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- To: Herve Codina <herve.codina@xxxxxxxxxxx>, Liam Girdwood <lgirdwood@xxxxxxxxx>, Mark Brown <broonie@xxxxxxxxxx>, Rob Herring <robh+dt@xxxxxxxxxx>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>, Jonathan Cameron <jic23@xxxxxxxxxx>, Lars-Peter Clausen <lars@xxxxxxxxxx>, Jaroslav Kysela <perex@xxxxxxxx>, Takashi Iwai <tiwai@xxxxxxxx>
- Subject: [PATCH 0/4] Add support for IIO devices in ASoC
- From: Herve Codina <herve.codina@xxxxxxxxxxx>
- Date: Fri, 21 Apr 2023 14:41:18 +0200
- Cc: alsa-devel@xxxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-iio@xxxxxxxxxxxxxxx, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>
Several weeks ago, I sent a series [1] for adding a potentiometer as an auxiliary device in ASoC. The feedback was that the potentiometer should be directly handled in IIO (as other potentiometers) and something more generic should be present in ASoC in order to have a binding to import some IIO devices into sound cards. The series related to the IIO potentiometer device is already under review [2]. This series introduces simple-iio-aux. Its goal is to offer the binding between IIO and ASoC. It exposes attached IIO devices as ASoC auxiliary devices and allows to control them through mixer controls. On my system, the IIO device is a potentiometer and it is present in an amplifier design present in the audio path. Best regards, Hervé [1] https://lore.kernel.org/linux-kernel/20230203111422.142479-1-herve.codina@xxxxxxxxxxx/ [2] https://lore.kernel.org/linux-kernel/20230421085245.302169-1-herve.codina@xxxxxxxxxxx/ Herve Codina (4): dt-bindings: sound: Add simple-iio-aux iio: inkern: Add a helper to query an available minimum raw value ASoC: soc-dapm.h: Add a helper to build a DAPM widget dynamically ASoC: codecs: Add support for the generic IIO auxiliary devices .../bindings/sound/simple-iio-aux.yaml | 65 ++++ drivers/iio/inkern.c | 67 ++++ include/linux/iio/consumer.h | 11 + include/sound/soc-dapm.h | 12 +- sound/soc/codecs/Kconfig | 12 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/simple-iio-aux.c | 307 ++++++++++++++++++ 7 files changed, 475 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/sound/simple-iio-aux.yaml create mode 100644 sound/soc/codecs/simple-iio-aux.c -- 2.39.2
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