Some devices requires indicator if the buffer is the last one in the stream.
Applications and drivers can use this flag in such case.

Signed-off-by: Andrzej Hajda <redacted>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
  Documentation/DocBook/media/v4l/io.xml          |    7 +++++++
  Documentation/DocBook/media/v4l/vidioc-qbuf.xml |    2 ++
  include/linux/videodev2.h                       |    1 +
  3 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml
index fd6aca2..dcbf1e0 100644
--- a/Documentation/DocBook/media/v4l/io.xml
+++ b/Documentation/DocBook/media/v4l/io.xml

@@ -956,6 +956,13 @@ Typically applications shall use this flag for output buffers if the data
  in this buffer has not been created by the CPU but by some DMA-capable unit,
  in which case caches have not been used.</entry>
  	  </row>
+	  <row>
+	    <entry><constant>V4L2_BUF_FLAG_EOS</constant></entry>
+	    <entry>0x2000</entry>
+	    <entry>Application should set this flag in the output buffer
+in order to inform the driver about the last frame of the stream. Some
+drivers may require it to properly finish processing the stream.</entry>

+	  </row>
  	</tbody>
        </tgroup>
      </table>

diff --git a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
index 9caa49a..ad49f7d 100644
--- a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml

@@ -76,6 +76,8 @@ supports capturing from specific video inputs and you want to specify a video
  input, then <structfield>flags</structfield> should be set to
  <constant>V4L2_BUF_FLAG_INPUT</constant> and the field
  <structfield>input</structfield> must be initialized to the desired input.
+Some drivers expects applications set <constant>V4L2_BUF_FLAG_EOS</constant>
+flag on the last buffer of the stream.
  The <structfield>reserved</structfield> field must be set to 0. When using
  the <link linkend="planar-apis">multi-planar API</link>, the
  <structfield>m.planes</structfield> field must contain a userspace pointer

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 370d111..e44a7cd 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h

@@ -676,6 +676,7 @@ struct v4l2_buffer {
  /* Cache handling flags */
  #define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE	0x0800
  #define V4L2_BUF_FLAG_NO_CACHE_CLEAN		0x1000
+#define V4L2_BUF_FLAG_EOS	0x2000	/* The last buffer in the stream */
  
  /*
   *	O V E R L A Y   P R E V I E W