[PATCH AUTOSEL 6.12 021/107] drm/amd/display: skip disable CRTC in seemless bootup case

[Sasha Levin]

From: Fudongwang <Fudong.Wang at amd.com>

[ Upstream commit 0e37e4b9afbd08df1f00a70bbb4d1ec273d18c9e ]

Resync FIFO is a workaround to write the same value to
DENTIST_DISPCLK_CNTL register after programming OTG_PIXEL_RATE_DIV
register, in case seemless boot, there is no OTG_PIXEL_RATE_DIV register
update, so skip CRTC disable when resync FIFO to avoid random FIFO error
and garbage.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Signed-off-by: Fudongwang <Fudong.Wang at amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira at amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
index 4e93eeedfc1bb..a8e04a39a19e5 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
@@ -371,7 +371,9 @@ void dcn314_resync_fifo_dccg_dio(struct dce_hwseq *hws, struct dc *dc, struct dc
 		if (pipe->top_pipe || pipe->prev_odm_pipe)
 			continue;
 
-		if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal))) {
+		if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal)) &&
+			!pipe->stream->apply_seamless_boot_optimization &&
+			!pipe->stream->apply_edp_fast_boot_optimization) {
 			pipe->stream_res.tg->funcs->disable_crtc(pipe->stream_res.tg);
 			reset_sync_context_for_pipe(dc, context, i);
 			otg_disabled[i] = true;
-- 
2.43.0