AC_ADC_FIFOC
val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
CODEC_WRITE(sc, AC_ADC_FIFOC(sc), val | ADC_FIFOC_FIFO_FLUSH);
CODEC_WRITE(sc, AC_ADC_FIFOC(sc),
val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
CODEC_WRITE(sc, AC_ADC_FIFOC(sc), val | ADC_FIFOC_DRQ_EN);
val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
CODEC_WRITE(sc, AC_ADC_FIFOC(sc), val | ADC_FIFOC_FIFO_FLUSH);
val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
CODEC_WRITE(sc, AC_ADC_FIFOC(sc), val & ~ADC_FIFOC_DRQ_EN);
device_printf(dev, "AC_ADC_FIFOC: %08x\n", CODEC_READ(sc, AC_ADC_FIFOC(sc)));