linux-kernel - Re: [PATCH v14 04/19] leds: multicolor: Introduce a multicolor class definition

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Date:   Fri, 18 Oct 2019 23:44:54 +0200
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Dan Murphy <dmurphy@...com>, pavel@....cz
Cc:     linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v14 04/19] leds: multicolor: Introduce a multicolor class
 definition

Dan,

Thank you for the update.

On 10/18/19 2:25 PM, Dan Murphy wrote:
> Introduce a multicolor class that groups colored LEDs
> within a LED node.
> 
> The multi color class groups monochrome LEDs and allows controlling two
> aspects of the final combined color: hue and lightness. The former is
> controlled via <color>_intensity files and the latter is controlled
> via brightness file.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>
> ---
>  .../ABI/testing/sysfs-class-led-multicolor    |  36 +++
>  Documentation/leds/index.rst                  |   1 +
>  Documentation/leds/leds-class-multicolor.rst  | 100 +++++++
>  drivers/leds/Kconfig                          |  10 +
>  drivers/leds/Makefile                         |   1 +
>  drivers/leds/led-class-multicolor.c           | 271 ++++++++++++++++++
>  include/linux/led-class-multicolor.h          |  97 +++++++
>  7 files changed, 516 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-class-led-multicolor
>  create mode 100644 Documentation/leds/leds-class-multicolor.rst
>  create mode 100644 drivers/leds/led-class-multicolor.c
>  create mode 100644 include/linux/led-class-multicolor.h
[...]
>  # LED Platform Drivers
> diff --git a/drivers/leds/led-class-multicolor.c b/drivers/leds/led-class-multicolor.c
> new file mode 100644
> index 000000000000..453fd8e913e9
> --- /dev/null
> +++ b/drivers/leds/led-class-multicolor.c
> @@ -0,0 +1,271 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// LED Multi Color class interface
> +// Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
> +
> +#include <linux/device.h>
> +#include <linux/init.h>
> +#include <linux/led-class-multicolor.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/uaccess.h>
> +
> +#include "leds.h"
> +
> +#define INTENSITY_NAME		"_intensity"
> +#define MAX_INTENSITY_NAME	"_max_intensity"
> +
> +int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
> +				 enum led_brightness brightness,
> +			       struct led_mc_color_conversion color_component[])
> +{
> +	struct led_mc_color_entry *priv;
> +	int i = 0;
> +
> +	list_for_each_entry(priv, &mcled_cdev->color_list, list) {
> +		color_component[i].color_id = priv->led_color_id;
> +		color_component[i].brightness = brightness *
> +					  priv->intensity / priv->max_intensity;
> +		i++;
> +	}

For lines in the function above:

s/component/components/

> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(led_mc_calc_color_components);


-- 
Best regards,
Jacek Anaszewski