Number of physical playback channels for Santa Cruz card

[Seán C. Farley]

Although I have successfully run my Santa Cruz card with virtual
channels, I am interested in using the possible hardware channels my
card may have.

dmesg:
csa0: <CS4280/CS4614/CS4622/CS4624/CS4630> mem 0xfe600000-0xfe6fffff,0xfe700000-0xfe700fff irq 17 at device 14.0 on pci0
csa: card is Turtle Beach Santa Cruz
pcm0: <CS461x PCM Audio> on csa0
pcm0: <Cirrus Logic CS4297A AC97 Codec>

/dev/sndstat (without virtual channels):
pcm0: <CS461x PCM Audio> at irq 17 kld snd_csa (1p/1r/0v channels duplex default)

I believe my card uses the CS4630 DSP.  I also think it has more than
the one playback channel (maybe four?) it is claiming.  Is there a way I
can verify?  If it does, would it be relatively easy to update the
driver (csa) to support multiple physical channels?

Thank you.

Seán

P.S.  Please Cc:; I am not subscribed.
-- 
sean-freebsd at farley.org