#include <linux/module.h>#include <linux/kernel.h>#include <linux/fs.h>#include <linux/init.h>#include <linux/delay.h>#include <linux/irq.h>#include <asm/uaccess.h>#include <asm/irq.h>#include <asm/io.h>#include <linux/poll.h>#include <linux/device.h>static struct class *Myleddrv_class; //自动注册驱动主设备static struct device *Myleddrv_dev;volatile unsigned long *gpbcon = NULL; //控制寄存器volatile unsigned long *gpbdat = NULL; //数据寄存器static int Myleddrv_open(void){printk("Hello Linux World!\n");return 0;}static int Myleddrv_write(void){return 0;}static struct file_operations Myleddrv_fops = {.owner = THIS_MODULE, /* 这是一个宏，，推向编译模块时自动创建的__this_module变量 */.open = Myleddrv_open,.write=Myleddrv_write,};static int major; //全局变量static int Myleddrv_init(void){major = register_chrdev(0, "Myleddrv", &Myleddrv_fops); // 注册, 告诉内核Myleddrv_class = class_create(THIS_MODULE, "Myleddrv");Myleddrv_dev = device_create(Myleddrv_class, NULL, MKDEV(major, 0), NULL, "Myleddrv"); /* /dev/Myleddrv */return 0;}static void Myleddrv_exit(void){unregister_chrdev(major, "Myleddrv"); // 卸载printk("Myleddrv has been unregistered!\n");device_unregister(Myleddrv_dev);class_destroy(Myleddrv_class,major);}module_init(Myleddrv_init);module_exit(Myleddrv_exit);MODULE_LICENSE("GPL");
没有什么可留恋，只有抑制不住的梦想，
