USB Wireless device support

[Bastien Nocera]

Hey,

On Wed, 2020-12-09 at 14:30 +0100, Bastien Nocera wrote:
> Hey,
> 
> I've recently bought a SteelSeries Arctis 1 wireless headset:
> https://steelseries.com/gaming-headsets/arctis-1-wireless-xbox
> and wanted to write a kernel driver to export a few features of the
> device, and needed some help getting started.
> 
> The receiver shows up as a audio class USB device, with extra
> features
> on a separate USB interface.[1]
> 
> The extra features that can be accessed are:
> - Presence detection. I wanted to use that so PulseAudio or Pipewire
> could make routing decisions based on whether the headset is
> available,
> or probably better, implementing a "jack detection" emulation for the
> main audio interface?
> - A slider to change the sidetone volume
> - Export the battery level
> 
> The latter is the only one I know how to do, so I'd be happy with any
> pointers or examples about the first two items.


I sent this in December and didn't get any answers, and I would
appreciate any guidance/examples if you have any into implementing
this.

I would imagine that the new features would be implemented through a
separate ALSA device with few features, which PulseAudio/Pipewire could
merge with the existing USB audio device.

Cheers

> [1]: User-space code that accesses those features:
>  
> https://github.com/Sapd/HeadsetControl/blob/master/src/devices/steelseries_arctis_1_xbox.c