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authorDavid Henningsson <david.henningsson@canonical.com>2014-10-20 12:38:09 (GMT)
committerTakashi Iwai <tiwai@suse.de>2014-10-20 13:37:36 (GMT)
commit8e648204194cb51df8562d1e2a64b7dc6b0aead3 (patch)
treed98b6ec08195676b3c8ac60aa5129be0308aad86 /Documentation/sound
parentb566762a670cb651da2fc985feb3910c92e80427 (diff)
ALSA: Update control names documentation
This document was not really up-to-date. Add recent additions to this standard - based on what the HDA driver currently does, which is some kind of a de facto standard. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound')
-rw-r--r--Documentation/sound/alsa/ControlNames.txt32
1 files changed, 27 insertions, 5 deletions
diff --git a/Documentation/sound/alsa/ControlNames.txt b/Documentation/sound/alsa/ControlNames.txt
index fea65bb..79a6127 100644
--- a/Documentation/sound/alsa/ControlNames.txt
+++ b/Documentation/sound/alsa/ControlNames.txt
@@ -1,6 +1,6 @@
This document describes standard names of mixer controls.
-Syntax: SOURCE [DIRECTION] FUNCTION
+Syntax: [LOCATION] SOURCE [CHANNEL] [DIRECTION] FUNCTION
DIRECTION:
<nothing> (both directions)
@@ -14,12 +14,29 @@ FUNCTION:
Volume
Route (route control, hardware specific)
+CHANNEL:
+ <nothing> (channel independent, or applies to all channels)
+ Front
+ Surround (rear left/right in 4.0/5.1 surround)
+ CLFE
+ Center
+ LFE
+ Side (side left/right for 7.1 surround)
+
+LOCATION: (physical location of source)
+ Front
+ Rear
+ Dock (docking station)
+ Internal
+
SOURCE:
Master
Master Mono
Hardware Master
Speaker (internal speaker)
+ Bass Speaker (internal LFE speaker)
Headphone
+ Line Out
Beep (beep generator)
Phone
Phone Input
@@ -27,14 +44,14 @@ SOURCE:
Synth
FM
Mic
- Line
+ Headset Mic (mic part of combined headset jack - 4-pin headphone + mic)
+ Headphone Mic (mic part of either/or - 3-pin headphone or mic)
+ Line (input only, use "Line Out" for output)
CD
Video
Zoom Video
Aux
PCM
- PCM Front
- PCM Rear
PCM Pan
Loopback
Analog Loopback (D/A -> A/D loopback)
@@ -47,8 +64,13 @@ SOURCE:
Music
I2S
IEC958
+ HDMI
+ SPDIF (output only)
+ SPDIF In
+ Digital In
+ HDMI/DP (either HDMI or DisplayPort)
-Exceptions:
+Exceptions (deprecated):
[Digital] Capture Source
[Digital] Capture Switch (aka input gain switch)
[Digital] Capture Volume (aka input gain volume)

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