linux-kernel - Re: [RESEND PATCH v3 0/4] Add a multicolor LED driver for groups of monochromatic LEDs

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Date:   Sat, 17 Sep 2022 11:25:05 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Cc:     pavel@....cz, robh+dt@...nel.org,
        sven.schwermer@...ruptive-technologies.com,
        krzysztof.kozlowski+dt@...aro.org, johan+linaro@...nel.org,
        marijn.suijten@...ainline.org, bjorn.andersson@...aro.org,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, sha@...gutronix.de
Subject: Re: [RESEND PATCH v3 0/4] Add a multicolor LED driver for groups of
 monochromatic LEDs

On Sat, Sep 17, 2022 at 11:14 AM Jean-Jacques Hiblot
<jjhiblot@...phandler.com> wrote:
>
> Hi,
>
> Resending this series with only a minor modification in the binding
> example after the comments from Sascha Hauer.

I would suggest to Cc a new version (if required a new version) to
Lee. It was a discussion about advancing the LED subsystem patch queue
with his help.

> Original v3 message:
>
> Some HW design implement multicolor LEDs with several monochromatic LEDs.
> Grouping the monochromatic LEDs allows to configure them in sync and use
> the triggers.
> The PWM multicolor LED driver implements such grouping but only for
> PWM-based LEDs. As this feature is also desirable for the other types of
> LEDs, this series implements it for any kind of LED device.
>
> changes v2->v3, only minor changes:
>  - rephrased the Kconfig descritpion
>  - make the sysfs interface of underlying LEDs read-only only if the probe
>    is successful.
>  - sanitize the header files
>  - removed the useless call to dev_set_drvdata()
>  - use dev_fwnode() to get the fwnode to the device.
>
> changes v1->v2:
>  - Followed Rob Herrings's suggestion to make the dt binding much simpler.
>  - Added a patch to store the color property of a LED in its class
>    structure (struct led_classdev).
>
> Jean-Jacques Hiblot (4):
>   leds: class: simplify the implementation of devm_of_led_get()
>   leds: class: store the color index in struct led_classdev
>   dt-bindings: leds: Add binding for a multicolor group of LEDs
>   leds: Add a multicolor LED driver to group monochromatic LEDs
>
>  .../bindings/leds/leds-group-multicolor.yaml  |  64 ++++++++
>  drivers/leds/led-class.c                      |  27 ++--
>  drivers/leds/rgb/Kconfig                      |   6 +
>  drivers/leds/rgb/Makefile                     |   1 +
>  drivers/leds/rgb/leds-group-multicolor.c      | 153 ++++++++++++++++++
>  include/linux/leds.h                          |   1 +
>  6 files changed, 238 insertions(+), 14 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml
>  create mode 100644 drivers/leds/rgb/leds-group-multicolor.c
>
> --
> 2.25.1
>


-- 
With Best Regards,
Andy Shevchenko