drm/amd/powerplay: allow slow switch only if NBPState enabled v2

Otherwise there may be potential SMU performance issues.

v2: fix commit description and coding style
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Rex Zhu <rex.zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -3801,7 +3801,8 @@ static int vega10_notify_smc_display_config_after_ps_adjustment(
 	struct pp_display_clock_request clock_req;
 
 	if ((hwmgr->display_config->num_display > 1) &&
-	     !hwmgr->display_config->multi_monitor_in_sync)
+	     !hwmgr->display_config->multi_monitor_in_sync &&
+	     !hwmgr->display_config->nb_pstate_switch_disable)
 		vega10_notify_smc_display_change(hwmgr, false);
 	else
 		vega10_notify_smc_display_change(hwmgr, true);

drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c

@@ -1389,7 +1389,8 @@ static int vega12_notify_smc_display_config_after_ps_adjustment(
 	struct pp_display_clock_request clock_req;
 
 	if ((hwmgr->display_config->num_display > 1) &&
-		!hwmgr->display_config->multi_monitor_in_sync)
+	     !hwmgr->display_config->multi_monitor_in_sync &&
+	     !hwmgr->display_config->nb_pstate_switch_disable)
 		vega12_notify_smc_display_change(hwmgr, false);
 	else
 		vega12_notify_smc_display_change(hwmgr, true);