SOURCES: read-edid-get-edid-ppc.sh (NEW) - NEW, finds EDID intorma...

[sparky]

Author: sparky                       Date: Thu Sep  7 13:15:33 2006 GMT
Module: SOURCES                       Tag: HEAD
---- Log message:
- NEW, finds EDID intormation on OpenFimrware on PowerPC

---- Files affected:
SOURCES:
   read-edid-get-edid-ppc.sh (NONE -> 1.1)  (NEW)

---- Diffs:

================================================================
Index: SOURCES/read-edid-get-edid-ppc.sh
diff -u /dev/null SOURCES/read-edid-get-edid-ppc.sh:1.1
--- /dev/null	Thu Sep  7 15:15:33 2006
+++ SOURCES/read-edid-get-edid-ppc.sh	Thu Sep  7 15:15:26 2006
@@ -0,0 +1,60 @@
+#!/bin/sh
+#
+# Copyright (c) 2004 Colin Watson <cjwatson at debian.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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+set -e
+
+TREE=/proc/device-tree
+
+# Apparently some 2.4 kernels put OF aliases in aliases at 0.
+if [ -d /proc/device-tree/aliases ]; then
+	ALIASES=aliases
+elif [ -d /proc/device-tree/aliases at 0 ]; then
+	ALIASES=aliases at 0
+else
+	echo "Can't find Open Firmware aliases directory" >&2
+	exit 2
+fi
+
+if [ -f "$TREE/$ALIASES/screen" ]; then
+	SCREEN="`cat $TREE/$ALIASES/screen`"
+else
+	echo "Can't find Open Firmware screen alias" >&2
+	exit 2
+fi
+
+# Aliases start with a slash.
+if [ -d "$TREE$SCREEN" ]; then
+	EDID=
+	# List gathered from files in drivers/video/ in the 2.6.7 kernel
+	# source.
+	for file in DFP,EDID LCD,EDID EDID EDID1 EDID2 EDID,B EDID,A; do
+		if [ -f "$TREE$SCREEN/$file" ]; then
+			EDID="$TREE$SCREEN/$file"
+			break
+		fi
+	done
+	if [ -z "$EDID" ]; then
+		echo "Can't find EDID file in $TREE$SCREEN" >&2
+		exit 1
+	fi
+else
+	echo "Can't find target of Open Firmware screen alias ($TREE$SCREEN)" >&2
+	exit 2
+fi
+
+cat "$EDID"
================================================================