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$FreeBSD: stable/10/share/man/man4/snd_via8233.4 169495 2007-05-12 06:41:41Z brueffer $
.Dd November 29, 2006 .Dt SND_VIA8233 4 .Os .Sh NAME .Nm snd_via8233 .Nd "VIA Technologies VT8233 bridge device driver" .Sh SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: d -ragged -offset indent .Cd "device sound" .Cd "device snd_via8233" .Ed
p Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent snd_via8233_load="YES" .Ed .Sh DESCRIPTION The .Nm bridge driver allows the generic audio driver, .Xr sound 4 , to attach to the VIA VT8233 audio devices. These audio chipsets are integrated in the southbridge on many VIA based motherboards. .Ss Runtime Configuration The following .Xr sysctl 8 variables are available in addition to those available to all .Xr sound 4 devices: l -tag -width ".Va dev.pcm.%d.polling" -offset indent t Va dev.pcm.%d.polling Experimental polling mode, where the driver operates by querying the device state on each tick using .Xr 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. .El .Sh HARDWARE The .Nm driver supports the following audio chipsets:
p l -bullet -compact t VIA VT8233 t VIA VT8233A t VIA VT8233C t VIA VT8235 t VIA VT8237 t VIA VT8251 .El .Sh SEE ALSO .Xr sound 4 .Sh HISTORY The .Nm device driver first appeared in .Fx 4.7 . .Sh AUTHORS This manual page was written by .An Joel Dahl Aq joel@FreeBSD.org . .Sh BUGS The .Nm 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.