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V4L/DVB (10135): v4l2: introduce v4l2_file_operations.

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Introduce a struct v4l2_file_operations for v4l2 drivers.

Remove the unnecessary inode argument.

Move compat32 handling (and llseek) into the v4l2-dev core: this is now
handled in the v4l2 core and no longer in the drivers themselves.

Note that this changeset reverts an earlier patch that changed the return
type of__video_ioctl2 from int to long. This change will be reinstated
later in a much improved version.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
2008-12-30 06:58:20 -03:00
committed by Mauro Carvalho Chehab
parent dfa9a5ae67
commit bec43661b1
83 changed files with 331 additions and 572 deletions
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15
include/media/v4l2-dev.h
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@@ -25,6 +25,7 @@
#define VFL_TYPE_MAX 4
struct v4l2_ioctl_callbacks;
struct video_device;
struct v4l2_device;
/* Flag to mark the video_device struct as unregistered.
@@ -32,6 +33,18 @@ struct v4l2_device;
device access. It is set by video_unregister_device. */
#define V4L2_FL_UNREGISTERED (0)
struct v4l2_file_operations {
struct module *owner;
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
unsigned int (*poll) (struct file *, struct poll_table_struct *);
int (*ioctl) (struct file *, unsigned int, unsigned long);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*open) (struct file *);
int (*release) (struct file *);
};
/*
* Newer version of video_device, handled by videodev2.c
* This version moves redundant code from video device code to
@@ -41,7 +54,7 @@ struct v4l2_device;
struct video_device
{
/* device ops */
const struct file_operations *fops;
const struct v4l2_file_operations *fops;
/* sysfs */
struct device dev; /* v4l device */