forked from Minki/linux
e64506bf69
Oddly enough the noop function is an int-return. This one seems to be void. This change converts it to int, because we want to change how groups are registered. With that change this function could error out with -ENOMEM. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20210215104043.91251-10-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* The industrial I/O core, trigger consumer handling functions
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*
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* Copyright (c) 2008 Jonathan Cameron
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*/
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#ifdef CONFIG_IIO_TRIGGER
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/**
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* iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
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* @indio_dev: iio_dev associated with the device that will consume the trigger
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*
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* Return 0 if successful, negative otherwise
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**/
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int iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
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/**
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* iio_device_unregister_trigger_consumer() - reverse the registration process
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* @indio_dev: iio_dev associated with the device that consumed the trigger
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**/
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void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev);
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int iio_trigger_attach_poll_func(struct iio_trigger *trig,
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struct iio_poll_func *pf);
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int iio_trigger_detach_poll_func(struct iio_trigger *trig,
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struct iio_poll_func *pf);
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#else
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/**
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* iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
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* @indio_dev: iio_dev associated with the device that will consume the trigger
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**/
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static inline int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
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{
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return 0;
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}
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/**
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* iio_device_unregister_trigger_consumer() - reverse the registration process
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* @indio_dev: iio_dev associated with the device that consumed the trigger
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**/
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static inline void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
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{
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}
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static inline int iio_trigger_attach_poll_func(struct iio_trigger *trig,
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struct iio_poll_func *pf)
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{
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return 0;
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}
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static inline int iio_trigger_detach_poll_func(struct iio_trigger *trig,
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struct iio_poll_func *pf)
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{
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return 0;
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}
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#endif /* CONFIG_TRIGGER_CONSUMER */
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