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/* 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 */