linux-stable/drivers/input/joystick/amijoy.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 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 as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

160 lines
3.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 1998-2001 Vojtech Pavlik
*/
/*
* Driver for Amiga joysticks for Linux/m68k
*/
/*
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Driver for Amiga joysticks");
MODULE_LICENSE("GPL");
static int amijoy[2] = { 0, 1 };
module_param_array_named(map, amijoy, uint, NULL, 0);
MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
static int amijoy_used;
static DEFINE_MUTEX(amijoy_mutex);
static struct input_dev *amijoy_dev[2];
static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
static irqreturn_t amijoy_interrupt(int irq, void *dummy)
{
int i, data = 0, button = 0;
for (i = 0; i < 2; i++)
if (amijoy[i]) {
switch (i) {
case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
}
input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
data = ~(data ^ (data << 1));
input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
input_sync(amijoy_dev[i]);
}
return IRQ_HANDLED;
}
static int amijoy_open(struct input_dev *dev)
{
int err;
err = mutex_lock_interruptible(&amijoy_mutex);
if (err)
return err;
if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
err = -EBUSY;
goto out;
}
amijoy_used++;
out:
mutex_unlock(&amijoy_mutex);
return err;
}
static void amijoy_close(struct input_dev *dev)
{
mutex_lock(&amijoy_mutex);
if (!--amijoy_used)
free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
mutex_unlock(&amijoy_mutex);
}
static int __init amijoy_init(void)
{
int i, j;
int err;
if (!MACH_IS_AMIGA)
return -ENODEV;
for (i = 0; i < 2; i++) {
if (!amijoy[i])
continue;
amijoy_dev[i] = input_allocate_device();
if (!amijoy_dev[i]) {
err = -ENOMEM;
goto fail;
}
if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
input_free_device(amijoy_dev[i]);
err = -EBUSY;
goto fail;
}
amijoy_dev[i]->name = "Amiga joystick";
amijoy_dev[i]->phys = amijoy_phys[i];
amijoy_dev[i]->id.bustype = BUS_AMIGA;
amijoy_dev[i]->id.vendor = 0x0001;
amijoy_dev[i]->id.product = 0x0003;
amijoy_dev[i]->id.version = 0x0100;
amijoy_dev[i]->open = amijoy_open;
amijoy_dev[i]->close = amijoy_close;
amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
for (j = 0; j < 2; j++) {
input_set_abs_params(amijoy_dev[i], ABS_X + j,
-1, 1, 0, 0);
}
err = input_register_device(amijoy_dev[i]);
if (err) {
input_free_device(amijoy_dev[i]);
goto fail;
}
}
return 0;
fail: while (--i >= 0)
if (amijoy[i]) {
input_unregister_device(amijoy_dev[i]);
release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
}
return err;
}
static void __exit amijoy_exit(void)
{
int i;
for (i = 0; i < 2; i++)
if (amijoy[i]) {
input_unregister_device(amijoy_dev[i]);
release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
}
}
module_init(amijoy_init);
module_exit(amijoy_exit);