RTCIIC_RW
sc->sc_rw = RTCIIC_READ(sc) & RTCIIC_RW;
sc->sc_bops.ibo_bits[I2C_BIT_INPUT] = RTCIIC_RW;
device_xname(sc->sc_dev), (bits & RTCIIC_RW) ? "READ" : "WRITE"));
if (sc->sc_rw != (bits & RTCIIC_RW)) {
reg &= ~RTCIIC_RW;
sc->sc_rw = bits & RTCIIC_RW;
if (sc->sc_rw & RTCIIC_RW) {
bits |= RTCIIC_RW;