/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support
 * ----------------------------------------------------------------------------
 * Copyright (c) 2006, Atmel Corporation

 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef __GPIO_H__
#define __GPIO_H__

/* I/O type */
enum pio_type {
	PIO_PERIPH_A,
	PIO_PERIPH_B,
	PIO_INPUT,
	PIO_OUTPUT
};

/* I/O attributes */
#define PIO_DEFAULT	(0 << 0)
#define PIO_PULLUP	(1 << 0)
#define PIO_DEGLITCH	(1 << 1)
#define PIO_OPENDRAIN	(1 << 2)

struct pio_desc {
	const char	*pin_name;	/* Pin Name */
	unsigned int	pin_num;	/* Pin number */
	unsigned int	default_value;	/* Default value for outputs */
	unsigned char	attribute;
	enum pio_type	type;
};

extern int pio_set_value(unsigned pin, int value);
extern int pio_get_value(unsigned pin);

/* pio_device_pio_setup: Configure PIO in periph mode according to the platform informations */
extern int pio_configure(const struct pio_desc *pio_desc);

extern int pio_set_gpio_input(unsigned pin, int use_pullup);
extern int pio_set_gpio_output(unsigned pin, int value);

#endif /* #ifndef __GPIO_H__ */
