de0fc9d220
Write pin assignment, hpd, and orientation from type-c class to drmdp platform device attributes using epoll when displayport driver binds to device, and determine whether or not to shut down epoll on displayport driver change uevents. Test: manual testing with form factor device Bug: 260915739 Change-Id: Iec9fc76166481a4611bb2fc023aea044b497f2c0
121 lines
4.4 KiB
C++
121 lines
4.4 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <android-base/file.h>
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#include <aidl/android/hardware/usb/BnUsb.h>
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#include <aidl/android/hardware/usb/BnUsbCallback.h>
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#include <pixelusb/UsbOverheatEvent.h>
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#include <sys/eventfd.h>
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#include <utils/Log.h>
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#define UEVENT_MSG_LEN 2048
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// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
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// The -partner directory would not be created until this is done.
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// Having a margin of ~3 secs for the directory and other related bookeeping
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// structures created and uvent fired.
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#define PORT_TYPE_TIMEOUT 8
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace usb {
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using ::aidl::android::hardware::usb::IUsbCallback;
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using ::aidl::android::hardware::usb::PortRole;
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using ::android::base::ReadFileToString;
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using ::android::base::WriteStringToFile;
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using ::android::base::unique_fd;
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using ::android::hardware::google::pixel::usb::UsbOverheatEvent;
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using ::android::hardware::google::pixel::usb::ZoneInfo;
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using ::android::hardware::thermal::V2_0::TemperatureType;
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using ::android::hardware::thermal::V2_0::ThrottlingSeverity;
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using ::android::sp;
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using ::ndk::ScopedAStatus;
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using ::std::shared_ptr;
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using ::std::string;
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using ::std::thread;
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constexpr char kGadgetName[] = "11210000.dwc3";
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#define NEW_UDC_PATH "/sys/devices/platform/11210000.usb/"
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#define ID_PATH NEW_UDC_PATH "dwc3_exynos_otg_id"
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#define VBUS_PATH NEW_UDC_PATH "dwc3_exynos_otg_b_sess"
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#define USB_DATA_PATH NEW_UDC_PATH "usb_data_enabled"
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#define DISPLAYPORT_SHUTDOWN_CLEAR 0
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#define DISPLAYPORT_SHUTDOWN_SET 1
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struct Usb : public BnUsb {
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Usb();
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ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName,
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bool in_enable, int64_t in_transactionId) override;
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ScopedAStatus queryPortStatus(int64_t in_transactionId) override;
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ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override;
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ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role,
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int64_t in_transactionId) override;
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ScopedAStatus enableUsbData(const string& in_portName, bool in_enable,
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int64_t in_transactionId) override;
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ScopedAStatus enableUsbDataWhileDocked(const string& in_portName,
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int64_t in_transactionId) override;
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ScopedAStatus limitPowerTransfer(const string& in_portName, bool in_limit,
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int64_t in_transactionId) override;
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ScopedAStatus resetUsbPort(const string& in_portName, int64_t in_transactionId) override;
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Status getDisplayPortUsbPathHelper(string *path);
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Status writeDisplayPortAttributeOverride(string attribute, string value);
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Status writeDisplayPortAttribute(string attribute, string usb_path);
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bool determineDisplayPortRetry(string linkPath, string hpdPath);
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void setupDisplayPortPoll();
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void shutdownDisplayPortPollHelper();
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void shutdownDisplayPortPoll();
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std::shared_ptr<::aidl::android::hardware::usb::IUsbCallback> mCallback;
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// Protects mCallback variable
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pthread_mutex_t mLock;
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// Protects roleSwitch operation
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pthread_mutex_t mRoleSwitchLock;
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// Threads waiting for the partner to come back wait here
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pthread_cond_t mPartnerCV;
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// lock protecting mPartnerCV
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pthread_mutex_t mPartnerLock;
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// Variable to signal partner coming back online after type switch
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bool mPartnerUp;
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// Usb Overheat object for push suez event
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UsbOverheatEvent mOverheat;
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// Temperature when connected
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float mPluggedTemperatureCelsius;
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// Usb Data status
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bool mUsbDataEnabled;
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// Protects writeDisplayPortToExynos(), setupDisplayPortPoll(), and
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// shutdownDisplayPortPoll()
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pthread_mutex_t mDisplayPortLock;
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// eventfd to signal DisplayPort thread
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int mDisplayPortShutdown;
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private:
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pthread_t mPoll;
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pthread_t mDisplayPortPoll;
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pthread_t mDisplayPortShutdownHelper;
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};
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} // namespace usb
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} // namespace hardware
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} // namespace android
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} // aidl
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