From 7c39739caf0e5ad5a702d597c5b2330e63ba32af Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Mon, 21 May 2018 04:54:26 -0400
Subject: [PATCH 1/4] BACKPORT: media: uapi/linux/media.h: add request API

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>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
(cherry picked from commit 66431c0bab0fb8bdd62930575869bea98eb2baf0)
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
---
 include/uapi/linux/media.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index b9b9446..99084f1 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -413,5 +413,13 @@ struct media_v2_topology {
 #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        _IOR ('|', 0x05, int)
+
+/*
+ * These ioctls are called on 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)
 
 #endif /* __LINUX_MEDIA_H */
-- 
2.16.4