1. 根目录:
2. arch
3. arm
4. include
5. asm
6. hardware
7. iop3xx-gpio.h

/*
 * arch/arm/include/asm/hardware/iop3xx-gpio.h
 *
 * IOP3xx GPIO wrappers
 *
 * Copyright (c) 2008 Arnaud Patard <arnaud.patard@rtp-net.org>
 * Based on IXP4XX gpio.h file
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#ifndef __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
#define __ASM_ARM_HARDWARE_IOP3XX_GPIO_H

#include <mach/hardware.h>
#include <asm-generic/gpio.h>

#define __ARM_GPIOLIB_COMPLEX

#define IOP3XX_N_GPIOS	8

static inline int gpio_get_value(unsigned gpio)
{
	if (gpio > IOP3XX_N_GPIOS)
		return __gpio_get_value(gpio);

	return gpio_line_get(gpio);
}

static inline void gpio_set_value(unsigned gpio, int value)
{
	if (gpio > IOP3XX_N_GPIOS) {
		__gpio_set_value(gpio, value);
		return;
	}
	gpio_line_set(gpio, value);
}

static inline int gpio_cansleep(unsigned gpio)
{
	if (gpio < IOP3XX_N_GPIOS)
		return 0;
	else
		return __gpio_cansleep(gpio);
}

/*
 * The GPIOs are not generating any interrupt
 * Note : manuals are not clear about this
 */
static inline int gpio_to_irq(int gpio)
{
	return -EINVAL;
}

static inline int irq_to_gpio(int gpio)
{
	return -EINVAL;
}

#endif