PCMMIO_AO_CMD_CHAN_SEL 631 drivers/staging/comedi/drivers/pcmmio.c cmd |= PCMMIO_AO_CMD_CHAN_SEL(chan - 4); PCMMIO_AO_CMD_CHAN_SEL 634 drivers/staging/comedi/drivers/pcmmio.c cmd |= PCMMIO_AO_CMD_CHAN_SEL(chan);