driver/meta/backlight_driver.cml

{
    program: {
        runner: 'driver',
        binary: 'driver/libbacklight_driver.so',
        bind: 'meta/bind/backlight_driver.bindbc'
    },
    use: [
        {
            protocol: [
              'fuchsia.logger.LogSink',
              'fuchsia.device.fs.Exporter'
            ],
        },
        {
            service: [
                "fuchsia.hardware.acpi.Service",
                "fuchsia.driver.compat.Service",
            ],
        },
    ],
}