Originally Posted by Matan

MCE controls practically everything on the device:

Code:

N900:/usr/lib/mce# ls /usr/lib/mce/modules/
libaccelerometer.so             libcallstate.so                 libfilter-brightness-simple.so  libled.so
libalarm.so                     libcamera.so                    libhomekey.so                   libvibrator.so
libaudiorouting.so              libdisplay.so                   libinactivity.so
libbattery.so                   libfilter-brightness-als.so     libkeypad.so

It probably even controls stuff that is not there. I wonder what libhomekey.so does.

Its interface with everything else is completely undocumented. It will take a lot of reverse engineering to replace it.