snd_cs46xx_clear_BA1
int snd_cs46xx_clear_BA1(struct snd_cs46xx *chip, unsigned long offset, unsigned long len);
snd_cs46xx_clear_BA1(chip, DSP_PARAMETER_BYTE_OFFSET,
snd_cs46xx_clear_BA1(chip, DSP_SAMPLE_BYTE_OFFSET,
snd_cs46xx_clear_BA1(chip, DSP_CODE_BYTE_OFFSET, DSP_CODE_BYTE_SIZE);
snd_cs46xx_clear_BA1(chip, DSP_PARAMETER_BYTE_OFFSET, DSP_PARAMETER_BYTE_SIZE);
snd_cs46xx_clear_BA1(chip, DSP_SAMPLE_BYTE_OFFSET, DSP_SAMPLE_BYTE_SIZE);
snd_cs46xx_clear_BA1(chip, DSP_CODE_BYTE_OFFSET, DSP_CODE_BYTE_SIZE);