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_INPUT_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 __obsolete_setup("inport_irq="); 88 89 static struct input_dev *inport_dev; 90 91 static irqreturn_t inport_interrupt(int irq, void *dev_id) 92 { 93 unsigned char buttons; 94 95 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 96 outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 97 98 outb(INPORT_REG_X, INPORT_CONTROL_PORT); 99 input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT)); 100 101 outb(INPORT_REG_Y, INPORT_CONTROL_PORT); 102 input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT)); 103 104 outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); 105 buttons = inb(INPORT_DATA_PORT); 106 107 input_report_key(inport_dev, BTN_MIDDLE, buttons & 1); 108 input_report_key(inport_dev, BTN_LEFT, buttons & 2); 109 input_report_key(inport_dev, BTN_RIGHT, buttons & 4); 110 111 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 112 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 113 114 input_sync(inport_dev); 115 return IRQ_HANDLED; 116 } 117 118 static int inport_open(struct input_dev *dev) 119 { 120 if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) 121 return -EBUSY; 122 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 123 outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); 124 125 return 0; 126 } 127 128 static void inport_close(struct input_dev *dev) 129 { 130 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 131 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 132 free_irq(inport_irq, NULL); 133 } 134 135 static int __init inport_init(void) 136 { 137 unsigned char a, b, c; 138 139 if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { 140 printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); 141 return -EBUSY; 142 } 143 144 a = inb(INPORT_SIGNATURE_PORT); 145 b = inb(INPORT_SIGNATURE_PORT); 146 c = inb(INPORT_SIGNATURE_PORT); 147 if (a == b || a != c) { 148 release_region(INPORT_BASE, INPORT_EXTENT); 149 printk(KERN_ERR "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); 150 return -ENODEV; 151 } 152 153 if (!(inport_dev = input_allocate_device())) { 154 printk(KERN_ERR "inport.c: Not enough memory for input device\n"); 155 release_region(INPORT_BASE, INPORT_EXTENT); 156 return -ENOMEM; 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(EV_KEY) | BIT(EV_REL); 167 inport_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); 168 inport_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); 169 170 inport_dev->open = inport_open; 171 inport_dev->close = inport_close; 172 173 outb(INPORT_RESET, INPORT_CONTROL_PORT); 174 outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); 175 outb(INPORT_MODE_BASE, INPORT_DATA_PORT); 176 177 input_register_device(inport_dev); 178 179 return 0; 180 } 181 182 static void __exit inport_exit(void) 183 { 184 input_unregister_device(inport_dev); 185 release_region(INPORT_BASE, INPORT_EXTENT); 186 } 187 188 module_init(inport_init); 189 module_exit(inport_exit); 190