LXR linux/drivers/comedi/comedi

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _COMEDI_INTERNAL_H
   3#define _COMEDI_INTERNAL_H
   4
   5#include <linux/compiler.h>
   6#include <linux/types.h>
   7
   8/*
   9 * various internal comedi stuff
  10 */
  11
  12struct comedi_buf_map;
  13struct comedi_devconfig;
  14struct comedi_device;
  15struct comedi_insn;
  16struct comedi_rangeinfo;
  17struct comedi_subdevice;
  18struct device;
  19
  20int do_rangeinfo_ioctl(struct comedi_device *dev,
  21                       struct comedi_rangeinfo *it);
  22struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device);
  23void comedi_release_hardware_device(struct device *hardware_device);
  24int comedi_alloc_subdevice_minor(struct comedi_subdevice *s);
  25void comedi_free_subdevice_minor(struct comedi_subdevice *s);
  26
  27int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
  28                     unsigned long new_size);
  29void comedi_buf_reset(struct comedi_subdevice *s);
  30bool comedi_buf_is_mmapped(struct comedi_subdevice *s);
  31void comedi_buf_map_get(struct comedi_buf_map *bm);
  32int comedi_buf_map_put(struct comedi_buf_map *bm);
  33int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,
  34                          void *buf, int len, int write);
  35struct comedi_buf_map *
  36comedi_buf_map_from_subdev_get(struct comedi_subdevice *s);
  37unsigned int comedi_buf_write_n_available(struct comedi_subdevice *s);
  38unsigned int comedi_buf_write_n_allocated(struct comedi_subdevice *s);
  39void comedi_device_cancel_all(struct comedi_device *dev);
  40bool comedi_can_auto_free_spriv(struct comedi_subdevice *s);
  41
  42extern unsigned int comedi_default_buf_size_kb;
  43extern unsigned int comedi_default_buf_maxsize_kb;
  44
  45/* drivers.c */
  46
  47extern struct comedi_driver *comedi_drivers;
  48extern struct mutex comedi_drivers_list_lock;
  49
  50int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,
  51               struct comedi_insn *insn, unsigned int *data);
  52
  53void comedi_device_detach(struct comedi_device *dev);
  54int comedi_device_attach(struct comedi_device *dev,
  55                         struct comedi_devconfig *it);
  56
  57#ifdef CONFIG_PROC_FS
  58
  59/* proc.c */
  60
  61void comedi_proc_init(void);
  62void comedi_proc_cleanup(void);
  63#else
  64static inline void comedi_proc_init(void)
  65{
  66}
  67
  68static inline void comedi_proc_cleanup(void)
  69{
  70}
  71#endif
  72
  73#endif /* _COMEDI_INTERNAL_H */
  74