[linux-block.git] / include / media / videobuf-dma-contig.h

/* 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 */
Commit	Line	Data
77512baa	1	/* SPDX-License-Identifier: GPL-2.0-only */
2cc45cf2 MD	2	/*
	3	* helper functions for physically contiguous capture buffers
	4	*
	5	* The functions support hardware lacking scatter gather support
	6	* (i.e. the buffers must be linear in physical memory)
	7	*
	8	* Copyright (c) 2008 Magnus Damm
2cc45cf2 MD	9	*/
	10	#ifndef _VIDEOBUF_DMA_CONTIG_H
	11	#define _VIDEOBUF_DMA_CONTIG_H
	12
	13	#include <linux/dma-mapping.h>
	14	#include <media/videobuf-core.h>
	15
	16	void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
38a54f35	17	const struct videobuf_queue_ops *ops,
2cc45cf2 MD	18	struct device *dev,
	19	spinlock_t *irqlock,
	20	enum v4l2_buf_type type,
	21	enum v4l2_field field,
	22	unsigned int msize,
08bff03e HV	23	void *priv,
08bff03e HV	24	struct mutex *ext_lock);
2cc45cf2 MD	25
	26	dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf);
	27	void videobuf_dma_contig_free(struct videobuf_queue *q,
	28	struct videobuf_buffer *buf);
	29
	30	#endif /* _VIDEOBUF_DMA_CONTIG_H */