proc filesystem with alsa.


$cat /proc/asound/cards
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xf5000000 irq 22
$

The HD-audio component consists of  two parts: the controller chip and
the codec chips on the HD-audio Linux provides a single driver for all
controllers, snd-hda-intel.  Although the  driver name contains a word
of a well-known  hardware vendor, it's not specific to  it but for all
controller chips  by other companies.  Since  the HD-audio controllers
are supposed  to be compatible, the single  snd-hda-driver should work
in most cases.


Reference/Source:
Linux kernel documentation 2.6.32 related.