epgpio_read
int epgpio_read(struct epgpio_softc *,epgpio_port, int bit);
ph->ph_status[0] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[0]);
ph->ph_status[1] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[1]);
ph->ph_status[0] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[0]);
ph->ph_status[1] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[1]);
nstatus[0] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[0]);
nstatus[1] = epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_cd[1]);
if (epgpio_read(sc->sc_gpio, ph->ph_port, ph->ph_vs[0])) {
bits |= epgpio_read(sc->sc_gpio, sc->sc_port, sc->sc_sda) << sc->sc_sda;
bits |= epgpio_read(sc->sc_gpio, sc->sc_port, sc->sc_scl) << sc->sc_scl;