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267b9cdee5
Add handling of the Lenovo-specific and HP-specific EFI variables for speaker ID. Future Lenovo and HP models will not give the codec driver access to the speaker detect GPIO. Instead, the BIOS will read the GPIO and create an EFI variable with a value indicating the state of the GPIO. The Lenovo and HP EFI variables are both defined to have only two valid values. But the variable name, GUID and values are different. This adds a new exported function cs_amp_get_vendor_spkid(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Message-ID: <20250909113039.922065-3-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 reStructuredText 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.