As far as analog input mode is concerned, it isn't implemented in the driver yet.
Details can be found at: http://dev.laptop.org/ticket/42 Which captures the information we used to make it work in May/June. I'm sure Marcelo would be happy to have some help if someone wants to go complete the driver work. - Jim On Wed, 2006-10-11 at 16:24 +0200, Bert Freudenberg wrote: > Am 11.10.2006 um 15:51 schrieb Jim Gettys: > > > On Wed, 2006-10-11 at 15:13 +0200, Bert Freudenberg wrote: > >> Hi, > >> > >> I connected a headset (analog mic and phones) to an A-test board. > >> Sound output works fine after "alsaunmute". I have difficulties with > >> input, though. > >> > >> I unmuted "Mic" in alsamixer, and tried arecord. Nothing is recorded. > >> "V_REFOUT" does make a difference, it connects in and out so I hear > >> what I'm saying directly (even more so if I enable "Mic boost"). > >> However, in arecord I still get silence. > >> > >> So - what do I need to do for mic recording? Does this have to do > >> with the analog input, do I have to switch that off? > > > > Of course you have to switch it off; otherwise we'd have it on all the > > time and have no control at all. > > That's why I assumed it would be off by default. > > The only documentation I could find is in a mailing list thread > (http://mailman.laptop.org/pipermail/devel/2006-July/000672.html): > > *a- tell the EC to turn on MIC_AC (ie: bypass C35 and R25) [ OLPC > specific ] > *b- tell ALSA to disable VREFOUT and the high pass filter [ AD1888 > specific ] > > So how do I "tell the EC to turn off MIC_AC"? > > > Whether this is actually your problem, only you can tell. > > Well, is it normal that enabling this loops the mic directly to the > phones? > > - Bert - > _______________________________________________ > Devel mailing list > [email protected] > http://mailman.laptop.org/mailman/listinfo/devel -- Jim Gettys One Laptop Per Child _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
