1 /* 2 * Copyright (C) 2021 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 #pragma once 18 19 #include <android-base/file.h> 20 #include <aidl/android/hardware/usb/BnUsb.h> 21 #include <aidl/android/hardware/usb/BnUsbCallback.h> 22 #include <utils/Log.h> 23 24 #define UEVENT_MSG_LEN 2048 25 #define UEVENT_MAX_EVENTS 64 26 // The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd. 27 // The -partner directory would not be created until this is done. 28 // Having a margin of ~3 secs for the directory and other related bookeeping 29 // structures created and uvent fired. 30 #define PORT_TYPE_TIMEOUT 8 31 32 namespace aidl { 33 namespace android { 34 namespace hardware { 35 namespace usb { 36 37 using ::aidl::android::hardware::usb::IUsbCallback; 38 using ::aidl::android::hardware::usb::PortRole; 39 using ::android::base::ReadFileToString; 40 using ::android::base::WriteStringToFile; 41 using ::android::sp; 42 using ::ndk::ScopedAStatus; 43 using ::std::shared_ptr; 44 using ::std::string; 45 46 struct Usb : public BnUsb { 47 Usb(); 48 49 ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName, 50 bool in_enable, int64_t in_transactionId) override; 51 ScopedAStatus queryPortStatus(int64_t in_transactionId) override; 52 ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override; 53 ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role, 54 int64_t in_transactionId) override; 55 ScopedAStatus enableUsbData(const string& in_portName, bool in_enable, 56 int64_t in_transactionId) override; 57 ScopedAStatus enableUsbDataWhileDocked(const string& in_portName, 58 int64_t in_transactionId) override; 59 ScopedAStatus limitPowerTransfer(const std::string& in_portName, bool in_limit, 60 int64_t in_transactionId)override; 61 ScopedAStatus resetUsbPort(const std::string& in_portName, 62 int64_t in_transactionId)override; 63 64 shared_ptr<IUsbCallback> mCallback; 65 // Protects mCallback variable 66 pthread_mutex_t mLock; 67 // Protects roleSwitch operation 68 pthread_mutex_t mRoleSwitchLock; 69 // Threads waiting for the partner to come back wait here 70 pthread_cond_t mPartnerCV; 71 // lock protecting mPartnerCV 72 pthread_mutex_t mPartnerLock; 73 // Variable to signal partner coming back online after type switch 74 bool mPartnerUp; 75 private: 76 pthread_t mPoll; 77 }; 78 79 } // namespace usb 80 } // namespace hardware 81 } // namespace android 82 } // aidl 83