linux驱动学习——驱动大致框架教程

以led为例子 非设备树 这样需要在open read write函数中 对硬件做处理 通用性较差

static int major = 0;

static int led_drv_open (struct inode *node, struct file *file)
static int led_drv_close (struct inode *node, struct file *file)
static ssize_t led_drv_write (struct file *file, const char __user *buf, size_t size, loff_t *offset)
static ssize_t led_drv_read (struct file *file, char __user *buf, size_t size, loff_t *offset)
。。。。

static struct file_operations led_drv = {
    .owner     = THIS_MODULE,
    .open    = led_drv_open,
    .read    = led_drv_read,
    .write   = led_drv_write,
    .release = led_drv_close,
};

module_init(xxx_init);
module_exit(xxx_exit);

MODULE_LICENSE("GPL");