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authorSakari Ailus <sakari.ailus@maxwell.research.nokia.com>2010-03-23 09:25:26 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-05-19 12:58:04 -0300
commit1babcb460f2b87c20eb6860b9685a0dab636cc4b (patch)
treeaaffa67ec3b3fc958ea2d7eea50e1b67242f2645 /include/media/v4l2-dev.h
parent96d8eab5d0a1a9741a4cae1b3c125d75d1aabedf (diff)
V4L/DVB: V4L: File handles
This patch adds a list of v4l2_fh structures to every video_device. It allows using file handle related information in V4L2. The event interface is one example of such use. The use of v4l2_fh is not mandatory for drivers. Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/v4l2-dev.h')
-rw-r--r--include/media/v4l2-dev.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 2dee93892ea2..bebe44b03e0f 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -32,6 +32,7 @@ struct v4l2_device;
Drivers can clear this flag if they want to block all future
device access. It is cleared by video_unregister_device. */
#define V4L2_FL_REGISTERED (0)
+#define V4L2_FL_USES_V4L2_FH (1)
struct v4l2_file_operations {
struct module *owner;
@@ -77,6 +78,10 @@ struct video_device
/* attribute to differentiate multiple indices on one physical device */
int index;
+ /* V4L2 file handles */
+ spinlock_t fh_lock; /* Lock for all v4l2_fhs */
+ struct list_head fh_list; /* List of struct v4l2_fh */
+
int debug; /* Activates debug level*/
/* Video standard vars */