linux-kernel - [PATCH v9 2/4] dt-bindings: input: Add Cypress TT2100 touchscreen controller

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221024111017.43859-3-alistair@alistair23.me>
Date:   Mon, 24 Oct 2022 21:10:15 +1000
From:   Alistair Francis <alistair@...stair23.me>
To:     linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     linus.walleij@...aro.org, s.hauer@...gutronix.de,
        robh+dt@...nel.org, andreas@...nade.info,
        krzysztof.kozlowski+dt@...aro.org, alistair23@...il.com,
        dmitry.torokhov@...il.com, rydberg@...math.org,
        shawnguo@...nel.org, Alistair Francis <alistair@...stair23.me>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v9 2/4] dt-bindings: input: Add Cypress TT2100 touchscreen controller

Add the Cypress TrueTouch Generation 5 touchscreen device tree bindings
documentation. It can use I2C or SPI bus.
This touchscreen can handle some defined zone that are designed and
sent as button. To be able to customize the keycode sent, the
"linux,code" property in a "button" sub-node can be used.

Signed-off-by: Alistair Francis <alistair@...stair23.me>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../input/touchscreen/cypress,tt21000.yaml    | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
new file mode 100644
index 000000000000..0913b585af5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/cypress,tt21000.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress TT2100 touchscreen controller
+
+description: The Cypress TT2100 series (also known as "CYTTSP5" after
+  the marketing name Cypress TrueTouch Standard Product series 5).
+
+maintainers:
+  - Alistair Francis <alistair@...stair23.me>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    const: cypress,tt21000
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply:
+    description: Regulator for voltage.
+
+  reset-gpios:
+    maxItems: 1
+
+  linux,keycodes:
+    description: EV_ABS specific event code generated by the axis.
+
+patternProperties:
+  "^button@[0-9]+$":
+    type: object
+    $ref: input.yaml#
+    properties:
+      reg:
+        maxItems: 1
+      linux,keycodes:
+        description: Keycode to emit
+
+    required:
+      - reg
+      - linux,keycodes
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - vdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/input/linux-event-codes.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@24 {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            compatible = "cypress,tt21000";
+            reg = <0x24>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&tp_reset_ds203>;
+            interrupt-parent = <&pio>;
+            interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>;
+            reset-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&reg_touch>;
+
+            button@0 {
+                reg = <0>;
+                linux,keycodes = <KEY_HOMEPAGE>;
+            };
+
+            button@1 {
+                reg = <1>;
+                linux,keycodes = <KEY_MENU>;
+            };
+
+            button@2 {
+                reg = <2>;
+                linux,keycodes = <KEY_BACK>;
+            };
+        };
+    };
+...
-- 
2.37.3