NAME¶
snd_via8233
—
VIA Technologies VT8233 bridge device driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel
configuration file:
device sound
device snd_via8233
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
DESCRIPTION¶
The
snd_via8233
bridge driver allows the
generic audio driver,
sound(4), to attach to the
VIA VT8233 audio devices. These audio chipsets are integrated in the
southbridge on many VIA based motherboards.
Runtime Configuration¶
The following
sysctl(8) variables are available in
addition to those available to all
sound(4)
devices:
- 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.
HARDWARE¶
The
snd_via8233
driver supports the following
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.
AUTHORS¶
This manual page was written by
Joel Dahl
⟨joel@FreeBSD.org⟩.
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.