesn't support multiple clients for time based tracking, so mutiplex
+                    bool reportToClientWithNoWait =
+                        mAdapter.stopTimeBasedTrackingMultiplex(mClient, mSessionId);
+                    mAdapter.eraseTrackingSession(mClient, mSessionId);
+
+                    if (reportToClientWithNoWait) {
+                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
+                    }
+                } else if (isDistanceBased) {
+                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
+                            *mAdapter.getContext(),
+                            [&mAdapter = mAdapter, mSessionId = mSessionId, mClient = mClient]
+                            (LocationError err) {
+                        if (LOCATION_ERROR_SUCCESS == err) {
+                            mAdapter.eraseTrackingSession(mClient, mSessionId);
+                        }
+                        mAdapter.reportResponse(mClient, err, mSessionId);
+                    }));
                 }
+            } else {
+                mAdapter.reportResponse(mClient, LOCATION_ERROR_ID_UNKNOWN, 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
+
         }
     };
 
@@ -2608,11 +2684,11 @@ GnssAdapter::stopTrackingCommand(LocationAPI* client, uint32_t id)
 }
 
 bool
-GnssAdapter::stopTrackingMultiplex(LocationAPI* client, uint32_t id)
+GnssAdapter::stopTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t id)
 {
     bool reportToClientWithNoWait = true;
 
-    if (1 == mTrackingSessions.size()) {
+    if (1 == mTimeBasedTrackingSessions.size()) {
         stopTracking(client, id);
         // need to wait for QMI callback
         reportToClientWithNoWait = false;
@@ -2620,13 +2696,14 @@ GnssAdapter::stopTrackingMultiplex(LocationAPI* client, uint32_t id)
         LocationSessionKey key(client, id);
 
         // get the session we are stopping
-        auto it = mTrackingSessions.find(key);
-        if (it != mTrackingSessions.end()) {
+        auto it = mTimeBasedTrackingSessions.find(key);
+        if (it != mTimeBasedTrackingSessions.end()) {
             // find the smallest interval and powerMode, other than the session we are stopping
             TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
             GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
             memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
-            for (auto it2 = mTrackingSessions.begin(); it2 != mTrackingSessions.end(); ++it2) {
+            for (auto it2 = mTimeBasedTrackingSessions.begin();
+                 it2 != mTimeBasedTrackingSessions.end(); ++it2) {
                 // if session is not the one we are stopping and either interval
                 // is not set or there is a new smallest interval, then set the new interval
                 if (it2->first != key && (0 == multiplexedOptions.size ||
@@ -2646,7 +2723,7 @@ GnssAdapter::stopTrackingMultiplex(LocationAPI* client, uint32_t id)
                 it->second.powerMode < multiplexedPowerMode) {
                 multiplexedOptions.powerMode = multiplexedPowerMode;
                 // restart time based tracking with the newly updated options
-                startTracking(client, id, multiplexedOptions);
+                startTimeBasedTracking(client, id, multiplexedOptions);
                 // need to wait for QMI callback
                 reportToClientWithNoWait = false;
             }
@@ -2765,7 +2842,6 @@ GnssAdapter::gnssNiResponseCommand(GnssNiResponse response, void* rawRequest)
         inline virtual ~MsgGnssNiResponse() {
         }
         inline virtual void proc() const {
-            const void *rawPayload = mPayload;
             mApi.informNiResponse(mResponse, mPayload);
         }
     };
@@ -2799,21 +2875,24 @@ GnssAdapter::enableCommand(LocationTechnologyType techType)
             mTechType(techType) {}
         inline virtual void proc() const {
             LocationError err = LOCATION_ERROR_SUCCESS;
-            uint32_t powerVoteId = mAdapter.getPowerVoteId();
+            uint32_t powerVoteId = mAdapter.getAfwControlId();
             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);
+                mAdapter.setAfwControlId(mSessionId);
 
-                mApi.sendMsg(new LocApiMsg([&mApi = mApi] () {
-                    mApi.setGpsLockSync(GNSS_CONFIG_GPS_LOCK_NONE);
-               }));
-
-                mAdapter.mXtraObserver.updateLockStatus(
-                        mAdapter.convertGpsLock(GNSS_CONFIG_GPS_LOCK_NONE));
+                GnssConfigGpsLock gpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
+                if (NULL != mAdapter.mNfwCb) {
+                    ContextBase::mGps_conf.GPS_LOCK &= GNSS_CONFIG_GPS_LOCK_NI;
+                    gpsLock = ContextBase::mGps_conf.GPS_LOCK;
+                }
+                mApi.sendMsg(new LocApiMsg([&mApi = mApi, gpsLock]() {
+                    mApi.setGpsLockSync(gpsLock);
+                }));
+                mAdapter.mXtraObserver.updateLockStatus(gpsLock);
             }
             mAdapter.reportResponse(err, mSessionId);
         }
@@ -2849,20 +2928,23 @@ GnssAdapter::disableCommand(uint32_t id)
             mSessionId(sessionId) {}
         inline virtual void proc() const {
             LocationError err = LOCATION_ERROR_SUCCESS;
-            uint32_t powerVoteId = mAdapter.getPowerVoteId();
+            uint32_t powerVoteId = mAdapter.getAfwControlId();
             if (powerVoteId != mSessionId) {
                 err = LOCATION_ERROR_ID_UNKNOWN;
             } else {
                 mContext.modemPowerVote(false);
-                mAdapter.setPowerVoteId(0);
+                mAdapter.setAfwControlId(0);
 
-                GnssConfigGpsLock gpsLock =
-                    mAdapter.convertGpsLock(ContextBase::mGps_conf.GPS_LOCK);
+                if (NULL != mAdapter.mNfwCb) {
+                    /* We need to disable MO (AFW) */
+                    ContextBase::mGps_conf.GPS_LOCK |= GNSS_CONFIG_GPS_LOCK_MO;
+                }
+                GnssConfigGpsLock gpsLock = ContextBase::mGps_conf.GPS_LOCK;
                 mApi.sendMsg(new LocApiMsg([&mApi = mApi,gpsLock] () {
                     mApi.setGpsLockSync(gpsLock);
                 }));
                 mAdapter.mXtraObserver.updateLockStatus(
-                        mAdapter.convertGpsLock(ContextBase::mGps_conf.GPS_LOCK));
+                        ContextBase::mGps_conf.GPS_LOCK);
             }
             mAdapter.reportResponse(err, mSessionId);
         }
@@ -2962,9 +3044,9 @@ GnssAdapter::reportPositionEvent(const UlpLocation& ulpLocation,
 }
 
 bool
-GnssAdapter::needReport(const UlpLocation& ulpLocation,
-                        enum loc_sess_status status,
-                        LocPosTechMask techMask) {
+GnssAdapter::needReportForGnssClient(const UlpLocation& ulpLocation,
+                                     enum loc_sess_status status,
+                                     LocPosTechMask techMask) {
     bool reported = false;
 
     // if engine hub is enabled, aka, any of the engine services is enabled,
@@ -2977,53 +3059,83 @@ GnssAdapter::needReport(const UlpLocation& ulpLocation,
     return reported;
 }
 
+bool
+GnssAdapter::needReportForFlpClient(enum loc_sess_status status,
+                                    LocPosTechMask techMask) {
+    if ((status == LOC_SESS_INTERMEDIATE) &&
+        !(techMask & LOC_POS_TECH_MASK_SENSORS) &&
+        (!getAllowFlpNetworkFixes())) {
+        return false;
+    } else {
+        return true;
+    }
+}
+
+bool
+GnssAdapter::isFlpClient(LocationCallbacks& locationCallbacks)
+{
+    return (locationCallbacks.gnssLocationInfoCb == nullptr &&
+            locationCallbacks.gnssSvCb == nullptr &&
+            locationCallbacks.gnssNmeaCb == nullptr &&
+            locationCallbacks.gnssDataCb == nullptr &&
+            locationCallbacks.gnssMeasurementsCb == nullptr);
+}
+
 void
 GnssAdapter::reportPosition(const UlpLocation& ulpLocation,
                             const GpsLocationExtended& locationExtended,
                             enum loc_sess_status status,
                             LocPosTechMask techMask)
 {
-    bool reported = needReport(ulpLocation, status, techMask);
-    mGnssSvIdUsedInPosAvail = false;
-    if (reported) {
-        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA) {
-            mGnssSvIdUsedInPosAvail = true;
-            mGnssSvIdUsedInPosition = locationExtended.gnss_sv_used_ids;
-        }
+    bool reportToGnssClient = needReportForGnssClient(ulpLocation, status, techMask);
+    bool reportToFlpClient = needReportForFlpClient(status, techMask);
 
+    if (reportToGnssClient || reportToFlpClient) {
         GnssLocationInfoNotification locationInfo = {};
         convertLocationInfo(locationInfo, locationExtended);
         convertLocation(locationInfo.location, ulpLocation, locationExtended, techMask);
 
         for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
-            if (nullptr != it->second.gnssLocationInfoCb) {
-                it->second.gnssLocationInfoCb(locationInfo);
-            } else if (nullptr != it->second.trackingCb) {
-                it->second.trackingCb(locationInfo.location);
+            if ((reportToFlpClient && isFlpClient(it->second)) ||
+               (reportToGnssClient && !isFlpClient(it->second))) {
+                if (nullptr != it->second.gnssLocationInfoCb) {
+                    it->second.gnssLocationInfoCb(locationInfo);
+                } else if (nullptr != it->second.trackingCb) {
+                    it->second.trackingCb(locationInfo.location);
+                }
             }
         }
 
-        // if engine hub is running and the fix is from sensor, e.g.: DRE,
-        // inject DRE fix to modem
-        if ((1 == ContextBase::mGps_conf.POSITION_ASSISTED_CLOCK_ESTIMATOR_ENABLED) &&
-                (true == initEngHubProxy()) && (LOC_POS_TECH_MASK_SENSORS & techMask)) {
-            mLocApi->injectPosition(locationInfo, false);
+        mGnssSvIdUsedInPosAvail = false;
+        if (reportToGnssClient) {
+            if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA) {
+                mGnssSvIdUsedInPosAvail = true;
+                mGnssSvIdUsedInPosition = locationExtended.gnss_sv_used_ids;
+            }
+
+            // if engine hub is running and the fix is from sensor, e.g.: DRE,
+            // inject DRE fix to modem
+            if ((1 == ContextBase::mGps_conf.POSITION_ASSISTED_CLOCK_ESTIMATOR_ENABLED) &&
+                    (true == initEngHubProxy()) && (LOC_POS_TECH_MASK_SENSORS & techMask)) {
+                mLocApi->injectPosition(locationInfo, false);
+            }
         }
     }
 
-    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER && !mTrackingSessions.empty()) {
+    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER &&
+        !mTimeBasedTrackingSessions.empty()) {
         /*Only BlankNMEA sentence needs to be processed and sent, if both lat, long is 0 &
           horReliability is not set. */
         bool blank_fix = ((0 == ulpLocation.gpsLocation.latitude) &&
                           (0 == ulpLocation.gpsLocation.longitude) &&
                           (LOC_RELIABILITY_NOT_SET == locationExtended.horizontal_reliability));
-        uint8_t generate_nmea = (reported && status != LOC_SESS_FAILURE && !blank_fix);
+        uint8_t generate_nmea = (reportToGnssClient && status != LOC_SESS_FAILURE && !blank_fix);
         std::vector<std::string> nmeaArraystr;
         loc_nmea_generate_pos(ulpLocation, locationExtended, mLocSystemInfo,
                               generate_nmea, nmeaArraystr);
         stringstream ss;
-        for (auto sentence : nmeaArraystr) {
-            ss << sentence;
+        for (auto itor = nmeaArraystr.begin(); itor != nmeaArraystr.end(); ++itor) {
+            ss << *itor;
         }
         string s = ss.str();
         reportNmea(s.c_str(), s.length());
@@ -3114,12 +3226,13 @@ GnssAdapter::reportSv(GnssSvNotification& svNotify)
         }
     }
 
-    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER && !mTrackingSessions.empty()) {
+    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER &&
+        !mTimeBasedTrackingSessions.empty()) {
         std::vector<std::string> nmeaArraystr;
         loc_nmea_generate_sv(svNotify, nmeaArraystr);
         stringstream ss;
-        for (auto sentence : nmeaArraystr) {
-            ss << sentence;
+        for (auto itor = nmeaArraystr.begin(); itor != nmeaArraystr.end(); ++itor) {
+            ss << *itor;
         }
         string s = ss.str();
         reportNmea(s.c_str(), s.length());
@@ -3309,8 +3422,8 @@ GnssAdapter::reportLocationSystemInfo(const LocationSystemInfo & locationSystemI
                 LEAP_SECOND_SYS_INFO_CURRENT_LEAP_SECONDS_BIT;
             dstLeapSecondSysInfo.leapSecondCurrent = srcLeapSecondSysInfo.leapSecondCurrent;
         }
-        // once leap second change event is complete, modem may send up event invalidate the leap second
-        // change info while AP is still processing report during leap second transition
+        // once leap second change event is complete, modem may send up event invalidate the leap
+        // second change info while AP is still processing report during leap second transition
         // so, we choose to keep this info around even though it is old
         if (srcLeapSecondSysInfo.leapSecondInfoMask & LEAP_SECOND_SYS_INFO_LEAP_SECOND_CHANGE_BIT) {
             dstLeapSecondSysInfo.leapSecondInfoMask |= LEAP_SECOND_SYS_INFO_LEAP_SECOND_CHANGE_BIT;
@@ -3462,20 +3575,21 @@ GnssAdapter::requestNiNotify(const GnssNiNotification& notify, const void* data)
 }
 
 void
-GnssAdapter::reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurements,
+GnssAdapter::reportGnssMeasurementsEvent(const GnssMeasurements& gnssMeasurements,
                                             int msInWeek)
 {
     LOC_LOGD("%s]: msInWeek=%d", __func__, msInWeek);
 
     struct MsgReportGnssMeasurementData : public LocMsg {
         GnssAdapter& mAdapter;
+        GnssMeasurements mGnssMeasurements;
         GnssMeasurementsNotification mMeasurementsNotify;
         inline MsgReportGnssMeasurementData(GnssAdapter& adapter,
-                                            const GnssMeasurementsNotification& measurements,
+                                            const GnssMeasurements& gnssMeasurements,
                                             int msInWeek) :
                 LocMsg(),
                 mAdapter(adapter),
-                mMeasurementsNotify(measurements) {
+                mMeasurementsNotify(gnssMeasurements.gnssMeasNotification) {
             if (-1 != msInWeek) {
                 mAdapter.getAgcInformation(mMeasurementsNotify, msInWeek);
             }
@@ -3485,7 +3599,8 @@ GnssAdapter::reportGnssMeasurementDataEvent(const GnssMeasurementsNotification&
         }
     };
 
-    sendMsg(new MsgReportGnssMeasurementData(*this, measurements, msInWeek));
+    sendMsg(new MsgReportGnssMeasurementData(*this, gnssMeasurements, msInWeek));
+    mEngHubProxy->gnssReportSvMeasurement(gnssMeasurements.gnssSvMeasurementSet);
 }
 
 void
@@ -3499,13 +3614,6 @@ GnssAdapter::reportGnssMeasurementData(const GnssMeasurementsNotification& measu
 }
 
 void
-GnssAdapter::reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet)
-{
-    LOC_LOGD("%s]: ", __func__);
-    mEngHubProxy->gnssReportSvMeasurement(svMeasurementSet);
-}
-
-void
 GnssAdapter::reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial)
 {
     LOC_LOGD("%s]: ", __func__);
@@ -3587,24 +3695,24 @@ void GnssAdapter::requestOdcpi(const OdcpiRequestInfo& request)
 bool GnssAdapter::reportDeleteAidingDataEvent(GnssAidingData& aidingData)
 {
     LOC_LOGD("%s]:", __func__);
+    mEngHubProxy->gnssDeleteAidingData(aidingData);
+    return true;
+}
 
-    struct MsgHandleDeleteAidingDataEvent : public LocMsg {
-        GnssAdapter& mAdapter;
-        GnssAidingData mData;
-        inline MsgHandleDeleteAidingDataEvent(GnssAdapter& adapter,
-                                   GnssAidingData& data) :
-            LocMsg(),
-            mAdapter(adapter),
-            mData(data) {}
-        inline virtual void proc() const {
-            mAdapter.mEngHubProxy->gnssDeleteAidingData(mData);
-        }
-    };
-
-    sendMsg(new MsgHandleDeleteAidingDataEvent(*this, aidingData));
+bool GnssAdapter::reportKlobucharIonoModelEvent(GnssKlobucharIonoModel & ionoModel)
+{
+    LOC_LOGD("%s]:", __func__);
+    mEngHubProxy->gnssReportKlobucharIonoModel(ionoModel);
     return true;
 }
 
+bool GnssAdapter::reportGnssAdditionalSystemInfoEvent(
+        GnssAdditionalSystemInfo & additionalSystemInfo)
+{
+    LOC_LOGD("%s]:", __func__);
+    mEngHubProxy->gnssReportAdditionalSystemInfo(additionalSystemInfo);
+    return true;
+}
 
 void GnssAdapter::initOdcpiCommand(const OdcpiRequestCallback& callback)
 {
@@ -3821,6 +3929,52 @@ void GnssAdapter::initAgpsCommand(const AgpsCbInfo& cbInfo){
     sendMsg(new AgpsMsgInit(cbInfo, *this));
 }
 
+void GnssAdapter::initNfwCommand(const NfwCbInfo& cbInfo) {
+    LOC_LOGi("GnssAdapter::initNfwCommand");
+
+    /* Message to initialize NFW */
+    struct MsgInitNfw : public LocMsg {
+        const NfwCbInfo mCbInfo;
+        GnssAdapter& mAdapter;
+
+        inline MsgInitNfw(const NfwCbInfo& cbInfo,
+            GnssAdapter& adapter) :
+            LocMsg(), mCbInfo(cbInfo), mAdapter(adapter) {
+            LOC_LOGv("MsgInitNfw");
+        }
+
+        inline virtual void proc() const {
+            LOC_LOGv("MsgInitNfw::proc()");
+            mAdapter.initNfw(mCbInfo);
+        }
+    };
+
+    /* Send message to initialize NFW */
+    sendMsg(new MsgInitNfw(cbInfo, *this));
+}
+
+void GnssAdapter::reportNfwNotificationEvent(GnssNfwNotification& notification) {
+    LOC_LOGi("GnssAdapter::reportNfwNotificationEvent");
+
+    struct MsgReportNfwNotification : public LocMsg {
+        const GnssNfwNotification mNotification;
+        GnssAdapter& mAdapter;
+
+        inline MsgReportNfwNotification(const GnssNfwNotification& notification,
+            GnssAdapter& adapter) :
+            LocMsg(), mNotification(notification), mAdapter(adapter) {
+            LOC_LOGv("MsgReportNfwNotification");
+        }
+
+        inline virtual void proc() const {
+            LOC_LOGv("MsgReportNfwNotification::proc()");
+            mAdapter.reportNfwNotification(mNotification);
+        }
+    };
+
+    sendMsg(new MsgReportNfwNotification(notification, *this));
+}
+
 /* GnssAdapter::requestATL
  * Method triggered in QMI thread as part of handling below message:
  * eQMI_LOC_SERVER_REQUEST_OPEN_V02
@@ -3895,6 +4049,8 @@ void GnssAdapter::dataConnOpenCommand(
             LOC_LOGV("AgpsMsgAtlOpenSuccess");
             if (mApnName == nullptr) {
                 LOC_LOGE("%s] new allocation failed, fatal error.", __func__);
+                // Reporting the failure here
+                mAgpsManager->reportAtlClosed(mAgpsType);
                 return;
             }
             memcpy(mApnName, apnName, apnLen);
@@ -3911,9 +4067,15 @@ void GnssAdapter::dataConnOpenCommand(
             mAgpsManager->reportAtlOpenSuccess(mAgpsType, mApnName, mApnLen, mBearerType);
         }
     };
-
-    sendMsg( new AgpsMsgAtlOpenSuccess(
-            &mAgpsManager, agpsType, apnName, apnLen, bearerType));
+    // Added inital length checks for apnlen check to avoid security issues
+    // In case of failure reporting the same
+    if (NULL == apnName || apnLen <= 0 || apnLen > MAX_APN_LEN || (strlen(apnName) != apnLen)) {
+        LOC_LOGe("%s]: incorrect apnlen length or incorrect apnName", __func__);
+        mAgpsManager.reportAtlClosed(agpsType);
+    } else {
+        sendMsg( new AgpsMsgAtlOpenSuccess(
+                    &mAgpsManager, agpsType, apnName, apnLen, bearerType));
+    }
 }
 
 void GnssAdapter::dataConnClosedCommand(AGpsExtType agpsType){
@@ -4402,6 +4564,37 @@ GnssAdapter::getGnssEnergyConsumedCommand(GnssEnergyConsumedCallback energyConsu
     sendMsg(new MsgGetGnssEnergyConsumed(*this, *mLocApi, energyConsumedCb));
 }
 
+void
+GnssAdapter::nfwControlCommand(bool enable) {
+    struct MsgenableNfwLocationAccess : public LocMsg {
+        GnssAdapter& mAdapter;
+        LocApiBase& mApi;
+        bool mEnable;
+        inline MsgenableNfwLocationAccess(GnssAdapter& adapter, LocApiBase& api,
+            bool enable) :
+            LocMsg(),
+            mAdapter(adapter),
+            mApi(api),
+            mEnable(enable) {}
+        inline virtual void proc() const {
+            GnssConfigGpsLock gpsLock;
+
+            gpsLock = ContextBase::mGps_conf.GPS_LOCK;
+            if (mEnable) {
+                gpsLock &= ~GNSS_CONFIG_GPS_LOCK_NI;
+            } else {
+                gpsLock |= GNSS_CONFIG_GPS_LOCK_NI;
+            }
+            ContextBase::mGps_conf.GPS_LOCK = gpsLock;
+            mApi.sendMsg(new LocApiMsg([&mApi = mApi, gpsLock]() {
+                mApi.setGpsLockSync((GnssConfigGpsLock)gpsLock);
+            }));
+        }
+    };
+
+    sendMsg(new MsgenableNfwLocationAccess(*this, *mLocApi, enable));
+}
+
 /* ==== Eng Hub Proxy ================================================================= */
 /* ======== UTILITIES ================================================================= */
 void
diff --git a/gnss/GnssAdapter.h b/gnss/GnssAdapter.h
index 1682f02..9720ba4 100644
--- a/gnss/GnssAdapter.h
+++ b/gnss/GnssAdapter.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -30,13 +30,14 @@
 #define GNSS_ADAPTER_H
 
 #include <LocAdapterBase.h>
-#include <LocDualContext.h>
+#include <LocContext.h>
 #include <IOsObserver.h>
 #include <EngineHubProxyBase.h>
 #include <LocationAPI.h>
 #include <Agps.h>
 #include <SystemStatus.h>
 #include <XtraSystemStatusObserver.h>
+#include <map>
 
 #define MAX_URL_LEN 256
 #define NMEA_SENTENCE_MAX_LENGTH 200
@@ -48,6 +49,9 @@
 
 class GnssAdapter;
 
+typedef std::map<LocationSessionKey, LocationOptions> LocationSessionMap;
+typedef std::map<LocationSessionKey, TrackingOptions> TrackingOptionsMap;
+
 class OdcpiTimer : public LocTimer {
 public:
     OdcpiTimer(GnssAdapter* adapter) :
@@ -128,19 +132,16 @@ typedef std::function<void(
     uint64_t gnssEnergyConsumedFromFirstBoot
 )> GnssEnergyConsumedCallback;
 
-typedef void (*removeClientCompleteCallback)(LocationAPI* client);
+typedef void (*powerStateCallback)(bool on);
 
 class GnssAdapter : public LocAdapterBase {
 
     /* ==== Engine Hub ===================================================================== */
     EngineHubProxyBase* mEngHubProxy;
 
-    /* ==== CLIENT ========================================================================= */
-    typedef std::map<LocationAPI*, LocationCallbacks> ClientDataMap;
-    ClientDataMap mClientData;
-
     /* ==== TRACKING ======================================================================= */
-    TrackingOptionsMap mTrackingSessions;
+    TrackingOptionsMap mTimeBasedTrackingSessions;
+    LocationSessionMap mDistanceBasedTrackingSessions;
     LocPosMode mLocPositionMode;
     GnssSvUsedInPosition mGnssSvIdUsedInPosition;
     bool mGnssSvIdUsedInPosAvail;
@@ -162,6 +163,12 @@ class GnssAdapter : public LocAdapterBase {
     AgpsCbInfo mAgpsCbInfo;
     void initAgps(const AgpsCbInfo& cbInfo);
 
+    /* ==== NFW =========================================================================== */
+    NfwStatusCb mNfwCb;
+    inline void initNfw(const NfwCbInfo& cbInfo) {
+        mNfwCb = (NfwStatusCb)cbInfo.visibilityControlCb;
+    }
+
     /* ==== ODCPI ========================================================================== */
     OdcpiRequestCallback mOdcpiRequestCb;
     bool mOdcpiRequestActive;
@@ -175,12 +182,16 @@ class GnssAdapter : public LocAdapterBase {
     std::string mMoServerUrl;
     XtraSystemStatusObserver mXtraObserver;
     LocationSystemInfo mLocSystemInfo;
+    std::vector<GnssSvIdSource> mBlacklistedSvIds;
 
     /* === Misc ===================================================================== */
     BlockCPIInfo mBlockCPIInfo;
+    bool mPowerOn;
+    uint32_t mAllowFlpNetworkFixes;
 
     /* === Misc callback from QMI LOC API ============================================== */
     GnssEnergyConsumedCallback mGnssEnergyConsumedCb;
+    powerStateCallback mPowerStateCb;
 
     /*==== CONVERSION ===================================================================*/
     static void convertOptions(LocPosMode& out, const TrackingOptions& trackingOptions);
@@ -193,6 +204,13 @@ class GnssAdapter : public LocAdapterBase {
     /* ======== UTILITIES ================================================================== */
     inline void initOdcpi(const OdcpiRequestCallback& callback);
     inline void injectOdcpi(const Location& location);
+    static bool isFlpClient(LocationCallbacks& locationCallbacks);
+
+protected:
+
+    /* ==== CLIENT ========================================================================= */
+    virtual void updateClientsEventMask();
+    virtual void stopClientSessions(LocationAPI* client);
 
 public:
 
@@ -207,21 +225,7 @@ public:
 
     /* ==== CLIENT ========================================================================= */
     /* ======== COMMANDS ====(Called from Client Thread)==================================== */
-    void addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks);
-    void removeClientCommand(LocationAPI* client,
-                             removeClientCompleteCallback rmClientCb);
-    void requestCapabilitiesCommand(LocationAPI* client);
-    /* ======== UTILITIES ================================================================== */
-    void saveClient(LocationAPI* client, const LocationCallbacks& callbacks);
-    void eraseClient(LocationAPI* client);
-    void notifyClientOfCachedLocationSystemInfo(LocationAPI* client,
-                                                const LocationCallbacks& callbacks);
-    void updateClientsEventMask();
-    void stopClientSessions(LocationAPI* client);
-    LocationCallbacks getClientCallbacks(LocationAPI* client);
-    LocationCapabilitiesMask getCapabilities();
-    void broadcastCapabilities(LocationCapabilitiesMask);
-    void setSuplHostServer(const char* server, int port, LocServerType type);
+    virtual void addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks);
 
     /* ==== TRACKING ======================================================================= */
     /* ======== COMMANDS ====(Called from Client Thread)==================================== */
@@ -230,11 +234,12 @@ public:
     void updateTrackingOptionsCommand(
             LocationAPI* client, uint32_t id, TrackingOptions& trackingOptions);
     void stopTrackingCommand(LocationAPI* client, uint32_t id);
-    virtual void setPositionModeCommand(LocPosMode& locPosMode);
     /* ======== RESPONSES ================================================================== */
     void reportResponse(LocationAPI* client, LocationError err, uint32_t sessionId);
     /* ======== UTILITIES ================================================================== */
     bool hasTrackingCallback(LocationAPI* client);
+    bool isTimeBasedTrackingSession(LocationAPI* client, uint32_t sessionId);
+    bool isDistanceBasedTrackingSession(LocationAPI* client, uint32_t sessionId);
     bool hasMeasurementsCallback(LocationAPI* client);
     bool isTrackingSession(LocationAPI* client, uint32_t sessionId);
     void saveTrackingSession(LocationAPI* client, uint32_t sessionId,
@@ -244,16 +249,16 @@ public:
     bool setLocPositionMode(const LocPosMode& mode);
     LocPosMode& getLocPositionMode() { return mLocPositionMode; }
 
-    bool startTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
-                                const TrackingOptions& trackingOptions);
-    void startTracking(LocationAPI* client, uint32_t sessionId,
-                       const TrackingOptions& trackingOptions);
-    bool stopTrackingMultiplex(LocationAPI* client, uint32_t id);
+    bool startTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
+                                         const TrackingOptions& trackingOptions);
+    void startTimeBasedTracking(LocationAPI* client, uint32_t sessionId,
+            const TrackingOptions& trackingOptions);
+    bool stopTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t id);
     void stopTracking(LocationAPI* client, uint32_t id);
     bool updateTrackingMultiplex(LocationAPI* client, uint32_t id,
-                                 const TrackingOptions& trackingOptions);
+            const TrackingOptions& trackingOptions);
     void updateTracking(LocationAPI* client, uint32_t sessionId,
-        const TrackingOptions& updatedOptions, const TrackingOptions& oldOptions);
+            const TrackingOptions& updatedOptions, const TrackingOptions& oldOptions);
 
     /* ==== NI ============================================================================= */
     /* ======== COMMANDS ====(Called from Client Thread)==================================== */
@@ -278,6 +283,9 @@ public:
     uint32_t gnssDeleteAidingDataCommand(GnssAidingData& data);
     void deleteAidingData(const GnssAidingData &data, uint32_t sessionId);
     void gnssUpdateXtraThrottleCommand(const bool enabled);
+    std::vector<LocationError> gnssUpdateConfig(const std::string& oldServerUrl,
+            const std::string& oldMoServerUrl, const GnssConfig& gnssConfigRequested,
+            const GnssConfig& gnssConfigNeedEngineUpdate, size_t count = 0);
 
     /* ==== GNSS SV TYPE CONFIG ============================================================ */
     /* ==== COMMANDS ====(Called from Client Thread)======================================== */
@@ -304,11 +312,13 @@ public:
     /* ======== COMMANDS ====(Called from Client Thread)==================================== */
     void initDefaultAgpsCommand();
     void initAgpsCommand(const AgpsCbInfo& cbInfo);
+    void initNfwCommand(const NfwCbInfo& cbInfo);
     void dataConnOpenCommand(AGpsExtType agpsType,
             const char* apnName, int apnLen, AGpsBearerType bearerType);
     void dataConnClosedCommand(AGpsExtType agpsType);
     void dataConnFailedCommand(AGpsExtType agpsType);
     void getGnssEnergyConsumedCommand(GnssEnergyConsumedCallback energyConsumedCb);
+    void nfwControlCommand(bool enable);
 
     /* ========= ODCPI ===================================================================== */
     /* ======== COMMANDS ====(Called from Client Thread)==================================== */
@@ -321,9 +331,11 @@ public:
     LocationControlCallbacks& getControlCallbacks() { return mControlCallbacks; }
     void setControlCallbacks(const LocationControlCallbacks& controlCallbacks)
     { mControlCallbacks = controlCallbacks; }
+    void setAfwControlId(uint32_t id) { mPowerVoteId = id; }
+    uint32_t getAfwControlId() { return mPowerVoteId; }
     void setPowerVoteId(uint32_t id) { mPowerVoteId = id; }
     uint32_t getPowerVoteId() { return mPowerVoteId; }
-    virtual bool isInSession() { return !mTrackingSessions.empty(); }
+    virtual bool isInSession() { return !mTimeBasedTrackingSessions.empty(); }
     void initDefaultAgps();
     bool initEngHubProxy();
     void odcpiTimerExpireEvent();
@@ -342,9 +354,8 @@ public:
     virtual void reportNmeaEvent(const char* nmea, size_t length);
     virtual void reportDataEvent(const GnssDataNotification& dataNotify, int msInWeek);
     virtual bool requestNiNotifyEvent(const GnssNiNotification& notify, const void* data);
-    virtual void reportGnssMeasurementDataEvent(const GnssMeasurementsNotification& measurements,
+    virtual void reportGnssMeasurementsEvent(const GnssMeasurements& gnssMeasurements,
                                                 int msInWeek);
-    virtual void reportSvMeasurementEvent(GnssSvMeasurementSet &svMeasurementSet);
     virtual void reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial);
     virtual void reportSvEphemerisEvent(GnssSvEphemerisReport & svEphemeris);
     virtual void reportGnssSvIdConfigEvent(const GnssSvIdConfig& config);
@@ -356,10 +367,15 @@ public:
     virtual bool releaseATL(int connHandle);
     virtual bool requestOdcpiEvent(OdcpiRequestInfo& request);
     virtual bool reportDeleteAidingDataEvent(GnssAidingData& aidingData);
+    virtual bool reportKlobucharIonoModelEvent(GnssKlobucharIonoModel& ionoModel);
+    virtual bool reportGnssAdditionalSystemInfoEvent(
+            GnssAdditionalSystemInfo& additionalSystemInfo);
+    virtual void reportNfwNotificationEvent(GnssNfwNotification& notification);
 
     /* ======== UTILITIES ================================================================= */
-    bool needReport(const UlpLocation& ulpLocation,
+    bool needReportForGnssClient(const UlpLocation& ulpLocation,
             enum loc_sess_status status, LocPosTechMask techMask);
+    bool needReportForFlpClient(enum loc_sess_status status, LocPosTechMask techMask);
     void reportPosition(const UlpLocation &ulpLocation,
                         const GpsLocationExtended &locationExtended,
                         enum loc_sess_status status,
@@ -375,6 +391,11 @@ public:
     void invokeGnssEnergyConsumedCallback(uint64_t energyConsumedSinceFirstBoot);
     void saveGnssEnergyConsumedCallback(GnssEnergyConsumedCallback energyConsumedCb);
     void reportLocationSystemInfo(const LocationSystemInfo & locationSystemInfo);
+    inline void reportNfwNotification(const GnssNfwNotification& notification) {
+        if (NULL != mNfwCb) {
+            mNfwCb(notification);
+        }
+    }
 
     /*======== GNSSDEBUG ================================================================*/
     bool getDebugReport(GnssDebugReport& report);
@@ -389,8 +410,6 @@ public:
     std::string& getMoServerUrl(void) { return mMoServerUrl; }
 
     /*==== CONVERSION ===================================================================*/
-    static uint32_t convertGpsLock(const GnssConfigGpsLock gpsLock);
-    static GnssConfigGpsLock convertGpsLock(const uint32_t gpsLock);
     static uint32_t convertSuplVersion(const GnssConfigSuplVersion suplVersion);
     static uint32_t convertLppProfile(const GnssConfigLppProfile lppProfile);
     static uint32_t convertEP4ES(const GnssConfigEmergencyPdnForEmergencySupl);
@@ -414,6 +433,19 @@ public:
     void injectTimeCommand(int64_t time, int64_t timeReference, int32_t uncertainty);
     void blockCPICommand(double latitude, double longitude, float accuracy,
                          int blockDurationMsec, double latLonDiffThreshold);
+
+    /* ==== MISCELLANEOUS ================================================================== */
+    /* ======== COMMANDS ====(Called from Client Thread)==================================== */
+    void getPowerStateChangesCommand(void* powerStateCb);
+    /* ======== UTILITIES ================================================================== */
+    void reportPowerStateIfChanged();
+    void savePowerStateCallback(powerStateCallback powerStateCb){ mPowerStateCb = powerStateCb; }
+    bool getPowerState() { return mPowerOn; }
+    void setAllowFlpNetworkFixes(uint32_t allow) { mAllowFlpNetworkFixes = allow; }
+    uint32_t getAllowFlpNetworkFixes() { return mAllowFlpNetworkFixes; }
+    void setSuplHostServer(const char* server, int port, LocServerType type);
+    void notifyClientOfCachedLocationSystemInfo(LocationAPI* client,
+                                                const LocationCallbacks& callbacks);
 };
 
 #endif //GNSS_ADAPTER_H
diff --git a/gnss/XtraSystemStatusObserver.cpp b/gnss/XtraSystemStatusObserver.cpp
index 6df5480..6e1902c 100644
--- a/gnss/XtraSystemStatusObserver.cpp
+++ b/gnss/XtraSystemStatusObserver.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017, 2019, 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
@@ -56,7 +56,7 @@ using namespace loc_core;
 #endif
 #define LOG_TAG "LocSvc_XSSO"
 
-bool XtraSystemStatusObserver::updateLockStatus(uint32_t lock) {
+bool XtraSystemStatusObserver::updateLockStatus(GnssConfigGpsLock lock) {
     mGpsLock = lock;
 
     if (!mReqStatusReceived) {
@@ -69,17 +69,21 @@ bool XtraSystemStatusObserver::updateLockStatus(uint32_t lock) {
     return ( send(LOC_IPC_XTRA, ss.str()) );
 }
 
-bool XtraSystemStatusObserver::updateConnections(uint64_t allConnections) {
+bool XtraSystemStatusObserver::updateConnections(uint64_t allConnections,
+        uint64_t wifiNetworkHandle, uint64_t mobileNetworkHandle) {
     mIsConnectivityStatusKnown = true;
     mConnections = allConnections;
+    mWifiNetworkHandle = wifiNetworkHandle;
+    mMobileNetworkHandle = mobileNetworkHandle;
 
     if (!mReqStatusReceived) {
         return true;
     }
 
     stringstream ss;
-    ss <<  "connection";
-    ss << " " << mConnections;
+    ss << "connection" << endl << mConnections << endl << wifiNetworkHandle
+            << endl << mobileNetworkHandle;
+
     return ( send(LOC_IPC_XTRA, ss.str()) );
 }
 
@@ -134,6 +138,7 @@ inline bool XtraSystemStatusObserver::onStatusRequested(int32_t xtraStatusUpdate
     ss << "respondStatus" << endl;
     (mGpsLock == -1 ? ss : ss << mGpsLock) << endl;
     (mConnections == (uint64_t)~0 ? ss : ss << mConnections) << endl
+            << mWifiNetworkHandle << endl << mMobileNetworkHandle << endl
             << mTac << endl << mMccmnc << endl << mIsConnectivityStatusKnown;
 
     return ( send(LOC_IPC_XTRA, ss.str()) );
@@ -219,8 +224,11 @@ void XtraSystemStatusObserver::notify(const list<IDataItemCore*>& dlist)
         }
 
         inline ~HandleOsObserverUpdateMsg() {
-            for (auto each : mDataItemList) {
-                delete each;
+            for (auto itor = mDataItemList.begin(); itor != mDataItemList.end(); ++itor) {
+                if (*itor != nullptr) {
+                    delete *itor;
+                    *itor = nullptr;
+                }
             }
         }
 
@@ -232,7 +240,11 @@ void XtraSystemStatusObserver::notify(const list<IDataItemCore*>& dlist)
                     {
                         NetworkInfoDataItemBase* networkInfo =
                                 static_cast<NetworkInfoDataItemBase*>(each);
-                        mXtraSysStatObj->updateConnections(networkInfo->getAllTypes());
+                        mXtraSysStatObj->updateConnections(networkInfo->getAllTypes(),
+                                (NetworkHandle) networkInfo->getNetworkHandle(
+                                        loc_core::NetworkInfoDataItemBase::TYPE_WIFI),
+                                (NetworkHandle) networkInfo->getNetworkHandle(
+                                        loc_core::NetworkInfoDataItemBase::TYPE_MOBILE));
                     }
                     break;
 
diff --git a/gnss/XtraSystemStatusObserver.h b/gnss/XtraSystemStatusObserver.h
index b49a0bc..b93ecf2 100644
--- a/gnss/XtraSystemStatusObserver.h
+++ b/gnss/XtraSystemStatusObserver.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -46,7 +46,7 @@ public :
     inline XtraSystemStatusObserver(IOsObserver* sysStatObs, const MsgTask* msgTask):
             mSystemStatusObsrvr(sysStatObs), mMsgTask(msgTask),
             mGpsLock(-1), mConnections(~0), mXtraThrottle(true), mReqStatusReceived(false),
-            mDelayLocTimer(*this), mIsConnectivityStatusKnown (false) {
+            mIsConnectivityStatusKnown (false), mDelayLocTimer(*this) {
         subscribe(true);
         startListeningNonBlocking(LOC_IPC_HAL);
         mDelayLocTimer.start(100 /*.1 sec*/,  false);
@@ -60,8 +60,9 @@ public :
     inline virtual void getName(string& name);
     virtual void notify(const list<IDataItemCore*>& dlist);
 
-    bool updateLockStatus(uint32_t lock);
-    bool updateConnections(uint64_t allConnections);
+    bool updateLockStatus(GnssConfigGpsLock lock);
+    bool updateConnections(uint64_t allConnections,
+            uint64_t wifiNetworkHandle, uint64_t mobileNetworkHandle);
     bool updateTac(const string& tac);
     bool updateMccMnc(const string& mccmnc);
     bool updateXtraThrottle(const bool enabled);
@@ -74,8 +75,10 @@ protected:
 private:
     IOsObserver*    mSystemStatusObsrvr;
     const MsgTask* mMsgTask;
-    int32_t mGpsLock;
+    GnssConfigGpsLock mGpsLock;
     uint64_t mConnections;
+    uint64_t mWifiNetworkHandle;
+    uint64_t mMobileNetworkHandle;
     string mTac;
     string mMccmnc;
     bool mXtraThrottle;
diff --git a/gnss/location_gnss.cpp b/gnss/location_gnss.cpp
index f9fbddc..43665b4 100644
--- a/gnss/location_gnss.cpp
+++ b/gnss/location_gnss.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019, 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
@@ -65,8 +65,12 @@ static void agpsDataConnOpen(AGpsExtType agpsType, const char* apnName, int apnL
 static void agpsDataConnClosed(AGpsExtType agpsType);
 static void agpsDataConnFailed(AGpsExtType agpsType);
 static void getDebugReport(GnssDebugReport& report);
-static void updateConnectionStatus(bool connected, int8_t type);
+static void updateConnectionStatus(bool connected, int8_t type, bool roaming = false,
+                                   NetworkHandle networkHandle = NETWORK_HANDLE_UNKNOWN);
 static void getGnssEnergyConsumed(GnssEnergyConsumedCallback energyConsumedCb);
+static void enableNfwLocationAccess(bool enable);
+static void nfwInit(const NfwCbInfo& cbInfo);
+static void getPowerStateChanges(void* powerStateCb);
 
 static void odcpiInit(const OdcpiRequestCallback& callback);
 static void odcpiInject(const Location& location);
@@ -106,7 +110,10 @@ static const GnssInterface gGnssInterface = {
     odcpiInit,
     odcpiInject,
     blockCPI,
-    getGnssEnergyConsumed
+    getGnssEnergyConsumed,
+    enableNfwLocationAccess,
+    nfwInit,
+    getPowerStateChanges
 };
 
 #ifndef DEBUG_X86
@@ -313,9 +320,11 @@ static void getDebugReport(GnssDebugReport& report) {
     }
 }
 
-static void updateConnectionStatus(bool connected, int8_t type) {
+static void updateConnectionStatus(bool connected, int8_t type,
+                                   bool roaming, NetworkHandle networkHandle) {
     if (NULL != gGnssAdapter) {
-        gGnssAdapter->getSystemStatus()->eventConnectionStatus(connected, type);
+        gGnssAdapter->getSystemStatus()->eventConnectionStatus(
+                connected, type, roaming, networkHandle);
     }
 }
 
@@ -346,3 +355,21 @@ static void getGnssEnergyConsumed(GnssEnergyConsumedCallback energyConsumedCb) {
         gGnssAdapter->getGnssEnergyConsumedCommand(energyConsumedCb);
     }
 }
+
+static void enableNfwLocationAccess(bool enable) {
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->nfwControlCommand(enable);
+    }
+}
+
+static void nfwInit(const NfwCbInfo& cbInfo) {
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->initNfwCommand(cbInfo);
+    }
+}
+static void getPowerStateChanges(void* powerStateCb)
+{
+    if (NULL != gGnssAdapter) {
+        gGnssAdapter->getPowerStateChangesCommand(powerStateCb);
+    }
+}
diff --git a/gps_vendor_board.mk b/gps_vendor_board.mk
new file mode 100644
index 0000000..be346dc
--- /dev/null
+++ b/gps_vendor_board.mk
@@ -0,0 +1,3 @@
+# Flags from BoardConfigVendor.mk
+BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE := default
+
diff --git a/gps_vendor_product.mk b/gps_vendor_product.mk
index cfe2b90..6e938b3 100644
--- a/gps_vendor_product.mk
+++ b/gps_vendor_product.mk
@@ -3,8 +3,12 @@ PRODUCT_PACKAGES += android.hardware.gnss@1.0-impl-qti
 PRODUCT_PACKAGES += android.hardware.gnss@1.0-service-qti
 PRODUCT_PACKAGES += android.hardware.gnss@1.1-impl-qti
 PRODUCT_PACKAGES += android.hardware.gnss@1.1-service-qti
+PRODUCT_PACKAGES += android.hardware.gnss@2.0-impl-qti
+PRODUCT_PACKAGES += android.hardware.gnss@2.0-service-qti
 PRODUCT_PACKAGES += gps.conf
 PRODUCT_PACKAGES += libloc_core
 PRODUCT_PACKAGES += libgnss
 PRODUCT_PACKAGES += liblocation_api
 PRODUCT_PACKAGES += libgps.utils
+PRODUCT_PACKAGES += libbatching
+PRODUCT_PACKAGES += libgeofencing
diff --git a/location/LocationAPI.cpp b/location/LocationAPI.cpp
index 4d859b3..a43178d 100644
--- a/location/LocationAPI.cpp
+++ b/location/LocationAPI.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019 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
@@ -34,15 +34,11 @@
 #include <log_util.h>
 #include <pthread.h>
 #include <map>
+#include <loc_misc_utils.h>
 
-typedef void* (getLocationInterface)();
-
-typedef uint16_t LocationAdapterTypeMask;
-typedef enum {
-    LOCATION_ADAPTER_GNSS_TYPE_BIT      = (1<<0), // adapter type is GNSS
-    LOCATION_ADAPTER_FLP_TYPE_BIT       = (1<<1), // adapter type is FLP
-    LOCATION_ADAPTER_GEOFENCE_TYPE_BIT  = (1<<2)  // adapter type is geo fence
-} LocationAdapterTypeBits;
+typedef const GnssInterface* (getGnssInterface)();
+typedef const GeofenceInterface* (getGeofenceInterface)();
+typedef const BatchingInterface* (getBatchingInterface)();
 
 typedef struct {
     // bit mask of the adpaters that we need to wait for the removeClientCompleteCallback
@@ -64,22 +60,24 @@ typedef struct {
     LocationControlCallbacks controlCallbacks;
     GnssInterface* gnssInterface;
     GeofenceInterface* geofenceInterface;
-    FlpInterface* flpInterface;
+    BatchingInterface* batchingInterface;
 } LocationAPIData;
 
 static LocationAPIData gData = {};
 static pthread_mutex_t gDataMutex = PTHREAD_MUTEX_INITIALIZER;
 static bool gGnssLoadFailed = false;
-static bool gFlpLoadFailed = false;
+static bool gBatchingLoadFailed = false;
 static bool gGeofenceLoadFailed = false;
 
-static bool needsGnssTrackingInfo(LocationCallbacks& locationCallbacks)
-{
-    return (locationCallbacks.gnssLocationInfoCb != nullptr ||
-            locationCallbacks.gnssSvCb != nullptr ||
-            locationCallbacks.gnssNmeaCb != nullptr ||
-            locationCallbacks.gnssDataCb != nullptr ||
-            locationCallbacks.gnssMeasurementsCb != nullptr);
+template <typename T1, typename T2>
+static const T1* loadLocationInterface(const char* library, const char* name) {
+    void* libhandle = nullptr;
+    T2* getter = (T2*)dlGetSymFromLib(libhandle, library, name);
+    if (nullptr == getter) {
+        return (const T1*) getter;
+    }else {
+        return (*getter)();
+    }
 }
 
 static bool isGnssClient(LocationCallbacks& locationCallbacks)
@@ -90,10 +88,9 @@ static bool isGnssClient(LocationCallbacks& locationCallbacks)
             locationCallbacks.gnssMeasurementsCb != nullptr);
 }
 
-static bool isFlpClient(LocationCallbacks& locationCallbacks)
+static bool isBatchingClient(LocationCallbacks& locationCallbacks)
 {
-    return (locationCallbacks.trackingCb != nullptr ||
-            locationCallbacks.batchingCb != nullptr);
+    return (locationCallbacks.batchingCb != nullptr);
 }
 
 static bool isGeofenceClient(LocationCallbacks& locationCallbacks)
@@ -102,41 +99,14 @@ static bool isGeofenceClient(LocationCallbacks& locationCallbacks)
             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)();
-    }
-}
-
-void onRemoveClientCompleteCb (
-    LocationAPI* client, LocationAdapterTypeMask adapterType)
+void LocationAPI::onRemoveClientCompleteCb (LocationAdapterTypeMask adapterType)
 {
     bool invokeCallback = false;
     locationApiDestroyCompleteCallback destroyCompleteCb;
     LOC_LOGd("adatper type %x", adapterType);
     pthread_mutex_lock(&gDataMutex);
-    auto it = gData.destroyClientData.find(client);
+    auto it = gData.destroyClientData.find(this);
     if (it != gData.destroyClientData.end()) {
         it->second.waitAdapterMask &= ~adapterType;
         if (it->second.waitAdapterMask == 0) {
@@ -151,22 +121,24 @@ void onRemoveClientCompleteCb (
         LOC_LOGd("invoke client destroy cb");
         (destroyCompleteCb) ();
         LOC_LOGd("finish invoke client destroy cb");
+
+        delete this;
     }
 }
 
 void onGnssRemoveClientCompleteCb (LocationAPI* client)
 {
-    onRemoveClientCompleteCb (client, LOCATION_ADAPTER_GNSS_TYPE_BIT);
+    client->onRemoveClientCompleteCb (LOCATION_ADAPTER_GNSS_TYPE_BIT);
 }
 
-void onFlpRemoveClientCompleteCb (LocationAPI* client)
+void onBatchingRemoveClientCompleteCb (LocationAPI* client)
 {
-    onRemoveClientCompleteCb (client, LOCATION_ADAPTER_FLP_TYPE_BIT);
+    client->onRemoveClientCompleteCb (LOCATION_ADAPTER_BATCHING_TYPE_BIT);
 }
 
 void onGeofenceRemoveClientCompleteCb (LocationAPI* client)
 {
-    onRemoveClientCompleteCb (client, LOCATION_ADAPTER_GEOFENCE_TYPE_BIT);
+    client->onRemoveClientCompleteCb (LOCATION_ADAPTER_GEOFENCE_TYPE_BIT);
 }
 
 LocationAPI*
@@ -186,7 +158,8 @@ LocationAPI::createInstance(LocationCallbacks& locationCallbacks)
     if (isGnssClient(locationCallbacks)) {
         if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
             gData.gnssInterface =
-                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+                (GnssInterface*)loadLocationInterface<GnssInterface,
+                    getGnssInterface>("libgnss.so", "getGnssInterface");
             if (NULL == gData.gnssInterface) {
                 gGnssLoadFailed = true;
                 LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
@@ -203,21 +176,22 @@ LocationAPI::createInstance(LocationCallbacks& 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__);
+    if (isBatchingClient(locationCallbacks)) {
+        if (NULL == gData.batchingInterface && !gBatchingLoadFailed) {
+            gData.batchingInterface =
+                (BatchingInterface*)loadLocationInterface<BatchingInterface,
+                 getBatchingInterface>("libbatching.so", "getBatchingInterface");
+            if (NULL == gData.batchingInterface) {
+                gBatchingLoadFailed = true;
+                LOC_LOGW("%s:%d]: No batching interface available", __func__, __LINE__);
             } else {
-                gData.flpInterface->initialize();
+                gData.batchingInterface->initialize();
             }
         }
-        if (NULL != gData.flpInterface) {
-            gData.flpInterface->addClient(newLocationAPI, locationCallbacks);
+        if (NULL != gData.batchingInterface) {
+            gData.batchingInterface->addClient(newLocationAPI, locationCallbacks);
             if (!requestedCapabilities) {
-                gData.flpInterface->requestCapabilities(newLocationAPI);
+                gData.batchingInterface->requestCapabilities(newLocationAPI);
                 requestedCapabilities = true;
             }
         }
@@ -226,7 +200,8 @@ LocationAPI::createInstance(LocationCallbacks& locationCallbacks)
     if (isGeofenceClient(locationCallbacks)) {
         if (NULL == gData.geofenceInterface && !gGeofenceLoadFailed) {
             gData.geofenceInterface =
-                (GeofenceInterface*)loadLocationInterface("libgeofence.so", "getGeofenceInterface");
+               (GeofenceInterface*)loadLocationInterface<GeofenceInterface,
+               getGeofenceInterface>("libgeofencing.so", "getGeofenceInterface");
             if (NULL == gData.geofenceInterface) {
                 gGeofenceLoadFailed = true;
                 LOC_LOGW("%s:%d]: No geofence interface available", __func__, __LINE__);
@@ -260,13 +235,14 @@ LocationAPI::destroy(locationApiDestroyCompleteCallback destroyCompleteCb)
     if (it != gData.clientData.end()) {
         bool removeFromGnssInf =
                 (isGnssClient(it->second) && NULL != gData.gnssInterface);
-        bool removeFromFlpInf =
-                (isFlpClient(it->second) && NULL != gData.flpInterface);
+        bool removeFromBatchingInf =
+                (isBatchingClient(it->second) && NULL != gData.batchingInterface);
         bool removeFromGeofenceInf =
                 (isGeofenceClient(it->second) && NULL != gData.geofenceInterface);
-        bool needToWait = (removeFromGnssInf || removeFromFlpInf || removeFromGeofenceInf);
-        LOC_LOGe("removeFromGnssInf: %d, removeFromFlpInf: %d, removeFromGeofenceInf: %d, need %d",
-                 removeFromGnssInf, removeFromFlpInf, removeFromGeofenceInf, needToWait);
+        bool needToWait = (removeFromGnssInf || removeFromBatchingInf || removeFromGeofenceInf);
+        LOC_LOGe("removeFromGnssInf: %d, removeFromBatchingInf: %d, removeFromGeofenceInf: %d,"
+                 "need %d", removeFromGnssInf, removeFromBatchingInf, removeFromGeofenceInf,
+                 needToWait);
 
         if ((NULL != destroyCompleteCb) && (true == needToWait)) {
             LocationAPIDestroyCbData destroyCbData = {};
@@ -277,7 +253,7 @@ LocationAPI::destroy(locationApiDestroyCompleteCallback destroyCompleteCb)
             destroyCbData.waitAdapterMask =
                     (removeFromGnssInf ? LOCATION_ADAPTER_GNSS_TYPE_BIT : 0);
             destroyCbData.waitAdapterMask |=
-                    (removeFromFlpInf ? LOCATION_ADAPTER_FLP_TYPE_BIT : 0);
+                    (removeFromBatchingInf ? LOCATION_ADAPTER_BATCHING_TYPE_BIT : 0);
             destroyCbData.waitAdapterMask |=
                     (removeFromGeofenceInf ? LOCATION_ADAPTER_GEOFENCE_TYPE_BIT : 0);
             gData.destroyClientData[this] = destroyCbData;
@@ -288,9 +264,9 @@ LocationAPI::destroy(locationApiDestroyCompleteCallback destroyCompleteCb)
             gData.gnssInterface->removeClient(it->first,
                                               onGnssRemoveClientCompleteCb);
         }
-        if (removeFromFlpInf) {
-            gData.flpInterface->removeClient(it->first,
-                                             onFlpRemoveClientCompleteCb);
+        if (removeFromBatchingInf) {
+            gData.batchingInterface->removeClient(it->first,
+                                             onBatchingRemoveClientCompleteCb);
         }
         if (removeFromGeofenceInf) {
             gData.geofenceInterface->removeClient(it->first,
@@ -310,6 +286,7 @@ LocationAPI::destroy(locationApiDestroyCompleteCallback destroyCompleteCb)
     pthread_mutex_unlock(&gDataMutex);
     if (invokeDestroyCb == true) {
         (destroyCompleteCb) ();
+        delete this;
     }
 }
 
@@ -321,6 +298,7 @@ LocationAPI::LocationAPI()
 // private destructor
 LocationAPI::~LocationAPI()
 {
+    LOC_LOGD("LOCATION API DESTRUCTOR");
 }
 
 void
@@ -337,7 +315,8 @@ LocationAPI::updateCallbacks(LocationCallbacks& locationCallbacks)
     if (isGnssClient(locationCallbacks)) {
         if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
             gData.gnssInterface =
-                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+                (GnssInterface*)loadLocationInterface<GnssInterface,
+                    getGnssInterface>("libgnss.so", "getGnssInterface");
             if (NULL == gData.gnssInterface) {
                 gGnssLoadFailed = true;
                 LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
@@ -351,27 +330,29 @@ LocationAPI::updateCallbacks(LocationCallbacks& 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__);
+    if (isBatchingClient(locationCallbacks)) {
+        if (NULL == gData.batchingInterface && !gBatchingLoadFailed) {
+            gData.batchingInterface =
+                (BatchingInterface*)loadLocationInterface<BatchingInterface,
+                 getBatchingInterface>("libbatching.so", "getBatchingInterface");
+            if (NULL == gData.batchingInterface) {
+                gBatchingLoadFailed = true;
+                LOC_LOGW("%s:%d]: No batching interface available", __func__, __LINE__);
             } else {
-                gData.flpInterface->initialize();
+                gData.batchingInterface->initialize();
             }
         }
-        if (NULL != gData.flpInterface) {
+        if (NULL != gData.batchingInterface) {
             // either adds new Client or updates existing Client
-            gData.flpInterface->addClient(this, locationCallbacks);
+            gData.batchingInterface->addClient(this, locationCallbacks);
         }
     }
 
     if (isGeofenceClient(locationCallbacks)) {
         if (NULL == gData.geofenceInterface && !gGeofenceLoadFailed) {
             gData.geofenceInterface =
-                (GeofenceInterface*)loadLocationInterface("libgeofence.so", "getGeofenceInterface");
+                (GeofenceInterface*)loadLocationInterface<GeofenceInterface,
+                 getGeofenceInterface>("libgeofencing.so", "getGeofenceInterface");
             if (NULL == gData.geofenceInterface) {
                 gGeofenceLoadFailed = true;
                 LOC_LOGW("%s:%d]: No geofence interface available", __func__, __LINE__);
@@ -398,16 +379,10 @@ LocationAPI::startTracking(TrackingOptions& trackingOptions)
 
     auto it = gData.clientData.find(this);
     if (it != gData.clientData.end()) {
-        if (NULL != gData.flpInterface && trackingOptions.minDistance > 0) {
-            id = gData.flpInterface->startTracking(this, trackingOptions);
-        } else if (NULL != gData.gnssInterface && needsGnssTrackingInfo(it->second)) {
-            id = gData.gnssInterface->startTracking(this, trackingOptions);
-        } else if (NULL != gData.flpInterface) {
-            id = gData.flpInterface->startTracking(this, trackingOptions);
-        } else if (NULL != gData.gnssInterface) {
+        if (NULL != gData.gnssInterface) {
             id = gData.gnssInterface->startTracking(this, trackingOptions);
         } else {
-            LOC_LOGE("%s:%d]: No gnss/flp interface available for Location API client %p ",
+            LOC_LOGE("%s:%d]: No gnss interface available for Location API client %p ",
                      __func__, __LINE__, this);
         }
     } else {
@@ -426,16 +401,10 @@ LocationAPI::stopTracking(uint32_t id)
 
     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 ",
+        } else {
+            LOC_LOGE("%s:%d]: No gnss interface available for Location API client %p ",
                      __func__, __LINE__, this);
         }
     } else {
@@ -454,16 +423,10 @@ LocationAPI::updateTrackingOptions(
 
     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, trackingOptions);
-        }
-        if (gData.flpInterface != NULL) {
-            gData.flpInterface->updateTrackingOptions(this, id, trackingOptions);
-        }
-        if (gData.flpInterface == NULL && gData.gnssInterface == NULL) {
-            LOC_LOGE("%s:%d]: No gnss/flp interface available for Location API client %p ",
+        } else {
+            LOC_LOGE("%s:%d]: No gnss interface available for Location API client %p ",
                      __func__, __LINE__, this);
         }
     } else {
@@ -480,10 +443,10 @@ LocationAPI::startBatching(BatchingOptions &batchingOptions)
     uint32_t id = 0;
     pthread_mutex_lock(&gDataMutex);
 
-    if (NULL != gData.flpInterface) {
-        id = gData.flpInterface->startBatching(this, batchingOptions);
+    if (NULL != gData.batchingInterface) {
+        id = gData.batchingInterface->startBatching(this, batchingOptions);
     } else {
-        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+        LOC_LOGE("%s:%d]: No batching interface available for Location API client %p ",
                  __func__, __LINE__, this);
     }
 
@@ -496,10 +459,10 @@ LocationAPI::stopBatching(uint32_t id)
 {
     pthread_mutex_lock(&gDataMutex);
 
-    if (NULL != gData.flpInterface) {
-        gData.flpInterface->stopBatching(this, id);
+    if (NULL != gData.batchingInterface) {
+        gData.batchingInterface->stopBatching(this, id);
     } else {
-        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+        LOC_LOGE("%s:%d]: No batching interface available for Location API client %p ",
                  __func__, __LINE__, this);
     }
 
@@ -511,10 +474,10 @@ LocationAPI::updateBatchingOptions(uint32_t id, BatchingOptions& batchOptions)
 {
     pthread_mutex_lock(&gDataMutex);
 
-    if (NULL != gData.flpInterface) {
-        gData.flpInterface->updateBatchingOptions(this, id, batchOptions);
+    if (NULL != gData.batchingInterface) {
+        gData.batchingInterface->updateBatchingOptions(this, id, batchOptions);
     } else {
-        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+        LOC_LOGE("%s:%d]: No batching interface available for Location API client %p ",
                  __func__, __LINE__, this);
     }
 
@@ -526,10 +489,10 @@ LocationAPI::getBatchedLocations(uint32_t id, size_t count)
 {
     pthread_mutex_lock(&gDataMutex);
 
-    if (gData.flpInterface != NULL) {
-        gData.flpInterface->getBatchedLocations(this, id, count);
+    if (gData.batchingInterface != NULL) {
+        gData.batchingInterface->getBatchedLocations(this, id, count);
     } else {
-        LOC_LOGE("%s:%d]: No flp interface available for Location API client %p ",
+        LOC_LOGE("%s:%d]: No batching interface available for Location API client %p ",
                  __func__, __LINE__, this);
     }
 
@@ -637,7 +600,8 @@ LocationControlAPI::createInstance(LocationControlCallbacks& locationControlCall
     if (nullptr != locationControlCallbacks.responseCb && NULL == gData.controlAPI) {
         if (NULL == gData.gnssInterface && !gGnssLoadFailed) {
             gData.gnssInterface =
-                (GnssInterface*)loadLocationInterface("libgnss.so", "getGnssInterface");
+                (GnssInterface*)loadLocationInterface<GnssInterface,
+                    getGnssInterface>("libgnss.so", "getGnssInterface");
             if (NULL == gData.gnssInterface) {
                 gGnssLoadFailed = true;
                 LOC_LOGW("%s:%d]: No gnss interface available", __func__, __LINE__);
diff --git a/location/LocationAPI.h b/location/LocationAPI.h
index c270ef4..6f5987c 100644
--- a/location/LocationAPI.h
+++ b/location/LocationAPI.h
@@ -52,6 +52,8 @@ public:
     */
     void destroy(locationApiDestroyCompleteCallback destroyCompleteCb=nullptr);
 
+    void onRemoveClientCompleteCb (LocationAdapterTypeMask adapterType);
+
     /* updates/changes the callbacks that will be called.
         mandatory callbacks must be present for callbacks to be successfully updated
         no return value */
diff --git a/location/LocationAPIClientBase.h b/location/LocationAPIClientBase.h
index da87535..fddae60 100644
--- a/location/LocationAPIClientBase.h
+++ b/location/LocationAPIClientBase.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019 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
diff --git a/location/LocationDataTypes.h b/location/LocationDataTypes.h
index 61598be..f8bb6cb 100644
--- a/location/LocationDataTypes.h
+++ b/location/LocationDataTypes.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2018-2019 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
@@ -38,7 +38,7 @@
 #define GNSS_NI_REQUESTOR_MAX  (256)
 #define GNSS_NI_MESSAGE_ID_MAX (2048)
 #define GNSS_SV_MAX            (176)
-#define GNSS_MEASUREMENTS_MAX  (64)
+#define GNSS_MEASUREMENTS_MAX  (128)
 #define GNSS_UTC_TIME_OFFSET   (3657)
 
 #define GNSS_BUGREPORT_GPS_MIN  (1)
@@ -48,6 +48,8 @@
 #define GNSS_BUGREPORT_BDS_MIN  (1)
 #define GNSS_BUGREPORT_GAL_MIN  (1)
 
+#define GNSS_MAX_NAME_LENGTH    (8)
+
 typedef enum {
     LOCATION_ERROR_SUCCESS = 0,
     LOCATION_ERROR_GENERAL_FAILURE,
@@ -223,12 +225,13 @@ typedef enum {
 } LocationTechnologyType;
 
 // Configures how GPS is locked when GPS is disabled (through GnssDisable)
-typedef enum {
+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;
+};
+typedef int32_t GnssConfigGpsLock;
 
 // SUPL version
 typedef enum {
@@ -303,6 +306,7 @@ typedef enum {
     GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT                 = (1<<8),
     GNSS_CONFIG_FLAGS_SUPL_MODE_BIT                        = (1<<9),
     GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT               = (1<<10),
+    GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT      = (1<<11),
 } GnssConfigFlagsBits;
 
 typedef enum {
@@ -374,6 +378,8 @@ typedef enum {
 typedef enum {
     GNSS_ASSISTANCE_TYPE_SUPL = 0,
     GNSS_ASSISTANCE_TYPE_C2K,
+    GNSS_ASSISTANCE_TYPE_SUPL_EIMS,
+    GNSS_ASSISTANCE_TYPE_SUPL_IMS,
 } GnssAssistanceType;
 
 typedef enum {
@@ -396,12 +402,31 @@ typedef enum {
 
 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),
+    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),
+    GNSS_MEASUREMENTS_ACCUMULATED_DELTA_RANGE_STATE_HALF_CYCLE_RESOLVED_BIT = (1<<3),
 } GnssMeasurementsAdrStateBits;
 
+typedef enum {
+    GNSS_MEASUREMENTS_CODE_TYPE_A       = 0,
+    GNSS_MEASUREMENTS_CODE_TYPE_B       = 1,
+    GNSS_MEASUREMENTS_CODE_TYPE_C       = 2,
+    GNSS_MEASUREMENTS_CODE_TYPE_I       = 3,
+    GNSS_MEASUREMENTS_CODE_TYPE_L       = 4,
+    GNSS_MEASUREMENTS_CODE_TYPE_M       = 5,
+    GNSS_MEASUREMENTS_CODE_TYPE_P       = 6,
+    GNSS_MEASUREMENTS_CODE_TYPE_Q       = 7,
+    GNSS_MEASUREMENTS_CODE_TYPE_S       = 8,
+    GNSS_MEASUREMENTS_CODE_TYPE_W       = 9,
+    GNSS_MEASUREMENTS_CODE_TYPE_X       = 10,
+    GNSS_MEASUREMENTS_CODE_TYPE_Y       = 11,
+    GNSS_MEASUREMENTS_CODE_TYPE_Z       = 12,
+    GNSS_MEASUREMENTS_CODE_TYPE_N       = 13,
+    GNSS_MEASUREMENTS_CODE_TYPE_OTHER   = 255,
+} GnssMeasurementsCodeType;
+
 typedef uint32_t GnssMeasurementsDataFlagsMask;
 typedef enum {
     GNSS_MEASUREMENTS_DATA_SV_ID_BIT                        = (1<<0),
@@ -441,6 +466,9 @@ typedef enum {
     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),
+    GNSS_MEASUREMENTS_STATE_TOW_KNOWN_BIT             = (1<<14),
+    GNSS_MEASUREMENTS_STATE_GLO_TOD_KNOWN_BIT         = (1<<15),
+    GNSS_MEASUREMENTS_STATE_2ND_CODE_LOCK_BIT         = (1<<16),
 } GnssMeasurementsStateBits;
 
 typedef enum {
@@ -488,6 +516,22 @@ typedef enum {
     GNSS_AIDING_DATA_SV_TYPE_GALILEO_BIT  = (1<<4),
 } GnssAidingDataSvTypeBits;
 
+/* Gnss constellation type mask */
+typedef uint16_t GnssConstellationTypeMask;
+typedef enum {
+    GNSS_CONSTELLATION_TYPE_GPS_BIT      = (1<<0),
+    GNSS_CONSTELLATION_TYPE_GLONASS_BIT  = (1<<1),
+    GNSS_CONSTELLATION_TYPE_QZSS_BIT     = (1<<2),
+    GNSS_CONSTELLATION_TYPE_BEIDOU_BIT   = (1<<3),
+    GNSS_CONSTELLATION_TYPE_GALILEO_BIT  = (1<<4),
+    GNSS_CONSTELLATION_TYPE_SBAS_BIT     = (1<<5)
+} GnssConstellationTypeBits;
+
+#define GNSS_CONSTELLATION_TYPE_MASK_ALL\
+        (GNSS_CONSTELLATION_TYPE_GPS_BIT     | GNSS_CONSTELLATION_TYPE_GLONASS_BIT |\
+         GNSS_CONSTELLATION_TYPE_QZSS_BIT    | GNSS_CONSTELLATION_TYPE_BEIDOU_BIT  |\
+         GNSS_CONSTELLATION_TYPE_GALILEO_BIT | GNSS_CONSTELLATION_TYPE_SBAS_BIT)
+
 /** GNSS Signal Type and RF Band */
 typedef uint32_t GnssSignalTypeMask;
 typedef enum {
@@ -529,21 +573,29 @@ typedef enum {
     GNSS_SIGNAL_SBAS_L1             = (1<<17)
 } GnssSignalTypeBits;
 
+#define GNSS_SIGNAL_TYPE_MASK_ALL\
+    (GNSS_SIGNAL_GPS_L1CA | GNSS_SIGNAL_GPS_L1C | GNSS_SIGNAL_GPS_L2 |\
+     GNSS_SIGNAL_GPS_L5| GNSS_SIGNAL_GLONASS_G1 | GNSS_SIGNAL_GLONASS_G2 |\
+     GNSS_SIGNAL_GALILEO_E1 | GNSS_SIGNAL_GALILEO_E5A | GNSS_SIGNAL_GALILEO_E5B |\
+     GNSS_SIGNAL_BEIDOU_B1I | GNSS_SIGNAL_BEIDOU_B1C | GNSS_SIGNAL_BEIDOU_B2I|\
+     GNSS_SIGNAL_BEIDOU_B2AI | GNSS_SIGNAL_QZSS_L1CA | GNSS_SIGNAL_QZSS_L1S |\
+     GNSS_SIGNAL_QZSS_L2| GNSS_SIGNAL_QZSS_L5 | GNSS_SIGNAL_SBAS_L1)
+
 typedef enum
 {
+    GNSS_LOC_SV_SYSTEM_UNKNOWN                = 0,
+    /** unknown sv system. */
     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,
+    GNSS_LOC_SV_SYSTEM_GLONASS                = 4,
     /**< GLONASS satellite. */
-    GNSS_LOC_SV_SYSTEM_BDS                    = 6,
+    GNSS_LOC_SV_SYSTEM_BDS                    = 5,
     /**< BDS satellite. */
-    GNSS_LOC_SV_SYSTEM_QZSS                   = 7
+    GNSS_LOC_SV_SYSTEM_QZSS                   = 6
     /**< QZSS satellite. */
 } Gnss_LocSvSystemEnumType;
 
@@ -590,7 +642,7 @@ typedef enum {
 typedef uint32_t GnssGloTimeStructTypeFlags;
 typedef enum {
     GNSS_CLO_DAYS_VALID                     = (1 << 0),
-    GNSS_GLOS_MSEC_VALID                    = (1 << 1),
+    GNSS_GLO_MSEC_VALID                     = (1 << 1),
     GNSS_GLO_CLK_TIME_BIAS_VALID            = (1 << 2),
     GNSS_GLO_CLK_TIME_BIAS_UNC_VALID        = (1 << 3),
     GNSS_GLO_REF_FCOUNT_VALID               = (1 << 4),
@@ -624,7 +676,7 @@ typedef struct {
 } GnssAidingData;
 
 typedef struct {
-    size_t size;             // set to sizeof(Location)
+    uint32_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
@@ -641,7 +693,7 @@ typedef struct {
 } Location;
 
 struct LocationOptions {
-    size_t size;          // set to sizeof(LocationOptions)
+    uint32_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
@@ -668,7 +720,7 @@ struct TrackingOptions : LocationOptions {
 
     inline TrackingOptions() :
             LocationOptions(), powerMode(GNSS_POWER_MODE_INVALID), tbm(0) {}
-    inline TrackingOptions(size_t s, GnssPowerMode m, uint32_t t) :
+    inline TrackingOptions(uint32_t s, GnssPowerMode m, uint32_t t) :
             LocationOptions(), powerMode(m), tbm(t) { LocationOptions::size = s; }
     inline TrackingOptions(const LocationOptions& options) :
             LocationOptions(options), powerMode(GNSS_POWER_MODE_INVALID), tbm(0) {}
@@ -692,7 +744,7 @@ struct BatchingOptions : LocationOptions {
 
     inline BatchingOptions() :
             LocationOptions(), batchingMode(BATCHING_MODE_ROUTINE) {}
-    inline BatchingOptions(size_t s, BatchingMode m) :
+    inline BatchingOptions(uint32_t s, BatchingMode m) :
             LocationOptions(), batchingMode(m) { LocationOptions::size = s; }
     inline BatchingOptions(const LocationOptions& options) :
             LocationOptions(options), batchingMode(BATCHING_MODE_ROUTINE) {}
@@ -704,27 +756,27 @@ struct BatchingOptions : LocationOptions {
 };
 
 typedef struct {
-    size_t size;
+    uint32_t size;
     BatchingStatus batchingStatus;
 } BatchingStatusInfo;
 
 typedef struct {
-    size_t size;                            // set to sizeof(GeofenceOption)
+    uint32_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)
+    uint32_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 size;             // set to sizeof(GeofenceBreachNotification)
+    uint32_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
@@ -732,7 +784,7 @@ typedef struct {
 } GeofenceBreachNotification;
 
 typedef struct {
-    size_t size;                       // set to sizeof(GeofenceBreachNotification)
+    uint32_t size;                       // set to sizeof(GeofenceBreachNotification)
     GeofenceStatusAvailable available; // GEOFENCE_STATUS_AVAILABILE_NO/_YES
     LocationTechnologyType techType;   // GNSS
 } GeofenceStatusNotification;
@@ -866,7 +918,7 @@ typedef struct {
 } GnssSystemTime;
 
 typedef struct {
-    size_t size;                        // set to sizeof(GnssLocationInfo)
+    uint32_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
@@ -902,7 +954,7 @@ typedef struct {
 } GnssLocationInfoNotification;
 
 typedef struct {
-    size_t size;                           // set to sizeof(GnssNiNotification)
+    uint32_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
@@ -915,7 +967,7 @@ typedef struct {
 } GnssNiNotification;
 
 typedef struct {
-    size_t size;       // set to sizeof(GnssSv)
+    uint32_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
@@ -927,7 +979,7 @@ typedef struct {
 } GnssSv;
 
 struct GnssConfigSetAssistanceServer {
-    size_t size;             // set to sizeof(GnssConfigSetAssistanceServer)
+    uint32_t size;             // set to sizeof(GnssConfigSetAssistanceServer)
     GnssAssistanceType type; // SUPL or C2K
     const char* hostName;    // null terminated string
     uint32_t port;           // port of server
@@ -944,7 +996,7 @@ struct GnssConfigSetAssistanceServer {
 };
 
 typedef struct {
-    size_t size;                               // set to sizeof(GnssMeasurementsData)
+    uint32_t size;                               // set to sizeof(GnssMeasurementsData)
     GnssMeasurementsDataFlagsMask flags;       // bitwise OR of GnssMeasurementsDataFlagsBits
     int16_t svId;
     GnssSvType svType;
@@ -965,10 +1017,12 @@ typedef struct {
     GnssMeasurementsMultipathIndicator multipathIndicator;
     double signalToNoiseRatioDb;
     double agcLevelDb;
+    GnssMeasurementsCodeType codeType;
+    char otherCodeTypeName[GNSS_MAX_NAME_LENGTH];
 } GnssMeasurementsData;
 
 typedef struct {
-    size_t size;                          // set to sizeof(GnssMeasurementsClock)
+    uint32_t size;                          // set to sizeof(GnssMeasurementsClock)
     GnssMeasurementsClockFlagsMask flags; // bitwise OR of GnssMeasurementsClockFlagsBits
     int16_t leapSecond;
     int64_t timeNs;
@@ -982,29 +1036,29 @@ typedef struct {
 } GnssMeasurementsClock;
 
 typedef struct {
-    size_t size;                 // set to sizeof(GnssSvNotification)
-    size_t count;                // number of SVs in the GnssSv array
+    uint32_t size;                 // set to sizeof(GnssSvNotification)
+    uint32_t count;                // number of SVs in the GnssSv array
     bool gnssSignalTypeMaskValid;
     GnssSv gnssSvs[GNSS_SV_MAX]; // information on a number of SVs
 } GnssSvNotification;
 
 typedef struct {
-    size_t size;         // set to sizeof(GnssNmeaNotification)
+    uint32_t size;         // set to sizeof(GnssNmeaNotification)
     uint64_t timestamp;  // timestamp
     const char* nmea;    // nmea text
-    size_t length;       // length of the nmea text
+    uint32_t length;       // length of the nmea text
 } GnssNmeaNotification;
 
 typedef struct {
-    size_t size;                 // set to sizeof(GnssDataNotification)
+    uint32_t size;                 // set to sizeof(GnssDataNotification)
     GnssDataMask  gnssDataMask[GNSS_LOC_MAX_NUMBER_OF_SIGNAL_TYPES];  // bitwise OR of GnssDataBits
     double        jammerInd[GNSS_LOC_MAX_NUMBER_OF_SIGNAL_TYPES];     // Jammer Indication
     double        agc[GNSS_LOC_MAX_NUMBER_OF_SIGNAL_TYPES];           // Automatic gain control
 } GnssDataNotification;
 
 typedef struct {
-    size_t size;         // set to sizeof(GnssMeasurementsNotification)
-    size_t count;        // number of items in GnssMeasurements array
+    uint32_t size;         // set to sizeof(GnssMeasurementsNotification)
+    uint32_t count;        // number of items in GnssMeasurements array
     GnssMeasurementsData measurements[GNSS_MEASUREMENTS_MAX];
     GnssMeasurementsClock clock; // clock
 } GnssMeasurementsNotification;
@@ -1012,9 +1066,9 @@ typedef struct {
 typedef uint32_t GnssSvId;
 
 struct GnssSvIdSource{
-    size_t size;                 // set to sizeof(GnssSvIdSource)
-    GnssSvType constellation;    // constellation for the sv to blacklist
-    GnssSvId svId;           // sv id to blacklist
+    uint32_t size;              // set to sizeof(GnssSvIdSource)
+    GnssSvType constellation;   // constellation for the sv to blacklist
+    GnssSvId svId;             // sv id to blacklist
 };
 inline bool operator ==(GnssSvIdSource const& left, GnssSvIdSource const& right) {
     return left.size == right.size &&
@@ -1023,7 +1077,7 @@ inline bool operator ==(GnssSvIdSource const& left, GnssSvIdSource const& right)
 
 #define GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK ((uint64_t)0xFFFFFFFFFFFFFFFF)
 typedef struct {
-    size_t size; // set to sizeof(GnssSvIdConfig)
+    uint32_t size; // set to sizeof(GnssSvIdConfig)
 
     // GLONASS - SV 65 maps to bit 0
 #define GNSS_SV_CONFIG_GLO_INITIAL_SV_ID 65
@@ -1043,7 +1097,7 @@ typedef struct {
 } GnssSvIdConfig;
 
 struct GnssConfig{
-    size_t size;  // set to sizeof(GnssConfig)
+    uint32_t size;  // set to sizeof(GnssConfig)
     GnssConfigFlagsMask flags; // bitwise OR of GnssConfigFlagsBits to mark which params are valid
     GnssConfigGpsLock gpsLock;
     GnssConfigSuplVersion suplVersion;
@@ -1056,6 +1110,7 @@ struct GnssConfig{
     GnssConfigSuplEmergencyServices suplEmergencyServices;
     GnssConfigSuplModeMask suplModeMask; //bitwise OR of GnssConfigSuplModeBits
     std::vector<GnssSvIdSource> blacklistedSvIds;
+    uint32_t emergencyExtensionSeconds;
 
     inline bool equals(const GnssConfig& config) {
         if (flags == config.flags &&
@@ -1069,7 +1124,8 @@ struct GnssConfig{
                 emergencyPdnForEmergencySupl == config.emergencyPdnForEmergencySupl &&
                 suplEmergencyServices == config.suplEmergencyServices &&
                 suplModeMask == config.suplModeMask  &&
-                blacklistedSvIds == config.blacklistedSvIds) {
+                blacklistedSvIds == config.blacklistedSvIds &&
+                emergencyExtensionSeconds == config.emergencyExtensionSeconds) {
             return true;
         }
         return false;
@@ -1077,7 +1133,7 @@ struct GnssConfig{
 };
 
 typedef struct {
-    size_t size;                        // set to sizeof
+    uint32_t size;                        // set to sizeof
     bool                                mValid;
     Location                            mLocation;
     double                              verticalAccuracyMeters;
@@ -1087,7 +1143,7 @@ typedef struct {
 } GnssDebugLocation;
 
 typedef struct {
-    size_t size;                        // set to sizeof
+    uint32_t size;                        // set to sizeof
     bool                                mValid;
     int64_t                             timeEstimate;
     float                               timeUncertaintyNs;
@@ -1095,7 +1151,7 @@ typedef struct {
 } GnssDebugTime;
 
 typedef struct {
-    size_t size;                        // set to sizeof
+    uint32_t size;                        // set to sizeof
     uint32_t                            svid;
     GnssSvType                          constellation;
     GnssEphemerisType                   mEphemerisType;
@@ -1107,7 +1163,7 @@ typedef struct {
 } GnssDebugSatelliteInfo;
 
 typedef struct {
-    size_t size;                        // set to sizeof
+    uint32_t size;                        // set to sizeof
     GnssDebugLocation                   mLocation;
     GnssDebugTime                       mTime;
     std::vector<GnssDebugSatelliteInfo> mSatelliteInfo;
@@ -1182,7 +1238,7 @@ typedef std::function<void(
    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
+    uint32_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;
@@ -1198,7 +1254,7 @@ typedef std::function<void(
    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
+    uint32_t count,      // number of locations in array
     Location* location, // array of locations
     BatchingOptions batchingOptions // Batching options
 )> batchingCallback;
@@ -1277,8 +1333,15 @@ typedef std::function<void(
 typedef std::function<void(
 )> locationApiDestroyCompleteCallback;
 
+typedef uint16_t LocationAdapterTypeMask;
+typedef enum {
+    LOCATION_ADAPTER_GNSS_TYPE_BIT      = (1<<0), // adapter type is GNSS
+    LOCATION_ADAPTER_BATCHING_TYPE_BIT  = (1<<1), // adapter type is BATCHING
+    LOCATION_ADAPTER_GEOFENCE_TYPE_BIT  = (1<<2)  // adapter type is geo fence
+} LocationAdapterTypeBits;
+
 typedef struct {
-    size_t size; // set to sizeof(LocationCallbacks)
+    uint32_t size; // set to sizeof(LocationCallbacks)
     capabilitiesCallback capabilitiesCb;             // mandatory
     responseCallback responseCb;                     // mandatory
     collectiveResponseCallback collectiveResponseCb; // mandatory
diff --git a/location/location_interface.h b/location/location_interface.h
index 480bbdb..4235a13 100644
--- a/location/location_interface.h
+++ b/location/location_interface.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2017 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2017-2019 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
@@ -76,29 +76,29 @@ struct GnssInterface {
     void (*agpsDataConnClosed)(AGpsExtType agpsType);
     void (*agpsDataConnFailed)(AGpsExtType agpsType);
     void (*getDebugReport)(GnssDebugReport& report);
-    void (*updateConnectionStatus)(bool connected, int8_t type);
+    void (*updateConnectionStatus)(bool connected, int8_t type, bool roaming,
+                                   NetworkHandle networkHandle);
     void (*odcpiInit)(const OdcpiRequestCallback& callback);
     void (*odcpiInject)(const Location& location);
     void (*blockCPI)(double latitude, double longitude, float accuracy,
                      int blockDurationMsec, double latLonDiffThreshold);
     void (*getGnssEnergyConsumed)(GnssEnergyConsumedCallback energyConsumedCb);
+    void (*enableNfwLocationAccess)(bool enable);
+    void (*nfwInit)(const NfwCbInfo& cbInfo);
+    void (*getPowerStateChanges)(void* powerStateCb);
 };
 
-struct FlpInterface {
+struct BatchingInterface {
     size_t size;
     void (*initialize)(void);
     void (*deinitialize)(void);
     void (*addClient)(LocationAPI* client, const LocationCallbacks& callbacks);
     void (*removeClient)(LocationAPI* client, removeClientCompleteCallback rmClientCb);
     void (*requestCapabilities)(LocationAPI* client);
-    uint32_t (*startTracking)(LocationAPI* client, TrackingOptions&);
-    void (*updateTrackingOptions)(LocationAPI* client, uint32_t id, TrackingOptions&);
-    void (*stopTracking)(LocationAPI* client, uint32_t id);
     uint32_t (*startBatching)(LocationAPI* client, BatchingOptions&);
     void (*stopBatching)(LocationAPI* client, uint32_t id);
     void (*updateBatchingOptions)(LocationAPI* client, uint32_t id, BatchingOptions&);
     void (*getBatchedLocations)(LocationAPI* client, uint32_t id, size_t count);
-    void (*getPowerStateChanges)(void* powerStateCb);
 };
 
 struct GeofenceInterface {
diff --git a/pla/oe/loc_pla.h b/pla/oe/loc_pla.h
index 9446888..e795a23 100644
--- a/pla/oe/loc_pla.h
+++ b/pla/oe/loc_pla.h
@@ -30,7 +30,10 @@
 #define __LOC_PLA__
 
 #ifdef __cplusplus
+#ifndef FEATURE_EXTERNAL_AP
 #include <utils/SystemClock.h>
+#endif /* FEATURE_EXTERNAL_AP */
+#include <inttypes.h>
 #include <sys/time.h>
 #include <time.h>
 
@@ -47,10 +50,14 @@ inline int64_t uptimeMillis()
 extern "C" {
 #endif
 
+#ifndef FEATURE_EXTERNAL_AP
 #include <cutils/properties.h>
 #include <cutils/threads.h>
 #include <cutils/sched_policy.h>
+#endif /* FEATURE_EXTERNAL_AP */
+#include <pthread.h>
 #include <sys/time.h>
+#include <sys/types.h>
 #include <string.h>
 #include <stdlib.h>
 #ifndef OFF_TARGET
@@ -76,6 +83,16 @@ extern "C" {
 #define LOC_PATH_XTWIFI_CONF_STR   "/etc/xtwifi.conf"
 #define LOC_PATH_QUIPC_CONF_STR    "/etc/quipc.conf"
 
+#ifdef FEATURE_EXTERNAL_AP
+#define PROPERTY_VALUE_MAX 92
+
+inline int property_get(const char* key, char* value, const char* default_value)
+{
+    strlcpy(value, default_value, PROPERTY_VALUE_MAX - 1);
+    return strlen(value);
+}
+#endif /* FEATURE_EXTERNAL_AP */
+
 #ifdef __cplusplus
 }
 #endif /*__cplusplus */
diff --git a/utils/Android.mk b/utils/Android.mk
index ec6bf05..3887696 100644
--- a/utils/Android.mk
+++ b/utils/Android.mk
@@ -9,6 +9,7 @@ include $(CLEAR_VARS)
 
 ## Libs
 LOCAL_SHARED_LIBRARIES := \
+    libdl \
     libutils \
     libcutils \
     liblog \
diff --git a/utils/LocIpc.h b/utils/LocIpc.h
index 87f2ff8..90f9e1b 100644
--- a/utils/LocIpc.h
+++ b/utils/LocIpc.h
@@ -27,8 +27,8 @@
  *
  */
 
-#ifndef __LOC_SOCKET__
-#define __LOC_SOCKET__
+#ifndef __LOC_IPC__
+#define __LOC_IPC__
 
 #include <string>
 #include <memory>
@@ -105,7 +105,7 @@ public:
     // This class hides generated fd and destination address object from user.
     inline LocIpcSender(const char* destSocket):
             LocIpcSender(std::make_shared<int>(::socket(AF_UNIX, SOCK_DGRAM, 0)), destSocket) {
-        if (-1 == *mSocket) {
+        if (mSocket != nullptr && -1 == *mSocket) {
             mSocket = nullptr;
         }
     }
@@ -149,4 +149,4 @@ private:
 
 }
 
-#endif //__LOC_SOCKET__
+#endif //__LOC_IPC__
diff --git a/utils/LocSharedLock.h b/utils/LocSharedLock.h
index 7fe6237..a7af35e 100644
--- a/utils/LocSharedLock.h
+++ b/utils/LocSharedLock.h
@@ -30,10 +30,28 @@
 #define __LOC_SHARED_LOCK__
 
 #include <stddef.h>
+#ifndef FEATURE_EXTERNAL_AP
 #include <cutils/atomic.h>
+#endif /* FEATURE_EXTERNAL_AP */
 #include <pthread.h>
 
-// This is a utility created for use cases such that there are more than
+#ifdef FEATURE_EXTERNAL_AP
+#include <atomic>
+
+inline int32_t android_atomic_inc(volatile int32_t *addr)
+{
+    volatile std::atomic_int_least32_t* a = (volatile std::atomic_int_least32_t*)addr;
+    return std::atomic_fetch_add_explicit(a, 1, std::memory_order_release);
+}
+
+inline int32_t android_atomic_dec(volatile int32_t *addr)
+{
+    volatile std::atomic_int_least32_t* a = (volatile std::atomic_int_least32_t*)addr;
+    return std::atomic_fetch_sub_explicit(a, 1, std::memory_order_release);
+}
+
+#endif /* FEATURE_EXTERNAL_AP */
+ // 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,
diff --git a/utils/LocThread.cpp b/utils/LocThread.cpp
index c1052cb..568a6bb 100644
--- a/utils/LocThread.cpp
+++ b/utils/LocThread.cpp
@@ -85,8 +85,8 @@ LocThreadDelegate::LocThreadDelegate(LocThread::tCreate creator,
     if (mThandle) {
         // set thread name
         char lname[16];
-        int len = (sizeof(lname)>sizeof(threadName)) ?
-          (sizeof(threadName) -1):(sizeof(lname) - 1);
+        int len = (sizeof(lname) > (strlen(threadName) + 1)) ?
+          (strlen(threadName)):(sizeof(lname) - 1);
         memcpy(lname, threadName, len);
         lname[len] = 0;
         // set the thread name here
diff --git a/utils/Makefile.am b/utils/Makefile.am
index 33afc1b..50e1e9a 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -61,7 +61,7 @@ libgps_utils_la_LDFLAGS = -Wl,-z,defs -lpthread -shared -version-info 1:0:0
 libgps_utils_la_CPPFLAGS = $(AM_CFLAGS) $(AM_CPPFLAGS)
 endif
 
-libgps_utils_la_LIBADD = $(CUTILS_LIBS)
+libgps_utils_la_LIBADD = $(CUTILS_LIBS) -ldl
 
 #Create and Install libraries
 lib_LTLIBRARIES = libgps_utils.la
diff --git a/utils/MsgTask.cpp b/utils/MsgTask.cpp
index ad95a83..73a77fd 100644
--- a/utils/MsgTask.cpp
+++ b/utils/MsgTask.cpp
@@ -83,8 +83,10 @@ void MsgTask::sendMsg(const LocMsg* msg) const {
 }
 
 void MsgTask::prerun() {
+#ifndef FEATURE_EXTERNAL_AP
     // make sure we do not run in background scheduling group
      set_sched_policy(gettid(), SP_FOREGROUND);
+#endif /* FEATURE_EXTERNAL_AP */
 }
 
 bool MsgTask::run() {
diff --git a/utils/configure.ac b/utils/configure.ac
index 639f8c4..fd16494 100644
--- a/utils/configure.ac
+++ b/utils/configure.ac
@@ -28,10 +28,20 @@ AC_PROG_LN_S
 AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
 
-# Checks for libraries.
-PKG_CHECK_MODULES([CUTILS], [libcutils])
-AC_SUBST([CUTILS_CFLAGS])
-AC_SUBST([CUTILS_LIBS])
+AC_ARG_WITH([external_ap],
+    AC_HELP_STRING([--with-external_ap=@<:@dir@:>@],
+        [Using External Application Processor]),
+    [],
+    with_external_ap=no)
+
+if test "x$with_external_ap" != "xno"; then
+    CPPFLAGS="${CPPFLAGS} -DFEATURE_EXTERNAL_AP"
+else
+    # Checks for libraries.
+    PKG_CHECK_MODULES([CUTILS], [libcutils])
+    AC_SUBST([CUTILS_CFLAGS])
+    AC_SUBST([CUTILS_LIBS])
+fi
 
 AC_ARG_WITH([core_includes],
       AC_HELP_STRING([--with-core-includes=@<:@dir@:>@],
diff --git a/utils/gps_extended_c.h b/utils/gps_extended_c.h
index 8ddf488..242fe84 100644
--- a/utils/gps_extended_c.h
+++ b/utils/gps_extended_c.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2018 The Linux Foundation. All rights reserved.
+/* Copyright (c) 2013-2019 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
@@ -199,6 +199,11 @@ typedef struct {
     AgpsCbPriority cbPriority;
 } AgpsCbInfo;
 
+typedef struct {
+    void* visibilityControlCb;
+    void* isInEmergencySession;
+} NfwCbInfo;
+
 /** GPS extended callback structure. */
 typedef struct {
     /** set to sizeof(LocGpsCallbacks) */
@@ -407,9 +412,18 @@ typedef uint32_t LocPosDataMask;
 /* Bitmask to specify whether Navigation data has Body pitch Unc*/
 #define LOC_NAV_DATA_HAS_PITCH_UNC ((LocPosDataMask)0x0200)
 
+typedef uint32_t GnssAdditionalSystemInfoMask;
+/* Bitmask to specify whether Tauc is valid */
+#define GNSS_ADDITIONAL_SYSTEMINFO_HAS_TAUC ((GnssAdditionalSystemInfoMask)0x0001)
+/* Bitmask to specify whether leapSec is valid */
+#define GNSS_ADDITIONAL_SYSTEMINFO_HAS_LEAP_SEC ((GnssAdditionalSystemInfoMask)0x0002)
+
+
 /** GPS PRN Range */
 #define GPS_SV_PRN_MIN      1
 #define GPS_SV_PRN_MAX      32
+#define SBAS_SV_PRN_MIN     33
+#define SBAS_SV_PRN_MAX     64
 #define GLO_SV_PRN_MIN      65
 #define GLO_SV_PRN_MAX      96
 #define QZSS_SV_PRN_MIN     193
@@ -838,8 +852,8 @@ enum loc_api_adapter_event_index {
     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_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
@@ -853,6 +867,8 @@ enum loc_api_adapter_event_index {
     LOC_API_ADAPTER_BS_OBS_DATA_SERVICE_REQ,           // BS observation data request
     LOC_API_ADAPTER_GNSS_SV_EPHEMERIS_REPORT,          // GNSS SV Ephemeris Report
     LOC_API_ADAPTER_LOC_SYSTEM_INFO,                   // Location system info event
+    LOC_API_ADAPTER_GNSS_NHZ_MEASUREMENT_REPORT,       // GNSS SV nHz measurement report
+    LOC_API_ADAPTER_EVENT_REPORT_INFO,                 // Event report info
     LOC_API_ADAPTER_EVENT_MAX
 };
 
@@ -893,6 +909,8 @@ enum loc_api_adapter_event_index {
 #define LOC_API_ADAPTER_BIT_BS_OBS_DATA_SERVICE_REQ          (1ULL<<LOC_API_ADAPTER_BS_OBS_DATA_SERVICE_REQ)
 #define LOC_API_ADAPTER_BIT_GNSS_SV_EPHEMERIS_REPORT         (1ULL<<LOC_API_ADAPTER_GNSS_SV_EPHEMERIS_REPORT)
 #define LOC_API_ADAPTER_BIT_LOC_SYSTEM_INFO                  (1ULL<<LOC_API_ADAPTER_LOC_SYSTEM_INFO)
+#define LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT             (1ULL<<LOC_API_ADAPTER_GNSS_NHZ_MEASUREMENT_REPORT)
+#define LOC_API_ADAPTER_BIT_EVENT_REPORT_INFO                (1ULL<<LOC_API_ADAPTER_EVENT_REPORT_INFO)
 
 typedef uint64_t LOC_API_ADAPTER_EVENT_MASK_T;
 
@@ -925,7 +943,8 @@ typedef uint32_t LOC_GPS_LOCK_MASK;
 #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
+/** Max number of GNSS SV measurement */
+#define GNSS_LOC_SV_MEAS_LIST_MAX_SIZE              128
 
 enum ulp_gnss_sv_measurement_valid_flags{
 
@@ -1055,71 +1074,12 @@ typedef struct
     /**< 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
-    */
+} Gnss_InterSystemBiasStructType;
 
-  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 */
@@ -1129,13 +1089,8 @@ typedef struct {
         - Units: msec \n
         */
 
-  uint32_t  sourceOfTime;
-  /**<   Source of time information */
-
 }Gnss_LocGnssTimeExtStructType;
 
-
-
 typedef enum
 {
     GNSS_LOC_MEAS_STATUS_NULL                    = 0x00000000,
@@ -1231,6 +1186,9 @@ typedef enum
 typedef struct
 {
     size_t                          size;
+    Gnss_LocSvSystemEnumType        gnssSystem;
+    // 0 signal type mask indicates invalid value
+    GnssSignalTypeMask              gnssSignalTypeMask;
     uint16_t                        gnssSvId;
     /**< GNSS SV ID.
          \begin{itemize1}
@@ -1367,73 +1325,84 @@ typedef struct
 
 } 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 */
+typedef uint64_t GpsSvMeasHeaderFlags;
+#define GNSS_SV_MEAS_HEADER_HAS_LEAP_SECOND                0x00000001
+#define GNSS_SV_MEAS_HEADER_HAS_CLOCK_FREQ                 0x00000002
+#define GNSS_SV_MEAS_HEADER_HAS_AP_TIMESTAMP               0x00000004
+#define GNSS_SV_MEAS_HEADER_HAS_GPS_GLO_INTER_SYSTEM_BIAS  0x00000008
+#define GNSS_SV_MEAS_HEADER_HAS_GPS_BDS_INTER_SYSTEM_BIAS  0x00000010
+#define GNSS_SV_MEAS_HEADER_HAS_GPS_GAL_INTER_SYSTEM_BIAS  0x00000020
+#define GNSS_SV_MEAS_HEADER_HAS_BDS_GLO_INTER_SYSTEM_BIAS  0x00000040
+#define GNSS_SV_MEAS_HEADER_HAS_GAL_GLO_INTER_SYSTEM_BIAS  0x00000080
+#define GNSS_SV_MEAS_HEADER_HAS_GAL_BDS_INTER_SYSTEM_BIAS  0x00000100
+#define GNSS_SV_MEAS_HEADER_HAS_GPS_SYSTEM_TIME            0x00000200
+#define GNSS_SV_MEAS_HEADER_HAS_GAL_SYSTEM_TIME            0x00000400
+#define GNSS_SV_MEAS_HEADER_HAS_BDS_SYSTEM_TIME            0x00000800
+#define GNSS_SV_MEAS_HEADER_HAS_QZSS_SYSTEM_TIME           0x00001000
+#define GNSS_SV_MEAS_HEADER_HAS_GLO_SYSTEM_TIME            0x00002000
+#define GNSS_SV_MEAS_HEADER_HAS_GPS_SYSTEM_TIME_EXT        0x00004000
+#define GNSS_SV_MEAS_HEADER_HAS_GAL_SYSTEM_TIME_EXT        0x00008000
+#define GNSS_SV_MEAS_HEADER_HAS_BDS_SYSTEM_TIME_EXT        0x00010000
+#define GNSS_SV_MEAS_HEADER_HAS_QZSS_SYSTEM_TIME_EXT       0x00020000
+#define GNSS_SV_MEAS_HEADER_HAS_GPSL1L5_TIME_BIAS          0x00040000
+#define GNSS_SV_MEAS_HEADER_HAS_GALE1E5A_TIME_BIAS         0x00080000
 
-    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. */
+    // see defines in GNSS_SV_MEAS_HEADER_HAS_XXX_XXX
+    uint64_t                                    flags;
 
-    bool                                     leapSecValid;
     Gnss_LeapSecondInfoStructType               leapSec;
 
-    Gnss_InterSystemBiasStructType              gpsGloInterSystemBias;
+    Gnss_LocRcvrClockFrequencyInfoStructType    clockFreq;   /* Freq */
 
-    Gnss_InterSystemBiasStructType              gpsBdsInterSystemBias;
+    Gnss_ApTimeStampStructType                  apBootTimeStamp;
 
+    Gnss_InterSystemBiasStructType              gpsGloInterSystemBias;
+    Gnss_InterSystemBiasStructType              gpsBdsInterSystemBias;
     Gnss_InterSystemBiasStructType              gpsGalInterSystemBias;
-
     Gnss_InterSystemBiasStructType              bdsGloInterSystemBias;
-
     Gnss_InterSystemBiasStructType              galGloInterSystemBias;
-
     Gnss_InterSystemBiasStructType              galBdsInterSystemBias;
+    Gnss_InterSystemBiasStructType              gpsL1L5TimeBias;
+    Gnss_InterSystemBiasStructType              galE1E5aTimeBias;
+
+    GnssSystemTimeStructType                    gpsSystemTime;
+    GnssSystemTimeStructType                    galSystemTime;
+    GnssSystemTimeStructType                    bdsSystemTime;
+    GnssSystemTimeStructType                    qzssSystemTime;
+    GnssGloTimeStructType                       gloSystemTime;
+
+    /** GPS system RTC time information. */
+    Gnss_LocGnssTimeExtStructType               gpsSystemTimeExt;
+    /** GAL system RTC time information. */
+    Gnss_LocGnssTimeExtStructType               galSystemTimeExt;
+    /** BDS system RTC time information. */
+    Gnss_LocGnssTimeExtStructType               bdsSystemTimeExt;
+    /** QZSS system RTC time information. */
+    Gnss_LocGnssTimeExtStructType               qzssSystemTimeExt;
+
+} GnssSvMeasurementHeader;
 
-    bool                                     clockFreqValid;
-    Gnss_LocRcvrClockFrequencyInfoStructType    clockFreq;   /* Freq */
-    bool                                     gnssMeasValid;
-    Gnss_ClockMeasurementStructType             gnssMeas;
-    Gnss_ApTimeStampStructType               timeStamp;
-    /*  Extended Time Information - Cumulative Number of Clock Resets */
-    uint8_t numClockResets_valid;  /**< Must be set to true if numClockResets is being passed */
-    uint32_t numClockResets;
-    bool                                     gnssSignalTypeMaskValid;
-    GnssSignalTypeMask                       gnssSignalTypeMask;
+typedef struct {
+    size_t                        size;
+    bool                          isNhz;
+    GnssSvMeasurementHeader       svMeasSetHeader;
+    uint32_t                      svMeasCount;
+    Gnss_SVMeasurementStructType  svMeas[GNSS_LOC_SV_MEAS_LIST_MAX_SIZE];
 
 } GnssSvMeasurementSet;
 
+typedef struct {
+    uint32_t size;                  // set to sizeof(GnssMeasurements)
+    GnssSvMeasurementSet            gnssSvMeasurementSet;
+    GnssMeasurementsNotification    gnssMeasNotification;
+} GnssMeasurements;
+
 typedef enum
 {
    GNSS_SV_POLY_COEFF_VALID             = 0x01,
@@ -1916,6 +1885,10 @@ typedef struct {
         Mandatory field */
     Gnss_LocSvSystemEnumType gnssConstellation;
 
+    /** GPS System Time of the ephemeris report */
+    bool isSystemTimeValid;
+    GnssSystemTimeStructType systemTime;
+
     union {
        /** GPS Ephemeris */
        GpsEphemerisResponse gpsEphemeris;
@@ -1930,6 +1903,73 @@ typedef struct {
     } ephInfo;
 } GnssSvEphemerisReport;
 
+typedef struct {
+    /** GPS System Time of the iono model report */
+    bool isSystemTimeValid;
+    GnssSystemTimeStructType systemTime;
+
+    /** Indicates GNSS Constellation Type */
+    Gnss_LocSvSystemEnumType gnssConstellation;
+
+    float alpha0;
+    /**<   Klobuchar Model Parameter Alpha 0.
+         - Type: float
+         - Unit: Seconds
+    */
+
+    float alpha1;
+    /**<   Klobuchar Model Parameter Alpha 1.
+         - Type: float
+         - Unit: Seconds / Semi-Circle
+    */
+
+    float alpha2;
+    /**<   Klobuchar Model Parameter Alpha 2.
+         - Type: float
+         - Unit: Seconds / Semi-Circle^2
+    */
+
+    float alpha3;
+    /**<   Klobuchar Model Parameter Alpha 3.
+         - Type: float
+         - Unit: Seconds / Semi-Circle^3
+    */
+
+    float beta0;
+    /**<   Klobuchar Model Parameter Beta 0.
+         - Type: float
+         - Unit: Seconds
+    */
+
+    float beta1;
+    /**<   Klobuchar Model Parameter Beta 1.
+         - Type: float
+         - Unit: Seconds / Semi-Circle
+    */
+
+    float beta2;
+    /**<   Klobuchar Model Parameter Beta 2.
+         - Type: float
+         - Unit: Seconds / Semi-Circle^2
+    */
+
+    float beta3;
+    /**<   Klobuchar Model Parameter Beta 3.
+         - Type: float
+         - Unit: Seconds / Semi-Circle^3
+    */
+} GnssKlobucharIonoModel;
+
+typedef struct {
+        /** GPS System Time of the report */
+    bool isSystemTimeValid;
+    GnssSystemTimeStructType systemTime;
+
+    GnssAdditionalSystemInfoMask validityMask;
+    double tauC;
+    int8_t leapSec;
+} GnssAdditionalSystemInfo;
+
 /* Various Short Range Node Technology type*/
 typedef enum {
     SRN_AP_DATA_TECH_TYPE_NONE,
@@ -2009,6 +2049,46 @@ struct AGnssExtStatusIpV6 {
     uint8_t             ipV6Addr[16];
 };
 
+/*
+* Represents the the Nfw Notification structure
+*/
+#define GNSS_MAX_NFW_STRING_LEN  20
+
+typedef enum {
+    GNSS_NFW_CTRL_PLANE = 0,
+    GNSS_NFW_SUPL = 1,
+    GNSS_NFW_IMS = 10,
+    GNSS_NFW_SIM = 11,
+    GNSS_NFW_OTHER_PROTOCOL_STACK = 100
+} GnssNfwProtocolStack;
+
+typedef enum {
+    GNSS_NFW_CARRIER = 0,
+    GNSS_NFW_OEM = 10,
+    GNSS_NFW_MODEM_CHIPSET_VENDOR = 11,
+    GNSS_NFW_GNSS_CHIPSET_VENDOR = 12,
+    GNSS_NFW_OTHER_CHIPSET_VENDOR = 13,
+    GNSS_NFW_AUTOMOBILE_CLIENT = 20,
+    GNSS_NFW_OTHER_REQUESTOR = 100
+} GnssNfwRequestor;
+
+typedef enum {
+    GNSS_NFW_REJECTED = 0,
+    GNSS_NFW_ACCEPTED_NO_LOCATION_PROVIDED = 1,
+    GNSS_NFW_ACCEPTED_LOCATION_PROVIDED = 2,
+} GnssNfwResponseType;
+
+typedef struct {
+    char                    proxyAppPackageName[GNSS_MAX_NFW_STRING_LEN];
+    GnssNfwProtocolStack    protocolStack;
+    char                    otherProtocolStackName[GNSS_MAX_NFW_STRING_LEN];
+    GnssNfwRequestor        requestor;
+    char                    requestorId[GNSS_MAX_NFW_STRING_LEN];
+    GnssNfwResponseType     responseType;
+    bool                    inEmergencyMode;
+    bool                    isCachedLocation;
+} GnssNfwNotification;
+
 /* ODCPI Request Info */
 enum OdcpiRequestType {
     ODCPI_REQUEST_TYPE_START,
@@ -2031,6 +2111,11 @@ typedef std::function<void(const OdcpiRequestInfo& request)> OdcpiRequestCallbac
 typedef void (*AgnssStatusIpV4Cb)(AGnssExtStatusIpV4 status);
 
 /*
+* Callback with NFW information.
+*/
+typedef void(*NfwStatusCb)(GnssNfwNotification notification);
+
+/*
  * Callback with AGNSS(IpV6) status information.
  *
  * @param status Will be of type AGnssExtStatusIpV6.
@@ -2053,6 +2138,10 @@ typedef void (*LocAgpsCloseResultCb)(bool isSuccess, AGpsExtType agpsType, void*
 
 #define SOCKET_DIR_TO_CLIENT           "/dev/socket/loc_client/"
 #define SOCKET_TO_LOCATION_CLIENT_BASE "/dev/socket/loc_client/toclient"
+#define SOCKET_TO_EXTERANL_AP_LOCATION_CLIENT_BASE "/dev/socket/loc_client/extap.toclient"
+
+typedef uint64_t NetworkHandle;
+#define NETWORK_HANDLE_UNKNOWN  ~0
 
 #ifdef __cplusplus
 }
diff --git a/utils/linked_list.h b/utils/linked_list.h
index a85f09a..0b33ecb 100644
--- a/utils/linked_list.h
+++ b/utils/linked_list.h
@@ -50,6 +50,8 @@ typedef enum
      /**< Failed because an there were not enough resources. */
   eLINKED_LIST_INSUFFICIENT_BUFFER                 = -5,
      /**< Failed because an the supplied buffer was too small. */
+  eLINKED_LIST_EMPTY                               = -6
+     /**< Failed because list is empty. */
 }linked_list_err_type;
 
 /*===========================================================================
diff --git a/utils/loc_cfg.cpp b/utils/loc_cfg.cpp
index 8160cc1..de887ee 100644
--- a/utils/loc_cfg.cpp
+++ b/utils/loc_cfg.cpp
@@ -465,14 +465,9 @@ void loc_read_conf(const char* conf_file_name, const loc_param_s_type* config_ta
 #define LOC_FEATURE_MASK_GTP_WIFI_PREMIUM          0X02
 #define LOC_FEATURE_MASK_GTP_CELL_BASIC            0X04
 #define LOC_FEATURE_MASK_GTP_CELL_PREMIUM          0X08
-#define LOC_FEATURE_MASK_GTP_AP_CELL_BASIC         LOC_FEATURE_MASK_GTP_CELL_BASIC
-#define LOC_FEATURE_MASK_GTP_AP_CELL_PREMIUM       LOC_FEATURE_MASK_GTP_CELL_PREMIUM
 #define LOC_FEATURE_MASK_SAP_BASIC                 0x40
 #define LOC_FEATURE_MASK_SAP_PREMIUM               0X80
-#define LOC_FEATURE_MASK_GTP_WAA_BASIC             0X100
-#define LOC_FEATURE_MASK_GTP_WAA_PREMIUM           0x200
 #define LOC_FEATURE_MASK_GTP_MODEM_CELL_BASIC      0X400
-#define LOC_FEATURE_MASK_GTP_MODEM_CELL_PREMIUM    0X800
 #define LOC_FEATURE_MASK_ODCPI                     0x1000
 #define LOC_FEATURE_MASK_FREE_WIFI_SCAN_INJECT     0x2000
 #define LOC_FEATURE_MASK_SUPL_WIFI                 0x4000
@@ -572,8 +567,6 @@ int loc_read_process_conf(const char* conf_file_name, uint32_t * process_count_p
     char config_mask = 0;
     unsigned char proc_list_length=0;
     int gtp_cell_ap_enabled = 0;
-    char arg_gtp_waa[LOC_PROCESS_MAX_ARG_STR_LENGTH] = "--";
-    char arg_gtp_ap_cell[LOC_PROCESS_MAX_ARG_STR_LENGTH] = "--";
     char arg_gtp_modem_cell[LOC_PROCESS_MAX_ARG_STR_LENGTH] = "--";
     char arg_gtp_wifi[LOC_PROCESS_MAX_ARG_STR_LENGTH] = "--";
     char arg_sap[LOC_PROCESS_MAX_ARG_STR_LENGTH] = "--";
@@ -589,8 +582,6 @@ int loc_read_process_conf(const char* conf_file_name, uint32_t * process_count_p
     UTIL_READ_CONF(LOC_PATH_GPS_CONF, gps_conf_parameter_table);
 
     //Form argument strings
-    strlcat(arg_gtp_waa, LOC_FEATURE_GTP_WAA, LOC_PROCESS_MAX_ARG_STR_LENGTH-3);
-    strlcat(arg_gtp_ap_cell, LOC_FEATURE_GTP_AP_CELL, LOC_PROCESS_MAX_ARG_STR_LENGTH-3);
     strlcat(arg_gtp_modem_cell, LOC_FEATURE_GTP_MODEM_CELL, LOC_PROCESS_MAX_ARG_STR_LENGTH-3);
     strlcat(arg_gtp_wifi, LOC_FEATURE_GTP_WIFI, LOC_PROCESS_MAX_ARG_STR_LENGTH-3);
     strlcat(arg_sap, LOC_FEATURE_SAP, LOC_PROCESS_MAX_ARG_STR_LENGTH-3);
@@ -622,9 +613,6 @@ int loc_read_process_conf(const char* conf_file_name, uint32_t * process_count_p
                  " Setting GTP WIFI to default mode: DISABLED", __func__, __LINE__);
     }
 
-    //Set service mask for GTP_WAA
-    LOC_LOGD("%s:%d]: GTP WAA DISABLED", __func__, __LINE__);
-
     //Set service mask for SAP
     if(strcmp(conf.feature_sap, "PREMIUM") == 0) {
         LOC_LOGD("%s:%d]: Setting SAP to mode: PREMIUM", __func__, __LINE__);
@@ -931,51 +919,13 @@ int loc_read_process_conf(const char* conf_file_name, uint32_t * process_count_p
                     }
                     if(conf.loc_feature_mask &
                        (LOC_FEATURE_MASK_GTP_CELL_BASIC | LOC_FEATURE_MASK_GTP_CELL_PREMIUM )) {
-                        if(loc_service_mask & LOC_FEATURE_MASK_GTP_AP_CELL_BASIC){
-                            strlcpy(child_proc[j].args[i++], arg_gtp_ap_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_basic,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_gtp_modem_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_disabled,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                        else if(loc_service_mask & LOC_FEATURE_MASK_GTP_AP_CELL_PREMIUM){
-                            strlcpy(child_proc[j].args[i++], arg_gtp_ap_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_premium,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_gtp_modem_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_disabled,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                        else if(loc_service_mask & LOC_FEATURE_MASK_GTP_MODEM_CELL_BASIC) {
+                        if(loc_service_mask & LOC_FEATURE_MASK_GTP_MODEM_CELL_BASIC) {
                             strlcpy(child_proc[j].args[i++], arg_gtp_modem_cell,
                                     LOC_PROCESS_MAX_ARG_STR_LENGTH);
                             strlcpy(child_proc[j].args[i++], arg_basic,
                                     LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_gtp_ap_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_disabled,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                        else if(loc_service_mask & LOC_FEATURE_MASK_GTP_MODEM_CELL_PREMIUM) {
-                            strlcpy(child_proc[j].args[i++], arg_gtp_modem_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_premium,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_gtp_ap_cell,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_disabled,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
                         }
                         else {
-                             strlcpy(child_proc[j].args[i++], arg_gtp_ap_cell,
-                                     LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                             strlcpy(child_proc[j].args[i++], arg_disabled,
-                                     LOC_PROCESS_MAX_ARG_STR_LENGTH);
                              strlcpy(child_proc[j].args[i++], arg_gtp_modem_cell,
                                      LOC_PROCESS_MAX_ARG_STR_LENGTH);
                              strlcpy(child_proc[j].args[i++], arg_disabled,
@@ -983,28 +933,6 @@ int loc_read_process_conf(const char* conf_file_name, uint32_t * process_count_p
                        }
                     }
                     if(conf.loc_feature_mask &
-                       (LOC_FEATURE_MASK_GTP_WAA_BASIC | LOC_FEATURE_MASK_GTP_WAA_PREMIUM)) {
-                        if(loc_service_mask & LOC_FEATURE_MASK_GTP_WAA_BASIC) {
-                            strlcpy(child_proc[j].args[i++], arg_gtp_waa,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_basic,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                        else if(loc_service_mask & LOC_FEATURE_MASK_GTP_WAA_PREMIUM) {
-                            strlcpy(child_proc[j].args[i++], arg_gtp_waa,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_premium,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                        else
-                        {
-                            strlcpy(child_proc[j].args[i++], arg_gtp_waa,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                            strlcpy(child_proc[j].args[i++], arg_disabled,
-                                    LOC_PROCESS_MAX_ARG_STR_LENGTH);
-                        }
-                    }
-                    if(conf.loc_feature_mask &
                        (LOC_FEATURE_MASK_SAP_BASIC | LOC_FEATURE_MASK_SAP_PREMIUM)) {
                         if(loc_service_mask & LOC_FEATURE_MASK_SAP_BASIC) {
                             strlcpy(child_proc[j].args[i++], arg_sap,
diff --git a/utils/loc_misc_utils.cpp b/utils/loc_misc_utils.cpp
index b7c8406..70fdbc3 100644
--- a/utils/loc_misc_utils.cpp
+++ b/utils/loc_misc_utils.cpp
@@ -30,6 +30,7 @@
 #define LOG_TAG "LocSvc_misc_utils"
 #include <stdio.h>
 #include <string.h>
+#include <dlfcn.h>
 #include <log_util.h>
 #include <loc_misc_utils.h>
 #include <ctype.h>
@@ -112,3 +113,33 @@ void loc_util_trim_space(char *org_string)
 err:
     return;
 }
+
+inline void logDlError(const char* failedCall) {
+    const char * err = dlerror();
+    LOC_LOGe("%s error: %s", failedCall, (nullptr == err) ? "unknown" : err);
+}
+
+void* dlGetSymFromLib(void*& libHandle, const char* libName, const char* symName)
+{
+    void* sym = nullptr;
+    if ((nullptr != libHandle || nullptr != libName) && nullptr != symName) {
+        if (nullptr == libHandle) {
+            libHandle = dlopen(libName, RTLD_NOW);
+            if (nullptr == libHandle) {
+                logDlError("dlopen");
+            }
+        }
+        // NOT else, as libHandle gets assigned 5 line above
+        if (nullptr != libHandle) {
+            sym = dlsym(libHandle, symName);
+            if (nullptr == sym) {
+                logDlError("dlsym");
+            }
+        }
+    } else {
+        LOC_LOGe("Either libHandle (%p) or libName (%p) must not be null; "
+                 "symName (%p) can not be null.", libHandle, libName, symName);
+    }
+
+    return sym;
+}
diff --git a/utils/loc_misc_utils.h b/utils/loc_misc_utils.h
index 7d66d84..fad1b6d 100644
--- a/utils/loc_misc_utils.h
+++ b/utils/loc_misc_utils.h
@@ -92,6 +92,34 @@ SIDE EFFECTS
    N/A
 ===========================================================================*/
 void loc_util_trim_space(char *org_string);
+
+/*===========================================================================
+FUNCTION dlGetSymFromLib
+
+DESCRIPTION
+   Handy function to get a pointer to a symbol from a library.
+
+   If libHandle is not null, it will be used as the handle to the library. In
+   that case libName wll not be used;
+   libHandle is an in / out parameter.
+   If libHandle is null, libName will be used to dlopen.
+   Either libHandle or libName must not be nullptr.
+   symName must not be null.
+
+DEPENDENCIES
+   N/A
+
+RETURN VALUE
+   pointer to symName. Could be nullptr if
+       Parameters are incorrect; or
+       libName can not be opened; or
+       symName can not be found.
+
+SIDE EFFECTS
+   N/A
+===========================================================================*/
+void* dlGetSymFromLib(void*& libHandle, const char* libName, const char* symName);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/utils/loc_nmea.cpp b/utils/loc_nmea.cpp
index e9a8f84..9cd3472 100644
--- a/utils/loc_nmea.cpp
+++ b/utils/loc_nmea.cpp
@@ -44,9 +44,9 @@
 #define SYSTEM_ID_GPS          1
 #define SYSTEM_ID_GLONASS      2
 #define SYSTEM_ID_GALILEO      3
-// Extended systems
-#define SYSTEM_ID_BEIDOU       4
+#define SYSTEM_ID_BDS          4
 #define SYSTEM_ID_QZSS         5
+#define SYSTEM_ID_NAVIC        6
 
 //GNSS signal id according to NMEA spec
 #define SIGNAL_ID_ALL_SIGNALS  0
@@ -74,11 +74,35 @@
 #define SIGNAL_ID_GAL_L1A      6
 #define SIGNAL_ID_GAL_L1BC     7
 
-//Extended signal id
 #define SIGNAL_ID_BDS_B1I      1
-#define SIGNAL_ID_BDS_B1C      2
-#define SIGNAL_ID_BDS_B2I      3
-#define SIGNAL_ID_BDS_B2AI     4
+#define SIGNAL_ID_BDS_B1Q      2
+#define SIGNAL_ID_BDS_B1C      3
+#define SIGNAL_ID_BDS_B1A      4
+#define SIGNAL_ID_BDS_B2A      5
+#define SIGNAL_ID_BDS_B2B      6
+#define SIGNAL_ID_BDS_B2AB     7
+#define SIGNAL_ID_BDS_B3I      8
+#define SIGNAL_ID_BDS_B3Q      9
+#define SIGNAL_ID_BDS_B3A      0xA
+#define SIGNAL_ID_BDS_B2I      0xB
+#define SIGNAL_ID_BDS_B2Q      0xC
+
+#define SIGNAL_ID_QZSS_L1CA    1
+#define SIGNAL_ID_QZSS_L1CD    2
+#define SIGNAL_ID_QZSS_L1CP    3
+#define SIGNAL_ID_QZSS_LIS     4
+#define SIGNAL_ID_QZSS_L2CM    5
+#define SIGNAL_ID_QZSS_L2CL    6
+#define SIGNAL_ID_QZSS_L5I     7
+#define SIGNAL_ID_QZSS_L5Q     8
+#define SIGNAL_ID_QZSS_L6D     9
+#define SIGNAL_ID_QZSS_L6E     0xA
+
+#define SIGNAL_ID_NAVIC_L5SPS  1
+#define SIGNAL_ID_NAVIC_SSPS   2
+#define SIGNAL_ID_NAVIC_L5RS   3
+#define SIGNAL_ID_NAVIC_SRS    4
+#define SIGNAL_ID_NAVIC_L1SPS  5
 
 
 typedef struct loc_nmea_sv_meta_s
@@ -280,13 +304,13 @@ static uint32_t convert_signalType_to_signalId(GnssSignalTypeMask signalType)
             signalId = SIGNAL_ID_GAL_E5B;
             break;
         case GNSS_SIGNAL_QZSS_L1CA:
-            signalId = SIGNAL_ID_GPS_L1CA;
+            signalId = SIGNAL_ID_QZSS_L1CA;
             break;
         case GNSS_SIGNAL_QZSS_L2:
-            signalId = SIGNAL_ID_GPS_L2CL;
+            signalId = SIGNAL_ID_QZSS_L2CL;
             break;
         case GNSS_SIGNAL_QZSS_L5:
-            signalId = SIGNAL_ID_GPS_L5Q;
+            signalId = SIGNAL_ID_QZSS_L5Q;
             break;
         case GNSS_SIGNAL_BEIDOU_B1I:
             signalId = SIGNAL_ID_BDS_B1I;
@@ -298,7 +322,7 @@ static uint32_t convert_signalType_to_signalId(GnssSignalTypeMask signalType)
             signalId = SIGNAL_ID_BDS_B2I;
             break;
         case GNSS_SIGNAL_BEIDOU_B2AI:
-            signalId = SIGNAL_ID_BDS_B2AI;
+            signalId = SIGNAL_ID_BDS_B2A;
             break;
         default:
             signalId = SIGNAL_ID_ALL_SIGNALS;
@@ -371,7 +395,7 @@ static loc_nmea_sv_meta* loc_nmea_sv_meta_init(loc_nmea_sv_meta& sv_meta,
             }
             break;
         case GNSS_SV_TYPE_QZSS:
-            sv_meta.talker[0] = 'P';
+            sv_meta.talker[0] = 'G';
             sv_meta.talker[1] = 'Q';
             sv_meta.mask = sv_cache_info.qzss_used_mask;
             // QZSS SV ids are from 193-197. So keep svIdOffset 0
@@ -383,11 +407,11 @@ static loc_nmea_sv_meta* loc_nmea_sv_meta_init(loc_nmea_sv_meta& sv_meta,
             }
             break;
         case GNSS_SV_TYPE_BEIDOU:
-            sv_meta.talker[0] = 'P';
-            sv_meta.talker[1] = 'Q';
+            sv_meta.talker[0] = 'G';
+            sv_meta.talker[1] = 'B';
             sv_meta.mask = sv_cache_info.bds_used_mask;
             // BDS SV ids are from 201-235. So keep svIdOffset 0
-            sv_meta.systemId = SYSTEM_ID_BEIDOU;
+            sv_meta.systemId = SYSTEM_ID_BDS;
             if (GNSS_SIGNAL_BEIDOU_B1I == signalType) {
                 sv_meta.svCount = sv_cache_info.bds_b1_count;
             } else if (GNSS_SIGNAL_BEIDOU_B2AI == signalType) {
@@ -626,7 +650,7 @@ static void loc_nmea_generate_GSV(const GnssSvNotification &svNotify,
     if (svCount <= 0)
     {
         // no svs in view, so just send a blank $--GSV sentence
-        snprintf(sentence, lengthRemaining, "$%sGSV,1,1,0,%d", talker, sv_meta_p->signalId);
+        snprintf(sentence, lengthRemaining, "$%sGSV,1,1,0,%X", talker, sv_meta_p->signalId);
         length = loc_nmea_put_checksum(sentence, bufSize);
         nmeaArraystr.push_back(sentence);
         return;
@@ -674,6 +698,9 @@ static void loc_nmea_generate_GSV(const GnssSvNotification &svNotify,
                     case GNSS_SV_TYPE_BEIDOU:
                         signalType = GNSS_SIGNAL_BEIDOU_B1I;
                         break;
+                    case GNSS_SV_TYPE_SBAS:
+                        signalType = GNSS_SIGNAL_SBAS_L1;
+                        break;
                     default:
                         LOC_LOGE("NMEA Error unknow constellation type: %d",
                                 svNotify.gnssSvs[svNumber - 1].type);
@@ -717,7 +744,7 @@ static void loc_nmea_generate_GSV(const GnssSvNotification &svNotify,
         }
 
         // append signalId
-        length = snprintf(pMarker, lengthRemaining,",%d",sv_meta_p->signalId);
+        length = snprintf(pMarker, lengthRemaining,",%X",sv_meta_p->signalId);
         pMarker += length;
         lengthRemaining -= length;
 
@@ -953,6 +980,7 @@ void loc_nmea_generate_pos(const UlpLocation &location,
     char sentence[NMEA_SENTENCE_MAX_LENGTH] = {0};
     char sentence_DTM[NMEA_SENTENCE_MAX_LENGTH] = {0};
     char sentence_RMC[NMEA_SENTENCE_MAX_LENGTH] = {0};
+    char sentence_GNS[NMEA_SENTENCE_MAX_LENGTH] = {0};
     char sentence_GGA[NMEA_SENTENCE_MAX_LENGTH] = {0};
     char* pMarker = sentence;
     int lengthRemaining = sizeof(sentence);
@@ -1051,11 +1079,12 @@ void loc_nmea_generate_pos(const UlpLocation &location,
 
         count = loc_nmea_generate_GSA(locationExtended, sentence, sizeof(sentence),
                         loc_nmea_sv_meta_init(sv_meta, sv_cache_info, GNSS_SV_TYPE_QZSS,
-                        GNSS_SIGNAL_QZSS_L1CA, false), nmeaArraystr);
+                        GNSS_SIGNAL_QZSS_L1CA, true), nmeaArraystr);
         if (count > 0)
         {
             svUsedCount += count;
-            // talker should be default "GP". If GPS, GLO etc is used, it should be "GN"
+            talker[0] = sv_meta.talker[0];
+            talker[1] = sv_meta.talker[1];
         }
 
         // ----------------------------
@@ -1063,11 +1092,12 @@ void loc_nmea_generate_pos(const UlpLocation &location,
         // ----------------------------
         count = loc_nmea_generate_GSA(locationExtended, sentence, sizeof(sentence),
                         loc_nmea_sv_meta_init(sv_meta, sv_cache_info, GNSS_SV_TYPE_BEIDOU,
-                        GNSS_SIGNAL_BEIDOU_B1I, false), nmeaArraystr);
+                        GNSS_SIGNAL_BEIDOU_B1I, true), nmeaArraystr);
         if (count > 0)
         {
             svUsedCount += count;
-            // talker should be default "GP". If GPS, GLO etc is used, it should be "GN"
+            talker[0] = sv_meta.talker[0];
+            talker[1] = sv_meta.talker[1];
         }
 
         // -------------------
@@ -1345,6 +1375,145 @@ void loc_nmea_generate_pos(const UlpLocation &location,
         length = loc_nmea_put_checksum(sentence_RMC, sizeof(sentence_RMC));
 
         // -------------------
+        // ------$--GNS-------
+        // -------------------
+
+        pMarker = sentence_GNS;
+        lengthRemaining = sizeof(sentence_GNS);
+
+        length = snprintf(pMarker, lengthRemaining, "$%sGNS,%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 = ref_lla.lat;
+            double longitude = ref_lla.lon;
+            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_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');
+
+        pMarker += length;
+        lengthRemaining -= length;
+
+        if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_DOP) {
+            length = snprintf(pMarker, lengthRemaining, "%02d,%.1f,",
+                              svUsedCount, locationExtended.hdop);
+        }
+        else {   // no hdop
+            length = snprintf(pMarker, lengthRemaining, "%02d,,",
+                              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,",
+                              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,,",
+                              ref_lla.alt - locationExtended.altitudeMeanSeaLevel);
+        }
+        else
+        {
+            length = snprintf(pMarker, lengthRemaining,",,");
+        }
+
+        pMarker += length;
+        lengthRemaining -= length;
+
+        // hardcode Navigation Status field to 'V'
+        length = snprintf(pMarker, lengthRemaining, ",%c", 'V');
+        pMarker += length;
+        lengthRemaining -= length;
+
+        length = loc_nmea_put_checksum(sentence_GNS, sizeof(sentence_GNS));
+
+
+        // -------------------
         // ------$--GGA-------
         // -------------------
 
@@ -1482,25 +1651,31 @@ void loc_nmea_generate_pos(const UlpLocation &location,
             // ------$--DTM-------
             nmeaArraystr.push_back(sentence_DTM);
         }
+        // ------$--GNS-------
+        nmeaArraystr.push_back(sentence_GNS);
+        if(LOC_GNSS_DATUM_PZ90 == datum_type) {
+            // ------$--DTM-------
+            nmeaArraystr.push_back(sentence_DTM);
+        }
         // ------$--GGA-------
         nmeaArraystr.push_back(sentence_GGA);
 
     }
     //Send blank NMEA reports for non-final fixes
     else {
-        strlcpy(sentence, "$GPGSA,A,1,,,,,,,,,,,,,,,", sizeof(sentence));
+        strlcpy(sentence, "$GPGSA,A,1,,,,,,,,,,,,,,,,", sizeof(sentence));
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
 
-        strlcpy(sentence, "$GNGSA,A,1,,,,,,,,,,,,,,,", sizeof(sentence));
+        strlcpy(sentence, "$GNGSA,A,1,,,,,,,,,,,,,,,,", sizeof(sentence));
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
 
-        strlcpy(sentence, "$PQGSA,A,1,,,,,,,,,,,,,,,", sizeof(sentence));
+        strlcpy(sentence, "$GPVTG,,T,,M,,N,,K,N", sizeof(sentence));
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
 
-        strlcpy(sentence, "$GPVTG,,T,,M,,N,,K,N", sizeof(sentence));
+        strlcpy(sentence, "$GPDTM,,,,,,,,", sizeof(sentence));
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
 
@@ -1508,6 +1683,10 @@ void loc_nmea_generate_pos(const UlpLocation &location,
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
 
+        strlcpy(sentence, "$GPGNS,,,,,,N,,,,,,,V", sizeof(sentence));
+        length = loc_nmea_put_checksum(sentence, sizeof(sentence));
+        nmeaArraystr.push_back(sentence);
+
         strlcpy(sentence, "$GPGGA,,,,,,0,,,,,,,,", sizeof(sentence));
         length = loc_nmea_put_checksum(sentence, sizeof(sentence));
         nmeaArraystr.push_back(sentence);
diff --git a/utils/log_util.h b/utils/log_util.h
index 4fed90b..ed7e19e 100644
--- a/utils/log_util.h
+++ b/utils/log_util.h
@@ -47,6 +47,14 @@
 #endif /* LOG_TAG */
 
 // LE targets with no logcat support
+#ifdef FEATURE_EXTERNAL_AP
+#include <syslog.h>
+#define ALOGE(...) syslog(LOG_ERR,     "LOC_LOGE: " __VA_ARGS__);
+#define ALOGW(...) syslog(LOG_WARNING, "LOC_LOGW: " __VA_ARGS__);
+#define ALOGI(...) syslog(LOG_NOTICE,  "LOC_LOGI: " __VA_ARGS__);
+#define ALOGD(...) syslog(LOG_DEBUG,   "LOC_LOGD: " __VA_ARGS__);
+#define ALOGV(...) syslog(LOG_NOTICE,  "LOC_LOGV: " __VA_ARGS__);
+#else /* FEATURE_EXTERNAL_AP */
 #define TS_PRINTF(format, x...)                                  \
 {                                                                \
     struct timeval tv;                                           \
@@ -64,6 +72,7 @@
 #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 /* FEATURE_EXTERNAL_AP */
 
 #endif /* #if defined (USE_ANDROID_LOGGING) || defined (ANDROID) */
 
diff --git a/utils/msg_q.c b/utils/msg_q.c
index 76c1478..2d49b4a 100644
--- a/utils/msg_q.c
+++ b/utils/msg_q.c
@@ -267,6 +267,51 @@ msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj)
 
 /*===========================================================================
 
+  FUNCTION:   msg_q_rmv
+
+  ===========================================================================*/
+msq_q_err_type msg_q_rmv(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;
+   }
+
+   if (linked_list_empty(p_msg_q->msg_list)) {
+      LOC_LOGW("%s: list is empty !!\n", __FUNCTION__);
+      pthread_mutex_unlock(&p_msg_q->list_mutex);
+      return eLINKED_LIST_EMPTY;
+   }
+
+   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: Removed message %p rv = %d\n", __FUNCTION__, *msg_obj, rv);
+
+   return rv;
+}
+
+
+
+/*===========================================================================
+
   FUNCTION:   msg_q_flush
 
   ===========================================================================*/
diff --git a/utils/msg_q.h b/utils/msg_q.h
index 453b8ce..16df494 100644
--- a/utils/msg_q.h
+++ b/utils/msg_q.h
@@ -158,6 +158,29 @@ SIDE EFFECTS
 msq_q_err_type msg_q_rcv(void* msg_q_data, void** msg_obj);
 
 /*===========================================================================
+FUNCTION    msg_q_rmv
+
+DESCRIPTION
+   Remove 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_rmv(void* msg_q_data, void** msg_obj);
+
+
+/*===========================================================================
 FUNCTION    msg_q_flush
 
 DESCRIPTION