pm_phc_impl
static int pm_phc_impl(dev_info_t *, int, int, int);
(void) pm_phc_impl(dip, comp, phc_lvl, 0);
static int pm_phc_impl(dev_info_t *, int, int, int);
return (pm_phc_impl(dip,
ret = pm_phc_impl(dip, comp, level, 1);
ret = pm_phc_impl(dip, comp, level, 1);