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/**********************************************************
* s3c2440-keyboard.c
*
* keyboard driver for S3C2440 based PDA
*
*
* History:2007/04/30
*
*
***********************************************************/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/poll.h>
#include <linux/spinlock.h>
#include <asm/irq.h>
#include <asm/arch/irq.h>
#include <asm/arch/irqs.h>
#include <asm/arch/clocks.h>
#include <asm/hardware.h>
#include <asm/arch/S3C2440.h>
#define DEVICE_NAME "s3c2440-kb" //¼üÅÌÉ豸Ãû
static int kbMajor = 0; //ĬÈϵÄÖ÷É豸ºÅ
#define MAX_KB_BUF 10 //Ñ»·¶ÓÁеijߴç
typedef struct {
unsigned int keyStatus;
int irq;
// int timeCount;
u_short buf[MAX_KB_BUF]; /* Ñ»·¶ÓÁÐ*/
unsigned int head, tail; /* Ñ»·¶ÓÁеĶÁдָÕë*/
spinlock_t lock; /*Ëø*/
} KB_DEV;
static KB_DEV kbdev;
#define KEY_UP 0 //°´¼üµ¯Æð
#define KEY_DOWN 1 //°´¼ü°´ÏÂ
#define NO_KEY_DOWN 2 //ûÓмü°´ÏÂ
#define EINT1_DOWN 0
#define EINT3_DOWN 1
#define EINT8_DOWN 2
#define NO_EINT_DOWN 3
/*Ñ»·¶ÓÁвÙ×÷*/
#define BUF_HEAD (kbdev.buf[kbdev.head])
#define BUF_TAIL (kbdev.buf[kbdev.tail])
#define INCBUF(x) if((++x)==MAX_KB_BUF) x=0
/*¶¨Ê±Æ÷ÉèÖÃ*/
#define KB_TIMER_DELAY (HZ/50) /*HZ±íʾÿÃë²úÉúµÄʱÖӵδðÊý,¶¨Ê±Æ÷³¬Ê±Îª20ms*/
#define REPEAT_START_DELAY (HZ) /* ×Ô¶¯Öظ´¿ªÊ¼ÑÓʱ:1Ãë*/
#define REPEAT_DELAY (HZ/2) /*×Ô¶¯Öظ´ÑÓʱ:0.5Ãë*/
static struct timer_list kb_timer;
static struct timer_list repeat_timer;
spinl
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