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/backlight/panel0-backlight/actual_brightness

    chmod 0644 /sys/class/backlight/panel0-backlight/brightness
    chmod 0644 /sys/class/backlight/panel0-backlight/max_brightness

    chown system system /sys/class/leds/white/brightness
    chown system system /sys/class/leds/white/blink

    chown system system /sys/class/leds/red/blink
    chown system system /sys/class/leds/red/brightness
    chown system system /sys/class/leds/red/duty_pcts
    chown system system /sys/class/leds/red/pause_hi
    chown system system /sys/class/leds/red/pause_lo
    chown system system /sys/class/leds/red/ramp_step_ms
    chown system system /sys/class/leds/red/start_idx
    chown system system /sys/class/leds/red/lut_flags

    chown system system /sys/class/leds/blue/blink
    chown system system /sys/class/leds/blue/brightness
    chown system system /sys/class/leds/blue/duty_pcts
    chown system system /sys/class/leds/blue/pause_hi
    chown system system /sys/class/leds/blue/pause_lo
    chown system system /sys/class/leds/blue/ramp_step_ms
    chown system system /sys/class/leds/blue/start_idx
    chown system system /sys/class/leds/blue/lut_flags

    chown system system /sys/class/leds/green/blink
    chown system system /sys/class/leds/green/brightness
    chown system system /sys/class/leds/green/duty_pcts
    chown system system /sys/class/leds/green/pause_hi
    chown system system /sys/class/leds/green/pause_lo
    chown system system /sys/class/leds/green/ramp_step_ms
    chown system system /sys/class/leds/green/start_idx
    chown system system /sys/class/leds/green/lut_flags

    chmod 660 /sys/class/leds/red/blink
    chmod 660 /sys/class/leds/red/duty_pcts
    chmod 660 /sys/class/leds/red/pause_hi
    chmod 660 /sys/class/leds/red/pause_lo
    chmod 660 /sys/class/leds/red/ramp_step_ms
    chmod 660 /sys/class/leds/red/start_idx

    chmod 660 /sys/class/leds/blue/blink
    chmod 660 /sys/class/leds/blue/duty_pcts
    chmod 660 /sys/class/leds/blue/pause_hi
    chmod 660 /sys/class/leds/blue/pause_lo
    chmod 660 /sys/class/leds/blue/ramp_step_ms
    chmod 660 /sys/class/leds/blue/start_idx

    chmod 660 /sys/class/leds/green/blink
    chmod 660 /sys/class/leds/green/duty_pcts
    chmod 660 /sys/class/leds/green/pause_hi
    chmod 660 /sys/class/leds/green/pause_lo
    chmod 660 /sys/class/leds/green/ramp_step_ms
    chmod 660 /sys/class/leds/green/start_idx

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