1 /* 2 * $Id: interact.c,v 1.16 2002/01/22 20:28:25 vojtech Exp $ 3 * 4 * Copyright (c) 2001 Vojtech Pavlik 5 * 6 * Based on the work of: 7 * Toby Deshane 8 */ 9 10 /* 11 * InterAct digital gamepad/joystick driver for Linux 12 */ 13 14 /* 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 28 * 29 * Should you need to contact me, the author, you can do so either by 30 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 31 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/slab.h> 36 #include <linux/module.h> 37 #include <linux/delay.h> 38 #include <linux/init.h> 39 #include <linux/gameport.h> 40 #include <linux/input.h> 41 #include <linux/jiffies.h> 42 43 #define DRIVER_DESC "InterAct digital joystick driver" 44 45 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 46 MODULE_DESCRIPTION(DRIVER_DESC); 47 MODULE_LICENSE("GPL"); 48 49 #define INTERACT_MAX_START 600 /* 400 us */ 50 #define INTERACT_MAX_STROBE 60 /* 40 us */ 51 #define INTERACT_MAX_LENGTH 32 /* 32 bits */ 52 53 #define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */ 54 #define INTERACT_TYPE_PP8D 1 /* ProPad 8 */ 55 56 struct interact { 57 struct gameport *gameport; 58 struct input_dev *dev; 59 int bads; 60 int reads; 61 unsigned char type; 62 unsigned char length; 63 char phys[32]; 64 }; 65 66 static short interact_abs_hhfx[] = 67 { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 }; 68 static short interact_abs_pp8d[] = 69 { ABS_X, ABS_Y, -1 }; 70 71 static short interact_btn_hhfx[] = 72 { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 }; 73 static short interact_btn_pp8d[] = 74 { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 }; 75 76 struct interact_type { 77 int id; 78 short *abs; 79 short *btn; 80 char *name; 81 unsigned char length; 82 unsigned char b8; 83 }; 84 85 static struct interact_type interact_type[] = { 86 { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 }, 87 { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 }, 88 { 0 }}; 89 90 /* 91 * interact_read_packet() reads and InterAct joystick data. 92 */ 93 94 static int interact_read_packet(struct gameport *gameport, int length, u32 *data) 95 { 96 unsigned long flags; 97 unsigned char u, v; 98 unsigned int t, s; 99 int i; 100 101 i = 0; 102 data[0] = data[1] = data[2] = 0; 103 t = gameport_time(gameport, INTERACT_MAX_START); 104 s = gameport_time(gameport, INTERACT_MAX_STROBE); 105 106 local_irq_save(flags); 107 gameport_trigger(gameport); 108 v = gameport_read(gameport); 109 110 while (t > 0 && i < length) { 111 t--; 112 u = v; v = gameport_read(gameport); 113 if (v & ~u & 0x40) { 114 data[0] = (data[0] << 1) | ((v >> 4) & 1); 115 data[1] = (data[1] << 1) | ((v >> 5) & 1); 116 data[2] = (data[2] << 1) | ((v >> 7) & 1); 117 i++; 118 t = s; 119 } 120 } 121 122 local_irq_restore(flags); 123 124 return i; 125 } 126 127 /* 128 * interact_poll() reads and analyzes InterAct joystick data. 129 */ 130 131 static void interact_poll(struct gameport *gameport) 132 { 133 struct interact *interact = gameport_get_drvdata(gameport); 134 struct input_dev *dev = interact->dev; 135 u32 data[3]; 136 int i; 137 138 interact->reads++; 139 140 if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) { 141 interact->bads++; 142 } else { 143 144 for (i = 0; i < 3; i++) 145 data[i] <<= INTERACT_MAX_LENGTH - interact->length; 146 147 switch (interact->type) { 148 149 case INTERACT_TYPE_HHFX: 150 151 for (i = 0; i < 4; i++) 152 input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff); 153 154 for (i = 0; i < 2; i++) 155 input_report_abs(dev, ABS_HAT0Y - i, 156 ((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1)); 157 158 for (i = 0; i < 8; i++) 159 input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1); 160 161 for (i = 0; i < 4; i++) 162 input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1); 163 164 break; 165 166 case INTERACT_TYPE_PP8D: 167 168 for (i = 0; i < 2; i++) 169 input_report_abs(dev, interact_abs_pp8d[i], 170 ((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1)); 171 172 for (i = 0; i < 8; i++) 173 input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1); 174 175 break; 176 } 177 } 178 179 input_sync(dev); 180 } 181 182 /* 183 * interact_open() is a callback from the input open routine. 184 */ 185 186 static int interact_open(struct input_dev *dev) 187 { 188 struct interact *interact = input_get_drvdata(dev); 189 190 gameport_start_polling(interact->gameport); 191 return 0; 192 } 193 194 /* 195 * interact_close() is a callback from the input close routine. 196 */ 197 198 static void interact_close(struct input_dev *dev) 199 { 200 struct interact *interact = input_get_drvdata(dev); 201 202 gameport_stop_polling(interact->gameport); 203 } 204 205 /* 206 * interact_connect() probes for InterAct joysticks. 207 */ 208 209 static int interact_connect(struct gameport *gameport, struct gameport_driver *drv) 210 { 211 struct interact *interact; 212 struct input_dev *input_dev; 213 __u32 data[3]; 214 int i, t; 215 int err; 216 217 interact = kzalloc(sizeof(struct interact), GFP_KERNEL); 218 input_dev = input_allocate_device(); 219 if (!interact || !input_dev) { 220 err = -ENOMEM; 221 goto fail1; 222 } 223 224 interact->gameport = gameport; 225 interact->dev = input_dev; 226 227 gameport_set_drvdata(gameport, interact); 228 229 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 230 if (err) 231 goto fail1; 232 233 i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data); 234 235 if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) { 236 err = -ENODEV; 237 goto fail2; 238 } 239 240 for (i = 0; interact_type[i].length; i++) 241 if (interact_type[i].id == (data[2] >> 16)) 242 break; 243 244 if (!interact_type[i].length) { 245 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n", 246 gameport->phys, i, data[0], data[1], data[2]); 247 err = -ENODEV; 248 goto fail2; 249 } 250 251 gameport_set_poll_handler(gameport, interact_poll); 252 gameport_set_poll_interval(gameport, 20); 253 254 snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys); 255 256 interact->type = i; 257 interact->length = interact_type[i].length; 258 259 input_dev->name = interact_type[i].name; 260 input_dev->phys = interact->phys; 261 input_dev->id.bustype = BUS_GAMEPORT; 262 input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT; 263 input_dev->id.product = interact_type[i].id; 264 input_dev->id.version = 0x0100; 265 input_dev->dev.parent = &gameport->dev; 266 267 input_set_drvdata(input_dev, interact); 268 269 input_dev->open = interact_open; 270 input_dev->close = interact_close; 271 272 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 273 274 for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) { 275 set_bit(t, input_dev->absbit); 276 if (i < interact_type[interact->type].b8) { 277 input_dev->absmin[t] = 0; 278 input_dev->absmax[t] = 255; 279 } else { 280 input_dev->absmin[t] = -1; 281 input_dev->absmax[t] = 1; 282 } 283 } 284 285 for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++) 286 set_bit(t, input_dev->keybit); 287 288 err = input_register_device(interact->dev); 289 if (err) 290 goto fail2; 291 292 return 0; 293 294 fail2: gameport_close(gameport); 295 fail1: gameport_set_drvdata(gameport, NULL); 296 input_free_device(input_dev); 297 kfree(interact); 298 return err; 299 } 300 301 static void interact_disconnect(struct gameport *gameport) 302 { 303 struct interact *interact = gameport_get_drvdata(gameport); 304 305 input_unregister_device(interact->dev); 306 gameport_close(gameport); 307 gameport_set_drvdata(gameport, NULL); 308 kfree(interact); 309 } 310 311 static struct gameport_driver interact_drv = { 312 .driver = { 313 .name = "interact", 314 }, 315 .description = DRIVER_DESC, 316 .connect = interact_connect, 317 .disconnect = interact_disconnect, 318 }; 319 320 static int __init interact_init(void) 321 { 322 gameport_register_driver(&interact_drv); 323 return 0; 324 } 325 326 static void __exit interact_exit(void) 327 { 328 gameport_unregister_driver(&interact_drv); 329 } 330 331 module_init(interact_init); 332 module_exit(interact_exit); 333