SND_ATIIXP(4)						   BSD Kernel Interfaces Manual 					     SND_ATIIXP(4)

NAME

     snd_atiixp -- ATI IXP bridge device driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device sound
	   device snd_atiixp

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   snd_atiixp_load="YES"

DESCRIPTION

     The snd_atiixp bridge driver allows the generic audio driver, sound(4), to attach to ATI IXP audio devices.  This driver supports 16bit play-
     back and recording, and 32bit native playback and recording.

   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_atiixp driver supports the following audio chipsets:

     o	 ATI IXP 200
     o	 ATI IXP 300
     o	 ATI IXP 400

SEE ALSO

     sound(4)

HISTORY

     The snd_atiixp device driver first appeared in FreeBSD 6.1.

AUTHORS

     This manual page was written by Joel Dahl <joel@FreeBSD.org>.

BUGS

     The snd_atiixp driver does not support S/PDIF, but implementing it should be fairly easy if the right hardware is available.

     32bit native recording is broken on some hardware.

BSD
								 November 29, 2006							       BSD