ACPI_EV_DISPLAY_SWITCH 229 drivers/gpu/drm/gma500/opregion.c #define ACPI_EV_DISPLAY_SWITCH (1<<0) ACPI_EV_DISPLAY_SWITCH 614 drivers/gpu/drm/i915/display/intel_opregion.c #define ACPI_EV_DISPLAY_SWITCH (1<<0)