Here's a fix that makes ALPS touchpads work with the latest versions of
xf86-input-synaptics.
The problem is that the pms(4) driver doesn't send a finger width value
(because none are reported) leaving the number of pressing fingers to 0.
And since the xf86-input-synaptics commit 3822705, if the number of
pressing fingers is different than 0 the packet counter is reset leading
to an always-0 packet count.
This diff generate a width value corresponding to one finger when
the pressure value is non-null, fixing the above mentioned problem.
Ok?
Martin
Index: pms.c
===================================================================
RCS file: /cvs/src/sys/dev/pckbc/pms.c,v
retrieving revision 1.29
diff -u -p -r1.29 pms.c
--- pms.c 28 Apr 2012 09:43:24 -0000 1.29
+++ pms.c 29 Jun 2012 13:31:13 -0000
@@ -1281,7 +1281,7 @@ void
pms_proc_alps(struct pms_softc *sc)
{
struct alps_softc *alps = sc->alps;
- int x, y, z, dx, dy;
+ int x, y, z, w, dx, dy;
u_int buttons;
int fin, ges;
@@ -1329,9 +1329,13 @@ pms_proc_alps(struct pms_softc *sc)
if (ges && fin && !alps->old_fin)
z = 0;
- wsmouse_input(sc->sc_wsmousedev, buttons, x, y, z, 0,
+ /* Generate a width value corresponding to one finger */
+ if (z > 0)
+ w = 4;
+
+ wsmouse_input(sc->sc_wsmousedev, buttons, x, y, z, w,
WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y |
- WSMOUSE_INPUT_ABSOLUTE_Z);
+ WSMOUSE_INPUT_ABSOLUTE_Z | WSMOUSE_INPUT_ABSOLUTE_W);
alps->old_fin = fin;
} else {
