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/**
* Copyright © 2019 IBM Corporation
*
* 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 "sysfs.hpp"
#include <fstream>
#include <iostream>
#include <string>
namespace fs = std::experimental::filesystem;
namespace phosphor
{
namespace led
{
constexpr char SysfsLed::BRIGHTNESS[];
constexpr char SysfsLed::MAX_BRIGHTNESS[];
constexpr char SysfsLed::TRIGGER[];
constexpr char SysfsLed::DELAY_ON[];
constexpr char SysfsLed::DELAY_OFF[];
template <typename T>
T get_sysfs_attr(const fs::path& path);
template <>
std::string get_sysfs_attr(const fs::path& path)
{
std::string content;
std::ifstream file(path);
file >> content;
return content;
}
template <>
unsigned long get_sysfs_attr(const fs::path& path)
{
std::string content = get_sysfs_attr<std::string>(std::move(path));
return std::strtoul(content.c_str(), nullptr, 0);
}
template <typename T>
void set_sysfs_attr(const fs::path& path, const T& value)
{
std::ofstream file(path);
file << value;
}
unsigned long SysfsLed::getBrightness()
{
return get_sysfs_attr<unsigned long>(root / BRIGHTNESS);
}
void SysfsLed::setBrightness(unsigned long brightness)
{
set_sysfs_attr<unsigned long>(root / BRIGHTNESS, brightness);
}
unsigned long SysfsLed::getMaxBrightness()
{
return get_sysfs_attr<unsigned long>(root / MAX_BRIGHTNESS);
}
std::string SysfsLed::getTrigger()
{
return get_sysfs_attr<std::string>(root / TRIGGER);
}
void SysfsLed::setTrigger(const std::string& trigger)
{
set_sysfs_attr<std::string>(root / TRIGGER, trigger);
}
unsigned long SysfsLed::getDelayOn()
{
return get_sysfs_attr<unsigned long>(root / DELAY_ON);
}
void SysfsLed::setDelayOn(unsigned long ms)
{
set_sysfs_attr<unsigned long>(root / DELAY_ON, ms);
}
unsigned long SysfsLed::getDelayOff()
{
return get_sysfs_attr<unsigned long>(root / DELAY_OFF);
}
void SysfsLed::setDelayOff(unsigned long ms)
{
set_sysfs_attr<unsigned long>(root / DELAY_OFF, ms);
}
} // namespace led
} // namespace phosphor
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