uatp_y_sample
memset(uatp_y_sample(sc), 0, UATP_MAX_Y_SENSORS);
sc->sc_parameters->read_sample(uatp_x_sample(sc), uatp_y_sample(sc),
printf(" %02x", (unsigned int)uatp_y_sample(sc)[i]);
static uint8_t *uatp_y_sample(struct uatp_softc *);