keymap: handle atkbd force_release quirk

Some laptop keyboards don't generate release events
for some hotkeys.  Since linux-2.6.32 the list of scancodes
for which to enable the force_release quirk can be set
via sysfs.
Apply this to Samsung N130.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Martin Pitt <martin.pitt@ubuntu.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/extras/keymap/keyboard-force-release.sh b/extras/keymap/keyboard-force-release.sh
new file mode 100644
index 0000000000..b157ac310d
--- /dev/null
+++ b/extras/keymap/keyboard-force-release.sh
@@ -0,0 +1,22 @@
+#!/bin/sh -e
+# read list of scancodes, convert hex to decimal and
+# append to the atkbd force_release sysfs attribute
+# $1 sysfs devpath for serioX
+# $2 file with scancode list (hex or dec)
+
+case "$2" in
+	/*) scf="$2" ;;
+	*)  scf="/lib/udev/keymaps/force-release/$2" ;;
+esac
+
+read attr <"/sys/$1/force_release"
+while read scancode dummy; do
+	case "$scancode" in
+		\#*) ;;
+		*)
+			scancode=$(($scancode))
+			attr="$attr${attr:+,}$scancode"
+			;;
+	esac
+done <"$scf"
+echo "$attr" >"/sys/$1/force_release"