mbox series

[v3,0/4] Add a multicolor LED driver for groups of monochromatic LEDs

Message ID 20220824103032.163451-1-jjhiblot@traphandler.com
Headers show
Series Add a multicolor LED driver for groups of monochromatic LEDs | expand

Message

Jean-Jacques Hiblot Aug. 24, 2022, 10:30 a.m. UTC 
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.

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