[alsa-devel] ALSA snd-fireworks Echo AudioFire 2

[Harry van Haaren]

On Mon, Aug 25, 2014 at 5:21 AM, Takashi Sakamoto
<o-takashi at sakamocchi.jp> wrote:
> (C.C.ed to alsa-devel and Clemens)
Thanks!

> I know that some Fireworks devices with a certain firmware (not exactly
> identified) sometimes perform the same behaviour. Could I ask you to
> confirm to see these logs always when you playback, or sometimes?

Its consistent: every time it is opened for playback.

To test / debug some more, I've tried starting JACK on the device
using ALSA, hw:AudioFire2, duplex, -p256 -n2. QJackCtl reports a
stream of xruns: are these the discontinuities similar to the dmesg
prints?

I'll try upgrading the firmware on the device (I don't know what
version is currently on it).
OK: after a flash (using a windows machine), the ASIO driver there now
reports the following (latest from Echo) firmware versions:

WDM driver 5.8
ASIO driver 5.8
Console 5.8.1
ARM firmware 5.8
FPGA 3.0.2

Just tried using it, the same type of dmesg discontinuities unfortunately:
[  190.433203] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 0A
[  190.591959] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 02
[  190.749202] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 12
[  190.908270] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 12
[  191.066267] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 0A
[  191.225139] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 02
[  191.383942] snd-fireworks fw1.0: Detect discontinuity of CIP: 00 02

JACK also reports xruns, same as before: flashing the firmware to the
latest doesn't seem to have changed anything. The firmware of this
device was at 5.7 before the flash, perhaps its "too new" for
snd-fireworks in its current state?

> # Currently I'm working for moving to my new flat.
> # So during a few weeks, I may not reply as you expected, sorry.
Good luck with the new place!

I'm new to snd kernel module development, so I'm not sure what the next step is:
Guidance and help appreciated, -Harry