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1 | /* The industrial I/O core function defs. |
2 | * |
3 | * Copyright (c) 2008 Jonathan Cameron |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it |
6 | * under the terms of the GNU General Public License version 2 as published by |
7 | * the Free Software Foundation. |
8 | * |
9 | * These definitions are meant for use only within the IIO core, not individual |
10 | * drivers. |
11 | */ |
12 | |
13 | #ifndef _IIO_CORE_H_ |
14 | #define _IIO_CORE_H_ |
15 | #include <linux/kernel.h> |
16 | #include <linux/device.h> |
17 | |
18 | struct iio_chan_spec; |
19 | struct iio_dev; |
20 | |
21 | |
22 | int __iio_add_chan_devattr(const char *postfix, |
23 | struct iio_chan_spec const *chan, |
24 | ssize_t (*func)(struct device *dev, |
25 | struct device_attribute *attr, |
26 | char *buf), |
27 | ssize_t (*writefunc)(struct device *dev, |
28 | struct device_attribute *attr, |
29 | const char *buf, |
30 | size_t len), |
31 | u64 mask, |
32 | bool generic, |
33 | struct device *dev, |
34 | struct list_head *attr_list); |
35 | |
36 | /* Event interface flags */ |
37 | #define IIO_BUSY_BIT_POS 1 |
38 | |
39 | #ifdef CONFIG_IIO_BUFFER |
40 | struct poll_table_struct; |
41 | |
42 | unsigned int iio_buffer_poll(struct file *filp, |
43 | struct poll_table_struct *wait); |
44 | ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, |
45 | size_t n, loff_t *f_ps); |
46 | |
47 | |
48 | #define iio_buffer_poll_addr (&iio_buffer_poll) |
49 | #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) |
50 | |
51 | #else |
52 | |
53 | #define iio_buffer_poll_addr NULL |
54 | #define iio_buffer_read_first_n_outer_addr NULL |
55 | |
56 | #endif |
57 | |
58 | int iio_device_register_eventset(struct iio_dev *indio_dev); |
59 | void iio_device_unregister_eventset(struct iio_dev *indio_dev); |
60 | int iio_event_getfd(struct iio_dev *indio_dev); |
61 | |
62 | #endif |
63 |
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