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| author | David Francis <David.Francis@amd.com> | 2018-07-19 11:25:05 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-06 14:35:24 -0500 |
| commit | 620a0d27b211aa03d3f99accfdd58b88e6e0504c (patch) | |
| tree | 24f4b682dc1e04e55416ccb681602b9c272879fa /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | 0301ccbaf67d3d9aea97156c5eb85233bb5a5178 (diff) | |
| download | lwn-620a0d27b211aa03d3f99accfdd58b88e6e0504c.tar.gz lwn-620a0d27b211aa03d3f99accfdd58b88e6e0504c.zip | |
drm/amd/display: Implement backlight_ops.get_brightness
[Why]
This hook that is supposed to read the actual backlight value
is used in a few places throughout the kernel to setup or force
update on backlight
[How]
Create a dc function that calls the existing abm function, and
call that function from amdgpu
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index c1631d61336e..dcae658fbc50 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1320,7 +1320,12 @@ static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd) { - return bd->props.brightness; + struct amdgpu_display_manager *dm = bl_get_data(bd); + int ret = dc_link_get_backlight_level(dm->backlight_link); + + if (ret == DC_ERROR_UNEXPECTED) + return bd->props.brightness; + return ret; } static const struct backlight_ops amdgpu_dm_backlight_ops = { |