The document discusses the Linux mouse driver and input subsystem. It describes the basic flow of mouse events from the physical mouse device, through the input core and input handler, to user applications. Key components include the mouse driver, input subsystem, event handler, and functions like module_init() and mousedev_event(). The code traces the initialization process, where the mouse device is registered with the input handler and input subsystem on module load, and mouse movement and button events are processed and passed to userspace.

1. Linux Mouse Driver /PS2 By Sean Chen 2010/04/30

5. Flow Chart 4 Mouse Input sub System 4 Mouse Device Driver input_handler . event = mousedev_event, . connect = mousedev_connect , .disconnect = mousedev_disconnect, .fops = &mousedev_fops, .minor = MOUSEDEV_MINOR_BASE, .name = "mousedev", .id_table = mousedev_ids, mousedev_event case EV_ABS: case EV_REL: case EV_KEY: case EV_SYN: mousedev_connect .flags : .evbit : .keybit : .relbit : .absbit : … Create_mouse_device User Application