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 #include <hidl/HidlTransportSupport.h>
26
27 #define PERSISTENT_USB_CONFIG "persist.sys.usb.config"
28
29 using android::base::GetProperty;
30 using android::base::SetProperty;
31 using android::hardware::configureRpcThreadpool;
32 using android::hardware::usb::gadget::V1_0::GadgetFunction;
33 using android::hardware::usb::gadget::V1_0::IUsbGadget;
34 using android::hardware::Return;
35
main(int,char **)36 int main(int /*argc*/, char** /*argv*/) {
37 configureRpcThreadpool(1, true /*callerWillJoin*/);
38
39 android::sp<IUsbGadget> gadget = IUsbGadget::getService();
40 Return<void> ret;
41
42 if (gadget != nullptr) {
43 LOG(INFO) << "Usb HAL found.";
44 std::string function = GetProperty(PERSISTENT_USB_CONFIG, "");
45 if (function == "adb") {
46 LOG(INFO) << "peristent prop is adb";
47 SetProperty("ctl.start", "adbd");
48 ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::ADB),
49 nullptr, 0);
50 } else {
51 LOG(INFO) << "Signal MTP to enable default functions";
52 ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::MTP),
53 nullptr, 0);
54 }
55
56 if (!ret.isOk()) LOG(ERROR) << "Error while invoking usb hal";
57 } else {
58 LOG(INFO) << "Usb HAL not found";
59 }
60 exit(0);
61 }
62