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.\" $FreeBSD$ 27.\" 28.Dd January 20, 2009 29.Dt SND_AI2S 4 30.Os 31.Sh NAME 32.Nm snd_ai2s 33.Nd "Apple I2S audio device driver" 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device sound" 40.Cd "device snd_ai2s" 41.Ed 42.Pp 43Alternatively, to load the driver as a 44module at boot time, place the following line in 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47snd_ai2s_load="YES" 48.Ed 49.Sh DESCRIPTION 50The 51.Nm 52driver provides support for the Apple I2S audio controllers found 53predominantly in G4 and G5 machines, along with the snapper and tumbler 54codecs. Some machines (e.g. the Mac Mini) do not have configurable 55codecs and so lack hardware volume control. 56.Sh HARDWARE 57.Pp 58Chips supported by the 59.Nm 60driver include: 61.Pp 62.Bl -bullet -compact 63.It 64Apple Tumbler Audio 65.It 66Apple Snapper Audio 67.El 68.Pp 69.Sh BUGS 70Recording and operation with non-44.1 Khz audio are not currently supported. 71.Sh SEE ALSO 72.Xr sound 4 , 73.Xr snd_davbus 4 74.Sh HISTORY 75The 76.Nm 77device driver appeared in 78.Nx 2.0 79and then in 80.Fx 8.0 . 81.Sh AUTHORS 82.An -nosplit 83The 84.Nm 85driver was written by 86.An Tsubai Masanari 87.Aq tsubai@netbsd.org , 88and ported to FreeBSD by 89.An Marco Trillo 90.Aq marcotrillo@gmail.com . 91