multitouch and synaptics clickpad questions

[Daniel Kurtz]

Back in October Chase Douglas [1] kicked off a flurry of patches and
discussions on this mailing list about adding Clickpad support, and/or some
form of multitouch gesture processing (what little is possible with
Synaptics Advanced Gesture Mode) to the xf86-input-synaptics driver (and/or
the kernel).  The patches were commented upon, and rehashed a little... but
now everything seems to have died down - and, as far as I can tell, nothing
has yet been accepted into xf86-input-synaptics upstream.

[1] Starting with this:
http://lists.x.org/archives/xorg-devel/2010-October/013809.html

As a result of this work, in late December Henrik Rydberg submitted a patch
[2] to linux-input, based on the discussions above, which added semi-mt
support to the synaptics kernel driver.  This patch, too, though, has not
yet been accepted upstream.

[2] https://patchwork.kernel.org/patch/426561/


   1. What is the status of the kernel driver patches?
   2. What is the status of the effort to use them from user space?
      1. Are patches still being reviewed/tested/worked on for
      xf86-input-synaptics to use Synaptics AGM to improve clickpad performance?
      2. Was a decision made to not bother with xf86-input-synaptics, and
      instead to focus only on mtdev & xf86-input-multitouch?
      3. Is semi-mt supported in mtdev?
   3. What is the status of xf86-input-multitouch, anyway?  It doesn't
   appear to be an "official" X input driver, supported and maintained, for
   example, by this mailing list.
   4. And what about utouch?
      1. Is that replacing mtdev/xf86-input-multitouch?
      2. Is it Ubuntu specific?
      3. Or is it being merged into the X.org / Xinput2 system?
      4. Or will it live as an independent but cooperative userspace
      component of an X system?

Sorry for jumping in, late to the party, and asking so many potentially
off-topic questions to the mailing list at large.  I'm more than happy to
post elsewhere if more appropriate.  This just seems like a good place to
start.

Thanks,
-Daniel
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