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-rw-r--r--Documentation/sound/alsa/Procfile.txt16
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt
index 25c5d648aef..1fe48846d78 100644
--- a/Documentation/sound/alsa/Procfile.txt
+++ b/Documentation/sound/alsa/Procfile.txt
@@ -138,6 +138,22 @@ card*/codec97#0/ac97#?-?+regs
# 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
---------------------