AC97_CAR
acu_reg_write(sc, AC97_CAR, 0);
if (!acu_codec_ready(sc) || (acu_reg_read(sc, AC97_CAR) & CAR_CAIP))
acu_reg_write(sc, AC97_CAR, 0);
if (!acu_codec_ready(sc) || (acu_reg_read(sc, AC97_CAR) & CAR_CAIP)) {
acu_reg_write(sc, AC97_CAR, 0);
acu_reg_write(sc, AC97_CAR, 0);