snd_es1688_mixer_write
void snd_es1688_mixer_write(struct snd_es1688 *chip, unsigned char reg, unsigned char data);
snd_es1688_mixer_write(chip, 0x40, 0x01);
snd_es1688_mixer_write(chip, 0x40, cfg);
snd_es1688_mixer_write(chip, ES1688_REC_DEV, nval);
snd_es1688_mixer_write(chip, reg, nval);
snd_es1688_mixer_write(chip, left_reg, val1);
snd_es1688_mixer_write(chip, right_reg, val1);
snd_es1688_mixer_write(chip, left_reg, val1);
snd_es1688_mixer_write(chip, reg, val);
EXPORT_SYMBOL(snd_es1688_mixer_write);
snd_es1688_mixer_write(es1688, 0x40, 0x0b); /* don't change!!! */