1. 根目录:
2. drivers
3. staging
4. comedi
5. comedilib.h

/*
    linux/include/comedilib.h
    header file for kcomedilib

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
*/

#ifndef _LINUX_COMEDILIB_H
#define _LINUX_COMEDILIB_H

struct comedi_device *comedi_open(const char *path);
int comedi_close(struct comedi_device *dev);
int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
			  unsigned int chan, unsigned int *io);
int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
		      unsigned int chan, unsigned int io);
int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
			 unsigned int mask, unsigned int *bits,
			 unsigned int base_channel);
int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
				  unsigned int subd);
int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);

#endif