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a57a46b932
The commentary says to use various parameters, and lays out what the mapping is... The code used a 32KHz rate when the comment says that it needs to use a 48KHz rate. And this has been the case since day one. On the Alienware M17x R4, the DMic used to have exceptionally quiet pickup and a lot of noise. Changing the data rate fixes both of these issues. Searching the kernel bug tracker for ca0132-related issues shows no mention of this being an issue for other hardware, and I have no other hardware to test with, so a quirk is used to limit the effect to just the M17x R4. Signed-off-by: Alastair Bridgewater <alastair.bridgewater@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.