Re: [DIGImend-users] Patching the hid-uclogic driver for UC-Logic tablet TWHA60 v3

[Nikolai K. <sp...@gm...>]

Hi Martin,

On 05/29/2015 04:32 AM, Martin Shepherd wrote:
> On the digimend tablets web page UC-Logic Tablet TWHA60 v3 is listed as
> unsupported. I have this tablet, and I've just managed to get its stylus
> working by making a very small change to hid-uclogic.c.  With this change,
> basic positioning, clicking the tip, and pressure sensitivity all appear to
> work correctly (at least in inkscape).
>
> The report descriptor for interface 0 has a different size in this tablet
> than previous versions, so the code that substitutes a fixed descriptor,
> based on this size, does nothing. To resolve this, I added an extra if() to
> check for the new descriptor size, and substituted a slightly different
> fixed descriptor. The only changes needed in the fixed descriptor, were to
> the logical maximums for X and Y, which should both be 2047, instead of the
> previous values of 39999 and 24999.
>
> I have placed the diff between the 3.13.0-53-generic (Ubuntu) version of the
> hid-uclogic.c file, and the fixed version, in the attached text file. I hope
> that this is the correct place to post this.

Contributions are welcome anywhere, although
DIG...@li... would be a bit more appropriate.

We actually have this tablet supported in the development version of our
out-of-tree driver:

https://github.com/DIGImend/digimend-kernel-drivers/archive/master.zip

Here's the GitHub page for it:
https://github.com/DIGImend/digimend-kernel-drivers

I need to update the website though.

Nick