Hi, On May 22, 2017, at 8:15, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > Hi, > >> I noticed digital input would not show up at all on my PowerMac G5 >> 11,2, I see this in dmesg: >> >> [ 15.719952] snd-aoa-fabric-layout: Using PMF GPIOs >> [ 15.720519] snd-aoa-fabric-layout: can use this codec >> [ 15.760567] snd-aoa-codec-onyx: attached to onyx codec via i2c >> [ 15.760745] snd-aoa-fabric-layout: platform-onyx-codec-ref doesn't >> match! >> [ 15.760748] snd-aoa: fabric didn't like codec onyx >> >> and poking around a bit more I found a “topaz” codec apparently some >> Crystal Semiconductor CS84xx “Topaz” (S/PDIF digital input) showing >> up nowhere in the ALSA sources. >> >> Am I overlooking something, or was this lost in merging? Any hint >> would be appreciated. > > Neither, it was simply never implemented. > > I believe that in the past ~11 years since this got merged I *still* > haven't gotten any other hardware that had optical output, so I don't > think I could possibly test it :) > > Also, it's not as simple as output because there has to be clock > recovery etc. and I never could understand how alsa would handle that. > > Anyway, that's all I remember. I still have the G5 powermac, but it's > never powered on any more (I used to still use it for big endian > testing, but our latest HW generation makes the PCI-E bus in the system > unhappy enough that it won't even boot). Ouhm, a pity. Guess that it took ~11 years for someone to notice is an indicator of the percentage of users using the digital in ;-) You could plug a cable from the output to the input for testing, no? As I’m not familiar with the ALSA driver I guess I would rather spend a whole month or so trying to copy and paste something together, … René -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin DE Legal: Amtsgericht Berlin (Charlottenburg) HRB 105123B, Tax-ID#: DE251602478 Managing Director: René Rebe 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
