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/*
* Copyright (C) 2022 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.
*/
#pragma once
#include <android-base/file.h>
#include <aidl/android/hardware/usb/BnUsb.h>
#include <aidl/android/hardware/usb/BnUsbCallback.h>
#include <utils/Log.h>
#define UEVENT_MSG_LEN 2048
// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
// The -partner directory would not be created until this is done.
// Having a margin of ~3 secs for the directory and other related bookeeping
// structures created and uvent fired.
#define PORT_TYPE_TIMEOUT 8
namespace aidl {
namespace android {
namespace hardware {
namespace usb {
using ::aidl::android::hardware::usb::IUsbCallback;
using ::aidl::android::hardware::usb::PortRole;
using ::android::base::ReadFileToString;
using ::android::base::WriteStringToFile;
using ::android::sp;
using ::ndk::ScopedAStatus;
using ::std::shared_ptr;
using ::std::string;
constexpr char kGadgetName[] = "a600000.dwc3";
#define PULLUP_PATH "/config/usb_gadget/g1/UDC"
#define SOC_PATH "/sys/devices/platform/soc/a600000.ssusb/"
#define USB_DATA_PATH SOC_PATH "usb_data_enabled"
#define USB_POWER_LIMIT_PATH "/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-02/c440000.qcom,spmi:qcom,pm7250b@2:qcom,usb-pdphy@1700/usbpd0/"
#define SINK_CURRENT_LIMIT_PATH USB_POWER_LIMIT_PATH "usb_limit_sink_current"
#define SINK_LIMIT_ENABLE_PATH USB_POWER_LIMIT_PATH "usb_limit_sink_enable"
#define SOURCE_LIMIT_ENABLE_PATH USB_POWER_LIMIT_PATH "usb_limit_source_enable"
struct Usb : public BnUsb {
Usb();
ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName,
bool in_enable, int64_t in_transactionId) override;
ScopedAStatus queryPortStatus(int64_t in_transactionId) override;
ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override;
ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role,
int64_t in_transactionId) override;
ScopedAStatus enableUsbData(const string& in_portName, bool in_enable,
int64_t in_transactionId) override;
ScopedAStatus enableUsbDataWhileDocked(const string& in_portName,
int64_t in_transactionId) override;
ScopedAStatus limitPowerTransfer(const string& in_portName, bool in_limit,
int64_t in_transactionId) override;
ScopedAStatus resetUsbPort(const string& in_portName, int64_t in_transactionId) override;
std::shared_ptr<::aidl::android::hardware::usb::IUsbCallback> mCallback;
// Protects mCallback variable
pthread_mutex_t mLock;
// Protects roleSwitch operation
pthread_mutex_t mRoleSwitchLock;
// Threads waiting for the partner to come back wait here
pthread_cond_t mPartnerCV;
// lock protecting mPartnerCV
pthread_mutex_t mPartnerLock;
// Variable to signal partner coming back online after type switch
bool mPartnerUp;
// Usb Data status
bool mUsbDataEnabled;
private:
pthread_t mPoll;
};
} // namespace usb
} // namespace hardware
} // namespace android
} // aidl
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