1 /* The industrial I/O core function defs.
3 * Copyright (c) 2008 Jonathan Cameron
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.
9 * These definitions are meant for use only within the IIO core, not individual
15 #include <linux/kernel.h>
16 #include <linux/device.h>
21 extern struct device_type iio_device_type;
23 int __iio_add_chan_devattr(const char *postfix,
24 struct iio_chan_spec const *chan,
25 ssize_t (*func)(struct device *dev,
26 struct device_attribute *attr,
28 ssize_t (*writefunc)(struct device *dev,
29 struct device_attribute *attr,
33 enum iio_shared_by shared_by,
35 struct list_head *attr_list);
36 void iio_free_chan_devattr_list(struct list_head *attr_list);
38 ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
40 /* Event interface flags */
41 #define IIO_BUSY_BIT_POS 1
43 #ifdef CONFIG_IIO_BUFFER
44 struct poll_table_struct;
46 unsigned int iio_buffer_poll(struct file *filp,
47 struct poll_table_struct *wait);
48 ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
49 size_t n, loff_t *f_ps);
51 int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
52 void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
54 #define iio_buffer_poll_addr (&iio_buffer_poll)
55 #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)
57 void iio_disable_all_buffers(struct iio_dev *indio_dev);
58 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
62 #define iio_buffer_poll_addr NULL
63 #define iio_buffer_read_first_n_outer_addr NULL
65 static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
70 static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
72 static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
73 static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
77 int iio_device_register_eventset(struct iio_dev *indio_dev);
78 void iio_device_unregister_eventset(struct iio_dev *indio_dev);
79 void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
80 int iio_event_getfd(struct iio_dev *indio_dev);
82 struct iio_event_interface;
83 bool iio_event_enabled(const struct iio_event_interface *ev_int);