From: Nicholas Kazlauskas Date: Tue, 6 Dec 2022 21:10:22 +0000 (-0500) Subject: drm/amd/display: Defer DIG FIFO disable after VID stream enable X-Git-Tag: v6.6.7~3356^2~30^2~23 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d90a1c054831338d57b39aec4d273cf3e867590;p=platform%2Fkernel%2Flinux-starfive.git drm/amd/display: Defer DIG FIFO disable after VID stream enable [Why] On some monitors we see a brief flash of corruption during the monitor disable sequence caused by FIFO being disabled in the middle of an active DP stream. [How] Wait until DP vid stream is disabled before turning off the FIFO. The FIFO reset on DP unblank should take care of clearing any FIFO error, if any. Acked-by: Aurabindo Pillai Signed-off-by: Nicholas Kazlauskas Reviewed-by: Syed Hassan Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c index 38842f9..0926db0 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c @@ -278,10 +278,10 @@ static void enc314_stream_encoder_dp_blank( struct dc_link *link, struct stream_encoder *enc) { - /* New to DCN314 - disable the FIFO before VID stream disable. */ - enc314_disable_fifo(enc); - enc1_stream_encoder_dp_blank(link, enc); + + /* Disable FIFO after the DP vid stream is disabled to avoid corruption. */ + enc314_disable_fifo(enc); } static void enc314_stream_encoder_dp_unblank(