165 lines
4.4 KiB
C
165 lines
4.4 KiB
C
/*
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* $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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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/moduleparam.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 <asm/system.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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__obsolete_setup("amijoy=");
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static int amijoy_used;
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static DECLARE_MUTEX(amijoy_sem);
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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 char *amijoy_name = "Amiga joystick";
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static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
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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 = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
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case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
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}
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input_regs(amijoy_dev + i, fp);
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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 = down_interruptible(&amijoy_sem);
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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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up(&amijoy_sem);
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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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down(&amijoy_sem);
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if (!--amijoy_used)
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free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
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up(&amijoy_sem);
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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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for (i = 0; i < 2; i++)
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if (amijoy[i]) {
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if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
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"amijoy [Denise]")) {
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if (i == 1 && amijoy[0]) {
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input_unregister_device(amijoy_dev);
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release_mem_region(CUSTOM_PHYSADDR+10, 2);
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}
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return -EBUSY;
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}
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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(EV_KEY) | BIT(EV_ABS);
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amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
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amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
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for (j = 0; j < 2; j++) {
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amijoy_dev[i].absmin[ABS_X + j] = -1;
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amijoy_dev[i].absmax[ABS_X + j] = 1;
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}
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amijoy_dev[i].name = amijoy_name;
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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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input_register_device(amijoy_dev + i);
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printk(KERN_INFO "input: %s at joy%ddat\n", amijoy_name, i);
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}
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return 0;
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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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