/*
 *  Include file for NEC VR4100 series General-purpose I/O Unit.
 *
 *  Copyright (C) 2005  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
 *
 *  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 __NEC_VR41XX_GIU_H
#define __NEC_VR41XX_GIU_H

typedef enum {
	IRQ_TRIGGER_LEVEL,
	IRQ_TRIGGER_EDGE,
	IRQ_TRIGGER_EDGE_FALLING,
	IRQ_TRIGGER_EDGE_RISING,
} irq_trigger_t;

typedef enum {
	IRQ_SIGNAL_THROUGH,
	IRQ_SIGNAL_HOLD,
} irq_signal_t;

extern void vr41xx_set_irq_trigger(unsigned int pin, irq_trigger_t trigger, irq_signal_t signal);

typedef enum {
	IRQ_LEVEL_LOW,
	IRQ_LEVEL_HIGH,
} irq_level_t;

extern void vr41xx_set_irq_level(unsigned int pin, irq_level_t level);

typedef enum {
	GPIO_DATA_LOW,
	GPIO_DATA_HIGH,
	GPIO_DATA_INVAL,
} gpio_data_t;

extern gpio_data_t vr41xx_gpio_get_pin(unsigned int pin);
extern int vr41xx_gpio_set_pin(unsigned int pin, gpio_data_t data);

typedef enum {
	GPIO_INPUT,
	GPIO_OUTPUT,
	GPIO_OUTPUT_DISABLE,
} gpio_direction_t;

extern int vr41xx_gpio_set_direction(unsigned int pin, gpio_direction_t dir);

typedef enum {
	GPIO_PULL_DOWN,
	GPIO_PULL_UP,
	GPIO_PULL_DISABLE,
} gpio_pull_t;

extern int vr41xx_gpio_pullupdown(unsigned int pin, gpio_pull_t pull);

#endif /* __NEC_VR41XX_GIU_H */