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-rw-r--r--include/linux/iio/buffer_impl.h5
-rw-r--r--include/linux/iio/iio-opaque.h2
-rw-r--r--include/uapi/linux/iio/buffer.h10
3 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/iio/buffer_impl.h b/include/linux/iio/buffer_impl.h
index 768b90c64412..245b32918ae1 100644
--- a/include/linux/iio/buffer_impl.h
+++ b/include/linux/iio/buffer_impl.h
@@ -6,6 +6,8 @@
#ifdef CONFIG_IIO_BUFFER
+#include <uapi/linux/iio/buffer.h>
+
struct iio_dev;
struct iio_buffer;
@@ -72,6 +74,9 @@ struct iio_buffer {
/** @length: Number of datums in buffer. */
unsigned int length;
+ /** @flags: File ops flags including busy flag. */
+ unsigned long flags;
+
/** @bytes_per_datum: Size of individual datum including timestamp. */
size_t bytes_per_datum;
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h
index b6ebc04af3e7..32addd5e790e 100644
--- a/include/linux/iio/iio-opaque.h
+++ b/include/linux/iio/iio-opaque.h
@@ -9,6 +9,7 @@
* @event_interface: event chrdevs associated with interrupt lines
* @attached_buffers: array of buffers statically attached by the driver
* @attached_buffers_cnt: number of buffers in the array of statically attached buffers
+ * @buffer_ioctl_handler: ioctl() handler for this IIO device's buffer interface
* @buffer_list: list of all buffers currently attached
* @channel_attr_list: keep track of automatically created channel
* attributes
@@ -28,6 +29,7 @@ struct iio_dev_opaque {
struct iio_event_interface *event_interface;
struct iio_buffer **attached_buffers;
unsigned int attached_buffers_cnt;
+ struct iio_ioctl_handler *buffer_ioctl_handler;
struct list_head buffer_list;
struct list_head channel_attr_list;
struct attribute_group chan_attr_group;
diff --git a/include/uapi/linux/iio/buffer.h b/include/uapi/linux/iio/buffer.h
new file mode 100644
index 000000000000..13939032b3f6
--- /dev/null
+++ b/include/uapi/linux/iio/buffer.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* industrial I/O buffer definitions needed both in and out of kernel
+ */
+
+#ifndef _UAPI_IIO_BUFFER_H_
+#define _UAPI_IIO_BUFFER_H_
+
+#define IIO_BUFFER_GET_FD_IOCTL _IOWR('i', 0x91, int)
+
+#endif /* _UAPI_IIO_BUFFER_H_ */