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| -rw-r--r-- | Documentation/sound/alsa/HD-Audio-Controls.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/HD-Audio-Controls.txt b/Documentation/sound/alsa/HD-Audio-Controls.txt index 1482035243e..e9621e349e1 100644 --- a/Documentation/sound/alsa/HD-Audio-Controls.txt +++ b/Documentation/sound/alsa/HD-Audio-Controls.txt @@ -98,3 +98,19 @@ Conexant codecs * Auto-Mute Mode See Reatek codecs. + + +Analog codecs +-------------- + +* Channel Mode + This is an enum control to change the surround-channel setup, + appears only when the surround channels are available. + It gives the number of channels to be used, "2ch", "4ch" and "6ch". + According to the configuration, this also controls the + jack-retasking of multi-I/O jacks. + +* Independent HP + When this enum control is enabled, the headphone output is routed + from an individual stream (the third PCM such as hw:0,2) instead of + the primary stream. |