Hi Paul,

On Tuesday 02 June 2009 12:47:59 pgf@laptop.org wrote:

The OLPC XO laptop incorporates a combination touchpad/tablet
device which unfortunately requires frequent recalibration.  The
driver will force this automatically when various suspicious
behaviors are observed, and the user can recalibrate manually
(with a special keyboard sequence).  There's currently no way,
however, for an external program to cause recalibration.

This patch creates a new node in /sys which, when written with '1',
will force a touchpad recalibration.  No other writes (or reads)
of this node are supported.

Instead of creating a new sysfs attribute maybe we should make
the touchpad recalibrate upon resume (reconnect)? Userspace can
already request reconnect via sysfs.
 
-- 
Dmitry