evdev is the generic input event interface. It passes the events generated in the kernel straight to the program, with timestamps…This should be the way for GPM and X to get keyboard and mouse events. It allows for multihead in X without any specific multihead kernel support. The event codes are the same on all architectures and are hardware independent. - SE / Input event codes

You can use blocking and nonblocking reads, and also select() on the /dev/input/eventX devices, and you’ll always get a whole number of input events on a read. - Event interface / input/input.txt

• linux/input-event-codes.h
• evtest - Input device event monitor and query tool
  • evtest.c
  • libevdev - a wrapper library for evdev devices.

• Writing Linux Mouse Drivers

• Internal input event handling in the Linux kernel and the Android userspace - describe poll on multi /dev/input/event*

• plato/src/input/remarkable.rs

• Linux input device events, how to retrieve initial state