blob: 8cc254fac16a4444f7d5ad1f190215913c2aca0d [file] [log] [blame]
* Copyright (C) 2015 Cogent Embedded, Inc.
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/iio/iio.h>
#include <linux/iio/triggered_event.h>
#include <linux/iio/trigger_consumer.h>
* iio_triggered_event_setup() - Setup pollfunc_event for triggered event
* @indio_dev: IIO device structure
* @h: Function which will be used as pollfunc_event top half
* @thread: Function which will be used as pollfunc_event bottom half
* This function combines some common tasks which will normally be performed
* when setting up a triggered event. It will allocate the pollfunc_event and
* set mode to use it for triggered event.
* Before calling this function the indio_dev structure should already be
* completely initialized, but not yet registered. In practice this means that
* this function should be called right before iio_device_register().
* To free the resources allocated by this function call
* iio_triggered_event_cleanup().
int iio_triggered_event_setup(struct iio_dev *indio_dev,
irqreturn_t (*h)(int irq, void *p),
irqreturn_t (*thread)(int irq, void *p))
indio_dev->pollfunc_event = iio_alloc_pollfunc(h,
if (indio_dev->pollfunc_event == NULL)
return -ENOMEM;
/* Flag that events polling is possible */
indio_dev->modes |= INDIO_EVENT_TRIGGERED;
return 0;
* iio_triggered_event_cleanup() - Free resources allocated by iio_triggered_event_setup()
* @indio_dev: IIO device structure
void iio_triggered_event_cleanup(struct iio_dev *indio_dev)
indio_dev->modes &= ~INDIO_EVENT_TRIGGERED;
MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("IIO helper functions for setting up triggered events");