on init
    chown system system /sys/class/backlight/rpi_backlight/brightness
    chmod 660 /sys/class/backlight/rpi_backlight/brightness

service vendor.light-hal-2-0 /vendor/bin/hw/android.hardware.light@2.0-service.rpi
    interface android.hardware.light@2.0::ILight default
    class hal
    user system
    group system
    # shutting off lights while powering-off
    shutdown critical