[Openvortex-dev] ALSA directory changed to pci/au88x0/ + misc

[Manuel Jander]

Hi,

As requested, and agreed, i changed the ALSA path name to
au88x0, so confusions with Vortex 1, Vortex 2 or Advatage are avoided.
I'll update it in the next days, probably on the savannah CVS too, as it 
semes
its operational again.

I added support for larger buffers (> 16KiB), but i'm still in doubt if 
that really makes sense.
I cant apreciate any benefit yet. I used the same idea posted some time 
ago on the ALSA
devel list (flip pages in the interrupt).

By the way I started experimenting with recording support, but without 
success
yet. It semes that i got the DMA engine to actually write data into 
"somewhere", but
the problem is that it does not seme to write to the correct addresses. 
AFAIK, the
card writes in BusMaster mode, it just like playback, but the card 
writes instead of
reading, right ?

When i start recording my PC freezes hard inmediately, just like it 
would overwrite
the interrupt vector table (address 0x00000000).

When i either disable the record audio route or don't start the fifo, 
the DMA engine
just doesnt run (just as expected), and no hang occurs.
If i disable Interrupts, it still freeze, so Interrupt issues can be 
discarded.

Any ideas on howto debug this ?

The steps involved in my experiments are the following:

1)Create route :  codec -> mix_input -> mixer -> adb dma
2)fifo_adbinitialize
3)fifo_start
4) freeze....


Any ideas a gladly welcome.


Manuel Jander