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 static int db9[] __initdata = { -1, 0 }; 47 static int db9_nargs __initdata = 0; 48 module_param_array_named(dev, db9, int, &db9_nargs, 0); 49 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 50 51 static int db9_2[] __initdata = { -1, 0 }; 52 static int db9_nargs_2 __initdata = 0; 53 module_param_array_named(dev2, db9_2, int, &db9_nargs_2, 0); 54 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 55 56 static int db9_3[] __initdata = { -1, 0 }; 57 static int db9_nargs_3 __initdata = 0; 58 module_param_array_named(dev3, db9_3, int, &db9_nargs_3, 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_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_MAX_DEVICES 2 91 92 #define DB9_GENESIS6_DELAY 14 93 #define DB9_REFRESH_TIME HZ/100 94 95 struct db9 { 96 struct input_dev dev[DB9_MAX_DEVICES]; 97 struct timer_list timer; 98 struct pardevice *pd; 99 int mode; 100 int used; 101 struct semaphore sem; 102 char phys[2][32]; 103 }; 104 105 static struct db9 *db9_base[3]; 106 107 static short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 108 static short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 109 static short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 110 111 static char db9_buttons[DB9_MAX_PAD] = { 0, 1, 2, 4, 0, 6, 8, 9, 1, 1, 7, 9, 9 }; 112 static short *db9_btn[DB9_MAX_PAD] = { NULL, db9_multi_btn, db9_multi_btn, db9_genesis_btn, NULL, db9_genesis_btn, 113 db9_genesis_btn, db9_cd32_btn, db9_multi_btn, db9_multi_btn, db9_cd32_btn, 114 db9_cd32_btn, db9_cd32_btn }; 115 static char *db9_name[DB9_MAX_PAD] = { NULL, "Multisystem joystick", "Multisystem joystick (2 fire)", "Genesis pad", 116 NULL, "Genesis 5 pad", "Genesis 6 pad", "Saturn pad", "Multisystem (0.8.0.2) joystick", 117 "Multisystem (0.8.0.2-dual) joystick", "Amiga CD-32 pad", "Saturn dpp", "Saturn dpp dual" }; 118 119 static const int db9_max_pads[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 6, 1, 2, 1, 6, 12 }; 120 static const int db9_num_axis[DB9_MAX_PAD] = { 0, 2, 2, 2, 0, 2, 2, 7, 2, 2, 2 ,7, 7 }; 121 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 }; 122 static const int db9_bidirectional[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0 }; 123 static const int db9_reverse[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0 }; 124 125 /* 126 * Saturn controllers 127 */ 128 #define DB9_SATURN_DELAY 300 129 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 130 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 131 132 /* 133 * db9_saturn_write_sub() writes 2 bit data. 134 */ 135 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 136 { 137 unsigned char c; 138 139 switch (type) { 140 case 1: /* DPP1 */ 141 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 142 parport_write_data(port, c); 143 break; 144 case 2: /* DPP2 */ 145 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 146 parport_write_data(port, c); 147 break; 148 case 0: /* DB9 */ 149 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 150 parport_write_control(port, c); 151 break; 152 } 153 } 154 155 /* 156 * gc_saturn_read_sub() reads 4 bit data. 157 */ 158 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 159 { 160 unsigned char data; 161 162 if (type) { 163 /* DPP */ 164 data = parport_read_status(port) ^ 0x80; 165 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 166 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 167 } else { 168 /* DB9 */ 169 data = parport_read_data(port) & 0x0f; 170 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 171 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 172 } 173 } 174 175 /* 176 * db9_saturn_read_analog() sends clock and reads 8 bit data. 177 */ 178 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 179 { 180 unsigned char data; 181 182 db9_saturn_write_sub(port, type, 0, powered, 0); 183 udelay(DB9_SATURN_DELAY); 184 data = db9_saturn_read_sub(port, type) << 4; 185 db9_saturn_write_sub(port, type, 2, powered, 0); 186 udelay(DB9_SATURN_DELAY); 187 data |= db9_saturn_read_sub(port, type); 188 return data; 189 } 190 191 /* 192 * db9_saturn_read_packet() reads whole saturn packet at connector 193 * and returns device identifier code. 194 */ 195 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 196 { 197 int i, j; 198 unsigned char tmp; 199 200 db9_saturn_write_sub(port, type, 3, powered, 0); 201 data[0] = db9_saturn_read_sub(port, type); 202 switch (data[0] & 0x0f) { 203 case 0xf: 204 /* 1111 no pad */ 205 return data[0] = 0xff; 206 case 0x4: case 0x4 | 0x8: 207 /* ?100 : digital controller */ 208 db9_saturn_write_sub(port, type, 0, powered, 1); 209 data[2] = db9_saturn_read_sub(port, type) << 4; 210 db9_saturn_write_sub(port, type, 2, powered, 1); 211 data[1] = db9_saturn_read_sub(port, type) << 4; 212 db9_saturn_write_sub(port, type, 1, powered, 1); 213 data[1] |= db9_saturn_read_sub(port, type); 214 db9_saturn_write_sub(port, type, 3, powered, 1); 215 /* data[2] |= db9_saturn_read_sub(port, type); */ 216 data[2] |= data[0]; 217 return data[0] = 0x02; 218 case 0x1: 219 /* 0001 : analog controller or multitap */ 220 db9_saturn_write_sub(port, type, 2, powered, 0); 221 udelay(DB9_SATURN_DELAY); 222 data[0] = db9_saturn_read_analog(port, type, powered); 223 if (data[0] != 0x41) { 224 /* read analog controller */ 225 for (i = 0; i < (data[0] & 0x0f); i++) 226 data[i + 1] = db9_saturn_read_analog(port, type, powered); 227 db9_saturn_write_sub(port, type, 3, powered, 0); 228 return data[0]; 229 } else { 230 /* read multitap */ 231 if (db9_saturn_read_analog(port, type, powered) != 0x60) 232 return data[0] = 0xff; 233 for (i = 0; i < 60; i += 10) { 234 data[i] = db9_saturn_read_analog(port, type, powered); 235 if (data[i] != 0xff) 236 /* read each pad */ 237 for (j = 0; j < (data[i] & 0x0f); j++) 238 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 239 } 240 db9_saturn_write_sub(port, type, 3, powered, 0); 241 return 0x41; 242 } 243 case 0x0: 244 /* 0000 : mouse */ 245 db9_saturn_write_sub(port, type, 2, powered, 0); 246 udelay(DB9_SATURN_DELAY); 247 tmp = db9_saturn_read_analog(port, type, powered); 248 if (tmp == 0xff) { 249 for (i = 0; i < 3; i++) 250 data[i + 1] = db9_saturn_read_analog(port, type, powered); 251 db9_saturn_write_sub(port, type, 3, powered, 0); 252 return data[0] = 0xe3; 253 } 254 default: 255 return data[0]; 256 } 257 } 258 259 /* 260 * db9_saturn_report() analyzes packet and reports. 261 */ 262 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *dev, int n, int max_pads) 263 { 264 int tmp, i, j; 265 266 tmp = (id == 0x41) ? 60 : 10; 267 for (j = 0; (j < tmp) && (n < max_pads); j += 10, n++) { 268 switch (data[j]) { 269 case 0x16: /* multi controller (analog 4 axis) */ 270 input_report_abs(dev + n, db9_abs[5], data[j + 6]); 271 case 0x15: /* mission stick (analog 3 axis) */ 272 input_report_abs(dev + n, db9_abs[3], data[j + 4]); 273 input_report_abs(dev + n, db9_abs[4], data[j + 5]); 274 case 0x13: /* racing controller (analog 1 axis) */ 275 input_report_abs(dev + n, db9_abs[2], data[j + 3]); 276 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 277 case 0x02: /* digital pad (digital 2 axis + buttons) */ 278 input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 279 input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 280 for (i = 0; i < 9; i++) 281 input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 282 break; 283 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 284 input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 285 input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 286 for (i = 0; i < 9; i++) 287 input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 288 input_report_abs(dev + n, db9_abs[2], data[j + 3]); 289 input_report_abs(dev + n, db9_abs[3], data[j + 4]); 290 input_report_abs(dev + n, db9_abs[4], data[j + 5]); 291 /* 292 input_report_abs(dev + n, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 293 input_report_abs(dev + n, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 294 */ 295 input_report_abs(dev + n, db9_abs[6], data[j + 7]); 296 input_report_abs(dev + n, db9_abs[7], data[j + 8]); 297 input_report_abs(dev + n, db9_abs[5], data[j + 9]); 298 break; 299 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 300 input_report_key(dev + n, BTN_A, data[j + 3] & 0x80); 301 input_report_abs(dev + n, db9_abs[2], data[j + 3] & 0x7f); 302 break; 303 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 304 input_report_key(dev + n, BTN_START, data[j + 1] & 0x08); 305 input_report_key(dev + n, BTN_A, data[j + 1] & 0x04); 306 input_report_key(dev + n, BTN_C, data[j + 1] & 0x02); 307 input_report_key(dev + n, BTN_B, data[j + 1] & 0x01); 308 input_report_abs(dev + n, db9_abs[2], data[j + 2] ^ 0x80); 309 input_report_abs(dev + n, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 310 break; 311 case 0xff: 312 default: /* no pad */ 313 input_report_abs(dev + n, db9_abs[0], 0); 314 input_report_abs(dev + n, db9_abs[1], 0); 315 for (i = 0; i < 9; i++) 316 input_report_key(dev + n, db9_cd32_btn[i], 0); 317 break; 318 } 319 } 320 return n; 321 } 322 323 static int db9_saturn(int mode, struct parport *port, struct input_dev *dev) 324 { 325 unsigned char id, data[60]; 326 int type, n, max_pads; 327 int tmp, i; 328 329 switch (mode) { 330 case DB9_SATURN_PAD: 331 type = 0; 332 n = 1; 333 break; 334 case DB9_SATURN_DPP: 335 type = 1; 336 n = 1; 337 break; 338 case DB9_SATURN_DPP_2: 339 type = 1; 340 n = 2; 341 break; 342 default: 343 return -1; 344 } 345 max_pads = min(db9_max_pads[mode], DB9_MAX_DEVICES); 346 for (tmp = 0, i = 0; i < n; i++) { 347 id = db9_saturn_read_packet(port, data, type + i, 1); 348 tmp = db9_saturn_report(id, data, dev, tmp, max_pads); 349 } 350 return 0; 351 } 352 353 static void db9_timer(unsigned long private) 354 { 355 struct db9 *db9 = (void *) private; 356 struct parport *port = db9->pd->port; 357 struct input_dev *dev = db9->dev; 358 int data, i; 359 360 switch(db9->mode) { 361 case DB9_MULTI_0802_2: 362 363 data = parport_read_data(port) >> 3; 364 365 input_report_abs(dev + 1, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 366 input_report_abs(dev + 1, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 367 input_report_key(dev + 1, BTN_TRIGGER, ~data & DB9_FIRE1); 368 369 case DB9_MULTI_0802: 370 371 data = parport_read_status(port) >> 3; 372 373 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 374 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 375 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 376 break; 377 378 case DB9_MULTI_STICK: 379 380 data = parport_read_data(port); 381 382 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 383 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 384 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 385 break; 386 387 case DB9_MULTI2_STICK: 388 389 data = parport_read_data(port); 390 391 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 392 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 393 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 394 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 395 break; 396 397 case DB9_GENESIS_PAD: 398 399 parport_write_control(port, DB9_NOSELECT); 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_B, ~data & DB9_FIRE1); 405 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 406 407 parport_write_control(port, DB9_NORMAL); 408 data=parport_read_data(port); 409 410 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 411 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 412 break; 413 414 case DB9_GENESIS5_PAD: 415 416 parport_write_control(port, DB9_NOSELECT); 417 data=parport_read_data(port); 418 419 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 420 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 421 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 422 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 423 424 parport_write_control(port, DB9_NORMAL); 425 data=parport_read_data(port); 426 427 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 428 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 429 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 430 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 431 break; 432 433 case DB9_GENESIS6_PAD: 434 435 parport_write_control(port, DB9_NOSELECT); /* 1 */ 436 udelay(DB9_GENESIS6_DELAY); 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 udelay(DB9_GENESIS6_DELAY); 446 data=parport_read_data(port); 447 448 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 449 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 450 451 parport_write_control(port, DB9_NOSELECT); /* 2 */ 452 udelay(DB9_GENESIS6_DELAY); 453 parport_write_control(port, DB9_NORMAL); 454 udelay(DB9_GENESIS6_DELAY); 455 parport_write_control(port, DB9_NOSELECT); /* 3 */ 456 udelay(DB9_GENESIS6_DELAY); 457 data=parport_read_data(port); 458 459 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 460 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 461 input_report_key(dev, BTN_Z, ~data & DB9_UP); 462 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 463 464 parport_write_control(port, DB9_NORMAL); 465 udelay(DB9_GENESIS6_DELAY); 466 parport_write_control(port, DB9_NOSELECT); /* 4 */ 467 udelay(DB9_GENESIS6_DELAY); 468 parport_write_control(port, DB9_NORMAL); 469 break; 470 471 case DB9_SATURN_PAD: 472 case DB9_SATURN_DPP: 473 case DB9_SATURN_DPP_2: 474 475 db9_saturn(db9->mode, port, dev); 476 break; 477 478 case DB9_CD32_PAD: 479 480 data=parport_read_data(port); 481 482 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 483 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 484 485 parport_write_control(port, 0x0a); 486 487 for (i = 0; i < 7; i++) { 488 data = parport_read_data(port); 489 parport_write_control(port, 0x02); 490 parport_write_control(port, 0x0a); 491 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 492 } 493 494 parport_write_control(port, 0x00); 495 break; 496 } 497 498 input_sync(dev); 499 500 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 501 } 502 503 static int db9_open(struct input_dev *dev) 504 { 505 struct db9 *db9 = dev->private; 506 struct parport *port = db9->pd->port; 507 int err; 508 509 err = down_interruptible(&db9->sem); 510 if (err) 511 return err; 512 513 if (!db9->used++) { 514 parport_claim(db9->pd); 515 parport_write_data(port, 0xff); 516 if (db9_reverse[db9->mode]) { 517 parport_data_reverse(port); 518 parport_write_control(port, DB9_NORMAL); 519 } 520 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 521 } 522 523 up(&db9->sem); 524 return 0; 525 } 526 527 static void db9_close(struct input_dev *dev) 528 { 529 struct db9 *db9 = dev->private; 530 struct parport *port = db9->pd->port; 531 532 down(&db9->sem); 533 if (!--db9->used) { 534 del_timer_sync(&db9->timer); 535 parport_write_control(port, 0x00); 536 parport_data_forward(port); 537 parport_release(db9->pd); 538 } 539 up(&db9->sem); 540 } 541 542 static struct db9 __init *db9_probe(int *config, int nargs) 543 { 544 struct db9 *db9; 545 struct parport *pp; 546 int i, j; 547 548 if (config[0] < 0) 549 return NULL; 550 551 if (nargs < 2) { 552 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 553 return NULL; 554 } 555 556 if (config[1] < 1 || config[1] >= DB9_MAX_PAD || !db9_buttons[config[1]]) { 557 printk(KERN_ERR "db9.c: bad config\n"); 558 return NULL; 559 } 560 561 pp = parport_find_number(config[0]); 562 if (!pp) { 563 printk(KERN_ERR "db9.c: no such parport\n"); 564 return NULL; 565 } 566 567 if (db9_bidirectional[config[1]]) { 568 if (!(pp->modes & PARPORT_MODE_TRISTATE)) { 569 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 570 parport_put_port(pp); 571 return NULL; 572 } 573 } 574 575 if (!(db9 = kcalloc(1, sizeof(struct db9), GFP_KERNEL))) { 576 parport_put_port(pp); 577 return NULL; 578 } 579 580 init_MUTEX(&db9->sem); 581 db9->mode = config[1]; 582 init_timer(&db9->timer); 583 db9->timer.data = (long) db9; 584 db9->timer.function = db9_timer; 585 586 db9->pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 587 parport_put_port(pp); 588 589 if (!db9->pd) { 590 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 591 kfree(db9); 592 return NULL; 593 } 594 595 for (i = 0; i < (min(db9_max_pads[db9->mode], DB9_MAX_DEVICES)); i++) { 596 597 sprintf(db9->phys[i], "%s/input%d", db9->pd->port->name, i); 598 599 db9->dev[i].private = db9; 600 db9->dev[i].open = db9_open; 601 db9->dev[i].close = db9_close; 602 603 db9->dev[i].name = db9_name[db9->mode]; 604 db9->dev[i].phys = db9->phys[i]; 605 db9->dev[i].id.bustype = BUS_PARPORT; 606 db9->dev[i].id.vendor = 0x0002; 607 db9->dev[i].id.product = config[1]; 608 db9->dev[i].id.version = 0x0100; 609 610 db9->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 611 for (j = 0; j < db9_buttons[db9->mode]; j++) 612 set_bit(db9_btn[db9->mode][j], db9->dev[i].keybit); 613 for (j = 0; j < db9_num_axis[db9->mode]; j++) { 614 set_bit(db9_abs[j], db9->dev[i].absbit); 615 if (j < 2) { 616 db9->dev[i].absmin[db9_abs[j]] = -1; 617 db9->dev[i].absmax[db9_abs[j]] = 1; 618 } else { 619 db9->dev[i].absmin[db9_abs[j]] = 1; 620 db9->dev[i].absmax[db9_abs[j]] = 255; 621 db9->dev[i].absflat[db9_abs[j]] = 0; 622 } 623 } 624 input_register_device(db9->dev + i); 625 printk(KERN_INFO "input: %s on %s\n", db9->dev[i].name, db9->pd->port->name); 626 } 627 628 return db9; 629 } 630 631 static int __init db9_init(void) 632 { 633 db9_base[0] = db9_probe(db9, db9_nargs); 634 db9_base[1] = db9_probe(db9_2, db9_nargs_2); 635 db9_base[2] = db9_probe(db9_3, db9_nargs_3); 636 637 if (db9_base[0] || db9_base[1] || db9_base[2]) 638 return 0; 639 640 return -ENODEV; 641 } 642 643 static void __exit db9_exit(void) 644 { 645 int i, j; 646 647 for (i = 0; i < 3; i++) 648 if (db9_base[i]) { 649 for (j = 0; j < min(db9_max_pads[db9_base[i]->mode], DB9_MAX_DEVICES); j++) 650 input_unregister_device(db9_base[i]->dev + j); 651 parport_unregister_device(db9_base[i]->pd); 652 } 653 } 654 655 module_init(db9_init); 656 module_exit(db9_exit); 657