When using current LCD drivers as ledtrig backlight they're not registered with the backlight device class. This has two problems: they're usually not found by userspace since these tools usually look in /sys/class/backlight and they can't be used as backlight phandles in device tree for e.g. LCD panels. This is an RFC if this is worthwhile at all? A current problem is that changing the LED brightness does currently not notify the class backlight so they can get out of sync but i could look into that if the approach makes sense. Guido Günther (1): leds: backlight: register with class backlight too drivers/leds/trigger/ledtrig-backlight.c | 54 ++++++++++++++++++++++++ 1 file changed, 54 insertions(+) -- 2.23.0