162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __LOONGSON_HWMON_H_ 362306a36Sopenharmony_ci#define __LOONGSON_HWMON_H_ 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/types.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#define MIN_TEMP 0 862306a36Sopenharmony_ci#define MAX_TEMP 255 962306a36Sopenharmony_ci#define NOT_VALID_TEMP 999 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_citypedef int (*get_temp_fun)(int); 1262306a36Sopenharmony_ciextern int loongson3_cpu_temp(int); 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci/* 0:Max speed, 1:Manual, 2:Auto */ 1562306a36Sopenharmony_cienum fan_control_mode { 1662306a36Sopenharmony_ci FAN_FULL_MODE = 0, 1762306a36Sopenharmony_ci FAN_MANUAL_MODE = 1, 1862306a36Sopenharmony_ci FAN_AUTO_MODE = 2, 1962306a36Sopenharmony_ci FAN_MODE_END 2062306a36Sopenharmony_ci}; 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_cistruct temp_range { 2362306a36Sopenharmony_ci u8 low; 2462306a36Sopenharmony_ci u8 high; 2562306a36Sopenharmony_ci u8 level; 2662306a36Sopenharmony_ci}; 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci#define CONSTANT_SPEED_POLICY 0 /* at constant speed */ 2962306a36Sopenharmony_ci#define STEP_SPEED_POLICY 1 /* use up/down arrays to describe policy */ 3062306a36Sopenharmony_ci#define KERNEL_HELPER_POLICY 2 /* kernel as a helper to fan control */ 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci#define MAX_STEP_NUM 16 3362306a36Sopenharmony_ci#define MAX_FAN_LEVEL 255 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci/* loongson_fan_policy works when fan work at FAN_AUTO_MODE */ 3662306a36Sopenharmony_cistruct loongson_fan_policy { 3762306a36Sopenharmony_ci u8 type; 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci /* percent only used when type is CONSTANT_SPEED_POLICY */ 4062306a36Sopenharmony_ci u8 percent; 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ci /* period between two check. (Unit: S) */ 4362306a36Sopenharmony_ci u8 adjust_period; 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ci /* fan adjust usually depend on a temprature input */ 4662306a36Sopenharmony_ci get_temp_fun depend_temp; 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci /* up_step/down_step used when type is STEP_SPEED_POLICY */ 4962306a36Sopenharmony_ci u8 up_step_num; 5062306a36Sopenharmony_ci u8 down_step_num; 5162306a36Sopenharmony_ci struct temp_range up_step[MAX_STEP_NUM]; 5262306a36Sopenharmony_ci struct temp_range down_step[MAX_STEP_NUM]; 5362306a36Sopenharmony_ci struct delayed_work work; 5462306a36Sopenharmony_ci}; 5562306a36Sopenharmony_ci 5662306a36Sopenharmony_ci#endif /* __LOONGSON_HWMON_H_*/ 57