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b78dd64208Search for an HP-specific EFI variable for calibration before falling back to the normal Cirrus Logic EFI variable. Future HP models will use an HP-defined EFI variable for storage of amp calibration data. The content is the same as the normal Cirrus Logic EFI variable. The first step in cs_amp_get_cal_efi_buffer() is to get the size of the EFI variable, so this has been made a loop that walks through an array of possible variables. A small change is needed to the KUnit test, which is included in this patch. Originally the cs_amp_lib_test_get_efi_variable() hook function asserted that the passed name and GUID matched the Cirrus Logic EFI variable. Obviously this will fail because the code now tries the HP definition first. The function has been changed to return EFI_NOT_FOUND instead, which emulates the normal behaviour of trying to get the HP variable on a system that has the Cirrus variable. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Message-ID: <20250909113039.922065-6-rf@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.