drm/amd/display: add pipe locking before front end programing

Add pipe locking/unlocking before we program the front end

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2017-11-24 17:26:28 -05:00 • committed by Alex Deucher
commit b216211717