linux camera driver

reference：
https://work-blog.readthedocs.io/en/latest/index.html
https://blog.csdn.net/htjacky?type=blog
https://www.cnblogs.com/rongpmcu/tag/camera驱动/
https://www.kernel.org/doc/html/v4.9/media/kapi/v4l2-subdev.html
https://www.cnblogs.com/embedded-linux/articles/5994860.html


v4l2 ctrl：
https://blog.csdn.net/zzsxyl/article/details/124606735


uvc 摄像头代码解析：
https://blog.csdn.net/orz415678659/article/details/9981879?spm=1001.2014.3001.5502


V4L2：https://www.cnblogs.com/jliuxin/p/14129308.html
V4L2_subdev：http://blog.chinaunix.net/uid-27411029-id-5021269.html


camera 理论基础和工作原理
https://www.cnblogs.com/fjutacm/p/220631977df995512d136e4dbd411951.html