[alsa-devel] How to add a new MIDI device to the usbaudio driver

[Daniel Mack]

On Tue, Aug 23, 2011 at 3:28 PM, Kristian Amlie <kristian at amlie.name> wrote:
> On 08/23/11 15:16, Daniel Mack wrote:
>> On Tue, Aug 23, 2011 at 3:12 PM, Kristian Amlie <kristian at amlie.name> wrote:
>>> Here is the output from one complete run of cu, including connecting,
>>> pressing a key once on the instrument and killing cu afterwards:
>> ...
>> And now once again without killing cu, please. I'm interested in the
>> last commands that occur before the device starts working.
>
> Here you go:
>
> [21535.096008] change_speed(): urb_value: 16696, urb_index: 0
> [21535.097918] update_mctrl(): urb_value: 771, priv->interface: 0
> [21535.099917] change_speed(): urb_value: 49230, urb_index: 0
> [21535.103055] change_speed(): urb_value: 49230, urb_index: 0
> [21535.106037] change_speed(): urb_value: 49230, urb_index: 0

Ok, then let's try the attached patch. In case it doesn't work, you
might need to check whether there are any more ctrl requests sent by
the fdti_sio driver that need to be added to the MIDI driver as well.


Daniel
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