/******************************************************************************* * * FUNCTION: AcpiSetGpe * * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 * GpeNumber - GPE level within the GPE block * Action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE * * RETURN: Status * * DESCRIPTION: Enable or disable an individual GPE. This function bypasses * the reference count mechanism used in the AcpiEnableGpe(), * AcpiDisableGpe() interfaces. * This API is typically used by the GPE raw handler mode driver * to switch between the polling mode and the interrupt mode after * the driver has enabled the GPE. * The APIs should be invoked in this order: * AcpiEnableGpe() <- Ensure the reference count > 0 * AcpiSetGpe(ACPI_GPE_DISABLE) <- Enter polling mode * AcpiSetGpe(ACPI_GPE_ENABLE) <- Leave polling mode * AcpiDisableGpe() <- Decrease the reference count * * Note: If a GPE is shared by 2 silicon components, then both the drivers * should support GPE polling mode or disabling the GPE for long period * for one driver may break the other. So use it with care since all * firmware _Lxx/_Exx handlers currently rely on the GPE interrupt mode. * ******************************************************************************/