From: Ilya Bakoulin <[email protected]>

[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 <[email protected]>
Acked-by: Hersen Wu <[email protected]>
Signed-off-by: Ilya Bakoulin <[email protected]>
---
 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

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