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/uaccess.h> 51 #include <asm/atarihw.h> 52 #include <asm/atarikb.h> 53 #include <asm/atariints.h> 54 55 MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>"); 56 MODULE_DESCRIPTION("Atari mouse driver"); 57 MODULE_LICENSE("GPL"); 58 59 static int mouse_threshold[2] = {2, 2}; 60 module_param_array(mouse_threshold, int, NULL, 0); 61 62 #ifdef FIXED_ATARI_JOYSTICK 63 extern int atari_mouse_buttons; 64 #endif 65 66 static struct input_dev *atamouse_dev; 67 68 static void atamouse_interrupt(char *buf) 69 { 70 int buttons, dx, dy; 71 72 buttons = (buf[0] & 1) | ((buf[0] & 2) << 1); 73 #ifdef FIXED_ATARI_JOYSTICK 74 buttons |= atari_mouse_buttons & 2; 75 atari_mouse_buttons = buttons; 76 #endif 77 78 /* only relative events get here */ 79 dx = buf[1]; 80 dy = buf[2]; 81 82 input_report_rel(atamouse_dev, REL_X, dx); 83 input_report_rel(atamouse_dev, REL_Y, dy); 84 85 input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x4); 86 input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2); 87 input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x1); 88 89 input_sync(atamouse_dev); 90 91 return; 92 } 93 94 static int atamouse_open(struct input_dev *dev) 95 { 96 #ifdef FIXED_ATARI_JOYSTICK 97 atari_mouse_buttons = 0; 98 #endif 99 ikbd_mouse_y0_top(); 100 ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]); 101 ikbd_mouse_rel_pos(); 102 atari_input_mouse_interrupt_hook = atamouse_interrupt; 103 104 return 0; 105 } 106 107 static void atamouse_close(struct input_dev *dev) 108 { 109 ikbd_mouse_disable(); 110 atari_input_mouse_interrupt_hook = NULL; 111 } 112 113 static int __init atamouse_init(void) 114 { 115 int error; 116 117 if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP)) 118 return -ENODEV; 119 120 error = atari_keyb_init(); 121 if (error) 122 return error; 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 } 151 152 static void __exit atamouse_exit(void) 153 { 154 input_unregister_device(atamouse_dev); 155 } 156 157 module_init(atamouse_init); 158 module_exit(atamouse_exit); 159