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/* The industrial I/O core - character device related
*
* 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.
*/
#ifndef _IIO_CHRDEV_H_
#define _IIO_CHRDEV_H_
/**
* struct iio_handler - Structure used to specify file operations
* for a particular chrdev
* @chrdev: character device structure
* @id: the location in the handler table - used for deallocation.
* @flags: file operations related flags including busy flag.
* @private: handler specific data used by the fileops registered with
* the chrdev.
*/
struct iio_handler {
struct cdev chrdev;
int id;
unsigned long flags;
void *private;
};
#define iio_cdev_to_handler(cd) \
container_of(cd, struct iio_handler, chrdev)
/**
* struct iio_event_data - The actual event being pushed to userspace
* @id: event identifier
* @timestamp: best estimate of time of event occurrence (often from
* the interrupt handler)
*/
struct iio_event_data {
int id;
s64 timestamp;
};
#define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int)
#endif
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