/* * $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $ * * Copyright (c) 1998-2001 Vojtech Pavlik */ /* * Driver for Amiga joysticks for Linux/m68k */ /* * 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 * * Should you need to contact me, the author, you can do so either by * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic */ #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/system.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; 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++) { amijoy_dev[i]->absmin[ABS_X + j] = -1; amijoy_dev[i]->absmax[ABS_X + j] = 1; } 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);