drm-touch 0.1.0

Touch/pointer input for Raspberry Pi and embedded Linux: evdev touchscreen (or mouse) -> normalized screen-pixel events

drm_touch

Low-level touch input for the drm-stack — the input twin of drm_display. Reads touchscreens directly from the Linux evdev subsystem (/dev/input/eventN), with no X11, Wayland, or display server, and emits normalized screen-pixel touch events.

Python package: drm_touch (design stage — see outline.md).

drm_touch ──(x,y,phase)──▶ app ──hit_test()──▶ drm_screen
                            └──── submit(feedback) ──▶ drm_screen ─▶ drm_display

• Standardized transport: evdev + kernel multitouch protocol (no server needed)
• Normalizes raw device units → screen pixels (the one coordinate boundary)
• The app is in control: events go to the app, which queries drm_screen's hit_test() and submits feedback — drm_screen holds no callbacks or app logic
• MVP scope: mouse-like tap / press / release / drag (single touch)

Part of the drm_stack.