drm/amd/display: Let updates with no scaling changes be fast
authorDavid Francis <David.Francis@amd.com>
Thu, 3 Jan 2019 19:38:06 +0000 (14:38 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 25 Jan 2019 21:15:36 +0000 (16:15 -0500)
commit4ef9f1ec837be562b42a1c0f196c4ef371b2ed84
treec10b8b87268b551b8027a7a9c779c175a3503ec6
parentb9708648766d8b15003a543ca36863e731b7b1ba
drm/amd/display: Let updates with no scaling changes be fast

[Why]
DC was assuming that any surface_update->scaling_info
meant the update was at least medium.  However, if nothing
has changed there is no scaling to program, so there is
no problem with the update being fast

[How]
If every update flag is not set, the update is fast

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/core/dc.c