Merge branch 'topic/azt3328' into for-linus

[pandora-kernel.git] / Documentation / sound / alsa / Procfile.txt

diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt
index 381908d..719a819 100644 (file)
--- a/Documentation/sound/alsa/Procfile.txt
+++ b/Documentation/sound/alsa/Procfile.txt
@@ -101,6 +101,8 @@ card*/pcm*/xrun_debug
          bit 0 = Enable XRUN/jiffies debug messages
          bit 1 = Show stack trace at XRUN / jiffies check
          bit 2 = Enable additional jiffies check
+         bit 3 = Log hwptr update at each period interrupt
+         bit 4 = Log hwptr update at each snd_pcm_update_hw_ptr()
 
        When the bit 0 is set, the driver will show the messages to
        kernel log when an xrun is detected.  The debug message is
@@ -117,6 +119,9 @@ card*/pcm*/xrun_debug
        buggy) hardware that doesn't give smooth pointer updates.
        This feature is enabled via the bit 2.
 
+       Bits 3 and 4 are for logging the hwptr records.  Note that
+       these will give flood of kernel messages.
+
 card*/pcm*/sub*/info
        The general information of this PCM sub-stream.