/*
 * Copyright (c) XMEDIA. All rights reserved.
 */
#include "osal.h"
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/printk.h>
#include <linux/semaphore.h>
#include <linux/slab.h>

int osal_sema_init(osal_semaphore_t *sem, int val)
{
    struct semaphore *p = NULL;
    if (sem == NULL) {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
        return -1;
    }
    p = kmalloc(sizeof(struct semaphore), GFP_KERNEL);
    if (p == NULL) {
        osal_printk("%s - kmalloc error!\n", __FUNCTION__);
        return -1;
    }
    sema_init(p, val);
    sem->sem = p;
    return 0;
}
EXPORT_SYMBOL(osal_sema_init);

int osal_down(osal_semaphore_t *sem)
{
    struct semaphore *p = NULL;
    if (sem == NULL) {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
        return -1;
    }
    p = (struct semaphore *)(sem->sem);
    down(p);
    return 0;
}
EXPORT_SYMBOL(osal_down);

int osal_down_interruptible(osal_semaphore_t *sem)
{
    struct semaphore *p = NULL;
    if (sem == NULL) {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
        return -1;
    }
    p = (struct semaphore *)(sem->sem);
    return down_interruptible(p);
}
EXPORT_SYMBOL(osal_down_interruptible);

int osal_down_trylock(osal_semaphore_t *sem)
{
    struct semaphore *p = NULL;
    if (sem == NULL) {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
        return -1;
    }
    p = (struct semaphore *)(sem->sem);
    return down_trylock(p);
}
EXPORT_SYMBOL(osal_down_trylock);

void osal_up(osal_semaphore_t *sem)
{
    struct semaphore *p = NULL;
    p = (struct semaphore *)(sem->sem);
    up(p);
}
EXPORT_SYMBOL(osal_up);

void osal_sema_destory(osal_semaphore_t *sem)
{
    if((sem != NULL) && (sem->sem != NULL)) {
        kfree((struct semaphore *)(sem->sem));
        sem->sem = NULL;
    } else {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
    }
}
EXPORT_SYMBOL(osal_sema_destory);

void osal_sema_destroy(osal_semaphore_t *sem)
{
    if((sem != NULL) && (sem->sem != NULL)) {
        kfree((struct semaphore *)(sem->sem));
        sem->sem = NULL;
    } else {
        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
    }
}
EXPORT_SYMBOL(osal_sema_destroy);