小白求大神帮助：获得引脚值，二楼附代码，非常感谢！

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/delay.h>
#include <asm/irq.h>
#include <asm/arch/regs-gpio.h>
#include <asm/hardware.h>
#include <asm/io.h>
#define DEVICE_NAME "baojing"
#define LED_MAJOR 235
static unsigned long led_table[] = {
S3C2410_GPC6,
S3C2410_GPG0,
S3C2410_GPG9
};
static unsigned int led_cfg_table[] = {
S3C2410_GPC6_OUTP,
S3C2410_GPG0_INP,
S3C2410_GPG9_INP
};
static int qq2440_leds_ioctl(
struct inode *inode,
struct file *file,
unsigned int cmd,
unsigned long arg)
{
if(cmd){
s3c2410_gpio_setpin(led_table[0],0);
}
cmd = s3c2410_gpio_getpin(led_table[1]);
printk("cmd:%d\n",cmd);
cmd = s3c2410_gpio_getpin(led_table[2]); printk("cmd:%d\n",cmd);
printk("\n");
if(cmd){
printk("in if \n");
s3c2410_gpio_setpin(led_table[0],1);
return 1;
}
return 0;
} static struct file_operations qq2440_leds_fops = {
.owner = THIS_MODULE,
.ioctl = qq2440_leds_ioctl,
}; static int __init qq2440_leds_init(void)
{
int ret;
int i;
ret = register_chrdev(LED_MAJOR, DEVICE_NAME, &qq2440_leds_fops);
if (ret < 0) {
printk(DEVICE_NAME " can't register major number\n");
return ret;
}
for(i=0;i<3;i++){
s3c2410_gpio_cfgpin(led_table[i], led_cfg_table[i]); //cfg config
s3c2410_gpio_setpin(led_table[i], 1);
}
printk(DEVICE_NAME " initialized\n");
return 0;
}
static void __exit qq2440_leds_exit(void)
{
unregister_chrdev(LED_MAJOR, DEVICE_NAME);
}
module_init(qq2440_leds_init);
module_exit(qq2440_leds_exit);