61 строка
1.6 KiB
C
61 строка
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/* The industrial I/O core, trigger consumer functions
|
|
*
|
|
* Copyright (c) 2008-2011 Jonathan Cameron
|
|
*/
|
|
|
|
#ifndef __LINUX_IIO_TRIGGER_CONSUMER_H__
|
|
#define __LINUX_IIO_TRIGGER_CONSUMER_H__
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/types.h>
|
|
|
|
struct iio_dev;
|
|
struct iio_trigger;
|
|
|
|
/**
|
|
* struct iio_poll_func - poll function pair
|
|
*
|
|
* @indio_dev: data specific to device (passed into poll func)
|
|
* @h: the function that is actually run on trigger
|
|
* @thread: threaded interrupt part
|
|
* @type: the type of interrupt (basically if oneshot)
|
|
* @name: name used to identify the trigger consumer.
|
|
* @irq: the corresponding irq as allocated from the
|
|
* trigger pool
|
|
* @timestamp: some devices need a timestamp grabbed as soon
|
|
* as possible after the trigger - hence handler
|
|
* passes it via here.
|
|
**/
|
|
struct iio_poll_func {
|
|
struct iio_dev *indio_dev;
|
|
irqreturn_t (*h)(int irq, void *p);
|
|
irqreturn_t (*thread)(int irq, void *p);
|
|
int type;
|
|
char *name;
|
|
int irq;
|
|
s64 timestamp;
|
|
};
|
|
|
|
|
|
struct iio_poll_func
|
|
*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
|
|
irqreturn_t (*thread)(int irq, void *p),
|
|
int type,
|
|
struct iio_dev *indio_dev,
|
|
const char *fmt,
|
|
...);
|
|
void iio_dealloc_pollfunc(struct iio_poll_func *pf);
|
|
irqreturn_t iio_pollfunc_store_time(int irq, void *p);
|
|
|
|
void iio_trigger_notify_done(struct iio_trigger *trig);
|
|
|
|
/*
|
|
* Two functions for common case where all that happens is a pollfunc
|
|
* is attached and detached from a trigger
|
|
*/
|
|
int iio_triggered_buffer_postenable(struct iio_dev *indio_dev);
|
|
int iio_triggered_buffer_predisable(struct iio_dev *indio_dev);
|
|
|
|
#endif
|