#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <asm/io.h>

static int led_init(void)
{
  void *target;

  target=ioremap(0x7210UL,4);

  printk("readw is:%x\n", readw(target));

  /* to switch led on */
  writew(0x2,target);

  printk("readw is:%x\n", readw(target));

  return 0;
}

static void led_exit(void)
{
  void *target;

  target=ioremap(0x7210UL,4);

  printk("readw is:%x\n", readw(target));

  /* to switch led off */
  writew(0x0,target);

  printk("readw is:%x\n\n", readw(target));
}

module_init(led_init);
module_exit(led_exit);

MODULE_LICENSE("Dual BSD/GPL");