f8593e8854
Add system suspend functions to handle clean power-down on suspend and restoring registers on resume. The jack state could change during suspend. Plug->unplug and unplug->plug are straightforward because this looks no different from any other plug state change - there will be a plugged or unplugged interrupt pending. The jack could be unplugged and a different type of jack plugged, and on resume the plug state would not have changed. Setting plug_state back to TS_TRANS (transitioning) will make the next plug interrupt after resume run a type detection. During system suspend any jack plug/unplug and button events will not be reported or generate a system wakeup. If the plug state or headset type has changed it will be reported after resume. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20220121120412.672284-4-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@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.