drm/amdgpu/display: add helper functions to get/set backlight (v2)

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And cache the value.  These can be used by the backlight callbacks
and modesetting functions.

v2: rebase on latest backlight changes.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1337
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Alex Deucher 2021-05-11 11:37:09 -04:00

parent 1f6256590c

commit 3d6c91641b

2 changed files with 38 additions and 11 deletions

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42

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

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7

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

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