From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: lsusb -v for AKAI's new EIE pro interface
Date: Mon, 02 Apr 2012 10:04:53 +0200
Message-ID: <4F795DA5.1070006@ladisch.de>
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To: Grant Diffey <gdiffey@gmail.com>
Cc: alsa-devel@alsa-project.org, Daniel Mack <zonque@gmail.com>
List-Id: alsa-devel@alsa-project.org

Grant Diffey wrote:
> So device is 4 in 4 out with inserts and midi
>
> Composite with 2 interfaces. I can't tell if they're independent midi and
> audio or more essoteric
>
> anyone want to take a punt?
>
>    6.   bDeviceClass          255 Vendor Specific Class
>    7.   bDeviceSubClass       255 Vendor Specific Subclass
>    8.   bDeviceProtocol       255 Vendor Specific Protocol

So far, so bad.

>    38.     Interface Descriptor:
>    51.         bEndpointAddress     0x02  EP 2 OUT
>    53.           Transfer Type            Isochronous
>    61.         bEndpointAddress     0x83  EP 3 IN
>    63.           Transfer Type            Bulk
>    71.         bEndpointAddress     0x04  EP 4 OUT
>    73.           Transfer Type            Bulk

Using bulk endpoints in an interface also used for isochronous
transfers is not supported by the current driver.


Regards,
Clemens