usb: gadget: uvc: Add support for DMABUF importing

Activate the videobuf2 DMABUF support. As vb2-vmalloc supports the
importer role only, exporting buffers isn't supported yet. When the
exporter role will be implemented in vb2-vmalloc the UVC gadget driver
will automatically gain support for it.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/function/uvc_queue.c b/drivers/usb/gadget/function/uvc_queue.c
index 1c29bc9..8590f9f 100644 (file)
--- a/drivers/usb/gadget/function/uvc_queue.c
+++ b/drivers/usb/gadget/function/uvc_queue.c
@@ -132,7 +132,7 @@ static int uvc_queue_init(struct uvc_video_queue *queue,
        int ret;
 
        queue->queue.type = type;
-       queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
+       queue->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
        queue->queue.drv_priv = queue;
        queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
        queue->queue.ops = &uvc_queue_qops;