4fe27eb68c
Implement V4L2 device notify callback to handle V4L2_EVENT_SOURCE_CHANGE event from subdevices. HDMI-to-CSI bridge drivers trigger V4L2_EVENT_SOURCE_CHANGE when source DV timing changes are detected or when HDMI hotplug happens. Runtime source parameter changes during active streaming is not allowed and Tegra video driver calls vb2_queue_error to signal a fatal error if a notification of this event happens during an active streaming. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.