Add vga_switcheroo option

0001-Add-vga_switcheroo-options.patch (text/plain), 1.28 KB, created by Kirill Elagin on 2011-08-31 21:05:16 UTC

From 9aea6114011606582a6a1adb1a0945a1f1d52f92 Mon Sep 17 00:00:00 2001
From: Kirill Elagin <[e-mail]>
Date: Thu, 1 Sep 2011 00:14:05 +0400
Subject: [PATCH] Add vga_switcheroo options

---
 defaults/linuxrc |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/defaults/linuxrc b/defaults/linuxrc
index 7aa11e3..b5f088a 100755
--- a/defaults/linuxrc
+++ b/defaults/linuxrc
@@ -246,6 +246,10 @@ do
 #                                 fi 	 
 #                         fi 	 
 #                 ;;
+        # vga_switcheroo
+		vga_switcheroo\=*)
+			VGA_SWITCHEROO=`parse_opt "${x}"`
+		;;
 	esac
 done
 
@@ -285,6 +289,25 @@ else
 	good_msg 'Skipping module load; no modules in the ramdisk!'
 fi
 
+# Issue vga_switcheroo commands
+if [ -n "$VGA_SWITCHEROO" ]
+then
+    local SWITCH_PATH="/sys/kernel/debug/vgaswitcheroo/switch"
+    mount -t debugfs none /sys/kernel/debug || bad_msg "Couldn't mount debugfs!"
+    if [ ! -f "$SWITCH_PATH" ]
+    then
+        warn_msg "vga_switcheroo is not initialized!"
+    else
+        local IFS=","
+        for c in $VGA_SWITCHEROO
+        do
+            good_msg "Echoing \"$c\" to $SWITCH_PATH"
+            echo "$c" > $SWITCH_PATH
+        done
+    fi
+fi
+
+
 # Apply scan delay if specified
 sdelay
 
-- 
1.7.3.4