Migrate IUsbGadget to AIDL
This change migrates android.hardware.usb.IUsbGadget to AIDL and
adds the default implementation.
Compared to the HIDL interface, AIDL based interface adds
transactionId argument to each of the interface method which
is used while invoking the corresponding callback.
Bug: 218791946
Test: USB function switch success and AIDL service is running.
Signed-off-by: Ricky Niu <rickyniu@google.com>
Change-Id: Ie05354660f13c8047e2c1712bf373e8699874d28
diff --git a/usb/gadget/aidl/default/UsbGadget.h b/usb/gadget/aidl/default/UsbGadget.h
new file mode 100644
index 0000000..e119419
--- /dev/null
+++ b/usb/gadget/aidl/default/UsbGadget.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/unique_fd.h>
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+#include <aidl/android/hardware/usb/gadget/BnUsbGadget.h>
+#include <aidl/android/hardware/usb/gadget/BnUsbGadgetCallback.h>
+#include <aidl/android/hardware/usb/gadget/GadgetFunction.h>
+#include <aidl/android/hardware/usb/gadget/IUsbGadget.h>
+#include <aidl/android/hardware/usb/gadget/IUsbGadgetCallback.h>
+#include <sched.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <utils/Log.h>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+#include <string>
+#include <thread>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+
+using ::aidl::android::hardware::usb::gadget::GadgetFunction;
+using ::aidl::android::hardware::usb::gadget::IUsbGadgetCallback;
+using ::aidl::android::hardware::usb::gadget::IUsbGadget;
+using ::aidl::android::hardware::usb::gadget::Status;
+using ::aidl::android::hardware::usb::gadget::UsbSpeed;
+using ::android::base::GetProperty;
+using ::android::base::SetProperty;
+using ::android::base::ParseUint;
+using ::android::base::unique_fd;
+using ::android::base::ReadFileToString;
+using ::android::base::Trim;
+using ::android::base::WriteStringToFile;
+using ::ndk::ScopedAStatus;
+using ::std::shared_ptr;
+using ::std::string;
+
+constexpr char kGadgetName[] = "11110000.dwc3";
+constexpr char kProcInterruptsPath[] = "/proc/interrupts";
+constexpr char kProcIrqPath[] = "/proc/irq/";
+constexpr char kSmpAffinityList[] = "/smp_affinity_list";
+#ifndef UDC_PATH
+#define UDC_PATH "/sys/class/udc/11110000.dwc3/"
+#endif
+//static MonitorFfs monitorFfs(kGadgetName);
+
+#define SPEED_PATH UDC_PATH "current_speed"
+
+#define BIG_CORE "6"
+#define MEDIUM_CORE "4"
+
+#define POWER_SUPPLY_PATH "/sys/class/power_supply/usb/"
+#define USB_PORT0_PATH "/sys/class/typec/port0/"
+
+#define CURRENT_MAX_PATH POWER_SUPPLY_PATH "current_max"
+#define CURRENT_USB_TYPE_PATH POWER_SUPPLY_PATH "usb_type"
+#define CURRENT_USB_POWER_OPERATION_MODE_PATH USB_PORT0_PATH "power_operation_mode"
+
+struct UsbGadget : public BnUsbGadget {
+ UsbGadget();
+
+ // Makes sure that only one request is processed at a time.
+ std::mutex mLockSetCurrentFunction;
+ std::string mGadgetIrqPath;
+ long mCurrentUsbFunctions;
+ bool mCurrentUsbFunctionsApplied;
+ UsbSpeed mUsbSpeed;
+
+ ScopedAStatus setCurrentUsbFunctions(long functions,
+ const shared_ptr<IUsbGadgetCallback> &callback,
+ int64_t timeout, int64_t in_transactionId) override;
+
+ ScopedAStatus getCurrentUsbFunctions(const shared_ptr<IUsbGadgetCallback> &callback,
+ int64_t in_transactionId) override;
+
+ ScopedAStatus reset() override;
+
+ ScopedAStatus getUsbSpeed(const shared_ptr<IUsbGadgetCallback> &callback,
+ int64_t in_transactionId) override;
+
+ private:
+ Status tearDownGadget();
+ Status getUsbGadgetIrqPath();
+ Status setupFunctions(long functions, const shared_ptr<IUsbGadgetCallback> &callback,
+ uint64_t timeout, int64_t in_transactionId);
+};
+
+} // namespace gadget
+} // namespace usb
+} // namespace hardware
+} // namespace android
+} // aidl