From 1f81af52a4efde39ba0127b724c6c2e19d0329cd Mon Sep 17 00:00:00 2001
From: Tim Crawford <tcrawford@system76.com>
Date: Mon, 5 Dec 2022 08:49:46 -0700
Subject: mb/system76: Add custom backlight levels for Intel GMA

Add custom backlight levels for all models except:

- addw1/addw2: Uses an OLED display
- bonw14: Does not use the iGPU

Change-Id: Ibea37f19acca0d718211fc41706019a92a240c70
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61301
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jeremy Soller <jeremy@system76.com>
---
 src/mainboard/system76/kbl-u/acpi/backlight.asl | 31 +++++++++++++++++++++++++
 src/mainboard/system76/kbl-u/acpi/mainboard.asl |  4 ++++
 2 files changed, 35 insertions(+)
 create mode 100644 src/mainboard/system76/kbl-u/acpi/backlight.asl

(limited to 'src/mainboard/system76/kbl-u/acpi')

diff --git a/src/mainboard/system76/kbl-u/acpi/backlight.asl b/src/mainboard/system76/kbl-u/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/kbl-u/acpi/backlight.asl
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <drivers/intel/gma/acpi/gma.asl>
+
+Scope (GFX0)
+{
+	Name (BRIG, Package (22) {
+		40, /* default AC */
+		40, /* default Battery */
+		5,
+		10,
+		15,
+		20,
+		25,
+		30,
+		35,
+		40,
+		45,
+		50,
+		55,
+		60,
+		65,
+		70,
+		75,
+		80,
+		85,
+		90,
+		95,
+		100
+	})
+}
diff --git a/src/mainboard/system76/kbl-u/acpi/mainboard.asl b/src/mainboard/system76/kbl-u/acpi/mainboard.asl
index 11735e8e01..a36923f467 100644
--- a/src/mainboard/system76/kbl-u/acpi/mainboard.asl
+++ b/src/mainboard/system76/kbl-u/acpi/mainboard.asl
@@ -1,6 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 Scope (\_SB) {
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
+
 	#include "ac.asl"
 	#include "battery.asl"
 	#include "buttons.asl"
-- 
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