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 16 int __iio_add_chan_devattr(const char *postfix, 17 struct iio_chan_spec const *chan, 18 ssize_t (*func)(struct device *dev, 19 struct device_attribute *attr, 20 char *buf), 21 ssize_t (*writefunc)(struct device *dev, 22 struct device_attribute *attr, 23 const char *buf, 24 size_t len), 25 u64 mask, 26 bool generic, 27 struct device *dev, 28 struct list_head *attr_list); 29 30 /* Event interface flags */ 31 #define IIO_BUSY_BIT_POS 1 32 33 #ifdef CONFIG_IIO_BUFFER 34 struct poll_table_struct; 35 36 unsigned int iio_buffer_poll(struct file *filp, 37 struct poll_table_struct *wait); 38 ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, 39 size_t n, loff_t *f_ps); 40 41 42 #define iio_buffer_poll_addr (&iio_buffer_poll) 43 #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) 44 45 #else 46 47 #define iio_buffer_poll_addr NULL 48 #define iio_buffer_read_first_n_outer_addr NULL 49 50 #endif 51 52 int iio_device_register_eventset(struct iio_dev *indio_dev); 53 void iio_device_unregister_eventset(struct iio_dev *indio_dev); 54 int iio_event_getfd(struct iio_dev *indio_dev); 55 56 #endif 57