/* linux/drivers/media/video/samsung/jpeg_v2/jpg_mem.c
 *
 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
 * http://www.samsung.com/
 *
 * Operation for Jpeg encoder/docoder with memory
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#include <linux/io.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/types.h>

#include "jpg_mem.h"
#include "jpg_misc.h"
#include "jpg_opr.h"

/*
 * Function: phy_to_vir_addr
 * Parameters: phy_addr, mem_size
 * Return Value: vir_addr
 * Implementation Notes: memory mapping from physical addr to virtual addr
 */
void *phy_to_vir_addr(unsigned int phy_addr, int mem_size)
{
	void	*reserved_mem;

	reserved_mem = (void *)ioremap((unsigned long)phy_addr, (int)mem_size);

	if (reserved_mem == NULL) {
		jpg_err("phyical to virtual memory mapping was failed!\r\n");
		return NULL;
	}

	return reserved_mem;
}

void *mem_move(void *dst, const void *src, unsigned int size)
{
	return memmove(dst, src, size);
}

void *mem_alloc(unsigned int size)
{
	void	*alloc_mem;

	alloc_mem = kmalloc((int)size, GFP_KERNEL);

	if (alloc_mem == NULL) {
		jpg_err("memory allocation failed!\r\n");
		return NULL;
	}

	return alloc_mem;
}