| /* |
| * 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 <linux/platform_device.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 irqreturn_t amimouse_interrupt(int irq, void *data) |
| { |
| struct input_dev *dev = data; |
| 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(dev, REL_X, dx); |
| input_report_rel(dev, REL_Y, dy); |
| |
| input_report_key(dev, BTN_LEFT, ciaa.pra & 0x40); |
| input_report_key(dev, BTN_MIDDLE, potgor & 0x0100); |
| input_report_key(dev, BTN_RIGHT, potgor & 0x0400); |
| |
| input_sync(dev); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int amimouse_open(struct input_dev *dev) |
| { |
| unsigned short joy0dat; |
| int error; |
| |
| joy0dat = amiga_custom.joy0dat; |
| |
| amimouse_lastx = joy0dat & 0xff; |
| amimouse_lasty = joy0dat >> 8; |
| |
| error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", |
| dev); |
| if (error) |
| dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB); |
| |
| return error; |
| } |
| |
| static void amimouse_close(struct input_dev *dev) |
| { |
| free_irq(IRQ_AMIGA_VERTB, dev); |
| } |
| |
| static int __init amimouse_probe(struct platform_device *pdev) |
| { |
| int err; |
| struct input_dev *dev; |
| |
| dev = input_allocate_device(); |
| if (!dev) |
| return -ENOMEM; |
| |
| dev->name = pdev->name; |
| dev->phys = "amimouse/input0"; |
| dev->id.bustype = BUS_AMIGA; |
| dev->id.vendor = 0x0001; |
| dev->id.product = 0x0002; |
| dev->id.version = 0x0100; |
| |
| dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
| dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
| dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | |
| BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); |
| dev->open = amimouse_open; |
| dev->close = amimouse_close; |
| dev->dev.parent = &pdev->dev; |
| |
| err = input_register_device(dev); |
| if (err) { |
| input_free_device(dev); |
| return err; |
| } |
| |
| platform_set_drvdata(pdev, dev); |
| |
| return 0; |
| } |
| |
| static int __exit amimouse_remove(struct platform_device *pdev) |
| { |
| struct input_dev *dev = platform_get_drvdata(pdev); |
| |
| platform_set_drvdata(pdev, NULL); |
| input_unregister_device(dev); |
| return 0; |
| } |
| |
| static struct platform_driver amimouse_driver = { |
| .probe = amimouse_probe, |
| .remove = __exit_p(amimouse_remove), |
| .driver = { |
| .name = "amiga-mouse", |
| .owner = THIS_MODULE, |
| }, |
| }; |
| module_platform_driver(amimouse_driver); |
| |
| MODULE_ALIAS("platform:amiga-mouse"); |