linux-kernel - [PATCH v9 0/9] ASoC: codecs: add wcd938x support

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Date:   Wed,  9 Jun 2021 10:09:34 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     robh@...nel.org, devicetree@...r.kernel.org, perex@...ex.cz,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        lgirdwood@...il.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v9 0/9] ASoC: codecs: add wcd938x support

This patchset adds support for Qualcomm WCD938X codec.

Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC
connected over SoundWire. This device has two SoundWire devices, RX and
TX respectively supporting 4 x ADCs, ClassH, Ear, Aux PA, 2xHPH,
7 x TX diff inputs, 8 DMICs and MBHC.

Eventhough this device has two SoundWire devices, only tx device has
access to main codec Control/Status Registers!

For codec driver to be functional it would need both tx and rx Soundwire devices
to be up and this is taken care by using device component framework and device-links
are used to ensure proper pm dependencies. Ex tx does not enter suspend
before rx or codec is suspended.

This patchset along with other SoundWire patches on the list
have been tested on SM8250 MTP device.

Thanks,
srini

Changes since v8:
 - moved Kconfig and Makefile changes to last patch as suggested by Mark
 - removed array of enums and used static entries instead. Suggested by Mark
 - return true if put succeeds, Suggested by Mark
 - removed some unneeded semi-colons in switch

Srinivas Kandagatla (9):
  ASoC: dt-bindings: wcd938x: add bindings for wcd938x
  ASoC: codecs: wcd-clsh: add new version support
  ASoC: codecs: wcd938x: add basic driver
  ASoC: dt-bindings: wcd938x-sdw: add bindings for wcd938x-sdw
  ASoC: codecs: wcd938x-sdw: add SoundWire driver
  ASoC: codecs: wcd938x: add basic controls
  ASoC: codecs: wcd938x: add playback dapm widgets
  ASoC: codecs: wcd938x: add capture dapm widgets
  ASoC: codecs: wcd938x: add audio routing and Kconfig

 .../bindings/sound/qcom,wcd938x-sdw.yaml      |   70 +
 .../bindings/sound/qcom,wcd938x.yaml          |  146 +
 sound/soc/codecs/Kconfig                      |   14 +
 sound/soc/codecs/Makefile                     |    4 +
 sound/soc/codecs/wcd-clsh-v2.c                |  348 +-
 sound/soc/codecs/wcd-clsh-v2.h                |   16 +
 sound/soc/codecs/wcd938x-sdw.c                |  315 ++
 sound/soc/codecs/wcd938x.c                    | 3753 +++++++++++++++++
 sound/soc/codecs/wcd938x.h                    |  720 ++++
 9 files changed, 5376 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd938x-sdw.yaml
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd938x.yaml
 create mode 100644 sound/soc/codecs/wcd938x-sdw.c
 create mode 100644 sound/soc/codecs/wcd938x.c
 create mode 100644 sound/soc/codecs/wcd938x.h

-- 
2.21.0