On Mon, 30 Jun 2003, Takashi Iwai wrote:
> Hi,
>
> At Tue, 17 Jun 2003 09:50:29 +0200,
> Denis Sbragion wrote:
> >
> > Hello all,
> >
> > I found that the SPDIF input on my TerraTec EWX 24/96 no longer works with
> > the latest 0.9.4 drivers. I digged into the cs8427.c code and I found that
> > this lines in function 'snd_cs8427_create' of version 0.9.3:
> >
> > ...
> > /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence,
> > biphase, parity status bits */
> > /* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR,
> > Why setting CS8427_V causes clicks and glitches? */
> > CS8427_UNLOCK | CS8427_CONF | CS8427_BIP | CS8427_PAR,
> > ...
> >
> > have been changed into:
> >
> > ...
> > /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence,
> > biphase, parity status bits */
> > /* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR, * /
> > 0xff, /* set everything */
> > ...
> >
> > in version 0.9.4, along with some other changes. The "Why setting CS8427_V
> > causes clicks and glitches?" comment of version 0.9.3 comes from an old
> > patch I sent to Jaroslav many months ago, when I had a similar problem with
> > an older 0.9.0something version of the drivers. The fact that this patch
> > has been rolled back makes me think that there are some other cards out
> > there that need that flag, so I think that a card dependent intialization
> > is needed here, but I don't know how to code it. Of course I'm willing to
> > help in coding and testing everything that may be needed to make the driver
> > run, though I can only test on my own EWX. Relevant environment: RedHat
> > Linux 7.2, 2.4.7 kernel.
>
> thanks for spotting this out.
>
> as you suggested above, i added the ews-specific initialization
> there. it just resets the RECVERRMASK register afterwards in
> ews.c. please try the cvs version.
Sorry for late reply. My EWS 24/96 does not have this problem. I suggest
to create a control which will turn on/off the V bit checking. I also
suggest to verify the cable connection.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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