1 /* 2 * $Id: inport.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ 3 * 4 * Copyright (c) 1999-2001 Vojtech Pavlik 5 * 6 * Based on the work of: 7 * Teemu Rantanen Derrick Cole 8 * Peter Cervasio Christoph Niemann 9 * Philip Blundell Russell King 10 * Bob Harris 11 */ 12 13 /* 14 * Inport (ATI XL and Microsoft) busmouse driver for Linux 15 */ 16 17 /* 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2 of the License, or 21 * (at your option) any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 31 * 32 * Should you need to contact me, the author, you can do so either by 33 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 34 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 35 */ 36 37 #include <linux/module.h> 38 #include <linux/moduleparam.h> 39 #include <linux/ioport.h> 40 #include <linux/init.h> 41 #include <linux/interrupt.h> 42 #include <linux/input.h> 43 44 #include <asm/io.h> 45 #include <asm/irq.h> 46 47 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 48 MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver"); 49 MODULE_LICENSE("GPL"); 50 51 #define INPORT_BASE 0x23c 52 #define INPORT_EXTENT 4 53 54 #define INPORT_CONTROL_PORT INPORT_BASE + 0 55 #define INPORT_DATA_PORT INPORT_BASE + 1 56 #define INPORT_SIGNATURE_PORT INPORT_BASE + 2 57 58 #define INPORT_REG_BTNS 0x00 59 #define INPORT_REG_X 0x01 60 #define INPORT_REG_Y 0x02 61 #define INPORT_REG_MODE 0x07 62 #define INPORT_RESET 0x80 63 64 #ifdef CONFIG_MOUSE_ATIXL 65 #define INPORT_NAME "ATI XL Mouse" 66 #define INPORT_VENDOR 0x0002 67 #define INPORT_SPEED_30HZ 0x01 68 #define INPORT_SPEED_50HZ 0x02 69 #define INPORT_SPEED_100HZ 0x03 70 #define INPORT_SPEED_200HZ 0x04 71 #define INPORT_MODE_BASE INPORT_SPEED_100HZ 72 #define INPORT_MODE_IRQ 0x08 73 #else 74 #define INPORT_NAME "Microsoft InPort Mouse" 75 #define INPORT_VENDOR 0x0001 76 #define INPORT_MODE_BASE 0x10 77 #define INPORT_MODE_IRQ 0x01 78 #endif 79 #define INPORT_MODE_HOLD 0x20 80 81 #define INPORT_IRQ 5 82 83 static int inport_irq = INPORT_IRQ; 84 module_param_named(irq, inport_irq, uint, 0); 85 MODULE_PARM_DESC(irq, "IRQ number (5=default)"); 86 87 static struct input_dev *inport_dev; 88 89 static irqreturn_t inport_interrupt(int irq, void *dev_id) 90 { 91 unsigned char buttons; 92 93 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 94 outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 95 96 outb(INPORT_REG_X, INPORT_CONTROL_PORT); 97 input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT)); 98 99 outb(INPORT_REG_Y, INPORT_CONTROL_PORT); 100 input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT)); 101 102 outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); 103 buttons = inb(INPORT_DATA_PORT); 104 105 input_report_key(inport_dev, BTN_MIDDLE, buttons & 1); 106 input_report_key(inport_dev, BTN_LEFT, buttons & 2); 107 input_report_key(inport_dev, BTN_RIGHT, buttons & 4); 108 109 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 110 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 111 112 input_sync(inport_dev); 113 return IRQ_HANDLED; 114 } 115 116 static int inport_open(struct input_dev *dev) 117 { 118 if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) 119 return -EBUSY; 120 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 121 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 122 123 return 0; 124 } 125 126 static void inport_close(struct input_dev *dev) 127 { 128 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 129 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 130 free_irq(inport_irq, NULL); 131 } 132 133 static int __init inport_init(void) 134 { 135 unsigned char a, b, c; 136 int err; 137 138 if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { 139 printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); 140 return -EBUSY; 141 } 142 143 a = inb(INPORT_SIGNATURE_PORT); 144 b = inb(INPORT_SIGNATURE_PORT); 145 c = inb(INPORT_SIGNATURE_PORT); 146 if (a == b || a != c) { 147 printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); 148 err = -ENODEV; 149 goto err_release_region; 150 } 151 152 inport_dev = input_allocate_device(); 153 if (!inport_dev) { 154 printk(KERN_ERR "inport.c: Not enough memory for input device\n"); 155 err = -ENOMEM; 156 goto err_release_region; 157 } 158 159 inport_dev->name = INPORT_NAME; 160 inport_dev->phys = "isa023c/input0"; 161 inport_dev->id.bustype = BUS_ISA; 162 inport_dev->id.vendor = INPORT_VENDOR; 163 inport_dev->id.product = 0x0001; 164 inport_dev->id.version = 0x0100; 165 166 inport_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 167 inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 168 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 169 inport_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 170 171 inport_dev->open = inport_open; 172 inport_dev->close = inport_close; 173 174 outb(INPORT_RESET, INPORT_CONTROL_PORT); 175 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 176 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 177 178 err = input_register_device(inport_dev); 179 if (err) 180 goto err_free_dev; 181 182 return 0; 183 184 err_free_dev: 185 input_free_device(inport_dev); 186 err_release_region: 187 release_region(INPORT_BASE, INPORT_EXTENT); 188 189 return err; 190 } 191 192 static void __exit inport_exit(void) 193 { 194 input_unregister_device(inport_dev); 195 release_region(INPORT_BASE, INPORT_EXTENT); 196 } 197 198 module_init(inport_init); 199 module_exit(inport_exit); 200