MPII_DOORBELL_STATE
if (mpii_wait_ne(sc, MPII_DOORBELL, MPII_DOORBELL_STATE,
switch (db & MPII_DOORBELL_STATE) {
if (mpii_wait_ne(sc, MPII_DOORBELL, MPII_DOORBELL_STATE,
if (mpii_wait_eq(sc, MPII_DOORBELL, MPII_DOORBELL_STATE,
if (mpii_wait_eq(sc, MPII_DOORBELL, MPII_DOORBELL_STATE,
mpii_read_db(sc) & MPII_DOORBELL_STATE);