staging:iio: add demux optionally to path from device to buffer
This gives you only what you ask for which is handy
for some devices with weird scan combinations.
Routes all data flow through a core utility function.
That and this demuxing support will be needed to do
demuxing to multiple destinations in kernel.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/iio/buffer.h b/drivers/staging/iio/buffer.h
index 4b8f619..5282441 100644
--- a/drivers/staging/iio/buffer.h
+++ b/drivers/staging/iio/buffer.h
@@ -95,6 +95,8 @@
* @access: [DRIVER] buffer access functions associated with the
* implementation.
* @flags: [INTERN] file ops related flags including busy flag.
+ * @demux_list: [INTERN] list of operations required to demux the scan.
+ * @demux_bounce: [INTERN] buffer for doing gather from incoming scan.
**/
struct iio_buffer {
struct iio_dev *indio_dev;
@@ -115,6 +117,8 @@
bool stufftoread;
unsigned long flags;
const struct attribute_group *attrs;
+ struct list_head demux_list;
+ unsigned char *demux_bounce;
};
/**
@@ -153,6 +157,17 @@
container_of(d, struct iio_buffer, dev)
/**
+ * iio_push_to_buffer() - push to a registered buffer.
+ * @buffer: IIO buffer structure for device
+ * @scan: Full scan.
+ * @timestamp:
+ */
+int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data,
+ s64 timestamp);
+
+int iio_update_demux(struct iio_dev *indio_dev);
+
+/**
* iio_buffer_register() - register the buffer with IIO core
* @indio_dev: device with the buffer to be registered
**/