[coreboot-gerrit] Change in coreboot[master]: soc/intel/broadwell: add ACPI backlight support

[Matt DeVillier (Code Review)]

Hello build bot (Jenkins), Angel Pons, Patrick Rudolph,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/39941

to look at the new patch set (#3).

Change subject: soc/intel/broadwell: add ACPI backlight support
......................................................................

soc/intel/broadwell: add ACPI backlight support

Add framework to generate ACPI methods in SSDT for
screen backlight control. Adjust params for gtt_ methods
to match prototypes in i915.h and avoid conflicts.

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: If93b7690ef36b5d19ca43957e8a1bef91ec5821d
Signed-off-by: Matt DeVillier 
---
M src/soc/intel/broadwell/chip.h
M src/soc/intel/broadwell/igd.c
2 files changed, 23 insertions(+), 11 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/39941/3