drm/amd/display: Ensure DRR triggers in BP

Browse source

[Why]
In the previous implementation DRR event sometimes came
in during FP2 region which is a keep-out zone. This
would cause the frame not to latch until the next frame
which resulted in heavy flicker. To fix this we need
to make sure that it triggers in the BP.

[How]
1. Remove DRR programming during flip
2. Setup manual trigger for DRR event and trigger it
after surface programming is complete

Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Eryk Brol 2019-04-23 11:53:52 -04:00 • committed by Alex Deucher

parent 284358f2ac

commit ae8f425840

3 changed files with 37 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

31

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c

View file

7

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.h

View file

1

drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h

View file