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| 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/dml_inline_defs.h | |
| parent | 6da15a236c8c80d9f87e4c5216e00ad8f1cace2d (diff) | |
| download | linux-stable-17529ea2acfa3e2118f5a9ee911e0daf2d88c13f.tar.gz linux-stable-17529ea2acfa3e2118f5a9ee911e0daf2d88c13f.tar.bz2 linux-stable-17529ea2acfa3e2118f5a9ee911e0daf2d88c13f.zip | |
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/dml_inline_defs.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h b/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h index 479d7d83220c..072bd0539605 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h +++ b/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h @@ -76,14 +76,9 @@ static inline double dml_floor(double a, double granularity) static inline double dml_round(double a) { - double round_pt = 0.5; - double ceil = dml_ceil(a, 1); - double floor = dml_floor(a, 1); + const double round_pt = 0.5; - if (a - floor >= round_pt) - return ceil; - else - return floor; + return dml_floor(a + round_pt, 1); } /* float |