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| author | Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> | 2010-03-23 13:25:26 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-19 17:58:04 +0200 |
| commit | 1babcb460f2b87c20eb6860b9685a0dab636cc4b (patch) | |
| tree | aaffa67ec3b3fc958ea2d7eea50e1b67242f2645 /include/media/v4l2-dev.h | |
| parent | V4L/DVB: [v5,2/2] v4l: Add a mem-to-mem videobuf framework test device (diff) | |
| download | linux-1babcb460f2b87c20eb6860b9685a0dab636cc4b.tar.xz linux-1babcb460f2b87c20eb6860b9685a0dab636cc4b.zip | |
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.h | 5 |
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 */ |