1/* 2 * Atari mouse driver for Linux/m68k 3 * 4 * Copyright (c) 2005 Michael Schmitz 5 * 6 * Based on: 7 * Amiga mouse driver for Linux/m68k 8 * 9 * Copyright (c) 2000-2002 Vojtech Pavlik 10 * 11 */ 12/* 13 * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c 14 * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard 15 * interrupt is shared with the MIDI ACIA so MIDI data also get handled there). 16 * This driver only deals with handing key events off to the input layer. 17 * 18 * Largely based on the old: 19 * 20 * Atari Mouse Driver for Linux 21 * by Robert de Vries (robert@and.nl) 19Jul93 22 * 23 * 16 Nov 1994 Andreas Schwab 24 * Compatibility with busmouse 25 * Support for three button mouse (shamelessly stolen from MiNT) 26 * third button wired to one of the joystick directions on joystick 1 27 * 28 * 1996/02/11 Andreas Schwab 29 * Module support 30 * Allow multiple open's 31 * 32 * Converted to use new generic busmouse code. 5 Apr 1998 33 * Russell King <rmk@arm.uk.linux.org> 34 */ 35 36 37/* 38 * This program is free software; you can redistribute it and/or modify it 39 * under the terms of the GNU General Public License version 2 as published by 40 * the Free Software Foundation 41 */ 42 43#include <linux/module.h> 44#include <linux/init.h> 45#include <linux/input.h> 46#include <linux/interrupt.h> 47 48#include <asm/irq.h> 49#include <asm/setup.h> 50#include <asm/system.h> 51#include <asm/uaccess.h> 52#include <asm/atarihw.h> 53#include <asm/atarikb.h> 54#include <asm/atariints.h> 55 56MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); 57MODULE_DESCRIPTION("Atari mouse driver"); 58MODULE_LICENSE("GPL"); 59 60static int mouse_threshold[2] = {2,2}; 61 62#ifdef __MODULE__ 63MODULE_PARM(mouse_threshold, "2i"); 64#endif 65#ifdef FIXED_ATARI_JOYSTICK 66extern int atari_mouse_buttons; 67#endif 68static int atamouse_used = 0; 69 70static struct input_dev *atamouse_dev; 71 72static void atamouse_interrupt(char *buf) 73{ 74 int buttons, dx, dy; 75 76/* ikbd_mouse_disable(); */ 77 78 buttons = (buf[0] & 1) | ((buf[0] & 2) << 1); 79#ifdef FIXED_ATARI_JOYSTICK 80 buttons |= atari_mouse_buttons & 2; 81 atari_mouse_buttons = buttons; 82#endif 83/* ikbd_mouse_rel_pos(); */ 84 85 /* only relative events get here */ 86 dx = buf[1]; 87 dy = -buf[2]; 88 89 input_report_rel(atamouse_dev, REL_X, dx); 90 input_report_rel(atamouse_dev, REL_Y, dy); 91 92 input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x1); 93 input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2); 94 input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x4); 95 96 input_sync(atamouse_dev); 97 98 return; 99} 100 101static int atamouse_open(struct input_dev *dev) 102{ 103 if (atamouse_used++) 104 return 0; 105 106#ifdef FIXED_ATARI_JOYSTICK 107 atari_mouse_buttons = 0; 108#endif 109 ikbd_mouse_y0_top(); 110 ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]); 111 ikbd_mouse_rel_pos(); 112 atari_input_mouse_interrupt_hook = atamouse_interrupt; 113 return 0; 114} 115 116static void atamouse_close(struct input_dev *dev) 117{ 118 if (!--atamouse_used) { 119 ikbd_mouse_disable(); 120 atari_mouse_interrupt_hook = NULL; 121 } 122} 123 124static int __init atamouse_init(void) 125{ 126 if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) 127 return -ENODEV; 128 129 if (!(atamouse_dev = input_allocate_device())) 130 return -ENOMEM; 131 132 if (!(atari_keyb_init())) 133 return -ENODEV; 134 135 atamouse_dev->name = "Atari mouse"; 136 atamouse_dev->phys = "atamouse/input0"; 137 atamouse_dev->id.bustype = BUS_ATARI; 138 atamouse_dev->id.vendor = 0x0001; 139 atamouse_dev->id.product = 0x0002; 140 atamouse_dev->id.version = 0x0100; 141 142 atamouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); 143 atamouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); 144 atamouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); 145 atamouse_dev->open = atamouse_open; 146 atamouse_dev->close = atamouse_close; 147 148 input_register_device(atamouse_dev); 149 150 printk(KERN_INFO "input: %s at keyboard ACIA\n", atamouse_dev->name); 151 return 0; 152} 153 154static void __exit atamouse_exit(void) 155{ 156 input_unregister_device(atamouse_dev); 157} 158 159module_init(atamouse_init); 160module_exit(atamouse_exit); 161