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Message-Id: <20240811214656.3773098-1-Frank.Li@nxp.com>
Date: Sun, 11 Aug 2024 17:46:55 -0400
From: Frank Li <Frank.Li@....com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
linux-input@...r.kernel.org (open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)...),
devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH 1/1] dt-bindings: input: convert rotary-encoder to yaml
Convert binding doc rotary-encoder.txt to yaml format.
Additional change:
- Only keep one example.
Fix below warning:
arch/arm64/boot/dts/freescale/imx8mn-dimonoff-gateway-evk.dtb: /rotary-encoder:
failed to match any schema with compatible: ['rotary-encoder']
Signed-off-by: Frank Li <Frank.Li@....com>
---
.../bindings/input/rotary-encoder.txt | 50 -----------
.../bindings/input/rotary-encoder.yaml | 90 +++++++++++++++++++
2 files changed, 90 insertions(+), 50 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/input/rotary-encoder.txt
create mode 100644 Documentation/devicetree/bindings/input/rotary-encoder.yaml
diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.txt b/Documentation/devicetree/bindings/input/rotary-encoder.txt
deleted file mode 100644
index a644408b33b8f..0000000000000
--- a/Documentation/devicetree/bindings/input/rotary-encoder.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-Rotary encoder DT bindings
-
-Required properties:
-- gpios: a spec for at least two GPIOs to be used, most significant first
-
-Optional properties:
-- linux,axis: the input subsystem axis to map to this rotary encoder.
- Defaults to 0 (ABS_X / REL_X)
-- rotary-encoder,steps: Number of steps in a full turnaround of the
- encoder. Only relevant for absolute axis. Defaults to 24 which is a
- typical value for such devices.
-- rotary-encoder,relative-axis: register a relative axis rather than an
- absolute one. Relative axis will only generate +1/-1 events on the input
- device, hence no steps need to be passed.
-- rotary-encoder,rollover: Automatic rollover when the rotary value becomes
- greater than the specified steps or smaller than 0. For absolute axis only.
-- rotary-encoder,steps-per-period: Number of steps (stable states) per period.
- The values have the following meaning:
- 1: Full-period mode (default)
- 2: Half-period mode
- 4: Quarter-period mode
-- wakeup-source: Boolean, rotary encoder can wake up the system.
-- rotary-encoder,encoding: String, the method used to encode steps.
- Supported are "gray" (the default and more common) and "binary".
-
-Deprecated properties:
-- rotary-encoder,half-period: Makes the driver work on half-period mode.
- This property is deprecated. Instead, a 'steps-per-period ' value should
- be used, such as "rotary-encoder,steps-per-period = <2>".
-
-See Documentation/input/devices/rotary-encoder.rst for more information.
-
-Example:
-
- rotary@0 {
- compatible = "rotary-encoder";
- gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
- linux,axis = <0>; /* REL_X */
- rotary-encoder,encoding = "gray";
- rotary-encoder,relative-axis;
- };
-
- rotary@1 {
- compatible = "rotary-encoder";
- gpios = <&gpio 21 0>, <&gpio 22 0>;
- linux,axis = <1>; /* ABS_Y */
- rotary-encoder,steps = <24>;
- rotary-encoder,encoding = "binary";
- rotary-encoder,rollover;
- };
diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.yaml b/Documentation/devicetree/bindings/input/rotary-encoder.yaml
new file mode 100644
index 0000000000000..e315aab7f584f
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/rotary-encoder.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/rotary-encoder.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rotary encoder
+
+maintainers:
+ - Frank Li <Frank.Li@....com>
+
+description:
+ See Documentation/input/devices/rotary-encoder.rst for more information.
+
+properties:
+ compatible:
+ const: rotary-encoder
+
+ gpios:
+ minItems: 2
+
+ linux,axis:
+ default: 0
+ description:
+ the input subsystem axis to map to this rotary encoder.
+ Defaults to 0 (ABS_X / REL_X)
+
+ rotary-encoder,steps:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 24
+ description:
+ Number of steps in a full turnaround of the
+ encoder. Only relevant for absolute axis. Defaults to 24 which is a
+ typical value for such devices.
+
+ rotary-encoder,relative-axis:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ register a relative axis rather than an
+ absolute one. Relative axis will only generate +1/-1 events on the input
+ device, hence no steps need to be passed.
+
+ rotary-encoder,rollover:
+ $ref: /schemas/types.yaml#/definitions/int32
+ description:
+ Automatic rollover when the rotary value becomes
+ greater than the specified steps or smaller than 0. For absolute axis only.
+
+ rotary-encoder,steps-per-period:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 1
+ enum: [1, 2, 4]
+ description: |
+ Number of steps (stable states) per period.
+ The values have the following meaning:
+ 1: Full-period mode (default)
+ 2: Half-period mode
+ 4: Quarter-period mode
+
+ wakeup-source: true
+
+ rotary-encoder,encoding:
+ $ref: /schemas/types.yaml#/definitions/string
+ description: the method used to encode steps.
+ enum: [gray, binary]
+
+ rotary-encoder,half-period:
+ $ref: /schemas/types.yaml#/definitions/flag
+ deprecated: true
+ description:
+ Makes the driver work on half-period mode.
+ This property is deprecated. Instead, a 'steps-per-period ' value should
+ be used, such as "rotary-encoder,steps-per-period = <2>".
+
+required:
+ - compatible
+ - gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ rotary {
+ compatible = "rotary-encoder";
+ gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
+ linux,axis = <0>; /* REL_X */
+ rotary-encoder,encoding = "gray";
+ rotary-encoder,relative-axis;
+ };
+
--
2.34.1
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