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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | /* * 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++) { input_set_abs_params(amijoy_dev[i], ABS_X + j, -1, 1, 0, 0); } 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); |