478be308d1
When internal hub is enabled, monitor the downstream ports of the internal hub. Switch back to the root hub once the hub is disabled. Bug: 377782468 Test: manual test Flag: EXEMPT bug fix Change-Id: I6ac7f411d5d58d719e05402a7d7e5f2543fe2062
186 lines
7 KiB
C++
186 lines
7 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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#include <UsbDataSessionMonitor.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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#define DISPLAYPORT_CAPABILITIES_RECEPTACLE_BIT 6
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#define DISPLAYPORT_STATUS_DEBOUNCE_MS 2000
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/*
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* Type-C HAL should wait 2 seconds to reattempt DisplayPort Alt Mode entry to
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* allow the port and port partner to settle Role Swaps.
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*/
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#define DISPLAYPORT_ACTIVATE_DEBOUNCE_MS 2000
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// Number of times the HAL should reattempt to enter DisplayPort Alt Mode
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#define DISPLAYPORT_ACTIVATE_MAX_RETRIES 2
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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 ::android::status_t;
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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_ACTIVE_PATH "/sys/class/typec/port0/port0.0/mode1/active"
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#define LINK_TRAINING_STATUS_UNKNOWN "0"
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#define LINK_TRAINING_STATUS_SUCCESS "1"
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#define LINK_TRAINING_STATUS_FAILURE "2"
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#define LINK_TRAINING_STATUS_FAILURE_SINK "3"
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#define DISPLAYPORT_SHUTDOWN_CLEAR 0
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#define DISPLAYPORT_SHUTDOWN_SET 1
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#define DISPLAYPORT_IRQ_HPD_COUNT_CHECK 3
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#define DISPLAYPORT_POLL_WAIT_MS 100
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#define ROLE_SWAP_RETRY_MS 700
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#define SVID_DISPLAYPORT "ff01"
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#define SVID_THUNDERBOLT "8087"
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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 readDisplayPortAttribute(string attribute, string usb_path, string* value);
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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(bool force);
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status_t handleShellCommand(int in, int out, int err, const char** argv,
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uint32_t argc) override;
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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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// Report usb data session event and data incompliance warnings
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std::unique_ptr<UsbDataSessionMonitor> mUsbDataSessionMonitor;
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bool mIntHubEnabled;
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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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std::string mI2cClientPath;
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// True when mDisplayPortPoll pthread is running
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volatile bool mDisplayPortPollRunning;
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volatile bool mDisplayPortPollStarting;
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pthread_cond_t mDisplayPortCV;
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pthread_mutex_t mDisplayPortCVLock;
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volatile bool mDisplayPortFirstSetupDone;
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// Used to cache the values read from tcpci's irq_hpd_count.
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// Update drm driver when cached value is not the same as the read value.
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uint32_t mIrqHpdCountCache;
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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 mDisplayPortEventPipe;
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/*
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* eventfd to set DisplayPort framework update debounce timer. Debounce timer is necessary for
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* 1) allowing enough time for each sysfs node needed to set HPD high in the drm to populate
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* 2) preventing multiple IRQs that trigger link training failures from continuously
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* sending notifications to the frameworks layer.
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*/
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int mDisplayPortDebounceTimer;
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/*
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* eventfd to monitor whether a connection results in DisplayPort Alt Mode activating.
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*/
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int mDisplayPortActivateTimer;
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/*
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* Indicates whether or not port partner supports DisplayPort, and is used to
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* communicate to the drm when the port partner physically disconnects.
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*/
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bool mPartnerSupportsDisplayPort;
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// Usb hub vendor command settings for JK level tuning
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int mUsbHubVendorCmdValue;
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int mUsbHubVendorCmdIndex;
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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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pthread_t mUsbHost;
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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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