New touchscreen calibration script

Supports calibration in all 4 directions. Screen rotation is
implemented using LIBINPUT_CALIBRATION_MATRIX property instead of
tslib because tslib rotation is buggy

see Openvario#17 (comment)

recipes-apps/ovmenu-ng-skripts/files/ov-calibrate-ts.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+ROT=`cat /sys/class/graphics/fbcon/rotate`
+
+# Perform the calibration
+TSLIB_TSDEVICE=/dev/input/touchscreen0 ts_calibrate -r $ROT
+
+echo "Applying the libinput calibration matrix according to current rotation ($ROT)"
+case $ROT in
+    0) ROTMATRIX="1 0 0 0 1 0" ;;
+    1) ROTMATRIX="0 1 0 -1 0 1" ;;
+    2) ROTMATRIX="-1 0 1 0 -1 1" ;;
+    3) ROTMATRIX="0 -1 1 1 0 0" ;;
+esac
+
+echo "ENV{LIBINPUT_CALIBRATION_MATRIX}=\"$ROTMATRIX\"" > /etc/udev/rules.d/libinput-ts.rules
+udevadm control --reload
+udevadm trigger
+
+echo Restart ts_uinput
+systemctl restart ts_uinput

recipes-apps/ovmenu-ng-skripts/ovmenu-ng-skripts_0.1.bb

@@ -20,6 +20,7 @@ SRC_URI =      "\
 	file://upload-all.sh \
 	file://upload-xcsoar.sh \
 	file://download-all.sh \
+	file://ov-calibrate-ts.sh \
 "
 
 
@@ -39,6 +40,7 @@ do_install() {
 		install -m 0755 ${S}/upload-all.sh ${D}/usr/bin/upload-all.sh
 		install -m 0755 ${S}/upload-xcsoar.sh ${D}/usr/bin/upload-xcsoar.sh
 		install -m 0755 ${S}/download-all.sh ${D}/usr/bin/download-all.sh
+		install -m 0755 ${S}/ov-calibrate-ts.sh ${D}/usr/bin/ov-calibrate-ts.sh
 }
 
 FILES_${PN} = "/usr/bin/xcsoar_config.sh \
@@ -48,4 +50,5 @@ FILES_${PN} = "/usr/bin/xcsoar_config.sh \
 				/usr/bin/upload-all.sh \
 				/usr/bin/download-all.sh \
 				/usr/bin/upload-xcsoar.sh \
+				/usr/bin/ov-calibrate-ts.sh \
 "

recipes-apps/ovmenu-ng/files/openvario-43-rgb/ovmenu-ng.sh

@@ -302,10 +302,8 @@ function calibrate_sensors() {
 
 function calibrate_touch() {
 	echo "Calibrating Touch ..." >> /tmp/tail.$$
-	# reset touch calibration
-	# uboot rotation
-	ts_calibrate -r $(cat /sys/class/graphics/fbcon/rotate)
-	dialog --msgbox "Calibration OK !!\nPlease reboot to apply !!" 10 50
+	/usr/bin/ov-calibrate-ts.sh >> /tmp/tail.$$
+	dialog --msgbox "Calibration OK!" 10 50
 }
 
 # Copy /usb/usbstick/openvario/maps to /home/root/.xcsoar

recipes-apps/ovmenu-ng/files/openvario-57-lvds/ovmenu-ng.sh

@@ -302,10 +302,8 @@ function calibrate_sensors() {
 
 function calibrate_touch() {
 	echo "Calibrating Touch ..." >> /tmp/tail.$$
-	# reset touch calibration
-	# uboot rotation
-	ts_calibrate -r $(cat /sys/class/graphics/fbcon/rotate)
-	dialog --msgbox "Calibration OK !!\nPlease reboot to apply !!" 10 50
+	/usr/bin/ov-calibrate-ts.sh >> /tmp/tail.$$
+	dialog --msgbox "Calibration OK!" 10 50
 }
 
 # Copy /usb/usbstick/openvario/maps to /home/root/.xcsoar

recipes-apps/ovmenu-ng/files/openvario-7-CH070/ovmenu-ng.sh

@@ -302,10 +302,8 @@ function calibrate_sensors() {
 
 function calibrate_touch() {
 	echo "Calibrating Touch ..." >> /tmp/tail.$$
-	# reset touch calibration
-	# uboot rotation
-	ts_calibrate -r $(cat /sys/class/graphics/fbcon/rotate)
-	dialog --msgbox "Calibration OK !!\nPlease reboot to apply !!" 10 50
+	/usr/bin/ov-calibrate-ts.sh >> /tmp/tail.$$
+	dialog --msgbox "Calibration OK!" 10 50
 }
 
 # Copy /usb/usbstick/openvario/maps to /home/root/.xcsoar

recipes-apps/ovmenu-ng/files/openvario-7-PQ070/ovmenu-ng.sh

@@ -302,10 +302,8 @@ function calibrate_sensors() {
 
 function calibrate_touch() {
 	echo "Calibrating Touch ..." >> /tmp/tail.$$
-	# reset touch calibration
-	# uboot rotation
-	ts_calibrate -r $(cat /sys/class/graphics/fbcon/rotate)
-	dialog --msgbox "Calibration OK !!\nPlease reboot to apply !!" 10 50
+	/usr/bin/ov-calibrate-ts.sh >> /tmp/tail.$$
+	dialog --msgbox "Calibration OK!" 10 50
 }
 
 # Copy /usb/usbstick/openvario/maps to /home/root/.xcsoar