CS5536_PM_GPE0_STS
outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
gpe = inl(acpi_base + CS5536_PM_GPE0_STS);
outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);