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From: Clemens Ladisch <clemens@ladisch.de>
To: Grant Diffey <gdiffey@gmail.com>
Cc: alsa-devel@alsa-project.org, Daniel Mack <zonque@gmail.com>
Subject: Re: lsusb -v for AKAI's new EIE pro interface
Date: Mon, 02 Apr 2012 10:04:53 +0200	[thread overview]
Message-ID: <4F795DA5.1070006@ladisch.de> (raw)
In-Reply-To: <CACckToWdWZQFiFS_2GkjR=_0=TDdVApDxfwB0c_3HJ4bvjCejw@mail.gmail.com>

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

      reply	other threads:[~2012-04-02  8:01 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-30 22:03 lsusb -v for AKAI's new EIE pro interface Grant Diffey
2012-04-02  8:04 ` Clemens Ladisch [this message]

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