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77512baaea
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 8 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204654.096873163@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
31 lines
909 B
C
31 lines
909 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* helper functions for physically contiguous capture buffers
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*
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* The functions support hardware lacking scatter gather support
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* (i.e. the buffers must be linear in physical memory)
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*
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* Copyright (c) 2008 Magnus Damm
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*/
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#ifndef _VIDEOBUF_DMA_CONTIG_H
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#define _VIDEOBUF_DMA_CONTIG_H
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#include <linux/dma-mapping.h>
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#include <media/videobuf-core.h>
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void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
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const struct videobuf_queue_ops *ops,
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struct device *dev,
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spinlock_t *irqlock,
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enum v4l2_buf_type type,
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enum v4l2_field field,
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unsigned int msize,
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void *priv,
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struct mutex *ext_lock);
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dma_addr_t videobuf_to_dma_contig(struct videobuf_buffer *buf);
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void videobuf_dma_contig_free(struct videobuf_queue *q,
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struct videobuf_buffer *buf);
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#endif /* _VIDEOBUF_DMA_CONTIG_H */
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