X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=Documentation%2Fsound%2Falsa%2FProcfile.txt;h=1fe48846d78fdcdc54c9f9c3a879d2795d3210f7;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=d686ea3c39eb5968bfb5362b445f3295109bdc70;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt
index d686ea3c3..1fe48846d 100644
--- 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
 ---------------------