[PATCH v3 0/4] ASoC: codecs: wcd937x: add USB Type-C analog audio mux support

[Val Packett <val@packett.cool>]

Currently only wcd939x has support for USB-C SBU audio in mainline, but the
older WCD codecs can do the same thing 939x does with USBSS, with an
external 3rd party mux instead. This series adds support for that based on
wcd939x code.

Tested on sm7325-motorola-dubai.

v3:
  * Zero initialize the device_node with the __free, oops (sashiko-bot)
  * Clear the pointer in wcd93[79]x_mbhc_deinit before tearing down the
    actual wcd_mbhc object (sashiko-bot)
    * Hopefully this is good enough to satisfy the concern about
      getting a typec notification *while removing the codec* which is
      something that has an extremely low chance of ever happening in
      practice anyway. I'm not adding an extra mutex for this. I'm tired.
  * Pull R-b for the commit in the middle but not for the other ones
    because of the changes above.. (prooobably would've been ok but well)
v2: https://lore.kernel.org/all/20261020082631.1509275-1-val@packett.cool/
v1: https://lore.kernel.org/all/20261018231244.1266926-1-val@packett.cool/

Thanks,
~val

---

Val Packett (4):
  ASoC: dt-bindings: qcom,wcd937x: Add USB-C graph properties
  ASoC: codecs: wcd937x: add USB Type-C analog audio mux support
  ASoC: codecs: wcd-mbhc: guard against NULL cfg in
    typec_report_(un)plug
  ASoC: codecs: wcd939x: fix ref leak and NULL deref with USB-C audio

 .../bindings/sound/qcom,wcd937x.yaml          |  15 ++
 sound/soc/codecs/Kconfig                      |   2 +
 sound/soc/codecs/wcd-mbhc-v2.c                |   4 +-
 sound/soc/codecs/wcd937x.c                    | 170 +++++++++++++++++-
 sound/soc/codecs/wcd939x.c                    |  21 ++-
 5 files changed, 198 insertions(+), 14 deletions(-)

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2.55.0