Laptop Touchscreen (was: Re: Roadmap 2021)

[Johannes Kliemann]

Hi John,

>  From what I've read, PC laptop touchscreens and pens generate USB HID
> events, so it shouldn't be necessary to write low-level drivers for each
> model.

Many PC platform touchscreens (and also some touchpads) use the I2C HID [1] 
interface. You may have a look into this protocol since it might enable a 
variety of devices.

Best regards,
Johannes

[1]: https://docs.microsoft.com/en-us/previous-versions/windows/hardware/
design/dn642101(v=vs.85)