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drm/amd/display: Defer DIG FIFO disable after VID stream enable

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[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 <aurabindo.pillai@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Syed Hassan <Syed.Hassan@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas 2022-12-06 16:10:22 -05:00 committed by Alex Deucher
parent a1cbe6916f
commit 2d90a1c054
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dio_stream_encoder.c
View file

@ -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(