1 /* 2 * Copyright (c) 1999-2001 Vojtech Pavlik 3 * 4 * Based on the work of: 5 * Andree Borrmann Mats Sjövall 6 */ 7 8 /* 9 * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux 10 */ 11 12 /* 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 26 * 27 * Should you need to contact me, the author, you can do so either by 28 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 30 */ 31 32 #include <linux/kernel.h> 33 #include <linux/module.h> 34 #include <linux/delay.h> 35 #include <linux/init.h> 36 #include <linux/parport.h> 37 #include <linux/input.h> 38 #include <linux/mutex.h> 39 40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 41 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 42 MODULE_LICENSE("GPL"); 43 44 struct db9_config { 45 int args[2]; 46 unsigned int nargs; 47 }; 48 49 #define DB9_MAX_PORTS 3 50 static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata; 51 52 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); 53 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 54 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); 55 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 56 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); 57 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 58 59 #define DB9_ARG_PARPORT 0 60 #define DB9_ARG_MODE 1 61 62 #define DB9_MULTI_STICK 0x01 63 #define DB9_MULTI2_STICK 0x02 64 #define DB9_GENESIS_PAD 0x03 65 #define DB9_GENESIS5_PAD 0x05 66 #define DB9_GENESIS6_PAD 0x06 67 #define DB9_SATURN_PAD 0x07 68 #define DB9_MULTI_0802 0x08 69 #define DB9_MULTI_0802_2 0x09 70 #define DB9_CD32_PAD 0x0A 71 #define DB9_SATURN_DPP 0x0B 72 #define DB9_SATURN_DPP_2 0x0C 73 #define DB9_MAX_PAD 0x0D 74 75 #define DB9_UP 0x01 76 #define DB9_DOWN 0x02 77 #define DB9_LEFT 0x04 78 #define DB9_RIGHT 0x08 79 #define DB9_FIRE1 0x10 80 #define DB9_FIRE2 0x20 81 #define DB9_FIRE3 0x40 82 #define DB9_FIRE4 0x80 83 84 #define DB9_NORMAL 0x0a 85 #define DB9_NOSELECT 0x08 86 87 #define DB9_GENESIS6_DELAY 14 88 #define DB9_REFRESH_TIME HZ/100 89 90 #define DB9_MAX_DEVICES 2 91 92 struct db9_mode_data { 93 const char *name; 94 const short *buttons; 95 int n_buttons; 96 int n_pads; 97 int n_axis; 98 int bidirectional; 99 int reverse; 100 }; 101 102 struct db9 { 103 struct input_dev *dev[DB9_MAX_DEVICES]; 104 struct timer_list timer; 105 struct pardevice *pd; 106 int mode; 107 int used; 108 struct mutex mutex; 109 char phys[DB9_MAX_DEVICES][32]; 110 }; 111 112 static struct db9 *db9_base[3]; 113 114 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 115 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 116 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 117 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 }; 118 119 static const struct db9_mode_data db9_modes[] = { 120 { NULL, NULL, 0, 0, 0, 0, 0 }, 121 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 122 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 123 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 124 { NULL, NULL, 0, 0, 0, 0, 0 }, 125 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 126 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 127 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 128 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 129 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 130 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 131 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 132 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 133 }; 134 135 /* 136 * Saturn controllers 137 */ 138 #define DB9_SATURN_DELAY 300 139 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 140 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 141 142 /* 143 * db9_saturn_write_sub() writes 2 bit data. 144 */ 145 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 146 { 147 unsigned char c; 148 149 switch (type) { 150 case 1: /* DPP1 */ 151 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 152 parport_write_data(port, c); 153 break; 154 case 2: /* DPP2 */ 155 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 156 parport_write_data(port, c); 157 break; 158 case 0: /* DB9 */ 159 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 160 parport_write_control(port, c); 161 break; 162 } 163 } 164 165 /* 166 * gc_saturn_read_sub() reads 4 bit data. 167 */ 168 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 169 { 170 unsigned char data; 171 172 if (type) { 173 /* DPP */ 174 data = parport_read_status(port) ^ 0x80; 175 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 176 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 177 } else { 178 /* DB9 */ 179 data = parport_read_data(port) & 0x0f; 180 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 181 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 182 } 183 } 184 185 /* 186 * db9_saturn_read_analog() sends clock and reads 8 bit data. 187 */ 188 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 189 { 190 unsigned char data; 191 192 db9_saturn_write_sub(port, type, 0, powered, 0); 193 udelay(DB9_SATURN_DELAY); 194 data = db9_saturn_read_sub(port, type) << 4; 195 db9_saturn_write_sub(port, type, 2, powered, 0); 196 udelay(DB9_SATURN_DELAY); 197 data |= db9_saturn_read_sub(port, type); 198 return data; 199 } 200 201 /* 202 * db9_saturn_read_packet() reads whole saturn packet at connector 203 * and returns device identifier code. 204 */ 205 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 206 { 207 int i, j; 208 unsigned char tmp; 209 210 db9_saturn_write_sub(port, type, 3, powered, 0); 211 data[0] = db9_saturn_read_sub(port, type); 212 switch (data[0] & 0x0f) { 213 case 0xf: 214 /* 1111 no pad */ 215 return data[0] = 0xff; 216 case 0x4: case 0x4 | 0x8: 217 /* ?100 : digital controller */ 218 db9_saturn_write_sub(port, type, 0, powered, 1); 219 data[2] = db9_saturn_read_sub(port, type) << 4; 220 db9_saturn_write_sub(port, type, 2, powered, 1); 221 data[1] = db9_saturn_read_sub(port, type) << 4; 222 db9_saturn_write_sub(port, type, 1, powered, 1); 223 data[1] |= db9_saturn_read_sub(port, type); 224 db9_saturn_write_sub(port, type, 3, powered, 1); 225 /* data[2] |= db9_saturn_read_sub(port, type); */ 226 data[2] |= data[0]; 227 return data[0] = 0x02; 228 case 0x1: 229 /* 0001 : analog controller or multitap */ 230 db9_saturn_write_sub(port, type, 2, powered, 0); 231 udelay(DB9_SATURN_DELAY); 232 data[0] = db9_saturn_read_analog(port, type, powered); 233 if (data[0] != 0x41) { 234 /* read analog controller */ 235 for (i = 0; i < (data[0] & 0x0f); i++) 236 data[i + 1] = db9_saturn_read_analog(port, type, powered); 237 db9_saturn_write_sub(port, type, 3, powered, 0); 238 return data[0]; 239 } else { 240 /* read multitap */ 241 if (db9_saturn_read_analog(port, type, powered) != 0x60) 242 return data[0] = 0xff; 243 for (i = 0; i < 60; i += 10) { 244 data[i] = db9_saturn_read_analog(port, type, powered); 245 if (data[i] != 0xff) 246 /* read each pad */ 247 for (j = 0; j < (data[i] & 0x0f); j++) 248 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 249 } 250 db9_saturn_write_sub(port, type, 3, powered, 0); 251 return 0x41; 252 } 253 case 0x0: 254 /* 0000 : mouse */ 255 db9_saturn_write_sub(port, type, 2, powered, 0); 256 udelay(DB9_SATURN_DELAY); 257 tmp = db9_saturn_read_analog(port, type, powered); 258 if (tmp == 0xff) { 259 for (i = 0; i < 3; i++) 260 data[i + 1] = db9_saturn_read_analog(port, type, powered); 261 db9_saturn_write_sub(port, type, 3, powered, 0); 262 return data[0] = 0xe3; 263 } 264 default: 265 return data[0]; 266 } 267 } 268 269 /* 270 * db9_saturn_report() analyzes packet and reports. 271 */ 272 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 273 { 274 struct input_dev *dev; 275 int tmp, i, j; 276 277 tmp = (id == 0x41) ? 60 : 10; 278 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 279 dev = devs[n]; 280 switch (data[j]) { 281 case 0x16: /* multi controller (analog 4 axis) */ 282 input_report_abs(dev, db9_abs[5], data[j + 6]); 283 case 0x15: /* mission stick (analog 3 axis) */ 284 input_report_abs(dev, db9_abs[3], data[j + 4]); 285 input_report_abs(dev, db9_abs[4], data[j + 5]); 286 case 0x13: /* racing controller (analog 1 axis) */ 287 input_report_abs(dev, db9_abs[2], data[j + 3]); 288 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 289 case 0x02: /* digital pad (digital 2 axis + buttons) */ 290 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 291 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 292 for (i = 0; i < 9; i++) 293 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 294 break; 295 case 0x19: /* mission stick x2 (analog 6 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 input_report_abs(dev, db9_abs[2], data[j + 3]); 301 input_report_abs(dev, db9_abs[3], data[j + 4]); 302 input_report_abs(dev, db9_abs[4], data[j + 5]); 303 /* 304 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 305 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 306 */ 307 input_report_abs(dev, db9_abs[6], data[j + 7]); 308 input_report_abs(dev, db9_abs[7], data[j + 8]); 309 input_report_abs(dev, db9_abs[5], data[j + 9]); 310 break; 311 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 312 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 313 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 314 break; 315 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 316 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 317 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 318 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 319 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 320 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 321 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 322 break; 323 case 0xff: 324 default: /* no pad */ 325 input_report_abs(dev, db9_abs[0], 0); 326 input_report_abs(dev, db9_abs[1], 0); 327 for (i = 0; i < 9; i++) 328 input_report_key(dev, db9_cd32_btn[i], 0); 329 break; 330 } 331 } 332 return n; 333 } 334 335 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 336 { 337 unsigned char id, data[60]; 338 int type, n, max_pads; 339 int tmp, i; 340 341 switch (mode) { 342 case DB9_SATURN_PAD: 343 type = 0; 344 n = 1; 345 break; 346 case DB9_SATURN_DPP: 347 type = 1; 348 n = 1; 349 break; 350 case DB9_SATURN_DPP_2: 351 type = 1; 352 n = 2; 353 break; 354 default: 355 return -1; 356 } 357 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 358 for (tmp = 0, i = 0; i < n; i++) { 359 id = db9_saturn_read_packet(port, data, type + i, 1); 360 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 361 } 362 return 0; 363 } 364 365 static void db9_timer(unsigned long private) 366 { 367 struct db9 *db9 = (void *) private; 368 struct parport *port = db9->pd->port; 369 struct input_dev *dev = db9->dev[0]; 370 struct input_dev *dev2 = db9->dev[1]; 371 int data, i; 372 373 switch (db9->mode) { 374 case DB9_MULTI_0802_2: 375 376 data = parport_read_data(port) >> 3; 377 378 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 379 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 380 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 381 382 case DB9_MULTI_0802: 383 384 data = parport_read_status(port) >> 3; 385 386 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 387 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 388 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 389 break; 390 391 case DB9_MULTI_STICK: 392 393 data = parport_read_data(port); 394 395 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 396 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 397 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 398 break; 399 400 case DB9_MULTI2_STICK: 401 402 data = parport_read_data(port); 403 404 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 405 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 406 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 407 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 408 break; 409 410 case DB9_GENESIS_PAD: 411 412 parport_write_control(port, DB9_NOSELECT); 413 data = parport_read_data(port); 414 415 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 416 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 417 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 418 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 419 420 parport_write_control(port, DB9_NORMAL); 421 data = parport_read_data(port); 422 423 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 424 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 425 break; 426 427 case DB9_GENESIS5_PAD: 428 429 parport_write_control(port, DB9_NOSELECT); 430 data = parport_read_data(port); 431 432 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 433 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 434 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 435 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 436 437 parport_write_control(port, DB9_NORMAL); 438 data = parport_read_data(port); 439 440 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 441 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 442 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 443 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 444 break; 445 446 case DB9_GENESIS6_PAD: 447 448 parport_write_control(port, DB9_NOSELECT); /* 1 */ 449 udelay(DB9_GENESIS6_DELAY); 450 data = parport_read_data(port); 451 452 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 453 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 454 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 455 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 456 457 parport_write_control(port, DB9_NORMAL); 458 udelay(DB9_GENESIS6_DELAY); 459 data = parport_read_data(port); 460 461 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 462 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 463 464 parport_write_control(port, DB9_NOSELECT); /* 2 */ 465 udelay(DB9_GENESIS6_DELAY); 466 parport_write_control(port, DB9_NORMAL); 467 udelay(DB9_GENESIS6_DELAY); 468 parport_write_control(port, DB9_NOSELECT); /* 3 */ 469 udelay(DB9_GENESIS6_DELAY); 470 data=parport_read_data(port); 471 472 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 473 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 474 input_report_key(dev, BTN_Z, ~data & DB9_UP); 475 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 476 477 parport_write_control(port, DB9_NORMAL); 478 udelay(DB9_GENESIS6_DELAY); 479 parport_write_control(port, DB9_NOSELECT); /* 4 */ 480 udelay(DB9_GENESIS6_DELAY); 481 parport_write_control(port, DB9_NORMAL); 482 break; 483 484 case DB9_SATURN_PAD: 485 case DB9_SATURN_DPP: 486 case DB9_SATURN_DPP_2: 487 488 db9_saturn(db9->mode, port, db9->dev); 489 break; 490 491 case DB9_CD32_PAD: 492 493 data = parport_read_data(port); 494 495 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 496 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 497 498 parport_write_control(port, 0x0a); 499 500 for (i = 0; i < 7; i++) { 501 data = parport_read_data(port); 502 parport_write_control(port, 0x02); 503 parport_write_control(port, 0x0a); 504 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 505 } 506 507 parport_write_control(port, 0x00); 508 break; 509 } 510 511 input_sync(dev); 512 513 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 514 } 515 516 static int db9_open(struct input_dev *dev) 517 { 518 struct db9 *db9 = input_get_drvdata(dev); 519 struct parport *port = db9->pd->port; 520 int err; 521 522 err = mutex_lock_interruptible(&db9->mutex); 523 if (err) 524 return err; 525 526 if (!db9->used++) { 527 parport_claim(db9->pd); 528 parport_write_data(port, 0xff); 529 if (db9_modes[db9->mode].reverse) { 530 parport_data_reverse(port); 531 parport_write_control(port, DB9_NORMAL); 532 } 533 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 534 } 535 536 mutex_unlock(&db9->mutex); 537 return 0; 538 } 539 540 static void db9_close(struct input_dev *dev) 541 { 542 struct db9 *db9 = input_get_drvdata(dev); 543 struct parport *port = db9->pd->port; 544 545 mutex_lock(&db9->mutex); 546 if (!--db9->used) { 547 del_timer_sync(&db9->timer); 548 parport_write_control(port, 0x00); 549 parport_data_forward(port); 550 parport_release(db9->pd); 551 } 552 mutex_unlock(&db9->mutex); 553 } 554 555 static struct db9 __init *db9_probe(int parport, int mode) 556 { 557 struct db9 *db9; 558 const struct db9_mode_data *db9_mode; 559 struct parport *pp; 560 struct pardevice *pd; 561 struct input_dev *input_dev; 562 int i, j; 563 int err; 564 565 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 566 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 567 err = -EINVAL; 568 goto err_out; 569 } 570 571 db9_mode = &db9_modes[mode]; 572 573 pp = parport_find_number(parport); 574 if (!pp) { 575 printk(KERN_ERR "db9.c: no such parport\n"); 576 err = -ENODEV; 577 goto err_out; 578 } 579 580 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 581 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 582 err = -EINVAL; 583 goto err_put_pp; 584 } 585 586 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 587 if (!pd) { 588 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 589 err = -EBUSY; 590 goto err_put_pp; 591 } 592 593 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 594 if (!db9) { 595 printk(KERN_ERR "db9.c: Not enough memory\n"); 596 err = -ENOMEM; 597 goto err_unreg_pardev; 598 } 599 600 mutex_init(&db9->mutex); 601 db9->pd = pd; 602 db9->mode = mode; 603 init_timer(&db9->timer); 604 db9->timer.data = (long) db9; 605 db9->timer.function = db9_timer; 606 607 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 608 609 db9->dev[i] = input_dev = input_allocate_device(); 610 if (!input_dev) { 611 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 612 err = -ENOMEM; 613 goto err_unreg_devs; 614 } 615 616 snprintf(db9->phys[i], sizeof(db9->phys[i]), 617 "%s/input%d", db9->pd->port->name, i); 618 619 input_dev->name = db9_mode->name; 620 input_dev->phys = db9->phys[i]; 621 input_dev->id.bustype = BUS_PARPORT; 622 input_dev->id.vendor = 0x0002; 623 input_dev->id.product = mode; 624 input_dev->id.version = 0x0100; 625 626 input_set_drvdata(input_dev, db9); 627 628 input_dev->open = db9_open; 629 input_dev->close = db9_close; 630 631 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 632 for (j = 0; j < db9_mode->n_buttons; j++) 633 set_bit(db9_mode->buttons[j], input_dev->keybit); 634 for (j = 0; j < db9_mode->n_axis; j++) { 635 if (j < 2) 636 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 637 else 638 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 639 } 640 641 err = input_register_device(input_dev); 642 if (err) 643 goto err_free_dev; 644 } 645 646 parport_put_port(pp); 647 return db9; 648 649 err_free_dev: 650 input_free_device(db9->dev[i]); 651 err_unreg_devs: 652 while (--i >= 0) 653 input_unregister_device(db9->dev[i]); 654 kfree(db9); 655 err_unreg_pardev: 656 parport_unregister_device(pd); 657 err_put_pp: 658 parport_put_port(pp); 659 err_out: 660 return ERR_PTR(err); 661 } 662 663 static void db9_remove(struct db9 *db9) 664 { 665 int i; 666 667 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 668 input_unregister_device(db9->dev[i]); 669 parport_unregister_device(db9->pd); 670 kfree(db9); 671 } 672 673 static int __init db9_init(void) 674 { 675 int i; 676 int have_dev = 0; 677 int err = 0; 678 679 for (i = 0; i < DB9_MAX_PORTS; i++) { 680 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) 681 continue; 682 683 if (db9_cfg[i].nargs < 2) { 684 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 685 err = -EINVAL; 686 break; 687 } 688 689 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT], 690 db9_cfg[i].args[DB9_ARG_MODE]); 691 if (IS_ERR(db9_base[i])) { 692 err = PTR_ERR(db9_base[i]); 693 break; 694 } 695 696 have_dev = 1; 697 } 698 699 if (err) { 700 while (--i >= 0) 701 if (db9_base[i]) 702 db9_remove(db9_base[i]); 703 return err; 704 } 705 706 return have_dev ? 0 : -ENODEV; 707 } 708 709 static void __exit db9_exit(void) 710 { 711 int i; 712 713 for (i = 0; i < DB9_MAX_PORTS; i++) 714 if (db9_base[i]) 715 db9_remove(db9_base[i]); 716 } 717 718 module_init(db9_init); 719 module_exit(db9_exit); 720