voyager_control_gpio
voyager_control_gpio(sc, ~(1 << 16), 0);
voyager_control_gpio(sc->sc_parent, 0xffffffff, SM502_AUDIO_GPIO_MASK);
voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0);
voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0);
voyager_control_gpio(sc->sc_gpio_cookie,
voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0);