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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>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* helper functions for vmalloc capture buffers
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*
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* The functions expect the hardware being able to scatter gather
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* (i.e. the buffers are not linear in physical memory, but fragmented
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* into PAGE_SIZE chunks). They also assume the driver does not need
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* to touch the video data.
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*
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* (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
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*/
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#ifndef _VIDEOBUF_VMALLOC_H
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#define _VIDEOBUF_VMALLOC_H
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#include <media/videobuf-core.h>
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/* --------------------------------------------------------------------- */
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struct videobuf_vmalloc_memory {
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u32 magic;
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void *vaddr;
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/* remap_vmalloc_range seems to need to run
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* after mmap() on some cases */
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struct vm_area_struct *vma;
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};
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void videobuf_queue_vmalloc_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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void *videobuf_to_vmalloc(struct videobuf_buffer *buf);
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void videobuf_vmalloc_free(struct videobuf_buffer *buf);
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#endif
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