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