#ifndef AVREMU_PINOUT_H_
#define AVREMU_PINOUT_H_

#include <stdlib.h>


/* Increase these constants as needed. */

/* Maximum number of functions per pin. */
#define AVR_MAX_PIN_FUNCS	10
/* Maximum number of physical pins per device */
#define AVR_MAX_NR_PINS		28



/* The function of a physical pin on the device. */
enum avr_pinout_function {
	PINOUT_NC = 0, /* Not connected */
	PINOUT_VCC,
	PINOUT_GND,
	PINOUT_AVCC,
	PINOUT_AREF,
	PINOUT_PB0,
	PINOUT_PB1,
	PINOUT_PB2,
	PINOUT_PB3,
	PINOUT_PB4,
	PINOUT_PB5,
	PINOUT_PB6,
	PINOUT_PB7,
	PINOUT_PC0,
	PINOUT_PC1,
	PINOUT_PC2,
	PINOUT_PC3,
	PINOUT_PC4,
	PINOUT_PC5,
	PINOUT_PC6,
	PINOUT_PD0,
	PINOUT_PD1,
	PINOUT_PD2,
	PINOUT_PD3,
	PINOUT_PD4,
	PINOUT_PD5,
	PINOUT_PD6,
	PINOUT_PD7,
	PINOUT_RESET,
	PINOUT_RXD,
	PINOUT_TXD,
	PINOUT_INT0,
	PINOUT_INT1,
	PINOUT_T0,
	PINOUT_TOSC1,
	PINOUT_TOSC2,
	PINOUT_T1,
	PINOUT_AIN0,
	PINOUT_AIN1,
	PINOUT_ICP1,
	PINOUT_ADC5,
	PINOUT_ADC4,
	PINOUT_ADC3,
	PINOUT_ADC2,
	PINOUT_ADC1,
	PINOUT_ADC0,
	PINOUT_SCK,
	PINOUT_MISO,
	PINOUT_MOSI,
	PINOUT_SS,
	PINOUT_OC1A,
	PINOUT_PCINT0,
	PINOUT_PCINT1,
	PINOUT_PCINT2,
	PINOUT_PCINT3,
	PINOUT_PCINT4,
	PINOUT_PCINT5,
	PINOUT_PCINT6,
	PINOUT_PCINT7,
	PINOUT_PCINT8,
	PINOUT_PCINT9,
	PINOUT_PCINT10,
	PINOUT_PCINT11,
	PINOUT_PCINT12,
	PINOUT_PCINT13,
	PINOUT_PCINT14,
	PINOUT_PCINT16,
	PINOUT_PCINT17,
	PINOUT_PCINT18,
	PINOUT_PCINT19,
	PINOUT_PCINT20,
	PINOUT_PCINT21,
	PINOUT_PCINT22,
	PINOUT_PCINT23,
	PINOUT_OC2B,
	PINOUT_XCK,
	PINOUT_XTAL1,
	PINOUT_XTAL2,
	PINOUT_OC0B,
	PINOUT_OC0A,
	PINOUT_CLKO,
	PINOUT_SCL,
	PINOUT_SDA,
	PINOUT_OC2A,
	PINOUT_OC1B,
	PINOUT_OC2,
};

/* Data structure of a hardware pin. */
struct avr_hwpin {
	/* The assigned pin number. */
	unsigned int number;
	/* The logical functions assigned to this pin. */
	enum avr_pinout_function funcs[AVR_MAX_PIN_FUNCS];
};

/* Pinout definitions for a specific device. */
struct avr_device_pinout {
	/* Array of pins. */
	struct avr_hwpin *pins;
	/* Number of pins on this device. */
	size_t nr_pins;
};

extern struct avr_device_pinout atmega48_88_168_pinout;
extern struct avr_device_pinout atmega8_pinout;

int avr_get_pin_number(struct avr_device_pinout *pinout,
		       enum avr_pinout_function func);


typedef unsigned int (*pin_query_handler_t)(struct avr_hwpin *pin);
typedef void (*pin_change_handler_t)(struct avr_hwpin *pin, unsigned int state);

/* Dynamic handlers for a physical device pin. */
struct avr_device_pinout_handlers {
	/* Handlers to query the state of a pin from inside of the device. */
	pin_query_handler_t query_handlers[AVR_MAX_NR_PINS];
	/* Handlers to set the state of a pin from inside of the device. */
	pin_change_handler_t change_handlers[AVR_MAX_NR_PINS];
};

extern struct avr_device_pinout_handlers active_pinout_handlers;

#endif /* AVREMU_PINOUT_H_ */