1. v4l2_async_notifier的概念 v4l2_async_notifier是Linux V4L2(Video for Linux 2)异步框架中的一个关键组件,用于实现子设备(v4l2_subdev)的异步注册和管理。它允许设备驱动程序在设备实际准备好之前进行注册,并通过回调机制在设备准备就绪时通知V4L2核心进行后续处理。
3.1.1.3.1.1 v4l2_async_notifier_operations structv4l2_async_notifier_operations{int(*bound)(structv4l2_async_notifier *notifier,structv4l2_subdev *subdev,structv4l2_async_subdev *asd);/// 设备绑定时的处理函数,比如配置v4l2_mbus_config,配置v4l2_mbus_typeint(*complete)(structv4l2_async_notifier *no...
This is +performed using the v4l2_async_notifier_register() call. To unregister the +notifier the driver has to call v4l2_async_notifier_unregister(). The former of +the two functions takes two arguments: a pointer to struct v4l2_device and a +pointer to struct v4l2_async_notifier. The ...
> -pointer to struct :c:type:`v4l2_async_notifier`. > - > -Before registering the notifier, bridge drivers must do two things: > -first, the notifier must be initialized using the > -:c:func:`v4l2_async_notifier_init`. Second, bridge drivers can then > -begin to form a list of ...