Re: Huion tablet support

On Thu, 20 Feb 2025, adr wrote:
> So what do you think? Should a new axis be added to wscons only
> for this? Should the z axis be used for pressure on these devices?
> (and w for tilt?)

The Z axis could be setup as pressure at
sys/dev/hid/hidms.c:hidms_setup()

[...]
         /* Try the wheel first as the Z activator since it's tradition. */
         hl = hid_locate(desc,
                         size,
                         HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_WHEEL),
                         id,
[...]
         /*
          * The horizontal component of the scrollball can also be given by
          * Application Control Pan in the Consumer page, so if we didnt see
          * any Z then check that.
          */
         if (!hl) {
                 hl = hid_locate(desc,
                                 size,
                                 HID_USAGE2(HUP_CONSUMER, HUC_AC_PAN),
                                 id,
[...]

I could addd a similar block to check for HUD_TIP_PRESSURE after
that.  If the device has a wheel the pressure wont be set as z.
Another solution could be proposed if someone encounters such a
device.

But the ws driver should be modified as Yorick did.

If there is no concense in the use of Z for tip pressure, there is
no point in taking the trouble of doing this.

Regards.
adr