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#include <linux/slab.h> 40 41MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 42MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 43MODULE_LICENSE("GPL"); 44 45struct db9_config { 46 int args[2]; 47 unsigned int nargs; 48}; 49 50#define DB9_MAX_PORTS 3 51static struct db9_config db9_cfg[DB9_MAX_PORTS] __initdata; 52 53module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); 54MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 55module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); 56MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 57module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); 58MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 59 60#define DB9_ARG_PARPORT 0 61#define DB9_ARG_MODE 1 62 63#define DB9_MULTI_STICK 0x01 64#define DB9_MULTI2_STICK 0x02 65#define DB9_GENESIS_PAD 0x03 66#define DB9_GENESIS5_PAD 0x05 67#define DB9_GENESIS6_PAD 0x06 68#define DB9_SATURN_PAD 0x07 69#define DB9_MULTI_0802 0x08 70#define DB9_MULTI_0802_2 0x09 71#define DB9_CD32_PAD 0x0A 72#define DB9_SATURN_DPP 0x0B 73#define DB9_SATURN_DPP_2 0x0C 74#define DB9_MAX_PAD 0x0D 75 76#define DB9_UP 0x01 77#define DB9_DOWN 0x02 78#define DB9_LEFT 0x04 79#define DB9_RIGHT 0x08 80#define DB9_FIRE1 0x10 81#define DB9_FIRE2 0x20 82#define DB9_FIRE3 0x40 83#define DB9_FIRE4 0x80 84 85#define DB9_NORMAL 0x0a 86#define DB9_NOSELECT 0x08 87 88#define DB9_GENESIS6_DELAY 14 89#define DB9_REFRESH_TIME HZ/100 90 91#define DB9_MAX_DEVICES 2 92 93struct db9_mode_data { 94 const char *name; 95 const short *buttons; 96 int n_buttons; 97 int n_pads; 98 int n_axis; 99 int bidirectional; 100 int reverse; 101}; 102 103struct db9 { 104 struct input_dev *dev[DB9_MAX_DEVICES]; 105 struct timer_list timer; 106 struct pardevice *pd; 107 int mode; 108 int used; 109 struct mutex mutex; 110 char phys[DB9_MAX_DEVICES][32]; 111}; 112 113static struct db9 *db9_base[3]; 114 115static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 116static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 117static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 118static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y }; 119 120static const struct db9_mode_data db9_modes[] = { 121 { NULL, NULL, 0, 0, 0, 0, 0 }, 122 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 123 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 124 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 125 { NULL, NULL, 0, 0, 0, 0, 0 }, 126 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 127 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 128 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 129 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 130 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 131 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 132 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 133 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 134}; 135 136/* 137 * Saturn controllers 138 */ 139#define DB9_SATURN_DELAY 300 140static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 141static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 142 143/* 144 * db9_saturn_write_sub() writes 2 bit data. 145 */ 146static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 147{ 148 unsigned char c; 149 150 switch (type) { 151 case 1: /* DPP1 */ 152 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 153 parport_write_data(port, c); 154 break; 155 case 2: /* DPP2 */ 156 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 157 parport_write_data(port, c); 158 break; 159 case 0: /* DB9 */ 160 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 161 parport_write_control(port, c); 162 break; 163 } 164} 165 166/* 167 * gc_saturn_read_sub() reads 4 bit data. 168 */ 169static unsigned char db9_saturn_read_sub(struct parport *port, int type) 170{ 171 unsigned char data; 172 173 if (type) { 174 /* DPP */ 175 data = parport_read_status(port) ^ 0x80; 176 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 177 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 178 } else { 179 /* DB9 */ 180 data = parport_read_data(port) & 0x0f; 181 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 182 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 183 } 184} 185 186/* 187 * db9_saturn_read_analog() sends clock and reads 8 bit data. 188 */ 189static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 190{ 191 unsigned char data; 192 193 db9_saturn_write_sub(port, type, 0, powered, 0); 194 udelay(DB9_SATURN_DELAY); 195 data = db9_saturn_read_sub(port, type) << 4; 196 db9_saturn_write_sub(port, type, 2, powered, 0); 197 udelay(DB9_SATURN_DELAY); 198 data |= db9_saturn_read_sub(port, type); 199 return data; 200} 201 202/* 203 * db9_saturn_read_packet() reads whole saturn packet at connector 204 * and returns device identifier code. 205 */ 206static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 207{ 208 int i, j; 209 unsigned char tmp; 210 211 db9_saturn_write_sub(port, type, 3, powered, 0); 212 data[0] = db9_saturn_read_sub(port, type); 213 switch (data[0] & 0x0f) { 214 case 0xf: 215 /* 1111 no pad */ 216 return data[0] = 0xff; 217 case 0x4: case 0x4 | 0x8: 218 /* ?100 : digital controller */ 219 db9_saturn_write_sub(port, type, 0, powered, 1); 220 data[2] = db9_saturn_read_sub(port, type) << 4; 221 db9_saturn_write_sub(port, type, 2, powered, 1); 222 data[1] = db9_saturn_read_sub(port, type) << 4; 223 db9_saturn_write_sub(port, type, 1, powered, 1); 224 data[1] |= db9_saturn_read_sub(port, type); 225 db9_saturn_write_sub(port, type, 3, powered, 1); 226 /* data[2] |= db9_saturn_read_sub(port, type); */ 227 data[2] |= data[0]; 228 return data[0] = 0x02; 229 case 0x1: 230 /* 0001 : analog controller or multitap */ 231 db9_saturn_write_sub(port, type, 2, powered, 0); 232 udelay(DB9_SATURN_DELAY); 233 data[0] = db9_saturn_read_analog(port, type, powered); 234 if (data[0] != 0x41) { 235 /* read analog controller */ 236 for (i = 0; i < (data[0] & 0x0f); i++) 237 data[i + 1] = db9_saturn_read_analog(port, type, powered); 238 db9_saturn_write_sub(port, type, 3, powered, 0); 239 return data[0]; 240 } else { 241 /* read multitap */ 242 if (db9_saturn_read_analog(port, type, powered) != 0x60) 243 return data[0] = 0xff; 244 for (i = 0; i < 60; i += 10) { 245 data[i] = db9_saturn_read_analog(port, type, powered); 246 if (data[i] != 0xff) 247 /* read each pad */ 248 for (j = 0; j < (data[i] & 0x0f); j++) 249 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 250 } 251 db9_saturn_write_sub(port, type, 3, powered, 0); 252 return 0x41; 253 } 254 case 0x0: 255 /* 0000 : mouse */ 256 db9_saturn_write_sub(port, type, 2, powered, 0); 257 udelay(DB9_SATURN_DELAY); 258 tmp = db9_saturn_read_analog(port, type, powered); 259 if (tmp == 0xff) { 260 for (i = 0; i < 3; i++) 261 data[i + 1] = db9_saturn_read_analog(port, type, powered); 262 db9_saturn_write_sub(port, type, 3, powered, 0); 263 return data[0] = 0xe3; 264 } 265 default: 266 return data[0]; 267 } 268} 269 270/* 271 * db9_saturn_report() analyzes packet and reports. 272 */ 273static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 274{ 275 struct input_dev *dev; 276 int tmp, i, j; 277 278 tmp = (id == 0x41) ? 60 : 10; 279 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 280 dev = devs[n]; 281 switch (data[j]) { 282 case 0x16: /* multi controller (analog 4 axis) */ 283 input_report_abs(dev, db9_abs[5], data[j + 6]); 284 case 0x15: /* mission stick (analog 3 axis) */ 285 input_report_abs(dev, db9_abs[3], data[j + 4]); 286 input_report_abs(dev, db9_abs[4], data[j + 5]); 287 case 0x13: /* racing controller (analog 1 axis) */ 288 input_report_abs(dev, db9_abs[2], data[j + 3]); 289 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 290 case 0x02: /* digital pad (digital 2 axis + buttons) */ 291 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 292 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 293 for (i = 0; i < 9; i++) 294 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 295 break; 296 case 0x19: /* mission stick x2 (analog 6 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 input_report_abs(dev, db9_abs[2], data[j + 3]); 302 input_report_abs(dev, db9_abs[3], data[j + 4]); 303 input_report_abs(dev, db9_abs[4], data[j + 5]); 304 /* 305 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 306 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 307 */ 308 input_report_abs(dev, db9_abs[6], data[j + 7]); 309 input_report_abs(dev, db9_abs[7], data[j + 8]); 310 input_report_abs(dev, db9_abs[5], data[j + 9]); 311 break; 312 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 313 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 314 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 315 break; 316 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 317 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 318 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 319 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 320 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 321 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 322 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 323 break; 324 case 0xff: 325 default: /* no pad */ 326 input_report_abs(dev, db9_abs[0], 0); 327 input_report_abs(dev, db9_abs[1], 0); 328 for (i = 0; i < 9; i++) 329 input_report_key(dev, db9_cd32_btn[i], 0); 330 break; 331 } 332 } 333 return n; 334} 335 336static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 337{ 338 unsigned char id, data[60]; 339 int type, n, max_pads; 340 int tmp, i; 341 342 switch (mode) { 343 case DB9_SATURN_PAD: 344 type = 0; 345 n = 1; 346 break; 347 case DB9_SATURN_DPP: 348 type = 1; 349 n = 1; 350 break; 351 case DB9_SATURN_DPP_2: 352 type = 1; 353 n = 2; 354 break; 355 default: 356 return -1; 357 } 358 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 359 for (tmp = 0, i = 0; i < n; i++) { 360 id = db9_saturn_read_packet(port, data, type + i, 1); 361 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 362 } 363 return 0; 364} 365 366static void db9_timer(unsigned long private) 367{ 368 struct db9 *db9 = (void *) private; 369 struct parport *port = db9->pd->port; 370 struct input_dev *dev = db9->dev[0]; 371 struct input_dev *dev2 = db9->dev[1]; 372 int data, i; 373 374 switch (db9->mode) { 375 case DB9_MULTI_0802_2: 376 377 data = parport_read_data(port) >> 3; 378 379 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 380 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 381 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 382 383 case DB9_MULTI_0802: 384 385 data = parport_read_status(port) >> 3; 386 387 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 388 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 389 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 390 break; 391 392 case DB9_MULTI_STICK: 393 394 data = parport_read_data(port); 395 396 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 397 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 398 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 399 break; 400 401 case DB9_MULTI2_STICK: 402 403 data = parport_read_data(port); 404 405 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 406 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 407 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 408 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 409 break; 410 411 case DB9_GENESIS_PAD: 412 413 parport_write_control(port, DB9_NOSELECT); 414 data = parport_read_data(port); 415 416 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 417 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 418 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 419 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 420 421 parport_write_control(port, DB9_NORMAL); 422 data = parport_read_data(port); 423 424 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 425 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 426 break; 427 428 case DB9_GENESIS5_PAD: 429 430 parport_write_control(port, DB9_NOSELECT); 431 data = parport_read_data(port); 432 433 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 434 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 435 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 436 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 437 438 parport_write_control(port, DB9_NORMAL); 439 data = parport_read_data(port); 440 441 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 442 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 443 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 444 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 445 break; 446 447 case DB9_GENESIS6_PAD: 448 449 parport_write_control(port, DB9_NOSELECT); /* 1 */ 450 udelay(DB9_GENESIS6_DELAY); 451 data = parport_read_data(port); 452 453 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 454 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 455 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 456 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 457 458 parport_write_control(port, DB9_NORMAL); 459 udelay(DB9_GENESIS6_DELAY); 460 data = parport_read_data(port); 461 462 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 463 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 464 465 parport_write_control(port, DB9_NOSELECT); /* 2 */ 466 udelay(DB9_GENESIS6_DELAY); 467 parport_write_control(port, DB9_NORMAL); 468 udelay(DB9_GENESIS6_DELAY); 469 parport_write_control(port, DB9_NOSELECT); /* 3 */ 470 udelay(DB9_GENESIS6_DELAY); 471 data=parport_read_data(port); 472 473 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 474 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 475 input_report_key(dev, BTN_Z, ~data & DB9_UP); 476 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 477 478 parport_write_control(port, DB9_NORMAL); 479 udelay(DB9_GENESIS6_DELAY); 480 parport_write_control(port, DB9_NOSELECT); /* 4 */ 481 udelay(DB9_GENESIS6_DELAY); 482 parport_write_control(port, DB9_NORMAL); 483 break; 484 485 case DB9_SATURN_PAD: 486 case DB9_SATURN_DPP: 487 case DB9_SATURN_DPP_2: 488 489 db9_saturn(db9->mode, port, db9->dev); 490 break; 491 492 case DB9_CD32_PAD: 493 494 data = parport_read_data(port); 495 496 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 497 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 498 499 parport_write_control(port, 0x0a); 500 501 for (i = 0; i < 7; i++) { 502 data = parport_read_data(port); 503 parport_write_control(port, 0x02); 504 parport_write_control(port, 0x0a); 505 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 506 } 507 508 parport_write_control(port, 0x00); 509 break; 510 } 511 512 input_sync(dev); 513 514 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 515} 516 517static int db9_open(struct input_dev *dev) 518{ 519 struct db9 *db9 = input_get_drvdata(dev); 520 struct parport *port = db9->pd->port; 521 int err; 522 523 err = mutex_lock_interruptible(&db9->mutex); 524 if (err) 525 return err; 526 527 if (!db9->used++) { 528 parport_claim(db9->pd); 529 parport_write_data(port, 0xff); 530 if (db9_modes[db9->mode].reverse) { 531 parport_data_reverse(port); 532 parport_write_control(port, DB9_NORMAL); 533 } 534 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 535 } 536 537 mutex_unlock(&db9->mutex); 538 return 0; 539} 540 541static void db9_close(struct input_dev *dev) 542{ 543 struct db9 *db9 = input_get_drvdata(dev); 544 struct parport *port = db9->pd->port; 545 546 mutex_lock(&db9->mutex); 547 if (!--db9->used) { 548 del_timer_sync(&db9->timer); 549 parport_write_control(port, 0x00); 550 parport_data_forward(port); 551 parport_release(db9->pd); 552 } 553 mutex_unlock(&db9->mutex); 554} 555 556static struct db9 __init *db9_probe(int parport, int mode) 557{ 558 struct db9 *db9; 559 const struct db9_mode_data *db9_mode; 560 struct parport *pp; 561 struct pardevice *pd; 562 struct input_dev *input_dev; 563 int i, j; 564 int err; 565 566 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 567 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 568 err = -EINVAL; 569 goto err_out; 570 } 571 572 db9_mode = &db9_modes[mode]; 573 574 pp = parport_find_number(parport); 575 if (!pp) { 576 printk(KERN_ERR "db9.c: no such parport\n"); 577 err = -ENODEV; 578 goto err_out; 579 } 580 581 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 582 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 583 err = -EINVAL; 584 goto err_put_pp; 585 } 586 587 pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); 588 if (!pd) { 589 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 590 err = -EBUSY; 591 goto err_put_pp; 592 } 593 594 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 595 if (!db9) { 596 printk(KERN_ERR "db9.c: Not enough memory\n"); 597 err = -ENOMEM; 598 goto err_unreg_pardev; 599 } 600 601 mutex_init(&db9->mutex); 602 db9->pd = pd; 603 db9->mode = mode; 604 init_timer(&db9->timer); 605 db9->timer.data = (long) db9; 606 db9->timer.function = db9_timer; 607 608 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 609 610 db9->dev[i] = input_dev = input_allocate_device(); 611 if (!input_dev) { 612 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 613 err = -ENOMEM; 614 goto err_unreg_devs; 615 } 616 617 snprintf(db9->phys[i], sizeof(db9->phys[i]), 618 "%s/input%d", db9->pd->port->name, i); 619 620 input_dev->name = db9_mode->name; 621 input_dev->phys = db9->phys[i]; 622 input_dev->id.bustype = BUS_PARPORT; 623 input_dev->id.vendor = 0x0002; 624 input_dev->id.product = mode; 625 input_dev->id.version = 0x0100; 626 627 input_set_drvdata(input_dev, db9); 628 629 input_dev->open = db9_open; 630 input_dev->close = db9_close; 631 632 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 633 for (j = 0; j < db9_mode->n_buttons; j++) 634 set_bit(db9_mode->buttons[j], input_dev->keybit); 635 for (j = 0; j < db9_mode->n_axis; j++) { 636 if (j < 2) 637 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 638 else 639 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 640 } 641 642 err = input_register_device(input_dev); 643 if (err) 644 goto err_free_dev; 645 } 646 647 parport_put_port(pp); 648 return db9; 649 650 err_free_dev: 651 input_free_device(db9->dev[i]); 652 err_unreg_devs: 653 while (--i >= 0) 654 input_unregister_device(db9->dev[i]); 655 kfree(db9); 656 err_unreg_pardev: 657 parport_unregister_device(pd); 658 err_put_pp: 659 parport_put_port(pp); 660 err_out: 661 return ERR_PTR(err); 662} 663 664static void db9_remove(struct db9 *db9) 665{ 666 int i; 667 668 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 669 input_unregister_device(db9->dev[i]); 670 parport_unregister_device(db9->pd); 671 kfree(db9); 672} 673 674static int __init db9_init(void) 675{ 676 int i; 677 int have_dev = 0; 678 int err = 0; 679 680 for (i = 0; i < DB9_MAX_PORTS; i++) { 681 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) 682 continue; 683 684 if (db9_cfg[i].nargs < 2) { 685 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 686 err = -EINVAL; 687 break; 688 } 689 690 db9_base[i] = db9_probe(db9_cfg[i].args[DB9_ARG_PARPORT], 691 db9_cfg[i].args[DB9_ARG_MODE]); 692 if (IS_ERR(db9_base[i])) { 693 err = PTR_ERR(db9_base[i]); 694 break; 695 } 696 697 have_dev = 1; 698 } 699 700 if (err) { 701 while (--i >= 0) 702 if (db9_base[i]) 703 db9_remove(db9_base[i]); 704 return err; 705 } 706 707 return have_dev ? 0 : -ENODEV; 708} 709 710static void __exit db9_exit(void) 711{ 712 int i; 713 714 for (i = 0; i < DB9_MAX_PORTS; i++) 715 if (db9_base[i]) 716 db9_remove(db9_base[i]); 717} 718 719module_init(db9_init); 720module_exit(db9_exit); 721