嵌入式驱动开发之内核态spi ---module_spi_driver
http://blog.csdn.net/dearsq/article/details/51839083
http://blog.csdn.net/alleincao/article/details/7525977
http://fpcfjf.blog.163.com/blog/static/55469793201292991952106/
root
http://blog.csdn.net/dearsq/article/details/51839083
http://blog.csdn.net/alleincao/article/details/7525977
http://fpcfjf.blog.163.com/blog/static/55469793201292991952106/