说明：  Linux设备驱动的现状 从non­ os驱动到Linux驱动 内核设施  自旋锁、信号量、互斥量、完成量  异步通知、信号  阻塞与非阻塞  内存与I/O操作，DMA  中断，top  half/bottom  half 字符设备驱动 复杂设备驱动的框架  LCD设备FRAMEBUFFER  FLASH设备MTD  TTY设备  块设备 用户空间的设备驱动 设备驱动开发流程  开发环境建设  调试手段  用户空间测试 设备驱动的学习方法
(The status of Linux device drivers to Linux driver from nonos drive kernel facilities  spin locks, semaphores, mutexes, output  asynchronous notification, signal   blocking and nonblocking memory and I/O operation, DMA  interrupt, top half/bottom half complex character device driver device driver Framework  LCD equipment FRAMEBUFFER  FLASH device MTD  TTY equipment  block device user space device driver device driver development process, development environment    user space debugging tools test equipment driven learning method)