drm/nouveau/therm: better transitions and debug logging (1a22274b) · Commits · github.com / kvm-riscv / linux

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

+4 −5

Original line number	Diff line number	Diff line
		@@ -4,11 +4,10 @@
		#include <core/device.h>
		#include <core/subdev.h>

		enum nouveau_therm_fan_mode {
		FAN_CONTROL_NONE = 0,
		FAN_CONTROL_MANUAL = 1,
		FAN_CONTROL_AUTO = 2,
		FAN_CONTROL_NR,
		enum nouveau_therm_mode {
		NOUVEAU_THERM_CTRL_NONE = 0,
		NOUVEAU_THERM_CTRL_MANUAL = 1,
		NOUVEAU_THERM_CTRL_AUTO = 2,
		};

		enum nouveau_therm_attr_type {

drivers/gpu/drm/nouveau/core/subdev/therm/base.c

+29 −27

Original line number	Diff line number	Diff line
		@@ -93,24 +93,27 @@ nouveau_therm_update(struct nouveau_therm *therm, int mode)
		priv->mode = mode;

		switch (mode) {
		case FAN_CONTROL_MANUAL:
		duty = priv->fan->percent;
		case NOUVEAU_THERM_CTRL_MANUAL:
		duty = nouveau_therm_fan_get(therm);
		if (duty < 0)
		duty = 100;
		break;
		case FAN_CONTROL_AUTO:
		case NOUVEAU_THERM_CTRL_AUTO:
		if (priv->fan->bios.nr_fan_trip)
		duty = nouveau_therm_update_trip(therm);
		else
		duty = nouveau_therm_update_linear(therm);
		break;
		case FAN_CONTROL_NONE:
		case NOUVEAU_THERM_CTRL_NONE:
		default:
		goto done;
		}

		nouveau_therm_fan_set(therm, (mode != FAN_CONTROL_AUTO), duty);
		nv_debug(therm, "FAN target request: %d%%\n", duty);
		nouveau_therm_fan_set(therm, (mode != NOUVEAU_THERM_CTRL_AUTO), duty);

		done:
		if (list_empty(&priv->alarm.head) && (mode == FAN_CONTROL_AUTO))
		if (list_empty(&priv->alarm.head) && (mode == NOUVEAU_THERM_CTRL_AUTO))
		ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
		spin_unlock_irqrestore(&priv->lock, flags);
		}
		@@ -127,28 +130,22 @@ int
		nouveau_therm_mode(struct nouveau_therm *therm, int mode)
		{
		struct nouveau_therm_priv priv = (void )therm;

		if (priv->mode == mode)
		return 0;
		struct nouveau_device *device = nv_device(therm);
		static const char *name[] = {
		"disabled",
		"manual",
		"automatic"
		};

		/* The default PDAEMON ucode interferes with fan management */
		if (nv_device(therm)->card_type >= NV_C0)
		if ((mode >= ARRAY_SIZE(name)) \|\|
		(mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0))
		return -EINVAL;

		switch (mode) {
		case FAN_CONTROL_NONE:
		nv_info(therm, "switch to no-control mode\n");
		break;
		case FAN_CONTROL_MANUAL:
		nv_info(therm, "switch to manual mode\n");
		break;
		case FAN_CONTROL_AUTO:
		nv_info(therm, "switch to automatic mode\n");
		break;
		default:
		return -EINVAL;
		}
		if (priv->mode == mode)
		return 0;

		nv_info(therm, "Thermal management: %s\n", name[mode]);
		nouveau_therm_update(therm, mode);
		return 0;
		}
		@@ -258,9 +255,8 @@ _nouveau_therm_init(struct nouveau_object *object)
		if (ret)
		return ret;

		if (priv->fan->percent >= 0)
		therm->fan_set(therm, priv->fan->percent);

		if (priv->suspend >= 0)
		nouveau_therm_mode(therm, priv->mode);
		priv->sensor.program_alarms(therm);
		return 0;
		}
		@@ -271,7 +267,10 @@ _nouveau_therm_fini(struct nouveau_object *object, bool suspend)
		struct nouveau_therm therm = (void )object;
		struct nouveau_therm_priv priv = (void )therm;

		priv->fan->percent = therm->fan_get(therm);
		if (suspend) {
		priv->suspend = priv->mode;
		priv->mode = NOUVEAU_THERM_CTRL_NONE;
		}

		return nouveau_subdev_fini(&therm->base, suspend);
		}
		@@ -299,6 +298,7 @@ nouveau_therm_create_(struct nouveau_object *parent,
		priv->base.fan_sense = nouveau_therm_fan_sense;
		priv->base.attr_get = nouveau_therm_attr_get;
		priv->base.attr_set = nouveau_therm_attr_set;
		priv->mode = priv->suspend = -1; /* undefined */
		return 0;
		}

		@@ -308,6 +308,8 @@ nouveau_therm_preinit(struct nouveau_therm *therm)
		nouveau_therm_ic_ctor(therm);
		nouveau_therm_sensor_ctor(therm);
		nouveau_therm_fan_ctor(therm);

		nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_NONE);
		return 0;
		}

drivers/gpu/drm/nouveau/core/subdev/therm/fan.c

+11 −3

Original line number	Diff line number	Diff line
		@@ -47,10 +47,17 @@ nouveau_fan_update(struct nouveau_fan *fan, bool immediate, int target)
		target = fan->percent;
		target = max_t(u8, target, fan->bios.min_duty);
		target = min_t(u8, target, fan->bios.max_duty);
		if (fan->percent != target) {
		nv_debug(therm, "FAN target: %d\n", target);
		fan->percent = target;
		}

		/* smooth out the fanspeed increase/decrease */
		/* check that we're not already at the target duty cycle */
		duty = fan->get(therm);
		if (duty == target)
		goto done;

		/* smooth out the fanspeed increase/decrease */
		if (!immediate && duty >= 0) {
		/* the constant "3" is a rough approximation taken from
		* nvidia's behaviour.
		@@ -64,6 +71,7 @@ nouveau_fan_update(struct nouveau_fan *fan, bool immediate, int target)
		duty = target;
		}

		nv_debug(therm, "FAN update: %d\n", duty);
		ret = fan->set(therm, duty);
		if (ret)
		goto done;
		@@ -161,7 +169,7 @@ nouveau_therm_fan_user_set(struct nouveau_therm *therm, int percent)
		{
		struct nouveau_therm_priv priv = (void )therm;

		if (priv->mode != FAN_CONTROL_MANUAL)
		if (priv->mode != NOUVEAU_THERM_CTRL_MANUAL)
		return -EINVAL;

		return nouveau_therm_fan_set(therm, true, percent);

drivers/gpu/drm/nouveau/core/subdev/therm/priv.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -76,6 +76,7 @@ struct nouveau_therm_priv {
		spinlock_t lock;
		struct nouveau_therm_trip_point *last_trip;
		int mode;
		int suspend;

		/* bios */
		struct nvbios_therm_sensor bios_sensor;

drivers/gpu/drm/nouveau/core/subdev/therm/temp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -108,7 +108,7 @@ void nouveau_therm_sensor_event(struct nouveau_therm *therm,
		switch (thrs) {
		case NOUVEAU_THERM_THRS_FANBOOST:
		nouveau_therm_fan_set(therm, true, 100);
		nouveau_therm_mode(therm, FAN_CONTROL_AUTO);
		nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
		break;
		case NOUVEAU_THERM_THRS_DOWNCLOCK:
		if (priv->emergency.downclock)