drm/amd/display: Skip modeset for front porch change

[Why]
A seamless transition between modes can be performed if the new incoming
mode has the same timing parameters as the optimized mode on a display with a
variable vtotal min/max.

Smooth video playback usecases can be enabled with this seamless transition by
switching to a new mode which has a refresh rate matching the video.

[How]
Skip full modeset if userspace requested a compatible freesync mode which only
differs in the front porch timing from the current mode.

Signed-off-by: Aurabindo Pillai <[email protected]>
Acked-by: Christian König <[email protected]>
Reviewed-by: Nicholas Kazlauskas <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions