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_2_USBGADGET_H 18 #define ANDROID_HARDWARE_USB_GADGET_V1_2_USBGADGET_H 19 20 #include <UsbGadgetCommon.h> 21 #include <android-base/file.h> 22 #include <android-base/properties.h> 23 #include <android-base/strings.h> 24 #include <android-base/unique_fd.h> 25 #include <android/hardware/usb/gadget/1.2/IUsbGadget.h> 26 #include <android/hardware/usb/gadget/1.2/types.h> 27 #include <hidl/MQDescriptor.h> 28 #include <hidl/Status.h> 29 #include <sys/epoll.h> 30 #include <sys/eventfd.h> 31 #include <utils/Log.h> 32 #include <chrono> 33 #include <condition_variable> 34 #include <mutex> 35 #include <string> 36 #include <thread> 37 38 namespace android { 39 namespace hardware { 40 namespace usb { 41 namespace gadget { 42 namespace V1_2 { 43 namespace implementation { 44 45 using ::android::sp; 46 using ::android::base::GetProperty; 47 using ::android::base::ReadFileToString; 48 using ::android::base::SetProperty; 49 using ::android::base::Trim; 50 using ::android::base::unique_fd; 51 using ::android::base::WriteStringToFile; 52 using ::android::hardware::hidl_array; 53 using ::android::hardware::hidl_memory; 54 using ::android::hardware::hidl_string; 55 using ::android::hardware::hidl_vec; 56 using ::android::hardware::Return; 57 using ::android::hardware::Void; 58 using ::android::hardware::usb::gadget::addAdb; 59 using ::android::hardware::usb::gadget::addEpollFd; 60 using ::android::hardware::usb::gadget::getVendorFunctions; 61 using ::android::hardware::usb::gadget::kDebug; 62 using ::android::hardware::usb::gadget::kDisconnectWaitUs; 63 using ::android::hardware::usb::gadget::linkFunction; 64 using ::android::hardware::usb::gadget::MonitorFfs; 65 using ::android::hardware::usb::gadget::resetGadget; 66 using ::android::hardware::usb::gadget::setVidPid; 67 using ::android::hardware::usb::gadget::unlinkFunctions; 68 using ::std::string; 69 70 constexpr char kGadgetName[] = "11110000.usb"; 71 static MonitorFfs monitorFfs(kGadgetName); 72 73 #define UDC_PATH "/sys/class/udc/11110000.usb/" 74 #define SPEED_PATH UDC_PATH "current_speed" 75 76 struct UsbGadget : public IUsbGadget { 77 UsbGadget(); 78 79 // Makes sure that only one request is processed at a time. 80 std::mutex mLockSetCurrentFunction; 81 uint64_t mCurrentUsbFunctions; 82 bool mCurrentUsbFunctionsApplied; 83 UsbSpeed mUsbSpeed; 84 85 Return<void> setCurrentUsbFunctions(uint64_t functions, 86 const sp<V1_0::IUsbGadgetCallback>& callback, 87 uint64_t timeout) override; 88 89 Return<void> getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback>& callback) override; 90 91 Return<Status> reset() override; 92 93 Return<void> getUsbSpeed(const sp<V1_2::IUsbGadgetCallback>& callback) override; 94 95 private: 96 V1_0::Status tearDownGadget(); 97 V1_0::Status setupFunctions(uint64_t functions, const sp<V1_0::IUsbGadgetCallback>& callback, 98 uint64_t timeout); 99 }; 100 101 } // namespace implementation 102 } // namespace V1_2 103 } // namespace gadget 104 } // namespace usb 105 } // namespace hardware 106 } // namespace android 107 108 #endif // ANDROID_HARDWARE_USB_V1_2_USBGADGET_H 109