drm/amd/display: clear mpc_tree in init_pipes

[Why]
During init_pipes, otg master is not initialized. So mpc tree is
still configured even if mpc bottom is not active

[How]
For pipes that have tg enabled, check their mpc tree and clear
opp_list if mpc bottom is not active
Reviewed-by: George Shen <george.shen@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Samson Tam <samson.tam@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c

@@ -1366,6 +1366,7 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context)
 	struct dce_hwseq *hws = dc->hwseq;
 	struct hubbub *hubbub = dc->res_pool->hubbub;
 	bool can_apply_seamless_boot = false;
+	bool tg_enabled[MAX_PIPES] = {false};
 
 	for (i = 0; i < context->stream_count; i++) {
 		if (context->streams[i]->apply_seamless_boot_optimization) {
@@ -1447,6 +1448,7 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context)
 			// requesting data while in PSR.
 			tg->funcs->tg_init(tg);
 			hubp->power_gated = true;
+			tg_enabled[i] = true;
 			continue;
 		}
 
@@ -1488,6 +1490,20 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context)
 		tg->funcs->tg_init(tg);
 	}
 
+	/* Clean up MPC tree */
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		if (tg_enabled[i]) {
+			if (dc->res_pool->opps[i]->mpc_tree_params.opp_list) {
+				if (dc->res_pool->opps[i]->mpc_tree_params.opp_list->mpcc_bot) {
+					int bot_id = dc->res_pool->opps[i]->mpc_tree_params.opp_list->mpcc_bot->mpcc_id;
+
+					if ((bot_id < MAX_MPCC) && (bot_id < MAX_PIPES) && (!tg_enabled[bot_id]))
+						dc->res_pool->opps[i]->mpc_tree_params.opp_list = NULL;
+				}
+			}
+		}
+	}
+
 	/* Power gate DSCs */
 	if (hws->funcs.dsc_pg_control != NULL) {
 		uint32_t num_opps = 0;

drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c

@@ -720,6 +720,7 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context)
 	struct hubbub *hubbub = dc->res_pool->hubbub;
 	struct pg_cntl *pg_cntl = dc->res_pool->pg_cntl;
 	bool can_apply_seamless_boot = false;
+	bool tg_enabled[MAX_PIPES] = {false};
 
 	for (i = 0; i < context->stream_count; i++) {
 		if (context->streams[i]->apply_seamless_boot_optimization) {
@@ -801,6 +802,7 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context)
 			// requesting data while in PSR.
 			tg->funcs->tg_init(tg);
 			hubp->power_gated = true;
+			tg_enabled[i] = true;
 			continue;
 		}
 
@@ -842,6 +844,20 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context)
 		tg->funcs->tg_init(tg);
 	}
 
+	/* Clean up MPC tree */
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		if (tg_enabled[i]) {
+			if (dc->res_pool->opps[i]->mpc_tree_params.opp_list) {
+				if (dc->res_pool->opps[i]->mpc_tree_params.opp_list->mpcc_bot) {
+					int bot_id = dc->res_pool->opps[i]->mpc_tree_params.opp_list->mpcc_bot->mpcc_id;
+
+					if ((bot_id < MAX_MPCC) && (bot_id < MAX_PIPES) && (!tg_enabled[bot_id]))
+						dc->res_pool->opps[i]->mpc_tree_params.opp_list = NULL;
+				}
+			}
+		}
+	}
+
 	if (pg_cntl != NULL) {
 		if (pg_cntl->funcs->dsc_pg_control != NULL) {
 			uint32_t num_opps = 0;