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drm/i915: return actual brightness to .get_brightness callback 

The backlight device .get_brightness callback is supposed to return the
actual brightness by querying the hardware, not the cached value. See
Documentation/ABI/stable/sysfs-class-backlight. The callback is there to
support the actual_brightness sysfs file.

With the backlight_level and backlight device brightness now in sync, one
can reliably get the cached value through the brightness sysfs file.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2013-03-12 11:44:16 +02:00 committed by Daniel Vetter
parent b6b3ba5b22
commit 7c23396b40
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/intel_panel.c
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@ -415,8 +415,7 @@ static int intel_panel_update_status(struct backlight_device *bd)
static int intel_panel_get_brightness(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
struct drm_i915_private *dev_priv = dev->dev_private;
return dev_priv->backlight_level;
return intel_panel_get_backlight(dev);
}
static const struct backlight_ops intel_panel_bl_ops = {