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.
I found also that the adriver.h file in version 0.9.4 includes the file "linux/compiler.h", which is not present on older 2.4 kernels like my 2.4.7. Everything seems to compile pretty well even without this include, at least on 2.4.7, so may be a conditional inclusion is needed here.
Finally, many thanks to all the ALSA development team for all its great work! Hope this could help improve this great work even more.
Regards,
--
Denis Sbragion
InfoTecna
Tel: +39 0362 805396, Fax: +39 0362 805404
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