Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / Documentation / sound / alsa / Procfile.txt

diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt
index d686ea3..1fe4884 100644 (file)
--- a/Documentation/sound/alsa/Procfile.txt
+++ b/Documentation/sound/alsa/Procfile.txt
@@ -131,6 +131,28 @@ card*/codec97#*/ac97#?-?
 card*/codec97#0/ac97#?-?+regs
        Shows the AC97 register dump.  Useful for debugging.
 
+       When CONFIG_SND_DEBUG is enabled, you can write to this file for
+       changing an AC97 register directly.  Pass two hex numbers.
+       For example,
+
+       # echo 02 9f1f > /proc/asound/card0/codec97#0/ac97#0-0+regs
+
+
+USB Audio Streams
+-----------------
+
+card*/stream*
+       Shows the assignment and the current status of each audio stream
+       of the given card.  This information is very useful for debugging.
+
+
+HD-Audio Codecs
+---------------
+
+card*/codec#*
+       Shows the general codec information and the attribute of each
+       widget node.
+
 
 Sequencer Information
 ---------------------