snd_es18xx_reg_bits
return snd_es18xx_reg_bits(chip, reg, mask, val) != val;
if (snd_es18xx_reg_bits(chip, left_reg, mask1, val1) != val1)
if (snd_es18xx_reg_bits(chip, right_reg, mask2, val2) != val2)
change = (snd_es18xx_reg_bits(chip, left_reg, mask1 | mask2,