[Trac #42] Audio driver for AD1888 - sensor input mode

[Zarro Boogs per Child]

#42: Audio driver for AD1888 - sensor input mode
--------------------+-------------------------------------------------------
 Reporter:  jg      |        Owner:  blizzard  
     Type:  task    |       Status:  new       
 Priority:  high    |    Milestone:  rev1 alpha
Component:  kernel  |   Resolution:            
 Keywords:          |  
--------------------+-------------------------------------------------------
Comment (by jg):

 > Mark, Jaya; IIRC, someone told me that some microphones liked having the
 > bias voltage applied, and some did not.  Is my memory correct?  Is there
 > an ALSA control for this bias voltage)

 Yes. Please use the "V_REFOUT Enable" control, it is part of mainline,
 it determines whether or not the bias voltage is applied. The
 undocumented register in AD1888 "High Pass Filter Enable" is also part
 of mainline.

 http://git.kernel.org/git/?p=linux/kernel/git/perex/alsa-
 current.git;a=commit;h=02856b5684677b74095069c3be4774c2992e4fdc

-- 
Ticket URL: <http://dev.laptop.org/ticket/42#comment:2>
One Laptop Per Child <http://laptop.org/>