pixys/interfaces: Add basic USB HAL that reports no status change

Change-Id: I38bfe869f9b1b66db0e13249f65e438878d06eff

Author: intervigilium

usb/1.0-basic/Android.bp

@@ -0,0 +1,32 @@
+//
+// Copyright (C) 2017-2018 The LineageOS 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.
+
+cc_binary {
+    name: "[email protected]",
+    relative_install_path: "hw",
+    init_rc: ["[email protected]"],
+    srcs: ["service.cpp", "Usb.cpp"],
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "libhardware",
+        "[email protected]",
+    ],
+    proprietary: true,
+}

usb/1.0-basic/Usb.cpp

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2017-2018 The LineageOS 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.
+ */
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "Usb.h"
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace V1_0 {
+namespace implementation {
+
+Return<void> Usb::switchRole(const hidl_string &portName __unused,
+                             const PortRole &newRole __unused) {
+    LOG(ERROR) << __func__ << ": Not supported";
+    return Void();
+}
+
+Return<void> Usb::queryPortStatus() {
+    hidl_vec<PortStatus> currentPortStatus;
+    currentPortStatus.resize(1);
+
+    currentPortStatus[0].portName = "otg_default";
+    currentPortStatus[0].currentDataRole = PortDataRole::DEVICE;
+    currentPortStatus[0].currentPowerRole = PortPowerRole::SINK;
+    currentPortStatus[0].currentMode = PortMode::UFP;
+    currentPortStatus[0].canChangeMode = false;
+    currentPortStatus[0].canChangeDataRole = false;
+    currentPortStatus[0].canChangePowerRole = false;
+    currentPortStatus[0].supportedModes = PortMode::UFP;
+
+    pthread_mutex_lock(&mLock);
+    if (mCallback != NULL) {
+        Return<void> ret =
+                mCallback->notifyPortStatusChange(currentPortStatus, Status::SUCCESS);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "queryPortStatus error " << ret.description();
+        }
+    } else {
+        LOG(INFO) << "Notifying userspace skipped. Callback is NULL";
+    }
+    pthread_mutex_unlock(&mLock);
+
+    return Void();
+}
+
+Return<void> Usb::setCallback(const sp<IUsbCallback> &callback) {
+    pthread_mutex_lock(&mLock);
+
+    mCallback = callback;
+    LOG(INFO) << "registering callback";
+
+    pthread_mutex_unlock(&mLock);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android

usb/1.0-basic/Usb.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2017-2018 The LineageOS 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.
+ */
+
+#ifndef ANDROID_HARDWARE_USB_V1_0_USB_H
+#define ANDROID_HARDWARE_USB_V1_0_USB_H
+
+#include <android/hardware/usb/1.0/IUsb.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <utils/Log.h>
+
+#ifdef LOG_TAG
+#undef LOG_TAG
+#endif
+
+#define LOG_TAG "[email protected]"
+#define UEVENT_MSG_LEN 2048
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::usb::V1_0::IUsb;
+using ::android::hardware::usb::V1_0::IUsbCallback;
+using ::android::hardware::usb::V1_0::PortRole;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+struct Usb : public IUsb {
+    Return<void> switchRole(const hidl_string& portName, const PortRole& role) override;
+    Return<void> setCallback(const sp<IUsbCallback>& callback) override;
+    Return<void> queryPortStatus() override;
+
+    sp<IUsbCallback> mCallback;
+    pthread_mutex_t mLock = PTHREAD_MUTEX_INITIALIZER;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_USB_V1_0_USB_H

usb/1.0-basic/[email protected]

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+service usb-hal-1-0 /vendor/bin/hw/[email protected]
+    class hal
+    user system
+    group system

usb/1.0-basic/service.cpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017-2018 The LineageOS 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.
+ */
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+#include "Usb.h"
+
+using android::sp;
+
+// libhwbinder:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::usb::V1_0::IUsb;
+using android::hardware::usb::V1_0::implementation::Usb;
+
+int main() {
+    android::sp<IUsb> service = new Usb();
+
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+    android::status_t status = service->registerAsService();
+
+    if (status != android::OK) {
+        LOG(ERROR) << "Cannot register USB HAL service";
+        return 1;
+    }
+
+    LOG(INFO) << "USB HAL Ready.";
+    joinRpcThreadpool();
+    // Under normal cases, execution will not reach this line.
+    LOG(ERROR) << "USB HAL failed to join thread pool.";
+    return 1;
+}