11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * Copyright (c) 1999-2001 Vojtech Pavlik 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Based on the work of: 61da177e4SLinus Torvalds * James Banks Matthew Dillon 71da177e4SLinus Torvalds * David Giller Nathan Laredo 81da177e4SLinus Torvalds * Linus Torvalds Johan Myreen 91da177e4SLinus Torvalds * Cliff Matthews Philip Blundell 101da177e4SLinus Torvalds * Russell King 111da177e4SLinus Torvalds */ 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds /* 141da177e4SLinus Torvalds * Logitech Bus Mouse Driver for Linux 151da177e4SLinus Torvalds */ 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds /* 181da177e4SLinus Torvalds */ 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #include <linux/module.h> 211da177e4SLinus Torvalds #include <linux/delay.h> 221da177e4SLinus Torvalds #include <linux/ioport.h> 231da177e4SLinus Torvalds #include <linux/init.h> 241da177e4SLinus Torvalds #include <linux/input.h> 251da177e4SLinus Torvalds #include <linux/interrupt.h> 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds #include <asm/io.h> 281da177e4SLinus Torvalds #include <asm/irq.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 311da177e4SLinus Torvalds MODULE_DESCRIPTION("Logitech busmouse driver"); 321da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds #define LOGIBM_BASE 0x23c 351da177e4SLinus Torvalds #define LOGIBM_EXTENT 4 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds #define LOGIBM_DATA_PORT LOGIBM_BASE + 0 381da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1 391da177e4SLinus Torvalds #define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2 401da177e4SLinus Torvalds #define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds #define LOGIBM_ENABLE_IRQ 0x00 431da177e4SLinus Torvalds #define LOGIBM_DISABLE_IRQ 0x10 441da177e4SLinus Torvalds #define LOGIBM_READ_X_LOW 0x80 451da177e4SLinus Torvalds #define LOGIBM_READ_X_HIGH 0xa0 461da177e4SLinus Torvalds #define LOGIBM_READ_Y_LOW 0xc0 471da177e4SLinus Torvalds #define LOGIBM_READ_Y_HIGH 0xe0 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds #define LOGIBM_DEFAULT_MODE 0x90 501da177e4SLinus Torvalds #define LOGIBM_CONFIG_BYTE 0x91 511da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_BYTE 0xa5 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds #define LOGIBM_IRQ 5 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds static int logibm_irq = LOGIBM_IRQ; 56f6b12d04SDavid Howells module_param_hw_named(irq, logibm_irq, uint, irq, 0); 571da177e4SLinus Torvalds MODULE_PARM_DESC(irq, "IRQ number (5=default)"); 581da177e4SLinus Torvalds 592e5b636bSDmitry Torokhov static struct input_dev *logibm_dev; 601da177e4SLinus Torvalds 617d12e780SDavid Howells static irqreturn_t logibm_interrupt(int irq, void *dev_id) 621da177e4SLinus Torvalds { 631da177e4SLinus Torvalds char dx, dy; 641da177e4SLinus Torvalds unsigned char buttons; 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT); 671da177e4SLinus Torvalds dx = (inb(LOGIBM_DATA_PORT) & 0xf); 681da177e4SLinus Torvalds outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT); 691da177e4SLinus Torvalds dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4; 701da177e4SLinus Torvalds outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT); 711da177e4SLinus Torvalds dy = (inb(LOGIBM_DATA_PORT) & 0xf); 721da177e4SLinus Torvalds outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT); 731da177e4SLinus Torvalds buttons = inb(LOGIBM_DATA_PORT); 741da177e4SLinus Torvalds dy |= (buttons & 0xf) << 4; 751da177e4SLinus Torvalds buttons = ~buttons >> 5; 761da177e4SLinus Torvalds 772e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_X, dx); 782e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_Y, dy); 792e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_RIGHT, buttons & 1); 802e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_MIDDLE, buttons & 2); 812e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_LEFT, buttons & 4); 822e5b636bSDmitry Torokhov input_sync(logibm_dev); 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); 851da177e4SLinus Torvalds return IRQ_HANDLED; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 882e5b636bSDmitry Torokhov static int logibm_open(struct input_dev *dev) 892e5b636bSDmitry Torokhov { 902e5b636bSDmitry Torokhov if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) { 912e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq); 922e5b636bSDmitry Torokhov return -EBUSY; 932e5b636bSDmitry Torokhov } 942e5b636bSDmitry Torokhov outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); 952e5b636bSDmitry Torokhov return 0; 962e5b636bSDmitry Torokhov } 972e5b636bSDmitry Torokhov 982e5b636bSDmitry Torokhov static void logibm_close(struct input_dev *dev) 992e5b636bSDmitry Torokhov { 1002e5b636bSDmitry Torokhov outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); 1012e5b636bSDmitry Torokhov free_irq(logibm_irq, NULL); 1022e5b636bSDmitry Torokhov } 1032e5b636bSDmitry Torokhov 1041da177e4SLinus Torvalds static int __init logibm_init(void) 1051da177e4SLinus Torvalds { 10672155615SDmitry Torokhov int err; 10772155615SDmitry Torokhov 1081da177e4SLinus Torvalds if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) { 1091da177e4SLinus Torvalds printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE); 1101da177e4SLinus Torvalds return -EBUSY; 1111da177e4SLinus Torvalds } 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT); 1141da177e4SLinus Torvalds outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT); 1151da177e4SLinus Torvalds udelay(100); 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) { 1182a0f9c4cSHelge Deller printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE); 11972155615SDmitry Torokhov err = -ENODEV; 12072155615SDmitry Torokhov goto err_release_region; 1211da177e4SLinus Torvalds } 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT); 1241da177e4SLinus Torvalds outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); 1251da177e4SLinus Torvalds 12672155615SDmitry Torokhov logibm_dev = input_allocate_device(); 12772155615SDmitry Torokhov if (!logibm_dev) { 1282e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Not enough memory for input device\n"); 12972155615SDmitry Torokhov err = -ENOMEM; 13072155615SDmitry Torokhov goto err_release_region; 1312e5b636bSDmitry Torokhov } 1321da177e4SLinus Torvalds 1332e5b636bSDmitry Torokhov logibm_dev->name = "Logitech bus mouse"; 1342e5b636bSDmitry Torokhov logibm_dev->phys = "isa023c/input0"; 1352e5b636bSDmitry Torokhov logibm_dev->id.bustype = BUS_ISA; 1362e5b636bSDmitry Torokhov logibm_dev->id.vendor = 0x0003; 1372e5b636bSDmitry Torokhov logibm_dev->id.product = 0x0001; 1382e5b636bSDmitry Torokhov logibm_dev->id.version = 0x0100; 1392e5b636bSDmitry Torokhov 1407b19ada2SJiri Slaby logibm_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 1417b19ada2SJiri Slaby logibm_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 1427b19ada2SJiri Slaby BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 1437b19ada2SJiri Slaby logibm_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 1442e5b636bSDmitry Torokhov 1452e5b636bSDmitry Torokhov logibm_dev->open = logibm_open; 1462e5b636bSDmitry Torokhov logibm_dev->close = logibm_close; 1472e5b636bSDmitry Torokhov 14872155615SDmitry Torokhov err = input_register_device(logibm_dev); 14972155615SDmitry Torokhov if (err) 15072155615SDmitry Torokhov goto err_free_dev; 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds return 0; 15372155615SDmitry Torokhov 15472155615SDmitry Torokhov err_free_dev: 15572155615SDmitry Torokhov input_free_device(logibm_dev); 15672155615SDmitry Torokhov err_release_region: 15772155615SDmitry Torokhov release_region(LOGIBM_BASE, LOGIBM_EXTENT); 15872155615SDmitry Torokhov 15972155615SDmitry Torokhov return err; 1601da177e4SLinus Torvalds } 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds static void __exit logibm_exit(void) 1631da177e4SLinus Torvalds { 1642e5b636bSDmitry Torokhov input_unregister_device(logibm_dev); 1651da177e4SLinus Torvalds release_region(LOGIBM_BASE, LOGIBM_EXTENT); 1661da177e4SLinus Torvalds } 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds module_init(logibm_init); 1691da177e4SLinus Torvalds module_exit(logibm_exit); 170