i2c-keypad.h

Linux下I2C以及I2C下的键盘驱动

#ifndef I2C_KEYPAD_H
#define I2C_KEYPAD_H

#include <linux/tqueue.h>

#include "i2c-aa.h"
#define MOD_NAME "i2c-keypad"
//#define KEYPAD_NAME "keypad"

/* KEYPAD register */
/*
unsigned long READREG(unsigned long r)
{
	volatile unsigned long * addr;
	addr = (unsigned long *)r;	
	return *(volatile unsigned long *)addr;
}

void WRITEREG(unsigned long r, unsigned long val)
{
	volatile unsigned long * addr;
	addr = (unsigned long *)r;
	*(volatile unsigned long *)addr = val;
}
*/
//read-only
#define KEYPAD_SSR_B		0xf021C124
#define KEYPAD_ISR_B		0xf021C134

//write-able---for the GPIO utilization, it is meaningless.
#define KEYPAD_GPR_B		0xf021C138

//write-able
#define KEYPAD_DDIR_B		0xf021C100
#define KEYPAD_ICONFA1_B	0xf021C10C
#define KEYPAD_ICONFB1_B	0xf021C114
#define KEYPAD_GIUS_B		0xf021C120
#define KEYPAD_ICR1_B		0xf021C128

#define KEYPAD_IMR_B		0xf021C130
#define KEYPAD_PUEN_B		0xf021C140

//MACROS
#define KEYPAD_GPIO_INT_B		12
//#define KEYPAD_NAME 		"keypad"

#define I2C_ADDR_KEYPAD     0x48//for I2C read


#define PRESS_NO			0
#define PRESS_DOWN			1
#define PRESS_UP			2

#define  MAX_ID 	0x14

struct keypad_struct
{
//	wait_queue_head_t gkeypadWait;
	int gKeypadFlag;
	int gDataFlag; /* flag if the driver buf is full */
};

#ifdef TEST
#define PTD_BASE_ADDR           0x0021C300                
#define PTD_DDIR                PTD_BASE_ADDR                
#define PTD_OCR1                (PTD_BASE_ADDR+0x04)                
#define PTD_OCR2                (PTD_BASE_ADDR+0x08)                
#define PTD_ICONFA1             (PTD_BASE_ADDR+0x0C)                
#define PTD_ICONFA2             (PTD_BASE_ADDR+0x10)                
#define PTD_ICONFB1             (PTD_BASE_ADDR+0x14)                
#define PTD_ICONFB2             (PTD_BASE_ADDR+0x18)                
#define PTD_DR                  (PTD_BASE_ADDR+0x1C)                
#define PTD_GIUS                (PTD_BASE_ADDR+0x20)                
#define PTD_SSR                 (PTD_BASE_ADDR+0x24)                
#define PTD_ICR1                (PTD_BASE_ADDR+0x28)                
#define PTD_ICR2                (PTD_BASE_ADDR+0x2C)                
#define PTD_IMR                 (PTD_BASE_ADDR+0x30)                
#define PTD_ISR                 (PTD_BASE_ADDR+0x34)                
#define PTD_GPR                 (PTD_BASE_ADDR+0x38)                
#define PTD_SWR                 (PTD_BASE_ADDR+0x3C)                
#define PTD_PUEN                (PTD_BASE_ADDR+0x40) 
#define MX1_REG_PTD_DDIR                (*((volatile unsigned long *)(IO_ADDRESS(PTD_DDIR))))
#define MX1_REG_PTD_OCR1                (*((volatile unsigned long *)(IO_ADDRESS(PTD_OCR1))))
#define MX1_REG_PTD_OCR2                (*((volatile unsigned long *)(IO_ADDRESS(PTD_OCR2))))
#define MX1_REG_PTD_ICONFA1             (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICONFA1))))
#define MX1_REG_PTD_ICONFA2             (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICONFA2))))
#define MX1_REG_PTD_ICONFB1             (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICONFB1))))
#define MX1_REG_PTD_ICONFB2             (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICONFB2))))
#define MX1_REG_PTD_DR                  (*((volatile unsigned long *)(IO_ADDRESS(PTD_DR))))
#define MX1_REG_PTD_GIUS                (*((volatile unsigned long *)(IO_ADDRESS(PTD_GIUS))))
#define MX1_REG_PTD_SSR                 (*((volatile unsigned long *)(IO_ADDRESS(PTD_SSR))))
#define MX1_REG_PTD_ICR1                (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICR1))))
#define MX1_REG_PTD_ICR2                (*((volatile unsigned long *)(IO_ADDRESS(PTD_ICR2))))
#define MX1_REG_PTD_IMR                 (*((volatile unsigned long *)(IO_ADDRESS(PTD_IMR))))
#define MX1_REG_PTD_ISR                 (*((volatile unsigned long *)(IO_ADDRESS(PTD_ISR))))
#define MX1_REG_PTD_GPR                 (*((volatile unsigned long *)(IO_ADDRESS(PTD_GPR))))
#define MX1_REG_PTD_SWR                 (*((volatile unsigned long *)(IO_ADDRESS(PTD_SWR))))
#define MX1_REG_PTD_PUEN                (*((volatile unsigned long *)(IO_ADDRESS(PTD_PUEN))))
#endif		

#endif //I2C_KEYPAD_H