AM7930_DREAD
return AM7930_DREAD(sc, AM7930_DREG_DR);
lo = AM7930_DREAD(sc, AM7930_DREG_DR);
hi = AM7930_DREAD(sc, AM7930_DREG_DR);
k = AM7930_DREAD(sc, AM7930_DREG_IR);
*sc->sc_r.data++ = AM7930_DREAD(sc, AM7930_DREG_BBRB);