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-rw-r--r--Documentation/sound/alsa/HD-Audio.txt17
1 files changed, 15 insertions, 2 deletions
diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt
index ca8187de52d..ee9117eee1a 100644
--- a/Documentation/sound/alsa/HD-Audio.txt
+++ b/Documentation/sound/alsa/HD-Audio.txt
@@ -266,7 +266,7 @@ submit the improvement patch to the author.
Direct Debugging
~~~~~~~~~~~~~~~~
If no model option gives you a better result, and you are a touch guy
-to fight again the evil, try debugging via hitting the raw HD-audio
+to fight against evil, try debugging via hitting the raw HD-audio
codec verbs to the device. Some tools are available: hda-emu and
hda-analyzer. The detailed description is found in the sections
below. You'd need to enable hwdep for using these tools. See "Kernel
@@ -389,7 +389,7 @@ power-down/up depending on the device. Some of them might be
solvable, but some are hard, I'm afraid. Some distros such as
openSUSE enables the power-saving feature automatically when the power
cable is unplugged. Thus, if you hear noises, suspect first the
-power-saving. See /sys/modules/snd_hda_intel/parameters/power_save to
+power-saving. See /sys/module/snd_hda_intel/parameters/power_save to
check the current value. If it's non-zero, the feature is turned on.
@@ -503,6 +503,19 @@ alsa-project.org:
- http://git.alsa-project.org/?p=alsa.git;a=tree;f=hda-analyzer
+Codecgraph
+~~~~~~~~~~
+Codecgraph is a utility program to generate a graph and visualizes the
+codec-node connection of a codec chip. It's especially useful when
+you analyze or debug a codec without a proper datasheet. The program
+parses the given codec proc file and converts to SVG via graphiz
+program.
+
+The tarball and GIT trees are found in the web page at:
+
+- http://helllabs.org/codecgraph/
+
+
hda-emu
~~~~~~~
hda-emu is an HD-audio emulator. The main purpose of this program is