blob: 525883b2c53e190fb80450f8af74531f82b37249 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
* helper functions for physically contiguous capture buffers
* The functions support hardware lacking scatter gather support
* (i.e. the buffers must be linear in physical memory)
* Copyright (c) 2008 Magnus Damm
#include <linux/dma-mapping.h>
#include <media/videobuf-core.h>
void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
const struct videobuf_queue_ops *ops,
struct device *dev,
spinlock_t *irqlock,
enum v4l2_buf_type type,
enum v4l2_field field,
unsigned int msize,
void *priv,
struct mutex *ext_lock);
dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf);
void videobuf_dma_contig_free(struct videobuf_queue *q,
struct videobuf_buffer *buf);