drm/amd/display: MPC updates

Fix update_mpcc logic to only call assert_mpcc_idle_before_connect
if mpcc is not already being used (and required removal).
Update set_out_rate_control to include optional flow control parameter.
In init_mpcc_from_hw check for case where bot_sel is same as mpcc_id.
Signed-off-by: Eric Bernstein <eric.bernstein@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_hw_sequencer.c

@@ -1923,7 +1923,7 @@ static void update_mpcc(struct dc *dc, struct pipe_ctx *pipe_ctx)
 	/* remove MPCC if being used */
 	if (new_mpcc != NULL)
 		mpc->funcs->remove_mpcc(mpc, mpc_tree_params, new_mpcc);
-
+	else
 		if (dc->debug.sanity_checks)
 			mpc->funcs->assert_mpcc_idle_before_connect(
 					dc->res_pool->mpc, mpcc_id);

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

@@ -300,11 +300,11 @@ void mpc1_remove_mpcc(
 
 		if (temp_mpcc && temp_mpcc->mpcc_bot == mpcc_to_remove) {
 			found = true;
+			temp_mpcc->mpcc_bot = mpcc_to_remove->mpcc_bot;
 			if (mpcc_to_remove->mpcc_bot) {
 				/* remove MPCC in middle of list */
 				REG_SET(MPCC_BOT_SEL[temp_mpcc->mpcc_id], 0,
 						MPCC_BOT_SEL, mpcc_to_remove->mpcc_bot->mpcc_id);
-				temp_mpcc->mpcc_bot = mpcc_to_remove->mpcc_bot;
 			} else {
 				/* remove MPCC from bottom of list */
 				REG_SET(MPCC_BOT_SEL[temp_mpcc->mpcc_id], 0,
@@ -374,6 +374,9 @@ void mpc1_init_mpcc_list_from_hw(
 			REG_GET(MPCC_TOP_SEL[mpcc_id], MPCC_TOP_SEL, &top_sel);
 			REG_GET(MPCC_BOT_SEL[mpcc_id],  MPCC_BOT_SEL, &bot_sel);
 
+			if (bot_sel == mpcc_id)
+				bot_sel = 0xf;
+
 			if ((opp_id == tree->opp_id) && (top_sel != 0xf)) {
 				mpcc = mpc1_get_mpcc(mpc, mpcc_id);
 				mpcc->dpp_id = top_sel;