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#ifndef __GPIO_H__

#define __GPIO_H__

#define MIN_GPIO_BIT            0

#define MAX_GPIO_BIT            31

#define TOTAL_GPIO_BITS         ((MAX_GPIO_BIT-MIN_GPIO_BIT+1))

#define IN_REG_OFFSET           0x00

#define OUT_REG_OFFSET          0x04

#define OE_REG_OFFSET           0x08

#define INTE_REG_OFFSET         0x0C

#define PTRIG_REG_OFFSET        0x10

#define AUX_REG_OFFSET          0x14

#define CTRL_REG_OFFSET         0x18

#define INTS_REG_OFFSET         0x1C

#define ECLK_REG_OFFSET         0x20

#define NEC_REG_OFFSET          0x24

typedef struct vector_t_

{

        void (*vec)();

} vector_t;

typedef struct gpio_t_

{

        volatile unsigned char *base_addr;

        unsigned int instance_num;

        unsigned int io_config;

        vector_t vectors[TOTAL_GPIO_BITS];

} gpio_t;

typedef enum iotype_t_

{

        IO_OUTPUT = 0,

        IO_INPUT = 1

} iotype_t;

typedef enum edge_t_

{

        NEG_EDGE = 0,

        POS_EDGE = 1

} edge_t;

#define LED_0                   0x00

#define LED_1                   0x01

#define LED_2                   0x02

#define LED_3                   0x03

#define LED_4                   0x04

#define LED_5                   0x05

#define LED_6                   0x06

#define LED_7                   0x07

#define DIP_0                   0x08

#define DIP_1                   0x09

#define DIP_2                   0x0A

#define DIP_3                   0x0B

#define PUSH_EAST               0x0C

#define PUSH_WEST               0x0D

#define PUSH_NORTH              0x0E

#define PUSH_SOUTH              0x0F

void gpio_init(gpio_t *, long, unsigned long);

void gpio_config_bit(gpio_t *, unsigned long, iotype_t);

void gpio_set_bit(gpio_t *, unsigned long, unsigned long);

void gpio_get_bit(gpio_t *, unsigned long, unsigned long *);

void gpio_add_interrupt(gpio_t *, unsigned int, edge_t,void (*func)() );

void gpio_interrupt(gpio_t *gpio);

#endif