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Commit e6755fb7 authored by Jani Nikula's avatar Jani Nikula Committed by Daniel Vetter
Browse files

drm/i915: switch off backlight for backlight class 0 brightness 



Make backlight class sysfs brightness 0 value switch off the backlight
for connectors that have the backlight_power callback defined. For eDP,
this has the similar caveats regarding power savings as bl_power as only
the power sequencer backlight control is switched off.

Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed_by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 73580fb7

drivers/gpu/drm/i915/intel_panel.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -986,7 +986,8 @@ static int intel_backlight_device_update_status(struct backlight_device *bd) 
	 */

	 */

	if (panel->backlight.enabled) {

	if (panel->backlight.enabled) {

		if (panel->backlight_power) {

		if (panel->backlight_power) {

			bool enable = bd->props.power == FB_BLANK_UNBLANK;

			bool enable = bd->props.power == FB_BLANK_UNBLANK &&

				bd->props.brightness != 0;

			panel->backlight_power(connector, enable);

			panel->backlight_power(connector, enable);

		}

		}

	} else {

	} else {