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