drm/amdgpu/display: Add gpio support for DCN

GPIOs are used for i2c and other things.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2017-05-08 15:21:44 -04:00 • committed by Alex Deucher
commit 981ab3f1dc
4 changed files with 666 additions and 0 deletions