blob: 55132388f999d3737a3670117f90e85b91a27361 [file] [log] [blame]
/*
* Copyright (C) 2018, The Linux Foundation. All rights reserved.
* Not a Contribution.
*
* Copyright (C) 2018 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_USB_GADGET_V1_0_USBGADGET_H
#define ANDROID_HARDWARE_USB_GADGET_V1_0_USBGADGET_H
#include <android-base/file.h>
#include <android-base/properties.h>
#include <android-base/unique_fd.h>
#include <android/hardware/usb/gadget/1.0/IUsbGadget.h>
#include <hidl/MQDescriptor.h>
#include <hidl/Status.h>
#include <sys/epoll.h>
#include <sys/eventfd.h>
#include <thread>
#include <utils/Log.h>
#include <chrono>
#include <condition_variable>
#include <mutex>
namespace android {
namespace hardware {
namespace usb {
namespace gadget {
namespace V1_0 {
namespace implementation {
using ::android::sp;
using ::android::base::GetProperty;
using ::android::base::SetProperty;
using ::android::base::unique_fd;
using ::android::base::WriteStringToFile;
using ::android::base::ReadFileToString;
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 ::std::lock_guard;
using ::std::move;
using ::std::mutex;
using ::std::string;
using ::std::thread;
using ::std::unique_ptr;
using ::std::vector;
using namespace std::chrono_literals;
struct UsbGadget : public IUsbGadget {
UsbGadget();
unique_fd mInotifyFd;
unique_fd mEventFd;
unique_fd mEpollFd;
unique_ptr<thread> mMonitor;
volatile bool mMonitorCreated;
vector<string> mEndpointList;
// protects the CV.
std::mutex mLock;
std::condition_variable mCv;
// Makes sure that only one request is processed at a time.
std::mutex mLockSetCurrentFunction;
uint64_t mCurrentUsbFunctions;
bool mCurrentUsbFunctionsApplied;
Return<void> setCurrentUsbFunctions(uint64_t functions,
const sp<IUsbGadgetCallback>& callback,
uint64_t timeout) override;
Return<void> getCurrentUsbFunctions(
const sp<IUsbGadgetCallback>& callback) override;
private:
Status tearDownGadget();
Status setupFunctions(uint64_t functions,
const sp<IUsbGadgetCallback>& callback,
uint64_t timeout);
};
} // namespace implementation
} // namespace V1_0
} // namespace gadget
} // namespace usb
} // namespace hardware
} // namespace android
#endif // ANDROID_HARDWARE_USB_V1_0_USBGADGET_H