phm_get_performance_level
result = phm_get_performance_level(hwmgr, state, PHM_PerformanceLevelDesignation_Activity, 0, &performance_level);
result = phm_get_performance_level(hwmgr, state, designation,
extern int phm_get_performance_level(struct pp_hwmgr *hwmgr, const struct pp_hw_power_state *state,