This cleans up the identification of multitouch groups and enables
the end of group sync.

Taps are now explicitly handled to adjust for the changes in the
event stream in multitouch mode.  Added triple and quad tap for the
benefit of tools that recognize different tap types but do not have
full multi touch support.

This cleans up the behavior particularly for the latest firmware, which
didn't work particularly well with the older version of the driver.

In this form, when multitouch is active, both mt and st events will come out of
the "N-Trig MultiTouch" device.  And when its not st events will come out of
"N-Trig Touchscreen".
Signed-off-by: NRafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

With the pen and touch split apart, we no longer need to inject
additional tool switching events.
Signed-off-by: NRafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Added a quirk to enable distinct input devices.  The digitizer utilizes
three inputs to represent pen, multitouch and a normal touch screen.

With the Pen partitioned, it behaves well and does not need special
handling.

Also, I set names to the input devices to clarify the functions of the
various inputs.
Signed-off-by: NRafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Trivial patch which adds the __init and __exit macros to the module_init /
module_exit functions of several HID drivers from drivers/hid/
Signed-off-by: NPeter Huewe <peterhuewe@gmx.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

When both touch and pen are active send a tool announcement before
sending any status changes so that event users may differentiate
which tool is changing.

Restored three usage codes used by the pen.
Signed-off-by: NRafi Rubin <rafi@seas.upenn.edu>
Acked-by: NStephane Chatty <chatty@enac.fr>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Adds support for multitouch interaction on the N-Trig touchscreen, using the
new ABS_MT_* input constants. Single touch support works as previously. This
code was tested against two versions of the N- Trig firmware: one that supports
dual pen/finger single touch, and one that supports finger multitouch but no
pen at all. Copyright notices that looked wrong were removed, as it seems that
there is only code written in 2009 by Rafin Rubin and Stephane Chatty in this
file.
Signed-off-by: NStephane Chatty <chatty@enac.fr>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This removal was scheduled and there is no problem with later
distros to adapt for the new bus, thanks to aliases.

module-init-tools map files are deprecated nowadays, so that
the patch which introduced hid ones into the m-i-t won't be
accepted and hence there is no reason for leaving compat stuff in.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Added quirks for the N-Trig digitizer.
Signed-off-by: NRafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>