| Hongwei Zhang | 90cb34f | 2019-05-29 19:06:33 -0400 | [diff] [blame] | 1 | |
| 2 | /*****************************-*- ********-*-******************************** |
| 3 | * Filename: libpwmtach.h |
| 4 | * Description: Library interface to pwmtach access |
| 5 | * |
| 6 | * Simple interface library for fan control operations |
| 7 | * This file provides interface functions to support pwmtachtool. |
| 8 | * Copyright (C) <2019> <American Megatrends International LLC> |
| 9 | * |
| 10 | *****************************************************************************/ |
| 11 | #ifndef LIBPWMTACH_H |
| 12 | #define LIBPWMTACH_H |
| 13 | |
| 14 | #ifdef __cplusplus |
| 15 | extern "C" { |
| 16 | #endif |
| 17 | |
| 18 | #define PWMTACH_DEV_FILE "/dev/pwmtach" |
| 19 | |
| 20 | /** \file libpwmtach.h |
| 21 | * \brief Public headers for the PWMTACH interface library |
| 22 | * |
| 23 | * This library contains friendly function call interfaces for setting |
| 24 | * fan control operations. |
| 25 | */ |
| 26 | extern int set_fan_speed ( unsigned int dev_id, unsigned char fan_number, unsigned int rpm_value ); |
| 27 | extern int get_fan_speed ( unsigned int dev_id, unsigned char fan_number, unsigned int *rpm_value ); |
| 28 | /************/ |
| 29 | |
| 30 | |
| 31 | /******Pwmtach interface library to set/read pwm/tach by channel basis apart from configure fan table********/ |
| 32 | /*********Directly control pwm dutycycle (1 to 99) instead of RPM***********/ |
| 33 | extern int get_tach_speed ( unsigned int dev_id, unsigned char tach_number, unsigned int *rpm_value ); |
| 34 | //Notice: dutycycle_percentage value should be between 1 to 99. |
| 35 | extern int set_pwm_dutycycle ( unsigned int dev_id, unsigned char pwm_number, unsigned char dutycycle_percentage ); |
| 36 | //Notice: dutycycle_value should be between 0 to 255. |
| 37 | extern int set_pwm_dutycycle_value ( unsigned int dev_id, unsigned char pwm_number, unsigned char dutycycle_value ); |
| 38 | extern int get_pwm_dutycycle ( unsigned int dev_id, unsigned char pwm_number, unsigned char *dutycycle_percentage ); |
| 39 | |
| 40 | /************/ |
| 41 | #ifdef __cplusplus |
| 42 | } |
| 43 | #endif |
| 44 | |
| 45 | #endif |