Re: [PATCH 0/2 ] Surface Pro 2 HID sensor, wacom, keyboard/multitouch composite device

2014-03-07 16:53 GMT+01:00 Derya [off-list ref]:

The MS Surface Pro 2 has a very annoying USB composite device on port 2.3.
It has 3 interfaces:
- Interface 0 is the sensor-hub
- Interface 1 is the wacom digitizer² (it's one without finger input, there
is an atmel digitizer on port 2.4 for finger input)
- Interface 2 is the keyboard, if a keyboard cover is attached.

This USB composite device changes it product id depending if and which
keyboard cover is attached.
Each of this hid devices contains several collections, this complicated
everything.
I have uploaded a lsusb output to: http://pastebin.com/Jun5sa2t

We also need the HID_QUIRK_NOGET for this usb composite device, without it
hid-sensor-hub fails with a submit urb failure evertime a keyboard cover is
(de)attached and it takes some seconds until the keyboard and wacom
digitizer responds.

I had a similar issue while implementing Sidewinder X4 support. Can
you check the output of hid->type for each of these interfaces? I was
able to differentiate between the interfaces on my devices by checking
"hid->type", this might help here, too.
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