device_google_gs101/usb/gadget/UsbGadget.h
Badhri Jagan Sridharan 3c97a6bb68 Migrate IUsb implementation to AIDL
This change migrates IUsb implementation to AIDL.
Also, IUsb and IUsbGadget now run in its own processes
to improve stability and isolation.

Bug: 200993386
Bug: 199357330
Change-Id: I02753af4a41916b77ce110f9531504bf8c6a4691
2022-01-22 01:20:15 +00:00

111 lines
3.7 KiB
C++

/*
* Copyright (C) 2020 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 <android-base/properties.h>
#include <android-base/unique_fd.h>
#include <android-base/strings.h>
#include <android/hardware/usb/gadget/1.2/IUsbGadget.h>
#include <android/hardware/usb/gadget/1.2/types.h>
#include <hidl/MQDescriptor.h>
#include <hidl/Status.h>
#include <pixelusb/UsbGadgetCommon.h>
#include <sys/epoll.h>
#include <sys/eventfd.h>
#include <utils/Log.h>
#include <chrono>
#include <condition_variable>
#include <mutex>
#include <string>
#include <thread>
namespace android {
namespace hardware {
namespace usb {
namespace gadget {
namespace V1_2 {
namespace implementation {
using ::android::sp;
using ::android::base::GetProperty;
using ::android::base::SetProperty;
using ::android::base::unique_fd;
using ::android::base::ReadFileToString;
using ::android::base::Trim;
using ::android::base::WriteStringToFile;
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::hardware::google::pixel::usb::addAdb;
using ::android::hardware::google::pixel::usb::addEpollFd;
using ::android::hardware::google::pixel::usb::getVendorFunctions;
using ::android::hardware::google::pixel::usb::kDebug;
using ::android::hardware::google::pixel::usb::kDisconnectWaitUs;
using ::android::hardware::google::pixel::usb::linkFunction;
using ::android::hardware::google::pixel::usb::MonitorFfs;
using ::android::hardware::google::pixel::usb::resetGadget;
using ::android::hardware::google::pixel::usb::setVidPid;
using ::android::hardware::google::pixel::usb::unlinkFunctions;
using ::android::hardware::usb::gadget::V1_0::Status;
using ::android::hardware::usb::gadget::V1_0::IUsbGadgetCallback;
using ::android::hardware::usb::gadget::V1_2::IUsbGadget;
using ::android::hardware::usb::gadget::V1_2::GadgetFunction;
using ::std::string;
constexpr char kGadgetName[] = "11110000.dwc3";
#ifndef UDC_PATH
#define UDC_PATH "/sys/class/udc/11110000.dwc3/"
#endif
static MonitorFfs monitorFfs(kGadgetName);
#define SPEED_PATH UDC_PATH "current_speed"
struct UsbGadget : public IUsbGadget {
UsbGadget();
// Makes sure that only one request is processed at a time.
std::mutex mLockSetCurrentFunction;
uint64_t mCurrentUsbFunctions;
bool mCurrentUsbFunctionsApplied;
UsbSpeed mUsbSpeed;
Return<void> setCurrentUsbFunctions(uint64_t functions,
const sp<V1_0::IUsbGadgetCallback> &callback,
uint64_t timeout) override;
Return<void> getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback> &callback) override;
Return<Status> reset() override;
Return<void> getUsbSpeed(const sp<V1_2::IUsbGadgetCallback> &callback) override;
private:
Status tearDownGadget();
Status setupFunctions(uint64_t functions, const sp<V1_0::IUsbGadgetCallback> &callback,
uint64_t timeout);
};
} // namespace implementation
} // namespace V1_2
} // namespace gadget
} // namespace usb
} // namespace hardware
} // namespace android