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Jonathan Camerondf9c1c42011-08-12 17:56:03 +01001/* 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 *
Michael Hennerichcecfb932011-08-30 12:41:10 +01009 * These definitions are meant for use only within the IIO core, not individual
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010010 * drivers.
11 */
12
Jonathan Cameron1aa04272011-08-30 12:32:47 +010013#ifndef _IIO_CORE_H_
14#define _IIO_CORE_H_
Jonathan Cameronef97d422012-04-13 10:24:20 +010015#include <linux/kernel.h>
16#include <linux/device.h>
17
18struct iio_chan_spec;
19struct iio_dev;
20
Guenter Roeck17d82b42013-02-07 17:09:00 +000021extern struct device_type iio_device_type;
Jonathan Cameron1aa04272011-08-30 12:32:47 +010022
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010023int __iio_add_chan_devattr(const char *postfix,
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010024 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),
Jonathan Camerone614a542011-09-02 17:14:41 +010032 u64 mask,
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010033 bool generic,
34 struct device *dev,
35 struct list_head *attr_list);
36
37/* Event interface flags */
38#define IIO_BUSY_BIT_POS 1
Jonathan Cameron1aa04272011-08-30 12:32:47 +010039
Jonathan Cameronf2a96242011-09-21 11:15:55 +010040#ifdef CONFIG_IIO_BUFFER
Jonathan Cameron1aa04272011-08-30 12:32:47 +010041struct poll_table_struct;
42
Jonathan Cameron14555b12011-09-21 11:15:57 +010043unsigned int iio_buffer_poll(struct file *filp,
44 struct poll_table_struct *wait);
45ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
46 size_t n, loff_t *f_ps);
Jonathan Cameron1aa04272011-08-30 12:32:47 +010047
48
Jonathan Cameron14555b12011-09-21 11:15:57 +010049#define iio_buffer_poll_addr (&iio_buffer_poll)
50#define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)
Jonathan Cameron1aa04272011-08-30 12:32:47 +010051
52#else
53
Jonathan Cameron14555b12011-09-21 11:15:57 +010054#define iio_buffer_poll_addr NULL
55#define iio_buffer_read_first_n_outer_addr NULL
Jonathan Cameron1aa04272011-08-30 12:32:47 +010056
57#endif
58
Lars-Peter Clausen0a769a92012-01-03 14:59:38 +010059int iio_device_register_eventset(struct iio_dev *indio_dev);
60void iio_device_unregister_eventset(struct iio_dev *indio_dev);
61int iio_event_getfd(struct iio_dev *indio_dev);
62
Jonathan Cameron1aa04272011-08-30 12:32:47 +010063#endif