On Tue, May 11, 2021 at 03:48:34PM -0500, Doug Zobel wrote:
> Add a new device tree object for LP5562 predfined led patterns.
If you are going to define something generic looking, put it in a
generic binding.
I don't know that this belongs in DT though. Won't a user want to create
their own patterns? That means there should be a sysfs interface (which
we either already have or has been attempted IIRC).
>
> Signed-off-by: Doug Zobel <dougdev334@xxxxxxxxx>
> ---
> .../devicetree/bindings/leds/leds-lp55xx.yaml | 103 +++++++++++++++++-
> 1 file changed, 102 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
> index f552cd143d5b..2524a84fe688 100644
> --- a/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
> +++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
> @@ -100,6 +100,31 @@ patternProperties:
> $ref: /schemas/types.yaml#/definitions/string
> description: name of channel
>
> + "(^pattern@[0-9a-f]$|pattern)":
> + type: object
> + $ref: common.yaml#
> + description: |
> + LP5562 sepcific object. LED pattern program saved to and run on LP5562.
> + properties:
> + pat-name:
> + $ref: /schemas/types.yaml#/definitions/string
> + description: Name of pattern program
> +
> + pat-r:
> + $ref: /schemas/types.yaml#/definitions/uint8-array
> + description: |
> + Program data for red channel. See LP5562 datasheet for program format specification.
> +
> + pat-g:
> + $ref: /schemas/types.yaml#/definitions/uint8-array
> + description: |
> + Program data for green channel. See LP5562 datasheet for program format specification.
> +
> + pat-b:
> + $ref: /schemas/types.yaml#/definitions/uint8-array
> + description: |
> + Program data for blue channel. See LP5562 datasheet for program format specification.
> +
> required:
> - compatible
> - reg
> @@ -223,6 +248,82 @@ examples:
> };
> };
> };
> - };
>
> + led-controller@30 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "ti,lp5562";
> + reg = <0x30>;
> +
> + led@0 {
> + reg = <0>;
> + chan-name = "red";
> + color = <LED_COLOR_ID_RED>;
> + };
> +
> + led@1 {
> + reg = <1>;
> + chan-name = "green";
> + color = <LED_COLOR_ID_GREEN>;
> + };
> +
> + led@2 {
> + reg = <2>;
> + chan-name = "blue";
> + color = <LED_COLOR_ID_BLUE>;
> + };
> +
> + pattern@1 {
> + /* Pulsing blue pattern
> + * Blue:
> + * 027F: Ramp up 50%
> + * 027F: Ramp up 50%
> + * 4600: Wait 100ms
> + * 02FF: Ramp down 50%
> + * 02FF: Ramp down 50%
> + * 4600: Wait 100ms
> + * 0000: Goto start
> + */
> + pat-name = "Pulsing Blue";
> + pat-b = [02 7f 02 7f 46 00 02 ff 02 ff 46 00 00 00];
> + };
> +
> + pattern@2 {
> + /*
> + * HSV rainbow
> + * Red:
> + * 40FF: Set PWM 255
> + * 41FF: Ramp down 50%
> + * 41FF: Ramp down 50%
> + * 41FF: Wait 1/2 ramp time
> + * 41FF: Wait 1/2 ramp time
> + * 417F: Ramp up 50%
> + * 417F: Ramp up 50%
> + * 0000: Goto start
> + * Green:
> + * 4000: Set PWM 0
> + * 417F: Ramp up 50%
> + * 417F: Ramp up 50%
> + * 41FF: Ramp down 50%
> + * 41FF: Ramp down 50%
> + * 41FF: Wait 1/2 ramp time
> + * 41FF: Wait 1/2 ramp time
> + * 0000: Goto start
> + * Blue:
> + * 4000: Set PWM 0
> + * 41FF: Wait 1/2 ramp time
> + * 41FF: Wait 1/2 ramp time
> + * 417F: Ramp up 50%
> + * 417F: Ramp up 50%
> + * 41FF: Ramp down 50%
> + * 41FF: Ramp down 50%
> + * 0000: Goto start
> + */
> + pat-name = "HSV Rainbow";
> + pat-r = [40 ff 41 FF 41 FF 41 FF 41 FF 41 7F 41 7F 00 00];
> + pat-g = [40 00 41 7F 41 7F 41 FF 41 FF 41 FF 41 FF 00 00];
> + pat-b = [40 00 41 FF 41 FF 41 7F 41 7F 41 FF 41 FF 00 00];
> + };
> + };
> + };
> ...
> --
> 2.20.1
>
