[media] videodev2: Add V4L2_BUF_FLAG_LAST

This v4l2_buffer flag can be used by drivers to mark a capture buffer
as the last generated buffer, for example after a V4L2_DEC_CMD_STOP
command was issued.

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/trace/events/v4l2.h b/include/trace/events/v4l2.h
index 20112170ff11..89d0497c058a 100644
--- a/include/trace/events/v4l2.h
+++ b/include/trace/events/v4l2.h
@@ -83,7 +83,8 @@ SHOW_FIELD
                 { V4L2_BUF_FLAG_TIMESTAMP_MASK,      "TIMESTAMP_MASK" },      \
                 { V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN,   "TIMESTAMP_UNKNOWN" },   \
                 { V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, "TIMESTAMP_MONOTONIC" }, \
-                { V4L2_BUF_FLAG_TIMESTAMP_COPY,      "TIMESTAMP_COPY" })
+                { V4L2_BUF_FLAG_TIMESTAMP_COPY,      "TIMESTAMP_COPY" },      \
+                { V4L2_BUF_FLAG_LAST,                "LAST" })
 
 #define show_timecode_flags(flags)                                        \
         __print_flags(flags, "|",                                         \
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index fa376f7666ba..0f5a4673f3e4 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -810,6 +810,8 @@ struct v4l2_buffer {
 #define V4L2_BUF_FLAG_TSTAMP_SRC_MASK           0x00070000
 #define V4L2_BUF_FLAG_TSTAMP_SRC_EOF            0x00000000
 #define V4L2_BUF_FLAG_TSTAMP_SRC_SOE            0x00010000
+/* mem2mem encoder/decoder */
+#define V4L2_BUF_FLAG_LAST                      0x00100000
 
 /**
  * struct v4l2_exportbuffer - export of video buffer as DMABUF file descriptor