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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 Cameron37044322013-09-08 14:57:00 +010033 enum iio_shared_by shared_by,
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010034 struct device *dev,
35 struct list_head *attr_list);
Lars-Peter Clausen84088eb2013-10-07 12:50:00 +010036void iio_free_chan_devattr_list(struct list_head *attr_list);
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010037
Lars-Peter Clausen3661f3f2013-10-07 15:11:00 +010038ssize_t iio_format_value(char *buf, unsigned int type, int val, int val2);
39
Jonathan Camerondf9c1c42011-08-12 17:56:03 +010040/* Event interface flags */
41#define IIO_BUSY_BIT_POS 1
Jonathan Cameron1aa04272011-08-30 12:32:47 +010042
Jonathan Cameronf2a96242011-09-21 11:15:55 +010043#ifdef CONFIG_IIO_BUFFER
Jonathan Cameron1aa04272011-08-30 12:32:47 +010044struct poll_table_struct;
45
Jonathan Cameron14555b12011-09-21 11:15:57 +010046unsigned int iio_buffer_poll(struct file *filp,
47 struct poll_table_struct *wait);
48ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
49 size_t n, loff_t *f_ps);
Jonathan Cameron1aa04272011-08-30 12:32:47 +010050
51
Jonathan Cameron14555b12011-09-21 11:15:57 +010052#define iio_buffer_poll_addr (&iio_buffer_poll)
53#define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)
Jonathan Cameron1aa04272011-08-30 12:32:47 +010054
Lars-Peter Clausena87c82e2013-09-18 21:02:00 +010055void iio_disable_all_buffers(struct iio_dev *indio_dev);
Lars-Peter Clausend2f0a482013-10-04 12:07:00 +010056void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
Lars-Peter Clausena87c82e2013-09-18 21:02:00 +010057
Jonathan Cameron1aa04272011-08-30 12:32:47 +010058#else
59
Jonathan Cameron14555b12011-09-21 11:15:57 +010060#define iio_buffer_poll_addr NULL
61#define iio_buffer_read_first_n_outer_addr NULL
Jonathan Cameron1aa04272011-08-30 12:32:47 +010062
Lars-Peter Clausena87c82e2013-09-18 21:02:00 +010063static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
Lars-Peter Clausend2f0a482013-10-04 12:07:00 +010064static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
Lars-Peter Clausena87c82e2013-09-18 21:02:00 +010065
Jonathan Cameron1aa04272011-08-30 12:32:47 +010066#endif
67
Lars-Peter Clausen0a769a92012-01-03 14:59:38 +010068int iio_device_register_eventset(struct iio_dev *indio_dev);
69void iio_device_unregister_eventset(struct iio_dev *indio_dev);
Lars-Peter Clausend2f0a482013-10-04 12:07:00 +010070void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
Lars-Peter Clausen0a769a92012-01-03 14:59:38 +010071int iio_event_getfd(struct iio_dev *indio_dev);
72
Jonathan Cameron1aa04272011-08-30 12:32:47 +010073#endif