only one button recognised on my trackpad

[Brett Lymn <blymn%internode.on.net@localhost>]

Folks,

I have a fujitsu lifebook S904 laptop running a recent-ish
netbsd-current.  Thanks to some recent changes I have gone from no
buttons to one button on my trackpad but I am sort of demanding and
want some more buttons.  Linux (fedora core 20-something) and windows
provide two buttons on the trackpad so it should be possible though I am
confused as to how they do it.  When I do a debug boot I see:

pms0 at pckbc1 (aux slot)
pms0: Synaptics touchpad version 8.1
pms0: synaptics_probe: Capabilities 0xd0a3.
pms0: pms_synaptics_probe_extended: Extended Buttons: 0.
pms0: pms_synaptics_probe_extended: Extended Capabilities: 0x94 0x03 0x00.
pms0: pms_synaptics_probe_extended: Continued Capabilities 0x12 0x68 0x00.
pms0: Extended W mode, Passthrough, Palm detect, One button click pad, Multi-finger Report, Multi-finger

in the dmesg.  The capabilities reported are the same as the ones linux
reports and if I decode them then, yes, I have a one button click pad
but somehow linux does two buttons, though I can't work out how from
their driver.  Anyone have any ideas?

-- 
Brett Lymn
Let go, or be dragged - Zen proverb.