From: Anthony Koo <Anthony.Koo@amd.com>
Date: Thu, 29 Mar 2018 11:23:37 -0400
Subject: drm/amd/display: csc updates require FULL update
Git-commit: 35ad2254cb7d0a46f135eb57990ca6618f79510b
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c |   12 ++++++++++--
 drivers/gpu/drm/amd/display/dc/dc.h      |    1 +
 2 files changed, 11 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1154,12 +1154,20 @@ static enum surface_update_type det_surf
 	if (u->input_csc_color_matrix)
 		update_flags->bits.input_csc_change = 1;
 
-	if (update_flags->bits.in_transfer_func_change
-			|| update_flags->bits.input_csc_change) {
+	if (u->coeff_reduction_factor)
+		update_flags->bits.coeff_reduction_change = 1;
+
+	if (update_flags->bits.in_transfer_func_change) {
 		type = UPDATE_TYPE_MED;
 		elevate_update_type(&overall_type, type);
 	}
 
+	if (update_flags->bits.input_csc_change
+			|| update_flags->bits.coeff_reduction_change) {
+		type = UPDATE_TYPE_FULL;
+		elevate_update_type(&overall_type, type);
+	}
+
 	return overall_type;
 }
 
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -429,6 +429,7 @@ union surface_update_flags {
 		uint32_t position_change:1;
 		uint32_t in_transfer_func_change:1;
 		uint32_t input_csc_change:1;
+		uint32_t coeff_reduction_change:1;
 		uint32_t output_tf_change:1;
 		uint32_t pixel_format_change:1;