drivers/iio/iio_core_trigger.h

   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 void iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
  14
  15 /**
  16  * iio_device_unregister_trigger_consumer() - reverse the registration process
  17  * @indio_dev: iio_dev associated with the device that consumed the trigger
  18  **/
  19 void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev);
  20
  21
  22 int iio_trigger_attach_poll_func(struct iio_trigger *trig,
  23                                  struct iio_poll_func *pf);
  24 int iio_trigger_detach_poll_func(struct iio_trigger *trig,
  25                                  struct iio_poll_func *pf);
  26
  27 #else
  28
  29 /**
  30  * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
  31  * @indio_dev: iio_dev associated with the device that will consume the trigger
  32  **/
  33 static int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
  34 {
  35         return 0;
  36 }
  37
  38 /**
  39  * iio_device_unregister_trigger_consumer() - reverse the registration process
  40  * @indio_dev: iio_dev associated with the device that consumed the trigger
  41  **/
  42 static void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
  43 {
  44 }
  45
  46 static inline int iio_trigger_attach_poll_func(struct iio_trigger *trig,
  47                                                struct iio_poll_func *pf)
  48 {
  49         return 0;
  50 }
  51 static inline int iio_trigger_detach_poll_func(struct iio_trigger *trig,
  52                                                struct iio_poll_func *pf)
  53 {
  54         return 0;
  55 }
  56
  57 #endif /* CONFIG_TRIGGER_CONSUMER */