Documentation/sound/alsa/ControlNames.txt

   1 This document describes standard names of mixer controls.
   2
   3 Syntax: SOURCE [DIRECTION] FUNCTION
   4
   5 DIRECTION:
   6   <nothing>     (both directions)
   7   Playback
   8   Capture
   9   Bypass Playback
  10   Bypass Capture
  11
  12 FUNCTION:
  13   Switch        (on/off switch)
  14   Volume
  15   Route         (route control, hardware specific)
  16
  17 SOURCE:
  18   Master
  19   Master Mono
  20   Hardware Master
  21   Speaker       (internal speaker)
  22   Headphone
  23   Beep          (beep generator)
  24   Phone
  25   Phone Input
  26   Phone Output
  27   Synth
  28   FM
  29   Mic
  30   Line
  31   CD
  32   Video
  33   Zoom Video
  34   Aux
  35   PCM
  36   PCM Front
  37   PCM Rear
  38   PCM Pan
  39   Loopback
  40   Analog Loopback       (D/A -> A/D loopback)
  41   Digital Loopback      (playback -> capture loopback - without analog path)
  42   Mono
  43   Mono Output
  44   Multi
  45   ADC
  46   Wave
  47   Music
  48   I2S
  49   IEC958
  50
  51 Exceptions:
  52   [Digital] Capture Source
  53   [Digital] Capture Switch      (aka input gain switch)
  54   [Digital] Capture Volume      (aka input gain volume)
  55   [Digital] Playback Switch     (aka output gain switch)
  56   [Digital] Playback Volume     (aka output gain volume)
  57   Tone Control - Switch
  58   Tone Control - Bass
  59   Tone Control - Treble
  60   3D Control - Switch
  61   3D Control - Center
  62   3D Control - Depth
  63   3D Control - Wide
  64   3D Control - Space
  65   3D Control - Level
  66   Mic Boost [(?dB)]
  67
  68 PCM interface:
  69
  70   Sample Clock Source   { "Word", "Internal", "AutoSync" }
  71   Clock Sync Status     { "Lock", "Sync", "No Lock" }
  72   External Rate         /* external capture rate */
  73   Capture Rate          /* capture rate taken from external source */
  74
  75 IEC958 (S/PDIF) interface:
  76
  77   IEC958 [...] [Playback|Capture] Switch        /* turn on/off the IEC958 interface */
  78   IEC958 [...] [Playback|Capture] Volume        /* digital volume control */
  79   IEC958 [...] [Playback|Capture] Default       /* default or global value - read/write */
  80   IEC958 [...] [Playback|Capture] Mask          /* consumer and professional mask */
  81   IEC958 [...] [Playback|Capture] Con Mask      /* consumer mask */
  82   IEC958 [...] [Playback|Capture] Pro Mask      /* professional mask */
  83   IEC958 [...] [Playback|Capture] PCM Stream    /* the settings assigned to a PCM stream */
  84   IEC958 Q-subcode [Playback|Capture] Default   /* Q-subcode bits */
  85   IEC958 Preamble [Playback|Capture] Default    /* burst preamble words (4*16bits) */