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

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Message-Id: <20241020-cs42l84-v2-0-37ba2b6721d9@gmail.com>
Date: Sun, 20 Oct 2024 00:47:30 +1000
From: James Calligeros <jcalligeros99@...il.com>
To: Martin Povišer <povik+lin@...ebit.org>, 
 James Calligeros <jcalligeros99@...il.com>, 
 David Rhodes <david.rhodes@...rus.com>, 
 Richard Fitzgerald <rf@...nsource.cirrus.com>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>
Cc: asahi@...ts.linux.dev, linux-sound@...r.kernel.org, 
 patches@...nsource.cirrus.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Hector Martin <marcan@...can.st>, 
 Neal Gompa <neal@...pa.dev>
Subject: [PATCH v2 0/3] ASoC: add CS42L84 codec driver

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@...il.com>