Hi, On Apr 21, 2017, at 20:01, Takashi Iwai <tiwai@xxxxxxx> wrote: > On Fri, 21 Apr 2017 19:22:16 +0200, > René Rebe wrote: >> >> On Apr 21, 2017, at 18:37, René Rebe <rene@xxxxxxxxxxxx> wrote: >> >>> Hello again, >>> >>> so I checked the MacBook schematics and it looks like the optical input should be directly connected to pin 47 (GPIO3/SPDIFIN) >>> >>> Maybe EAPD get’s accidentally / wrongly enabled? - Maybe someone can point me how to double check this in ALSA? >> >> I the meantime I finally figured out how this debug verb setting should work via: >> >> # hda-verb /dev/snd/hwC0D0 0x14 0x70C 0 >> nid = 0x14, verb = 0x70c, param = 0x0 >> value = 0x0 >> # hda-verb /dev/snd/hwC0D0 0x15 0x70C 0 >> nid = 0x15, verb = 0x70c, param = 0x0 >> value = 0x0 >> >> which made no difference either, and the ALC889 spec reads “when pin >> widget SPDIF-IN is not connected via the programming configuration >> register.” >> >> Could that be a missing bit? >> >> Any pointer or verbs I should poke welcome :-/ > > Well, from the codec POV, the SPDIF in is straightly connected from > the pin to the audio in widget, so there should be no special thing > there. The possibly missing setup is the vendor-specific things, and > Apple has been implementing the stuff always in a wild manner, > e.g. doing via VREF, GPIO or whatever. Did you check anything in this proc file codec setup I posted? As far as I can see on schematics for the MacBook (e.g.. google returned a APPLE_M42C_FA522_Macbook.pdf) the optical module RX output seems to be “directly" attached to the codec’s spdif-in pin. Yet on both, the MacBook as well on the MacBook Pro I found no way to get any digital input captured. The same setup works when booted in macOS, as well as when I plug in my digital audio source into my aging maudio delta 1010, with Linux, which, however, I do not want to continuously use for this setup, … It’s a pity, I don’t think there are so many other laptops with optical input :-/ René -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin http://exactcode.com | http://exactscan.com | http://ocrkit.com | http://t2-project.org | http://rene.rebe.de _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
