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df9c1c42 JC |
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 | * | |
cecfb931 | 9 | * These definitions are meant for use only within the IIO core, not individual |
df9c1c42 JC |
10 | * drivers. |
11 | */ | |
12 | ||
1aa04278 JC |
13 | #ifndef _IIO_CORE_H_ |
14 | #define _IIO_CORE_H_ | |
ef97d421 JC |
15 | #include <linux/kernel.h> |
16 | #include <linux/device.h> | |
17 | ||
18 | struct iio_chan_spec; | |
19 | struct iio_dev; | |
20 | ||
17d82b47 | 21 | extern struct device_type iio_device_type; |
1aa04278 | 22 | |
df9c1c42 | 23 | int __iio_add_chan_devattr(const char *postfix, |
df9c1c42 JC |
24 | struct iio_chan_spec const *chan, |
25 | ssize_t (*func)(struct device *dev, | |
26 | struct device_attribute *attr, | |
27 | char *buf), | |
28 | ssize_t (*writefunc)(struct device *dev, | |
29 | struct device_attribute *attr, | |
30 | const char *buf, | |
31 | size_t len), | |
e614a54b | 32 | u64 mask, |
df9c1c42 JC |
33 | bool generic, |
34 | struct device *dev, | |
35 | struct list_head *attr_list); | |
36 | ||
37 | /* Event interface flags */ | |
38 | #define IIO_BUSY_BIT_POS 1 | |
1aa04278 | 39 | |
f2a96245 | 40 | #ifdef CONFIG_IIO_BUFFER |
1aa04278 JC |
41 | struct poll_table_struct; |
42 | ||
14555b14 JC |
43 | unsigned int iio_buffer_poll(struct file *filp, |
44 | struct poll_table_struct *wait); | |
45 | ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, | |
46 | size_t n, loff_t *f_ps); | |
1aa04278 JC |
47 | |
48 | ||
14555b14 JC |
49 | #define iio_buffer_poll_addr (&iio_buffer_poll) |
50 | #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) | |
1aa04278 | 51 | |
a87c82e4 LPC |
52 | void iio_disable_all_buffers(struct iio_dev *indio_dev); |
53 | ||
1aa04278 JC |
54 | #else |
55 | ||
14555b14 JC |
56 | #define iio_buffer_poll_addr NULL |
57 | #define iio_buffer_read_first_n_outer_addr NULL | |
1aa04278 | 58 | |
a87c82e4 LPC |
59 | static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {} |
60 | ||
1aa04278 JC |
61 | #endif |
62 | ||
0a769a95 LPC |
63 | int iio_device_register_eventset(struct iio_dev *indio_dev); |
64 | void iio_device_unregister_eventset(struct iio_dev *indio_dev); | |
65 | int iio_event_getfd(struct iio_dev *indio_dev); | |
66 | ||
1aa04278 | 67 | #endif |