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Commit 5fb21c82 authored Dec 05, 2011 by Jonathan Cameron Committed by Greg Kroah-Hartman Dec 08, 2011

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



Useful for getting to the channel based on scan mask alone.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 94386ab0

drivers/staging/iio/iio.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/staging/iio/industrialio-core.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -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