[PATCH libinput 0/24] Tablet support

[Jason Gerecke]

On Thu, May 22, 2014 at 8:45 AM, Bill Spitzak <spitzak at gmail.com> wrote:
>>>    - One device has 2 strips, which report on ABS_RX/RY (radial??).
>>> Min/max
>>>      are 0..4096, but the reported values are 1,2,4,8,16... So
>>> effectively
>>>      a log2 scale, or more graphically a bit shifting over a bunch of 0s,
>>>      which is somewhat more resembling to the physical action on the
>>> strip.
>>
>> Since I'm on a deadline for this and making changes to this in the
>> kernel would take too long, I don't think I'm going to advocate for
>> changing this behavior right now. Although I do agree that eventually it
>> should be changed.
>
>
> Does this device turn on more than 1 bit for multitouch on the strips?
>

No. Neither the touchstrips nor touchrings are multitouch, and I don't
see any practical reason for them to be made multitouch in the future
(on our devices they're intended to act like scroll wheels). Certainly
such hardware could be made[1] but I don't think representing it to
clients as a bitvector would be optimal.

[1]: http://hackaday.com/2012/06/09/theremin-takes-the-touch-out-of-multitouch/

Jason
---
Now instead of four in the eights place /
you’ve got three, ‘Cause you added one  /
(That is to say, eight) to the two,     /
But you can’t take seven from three,    /
So you look at the sixty-fours....