Documentation/sound/alsa/ControlNames.txt

   1 This document describes standard names of mixer controls.
   2
   3 Syntax: [LOCATION] SOURCE [CHANNEL] [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 CHANNEL:
  18   <nothing>     (channel independent, or applies to all channels)
  19   Front
  20   Surround      (rear left/right in 4.0/5.1 surround)
  21   CLFE
  22   Center
  23   LFE
  24   Side          (side left/right for 7.1 surround)
  25
  26 LOCATION:       (physical location of source)
  27   Front
  28   Rear
  29   Dock          (docking station)
  30   Internal
  31
  32 SOURCE:
  33   Master
  34   Master Mono
  35   Hardware Master
  36   Speaker       (internal speaker)
  37   Bass Speaker  (internal LFE speaker)
  38   Headphone
  39   Line Out
  40   Beep          (beep generator)
  41   Phone
  42   Phone Input
  43   Phone Output
  44   Synth
  45   FM
  46   Mic
  47   Headset Mic   (mic part of combined headset jack - 4-pin headphone + mic)
  48   Headphone Mic (mic part of either/or - 3-pin headphone or mic)
  49   Line          (input only, use "Line Out" for output)
  50   CD
  51   Video
  52   Zoom Video
  53   Aux
  54   PCM
  55   PCM Pan
  56   Loopback
  57   Analog Loopback       (D/A -> A/D loopback)
  58   Digital Loopback      (playback -> capture loopback - without analog path)
  59   Mono
  60   Mono Output
  61   Multi
  62   ADC
  63   Wave
  64   Music
  65   I2S
  66   IEC958
  67   HDMI
  68   SPDIF         (output only)
  69   SPDIF In
  70   Digital In
  71   HDMI/DP       (either HDMI or DisplayPort)
  72
  73 Exceptions (deprecated):
  74   [Analogue|Digital] Capture Source
  75   [Analogue|Digital] Capture Switch     (aka input gain switch)
  76   [Analogue|Digital] Capture Volume     (aka input gain volume)
  77   [Analogue|Digital] Playback Switch    (aka output gain switch)
  78   [Analogue|Digital] Playback Volume    (aka output gain volume)
  79   Tone Control - Switch
  80   Tone Control - Bass
  81   Tone Control - Treble
  82   3D Control - Switch
  83   3D Control - Center
  84   3D Control - Depth
  85   3D Control - Wide
  86   3D Control - Space
  87   3D Control - Level
  88   Mic Boost [(?dB)]
  89
  90 PCM interface:
  91
  92   Sample Clock Source   { "Word", "Internal", "AutoSync" }
  93   Clock Sync Status     { "Lock", "Sync", "No Lock" }
  94   External Rate         /* external capture rate */
  95   Capture Rate          /* capture rate taken from external source */
  96
  97 IEC958 (S/PDIF) interface:
  98
  99   IEC958 [...] [Playback|Capture] Switch        /* turn on/off the IEC958 interface */
 100   IEC958 [...] [Playback|Capture] Volume        /* digital volume control */
 101   IEC958 [...] [Playback|Capture] Default       /* default or global value - read/write */
 102   IEC958 [...] [Playback|Capture] Mask          /* consumer and professional mask */
 103   IEC958 [...] [Playback|Capture] Con Mask      /* consumer mask */
 104   IEC958 [...] [Playback|Capture] Pro Mask      /* professional mask */
 105   IEC958 [...] [Playback|Capture] PCM Stream    /* the settings assigned to a PCM stream */
 106   IEC958 Q-subcode [Playback|Capture] Default   /* Q-subcode bits */
 107   IEC958 Preamble [Playback|Capture] Default    /* burst preamble words (4*16bits) */