1 files changed, 98 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-cubox-i-3.0.35/0005-ENGR00271359-Add-Multi-touch-support.patch b/recipes-kernel/linux/linux-cubox-i-3.0.35/0005-ENGR00271359-Add-Multi-touch-support.patch
new file mode 100644
index 0000000..cb20198
--- /dev/null
+++ b/recipes-kernel/linux/linux-cubox-i-3.0.35/0005-ENGR00271359-Add-Multi-touch-support.patch
@@ -0,0 +1,98 @@
+From 538f4bb2f7a51f267395550a5be9f0ab2e426712 Mon Sep 17 00:00:00 2001
+From: Erik Boto <erik.boto@pelagicore.com>
+Date: Tue, 16 Jul 2013 12:06:05 -0500
+Subject: [PATCH] ENGR00271359 Add Multi-touch support
+Organization: O.S. Systems Software LTDA.
+
+The previous behavior of the driver did not work properly with Qt5
+QtQuick multi touch-point gestures, due to how touch-points are
+reported when removing a touch-point. My interpretation of the
+available documentation [1] was that the driver should report all
+touch-points between SYN_REPORTs, but it is not explicitly stated so.
+I've found another mail-thread [2] where the creator of the protocol
+states:
+
+"The protocol defines a generic way of sending a variable amount of
+contacts. The contact count is obtained by counting the number of
+non-empty finger packets between SYN_REPORT events."-Henrik Rydberg
+
+I think this verifies my assumption that all touch-points should be
+reported between SYN_REPORTs, otherwise it can not be used to obtain
+the count.
+
+[1] https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
+[2] http://lists.x.org/archives/xorg-devel/2010-March/006466.html
+
+Upstream-Status: Pending
+
+Signed-off-by: Erik Boto <erik.boto@pelagicore.com>
+Signed-off-by: Mahesh Mahadevan <Mahesh.Mahadevan@freescale.com>
+(cherry picked from commit 7cba001c5a502680f6dbf902821726779a9c9287)
+---
+ drivers/input/touchscreen/egalax_ts.c | 36 +++++++++++++++++------------------
+ 1 file changed, 18 insertions(+), 18 deletions(-)
+
+diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c
+index 0b6cde7..271f820 100644
+--- a/drivers/input/touchscreen/egalax_ts.c
++++ b/drivers/input/touchscreen/egalax_ts.c
+@@ -133,7 +133,6 @@ retry:
+        }
+ 
+        if (down) {
+-               /* should also report old pointers */
+                events[id].valid = valid;
+                events[id].status = down;
+                events[id].x = x;
+@@ -144,23 +143,6 @@ retry:
+                input_report_abs(input_dev, ABS_Y, y);
+                input_event(data->input_dev, EV_KEY, BTN_TOUCH, 1);
+                input_report_abs(input_dev, ABS_PRESSURE, 1);
+-#else
+-               for (i = 0; i < MAX_SUPPORT_POINTS; i++) {
+-                       if (!events[i].valid)
+-                               continue;
+-                       dev_dbg(&client->dev, "report id:%d valid:%d x:%d y:%d",
+-                               i, valid, x, y);
+-
+-                       input_report_abs(input_dev,
+-                                        ABS_MT_TRACKING_ID, i);
+-                       input_report_abs(input_dev,
+-                                        ABS_MT_TOUCH_MAJOR, 1);
+-                       input_report_abs(input_dev,
+-                                        ABS_MT_POSITION_X, events[i].x);
+-                       input_report_abs(input_dev,
+-                                        ABS_MT_POSITION_Y, events[i].y);
+-                       input_mt_sync(input_dev);
+-               }
+ #endif
+        } else {
+                dev_dbg(&client->dev, "release id:%d\n", id);
+@@ -176,6 +158,24 @@ retry:
+ #endif
+        }
+ 
++#ifndef CONFIG_TOUCHSCREEN_EGALAX_SINGLE_TOUCH
++       /* report all pointers */
++       for (i = 0; i < MAX_SUPPORT_POINTS; i++) {
++               if (!events[i].valid)
++                       continue;
++               dev_dbg(&client->dev, "report id:%d valid:%d x:%d y:%d",
++                       i, valid, x, y);
++                       input_report_abs(input_dev,
++                                ABS_MT_TRACKING_ID, i);
++               input_report_abs(input_dev,
++                                ABS_MT_TOUCH_MAJOR, 1);
++               input_report_abs(input_dev,
++                                ABS_MT_POSITION_X, events[i].x);
++               input_report_abs(input_dev,
++                                ABS_MT_POSITION_Y, events[i].y);
++               input_mt_sync(input_dev);
++       }
++#endif
+        input_sync(input_dev);
+        return IRQ_HANDLED;
+ }
+-- 
+1.8.4.rc3
+