What would be the best way to read/write from a device that shows up on boot,
but there is no device node for it?
Basically what I am trying to do is to be able to send to commands to the csa
device so that I can control the breakout box for my GameTheatre XP so I
don't get cracking and popping since it isn't outputting the sound through
the device correctly with just pcm. I have looked at the
/usr/share/examples/kld made a few modifications to make it create my own
device node.
How should I access the csa device so that I can have my module send
commands?
--- relevent dmesg output ---
csa0: <CS4280/CS4614/CS4622/CS4624/CS4630> mem
0xdd000000-0xdd0fffff,0xdd102000-0xdd102fff irq 5 at device 10.0 on pci0
csa: card is Hercules Game Theatre XP
pcm1: <CS461x PCM Audio> on csa0
Thanks,
--
Anish Mistry
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