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ÔÚLinux2.6.25Äں˴úÂëÖУ¬ÒѾ­ÌṩÁËÕë¶ÔÈýÐÇS3C2410/S3C2440µÈоƬGPIOµÄ¿ØÖÆ£¬ÏÂÃæÀ´·Ö±ð½éÉÜÒ»°ãÈçºÎÅäÖᢹÜÀíGPIO¡£
       ÏÂÃæµÄº¯ÊýÊÇÓÃÀ´¸ù¾ÝÐµĹ¦ÄÜÐèÇóÅäÖÃÒ»¸öGPIOÒý½Å£¨¶¨ÒåÔÚarch/arm/plat-s3c24xx/gpio.c£©£º
     1    void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function)
     2    {
     3           void __iomem *base = S3C24XX_GPIO_BASE(pin);
     4           unsigned long mask;
     5           unsigned long con;
     6           unsigned long flags;
     7   
     8           if (pin < S3C2410_GPIO_BANKB) {
     9                  mask = 1 << S3C2410_GPIO_OFFSET(pin);
    10           } else {
    11                  mask = 3 <


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