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author | Takashi Iwai <tiwai@suse.de> | 2008-12-11 01:44:18 -0500 |
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committer | Takashi Iwai <tiwai@suse.de> | 2008-12-11 01:44:18 -0500 |
commit | 623b9f6738dee0394398564a74fdabbff00f506f (patch) | |
tree | b6b039e8bbfb787afc7d4a6dc5142ab65a136469 /Documentation/sound/alsa/HD-Audio.txt | |
parent | d2afbe78a2922929ad44882d3583d938b9949a30 (diff) |
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>
Diffstat (limited to 'Documentation/sound/alsa/HD-Audio.txt')
-rw-r--r-- | Documentation/sound/alsa/HD-Audio.txt | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt index ca8187de52d8..ee9117eee1aa 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. | |||
266 | Direct Debugging | 266 | Direct Debugging |
267 | ~~~~~~~~~~~~~~~~ | 267 | ~~~~~~~~~~~~~~~~ |
268 | If no model option gives you a better result, and you are a touch guy | 268 | If no model option gives you a better result, and you are a touch guy |
269 | to fight again the evil, try debugging via hitting the raw HD-audio | 269 | to fight against evil, try debugging via hitting the raw HD-audio |
270 | codec verbs to the device. Some tools are available: hda-emu and | 270 | codec verbs to the device. Some tools are available: hda-emu and |
271 | hda-analyzer. The detailed description is found in the sections | 271 | hda-analyzer. The detailed description is found in the sections |
272 | below. You'd need to enable hwdep for using these tools. See "Kernel | 272 | 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 | |||
389 | solvable, but some are hard, I'm afraid. Some distros such as | 389 | solvable, but some are hard, I'm afraid. Some distros such as |
390 | openSUSE enables the power-saving feature automatically when the power | 390 | openSUSE enables the power-saving feature automatically when the power |
391 | cable is unplugged. Thus, if you hear noises, suspect first the | 391 | cable is unplugged. Thus, if you hear noises, suspect first the |
392 | power-saving. See /sys/modules/snd_hda_intel/parameters/power_save to | 392 | power-saving. See /sys/module/snd_hda_intel/parameters/power_save to |
393 | check the current value. If it's non-zero, the feature is turned on. | 393 | check the current value. If it's non-zero, the feature is turned on. |
394 | 394 | ||
395 | 395 | ||
@@ -503,6 +503,19 @@ alsa-project.org: | |||
503 | - http://git.alsa-project.org/?p=alsa.git;a=tree;f=hda-analyzer | 503 | - http://git.alsa-project.org/?p=alsa.git;a=tree;f=hda-analyzer |
504 | 504 | ||
505 | 505 | ||
506 | Codecgraph | ||
507 | ~~~~~~~~~~ | ||
508 | Codecgraph is a utility program to generate a graph and visualizes the | ||
509 | codec-node connection of a codec chip. It's especially useful when | ||
510 | you analyze or debug a codec without a proper datasheet. The program | ||
511 | parses the given codec proc file and converts to SVG via graphiz | ||
512 | program. | ||
513 | |||
514 | The tarball and GIT trees are found in the web page at: | ||
515 | |||
516 | - http://helllabs.org/codecgraph/ | ||
517 | |||
518 | |||
506 | hda-emu | 519 | hda-emu |
507 | ~~~~~~~ | 520 | ~~~~~~~ |
508 | hda-emu is an HD-audio emulator. The main purpose of this program is | 521 | hda-emu is an HD-audio emulator. The main purpose of this program is |