[alsa-devel] Mindprint DI-MOD USB

[Clemens Ladisch]

Christian Schumann wrote:
> The DI-MOD USB is pretty usb-audio class compliant with the exception of
> the spdif output, which has to be activated manaually. I did this with
> the windows driver, but it would be nice to be able to do that with
> ALSA. 
> I have a Envoice MkII with the DI-MOD USB, and my suggestion would be to
> automatically enable the spdif output when initializing the driver. The
> spdif output does not have any other effect on the card functionality.

That is, it doesn't affect the analog output in any way?

> Digital: Vendorrequest, Typ: Out/Vendorinterface, bReq setCur, wVal 0x00,
> wIndex 0x04, data length 1: data 0x01
> Analog: Vendorrequest, Typ: Out/Vendorinterface, bReq setCur, wVal 0x00,
> wIndex 0x02, data length 1: data 0x00
> 
> I don't have experience in writing drivers, but if someone can give me a
> clue where to start, I could give it a try.

Have a look at the *_boot_quirk functions in usbaudio.c.


Regards,
Clemens