MICRO_SELECT_PREAMPLI_MASK 830 sound/pci/vx222/vx222_ops.c chip->regSELMIC &= ~MICRO_SELECT_PREAMPLI_MASK; MICRO_SELECT_PREAMPLI_MASK 831 sound/pci/vx222/vx222_ops.c chip->regSELMIC |= (preamp << MICRO_SELECT_PREAMPLI_OFFSET) & MICRO_SELECT_PREAMPLI_MASK;