| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| #ifndef SYSTEM_PERIPHERALMANAGER_DAEMON_GPIO_DRIVER_H_ |
| #define SYSTEM_PERIPHERALMANAGER_DAEMON_GPIO_DRIVER_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| #include <string> |
| |
| #include <android-base/unique_fd.h> |
| #include <base/macros.h> |
| #include <peripheralmanager/constants.h> |
| |
| namespace android { |
| |
| // This interface must be implemented by all |
| // Gpio drivers. |
| class GpioDriverInterface { |
| public: |
| GpioDriverInterface() {} |
| virtual ~GpioDriverInterface() {} |
| |
| // TODO(leecam): Init should have generic params. |
| virtual bool Init(uint32_t index) = 0; |
| |
| virtual bool SetValue(bool val) = 0; |
| virtual bool GetValue(bool* val) = 0; |
| virtual bool SetActiveType(GpioActiveType type) = 0; |
| virtual bool SetDirection(GpioDirection direction) = 0; |
| virtual bool SetEdgeType(GpioEdgeType type) = 0; |
| virtual bool GetPollingFd(::android::base::unique_fd* fd) = 0; |
| }; |
| |
| // The following is driver boilerplate. |
| // TODO(leecam): Abstract this into a seperate Driver class. |
| class GpioDriverInfoBase { |
| public: |
| GpioDriverInfoBase() {} |
| virtual ~GpioDriverInfoBase() {} |
| |
| virtual std::string Compat() = 0; |
| virtual std::unique_ptr<GpioDriverInterface> Probe() = 0; |
| }; |
| |
| template <class T, class PARAM> |
| class GpioDriverInfo : public GpioDriverInfoBase { |
| public: |
| GpioDriverInfo(PARAM param) : param_(param) {} |
| ~GpioDriverInfo() override {} |
| |
| std::string Compat() override { return T::Compat(); } |
| |
| std::unique_ptr<GpioDriverInterface> Probe() override { |
| return std::unique_ptr<GpioDriverInterface>(new T(param_)); |
| } |
| |
| private: |
| PARAM param_; |
| }; |
| |
| } // namespace android |
| |
| #endif // SYSTEM_PERIPHERALMANAGER_DAEMON_GPIO_DRIVER_H_ |