linux-kernel - Re: [PATCH v3] dt-bindings: input: Convert ti,drv260x to DT schema

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Date:   Mon, 7 Nov 2022 11:33:07 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Luca Weiss <luca@...tu.xyz>
Cc:     linux-input@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        phone-devel@...r.kernel.org, Andrew Davis <afd@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] dt-bindings: input: Convert ti,drv260x to DT schema

On Sat, Nov 05, 2022 at 03:17:06PM +0100, Luca Weiss wrote:
> Convert the drv260x haptics binding to DT schema format.
> 
> The only notable change from .txt format is that vbat-supply is not
> actually required, so don't make it a required property.
> 
> Acked-by: Andrew Davis <afd@...com>
> Signed-off-by: Luca Weiss <luca@...tu.xyz>
> ---
> Changes since v2:
> * add default values for vib-*-mv
> * add note about 'mode' property
> * add enable-gpios, deprecate enable-gpio
> 
>  .../devicetree/bindings/input/ti,drv260x.txt  |  50 --------
>  .../devicetree/bindings/input/ti,drv260x.yaml | 109 ++++++++++++++++++
>  2 files changed, 109 insertions(+), 50 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/input/ti,drv260x.txt
>  create mode 100644 Documentation/devicetree/bindings/input/ti,drv260x.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/ti,drv260x.txt b/Documentation/devicetree/bindings/input/ti,drv260x.txt
> deleted file mode 100644
> index 4c5312eaaa85..000000000000
> --- a/Documentation/devicetree/bindings/input/ti,drv260x.txt
> +++ /dev/null
> @@ -1,50 +0,0 @@
> -* Texas Instruments - drv260x Haptics driver family
> -
> -Required properties:
> -	- compatible - One of:
> -		"ti,drv2604" - DRV2604
> -		"ti,drv2605" - DRV2605
> -		"ti,drv2605l" - DRV2605L
> -	- reg -  I2C slave address
> -	- vbat-supply - Required supply regulator
> -	- mode - Power up mode of the chip (defined in include/dt-bindings/input/ti-drv260x.h)
> -		DRV260X_LRA_MODE - Linear Resonance Actuator mode (Piezoelectric)
> -		DRV260X_LRA_NO_CAL_MODE - This is a LRA Mode but there is no calibration
> -				sequence during init.  And the device is configured for real
> -				time playback mode (RTP mode).
> -		DRV260X_ERM_MODE - Eccentric Rotating Mass mode (Rotary vibrator)
> -	- library-sel - These are ROM based waveforms pre-programmed into the IC.
> -				This should be set to set the library to use at power up.
> -				(defined in include/dt-bindings/input/ti-drv260x.h)
> -		DRV260X_LIB_EMPTY - Do not use a pre-programmed library
> -		DRV260X_ERM_LIB_A - Pre-programmed Library
> -		DRV260X_ERM_LIB_B - Pre-programmed Library
> -		DRV260X_ERM_LIB_C - Pre-programmed Library
> -		DRV260X_ERM_LIB_D - Pre-programmed Library
> -		DRV260X_ERM_LIB_E - Pre-programmed Library
> -		DRV260X_ERM_LIB_F - Pre-programmed Library
> -		DRV260X_LIB_LRA - Pre-programmed LRA Library
> -
> -Optional properties:
> -	- enable-gpio - gpio pin to enable/disable the device.
> -	- vib-rated-mv - The rated voltage of the actuator in millivolts.
> -			  If this is not set then the value will be defaulted to
> -			  3.2 v.
> -	- vib-overdrive-mv - The overdrive voltage of the actuator in millivolts.
> -			  If this is not set then the value will be defaulted to
> -			  3.2 v.
> -Example:
> -
> -haptics: haptics@5a {
> -	compatible = "ti,drv2605l";
> -	reg = <0x5a>;
> -	vbat-supply = <&vbat>;
> -	enable-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> -	mode = <DRV260X_LRA_MODE>;
> -	library-sel = <DRV260X_LIB_LRA>;
> -	vib-rated-mv = <3200>;
> -	vib-overdrive-mv = <3200>;
> -}
> -
> -For more product information please see the link below:
> -http://www.ti.com/product/drv2605
> diff --git a/Documentation/devicetree/bindings/input/ti,drv260x.yaml b/Documentation/devicetree/bindings/input/ti,drv260x.yaml
> new file mode 100644
> index 000000000000..63230977043e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/ti,drv260x.yaml
> @@ -0,0 +1,109 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/ti,drv260x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments - drv260x Haptics driver family
> +
> +maintainers:
> +  - Andrew Davis <afd@...com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,drv2604
> +      - ti,drv2605
> +      - ti,drv2605l
> +
> +  reg:
> +    maxItems: 1
> +
> +  vbat-supply:
> +    description: Power supply to the haptic motor
> +
> +  # TODO: Deprecate 'mode' in favor of differently named property
> +  mode:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      Power up mode of the chip
> +      (defined in include/dt-bindings/input/ti-drv260x.h)
> +
> +      DRV260X_LRA_MODE
> +        Linear Resonance Actuator mode (Piezoelectric)
> +
> +      DRV260X_LRA_NO_CAL_MODE
> +        This is a LRA Mode but there is no calibration sequence during init.
> +        And the device is configured for real time playback mode (RTP mode).
> +
> +      DRV260X_ERM_MODE
> +        Eccentric Rotating Mass mode (Rotary vibrator)
> +    enum: [ 0, 1, 2 ]
> +
> +  library-sel:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      These are ROM based waveforms pre-programmed into the IC.
> +      This should be set to set the library to use at power up.
> +      (defined in include/dt-bindings/input/ti-drv260x.h)
> +
> +      DRV260X_LIB_EMPTY - Do not use a pre-programmed library
> +      DRV260X_ERM_LIB_A - Pre-programmed Library
> +      DRV260X_ERM_LIB_B - Pre-programmed Library
> +      DRV260X_ERM_LIB_C - Pre-programmed Library
> +      DRV260X_ERM_LIB_D - Pre-programmed Library
> +      DRV260X_ERM_LIB_E - Pre-programmed Library
> +      DRV260X_ERM_LIB_F - Pre-programmed Library
> +      DRV260X_LIB_LRA - Pre-programmed LRA Library
> +    enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ]
> +
> +  enable-gpio:
> +    maxItems: 1
> +    deprecated: true
> +
> +  enable-gpios:
> +    maxItems: 1
> +
> +  vib-rated-mv:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      The rated voltage of the actuator in millivolts.
> +      If this is not set then the value will be defaulted to 3200 mV.
> +    default: 3200
> +
> +  vib-overdrive-mv:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      The overdrive voltage of the actuator in millivolts.
> +      If this is not set then the value will be defaulted to 3200 mV.
> +    default: 3200
> +
> +required:
> +  - compatible
> +  - reg
> +  - enable-gpio

It is weird to have a deprecated property listed in required list and
also in the example...

> +  - mode
> +  - library-sel
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/input/ti-drv260x.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        haptics@5a {
> +            compatible = "ti,drv2605l";
> +            reg = <0x5a>;
> +            vbat-supply = <&vbat>;
> +            enable-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> +            mode = <DRV260X_LRA_MODE>;
> +            library-sel = <DRV260X_LIB_LRA>;
> +            vib-rated-mv = <3200>;
> +            vib-overdrive-mv = <3200>;
> +        };
> +    };
> -- 
> 2.38.1
> 

-- 
Dmitry