On Sun, Apr 26, 2020 at 2:14 PM Bastien Nocera [off-list ref] wrote:

On Sun, 2020-04-26 at 13:42 -0700, Roderick Colenbrander wrote:

quoted

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quoted

I really wonder how a device like this should be handled. It looks
like the device can also handle a bunch of other classic Nintendo
controllers.

Is there anyway of detection this adapter? It feels nasty to have to
hack in quirks for this device...

The end game isn't very different from how we handle XBox 360, or
PS3/PS4 "clone" devices.

Those devices (the adapters) work on the actual Nintendo Switch
hardware, so should probably work with the driver that handles the same
type of hardware on Linux.

(resend in plain text)

I agree it probably makes sense to handle in this driver. I'm worried
about the application level implications. We have been doing a lot of
work e.g. on Android to try to make gamepads consistent. It is weird
to have a "Switch controller" with different features as applications
make assumptions and don't expect there to be multiple versions of a
particular controller. Any button mapping files would potentially be
wrong for those too, certain features are not there (e.g. no sensors
or no lights or rumble) or if they are the behaviour is different
(e.g. HD rumble vs a classic rumble motor).

Ideally we would do some kind of "fixup" to change the device name and
or replace the device ids to at least separate them.

Roderick