diff mbox series

[v2] drm/i915/display: clear plane color ctl setting when turn full plane off

Message ID 20220722070343.10654-1-shawn.c.lee@intel.com (mailing list archive)
State New, archived
Headers show
Series [v2] drm/i915/display: clear plane color ctl setting when turn full plane off | expand

Commit Message

Lee Shawn C July 22, 2022, 7:03 a.m. UTC 
Customer report abnormal display output while switch eDP off sometimes.
In current display disable flow, plane will be off at first. Then turn
eDP off and disable HW pipe line. We found the abnormal pixel comes
after turn plane off. Clear plane color ctl register when driver disable
plane can solve this symptom.

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Shankar Uma <uma.shankar@intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Cc: William Tseng <william.tseng@intel.com>
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
---
 drivers/gpu/drm/i915/display/skl_universal_plane.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index caa03324a733..90977cfb7ebb 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -620,6 +620,8 @@  skl_plane_disable_arm(struct intel_plane *plane,
 
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
+	if (DISPLAY_VER(dev_priv) >= 10)
+		intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id), 0);
 }
 
 static void
@@ -638,6 +640,7 @@  icl_plane_disable_arm(struct intel_plane *plane,
 	intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
+	intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id), 0);
 }
 
 static bool