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):

             snd_via8233_load="YES"

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.

Debian                                          November 29, 2006                                 SND_VIA8233(4)