drm/i915: make asle notifications update backlight on all connectors

ALthough usually there's only one connector that supports backlight,
this also finds the correct connector. Before, we only updated the
connector on pipe A, which might not be the one with backlight. (This
only made a difference on BYT.)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 0a4aeaf96865..c80bffc21b5b 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -844,13 +844,17 @@ int intel_panel_setup_backlight(struct drm_connector *connector)
 
         intel_backlight_device_register(intel_connector);
 
+        panel->backlight.present = true;
+
         return 0;
 }
 
 void intel_panel_destroy_backlight(struct drm_connector *connector)
 {
         struct intel_connector *intel_connector = to_intel_connector(connector);
+        struct intel_panel *panel = &intel_connector->panel;
 
+        panel->backlight.present = false;
         intel_backlight_device_unregister(intel_connector);
 }