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From b31adff8e8d54767550ed24480639a59abee3e4d Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Tue, 22 Aug 2017 15:03:06 -0400
Subject: [PATCH 1089/4131] drm/amd/display: Remove mpc from bios left over,
keep double buffer disabled.
Change-Id: Ife3ff042c9f70a6e8c08f0e5a395117de04eed14
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>
Acked-by: Tim Writer <Tim.Writer@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
index 52f2f2d..707aab0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
@@ -127,10 +127,18 @@ static void mpc10_mpcc_remove(
for (z_idx = 0; z_idx < opp->mpc_tree.num_pipes; z_idx++)
if (opp->mpc_tree.dpp[z_idx] == dpp_id)
break;
+
if (z_idx == opp->mpc_tree.num_pipes) {
- ASSERT(0);
+ /* In case of resume from S3/S4, remove mpcc from bios left over */
+ REG_SET(MPCC_OPP_ID[dpp_id], 0,
+ MPCC_OPP_ID, 0xf);
+ REG_SET(MPCC_TOP_SEL[dpp_id], 0,
+ MPCC_TOP_SEL, 0xf);
+ REG_SET(MPCC_BOT_SEL[dpp_id], 0,
+ MPCC_BOT_SEL, 0xf);
return;
}
+
mpcc_id = opp->mpc_tree.mpcc[z_idx];
REG_SET(MPCC_OPP_ID[mpcc_id], 0,
--
2.7.4
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