[05/10] dt-bindings: input: adp5588-keys: add bindings

Add device tree bindings for the adp5588-keys driver.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
---
 .../bindings/input/adi,adp5588-keys.yaml      | 110 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 111 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml

On Fri, Jul 08, 2022 at 11:34:43AM +0200, Nuno Sá wrote:
> Add device tree bindings for the adp5588-keys driver.
> 
> Signed-off-by: Nuno Sá <nuno.sa@analog.com>
> ---
>  .../bindings/input/adi,adp5588-keys.yaml      | 110 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 111 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml b/Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml
> new file mode 100644
> index 000000000000..c079af8a063d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml
> @@ -0,0 +1,110 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/adi,adp5588-keys.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices ADP5588 Keypad Controller
> +
> +maintainers:
> +  - Nuno Sá <nuno.sa@analog.com>
> +
> +description: |
> +  Analog Devices Mobile I/O Expander and QWERTY Keypad Controller
> +  https://www.analog.com/media/en/technical-documentation/data-sheets/ADP5588.pdf
> +
> +allOf:
> +  - $ref: "/schemas/input/matrix-keymap.yaml#"
> +  - $ref: input.yaml#

Be consistent with paths and quotes. Don't need quotes. Use either full 
path or no path.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,adp5588-keys
> +      - adi,adp5587-keys

'-keys' is redundant. The device doesn't do anything else. IOW, it's not 
sub-block of an SoC.

> +
> +  reg:
> +    maxItems: 1
> +
> +  vcc-supply:
> +    description: Supply Voltage Input
> +
> +  reset-gpios:
> +    description:
> +      If specified, it will be asserted during driver probe. As the line is
> +      active low, it should be marked GPIO_ACTIVE_LOW.
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  gpio-controller:
> +    description:
> +      This property applies if either keypad,num-rows lower than 8 or
> +      keypad,num-columns lower than 10.
> +
> +  '#gpio-cells':
> +    const: 2
> +
> +  interrupt-controller:
> +    description:
> +      This property applies if either keypad,num-rows lower than 8 or
> +      keypad,num-columns lower than 10.
> +
> +  '#interrupt-cells':
> +    const: 2
> +
> +  adi,unlock-keys:
> +    description:
> +      Specifies a maximum of 2 keys that can be used to unlock the keypad.
> +      If this property is set, the keyboard will be locked and only unlocked
> +      after these keys are pressed. If only one key is set, a double click is
> +      needed to unlock the keypad.
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 1
> +    maxItems: 2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - keypad,num-rows
> +  - keypad,num-columns
> +  - linux,keymap
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/input/input.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +    i2c {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          adp5588@34 {
> +                  compatible = "adi,adp5588-keys";
> +                  reg = <0x34>;
> +
> +                  vcc-supply = <&vcc>;
> +                  interrupts = <21 IRQ_TYPE_EDGE_FALLING>;
> +                  interrupt-parent = <&gpio>;
> +                  reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
> +
> +                  keypad,num-rows = <1>;
> +                  keypad,num-columns = <9>;
> +                  linux,keymap = <
> +                        MATRIX_KEY(0x00, 0x00, KEY_1)
> +                        MATRIX_KEY(0x00, 0x01, KEY_2)
> +                        MATRIX_KEY(0x00, 0x02, KEY_3)
> +                        MATRIX_KEY(0x00, 0x03, KEY_4)
> +                        MATRIX_KEY(0x00, 0x04, KEY_5)
> +                        MATRIX_KEY(0x00, 0x05, KEY_6)
> +                        MATRIX_KEY(0x00, 0x06, KEY_7)
> +                        MATRIX_KEY(0x00, 0x07, KEY_8)
> +                        MATRIX_KEY(0x00, 0x08, KEY_9)
> +                 >;
> +          };
> +    };
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 41037cfd75fe..f9c09f0ed0d4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -548,6 +548,7 @@ M:	Michael Hennerich <michael.hennerich@analog.com>
>  S:	Supported
>  W:	http://wiki.analog.com/ADP5588
>  W:	https://ez.analog.com/linux-software-drivers
> +F:	Documentation/devicetree/bindings/input/adi,adp5588-keys.yaml
>  F:	drivers/input/keyboard/adp5588-keys.c
>  
>  ADP8860 BACKLIGHT DRIVER (ADP8860/ADP8861/ADP8863)
> -- 
> 2.37.0
> 
>