include/linux/iio/trigger_consumer.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* The industrial I/O core, trigger consumer functions
   3  *
   4  * Copyright (c) 2008-2011 Jonathan Cameron
   5  */
   6
   7 #ifndef __LINUX_IIO_TRIGGER_CONSUMER_H__
   8 #define __LINUX_IIO_TRIGGER_CONSUMER_H__
   9
  10 #include <linux/interrupt.h>
  11 #include <linux/types.h>
  12
  13 struct iio_dev;
  14 struct iio_trigger;
  15
  16 /**
  17  * struct iio_poll_func - poll function pair
  18  *
  19  * @indio_dev:                  data specific to device (passed into poll func)
  20  * @h:                          the function that is actually run on trigger
  21  * @thread:                     threaded interrupt part
  22  * @type:                       the type of interrupt (basically if oneshot)
  23  * @name:                       name used to identify the trigger consumer.
  24  * @irq:                        the corresponding irq as allocated from the
  25  *                              trigger pool
  26  * @timestamp:                  some devices need a timestamp grabbed as soon
  27  *                              as possible after the trigger - hence handler
  28  *                              passes it via here.
  29  **/
  30 struct iio_poll_func {
  31         struct iio_dev *indio_dev;
  32         irqreturn_t (*h)(int irq, void *p);
  33         irqreturn_t (*thread)(int irq, void *p);
  34         int type;
  35         char *name;
  36         int irq;
  37         s64 timestamp;
  38 };
  39
  40
  41 __printf(5, 6) struct iio_poll_func
  42 *iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
  43                     irqreturn_t (*thread)(int irq, void *p),
  44                     int type,
  45                     struct iio_dev *indio_dev,
  46                     const char *fmt,
  47                     ...);
  48 void iio_dealloc_pollfunc(struct iio_poll_func *pf);
  49 irqreturn_t iio_pollfunc_store_time(int irq, void *p);
  50
  51 void iio_trigger_notify_done(struct iio_trigger *trig);
  52
  53 #endif