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

[Raymond Yau]

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