From a8a3bd41dc313f157e370c8bbc5b2b07f1720ee2 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Sat, 19 Aug 2017 00:30:55 +0300
Subject: [PATCH] BACKPORT: FROMLIST: v4l: Add support for
 V4L2_BUF_TYPE_META_OUTPUT

The V4L2_BUF_TYPE_META_OUTPUT mirrors the V4L2_BUF_TYPE_META_CAPTURE with
the exception that it is an OUTPUT type. The use case for this is to pass
buffers to the device that are not image data but metadata. The formats,
just as the metadata capture formats, are typically device specific and
highly structured.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
(am from https://patchwork.linuxtv.org/patch/43308/)

 Conflicts:
        drivers/media/v4l2-core/v4l2-ioctl.c
        include/media/v4l2-ioctl.h

BUG=b:66317170
TEST=compile

Change-Id: I86495fe82bf8dbddbc40f0ee1eb8e21145f427d3
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/676768
Reviewed-by: Ricky Liang <jcliang@chromium.org>
---
 include/uapi/linux/videodev2.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index b45a23899e65..ce988cfe3157 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -147,6 +147,7 @@ enum v4l2_buf_type {
 	V4L2_BUF_TYPE_SDR_CAPTURE          = 11,
 	V4L2_BUF_TYPE_SDR_OUTPUT           = 12,
 	V4L2_BUF_TYPE_META_CAPTURE         = 13,
+	V4L2_BUF_TYPE_META_OUTPUT	   = 14,
 	/* Deprecated, do not use */
 	V4L2_BUF_TYPE_PRIVATE              = 0x80,
 };
@@ -444,6 +445,7 @@ struct v4l2_capability {
 #define V4L2_CAP_READWRITE              0x01000000  /* read/write systemcalls */
 #define V4L2_CAP_ASYNCIO                0x02000000  /* async I/O */
 #define V4L2_CAP_STREAMING              0x04000000  /* streaming I/O ioctls */
+#define V4L2_CAP_META_OUTPUT		0x08000000  /* Is a metadata output device */
 
 #define V4L2_CAP_TOUCH                  0x10000000  /* Is a touch device */
 
-- 
2.7.4