Thinkpad keyboard backlight brightness

This service will set the keyboard backlight brightness based on ambient light levels.

Install

$ sudo make install

Configure

$ sudo systemctl edit thinkpad-keyboard-brightness.service

Variables that can change depending on device

[Service]
Environment=SENSOR=/sys/bus/iio/devices/iio:device2/in_illuminance_raw
Environment=TRIGGER=/sys/class/leds/tpacpi::kbd_backlight/brightness
Environment=THRESHOLD=1500
Environment=VALUE=1

Uninstall

$ sudo make uninstall