drivers/staging/comedi/comedi_usb.h

   1 /*
   2  * comedi_usb.h
   3  * header file for USB Comedi drivers
   4  *
   5  * COMEDI - Linux Control and Measurement Device Interface
   6  * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #ifndef _COMEDI_USB_H
  20 #define _COMEDI_USB_H
  21
  22 #include <linux/usb.h>
  23
  24 #include "comedidev.h"
  25
  26 struct usb_interface *comedi_to_usb_interface(struct comedi_device *);
  27 struct usb_device *comedi_to_usb_dev(struct comedi_device *);
  28
  29 int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *,
  30                            unsigned long context);
  31 void comedi_usb_auto_unconfig(struct usb_interface *);
  32
  33 int comedi_usb_driver_register(struct comedi_driver *, struct usb_driver *);
  34 void comedi_usb_driver_unregister(struct comedi_driver *, struct usb_driver *);
  35
  36 /**
  37  * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
  38  * @__comedi_driver: comedi_driver struct
  39  * @__usb_driver: usb_driver struct
  40  *
  41  * Helper macro for comedi USB drivers which do not do anything special
  42  * in module init/exit. This eliminates a lot of boilerplate. Each
  43  * module may only use this macro once, and calling it replaces
  44  * module_init() and module_exit()
  45  */
  46 #define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
  47         module_driver(__comedi_driver, comedi_usb_driver_register, \
  48                         comedi_usb_driver_unregister, &(__usb_driver))
  49
  50 #endif /* _COMEDI_USB_H */