snd_akm4xxx_get_vol
ucontrol->value.integer.value[0] = snd_akm4xxx_get_vol(ak, chip, addr);
if (snd_akm4xxx_get_vol(ak, chip, addr) == nval)
ucontrol->value.integer.value[0] = snd_akm4xxx_get_vol(ak, chip, addr);
ucontrol->value.integer.value[1] = snd_akm4xxx_get_vol(ak, chip, addr+1);