linux-kernel - [PATCH v2 0/4] Add a multicolor LED driver for groups of monochromatic LEDs

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Message-ID: <20220719191801.345773-1-jjhiblot@traphandler.com>
Date:   Tue, 19 Jul 2022 21:17:57 +0200
From:   Jean-Jacques Hiblot <jjhiblot@...phandler.com>
To:     <pavel@....cz>, <robh+dt@...nel.org>,
        <sven.schwermer@...ruptive-technologies.com>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <johan+linaro@...nel.org>, <marijn.suijten@...ainline.org>,
        <bjorn.andersson@...aro.org>, <andy.shevchenko@...il.com>,
        <linux-leds@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: [PATCH v2 0/4] Add a multicolor LED driver for groups of monochromatic LEDs

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 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  |  61 +++++++
 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, 235 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