otus_cmd
int otus_cmd(struct otus_softc *, uint8_t, const void *, int,
error = otus_cmd(sc, AR_CMD_FREQ_STRAT, NULL, 0, NULL);
error = otus_cmd(sc, code, &cmd, sizeof cmd, &rsp);
error = otus_cmd(sc, AR_CMD_EKEY, &key, sizeof key, NULL);
(void)otus_cmd(sc, AR_CMD_EKEY, &key, sizeof key, NULL);
(void)otus_cmd(sc, AR_CMD_DKEY, &uid, sizeof uid, NULL);
if (otus_cmd(sc, AR_CMD_ECHO, &in, sizeof in, &out) != 0) {
error = otus_cmd(sc, AR_CMD_WREG, sc->write_buf,
error = otus_cmd(sc, AR_CMD_RREG, regs, sizeof regs, eep);