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authorHans Verkuil <hverkuil@xs4all.nl>2008-12-23 17:42:25 +0100
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-01-02 20:11:19 +0100
commitc7dd09dabc278b03980c8e93d0eee3843b5ad514 (patch)
treec03ba0b990e588da7b34365dc8efe4300e55408a
parentV4L/DVB (10135): v4l2: introduce v4l2_file_operations. (diff)
downloadlinux-c7dd09dabc278b03980c8e93d0eee3843b5ad514.tar.xz
linux-c7dd09dabc278b03980c8e93d0eee3843b5ad514.zip
V4L/DVB (10136): v4l2 doc: update v4l2-framework.txt
Mention the new v4l2_file_operations struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--Documentation/video4linux/v4l2-framework.txt9
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt
index 38d054aa0e0f..3b483c1e0124 100644
--- a/Documentation/video4linux/v4l2-framework.txt
+++ b/Documentation/video4linux/v4l2-framework.txt
@@ -392,13 +392,16 @@ You should also set these fields:
- v4l2_dev: set to the v4l2_device parent device.
- name: set to something descriptive and unique.
-- fops: set to the file_operations struct.
+- fops: set to the v4l2_file_operations struct.
- ioctl_ops: if you use the v4l2_ioctl_ops to simplify ioctl maintenance
(highly recommended to use this and it might become compulsory in the
future!), then set this to your v4l2_ioctl_ops struct.
-If you use v4l2_ioctl_ops, then you should set .unlocked_ioctl to
-__video_ioctl2 or .ioctl to video_ioctl2 in your file_operations struct.
+If you use v4l2_ioctl_ops, then you should set either .unlocked_ioctl or
+.ioctl to video_ioctl2 in your v4l2_file_operations struct.
+
+The v4l2_file_operations struct is a subset of file_operations. The main
+difference is that the inode argument is omitted since it is never used.
video_device registration