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 <[email protected]>
---
.../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 <[email protected]>
+
+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>;
+ };
--
2.40.1
On Thu, 15 Jun 2023 17:26:19 +0200
Herve Codina <[email protected]> wrote:
> 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 <[email protected]>
LGTM
Reviewed-by: Jonathan Cameron <[email protected]>
> ---
> .../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 <[email protected]>
> +
> +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>;
> + };
On Thu, 15 Jun 2023 17:26:19 +0200, Herve Codina wrote:
> 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 <[email protected]>
> ---
> .../bindings/sound/audio-iio-aux.yaml | 64 +++++++++++++++++++
> 1 file changed, 64 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/audio-iio-aux.yaml
>
Reviewed-by: Rob Herring <[email protected]>