Tsvetan reports some good news for the open source community:
a group of hackers (jemk, wingrime, nove) worked on the reverse engineering of CedarX and an open source driver for Allwinner chips is on the way!
Details on these efforts and links can be found at Olimex.
Via the contact form.
For those wondering:
“CedarX is Allwinner’s multimedia co-processing technology for hardware accelerated video and image decoding, as used inside their A10 SoC’s and others.”
Ref: http://linux-sunxi.org/CedarX