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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2015-04-14 04:19:51 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-05-30 12:11:40 -0300 |
| commit | 7195f61b801104add6453e1d8a39d5c8366fc446 (patch) | |
| tree | 2ff6a537e4710fc76d164dbb5765da328e8f5057 /drivers/media/usb/uvc/uvc_v4l2.c | |
| parent | baf06b519051047b4ca6bcaa94ee2d85672dd443 (diff) | |
| download | op-kernel-dev-7195f61b801104add6453e1d8a39d5c8366fc446.zip op-kernel-dev-7195f61b801104add6453e1d8a39d5c8366fc446.tar.gz | |
[media] uvcvideo: Implement DMABUF exporter role
Now that videobuf2-vmalloc supports exporting buffers, add support for
the DMABUF exporter role by plugging in the videobuf2 ioctl helper.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/usb/uvc/uvc_v4l2.c')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index c4b1ac6..69d0180 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -723,6 +723,18 @@ static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) return uvc_queue_buffer(&stream->queue, buf); } +static int uvc_ioctl_expbuf(struct file *file, void *fh, + struct v4l2_exportbuffer *exp) +{ + struct uvc_fh *handle = fh; + struct uvc_streaming *stream = handle->stream; + + if (!uvc_has_privileges(handle)) + return -EBUSY; + + return uvc_export_buffer(&stream->queue, exp); +} + static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { struct uvc_fh *handle = fh; @@ -1478,6 +1490,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = { .vidioc_reqbufs = uvc_ioctl_reqbufs, .vidioc_querybuf = uvc_ioctl_querybuf, .vidioc_qbuf = uvc_ioctl_qbuf, + .vidioc_expbuf = uvc_ioctl_expbuf, .vidioc_dqbuf = uvc_ioctl_dqbuf, .vidioc_create_bufs = uvc_ioctl_create_bufs, .vidioc_streamon = uvc_ioctl_streamon, |
