[alsa-devel] Mic detection on Mackbook Pro 12,1 (CS4208)

[Takashi Iwai]

On Thu, 17 Nov 2016 11:30:15 +0100,
Paulo Fidalgo wrote:
> 
> @Takashi, can you confirm if the possible values we can set are the
> same the hdajackretask program uses on overrides?

Yes, hdajackretask allows you to set the pin configuration encoded in
the expected format.


Takashi

> On 14 November 2016 at 22:21, Paulo Fidalgo <paulo.fidalgo.pt at gmail.com> wrote:
> > Thanks Takashi for point out, but that document is overwhelming.
> > I understand that developing drivers for unknown hardware should be
> > like running in the woods with our eyes covered, but I don't feel I
> > have the enough knowledge and time to be able to do it.
> >
> > If helps, when I connect the headset running hda-analyzer tool in
> > monitor mode I only have events related to the OUTPUT:
> >
> > Watching 2 cards
> > ======================================
> > Diff for codec 1/0 (0x10134208):
> > ---
> > +++
> > @@ -7,17 +7,17 @@
> >  No Modem Function Group found
> >  Default PCM:
> >      rates [0x0]:
> >      bits [0x0]:
> >      formats [0x0]:
> >  Default Amp-In caps: N/A
> >  Default Amp-Out caps: N/A
> >  GPIO: io=6, o=2, i=0, unsolicited=1, wake=1
> > -  IO[0]: enable=1, dir=1, wake=0, sticky=0, data=1, unsol=0
> > +  IO[0]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0
> >    IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
> >    IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
> >    IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
> >    IO[4]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
> >    IO[5]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
> >  Node 0x02 [Audio Output] wcaps 0xd043d: Stereo Amp-Out Stripe
> >    Control: name="Headphone Playback Volume", index=0, device=0
> >      ControlAmp: chs=3, dir=1, idx=0, ofs=0
> > @@ -225,26 +225,24 @@
> >    Power: setting=D3, actual=D3
> >    Connection: 1
> >       0x02
> >  Node 0x12 [Pin Complex] wcaps 0x400501: Stereo
> >    Pincap 0x00000050: OUT Balance
> >    Pin Default 0x90170011: [Fixed] Speaker at Int N/A
> >      Conn = Analog, Color = Unknown
> >      DefAssociation = 0x1, Sequence = 0x1
> > -  Pin-ctls: 0x40: OUT
> >    Power: setting=D3, actual=D3
> >    Connection: 1
> >       0x03
> >  Node 0x13 [Pin Complex] wcaps 0x400501: Stereo
> >    Pincap 0x00000050: OUT Balance
> >    Pin Default 0x90170012: [Fixed] Speaker at Int N/A
> >      Conn = Analog, Color = Unknown
> >      DefAssociation = 0x1, Sequence = 0x2
> > -  Pin-ctls: 0x40: OUT
> >    Power: setting=D3, actual=D3
> >    Connection: 1
> >       0x04
> >  Node 0x14 [Pin Complex] wcaps 0x400501: Stereo
> >    Pincap 0x00000050: OUT Balance
> >    Pin Default 0x90170014: [Fixed] Speaker at Int N/A
> >      Conn = Analog, Color = Unknown
> >      DefAssociation = 0x1, Sequence = 0x4
> >
> >
> > Is there any other info I can provide to help?
> >
> > Kind regards,
> >
> > Paulo Fidalgo
> >
> > On 11 November 2016 at 20:34, Takashi Iwai <tiwai at suse.de> wrote:
> >> On Thu, 10 Nov 2016 22:52:52 +0100,
> >> Paulo Fidalgo wrote:
> >>>
> >>> Hi,
> >>>
> >>> After reporting the issue on bugzilla
> >>> (https://bugzilla.kernel.org/show_bug.cgi?id=155601) I felt I could do
> >>> more in order to try to get a patch to fix the issue.
> >>>
> >>> Basically when I plug an headset(mic+headphone), it only detects the
> >>> headphone not the mic.
> >>>
> >>> Since I assumed the "memory address" of the 0x18 pin is wrong, I've
> >>> tried to change some values in order to get it working.
> >>
> >> The value you're referring to isn't a "memory address" at all.
> >> It's a "pin configuration" value, containing the information like
> >> the location, purpose, sequence number of the given pin, and it's
> >> encoded in 32bit integer.  Basically it's merely a hint for drivers to
> >> configure the system properly.
> >>
> >> Refer to the HD-audio specification document for more details.
> >>
> >>
> >> Takashi
>