ok,
after i remember the kbdd-driver and some search here
i found a mapped kbdd for the bgp-100

its quite old but works out of the box
just download it, here(thx to mlvj)
and:
Pair the Gamepad
in Xterm@root:
hcitools scan #for the btaddr
rfcomm bind {btaddr} 1
kbdd -t bgp100 -p /dev/rfcomm1

Fanoush did some scripting for the kbdd
i take a look at it after my newyear holidays