This is a concept rewrite of the Surface Dial userspace driver. It is kept separate from the existing daemon so the new event model can be tested without touching the current code.

Goals

Multitouch scrolling first.
Regular wheel scrolling as a fallback mode.
Dial sensitivity adjustment by holding the button and rotating.
Desktop notification feedback for sensitivity changes.
Small, explicit state machines instead of mode/thread sprawl.

Run

cargo run --manifest-path renewed_driver/Cargo.toml -- --mode multitouch

Regular wheel mode:

cargo run --manifest-path renewed_driver/Cargo.toml -- --mode wheel

Multitouch timing can be tuned without recompiling:

cargo run --manifest-path renewed_driver/Cargo.toml -- --mode multitouch --mt-idle-ms 100 --mt-idle-max-ms 1500 --mt-settle-ms 80

The process still needs access to the Surface Dial event device and /dev/uinput, just like the original daemon.

Controls

Rotate: scroll.
Hold and rotate: change sensitivity.
Release after changing sensitivity: resume scroll mode.

Sensitivity levels are 1 through 32. KDE displays the current value through the native OSD text path, with desktop notifications used only as a fallback.

Documentation

Detailed architecture, behavior, protocol, install, and troubleshooting notes live under doc/.