diff options
| author | Aric Cyr <aric.cyr@amd.com> | 2022-08-20 17:20:30 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-13 14:32:59 -0400 |
| commit | 17529ea2acfa3e2118f5a9ee911e0daf2d88c13f (patch) | |
| tree | ba1f26a49c8bea8ecb0db07a6e0d4246d567b8ac /drivers/gpu/drm/amd/display/dc/dml/dcn21 | |
| parent | 6da15a236c8c80d9f87e4c5216e00ad8f1cace2d (diff) | |
| download | linux-17529ea2acfa3e2118f5a9ee911e0daf2d88c13f.tar.bz2 | |
drm/amd/display: Optimizations for DML math
[why]
Conditionals in the DML basic math functions significantly impact mode
enumeration.
[how]
Remove conditionals for floor/ceil operations which are used frequently
in DML and add an assertion for invalid callers using zero granuality.
Fix existing callers that rely on 0 granularity.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dml/dcn21')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c index 8a7485e21d53..d40d32e380f4 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c @@ -806,10 +806,12 @@ static bool CalculatePrefetchSchedule( if (myPipe->SourceScan == dm_horz) { *swath_width_luma_ub = dml_ceil(SwathWidthY - 1, myPipe->BlockWidth256BytesY) + myPipe->BlockWidth256BytesY; - *swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockWidth256BytesC) + myPipe->BlockWidth256BytesC; + if (myPipe->BlockWidth256BytesC > 0) + *swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockWidth256BytesC) + myPipe->BlockWidth256BytesC; } else { *swath_width_luma_ub = dml_ceil(SwathWidthY - 1, myPipe->BlockHeight256BytesY) + myPipe->BlockHeight256BytesY; - *swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockHeight256BytesC) + myPipe->BlockHeight256BytesC; + if (myPipe->BlockWidth256BytesC > 0) + *swath_width_chroma_ub = dml_ceil(SwathWidthY / 2 - 1, myPipe->BlockHeight256BytesC) + myPipe->BlockHeight256BytesC; } prefetch_bw_oto = (PrefetchSourceLinesY * *swath_width_luma_ub * dml_ceil(BytePerPixelDETY, 1) + PrefetchSourceLinesC * *swath_width_chroma_ub * dml_ceil(BytePerPixelDETC, 2)) / Tsw_oto; |