[alsa-devel] Via VT2020: issues with kernel 2.6.38.{2, 3} (alsa 1.0.23) - working with 2.6.33.2 (alsa 1.0.21)

[Raymond Yau]

2011/6/8 alex dot baldacchino dot alsasub at gmail dot com
<alex.baldacchino.alsasub at gmail.com>:
>
>
> http://pastebin.ca/2076750
>
>
> By the way, should something like the above be done for capture
> streams as well? I've noticed (with front panel disabled) that
> controls "Front Mic Playback Volume" and "Front Mic Playback Switch"
> are correctly missing from audio-mixer widget 0x21, but node 0x29 is
> still 'attached' to control "Front Mic Boost Capture Volume", which is
> accessible through a mixer (though I didn't try to play with it; it is
> listed also by amixer output in above linked document). Is this the
> wanted/expected behaviour?

It seem that 0x2b and 0x29 does not have any mic boost capture volume,
that look like "Playback Switch" when they are retasked as output for
3 jacks motherboard

Node 0x29 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Front Mic Boost Capture Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000233c: IN OUT HP Detect
    Vref caps: HIZ 50 100
  Pin Default 0x02a19037: [Jack] Mic at Ext Front
    Conn = 1/8, Color = Pink
    DefAssociation = 0x3, Sequence = 0x7
  Pin-ctls: 0x21: IN VREF_50
  Unsolicited: tag=20, enabled=1
  Power states:  D0 D1 D2 D3
  Power: setting=D3, actual=D3
  Connection: 1
     0x1c

Node 0x2b [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Mic Boost Capture Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00002334: IN OUT Detect
    Vref caps: HIZ 50 100
  Pin Default 0x01a19036: [Jack] Mic at Ext Rear
    Conn = 1/8, Color = Pink
    DefAssociation = 0x3, Sequence = 0x6
  Pin-ctls: 0x21: IN VREF_50
  Unsolicited: tag=20, enabled=1
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
  Connection: 2
     0x0a* 0x0c

/* capture mixer elements */
static const struct snd_kcontrol_new vt1718S_capture_mixer[] = {
	HDA_CODEC_VOLUME("Capture Volume", 0x10, 0x0, HDA_INPUT),
	HDA_CODEC_MUTE("Capture Switch", 0x10, 0x0, HDA_INPUT),
	HDA_CODEC_VOLUME_IDX("Capture Volume", 1, 0x11, 0x0, HDA_INPUT),
	HDA_CODEC_MUTE_IDX("Capture Switch", 1, 0x11, 0x0, HDA_INPUT),
-	HDA_CODEC_VOLUME("Mic Boost Capture Volume", 0x2b, 0x0, HDA_INPUT),
-	HDA_CODEC_VOLUME("Front Mic Boost Capture Volume", 0x29, 0x0,
-			 HDA_INPUT),



 (I understand there must be, anyway, two
> captures and two input sources, because there's still one line-in plus
> one (rear) mic, plus stereo-mix to deal with, and one "boost capture
> volume" control for the rear mic does make sense, my doubt is about
> its corresponding control for the now missing front mic).
>

The problem is in hda_verb vt1718S_volume_init_verbs

	/* Amp Indices: CD = 1, Mic1 = 2, Line = 3, Mic2 = 4 */
	{0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
	{0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(1)},
	{0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(2)},
	{0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(3)},
	{0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(5)},

node 0x21 of your vt2020 has only 5 connections

Refer to commit 4ab2d53a99b6dcee86837d2a9739bfb9f468db45

you will need to ask the author of this patch since the patch
explicitly change this non exisiting connection of node 0x21 on your
vt2020

-       {0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(5)},
+       {0x21, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(5)},



Node 0x21 [Audio Mixer] wcaps 0x20050b: Stereo Amp-In
  Control: name="Front Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=3, ofs=0
  Control: name="Front Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=3, ofs=0
  Control: name="Rear Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Rear Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Line Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=2, ofs=0
  Control: name="Line Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=2, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x80 0x80] [0x1f 0x1f] [0x1f 0x1f] [0x1f 0x1f] [0x97 0x97]
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
  Connection: 5
     0x2c 0x2b 0x2a 0x29 0x28