11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $ 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (c) 1998-2001 Vojtech Pavlik 51da177e4SLinus Torvalds */ 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds /* 81da177e4SLinus Torvalds * Driver for Amiga joysticks for Linux/m68k 91da177e4SLinus Torvalds */ 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds /* 121da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 131da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 141da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 151da177e4SLinus Torvalds * (at your option) any later version. 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 181da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 191da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 201da177e4SLinus Torvalds * GNU General Public License for more details. 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 231da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 241da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 251da177e4SLinus Torvalds * 261da177e4SLinus Torvalds * Should you need to contact me, the author, you can do so either by 271da177e4SLinus Torvalds * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 281da177e4SLinus Torvalds * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 291da177e4SLinus Torvalds */ 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <linux/types.h> 321da177e4SLinus Torvalds #include <linux/errno.h> 331da177e4SLinus Torvalds #include <linux/kernel.h> 341da177e4SLinus Torvalds #include <linux/module.h> 351da177e4SLinus Torvalds #include <linux/moduleparam.h> 361da177e4SLinus Torvalds #include <linux/init.h> 371da177e4SLinus Torvalds #include <linux/input.h> 381da177e4SLinus Torvalds #include <linux/interrupt.h> 3972ba9f0cSIngo Molnar #include <linux/mutex.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds #include <asm/system.h> 421da177e4SLinus Torvalds #include <asm/amigahw.h> 431da177e4SLinus Torvalds #include <asm/amigaints.h> 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 461da177e4SLinus Torvalds MODULE_DESCRIPTION("Driver for Amiga joysticks"); 471da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds static int amijoy[2] = { 0, 1 }; 501da177e4SLinus Torvalds module_param_array_named(map, amijoy, uint, NULL, 0); 511da177e4SLinus Torvalds MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)"); 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds __obsolete_setup("amijoy="); 541da177e4SLinus Torvalds 558b1a198bSDmitry Torokhov static int amijoy_used; 5672ba9f0cSIngo Molnar static DEFINE_MUTEX(amijoy_mutex); 5717dd3f0fSDmitry Torokhov static struct input_dev *amijoy_dev[2]; 581da177e4SLinus Torvalds static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; 591da177e4SLinus Torvalds 607d12e780SDavid Howells static irqreturn_t amijoy_interrupt(int irq, void *dummy) 611da177e4SLinus Torvalds { 621da177e4SLinus Torvalds int i, data = 0, button = 0; 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds for (i = 0; i < 2; i++) 651da177e4SLinus Torvalds if (amijoy[i]) { 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds switch (i) { 68b4290a23SAl Viro case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; 69b4290a23SAl Viro case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; 701da177e4SLinus Torvalds } 711da177e4SLinus Torvalds 7217dd3f0fSDmitry Torokhov input_report_key(amijoy_dev[i], BTN_TRIGGER, button); 731da177e4SLinus Torvalds 7417dd3f0fSDmitry Torokhov input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); 751da177e4SLinus Torvalds data = ~(data ^ (data << 1)); 7617dd3f0fSDmitry Torokhov input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); 771da177e4SLinus Torvalds 7817dd3f0fSDmitry Torokhov input_sync(amijoy_dev[i]); 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds return IRQ_HANDLED; 811da177e4SLinus Torvalds } 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds static int amijoy_open(struct input_dev *dev) 841da177e4SLinus Torvalds { 858b1a198bSDmitry Torokhov int err; 861da177e4SLinus Torvalds 8772ba9f0cSIngo Molnar err = mutex_lock_interruptible(&amijoy_mutex); 888b1a198bSDmitry Torokhov if (err) 898b1a198bSDmitry Torokhov return err; 901da177e4SLinus Torvalds 918b1a198bSDmitry Torokhov if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { 921da177e4SLinus Torvalds printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); 938b1a198bSDmitry Torokhov err = -EBUSY; 948b1a198bSDmitry Torokhov goto out; 951da177e4SLinus Torvalds } 961da177e4SLinus Torvalds 978b1a198bSDmitry Torokhov amijoy_used++; 988b1a198bSDmitry Torokhov out: 9972ba9f0cSIngo Molnar mutex_unlock(&amijoy_mutex); 1008b1a198bSDmitry Torokhov return err; 1011da177e4SLinus Torvalds } 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds static void amijoy_close(struct input_dev *dev) 1041da177e4SLinus Torvalds { 10572ba9f0cSIngo Molnar mutex_lock(&amijoy_mutex); 1068b1a198bSDmitry Torokhov if (!--amijoy_used) 1071da177e4SLinus Torvalds free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); 10872ba9f0cSIngo Molnar mutex_unlock(&amijoy_mutex); 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static int __init amijoy_init(void) 1121da177e4SLinus Torvalds { 1131da177e4SLinus Torvalds int i, j; 11417dd3f0fSDmitry Torokhov int err; 1151da177e4SLinus Torvalds 11617dd3f0fSDmitry Torokhov for (i = 0; i < 2; i++) { 11717dd3f0fSDmitry Torokhov if (!amijoy[i]) 11817dd3f0fSDmitry Torokhov continue; 11917dd3f0fSDmitry Torokhov 12017dd3f0fSDmitry Torokhov amijoy_dev[i] = input_allocate_device(); 12117dd3f0fSDmitry Torokhov if (!amijoy_dev[i]) { 12217dd3f0fSDmitry Torokhov err = -ENOMEM; 12317dd3f0fSDmitry Torokhov goto fail; 1241da177e4SLinus Torvalds } 1251da177e4SLinus Torvalds 12617dd3f0fSDmitry Torokhov if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) { 12717dd3f0fSDmitry Torokhov input_free_device(amijoy_dev[i]); 12817dd3f0fSDmitry Torokhov err = -EBUSY; 12917dd3f0fSDmitry Torokhov goto fail; 13017dd3f0fSDmitry Torokhov } 13117dd3f0fSDmitry Torokhov 13217dd3f0fSDmitry Torokhov amijoy_dev[i]->name = "Amiga joystick"; 13317dd3f0fSDmitry Torokhov amijoy_dev[i]->phys = amijoy_phys[i]; 13417dd3f0fSDmitry Torokhov amijoy_dev[i]->id.bustype = BUS_AMIGA; 13517dd3f0fSDmitry Torokhov amijoy_dev[i]->id.vendor = 0x0001; 13617dd3f0fSDmitry Torokhov amijoy_dev[i]->id.product = 0x0003; 13717dd3f0fSDmitry Torokhov amijoy_dev[i]->id.version = 0x0100; 13817dd3f0fSDmitry Torokhov 13917dd3f0fSDmitry Torokhov amijoy_dev[i]->open = amijoy_open; 14017dd3f0fSDmitry Torokhov amijoy_dev[i]->close = amijoy_close; 14117dd3f0fSDmitry Torokhov 14217dd3f0fSDmitry Torokhov amijoy_dev[i]->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 14317dd3f0fSDmitry Torokhov amijoy_dev[i]->absbit[0] = BIT(ABS_X) | BIT(ABS_Y); 14417dd3f0fSDmitry Torokhov amijoy_dev[i]->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); 1451da177e4SLinus Torvalds for (j = 0; j < 2; j++) { 14617dd3f0fSDmitry Torokhov amijoy_dev[i]->absmin[ABS_X + j] = -1; 14717dd3f0fSDmitry Torokhov amijoy_dev[i]->absmax[ABS_X + j] = 1; 1481da177e4SLinus Torvalds } 1491da177e4SLinus Torvalds 15017dd3f0fSDmitry Torokhov input_register_device(amijoy_dev[i]); 1511da177e4SLinus Torvalds } 1521da177e4SLinus Torvalds return 0; 15317dd3f0fSDmitry Torokhov 15417dd3f0fSDmitry Torokhov fail: while (--i >= 0) 15517dd3f0fSDmitry Torokhov if (amijoy[i]) { 15617dd3f0fSDmitry Torokhov input_unregister_device(amijoy_dev[i]); 15717dd3f0fSDmitry Torokhov release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); 15817dd3f0fSDmitry Torokhov } 15917dd3f0fSDmitry Torokhov return err; 1601da177e4SLinus Torvalds } 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds static void __exit amijoy_exit(void) 1631da177e4SLinus Torvalds { 1641da177e4SLinus Torvalds int i; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds for (i = 0; i < 2; i++) 1671da177e4SLinus Torvalds if (amijoy[i]) { 16817dd3f0fSDmitry Torokhov input_unregister_device(amijoy_dev[i]); 1691da177e4SLinus Torvalds release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); 1701da177e4SLinus Torvalds } 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds module_init(amijoy_init); 1741da177e4SLinus Torvalds module_exit(amijoy_exit); 175