drm/amd/display: Add a backlight module option

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There seem devices that don't work with the aux channel backlight
control.  For allowing such users to test with the other backlight
control method, provide a new module option, aux_backlight, to specify
enabling or disabling the aux backport support explicitly.  As
default, the aux support is detected by the hardware capability.

v2: make the backlight option generic in case we add future
backlight types (Alex)

BugLink: https://bugzilla.opensuse.org/show_bug.cgi?id=1180749
BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1438
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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Takashi Iwai 2021-02-03 13:42:41 +01:00 • committed by Alex Deucher

parent 0ad3e64eb4

commit 7a46f05e5e

3 changed files with 10 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu.h

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drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

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

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