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 Sjövall 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 unsigned int nargs; 50 }; 51 52 #define DB9_MAX_PORTS 3 53 static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata; 54 55 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); 56 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 57 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); 58 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 59 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); 60 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 61 62 #define DB9_ARG_PARPORT 0 63 #define DB9_ARG_MODE 1 64 65 #define DB9_MULTI_STICK 0x01 66 #define DB9_MULTI2_STICK 0x02 67 #define DB9_GENESIS_PAD 0x03 68 #define DB9_GENESIS5_PAD 0x05 69 #define DB9_GENESIS6_PAD 0x06 70 #define DB9_SATURN_PAD 0x07 71 #define DB9_MULTI_0802 0x08 72 #define DB9_MULTI_0802_2 0x09 73 #define DB9_CD32_PAD 0x0A 74 #define DB9_SATURN_DPP 0x0B 75 #define DB9_SATURN_DPP_2 0x0C 76 #define DB9_MAX_PAD 0x0D 77 78 #define DB9_UP 0x01 79 #define DB9_DOWN 0x02 80 #define DB9_LEFT 0x04 81 #define DB9_RIGHT 0x08 82 #define DB9_FIRE1 0x10 83 #define DB9_FIRE2 0x20 84 #define DB9_FIRE3 0x40 85 #define DB9_FIRE4 0x80 86 87 #define DB9_NORMAL 0x0a 88 #define DB9_NOSELECT 0x08 89 90 #define DB9_GENESIS6_DELAY 14 91 #define DB9_REFRESH_TIME HZ/100 92 93 #define DB9_MAX_DEVICES 2 94 95 struct db9_mode_data { 96 const char *name; 97 const short *buttons; 98 int n_buttons; 99 int n_pads; 100 int n_axis; 101 int bidirectional; 102 int reverse; 103 }; 104 105 struct db9 { 106 struct input_dev *dev[DB9_MAX_DEVICES]; 107 struct timer_list timer; 108 struct pardevice *pd; 109 int mode; 110 int used; 111 struct mutex mutex; 112 char phys[DB9_MAX_DEVICES][32]; 113 }; 114 115 static struct db9 *db9_base[3]; 116 117 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 118 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 119 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 120 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 }; 121 122 static const struct db9_mode_data db9_modes[] = { 123 { NULL, NULL, 0, 0, 0, 0, 0 }, 124 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 125 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 126 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 127 { NULL, NULL, 0, 0, 0, 0, 0 }, 128 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 129 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 130 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 131 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 132 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 133 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 134 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 135 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 136 }; 137 138 /* 139 * Saturn controllers 140 */ 141 #define DB9_SATURN_DELAY 300 142 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 143 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 144 145 /* 146 * db9_saturn_write_sub() writes 2 bit data. 147 */ 148 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 149 { 150 unsigned char c; 151 152 switch (type) { 153 case 1: /* DPP1 */ 154 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 155 parport_write_data(port, c); 156 break; 157 case 2: /* DPP2 */ 158 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 159 parport_write_data(port, c); 160 break; 161 case 0: /* DB9 */ 162 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 163 parport_write_control(port, c); 164 break; 165 } 166 } 167 168 /* 169 * gc_saturn_read_sub() reads 4 bit data. 170 */ 171 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 172 { 173 unsigned char data; 174 175 if (type) { 176 /* DPP */ 177 data = parport_read_status(port) ^ 0x80; 178 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 179 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 180 } else { 181 /* DB9 */ 182 data = parport_read_data(port) & 0x0f; 183 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 184 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 185 } 186 } 187 188 /* 189 * db9_saturn_read_analog() sends clock and reads 8 bit data. 190 */ 191 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 192 { 193 unsigned char data; 194 195 db9_saturn_write_sub(port, type, 0, powered, 0); 196 udelay(DB9_SATURN_DELAY); 197 data = db9_saturn_read_sub(port, type) << 4; 198 db9_saturn_write_sub(port, type, 2, powered, 0); 199 udelay(DB9_SATURN_DELAY); 200 data |= db9_saturn_read_sub(port, type); 201 return data; 202 } 203 204 /* 205 * db9_saturn_read_packet() reads whole saturn packet at connector 206 * and returns device identifier code. 207 */ 208 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 209 { 210 int i, j; 211 unsigned char tmp; 212 213 db9_saturn_write_sub(port, type, 3, powered, 0); 214 data[0] = db9_saturn_read_sub(port, type); 215 switch (data[0] & 0x0f) { 216 case 0xf: 217 /* 1111 no pad */ 218 return data[0] = 0xff; 219 case 0x4: case 0x4 | 0x8: 220 /* ?100 : digital controller */ 221 db9_saturn_write_sub(port, type, 0, powered, 1); 222 data[2] = db9_saturn_read_sub(port, type) << 4; 223 db9_saturn_write_sub(port, type, 2, powered, 1); 224 data[1] = db9_saturn_read_sub(port, type) << 4; 225 db9_saturn_write_sub(port, type, 1, powered, 1); 226 data[1] |= db9_saturn_read_sub(port, type); 227 db9_saturn_write_sub(port, type, 3, powered, 1); 228 /* data[2] |= db9_saturn_read_sub(port, type); */ 229 data[2] |= data[0]; 230 return data[0] = 0x02; 231 case 0x1: 232 /* 0001 : analog controller or multitap */ 233 db9_saturn_write_sub(port, type, 2, powered, 0); 234 udelay(DB9_SATURN_DELAY); 235 data[0] = db9_saturn_read_analog(port, type, powered); 236 if (data[0] != 0x41) { 237 /* read analog controller */ 238 for (i = 0; i < (data[0] & 0x0f); i++) 239 data[i + 1] = db9_saturn_read_analog(port, type, powered); 240 db9_saturn_write_sub(port, type, 3, powered, 0); 241 return data[0]; 242 } else { 243 /* read multitap */ 244 if (db9_saturn_read_analog(port, type, powered) != 0x60) 245 return data[0] = 0xff; 246 for (i = 0; i < 60; i += 10) { 247 data[i] = db9_saturn_read_analog(port, type, powered); 248 if (data[i] != 0xff) 249 /* read each pad */ 250 for (j = 0; j < (data[i] & 0x0f); j++) 251 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 252 } 253 db9_saturn_write_sub(port, type, 3, powered, 0); 254 return 0x41; 255 } 256 case 0x0: 257 /* 0000 : mouse */ 258 db9_saturn_write_sub(port, type, 2, powered, 0); 259 udelay(DB9_SATURN_DELAY); 260 tmp = db9_saturn_read_analog(port, type, powered); 261 if (tmp == 0xff) { 262 for (i = 0; i < 3; i++) 263 data[i + 1] = db9_saturn_read_analog(port, type, powered); 264 db9_saturn_write_sub(port, type, 3, powered, 0); 265 return data[0] = 0xe3; 266 } 267 default: 268 return data[0]; 269 } 270 } 271 272 /* 273 * db9_saturn_report() analyzes packet and reports. 274 */ 275 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 276 { 277 struct input_dev *dev; 278 int tmp, i, j; 279 280 tmp = (id == 0x41) ? 60 : 10; 281 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 282 dev = devs[n]; 283 switch (data[j]) { 284 case 0x16: /* multi controller (analog 4 axis) */ 285 input_report_abs(dev, db9_abs[5], data[j + 6]); 286 case 0x15: /* mission stick (analog 3 axis) */ 287 input_report_abs(dev, db9_abs[3], data[j + 4]); 288 input_report_abs(dev, db9_abs[4], data[j + 5]); 289 case 0x13: /* racing controller (analog 1 axis) */ 290 input_report_abs(dev, db9_abs[2], data[j + 3]); 291 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 292 case 0x02: /* digital pad (digital 2 axis + buttons) */ 293 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 294 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 295 for (i = 0; i < 9; i++) 296 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 297 break; 298 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 299 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 300 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 301 for (i = 0; i < 9; i++) 302 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 303 input_report_abs(dev, db9_abs[2], data[j + 3]); 304 input_report_abs(dev, db9_abs[3], data[j + 4]); 305 input_report_abs(dev, db9_abs[4], data[j + 5]); 306 /* 307 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 308 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 309 */ 310 input_report_abs(dev, db9_abs[6], data[j + 7]); 311 input_report_abs(dev, db9_abs[7], data[j + 8]); 312 input_report_abs(dev, db9_abs[5], data[j + 9]); 313 break; 314 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 315 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 316 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 317 break; 318 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 319 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 320 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 321 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 322 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 323 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 324 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 325 break; 326 case 0xff: 327 default: /* no pad */ 328 input_report_abs(dev, db9_abs[0], 0); 329 input_report_abs(dev, db9_abs[1], 0); 330 for (i = 0; i < 9; i++) 331 input_report_key(dev, db9_cd32_btn[i], 0); 332 break; 333 } 334 } 335 return n; 336 } 337 338 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 339 { 340 unsigned char id, data[60]; 341 int type, n, max_pads; 342 int tmp, i; 343 344 switch (mode) { 345 case DB9_SATURN_PAD: 346 type = 0; 347 n = 1; 348 break; 349 case DB9_SATURN_DPP: 350 type = 1; 351 n = 1; 352 break; 353 case DB9_SATURN_DPP_2: 354 type = 1; 355 n = 2; 356 break; 357 default: 358 return -1; 359 } 360 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 361 for (tmp = 0, i = 0; i < n; i++) { 362 id = db9_saturn_read_packet(port, data, type + i, 1); 363 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 364 } 365 return 0; 366 } 367 368 static void db9_timer(unsigned long private) 369 { 370 struct db9 *db9 = (void *) private; 371 struct parport *port = db9->pd->port; 372 struct input_dev *dev = db9->dev[0]; 373 struct input_dev *dev2 = db9->dev[1]; 374 int data, i; 375 376 switch (db9->mode) { 377 case DB9_MULTI_0802_2: 378 379 data = parport_read_data(port) >> 3; 380 381 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 382 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 383 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 384 385 case DB9_MULTI_0802: 386 387 data = parport_read_status(port) >> 3; 388 389 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 390 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 391 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 392 break; 393 394 case DB9_MULTI_STICK: 395 396 data = parport_read_data(port); 397 398 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 399 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 400 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 401 break; 402 403 case DB9_MULTI2_STICK: 404 405 data = parport_read_data(port); 406 407 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 408 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 409 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 410 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 411 break; 412 413 case DB9_GENESIS_PAD: 414 415 parport_write_control(port, DB9_NOSELECT); 416 data = parport_read_data(port); 417 418 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 419 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 420 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 421 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 422 423 parport_write_control(port, DB9_NORMAL); 424 data = parport_read_data(port); 425 426 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 427 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 428 break; 429 430 case DB9_GENESIS5_PAD: 431 432 parport_write_control(port, DB9_NOSELECT); 433 data = parport_read_data(port); 434 435 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 436 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 437 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 438 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 439 440 parport_write_control(port, DB9_NORMAL); 441 data = parport_read_data(port); 442 443 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 444 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 445 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 446 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 447 break; 448 449 case DB9_GENESIS6_PAD: 450 451 parport_write_control(port, DB9_NOSELECT); /* 1 */ 452 udelay(DB9_GENESIS6_DELAY); 453 data = parport_read_data(port); 454 455 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 456 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 457 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 458 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 459 460 parport_write_control(port, DB9_NORMAL); 461 udelay(DB9_GENESIS6_DELAY); 462 data = parport_read_data(port); 463 464 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 465 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 466 467 parport_write_control(port, DB9_NOSELECT); /* 2 */ 468 udelay(DB9_GENESIS6_DELAY); 469 parport_write_control(port, DB9_NORMAL); 470 udelay(DB9_GENESIS6_DELAY); 471 parport_write_control(port, DB9_NOSELECT); /* 3 */ 472 udelay(DB9_GENESIS6_DELAY); 473 data=parport_read_data(port); 474 475 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 476 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 477 input_report_key(dev, BTN_Z, ~data & DB9_UP); 478 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 479 480 parport_write_control(port, DB9_NORMAL); 481 udelay(DB9_GENESIS6_DELAY); 482 parport_write_control(port, DB9_NOSELECT); /* 4 */ 483 udelay(DB9_GENESIS6_DELAY); 484 parport_write_control(port, DB9_NORMAL); 485 break; 486 487 case DB9_SATURN_PAD: 488 case DB9_SATURN_DPP: 489 case DB9_SATURN_DPP_2: 490 491 db9_saturn(db9->mode, port, db9->dev); 492 break; 493 494 case DB9_CD32_PAD: 495 496 data = parport_read_data(port); 497 498 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 499 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 500 501 parport_write_control(port, 0x0a); 502 503 for (i = 0; i < 7; i++) { 504 data = parport_read_data(port); 505 parport_write_control(port, 0x02); 506 parport_write_control(port, 0x0a); 507 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 508 } 509 510 parport_write_control(port, 0x00); 511 break; 512 } 513 514 input_sync(dev); 515 516 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 517 } 518 519 static int db9_open(struct input_dev *dev) 520 { 521 struct db9 *db9 = input_get_drvdata(dev); 522 struct parport *port = db9->pd->port; 523 int err; 524 525 err = mutex_lock_interruptible(&db9->mutex); 526 if (err) 527 return err; 528 529 if (!db9->used++) { 530 parport_claim(db9->pd); 531 parport_write_data(port, 0xff); 532 if (db9_modes[db9->mode].reverse) { 533 parport_data_reverse(port); 534 parport_write_control(port, DB9_NORMAL); 535 } 536 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 537 } 538 539 mutex_unlock(&db9->mutex); 540 return 0; 541 } 542 543 static void db9_close(struct input_dev *dev) 544 { 545 struct db9 *db9 = input_get_drvdata(dev); 546 struct parport *port = db9->pd->port; 547 548 mutex_lock(&db9->mutex); 549 if (!--db9->used) { 550 del_timer_sync(&db9->timer); 551 parport_write_control(port, 0x00); 552 parport_data_forward(port); 553 parport_release(db9->pd); 554 } 555 mutex_unlock(&db9->mutex); 556 } 557 558 static struct db9 __init *db9_probe(int parport, int mode) 559 { 560 struct db9 *db9; 561 const struct db9_mode_data *db9_mode; 562 struct parport *pp; 563 struct pardevice *pd; 564 struct input_dev *input_dev; 565 int i, j; 566 int err; 567 568 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 569 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 570 err = -EINVAL; 571 goto err_out; 572 } 573 574 db9_mode = &db9_modes[mode]; 575 576 pp = parport_find_number(parport); 577 if (!pp) { 578 printk(KERN_ERR "db9.c: no such parport\n"); 579 err = -ENODEV; 580 goto err_out; 581 } 582 583 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 584 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 585 err = -EINVAL; 586 goto err_put_pp; 587 } 588 589 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 590 if (!pd) { 591 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 592 err = -EBUSY; 593 goto err_put_pp; 594 } 595 596 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 597 if (!db9) { 598 printk(KERN_ERR "db9.c: Not enough memory\n"); 599 err = -ENOMEM; 600 goto err_unreg_pardev; 601 } 602 603 mutex_init(&db9->mutex); 604 db9->pd = pd; 605 db9->mode = mode; 606 init_timer(&db9->timer); 607 db9->timer.data = (long) db9; 608 db9->timer.function = db9_timer; 609 610 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 611 612 db9->dev[i] = input_dev = input_allocate_device(); 613 if (!input_dev) { 614 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 615 err = -ENOMEM; 616 goto err_unreg_devs; 617 } 618 619 snprintf(db9->phys[i], sizeof(db9->phys[i]), 620 "%s/input%d", db9->pd->port->name, i); 621 622 input_dev->name = db9_mode->name; 623 input_dev->phys = db9->phys[i]; 624 input_dev->id.bustype = BUS_PARPORT; 625 input_dev->id.vendor = 0x0002; 626 input_dev->id.product = mode; 627 input_dev->id.version = 0x0100; 628 629 input_set_drvdata(input_dev, db9); 630 631 input_dev->open = db9_open; 632 input_dev->close = db9_close; 633 634 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 635 for (j = 0; j < db9_mode->n_buttons; j++) 636 set_bit(db9_mode->buttons[j], input_dev->keybit); 637 for (j = 0; j < db9_mode->n_axis; j++) { 638 if (j < 2) 639 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 640 else 641 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 642 } 643 644 err = input_register_device(input_dev); 645 if (err) 646 goto err_free_dev; 647 } 648 649 parport_put_port(pp); 650 return db9; 651 652 err_free_dev: 653 input_free_device(db9->dev[i]); 654 err_unreg_devs: 655 while (--i >= 0) 656 input_unregister_device(db9->dev[i]); 657 kfree(db9); 658 err_unreg_pardev: 659 parport_unregister_device(pd); 660 err_put_pp: 661 parport_put_port(pp); 662 err_out: 663 return ERR_PTR(err); 664 } 665 666 static void db9_remove(struct db9 *db9) 667 { 668 int i; 669 670 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 671 input_unregister_device(db9->dev[i]); 672 parport_unregister_device(db9->pd); 673 kfree(db9); 674 } 675 676 static int __init db9_init(void) 677 { 678 int i; 679 int have_dev = 0; 680 int err = 0; 681 682 for (i = 0; i < DB9_MAX_PORTS; i++) { 683 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) 684 continue; 685 686 if (db9_cfg[i].nargs < 2) { 687 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 688 err = -EINVAL; 689 break; 690 } 691 692 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT], 693 db9_cfg[i].args[DB9_ARG_MODE]); 694 if (IS_ERR(db9_base[i])) { 695 err = PTR_ERR(db9_base[i]); 696 break; 697 } 698 699 have_dev = 1; 700 } 701 702 if (err) { 703 while (--i >= 0) 704 if (db9_base[i]) 705 db9_remove(db9_base[i]); 706 return err; 707 } 708 709 return have_dev ? 0 : -ENODEV; 710 } 711 712 static void __exit db9_exit(void) 713 { 714 int i; 715 716 for (i = 0; i < DB9_MAX_PORTS; i++) 717 if (db9_base[i]) 718 db9_remove(db9_base[i]); 719 } 720 721 module_init(db9_init); 722 module_exit(db9_exit); 723