AMD Publishes New Linux Audio Driver Code For Yellow Carp / ACP6x Audio Co-Processor

[phoronix]

Phoronix: AMD Publishes New Linux Audio Driver Code For Yellow Carp / ACP6x Audio Co-Processor

It was just with Linux 5.15 last month that AMD added a new audio driver for Van Gogh APUs sporting an ACP 5.x audio co-processor (ACP) while now a new driver has been posted for Yellow Carp / Rembrandt with it introducing new ACP 6.x audio co-processor IP...

https://www.phoronix.com/scan.php?page=news_item&px=AMD-Yellow-Carp-Audio-Driver

[jaxa]

Renoir = ACP 3.x
Cezanne = ACP 4.x (AFAICT)
Van Gogh = ACP 5.x
Rembrandt = ACP 6.x

Any differences between these or do they just like increasing the number? I don't think the marketing dept has anything at all to say about the audio co-processor. At least not since TrueAudio landed in Thief and a few other games around 2014.

[rene]

Co-Processor sounds a bit stretched. I took a quick look and this looks like plain DMA output, nothing Digital Signal Processing like. From a co processor I would expect it can do some DSP, some effects, EQ, etc. Also if that is the case: Why the heck can vendors not use standard PCI interfaces like HDA or so instead of requiring this gazillion of otherwise useless drivers? :-/

[Adarion]

I also wonder about the nature of these "ACPs". Wasn't there even a change from something like a real ASIC to something that was done in shared shader units of the GPU? What are actually parts of this audio processing block? ( https://en.wikipedia.org/wiki/AMD_TrueAudio doesn't say too much. There's an image in the wiki which still leaves me wonderiung https://en.wikipedia.org/wiki/File:A...and_layers.svg )