1 #pragma once 2 3 #include <fstream> 4 #include <string> 5 6 inline std::string make_sysfs_path(const std::string& path, 7 const std::string& type, 8 const std::string& id, 9 const std::string& entry) 10 { 11 using namespace std::literals; 12 13 return path + "/"s + type + id + "_"s + entry; 14 } 15 16 17 /** @brief Find hwmon instances 18 * 19 * Look for a matching hwmon instance given an 20 * open firmware device path. 21 * 22 * @param[in] ofNode- The open firmware device path. 23 * 24 * @returns[in] - The hwmon instance path or an empty 25 * string if no match is found. 26 */ 27 std::string findHwmon(const std::string& ofNode); 28 29 /** @brief Read an hwmon sysfs value. 30 * 31 * Calls exit(3) with bad status on failure. 32 * 33 * @param[in] root - The hwmon class root. 34 * @param[in] instance - The hwmon instance (ex. hwmon1). 35 * @param[in] type - The hwmon type (ex. temp). 36 * @param[in] id - The hwmon id (ex. 1). 37 * @param[in] sensor - The hwmon sensor (ex. input). 38 * 39 * @returns - The read value. 40 */ 41 int readSysfsWithCallout(const std::string& root, 42 const std::string& instance, 43 const std::string& type, 44 const std::string& id, 45 const std::string& sensor); 46 47 /** @brief Write a hwmon sysfs value 48 * 49 * Calls exit(3) with bad status on failure 50 * 51 * @param[in] value - The value to be written 52 * @param[in] root - The hwmon class root. 53 * @param[in] instance - The hwmon instance (ex. hwmon1). 54 * @param[in] type - The hwmon type (ex. fan). 55 * @param[in] id - The hwmon id (ex. 1). 56 * @param[in] sensor - The hwmon sensor (ex. target). 57 * 58 * @returns - The value written 59 */ 60 uint64_t writeSysfsWithCallout(const uint64_t& value, 61 const std::string& root, 62 const std::string& instance, 63 const std::string& type, 64 const std::string& id, 65 const std::string& sensor); 66 67 // vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4 68