[PATCH v2 1/4] dt-bindings: touchscreen: Convert resistive-adc-touch binding to json schema

From: Oleksij Rempel
Date: Tue May 18 2021 - 08:59:34 EST


Convert the resistive-adc-touch binding to DT schema format using json-schema.

Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
.../input/touchscreen/resistive-adc-touch.txt | 33 ----------
.../touchscreen/resistive-adc-touch.yaml | 61 +++++++++++++++++++
2 files changed, 61 insertions(+), 33 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt
create mode 100644 Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt
deleted file mode 100644
index af5223bb5bdd..000000000000
--- a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-Generic resistive touchscreen ADC
-
-Required properties:
-
- - compatible: must be "resistive-adc-touch"
-The device must be connected to an ADC device that provides channels for
-position measurement and optional pressure.
-Refer to
-https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/iio-consumer.yaml
-for details
-
- - iio-channels: must have at least two channels connected to an ADC device.
-These should correspond to the channels exposed by the ADC device and should
-have the right index as the ADC device registers them. These channels
-represent the relative position on the "x" and "y" axes.
- - iio-channel-names: must have all the channels' names. Mandatory channels
-are "x" and "y".
-
-Optional properties:
- - iio-channels: The third channel named "pressure" is optional and can be
-used if the ADC device also measures pressure besides position.
-If this channel is missing, pressure will be ignored and the touchscreen
-will only report position.
- - iio-channel-names: optional channel named "pressure".
-
-Example:
-
- resistive_touch: resistive_touch {
- compatible = "resistive-adc-touch";
- touchscreen-min-pressure = <50000>;
- io-channels = <&adc 24>, <&adc 25>, <&adc 26>;
- io-channel-names = "x", "y", "pressure";
- };
diff --git a/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml
new file mode 100644
index 000000000000..53df21a6589e
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/resistive-adc-touch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic resistive touchscreen ADC
+
+maintainers:
+ - Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
+
+description: |
+ Generic ADC based resistive touchscreen controller
+ The device must be connected to an ADC device that provides channels for
+ position measurement and optional pressure.
+
+allOf:
+ - $ref: touchscreen.yaml#
+
+properties:
+ compatible:
+ const: resistive-adc-touch
+
+ io-channels:
+ minItems: 2
+ maxItems: 3
+ items:
+ - description: x
+ - description: y
+ - description: pressure (optional)
+
+ io-channel-names:
+ items:
+ - const: x
+ - const: y
+ - const: pressure
+
+ touchscreen-size-x: true
+ touchscreen-size-y: true
+ touchscreen-fuzz-x: true
+ touchscreen-fuzz-y: true
+ touchscreen-inverted-x: true
+ touchscreen-inverted-y: true
+ touchscreen-swapped-x-y: true
+ touchscreen-min-pressure: true
+
+additionalProperties: false
+
+required:
+ - compatible
+ - io-channels
+ - io-channel-names
+
+examples:
+ - |
+ resistive_touch {
+ compatible = "resistive-adc-touch";
+ touchscreen-min-pressure = <50000>;
+ io-channels = <&adc 24>, <&adc 25>, <&adc 26>;
+ io-channel-names = "x", "y", "pressure";
+ };
--
2.29.2