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/* linux/drivers/media/video/samsung/jpeg_v2/jpg_misc.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Operation for Jpeg encoder/docoder with mutex
*
* 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 <stdarg.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include "jpg_misc.h"
#include "jpg_mem.h"
static struct mutex *h_mutex;
/*
* Function: create_jpg_mutex
* Implementation Notes: Create Mutex handle
*/
struct mutex *create_jpg_mutex(void)
{
h_mutex = kmalloc(sizeof(struct mutex), GFP_KERNEL);
if (h_mutex == NULL)
return NULL;
mutex_init(h_mutex);
return h_mutex;
}
/*
* Function: lock_jpg_mutex
* Implementation Notes: lock mutex
*/
unsigned long lock_jpg_mutex(void)
{
mutex_lock(h_mutex);
return 1;
}
/*
* Function: unlock_jpg_mutex
* Implementation Notes: unlock mutex
*/
unsigned long unlock_jpg_mutex(void)
{
mutex_unlock(h_mutex);
return 1;
}
/*
* Function: delete_jpg_mutex
* Implementation Notes: delete mutex handle
*/
void delete_jpg_mutex(void)
{
if (h_mutex == NULL)
return;
mutex_destroy(h_mutex);
}
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