diff options
| author | Ilya Bakoulin <ilya.bakoulin@amd.com> | 2023-10-12 12:21:34 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-03 12:18:33 -0400 |
| commit | 5d853ad5a866dd52ff519afd073f4156cca3cf7f (patch) | |
| tree | 17b8763841331a5d80242e81f44235efbc7b44b8 /drivers/gpu/drm/amd/display/dc/dcn30 | |
| parent | 995dedb7a4fa9703d1ae584914b0aa12b5da454c (diff) | |
| download | linux-stable-5d853ad5a866dd52ff519afd073f4156cca3cf7f.tar.gz linux-stable-5d853ad5a866dd52ff519afd073f4156cca3cf7f.tar.bz2 linux-stable-5d853ad5a866dd52ff519afd073f4156cca3cf7f.zip | |
drm/amd/display: Fix blend LUT programming
[Why]
LUT write index does not get reset to zero when writing the LUT values
for each separate RGB component, which results in wrong data for 2 of
the 3 components.
[How]
Reset LUT write index to zero before writing each component's data.
Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Acked-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn30')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c index 50dc83404644..11f7746f3a65 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c @@ -613,16 +613,19 @@ static void dpp3_program_blnd_pwl( REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, rgb[i].red_reg); REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, last_base_value_red); } else { + REG_SET(CM_BLNDGAM_LUT_INDEX, 0, CM_BLNDGAM_LUT_INDEX, 0); REG_UPDATE(CM_BLNDGAM_LUT_CONTROL, CM_BLNDGAM_LUT_WRITE_COLOR_MASK, 4); for (i = 0 ; i < num; i++) REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, rgb[i].red_reg); REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, last_base_value_red); + REG_SET(CM_BLNDGAM_LUT_INDEX, 0, CM_BLNDGAM_LUT_INDEX, 0); REG_UPDATE(CM_BLNDGAM_LUT_CONTROL, CM_BLNDGAM_LUT_WRITE_COLOR_MASK, 2); for (i = 0 ; i < num; i++) REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, rgb[i].green_reg); REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, last_base_value_green); + REG_SET(CM_BLNDGAM_LUT_INDEX, 0, CM_BLNDGAM_LUT_INDEX, 0); REG_UPDATE(CM_BLNDGAM_LUT_CONTROL, CM_BLNDGAM_LUT_WRITE_COLOR_MASK, 1); for (i = 0 ; i < num; i++) REG_SET(CM_BLNDGAM_LUT_DATA, 0, CM_BLNDGAM_LUT_DATA, rgb[i].blue_reg); |