[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / media / videobuf-vmalloc.h

/*
 * 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
Commit	Line	Data
87b9ad07 MCC	1	/*
	2	* helper functions for vmalloc capture buffers
	3	*
5d6aaf50	4	* The functions expect the hardware being able to scatter gather
87b9ad07 MCC	5	* (i.e. the buffers are not linear in physical memory, but fragmented
	6	* into PAGE_SIZE chunks). They also assume the driver does not need
	7	* to touch the video data.
	8	*
	9	* (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2
	14	*/
59d34489 MCC	15	#ifndef _VIDEOBUF_VMALLOC_H
59d34489 MCC	16	#define _VIDEOBUF_VMALLOC_H
87b9ad07 MCC	17
	18	#include <media/videobuf-core.h>
	19
	20	/* --------------------------------------------------------------------- */
	21
7a02264c	22	struct videobuf_vmalloc_memory {
87b9ad07 MCC	23	u32 magic;
87b9ad07 MCC	24
bb6dbe74	25	void *vaddr;
87b9ad07	26
7a02264c PO	27	/* remap_vmalloc_range seems to need to run
7a02264c PO	28	* after mmap() on some cases */
87b9ad07 MCC	29	struct vm_area_struct *vma;
	30	};
	31
7a02264c	32	void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
38a54f35	33	const struct videobuf_queue_ops *ops,
f8b0bca1	34	struct device *dev,
87b9ad07 MCC	35	spinlock_t *irqlock,
	36	enum v4l2_buf_type type,
	37	enum v4l2_field field,
	38	unsigned int msize,
08bff03e HV	39	void *priv,
08bff03e HV	40	struct mutex *ext_lock);
87b9ad07	41
7a02264c	42	void videobuf_to_vmalloc(struct videobuf_buffer buf);
87b9ad07	43
7a02264c	44	void videobuf_vmalloc_free(struct videobuf_buffer *buf);
59d34489 MCC	45
59d34489 MCC	46	#endif