1/* 2 * Copyright (c) 1998-2001 Vojtech Pavlik 3 */ 4 5/* 6 * Driver for Amiga joysticks for Linux/m68k 7 */ 8 9/* 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 27 */ 28 29#include <linux/types.h> 30#include <linux/errno.h> 31#include <linux/kernel.h> 32#include <linux/module.h> 33#include <linux/init.h> 34#include <linux/input.h> 35#include <linux/interrupt.h> 36#include <linux/mutex.h> 37 38#include <asm/system.h> 39#include <asm/amigahw.h> 40#include <asm/amigaints.h> 41 42MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 43MODULE_DESCRIPTION("Driver for Amiga joysticks"); 44MODULE_LICENSE("GPL"); 45 46static int amijoy[2] = { 0, 1 }; 47module_param_array_named(map, amijoy, uint, NULL, 0); 48MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)"); 49 50static int amijoy_used; 51static DEFINE_MUTEX(amijoy_mutex); 52static struct input_dev *amijoy_dev[2]; 53static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; 54 55static irqreturn_t amijoy_interrupt(int irq, void *dummy) 56{ 57 int i, data = 0, button = 0; 58 59 for (i = 0; i < 2; i++) 60 if (amijoy[i]) { 61 62 switch (i) { 63 case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; 64 case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; 65 } 66 67 input_report_key(amijoy_dev[i], BTN_TRIGGER, button); 68 69 input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); 70 data = ~(data ^ (data << 1)); 71 input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); 72 73 input_sync(amijoy_dev[i]); 74 } 75 return IRQ_HANDLED; 76} 77 78static int amijoy_open(struct input_dev *dev) 79{ 80 int err; 81 82 err = mutex_lock_interruptible(&amijoy_mutex); 83 if (err) 84 return err; 85 86 if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { 87 printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); 88 err = -EBUSY; 89 goto out; 90 } 91 92 amijoy_used++; 93out: 94 mutex_unlock(&amijoy_mutex); 95 return err; 96} 97 98static void amijoy_close(struct input_dev *dev) 99{ 100 mutex_lock(&amijoy_mutex); 101 if (!--amijoy_used) 102 free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); 103 mutex_unlock(&amijoy_mutex); 104} 105 106static int __init amijoy_init(void) 107{ 108 int i, j; 109 int err; 110 111 for (i = 0; i < 2; i++) { 112 if (!amijoy[i]) 113 continue; 114 115 amijoy_dev[i] = input_allocate_device(); 116 if (!amijoy_dev[i]) { 117 err = -ENOMEM; 118 goto fail; 119 } 120 121 if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) { 122 input_free_device(amijoy_dev[i]); 123 err = -EBUSY; 124 goto fail; 125 } 126 127 amijoy_dev[i]->name = "Amiga joystick"; 128 amijoy_dev[i]->phys = amijoy_phys[i]; 129 amijoy_dev[i]->id.bustype = BUS_AMIGA; 130 amijoy_dev[i]->id.vendor = 0x0001; 131 amijoy_dev[i]->id.product = 0x0003; 132 amijoy_dev[i]->id.version = 0x0100; 133 134 amijoy_dev[i]->open = amijoy_open; 135 amijoy_dev[i]->close = amijoy_close; 136 137 amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 138 amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y); 139 amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 140 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); 141 for (j = 0; j < 2; j++) { 142 input_set_abs_params(amijoy_dev[i], ABS_X + j, 143 -1, 1, 0, 0); 144 } 145 146 err = input_register_device(amijoy_dev[i]); 147 if (err) { 148 input_free_device(amijoy_dev[i]); 149 goto fail; 150 } 151 } 152 return 0; 153 154 fail: while (--i >= 0) 155 if (amijoy[i]) { 156 input_unregister_device(amijoy_dev[i]); 157 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); 158 } 159 return err; 160} 161 162static void __exit amijoy_exit(void) 163{ 164 int i; 165 166 for (i = 0; i < 2; i++) 167 if (amijoy[i]) { 168 input_unregister_device(amijoy_dev[i]); 169 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); 170 } 171} 172 173module_init(amijoy_init); 174module_exit(amijoy_exit); 175