drm/amd/display: change order of HUBP and MPC disable according to HW guide

blank hubp first before disconnect MPC

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Eric Yang <eric.yang2@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_hw_sequencer.c

@@ -477,9 +477,14 @@ static void reset_front_end(
 	if (mpcc->opp_id == 0xf)
 		return;
 
-	mi->funcs->dcc_control(mi, false, false);
 	tg->funcs->lock(tg);
 
+	mi->funcs->dcc_control(mi, false, false);
+	mi->funcs->set_blank(mi, true);
+	REG_WAIT(DCHUBP_CNTL[fe_idx],
+			HUBP_NO_OUTSTANDING_REQ, 1,
+			1, 200);
+
 	mpcc_cfg.opp_id = 0xf;
 	mpcc_cfg.top_dpp_id = 0xf;
 	mpcc_cfg.bot_mpcc_id = 0xf;
@@ -491,8 +496,7 @@ static void reset_front_end(
 	REG_WAIT(OTG_GLOBAL_SYNC_STATUS[tg->inst], VUPDATE_NO_LOCK_EVENT_OCCURRED, 1, 20000, 200000);
 
 	mpcc->funcs->wait_for_idle(mpcc);
-	mi->funcs->set_blank(mi, true);
-	REG_WAIT(DCHUBP_CNTL[fe_idx], HUBP_NO_OUTSTANDING_REQ, 1, 20000, 200000);
+
 	REG_UPDATE(HUBP_CLK_CNTL[fe_idx], HUBP_CLOCK_ENABLE, 0);
 	REG_UPDATE(DPP_CONTROL[fe_idx], DPP_CLOCK_ENABLE, 0);
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c

@@ -117,7 +117,9 @@ static void dcn10_mpcc_wait_idle(struct mpcc *mpcc)
 {
 	struct dcn10_mpcc *mpcc10 = TO_DCN10_MPCC(mpcc);
 
-	REG_WAIT(MPCC_STATUS, MPCC_BUSY, 0, 1000, 1000);
+	REG_WAIT(MPCC_STATUS,
+			MPCC_BUSY, 0,
+			1000, 1000);
 }