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56 lines
1.2 KiB
56 lines
1.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __LOONGSON_HWMON_H_ |
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#define __LOONGSON_HWMON_H_ |
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#include <linux/types.h> |
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#define MIN_TEMP 0 |
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#define MAX_TEMP 255 |
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#define NOT_VALID_TEMP 999 |
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typedef int (*get_temp_fun)(int); |
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extern int loongson3_cpu_temp(int); |
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/* 0:Max speed, 1:Manual, 2:Auto */ |
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enum fan_control_mode { |
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FAN_FULL_MODE = 0, |
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FAN_MANUAL_MODE = 1, |
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FAN_AUTO_MODE = 2, |
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FAN_MODE_END |
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}; |
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struct temp_range { |
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u8 low; |
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u8 high; |
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u8 level; |
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}; |
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#define CONSTANT_SPEED_POLICY 0 /* at constant speed */ |
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#define STEP_SPEED_POLICY 1 /* use up/down arrays to describe policy */ |
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#define KERNEL_HELPER_POLICY 2 /* kernel as a helper to fan control */ |
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#define MAX_STEP_NUM 16 |
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#define MAX_FAN_LEVEL 255 |
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/* loongson_fan_policy works when fan work at FAN_AUTO_MODE */ |
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struct loongson_fan_policy { |
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u8 type; |
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/* percent only used when type is CONSTANT_SPEED_POLICY */ |
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u8 percent; |
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/* period between two check. (Unit: S) */ |
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u8 adjust_period; |
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/* fan adjust usually depend on a temprature input */ |
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get_temp_fun depend_temp; |
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/* up_step/down_step used when type is STEP_SPEED_POLICY */ |
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u8 up_step_num; |
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u8 down_step_num; |
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struct temp_range up_step[MAX_STEP_NUM]; |
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struct temp_range down_step[MAX_STEP_NUM]; |
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struct delayed_work work; |
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}; |
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#endif /* __LOONGSON_HWMON_H_*/
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