From 11cfcdd7842146c6756ffa85667b6e7ef4958031 Mon Sep 17 00:00:00 2001
From: Matt DeVillier <matt.devillier@gmail.com>
Date: Sun, 29 Mar 2020 17:01:44 -0500
Subject: mb/google/cyan: Use ACPI backlight contrls

Enables ACPI backlight controls under Windows.

Test: boot Win 10 on cyan and edgar variants, verify
screen backlight controls available and functional.

Change-Id: I8976291b5bafaec934d0bfd91fcdab50b381beec
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40120
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
 src/mainboard/google/cyan/devicetree.cb | 3 +++
 src/mainboard/google/cyan/dsdt.asl      | 1 +
 2 files changed, 4 insertions(+)

(limited to 'src/mainboard/google/cyan')

diff --git a/src/mainboard/google/cyan/devicetree.cb b/src/mainboard/google/cyan/devicetree.cb
index b13f3f9e90..91e9795f9b 100644
--- a/src/mainboard/google/cyan/devicetree.cb
+++ b/src/mainboard/google/cyan/devicetree.cb
@@ -1,5 +1,8 @@
 chip soc/intel/braswell
 
+	# IGD Displays
+	register "gfx" = "GMA_STATIC_DISPLAYS(0)"
+
 	############################################################
 	# Set the parameters for MemoryInit
 	############################################################
diff --git a/src/mainboard/google/cyan/dsdt.asl b/src/mainboard/google/cyan/dsdt.asl
index 90dfa37ff5..f9f494093e 100644
--- a/src/mainboard/google/cyan/dsdt.asl
+++ b/src/mainboard/google/cyan/dsdt.asl
@@ -33,6 +33,7 @@ DefinitionBlock(
 		Device (PCI0)
 		{
 			#include <acpi/southcluster.asl>
+			#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 #if CONFIG(BOARD_GOOGLE_TERRA)
 			#include <variant/acpi/cpu.asl>
 #else
-- 
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