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 #include <linux/mutex.h> 42 43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 44 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 45 MODULE_LICENSE("GPL"); 46 47 struct db9_config { 48 int args[2]; 49 int nargs; 50 }; 51 52 #define DB9_MAX_PORTS 3 53 static struct db9_config db9[DB9_MAX_PORTS] __initdata; 54 55 module_param_array_named(dev, db9[0].args, int, &db9[0].nargs, 0); 56 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 57 module_param_array_named(dev2, db9[1].args, int, &db9[0].nargs, 0); 58 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 59 module_param_array_named(dev3, db9[2].args, int, &db9[2].nargs, 0); 60 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 61 62 __obsolete_setup("db9="); 63 __obsolete_setup("db9_2="); 64 __obsolete_setup("db9_3="); 65 66 #define DB9_ARG_PARPORT 0 67 #define DB9_ARG_MODE 1 68 69 #define DB9_MULTI_STICK 0x01 70 #define DB9_MULTI2_STICK 0x02 71 #define DB9_GENESIS_PAD 0x03 72 #define DB9_GENESIS5_PAD 0x05 73 #define DB9_GENESIS6_PAD 0x06 74 #define DB9_SATURN_PAD 0x07 75 #define DB9_MULTI_0802 0x08 76 #define DB9_MULTI_0802_2 0x09 77 #define DB9_CD32_PAD 0x0A 78 #define DB9_SATURN_DPP 0x0B 79 #define DB9_SATURN_DPP_2 0x0C 80 #define DB9_MAX_PAD 0x0D 81 82 #define DB9_UP 0x01 83 #define DB9_DOWN 0x02 84 #define DB9_LEFT 0x04 85 #define DB9_RIGHT 0x08 86 #define DB9_FIRE1 0x10 87 #define DB9_FIRE2 0x20 88 #define DB9_FIRE3 0x40 89 #define DB9_FIRE4 0x80 90 91 #define DB9_NORMAL 0x0a 92 #define DB9_NOSELECT 0x08 93 94 #define DB9_GENESIS6_DELAY 14 95 #define DB9_REFRESH_TIME HZ/100 96 97 #define DB9_MAX_DEVICES 2 98 99 struct db9_mode_data { 100 const char *name; 101 const short *buttons; 102 int n_buttons; 103 int n_pads; 104 int n_axis; 105 int bidirectional; 106 int reverse; 107 }; 108 109 struct db9 { 110 struct input_dev *dev[DB9_MAX_DEVICES]; 111 struct timer_list timer; 112 struct pardevice *pd; 113 int mode; 114 int used; 115 struct mutex mutex; 116 char phys[DB9_MAX_DEVICES][32]; 117 }; 118 119 static struct db9 *db9_base[3]; 120 121 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 122 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 123 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 124 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 }; 125 126 static const struct db9_mode_data db9_modes[] = { 127 { NULL, NULL, 0, 0, 0, 0, 0 }, 128 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 129 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 130 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 131 { NULL, NULL, 0, 0, 0, 0, 0 }, 132 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 133 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 134 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 135 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 136 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 137 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 138 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 139 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 140 }; 141 142 /* 143 * Saturn controllers 144 */ 145 #define DB9_SATURN_DELAY 300 146 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 147 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 148 149 /* 150 * db9_saturn_write_sub() writes 2 bit data. 151 */ 152 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 153 { 154 unsigned char c; 155 156 switch (type) { 157 case 1: /* DPP1 */ 158 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 159 parport_write_data(port, c); 160 break; 161 case 2: /* DPP2 */ 162 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 163 parport_write_data(port, c); 164 break; 165 case 0: /* DB9 */ 166 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 167 parport_write_control(port, c); 168 break; 169 } 170 } 171 172 /* 173 * gc_saturn_read_sub() reads 4 bit data. 174 */ 175 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 176 { 177 unsigned char data; 178 179 if (type) { 180 /* DPP */ 181 data = parport_read_status(port) ^ 0x80; 182 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 183 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 184 } else { 185 /* DB9 */ 186 data = parport_read_data(port) & 0x0f; 187 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 188 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 189 } 190 } 191 192 /* 193 * db9_saturn_read_analog() sends clock and reads 8 bit data. 194 */ 195 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 196 { 197 unsigned char data; 198 199 db9_saturn_write_sub(port, type, 0, powered, 0); 200 udelay(DB9_SATURN_DELAY); 201 data = db9_saturn_read_sub(port, type) << 4; 202 db9_saturn_write_sub(port, type, 2, powered, 0); 203 udelay(DB9_SATURN_DELAY); 204 data |= db9_saturn_read_sub(port, type); 205 return data; 206 } 207 208 /* 209 * db9_saturn_read_packet() reads whole saturn packet at connector 210 * and returns device identifier code. 211 */ 212 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 213 { 214 int i, j; 215 unsigned char tmp; 216 217 db9_saturn_write_sub(port, type, 3, powered, 0); 218 data[0] = db9_saturn_read_sub(port, type); 219 switch (data[0] & 0x0f) { 220 case 0xf: 221 /* 1111 no pad */ 222 return data[0] = 0xff; 223 case 0x4: case 0x4 | 0x8: 224 /* ?100 : digital controller */ 225 db9_saturn_write_sub(port, type, 0, powered, 1); 226 data[2] = db9_saturn_read_sub(port, type) << 4; 227 db9_saturn_write_sub(port, type, 2, powered, 1); 228 data[1] = db9_saturn_read_sub(port, type) << 4; 229 db9_saturn_write_sub(port, type, 1, powered, 1); 230 data[1] |= db9_saturn_read_sub(port, type); 231 db9_saturn_write_sub(port, type, 3, powered, 1); 232 /* data[2] |= db9_saturn_read_sub(port, type); */ 233 data[2] |= data[0]; 234 return data[0] = 0x02; 235 case 0x1: 236 /* 0001 : analog controller or multitap */ 237 db9_saturn_write_sub(port, type, 2, powered, 0); 238 udelay(DB9_SATURN_DELAY); 239 data[0] = db9_saturn_read_analog(port, type, powered); 240 if (data[0] != 0x41) { 241 /* read analog controller */ 242 for (i = 0; i < (data[0] & 0x0f); i++) 243 data[i + 1] = db9_saturn_read_analog(port, type, powered); 244 db9_saturn_write_sub(port, type, 3, powered, 0); 245 return data[0]; 246 } else { 247 /* read multitap */ 248 if (db9_saturn_read_analog(port, type, powered) != 0x60) 249 return data[0] = 0xff; 250 for (i = 0; i < 60; i += 10) { 251 data[i] = db9_saturn_read_analog(port, type, powered); 252 if (data[i] != 0xff) 253 /* read each pad */ 254 for (j = 0; j < (data[i] & 0x0f); j++) 255 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 256 } 257 db9_saturn_write_sub(port, type, 3, powered, 0); 258 return 0x41; 259 } 260 case 0x0: 261 /* 0000 : mouse */ 262 db9_saturn_write_sub(port, type, 2, powered, 0); 263 udelay(DB9_SATURN_DELAY); 264 tmp = db9_saturn_read_analog(port, type, powered); 265 if (tmp == 0xff) { 266 for (i = 0; i < 3; i++) 267 data[i + 1] = db9_saturn_read_analog(port, type, powered); 268 db9_saturn_write_sub(port, type, 3, powered, 0); 269 return data[0] = 0xe3; 270 } 271 default: 272 return data[0]; 273 } 274 } 275 276 /* 277 * db9_saturn_report() analyzes packet and reports. 278 */ 279 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 280 { 281 struct input_dev *dev; 282 int tmp, i, j; 283 284 tmp = (id == 0x41) ? 60 : 10; 285 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 286 dev = devs[n]; 287 switch (data[j]) { 288 case 0x16: /* multi controller (analog 4 axis) */ 289 input_report_abs(dev, db9_abs[5], data[j + 6]); 290 case 0x15: /* mission stick (analog 3 axis) */ 291 input_report_abs(dev, db9_abs[3], data[j + 4]); 292 input_report_abs(dev, db9_abs[4], data[j + 5]); 293 case 0x13: /* racing controller (analog 1 axis) */ 294 input_report_abs(dev, db9_abs[2], data[j + 3]); 295 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 296 case 0x02: /* digital pad (digital 2 axis + buttons) */ 297 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 298 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 299 for (i = 0; i < 9; i++) 300 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 301 break; 302 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 303 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 304 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 305 for (i = 0; i < 9; i++) 306 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 307 input_report_abs(dev, db9_abs[2], data[j + 3]); 308 input_report_abs(dev, db9_abs[3], data[j + 4]); 309 input_report_abs(dev, db9_abs[4], data[j + 5]); 310 /* 311 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 312 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 313 */ 314 input_report_abs(dev, db9_abs[6], data[j + 7]); 315 input_report_abs(dev, db9_abs[7], data[j + 8]); 316 input_report_abs(dev, db9_abs[5], data[j + 9]); 317 break; 318 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 319 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 320 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 321 break; 322 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 323 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 324 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 325 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 326 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 327 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 328 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 329 break; 330 case 0xff: 331 default: /* no pad */ 332 input_report_abs(dev, db9_abs[0], 0); 333 input_report_abs(dev, db9_abs[1], 0); 334 for (i = 0; i < 9; i++) 335 input_report_key(dev, db9_cd32_btn[i], 0); 336 break; 337 } 338 } 339 return n; 340 } 341 342 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 343 { 344 unsigned char id, data[60]; 345 int type, n, max_pads; 346 int tmp, i; 347 348 switch (mode) { 349 case DB9_SATURN_PAD: 350 type = 0; 351 n = 1; 352 break; 353 case DB9_SATURN_DPP: 354 type = 1; 355 n = 1; 356 break; 357 case DB9_SATURN_DPP_2: 358 type = 1; 359 n = 2; 360 break; 361 default: 362 return -1; 363 } 364 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 365 for (tmp = 0, i = 0; i < n; i++) { 366 id = db9_saturn_read_packet(port, data, type + i, 1); 367 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 368 } 369 return 0; 370 } 371 372 static void db9_timer(unsigned long private) 373 { 374 struct db9 *db9 = (void *) private; 375 struct parport *port = db9->pd->port; 376 struct input_dev *dev = db9->dev[0]; 377 struct input_dev *dev2 = db9->dev[1]; 378 int data, i; 379 380 switch (db9->mode) { 381 case DB9_MULTI_0802_2: 382 383 data = parport_read_data(port) >> 3; 384 385 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 386 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 387 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 388 389 case DB9_MULTI_0802: 390 391 data = parport_read_status(port) >> 3; 392 393 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 394 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 395 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 396 break; 397 398 case DB9_MULTI_STICK: 399 400 data = parport_read_data(port); 401 402 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 403 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 404 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 405 break; 406 407 case DB9_MULTI2_STICK: 408 409 data = parport_read_data(port); 410 411 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 412 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 413 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 414 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 415 break; 416 417 case DB9_GENESIS_PAD: 418 419 parport_write_control(port, DB9_NOSELECT); 420 data = parport_read_data(port); 421 422 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 423 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 424 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 425 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 426 427 parport_write_control(port, DB9_NORMAL); 428 data = parport_read_data(port); 429 430 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 431 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 432 break; 433 434 case DB9_GENESIS5_PAD: 435 436 parport_write_control(port, DB9_NOSELECT); 437 data = parport_read_data(port); 438 439 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 440 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 441 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 442 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 443 444 parport_write_control(port, DB9_NORMAL); 445 data = parport_read_data(port); 446 447 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 448 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 449 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 450 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 451 break; 452 453 case DB9_GENESIS6_PAD: 454 455 parport_write_control(port, DB9_NOSELECT); /* 1 */ 456 udelay(DB9_GENESIS6_DELAY); 457 data = parport_read_data(port); 458 459 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 460 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 461 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 462 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 463 464 parport_write_control(port, DB9_NORMAL); 465 udelay(DB9_GENESIS6_DELAY); 466 data = parport_read_data(port); 467 468 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 469 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 470 471 parport_write_control(port, DB9_NOSELECT); /* 2 */ 472 udelay(DB9_GENESIS6_DELAY); 473 parport_write_control(port, DB9_NORMAL); 474 udelay(DB9_GENESIS6_DELAY); 475 parport_write_control(port, DB9_NOSELECT); /* 3 */ 476 udelay(DB9_GENESIS6_DELAY); 477 data=parport_read_data(port); 478 479 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 480 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 481 input_report_key(dev, BTN_Z, ~data & DB9_UP); 482 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 483 484 parport_write_control(port, DB9_NORMAL); 485 udelay(DB9_GENESIS6_DELAY); 486 parport_write_control(port, DB9_NOSELECT); /* 4 */ 487 udelay(DB9_GENESIS6_DELAY); 488 parport_write_control(port, DB9_NORMAL); 489 break; 490 491 case DB9_SATURN_PAD: 492 case DB9_SATURN_DPP: 493 case DB9_SATURN_DPP_2: 494 495 db9_saturn(db9->mode, port, db9->dev); 496 break; 497 498 case DB9_CD32_PAD: 499 500 data = parport_read_data(port); 501 502 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 503 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 504 505 parport_write_control(port, 0x0a); 506 507 for (i = 0; i < 7; i++) { 508 data = parport_read_data(port); 509 parport_write_control(port, 0x02); 510 parport_write_control(port, 0x0a); 511 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 512 } 513 514 parport_write_control(port, 0x00); 515 break; 516 } 517 518 input_sync(dev); 519 520 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 521 } 522 523 static int db9_open(struct input_dev *dev) 524 { 525 struct db9 *db9 = dev->private; 526 struct parport *port = db9->pd->port; 527 int err; 528 529 err = mutex_lock_interruptible(&db9->mutex); 530 if (err) 531 return err; 532 533 if (!db9->used++) { 534 parport_claim(db9->pd); 535 parport_write_data(port, 0xff); 536 if (db9_modes[db9->mode].reverse) { 537 parport_data_reverse(port); 538 parport_write_control(port, DB9_NORMAL); 539 } 540 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 541 } 542 543 mutex_unlock(&db9->mutex); 544 return 0; 545 } 546 547 static void db9_close(struct input_dev *dev) 548 { 549 struct db9 *db9 = dev->private; 550 struct parport *port = db9->pd->port; 551 552 mutex_lock(&db9->mutex); 553 if (!--db9->used) { 554 del_timer_sync(&db9->timer); 555 parport_write_control(port, 0x00); 556 parport_data_forward(port); 557 parport_release(db9->pd); 558 } 559 mutex_unlock(&db9->mutex); 560 } 561 562 static struct db9 __init *db9_probe(int parport, int mode) 563 { 564 struct db9 *db9; 565 const struct db9_mode_data *db9_mode; 566 struct parport *pp; 567 struct pardevice *pd; 568 struct input_dev *input_dev; 569 int i, j; 570 int err; 571 572 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 573 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 574 err = -EINVAL; 575 goto err_out; 576 } 577 578 db9_mode = &db9_modes[mode]; 579 580 pp = parport_find_number(parport); 581 if (!pp) { 582 printk(KERN_ERR "db9.c: no such parport\n"); 583 err = -ENODEV; 584 goto err_out; 585 } 586 587 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 588 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 589 err = -EINVAL; 590 goto err_put_pp; 591 } 592 593 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 594 if (!pd) { 595 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 596 err = -EBUSY; 597 goto err_put_pp; 598 } 599 600 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 601 if (!db9) { 602 printk(KERN_ERR "db9.c: Not enough memory\n"); 603 err = -ENOMEM; 604 goto err_unreg_pardev; 605 } 606 607 mutex_init(&db9->mutex); 608 db9->pd = pd; 609 db9->mode = mode; 610 init_timer(&db9->timer); 611 db9->timer.data = (long) db9; 612 db9->timer.function = db9_timer; 613 614 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 615 616 db9->dev[i] = input_dev = input_allocate_device(); 617 if (!input_dev) { 618 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 619 err = -ENOMEM; 620 goto err_unreg_devs; 621 } 622 623 snprintf(db9->phys[i], sizeof(db9->phys[i]), 624 "%s/input%d", db9->pd->port->name, i); 625 626 input_dev->name = db9_mode->name; 627 input_dev->phys = db9->phys[i]; 628 input_dev->id.bustype = BUS_PARPORT; 629 input_dev->id.vendor = 0x0002; 630 input_dev->id.product = mode; 631 input_dev->id.version = 0x0100; 632 input_dev->private = db9; 633 634 input_dev->open = db9_open; 635 input_dev->close = db9_close; 636 637 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 638 for (j = 0; j < db9_mode->n_buttons; j++) 639 set_bit(db9_mode->buttons[j], input_dev->keybit); 640 for (j = 0; j < db9_mode->n_axis; j++) { 641 if (j < 2) 642 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 643 else 644 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 645 } 646 647 err = input_register_device(input_dev); 648 if (err) 649 goto err_free_dev; 650 } 651 652 parport_put_port(pp); 653 return db9; 654 655 err_free_dev: 656 input_free_device(db9->dev[i]); 657 err_unreg_devs: 658 while (--i >= 0) 659 input_unregister_device(db9->dev[i]); 660 kfree(db9); 661 err_unreg_pardev: 662 parport_unregister_device(pd); 663 err_put_pp: 664 parport_put_port(pp); 665 err_out: 666 return ERR_PTR(err); 667 } 668 669 static void db9_remove(struct db9 *db9) 670 { 671 int i; 672 673 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 674 input_unregister_device(db9->dev[i]); 675 parport_unregister_device(db9->pd); 676 kfree(db9); 677 } 678 679 static int __init db9_init(void) 680 { 681 int i; 682 int have_dev = 0; 683 int err = 0; 684 685 for (i = 0; i < DB9_MAX_PORTS; i++) { 686 if (db9[i].nargs == 0 || db9[i].args[DB9_ARG_PARPORT] < 0) 687 continue; 688 689 if (db9[i].nargs < 2) { 690 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 691 err = -EINVAL; 692 break; 693 } 694 695 db9_base[i] = db9_probe(db9[i].args[DB9_ARG_PARPORT], 696 db9[i].args[DB9_ARG_MODE]); 697 if (IS_ERR(db9_base[i])) { 698 err = PTR_ERR(db9_base[i]); 699 break; 700 } 701 702 have_dev = 1; 703 } 704 705 if (err) { 706 while (--i >= 0) 707 if (db9_base[i]) 708 db9_remove(db9_base[i]); 709 return err; 710 } 711 712 return have_dev ? 0 : -ENODEV; 713 } 714 715 static void __exit db9_exit(void) 716 { 717 int i; 718 719 for (i = 0; i < DB9_MAX_PORTS; i++) 720 if (db9_base[i]) 721 db9_remove(db9_base[i]); 722 } 723 724 module_init(db9_init); 725 module_exit(db9_exit); 726