]> git.baikalelectronics.ru Git - kernel.git/commit
drm/amd/display: update bios scratch when setting backlight
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 23 Nov 2021 15:44:48 +0000 (10:44 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 24 Nov 2021 20:14:36 +0000 (15:14 -0500)
commit5e5b464614f40c5e9ea87262c2b8d6765932f3e9
tree72c307584e8e9a7fcaa8f2e9524bea6af98a035d
parent10782d310ea37044171d6935a7b422c8dfb86d28
drm/amd/display: update bios scratch when setting backlight

Update the bios scratch register when updating the backlight
level.  Some platforms apparently read this scratch register
and do additional operations in their hotkey handlers.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1518
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c