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#ifndef _PXA255_GPIO_H_

#define _PXA255_GPIO_H_

#include "mem.h"

#include "CPU.h"

#include "pxa255_IC.h"

/*

	PXA255 OS GPIO controller

*/

#define PXA255_GPIO_BASE		0x40E00000UL

#define PXA255_GPIO_SIZE		0x00001000UL

typedef struct{

	Pxa255ic* ic;

	UInt32 latches[3];		//what pxa wants to be outputting

	UInt32 inputs[3];		//what pxa is receiving	[only set by the pxa255gpioSetState() API]

	UInt32 levels[3];		//what pxa sees (it differs from above for IN pins)

	UInt32 dirs[3];			//1 = output

	UInt32 riseDet[3];		//1 = rise detect

	UInt32 fallDet[3];		//1 = fall detect

	UInt32 detStatus[3];		//1 = detect happened

	UInt32 AFRs[6];			//1, 2, 3 = alt funcs

}Pxa255gpio;

#define PXA255_GPIO_LOW			0		//these values make it look like all HiZ, AFR, and nonexistent pins have pullups to those who dumbly assume gpioGEt returns a boolean

#define PXA255_GPIO_HIGH		1

#define PXA255_GPIO_HiZ			2

#define PXA255_GPIO_AFR1		3

#define PXA255_GPIO_AFR2		4

#define PXA255_GPIO_AFR3		5

#define PXA255_GPIO_NOT_PRESENT		6

Boolean pxa255gpioInit(Pxa255gpio* gpio, ArmMem* physMem, Pxa255ic* ic);

//for external use :)

UInt8 pxa255gpioGetState(Pxa255gpio* gpio, UInt8 gpioNum);

void pxa255gpioSetState(Pxa255gpio* gpio, UInt8 gpioNum, Boolean on);	//we can only set value (and only of input pins), not direction

#endif