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