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 #include <linux/module.h>
181da177e4SLinus Torvalds #include <linux/delay.h>
191da177e4SLinus Torvalds #include <linux/ioport.h>
201da177e4SLinus Torvalds #include <linux/init.h>
211da177e4SLinus Torvalds #include <linux/input.h>
221da177e4SLinus Torvalds #include <linux/interrupt.h>
231da177e4SLinus Torvalds
241da177e4SLinus Torvalds #include <asm/io.h>
251da177e4SLinus Torvalds #include <asm/irq.h>
261da177e4SLinus Torvalds
271da177e4SLinus Torvalds MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
281da177e4SLinus Torvalds MODULE_DESCRIPTION("Logitech busmouse driver");
291da177e4SLinus Torvalds MODULE_LICENSE("GPL");
301da177e4SLinus Torvalds
311da177e4SLinus Torvalds #define LOGIBM_BASE 0x23c
321da177e4SLinus Torvalds #define LOGIBM_EXTENT 4
331da177e4SLinus Torvalds
341da177e4SLinus Torvalds #define LOGIBM_DATA_PORT LOGIBM_BASE + 0
351da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1
361da177e4SLinus Torvalds #define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2
371da177e4SLinus Torvalds #define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3
381da177e4SLinus Torvalds
391da177e4SLinus Torvalds #define LOGIBM_ENABLE_IRQ 0x00
401da177e4SLinus Torvalds #define LOGIBM_DISABLE_IRQ 0x10
411da177e4SLinus Torvalds #define LOGIBM_READ_X_LOW 0x80
421da177e4SLinus Torvalds #define LOGIBM_READ_X_HIGH 0xa0
431da177e4SLinus Torvalds #define LOGIBM_READ_Y_LOW 0xc0
441da177e4SLinus Torvalds #define LOGIBM_READ_Y_HIGH 0xe0
451da177e4SLinus Torvalds
461da177e4SLinus Torvalds #define LOGIBM_DEFAULT_MODE 0x90
471da177e4SLinus Torvalds #define LOGIBM_CONFIG_BYTE 0x91
481da177e4SLinus Torvalds #define LOGIBM_SIGNATURE_BYTE 0xa5
491da177e4SLinus Torvalds
501da177e4SLinus Torvalds #define LOGIBM_IRQ 5
511da177e4SLinus Torvalds
521da177e4SLinus Torvalds static int logibm_irq = LOGIBM_IRQ;
53f6b12d04SDavid Howells module_param_hw_named(irq, logibm_irq, uint, irq, 0);
541da177e4SLinus Torvalds MODULE_PARM_DESC(irq, "IRQ number (5=default)");
551da177e4SLinus Torvalds
562e5b636bSDmitry Torokhov static struct input_dev *logibm_dev;
571da177e4SLinus Torvalds
logibm_interrupt(int irq,void * dev_id)587d12e780SDavid Howells static irqreturn_t logibm_interrupt(int irq, void *dev_id)
591da177e4SLinus Torvalds {
601da177e4SLinus Torvalds char dx, dy;
611da177e4SLinus Torvalds unsigned char buttons;
621da177e4SLinus Torvalds
631da177e4SLinus Torvalds outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT);
641da177e4SLinus Torvalds dx = (inb(LOGIBM_DATA_PORT) & 0xf);
651da177e4SLinus Torvalds outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT);
661da177e4SLinus Torvalds dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4;
671da177e4SLinus Torvalds outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT);
681da177e4SLinus Torvalds dy = (inb(LOGIBM_DATA_PORT) & 0xf);
691da177e4SLinus Torvalds outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT);
701da177e4SLinus Torvalds buttons = inb(LOGIBM_DATA_PORT);
711da177e4SLinus Torvalds dy |= (buttons & 0xf) << 4;
721da177e4SLinus Torvalds buttons = ~buttons >> 5;
731da177e4SLinus Torvalds
742e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_X, dx);
752e5b636bSDmitry Torokhov input_report_rel(logibm_dev, REL_Y, dy);
762e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_RIGHT, buttons & 1);
772e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_MIDDLE, buttons & 2);
782e5b636bSDmitry Torokhov input_report_key(logibm_dev, BTN_LEFT, buttons & 4);
792e5b636bSDmitry Torokhov input_sync(logibm_dev);
801da177e4SLinus Torvalds
811da177e4SLinus Torvalds outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
821da177e4SLinus Torvalds return IRQ_HANDLED;
831da177e4SLinus Torvalds }
841da177e4SLinus Torvalds
logibm_open(struct input_dev * dev)852e5b636bSDmitry Torokhov static int logibm_open(struct input_dev *dev)
862e5b636bSDmitry Torokhov {
872e5b636bSDmitry Torokhov if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) {
882e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq);
892e5b636bSDmitry Torokhov return -EBUSY;
902e5b636bSDmitry Torokhov }
912e5b636bSDmitry Torokhov outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT);
922e5b636bSDmitry Torokhov return 0;
932e5b636bSDmitry Torokhov }
942e5b636bSDmitry Torokhov
logibm_close(struct input_dev * dev)952e5b636bSDmitry Torokhov static void logibm_close(struct input_dev *dev)
962e5b636bSDmitry Torokhov {
972e5b636bSDmitry Torokhov outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
982e5b636bSDmitry Torokhov free_irq(logibm_irq, NULL);
992e5b636bSDmitry Torokhov }
1002e5b636bSDmitry Torokhov
logibm_init(void)1011da177e4SLinus Torvalds static int __init logibm_init(void)
1021da177e4SLinus Torvalds {
10372155615SDmitry Torokhov int err;
10472155615SDmitry Torokhov
1051da177e4SLinus Torvalds if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) {
1061da177e4SLinus Torvalds printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE);
1071da177e4SLinus Torvalds return -EBUSY;
1081da177e4SLinus Torvalds }
1091da177e4SLinus Torvalds
1101da177e4SLinus Torvalds outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT);
1111da177e4SLinus Torvalds outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT);
1121da177e4SLinus Torvalds udelay(100);
1131da177e4SLinus Torvalds
1141da177e4SLinus Torvalds if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) {
1152a0f9c4cSHelge Deller printk(KERN_INFO "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE);
11672155615SDmitry Torokhov err = -ENODEV;
11772155615SDmitry Torokhov goto err_release_region;
1181da177e4SLinus Torvalds }
1191da177e4SLinus Torvalds
1201da177e4SLinus Torvalds outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT);
1211da177e4SLinus Torvalds outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT);
1221da177e4SLinus Torvalds
12372155615SDmitry Torokhov logibm_dev = input_allocate_device();
12472155615SDmitry Torokhov if (!logibm_dev) {
1252e5b636bSDmitry Torokhov printk(KERN_ERR "logibm.c: Not enough memory for input device\n");
12672155615SDmitry Torokhov err = -ENOMEM;
12772155615SDmitry Torokhov goto err_release_region;
1282e5b636bSDmitry Torokhov }
1291da177e4SLinus Torvalds
1302e5b636bSDmitry Torokhov logibm_dev->name = "Logitech bus mouse";
1312e5b636bSDmitry Torokhov logibm_dev->phys = "isa023c/input0";
1322e5b636bSDmitry Torokhov logibm_dev->id.bustype = BUS_ISA;
1332e5b636bSDmitry Torokhov logibm_dev->id.vendor = 0x0003;
1342e5b636bSDmitry Torokhov logibm_dev->id.product = 0x0001;
1352e5b636bSDmitry Torokhov logibm_dev->id.version = 0x0100;
1362e5b636bSDmitry Torokhov
1377b19ada2SJiri Slaby logibm_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1387b19ada2SJiri Slaby logibm_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
1397b19ada2SJiri Slaby BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
1407b19ada2SJiri Slaby logibm_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1412e5b636bSDmitry Torokhov
1422e5b636bSDmitry Torokhov logibm_dev->open = logibm_open;
1432e5b636bSDmitry Torokhov logibm_dev->close = logibm_close;
1442e5b636bSDmitry Torokhov
14572155615SDmitry Torokhov err = input_register_device(logibm_dev);
14672155615SDmitry Torokhov if (err)
14772155615SDmitry Torokhov goto err_free_dev;
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvalds return 0;
15072155615SDmitry Torokhov
15172155615SDmitry Torokhov err_free_dev:
15272155615SDmitry Torokhov input_free_device(logibm_dev);
15372155615SDmitry Torokhov err_release_region:
15472155615SDmitry Torokhov release_region(LOGIBM_BASE, LOGIBM_EXTENT);
15572155615SDmitry Torokhov
15672155615SDmitry Torokhov return err;
1571da177e4SLinus Torvalds }
1581da177e4SLinus Torvalds
logibm_exit(void)1591da177e4SLinus Torvalds static void __exit logibm_exit(void)
1601da177e4SLinus Torvalds {
1612e5b636bSDmitry Torokhov input_unregister_device(logibm_dev);
1621da177e4SLinus Torvalds release_region(LOGIBM_BASE, LOGIBM_EXTENT);
1631da177e4SLinus Torvalds }
1641da177e4SLinus Torvalds
1651da177e4SLinus Torvalds module_init(logibm_init);
1661da177e4SLinus Torvalds module_exit(logibm_exit);
167