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media: usb/gadget/f_uvc: set device_caps in struct video_device

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Instead of filling in the struct v4l2_capability device_caps
field, fill in the struct video_device device_caps field.

That way the V4L2 core knows what the capabilities of the
video device are.

But this only really works if all drivers use this, so convert
this UVC gadget driver.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2019-06-04 07:19:55 -04:00 committed by Mauro Carvalho Chehab
parent 372332b111
commit 1397e3ec0c
2 changed files with 1 additions and 4 deletions
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1
drivers/usb/gadget/function/f_uvc.c
View file

@ -423,6 +423,7 @@ uvc_register_video(struct uvc_device *uvc)
uvc->vdev.release = video_device_release_empty;
uvc->vdev.vfl_dir = VFL_DIR_TX;
uvc->vdev.lock = &uvc->video.mutex;
uvc->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
strlcpy(uvc->vdev.name, cdev->gadget->name, sizeof(uvc->vdev.name));
video_set_drvdata(&uvc->vdev, uvc);

4
drivers/usb/gadget/function/uvc_v4l2.c
View file

@ -71,10 +71,6 @@ uvc_v4l2_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
strlcpy(cap->card, cdev->gadget->name, sizeof(cap->card));
strlcpy(cap->bus_info, dev_name(&cdev->gadget->dev),
sizeof(cap->bus_info));
cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}