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        ÔÚÕâÀïÎÒÓõİå×ÓÊÇmicro2440°å×Ó£¬°å×ÓÉϵÄlinux°æ±¾ÊÇ2.6.13¡£ÒòΪÎÒÔÚǰһƪ½éÉÜÁËÇý¶¯±à³ÌµÄÁ½ÖÖ¿ò¼ÜÉè¼Æ£¬ËùÒÔÏÖÔÚÎÒ¾ÍÀ´·Ö±ðдһÏÂÕâÁ½ÖÖ¿ò¼ÜÉè¼ÆµÄ³ÌÐò¡£
¿ª·¢Æ½Ì¨£ºRED HAT LINUX 9£¨Linux 2.4.18£©
¿ª·¢°å£ºmicro2440£¨ÓÑÉÆÖ®±Û£©£¨Linux 2.6.13)
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2.4ÄÚºËÇý¶¯¿ò¼Ü£º
static int __init leds_init(void)
{
 int result;
 int i;
 result = register_chrdev(LED_MAJOR, DEVICE_NAME, &leds_fops);
 if(result < 0){
  printk(DEVICE_NAME "can't register major number\n");
  return result;
 }
 
// static devfs_handle_t devfs_handle;
// devfs_handle = devfs_register(NULL, DEVICE_NAME, DEVFS_FL_DEFAULT, LED_MAJOR, &leds_fops, NULL);
/*
*Ö®ËùÒÔ²»ÓÃdevfs_register£¬¶øÓÃdevfs_mk_cdev£¬Ô­ÒòÊÇÒòΪÔÚlinux2.6ÄÚºËÀïûÓÐdevfs_registerº¯Êý£¬¶ø¸ÄÓÃ*devfs_mk_cdev
*/
 devfs_mk_cdev(MKDEV(LED_MAJOR, 0), S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP, DEVICE_NAME);
 for(i = 0; i < 4; i++){
  s3c2410_gpio_cfgpin(led_table[i], led_cfg_table[i]);
  s3c2410_gpio_setpin(led_table[i], 1);
 }
 printk(DEVICE_NAME "initialized\n");
 return 0;
}
static void __exit leds_exit(void)
{
 devfs_remove(DEVICE_NAME);
 unregister_chrdev(LED_MAJOR, DEVICE_NAME);
}
---------------------------------------------------------------------
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2.6ÄÚºËÇý¶¯¿ò¼Ü£º
static int __init leds_init(void)
{
 int result;
 int i;
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