V4L/DVB: V4L: Events: Add new ioctls for events

This patch adds a set of new ioctls to the V4L2 API. The ioctls conform to
V4L2 Events RFC version 2.3:

<URL:http://www.spinics.net/lists/linux-media/msg12033.html>

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index e878056952c7..0f627c5b986b 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1637,6 +1637,29 @@ struct v4l2_streamparm {
 };
 
 /*
+ *      E V E N T S
+ */
+
+struct v4l2_event {
+        __u32                           type;
+        union {
+                __u8                    data[64];
+        } u;
+        __u32                           pending;
+        __u32                           sequence;
+        struct timespec                 timestamp;
+        __u32                           reserved[9];
+};
+
+struct v4l2_event_subscription {
+        __u32                           type;
+        __u32                           reserved[7];
+};
+
+#define V4L2_EVENT_ALL                          0
+#define V4L2_EVENT_PRIVATE_START                0x08000000
+
+/*
  *      A D V A N C E D   D E B U G G I N G
  *
  *      NOTE: EXPERIMENTAL API, NEVER RELY ON THIS IN APPLICATIONS!
@@ -1758,6 +1781,9 @@ struct v4l2_dbg_chip_ident {
 #define VIDIOC_QUERY_DV_PRESET  _IOR('V',  86, struct v4l2_dv_preset)
 #define VIDIOC_S_DV_TIMINGS     _IOWR('V', 87, struct v4l2_dv_timings)
 #define VIDIOC_G_DV_TIMINGS     _IOWR('V', 88, struct v4l2_dv_timings)
+#define VIDIOC_DQEVENT           _IOR('V', 89, struct v4l2_event)
+#define VIDIOC_SUBSCRIBE_EVENT   _IOW('V', 90, struct v4l2_event_subscription)
+#define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription)
 
 /* Reminder: when adding new ioctls please add support for them to
    drivers/media/video/v4l2-compat-ioctl32.c as well! */