I totally agree on the open source part. I'm all pro OS and have both used and contributed on OS projects.
Anyhow, TI have a video where they talk about the implementation, and for me whos new to flux, back emf and such - by watching this, i got a good understanding in how they think and how their algorithms work, without knowing about the code.
Could be I'm way of, but they got some clever thinking going on there..