linux-kernel - Re: SideWinder GameVoice driver

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Message-ID: <464EB44D.2040802@dbservice.com>
Date:	Sat, 19 May 2007 10:24:45 +0200
From:	Tomas Carnecky <tom@...ervice.com>
To:	Jiri Kosina <jikos@...os.cz>
CC:	Lee Revell <rlrevell@...-job.com>, linux-kernel@...r.kernel.org
Subject: Re: SideWinder GameVoice driver

Jiri Kosina wrote:
> On Fri, 18 May 2007, Lee Revell wrote:
> 
>>> Despite it's a Microsoft product, it's actually very nice and useful. A
>>> little pad with a few buttons and connectors for a headset. It's an USB
>>> device, but it doesn't represent itself as an input/HID device:
>>>    HID device not claimed by input or hiddev
>> Is the audio part of the device USB audio class compliant?
> 
> Seems like the device is a bit strange - it in fact, as far as my 
> understanding goes (see the previous posts in this thread), doesn't have 
> any noticeable USB audio capabilities at all - it is just a HID device 
> with a few buttons (plus additional audio connector, which only "forwards" 
> the sound to a real audio device).

Exactly, it isn't a 'sound' device at all. It has a USB plug and plain
old headset/microphone cables which have to be put into the soundcard.
The pad itself has connectors for the headset/microphone, but those are
simply forwarded to the soundcard (there's the 'mute' button which can
be used to mute the microphone, and a volume wheel, but that's all it
can do with the sound).

> 
> So it's just a trivial HID device with probably a bit strange report 
> descriptor, it seems to me. It even has only one interface (the HID one).
> 

Someone at Microsoft probably thought, Hey, there's this
Telephony/Headset category, why not use that?

tom
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