code question on pc87360 module

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folks,

Im working on a gpio driver for pc87366, and having trouble
writing to the pins - reading is fine - im seeing what I expect,
and can read results of touching pins to ground (theyre pulled hi when open)

So im trying to grok what Im missing by looking at pc87360,
particularly, I was looking for ioremap() calls that might explain the 
no-write
to 0x6600-2f (SIO writes work).

soekris:~# modprobe pc87360
pc87360: Device 0x09 not activated
pc87360 0-6620: VLM conversion set to1s period, 160us delay
soekris:~#
soekris:~# more /proc/ioports |grep pc87360
6620-662f : pc87360
6640-664f : pc87360

the last 2 lines arent there until modprobed, but I cant find where/how 
they're
inserted - I grepped all i2c code for an ioremap, theyre all in i2c/busses/,
none of which appear to match these modules, or the objects which 
comprise them.

i2c_sensor              4480  1 pc87360
i2c_isa                 2304  0
i2c_core               23696  3 pc87360,i2c_sensor,i2c_isa

anybody got a clue for the needy ?






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