linux/drivers/input/mouse/amimouse.c
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
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>
2019-06-19 17:09:55 +02:00

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");