Commit 5fb21c82 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman

staging:iio:find iio channel from scan index util function

Useful for getting to the channel based on scan mask alone.
Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 94386ab0
......@@ -322,6 +322,14 @@ struct iio_dev {
int groupcounter;
};
/**
* iio_find_channel_from_si() - get channel from its scan index
* @indio_dev: device
* @si: scan index to match
*/
const struct iio_chan_spec
*iio_find_channel_from_si(struct iio_dev *indio_dev, int si);
/**
* iio_device_register() - register a device with the IIO subsystem
* @indio_dev: Device structure filled by the device driver
......
......@@ -89,6 +89,17 @@ static const char * const iio_chan_info_postfix[] = {
= "filter_low_pass_3db_frequency",
};
const struct iio_chan_spec
*iio_find_channel_from_si(struct iio_dev *indio_dev, int si)
{
int i;
for (i = 0; i < indio_dev->num_channels; i++)
if (indio_dev->channels[i].scan_index == si)
return &indio_dev->channels[i];
return NULL;
}
/**
* struct iio_detected_event_list - list element for events that have occurred
* @list: linked list header
......
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