044c765712
Some devices (HP Elitepad 1000 G2) have a second headphones output (1 on the dock, 2nd on the tablet itself) which is implemented through the line-out output of the codec combined with an external hp-amp which gets enabled through the codec's GPIO1 pin. Add support for this through a new BYT_RT5640_LINEOUT_AS_HP2 quirk, note users are expected to use this combined with the BYT_RT5640_LINEOUT quirk. If that quirk is not set the new quirk is ignored. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20210802142501.991985-5-hdegoede@redhat.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.