linux-imx

/* The industrial I/O core function defs.

 *

 * Copyright (c) 2008 Jonathan Cameron

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 as published by

 * the Free Software Foundation.

 *

 * These definitions are meant for use only within the IIO core, not individual

 * drivers.

 */

​

#ifndef _IIO_CORE_H_

#define _IIO_CORE_H_

#include <linux/kernel.h>

#include <linux/device.h>

​

struct iio_chan_spec;

struct iio_dev;

​

extern struct device_type iio_device_type;

​

int __iio_add_chan_devattr(const char *postfix,

               struct iio_chan_spec const *chan,

               ssize_t (*func)(struct device *dev,

                       struct device_attribute *attr,

                       char *buf),

               ssize_t (*writefunc)(struct device *dev,

                        struct device_attribute *attr,

                        const char *buf,

                        size_t len),

               u64 mask,

               enum iio_shared_by shared_by,

               struct device *dev,

               struct list_head *attr_list);

void iio_free_chan_devattr_list(struct list_head *attr_list);

​

ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);

​

/* Event interface flags */

#define IIO_BUSY_BIT_POS 1

​

#ifdef CONFIG_IIO_BUFFER

struct poll_table_struct;

​

__poll_t iio_buffer_poll(struct file *filp,

                 struct poll_table_struct *wait);

ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,

                      size_t n, loff_t *f_ps);

​

int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);

void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);

​

#define iio_buffer_poll_addr (&iio_buffer_poll)

#define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)

​

void iio_disable_all_buffers(struct iio_dev *indio_dev);

void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);

​

#else

​

#define iio_buffer_poll_addr NULL

#define iio_buffer_read_first_n_outer_addr NULL