1/* 2 * $Id: amijoy.c,v 1.1.1.1 2008/10/15 03:26:32 james26_jang Exp $ 3 * 4 * Copyright (c) 1998-2000 Vojtech Pavlik 5 * 6 * Sponsored by SuSE 7 */ 8 9/* 10 * Driver for Amiga joysticks for Linux/m68k 11 */ 12 13/* 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 27 * 28 * Should you need to contact me, the author, you can do so either by 29 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: 30 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic 31 */ 32 33#include <linux/types.h> 34#include <linux/errno.h> 35#include <linux/kernel.h> 36#include <linux/module.h> 37#include <linux/init.h> 38#include <linux/input.h> 39 40#include <asm/system.h> 41#include <asm/amigahw.h> 42 43MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); 44MODULE_PARM(amijoy, "1-2i"); 45MODULE_LICENSE("GPL"); 46 47static int amijoy[2] = { 0, 1 }; 48static int amijoy_used[2] = { 0, 0 }; 49static struct input_dev amijoy_dev[2]; 50 51static char *amijoy_name = "Amiga joystick"; 52 53static void amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp) 54{ 55 int i, data = 0, button = 0; 56 57 for (i = 0; i < 2; i++) 58 if (amijoy[i]) { 59 60 switch (i) { 61 case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; 62 case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; 63 } 64 65 input_report_key(amijoy_dev + i, BTN_TRIGGER, button); 66 67 input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1); 68 data = ~(data ^ (data << 1)); 69 input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1); 70 } 71} 72 73static int amijoy_open(struct input_dev *dev) 74{ 75 int *used = dev->private; 76 77 if ((*used)++) 78 return 0; 79 80 if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", NULL)) { 81 (*used)--; 82 printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", amijoy_irq); 83 return -EBUSY; 84 } 85 86 return 0; 87} 88 89static void amijoy_close(struct input_dev *dev) 90{ 91 int *used = dev->private; 92 93 if (!--(*used)) 94 free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); 95} 96 97static int __init amijoy_setup(char *str) 98{ 99 int i; 100 int ints[4] 101 str = get_options(str, ARRAY_SIZE(ints), ints); 102 for (i = 0; i <= ints[0] && i < 2; i++) amijoy[i] = ints[i+1]; 103 return 1; 104} 105__setup("amijoy=", amijoy_setup); 106 107static int __init amijoy_init(void) 108{ 109 int i, j; 110 111 init_timer(amijoy_timer); 112 port->timer.function = amijoy_timer; 113 114 for (i = 0; i < 2; i++) 115 if (amijoy[i]) { 116 if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2, 117 "amijoy [Denise]")) { 118 if (i == 1 && amijoy[0]) { 119 input_unregister_device(amijoy_dev); 120 release_mem_region(CUSTOM_PHYSADDR+10, 2); 121 } 122 return -EBUSY; 123 } 124 125 amijoy_dev[i].open = amijoy_open; 126 amijoy_dev[i].close = amijoy_close; 127 amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 128 amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); 129 amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); 130 for (j = 0; j < 2; j++) { 131 amijoy_dev[i].absmin[ABS_X + j] = -1; 132 amijoy_dev[i].absmax[ABS_X + j] = 1; 133 } 134 135 amijoy->dev[i].name = amijoy_name; 136 amijoy->dev[i].idbus = BUS_AMIGA; 137 amijoy->dev[i].idvendor = 0x0001; 138 amijoy->dev[i].idproduct = 0x0003; 139 amijoy->dev[i].version = 0x0100; 140 141 amijoy_dev[i].private = amijoy_used + i; 142 143 input_register_device(amijoy_dev + i); 144 printk(KERN_INFO "input%d: %s at joy%ddat\n", amijoy_dev[i].number, amijoy_name, i); 145 } 146 return 0; 147} 148 149static void _exit amijoy_exit(void) 150{ 151 int i; 152 153 for (i = 0; i < 2; i++) 154 if (amijoy[i]) { 155 input_unregister_device(amijoy_dev + i); 156 release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2); 157 } 158} 159 160module_init(amijoy_init); 161module_exit(amijoy_exit); 162