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drm/nouveau/fan: restore pwm value on resume when in manual/auto mode

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If the fan was in manual or auto mode, we should restore the fan speed
that was previously set when resuming.

The initial pwm value is saved when loading the module.

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Tested-by: Martin Peres <martin.peres@labri.fr>
Tested-by: Dash Four <mr.dash.four@googlemail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Martin Peres 2013-08-11 22:48:49 -04:00 committed by Ben Skeggs
parent ffb8ea8af2
commit 4cc00ad137
2 changed files with 9 additions and 1 deletions
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7
drivers/gpu/drm/nouveau/core/subdev/therm/base.c
View File

@ -267,8 +267,13 @@ _nouveau_therm_init(struct nouveau_object *object)
if (ret)
return ret;
if (priv->suspend >= 0)
if (priv->suspend >= 0) {
/* restore the pwm value only when on manual or auto mode */
if (priv->suspend > 0)
nouveau_therm_fan_set(therm, true, priv->fan->percent);
nouveau_therm_fan_mode(therm, priv->suspend);
}
priv->sensor.program_alarms(therm);
return 0;
}

3
drivers/gpu/drm/nouveau/core/subdev/therm/fan.c
View File

@ -234,6 +234,9 @@ nouveau_therm_fan_ctor(struct nouveau_therm *therm)
nv_info(therm, "FAN control: %s\n", priv->fan->type);
/* read the current speed, it is useful when resuming */
priv->fan->percent = nouveau_therm_fan_get(therm);
/* attempt to detect a tachometer connection */
ret = gpio->find(gpio, 0, DCB_GPIO_FAN_SENSE, 0xff, &priv->fan->tach);
if (ret)