11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 1999-2001 Vojtech Pavlik 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Based on the work of: 51da177e4SLinus Torvalds * James Banks Matthew Dillon 61da177e4SLinus Torvalds * David Giller Nathan Laredo 71da177e4SLinus Torvalds * Linus Torvalds Johan Myreen 81da177e4SLinus Torvalds * Cliff Matthews Philip Blundell 91da177e4SLinus Torvalds * Russell King 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds /* 131da177e4SLinus Torvalds * Logitech Bus Mouse Driver for Linux 141da177e4SLinus Torvalds */ 151da177e4SLinus Torvalds 161da177e4SLinus Torvalds /* 171da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 181da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 191da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 201da177e4SLinus Torvalds * (at your option) any later version. 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 231da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 241da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 251da177e4SLinus Torvalds * GNU General Public License for more details. 261da177e4SLinus Torvalds * 271da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 281da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 291da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 301da177e4SLinus Torvalds * 311da177e4SLinus Torvalds * Should you need to contact me, the author, you can do so either by 321da177e4SLinus Torvalds * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 331da177e4SLinus Torvalds * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 341da177e4SLinus Torvalds */ 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #include <linux/module.h> 371da177e4SLinus Torvalds #include <linux/delay.h> 381da177e4SLinus Torvalds #include <linux/ioport.h> 391da177e4SLinus Torvalds #include <linux/init.h> 401da177e4SLinus Torvalds #include <linux/input.h> 411da177e4SLinus Torvalds #include <linux/interrupt.h> 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds #include <asm/io.h> 441da177e4SLinus Torvalds #include <asm/irq.h> 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 471da177e4SLinus Torvalds MODULE_DESCRIPTION("Logitech busmouse driver"); 481da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds #define LOGIBM_BASE 0x23c 511da177e4SLinus Torvalds #define LOGIBM_EXTENT 4 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds #define LOGIBM_DATA_PORT LOGIBM_BASE + 0 541da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1 551da177e4SLinus Torvalds #define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2 561da177e4SLinus Torvalds #define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds #define LOGIBM_ENABLE_IRQ 0x00 591da177e4SLinus Torvalds #define LOGIBM_DISABLE_IRQ 0x10 601da177e4SLinus Torvalds #define LOGIBM_READ_X_LOW 0x80 611da177e4SLinus Torvalds #define LOGIBM_READ_X_HIGH 0xa0 621da177e4SLinus Torvalds #define LOGIBM_READ_Y_LOW 0xc0 631da177e4SLinus Torvalds #define LOGIBM_READ_Y_HIGH 0xe0 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds #define LOGIBM_DEFAULT_MODE 0x90 661da177e4SLinus Torvalds #define LOGIBM_CONFIG_BYTE 0x91 671da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_BYTE 0xa5 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds #define LOGIBM_IRQ 5 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds static int logibm_irq = LOGIBM_IRQ; 72f6b12d04SDavid Howells module_param_hw_named(irq, logibm_irq, uint, irq, 0); 731da177e4SLinus Torvalds MODULE_PARM_DESC(irq, "IRQ number (5=default)"); 741da177e4SLinus Torvalds 752e5b636bSDmitry Torokhov static struct input_dev *logibm_dev; 761da177e4SLinus Torvalds 777d12e780SDavid Howells static irqreturn_t logibm_interrupt(int irq, void *dev_id) 781da177e4SLinus Torvalds { 791da177e4SLinus Torvalds char dx, dy; 801da177e4SLinus Torvalds unsigned char buttons; 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT); 831da177e4SLinus Torvalds dx = (inb(LOGIBM_DATA_PORT) & 0xf); 841da177e4SLinus Torvalds outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT); 851da177e4SLinus Torvalds dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4; 861da177e4SLinus Torvalds outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT); 871da177e4SLinus Torvalds dy = (inb(LOGIBM_DATA_PORT) & 0xf); 881da177e4SLinus Torvalds outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT); 891da177e4SLinus Torvalds buttons = inb(LOGIBM_DATA_PORT); 901da177e4SLinus Torvalds dy |= (buttons & 0xf) << 4; 911da177e4SLinus Torvalds buttons = ~buttons >> 5; 921da177e4SLinus Torvalds 932e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_X, dx); 942e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_Y, dy); 952e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_RIGHT, buttons & 1); 962e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_MIDDLE, buttons & 2); 972e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_LEFT, buttons & 4); 982e5b636bSDmitry Torokhov input_sync(logibm_dev); 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); 1011da177e4SLinus Torvalds return IRQ_HANDLED; 1021da177e4SLinus Torvalds } 1031da177e4SLinus Torvalds 1042e5b636bSDmitry Torokhov static int logibm_open(struct input_dev *dev) 1052e5b636bSDmitry Torokhov { 1062e5b636bSDmitry Torokhov if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) { 1072e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq); 1082e5b636bSDmitry Torokhov return -EBUSY; 1092e5b636bSDmitry Torokhov } 1102e5b636bSDmitry Torokhov outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); 1112e5b636bSDmitry Torokhov return 0; 1122e5b636bSDmitry Torokhov } 1132e5b636bSDmitry Torokhov 1142e5b636bSDmitry Torokhov static void logibm_close(struct input_dev *dev) 1152e5b636bSDmitry Torokhov { 1162e5b636bSDmitry Torokhov outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); 1172e5b636bSDmitry Torokhov free_irq(logibm_irq, NULL); 1182e5b636bSDmitry Torokhov } 1192e5b636bSDmitry Torokhov 1201da177e4SLinus Torvalds static int __init logibm_init(void) 1211da177e4SLinus Torvalds { 12272155615SDmitry Torokhov int err; 12372155615SDmitry Torokhov 1241da177e4SLinus Torvalds if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) { 1251da177e4SLinus Torvalds printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE); 1261da177e4SLinus Torvalds return -EBUSY; 1271da177e4SLinus Torvalds } 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT); 1301da177e4SLinus Torvalds outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT); 1311da177e4SLinus Torvalds udelay(100); 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) { 1342a0f9c4cSHelge Deller printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE); 13572155615SDmitry Torokhov err = -ENODEV; 13672155615SDmitry Torokhov goto err_release_region; 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT); 1401da177e4SLinus Torvalds outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); 1411da177e4SLinus Torvalds 14272155615SDmitry Torokhov logibm_dev = input_allocate_device(); 14372155615SDmitry Torokhov if (!logibm_dev) { 1442e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Not enough memory for input device\n"); 14572155615SDmitry Torokhov err = -ENOMEM; 14672155615SDmitry Torokhov goto err_release_region; 1472e5b636bSDmitry Torokhov } 1481da177e4SLinus Torvalds 1492e5b636bSDmitry Torokhov logibm_dev->name = "Logitech bus mouse"; 1502e5b636bSDmitry Torokhov logibm_dev->phys = "isa023c/input0"; 1512e5b636bSDmitry Torokhov logibm_dev->id.bustype = BUS_ISA; 1522e5b636bSDmitry Torokhov logibm_dev->id.vendor = 0x0003; 1532e5b636bSDmitry Torokhov logibm_dev->id.product = 0x0001; 1542e5b636bSDmitry Torokhov logibm_dev->id.version = 0x0100; 1552e5b636bSDmitry Torokhov 1567b19ada2SJiri Slaby logibm_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 1577b19ada2SJiri Slaby logibm_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 1587b19ada2SJiri Slaby BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 1597b19ada2SJiri Slaby logibm_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 1602e5b636bSDmitry Torokhov 1612e5b636bSDmitry Torokhov logibm_dev->open = logibm_open; 1622e5b636bSDmitry Torokhov logibm_dev->close = logibm_close; 1632e5b636bSDmitry Torokhov 16472155615SDmitry Torokhov err = input_register_device(logibm_dev); 16572155615SDmitry Torokhov if (err) 16672155615SDmitry Torokhov goto err_free_dev; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds return 0; 16972155615SDmitry Torokhov 17072155615SDmitry Torokhov err_free_dev: 17172155615SDmitry Torokhov input_free_device(logibm_dev); 17272155615SDmitry Torokhov err_release_region: 17372155615SDmitry Torokhov release_region(LOGIBM_BASE, LOGIBM_EXTENT); 17472155615SDmitry Torokhov 17572155615SDmitry Torokhov return err; 1761da177e4SLinus Torvalds } 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds static void __exit logibm_exit(void) 1791da177e4SLinus Torvalds { 1802e5b636bSDmitry Torokhov input_unregister_device(logibm_dev); 1811da177e4SLinus Torvalds release_region(LOGIBM_BASE, LOGIBM_EXTENT); 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds module_init(logibm_init); 1851da177e4SLinus Torvalds module_exit(logibm_exit); 186