evdev 2.2.1

Remember whether ABS_X or ABS_Y were reported before the SYN event and only
update the old_vals[0, 1] if we got data for them.
Touchpads that reported pressure data before x/y would otherwise update
old_x/y with bogus values, leading to jumps when the first x/y coordinates
were actually reported.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit d9809d7edd)

configure.ac

@@ -22,7 +22,7 @@
 
 AC_PREREQ(2.57)
 AC_INIT([xf86-input-evdev],
-        2.1.99.1,
+        2.2.1,
         [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg],
         xf86-input-evdev)
 

src/evdev.c

@@ -263,8 +263,17 @@ PostKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value)
     static char warned[KEY_CNT];
 
     /* Filter all repeated events from device.
-       We'll do softrepeat in the server */
-    if (value == 2)
+       We'll do softrepeat in the server, but only since 1.6 */
+    if (value == 2
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) <= 2
+        && (ev->code == KEY_LEFTCTRL || ev->code == KEY_RIGHTCTRL ||
+            ev->code == KEY_LEFTSHIFT || ev->code == KEY_RIGHTSHIFT ||
+            ev->code == KEY_LEFTALT || ev->code == KEY_RIGHTALT ||
+            ev->code == KEY_LEFTMETA || ev->code == KEY_RIGHTMETA ||
+            ev->code == KEY_CAPSLOCK || ev->code == KEY_NUMLOCK ||
+            ev->code == KEY_SCROLLLOCK) /* XXX windows keys? */
+#endif
+            )
 	return;
 
     if (code > 255)
@@ -333,6 +342,9 @@ EvdevReopenTimer(OsTimerPtr timer, CARD32 time, pointer arg)
     return 100; /* come back in 100 ms */
 }
 
+#define ABS_X_VALUE 0x1
+#define ABS_Y_VALUE 0x2
+#define ABS_VALUE   0x4
 /**
  * Take one input event and process it accordingly.
  */
@@ -383,7 +395,12 @@ EvdevProcessEvent(InputInfoPtr pInfo, struct input_event *ev)
             if (ev->code > ABS_MAX)
                 break;
             pEvdev->vals[pEvdev->axis_map[ev->code]] = value;
-            abs = 1;
+            if (ev->code == ABS_X)
+                abs |= ABS_X_VALUE;
+            else if (ev->code == ABS_Y)
+                abs |= ABS_Y_VALUE;
+            else
+                abs |= ABS_VALUE;
             break;
 
         case EV_KEY:
@@ -434,17 +451,20 @@ EvdevProcessEvent(InputInfoPtr pInfo, struct input_event *ev)
         case EV_SYN:
             /* convert to relative motion for touchpads */
             if (abs && (pEvdev->flags & EVDEV_TOUCHPAD)) {
-                abs = 0;
                 if (pEvdev->tool) { /* meaning, touch is active */
                     if (pEvdev->old_vals[0] != -1)
                         delta[REL_X] = pEvdev->vals[0] - pEvdev->old_vals[0];
                     if (pEvdev->old_vals[1] != -1)
                         delta[REL_Y] = pEvdev->vals[1] - pEvdev->old_vals[1];
-                    pEvdev->old_vals[0] = pEvdev->vals[0];
-                    pEvdev->old_vals[1] = pEvdev->vals[1];
+                    if (abs & ABS_X_VALUE)
+                        pEvdev->old_vals[0] = pEvdev->vals[0];
+                    if (abs & ABS_Y_VALUE)
+                        pEvdev->old_vals[1] = pEvdev->vals[1];
                 } else {
                     pEvdev->old_vals[0] = pEvdev->old_vals[1] = -1;
                 }
+                abs = 0;
+                rel = 1;
             }
 
             if (rel) {
@@ -527,6 +547,10 @@ EvdevProcessEvent(InputInfoPtr pInfo, struct input_event *ev)
     }
 }
 
+#undef ABS_X_VALUE
+#undef ABS_Y_VALUE
+#undef ABS_VALUE
+
 /* just a magic number to reduce the number of reads */
 #define NUM_EVENTS 16
 
@@ -1126,12 +1150,17 @@ EvdevInitButtonMapping(InputInfoPtr pInfo)
 static int
 EvdevInit(DeviceIntPtr device)
 {
+    int i;
     InputInfoPtr pInfo;
     EvdevPtr pEvdev;
 
     pInfo = device->public.devicePrivate;
     pEvdev = pInfo->private;
 
+    /* clear all axis_map entries */
+    for(i = 0; i < max(ABS_CNT,REL_CNT); i++)
+      pEvdev->axis_map[i]=-1;
+
     if (pEvdev->flags & EVDEV_KEYBOARD_EVENTS)
 	EvdevAddKeyClass(device);
     if (pEvdev->flags & EVDEV_BUTTON_EVENTS)
@@ -1462,9 +1491,9 @@ EvdevProbe(InputInfoPtr pInfo)
         TestBit(ABS_Y, pEvdev->abs_bitmask)) {
         xf86Msg(X_INFO, "%s: Found x and y absolute axes\n", pInfo->name);
         pEvdev->flags |= EVDEV_ABSOLUTE_EVENTS;
-        if (!TestBit(ABS_PRESSURE, pEvdev->abs_bitmask) &&
-             TestBit(BTN_TOUCH, pEvdev->key_bitmask)) {
-            if (num_buttons) {
+        if (TestBit(ABS_PRESSURE, pEvdev->abs_bitmask) ||
+            TestBit(BTN_TOUCH, pEvdev->key_bitmask)) {
+            if (num_buttons || TestBit(BTN_TOOL_FINGER, pEvdev->key_bitmask)) {
                 xf86Msg(X_INFO, "%s: Found absolute touchpad\n", pInfo->name);
                 pEvdev->flags |= EVDEV_TOUCHPAD;
                 memset(pEvdev->old_vals, -1, sizeof(int) * pEvdev->num_vals);
@@ -1490,7 +1519,10 @@ EvdevProbe(InputInfoPtr pInfo)
     if (has_axes && num_buttons) {
         pInfo->flags |= XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS |
                         XI86_CONFIGURED;
-        if (TestBit(ABS_PRESSURE, pEvdev->abs_bitmask)) {
+	if (pEvdev->flags & EVDEV_TOUCHPAD) {
+	    xf86Msg(X_INFO, "%s: Configuring as touchpad\n", pInfo->name);
+	    pInfo->type_name = XI_TOUCHPAD;
+	} else if (TestBit(ABS_PRESSURE, pEvdev->abs_bitmask)) {
 	    xf86Msg(X_INFO, "%s: Configuring as tablet\n", pInfo->name);
 	    pInfo->type_name = XI_TABLET;
 	} else {