01:26 <marcan> povik: looks like after suspend/resume sometimes ivsense data gets "torn". on this model it's 8 channels (4c x I/V), but I noticed admac only knows window sizes up to 4, so maybe that's why sometimes it gets split down the middle when we have partial reads due to a suspend/resume?

01:27 <marcan> any idea if maybe macOS does something else there and it supports other window sizes? guess I need to trace it

01:27 <marcan> if it doesn't we'll need some other way to maintain frame alignment

03:58 <marcan> on j314:

03:58 <marcan> CHAN_BUSWIDTH[0] = 0x22 (WORD=2(W_32BIT), FRAME=2(F_4_WORDS))

03:58 <marcan> CHAN_BUSWIDTH[1] = 0xf21 (WORD=1(W_16BIT), FRAME=2(F_4_WORDS))

03:58 <marcan> hmmm

03:58 <marcan> what's that 0xf...

04:11 <marcan> nah but I think this is something else

04:27 <marcan> hm no, I tried resetting the rings after resume but that just wedges the DMA :/

07:28 <marcan> fixed it, it was a bad register setting

07:28 <marcan> there's an unknown 0xf00 in the bus config for in channels that apparently matters

13:04 <marcan> povik: do you think it's possible to implement a loopback pcm somehow in admac/mca? turns out non-ivsense machines have open loop speaker protection, and that would probably be the easiest way to safely implement that...

18:08 <marcan> that's just the iMacs I think though, hopefully ivsense is wired up on all the others including the mac mini/etc