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[media] uvcvideo: Register a v4l2_device 

As a first step to the media controller integration register a
v4l2_device for each UVC control interface and make the video_device a
child of the v4l2_device.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
hifive-unleashed-5.1
Laurent Pinchart 2010-01-21 05:39:47 -03:00 committed by Mauro Carvalho Chehab
parent 115d2535f8
commit 5a254d751e
2 changed files with 33 additions and 2 deletions
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29
drivers/media/video/uvc/uvc_driver.c
View File

@ -1585,6 +1585,13 @@ static void uvc_delete(struct uvc_device *dev)
uvc_status_cleanup(dev);
uvc_ctrl_cleanup_device(dev);
if (dev->vdev.dev)
v4l2_device_unregister(&dev->vdev);
#ifdef CONFIG_MEDIA_CONTROLLER
if (media_devnode_is_registered(&dev->mdev.devnode))
media_device_unregister(&dev->mdev);
#endif
list_for_each_safe(p, n, &dev->chains) {
struct uvc_video_chain *chain;
chain = list_entry(p, struct uvc_video_chain, list);
@ -1682,7 +1689,7 @@ static int uvc_register_video(struct uvc_device *dev,
* unregistered before the reference is released, so we don't need to
* get another one.
*/
vdev->parent = &dev->intf->dev;
vdev->v4l2_dev = &dev->vdev;
vdev->fops = &uvc_fops;
vdev->release = uvc_release;
strlcpy(vdev->name, dev->name, sizeof vdev->name);
@ -1814,6 +1821,24 @@ static int uvc_probe(struct usb_interface *intf,
"linux-uvc-devel mailing list.\n");
}
/* Register the media and V4L2 devices. */
#ifdef CONFIG_MEDIA_CONTROLLER
dev->mdev.dev = &intf->dev;
strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
if (udev->serial)
strlcpy(dev->mdev.serial, udev->serial,
sizeof(dev->mdev.serial));
strcpy(dev->mdev.bus_info, udev->devpath);
dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
dev->mdev.driver_version = DRIVER_VERSION_NUMBER;
if (media_device_register(&dev->mdev) < 0)
goto error;
dev->vdev.mdev = &dev->mdev;
#endif
if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
goto error;
/* Initialize controls. */
if (uvc_ctrl_init_device(dev) < 0)
goto error;
@ -1822,7 +1847,7 @@ static int uvc_probe(struct usb_interface *intf,
if (uvc_scan_device(dev) < 0)
goto error;
/* Register video devices. */
/* Register video device nodes. */
if (uvc_register_chains(dev) < 0)
goto error;

6
drivers/media/video/uvc/uvcvideo.h
View File

@ -100,6 +100,8 @@ struct uvc_xu_control {
#include <linux/poll.h>
#include <linux/usb/video.h>
#include <linux/uvcvideo.h>
#include <media/media-device.h>
#include <media/v4l2-device.h>
/* --------------------------------------------------------------------------
* UVC constants
@ -504,6 +506,10 @@ struct uvc_device {
atomic_t nmappings;
/* Video control interface */
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device mdev;
#endif
struct v4l2_device vdev;
__u16 uvc_version;
__u32 clock_frequency;