I've compiled the newest version of your module on FC11 x64, using this laptop, and absolutely nothing works with it. I've tried ectypes 0 through 15, thankfully I haven't gotten any major problems attempting to insert or remove the module in these cases.
ectype=11 is what gives me the most entries but none of them work. /proc/omnibook/ac displays "off-line" and all ectypes either display "fan is off" or "fan is on (level 15)" for /proc/omnibook/fan. My laptop has a v1.90 Phoenix BIOS if that helps.
Attaching dsdt file which I copied from /proc/acpi directory. Let me know if there's anything else you want.