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}; 61module_param_array(mouse_threshold, int, NULL, 0); 62 63#ifdef FIXED_ATARI_JOYSTICK 64extern int atari_mouse_buttons; 65#endif 66 67static struct input_dev *atamouse_dev; 68 69static void atamouse_interrupt(char *buf) 70{ 71 int buttons, dx, dy; 72 73 buttons = (buf[0] & 1) | ((buf[0] & 2) << 1); 74#ifdef FIXED_ATARI_JOYSTICK 75 buttons |= atari_mouse_buttons & 2; 76 atari_mouse_buttons = buttons; 77#endif 78 79 /* only relative events get here */ 80 dx = buf[1]; 81 dy = -buf[2]; 82 83 input_report_rel(atamouse_dev, REL_X, dx); 84 input_report_rel(atamouse_dev, REL_Y, dy); 85 86 input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x1); 87 input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2); 88 input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x4); 89 90 input_sync(atamouse_dev); 91 92 return; 93} 94 95static int atamouse_open(struct input_dev *dev) 96{ 97#ifdef FIXED_ATARI_JOYSTICK 98 atari_mouse_buttons = 0; 99#endif 100 ikbd_mouse_y0_top(); 101 ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]); 102 ikbd_mouse_rel_pos(); 103 atari_input_mouse_interrupt_hook = atamouse_interrupt; 104 105 return 0; 106} 107 108static void atamouse_close(struct input_dev *dev) 109{ 110 ikbd_mouse_disable(); 111 atari_mouse_interrupt_hook = NULL; 112} 113 114static int __init atamouse_init(void) 115{ 116 int error; 117 118 if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) 119 return -ENODEV; 120 121 if (!atari_keyb_init()) 122 return -ENODEV; 123 124 atamouse_dev = input_allocate_device(); 125 if (!atamouse_dev) 126 return -ENOMEM; 127 128 atamouse_dev->name = "Atari mouse"; 129 atamouse_dev->phys = "atamouse/input0"; 130 atamouse_dev->id.bustype = BUS_HOST; 131 atamouse_dev->id.vendor = 0x0001; 132 atamouse_dev->id.product = 0x0002; 133 atamouse_dev->id.version = 0x0100; 134 135 atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 136 atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 137 atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 138 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 139 140 atamouse_dev->open = atamouse_open; 141 atamouse_dev->close = atamouse_close; 142 143 error = input_register_device(atamouse_dev); 144 if (error) { 145 input_free_device(atamouse_dev); 146 return error; 147 } 148 149 return 0; 150} 151 152static void __exit atamouse_exit(void) 153{ 154 input_unregister_device(atamouse_dev); 155} 156 157module_init(atamouse_init); 158module_exit(atamouse_exit); 159