drm/radeon: add a module parameter for backlight control (v2)
authorAlex Deucher <alexander.deucher@amd.com>
Wed, 17 Sep 2014 00:57:26 +0000 (20:57 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 22 Sep 2014 21:24:27 +0000 (17:24 -0400)
commitbc13018b5eba26ca229b33763c9e61fac31a1925
treeac2c4585da2e7cfe7e31dfff6e7478cb2a6160ff
parentf55e03b975c230758c8f164347dfa10103f60e2c
drm/radeon: add a module parameter for backlight control (v2)

Add a module parameter to disable the radeon GPU backlight
controller to override the automatic detection.  Some
laptops seems to indicate that they use the integrated
controller, but appear to actually use an external
controller.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=81382

v2: fix module parameter description

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/radeon/radeon.h
drivers/gpu/drm/radeon/radeon_drv.c
drivers/gpu/drm/radeon/radeon_encoders.c