drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/therm.h

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