From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Thu, 3 Aug 2017 15:46:10 -0400
Subject: drm/amd/display: Clear water mark change request bit before
programing.
Git-commit: cbb4d72e290df8fedc764c7abb823cae938a45aa
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -320,6 +320,9 @@ static void program_watermarks(
*/
uint32_t prog_wm_value;
+ REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
+ DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
+
/* Repeat for water mark set A, B, C and D. */
/* clock state A */
prog_wm_value = convert_and_clamp(watermarks->a.urgent_ns,
@@ -518,8 +521,7 @@ static void program_watermarks(
REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
- REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
- DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0);
+
REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,