on boot
    chown system system /sys/class/backlight/panel0-backlight/brightness
    chown system system /sys/class/backlight/panel0-backlight/max_brightness
    chown system system /sys/class/leds/white/brightness
    chown system system /sys/class/leds/white/breath
    chmod 0644 /sys/class/backlight/panel0-backlight/brightness
    chmod 0644 /sys/class/backlight/panel0-backlight/max_brightness
    chmod 0644 /sys/class/leds/white/brightness
    chmod 0644 /sys/class/leds/white/breath

service vendor.light-hal-2-0 /vendor/bin/hw/android.hardware.light@2.0-service.xiaomi_sm6250
    interface android.hardware.light@2.0::ILight default
    class hal
    user system
    group system
    # shutting off lights while powering-off
    shutdown critical