Re: [PATCH v6 01/13] ASoC: dt-bindings: Add audio-iio-aux

Le 23/06/2023 à 10:58, Herve Codina a écrit :

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.

audio-iio-aux allows to consider these Industrial I/O devices as auxliary audio devices.

Signed-off-by: Herve Codina herve.codina@bootlin.com Reviewed-by: Jonathan Cameron Jonathan.Cameron@huawei.com Reviewed-by: Rob Herring robh@kernel.org

Reviewed-by: Christophe Leroy christophe.leroy@csgroup.eu

---

.../bindings/sound/audio-iio-aux.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/audio-iio-aux.yaml

diff --git a/Documentation/devicetree/bindings/sound/audio-iio-aux.yaml b/Documentation/devicetree/bindings/sound/audio-iio-aux.yaml new file mode 100644 index 000000000000..d3cc1ea4a175 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/audio-iio-aux.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/audio-iio-aux.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#

+title: Audio IIO auxiliary

+maintainers:

• • Herve Codina herve.codina@bootlin.com

+description:

• Auxiliary device based on Industrial I/O device channels

+allOf:

• • $ref: dai-common.yaml#

+properties:

• compatible:
• const: audio-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.
  

• snd-control-invert-range:
• $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:

• • |
• iio-aux {

•    compatible = "audio-iio-aux";
  

•    io-channels = <&iio 0>, <&iio 1>, <&iio 2>, <&iio 3>;
  

•    io-channel-names = "CH0", "CH1", "CH2", "CH3";
  

•    /* Invert CH1 and CH2 */
  

•    snd-control-invert-range = <0 1 1 0>;
  

• };