Drivers that use v4l2_device can set that as parent pointer in the v4l2_dev
field instead of using the struct device parent field.
This allows v4l2-dev.c to check whether this driver is v4l2_device based,
and if so then it can offer additional services.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
#include <asm/system.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
#define VIDEO_NUM_DEVICES 256
#define VIDEO_NAME "video4linux"
vdev->vfl_type = type;
vdev->cdev = NULL;
+ if (vdev->v4l2_dev)
+ vdev->parent = vdev->v4l2_dev->dev;
/* Part 2: find a free minor, kernel number and device index. */
#ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES
#define VFL_TYPE_MAX 4
struct v4l2_ioctl_callbacks;
+struct v4l2_device;
/* Flag to mark the video_device struct as unregistered.
Drivers can set this flag if they want to block all future
/* sysfs */
struct device dev; /* v4l device */
struct cdev *cdev; /* character device */
+
+ /* Set either parent or v4l2_dev if your driver uses v4l2_device */
struct device *parent; /* device parent */
+ struct v4l2_device *v4l2_dev; /* v4l2_device parent */
/* device info */
char name[32];