[alsa-devel] sound: usb-audio: full capture/playback/spdif support for Digidesign Mbox 2

Damien Zammit damien.zammit at gmail.com
Mon Nov 29 14:03:26 CET 2010

Hi Daniel,

I am confused by the git repository of alsa.  There seems to be two
copies of it, one in alsa-kernel and one in alsa-driver.  alsa-driver
seems to "patch" the alsa-kernel and then build it.  I have taken one
of the latest snapshots of alsa-driver and modified the alsa-kernel
directory and it now compiles and the device works.  What do I
generate the patch against?

I can't be expected to fill in all the detail regarding #if
KERNEL_VERSION < .... etc I am not that familiar with the kernel.
What do you suggest to make your life easier for reviewing?


On Fri, Nov 26, 2010 at 8:39 AM, Daniel Mack <zonque at gmail.com> wrote:
> On 11/24/2010 04:59 AM, Damien Zammit wrote:
>> I have put together full support for Digidesign Mbox 2, but it needs
>> someone to help me merge it into alsa.  I haven't seen the latest
>> snd-usb-audio code since last year, it seems to have branched into
>> multiple files.
>> I have worked out how the Digidesign Mbox 2 needs to be configured, it
>> supports SPDIF i/o simultaneously with analogue but can be toggled on
>> and off by using different altsettings.
>> Also the sample clock rate must be configured via a special method.
> Cool, thanks for sharing this.
> Could you put your changes into a real patch, preferably generated by
> git, and post it again please? That makes reviewing much easier.
> Thanks,
> Daniel
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