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| author | David Lechner <dlechner@baylibre.com> | 2023-10-05 19:50:29 -0500 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-10-11 15:54:41 +0100 |
| commit | 5987279373446e97206a7078b2229446ba871ea0 (patch) | |
| tree | 44ee304609996ef11cdd0ef375c7d27f22dc8b57 /include | |
| parent | 86a333c59806bc170156209e9a52c6393d00c652 (diff) | |
| download | lwn-5987279373446e97206a7078b2229446ba871ea0.tar.gz lwn-5987279373446e97206a7078b2229446ba871ea0.zip | |
iio: event: add optional event label support
This adds a new optional field to struct iio_info to allow drivers to
specify a label for the event. This is useful for cases where there are
many events or the event attribute name is not descriptive enough or
where an event doesn't have any other attributes.
The implementation is based on the existing label support for channels.
So either all events of a device have a label attribute or none do.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231005-ad2s1210-mainline-v4-12-ec00746840fc@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iio/iio.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 7bfa1b9bc8a2..d0ce3b71106a 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -427,6 +427,8 @@ struct iio_trigger; /* forward declaration */ * @write_event_config: set if the event is enabled. * @read_event_value: read a configuration value associated with the event. * @write_event_value: write a configuration value for the event. + * @read_event_label: function to request label name for a specified label, + * for better event identification. * @validate_trigger: function to validate the trigger when the * current trigger gets changed. * @update_scan_mode: function to configure device and scan buffer when @@ -511,6 +513,12 @@ struct iio_info { enum iio_event_direction dir, enum iio_event_info info, int val, int val2); + int (*read_event_label)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + enum iio_event_type type, + enum iio_event_direction dir, + char *label); + int (*validate_trigger)(struct iio_dev *indio_dev, struct iio_trigger *trig); int (*update_scan_mode)(struct iio_dev *indio_dev, |