[PATCH v2 0/3] ASoC: add CS42L84 codec driver

[James Calligeros <jcalligeros99@gmail.com>]

Hi all,

This is version 2 of the Cirrus Logic CS42L84 ASoC codec driver.

This patch set adds a driver for the Cirrus Logic CS42L84 codec. This chip
is (so far) found only on Apple Silicon Macs. In keeping with proud Apple
tradition, the CS42L84 is essentially just a CS42L42 with a different
regmap and no publicly available datasheet. It may also be missing its
parent's S/PDIF capabilities as none of Apple's devices support S/PDIF out,
however this cannot be positively confirmed.

This driver has lived in the downstream Asahi tree for quite a while now,
and gained some refinements along the way. I have squashed most of these
into the initial driver commit as they were small changes like tweaking
msleep()s or filling out TLVs, but left seperate a larger change to
tip/ring sense IRQ handling as it differs significantly from what is found
in the CS42L42 driver.

---
Changes in v2:
- Fixed failing DT binding checks. Sorry! (Patch 1)

- Added Martin's name to the DT binding maintainer list (Patch 1)

- Documented #sound-dai-cells property in DT binding (Patch 1)

- Dropped superfluous DT binding descriptions (Patch 1)

- Fixed DT binding description whitespace  (Patch 1)

- Fixed licence comment format in cs42l42.h (Patch 2)

- Fixed erroneous whitespace in cs42l84.h (Patch 2)

- Switched driver to use maple tree for regcache (Patch 2)

- Lowered max_register property to address of highest observed register (Patch 2)

- Fixed switch/case statement style (Patches 2, 3)

- Picked up Neal's Reviewed-by

- Link to v1: https://lore.kernel.org/r/20241016-cs42l84-v1-0-8d7e9d437d2d@gmail.com

---
James Calligeros (1):
      ASoC: cs42l84: leverage ring sense IRQs to correctly detect headsets

Martin Povišer (2):
      dt-bindings: sound: Add CS42L84 codec
      ASoC: cs42l84: Add new codec driver

 .../bindings/sound/cirrus,cs42l84.yaml   |   56 ++
 MAINTAINERS                              |    2 +
 sound/soc/codecs/Kconfig                 |    7 +
 sound/soc/codecs/Makefile                |    2 +
 sound/soc/codecs/cs42l84.c               | 1112 +++++++++++++++++++++++++
 sound/soc/codecs/cs42l84.h               |  210 +++++
 6 files changed, 1389 insertions(+)
---
base-commit: 469819cc17368702a6f68cec2148f518d3f3679b
change-id: 20241016-cs42l84-f38348d21c88

Best regards,
-- 
James Calligeros <jcalligeros99@gmail.com>