From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- include/media/videobuf-vmalloc.h | 46 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/media/videobuf-vmalloc.h (limited to 'include/media/videobuf-vmalloc.h') diff --git a/include/media/videobuf-vmalloc.h b/include/media/videobuf-vmalloc.h new file mode 100644 index 000000000..486a97efd --- /dev/null +++ b/include/media/videobuf-vmalloc.h @@ -0,0 +1,46 @@ +/* + * helper functions for vmalloc capture buffers + * + * The functions expect the hardware being able to scatter gather + * (i.e. the buffers are not linear in physical memory, but fragmented + * into PAGE_SIZE chunks). They also assume the driver does not need + * to touch the video data. + * + * (c) 2007 Mauro Carvalho Chehab, + * + * 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 + */ +#ifndef _VIDEOBUF_VMALLOC_H +#define _VIDEOBUF_VMALLOC_H + +#include + +/* --------------------------------------------------------------------- */ + +struct videobuf_vmalloc_memory { + u32 magic; + + void *vaddr; + + /* remap_vmalloc_range seems to need to run + * after mmap() on some cases */ + struct vm_area_struct *vma; +}; + +void videobuf_queue_vmalloc_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); + +void *videobuf_to_vmalloc(struct videobuf_buffer *buf); + +void videobuf_vmalloc_free(struct videobuf_buffer *buf); + +#endif -- cgit v1.2.3-54-g00ecf