Skip to content

arm64: dts: imx8mq-librem5: use multicolor leds description for RGB led

Martin Kepplinger requested to merge martin.kepplinger/linux-next:multicolor_led into pureos/byzantium

the current interface is

ls /sys/class/leds/*status
'/sys/class/leds/blue:status':
brightness  device  max_brightness  pattern  power  repeat  subsystem  trigger  uevent

'/sys/class/leds/green:status':
brightness  device  max_brightness  pattern  power  repeat  subsystem  trigger  uevent

'/sys/class/leds/red:status':
brightness  device  max_brightness  pattern  power  repeat  subsystem  trigger  uevent

and with this change it becomes:

ls /sys/class/leds/rgb\:status
brightness  device  max_brightness  multi_index  multi_intensity  pattern  power  repeat  subsystem  trigger  uevent

where brightness sets the "RGB" we first describe in multi_intesity (like 248 0 0 for blue). that works and we should use this, see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/leds/well-known-leds.txt

but feedbackd (or in effect our userspace) doesn't seem to know about that. @guido.gunther do you have the userspace changes needed for this transition in your head already? :) thanks.

Merge request reports