From cb8a72cace4fc5b10f95d453d8415596981604f0 Mon Sep 17 00:00:00 2001
From: Tim Crawford <tcrawford@system76.com>
Date: Fri, 17 Sep 2021 14:25:13 -0600
Subject: [PATCH] mb/system76/*: Apply custom backlight levels

Change-Id: Ibea37f19acca0d718211fc41706019a92a240c70
Signed-off-by: Tim Crawford <tcrawford@system76.com>
---
 .../system76/cml-u/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/cml-u/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/cml-u/dsdt.asl         |  1 -
 .../system76/darp7/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/darp7/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/darp7/dsdt.asl         |  1 -
 .../system76/galp5/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/galp5/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/galp5/dsdt.asl         |  1 -
 .../system76/gaze15/acpi/backlight.asl        | 31 +++++++++++++++++++
 .../system76/gaze15/acpi/mainboard.asl        |  3 ++
 src/mainboard/system76/gaze15/dsdt.asl        |  1 -
 .../system76/gaze16/acpi/backlight.asl        | 31 +++++++++++++++++++
 .../system76/gaze16/acpi/mainboard.asl        |  3 ++
 src/mainboard/system76/gaze16/dsdt.asl        |  1 -
 .../system76/lemp10/acpi/backlight.asl        | 31 +++++++++++++++++++
 .../system76/lemp10/acpi/mainboard.asl        |  3 ++
 src/mainboard/system76/lemp10/dsdt.asl        |  1 -
 .../system76/lemp9/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/lemp9/acpi/mainboard.asl         |  3 ++
 .../system76/oryp5/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/oryp5/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/oryp5/dsdt.asl         |  1 -
 .../system76/oryp6/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/oryp6/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/oryp6/dsdt.asl         |  1 -
 .../system76/oryp8/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/oryp8/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/oryp8/dsdt.asl         |  1 -
 .../system76/whl-u/acpi/backlight.asl         | 31 +++++++++++++++++++
 .../system76/whl-u/acpi/mainboard.asl         |  3 ++
 src/mainboard/system76/whl-u/dsdt.asl         |  1 -
 32 files changed, 374 insertions(+), 10 deletions(-)
 create mode 100644 src/mainboard/system76/cml-u/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/darp7/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/galp5/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/gaze15/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/gaze16/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/lemp10/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/lemp9/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/oryp5/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/oryp6/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/oryp8/acpi/backlight.asl
 create mode 100644 src/mainboard/system76/whl-u/acpi/backlight.asl

diff --git a/src/mainboard/system76/cml-u/acpi/backlight.asl b/src/mainboard/system76/cml-u/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/cml-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/cml-u/acpi/mainboard.asl b/src/mainboard/system76/cml-u/acpi/mainboard.asl
index 416cc5a151..3335ba8fdd 100644
--- a/src/mainboard/system76/cml-u/acpi/mainboard.asl
+++ b/src/mainboard/system76/cml-u/acpi/mainboard.asl
@@ -6,6 +6,9 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE) {
diff --git a/src/mainboard/system76/cml-u/dsdt.asl b/src/mainboard/system76/cml-u/dsdt.asl
index 982e226118..b633254edd 100644
--- a/src/mainboard/system76/cml-u/dsdt.asl
+++ b/src/mainboard/system76/cml-u/dsdt.asl
@@ -19,7 +19,6 @@ DefinitionBlock(
 	{
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/cannonlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/darp7/acpi/backlight.asl b/src/mainboard/system76/darp7/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/darp7/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/darp7/acpi/mainboard.asl b/src/mainboard/system76/darp7/acpi/mainboard.asl
index 4675bc94b8..c982a9ee4c 100644
--- a/src/mainboard/system76/darp7/acpi/mainboard.asl
+++ b/src/mainboard/system76/darp7/acpi/mainboard.asl
@@ -6,4 +6,7 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
diff --git a/src/mainboard/system76/darp7/dsdt.asl b/src/mainboard/system76/darp7/dsdt.asl
index fb40a5d67f..904073cc7d 100644
--- a/src/mainboard/system76/darp7/dsdt.asl
+++ b/src/mainboard/system76/darp7/dsdt.asl
@@ -20,7 +20,6 @@ DefinitionBlock(
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/tigerlake/acpi/southbridge.asl>
 		#include <soc/intel/tigerlake/acpi/tcss.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/galp5/acpi/backlight.asl b/src/mainboard/system76/galp5/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/galp5/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/galp5/acpi/mainboard.asl b/src/mainboard/system76/galp5/acpi/mainboard.asl
index 4675bc94b8..c982a9ee4c 100644
--- a/src/mainboard/system76/galp5/acpi/mainboard.asl
+++ b/src/mainboard/system76/galp5/acpi/mainboard.asl
@@ -6,4 +6,7 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
diff --git a/src/mainboard/system76/galp5/dsdt.asl b/src/mainboard/system76/galp5/dsdt.asl
index fb40a5d67f..904073cc7d 100644
--- a/src/mainboard/system76/galp5/dsdt.asl
+++ b/src/mainboard/system76/galp5/dsdt.asl
@@ -20,7 +20,6 @@ DefinitionBlock(
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/tigerlake/acpi/southbridge.asl>
 		#include <soc/intel/tigerlake/acpi/tcss.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/gaze15/acpi/backlight.asl b/src/mainboard/system76/gaze15/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/gaze15/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/gaze15/acpi/mainboard.asl b/src/mainboard/system76/gaze15/acpi/mainboard.asl
index 4e67439c56..b235437c25 100644
--- a/src/mainboard/system76/gaze15/acpi/mainboard.asl
+++ b/src/mainboard/system76/gaze15/acpi/mainboard.asl
@@ -6,6 +6,9 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE) {
diff --git a/src/mainboard/system76/gaze15/dsdt.asl b/src/mainboard/system76/gaze15/dsdt.asl
index d2bd57d78a..a48382b578 100644
--- a/src/mainboard/system76/gaze15/dsdt.asl
+++ b/src/mainboard/system76/gaze15/dsdt.asl
@@ -18,7 +18,6 @@ DefinitionBlock(
 	Device (\_SB.PCI0) {
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/cannonlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/gaze16/acpi/backlight.asl b/src/mainboard/system76/gaze16/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/gaze16/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/gaze16/acpi/mainboard.asl b/src/mainboard/system76/gaze16/acpi/mainboard.asl
index 4675bc94b8..c982a9ee4c 100644
--- a/src/mainboard/system76/gaze16/acpi/mainboard.asl
+++ b/src/mainboard/system76/gaze16/acpi/mainboard.asl
@@ -6,4 +6,7 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
diff --git a/src/mainboard/system76/gaze16/dsdt.asl b/src/mainboard/system76/gaze16/dsdt.asl
index a86fe9c6de..d2ca8d55f7 100644
--- a/src/mainboard/system76/gaze16/dsdt.asl
+++ b/src/mainboard/system76/gaze16/dsdt.asl
@@ -19,7 +19,6 @@ DefinitionBlock(
 	{
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/tigerlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/lemp10/acpi/backlight.asl b/src/mainboard/system76/lemp10/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/lemp10/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/lemp10/acpi/mainboard.asl b/src/mainboard/system76/lemp10/acpi/mainboard.asl
index 4675bc94b8..c982a9ee4c 100644
--- a/src/mainboard/system76/lemp10/acpi/mainboard.asl
+++ b/src/mainboard/system76/lemp10/acpi/mainboard.asl
@@ -6,4 +6,7 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
diff --git a/src/mainboard/system76/lemp10/dsdt.asl b/src/mainboard/system76/lemp10/dsdt.asl
index fb40a5d67f..904073cc7d 100644
--- a/src/mainboard/system76/lemp10/dsdt.asl
+++ b/src/mainboard/system76/lemp10/dsdt.asl
@@ -20,7 +20,6 @@ DefinitionBlock(
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/tigerlake/acpi/southbridge.asl>
 		#include <soc/intel/tigerlake/acpi/tcss.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/lemp9/acpi/backlight.asl b/src/mainboard/system76/lemp9/acpi/backlight.asl
new file mode 100644
index 0000000000..19635ac0c5
--- /dev/null
+++ b/src/mainboard/system76/lemp9/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/lemp9/acpi/mainboard.asl b/src/mainboard/system76/lemp9/acpi/mainboard.asl
index 416cc5a151..3335ba8fdd 100644
--- a/src/mainboard/system76/lemp9/acpi/mainboard.asl
+++ b/src/mainboard/system76/lemp9/acpi/mainboard.asl
@@ -6,6 +6,9 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE) {
diff --git a/src/mainboard/system76/oryp5/acpi/backlight.asl b/src/mainboard/system76/oryp5/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/oryp5/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/oryp5/acpi/mainboard.asl b/src/mainboard/system76/oryp5/acpi/mainboard.asl
index 4373b2a4a1..17d2221ab4 100644
--- a/src/mainboard/system76/oryp5/acpi/mainboard.asl
+++ b/src/mainboard/system76/oryp5/acpi/mainboard.asl
@@ -7,6 +7,9 @@
 Scope (\_SB)
 {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE)
diff --git a/src/mainboard/system76/oryp5/dsdt.asl b/src/mainboard/system76/oryp5/dsdt.asl
index 84059041d8..a58182052a 100644
--- a/src/mainboard/system76/oryp5/dsdt.asl
+++ b/src/mainboard/system76/oryp5/dsdt.asl
@@ -19,7 +19,6 @@ DefinitionBlock(
 	{
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/cannonlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/oryp6/acpi/backlight.asl b/src/mainboard/system76/oryp6/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/oryp6/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/oryp6/acpi/mainboard.asl b/src/mainboard/system76/oryp6/acpi/mainboard.asl
index 4e67439c56..b235437c25 100644
--- a/src/mainboard/system76/oryp6/acpi/mainboard.asl
+++ b/src/mainboard/system76/oryp6/acpi/mainboard.asl
@@ -6,6 +6,9 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE) {
diff --git a/src/mainboard/system76/oryp6/dsdt.asl b/src/mainboard/system76/oryp6/dsdt.asl
index d2bd57d78a..a48382b578 100644
--- a/src/mainboard/system76/oryp6/dsdt.asl
+++ b/src/mainboard/system76/oryp6/dsdt.asl
@@ -18,7 +18,6 @@ DefinitionBlock(
 	Device (\_SB.PCI0) {
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/cannonlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/oryp8/acpi/backlight.asl b/src/mainboard/system76/oryp8/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/oryp8/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/oryp8/acpi/mainboard.asl b/src/mainboard/system76/oryp8/acpi/mainboard.asl
index 4675bc94b8..c982a9ee4c 100644
--- a/src/mainboard/system76/oryp8/acpi/mainboard.asl
+++ b/src/mainboard/system76/oryp8/acpi/mainboard.asl
@@ -6,4 +6,7 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
diff --git a/src/mainboard/system76/oryp8/dsdt.asl b/src/mainboard/system76/oryp8/dsdt.asl
index fb40a5d67f..904073cc7d 100644
--- a/src/mainboard/system76/oryp8/dsdt.asl
+++ b/src/mainboard/system76/oryp8/dsdt.asl
@@ -20,7 +20,6 @@ DefinitionBlock(
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/tigerlake/acpi/southbridge.asl>
 		#include <soc/intel/tigerlake/acpi/tcss.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/system76/whl-u/acpi/backlight.asl b/src/mainboard/system76/whl-u/acpi/backlight.asl
new file mode 100644
index 0000000000..f020234450
--- /dev/null
+++ b/src/mainboard/system76/whl-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/whl-u/acpi/mainboard.asl b/src/mainboard/system76/whl-u/acpi/mainboard.asl
index ade0bb2625..2495377d68 100644
--- a/src/mainboard/system76/whl-u/acpi/mainboard.asl
+++ b/src/mainboard/system76/whl-u/acpi/mainboard.asl
@@ -6,6 +6,9 @@
 
 Scope (\_SB) {
 	#include "sleep.asl"
+	Scope (PCI0) {
+		#include "backlight.asl"
+	}
 }
 
 Scope (\_GPE) {
diff --git a/src/mainboard/system76/whl-u/dsdt.asl b/src/mainboard/system76/whl-u/dsdt.asl
index 84059041d8..a58182052a 100644
--- a/src/mainboard/system76/whl-u/dsdt.asl
+++ b/src/mainboard/system76/whl-u/dsdt.asl
@@ -19,7 +19,6 @@ DefinitionBlock(
 	{
 		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 		#include <soc/intel/cannonlake/acpi/southbridge.asl>
-		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>