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SubjectRe: [PATCH v25 01/16] dt: bindings: Add multicolor class dt bindings documention
On Tue, May 26, 2020 at 11:46:37AM -0500, Dan Murphy wrote:
> Add DT bindings for the LEDs multicolor class framework.
> Add multicolor ID to the color ID list for device tree bindings.
>
> CC: Rob Herring <robh@kernel.org>
> Acked-by: Pavel Machek <pavel@ucw.cz>
> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
> .../bindings/leds/leds-class-multicolor.yaml | 71 +++++++++++++++++++
> drivers/leds/led-core.c | 1 +
> include/dt-bindings/leds/common.h | 3 +-
> 3 files changed, 74 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
>
> diff --git a/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml b/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
> new file mode 100644
> index 000000000000..fa6ea8e5c46b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-class-multicolor.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: GPL-2.0

Dual license new bindings please.

GPL-2.0-only OR BSD-2-Clause

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/leds-class-multicolor.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Common properties for the multicolor LED class.
> +
> +maintainers:
> + - Dan Murphy <dmurphy@ti.com>
> +
> +description: |
> + Bindings for multi color LEDs show how to describe current outputs of
> + either integrated multi-color LED elements (like RGB, RGBW, RGBWA-UV
> + etc.) or standalone LEDs, to achieve logically grouped multi-color LED
> + modules. This is achieved by adding multi-led nodes layer to the
> + monochrome LED bindings.
> + The nodes and properties defined in this document are unique to the multicolor
> + LED class. Common LED nodes and properties are inherited from the common.txt
> + within this documentation directory.
> +
> +properties:
> + color:
> + description: |
> + For multicolor LED support this property should be defined as
> + LED_COLOR_ID_MULTI and further definition can be found in
> + include/linux/leds/common.h.

This should have:

const: X # LED_COLOR_ID_MULTI

It can't use the define, so you have to use the value.

> +
> +required:
> + - color
> +
> +examples:
> + - |
> + #include <dt-bindings/leds/common.h>
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + led-controller@14 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "ti,lp5009";
> + reg = <0x14>;
> +
> + multi-led@1 {

Define $nodename must be 'multi-led(@[0-9a-f]+)?'

> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <1>;
> + color = <LED_COLOR_ID_MULTI>;
> + function = LED_FUNCTION_CHARGING;
> +
> + led@0 {

Then the schema should define child nodes named 'led'.

> + reg = <0>;
> + color = <LED_COLOR_ID_RED>;

I assume in this case 'reg' and 'color' need to be defined as required?

> + };
> +
> + led@1 {
> + reg = <1>;
> + color = <LED_COLOR_ID_GREEN>;
> + };
> +
> + led@2 {
> + reg = <2>;
> + color = <LED_COLOR_ID_BLUE>;
> + };
> + };
> + };
> + };
> +
> +additionalProperties: false
> +...
> diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c

This isn't a binding file. Belongs in another patch.

> index f1f718dbe0f8..846248a0693d 100644
> --- a/drivers/leds/led-core.c
> +++ b/drivers/leds/led-core.c
> @@ -34,6 +34,7 @@ const char * const led_colors[LED_COLOR_ID_MAX] = {
> [LED_COLOR_ID_VIOLET] = "violet",
> [LED_COLOR_ID_YELLOW] = "yellow",
> [LED_COLOR_ID_IR] = "ir",
> + [LED_COLOR_ID_MULTI] = "multicolor",
> };
> EXPORT_SYMBOL_GPL(led_colors);
>
> diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h
> index 0ce7dfc00dcb..a463ce6a8794 100644
> --- a/include/dt-bindings/leds/common.h
> +++ b/include/dt-bindings/leds/common.h
> @@ -30,7 +30,8 @@
> #define LED_COLOR_ID_VIOLET 5
> #define LED_COLOR_ID_YELLOW 6
> #define LED_COLOR_ID_IR 7
> -#define LED_COLOR_ID_MAX 8
> +#define LED_COLOR_ID_MULTI 8
> +#define LED_COLOR_ID_MAX 9
>
> /* Standard LED functions */
> /* Keyboard LEDs, usually it would be input4::capslock etc. */
> --
> 2.25.1
>

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