/*
 * $Id$
 * 
 * Copyright (C) 2007 OpenWrt.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 of the License, or
 * (at your option) any later version.
 * 
 * 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.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/init.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <asm/addrspace.h>
#include <asm/io.h>
#include <asm/ar7/ar7.h>
#include <asm/ar7/gpio.h>

static char *ar7_gpio_list[AR7_GPIO_MAX] = { 0, };

int gpio_request(unsigned gpio, char *label)
{
	if (gpio >= AR7_GPIO_MAX)
		return -EINVAL;

	if (ar7_gpio_list[gpio])
		return -EBUSY;

	if (label) {
		ar7_gpio_list[gpio] = label;
	} else {
		ar7_gpio_list[gpio] = "busy";
	}

	return 0;
}
EXPORT_SYMBOL(gpio_request);

void gpio_free(unsigned gpio)
{
	BUG_ON(!ar7_gpio_list[gpio]);
	ar7_gpio_list[gpio] = NULL;
}
EXPORT_SYMBOL(gpio_free);