staging:iio: add a callback buffer for in kernel push interface
This callback buffer is meant to be opaque to users, but basically
adds a very simple pass through buffer to which data may be
pushed when it is inserted into the buffer list.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index fc937ac..65ae734 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -20,6 +20,12 @@
if IIO_BUFFER
+config IIO_BUFFER_CB
+boolean "IIO callback buffer used for push in-kernel interfaces"
+ help
+ Should be selected by any drivers that do-inkernel push
+ usage. That is, those where the data is pushed to the consumer.
+
config IIO_KFIFO_BUF
select IIO_TRIGGER
tristate "Industrial I/O buffering based on kfifo"