// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright ( c ) 1999 - 2001 Vojtech Pavlik
*
* Based on the work of :
* Teemu Rantanen Derrick Cole
* Peter Cervasio Christoph Niemann
* Philip Blundell Russell King
* Bob Harris
*/
/*
* Inport ( ATI XL and Microsoft ) busmouse driver for Linux
*/
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <asm /io.h>
#include <asm /irq.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>" );
MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver" );
MODULE_LICENSE("GPL" );
#define INPORT_BASE 0 x23c
#define INPORT_EXTENT 4
#define INPORT_CONTROL_PORT INPORT_BASE + 0
#define INPORT_DATA_PORT INPORT_BASE + 1
#define INPORT_SIGNATURE_PORT INPORT_BASE + 2
#define INPORT_REG_BTNS 0 x00
#define INPORT_REG_X 0 x01
#define INPORT_REG_Y 0 x02
#define INPORT_REG_MODE 0 x07
#define INPORT_RESET 0 x80
#ifdef CONFIG_MOUSE_ATIXL
#define INPORT_NAME "ATI XL Mouse"
#define INPORT_VENDOR 0 x0002
#define INPORT_SPEED_30HZ 0 x01
#define INPORT_SPEED_50HZ 0 x02
#define INPORT_SPEED_100HZ 0 x03
#define INPORT_SPEED_200HZ 0 x04
#define INPORT_MODE_BASE INPORT_SPEED_100HZ
#define INPORT_MODE_IRQ 0 x08
#else
#define INPORT_NAME "Microsoft InPort Mouse"
#define INPORT_VENDOR 0 x0001
#define INPORT_MODE_BASE 0 x10
#define INPORT_MODE_IRQ 0 x01
#endif
#define INPORT_MODE_HOLD 0 x20
#define INPORT_IRQ 5
static int inport_irq = INPORT_IRQ;
module_param_hw_named(irq, inport_irq, uint, irq, 0 );
MODULE_PARM_DESC(irq, "IRQ number (5=default)" );
static struct input_dev *inport_dev;
static irqreturn_t inport_interrupt(int irq, void *dev_id)
{
unsigned char buttons;
outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
outb(INPORT_REG_X, INPORT_CONTROL_PORT);
input_report_rel(inport_dev, REL_X, inb(INPORT_DATA_PORT));
outb(INPORT_REG_Y, INPORT_CONTROL_PORT);
input_report_rel(inport_dev, REL_Y, inb(INPORT_DATA_PORT));
outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT);
buttons = inb(INPORT_DATA_PORT);
input_report_key(inport_dev, BTN_MIDDLE, buttons & 1 );
input_report_key(inport_dev, BTN_LEFT, buttons & 2 );
input_report_key(inport_dev, BTN_RIGHT, buttons & 4 );
outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
input_sync(inport_dev);
return IRQ_HANDLED;
}
static int inport_open(struct input_dev *dev)
{
if (request_irq(inport_irq, inport_interrupt, 0 , "inport" , NULL))
return -EBUSY;
outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT);
return 0 ;
}
static void inport_close(struct input_dev *dev)
{
outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
free_irq(inport_irq, NULL);
}
static int __init inport_init(void )
{
unsigned char a, b, c;
int err;
if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport" )) {
printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n" , INPORT_BASE);
return -EBUSY;
}
a = inb(INPORT_SIGNATURE_PORT);
b = inb(INPORT_SIGNATURE_PORT);
c = inb(INPORT_SIGNATURE_PORT);
if (a == b || a != c) {
printk(KERN_INFO "inport.c: Didn't find InPort mouse at %#x\n" , INPORT_BASE);
err = -ENODEV;
goto err_release_region;
}
inport_dev = input_allocate_device();
if (!inport_dev) {
printk(KERN_ERR "inport.c: Not enough memory for input device\n" );
err = -ENOMEM;
goto err_release_region;
}
inport_dev->name = INPORT_NAME;
inport_dev->phys = "isa023c/input0" ;
inport_dev->id.bustype = BUS_ISA;
inport_dev->id.vendor = INPORT_VENDOR;
inport_dev->id.product = 0 x0001;
inport_dev->id.version = 0 x0100;
inport_dev->evbit[0 ] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
inport_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
inport_dev->relbit[0 ] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
inport_dev->open = inport_open;
inport_dev->close = inport_close;
outb(INPORT_RESET, INPORT_CONTROL_PORT);
outb(INPORT_REG_MODE, INPORT_CONTROL_PORT);
outb(INPORT_MODE_BASE, INPORT_DATA_PORT);
err = input_register_device(inport_dev);
if (err)
goto err_free_dev;
return 0 ;
err_free_dev:
input_free_device(inport_dev);
err_release_region:
release_region(INPORT_BASE, INPORT_EXTENT);
return err;
}
static void __exit inport_exit(void )
{
input_unregister_device(inport_dev);
release_region(INPORT_BASE, INPORT_EXTENT);
}
module_init(inport_init);
module_exit(inport_exit);
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(vorverarbeitet am 2026-09-27)
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