174 static void sur40_process_video(struct sur40_state *sur40);
239 	struct sur40_state *sur40 = polldev->private;  in sur40_open()  local
241 	dev_dbg(sur40->dev, "open\n");  in sur40_open()
242 	sur40_init(sur40);  in sur40_open()
248 	struct sur40_state *sur40 = polldev->private;  in sur40_close()  local
250 	dev_dbg(sur40->dev, "close\n");  in sur40_close()
298 	struct sur40_state *sur40 = polldev->private;  in sur40_poll()  local
303 	struct sur40_header *header = &sur40->bulk_in_buffer->header;  in sur40_poll()
304 	struct sur40_blob *inblob = &sur40->bulk_in_buffer->blobs[0];  in sur40_poll()
306 	dev_dbg(sur40->dev, "poll\n");  in sur40_poll()
313 		result = usb_bulk_msg(sur40->usbdev,  in sur40_poll()
314 			usb_rcvbulkpipe(sur40->usbdev, sur40->bulk_in_epaddr),  in sur40_poll()
315 			sur40->bulk_in_buffer, sur40->bulk_in_size,  in sur40_poll()
318 		dev_dbg(sur40->dev, "received %d bytes\n", bulk_read);  in sur40_poll()
321 			dev_err(sur40->dev, "error in usb_bulk_read\n");  in sur40_poll()
328 			dev_err(sur40->dev, "transfer size mismatch\n");  in sur40_poll()
335 			dev_dbg(sur40->dev, "need %d blobs\n", need_blobs);  in sur40_poll()
345 			dev_warn(sur40->dev, "packet ID mismatch\n");  in sur40_poll()
348 		dev_dbg(sur40->dev, "received %d blobs\n", packet_blobs);  in sur40_poll()
356 			dev_dbg(sur40->dev, "processing blob\n");  in sur40_poll()
365 	sur40_process_video(sur40);  in sur40_poll()
369 static void sur40_process_video(struct sur40_state *sur40)  in sur40_process_video()  argument
372 	struct sur40_image_header *img = (void *)(sur40->bulk_in_buffer);  in sur40_process_video()
378 	if (!vb2_start_streaming_called(&sur40->queue))  in sur40_process_video()
382 	spin_lock(&sur40->qlock);  in sur40_process_video()
383 	if (list_empty(&sur40->buf_list)) {  in sur40_process_video()
384 		dev_dbg(sur40->dev, "buffer queue empty\n");  in sur40_process_video()
385 		spin_unlock(&sur40->qlock);  in sur40_process_video()
388 	new_buf = list_entry(sur40->buf_list.next, struct sur40_buffer, list);  in sur40_process_video()
390 	spin_unlock(&sur40->qlock);  in sur40_process_video()
393 	result = usb_bulk_msg(sur40->usbdev,  in sur40_process_video()
394 			usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT),  in sur40_process_video()
395 			sur40->bulk_in_buffer, sur40->bulk_in_size,  in sur40_process_video()
399 		dev_err(sur40->dev, "error in usb_bulk_read\n");  in sur40_process_video()
404 		dev_err(sur40->dev, "received %d bytes (%zd expected)\n",  in sur40_process_video()
410 		dev_err(sur40->dev, "image magic mismatch\n");  in sur40_process_video()
415 		dev_err(sur40->dev, "image size mismatch\n");  in sur40_process_video()
421 	result = usb_sg_init(&sgr, sur40->usbdev,  in sur40_process_video()
422 		usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), 0,  in sur40_process_video()
425 		dev_err(sur40->dev, "error %d in usb_sg_init\n", result);  in sur40_process_video()
431 		dev_err(sur40->dev, "error %d in usb_sg_wait\n", sgr.status);  in sur40_process_video()
437 	new_buf->vb.v4l2_buf.sequence = sur40->sequence++;  in sur40_process_video()
480 	struct sur40_state *sur40;  in sur40_probe()  local
497 	sur40 = kzalloc(sizeof(struct sur40_state), GFP_KERNEL);  in sur40_probe()
498 	if (!sur40)  in sur40_probe()
508 	INIT_LIST_HEAD(&sur40->buf_list);  in sur40_probe()
509 	spin_lock_init(&sur40->qlock);  in sur40_probe()
510 	mutex_init(&sur40->lock);  in sur40_probe()
513 	poll_dev->private = sur40;  in sur40_probe()
524 	usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys));  in sur40_probe()
525 	strlcat(sur40->phys, "/input0", sizeof(sur40->phys));  in sur40_probe()
526 	poll_dev->input->phys = sur40->phys;  in sur40_probe()
529 	sur40->usbdev = usbdev;  in sur40_probe()
530 	sur40->dev = &interface->dev;  in sur40_probe()
531 	sur40->input = poll_dev;  in sur40_probe()
534 	sur40->bulk_in_size = usb_endpoint_maxp(endpoint);  in sur40_probe()
535 	sur40->bulk_in_epaddr = endpoint->bEndpointAddress;  in sur40_probe()
536 	sur40->bulk_in_buffer = kmalloc(sur40->bulk_in_size, GFP_KERNEL);  in sur40_probe()
537 	if (!sur40->bulk_in_buffer) {  in sur40_probe()
552 	snprintf(sur40->v4l2.name, sizeof(sur40->v4l2.name), "%s", DRIVER_LONG);  in sur40_probe()
553 	error = v4l2_device_register(sur40->dev, &sur40->v4l2);  in sur40_probe()
561 	sur40->queue = sur40_queue;  in sur40_probe()
562 	sur40->queue.drv_priv = sur40;  in sur40_probe()
563 	sur40->queue.lock = &sur40->lock;  in sur40_probe()
566 	error = vb2_queue_init(&sur40->queue);  in sur40_probe()
570 	sur40->alloc_ctx = vb2_dma_sg_init_ctx(sur40->dev);  in sur40_probe()
571 	if (IS_ERR(sur40->alloc_ctx)) {  in sur40_probe()
572 		dev_err(sur40->dev, "Can't allocate buffer context");  in sur40_probe()
576 	sur40->vdev = sur40_video_device;  in sur40_probe()
577 	sur40->vdev.v4l2_dev = &sur40->v4l2;  in sur40_probe()
578 	sur40->vdev.lock = &sur40->lock;  in sur40_probe()
579 	sur40->vdev.queue = &sur40->queue;  in sur40_probe()
580 	video_set_drvdata(&sur40->vdev, sur40);  in sur40_probe()
582 	error = video_register_device(&sur40->vdev, VFL_TYPE_GRABBER, -1);  in sur40_probe()
590 	usb_set_intfdata(interface, sur40);  in sur40_probe()
596 	video_unregister_device(&sur40->vdev);  in sur40_probe()
598 	v4l2_device_unregister(&sur40->v4l2);  in sur40_probe()
600 	kfree(sur40->bulk_in_buffer);  in sur40_probe()
602 	input_free_polled_device(sur40->input);  in sur40_probe()
604 	kfree(sur40);  in sur40_probe()
612 	struct sur40_state *sur40 = usb_get_intfdata(interface);  in sur40_disconnect()  local
614 	video_unregister_device(&sur40->vdev);  in sur40_disconnect()
615 	v4l2_device_unregister(&sur40->v4l2);  in sur40_disconnect()
616 	vb2_dma_sg_cleanup_ctx(sur40->alloc_ctx);  in sur40_disconnect()
618 	input_unregister_polled_device(sur40->input);  in sur40_disconnect()
619 	input_free_polled_device(sur40->input);  in sur40_disconnect()
620 	kfree(sur40->bulk_in_buffer);  in sur40_disconnect()
621 	kfree(sur40);  in sur40_disconnect()
638 	struct sur40_state *sur40 = vb2_get_drv_priv(q);  in sur40_queue_setup()  local
648 	alloc_ctxs[0] = sur40->alloc_ctx;  in sur40_queue_setup()
659 	struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue);  in sur40_buffer_prepare()  local
663 		dev_err(&sur40->usbdev->dev, "buffer too small (%lu < %lu)\n",  in sur40_buffer_prepare()
677 	struct sur40_state *sur40 = vb2_get_drv_priv(vb->vb2_queue);  in sur40_buffer_queue()  local
680 	spin_lock(&sur40->qlock);  in sur40_buffer_queue()
681 	list_add_tail(&buf->list, &sur40->buf_list);  in sur40_buffer_queue()
682 	spin_unlock(&sur40->qlock);  in sur40_buffer_queue()
685 static void return_all_buffers(struct sur40_state *sur40,  in return_all_buffers()  argument
690 	spin_lock(&sur40->qlock);  in return_all_buffers()
691 	list_for_each_entry_safe(buf, node, &sur40->buf_list, list) {  in return_all_buffers()
695 	spin_unlock(&sur40->qlock);  in return_all_buffers()
706 	struct sur40_state *sur40 = vb2_get_drv_priv(vq);  in sur40_start_streaming()  local
708 	sur40->sequence = 0;  in sur40_start_streaming()
718 	struct sur40_state *sur40 = vb2_get_drv_priv(vq);  in sur40_stop_streaming()  local
721 	return_all_buffers(sur40, VB2_BUF_STATE_ERROR);  in sur40_stop_streaming()
728 	struct sur40_state *sur40 = video_drvdata(file);  in sur40_vidioc_querycap()  local
732 	usb_make_path(sur40->usbdev, cap->bus_info, sizeof(cap->bus_info));  in sur40_vidioc_querycap()