I'm trying to enable alsa support in my gentoo box, following the Gentoo Linux ALSA Guide.
When I run
lspci -v | grep -i audio
00:06.1 Audio device: nVidia Corporation MCP55 High Definition Audio (rev a2)
When I head over to the ALSA Sound Card Matrix site the only nvidia listings are for
AC97 (nforce-1 - nforce-4)
HDA (nforce-430 and later)
The only nvidia driver listing in my kernel PCI Devices configuration is
Intel/Sis/nVidia/AMD/ALi AC97 Controller (NEW)
not sure where to go from here.
I'm not positive this is what you are looking for, but:
Flag that module to be built into the kernel (Either with a * to build it into the kernel or an M to make it a loadable/unloadable module. I generally build that sort of thing into the kernel, but everyone has their own style.)
Make sure to save the configuration
$ make && make modules_install
$ mount /boot (if you have it as a separate partition)
$ cp /usr/src/linux/arch/<yourarch>/boot/bzImage /boot/<yourkernelimage>
Then reboot if you built it into the kernel, or just load the module if you built it as a module (modprobe snd-intel8x0 in your case).
Hopefully you wanted to know how to put something into your kernel. If not... sorry.
The module you are looking for is under "Intel High Definition Audio" (or something like that), you'll find the Nvidia HDA under that.