| /* |
| * Amiga mouse driver for Linux/m68k |
| * |
| * Copyright (c) 2000-2002 Vojtech Pavlik |
| * |
| * Based on the work of: |
| * Michael Rausch James Banks |
| * Matther Dillon David Giller |
| * Nathan Laredo Linus Torvalds |
| * Johan Myreen Jes Sorensen |
| * Russell King |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/input.h> |
| #include <linux/interrupt.h> |
| |
| #include <asm/irq.h> |
| #include <asm/setup.h> |
| #include <asm/system.h> |
| #include <asm/uaccess.h> |
| #include <asm/amigahw.h> |
| #include <asm/amigaints.h> |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| MODULE_DESCRIPTION("Amiga mouse driver"); |
| MODULE_LICENSE("GPL"); |
| |
| static int amimouse_lastx, amimouse_lasty; |
| static struct input_dev *amimouse_dev; |
| |
| static irqreturn_t amimouse_interrupt(int irq, void *dummy) |
| { |
| unsigned short joy0dat, potgor; |
| int nx, ny, dx, dy; |
| |
| joy0dat = amiga_custom.joy0dat; |
| |
| nx = joy0dat & 0xff; |
| ny = joy0dat >> 8; |
| |
| dx = nx - amimouse_lastx; |
| dy = ny - amimouse_lasty; |
| |
| if (dx < -127) dx = (256 + nx) - amimouse_lastx; |
| if (dx > 127) dx = (nx - 256) - amimouse_lastx; |
| if (dy < -127) dy = (256 + ny) - amimouse_lasty; |
| if (dy > 127) dy = (ny - 256) - amimouse_lasty; |
| |
| amimouse_lastx = nx; |
| amimouse_lasty = ny; |
| |
| potgor = amiga_custom.potgor; |
| |
| input_report_rel(amimouse_dev, REL_X, dx); |
| input_report_rel(amimouse_dev, REL_Y, dy); |
| |
| input_report_key(amimouse_dev, BTN_LEFT, ciaa.pra & 0x40); |
| input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100); |
| input_report_key(amimouse_dev, BTN_RIGHT, potgor & 0x0400); |
| |
| input_sync(amimouse_dev); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int amimouse_open(struct input_dev *dev) |
| { |
| unsigned short joy0dat; |
| |
| joy0dat = amiga_custom.joy0dat; |
| |
| amimouse_lastx = joy0dat & 0xff; |
| amimouse_lasty = joy0dat >> 8; |
| |
| if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) { |
| printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); |
| return -EBUSY; |
| } |
| |
| return 0; |
| } |
| |
| static void amimouse_close(struct input_dev *dev) |
| { |
| free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt); |
| } |
| |
| static int __init amimouse_init(void) |
| { |
| int err; |
| |
| if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE)) |
| return -ENODEV; |
| |
| amimouse_dev = input_allocate_device(); |
| if (!amimouse_dev) |
| return -ENOMEM; |
| |
| amimouse_dev->name = "Amiga mouse"; |
| amimouse_dev->phys = "amimouse/input0"; |
| amimouse_dev->id.bustype = BUS_AMIGA; |
| amimouse_dev->id.vendor = 0x0001; |
| amimouse_dev->id.product = 0x0002; |
| amimouse_dev->id.version = 0x0100; |
| |
| amimouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
| amimouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
| amimouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | |
| BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); |
| amimouse_dev->open = amimouse_open; |
| amimouse_dev->close = amimouse_close; |
| |
| err = input_register_device(amimouse_dev); |
| if (err) { |
| input_free_device(amimouse_dev); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static void __exit amimouse_exit(void) |
| { |
| input_unregister_device(amimouse_dev); |
| } |
| |
| module_init(amimouse_init); |
| module_exit(amimouse_exit); |