1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* The industrial I/O core function defs.
*
* Copyright (c) 2008 Jonathan Cameron
*
* These definitions are meant for use only within the IIO core, not individual
* drivers.
*/
#ifndef _IIO_CORE_H_
#define _IIO_CORE_H_
#include <linux/kernel.h>
#include <linux/device.h>
struct iio_buffer;
struct iio_chan_spec;
struct iio_dev;
extern struct device_type iio_device_type;
struct iio_dev_buffer_pair {
struct iio_dev *indio_dev;
struct iio_buffer *buffer;
};
#define IIO_IOCTL_UNHANDLED 1
struct iio_ioctl_handler {
struct list_head entry;
long (*ioctl)(struct iio_dev *indio_dev, struct file *filp,
unsigned int cmd, unsigned long arg);
};
long iio_device_ioctl(struct iio_dev *indio_dev, struct file *filp,
unsigned int cmd, unsigned long arg);
void iio_device_ioctl_handler_register(struct iio_dev *indio_dev,
struct iio_ioctl_handler *h);
void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h);
int __iio_add_chan_devattr(const char *postfix,
struct iio_chan_spec const *chan,
ssize_t (*func)(struct device *dev,
struct device_attribute *attr,
char *buf),
ssize_t (*writefunc)(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len),
u64 mask,
enum iio_shared_by shared_by,
struct device *dev,
struct iio_buffer *buffer,
struct list_head *attr_list);
void iio_free_chan_devattr_list(struct list_head *attr_list);
int iio_device_register_sysfs_group(struct iio_dev *indio_dev,
const struct attribute_group *group);
ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
/* Event interface flags */
#define IIO_BUSY_BIT_POS 1
#ifdef CONFIG_IIO_BUFFER
struct poll_table_struct;
__poll_t iio_buffer_poll_wrapper(struct file *filp,
struct poll_table_struct *wait);
ssize_t iio_buffer_read_wrapper(struct file *filp, char __user *buf,
size_t n, loff_t *f_ps);
ssize_t iio_buffer_write_wrapper(struct file *filp, const char __user *buf,
size_t n, loff_t *f_ps);
int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev);
#define iio_buffer_poll_addr (&iio_buffer_poll_wrapper)
#define iio_buffer_read_outer_addr (&iio_buffer_read_wrapper)
#define iio_buffer_write_outer_addr (&iio_buffer_write_wrapper)
void iio_disable_all_buffers(struct iio_dev *indio_dev);
void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
void iio_device_detach_buffers(struct iio_dev *indio_dev);
#else
#define iio_buffer_poll_addr NULL
#define iio_buffer_read_outer_addr NULL
#define iio_buffer_write_outer_addr NULL
static inline int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
{
return 0;
}
static inline void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
static inline void iio_device_detach_buffers(struct iio_dev *indio_dev) {}
#endif
int iio_device_register_eventset(struct iio_dev *indio_dev);
void iio_device_unregister_eventset(struct iio_dev *indio_dev);
void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
struct iio_event_interface;
bool iio_event_enabled(const struct iio_event_interface *ev_int);
#endif
|
