SND_VIA8233(4)

💖 NAME 💖

okay bestie, meet snd_via8233(4) — the VIA Technologies VT8233 bridge device driver, and yes this is the Kernel Interfaces Manual page for it. That’s the whole name vibe, and it’s giving “southbridge audio but make it FreeBSD.” 🦋

✨ SYNOPSIS ✨

Wanna bake this driver into your kernel? Slip these lines into your kernel configuration file, exactly like this:

device sound
device snd_via8233

Or, if you’d rather load it as a module at boot time, put this line in loader.conf(5):

snd_via8233_load="YES"

🌸 DESCRIPTION 🌸

The snd_via8233 bridge driver lets the generic audio driver, sound(4), attach to VIA VT8233 audio devices. These audio chipsets are integrated in the southbridge on many VIA based motherboards. Lowkey motherboard lore, highkey audio setup. 🎀

🎧 Runtime Configuration 🎧

On top of the sysctl(8) variables every sound(4) device already gets, this driver adds this one:

• dev.pcm.%d.polling — experimental polling mode, where the driver operates by querying the device state on each tick using callout(9). Polling is disabled by default. Do not enable it unless you are facing weird interrupt problems or if the device cannot generate interrupts at all. 💀

bestie, that “experimental” and “disabled by default” is not decorative. Don’t just turn it on for fun.

🔥 HARDWARE 🔥

The snd_via8233 driver supports these audio chipsets:

• VIA VT8233
• VIA VT8233A
• VIA VT8233C
• VIA VT8235
• VIA VT8237
• VIA VT8251

👀 SEE ALSO 👀

• sound(4)

🕰️ HISTORY 🕰️

The snd_via8233 device driver first appeared in FreeBSD 4.7. vintage but still iconic. ✨

🫶 AUTHORS 🫶

This manual page was written by Joel Dahl <joel@FreeBSD.org>. respectful author credit, periodt. 💜

😭 BUGS 😭

The snd_via8233 driver does not support S/PDIF. There is partial support in the code, so implementing it should be fairly easy if the right hardware is available. no cap, that’s the bug report tea. 🍓

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bye bestie 💅 — this page is from Debian, dated November 29, 2006, and it’s the SND_VIA8233(4) manual page. 🎀