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      1 /*	$NetBSD: therm.h,v 1.3 2021/12/18 23:45:33 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 #ifndef __NVBIOS_THERM_H__
      5 #define __NVBIOS_THERM_H__
      6 struct nvbios_therm_threshold {
      7 	u8 temp;
      8 	u8 hysteresis;
      9 };
     10 
     11 struct nvbios_therm_sensor {
     12 	/* diode */
     13 	s16 slope_mult;
     14 	s16 slope_div;
     15 	s16 offset_num;
     16 	s16 offset_den;
     17 	s8 offset_constant;
     18 
     19 	/* thresholds */
     20 	struct nvbios_therm_threshold thrs_fan_boost;
     21 	struct nvbios_therm_threshold thrs_down_clock;
     22 	struct nvbios_therm_threshold thrs_critical;
     23 	struct nvbios_therm_threshold thrs_shutdown;
     24 };
     25 
     26 enum nvbios_therm_fan_type {
     27 	NVBIOS_THERM_FAN_UNK = 0,
     28 	NVBIOS_THERM_FAN_TOGGLE = 1,
     29 	NVBIOS_THERM_FAN_PWM = 2,
     30 };
     31 
     32 /* no vbios have more than 6 */
     33 #define NVKM_TEMP_FAN_TRIP_MAX 10
     34 struct nvbios_therm_trip_point {
     35 	int fan_duty;
     36 	int temp;
     37 	int hysteresis;
     38 };
     39 
     40 enum nvbios_therm_fan_mode {
     41 	NVBIOS_THERM_FAN_TRIP = 0,
     42 	NVBIOS_THERM_FAN_LINEAR = 1,
     43 	NVBIOS_THERM_FAN_OTHER = 2,
     44 };
     45 
     46 struct nvbios_therm_fan {
     47 	enum nvbios_therm_fan_type type;
     48 
     49 	u32 pwm_freq;
     50 
     51 	u8 min_duty;
     52 	u8 max_duty;
     53 
     54 	u16 bump_period;
     55 	u16 slow_down_period;
     56 
     57 	enum nvbios_therm_fan_mode fan_mode;
     58 	struct nvbios_therm_trip_point trip[NVKM_TEMP_FAN_TRIP_MAX];
     59 	u8 nr_fan_trip;
     60 	u8 linear_min_temp;
     61 	u8 linear_max_temp;
     62 };
     63 
     64 enum nvbios_therm_domain {
     65 	NVBIOS_THERM_DOMAIN_CORE,
     66 	NVBIOS_THERM_DOMAIN_AMBIENT,
     67 };
     68 
     69 int
     70 nvbios_therm_sensor_parse(struct nvkm_bios *, enum nvbios_therm_domain,
     71 			  struct nvbios_therm_sensor *);
     72 
     73 int
     74 nvbios_therm_fan_parse(struct nvkm_bios *, struct nvbios_therm_fan *);
     75 #endif
     76