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>

4 files changed, 4 insertions, 52 deletions

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