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/*
* 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_I2C_DRIVER_H_
#define SYSTEM_PERIPHERALMANAGER_DAEMON_I2C_DRIVER_H_
#include <stdint.h>
#include <memory>
#include <string>
#include <base/macros.h>
#include "peripheralmanager/constants.h"
namespace android {
class I2cDriverInterface {
public:
I2cDriverInterface() {}
virtual ~I2cDriverInterface() {}
// TODO(leecam): Init should have generic params.
virtual bool Init(uint32_t bus_id, uint32_t address) = 0;
// Returns 0 on success, errno on errors.
virtual int32_t Read(void* data, uint32_t size, uint32_t* bytes_read) = 0;
virtual int32_t ReadRegByte(uint8_t reg, uint8_t* val) = 0;
virtual int32_t ReadRegWord(uint8_t reg, uint16_t* val) = 0;
virtual int32_t ReadRegBuffer(uint8_t reg,
uint8_t* data,
uint32_t size,
uint32_t* bytes_read) = 0;
virtual int32_t Write(const void* data,
uint32_t size,
uint32_t* bytes_written) = 0;
virtual int32_t WriteRegByte(uint8_t reg, uint8_t val) = 0;
virtual int32_t WriteRegWord(uint8_t reg, uint16_t val) = 0;
virtual int32_t WriteRegBuffer(uint8_t reg,
const uint8_t* data,
uint32_t size,
uint32_t* bytes_written) = 0;
};
class I2cDriverInfoBase {
public:
I2cDriverInfoBase() {}
virtual ~I2cDriverInfoBase() {}
virtual std::string Compat() = 0;
virtual std::unique_ptr<I2cDriverInterface> Probe() = 0;
};
template <class T, class PARAM>
class I2cDriverInfo : public I2cDriverInfoBase {
public:
explicit I2cDriverInfo(PARAM param) : param_(param) {}
~I2cDriverInfo() override {}
std::string Compat() override { return T::Compat(); }
std::unique_ptr<I2cDriverInterface> Probe() override {
return std::unique_ptr<I2cDriverInterface>(new T(param_));
}
private:
PARAM param_;
};
} // namespace android
#endif // SYSTEM_PERIPHERALMANAGER_DAEMON_I2C_DRIVER_H_
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