drm/radeon/atpx: check for ATIF dGPU wake for display events support
authorAlex Deucher <alexander.deucher@amd.com>
Wed, 14 Sep 2016 18:14:55 +0000 (14:14 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 22 Sep 2016 14:30:45 +0000 (10:30 -0400)
commit4777166989dee66a5050ce77d0ea37832ed330d7
treea83c3c6b12ba96696bc9c1364b5c7c8017d77a11
parent1b0f568d24cb7d750e99c48a6dab6e3246507fef
drm/radeon/atpx: check for ATIF dGPU wake for display events support

Some ATPX laptops implement special circuitry to generate
display hotplug events via ACPI when the dGPU is powered off.
Check if this is supported.

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