8ff2ecd344
Add hook to generate ACPI methods in SSDT for screen backlight control. To make use of this, individual boards will need to include default_brightness_levels.asl in their dsdt, as well as add 'register "gfx" = "GMA_STATIC_DISPLAYS(0)"' to their devicetree. Change-Id: I0adccc6c8bee71d3c1b7840518308c8dc8ea2d81 Signed-off-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39943 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>