diff options
| author | Peterson <peterson.guo@amd.com> | 2024-09-23 10:30:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-10-07 14:12:01 -0400 |
| commit | eda7f2e9bb3b6ba16cb19e521b433b22b220c0d0 (patch) | |
| tree | fb04411f874cfcc6abbd1609c4aba30fcbacbace /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
| parent | drm/amd/display: Noitfy DMCUB of D0/D3 state in hardware init (diff) | |
| download | linux-eda7f2e9bb3b6ba16cb19e521b433b22b220c0d0.tar.gz linux-eda7f2e9bb3b6ba16cb19e521b433b22b220c0d0.zip | |
drm/amd/display: Fix low black values by increasing error
[WHY]
Regamma resolution for the first few black levels can have problems for
calibration.
[HOW]
HW LUT is divided into N power-of-2 regions each with K segments. For
SDR mode we set min point at 2^-10 and increments of 2^-13. It's
generally more than 8-bit SDR needs, but some calibration tools and API
use 12-bit curves.
The fix shifts starting point to 2^-12 and starting increments at 2^-16.
Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Signed-off-by: Peterson <peterson.guo@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@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/amdgpu_dm/amdgpu_dm_helpers.c')
0 files changed, 0 insertions, 0 deletions