1 /* 2 * Copyright (C) 2018 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 #define LOG_TAG "usbd" 18 19 #include <string> 20 21 #include <android-base/logging.h> 22 #include <android-base/properties.h> 23 #include <android/hardware/usb/gadget/1.0/IUsbGadget.h> 24 25 #define PERSISTENT_USB_CONFIG "persist.sys.usb.config" 26 27 using android::base::GetProperty; 28 using android::base::SetProperty; 29 using android::hardware::usb::gadget::V1_0::GadgetFunction; 30 using android::hardware::usb::gadget::V1_0::IUsbGadget; 31 using android::hardware::Return; 32 33 int main(int /*argc*/, char** /*argv*/) { 34 android::sp<IUsbGadget> gadget = IUsbGadget::getService(); 35 Return<void> ret; 36 37 if (gadget != nullptr) { 38 LOG(INFO) << "Usb HAL found."; 39 std::string function = GetProperty(PERSISTENT_USB_CONFIG, ""); 40 if (function == "adb") { 41 LOG(INFO) << "peristent prop is adb"; 42 SetProperty("ctl.start", "adbd"); 43 ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::ADB), 44 nullptr, 0); 45 } else { 46 LOG(INFO) << "Signal MTP to enable default functions"; 47 ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::MTP), 48 nullptr, 0); 49 } 50 51 if (!ret.isOk()) LOG(ERROR) << "Error while invoking usb hal"; 52 } else { 53 LOG(INFO) << "Usb HAL not found"; 54 } 55 exit(0); 56 } 57
