#define ACPI_IBM_METHOD_MIC_LED		15

	/* Mic led handle */

	ACPI_HANDLE	mic_led_handle;

	int		mic_led_state;

acpi_ibm_mic_led_set (struct acpi_ibm_softc *sc, int arg)

{

	ACPI_OBJECT_LIST input;

	ACPI_OBJECT params[1];

	ACPI_STATUS status;

	if (arg < 0 || arg > 1)

		return (EINVAL);

	if (sc->mic_led_handle) {

		params[0].Type = ACPI_TYPE_INTEGER;

		params[0].Integer.Value = 0;

		/* mic led: 0 off, 2 on */

		if (arg == 1)

			params[0].Integer.Value = 2;

		input.Pointer = params;

		input.Count = 1;

		status = AcpiEvaluateObject (sc->handle, "MMTS", &input, NULL);

		if (ACPI_SUCCESS(status))

			sc->mic_led_state = arg;

		return(status);

	}

	return (0);

}

static int

	/* The mic led is does not turn back on sysctl_set is called in the above loop */

	acpi_ibm_mic_led_set(sc, sc->mic_led_state);

	case ACPI_IBM_METHOD_MIC_LED:

		if (sc->mic_led_handle)

			return sc->mic_led_state;

		else

			val = -1;

		break;

	case ACPI_IBM_METHOD_MIC_LED:

		return acpi_ibm_mic_led_set (sc, arg);

		break;

	case ACPI_IBM_METHOD_MIC_LED:

		if (ACPI_SUCCESS(AcpiGetHandle(sc->handle, "MMTS", &sc->mic_led_handle)))

		{

			/* Turn off mic led by default */

			acpi_ibm_mic_led_set (sc, 0);

			return(TRUE);

		}

		else

			sc->mic_led_handle = NULL;

		return (FALSE);