diff options
| author | joel <joel@FreeBSD.org> | 2006-11-29 17:07:02 +0000 |
|---|---|---|
| committer | joel <joel@FreeBSD.org> | 2006-11-29 17:07:02 +0000 |
| commit | bcf19b8816ed961fb5b7f4e51bbe80108f3a43ab (patch) | |
| tree | 601afc949d3fb163e993ff41263ab65f3182a18b /share/man/man4/snd_hda.4 | |
| parent | 45926e53d0a86af2776153b353c65aa3f9f6af08 (diff) | |
| download | FreeBSD-src-bcf19b8816ed961fb5b7f4e51bbe80108f3a43ab.zip FreeBSD-src-bcf19b8816ed961fb5b7f4e51bbe80108f3a43ab.tar.gz | |
Add the dev.pcm.%d.polling sysctl and a short description.
Reviewed by: ru
Diffstat (limited to 'share/man/man4/snd_hda.4')
| -rw-r--r-- | share/man/man4/snd_hda.4 | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/share/man/man4/snd_hda.4 b/share/man/man4/snd_hda.4 index 5ce4732..63432b0 100644 --- a/share/man/man4/snd_hda.4 +++ b/share/man/man4/snd_hda.4 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 8, 2006 +.Dd November 29, 2006 .Dt SND_HDA 4 .Os .Sh NAME @@ -73,6 +73,21 @@ The HDA specification defines the register-level interface, physical link characteristics, codec programming models, and codec architectural components. This specification is intended for both device driver developers and hardware component designers. +.Ss Runtime Configuration +The following +.Xr sysctl 8 +variables are available in addition to those available to all +.Xr sound 4 +devices: +.Bl -tag -width ".Va dev.pcm.%d.polling" -offset indent +.It Va dev.pcm.%d.polling +Experimental polling mode, where the driver operates by querying the device +state on each tick using +.Xr 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. +.El .Sh HARDWARE The .Nm |
