linux-kernel - Re: [PATCH v7 1/2] dt-bindings: input: document Qualcomm PMI8998 haptics driver

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Message-ID: <e588abdb-6817-25cf-dd9e-be23044e1e94@connolly.tech>
Date:   Tue, 18 Oct 2022 18:29:12 +0000
From:   Caleb Connolly <caleb@...nolly.tech>
To:     unlisted-recipients:; (no To-header on input)
Cc:     krzysztof.kozlowski@...aro.org, phone-devel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        devicetree@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jeff LaBundy <jeff@...undy.com>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Rob Herring <robh+dt@...nel.org>, Tom Rix <trix@...hat.com>
Subject: Re: [PATCH v7 1/2] dt-bindings: input: document Qualcomm PMI8998 haptics driver



On 15/10/2022 18:30, Caleb Connolly wrote:
> Add bindings for qcom PMIC PMI8998 haptics driver.
>
> Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
> ---
>   .../bindings/input/qcom,pmi8998-haptics.yaml  | 73 +++++++++++++++++++
>   1 file changed, 73 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/input/qcom,pmi8998-haptics.yaml
>
> diff --git a/Documentation/devicetree/bindings/input/qcom,pmi8998-haptics.yaml b/Documentation/devicetree/bindings/input/qcom,pmi8998-haptics.yaml
> new file mode 100644
> index 000000000000..d43324cceb89
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/qcom,pmi8998-haptics.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2020 Unisoc Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/qcom,pmi8998-haptics.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm PMI8998/PM660 Haptics
> +
> +maintainers:
> +  - Caleb Connolly <caleb@...nolly.tech>
> +
> +description: |
> +  Qualcomm SPMI haptics is a peripheral on some QTI PMICs. It supports linear resonant
> +  actuators and eccentric rotating mass type haptics commonly found in mobile devices.
> +  It supports multiple sources of wave data such as an internal buffer, direct play
> +  (from kernel or userspace) as well as an audio output mode.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - qcom,pmi8998-haptics
> +          - qcom,pm660-charger

I've just noticed this typo! Will respin and fix...

> +          - qcom,pmi8996-haptics
> +          - qcom,pmi8941-haptics
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 2
> +
> +  interrupt-names:
> +    items:
> +      - const: short
> +      - const: play
> +
> +  qcom,wave-play-duration-us:
> +    description: |
> +      Wave sample duration in microseconds, 1/f where f
> +      is the resonant frequency of the actuator.
> +      This property is named qcom,wave-play-rate-us in
> +      downstream kernels.
> +    minimum: 0
> +    maximum: 20475
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - qcom,wave-play-rate-us
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    spmi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      pmi8998_haptics: haptics@...0 {
> +        compatible = "qcom,pmi8998-haptics";
> +        reg = <0xc000>;
> +
> +        interrupts = <0x3 0xc0 0x0 IRQ_TYPE_EDGE_BOTH>,
> +                     <0x3 0xc0 0x1 IRQ_TYPE_EDGE_BOTH>;
> +        interrupt-names = "short", "play";
> +
> +        qcom,wave-play-rate-us = <4255>;
> +      };
> +    };
> --
> 2.38.0
>

--
Kind Regards,
Caleb