1 .\" Copyright (c) 2004 Atte Peltomaki
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
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32 .Nd "Ensoniq AudioPCI ES137x bridge device driver"
34 To compile this driver into the kernel, place the following lines in your
35 kernel configuration file:
36 .Bd -ragged -offset indent
38 .Cd "device snd_es137x"
41 Alternatively, to load the driver as a module at boot time, place the
44 .Bd -literal -offset indent
50 bridge driver allows the generic audio driver
52 to attach to the Ensoniq 137x audio cards.
53 .Ss Runtime Configuration
56 variables are available in addition to those available to all
59 .Bl -tag -width ".Va hw.snd.pcm%d.latency_timer" -offset indent
60 .It Va hw.snd.pcm%d.latency_timer
61 Controls the PCI latency timer setting.
62 Increasing this value will solve most popping and crackling issues
63 (especially on VIA motherboards).
64 .It Va hw.snd.pcm%d.spdif_enabled
65 Enables S/PDIF output on the primary playback channel.
68 variable is available only if the device is known to support S/PDIF output.
69 .It Va dev.pcm.%d.polling
70 Experimental polling mode, where the driver operates by querying the device
71 state on each tick using
73 Polling is disabled by default.
74 Do not enable it unless you are facing weird interrupt problems or if the
75 device cannot generate interrupts at all.
80 driver supports the following sound cards:
92 Creative SB AudioPCI CT4730
94 Ensoniq AudioPCI ES1370
96 Ensoniq AudioPCI ES1371-A
98 Ensoniq AudioPCI ES1371-B
100 Ensoniq AudioPCI ES1373-A
102 Ensoniq AudioPCI ES1373-B
104 Ensoniq AudioPCI ES1373-8
111 device driver first appeared in
114 .An "Russell Cattelan" Aq cattelan@thebarn.com
115 .An "Cameron Grant" Aq cg@FreeBSD.org
116 .An "Joachim Kuebart"
117 .An "Jonathan Noack" Aq noackjr@alumni.rice.edu