Dear,
I am back to add support of h.264 decoding using Coda DX6 on i.MX27 
(after long months of inactivity).
I base my work on driver from linux 2.6.22 (libvpu) and last coda.c from 
linux-next/master.

When I send DEC_SEQ_INIT command, it fails but I don't know why.
1) Which internal buffers do Coda DX6 really have/used for decoding 
PARABUF, WORKBUF, PSBUF, ...) ?
2) What is their role ?
3) I see in some code that there is a command 
CODA_RET_DEC_SEQ_ERR_REASON (0x1E0), which has the same opcode has 
RET_DEC_SEQ_NEXT_FRAME_NUM, but when I run this command after 
DEC_SEQ_INIT, it returns 1 that does not seems to be correct error 
(regarding RetCode enum in vpu_lib.h in libvpu)

Code is based on 3.6.0 kernel revision with some backport from more 
recent version of coda.c

Thanks a lot for your help.
Best regards,
Gaëtan Carlier.