From a89c5d34160fd16bfbc434b231200636cd0782b0 Mon Sep 17 00:00:00 2001
From: Ming Liu <ming.liu@toradex.com>
Date: Tue, 6 Sep 2022 13:56:46 +0200
Subject: weston-init: support weston touch calibration

Add a new PACKAGECONFIG touchscreen-calibration, when it's enabled,
add the following fields in weston.ini:
```
[libinput]
enable_tap=true
touchscreen_calibrator=true
calibration_helper=/usr/bin/toradex-save-touchscreen-calibration
```

When weston-touch-calibrator is called by an end user,
/usr/bin/toradex-save-touchscreen-calibration will be triggered to
create a udev rule to export LIBINPUT_CALIBRATION_MATRIX then trigger
that udev rule. The end users need to restart weston to let the new
calibration matrix to take effect.

Related-to: ELB-4570

Signed-off-by: Ming Liu <ming.liu@toradex.com>
---
 recipes-graphics/wayland/weston-init.bbappend         | 19 +++++++++++++++++++
 .../toradex-save-touchscreen-calibration.sh           | 11 +++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 recipes-graphics/wayland/weston-init.bbappend
 create mode 100755 recipes-graphics/wayland/weston-init/toradex-save-touchscreen-calibration.sh

diff --git a/recipes-graphics/wayland/weston-init.bbappend b/recipes-graphics/wayland/weston-init.bbappend
new file mode 100644
index 0000000..7a385c0
--- /dev/null
+++ b/recipes-graphics/wayland/weston-init.bbappend
@@ -0,0 +1,19 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"
+
+SRC_URI += "file://toradex-save-touchscreen-calibration.sh"
+
+PACKAGECONFIG[touchscreen-calibration] = ",,"
+PACKAGECONFIG:append:tdx = " touchscreen-calibration"
+
+INI_UNCOMMENT_ASSIGNMENTS:append:tdx = " \
+    \\[libinput\\] \
+    enable_tap=true \
+"
+
+do_install:append:tdx() {
+    if [ "${@bb.utils.contains('PACKAGECONFIG', 'touchscreen-calibration', 'yes', 'no', d)}" = "yes" ]; then
+        sed -i -e "/^\[libinput\]/a calibration_helper=${bindir}/toradex-save-touchscreen-calibration" ${D}${sysconfdir}/xdg/weston/weston.ini
+        sed -i -e "/^\[libinput\]/a touchscreen_calibrator=true" ${D}${sysconfdir}/xdg/weston/weston.ini
+        install -Dm0755 ${WORKDIR}/toradex-save-touchscreen-calibration.sh ${D}${bindir}/toradex-save-touchscreen-calibration
+    fi
+}
diff --git a/recipes-graphics/wayland/weston-init/toradex-save-touchscreen-calibration.sh b/recipes-graphics/wayland/weston-init/toradex-save-touchscreen-calibration.sh
new file mode 100755
index 0000000..e2871fc
--- /dev/null
+++ b/recipes-graphics/wayland/weston-init/toradex-save-touchscreen-calibration.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ "$#" -ne 7 ]; then
+	echo "This script is to be called by weston with new touch calibration data, it requires 7 parameters."
+	exit 1
+fi
+
+echo 'ACTION=="add|change", SUBSYSTEM=="input", KERNEL=="event[0-9]*", ENV{ID_INPUT_TOUCHSCREEN}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}=''"'"$2 $3 $4 $5 $6 $7"'"' > /etc/udev/rules.d/libinput.rules
+
+# Make udev process the new rule by triggering a "change" event:
+udevadm trigger "$1"
-- 
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