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>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 56702840710b50eb07acfc9b388bac59e00f21a3..1dabafc12cfe2d9f11bdca52f11fe629bc1d5ac9 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1240,7 +1240,7 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
                        || update_flags->bits.output_tf_change)
                return UPDATE_TYPE_FULL;
 
-       return UPDATE_TYPE_MED;
+       return update_flags->raw ? UPDATE_TYPE_MED : UPDATE_TYPE_FAST;
 }
 
 static enum surface_update_type get_scaling_info_update_type(