Daniel C. Casimiro wrote:
Hi,

I have a set of Altec Lansing ADA305 Speakers that can use USB to control volume, base, treble, etc. Now, I noticed that the USB Audio Class specification is capable of handling these parameters. However, the usb audio module does not claim these speakers. I tried kernels 2.4.20 (gentoo) and a vanilla 2.6.0-test9.

The device below is neither an audio device nor a HID device. Notice how both "Device Class" and "Interface Class" lines list value 0xff, which is a vendor-specific class. You'd need to find out what protocol they use, and write some kind of device driver that understands it.

- Dave

ADA305 Speakers
Manufacturer: ALTEC LANSING Multimedia
Speed: 1.5Mb/s (low)
USB Version:  1.00
Device Class: ff(vend.)
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Vendor Id: 04d2
Product Id: 0305
Revision Number:  0.00

Config Number: 1
   Number of Interfaces: 1
   Attributes: 40
   MaxPower Needed:   0mA

   Interface Number: 0
       Name: (none)
       Alternate Number: 0
       Class: ff(vend.)
       Sub Class: 1
       Protocol: 0
       Number of Endpoints: 1

           Endpoint Address: 81
           Direction: in
           Attribute: 3
           Type: Int.
           Max Packet Size: 2
           Interval: 32ms



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