1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /* The industrial I/O core function defs.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (c) 2008 Jonathan Cameron
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * These definitions are meant for use only within the IIO core, not individual
7*4882a593Smuzhiyun * drivers.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #ifndef _IIO_CORE_H_
11*4882a593Smuzhiyun #define _IIO_CORE_H_
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun #include <linux/device.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun struct iio_chan_spec;
16*4882a593Smuzhiyun struct iio_dev;
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun extern struct device_type iio_device_type;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun int __iio_add_chan_devattr(const char *postfix,
21*4882a593Smuzhiyun struct iio_chan_spec const *chan,
22*4882a593Smuzhiyun ssize_t (*func)(struct device *dev,
23*4882a593Smuzhiyun struct device_attribute *attr,
24*4882a593Smuzhiyun char *buf),
25*4882a593Smuzhiyun ssize_t (*writefunc)(struct device *dev,
26*4882a593Smuzhiyun struct device_attribute *attr,
27*4882a593Smuzhiyun const char *buf,
28*4882a593Smuzhiyun size_t len),
29*4882a593Smuzhiyun u64 mask,
30*4882a593Smuzhiyun enum iio_shared_by shared_by,
31*4882a593Smuzhiyun struct device *dev,
32*4882a593Smuzhiyun struct list_head *attr_list);
33*4882a593Smuzhiyun void iio_free_chan_devattr_list(struct list_head *attr_list);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun /* Event interface flags */
38*4882a593Smuzhiyun #define IIO_BUSY_BIT_POS 1
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun #ifdef CONFIG_IIO_BUFFER
41*4882a593Smuzhiyun struct poll_table_struct;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun __poll_t iio_buffer_poll(struct file *filp,
44*4882a593Smuzhiyun struct poll_table_struct *wait);
45*4882a593Smuzhiyun ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
46*4882a593Smuzhiyun size_t n, loff_t *f_ps);
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
49*4882a593Smuzhiyun void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun #define iio_buffer_poll_addr (&iio_buffer_poll)
52*4882a593Smuzhiyun #define iio_buffer_read_outer_addr (&iio_buffer_read_outer)
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun void iio_disable_all_buffers(struct iio_dev *indio_dev);
55*4882a593Smuzhiyun void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun #else
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #define iio_buffer_poll_addr NULL
60*4882a593Smuzhiyun #define iio_buffer_read_outer_addr NULL
61*4882a593Smuzhiyun
iio_buffer_alloc_sysfs_and_mask(struct iio_dev * indio_dev)62*4882a593Smuzhiyun static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
iio_buffer_free_sysfs_and_mask(struct iio_dev * indio_dev)67*4882a593Smuzhiyun static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
68*4882a593Smuzhiyun
iio_disable_all_buffers(struct iio_dev * indio_dev)69*4882a593Smuzhiyun static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
iio_buffer_wakeup_poll(struct iio_dev * indio_dev)70*4882a593Smuzhiyun static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun #endif
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun int iio_device_register_eventset(struct iio_dev *indio_dev);
75*4882a593Smuzhiyun void iio_device_unregister_eventset(struct iio_dev *indio_dev);
76*4882a593Smuzhiyun void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
77*4882a593Smuzhiyun int iio_event_getfd(struct iio_dev *indio_dev);
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun struct iio_event_interface;
80*4882a593Smuzhiyun bool iio_event_enabled(const struct iio_event_interface *ev_int);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun #endif
83