include/media/videobuf2-msm-mem.h

/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * helper functions for physically contiguous PMEM capture buffers
 */

#ifndef _VIDEOBUF2_PMEM_CONTIG_H
#define _VIDEOBUF2_PMEM_CONTIG_H

#include <media/videobuf2-core.h>
#include <linux/msm_iommu_domains.h>
#include <linux/msm_ion.h>

struct videobuf2_mapping {
	unsigned int count;
};

enum videobuf2_buffer_type {
	VIDEOBUF2_SINGLE_PLANE,
	VIDEOBUF2_MULTIPLE_PLANES
};

struct videobuf2_sp_offset {
	uint32_t y_off;
	uint32_t cbcr_off;
};

struct videobuf2_msm_offset {
	union {
		struct videobuf2_sp_offset sp_off;
		uint32_t data_offset;
	};
};

struct videobuf2_contig_pmem {
	u32 magic;
	void *vaddr;
	dma_addr_t phyaddr;
	unsigned long size;
	int is_userptr;
	/* Offset of the plane inside the buffer */
	struct videobuf2_msm_offset offset;
	enum videobuf2_buffer_type buffer_type;
	int path;
	struct file *file;
	/* Offset of the buffer */
	uint32_t addr_offset;
	int dirty;
	unsigned int count;
	void *alloc_ctx;
	unsigned long mapped_phyaddr;
	struct ion_handle *ion_handle;
	struct ion_client *client;
};
void videobuf2_queue_pmem_contig_init(struct vb2_queue *q,
					enum v4l2_buf_type type,
					const struct vb2_ops *ops,
					unsigned int size,
					void *priv);
int videobuf2_pmem_contig_mmap_get(struct videobuf2_contig_pmem *mem,
					struct videobuf2_msm_offset *offset,
					enum videobuf2_buffer_type, int path);
int videobuf2_pmem_contig_user_get(struct videobuf2_contig_pmem *mem,
					struct videobuf2_msm_offset *offset,
					enum videobuf2_buffer_type,
					uint32_t addr_offset, int path,
					struct ion_client *client,
					int domain_num);
void videobuf2_pmem_contig_user_put(struct videobuf2_contig_pmem *mem,
				struct ion_client *client, int domain_num);
unsigned long videobuf2_to_pmem_contig(struct vb2_buffer *buf,
					unsigned int plane_no);

#endif /* _VIDEOBUF2_PMEM_CONTIG_H */