Commit | Line | Data |
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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
df9c1c42 JC |
2 | /* The industrial I/O core function defs. |
3 | * | |
4 | * Copyright (c) 2008 Jonathan Cameron | |
5 | * | |
cecfb931 | 6 | * These definitions are meant for use only within the IIO core, not individual |
df9c1c42 JC |
7 | * drivers. |
8 | */ | |
9 | ||
1aa04278 JC |
10 | #ifndef _IIO_CORE_H_ |
11 | #define _IIO_CORE_H_ | |
ef97d421 JC |
12 | #include <linux/kernel.h> |
13 | #include <linux/device.h> | |
14 | ||
15 | struct iio_chan_spec; | |
16 | struct iio_dev; | |
17 | ||
17d82b47 | 18 | extern struct device_type iio_device_type; |
1aa04278 | 19 | |
df9c1c42 | 20 | int __iio_add_chan_devattr(const char *postfix, |
df9c1c42 JC |
21 | struct iio_chan_spec const *chan, |
22 | ssize_t (*func)(struct device *dev, | |
23 | struct device_attribute *attr, | |
24 | char *buf), | |
25 | ssize_t (*writefunc)(struct device *dev, | |
26 | struct device_attribute *attr, | |
27 | const char *buf, | |
28 | size_t len), | |
e614a54b | 29 | u64 mask, |
3704432f | 30 | enum iio_shared_by shared_by, |
df9c1c42 JC |
31 | struct device *dev, |
32 | struct list_head *attr_list); | |
84088ebd | 33 | void iio_free_chan_devattr_list(struct list_head *attr_list); |
df9c1c42 | 34 | |
9fbfb4b3 | 35 | ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals); |
3661f3f5 | 36 | |
df9c1c42 JC |
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 | ||
afc9a42b | 43 | __poll_t iio_buffer_poll(struct file *filp, |
14555b14 JC |
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 | 47 | |
3e1b6c95 LPC |
48 | int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev); |
49 | void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev); | |
1aa04278 | 50 | |
14555b14 JC |
51 | #define iio_buffer_poll_addr (&iio_buffer_poll) |
52 | #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) | |
1aa04278 | 53 | |
a87c82e4 | 54 | void iio_disable_all_buffers(struct iio_dev *indio_dev); |
d2f0a48f | 55 | void iio_buffer_wakeup_poll(struct iio_dev *indio_dev); |
a87c82e4 | 56 | |
1aa04278 JC |
57 | #else |
58 | ||
14555b14 JC |
59 | #define iio_buffer_poll_addr NULL |
60 | #define iio_buffer_read_first_n_outer_addr NULL | |
1aa04278 | 61 | |
3e1b6c95 LPC |
62 | static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) |
63 | { | |
64 | return 0; | |
65 | } | |
66 | ||
67 | static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {} | |
68 | ||
a87c82e4 | 69 | static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {} |
d2f0a48f | 70 | static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {} |
a87c82e4 | 71 | |
1aa04278 JC |
72 | #endif |
73 | ||
0a769a95 LPC |
74 | int iio_device_register_eventset(struct iio_dev *indio_dev); |
75 | void iio_device_unregister_eventset(struct iio_dev *indio_dev); | |
d2f0a48f | 76 | void iio_device_wakeup_eventset(struct iio_dev *indio_dev); |
0a769a95 LPC |
77 | int iio_event_getfd(struct iio_dev *indio_dev); |
78 | ||
bc2b7dab GB |
79 | struct iio_event_interface; |
80 | bool iio_event_enabled(const struct iio_event_interface *ev_int); | |
81 | ||
1aa04278 | 82 | #endif |