AK5365_ATT
sc->shadow[1][AK5365_ATT(0)] = 0x7f;
sc->shadow[1][AK5365_ATT(1)] = 0x7f;
val = envy_codec_read(sc, 1, AK5365_ATT(idx));
envy_codec_write(sc, 1, AK5365_ATT(idx), val);