[alsa-devel] Patch for Digidesign Mbox 2 (set sample rate)

[Viktor Radnai]

Hi there,

I have recently bought a Digidesign Mbox 2 Mini and found the lack of
support for 44100Hz sample rate in the driver limiting (the sample rate was
hard-set to 48000Hz by the original author even though the device supports
it, because he couldn't get the frame rate switching to work reliably).

I had a go at hacking the driver and came up with the following patch which
appears to work on the MBox 2 Mini:
https://pastebin.com/kzzTDj9T

I have built and tested this with Linux 4.8.15 without any realtime
patches. I am planning to pick up a "full size" Mbox 2 as well, in the
meantime if anyone on the list owns one I would appreciate if you could
test this and let me know the result. There is a possibility that it will
not work without the "magic" init sequence that I have removed because it
does not look like it's needed on the Mini. Although I would be a bit
surprised because the two devices are apparently identical to the point
that the Mini allows the use of it's physically nonexistent features.

Once someone could confirm that this works, I would like to get it merged.
This is my first attempt at submitting a patch for any Linux device driver
so please let me know if I need to do anything else :)

Cheers,
Vik
-- 
My other sig is hilarious