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