45 static void uvc_queue_return_buffers(struct uvc_video_queue *queue,  in uvc_queue_return_buffers()  argument
52 	while (!list_empty(&queue->irqqueue)) {  in uvc_queue_return_buffers()
53 		struct uvc_buffer *buf = list_first_entry(&queue->irqqueue,  in uvc_queue_return_buffers()
55 							  queue);  in uvc_queue_return_buffers()
56 		list_del(&buf->queue);  in uvc_queue_return_buffers()
70 	struct uvc_video_queue *queue = vb2_get_drv_priv(vq);  in uvc_queue_setup()  local
80 		stream = uvc_queue_to_stream(queue);  in uvc_queue_setup()
101 	struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);  in uvc_buffer_prepare()  local
106 		uvc_dbg(uvc_queue_to_stream(queue)->dev, CAPTURE,  in uvc_buffer_prepare()
111 	if (unlikely(queue->flags & UVC_QUEUE_DISCONNECTED))  in uvc_buffer_prepare()
129 	struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);  in uvc_buffer_queue()  local
133 	spin_lock_irqsave(&queue->irqlock, flags);  in uvc_buffer_queue()
134 	if (likely(!(queue->flags & UVC_QUEUE_DISCONNECTED))) {  in uvc_buffer_queue()
136 		list_add_tail(&buf->queue, &queue->irqqueue);  in uvc_buffer_queue()
146 	spin_unlock_irqrestore(&queue->irqlock, flags);  in uvc_buffer_queue()
152 	struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);  in uvc_buffer_finish()  local
153 	struct uvc_streaming *stream = uvc_queue_to_stream(queue);  in uvc_buffer_finish()
162 	struct uvc_video_queue *queue = vb2_get_drv_priv(vq);  in uvc_start_streaming()  local
163 	struct uvc_streaming *stream = uvc_queue_to_stream(queue);  in uvc_start_streaming()
168 	queue->buf_used = 0;  in uvc_start_streaming()
174 	spin_lock_irq(&queue->irqlock);  in uvc_start_streaming()
175 	uvc_queue_return_buffers(queue, UVC_BUF_STATE_QUEUED);  in uvc_start_streaming()
176 	spin_unlock_irq(&queue->irqlock);  in uvc_start_streaming()
183 	struct uvc_video_queue *queue = vb2_get_drv_priv(vq);  in uvc_stop_streaming()  local
188 		uvc_video_stop_streaming(uvc_queue_to_stream(queue));  in uvc_stop_streaming()
190 	spin_lock_irq(&queue->irqlock);  in uvc_stop_streaming()
191 	uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);  in uvc_stop_streaming()
192 	spin_unlock_irq(&queue->irqlock);  in uvc_stop_streaming()
215 int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,  in uvc_queue_init()  argument
220 	queue->queue.type = type;  in uvc_queue_init()
221 	queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;  in uvc_queue_init()
222 	queue->queue.drv_priv = queue;  in uvc_queue_init()
223 	queue->queue.buf_struct_size = sizeof(struct uvc_buffer);  in uvc_queue_init()
224 	queue->queue.mem_ops = &vb2_vmalloc_memops;  in uvc_queue_init()
225 	queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC  in uvc_queue_init()
227 	queue->queue.lock = &queue->mutex;  in uvc_queue_init()
231 		queue->queue.ops = &uvc_meta_queue_qops;  in uvc_queue_init()
234 		queue->queue.io_modes |= VB2_DMABUF;  in uvc_queue_init()
235 		queue->queue.ops = &uvc_queue_qops;  in uvc_queue_init()
239 	ret = vb2_queue_init(&queue->queue);  in uvc_queue_init()
243 	mutex_init(&queue->mutex);  in uvc_queue_init()
244 	spin_lock_init(&queue->irqlock);  in uvc_queue_init()
245 	INIT_LIST_HEAD(&queue->irqqueue);  in uvc_queue_init()
246 	queue->flags = drop_corrupted ? UVC_QUEUE_DROP_CORRUPTED : 0;  in uvc_queue_init()
251 void uvc_queue_release(struct uvc_video_queue *queue)  in uvc_queue_release()  argument
253 	mutex_lock(&queue->mutex);  in uvc_queue_release()
254 	vb2_queue_release(&queue->queue);  in uvc_queue_release()
255 	mutex_unlock(&queue->mutex);  in uvc_queue_release()
262 int uvc_request_buffers(struct uvc_video_queue *queue,  in uvc_request_buffers()  argument
267 	mutex_lock(&queue->mutex);  in uvc_request_buffers()
268 	ret = vb2_reqbufs(&queue->queue, rb);  in uvc_request_buffers()
269 	mutex_unlock(&queue->mutex);  in uvc_request_buffers()
274 int uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)  in uvc_query_buffer()  argument
278 	mutex_lock(&queue->mutex);  in uvc_query_buffer()
279 	ret = vb2_querybuf(&queue->queue, buf);  in uvc_query_buffer()
280 	mutex_unlock(&queue->mutex);  in uvc_query_buffer()
285 int uvc_create_buffers(struct uvc_video_queue *queue,  in uvc_create_buffers()  argument
290 	mutex_lock(&queue->mutex);  in uvc_create_buffers()
291 	ret = vb2_create_bufs(&queue->queue, cb);  in uvc_create_buffers()
292 	mutex_unlock(&queue->mutex);  in uvc_create_buffers()
297 int uvc_queue_buffer(struct uvc_video_queue *queue,  in uvc_queue_buffer()  argument
302 	mutex_lock(&queue->mutex);  in uvc_queue_buffer()
303 	ret = vb2_qbuf(&queue->queue, mdev, buf);  in uvc_queue_buffer()
304 	mutex_unlock(&queue->mutex);  in uvc_queue_buffer()
309 int uvc_export_buffer(struct uvc_video_queue *queue,  in uvc_export_buffer()  argument
314 	mutex_lock(&queue->mutex);  in uvc_export_buffer()
315 	ret = vb2_expbuf(&queue->queue, exp);  in uvc_export_buffer()
316 	mutex_unlock(&queue->mutex);  in uvc_export_buffer()
321 int uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf,  in uvc_dequeue_buffer()  argument
326 	mutex_lock(&queue->mutex);  in uvc_dequeue_buffer()
327 	ret = vb2_dqbuf(&queue->queue, buf, nonblocking);  in uvc_dequeue_buffer()
328 	mutex_unlock(&queue->mutex);  in uvc_dequeue_buffer()
333 int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type)  in uvc_queue_streamon()  argument
337 	mutex_lock(&queue->mutex);  in uvc_queue_streamon()
338 	ret = vb2_streamon(&queue->queue, type);  in uvc_queue_streamon()
339 	mutex_unlock(&queue->mutex);  in uvc_queue_streamon()
344 int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type)  in uvc_queue_streamoff()  argument
348 	mutex_lock(&queue->mutex);  in uvc_queue_streamoff()
349 	ret = vb2_streamoff(&queue->queue, type);  in uvc_queue_streamoff()
350 	mutex_unlock(&queue->mutex);  in uvc_queue_streamoff()
355 int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)  in uvc_queue_mmap()  argument
357 	return vb2_mmap(&queue->queue, vma);  in uvc_queue_mmap()
361 unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,  in uvc_queue_get_unmapped_area()  argument
364 	return vb2_get_unmapped_area(&queue->queue, 0, 0, pgoff, 0);  in uvc_queue_get_unmapped_area()
368 __poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,  in uvc_queue_poll()  argument
373 	mutex_lock(&queue->mutex);  in uvc_queue_poll()
374 	ret = vb2_poll(&queue->queue, file, wait);  in uvc_queue_poll()
375 	mutex_unlock(&queue->mutex);  in uvc_queue_poll()
387 int uvc_queue_allocated(struct uvc_video_queue *queue)  in uvc_queue_allocated()  argument
391 	mutex_lock(&queue->mutex);  in uvc_queue_allocated()
392 	allocated = vb2_is_busy(&queue->queue);  in uvc_queue_allocated()
393 	mutex_unlock(&queue->mutex);  in uvc_queue_allocated()
410 void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)  in uvc_queue_cancel()  argument
414 	spin_lock_irqsave(&queue->irqlock, flags);  in uvc_queue_cancel()
415 	uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);  in uvc_queue_cancel()
424 		queue->flags |= UVC_QUEUE_DISCONNECTED;  in uvc_queue_cancel()
425 	spin_unlock_irqrestore(&queue->irqlock, flags);  in uvc_queue_cancel()
435 __uvc_queue_get_current_buffer(struct uvc_video_queue *queue)  in __uvc_queue_get_current_buffer()  argument
437 	if (list_empty(&queue->irqqueue))  in __uvc_queue_get_current_buffer()
440 	return list_first_entry(&queue->irqqueue, struct uvc_buffer, queue);  in __uvc_queue_get_current_buffer()
443 struct uvc_buffer *uvc_queue_get_current_buffer(struct uvc_video_queue *queue)  in uvc_queue_get_current_buffer()  argument
448 	spin_lock_irqsave(&queue->irqlock, flags);  in uvc_queue_get_current_buffer()
449 	nextbuf = __uvc_queue_get_current_buffer(queue);  in uvc_queue_get_current_buffer()
450 	spin_unlock_irqrestore(&queue->irqlock, flags);  in uvc_queue_get_current_buffer()
462 static void uvc_queue_buffer_requeue(struct uvc_video_queue *queue,  in uvc_queue_buffer_requeue()  argument
477 	struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);  in uvc_queue_buffer_complete()  local
479 	if ((queue->flags & UVC_QUEUE_DROP_CORRUPTED) && buf->error) {  in uvc_queue_buffer_complete()
480 		uvc_queue_buffer_requeue(queue, buf);  in uvc_queue_buffer_complete()
503 struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,  in uvc_queue_next_buffer()  argument
509 	spin_lock_irqsave(&queue->irqlock, flags);  in uvc_queue_next_buffer()
510 	list_del(&buf->queue);  in uvc_queue_next_buffer()
511 	nextbuf = __uvc_queue_get_current_buffer(queue);  in uvc_queue_next_buffer()
512 	spin_unlock_irqrestore(&queue->irqlock, flags);  in uvc_queue_next_buffer()