extint.h

44B0+uclinux外接键盘驱动程序

#include <linux/types.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/errno.h>

#include <asm-armnommu/uaccess.h>
#include <asm-armnommu/arch-S3C44B0/hardware.h>
#include <asm-armnommu/arch-S3C44B0/irq.h>
#include <asm-armnommu/arch-S3C44B0/irqs.h>

#ifdef MODULE
#include <linux/module.h>
#include <linux/version.h>
#else
#define MOD_INC_USE_COUNT
#define MOD_DEC_USE_COUNT
#endif

#define VPint *(volatile unsigned int *)
#define outl(data,addr)(VPint(addr)=(data))
#define inl(addr)(VPint(addr))

//#define IopCon     (VPint(IOPCON))                                       0605lb
//#define SET_EXTINT(n) IopCon |=(16<<(5*n))   //filter disable            0605lb

#define EXTINT_NAME "extint"
#define EXTINT_MAJOR 240

#define EXTINT_IRQ INT_EINT1   //    INT_EINT4567                              0611md

void extint_init(void);

static int extint_read(struct file *filp,char *buf,size_t count,loff_t *f_pos);
static int extint_write(struct file *filp,char *buf,size_t count,loff_t *f_pos);
static int extint_ioctl(struct inode *inode,struct file *filp,unsigned int cmd,unsigned long arg);
static int extint_open(struct inode *inode,struct file *filp);
static int extint_release(struct inode *inode,struct file *filp);
void extint_handle(int irq,void *dev_id,struct pt_regs *regs);

int key_read(void);


struct file_operations extint_fops={
read:extint_read,
write:  extint_write,
ioctl:  extint_ioctl,
open:   extint_open,
release:   extint_release,	
};