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From b765d00217038ea76b37bf09dc3c5a437f7f5d24 Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Mon, 21 Aug 2017 11:00:25 -0400
Subject: [PATCH 2307/4131] drm/amd/display: Enable double buffer when unblank
crtc.
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
index 6a5f268..cc58f43 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
@@ -289,6 +289,9 @@ static void tgn10_unblank_crtc(struct timing_generator *tg)
{
struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
+ REG_UPDATE(OTG_DOUBLE_BUFFER_CONTROL,
+ OTG_BLANK_DATA_DOUBLE_BUFFER_EN, 1);
+
REG_UPDATE_2(OTG_BLANK_CONTROL,
OTG_BLANK_DATA_EN, 0,
OTG_BLANK_DE_MODE, 0);
--
2.7.4
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