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 <pixelusb/UsbOverheatEvent.h> 23 #include <utils/Log.h> 24 #include <UsbDataSessionMonitor.h> 25 26 #define UEVENT_MSG_LEN 2048 27 // The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd. 28 // The -partner directory would not be created until this is done. 29 // Having a margin of ~3 secs for the directory and other related bookeeping 30 // structures created and uvent fired. 31 #define PORT_TYPE_TIMEOUT 8 32 33 namespace aidl { 34 namespace android { 35 namespace hardware { 36 namespace usb { 37 38 using ::aidl::android::hardware::usb::IUsbCallback; 39 using ::aidl::android::hardware::usb::PortRole; 40 using ::android::base::ReadFileToString; 41 using ::android::base::WriteStringToFile; 42 using ::android::hardware::google::pixel::usb::UsbOverheatEvent; 43 using ::android::hardware::google::pixel::usb::ZoneInfo; 44 using ::android::hardware::thermal::V2_0::TemperatureType; 45 using ::android::hardware::thermal::V2_0::ThrottlingSeverity; 46 using ::android::sp; 47 using ::ndk::ScopedAStatus; 48 using ::std::shared_ptr; 49 using ::std::string; 50 51 constexpr char kGadgetName[] = "11110000.dwc3"; 52 #define NEW_UDC_PATH "/sys/devices/platform/11110000.usb/" 53 54 #define ID_PATH NEW_UDC_PATH "dwc3_exynos_otg_id" 55 #define VBUS_PATH NEW_UDC_PATH "dwc3_exynos_otg_b_sess" 56 #define USB_DATA_PATH NEW_UDC_PATH "usb_data_enabled" 57 58 #define ROLE_SWAP_RETRY_MS 700 59 60 struct Usb : public BnUsb { 61 Usb(); 62 63 ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName, 64 bool in_enable, int64_t in_transactionId) override; 65 ScopedAStatus queryPortStatus(int64_t in_transactionId) override; 66 ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override; 67 ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role, 68 int64_t in_transactionId) override; 69 ScopedAStatus enableUsbData(const string& in_portName, bool in_enable, 70 int64_t in_transactionId) override; 71 ScopedAStatus enableUsbDataWhileDocked(const string& in_portName, 72 int64_t in_transactionId) override; 73 ScopedAStatus limitPowerTransfer(const string& in_portName, bool in_limit, 74 int64_t in_transactionId) override; 75 ScopedAStatus resetUsbPort(const string& in_portName, int64_t in_transactionId) override; 76 77 std::shared_ptr<::aidl::android::hardware::usb::IUsbCallback> mCallback; 78 // Protects mCallback variable 79 pthread_mutex_t mLock; 80 // Protects roleSwitch operation 81 pthread_mutex_t mRoleSwitchLock; 82 // Threads waiting for the partner to come back wait here 83 pthread_cond_t mPartnerCV; 84 // lock protecting mPartnerCV 85 pthread_mutex_t mPartnerLock; 86 // Variable to signal partner coming back online after type switch 87 bool mPartnerUp; 88 89 // Report usb data session event and data incompliance warnings 90 UsbDataSessionMonitor mUsbDataSessionMonitor; 91 // Usb Overheat object for push suez event 92 UsbOverheatEvent mOverheat; 93 // Temperature when connected 94 float mPluggedTemperatureCelsius; 95 // Usb Data status 96 bool mUsbDataEnabled; 97 int getI2cBusNumber(); 98 std::string_view getI2cClientPath(); 99 100 private: 101 pthread_t mPoll; 102 int mI2cBusNumber; 103 std::string mI2cClientPath; 104 }; 105 106 } // namespace usb 107 } // namespace hardware 108 } // namespace android 109 } // aidl 110