snd_nm256_writew
snd_nm256_writew(chip, NM_INT_REG, 0x8000);
#define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
snd_nm256_writew(chip, base + reg, val);
snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
snd_nm256_writew(chip, 0x214, 0);