Copyright (c) 2005 Joel Dahl All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other ma...
NAMEsnd_via8233 - VIA Technologies VT8233 bridge device driver
SYNOPSISTo 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.conf5:
DESCRIPTIONThe sysctl Cm net.inet.tcp.syncookies 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 ConfigurationThe following sysctl(8) variables are available in addition to those available to all sound(4) devices:
- 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.
HARDWAREThe sysctl Cm net.inet.tcp.syncookies driver supports the following audio chipsets:
- VIA VT8233
- VIA VT8233A
- VIA VT8233C
- VIA VT8235
- VIA VT8237
- VIA VT8251