[dev-tools]HAL released to open source by Sony Ericson for Xperia™ phones
Just come across a very useful post on sony ericsson developer blog ..
Sensor HAL for Xperia™ phones available as open source
Believe this should aid fellow developers in developing custom roms for xperia 2011 line..
Also last week they posted layouts for local keyboards for the pro models.. chk them out.