• Mark Brown's avatar
    Support for CS42L83 on Apple machines · 9f27530a
    Mark Brown authored
    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.
    9f27530a
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