Arff, je suis passé à côté de cette news ci !!! Depuis le temps que je l’attends.
Sam Leffler a libéré le code de l’HAL sous licence ISC.
Le code est disponible ici (dépôt subversion).
Selon les termes de Sam:

 Coincident with the release of this code I have concluded my agreement with Atheros whereby I had access to information about their devices. This means that in the future all fixes, updates for new chips, etc. will need to be a community effort. Atheros states the Linux platform will be the reference public code base so folks wanting to add support for other platforms will have to scrape the information from there.