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ALSA: hda - Update HD-Audio.txt 

Fixed typos and added a section about codecgraph.
Thanks to Vedran Miletić and Daniel T Chen for suggestions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2008-12-11 07:44:18 +01:00
parent d2afbe78a2
commit 623b9f6738
1 changed files with 15 additions and 2 deletions
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17
Documentation/sound/alsa/HD-Audio.txt
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@ -266,7 +266,7 @@ submit the improvement patch to the author.
Direct Debugging Direct Debugging
~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~
If no model option gives you a better result, and you are a touch guy 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 codec verbs to the device. Some tools are available: hda-emu and
hda-analyzer. The detailed description is found in the sections hda-analyzer. The detailed description is found in the sections
below. You'd need to enable hwdep for using these tools. See "Kernel 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 solvable, but some are hard, I'm afraid. Some distros such as
openSUSE enables the power-saving feature automatically when the power openSUSE enables the power-saving feature automatically when the power
cable is unplugged. Thus, if you hear noises, suspect first the 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. 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 - 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
~~~~~~~ ~~~~~~~
hda-emu is an HD-audio emulator. The main purpose of this program is hda-emu is an HD-audio emulator. The main purpose of this program is