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It has been recently found that certain 'active' headsets can be mis-detected as OMTP instead of CTIA, causing obvious issus with audio quality. This relates to increased resistances which negatively impacts the pole detection circuitry within the device. To counter this, ground switches on both headphone channels are available to enable/disable and these allow for the detection process to operate as intended, even with active headsets. This commit adds control of the ground switches to the AAD logic. Signed-off-by: Adam Thomson <DLG-Adam.Thomson.Opensource@dm.renesas.com> Link: https://lore.kernel.org/r/e0a627725c189dd50d6ce24571aed87fe2597395.1653916368.git.DLG-Adam.Thomson.Opensource@dm.renesas.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.