9f27530a73
Merge series from Martin Povišer <povik+lin@cutebit.org>: there's a CS42L83 headphone jack codec found in Apple computers (in the recent 'Apple Silicon' ones as well as in earlier models, one example [1]). The part isn't publicly documented, but it appears almost identical to CS42L42, for which we have a driver in kernel. This series adapts the CS42L42 driver to the new part, and makes one change in anticipation of a machine driver for the Apple computers. Patch 1 adds new compatible to the cs42l42 schema. Patches 2 to 7 are taken from Richard's recent series [2] adding soundwire support to cs42l42. They are useful refactorings to build on in the later patches, and also this way our work doesn't diverge. (I fixed missing free_irq path in cs42l42_init, did s/Soundwire/SoundWire/ in changelogs, rebased.) Patch 8 exports some regmap-related symbols from cs42l42.c so they can be used to create cs42l83 regmap in cs42l83-i2c.c later. Patch 9 is the cs42l83 support proper. Patch 10 implements 'set_bclk_ratio' on the cs42l42 core. This will be called by the upcoming ASoC machine driver for 'Apple Silicon' Macs. (We have touched on this change to be made in earlier discussion, see [3] and replies.) Patch 11 brings cs42l42-i2c.c in sync with cs42l83-i2c.c on dev_err_probe() usage.
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.