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 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/delay.h> 16 #include <linux/init.h> 17 #include <linux/parport.h> 18 #include <linux/input.h> 19 #include <linux/mutex.h> 20 #include <linux/slab.h> 21 22 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 23 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); 24 MODULE_LICENSE("GPL"); 25 26 struct db9_config { 27 int args[2]; 28 unsigned int nargs; 29 }; 30 31 #define DB9_MAX_PORTS 3 32 static struct db9_config db9_cfg[DB9_MAX_PORTS]; 33 34 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); 35 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); 36 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); 37 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); 38 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); 39 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); 40 41 #define DB9_ARG_PARPORT 0 42 #define DB9_ARG_MODE 1 43 44 #define DB9_MULTI_STICK 0x01 45 #define DB9_MULTI2_STICK 0x02 46 #define DB9_GENESIS_PAD 0x03 47 #define DB9_GENESIS5_PAD 0x05 48 #define DB9_GENESIS6_PAD 0x06 49 #define DB9_SATURN_PAD 0x07 50 #define DB9_MULTI_0802 0x08 51 #define DB9_MULTI_0802_2 0x09 52 #define DB9_CD32_PAD 0x0A 53 #define DB9_SATURN_DPP 0x0B 54 #define DB9_SATURN_DPP_2 0x0C 55 #define DB9_MAX_PAD 0x0D 56 57 #define DB9_UP 0x01 58 #define DB9_DOWN 0x02 59 #define DB9_LEFT 0x04 60 #define DB9_RIGHT 0x08 61 #define DB9_FIRE1 0x10 62 #define DB9_FIRE2 0x20 63 #define DB9_FIRE3 0x40 64 #define DB9_FIRE4 0x80 65 66 #define DB9_NORMAL 0x0a 67 #define DB9_NOSELECT 0x08 68 69 #define DB9_GENESIS6_DELAY 14 70 #define DB9_REFRESH_TIME HZ/100 71 72 #define DB9_MAX_DEVICES 2 73 74 struct db9_mode_data { 75 const char *name; 76 const short *buttons; 77 int n_buttons; 78 int n_pads; 79 int n_axis; 80 int bidirectional; 81 int reverse; 82 }; 83 84 struct db9 { 85 struct input_dev *dev[DB9_MAX_DEVICES]; 86 struct timer_list timer; 87 struct pardevice *pd; 88 int mode; 89 int used; 90 int parportno; 91 struct mutex mutex; 92 char phys[DB9_MAX_DEVICES][32]; 93 }; 94 95 static struct db9 *db9_base[3]; 96 97 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; 98 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; 99 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; 100 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 }; 101 102 static const struct db9_mode_data db9_modes[] = { 103 { NULL, NULL, 0, 0, 0, 0, 0 }, 104 { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 105 { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, 106 { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, 107 { NULL, NULL, 0, 0, 0, 0, 0 }, 108 { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, 109 { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, 110 { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, 111 { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, 112 { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, 113 { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, 114 { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, 115 { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, 116 }; 117 118 /* 119 * Saturn controllers 120 */ 121 #define DB9_SATURN_DELAY 300 122 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; 123 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; 124 125 /* 126 * db9_saturn_write_sub() writes 2 bit data. 127 */ 128 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) 129 { 130 unsigned char c; 131 132 switch (type) { 133 case 1: /* DPP1 */ 134 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; 135 parport_write_data(port, c); 136 break; 137 case 2: /* DPP2 */ 138 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; 139 parport_write_data(port, c); 140 break; 141 case 0: /* DB9 */ 142 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; 143 parport_write_control(port, c); 144 break; 145 } 146 } 147 148 /* 149 * gc_saturn_read_sub() reads 4 bit data. 150 */ 151 static unsigned char db9_saturn_read_sub(struct parport *port, int type) 152 { 153 unsigned char data; 154 155 if (type) { 156 /* DPP */ 157 data = parport_read_status(port) ^ 0x80; 158 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) 159 | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); 160 } else { 161 /* DB9 */ 162 data = parport_read_data(port) & 0x0f; 163 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) 164 | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); 165 } 166 } 167 168 /* 169 * db9_saturn_read_analog() sends clock and reads 8 bit data. 170 */ 171 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) 172 { 173 unsigned char data; 174 175 db9_saturn_write_sub(port, type, 0, powered, 0); 176 udelay(DB9_SATURN_DELAY); 177 data = db9_saturn_read_sub(port, type) << 4; 178 db9_saturn_write_sub(port, type, 2, powered, 0); 179 udelay(DB9_SATURN_DELAY); 180 data |= db9_saturn_read_sub(port, type); 181 return data; 182 } 183 184 /* 185 * db9_saturn_read_packet() reads whole saturn packet at connector 186 * and returns device identifier code. 187 */ 188 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) 189 { 190 int i, j; 191 unsigned char tmp; 192 193 db9_saturn_write_sub(port, type, 3, powered, 0); 194 data[0] = db9_saturn_read_sub(port, type); 195 switch (data[0] & 0x0f) { 196 case 0xf: 197 /* 1111 no pad */ 198 return data[0] = 0xff; 199 case 0x4: case 0x4 | 0x8: 200 /* ?100 : digital controller */ 201 db9_saturn_write_sub(port, type, 0, powered, 1); 202 data[2] = db9_saturn_read_sub(port, type) << 4; 203 db9_saturn_write_sub(port, type, 2, powered, 1); 204 data[1] = db9_saturn_read_sub(port, type) << 4; 205 db9_saturn_write_sub(port, type, 1, powered, 1); 206 data[1] |= db9_saturn_read_sub(port, type); 207 db9_saturn_write_sub(port, type, 3, powered, 1); 208 /* data[2] |= db9_saturn_read_sub(port, type); */ 209 data[2] |= data[0]; 210 return data[0] = 0x02; 211 case 0x1: 212 /* 0001 : analog controller or multitap */ 213 db9_saturn_write_sub(port, type, 2, powered, 0); 214 udelay(DB9_SATURN_DELAY); 215 data[0] = db9_saturn_read_analog(port, type, powered); 216 if (data[0] != 0x41) { 217 /* read analog controller */ 218 for (i = 0; i < (data[0] & 0x0f); i++) 219 data[i + 1] = db9_saturn_read_analog(port, type, powered); 220 db9_saturn_write_sub(port, type, 3, powered, 0); 221 return data[0]; 222 } else { 223 /* read multitap */ 224 if (db9_saturn_read_analog(port, type, powered) != 0x60) 225 return data[0] = 0xff; 226 for (i = 0; i < 60; i += 10) { 227 data[i] = db9_saturn_read_analog(port, type, powered); 228 if (data[i] != 0xff) 229 /* read each pad */ 230 for (j = 0; j < (data[i] & 0x0f); j++) 231 data[i + j + 1] = db9_saturn_read_analog(port, type, powered); 232 } 233 db9_saturn_write_sub(port, type, 3, powered, 0); 234 return 0x41; 235 } 236 case 0x0: 237 /* 0000 : mouse */ 238 db9_saturn_write_sub(port, type, 2, powered, 0); 239 udelay(DB9_SATURN_DELAY); 240 tmp = db9_saturn_read_analog(port, type, powered); 241 if (tmp == 0xff) { 242 for (i = 0; i < 3; i++) 243 data[i + 1] = db9_saturn_read_analog(port, type, powered); 244 db9_saturn_write_sub(port, type, 3, powered, 0); 245 return data[0] = 0xe3; 246 } 247 fallthrough; 248 default: 249 return data[0]; 250 } 251 } 252 253 /* 254 * db9_saturn_report() analyzes packet and reports. 255 */ 256 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) 257 { 258 struct input_dev *dev; 259 int tmp, i, j; 260 261 tmp = (id == 0x41) ? 60 : 10; 262 for (j = 0; j < tmp && n < max_pads; j += 10, n++) { 263 dev = devs[n]; 264 switch (data[j]) { 265 case 0x16: /* multi controller (analog 4 axis) */ 266 input_report_abs(dev, db9_abs[5], data[j + 6]); 267 fallthrough; 268 case 0x15: /* mission stick (analog 3 axis) */ 269 input_report_abs(dev, db9_abs[3], data[j + 4]); 270 input_report_abs(dev, db9_abs[4], data[j + 5]); 271 fallthrough; 272 case 0x13: /* racing controller (analog 1 axis) */ 273 input_report_abs(dev, db9_abs[2], data[j + 3]); 274 fallthrough; 275 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ 276 case 0x02: /* digital pad (digital 2 axis + buttons) */ 277 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 278 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 279 for (i = 0; i < 9; i++) 280 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 281 break; 282 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ 283 input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); 284 input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); 285 for (i = 0; i < 9; i++) 286 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); 287 input_report_abs(dev, db9_abs[2], data[j + 3]); 288 input_report_abs(dev, db9_abs[3], data[j + 4]); 289 input_report_abs(dev, db9_abs[4], data[j + 5]); 290 /* 291 input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); 292 input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); 293 */ 294 input_report_abs(dev, db9_abs[6], data[j + 7]); 295 input_report_abs(dev, db9_abs[7], data[j + 8]); 296 input_report_abs(dev, db9_abs[5], data[j + 9]); 297 break; 298 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ 299 input_report_key(dev, BTN_A, data[j + 3] & 0x80); 300 input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); 301 break; 302 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ 303 input_report_key(dev, BTN_START, data[j + 1] & 0x08); 304 input_report_key(dev, BTN_A, data[j + 1] & 0x04); 305 input_report_key(dev, BTN_C, data[j + 1] & 0x02); 306 input_report_key(dev, BTN_B, data[j + 1] & 0x01); 307 input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); 308 input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ 309 break; 310 case 0xff: 311 default: /* no pad */ 312 input_report_abs(dev, db9_abs[0], 0); 313 input_report_abs(dev, db9_abs[1], 0); 314 for (i = 0; i < 9; i++) 315 input_report_key(dev, db9_cd32_btn[i], 0); 316 break; 317 } 318 } 319 return n; 320 } 321 322 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) 323 { 324 unsigned char id, data[60]; 325 int type, n, max_pads; 326 int tmp, i; 327 328 switch (mode) { 329 case DB9_SATURN_PAD: 330 type = 0; 331 n = 1; 332 break; 333 case DB9_SATURN_DPP: 334 type = 1; 335 n = 1; 336 break; 337 case DB9_SATURN_DPP_2: 338 type = 1; 339 n = 2; 340 break; 341 default: 342 return -1; 343 } 344 max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); 345 for (tmp = 0, i = 0; i < n; i++) { 346 id = db9_saturn_read_packet(port, data, type + i, 1); 347 tmp = db9_saturn_report(id, data, devs, tmp, max_pads); 348 } 349 return 0; 350 } 351 352 static void db9_timer(struct timer_list *t) 353 { 354 struct db9 *db9 = from_timer(db9, t, timer); 355 struct parport *port = db9->pd->port; 356 struct input_dev *dev = db9->dev[0]; 357 struct input_dev *dev2 = db9->dev[1]; 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(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 366 input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 367 input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); 368 fallthrough; 369 370 case DB9_MULTI_0802: 371 372 data = parport_read_status(port) >> 3; 373 374 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 375 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 376 input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); 377 break; 378 379 case DB9_MULTI_STICK: 380 381 data = parport_read_data(port); 382 383 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 384 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 385 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 386 break; 387 388 case DB9_MULTI2_STICK: 389 390 data = parport_read_data(port); 391 392 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 393 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 394 input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); 395 input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); 396 break; 397 398 case DB9_GENESIS_PAD: 399 400 parport_write_control(port, DB9_NOSELECT); 401 data = parport_read_data(port); 402 403 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 404 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 405 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 406 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 407 408 parport_write_control(port, DB9_NORMAL); 409 data = parport_read_data(port); 410 411 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 412 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 413 break; 414 415 case DB9_GENESIS5_PAD: 416 417 parport_write_control(port, DB9_NOSELECT); 418 data = parport_read_data(port); 419 420 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 421 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 422 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 423 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 424 425 parport_write_control(port, DB9_NORMAL); 426 data = parport_read_data(port); 427 428 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 429 input_report_key(dev, BTN_X, ~data & DB9_FIRE2); 430 input_report_key(dev, BTN_Y, ~data & DB9_LEFT); 431 input_report_key(dev, BTN_START, ~data & DB9_RIGHT); 432 break; 433 434 case DB9_GENESIS6_PAD: 435 436 parport_write_control(port, DB9_NOSELECT); /* 1 */ 437 udelay(DB9_GENESIS6_DELAY); 438 data = parport_read_data(port); 439 440 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 441 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 442 input_report_key(dev, BTN_B, ~data & DB9_FIRE1); 443 input_report_key(dev, BTN_C, ~data & DB9_FIRE2); 444 445 parport_write_control(port, DB9_NORMAL); 446 udelay(DB9_GENESIS6_DELAY); 447 data = parport_read_data(port); 448 449 input_report_key(dev, BTN_A, ~data & DB9_FIRE1); 450 input_report_key(dev, BTN_START, ~data & DB9_FIRE2); 451 452 parport_write_control(port, DB9_NOSELECT); /* 2 */ 453 udelay(DB9_GENESIS6_DELAY); 454 parport_write_control(port, DB9_NORMAL); 455 udelay(DB9_GENESIS6_DELAY); 456 parport_write_control(port, DB9_NOSELECT); /* 3 */ 457 udelay(DB9_GENESIS6_DELAY); 458 data=parport_read_data(port); 459 460 input_report_key(dev, BTN_X, ~data & DB9_LEFT); 461 input_report_key(dev, BTN_Y, ~data & DB9_DOWN); 462 input_report_key(dev, BTN_Z, ~data & DB9_UP); 463 input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); 464 465 parport_write_control(port, DB9_NORMAL); 466 udelay(DB9_GENESIS6_DELAY); 467 parport_write_control(port, DB9_NOSELECT); /* 4 */ 468 udelay(DB9_GENESIS6_DELAY); 469 parport_write_control(port, DB9_NORMAL); 470 break; 471 472 case DB9_SATURN_PAD: 473 case DB9_SATURN_DPP: 474 case DB9_SATURN_DPP_2: 475 476 db9_saturn(db9->mode, port, db9->dev); 477 break; 478 479 case DB9_CD32_PAD: 480 481 data = parport_read_data(port); 482 483 input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); 484 input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); 485 486 parport_write_control(port, 0x0a); 487 488 for (i = 0; i < 7; i++) { 489 data = parport_read_data(port); 490 parport_write_control(port, 0x02); 491 parport_write_control(port, 0x0a); 492 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); 493 } 494 495 parport_write_control(port, 0x00); 496 break; 497 } 498 499 input_sync(dev); 500 501 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 502 } 503 504 static int db9_open(struct input_dev *dev) 505 { 506 struct db9 *db9 = input_get_drvdata(dev); 507 struct parport *port = db9->pd->port; 508 int err; 509 510 err = mutex_lock_interruptible(&db9->mutex); 511 if (err) 512 return err; 513 514 if (!db9->used++) { 515 parport_claim(db9->pd); 516 parport_write_data(port, 0xff); 517 if (db9_modes[db9->mode].reverse) { 518 parport_data_reverse(port); 519 parport_write_control(port, DB9_NORMAL); 520 } 521 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); 522 } 523 524 mutex_unlock(&db9->mutex); 525 return 0; 526 } 527 528 static void db9_close(struct input_dev *dev) 529 { 530 struct db9 *db9 = input_get_drvdata(dev); 531 struct parport *port = db9->pd->port; 532 533 mutex_lock(&db9->mutex); 534 if (!--db9->used) { 535 del_timer_sync(&db9->timer); 536 parport_write_control(port, 0x00); 537 parport_data_forward(port); 538 parport_release(db9->pd); 539 } 540 mutex_unlock(&db9->mutex); 541 } 542 543 static void db9_attach(struct parport *pp) 544 { 545 struct db9 *db9; 546 const struct db9_mode_data *db9_mode; 547 struct pardevice *pd; 548 struct input_dev *input_dev; 549 int i, j, port_idx; 550 int mode; 551 struct pardev_cb db9_parport_cb; 552 553 for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) { 554 if (db9_cfg[port_idx].nargs == 0 || 555 db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0) 556 continue; 557 558 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number) 559 break; 560 } 561 562 if (port_idx == DB9_MAX_PORTS) { 563 pr_debug("Not using parport%d.\n", pp->number); 564 return; 565 } 566 567 mode = db9_cfg[port_idx].args[DB9_ARG_MODE]; 568 569 if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { 570 printk(KERN_ERR "db9.c: Bad device type %d\n", mode); 571 return; 572 } 573 574 db9_mode = &db9_modes[mode]; 575 576 if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { 577 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); 578 return; 579 } 580 581 memset(&db9_parport_cb, 0, sizeof(db9_parport_cb)); 582 db9_parport_cb.flags = PARPORT_FLAG_EXCL; 583 584 pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx); 585 if (!pd) { 586 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); 587 return; 588 } 589 590 db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); 591 if (!db9) 592 goto err_unreg_pardev; 593 594 mutex_init(&db9->mutex); 595 db9->pd = pd; 596 db9->mode = mode; 597 db9->parportno = pp->number; 598 timer_setup(&db9->timer, db9_timer, 0); 599 600 for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { 601 602 db9->dev[i] = input_dev = input_allocate_device(); 603 if (!input_dev) { 604 printk(KERN_ERR "db9.c: Not enough memory for input device\n"); 605 goto err_unreg_devs; 606 } 607 608 snprintf(db9->phys[i], sizeof(db9->phys[i]), 609 "%s/input%d", db9->pd->port->name, i); 610 611 input_dev->name = db9_mode->name; 612 input_dev->phys = db9->phys[i]; 613 input_dev->id.bustype = BUS_PARPORT; 614 input_dev->id.vendor = 0x0002; 615 input_dev->id.product = mode; 616 input_dev->id.version = 0x0100; 617 618 input_set_drvdata(input_dev, db9); 619 620 input_dev->open = db9_open; 621 input_dev->close = db9_close; 622 623 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 624 for (j = 0; j < db9_mode->n_buttons; j++) 625 set_bit(db9_mode->buttons[j], input_dev->keybit); 626 for (j = 0; j < db9_mode->n_axis; j++) { 627 if (j < 2) 628 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); 629 else 630 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); 631 } 632 633 if (input_register_device(input_dev)) 634 goto err_free_dev; 635 } 636 637 db9_base[port_idx] = db9; 638 return; 639 640 err_free_dev: 641 input_free_device(db9->dev[i]); 642 err_unreg_devs: 643 while (--i >= 0) 644 input_unregister_device(db9->dev[i]); 645 kfree(db9); 646 err_unreg_pardev: 647 parport_unregister_device(pd); 648 } 649 650 static void db9_detach(struct parport *port) 651 { 652 int i; 653 struct db9 *db9; 654 655 for (i = 0; i < DB9_MAX_PORTS; i++) { 656 if (db9_base[i] && db9_base[i]->parportno == port->number) 657 break; 658 } 659 660 if (i == DB9_MAX_PORTS) 661 return; 662 663 db9 = db9_base[i]; 664 db9_base[i] = NULL; 665 666 for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) 667 input_unregister_device(db9->dev[i]); 668 parport_unregister_device(db9->pd); 669 kfree(db9); 670 } 671 672 static struct parport_driver db9_parport_driver = { 673 .name = "db9", 674 .match_port = db9_attach, 675 .detach = db9_detach, 676 .devmodel = true, 677 }; 678 679 static int __init db9_init(void) 680 { 681 int i; 682 int have_dev = 0; 683 684 for (i = 0; i < DB9_MAX_PORTS; i++) { 685 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) 686 continue; 687 688 if (db9_cfg[i].nargs < 2) { 689 printk(KERN_ERR "db9.c: Device type must be specified.\n"); 690 return -EINVAL; 691 } 692 693 have_dev = 1; 694 } 695 696 if (!have_dev) 697 return -ENODEV; 698 699 return parport_register_driver(&db9_parport_driver); 700 } 701 702 static void __exit db9_exit(void) 703 { 704 parport_unregister_driver(&db9_parport_driver); 705 } 706 707 module_init(db9_init); 708 module_exit(db9_exit); 709