diff options
| author | George Shen <george.shen@amd.com> | 2023-03-29 15:33:35 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-02-07 12:26:22 -0500 |
| commit | ead4c6b94d9b9d9801fd73220cbb032cb7908ac9 (patch) | |
| tree | 63ace194a0ac9f427d59b3dc70510a9011db830b /drivers/gpu/drm/amd | |
| parent | 6226a5aa77370329e01ee8abe50a95e60618ce97 (diff) | |
drm/amd/display: Add debug option to force 1-tap chroma subsampling
[Why]
Default driver behaviour is 3-tap subsampling, so we should keep
it the same for test patterns as well. However, it is also useful
to force 1-tap subsampling for testing purposes.
Reviewed-by: Michael Strauss <michael.strauss@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 10a5f53a56db..2dec2507e971 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -991,6 +991,7 @@ struct dc_debug_options { bool disable_timeout; bool disable_extblankadj; unsigned int static_screen_wait_frames; + bool force_chroma_subsampling_1tap; }; struct gpu_info_soc_bounding_box_v1_0; diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c index 0dec57679269..48a40dcc7050 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c @@ -23,6 +23,7 @@ * */ +#include "core_types.h" #include "dm_services.h" #include "dcn10_opp.h" #include "reg_helper.h" @@ -160,6 +161,9 @@ static void opp1_set_pixel_encoding( struct dcn10_opp *oppn10, const struct clamping_and_pixel_encoding_params *params) { + bool force_chroma_subsampling_1tap = + oppn10->base.ctx->dc->debug.force_chroma_subsampling_1tap; + switch (params->pixel_encoding) { case PIXEL_ENCODING_RGB: @@ -178,6 +182,9 @@ static void opp1_set_pixel_encoding( default: break; } + + if (force_chroma_subsampling_1tap) + REG_UPDATE(FMT_CONTROL, FMT_SUBSAMPLING_MODE, 0); } /** |