[PATCH 0/4] ASoC: qcom: Parse "pin-switches" and "widgets" from DT

[Stephan Gerhold]

Some sound card setups might require extra pin switches to allow 
turning off certain audio components. simple-card supports this
already using the "pin-switches" and "widgets" device tree property. 
This series makes it possible to use the same properties for the Qcom 
sound cards.

To implement that, the function that parses the "pin-switches" property 
in simple-card-utils.c is first moved into the ASoC core. Then two 
simple function calls are added to the common Qcom sound card DT parser.
Finally there is a small patch for the msm8916-wcd-analog codec to make
it possible to model sound card setups used in some MSM8916 smartphones.
(See PATCH 2/4 for an explanation of some real example use cases.)

Using pin switches rather than patching codec drivers with switches was
originally suggested by Mark Brown on a patch for the tfa989x codec:
https://lore.kernel.org/alsa-devel/YXaMVHo9drCIuD3u@sirena.org.uk/

Stephan Gerhold (4):
  ASoC: core: Add snd_soc_of_parse_pin_switches() from simple-card-utils
  ASoC: dt-bindings: qcom: sm8250: Document "pin-switches" and "widgets"
  ASoC: qcom: common: Parse "pin-switches" and "widgets" from DT
  ASoC: msm8916-wcd-analog: Use separate outputs for HPH_L/HPH_R

 .../bindings/sound/qcom,sm8250.yaml           | 16 ++++++
 include/sound/soc.h                           |  1 +
 sound/soc/codecs/msm8916-wcd-analog.c         |  7 +--
 sound/soc/generic/simple-card-utils.c         | 45 +----------------
 sound/soc/qcom/common.c                       | 10 ++++
 sound/soc/soc-core.c                          | 50 +++++++++++++++++++
 6 files changed, 82 insertions(+), 47 deletions(-)

-- 
2.34.1