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author | root <root@artemis.panaceas.org> | 2015-12-25 15:00:15 +0000 |
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committer | root <root@artemis.panaceas.org> | 2015-12-25 15:00:15 +0000 |
commit | ddd86436f4e3643c04b797f858dab95d5f2e4de9 (patch) | |
tree | bfe7a780cf9a2f4fc33aec32c82e625e79dece1f /include/media/videobuf-vmalloc.h | |
download | backports-3.10.19-1-master.tar.gz backports-3.10.19-1-master.tar.bz2 backports-3.10.19-1-master.zip |
Diffstat (limited to 'include/media/videobuf-vmalloc.h')
-rw-r--r-- | include/media/videobuf-vmalloc.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/media/videobuf-vmalloc.h b/include/media/videobuf-vmalloc.h new file mode 100644 index 0000000..486a97e --- /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, <mchehab@infradead.org> + * + * 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 <media/videobuf-core.h> + +/* --------------------------------------------------------------------- */ + +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 |