igd.asl rewrite

Old igd.asl had inconsistent addresses (between _DOD and actual device)
and ghost devices. Any of those is enough to make brightness on windows
fail and make igd.asl out-of-ACPI-spec. Also old code favoured ridiculous
copying of the same thing 6 times per chipset. Leave only hooking up and
chipset-specific part in chipset directory. Move NVS handling and ACPI-spec
parts to a common file.

Change-Id: I556769e5e28b83e7465e3db689e26c8c0ab44757
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7472
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>

98 files changed, 155 insertions, 715 deletions

diff --git a/src/mainboard/apple/macbook21/acpi/video.asl b/src/mainboard/apple/macbook21/acpi/video.asl
deleted file mode 100644
index 9b8750b06e..0000000000
--- a/src/mainboard/apple/macbook21/acpi/video.asl
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (c) 2011 Sven Schnelle <svens@stackframe.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-Device (DSPC)
-{
-	Name (_ADR, 0x00020001)
-	OperationRegion (DSPC, PCI_Config, 0x00, 0x100)
-	Field (DSPC, ByteAcc, NoLock, Preserve)
-	{
-		Offset (0xf4),
-		       BRTC, 8
-	}
-
-	Method(BRTD, 0, NotSerialized)
-	{
-		Store(BRTC, Local0)
-		if (LGreater (Local0, 15))
-		{
-			Subtract(Local0, 16, Local0)
-			Store(Local0, BRTC)
-		}
-	}
-
-	Method(BRTU, 0, NotSerialized)
-	{
-		Store (BRTC, Local0)
-		if (LLess(Local0, 0xff))
-		{
-			Add (Local0, 16, Local0)
-			Store(Local0, BRTC)
-		}
-	}
-}
diff --git a/src/mainboard/apple/macbook21/acpi_tables.c b/src/mainboard/apple/macbook21/acpi_tables.c
index 64b1fc6bad..4e4cf1e576 100644
--- a/src/mainboard/apple/macbook21/acpi_tables.c
+++ b/src/mainboard/apple/macbook21/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/apple/macbook21/cmos.default b/src/mainboard/apple/macbook21/cmos.default
index 0185e94f64..e0b992c578 100644
--- a/src/mainboard/apple/macbook21/cmos.default
+++ b/src/mainboard/apple/macbook21/cmos.default
@@ -9,7 +9,6 @@ boot_default=0x40
 cmos_defaults_loaded=Yes
 lpt=Enable
 volume=0x3
-tft_brightness=0xff
 first_battery=Primary
 bluetooth=Enable
 wlan=Enable
diff --git a/src/mainboard/apple/macbook21/cmos.layout b/src/mainboard/apple/macbook21/cmos.layout
index 3211f5cd86..5bb8a37851 100644
--- a/src/mainboard/apple/macbook21/cmos.layout
+++ b/src/mainboard/apple/macbook21/cmos.layout
@@ -85,7 +85,6 @@ entries
 1052         4       r       0        C1DRT1
 
 1064         8       h       0        volume
-1072         8       h       0        tft_brightness
 1080         1       e       9        first_battery
 1081         1       e       1        bluetooth
 1082         1       e       1        wwan
diff --git a/src/mainboard/apple/macbook21/devicetree.cb b/src/mainboard/apple/macbook21/devicetree.cb
index e70ca052bd..04302175c7 100644
--- a/src/mainboard/apple/macbook21/devicetree.cb
+++ b/src/mainboard/apple/macbook21/devicetree.cb
@@ -20,11 +20,14 @@
 ##
 
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	register "gpu_hotplug" = "0x00000220"
 	register "gpu_lvds_use_spread_spectrum_clock" = "1"
 	register "gpu_lvds_is_dual_channel" = "0"
-	register "gpu_backlight" = "0x1280128"
+	register "gpu_backlight" = "0x1290128"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_mFCPGA478
diff --git a/src/mainboard/emulation/qemu-q35/mainboard.c b/src/mainboard/emulation/qemu-q35/mainboard.c
index 30f9b3c237..a7256a5449 100644
--- a/src/mainboard/emulation/qemu-q35/mainboard.c
+++ b/src/mainboard/emulation/qemu-q35/mainboard.c
@@ -25,6 +25,7 @@
 #include <pc80/keyboard.h>
 #include <arch/io.h>
 #include <console/console.h>
+#include <drivers/intel/gma/i915.h>
 
 #define Q35_PAM0            0x90
 
@@ -33,6 +34,19 @@ static const unsigned char qemu_q35_irqs[] = {
 	10, 10, 11, 11,
 };
 
+struct i915_gpu_controller_info gfx_controller_info = {
+	.ndid = 3,
+	.did = {
+		0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005
+	}
+};
+
+const struct i915_gpu_controller_info *
+intel_gma_get_controller_info(void)
+{	
+	return &gfx_controller_info;
+}
+
 static void qemu_nb_init(device_t dev)
 {
 	/* Map memory at 0xc0000 - 0xfffff */
diff --git a/src/mainboard/getac/p470/acpi/ec.asl b/src/mainboard/getac/p470/acpi/ec.asl
index 67a028eeb8..e9d46e452c 100644
--- a/src/mainboard/getac/p470/acpi/ec.asl
+++ b/src/mainboard/getac/p470/acpi/ec.asl
@@ -192,7 +192,7 @@ Device(EC0)
 	{
 		Store(0x3f, HOTK)
 		If(IGDS) {
-			HKDS(10)
+			Notify (\_SB.PCI0.GFX0, 0x82)
 		} Else {
 			TRAP(0xE1)
 		}
diff --git a/src/mainboard/getac/p470/acpi/video.asl b/src/mainboard/getac/p470/acpi/video.asl
deleted file mode 100644
index 1c9ccfde60..0000000000
--- a/src/mainboard/getac/p470/acpi/video.asl
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/getac/p470/acpi_tables.c b/src/mainboard/getac/p470/acpi_tables.c
index bc805dc678..b6cd654760 100644
--- a/src/mainboard/getac/p470/acpi_tables.c
+++ b/src/mainboard/getac/p470/acpi_tables.c
@@ -37,14 +37,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* Enable COM port(s) */
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x00;
-
-	/* IGD Displays  */
-	gnvs->ndid = 2;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000410;
-	gnvs->did[2] = 0x80000320;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 static long acpi_create_ecdt(acpi_ecdt_t * ecdt)
diff --git a/src/mainboard/getac/p470/devicetree.cb b/src/mainboard/getac/p470/devicetree.cb
index f32deadab6..cbf7651323 100644
--- a/src/mainboard/getac/p470/devicetree.cb
+++ b/src/mainboard/getac/p470/devicetree.cb
@@ -19,6 +19,9 @@
 ##
 
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "2"
+	register "gfx.did" = "{ 0x80000100, 0x80000410, 0x80000320, 0x80000410, 0x00000005 }"
 
         device cpu_cluster 0 on
                 chip cpu/intel/socket_mFCPGA478
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/acpi_tables.c b/src/mainboard/gigabyte/ga-b75m-d3h/acpi_tables.c
index 23a8a00ffa..70eeeb2bdc 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/acpi_tables.c
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/acpi_tables.c
@@ -56,14 +56,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	// the lid is open by default.
 	gnvs->lids = 1;
 
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
index 3c7641a171..fa949e959a 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/devicetree.cb
@@ -1,4 +1,8 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
+
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_LGA1155
 			device lapic 0 on end
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/acpi/mainboard.asl b/src/mainboard/gigabyte/ga-b75m-d3v/acpi/mainboard.asl
deleted file mode 100644
index 507dd7d8af..0000000000
--- a/src/mainboard/gigabyte/ga-b75m-d3v/acpi/mainboard.asl
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2015 Damien Zammit <damien@zamaudio.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-Method (BRTN, 1, Serialized)
-{
-	If (LEqual (And (DID1, 0x0F00), 0x0400))
-	{
-		Notify (\_SB.PCI0.GFX0.DD01, Arg0)
-	}
-
-	If (LEqual (And (DID2, 0x0F00), 0x0400))
-	{
-		Notify (\_SB.PCI0.GFX0.DD02, Arg0)
-	}
-
-	If (LEqual (And (DID3, 0x0F00), 0x0400))
-	{
-		Notify (\_SB.PCI0.GFX0.DD03, Arg0)
-	}
-
-	If (LEqual (And (DID4, 0x0F00), 0x0400))
-	{
-		Notify (\_SB.PCI0.GFX0.DD04, Arg0)
-	}
-
-	If (LEqual (And (DID5, 0x0F00), 0x0400))
-	{
-		Notify (\_SB.PCI0.GFX0.DD05, Arg0)
-	}
-}
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/acpi_tables.c b/src/mainboard/gigabyte/ga-b75m-d3v/acpi_tables.c
index 23a8a00ffa..70eeeb2bdc 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3v/acpi_tables.c
+++ b/src/mainboard/gigabyte/ga-b75m-d3v/acpi_tables.c
@@ -56,14 +56,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	// the lid is open by default.
 	gnvs->lids = 1;
 
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb b/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
index 1c08359cb3..369bc6f9da 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-b75m-d3v/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
+
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_LGA1155
 			device lapic 0 on end
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl b/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
index fcc6f8fa30..e79d611e7a 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
@@ -11,7 +11,6 @@ DefinitionBlock(
 
 	// Some generic macros
 	#include "acpi/platform.asl"
-	#include "acpi/mainboard.asl"
 	#include <cpu/intel/model_206ax/acpi/cpu.asl>
 	/* global NVS and variables.  */
 	#include <southbridge/intel/bd82x6x/acpi/globalnvs.asl>
diff --git a/src/mainboard/google/bolt/acpi_tables.c b/src/mainboard/google/bolt/acpi_tables.c
index dba5348367..42dcb07953 100644
--- a/src/mainboard/google/bolt/acpi_tables.c
+++ b/src/mainboard/google/bolt/acpi_tables.c
@@ -66,13 +66,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = google_ec_running_ro() ?
diff --git a/src/mainboard/google/bolt/devicetree.cb b/src/mainboard/google/bolt/devicetree.cb
index 1d1eab52a9..1acd781a24 100644
--- a/src/mainboard/google/bolt/devicetree.cb
+++ b/src/mainboard/google/bolt/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable eDP Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/butterfly/acpi_tables.c b/src/mainboard/google/butterfly/acpi_tables.c
index f5e87d1f16..bf0c0dc0fb 100644
--- a/src/mainboard/google/butterfly/acpi_tables.c
+++ b/src/mainboard/google/butterfly/acpi_tables.c
@@ -54,13 +54,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	// TODO: MLR
 	// The firmware read/write status is a "virtual" switch and
diff --git a/src/mainboard/google/butterfly/devicetree.cb b/src/mainboard/google/butterfly/devicetree.cb
index 90925b95f3..47d6a10efc 100644
--- a/src/mainboard/google/butterfly/devicetree.cb
+++ b/src/mainboard/google/butterfly/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/falco/acpi_tables.c b/src/mainboard/google/falco/acpi_tables.c
index 238b48d0fd..8a6ef01320 100644
--- a/src/mainboard/google/falco/acpi_tables.c
+++ b/src/mainboard/google/falco/acpi_tables.c
@@ -60,13 +60,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = google_ec_running_ro() ?
diff --git a/src/mainboard/google/falco/devicetree.cb b/src/mainboard/google/falco/devicetree.cb
index 7a8e757877..8cdb0325d3 100644
--- a/src/mainboard/google/falco/devicetree.cb
+++ b/src/mainboard/google/falco/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable eDP Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/link/acpi_tables.c b/src/mainboard/google/link/acpi_tables.c
index 36edf5b0da..3f5adea811 100644
--- a/src/mainboard/google/link/acpi_tables.c
+++ b/src/mainboard/google/link/acpi_tables.c
@@ -64,14 +64,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 1;
-	gnvs->did[0] = 0x80000000;
-	gnvs->did[1] = 0x80000000;
-	gnvs->did[2] = 0x00000000;
-	gnvs->did[3] = 0x00000000;
-	gnvs->did[4] = 0x00000000;
-
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = google_ec_running_ro() ?
 		ACTIVE_ECFW_RO : ACTIVE_ECFW_RW;
diff --git a/src/mainboard/google/link/devicetree.cb b/src/mainboard/google/link/devicetree.cb
index 5333dfc2c3..382a8c4d9f 100644
--- a/src/mainboard/google/link/devicetree.cb
+++ b/src/mainboard/google/link/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "1"
+	register "gfx.did" = "{ 0x80000000, 0x80000000, 0x00000000, 0x00000000, 0x00000000 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/panther/acpi_tables.c b/src/mainboard/google/panther/acpi_tables.c
index 2876e02072..c4efd7e5c1 100644
--- a/src/mainboard/google/panther/acpi_tables.c
+++ b/src/mainboard/google/panther/acpi_tables.c
@@ -77,13 +77,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	// SuperIO is always RO
diff --git a/src/mainboard/google/panther/devicetree.cb b/src/mainboard/google/panther/devicetree.cb
index 2032fd426b..af6043f52c 100644
--- a/src/mainboard/google/panther/devicetree.cb
+++ b/src/mainboard/google/panther/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Disable eDP Hotplug
 	register "gpu_dp_d_hotplug" = "0x00"
diff --git a/src/mainboard/google/parrot/acpi_tables.c b/src/mainboard/google/parrot/acpi_tables.c
index e2c2d4a4ce..14d5420aa9 100644
--- a/src/mainboard/google/parrot/acpi_tables.c
+++ b/src/mainboard/google/parrot/acpi_tables.c
@@ -55,13 +55,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = parrot_ec_running_ro() ?
diff --git a/src/mainboard/google/parrot/devicetree.cb b/src/mainboard/google/parrot/devicetree.cb
index a4baafd9ca..034309fb95 100644
--- a/src/mainboard/google/parrot/devicetree.cb
+++ b/src/mainboard/google/parrot/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort B Hotplug with 6ms pulse
 	register "gpu_dp_b_hotplug" = "0x06"
diff --git a/src/mainboard/google/peppy/acpi_tables.c b/src/mainboard/google/peppy/acpi_tables.c
index 82c4666283..47288aa7db 100644
--- a/src/mainboard/google/peppy/acpi_tables.c
+++ b/src/mainboard/google/peppy/acpi_tables.c
@@ -69,13 +69,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = google_ec_running_ro() ?
diff --git a/src/mainboard/google/peppy/devicetree.cb b/src/mainboard/google/peppy/devicetree.cb
index 894d3ef900..505b39e0b9 100644
--- a/src/mainboard/google/peppy/devicetree.cb
+++ b/src/mainboard/google/peppy/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable eDP Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/slippy/acpi_tables.c b/src/mainboard/google/slippy/acpi_tables.c
index dba5348367..42dcb07953 100644
--- a/src/mainboard/google/slippy/acpi_tables.c
+++ b/src/mainboard/google/slippy/acpi_tables.c
@@ -66,13 +66,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = google_ec_running_ro() ?
diff --git a/src/mainboard/google/slippy/devicetree.cb b/src/mainboard/google/slippy/devicetree.cb
index f50882cc6d..3d4c8c5068 100644
--- a/src/mainboard/google/slippy/devicetree.cb
+++ b/src/mainboard/google/slippy/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable eDP Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/google/stout/acpi_tables.c b/src/mainboard/google/stout/acpi_tables.c
index 89f249f6ed..4fa736fc8a 100644
--- a/src/mainboard/google/stout/acpi_tables.c
+++ b/src/mainboard/google/stout/acpi_tables.c
@@ -58,13 +58,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	gnvs->chromeos.vbt2 = get_recovery_mode_switch() ?
diff --git a/src/mainboard/google/stout/devicetree.cb b/src/mainboard/google/stout/devicetree.cb
index 4ac89f629f..cd33cd76dc 100644
--- a/src/mainboard/google/stout/devicetree.cb
+++ b/src/mainboard/google/stout/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/ibase/mb899/acpi/video.asl b/src/mainboard/ibase/mb899/acpi/video.asl
deleted file mode 100644
index e4f764c620..0000000000
--- a/src/mainboard/ibase/mb899/acpi/video.asl
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/ibase/mb899/acpi_tables.c b/src/mainboard/ibase/mb899/acpi_tables.c
index 075aeeca0c..5972382147 100644
--- a/src/mainboard/ibase/mb899/acpi_tables.c
+++ b/src/mainboard/ibase/mb899/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/ibase/mb899/devicetree.cb b/src/mainboard/ibase/mb899/devicetree.cb
index a26d7c2c8e..77ceaddc52 100644
--- a/src/mainboard/ibase/mb899/devicetree.cb
+++ b/src/mainboard/ibase/mb899/devicetree.cb
@@ -1,4 +1,8 @@
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
+
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_mFCPGA478
 			device lapic 0 on end
diff --git a/src/mainboard/intel/baskingridge/acpi_tables.c b/src/mainboard/intel/baskingridge/acpi_tables.c
index 5f82911ceb..2f5e0cd592 100644
--- a/src/mainboard/intel/baskingridge/acpi_tables.c
+++ b/src/mainboard/intel/baskingridge/acpi_tables.c
@@ -79,13 +79,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	/* TPM Present */
 	gnvs->tpmp = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 #if CONFIG_CHROMEOS
 	/* Emerald Lake has no EC (?) */
diff --git a/src/mainboard/intel/baskingridge/devicetree.cb b/src/mainboard/intel/baskingridge/devicetree.cb
index cd341d13f8..a9cfb49527 100644
--- a/src/mainboard/intel/baskingridge/devicetree.cb
+++ b/src/mainboard/intel/baskingridge/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/haswell
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort 1 Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/intel/cougar_canyon2/acpi_tables.c b/src/mainboard/intel/cougar_canyon2/acpi_tables.c
index f9c1e0959e..fce84fefde 100644
--- a/src/mainboard/intel/cougar_canyon2/acpi_tables.c
+++ b/src/mainboard/intel/cougar_canyon2/acpi_tables.c
@@ -62,16 +62,7 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 1;
 	gnvs->s5u1 = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	acpi_update_thermal_table(gnvs);
-
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/intel/cougar_canyon2/devicetree.cb b/src/mainboard/intel/cougar_canyon2/devicetree.cb
index c386853a1c..d7c6aabd4e 100644
--- a/src/mainboard/intel/cougar_canyon2/devicetree.cb
+++ b/src/mainboard/intel/cougar_canyon2/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/fsp_sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort 1 Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/intel/d945gclf/acpi/video.asl b/src/mainboard/intel/d945gclf/acpi/video.asl
deleted file mode 100644
index 83bbabd788..0000000000
--- a/src/mainboard/intel/d945gclf/acpi/video.asl
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/intel/emeraldlake2/acpi_tables.c b/src/mainboard/intel/emeraldlake2/acpi_tables.c
index bb6218a854..1d7bcb0e88 100644
--- a/src/mainboard/intel/emeraldlake2/acpi_tables.c
+++ b/src/mainboard/intel/emeraldlake2/acpi_tables.c
@@ -78,13 +78,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 1;
 	gnvs->s5u1 = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	acpi_update_thermal_table(gnvs);
 
diff --git a/src/mainboard/intel/emeraldlake2/devicetree.cb b/src/mainboard/intel/emeraldlake2/devicetree.cb
index e5a8ea0edd..0b3e7888d6 100644
--- a/src/mainboard/intel/emeraldlake2/devicetree.cb
+++ b/src/mainboard/intel/emeraldlake2/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort 1 Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/iwave/iWRainbowG6/acpi/video.asl b/src/mainboard/iwave/iWRainbowG6/acpi/video.asl
deleted file mode 100644
index 1c9ccfde60..0000000000
--- a/src/mainboard/iwave/iWRainbowG6/acpi/video.asl
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/iwave/iWRainbowG6/acpi_tables.c b/src/mainboard/iwave/iWRainbowG6/acpi_tables.c
index 63d6c1ec2d..ef7ad44c04 100644
--- a/src/mainboard/iwave/iWRainbowG6/acpi_tables.c
+++ b/src/mainboard/iwave/iWRainbowG6/acpi_tables.c
@@ -40,14 +40,6 @@ void acpi_create_gnvs(global_nvs_t * gnvs)
 	/* Enable both COM ports. */
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
-
-	/* IGD Displays. */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/iwave/iWRainbowG6/devicetree.cb b/src/mainboard/iwave/iWRainbowG6/devicetree.cb
index 84cfc4b203..29e9e5e38b 100644
--- a/src/mainboard/iwave/iWRainbowG6/devicetree.cb
+++ b/src/mainboard/iwave/iWRainbowG6/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sch
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_441
diff --git a/src/mainboard/kontron/986lcd-m/acpi/video.asl b/src/mainboard/kontron/986lcd-m/acpi/video.asl
deleted file mode 100644
index e4f764c620..0000000000
--- a/src/mainboard/kontron/986lcd-m/acpi/video.asl
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/kontron/986lcd-m/acpi_tables.c b/src/mainboard/kontron/986lcd-m/acpi_tables.c
index 075aeeca0c..5972382147 100644
--- a/src/mainboard/kontron/986lcd-m/acpi_tables.c
+++ b/src/mainboard/kontron/986lcd-m/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/kontron/986lcd-m/devicetree.cb b/src/mainboard/kontron/986lcd-m/devicetree.cb
index 6a5b22151f..b9ddf75fb1 100644
--- a/src/mainboard/kontron/986lcd-m/devicetree.cb
+++ b/src/mainboard/kontron/986lcd-m/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
         device cpu_cluster 0 on
                 chip cpu/intel/socket_mFCPGA478
diff --git a/src/mainboard/kontron/ktqm77/acpi_tables.c b/src/mainboard/kontron/ktqm77/acpi_tables.c
index 32e539f8cf..54ff5d471e 100644
--- a/src/mainboard/kontron/ktqm77/acpi_tables.c
+++ b/src/mainboard/kontron/ktqm77/acpi_tables.c
@@ -52,14 +52,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 0;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	acpi_update_thermal_table(gnvs);
 }
 
diff --git a/src/mainboard/kontron/ktqm77/devicetree.cb b/src/mainboard/kontron/ktqm77/devicetree.cb
index 855fd5c7f6..24306ef8f9 100644
--- a/src/mainboard/kontron/ktqm77/devicetree.cb
+++ b/src/mainboard/kontron/ktqm77/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_rPGA989
diff --git a/src/mainboard/lenovo/t420s/acpi_tables.c b/src/mainboard/lenovo/t420s/acpi_tables.c
index 3133f9daf4..bcedb02674 100644
--- a/src/mainboard/lenovo/t420s/acpi_tables.c
+++ b/src/mainboard/lenovo/t420s/acpi_tables.c
@@ -51,14 +51,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	// the lid is open by default.
 	gnvs->lids = 1;
 
diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb
index 7fd6a53ce7..e43ac48bc0 100644
--- a/src/mainboard/lenovo/t420s/devicetree.cb
+++ b/src/mainboard/lenovo/t420s/devicetree.cb
@@ -1,4 +1,6 @@
 chip northbridge/intel/sandybridge
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/t420s/dsdt.asl b/src/mainboard/lenovo/t420s/dsdt.asl
index fbe1ae7c15..b40b6dbc5b 100644
--- a/src/mainboard/lenovo/t420s/dsdt.asl
+++ b/src/mainboard/lenovo/t420s/dsdt.asl
@@ -20,8 +20,8 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
 #define HAVE_LCD_SCREEN 1
diff --git a/src/mainboard/lenovo/t430s/acpi_tables.c b/src/mainboard/lenovo/t430s/acpi_tables.c
index 59fc7a6a18..041e4e39b5 100644
--- a/src/mainboard/lenovo/t430s/acpi_tables.c
+++ b/src/mainboard/lenovo/t430s/acpi_tables.c
@@ -37,14 +37,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
-
 	// the lid is open by default.
 	gnvs->lids = 1;
 
diff --git a/src/mainboard/lenovo/t430s/devicetree.cb b/src/mainboard/lenovo/t430s/devicetree.cb
index af3de6c96d..23bce4e882 100644
--- a/src/mainboard/lenovo/t430s/devicetree.cb
+++ b/src/mainboard/lenovo/t430s/devicetree.cb
@@ -1,4 +1,6 @@
 chip northbridge/intel/sandybridge
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/t430s/dsdt.asl b/src/mainboard/lenovo/t430s/dsdt.asl
index fbe1ae7c15..b40b6dbc5b 100644
--- a/src/mainboard/lenovo/t430s/dsdt.asl
+++ b/src/mainboard/lenovo/t430s/dsdt.asl
@@ -20,8 +20,8 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
 #define HAVE_LCD_SCREEN 1
diff --git a/src/mainboard/lenovo/t520/acpi_tables.c b/src/mainboard/lenovo/t520/acpi_tables.c
index abb6b31286..bb0f1a444f 100644
--- a/src/mainboard/lenovo/t520/acpi_tables.c
+++ b/src/mainboard/lenovo/t520/acpi_tables.c
@@ -51,13 +51,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	// the lid is open by default.
 	gnvs->lids = 1;
diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb
index bf575d8da1..3688145887 100644
--- a/src/mainboard/lenovo/t520/devicetree.cb
+++ b/src/mainboard/lenovo/t520/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl
index fbe1ae7c15..42165a10bd 100644
--- a/src/mainboard/lenovo/t520/dsdt.asl
+++ b/src/mainboard/lenovo/t520/dsdt.asl
@@ -20,11 +20,10 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
-#define HAVE_LCD_SCREEN 1
 
 DefinitionBlock(
 	"dsdt.aml",
diff --git a/src/mainboard/lenovo/t530/acpi_tables.c b/src/mainboard/lenovo/t530/acpi_tables.c
index abb6b31286..bb0f1a444f 100644
--- a/src/mainboard/lenovo/t530/acpi_tables.c
+++ b/src/mainboard/lenovo/t530/acpi_tables.c
@@ -51,13 +51,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	// the lid is open by default.
 	gnvs->lids = 1;
diff --git a/src/mainboard/lenovo/t530/devicetree.cb b/src/mainboard/lenovo/t530/devicetree.cb
index d59524bf02..d4c5837963 100644
--- a/src/mainboard/lenovo/t530/devicetree.cb
+++ b/src/mainboard/lenovo/t530/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/t530/dsdt.asl b/src/mainboard/lenovo/t530/dsdt.asl
index fbe1ae7c15..42165a10bd 100644
--- a/src/mainboard/lenovo/t530/dsdt.asl
+++ b/src/mainboard/lenovo/t530/dsdt.asl
@@ -20,11 +20,10 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
-#define HAVE_LCD_SCREEN 1
 
 DefinitionBlock(
 	"dsdt.aml",
diff --git a/src/mainboard/lenovo/t60/acpi/video.asl b/src/mainboard/lenovo/t60/acpi/video.asl
index 1a7a596e98..31d5b0495b 100644
--- a/src/mainboard/lenovo/t60/acpi/video.asl
+++ b/src/mainboard/lenovo/t60/acpi/video.asl
@@ -20,35 +20,17 @@
 
 #include "smi.h"
 
-Device (DSPC)
+Scope (\)
 {
-	Name (_ADR, 0x00020001)
-	OperationRegion (DSPC, PCI_Config, 0x00, 0x100)
-	Field (DSPC, ByteAcc, NoLock, Preserve)
-	{
-		Offset (0xf4),
-		       BRTC, 8
-	}
-
 	Method(BRTD, 0, NotSerialized)
 	{
 		Trap(SMI_BRIGHTNESS_DOWN)
-		Store(BRTC, Local0)
-		if (LGreater (Local0, 15))
-		{
-			Subtract(Local0, 16, Local0)
-			Store(Local0, BRTC)
-		}
+		\_SB.PCI0.GFX0.DECB()
 	}
 
 	Method(BRTU, 0, NotSerialized)
 	{
 		Trap(SMI_BRIGHTNESS_UP)
-		Store (BRTC, Local0)
-		if (LLess(Local0, 0xff))
-		{
-			Add (Local0, 16, Local0)
-			Store(Local0, BRTC)
-		}
+		\_SB.PCI0.GFX0.INCB()
 	}
 }
diff --git a/src/mainboard/lenovo/t60/acpi_tables.c b/src/mainboard/lenovo/t60/acpi_tables.c
index 64b1fc6bad..4e4cf1e576 100644
--- a/src/mainboard/lenovo/t60/acpi_tables.c
+++ b/src/mainboard/lenovo/t60/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb
index 40ce3d8bdc..719fa9a38b 100644
--- a/src/mainboard/lenovo/t60/devicetree.cb
+++ b/src/mainboard/lenovo/t60/devicetree.cb
@@ -20,6 +20,9 @@
 ##
 
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_mFCPGA478
diff --git a/src/mainboard/lenovo/t60/dsdt.asl b/src/mainboard/lenovo/t60/dsdt.asl
index 92aac6ced7..b746b69f98 100644
--- a/src/mainboard/lenovo/t60/dsdt.asl
+++ b/src/mainboard/lenovo/t60/dsdt.asl
@@ -19,8 +19,8 @@
  */
 
 #define THINKPAD_EC_GPE 28
-#define BRIGHTNESS_UP \DSPC.BRTU
-#define BRIGHTNESS_DOWN \DSPC.BRTD
+#define BRIGHTNESS_UP \BRTU
+#define BRIGHTNESS_DOWN \BRTD
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 
 DefinitionBlock(
@@ -45,6 +45,12 @@ DefinitionBlock(
 	// mainboard specific devices
 	#include "acpi/mainboard.asl"
 
+	Scope (\)
+	{
+		// backlight control, display switching, lid
+		#include "acpi/video.asl"
+	}
+
 	#include <cpu/intel/model_6dx/acpi/cpu.asl>
 
 	Scope (\_SB) {
diff --git a/src/mainboard/lenovo/x200/acpi_tables.c b/src/mainboard/lenovo/x200/acpi_tables.c
index b699740b3b..fa69e7a14b 100644
--- a/src/mainboard/lenovo/x200/acpi_tables.c
+++ b/src/mainboard/lenovo/x200/acpi_tables.c
@@ -40,13 +40,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 0; /* Will use default of 0x00000400. */
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/lenovo/x200/devicetree.cb b/src/mainboard/lenovo/x200/devicetree.cb
index 09bc08f7cf..cb4a021135 100644
--- a/src/mainboard/lenovo/x200/devicetree.cb
+++ b/src/mainboard/lenovo/x200/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/gm45
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	register "gfx.use_spread_spectrum_clock" = "1"
 	register "gfx.lvds_dual_channel" = "0"
diff --git a/src/mainboard/lenovo/x200/dsdt.asl b/src/mainboard/lenovo/x200/dsdt.asl
index 432019275f..5545c94420 100644
--- a/src/mainboard/lenovo/x200/dsdt.asl
+++ b/src/mainboard/lenovo/x200/dsdt.asl
@@ -19,8 +19,8 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define DISPLAY_DEVICE_2_IS_LCD_SCREEN 1
 
diff --git a/src/mainboard/lenovo/x201/acpi_tables.c b/src/mainboard/lenovo/x201/acpi_tables.c
index 5c0d1fd776..2dd9da8b9c 100644
--- a/src/mainboard/lenovo/x201/acpi_tables.c
+++ b/src/mainboard/lenovo/x201/acpi_tables.c
@@ -33,11 +33,4 @@
 
 void acpi_create_gnvs(global_nvs_t * gnvs)
 {
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb
index f87ab1069c..8e9e0a1d32 100644
--- a/src/mainboard/lenovo/x201/devicetree.cb
+++ b/src/mainboard/lenovo/x201/devicetree.cb
@@ -20,6 +20,9 @@
 ##
 
 chip northbridge/intel/nehalem
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 
 	# Enable DisplayPort Hotplug with 6ms pulse
diff --git a/src/mainboard/lenovo/x201/dsdt.asl b/src/mainboard/lenovo/x201/dsdt.asl
index dab66e4c0a..3f5fe2ec81 100644
--- a/src/mainboard/lenovo/x201/dsdt.asl
+++ b/src/mainboard/lenovo/x201/dsdt.asl
@@ -19,11 +19,10 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
-#define HAVE_LCD_SCREEN 1
 
 DefinitionBlock(
 	"dsdt.aml",
diff --git a/src/mainboard/lenovo/x220/acpi_tables.c b/src/mainboard/lenovo/x220/acpi_tables.c
index abb6b31286..75020ff899 100644
--- a/src/mainboard/lenovo/x220/acpi_tables.c
+++ b/src/mainboard/lenovo/x220/acpi_tables.c
@@ -52,12 +52,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u1 = 0;
 
 	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	// the lid is open by default.
 	gnvs->lids = 1;
diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb
index 6eb3b1578d..28e240a07c 100644
--- a/src/mainboard/lenovo/x220/devicetree.cb
+++ b/src/mainboard/lenovo/x220/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/x220/dsdt.asl b/src/mainboard/lenovo/x220/dsdt.asl
index fbe1ae7c15..42165a10bd 100644
--- a/src/mainboard/lenovo/x220/dsdt.asl
+++ b/src/mainboard/lenovo/x220/dsdt.asl
@@ -20,11 +20,10 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
-#define HAVE_LCD_SCREEN 1
 
 DefinitionBlock(
 	"dsdt.aml",
diff --git a/src/mainboard/lenovo/x230/acpi_tables.c b/src/mainboard/lenovo/x230/acpi_tables.c
index abb6b31286..75020ff899 100644
--- a/src/mainboard/lenovo/x230/acpi_tables.c
+++ b/src/mainboard/lenovo/x230/acpi_tables.c
@@ -52,12 +52,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u1 = 0;
 
 	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	// the lid is open by default.
 	gnvs->lids = 1;
diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb
index c8274e27c1..284af85d39 100644
--- a/src/mainboard/lenovo/x230/devicetree.cb
+++ b/src/mainboard/lenovo/x230/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/lenovo/x230/dsdt.asl b/src/mainboard/lenovo/x230/dsdt.asl
index 8f5bbc02bf..8c713c7df2 100644
--- a/src/mainboard/lenovo/x230/dsdt.asl
+++ b/src/mainboard/lenovo/x230/dsdt.asl
@@ -20,11 +20,10 @@
  */
 
 #define THINKPAD_EC_GPE 17
-#define BRIGHTNESS_UP \_SB.PCI0.GFX0.LCD0.INCB
-#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.LCD0.DECB
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 #define EC_LENOVO_H8_ME_WORKAROUND 1
-#define HAVE_LCD_SCREEN 1
 
 DefinitionBlock(
 	"dsdt.aml",
diff --git a/src/mainboard/lenovo/x60/acpi/video.asl b/src/mainboard/lenovo/x60/acpi/video.asl
deleted file mode 100644
index ffb908c50c..0000000000
--- a/src/mainboard/lenovo/x60/acpi/video.asl
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (c) 2011 Sven Schnelle <svens@stackframe.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-#include "smi.h"
-
-Device (DSPC)
-{
-	Name (_ADR, 0x00020001)
-	OperationRegion (DSPC, PCI_Config, 0x00, 0x100)
-	Field (DSPC, ByteAcc, NoLock, Preserve)
-	{
-		Offset (0xf4),
-		       BRTC, 8
-	}
-
-	Method(BRTD, 0, NotSerialized)
-	{
-		Store(BRTC, Local0)
-		if (LGreater (Local0, 15))
-		{
-			Subtract(Local0, 16, Local0)
-			Store(Local0, BRTC)
-			Trap(SMI_SAVE_CMOS)
-		}
-	}
-
-	Method(BRTU, 0, NotSerialized)
-	{
-		Store (BRTC, Local0)
-		if (LLess(Local0, 0xff))
-		{
-			Add (Local0, 16, Local0)
-			Store(Local0, BRTC)
-			Trap(SMI_SAVE_CMOS)
-		}
-	}
-}
diff --git a/src/mainboard/lenovo/x60/acpi_tables.c b/src/mainboard/lenovo/x60/acpi_tables.c
index 64b1fc6bad..4e4cf1e576 100644
--- a/src/mainboard/lenovo/x60/acpi_tables.c
+++ b/src/mainboard/lenovo/x60/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/lenovo/x60/devicetree.cb b/src/mainboard/lenovo/x60/devicetree.cb
index e15f574820..a3d31a6423 100644
--- a/src/mainboard/lenovo/x60/devicetree.cb
+++ b/src/mainboard/lenovo/x60/devicetree.cb
@@ -20,6 +20,9 @@
 ##
 
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	register "gpu_hotplug" = "0x00000220"
 	register "gpu_lvds_use_spread_spectrum_clock" = "1"
diff --git a/src/mainboard/lenovo/x60/dsdt.asl b/src/mainboard/lenovo/x60/dsdt.asl
index 92aac6ced7..40e5d05502 100644
--- a/src/mainboard/lenovo/x60/dsdt.asl
+++ b/src/mainboard/lenovo/x60/dsdt.asl
@@ -18,9 +18,11 @@
  * Foundation, Inc.
  */
 
+#include "smi.h"
+
 #define THINKPAD_EC_GPE 28
-#define BRIGHTNESS_UP \DSPC.BRTU
-#define BRIGHTNESS_DOWN \DSPC.BRTD
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
 #define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
 
 DefinitionBlock(
diff --git a/src/mainboard/packardbell/ms2290/acpi/ec.asl b/src/mainboard/packardbell/ms2290/acpi/ec.asl
index 7a73a78e83..f06aba757d 100644
--- a/src/mainboard/packardbell/ms2290/acpi/ec.asl
+++ b/src/mainboard/packardbell/ms2290/acpi/ec.asl
@@ -121,12 +121,12 @@ Device(EC)
 	/* Decrease brightness.  */
 	Method(_Q1D, 0, NotSerialized)
 	{
-		\_SB.PCI0.GFX0.LCD0.DECB()
+		\_SB.PCI0.GFX0.DECB()
 	}
 	/* Increase brightness.  */
 	Method(_Q1C, 0, NotSerialized)
 	{
-		\_SB.PCI0.GFX0.LCD0.INCB()
+		\_SB.PCI0.GFX0.INCB()
 	}
 
 #include "battery.asl"
diff --git a/src/mainboard/packardbell/ms2290/acpi_tables.c b/src/mainboard/packardbell/ms2290/acpi_tables.c
index 001f488c36..73b9fff1b7 100644
--- a/src/mainboard/packardbell/ms2290/acpi_tables.c
+++ b/src/mainboard/packardbell/ms2290/acpi_tables.c
@@ -33,12 +33,5 @@
 
 void acpi_create_gnvs(global_nvs_t * gnvs)
 {
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
diff --git a/src/mainboard/packardbell/ms2290/devicetree.cb b/src/mainboard/packardbell/ms2290/devicetree.cb
index 17e1a4133f..0231b4b3db 100644
--- a/src/mainboard/packardbell/ms2290/devicetree.cb
+++ b/src/mainboard/packardbell/ms2290/devicetree.cb
@@ -20,6 +20,9 @@
 ##
 
 chip northbridge/intel/nehalem
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	register "gpu_dp_b_hotplug" = "0x04"
 	register "gpu_dp_c_hotplug" = "0x04"
diff --git a/src/mainboard/packardbell/ms2290/dsdt.asl b/src/mainboard/packardbell/ms2290/dsdt.asl
index 0911494eb1..5fb43f3899 100644
--- a/src/mainboard/packardbell/ms2290/dsdt.asl
+++ b/src/mainboard/packardbell/ms2290/dsdt.asl
@@ -18,8 +18,6 @@
  * Foundation, Inc.
  */
 
-#define HAVE_LCD_SCREEN 1
-
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
diff --git a/src/mainboard/roda/rk886ex/acpi/ec.asl b/src/mainboard/roda/rk886ex/acpi/ec.asl
index fa13bbfaa3..d033f46552 100644
--- a/src/mainboard/roda/rk886ex/acpi/ec.asl
+++ b/src/mainboard/roda/rk886ex/acpi/ec.asl
@@ -97,8 +97,8 @@ Device(EC0)
 	Method (_Q12, 0)
 	{
 		Store("_Q12: Fn-F9 (Display Switch) pressed", Debug)
+		Notify (\_SB.PCI0.GFX0, 0x82)
 		// Store(1, TLST)
-		// HKDS(10)
 	}
 
 	Method (_Q30, 0)
diff --git a/src/mainboard/roda/rk886ex/acpi/video.asl b/src/mainboard/roda/rk886ex/acpi/video.asl
deleted file mode 100644
index 1c9ccfde60..0000000000
--- a/src/mainboard/roda/rk886ex/acpi/video.asl
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2009 coresystems GmbH
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-// Brightness write
-Method (BRTW, 1, Serialized)
-{
-	// TODO
-}
-
-// Hot Key Display Switch
-Method (HKDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Lid Switch Display Switch
-Method (LSDS, 1, Serialized)
-{
-	// TODO
-}
-
-// Brightness Notification
-Method(BRTN,1,Serialized)
-{
-	// TODO (no displays defined yet)
-}
diff --git a/src/mainboard/roda/rk886ex/acpi_tables.c b/src/mainboard/roda/rk886ex/acpi_tables.c
index 64b1fc6bad..4e4cf1e576 100644
--- a/src/mainboard/roda/rk886ex/acpi_tables.c
+++ b/src/mainboard/roda/rk886ex/acpi_tables.c
@@ -36,13 +36,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/roda/rk886ex/devicetree.cb b/src/mainboard/roda/rk886ex/devicetree.cb
index a4ed87b437..589abedc9e 100644
--- a/src/mainboard/roda/rk886ex/devicetree.cb
+++ b/src/mainboard/roda/rk886ex/devicetree.cb
@@ -19,6 +19,9 @@
 ##
 
 chip northbridge/intel/i945
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
         device cpu_cluster 0 on
                 chip cpu/intel/socket_mFCPGA478
diff --git a/src/mainboard/roda/rk9/acpi_tables.c b/src/mainboard/roda/rk9/acpi_tables.c
index b699740b3b..fa69e7a14b 100644
--- a/src/mainboard/roda/rk9/acpi_tables.c
+++ b/src/mainboard/roda/rk9/acpi_tables.c
@@ -40,13 +40,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->cmap = 0x01;
 	gnvs->cmbp = 0x01;
 
-	/* IGD Displays */
-	gnvs->ndid = 0; /* Will use default of 0x00000400. */
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/roda/rk9/devicetree.cb b/src/mainboard/roda/rk9/devicetree.cb
index 2bd2358e6b..003c08eb86 100644
--- a/src/mainboard/roda/rk9/devicetree.cb
+++ b/src/mainboard/roda/rk9/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/gm45
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_BGA956
 			device lapic 0 on end
diff --git a/src/mainboard/samsung/lumpy/acpi_tables.c b/src/mainboard/samsung/lumpy/acpi_tables.c
index 8271fc7a55..0e79348000 100644
--- a/src/mainboard/samsung/lumpy/acpi_tables.c
+++ b/src/mainboard/samsung/lumpy/acpi_tables.c
@@ -80,13 +80,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	acpi_update_thermal_table(gnvs);
 
diff --git a/src/mainboard/samsung/lumpy/devicetree.cb b/src/mainboard/samsung/lumpy/devicetree.cb
index 03726141fb..a632b271ea 100644
--- a/src/mainboard/samsung/lumpy/devicetree.cb
+++ b/src/mainboard/samsung/lumpy/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"
diff --git a/src/mainboard/samsung/stumpy/acpi_tables.c b/src/mainboard/samsung/stumpy/acpi_tables.c
index 81eadd5db5..04e3bd0fb6 100644
--- a/src/mainboard/samsung/stumpy/acpi_tables.c
+++ b/src/mainboard/samsung/stumpy/acpi_tables.c
@@ -79,13 +79,6 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 1;
 	gnvs->s5u1 = 1;
 
-	/* IGD Displays */
-	gnvs->ndid = 3;
-	gnvs->did[0] = 0x80000100;
-	gnvs->did[1] = 0x80000240;
-	gnvs->did[2] = 0x80000410;
-	gnvs->did[3] = 0x80000410;
-	gnvs->did[4] = 0x00000005;
 
 	acpi_update_thermal_table(gnvs);
 
diff --git a/src/mainboard/samsung/stumpy/devicetree.cb b/src/mainboard/samsung/stumpy/devicetree.cb
index 60b112b5d1..df91a7241d 100644
--- a/src/mainboard/samsung/stumpy/devicetree.cb
+++ b/src/mainboard/samsung/stumpy/devicetree.cb
@@ -1,4 +1,7 @@
 chip northbridge/intel/sandybridge
+	# IGD Displays
+	register "gfx.ndid" = "3"
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
 
 	# Enable DisplayPort 1 Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"