drm/nouveau/bios: parse fan bump/slow periods, and trip points (06afd4e8) · Commits · 戴 / test

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

+16 −0

Original line number	Diff line number	Diff line
		@@ -23,11 +23,27 @@ struct nvbios_therm_sensor {
		struct nvbios_therm_threshold thrs_shutdown;
		};

		/* no vbios have more than 6 */
		#define NOUVEAU_TEMP_FAN_TRIP_MAX 10
		struct nouveau_therm_trip_point {
		int fan_duty;
		int temp;
		int hysteresis;
		};

		struct nvbios_therm_fan {
		u16 pwm_freq;

		u8 min_duty;
		u8 max_duty;

		u16 bump_period;
		u16 slow_down_period;

		struct nouveau_therm_trip_point trip[NOUVEAU_TEMP_FAN_TRIP_MAX];
		u8 nr_fan_trip;
		u8 linear_min_temp;
		u8 linear_max_temp;
		};

		enum nvbios_therm_domain {

+26 −0

Original line number	Diff line number	Diff line
		@@ -155,10 +155,15 @@ int
		nvbios_therm_fan_parse(struct nouveau_bios *bios,
		struct nvbios_therm_fan *fan)
		{
		struct nouveau_therm_trip_point *cur_trip = NULL;
		u8 ver, len, i;
		u16 entry;

		uint8_t duty_lut[] = { 0, 0, 25, 0, 40, 0, 50, 0,
		75, 0, 85, 0, 100, 0, 100, 0 };

		i = 0;
		fan->nr_fan_trip = 0;
		while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) {
		s16 value = nv_ro16(bios, entry + 1);

		@@ -167,9 +172,30 @@ nvbios_therm_fan_parse(struct nouveau_bios *bios,
		fan->min_duty = value & 0xff;
		fan->max_duty = (value & 0xff00) >> 8;
		break;
		case 0x24:
		fan->nr_fan_trip++;
		cur_trip = &fan->trip[fan->nr_fan_trip - 1];
		cur_trip->hysteresis = value & 0xf;
		cur_trip->temp = (value & 0xff0) >> 4;
		cur_trip->fan_duty = duty_lut[(value & 0xf000) >> 12];
		break;
		case 0x25:
		cur_trip = &fan->trip[fan->nr_fan_trip - 1];
		cur_trip->fan_duty = value;
		break;
		case 0x26:
		fan->pwm_freq = value;
		break;
		case 0x3b:
		fan->bump_period = value;
		break;
		case 0x3c:
		fan->slow_down_period = value;
		break;
		case 0x46:
		fan->linear_min_temp = nv_ro08(bios, entry + 1);
		fan->linear_max_temp = nv_ro08(bios, entry + 2);
		break;
		}
		}