[PATCH 11/25] drm/amd/display: Fix missing blendTF programming

[Hersen Wu]

From: Ilya Bakoulin <ilya.bakoulin at amd.com>

[Why]
When MPO surface pixel format is not ARGB8888, fast update can miss
programming blendTF.

[How]
Set the gamma_change update flag on blend_tf change.

Reviewed-by: Aric Cyr <aric.cyr at amd.com>
Acked-by: Hersen Wu <hersenxs.wu at amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 4360a696f10a..940ceaca8545 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2582,6 +2582,9 @@ static enum surface_update_type det_surface_update(const struct dc *dc,
 	if (u->gamut_remap_matrix)
 		update_flags->bits.gamut_remap_change = 1;
 
+	if (u->blend_tf)
+		update_flags->bits.gamma_change = 1;
+
 	if (u->gamma) {
 		enum surface_pixel_format format = SURFACE_PIXEL_FORMAT_GRPH_BEGIN;
 
-- 
2.25.1