// SPDX-License-Identifier: GPL-2.0-only/* *  Atari mouse driver for Linux/m68k * *  Copyright (c) 2005 Michael Schmitz * *  Based on: *  Amiga mouse driver for Linux/m68k * *  Copyright (c) 2000-2002 Vojtech Pavlik *//* * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). * This driver only deals with handing key events off to the input layer. * * Largely based on the old: * * Atari Mouse Driver for Linux * by Robert de Vries (robert@and.nl) 19Jul93 * * 16 Nov 1994 Andreas Schwab * Compatibility with busmouse * Support for three button mouse (shamelessly stolen from MiNT) * third button wired to one of the joystick directions on joystick 1 * * 1996/02/11 Andreas Schwab * Module support * Allow multiple open's * * Converted to use new generic busmouse code.  5 Apr 1998 *   Russell King <rmk@arm.uk.linux.org> */   #include <linux/module.h>#include <linux/init.h>#include <linux/input.h>#include <linux/interrupt.h> #include <asm/irq.h>#include <asm/setup.h>#include <linux/uaccess.h>#include <asm/atarihw.h>#include <asm/atarikb.h>#include <asm/atariints.h> MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");MODULE_DESCRIPTION("Atari mouse driver");MODULE_LICENSE("GPL"); static int mouse_threshold[2] = {2, 2};module_param_array(mouse_threshold, int, NULL, 0); #ifdef FIXED_ATARI_JOYSTICKextern int atari_mouse_buttons;#endif static struct input_dev *atamouse_dev; static void atamouse_interrupt(char *buf){	int buttons, dx, dy; 	buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);#ifdef FIXED_ATARI_JOYSTICK	buttons |= atari_mouse_buttons & 2;	atari_mouse_buttons = buttons;#endif 	/* only relative events get here */	dx = buf[1];	dy = buf[2]; 	input_report_rel(atamouse_dev, REL_X, dx);	input_report_rel(atamouse_dev, REL_Y, dy); 	input_report_key(atamouse_dev, BTN_LEFT,   buttons & 0x4);	input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);	input_report_key(atamouse_dev, BTN_RIGHT,  buttons & 0x1); 	input_sync(atamouse_dev); 	return;} static int atamouse_open(struct input_dev *dev){#ifdef FIXED_ATARI_JOYSTICK	atari_mouse_buttons = 0;#endif	ikbd_mouse_y0_top();	ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);	ikbd_mouse_rel_pos();	atari_input_mouse_interrupt_hook = atamouse_interrupt; 	return 0;} static void atamouse_close(struct input_dev *dev){	ikbd_mouse_disable();	atari_input_mouse_interrupt_hook = NULL;} static int __init atamouse_init(void){	int error; 	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))		return -ENODEV; 	error = atari_keyb_init();	if (error)		return error; 	atamouse_dev = input_allocate_device();	if (!atamouse_dev)		return -ENOMEM; 	atamouse_dev->name = "Atari mouse";	atamouse_dev->phys = "atamouse/input0";	atamouse_dev->id.bustype = BUS_HOST;	atamouse_dev->id.vendor = 0x0001;	atamouse_dev->id.product = 0x0002;	atamouse_dev->id.version = 0x0100; 	atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);	atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);	atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 	atamouse_dev->open = atamouse_open;	atamouse_dev->close = atamouse_close; 	error = input_register_device(atamouse_dev);	if (error) {		input_free_device(atamouse_dev);		return error;	} 	return 0;} static void __exit atamouse_exit(void){	input_unregister_device(atamouse_dev);} module_init(atamouse_init);module_exit(atamouse_exit);