linux-kernel - Re: [PATCH 1/4] leds: Add Virtual Color LED Group driver

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Message-ID: <20251009151847.GC2890766@google.com>
Date: Thu, 9 Oct 2025 16:18:47 +0100
From: Lee Jones <lee@...nel.org>
To: Jonathan Brophy <professorjonny98@...il.com>
Cc: Pavel Machek <pavel@...nel.org>,
	Jonathan Brophy <professor_jonny@...mail.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Radoslav Tsvetkov <rtsvetkov@...dotech.eu>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-leds@...r.kernel.org
Subject: Re: [PATCH 1/4] leds: Add Virtual Color LED Group driver

On Thu, 09 Oct 2025, Jonathan Brophy wrote:

> From: Jonathan Brophy <professor_jonny@...mail.com>
> 
> This commit introduces a new driver that implements virtual LED groups
> by aggregating multiple monochromatic LEDs. The driver provides
> priority-based control to manage concurrent LED activation requests,
> ensuring that only the highest-priority LED group's state is active at
> any given time.
> 
> This driver is useful for systems that require coordinated control over
> multiple LEDs, such as RGB indicators or status LEDs that reflect
> complex system states.
> 
> Co-developed-by: Radoslav Tsvetkov <rtsvetkov@...dotech.eu>
> Signed-off-by: Jonathan Brophy <professor_jonny@...mail.com>
> ---
>  drivers/leds/rgb/Kconfig                   |  17 +
>  drivers/leds/rgb/Makefile                  |   1 +
>  drivers/leds/rgb/leds-group-virtualcolor.c | 440 +++++++++++++++++++++
>  3 files changed, 458 insertions(+)
>  create mode 100644 drivers/leds/rgb/leds-group-virtualcolor.c
> 
> diff --git a/drivers/leds/rgb/Kconfig b/drivers/leds/rgb/Kconfig
> index 222d943d826a..70a80fd46b9c 100644
> --- a/drivers/leds/rgb/Kconfig
> +++ b/drivers/leds/rgb/Kconfig
> @@ -75,4 +75,21 @@ config LEDS_MT6370_RGB
>  	  This driver can also be built as a module. If so, the module
>  	  will be called "leds-mt6370-rgb".
>  
> +config LEDS_GROUP_VIRTUALCOLOR
> +	tristate "Virtual LED Group Driver with Priority Control"
> +	depends on OF || COMPILE_TEST
> +	help
> +	  This option enables support for virtual LED groups that aggregate
> +	  multiple monochromatic LEDs with priority-based control. It allows
> +	  managing concurrent LED activation requests by ensuring only the
> +	  highest-priority LED state is active at any given time.

Grep for:

  "This driver groups several monochromatic LED devices in a single multicolor LED device."

Does this scratch your itch?  Is this something worth building on?

> +
> +	  Multiple LEDs can be grouped together and controlled as a single
> +	  virtual LED with priority levels and blinking support. This is
> +	  useful for systems that need to manage multiple LED indicators
> +	  with different priority levels.
> +
> +	  To compile this driver as a module, choose M here: the module
> +	  will be called leds-group-virtualcolor.

-- 
Lee Jones [李琼斯]