31 lines
909 B
C
31 lines
909 B
C
/* 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
|
|
*/
|
|
#ifndef _VIDEOBUF_DMA_CONTIG_H
|
|
#define _VIDEOBUF_DMA_CONTIG_H
|
|
|
|
#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);
|
|
|
|
#endif /* _VIDEOBUF_DMA_CONTIG_H */
|