1 /* 2 * $Id: db9.c,v 1.13 2002/04/07 20:13:37 vojtech Exp $ 3 * 4 * Copyright (c) 1999-2001 Vojtech Pavlik 5 * 6 * Based on the work of: 7 * Andree Borrmann Mats Sj�vall 8 */ 9 10 /* 11 * Atari, Amstrad, Commodore, Amiga, Sega, etc. 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/module.h> 36 #include <linux/moduleparam.h> 37 #include <linux/delay.h> 38 #include <linux/init.h> 39 #include <linux/parport.h> 40 #include <linux/input.h> 41 42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 43 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 44 MODULE_LICENSE("GPL"); 45 46 struct db9_config { 47 int args[2]; 48 int nargs; 49 }; 50 51 #define DB9_MAX_PORTS 3 52 static struct db9_config db9[DB9_MAX_PORTS] __initdata; 53 54 module_param_array_named(dev, db9[0].args, int, &db9[0].nargs, 0); 55 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 56 module_param_array_named(dev2, db9[1].args, int, &db9[0].nargs, 0); 57 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 58 module_param_array_named(dev3, db9[2].args, int, &db9[2].nargs, 0); 59 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 60 61 __obsolete_setup("db9="); 62 __obsolete_setup("db9_2="); 63 __obsolete_setup("db9_3="); 64 65 #define DB9_ARG_PARPORT 0 66 #define DB9_ARG_MODE 1 67 68 #define DB9_MULTI_STICK 0x01 69 #define DB9_MULTI2_STICK 0x02 70 #define DB9_GENESIS_PAD 0x03 71 #define DB9_GENESIS5_PAD 0x05 72 #define DB9_GENESIS6_PAD 0x06 73 #define DB9_SATURN_PAD 0x07 74 #define DB9_MULTI_0802 0x08 75 #define DB9_MULTI_0802_2 0x09 76 #define DB9_CD32_PAD 0x0A 77 #define DB9_SATURN_DPP 0x0B 78 #define DB9_SATURN_DPP_2 0x0C 79 #define DB9_MAX_PAD 0x0D 80 81 #define DB9_UP 0x01 82 #define DB9_DOWN 0x02 83 #define DB9_LEFT 0x04 84 #define DB9_RIGHT 0x08 85 #define DB9_FIRE1 0x10 86 #define DB9_FIRE2 0x20 87 #define DB9_FIRE3 0x40 88 #define DB9_FIRE4 0x80 89 90 #define DB9_NORMAL 0x0a 91 #define DB9_NOSELECT 0x08 92 93 #define DB9_GENESIS6_DELAY 14 94 #define DB9_REFRESH_TIME HZ/100 95 96 #define DB9_MAX_DEVICES 2 97 98 struct db9_mode_data { 99 const char *name; 100 const short *buttons; 101 int n_buttons; 102 int n_pads; 103 int n_axis; 104 int bidirectional; 105 int reverse; 106 }; 107 108 struct db9 { 109 struct input_dev *dev[DB9_MAX_DEVICES]; 110 struct timer_list timer; 111 struct pardevice *pd; 112 int mode; 113 int used; 114 struct semaphore sem; 115 char phys[DB9_MAX_DEVICES][32]; 116 }; 117 118 static struct db9 *db9_base[3]; 119 120 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 121 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 122 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 123 static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y }; 124 125 static const struct db9_mode_data db9_modes[] = { 126 { NULL, NULL, 0, 0, 0, 0, 0 }, 127 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 128 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 129 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 130 { NULL, NULL, 0, 0, 0, 0, 0 }, 131 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 132 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 133 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 134 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 135 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 136 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 137 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 138 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 139 }; 140 141 /* 142 * Saturn controllers 143 */ 144 #define DB9_SATURN_DELAY 300 145 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 146 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 147 148 /* 149 * db9_saturn_write_sub() writes 2 bit data. 150 */ 151 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 152 { 153 unsigned char c; 154 155 switch (type) { 156 case 1: /* DPP1 */ 157 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 158 parport_write_data(port, c); 159 break; 160 case 2: /* DPP2 */ 161 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 162 parport_write_data(port, c); 163 break; 164 case 0: /* DB9 */ 165 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 166 parport_write_control(port, c); 167 break; 168 } 169 } 170 171 /* 172 * gc_saturn_read_sub() reads 4 bit data. 173 */ 174 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 175 { 176 unsigned char data; 177 178 if (type) { 179 /* DPP */ 180 data = parport_read_status(port) ^ 0x80; 181 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 182 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 183 } else { 184 /* DB9 */ 185 data = parport_read_data(port) & 0x0f; 186 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 187 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 188 } 189 } 190 191 /* 192 * db9_saturn_read_analog() sends clock and reads 8 bit data. 193 */ 194 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 195 { 196 unsigned char data; 197 198 db9_saturn_write_sub(port, type, 0, powered, 0); 199 udelay(DB9_SATURN_DELAY); 200 data = db9_saturn_read_sub(port, type) << 4; 201 db9_saturn_write_sub(port, type, 2, powered, 0); 202 udelay(DB9_SATURN_DELAY); 203 data |= db9_saturn_read_sub(port, type); 204 return data; 205 } 206 207 /* 208 * db9_saturn_read_packet() reads whole saturn packet at connector 209 * and returns device identifier code. 210 */ 211 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 212 { 213 int i, j; 214 unsigned char tmp; 215 216 db9_saturn_write_sub(port, type, 3, powered, 0); 217 data[0] = db9_saturn_read_sub(port, type); 218 switch (data[0] & 0x0f) { 219 case 0xf: 220 /* 1111 no pad */ 221 return data[0] = 0xff; 222 case 0x4: case 0x4 | 0x8: 223 /* ?100 : digital controller */ 224 db9_saturn_write_sub(port, type, 0, powered, 1); 225 data[2] = db9_saturn_read_sub(port, type) << 4; 226 db9_saturn_write_sub(port, type, 2, powered, 1); 227 data[1] = db9_saturn_read_sub(port, type) << 4; 228 db9_saturn_write_sub(port, type, 1, powered, 1); 229 data[1] |= db9_saturn_read_sub(port, type); 230 db9_saturn_write_sub(port, type, 3, powered, 1); 231 /* data[2] |= db9_saturn_read_sub(port, type); */ 232 data[2] |= data[0]; 233 return data[0] = 0x02; 234 case 0x1: 235 /* 0001 : analog controller or multitap */ 236 db9_saturn_write_sub(port, type, 2, powered, 0); 237 udelay(DB9_SATURN_DELAY); 238 data[0] = db9_saturn_read_analog(port, type, powered); 239 if (data[0] != 0x41) { 240 /* read analog controller */ 241 for (i = 0; i < (data[0] & 0x0f); i++) 242 data[i + 1] = db9_saturn_read_analog(port, type, powered); 243 db9_saturn_write_sub(port, type, 3, powered, 0); 244 return data[0]; 245 } else { 246 /* read multitap */ 247 if (db9_saturn_read_analog(port, type, powered) != 0x60) 248 return data[0] = 0xff; 249 for (i = 0; i < 60; i += 10) { 250 data[i] = db9_saturn_read_analog(port, type, powered); 251 if (data[i] != 0xff) 252 /* read each pad */ 253 for (j = 0; j < (data[i] & 0x0f); j++) 254 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 255 } 256 db9_saturn_write_sub(port, type, 3, powered, 0); 257 return 0x41; 258 } 259 case 0x0: 260 /* 0000 : mouse */ 261 db9_saturn_write_sub(port, type, 2, powered, 0); 262 udelay(DB9_SATURN_DELAY); 263 tmp = db9_saturn_read_analog(port, type, powered); 264 if (tmp == 0xff) { 265 for (i = 0; i < 3; i++) 266 data[i + 1] = db9_saturn_read_analog(port, type, powered); 267 db9_saturn_write_sub(port, type, 3, powered, 0); 268 return data[0] = 0xe3; 269 } 270 default: 271 return data[0]; 272 } 273 } 274 275 /* 276 * db9_saturn_report() analyzes packet and reports. 277 */ 278 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 279 { 280 struct input_dev *dev; 281 int tmp, i, j; 282 283 tmp = (id == 0x41) ? 60 : 10; 284 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 285 dev = devs[n]; 286 switch (data[j]) { 287 case 0x16: /* multi controller (analog 4 axis) */ 288 input_report_abs(dev, db9_abs[5], data[j + 6]); 289 case 0x15: /* mission stick (analog 3 axis) */ 290 input_report_abs(dev, db9_abs[3], data[j + 4]); 291 input_report_abs(dev, db9_abs[4], data[j + 5]); 292 case 0x13: /* racing controller (analog 1 axis) */ 293 input_report_abs(dev, db9_abs[2], data[j + 3]); 294 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 295 case 0x02: /* digital pad (digital 2 axis + buttons) */ 296 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 297 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 298 for (i = 0; i < 9; i++) 299 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 300 break; 301 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 302 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 303 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 304 for (i = 0; i < 9; i++) 305 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 306 input_report_abs(dev, db9_abs[2], data[j + 3]); 307 input_report_abs(dev, db9_abs[3], data[j + 4]); 308 input_report_abs(dev, db9_abs[4], data[j + 5]); 309 /* 310 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 311 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 312 */ 313 input_report_abs(dev, db9_abs[6], data[j + 7]); 314 input_report_abs(dev, db9_abs[7], data[j + 8]); 315 input_report_abs(dev, db9_abs[5], data[j + 9]); 316 break; 317 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 318 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 319 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 320 break; 321 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 322 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 323 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 324 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 325 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 326 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 327 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 328 break; 329 case 0xff: 330 default: /* no pad */ 331 input_report_abs(dev, db9_abs[0], 0); 332 input_report_abs(dev, db9_abs[1], 0); 333 for (i = 0; i < 9; i++) 334 input_report_key(dev, db9_cd32_btn[i], 0); 335 break; 336 } 337 } 338 return n; 339 } 340 341 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 342 { 343 unsigned char id, data[60]; 344 int type, n, max_pads; 345 int tmp, i; 346 347 switch (mode) { 348 case DB9_SATURN_PAD: 349 type = 0; 350 n = 1; 351 break; 352 case DB9_SATURN_DPP: 353 type = 1; 354 n = 1; 355 break; 356 case DB9_SATURN_DPP_2: 357 type = 1; 358 n = 2; 359 break; 360 default: 361 return -1; 362 } 363 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 364 for (tmp = 0, i = 0; i < n; i++) { 365 id = db9_saturn_read_packet(port, data, type + i, 1); 366 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 367 } 368 return 0; 369 } 370 371 static void db9_timer(unsigned long private) 372 { 373 struct db9 *db9 = (void *) private; 374 struct parport *port = db9->pd->port; 375 struct input_dev *dev = db9->dev[0]; 376 struct input_dev *dev2 = db9->dev[1]; 377 int data, i; 378 379 switch (db9->mode) { 380 case DB9_MULTI_0802_2: 381 382 data = parport_read_data(port) >> 3; 383 384 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 385 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 386 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 387 388 case DB9_MULTI_0802: 389 390 data = parport_read_status(port) >> 3; 391 392 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 393 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 394 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 395 break; 396 397 case DB9_MULTI_STICK: 398 399 data = parport_read_data(port); 400 401 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 402 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 403 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 404 break; 405 406 case DB9_MULTI2_STICK: 407 408 data = parport_read_data(port); 409 410 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 411 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 412 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 413 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 414 break; 415 416 case DB9_GENESIS_PAD: 417 418 parport_write_control(port, DB9_NOSELECT); 419 data = parport_read_data(port); 420 421 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 422 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 423 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 424 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 425 426 parport_write_control(port, DB9_NORMAL); 427 data = parport_read_data(port); 428 429 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 430 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 431 break; 432 433 case DB9_GENESIS5_PAD: 434 435 parport_write_control(port, DB9_NOSELECT); 436 data = parport_read_data(port); 437 438 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 439 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 440 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 441 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 442 443 parport_write_control(port, DB9_NORMAL); 444 data = parport_read_data(port); 445 446 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 447 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 448 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 449 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 450 break; 451 452 case DB9_GENESIS6_PAD: 453 454 parport_write_control(port, DB9_NOSELECT); /* 1 */ 455 udelay(DB9_GENESIS6_DELAY); 456 data = parport_read_data(port); 457 458 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 459 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 460 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 461 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 462 463 parport_write_control(port, DB9_NORMAL); 464 udelay(DB9_GENESIS6_DELAY); 465 data = parport_read_data(port); 466 467 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 468 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 469 470 parport_write_control(port, DB9_NOSELECT); /* 2 */ 471 udelay(DB9_GENESIS6_DELAY); 472 parport_write_control(port, DB9_NORMAL); 473 udelay(DB9_GENESIS6_DELAY); 474 parport_write_control(port, DB9_NOSELECT); /* 3 */ 475 udelay(DB9_GENESIS6_DELAY); 476 data=parport_read_data(port); 477 478 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 479 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 480 input_report_key(dev, BTN_Z, ~data & DB9_UP); 481 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 482 483 parport_write_control(port, DB9_NORMAL); 484 udelay(DB9_GENESIS6_DELAY); 485 parport_write_control(port, DB9_NOSELECT); /* 4 */ 486 udelay(DB9_GENESIS6_DELAY); 487 parport_write_control(port, DB9_NORMAL); 488 break; 489 490 case DB9_SATURN_PAD: 491 case DB9_SATURN_DPP: 492 case DB9_SATURN_DPP_2: 493 494 db9_saturn(db9->mode, port, db9->dev); 495 break; 496 497 case DB9_CD32_PAD: 498 499 data = parport_read_data(port); 500 501 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 502 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 503 504 parport_write_control(port, 0x0a); 505 506 for (i = 0; i < 7; i++) { 507 data = parport_read_data(port); 508 parport_write_control(port, 0x02); 509 parport_write_control(port, 0x0a); 510 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 511 } 512 513 parport_write_control(port, 0x00); 514 break; 515 } 516 517 input_sync(dev); 518 519 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 520 } 521 522 static int db9_open(struct input_dev *dev) 523 { 524 struct db9 *db9 = dev->private; 525 struct parport *port = db9->pd->port; 526 int err; 527 528 err = down_interruptible(&db9->sem); 529 if (err) 530 return err; 531 532 if (!db9->used++) { 533 parport_claim(db9->pd); 534 parport_write_data(port, 0xff); 535 if (db9_modes[db9->mode].reverse) { 536 parport_data_reverse(port); 537 parport_write_control(port, DB9_NORMAL); 538 } 539 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 540 } 541 542 up(&db9->sem); 543 return 0; 544 } 545 546 static void db9_close(struct input_dev *dev) 547 { 548 struct db9 *db9 = dev->private; 549 struct parport *port = db9->pd->port; 550 551 down(&db9->sem); 552 if (!--db9->used) { 553 del_timer_sync(&db9->timer); 554 parport_write_control(port, 0x00); 555 parport_data_forward(port); 556 parport_release(db9->pd); 557 } 558 up(&db9->sem); 559 } 560 561 static struct db9 __init *db9_probe(int parport, int mode) 562 { 563 struct db9 *db9; 564 const struct db9_mode_data *db9_mode; 565 struct parport *pp; 566 struct pardevice *pd; 567 struct input_dev *input_dev; 568 int i, j; 569 int err; 570 571 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 572 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 573 err = -EINVAL; 574 goto err_out; 575 } 576 577 db9_mode = &db9_modes[mode]; 578 579 pp = parport_find_number(parport); 580 if (!pp) { 581 printk(KERN_ERR "db9.c: no such parport\n"); 582 err = -ENODEV; 583 goto err_out; 584 } 585 586 if (db9_mode[mode].bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 587 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 588 err = -EINVAL; 589 goto err_put_pp; 590 } 591 592 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 593 if (!pd) { 594 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 595 err = -EBUSY; 596 goto err_put_pp; 597 } 598 599 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 600 if (!db9) { 601 printk(KERN_ERR "db9.c: Not enough memory\n"); 602 err = -ENOMEM; 603 goto err_unreg_pardev; 604 } 605 606 init_MUTEX(&db9->sem); 607 db9->pd = pd; 608 db9->mode = mode; 609 init_timer(&db9->timer); 610 db9->timer.data = (long) db9; 611 db9->timer.function = db9_timer; 612 613 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 614 615 db9->dev[i] = input_dev = input_allocate_device(); 616 if (!input_dev) { 617 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 618 err = -ENOMEM; 619 goto err_unreg_devs; 620 } 621 622 sprintf(db9->phys[i], "%s/input%d", db9->pd->port->name, i); 623 624 input_dev->name = db9_mode->name; 625 input_dev->phys = db9->phys[i]; 626 input_dev->id.bustype = BUS_PARPORT; 627 input_dev->id.vendor = 0x0002; 628 input_dev->id.product = mode; 629 input_dev->id.version = 0x0100; 630 input_dev->private = db9; 631 632 input_dev->open = db9_open; 633 input_dev->close = db9_close; 634 635 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 636 for (j = 0; j < db9_mode->n_buttons; j++) 637 set_bit(db9_mode->buttons[j], input_dev->keybit); 638 for (j = 0; j < db9_mode->n_axis; j++) { 639 if (j < 2) 640 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 641 else 642 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 643 } 644 645 err = input_register_device(input_dev); 646 if (err) 647 goto err_free_dev; 648 } 649 650 parport_put_port(pp); 651 return db9; 652 653 err_free_dev: 654 input_free_device(db9->dev[i]); 655 err_unreg_devs: 656 while (--i >= 0) 657 input_unregister_device(db9->dev[i]); 658 kfree(db9); 659 err_unreg_pardev: 660 parport_unregister_device(pd); 661 err_put_pp: 662 parport_put_port(pp); 663 err_out: 664 return ERR_PTR(err); 665 } 666 667 static void db9_remove(struct db9 *db9) 668 { 669 int i; 670 671 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 672 input_unregister_device(db9->dev[i]); 673 parport_unregister_device(db9->pd); 674 kfree(db9); 675 } 676 677 static int __init db9_init(void) 678 { 679 int i; 680 int have_dev = 0; 681 int err = 0; 682 683 for (i = 0; i < DB9_MAX_PORTS; i++) { 684 if (db9[i].nargs == 0 || db9[i].args[DB9_ARG_PARPORT] < 0) 685 continue; 686 687 if (db9[i].nargs < 2) { 688 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 689 err = -EINVAL; 690 break; 691 } 692 693 db9_base[i] = db9_probe(db9[i].args[DB9_ARG_PARPORT], 694 db9[i].args[DB9_ARG_MODE]); 695 if (IS_ERR(db9_base[i])) { 696 err = PTR_ERR(db9_base[i]); 697 break; 698 } 699 700 have_dev = 1; 701 } 702 703 if (err) { 704 while (--i >= 0) 705 if (db9_base[i]) 706 db9_remove(db9_base[i]); 707 return err; 708 } 709 710 return have_dev ? 0 : -ENODEV; 711 } 712 713 static void __exit db9_exit(void) 714 { 715 int i; 716 717 for (i = 0; i < DB9_MAX_PORTS; i++) 718 if (db9_base[i]) 719 db9_remove(db9_base[i]); 720 } 721 722 module_init(db9_init); 723 module_exit(db9_exit); 724