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