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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-21 16:38:13 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-21 17:17:59 +0100
commit79fb9387f88b6b44bbc46e19cae26d2c9fe3bb6a (patch)
treee291bf379268358a1a5a6d9e32a33cabedf6d0d2 /include/sound
parentb8e583f6012d618fb93bb38a302b63c3c6d2bfbc (diff)
downloadop-kernel-dev-79fb9387f88b6b44bbc46e19cae26d2c9fe3bb6a.zip
op-kernel-dev-79fb9387f88b6b44bbc46e19cae26d2c9fe3bb6a.tar.gz
ASoC: Add DAPM widget power decision debugfs files
Currently when built with DEBUG DAPM will dump information about the power state decisions it is taking for each widget to dmesg. This isn't an ideal way of getting the information - it requires a kernel build to turn it on and off and for large hub CODECs the volume of information is so large as to be illegible. When the output goes to the console it can also cause a noticable impact on performance simply to print it out. Improve the situation by adding a dapm directory to our debugfs tree containing a file per widget with the same information in it. This still requires a decision to build with debugfs support but is easier to navigate and much less intrusive. In addition to the previously displayed information active streams are also shown in these files. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc-dapm.h1
-rw-r--r--include/sound/soc.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 35814ce..1673f0b 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -283,6 +283,7 @@ void snd_soc_dapm_shutdown(struct snd_soc_device *socdev);
/* dapm sys fs - used by the core */
int snd_soc_dapm_sys_add(struct device *dev);
+void snd_soc_dapm_debugfs_init(struct snd_soc_codec *codec);
/* dapm audio pin control and status */
int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, const char *pin);
diff --git a/include/sound/soc.h b/include/sound/soc.h
index dbb1702..0758a1b 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -416,6 +416,7 @@ struct snd_soc_codec {
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_reg;
struct dentry *debugfs_pop_time;
+ struct dentry *debugfs_dapm;
#endif
};
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