1 files changed, 202 insertions, 16 deletions

diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
index 1674c74a76c8..f794dc89a3b2 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
@@ -29,6 +29,134 @@
 
 #include "priv.h"
 
+static int
+nouveau_therm_update_trip(struct nouveau_therm *therm)
+{
+	struct nouveau_therm_priv *priv = (void *)therm;
+	struct nouveau_therm_trip_point *trip = priv->fan->bios.trip,
+					*cur_trip = NULL,
+					*last_trip = priv->last_trip;
+	u8  temp = therm->temp_get(therm);
+	u16 duty, i;
+
+	/* look for the trip point corresponding to the current temperature */
+	cur_trip = NULL;
+	for (i = 0; i < priv->fan->bios.nr_fan_trip; i++) {
+		if (temp >= trip[i].temp)
+			cur_trip = &trip[i];
+	}
+
+	/* account for the hysteresis cycle */
+	if (last_trip && temp <= (last_trip->temp) &&
+	    temp > (last_trip->temp - last_trip->hysteresis))
+		cur_trip = last_trip;
+
+	if (cur_trip) {
+		duty = cur_trip->fan_duty;
+		priv->last_trip = cur_trip;
+	} else {
+		duty = 0;
+		priv->last_trip = NULL;
+	}
+
+	return duty;
+}
+
+static int
+nouveau_therm_update_linear(struct nouveau_therm *therm)
+{
+	struct nouveau_therm_priv *priv = (void *)therm;
+	u8  linear_min_temp = priv->fan->bios.linear_min_temp;
+	u8  linear_max_temp = priv->fan->bios.linear_max_temp;
+	u8  temp = therm->temp_get(therm);
+	u16 duty;
+
+	/* handle the non-linear part first */
+	if (temp < linear_min_temp)
+		return priv->fan->bios.min_duty;
+	else if (temp > linear_max_temp)
+		return priv->fan->bios.max_duty;
+
+	/* we are in the linear zone */
+	duty  = (temp - linear_min_temp);
+	duty *= (priv->fan->bios.max_duty - priv->fan->bios.min_duty);
+	duty /= (linear_max_temp - linear_min_temp);
+	duty += priv->fan->bios.min_duty;
+
+	return duty;
+}
+
+static void
+nouveau_therm_update(struct nouveau_therm *therm, int mode)
+{
+	struct nouveau_timer *ptimer = nouveau_timer(therm);
+	struct nouveau_therm_priv *priv = (void *)therm;
+	unsigned long flags;
+	int duty;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (mode < 0)
+		mode = priv->mode;
+	priv->mode = mode;
+
+	switch (mode) {
+	case NOUVEAU_THERM_CTRL_MANUAL:
+		duty = nouveau_therm_fan_get(therm);
+		if (duty < 0)
+			duty = 100;
+		break;
+	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 NOUVEAU_THERM_CTRL_NONE:
+	default:
+		goto done;
+	}
+
+	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 == NOUVEAU_THERM_CTRL_AUTO))
+		ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void
+nouveau_therm_alarm(struct nouveau_alarm *alarm)
+{
+	struct nouveau_therm_priv *priv =
+	       container_of(alarm, struct nouveau_therm_priv, alarm);
+	nouveau_therm_update(&priv->base, -1);
+}
+
+int
+nouveau_therm_mode(struct nouveau_therm *therm, int mode)
+{
+	struct nouveau_therm_priv *priv = (void *)therm;
+	struct nouveau_device *device = nv_device(therm);
+	static const char *name[] = {
+		"disabled",
+		"manual",
+		"automatic"
+	};
+
+	/* The default PDAEMON ucode interferes with fan management */
+	if ((mode >= ARRAY_SIZE(name)) ||
+	    (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0))
+		return -EINVAL;
+
+	if (priv->mode == mode)
+		return 0;
+
+	nv_info(therm, "Thermal management: %s\n", name[mode]);
+	nouveau_therm_update(therm, mode);
+	return 0;
+}
+
 int
 nouveau_therm_attr_get(struct nouveau_therm *therm,
 		       enum nouveau_therm_attr_type type)
@@ -37,11 +165,11 @@ nouveau_therm_attr_get(struct nouveau_therm *therm,
 
 	switch (type) {
 	case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
-		return priv->bios_fan.min_duty;
+		return priv->fan->bios.min_duty;
 	case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
-		return priv->bios_fan.max_duty;
+		return priv->fan->bios.max_duty;
 	case NOUVEAU_THERM_ATTR_FAN_MODE:
-		return priv->fan.mode;
+		return priv->mode;
 	case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
 		return priv->bios_sensor.thrs_fan_boost.temp;
 	case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
@@ -73,42 +201,50 @@ nouveau_therm_attr_set(struct nouveau_therm *therm,
 	case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
 		if (value < 0)
 			value = 0;
-		if (value > priv->bios_fan.max_duty)
-			value = priv->bios_fan.max_duty;
-		priv->bios_fan.min_duty = value;
+		if (value > priv->fan->bios.max_duty)
+			value = priv->fan->bios.max_duty;
+		priv->fan->bios.min_duty = value;
 		return 0;
 	case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
 		if (value < 0)
 			value = 0;
-		if (value < priv->bios_fan.min_duty)
-			value = priv->bios_fan.min_duty;
-		priv->bios_fan.max_duty = value;
+		if (value < priv->fan->bios.min_duty)
+			value = priv->fan->bios.min_duty;
+		priv->fan->bios.max_duty = value;
 		return 0;
 	case NOUVEAU_THERM_ATTR_FAN_MODE:
-		return nouveau_therm_fan_set_mode(therm, value);
+		return nouveau_therm_mode(therm, value);
 	case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
 		priv->bios_sensor.thrs_fan_boost.temp = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
 		priv->bios_sensor.thrs_fan_boost.hysteresis = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
 		priv->bios_sensor.thrs_down_clock.temp = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
 		priv->bios_sensor.thrs_down_clock.hysteresis = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
 		priv->bios_sensor.thrs_critical.temp = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
 		priv->bios_sensor.thrs_critical.hysteresis = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
 		priv->bios_sensor.thrs_shutdown.temp = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
 		priv->bios_sensor.thrs_shutdown.hysteresis = value;
+		priv->sensor.program_alarms(therm);
 		return 0;
 	}
 
@@ -116,7 +252,7 @@ nouveau_therm_attr_set(struct nouveau_therm *therm,
 }
 
 int
-nouveau_therm_init(struct nouveau_object *object)
+_nouveau_therm_init(struct nouveau_object *object)
 {
 	struct nouveau_therm *therm = (void *)object;
 	struct nouveau_therm_priv *priv = (void *)therm;
@@ -126,19 +262,69 @@ 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;
 }
 
 int
-nouveau_therm_fini(struct nouveau_object *object, bool suspend)
+_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);
 }
+
+int
+nouveau_therm_create_(struct nouveau_object *parent,
+		      struct nouveau_object *engine,
+		      struct nouveau_oclass *oclass,
+		      int length, void **pobject)
+{
+	struct nouveau_therm_priv *priv;
+	int ret;
+
+	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM",
+				     "therm", length, pobject);
+	priv = *pobject;
+	if (ret)
+		return ret;
+
+	nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm);
+	spin_lock_init(&priv->lock);
+	spin_lock_init(&priv->sensor.alarm_program_lock);
+
+	priv->base.fan_get = nouveau_therm_fan_user_get;
+	priv->base.fan_set = nouveau_therm_fan_user_set;
+	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;
+}
+
+int
+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;
+}
+
+void
+_nouveau_therm_dtor(struct nouveau_object *object)
+{
+	struct nouveau_therm_priv *priv = (void *)object;
+	kfree(priv->fan);
+	nouveau_subdev_destroy(&priv->base.base);
+}