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#pragma once
#include <fstream>
#include <experimental/filesystem>
#include "config.h"
namespace open_power
{
namespace occ
{
namespace fs = std::experimental::filesystem;
/** @class Device
* @brief Binds and unbinds the OCC driver upon request
*/
class Device
{
public:
Device() = delete;
~Device() = default;
Device(const Device&) = delete;
Device& operator=(const Device&) = delete;
Device(Device&&) = default;
Device& operator=(Device&&) = default;
/** @brief Constructs the Device object
*
* @param[in] name - OCC instance name
*/
Device(const std::string& name) :
config(name + '-' + "dev0")
{
// Nothing to do here
}
/** @brief Binds device to the OCC driver */
inline void bind()
{
return write(bindPath, config);
}
/** @brief Un-binds device from the OCC driver */
inline void unBind()
{
return write(unBindPath, config);
}
private:
/** @brief Config value to be used to do bind and unbind */
const std::string config;
/** @brief To bind the device to the OCC driver, do:
* Write occ<#>-dev0 to: /sys/bus/platform/drivers/occ-hwmon/bind
*/
static fs::path bindPath;
/** @brief To un-bind the device from the OCC driver, do:
* Write occ<#>-dev0 to: /sys/bus/platform/drivers/occ-hwmon/unbind
*/
static fs::path unBindPath;
/** @brief file writer to achieve bind and unbind
*
* @param[in] filename - Name of file to be written
* @param[in] data - Data to be written to
* @return - None
*/
void write(const fs::path& fileName, const std::string& data)
{
// If there is an error, move the exception all the way up
std::ofstream file(fileName, std::ios::out);
file << data;
file.close();
return;
}
};
} // namespace occ
} // namespace open_power
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