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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_LED_DRIVER_SYSFS_H_
#define SYSTEM_PERIPHERALMANAGER_DAEMON_LED_DRIVER_SYSFS_H_
#include <stdint.h>
#include <base/macros.h>
#include "led_driver.h"
namespace android {
class LedDriverSysfs : public LedDriverInterface {
public:
explicit LedDriverSysfs(std::string* prefix);
~LedDriverSysfs();
static std::string Compat() { return "LEDSYSFS"; }
bool Init(const std::string& name) override;
bool SetBrightness(uint32_t val) override;
bool GetBrightness(uint32_t* val) override;
bool GetMaxBrightness(uint32_t* val) override;
private:
bool ReadFromFile(const std::string& file, std::string* value);
bool WriteToFile(const std::string& file, const std::string& value);
int fd_;
// Used for unit test only.
// Ownership is in the test.
std::string* prefix_;
DISALLOW_COPY_AND_ASSIGN(LedDriverSysfs);
};
} // namespace android
#endif // SYSTEM_PERIPHERALMANAGER_DAEMON_LED_DRIVER_SYSFS_H_
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