From 476d4af22cec8a9ebc90137712e5ab7070b7379d Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Fri, 3 Oct 2014 17:25:00 +0100 Subject: iio: inkern: add iio_read_channel_average_raw Add iio_read_channel_average_raw to support reading averaged raw values in consumer drivers. Signed-off-by: Sebastian Reichel Signed-off-by: Jonathan Cameron --- include/linux/iio/consumer.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 2752b1fd12be..651f9a0e2765 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -122,6 +122,19 @@ struct iio_channel int iio_read_channel_raw(struct iio_channel *chan, int *val); +/** + * iio_read_channel_average_raw() - read from a given channel + * @chan: The channel being queried. + * @val: Value read back. + * + * Note raw reads from iio channels are in adc counts and hence + * scale will need to be applied if standard units required. + * + * In opposit to the normal iio_read_channel_raw this function + * returns the average of multiple reads. + */ +int iio_read_channel_average_raw(struct iio_channel *chan, int *val); + /** * iio_read_channel_processed() - read processed value from a given channel * @chan: The channel being queried. -- cgit v1.2.3