[PATCH 18/39] drm/amd/display: resync OTG after DIO FIFO resync

Alex Hung
2024-06-20T16:16:29Z

From: TungYu Lu <tungyu.lu@amd.com>

[WHY]
Tiled displays showed not aligned on 8K60hz when system resumed
from S3/S4.

[HOW]
Do dc_trigger_sync to re-sync pipes to ensure OTG become synced.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: TungYu Lu <tungyu.lu@amd.com>
---
drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
index bdbb4a71651f..fe62478fbcde 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
@@ -1254,6 +1254,8 @@ void dcn32_resync_fifo_dccg_dio(struct dce_hwseq *hws, struct dc *dc, struct dc_
pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
}
}
+
+ dc_trigger_sync(dc, dc->current_state);
}

void dcn32_unblank_stream(struct pipe_ctx *pipe_ctx,
--
2.34.1