1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Copyright (c) 1999-2001 Vojtech Pavlik 4 * 5 * Based on the work of: 6 * Andree Borrmann Mats Sjövall 7 */ 8 9/* 10 * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux 11 */ 12 13/* 14 */ 15 16#include <linux/kernel.h> 17#include <linux/module.h> 18#include <linux/delay.h> 19#include <linux/init.h> 20#include <linux/parport.h> 21#include <linux/input.h> 22#include <linux/mutex.h> 23#include <linux/slab.h> 24 25MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 26MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 27MODULE_LICENSE("GPL"); 28 29struct db9_config { 30 int args[2]; 31 unsigned int nargs; 32}; 33 34#define DB9_MAX_PORTS 3 35static struct db9_config db9_cfg[DB9_MAX_PORTS]; 36 37module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); 38MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 39module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); 40MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 41module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); 42MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 43 44#define DB9_ARG_PARPORT 0 45#define DB9_ARG_MODE 1 46 47#define DB9_MULTI_STICK 0x01 48#define DB9_MULTI2_STICK 0x02 49#define DB9_GENESIS_PAD 0x03 50#define DB9_GENESIS5_PAD 0x05 51#define DB9_GENESIS6_PAD 0x06 52#define DB9_SATURN_PAD 0x07 53#define DB9_MULTI_0802 0x08 54#define DB9_MULTI_0802_2 0x09 55#define DB9_CD32_PAD 0x0A 56#define DB9_SATURN_DPP 0x0B 57#define DB9_SATURN_DPP_2 0x0C 58#define DB9_MAX_PAD 0x0D 59 60#define DB9_UP 0x01 61#define DB9_DOWN 0x02 62#define DB9_LEFT 0x04 63#define DB9_RIGHT 0x08 64#define DB9_FIRE1 0x10 65#define DB9_FIRE2 0x20 66#define DB9_FIRE3 0x40 67#define DB9_FIRE4 0x80 68 69#define DB9_NORMAL 0x0a 70#define DB9_NOSELECT 0x08 71 72#define DB9_GENESIS6_DELAY 14 73#define DB9_REFRESH_TIME HZ/100 74 75#define DB9_MAX_DEVICES 2 76 77struct db9_mode_data { 78 const char *name; 79 const short *buttons; 80 int n_buttons; 81 int n_pads; 82 int n_axis; 83 int bidirectional; 84 int reverse; 85}; 86 87struct db9 { 88 struct input_dev *dev[DB9_MAX_DEVICES]; 89 struct timer_list timer; 90 struct pardevice *pd; 91 int mode; 92 int used; 93 int parportno; 94 struct mutex mutex; 95 char phys[DB9_MAX_DEVICES][32]; 96}; 97 98static struct db9 *db9_base[3]; 99 100static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 101static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 102static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 103static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y }; 104 105static const struct db9_mode_data db9_modes[] = { 106 { NULL, NULL, 0, 0, 0, 0, 0 }, 107 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 108 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 109 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 110 { NULL, NULL, 0, 0, 0, 0, 0 }, 111 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 112 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 113 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 114 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 115 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 116 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 117 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 118 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 119}; 120 121/* 122 * Saturn controllers 123 */ 124#define DB9_SATURN_DELAY 300 125static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 126static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 127 128/* 129 * db9_saturn_write_sub() writes 2 bit data. 130 */ 131static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 132{ 133 unsigned char c; 134 135 switch (type) { 136 case 1: /* DPP1 */ 137 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 138 parport_write_data(port, c); 139 break; 140 case 2: /* DPP2 */ 141 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 142 parport_write_data(port, c); 143 break; 144 case 0: /* DB9 */ 145 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 146 parport_write_control(port, c); 147 break; 148 } 149} 150 151/* 152 * gc_saturn_read_sub() reads 4 bit data. 153 */ 154static unsigned char db9_saturn_read_sub(struct parport *port, int type) 155{ 156 unsigned char data; 157 158 if (type) { 159 /* DPP */ 160 data = parport_read_status(port) ^ 0x80; 161 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 162 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 163 } else { 164 /* DB9 */ 165 data = parport_read_data(port) & 0x0f; 166 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 167 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 168 } 169} 170 171/* 172 * db9_saturn_read_analog() sends clock and reads 8 bit data. 173 */ 174static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 175{ 176 unsigned char data; 177 178 db9_saturn_write_sub(port, type, 0, powered, 0); 179 udelay(DB9_SATURN_DELAY); 180 data = db9_saturn_read_sub(port, type) << 4; 181 db9_saturn_write_sub(port, type, 2, powered, 0); 182 udelay(DB9_SATURN_DELAY); 183 data |= db9_saturn_read_sub(port, type); 184 return data; 185} 186 187/* 188 * db9_saturn_read_packet() reads whole saturn packet at connector 189 * and returns device identifier code. 190 */ 191static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 192{ 193 int i, j; 194 unsigned char tmp; 195 196 db9_saturn_write_sub(port, type, 3, powered, 0); 197 data[0] = db9_saturn_read_sub(port, type); 198 switch (data[0] & 0x0f) { 199 case 0xf: 200 /* 1111 no pad */ 201 return data[0] = 0xff; 202 case 0x4: case 0x4 | 0x8: 203 /* ?100 : digital controller */ 204 db9_saturn_write_sub(port, type, 0, powered, 1); 205 data[2] = db9_saturn_read_sub(port, type) << 4; 206 db9_saturn_write_sub(port, type, 2, powered, 1); 207 data[1] = db9_saturn_read_sub(port, type) << 4; 208 db9_saturn_write_sub(port, type, 1, powered, 1); 209 data[1] |= db9_saturn_read_sub(port, type); 210 db9_saturn_write_sub(port, type, 3, powered, 1); 211 /* data[2] |= db9_saturn_read_sub(port, type); */ 212 data[2] |= data[0]; 213 return data[0] = 0x02; 214 case 0x1: 215 /* 0001 : analog controller or multitap */ 216 db9_saturn_write_sub(port, type, 2, powered, 0); 217 udelay(DB9_SATURN_DELAY); 218 data[0] = db9_saturn_read_analog(port, type, powered); 219 if (data[0] != 0x41) { 220 /* read analog controller */ 221 for (i = 0; i < (data[0] & 0x0f); i++) 222 data[i + 1] = db9_saturn_read_analog(port, type, powered); 223 db9_saturn_write_sub(port, type, 3, powered, 0); 224 return data[0]; 225 } else { 226 /* read multitap */ 227 if (db9_saturn_read_analog(port, type, powered) != 0x60) 228 return data[0] = 0xff; 229 for (i = 0; i < 60; i += 10) { 230 data[i] = db9_saturn_read_analog(port, type, powered); 231 if (data[i] != 0xff) 232 /* read each pad */ 233 for (j = 0; j < (data[i] & 0x0f); j++) 234 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 235 } 236 db9_saturn_write_sub(port, type, 3, powered, 0); 237 return 0x41; 238 } 239 case 0x0: 240 /* 0000 : mouse */ 241 db9_saturn_write_sub(port, type, 2, powered, 0); 242 udelay(DB9_SATURN_DELAY); 243 tmp = db9_saturn_read_analog(port, type, powered); 244 if (tmp == 0xff) { 245 for (i = 0; i < 3; i++) 246 data[i + 1] = db9_saturn_read_analog(port, type, powered); 247 db9_saturn_write_sub(port, type, 3, powered, 0); 248 return data[0] = 0xe3; 249 } 250 fallthrough; 251 default: 252 return data[0]; 253 } 254} 255 256/* 257 * db9_saturn_report() analyzes packet and reports. 258 */ 259static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 260{ 261 struct input_dev *dev; 262 int tmp, i, j; 263 264 tmp = (id == 0x41) ? 60 : 10; 265 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 266 dev = devs[n]; 267 switch (data[j]) { 268 case 0x16: /* multi controller (analog 4 axis) */ 269 input_report_abs(dev, db9_abs[5], data[j + 6]); 270 fallthrough; 271 case 0x15: /* mission stick (analog 3 axis) */ 272 input_report_abs(dev, db9_abs[3], data[j + 4]); 273 input_report_abs(dev, db9_abs[4], data[j + 5]); 274 fallthrough; 275 case 0x13: /* racing controller (analog 1 axis) */ 276 input_report_abs(dev, db9_abs[2], data[j + 3]); 277 fallthrough; 278 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 279 case 0x02: /* digital pad (digital 2 axis + buttons) */ 280 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 281 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 282 for (i = 0; i < 9; i++) 283 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 284 break; 285 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 286 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 287 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 288 for (i = 0; i < 9; i++) 289 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 290 input_report_abs(dev, db9_abs[2], data[j + 3]); 291 input_report_abs(dev, db9_abs[3], data[j + 4]); 292 input_report_abs(dev, db9_abs[4], data[j + 5]); 293 /* 294 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 295 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 296 */ 297 input_report_abs(dev, db9_abs[6], data[j + 7]); 298 input_report_abs(dev, db9_abs[7], data[j + 8]); 299 input_report_abs(dev, db9_abs[5], data[j + 9]); 300 break; 301 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 302 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 303 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 304 break; 305 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 306 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 307 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 308 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 309 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 310 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 311 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 312 break; 313 case 0xff: 314 default: /* no pad */ 315 input_report_abs(dev, db9_abs[0], 0); 316 input_report_abs(dev, db9_abs[1], 0); 317 for (i = 0; i < 9; i++) 318 input_report_key(dev, db9_cd32_btn[i], 0); 319 break; 320 } 321 } 322 return n; 323} 324 325static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 326{ 327 unsigned char id, data[60]; 328 int type, n, max_pads; 329 int tmp, i; 330 331 switch (mode) { 332 case DB9_SATURN_PAD: 333 type = 0; 334 n = 1; 335 break; 336 case DB9_SATURN_DPP: 337 type = 1; 338 n = 1; 339 break; 340 case DB9_SATURN_DPP_2: 341 type = 1; 342 n = 2; 343 break; 344 default: 345 return -1; 346 } 347 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 348 for (tmp = 0, i = 0; i < n; i++) { 349 id = db9_saturn_read_packet(port, data, type + i, 1); 350 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 351 } 352 return 0; 353} 354 355static void db9_timer(struct timer_list *t) 356{ 357 struct db9 *db9 = from_timer(db9, t, timer); 358 struct parport *port = db9->pd->port; 359 struct input_dev *dev = db9->dev[0]; 360 struct input_dev *dev2 = db9->dev[1]; 361 int data, i; 362 363 switch (db9->mode) { 364 case DB9_MULTI_0802_2: 365 366 data = parport_read_data(port) >> 3; 367 368 input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 369 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 370 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 371 fallthrough; 372 373 case DB9_MULTI_0802: 374 375 data = parport_read_status(port) >> 3; 376 377 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 378 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 379 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 380 break; 381 382 case DB9_MULTI_STICK: 383 384 data = parport_read_data(port); 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_MULTI2_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 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 399 break; 400 401 case DB9_GENESIS_PAD: 402 403 parport_write_control(port, DB9_NOSELECT); 404 data = parport_read_data(port); 405 406 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 407 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 408 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 409 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 410 411 parport_write_control(port, DB9_NORMAL); 412 data = parport_read_data(port); 413 414 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 415 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 416 break; 417 418 case DB9_GENESIS5_PAD: 419 420 parport_write_control(port, DB9_NOSELECT); 421 data = parport_read_data(port); 422 423 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 424 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 425 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 426 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 427 428 parport_write_control(port, DB9_NORMAL); 429 data = parport_read_data(port); 430 431 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 432 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 433 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 434 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 435 break; 436 437 case DB9_GENESIS6_PAD: 438 439 parport_write_control(port, DB9_NOSELECT); /* 1 */ 440 udelay(DB9_GENESIS6_DELAY); 441 data = parport_read_data(port); 442 443 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 444 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 445 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 446 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 447 448 parport_write_control(port, DB9_NORMAL); 449 udelay(DB9_GENESIS6_DELAY); 450 data = parport_read_data(port); 451 452 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 453 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 454 455 parport_write_control(port, DB9_NOSELECT); /* 2 */ 456 udelay(DB9_GENESIS6_DELAY); 457 parport_write_control(port, DB9_NORMAL); 458 udelay(DB9_GENESIS6_DELAY); 459 parport_write_control(port, DB9_NOSELECT); /* 3 */ 460 udelay(DB9_GENESIS6_DELAY); 461 data=parport_read_data(port); 462 463 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 464 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 465 input_report_key(dev, BTN_Z, ~data & DB9_UP); 466 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 467 468 parport_write_control(port, DB9_NORMAL); 469 udelay(DB9_GENESIS6_DELAY); 470 parport_write_control(port, DB9_NOSELECT); /* 4 */ 471 udelay(DB9_GENESIS6_DELAY); 472 parport_write_control(port, DB9_NORMAL); 473 break; 474 475 case DB9_SATURN_PAD: 476 case DB9_SATURN_DPP: 477 case DB9_SATURN_DPP_2: 478 479 db9_saturn(db9->mode, port, db9->dev); 480 break; 481 482 case DB9_CD32_PAD: 483 484 data = parport_read_data(port); 485 486 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 487 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 488 489 parport_write_control(port, 0x0a); 490 491 for (i = 0; i < 7; i++) { 492 data = parport_read_data(port); 493 parport_write_control(port, 0x02); 494 parport_write_control(port, 0x0a); 495 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 496 } 497 498 parport_write_control(port, 0x00); 499 break; 500 } 501 502 input_sync(dev); 503 504 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 505} 506 507static int db9_open(struct input_dev *dev) 508{ 509 struct db9 *db9 = input_get_drvdata(dev); 510 struct parport *port = db9->pd->port; 511 int err; 512 513 err = mutex_lock_interruptible(&db9->mutex); 514 if (err) 515 return err; 516 517 if (!db9->used++) { 518 parport_claim(db9->pd); 519 parport_write_data(port, 0xff); 520 if (db9_modes[db9->mode].reverse) { 521 parport_data_reverse(port); 522 parport_write_control(port, DB9_NORMAL); 523 } 524 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 525 } 526 527 mutex_unlock(&db9->mutex); 528 return 0; 529} 530 531static void db9_close(struct input_dev *dev) 532{ 533 struct db9 *db9 = input_get_drvdata(dev); 534 struct parport *port = db9->pd->port; 535 536 mutex_lock(&db9->mutex); 537 if (!--db9->used) { 538 del_timer_sync(&db9->timer); 539 parport_write_control(port, 0x00); 540 parport_data_forward(port); 541 parport_release(db9->pd); 542 } 543 mutex_unlock(&db9->mutex); 544} 545 546static void db9_attach(struct parport *pp) 547{ 548 struct db9 *db9; 549 const struct db9_mode_data *db9_mode; 550 struct pardevice *pd; 551 struct input_dev *input_dev; 552 int i, j, port_idx; 553 int mode; 554 struct pardev_cb db9_parport_cb; 555 556 for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) { 557 if (db9_cfg[port_idx].nargs == 0 || 558 db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0) 559 continue; 560 561 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number) 562 break; 563 } 564 565 if (port_idx == DB9_MAX_PORTS) { 566 pr_debug("Not using parport%d.\n", pp->number); 567 return; 568 } 569 570 mode = db9_cfg[port_idx].args[DB9_ARG_MODE]; 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 return; 575 } 576 577 db9_mode = &db9_modes[mode]; 578 579 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 580 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 581 return; 582 } 583 584 memset(&db9_parport_cb, 0, sizeof(db9_parport_cb)); 585 db9_parport_cb.flags = PARPORT_FLAG_EXCL; 586 587 pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx); 588 if (!pd) { 589 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 590 return; 591 } 592 593 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 594 if (!db9) 595 goto err_unreg_pardev; 596 597 mutex_init(&db9->mutex); 598 db9->pd = pd; 599 db9->mode = mode; 600 db9->parportno = pp->number; 601 timer_setup(&db9->timer, db9_timer, 0); 602 603 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 604 605 db9->dev[i] = input_dev = input_allocate_device(); 606 if (!input_dev) { 607 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 608 goto err_unreg_devs; 609 } 610 611 snprintf(db9->phys[i], sizeof(db9->phys[i]), 612 "%s/input%d", db9->pd->port->name, i); 613 614 input_dev->name = db9_mode->name; 615 input_dev->phys = db9->phys[i]; 616 input_dev->id.bustype = BUS_PARPORT; 617 input_dev->id.vendor = 0x0002; 618 input_dev->id.product = mode; 619 input_dev->id.version = 0x0100; 620 621 input_set_drvdata(input_dev, db9); 622 623 input_dev->open = db9_open; 624 input_dev->close = db9_close; 625 626 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 627 for (j = 0; j < db9_mode->n_buttons; j++) 628 set_bit(db9_mode->buttons[j], input_dev->keybit); 629 for (j = 0; j < db9_mode->n_axis; j++) { 630 if (j < 2) 631 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 632 else 633 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 634 } 635 636 if (input_register_device(input_dev)) 637 goto err_free_dev; 638 } 639 640 db9_base[port_idx] = db9; 641 return; 642 643 err_free_dev: 644 input_free_device(db9->dev[i]); 645 err_unreg_devs: 646 while (--i >= 0) 647 input_unregister_device(db9->dev[i]); 648 kfree(db9); 649 err_unreg_pardev: 650 parport_unregister_device(pd); 651} 652 653static void db9_detach(struct parport *port) 654{ 655 int i; 656 struct db9 *db9; 657 658 for (i = 0; i < DB9_MAX_PORTS; i++) { 659 if (db9_base[i] && db9_base[i]->parportno == port->number) 660 break; 661 } 662 663 if (i == DB9_MAX_PORTS) 664 return; 665 666 db9 = db9_base[i]; 667 db9_base[i] = NULL; 668 669 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 670 input_unregister_device(db9->dev[i]); 671 parport_unregister_device(db9->pd); 672 kfree(db9); 673} 674 675static struct parport_driver db9_parport_driver = { 676 .name = "db9", 677 .match_port = db9_attach, 678 .detach = db9_detach, 679 .devmodel = true, 680}; 681 682static int __init db9_init(void) 683{ 684 int i; 685 int have_dev = 0; 686 687 for (i = 0; i < DB9_MAX_PORTS; i++) { 688 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) 689 continue; 690 691 if (db9_cfg[i].nargs < 2) { 692 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 693 return -EINVAL; 694 } 695 696 have_dev = 1; 697 } 698 699 if (!have_dev) 700 return -ENODEV; 701 702 return parport_register_driver(&db9_parport_driver); 703} 704 705static void __exit db9_exit(void) 706{ 707 parport_unregister_driver(&db9_parport_driver); 708} 709 710module_init(db9_init); 711module_exit(db9_exit); 712