diff options
| author | Iswara Nagulendran <iswara.nagulendran@amd.com> | 2023-09-29 11:20:46 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-26 19:02:22 -0400 |
| commit | b231933da7d6be53d08139f8adf2560a90b47ca9 (patch) | |
| tree | c9bd2b20430ea88274f870ae26a4cb9bef47fa47 /drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | |
| parent | 1b9ec7cb424441de67d09c3abad46467f82ff161 (diff) | |
drm/amd/display: Read before writing Backlight Mode Set Register
[HOW&WHY]
Reading the value from
DP_EDP_BACKLIGHT_MODE_SET_REGISTER, DPCD 0x721
before setting the
BP_EDP_PANEL_LUMINANC_CONTROL_ENABLE bit
to ensure there are no accidental overwrites.
Reviewed-by: Sreeja Golui <sreeja.golui@amd.com>
Reviewed-by: Harry Vanzylldejong <harry.vanzylldejong@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Iswara Nagulendran <iswara.nagulendran@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/amdgpu/amdgpu_ras.c')
0 files changed, 0 insertions, 0 deletions