[PATCH v4 0/8] ASoC: Qualcomm Tambora (WCD9378) SDCA codec

[Srinivas Kandagatla]

Add support for the Qualcomm Tambora (WCD9378) headset codec in
SDCA-compliant mode over SoundWire. On ARM/DT platforms without
ACPI/DisCo firmware, the SDCA topology and SoundWire port properties
are supplied as static data through the codec driver.

Patches 1-6 extend the ASoC SDCA class framework so that a
class-based codec driver can be built on ARM/DT: allow builds
without ACPI, expose the SoundWire probe/remove library entry
points, add class_ops with a populate_function hook, translate
sound-dai cells by entity index, and add a
sdca_apply_default_control_classifiers() helper.

Patches 7-8 add the WCD9378 dt-binding and driver. The same
silicon can be fused for a mobile (non-SDCA) or an SDCA-compliant
mode; the two share the SoundWire class-ID compatible
(sdw20217011000) and are selected apart by the new
qcom,sdca-compliant boolean property.

Testing: HPH playback and headset-mic capture tested on the
Snapdragon X2 Elite Glymur CRD and Lenovo T14s Gen7.

Jack detection is not wired up in this series.

Changes since v3 [1]:
 - dt-bindings: sound: qcom,wcd9378-sdw.yaml -- drop the
   qcom,wcd9378c front compatible so the schema plays nicely with
   the SoundWire class-ID compatible; introduce a
   qcom,sdca-compliant boolean flag to select the SDCA fuse; drop
   the fake top-level wrapper node so the slave sits directly
   under the SoundWire controller; drop '|' from qcom,port-mapping
   description (Krzysztof).
 - ASoC: codecs: wcd9378-sdca: gate probe on qcom,sdca-compliant.
 - set SDCA_NO_INTERRUPT correctly on controls, (Mark)

[1] https://lore.kernel.org/all/20260915165652.914893-1-srinivas.kandagatla@xxxxxxxxxxxxxxxx/

Srinivas Kandagatla (8):
  ASoC: SDCA: allow building without ACPI
  ASoC: SDCA: export PM helpers keyed on sdca_class_drv
  ASoC: SDCA: expose class SoundWire probe/remove as library
  ASoC: SDCA: add class_ops with populate_function
  ASoC: SDCA: class_function: xlate sound-dai cell by entity index
  ASoC: SDCA: add sdca_apply_default_control_classifiers() helper
  dt-bindings: sound: qcom: add Tambora WCD9378 SDCA codec
  ASoC: codecs: add Qualcomm Tambora (WCD9378) SDCA codec

 .../bindings/sound/qcom,wcd9378-sdw.yaml      |  102 ++
 include/sound/sdca.h                          |   23 +-
 include/sound/sdca_class.h                    |   70 ++
 include/sound/sdca_function.h                 |    2 +
 sound/soc/codecs/Kconfig                      |   11 +
 sound/soc/codecs/Makefile                     |    2 +
 sound/soc/codecs/wcd9378-sdca.c               | 1058 +++++++++++++++++
 sound/soc/codecs/wcd9378-sdca.h               |   20 +
 sound/soc/codecs/wcd9378-sdw.c                |   51 +
 sound/soc/sdca/Kconfig                        |    6 +-
 sound/soc/sdca/sdca_class.c                   |  148 ++-
 sound/soc/sdca/sdca_class.h                   |   35 -
 sound/soc/sdca/sdca_class_function.c          |   45 +-
 sound/soc/sdca/sdca_device.c                  |    4 +
 sound/soc/sdca/sdca_functions.c               |   31 +
 15 files changed, 1537 insertions(+), 71 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd9378-sdw.yaml
 create mode 100644 include/sound/sdca_class.h
 create mode 100644 sound/soc/codecs/wcd9378-sdca.c
 create mode 100644 sound/soc/codecs/wcd9378-sdca.h
 create mode 100644 sound/soc/codecs/wcd9378-sdw.c
 delete mode 100644 sound/soc/sdca/sdca_class.h

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2.53.0