[alsa-devel] HDA intel, wired headset w/mic, jack mic detect

[Takashi Iwai]

At Tue, 06 Mar 2012 12:25:12 -0800,
Kevin Hilman wrote:
> 
> Takashi Iwai <tiwai at suse.de> writes:
> 
> > At Tue, 6 Mar 2012 09:28:12 +0800,
> > Raymond Yau wrote:
> >> 
> >> 2012/3/6, Kevin Hilman <khilman at ti.com>:
> >> > Raymond Yau <superquad.vortex2 at gmail.com> writes:
> >> >
> >> >> 2012/3/3, Kevin Hilman <khilman at ti.com>:
> >> >>> Raymond Yau <superquad.vortex2 at gmail.com> writes:
> >> >>>
> >> >>>> 2012/3/2, Kevin Hilman <khilman at ti.com>:
> >> >>>>
> >> >>>>
> >> >>>>>> Does your headset/mic has a TRRS (Tip, ring, ring, sleeve) connector
> >> >>>>>> instead of TRS (Tip, ring, sleeve) connector ?
> >> >>>>
> >> >>>>> Yes.  It's TRRS.
> >> >>>>
> >> >>>> Does it mean that the headset/mic is a mono mic ?
> >> >>>>
> >> >>>> Is the internal mic mono or stereo ?
> >> >>>
> >> >>> I believe it's mono.  Based on vumeter activity, and the fact that
> >> >>> changing only one slider in hda_analyzer is needed to quiet/mute the
> >> >>> mic.
> >> >>>
> >> >>
> >> >> Not sure any difference between cs4206 and cs4207
> >> >>
> >> >> It seem that you can select ADC1 and ADC2 channel mode in cs4207
> >> >
> >> >> ‘00’b - ADC2 left channel is mapped to HDA left
> >> >> channel and ADC2 right channel is mapped HDA
> >> >> right channel (normal mode).
> >> >> ‘01’b - ADC2 left channel is mapped to both HDA
> >> >> left and right channels. ADC2 right channel is
> >> >> discarded (mono mode).
> >> >> ‘10’b - ADC2 right channel is mapped to both
> >> >> HDA left and right channels. ADC2 left channel is
> >> >> discarded (alternate mono mode).
> >> >> ‘11’b - ADC2 left channel is mapped to HDA right
> >> >> channel and ADC2 right channel is mapped to
> >> >> HDA left channel (channel swap mode).
> >> >
> >> > Do any of the hda tools allow me to tweak this from userspace?
> >> >
> >> >
> >> 
> >> you should ask Takarshi as he added this patch, he may know whether
> >> cs4206 support the above feature
> >> 
> >> http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commitdiff;h=40c20fa05a29766565f56ede17d0ffa539e1c9a9;hp=ea35929b886975a240660b3ba6c61826761731ad
> >
> > You can play with hda-emu to send vendor-specific COEF, as found in
> > the commit above.  But it's at your own risk; the patch I made is just
> > a translation from other information I've got from Cirrus at that
> > time.
> 
> Unfortunately, I'm not really familiar with audio codecs, and am finding
> that undersanding the verbs and and sending the right ones with the
> right coef (and finding out what was actually written) seems to be a bit
> out of my league.
> 
> If someone can suggest what to try with hda-emu, I'm willing, but
> otherwise I guess I have to opt for an external USB audio adapater for
> the headset. :(

Ah, of course, I meant hda-verb, not hda-emu...


Takashi