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From a7da4cf79754b9452e444b9e5d2e73268943fe42 Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Mon, 2 Oct 2017 17:08:24 -0400
Subject: [PATCH 2532/4131] drm/amd/display: wa to program split pipedegamma
regs after mode set.
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/core/dc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index bd41c1b..f9110b3 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1282,7 +1282,9 @@ static void commit_planes_for_stream(struct dc *dc,
if (update_type == UPDATE_TYPE_FAST)
continue;
- if (srf_updates[i].in_transfer_func)
+ /* work around to program degamma regs for split pipe after set mode. */
+ if (srf_updates[i].in_transfer_func || (pipe_ctx->top_pipe &&
+ pipe_ctx->top_pipe->plane_state == pipe_ctx->plane_state))
dc->hwss.set_input_transfer_func(
pipe_ctx, pipe_ctx->plane_state);
--
2.7.4
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