zcomp_lz4.rar_introducedcxe_lz4_mouse

/* * 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/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); input_unregister_device(dev); return 0; } static struct platform_driver amimouse_driver = { .remove = __exit_p(amimouse_remove), .driver = { .name = "amiga-mouse", }, }; module_platform_driver_probe(amimouse_driver, amimouse_probe); MODULE_ALIAS("platform:amiga-mouse");