[PATCH v6 7/9] drm/i915: Restore brightness level in aux backlight driver

Puthikorn Voravootivat puthik at chromium.org
Tue May 9 23:40:50 UTC 2017


Some panel will default to zero brightness when turning the
panel off and on again. This patch restores last brightness
level back when panel is turning back on.

Signed-off-by: Puthikorn Voravootivat <puthik at chromium.org>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
 drivers/gpu/drm/i915/intel_dp_aux_backlight.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
index 7d323af96636..fc26fea94fd4 100644
--- a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
+++ b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
@@ -158,6 +158,7 @@ static void intel_dp_aux_enable_backlight(struct intel_connector *connector)
 	}
 
 	set_aux_backlight_enable(intel_dp, true);
+	intel_dp_aux_set_backlight(connector, connector->panel.backlight.level);
 }
 
 static void intel_dp_aux_disable_backlight(struct intel_connector *connector)
-- 
2.13.0.rc2.291.g57267f2277-goog



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