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-rw-r--r--include/linux/iio/iio.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 5f2d00e7e488..5629c92eeadf 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -288,6 +288,8 @@ static inline s64 iio_get_time_ns(void)
#define INDIO_ALL_BUFFER_MODES \
(INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE)
+#define INDIO_MAX_RAW_ELEMENTS 4
+
struct iio_trigger; /* forward declaration */
struct iio_dev;
@@ -302,6 +304,14 @@ struct iio_dev;
* the channel in question. Return value will specify the
* type of value returned by the device. val and val2 will
* contain the elements making up the returned value.
+ * @read_raw_multi: function to return values from the device.
+ * mask specifies which value. Note 0 means a reading of
+ * the channel in question. Return value will specify the
+ * type of value returned by the device. vals pointer
+ * contain the elements making up the returned value.
+ * max_len specifies maximum number of elements
+ * vals pointer can contain. val_len is used to return
+ * length of valid elements in vals.
* @write_raw: function to write a value to the device.
* Parameters are the same as for read_raw.
* @write_raw_get_fmt: callback function to query the expected
@@ -328,6 +338,13 @@ struct iio_info {
int *val2,
long mask);
+ int (*read_raw_multi)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int max_len,
+ int *vals,
+ int *val_len,
+ long mask);
+
int (*write_raw)(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val,
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