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| 1 | /* 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 | * |
| 9 | * These definitions are meant for use only within the IIO core, not individual |
| 10 | * drivers. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _IIO_CORE_H_ |
| 14 | #define _IIO_CORE_H_ |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/device.h> |
| 17 | |
| 18 | struct iio_chan_spec; |
| 19 | struct iio_dev; |
| 20 | |
| 21 | |
| 22 | int __iio_add_chan_devattr(const char *postfix, |
| 23 | struct iio_chan_spec const *chan, |
| 24 | ssize_t (*func)(struct device *dev, |
| 25 | struct device_attribute *attr, |
| 26 | char *buf), |
| 27 | ssize_t (*writefunc)(struct device *dev, |
| 28 | struct device_attribute *attr, |
| 29 | const char *buf, |
| 30 | size_t len), |
| 31 | u64 mask, |
| 32 | bool generic, |
| 33 | struct device *dev, |
| 34 | struct list_head *attr_list); |
| 35 | |
| 36 | /* Event interface flags */ |
| 37 | #define IIO_BUSY_BIT_POS 1 |
| 38 | |
| 39 | #ifdef CONFIG_IIO_BUFFER |
| 40 | struct poll_table_struct; |
| 41 | |
| 42 | unsigned int iio_buffer_poll(struct file *filp, |
| 43 | struct poll_table_struct *wait); |
| 44 | ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, |
| 45 | size_t n, loff_t *f_ps); |
| 46 | |
| 47 | |
| 48 | #define iio_buffer_poll_addr (&iio_buffer_poll) |
| 49 | #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) |
| 50 | |
| 51 | #else |
| 52 | |
| 53 | #define iio_buffer_poll_addr NULL |
| 54 | #define iio_buffer_read_first_n_outer_addr NULL |
| 55 | |
| 56 | #endif |
| 57 | |
| 58 | int iio_device_register_eventset(struct iio_dev *indio_dev); |
| 59 | void iio_device_unregister_eventset(struct iio_dev *indio_dev); |
| 60 | int iio_event_getfd(struct iio_dev *indio_dev); |
| 61 | |
| 62 | #endif |
| 63 |
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