LXR linux/drivers/iio/iio_core

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2
   3/* The industrial I/O core, trigger consumer handling functions
   4 *
   5 * Copyright (c) 2008 Jonathan Cameron
   6 */
   7
   8#ifdef CONFIG_IIO_TRIGGER
   9/**
  10 * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
  11 * @indio_dev: iio_dev associated with the device that will consume the trigger
  12 *
  13 * Return 0 if successful, negative otherwise
  14 **/
  15int iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
  16
  17/**
  18 * iio_device_unregister_trigger_consumer() - reverse the registration process
  19 * @indio_dev: iio_dev associated with the device that consumed the trigger
  20 **/
  21void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev);
  22
  23
  24int iio_trigger_attach_poll_func(struct iio_trigger *trig,
  25                                 struct iio_poll_func *pf);
  26int iio_trigger_detach_poll_func(struct iio_trigger *trig,
  27                                 struct iio_poll_func *pf);
  28
  29#else
  30
  31/**
  32 * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
  33 * @indio_dev: iio_dev associated with the device that will consume the trigger
  34 **/
  35static inline int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
  36{
  37        return 0;
  38}
  39
  40/**
  41 * iio_device_unregister_trigger_consumer() - reverse the registration process
  42 * @indio_dev: iio_dev associated with the device that consumed the trigger
  43 **/
  44static inline void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
  45{
  46}
  47
  48static inline int iio_trigger_attach_poll_func(struct iio_trigger *trig,
  49                                               struct iio_poll_func *pf)
  50{
  51        return 0;
  52}
  53static inline int iio_trigger_detach_poll_func(struct iio_trigger *trig,
  54                                               struct iio_poll_func *pf)
  55{
  56        return 0;
  57}
  58
  59#endif /* CONFIG_TRIGGER_CONSUMER */
  60