si_notify_smc_display_change
si_notify_smc_display_change(adev, cfg->num_display > 0);
ret = si_notify_smc_display_change(adev, false);
si_notify_smc_display_change(rdev, rdev->pm.dpm.new_active_crtc_count > 0);
ret = si_notify_smc_display_change(rdev, false);