This adds device tree bindings for the Hycon HY46XX touchscreen series. Signed-off-by: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx> --- V1->V2: As suggested by Rob Herring: * fixed $id: address * added "hycon," in front of every custom property * changed all possible property to boolean type * removed proximity-sensor-switch property since it's not handled in driver V2->V3: As suggested by Jonathan Neuschäfer: * fixed some typo * fixed description indentation * improved boolean properties descriptions * improved hycon,report-speed description V3->V4: * fixed binding compatible string in example as suggested by Jonathan Neuschäfer V4->V5: As suggested by Rob Herring: * drop hycon- prefix from compatible * use Hertz unit suffix for hycon,report-speed instead of u32 * set hycon,report-speed minimum to 1Hz, 0Hz make controller to do nothing * change hycon,power-noise-enable property name to hycon,noise-filter-enable * improve hycon,filter-data property description * use generic touchscreen node name in example V5->V6: * changed report-speed property name into report-speed-hz according to Rob Herring's suggestion --- .../input/touchscreen/hycon,hy46xx.yaml | 119 ++++++++++++++++++ MAINTAINERS | 6 + 2 files changed, 125 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml diff --git a/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml b/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml new file mode 100644 index 000000000000..942562f1e45b --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml @@ -0,0 +1,119 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/hycon,hy46xx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Hycon HY46XX series touchscreen controller bindings + +description: | + There are 6 variants of the chip for various touch panel sizes and cover lens material + Glass: 0.3mm--4.0mm + PET/PMMA: 0.2mm--2.0mm + HY4613(B)-N048 < 6" + HY4614(B)-N068 7" .. 10.1" + HY4621-NS32 < 5" + HY4623-NS48 5.1" .. 7" + Glass: 0.3mm--8.0mm + PET/PMMA: 0.2mm--4.0mm + HY4633(B)-N048 < 6" + HY4635(B)-N048 < 7" .. 10.1" + +maintainers: + - Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx> + +allOf: + - $ref: touchscreen.yaml# + +properties: + compatible: + enum: + - hycon,hy4613 + - hycon,hy4614 + - hycon,hy4621 + - hycon,hy4623 + - hycon,hy4633 + - hycon,hy4635 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + vcc-supply: true + + hycon,threshold: + description: Allows setting the sensitivity in the range from 0 to 255. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 255 + + hycon,glove-enable: + type: boolean + description: Allows enabling glove setting. + + hycon,report-speed-hz: + description: Allows setting the report speed in Hertz. + minimum: 1 + maximum: 255 + + hycon,noise-filter-enable: + type: boolean + description: Allows enabling power noise filter. + + hycon,filter-data: + description: Allows setting how many samples throw before reporting touch + in the range from 0 to 5. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 5 + + hycon,gain: + description: Allows setting the sensitivity distance in the range from 0 to 5. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 5 + + hycon,edge-offset: + description: Allows setting the edge compensation in the range from 0 to 16. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 16 + + 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 + interrupt-controller: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + touchscreen@1c { + compatible = "hycon,hy4633"; + reg = <0x1c>; + interrupt-parent = <&gpio2>; + interrupts = <5 IRQ_TYPE_EDGE_FALLING>; + reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 7fdc513392f4..18a50942c019 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8250,6 +8250,12 @@ S: Maintained F: mm/hwpoison-inject.c F: mm/memory-failure.c +HYCON HY46XX TOUCHSCREEN SUPPORT +M: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx> +L: linux-input@xxxxxxxxxxxxxxx +S: Maintained +F: Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml + HYGON PROCESSOR SUPPORT M: Pu Wen <puwen@xxxxxxxx> L: linux-kernel@xxxxxxxxxxxxxxx -- 2.25.1
