projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| df9c1c42 JC |
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 indvidual | |
| 10 | * drivers. | |
| 11 | */ | |
| 12 | ||
| 1aa04278 JC |
13 | #ifndef _IIO_CORE_H_ |
| 14 | #define _IIO_CORE_H_ | |
| 15 | ||
| df9c1c42 JC |
16 | /** |
| 17 | * iio_device_get_chrdev_minor() - get an unused minor number | |
| 18 | **/ | |
| 19 | int iio_device_get_chrdev_minor(void); | |
| 20 | void iio_device_free_chrdev_minor(int val); | |
| 21 | ||
| 22 | ||
| 23 | /** | |
| 24 | * iio_put() - internal module reference count reduce | |
| 25 | **/ | |
| 26 | void iio_put(void); | |
| 27 | ||
| 28 | /** | |
| 29 | * iio_get() - internal module reference count increase | |
| 30 | **/ | |
| 31 | void iio_get(void); | |
| 32 | ||
| 33 | extern dev_t iio_devt; | |
| 34 | ||
| 35 | int __iio_add_chan_devattr(const char *postfix, | |
| 36 | const char *group, | |
| 37 | struct iio_chan_spec const *chan, | |
| 38 | ssize_t (*func)(struct device *dev, | |
| 39 | struct device_attribute *attr, | |
| 40 | char *buf), | |
| 41 | ssize_t (*writefunc)(struct device *dev, | |
| 42 | struct device_attribute *attr, | |
| 43 | const char *buf, | |
| 44 | size_t len), | |
| 45 | int mask, | |
| 46 | bool generic, | |
| 47 | struct device *dev, | |
| 48 | struct list_head *attr_list); | |
| 49 | ||
| 50 | /* Event interface flags */ | |
| 51 | #define IIO_BUSY_BIT_POS 1 | |
| 1aa04278 JC |
52 | |
| 53 | #ifdef CONFIG_IIO_RING_BUFFER | |
| 54 | struct poll_table_struct; | |
| 55 | ||
| 56 | void iio_chrdev_ring_open(struct iio_dev *indio_dev); | |
| 57 | void iio_chrdev_ring_release(struct iio_dev *indio_dev); | |
| 58 | ||
| 59 | unsigned int iio_ring_poll(struct file *filp, | |
| 60 | struct poll_table_struct *wait); | |
| 61 | ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf, | |
| 62 | size_t n, loff_t *f_ps); | |
| 63 | ||
| 64 | ||
| 65 | #define iio_ring_poll_addr (&iio_ring_poll) | |
| 66 | #define iio_ring_read_first_n_outer_addr (&iio_ring_read_first_n_outer) | |
| 67 | ||
| 68 | #else | |
| 69 | ||
| 70 | static inline void iio_chrdev_ring_open(struct iio_dev *indio_dev) | |
| 71 | {} | |
| 72 | static inline void iio_chrdev_ring_release(struct iio_dev *indio_dev) | |
| 73 | {} | |
| 74 | ||
| 75 | #define iio_ring_poll_addr NULL | |
| 76 | #define iio_ring_read_first_n_outer_addr NULL | |
| 77 | ||
| 78 | #endif | |
| 79 | ||
| 80 | #endif |