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From a9e23519f99948f545d6a48a8f594a8773f36696 Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Fri, 17 Nov 2017 10:44:15 -0500
Subject: [PATCH 2899/4131] drm/amd/display: Disable plane right after
disconnected
HDR display playing video underflow is observed when switching
to full screen due to program a lower watermark right after unlock otg.
Instead of disable plane in next flip coming, if there is a
plane disconnected, after otg unlock wait for mpcc idle and disable
the plane, then program watermark. So there is enough warter mark to make
sure current frame data pass through.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 1ebe980..d542e4db 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2297,7 +2297,7 @@ static void dcn10_apply_ctx_for_surface(
pipe_ctx->plane_state->update_flags.bits.full_update)
program_water_mark = true;
- if (removed_pipe[i] && num_planes == 0)
+ if (removed_pipe[i])
dcn10_disable_plane(dc, old_pipe_ctx);
}
@@ -2306,6 +2306,7 @@ static void dcn10_apply_ctx_for_surface(
/* pstate stuck check after watermark update */
dcn10_verify_allow_pstate_change_high(dc);
}
+
/* watermark is for all pipes */
hubbub1_program_watermarks(dc->res_pool->hubbub,
&context->bw.dcn.watermarks, ref_clk_mhz);
--
2.7.4
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