CS8427_REG_UDATABUF
chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS |
err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF,
chip->regmap[CS8427_REG_UDATABUF]);