1.\"- 2.\" Copyright (c) 2009 Nathan Whitehorn <nwhitehorn@FreeBSD.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 18.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 20.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 22.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 23.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24.\" POSSIBILITY OF SUCH DAMAGE. 25.\" 26.Dd January 20, 2009 27.Dt SND_AI2S 4 28.Os 29.Sh NAME 30.Nm snd_ai2s 31.Nd "Apple I2S audio device driver" 32.Sh SYNOPSIS 33To compile this driver into the kernel, 34place the following lines in your 35kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device sound" 38.Cd "device snd_ai2s" 39.Ed 40.Pp 41Alternatively, to load the driver as a 42module at boot time, place the following line in 43.Xr loader.conf 5 : 44.Bd -literal -offset indent 45snd_ai2s_load="YES" 46.Ed 47.Sh DESCRIPTION 48The 49.Nm 50driver provides support for the Apple I2S audio controllers found 51predominantly in G4 and G5 machines, along with the snapper and tumbler 52codecs. Some machines (e.g. the Mac Mini) do not have configurable 53codecs and so lack hardware volume control. 54.Sh HARDWARE 55Chips supported by the 56.Nm 57driver include: 58.Pp 59.Bl -bullet -compact 60.It 61Apple Tumbler Audio 62.It 63Apple Snapper Audio 64.El 65.Sh SEE ALSO 66.Xr snd_davbus 4 , 67.Xr sound 4 68.Sh HISTORY 69The 70.Nm 71device driver appeared in 72.Nx 2.0 73and then in 74.Fx 8.0 . 75.Sh AUTHORS 76.An -nosplit 77The 78.Nm 79driver was written by 80.An Tsubai Masanari Aq Mt tsubai@netbsd.org , 81and ported to 82.Fx 83by 84.An Marco Trillo Aq Mt marcotrillo@gmail.com . 85.Sh BUGS 86Recording and operation with non-44.1 Khz audio are not currently supported. 87