1 ======================================
2 HD-Audio Codec-Specific Mixer Controls
3 ======================================
4
5
6 This file explains the codec-specific mixer co
7
8 Realtek codecs
9 --------------
10
11 Channel Mode
12 This is an enum control to change the surrou
13 appears only when the surround channels are
14 It gives the number of channels to be used,
15 and "8ch". According to the configuration,
16 jack-retasking of multi-I/O jacks.
17
18 Auto-Mute Mode
19 This is an enum control to change the auto-m
20 headphone and line-out jacks. If built-in s
21 and/or line-out jacks are available on a mac
22 appears.
23 When there are only either headphones or lin
24 "Disabled" and "Enabled" state. When enable
25 automatically when a jack is plugged.
26
27 When both headphone and line-out jacks are p
28 "Disabled", "Speaker Only" and "Line-Out+Spe
29 speaker-only is chosen, plugging into a head
30 mutes the speakers, but not line-outs. When
31 selected, plugging to a headphone jack mutes
32 line-outs.
33
34
35 IDT/Sigmatel codecs
36 -------------------
37
38 Analog Loopback
39 This control enables/disables the analog-loo
40 appears only when "loopback" is set to true
41 (see HD-Audio.txt). Note that on some codec
42 and the normal PCM playback are exclusive, i
43 won't hear any PCM stream.
44
45 Swap Center/LFE
46 Swaps the center and LFE channel order. Nor
47 corresponds to the center and the right to t
48 ON, the left to the LFE and the right to the
49
50 Headphone as Line Out
51 When this control is ON, treat the headphone
52 jacks. That is, the headphone won't auto-mu
53 and no HP-amp is set to the pins.
54
55 Mic Jack Mode, Line Jack Mode, etc
56 These enum controls the direction and the bi
57 pins. Depending on the jack type, it can se
58 In", for determining the input bias, or it c
59 when the pin is a multi-I/O jack for surroun
60
61
62 VIA codecs
63 ----------
64
65 Smart 5.1
66 An enum control to re-task the multi-I/O jac
67 When it's ON, the corresponding input jacks
68 mic-in) are switched as the surround and the
69
70 Independent HP
71 When this enum control is enabled, the headp
72 from an individual stream (the third PCM suc
73 the primary stream. In the case the headpho
74 side or a CLFE-channel DAC, the DAC is switc
75 automatically.
76
77 Loopback Mixing
78 An enum control to determine whether the ana
79 enabled or not. When it's enabled, the anal
80 the front-channel. Also, the same route is
81 and speaker outputs. As a side-effect, when
82 individual volume controls will be no longer
83 headphones and speakers because there is onl
84 mixer widget.
85
86 Dynamic Power-Control
87 This control determines whether the dynamic
88 detection is enabled or not. When enabled,
89 (D0/D3) are changed dynamically depending on
90 state for saving power consumptions. Howeve
91 doesn't provide a proper jack-detection, thi
92 case, turn this control OFF.
93
94 Jack Detect
95 This control is provided only for VT1708 cod
96 unsolicited event per jack plug. When this
97 the jack detection so that the headphone aut
98 turning this off would reduce the power cons
99
100
101 Conexant codecs
102 ---------------
103
104 Auto-Mute Mode
105 See Realtek codecs.
106
107
108 Analog codecs
109 --------------
110
111 Channel Mode
112 This is an enum control to change the surrou
113 appears only when the surround channels are
114 It gives the number of channels to be used,
115 According to the configuration, this also co
116 jack-retasking of multi-I/O jacks.
117
118 Independent HP
119 When this enum control is enabled, the headp
120 from an individual stream (the third PCM suc
121 the primary stream.
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