I updated my driver for the Elantech touchpad. Changes include:
- Absolute mode reporting is now working on my laptop.

- Fixed the use of a wrong constant in the Synaptics Identify query

- Added Synaptics Modes query as newer versions of the Windows Elantech

  driver seem to try that query too.

- Make an educated guess bases on the Synaptics Capabilities query whether

  middle mouse button reporting works and how finger taps are reported.

- Added a debug option.
Testers are still very much wanted and encouraged to give feedback.
For people that are reading the mailing list via a web interface:

I've made the patches available for download and provided some extra

information at http://arjan.opmeer.net/elantech
Arjan
---

diff -purN -X linux-2.6.23.1.vanilla/Documentation/dontdiff linux-2.6.23.1.vanilla/Documentation/input/elantech.txt linux-2.6.23.1.elantech/Documentation/input/elantech.txt

--- linux-2.6.23.1.vanilla/Documentation/input/elantech.txt	1970-01-01 01:00:00.000000000 +0100

+++ linux-2.6.23.1.elantech/Documentation/input/elantech.txt	2007-10-22 04:56:15.000000000 +0200

@@ -0,0 +1,172 @@

+Elantech Touchpad Driver

+========================

+        Copyright (C) 2007 Arjan Opmeer <arjan@opmeer.net>

+

+        Extra information found and provided by Steve Havelka

+

+Configuration of the touchpad is performed by writing values to registers

+found under sysfs entries /sys/bus/serio/drivers/psmouse/serio?/reg_*.

+

+E.g. to disable tapping while leaving the other settings to the default

+Windows driver value one would:

+

+   echo -n 0x32 > reg_10

+

+

+Registers

+~~~~~~~~~

+

+* reg_10        (Windows driver default value 0x12)

+

+   bit   7   6   5   4   3   2   1   0

+         B   C   T   D   L   A   S   E

+

+         E: 1 = enable smart edges in other cases

+         S: 1 = enable smart edges only when dragging

+         A: 1 = absolute mode (needs 4 byte packets, see reg_11)

+         L: 1 = enable drag lock (see reg_22)

+         D: 1 = disable...
[ message continues ]

Do not move protocol constants around as they are exported to

userspace. New protocols should go to the end of the list

(right in front of PSMOUSE_AUTO).
Thanks. 
--

Dmitry

-

From Arjan Opmeer <arjan@opmeer.net>
Update to the Elantech touchpad driver. Changes include:
- Absolute mode reporting is now working on my laptop.

- Fixed the use of a wrong constant in the Synaptics Identify query

- Added Synaptics Modes query as newer versions of the Windows Elantech

  driver seem to try that query too.

- Make an educated guess bases on the Synaptics Capabilities query whether

  middle mouse button reporting works and how finger taps are reported.

- Added a debug option.
Signed-off-by: Arjan Opmeer <arjan@opmeer.net>
---

diff -purN -X linux-2.6.23-mm1.vanilla/Documentation/dontdiff linux-2.6.23-mm1.vanilla/Documentation/input/elantech.txt linux-2.6.23-mm1.elantech/Documentation/input/elantech.txt

--- linux-2.6.23-mm1.vanilla/Documentation/input/elantech.txt	2007-10-22 05:24:20.000000000 +0200

+++ linux-2.6.23-mm1.elantech/Documentation/input/elantech.txt	2007-10-22 05:24:55.000000000 +0200

@@ -1,68 +1,75 @@

 Elantech Touchpad Driver

 ========================

-	Copyright (C) 2007 Arjan Opmeer <arjan@opmeer.net>

+        Copyright (C) 2007 Arjan Opmeer <arjan@opmeer.net>
+        Extra information found and provided by Steve Havelka
-Configuration of the touchpad is performed by writing register values to the

-corresponding sysfs entries found under /sys/bus/serio/drivers/psmouse/serioX

+Configuration of the touchpad is performed by writing values to registers

+found under sysfs entries /sys/bus/serio/drivers/psmouse/serio?/reg_*.

+

+E.g. to disable tapping while leaving the other settings to the default

+Windows driver value one would:

+

+   echo -n 0x32 > reg_10
 Registers

----------

+~~~~~~~~~
-* reg_10	(Windows driver default value 0x12)

+* reg_10        (Windows driver default value 0x12)
    bit   7   6   5   4   3   2   1   0

-         0   C   T   D   L   R   S   E

+         B   C   T   D   L   A   S   E
          E: 1 = enable smart edges in other cases

          S: 1 = enable smart edges only ...
[ message continues ]