AC_PINCAP_VREF
pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
if (caps & AC_PINCAP_VREF) {
(caps & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;