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Message-Id: <20200907204045.95530-2-sebastian.reichel@collabora.com>
Date: Mon, 7 Sep 2020 22:40:42 +0200
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Mylène Josserand
<mylene.josserand@...labora.com>, Rob Herring <robh+dt@...nel.org>
Cc: linux-input@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel@...labora.com,
Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: [PATCHv2 1/4] dt-bindings: input: Convert rotary-encoder bindings to schema
Convert rotary-encoder bindings to YAML schema.
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
.../bindings/input/rotary-encoder.txt | 50 ---------
.../bindings/input/rotary-encoder.yaml | 100 ++++++++++++++++++
2 files changed, 100 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 a644408b33b8..000000000000
--- 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 000000000000..5b60ea86bd62
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/rotary-encoder.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0 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: Generic Rotary Encoder
+
+maintainers:
+ - Dmitry Torokhov <dmitry.torokhov@...il.com>
+
+description:
+ See Documentation/input/devices/rotary-encoder.rst for more information.
+
+properties:
+ compatible:
+ const: rotary-encoder
+
+ gpios:
+ minItems: 2
+ description: GPIOs for the rotation signals, most significant first
+
+ linux,axis:
+ description:
+ The input subsystem axis to map to this rotary encoder.
+ Defaults to (ABS_X / REL_X).
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0
+
+ rotary-encoder,rollover:
+ description:
+ Automatic rollover when the rotary value becomes greater than the
+ specified steps or smaller than 0. For absolute axis only.
+ type: boolean
+
+ rotary-encoder,steps-per-period:
+ description: The values have the following meaning
+ 1 - Full-period mode
+ 2 - Half-period mode
+ 4 - Quarter-period mode
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4]
+ default: 1
+
+ wakeup-source:
+ description: Rotary encoder can wake up the system.
+ type: boolean
+
+ rotary-encoder,encoding:
+ description:
+ Method used to encode steps. Gray code is more common.
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: ["gray", "binary"]
+ default: "gray"
+
+ rotary-encoder,half-period:
+ description:
+ Deprecated, use "rotary-encoder,steps-per-period = <2>" instead.
+ type: boolean
+ deprecated: True
+
+ rotary-encoder,steps:
+ 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.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 24
+
+ rotary-encoder,relative-axis:
+ 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.
+ type: boolean
+
+required:
+ - compatible
+ - gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include "dt-bindings/gpio/gpio.h"
+ #include "dt-bindings/input/input.h"
+ rotary-encoder0 {
+ compatible = "rotary-encoder";
+ gpios = <&gpio 19 GPIO_ACTIVE_LOW>, <&gpio 20 GPIO_ACTIVE_HIGH>;
+ linux,axis = <REL_X>;
+ rotary-encoder,encoding = "gray";
+ rotary-encoder,relative-axis;
+ };
+ rotary-encoder1 {
+ compatible = "rotary-encoder";
+ gpios = <&gpio 21 GPIO_ACTIVE_HIGH>, <&gpio 22 GPIO_ACTIVE_HIGH>;
+ linux,axis = <ABS_Y>;
+ rotary-encoder,encoding = "binary";
+ rotary-encoder,rollover;
+ };
--
2.28.0
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