Industrial I/O devices can be present in the audio path. These devices needs to be viewed as audio components in order to be fully integrated in the audio path. simple-iio-aux allows to consider these Industrial I/O devices as auxliary audio devices. Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx> --- .../bindings/sound/simple-iio-aux.yaml | 65 +++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/simple-iio-aux.yaml diff --git a/Documentation/devicetree/bindings/sound/simple-iio-aux.yaml b/Documentation/devicetree/bindings/sound/simple-iio-aux.yaml new file mode 100644 index 000000000000..fab128fce4fc --- /dev/null +++ b/Documentation/devicetree/bindings/sound/simple-iio-aux.yaml @@ -0,0 +1,65 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/simple-iio-aux.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Simple IIO auxiliary + +maintainers: + - Herve Codina <herve.codina@xxxxxxxxxxx> + +description: | + Auxiliary device based on Industrial I/O device channels + +allOf: + - $ref: /schemas/iio/iio-consumer.yaml + - $ref: dai-common.yaml# + +properties: + compatible: + const: simple-iio-aux + + io-channels: + description: + Industrial I/O device channels used + + io-channel-names: + description: + Industrial I/O channel names related to io-channels. + These names are used to provides sound controls, widgets and routes names. + + invert: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + A list of 0/1 flags defining whether or not the related channel is + inverted + items: + enum: [0, 1] + default: 0 + description: | + Invert the sound control value compared to the IIO channel raw value. + - 1: The related sound control value is inverted meaning that the + minimum sound control value correspond to the maximum IIO channel + raw value and the maximum sound control value correspond to the + minimum IIO channel raw value. + - 0: The related sound control value is not inverted meaning that the + minimum (resp maximum) sound control value correspond to the + minimum (resp maximum) IIO channel raw value. + +required: + - compatible + - io-channels + - io-channel-names + +unevaluatedProperties: false + +examples: + - | + aux { + compatible = "simple-iio-aux"; + io-channels = <&iio 0>, <&iio 1>, <&iio 2>, <&iio 3>; + io-channel-names = "CH0", "CH1", "CH2", "CH3"; + /* Invert CH1 and CH2 */ + invert = <0 1 1>; + }; -- 2.39.2
