1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HARDWARE_USB_GADGET_V1_1_USBGADGET_H 18 #define ANDROID_HARDWARE_USB_GADGET_V1_1_USBGADGET_H 19 20 #include <UsbGadgetCommon.h> 21 #include <android-base/file.h> 22 #include <android-base/properties.h> 23 #include <android-base/unique_fd.h> 24 #include <android/hardware/usb/gadget/1.1/IUsbGadget.h> 25 #include <hidl/MQDescriptor.h> 26 #include <hidl/Status.h> 27 #include <sys/epoll.h> 28 #include <sys/eventfd.h> 29 #include <utils/Log.h> 30 #include <chrono> 31 #include <condition_variable> 32 #include <mutex> 33 #include <string> 34 #include <thread> 35 36 namespace android { 37 namespace hardware { 38 namespace usb { 39 namespace gadget { 40 namespace V1_1 { 41 namespace implementation { 42 43 using ::android::sp; 44 using ::android::base::GetProperty; 45 using ::android::base::SetProperty; 46 using ::android::base::unique_fd; 47 using ::android::base::WriteStringToFile; 48 using ::android::hardware::hidl_array; 49 using ::android::hardware::hidl_memory; 50 using ::android::hardware::hidl_string; 51 using ::android::hardware::hidl_vec; 52 using ::android::hardware::Return; 53 using ::android::hardware::Void; 54 using ::android::hardware::usb::gadget::addAdb; 55 using ::android::hardware::usb::gadget::addEpollFd; 56 using ::android::hardware::usb::gadget::getVendorFunctions; 57 using ::android::hardware::usb::gadget::kDebug; 58 using ::android::hardware::usb::gadget::kDisconnectWaitUs; 59 using ::android::hardware::usb::gadget::linkFunction; 60 using ::android::hardware::usb::gadget::MonitorFfs; 61 using ::android::hardware::usb::gadget::resetGadget; 62 using ::android::hardware::usb::gadget::setVidPid; 63 using ::android::hardware::usb::gadget::unlinkFunctions; 64 using ::std::string; 65 66 constexpr char kGadgetName[] = "a600000.dwc3"; 67 static MonitorFfs monitorFfs(kGadgetName); 68 69 struct UsbGadget : public IUsbGadget { 70 UsbGadget(); 71 72 // Makes sure that only one request is processed at a time. 73 std::mutex mLockSetCurrentFunction; 74 uint64_t mCurrentUsbFunctions; 75 bool mCurrentUsbFunctionsApplied; 76 77 Return<void> setCurrentUsbFunctions(uint64_t functions, 78 const sp<V1_0::IUsbGadgetCallback>& callback, 79 uint64_t timeout) override; 80 81 Return<void> getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback>& callback) override; 82 83 Return<Status> reset() override; 84 85 private: 86 V1_0::Status tearDownGadget(); 87 V1_0::Status setupFunctions(uint64_t functions, const sp<V1_0::IUsbGadgetCallback>& callback, 88 uint64_t timeout); 89 }; 90 91 } // namespace implementation 92 } // namespace V1_1 93 } // namespace gadget 94 } // namespace usb 95 } // namespace hardware 96 } // namespace android 97 98 #endif // ANDROID_HARDWARE_USB_V1_1_USBGADGET_H 99