7f688ffd28
Indicate to the kernel that the usb gadget is pulled up
by writing to `update_sdp_enum_timeout` sysfs node. Write
to this node will inform the kernel that it can lower the SDP
timeout alarm value which is used to detect an SDP port
vs a DCP.
Bug:356685367
Test: Check `update_sdp_enum_timeout` is written into after usb
gadget is pulled up. Verify that the alarm timeout lowers.
Flag: EXEMPT bugfix
Change-Id: Id3ae7e7a20b236cec6604414a7f81860e868bdd0
(ported from commit d8e2a02998fc1db9be00dab69a213378fb3caede)
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
/*
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* Copyright (C) 2020 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 <android-base/properties.h>
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#include <android-base/unique_fd.h>
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#include <android-base/parseint.h>
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#include <android-base/strings.h>
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#include <aidl/android/hardware/usb/gadget/BnUsbGadget.h>
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#include <aidl/android/hardware/usb/gadget/BnUsbGadgetCallback.h>
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#include <aidl/android/hardware/usb/gadget/GadgetFunction.h>
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#include <aidl/android/hardware/usb/gadget/IUsbGadget.h>
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#include <aidl/android/hardware/usb/gadget/IUsbGadgetCallback.h>
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#include <pixelusb/UsbGadgetAidlCommon.h>
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#include <sched.h>
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#include <sys/epoll.h>
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#include <sys/eventfd.h>
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#include <utils/Log.h>
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#include <chrono>
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#include <condition_variable>
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#include <mutex>
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#include <string>
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#include <thread>
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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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namespace gadget {
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using ::aidl::android::hardware::usb::gadget::GadgetFunction;
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using ::aidl::android::hardware::usb::gadget::IUsbGadgetCallback;
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using ::aidl::android::hardware::usb::gadget::IUsbGadget;
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using ::aidl::android::hardware::usb::gadget::Status;
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using ::aidl::android::hardware::usb::gadget::UsbSpeed;
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using ::android::base::GetProperty;
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using ::android::base::SetProperty;
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using ::android::base::ParseUint;
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using ::android::base::unique_fd;
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using ::android::base::ReadFileToString;
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using ::android::base::Trim;
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using ::android::base::WriteStringToFile;
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using ::android::hardware::google::pixel::usb::addAdb;
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using ::android::hardware::google::pixel::usb::addEpollFd;
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using ::android::hardware::google::pixel::usb::getVendorFunctions;
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using ::android::hardware::google::pixel::usb::kDebug;
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using ::android::hardware::google::pixel::usb::kDisconnectWaitUs;
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using ::android::hardware::google::pixel::usb::linkFunction;
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using ::android::hardware::google::pixel::usb::MonitorFfs;
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using ::android::hardware::google::pixel::usb::resetGadget;
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using ::android::hardware::google::pixel::usb::setVidPid;
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using ::android::hardware::google::pixel::usb::unlinkFunctions;
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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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constexpr char kGadgetName[] = "11210000.dwc3";
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constexpr char kProcInterruptsPath[] = "/proc/interrupts";
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constexpr char kProcIrqPath[] = "/proc/irq/";
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constexpr char kSmpAffinityList[] = "/smp_affinity_list";
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#ifndef UDC_PATH
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#define UDC_PATH "/sys/devices/platform/11210000.usb/11210000.dwc3/udc/11210000.dwc3/"
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#endif
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static MonitorFfs monitorFfs(kGadgetName);
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#define SPEED_PATH UDC_PATH "current_speed"
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#define BIG_CORE "7"
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#define MEDIUM_CORE "4"
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#define POWER_SUPPLY_PATH "/sys/class/power_supply/usb/"
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#define USB_PORT0_PATH "/sys/class/typec/port0/"
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#define CURRENT_MAX_PATH POWER_SUPPLY_PATH "current_max"
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#define CURRENT_USB_TYPE_PATH POWER_SUPPLY_PATH "usb_type"
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#define CURRENT_USB_POWER_OPERATION_MODE_PATH USB_PORT0_PATH "power_operation_mode"
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struct UsbGadget : public BnUsbGadget {
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UsbGadget();
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// Makes sure that only one request is processed at a time.
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std::mutex mLockSetCurrentFunction;
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std::string mGadgetIrqPath;
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long mCurrentUsbFunctions;
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bool mCurrentUsbFunctionsApplied;
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UsbSpeed mUsbSpeed;
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ScopedAStatus setCurrentUsbFunctions(long functions,
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const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t timeout, int64_t in_transactionId) override;
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ScopedAStatus getCurrentUsbFunctions(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) override;
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ScopedAStatus reset(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) override;
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ScopedAStatus getUsbSpeed(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) override;
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ScopedAStatus setVidPid(const char *vid,const char *pid);
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// Indicates to the kernel that the gadget service is ready and the kernel can
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// set SDP timeout to a lower value.
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void updateSdpEnumTimeout();
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std::string mI2cClientPath;
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private:
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Status tearDownGadget();
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Status getUsbGadgetIrqPath();
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Status setupFunctions(long functions, const shared_ptr<IUsbGadgetCallback> &callback,
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uint64_t timeout, int64_t in_transactionId);
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};
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} // namespace gadget
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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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