USB webcam driver development based on embedded Linux

The hierarchical structure of modules making up of USB based on webcam driver is described,including main controller driver,core sub-system driver and USB device driver,the hierarchical structure of modules USB webcam driver is also introduced,the usbvideo module is analyzed,the function of usbvideo module is classfied,and one of its bugs is corrected,the detailed implementation of webcam driver is given,at last,the USB webcam driver is planted into the development board of Samsung's SMDK2410 and then successfully ports it to the embedded Linux.