[linux-dvb] Re: Howto read audio register of av7110, SPDIF dead

[Johannes Stezenbach <js@linuxtv.org>]

Tim Kaiser wrote:
> Some users of NexusCA have no sound, others have sometimes and some have never 
> over Spdif line. It looks like a timing problem.
> I've enabled analogue sound for myself, this function is actually disabled 
> with CVS version.
> Three other users tested this code. In the moment analogue sound is switched 
> on no one has sound over SPDIF.
> Somebody an idea????
> 
> I have three questions:
> 
> -howto read out the audio read register of the av7110? I want to print out the 
> result into the kernel log.

I don't know what you mean by "audio read register".
Anyway, the SPDIF guru for av7110 is Werner Fink. Maybe
you'll find some info on http://vdrportal.de/.

Does the NexusCA have an SPDIF output which uses different
hardware then the older Nexus cards (which used the av7110 builtin
SPDIF transmitter)?

> -in av7110.c is the i2c rate reduced for the nexus ca. Has anybody an idea why 
> that _could_ have side effects on SPDIF?

No, and I bet it doesn't.

> -two other tuners using this line:
> av7110->fe->ops->set_tone = av7110_set_tone;
> 
> what is this line for???

For some DVB-S frontends DiSEqC is implemented in the av7110 firmware.
It has nothing to do with audio.

Johannes