[OE-core] [PATCH] Revert "libinput: remove obsolete touchpad patch"

[Jose Alarcon]

This reverts commit 9f32d9405ed5430e9e55de2f1562baac963e807c.

This patch is still needed since OLDEST_KERNEL is set to 3.2.0

Signed-off-by: Jose Alarcon <jose.alarcon at ge.com>
---
 ...ics-need-to-fake-new-touches-on-TRIPLETAP.patch | 72 ++++++++++++++++++++++
 meta/recipes-graphics/wayland/libinput_1.8.1.bb    |  1 +
 2 files changed, 73 insertions(+)
 create mode 100644 meta/recipes-graphics/wayland/libinput/touchpad-serial-synaptics-need-to-fake-new-touches-on-TRIPLETAP.patch

diff --git a/meta/recipes-graphics/wayland/libinput/touchpad-serial-synaptics-need-to-fake-new-touches-on-TRIPLETAP.patch b/meta/recipes-graphics/wayland/libinput/touchpad-serial-synaptics-need-to-fake-new-touches-on-TRIPLETAP.patch
new file mode 100644
index 0000000..b52b496
--- /dev/null
+++ b/meta/recipes-graphics/wayland/libinput/touchpad-serial-synaptics-need-to-fake-new-touches-on-TRIPLETAP.patch
@@ -0,0 +1,72 @@
+This is a workaround upstream suggests for use with kernel 4.1.
+
+Upstream-Status: Inappropriate [temporary work-around]
+Signed-off-by: Jussi Kukkonen <jussi.kukkonen at intel.com>
+
+
+
+From: Peter Hutterer <peter.hutterer at who-t.net>
+Date: Mon Aug 3 18:23:12 PDT 2015
+Subject: [PATCH v3 libinput] touchpad: serial synaptics need to fake new touches on TRIPLETAP
+
+On the 4.1 kernels synaptics pretends to have 3 slots (the serial fw only does
+2). This was added to avoid cursor jumps but has since been reverted for 4.2
+(kernel commit dbf3c37086, 4.1.3 is still buggy). In some cases a TRIPLETAP
+may be triggered without slot 2 ever activating.
+
+While there are still those kernels out there, work around this bug by opening
+a new touch point where none exists if the fake finger count exceeds the slot
+count.
+
+Reported-by: Jan Alexander Steffens <jan.steffens at gmail.com>
+Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
+Tested-by: Jan Alexander Steffens <jan.steffens at gmail.com>
+Reviewed-by: Hans de Goede <hdegoede at redhat.com>
+---
+Changes to v2:
+- split out the handling instead of having a tmp state variable, see Hans'
+  comments from v2
+
+Mainly sending this to the list again so I have a link to point people to.
+If you're on 4.1.x add this patch to your distribution package.
+
+ src/evdev-mt-touchpad.c | 22 ++++++++++++++++------
+ 1 file changed, 16 insertions(+), 6 deletions(-)
+
+diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
+index a683d9a..5ef03d5 100644
+--- a/src/evdev-mt-touchpad.c
++++ b/src/evdev-mt-touchpad.c
+@@ -369,13 +369,23 @@ tp_restore_synaptics_touches(struct tp_dispatch *tp,
+ 	for (i = 0; i < tp->num_slots; i++) {
+ 		struct tp_touch *t = tp_get_touch(tp, i);
+ 
+-		if (t->state != TOUCH_END)
++		switch(t->state) {
++		case TOUCH_HOVERING:
++		case TOUCH_BEGIN:
++		case TOUCH_UPDATE:
+ 			continue;
+-
+-		/* new touch, move it through begin to update immediately */
+-		tp_new_touch(tp, t, time);
+-		tp_begin_touch(tp, t, time);
+-		t->state = TOUCH_UPDATE;
++		case TOUCH_NONE:
++			/* new touch, move it through to begin immediately */
++			tp_new_touch(tp, t, time);
++			tp_begin_touch(tp, t, time);
++			break;
++		case TOUCH_END:
++			/* touch just ended ,we need need to restore it to update */
++			tp_new_touch(tp, t, time);
++			tp_begin_touch(tp, t, time);
++			t->state = TOUCH_UPDATE;
++			break;
++		}
+ 	}
+ }
+ 
+-- 
+2.4.3
+
diff --git a/meta/recipes-graphics/wayland/libinput_1.8.1.bb b/meta/recipes-graphics/wayland/libinput_1.8.1.bb
index a21babe..f75298b 100644
--- a/meta/recipes-graphics/wayland/libinput_1.8.1.bb
+++ b/meta/recipes-graphics/wayland/libinput_1.8.1.bb
@@ -8,6 +8,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=2184aef38ff137ed33ce9a63b9d1eb8f"
 DEPENDS = "libevdev udev mtdev"
 
 SRC_URI = "http://www.freedesktop.org/software/${BPN}/${BP}.tar.xz \
+           file://touchpad-serial-synaptics-need-to-fake-new-touches-on-TRIPLETAP.patch \
            file://0001-tools-Fix-race-in-autotools-install.patch \
 "
 
-- 
2.10.1