d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
|
|
#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 <linux/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");
|