diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
index aec9f6d8e47652bcb466f3c79076ede2ea8d9500..620119feb0fd52c7d54bb94dca8969c0468f057e 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c
@@ -167,3 +167,30 @@ int phm_enable_clock_power_gatings(struct pp_hwmgr *hwmgr)
 	}
 	return 0;
 }
+
+int phm_display_configuration_changed(struct pp_hwmgr *hwmgr)
+{
+	if (hwmgr == NULL)
+		return -EINVAL;
+
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+				 PHM_PlatformCaps_TablelessHardwareInterface)) {
+		if (NULL != hwmgr->hwmgr_func->display_config_changed)
+			hwmgr->hwmgr_func->display_config_changed(hwmgr);
+	} else
+		return phm_dispatch_table(hwmgr, &hwmgr->display_configuration_changed, NULL, NULL);
+    return 0;
+}
+
+int phm_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
+{
+	if (hwmgr == NULL)
+		return -EINVAL;
+
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+				 PHM_PlatformCaps_TablelessHardwareInterface))
+		if (NULL != hwmgr->hwmgr_func->display_config_changed)
+			hwmgr->hwmgr_func->notify_smc_display_config_after_ps_adjustment(hwmgr);
+
+    return 0;
+}
diff --git a/drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h b/drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h
index 9795b9ad24c0c8597b02a9bc23ba601166a89596..1d2976000a74c3eb2ad4a39bc0bba2b4e45920d9 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h
@@ -328,4 +328,6 @@ extern int phm_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
 			     const struct pp_power_state *current_ps);
 
 extern int phm_force_dpm_levels(struct pp_hwmgr *hwmgr, enum amd_dpm_forced_level level);
+extern int phm_display_configuration_changed(struct pp_hwmgr *hwmgr);
+extern int phm_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr);
 #endif /* _HARDWARE_MANAGER_H_ */