[PATCH v14 01/36] uapi/linux/media.h: add request API

[Sakari Ailus <sakari.ailus@linux.intel.com>]

From: Hans Verkuil <hans.verkuil@cisco.com>

Define the public request API.

This adds the new MEDIA_IOC_REQUEST_ALLOC ioctl to allocate a request
and two ioctls that operate on a request in order to queue the
contents of the request to the driver and to re-initialize the
request.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
 include/uapi/linux/media.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index c7e9a5cba24ed..32883d4d22b22 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -342,11 +342,23 @@ struct media_v2_topology {
 
 /* ioctls */
 
+struct __attribute__ ((packed)) media_request_alloc {
+	__s32 fd;
+};
+
 #define MEDIA_IOC_DEVICE_INFO	_IOWR('|', 0x00, struct media_device_info)
 #define MEDIA_IOC_ENUM_ENTITIES	_IOWR('|', 0x01, struct media_entity_desc)
 #define MEDIA_IOC_ENUM_LINKS	_IOWR('|', 0x02, struct media_links_enum)
 #define MEDIA_IOC_SETUP_LINK	_IOWR('|', 0x03, struct media_link_desc)
 #define MEDIA_IOC_G_TOPOLOGY	_IOWR('|', 0x04, struct media_v2_topology)
+#define MEDIA_IOC_REQUEST_ALLOC	_IOWR('|', 0x05, struct media_request_alloc)
+
+/*
+ * These ioctls are called from the request file descriptor as returned
+ * by MEDIA_IOC_REQUEST_ALLOC.
+ */
+#define MEDIA_REQUEST_IOC_QUEUE		_IO('|',  0x80)
+#define MEDIA_REQUEST_IOC_REINIT	_IO('|',  0x81)
 
 #if !defined(__KERNEL__) || defined(__NEED_MEDIA_LEGACY_API)
 
-- 
2.11.0