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    SubjectRe: [PATCH 1/4] Input: synaptics - add multitouch packet support
    On Sat, Dec 18, 2010 at 10:55 AM, Chris Bagwell <> wrote:
    > On Sat, Dec 18, 2010 at 8:52 AM, Henrik Rydberg <> wrote:
    >> From: Chase Douglas <>
    >> Synaptics 2.7 series of touchpads support a mode for reporting 2 sets
    >> of X/Y/Pressure data (multi-touch).  These same devices default mode
    >> report single finger data and do not report finger counts.
    >> Enabling MT mode makes finger count reporting start working in same
    >> fashion as touchpads that claim that capability. Up to three fingers
    >> can be reported this way.
    >> While in MT mode and two or three fingers are touching, two sets of
    >> data are sent.  The first is a new format buffer with lower resolution
    >> reporting of stationary finger and the second is standard data format
    >> reporting movement.
    > We should probably update this comment and remove parts that mention
    > stationary and movement.  It appears to be doing finger tracking and
    > first packet is always first touch... except we are getting reports
    > that clickpads/integrated button pads may not be consistently like
    > this.

    Sorry. Not first packet but higher resolution/second packet.

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