diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_panel.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 8e374449c6b5..18784470a760 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -751,6 +751,8 @@ void intel_panel_disable_backlight(struct intel_connector *connector) spin_lock_irqsave(&dev_priv->backlight_lock, flags); + if (panel->backlight.device) + panel->backlight.device->props.power = FB_BLANK_POWERDOWN; panel->backlight.enabled = false; dev_priv->display.disable_backlight(connector); @@ -957,6 +959,8 @@ void intel_panel_enable_backlight(struct intel_connector *connector) dev_priv->display.enable_backlight(connector); panel->backlight.enabled = true; + if (panel->backlight.device) + panel->backlight.device->props.power = FB_BLANK_UNBLANK; spin_unlock_irqrestore(&dev_priv->backlight_lock, flags); } @@ -965,6 +969,7 @@ void intel_panel_enable_backlight(struct intel_connector *connector) static int intel_backlight_device_update_status(struct backlight_device *bd) { struct intel_connector *connector = bl_get_data(bd); + struct intel_panel *panel = &connector->panel; struct drm_device *dev = connector->base.dev; drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); @@ -972,6 +977,23 @@ static int intel_backlight_device_update_status(struct backlight_device *bd) bd->props.brightness, bd->props.max_brightness); intel_panel_set_backlight(connector, bd->props.brightness, bd->props.max_brightness); + + /* + * Allow flipping bl_power as a sub-state of enabled. Sadly the + * backlight class device does not make it easy to to differentiate + * between callbacks for brightness and bl_power, so our backlight_power + * callback needs to take this into account. + */ + if (panel->backlight.enabled) { + if (panel->backlight_power) { + bool enable = bd->props.power == FB_BLANK_UNBLANK && + bd->props.brightness != 0; + panel->backlight_power(connector, enable); + } + } else { + bd->props.power = FB_BLANK_POWERDOWN; + } + drm_modeset_unlock(&dev->mode_config.connection_mutex); return 0; } @@ -1023,6 +1045,11 @@ static int intel_backlight_device_register(struct intel_connector *connector) panel->backlight.level, props.max_brightness); + if (panel->backlight.enabled) + props.power = FB_BLANK_UNBLANK; + else + props.power = FB_BLANK_POWERDOWN; + /* * Note: using the same name independent of the connector prevents * registration of multiple backlight devices in the driver. @@ -1203,7 +1230,7 @@ static int vlv_setup_backlight(struct intel_connector *connector) enum pipe pipe; u32 ctl, ctl2, val; - for_each_pipe(pipe) { + for_each_pipe(dev_priv, pipe) { u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(pipe)); /* Skip if the modulation freq is already set */ |