From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Tue, 5 Jun 2018 13:14:13 -0400
Subject: drm/amd/display: separate out wm change request dcn workaround
Git-commit: 7144d3cfff7d8b0d98d9d25ee42c674491e31bc9
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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_hubbub.c       |   11 ++++++-----
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h       |    2 ++
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c |    3 +++
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c     |    1 +
 drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h         |    1 +
 5 files changed, 13 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
@@ -190,6 +190,12 @@ static uint32_t convert_and_clamp(
 }
 
 
+void hubbub1_wm_change_req_wa(struct hubbub *hubbub)
+{
+	REG_UPDATE_SEQ(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
+			DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0, 1);
+}
+
 void hubbub1_program_watermarks(
 		struct hubbub *hubbub,
 		struct dcn_watermark_set *watermarks,
@@ -203,8 +209,6 @@ void hubbub1_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 */
@@ -459,9 +463,6 @@ void hubbub1_program_watermarks(
 			watermarks->d.cstate_pstate.pstate_change_ns, prog_wm_value);
 	}
 
-	REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
-			DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
-
 	REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
 			DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
 	REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
@@ -195,6 +195,8 @@ void hubbub1_update_dchub(
 bool hubbub1_verify_allow_pstate_change_high(
 	struct hubbub *hubbub);
 
+void hubbub1_wm_change_req_wa(struct hubbub *hubbub);
+
 void hubbub1_program_watermarks(
 		struct hubbub *hubbub,
 		struct dcn_watermark_set *watermarks,
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2305,6 +2305,9 @@ static void dcn10_apply_ctx_for_surface(
 		hubbub1_program_watermarks(dc->res_pool->hubbub,
 				&context->bw.dcn.watermarks, ref_clk_mhz, true);
 
+		if (dc->hwseq->wa.DEGVIDCN10_254)
+			hubbub1_wm_change_req_wa(dc->res_pool->hubbub);
+
 		if (dc->debug.sanity_checks) {
 			/* pstate stuck check after watermark update */
 			dcn10_verify_allow_pstate_change_high(dc);
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
@@ -743,6 +743,7 @@ static struct dce_hwseq *dcn10_hwseq_cre
 		hws->masks = &hwseq_mask;
 		hws->wa.DEGVIDCN10_253 = true;
 		hws->wa.false_optc_underflow = true;
+		hws->wa.DEGVIDCN10_254 = true;
 	}
 	return hws;
 }
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -44,6 +44,7 @@ struct dce_hwseq_wa {
 	bool blnd_crtc_trigger;
 	bool DEGVIDCN10_253;
 	bool false_optc_underflow;
+	bool DEGVIDCN10_254;
 };
 
 struct hwseq_wa_state {