udev: Add INPUT_TOUCHSCREEN flag to multitouch displays

udev does not add any INPUT_ flags to devices which
support only MT protocol. Without this Qt evdectouch
does not find touchscreen automatically.

Change-Id: Id298626649579450c30f04c3c282863afbfc6e08
Reviewed-by: Kalle Viironen <kalle.viironen@digia.com>

2 files changed, 32 insertions, 0 deletions

diff --git a/recipes/udev/0001-support-multitouch-screens.patch b/recipes/udev/0001-support-multitouch-screens.patch
new file mode 100644
index 0000000..aacb8e0
--- /dev/null
+++ b/recipes/udev/0001-support-multitouch-screens.patch
@@ -0,0 +1,28 @@
+From 51a9f15b10357a4ad1d8b2e50ec14031f68c0d48 Mon Sep 17 00:00:00 2001
+From: Samuli Piippo <samuli.piippo@digia.com>
+Date: Fri, 12 Apr 2013 09:41:41 +0300
+Subject: [PATCH] support multitouch screens
+
+---
+ src/udev-builtin-input_id.c |    5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/src/udev-builtin-input_id.c b/src/udev-builtin-input_id.c
+index a062ef7..0c5358e 100644
+--- a/src/udev-builtin-input_id.c
++++ b/src/udev-builtin-input_id.c
+@@ -108,8 +108,9 @@ static void test_pointers (struct udev_device *dev,
+                 return;
+         }
+ 
+-        if (test_bit (EV_ABS, bitmask_ev) &&
+-            test_bit (ABS_X, bitmask_abs) && test_bit (ABS_Y, bitmask_abs)) {
++        if (test_bit (EV_ABS, bitmask_ev) && (
++            (test_bit (ABS_X, bitmask_abs) && test_bit (ABS_Y, bitmask_abs)) ||
++            (test_bit (ABS_MT_POSITION_X, bitmask_abs) && test_bit (ABS_MT_POSITION_Y, bitmask_abs)))) {
+                 if (test_bit (BTN_STYLUS, bitmask_key) || test_bit (BTN_TOOL_PEN, bitmask_key))
+                         udev_builtin_add_property(dev, test, "ID_INPUT_TABLET", "1");
+                 else if (test_bit (BTN_TOOL_FINGER, bitmask_key) && !test_bit (BTN_TOOL_PEN, bitmask_key))
+-- 
+1.7.10.4
+
diff --git a/recipes/udev/udev_182.bbappend b/recipes/udev/udev_182.bbappend
new file mode 100644
index 0000000..564d9a1
--- /dev/null
+++ b/recipes/udev/udev_182.bbappend
@@ -0,0 +1,4 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}:"
+
+SRC_URI += "file://0001-support-multitouch-screens.patch"
+