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authorSebastian Reichel <sre@debian.org>2014-10-03 17:25:00 +0100
committerJonathan Cameron <jic23@kernel.org>2014-03-16 18:00:33 +0000
commit476d4af22cec8a9ebc90137712e5ab7070b7379d (patch)
tree3da0d92e3e37b9a37e0184d5bf8d10a9e2a7d60c /include/linux/iio
parentc0a6b7ee9498269e4bf9a7e6676f2f45edca2f1a (diff)
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 <sre@debian.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio')
-rw-r--r--include/linux/iio/consumer.h13
1 files changed, 13 insertions, 0 deletions
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
@@ -123,6 +123,19 @@ 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.
* @val: Value read back.