1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Synaptics TouchPad PS/2 mouse driver 4 * 5 * 2003 Dmitry Torokhov <dtor@mail.ru> 6 * Added support for pass-through port. Special thanks to Peter Berg Larsen 7 * for explaining various Synaptics quirks. 8 * 9 * 2003 Peter Osterlund <petero2@telia.com> 10 * Ported to 2.5 input device infrastructure. 11 * 12 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 13 * start merging tpconfig and gpm code to a xfree-input module 14 * adding some changes and extensions (ex. 3rd and 4th button) 15 * 16 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 17 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 18 * code for the special synaptics commands (from the tpconfig-source) 19 * 20 * Trademarks are the property of their respective owners. 21 */ 22 23 #include <linux/module.h> 24 #include <linux/delay.h> 25 #include <linux/dmi.h> 26 #include <linux/input/mt.h> 27 #include <linux/serio.h> 28 #include <linux/libps2.h> 29 #include <linux/rmi.h> 30 #include <linux/i2c.h> 31 #include <linux/slab.h> 32 #include "psmouse.h" 33 #include "synaptics.h" 34 35 /* 36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 37 * section 2.3.2, which says that they should be valid regardless of the 38 * actual size of the sensor. 39 * Note that newer firmware allows querying device for maximum useable 40 * coordinates. 41 */ 42 #define XMIN 0 43 #define XMAX 6143 44 #define YMIN 0 45 #define YMAX 6143 46 #define XMIN_NOMINAL 1472 47 #define XMAX_NOMINAL 5472 48 #define YMIN_NOMINAL 1408 49 #define YMAX_NOMINAL 4448 50 51 /* Size in bits of absolute position values reported by the hardware */ 52 #define ABS_POS_BITS 13 53 54 /* 55 * These values should represent the absolute maximum value that will 56 * be reported for a positive position value. Some Synaptics firmware 57 * uses this value to indicate a finger near the edge of the touchpad 58 * whose precise position cannot be determined. 59 * 60 * At least one touchpad is known to report positions in excess of this 61 * value which are actually negative values truncated to the 13-bit 62 * reporting range. These values have never been observed to be lower 63 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 64 * negative and any other value as positive. 65 */ 66 #define X_MAX_POSITIVE 8176 67 #define Y_MAX_POSITIVE 8176 68 69 /* maximum ABS_MT_POSITION displacement (in mm) */ 70 #define DMAX 10 71 72 /***************************************************************************** 73 * Stuff we need even when we do not want native Synaptics support 74 ****************************************************************************/ 75 76 /* 77 * Set the synaptics touchpad mode byte by special commands 78 */ 79 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode) 80 { 81 u8 param[1]; 82 int error; 83 84 error = ps2_sliced_command(&psmouse->ps2dev, mode); 85 if (error) 86 return error; 87 88 param[0] = SYN_PS_SET_MODE2; 89 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); 90 if (error) 91 return error; 92 93 return 0; 94 } 95 96 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 97 { 98 struct ps2dev *ps2dev = &psmouse->ps2dev; 99 u8 param[4] = { 0 }; 100 101 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 102 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 103 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 105 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 106 107 if (param[1] != 0x47) 108 return -ENODEV; 109 110 if (set_properties) { 111 psmouse->vendor = "Synaptics"; 112 psmouse->name = "TouchPad"; 113 } 114 115 return 0; 116 } 117 118 void synaptics_reset(struct psmouse *psmouse) 119 { 120 /* reset touchpad back to relative mode, gestures enabled */ 121 synaptics_mode_cmd(psmouse, 0); 122 } 123 124 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 125 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 126 127 /* This list has been kindly provided by Synaptics. */ 128 static const char * const topbuttonpad_pnp_ids[] = { 129 "LEN0017", 130 "LEN0018", 131 "LEN0019", 132 "LEN0023", 133 "LEN002A", 134 "LEN002B", 135 "LEN002C", 136 "LEN002D", 137 "LEN002E", 138 "LEN0033", /* Helix */ 139 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 140 "LEN0035", /* X240 */ 141 "LEN0036", /* T440 */ 142 "LEN0037", /* X1 Carbon 2nd */ 143 "LEN0038", 144 "LEN0039", /* T440s */ 145 "LEN0041", 146 "LEN0042", /* Yoga */ 147 "LEN0045", 148 "LEN0047", 149 "LEN2000", /* S540 */ 150 "LEN2001", /* Edge E431 */ 151 "LEN2002", /* Edge E531 */ 152 "LEN2003", 153 "LEN2004", /* L440 */ 154 "LEN2005", 155 "LEN2006", /* Edge E440/E540 */ 156 "LEN2007", 157 "LEN2008", 158 "LEN2009", 159 "LEN200A", 160 "LEN200B", 161 NULL 162 }; 163 164 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 165 static const char * const smbus_pnp_ids[] = { 166 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ 167 "DLL0597", /* Dell Inspiron 3521 */ 168 "DLL060d", /* Dell Precision M3800 */ 169 "LEN0048", /* X1 Carbon 3 */ 170 "LEN0046", /* X250 */ 171 "LEN0049", /* Yoga 11e */ 172 "LEN004a", /* W541 */ 173 "LEN005b", /* P50 */ 174 "LEN005e", /* T560 */ 175 "LEN006c", /* T470s */ 176 "LEN007a", /* T470s */ 177 "LEN0071", /* T480 */ 178 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ 179 "LEN0073", /* X1 Carbon G5 (Elantech) */ 180 "LEN0091", /* X1 Carbon 6 */ 181 "LEN0092", /* X1 Carbon 6 */ 182 "LEN0093", /* T480 */ 183 "LEN0096", /* X280 */ 184 "LEN0097", /* X280 -> ALPS trackpoint */ 185 "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */ 186 "LEN009b", /* T580 */ 187 "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */ 188 "LEN040f", /* P1 Gen 3 */ 189 "LEN0411", /* L14 Gen 1 */ 190 "LEN200f", /* T450s */ 191 "LEN2044", /* L470 */ 192 "LEN2054", /* E480 */ 193 "LEN2055", /* E580 */ 194 "LEN2058", /* E490 */ 195 "LEN2068", /* T14 Gen 1 */ 196 "SYN1221", /* TUXEDO InfinityBook Pro 14 v5 */ 197 "SYN3003", /* HP EliteBook 850 G1 */ 198 "SYN3015", /* HP EliteBook 840 G2 */ 199 "SYN3052", /* HP EliteBook 840 G4 */ 200 "SYN3221", /* HP 15-ay000 */ 201 "SYN323d", /* HP Spectre X360 13-w013dx */ 202 "SYN3257", /* HP Envy 13-ad105ng */ 203 "TOS01f6", /* Dynabook Portege X30L-G */ 204 "TOS0213", /* Dynabook Portege X30-D */ 205 NULL 206 }; 207 #endif 208 209 static const char * const forcepad_pnp_ids[] = { 210 "SYN300D", 211 "SYN3014", 212 NULL 213 }; 214 215 /* 216 * Send a command to the synaptics touchpad by special commands 217 */ 218 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 219 { 220 int error; 221 222 error = ps2_sliced_command(&psmouse->ps2dev, cmd); 223 if (error) 224 return error; 225 226 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 227 if (error) 228 return error; 229 230 return 0; 231 } 232 233 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 234 { 235 int error; 236 union { 237 __be32 be_val; 238 char buf[4]; 239 } resp = { 0 }; 240 241 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 242 if (error) 243 return error; 244 245 *val = be32_to_cpu(resp.be_val); 246 return 0; 247 } 248 249 /* 250 * Identify Touchpad 251 * See also the SYN_ID_* macros 252 */ 253 static int synaptics_identify(struct psmouse *psmouse, 254 struct synaptics_device_info *info) 255 { 256 int error; 257 258 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 259 if (error) 260 return error; 261 262 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 263 } 264 265 /* 266 * Read the model-id bytes from the touchpad 267 * see also SYN_MODEL_* macros 268 */ 269 static int synaptics_model_id(struct psmouse *psmouse, 270 struct synaptics_device_info *info) 271 { 272 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 273 } 274 275 /* 276 * Read the firmware id from the touchpad 277 */ 278 static int synaptics_firmware_id(struct psmouse *psmouse, 279 struct synaptics_device_info *info) 280 { 281 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 282 &info->firmware_id); 283 } 284 285 /* 286 * Read the board id and the "More Extended Queries" from the touchpad 287 * The board id is encoded in the "QUERY MODES" response 288 */ 289 static int synaptics_query_modes(struct psmouse *psmouse, 290 struct synaptics_device_info *info) 291 { 292 u8 bid[3]; 293 int error; 294 295 /* firmwares prior 7.5 have no board_id encoded */ 296 if (SYN_ID_FULL(info->identity) < 0x705) 297 return 0; 298 299 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 300 if (error) 301 return error; 302 303 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 304 305 if (SYN_MEXT_CAP_BIT(bid[0])) 306 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 307 &info->ext_cap_10); 308 309 return 0; 310 } 311 312 /* 313 * Read the capability-bits from the touchpad 314 * see also the SYN_CAP_* macros 315 */ 316 static int synaptics_capability(struct psmouse *psmouse, 317 struct synaptics_device_info *info) 318 { 319 int error; 320 321 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 322 &info->capabilities); 323 if (error) 324 return error; 325 326 info->ext_cap = info->ext_cap_0c = 0; 327 328 /* 329 * Older firmwares had submodel ID fixed to 0x47 330 */ 331 if (SYN_ID_FULL(info->identity) < 0x705 && 332 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 333 return -ENXIO; 334 } 335 336 /* 337 * Unless capExtended is set the rest of the flags should be ignored 338 */ 339 if (!SYN_CAP_EXTENDED(info->capabilities)) 340 info->capabilities = 0; 341 342 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 343 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 344 &info->ext_cap); 345 if (error) { 346 psmouse_warn(psmouse, 347 "device claims to have extended capabilities, but I'm not able to read them.\n"); 348 } else { 349 /* 350 * if nExtBtn is greater than 8 it should be considered 351 * invalid and treated as 0 352 */ 353 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 354 info->ext_cap &= ~SYN_CAP_MB_MASK; 355 } 356 } 357 358 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 359 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 360 &info->ext_cap_0c); 361 if (error) 362 psmouse_warn(psmouse, 363 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 364 } 365 366 return 0; 367 } 368 369 /* 370 * Read touchpad resolution and maximum reported coordinates 371 * Resolution is left zero if touchpad does not support the query 372 */ 373 static int synaptics_resolution(struct psmouse *psmouse, 374 struct synaptics_device_info *info) 375 { 376 u8 resp[3]; 377 int error; 378 379 if (SYN_ID_MAJOR(info->identity) < 4) 380 return 0; 381 382 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 383 if (!error) { 384 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 385 info->x_res = resp[0]; /* x resolution in units/mm */ 386 info->y_res = resp[2]; /* y resolution in units/mm */ 387 } 388 } 389 390 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 391 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 392 error = synaptics_send_cmd(psmouse, 393 SYN_QUE_EXT_MAX_COORDS, resp); 394 if (error) { 395 psmouse_warn(psmouse, 396 "device claims to have max coordinates query, but I'm not able to read it.\n"); 397 } else { 398 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 399 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 400 psmouse_info(psmouse, 401 "queried max coordinates: x [..%d], y [..%d]\n", 402 info->x_max, info->y_max); 403 } 404 } 405 406 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 407 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 408 /* 409 * Firmware v8.1 does not report proper number of extended 410 * capabilities, but has been proven to report correct min 411 * coordinates. 412 */ 413 SYN_ID_FULL(info->identity) == 0x801)) { 414 error = synaptics_send_cmd(psmouse, 415 SYN_QUE_EXT_MIN_COORDS, resp); 416 if (error) { 417 psmouse_warn(psmouse, 418 "device claims to have min coordinates query, but I'm not able to read it.\n"); 419 } else { 420 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 421 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 422 psmouse_info(psmouse, 423 "queried min coordinates: x [%d..], y [%d..]\n", 424 info->x_min, info->y_min); 425 } 426 } 427 428 return 0; 429 } 430 431 static int synaptics_query_hardware(struct psmouse *psmouse, 432 struct synaptics_device_info *info) 433 { 434 int error; 435 436 memset(info, 0, sizeof(*info)); 437 438 error = synaptics_identify(psmouse, info); 439 if (error) 440 return error; 441 442 error = synaptics_model_id(psmouse, info); 443 if (error) 444 return error; 445 446 error = synaptics_firmware_id(psmouse, info); 447 if (error) 448 return error; 449 450 error = synaptics_query_modes(psmouse, info); 451 if (error) 452 return error; 453 454 error = synaptics_capability(psmouse, info); 455 if (error) 456 return error; 457 458 error = synaptics_resolution(psmouse, info); 459 if (error) 460 return error; 461 462 return 0; 463 } 464 465 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 466 467 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 468 469 static bool cr48_profile_sensor; 470 471 #define ANY_BOARD_ID 0 472 struct min_max_quirk { 473 const char * const *pnp_ids; 474 struct { 475 u32 min, max; 476 } board_id; 477 u32 x_min, x_max, y_min, y_max; 478 }; 479 480 static const struct min_max_quirk min_max_pnpid_table[] = { 481 { 482 (const char * const []){"LEN0033", NULL}, 483 {ANY_BOARD_ID, ANY_BOARD_ID}, 484 1024, 5052, 2258, 4832 485 }, 486 { 487 (const char * const []){"LEN0042", NULL}, 488 {ANY_BOARD_ID, ANY_BOARD_ID}, 489 1232, 5710, 1156, 4696 490 }, 491 { 492 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 493 "LEN0039", "LEN2002", "LEN2004", 494 NULL}, 495 {ANY_BOARD_ID, 2961}, 496 1024, 5112, 2024, 4832 497 }, 498 { 499 (const char * const []){"LEN2000", NULL}, 500 {ANY_BOARD_ID, ANY_BOARD_ID}, 501 1024, 5113, 2021, 4832 502 }, 503 { 504 (const char * const []){"LEN2001", NULL}, 505 {ANY_BOARD_ID, ANY_BOARD_ID}, 506 1024, 5022, 2508, 4832 507 }, 508 { 509 (const char * const []){"LEN2006", NULL}, 510 {2691, 2691}, 511 1024, 5045, 2457, 4832 512 }, 513 { 514 (const char * const []){"LEN2006", NULL}, 515 {ANY_BOARD_ID, ANY_BOARD_ID}, 516 1264, 5675, 1171, 4688 517 }, 518 { } 519 }; 520 521 /***************************************************************************** 522 * Synaptics communications functions 523 ****************************************************************************/ 524 525 /* 526 * Synaptics touchpads report the y coordinate from bottom to top, which is 527 * opposite from what userspace expects. 528 * This function is used to invert y before reporting. 529 */ 530 static int synaptics_invert_y(int y) 531 { 532 return YMAX_NOMINAL + YMIN_NOMINAL - y; 533 } 534 535 /* 536 * Apply quirk(s) if the hardware matches 537 */ 538 static void synaptics_apply_quirks(struct psmouse *psmouse, 539 struct synaptics_device_info *info) 540 { 541 int i; 542 543 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 544 if (!psmouse_matches_pnp_id(psmouse, 545 min_max_pnpid_table[i].pnp_ids)) 546 continue; 547 548 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 549 info->board_id < min_max_pnpid_table[i].board_id.min) 550 continue; 551 552 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 553 info->board_id > min_max_pnpid_table[i].board_id.max) 554 continue; 555 556 info->x_min = min_max_pnpid_table[i].x_min; 557 info->x_max = min_max_pnpid_table[i].x_max; 558 info->y_min = min_max_pnpid_table[i].y_min; 559 info->y_max = min_max_pnpid_table[i].y_max; 560 psmouse_info(psmouse, 561 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 562 info->x_min, info->x_max, 563 info->y_min, info->y_max); 564 break; 565 } 566 } 567 568 static bool synaptics_has_agm(struct synaptics_data *priv) 569 { 570 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 571 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); 572 } 573 574 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 575 { 576 static u8 param = 0xc8; 577 int error; 578 579 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); 580 if (error) 581 return error; 582 583 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 584 if (error) 585 return error; 586 587 return 0; 588 } 589 590 static int synaptics_set_mode(struct psmouse *psmouse) 591 { 592 struct synaptics_data *priv = psmouse->private; 593 int error; 594 595 priv->mode = 0; 596 if (priv->absolute_mode) 597 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 598 if (priv->disable_gesture) 599 priv->mode |= SYN_BIT_DISABLE_GESTURE; 600 if (psmouse->rate >= 80) 601 priv->mode |= SYN_BIT_HIGH_RATE; 602 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 603 priv->mode |= SYN_BIT_W_MODE; 604 605 error = synaptics_mode_cmd(psmouse, priv->mode); 606 if (error) 607 return error; 608 609 if (priv->absolute_mode && synaptics_has_agm(priv)) { 610 error = synaptics_set_advanced_gesture_mode(psmouse); 611 if (error) { 612 psmouse_err(psmouse, 613 "Advanced gesture mode init failed: %d\n", 614 error); 615 return error; 616 } 617 } 618 619 return 0; 620 } 621 622 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 623 { 624 struct synaptics_data *priv = psmouse->private; 625 626 if (rate >= 80) { 627 priv->mode |= SYN_BIT_HIGH_RATE; 628 psmouse->rate = 80; 629 } else { 630 priv->mode &= ~SYN_BIT_HIGH_RATE; 631 psmouse->rate = 40; 632 } 633 634 synaptics_mode_cmd(psmouse, priv->mode); 635 } 636 637 /***************************************************************************** 638 * Synaptics pass-through PS/2 port support 639 ****************************************************************************/ 640 static int synaptics_pt_write(struct serio *serio, u8 c) 641 { 642 struct psmouse *parent = psmouse_from_serio(serio->parent); 643 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 644 int error; 645 646 error = ps2_sliced_command(&parent->ps2dev, c); 647 if (error) 648 return error; 649 650 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 651 if (error) 652 return error; 653 654 return 0; 655 } 656 657 static int synaptics_pt_start(struct serio *serio) 658 { 659 struct psmouse *parent = psmouse_from_serio(serio->parent); 660 struct synaptics_data *priv = parent->private; 661 662 guard(serio_pause_rx)(parent->ps2dev.serio); 663 priv->pt_port = serio; 664 665 return 0; 666 } 667 668 static void synaptics_pt_stop(struct serio *serio) 669 { 670 struct psmouse *parent = psmouse_from_serio(serio->parent); 671 struct synaptics_data *priv = parent->private; 672 673 guard(serio_pause_rx)(parent->ps2dev.serio); 674 priv->pt_port = NULL; 675 } 676 677 static int synaptics_pt_open(struct serio *serio) 678 { 679 struct psmouse *parent = psmouse_from_serio(serio->parent); 680 struct synaptics_data *priv = parent->private; 681 682 guard(serio_pause_rx)(parent->ps2dev.serio); 683 priv->pt_port_open = true; 684 685 return 0; 686 } 687 688 static void synaptics_pt_close(struct serio *serio) 689 { 690 struct psmouse *parent = psmouse_from_serio(serio->parent); 691 struct synaptics_data *priv = parent->private; 692 693 guard(serio_pause_rx)(parent->ps2dev.serio); 694 priv->pt_port_open = false; 695 } 696 697 static int synaptics_is_pt_packet(u8 *buf) 698 { 699 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 700 } 701 702 static void synaptics_pass_pt_packet(struct synaptics_data *priv, u8 *packet) 703 { 704 struct serio *ptport; 705 706 ptport = priv->pt_port; 707 if (!ptport) 708 return; 709 710 serio_interrupt(ptport, packet[1], 0); 711 712 if (priv->pt_port_open) { 713 struct psmouse *child = psmouse_from_serio(ptport); 714 715 if (child->state == PSMOUSE_ACTIVATED) { 716 serio_interrupt(ptport, packet[4], 0); 717 serio_interrupt(ptport, packet[5], 0); 718 if (child->pktsize == 4) 719 serio_interrupt(ptport, packet[2], 0); 720 } 721 } 722 } 723 724 static void synaptics_pt_activate(struct psmouse *psmouse) 725 { 726 struct synaptics_data *priv = psmouse->private; 727 struct psmouse *child = psmouse_from_serio(priv->pt_port); 728 729 /* adjust the touchpad to child's choice of protocol */ 730 if (child) { 731 if (child->pktsize == 4) 732 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 733 else 734 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 735 736 if (synaptics_mode_cmd(psmouse, priv->mode)) 737 psmouse_warn(psmouse, 738 "failed to switch guest protocol\n"); 739 } 740 } 741 742 static void synaptics_pt_create(struct psmouse *psmouse) 743 { 744 struct serio *serio; 745 746 serio = kzalloc_obj(*serio); 747 if (!serio) { 748 psmouse_err(psmouse, 749 "not enough memory for pass-through port\n"); 750 return; 751 } 752 753 serio->id.type = SERIO_PS_PSTHRU; 754 strscpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 755 strscpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys)); 756 serio->write = synaptics_pt_write; 757 serio->start = synaptics_pt_start; 758 serio->stop = synaptics_pt_stop; 759 serio->open = synaptics_pt_open; 760 serio->close = synaptics_pt_close; 761 serio->parent = psmouse->ps2dev.serio; 762 763 psmouse->pt_activate = synaptics_pt_activate; 764 765 psmouse_info(psmouse, "serio: %s port at %s\n", 766 serio->name, psmouse->phys); 767 serio_register_port(serio); 768 } 769 770 /***************************************************************************** 771 * Functions to interpret the absolute mode packets 772 ****************************************************************************/ 773 774 static void synaptics_parse_agm(const u8 buf[], 775 struct synaptics_data *priv, 776 struct synaptics_hw_state *hw) 777 { 778 struct synaptics_hw_state *agm = &priv->agm; 779 int agm_packet_type; 780 781 agm_packet_type = (buf[5] & 0x30) >> 4; 782 switch (agm_packet_type) { 783 case 1: 784 /* Gesture packet: (x, y, z) half resolution */ 785 agm->w = hw->w; 786 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 787 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 788 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 789 break; 790 791 case 2: 792 /* AGM-CONTACT packet: we are only interested in the count */ 793 priv->agm_count = buf[1]; 794 break; 795 796 default: 797 break; 798 } 799 } 800 801 static void synaptics_parse_ext_buttons(const u8 buf[], 802 struct synaptics_data *priv, 803 struct synaptics_hw_state *hw) 804 { 805 unsigned int ext_bits = 806 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 807 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 808 809 hw->ext_buttons = buf[4] & ext_mask; 810 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 811 } 812 813 static int synaptics_parse_hw_state(const u8 buf[], 814 struct synaptics_data *priv, 815 struct synaptics_hw_state *hw) 816 { 817 memset(hw, 0, sizeof(struct synaptics_hw_state)); 818 819 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 820 hw->w = (((buf[0] & 0x30) >> 2) | 821 ((buf[0] & 0x04) >> 1) | 822 ((buf[3] & 0x04) >> 2)); 823 824 if (synaptics_has_agm(priv) && hw->w == 2) { 825 synaptics_parse_agm(buf, priv, hw); 826 return 1; 827 } 828 829 hw->x = (((buf[3] & 0x10) << 8) | 830 ((buf[1] & 0x0f) << 8) | 831 buf[4]); 832 hw->y = (((buf[3] & 0x20) << 7) | 833 ((buf[1] & 0xf0) << 4) | 834 buf[5]); 835 hw->z = buf[2]; 836 837 hw->left = (buf[0] & 0x01) ? 1 : 0; 838 hw->right = (buf[0] & 0x02) ? 1 : 0; 839 840 if (priv->is_forcepad) { 841 /* 842 * ForcePads, like Clickpads, use middle button 843 * bits to report primary button clicks. 844 * Unfortunately they report primary button not 845 * only when user presses on the pad above certain 846 * threshold, but also when there are more than one 847 * finger on the touchpad, which interferes with 848 * out multi-finger gestures. 849 */ 850 if (hw->z == 0) { 851 /* No contacts */ 852 priv->press = priv->report_press = false; 853 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 854 /* 855 * Single-finger touch with pressure above 856 * the threshold. If pressure stays long 857 * enough, we'll start reporting primary 858 * button. We rely on the device continuing 859 * sending data even if finger does not 860 * move. 861 */ 862 if (!priv->press) { 863 priv->press_start = jiffies; 864 priv->press = true; 865 } else if (time_after(jiffies, 866 priv->press_start + 867 msecs_to_jiffies(50))) { 868 priv->report_press = true; 869 } 870 } else { 871 priv->press = false; 872 } 873 874 hw->left = priv->report_press; 875 876 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 877 /* 878 * Clickpad's button is transmitted as middle button, 879 * however, since it is primary button, we will report 880 * it as BTN_LEFT. 881 */ 882 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 883 884 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 885 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 886 if (hw->w == 2) 887 hw->scroll = (s8)buf[1]; 888 } 889 890 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 891 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 892 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 893 } 894 895 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 896 ((buf[0] ^ buf[3]) & 0x02)) { 897 synaptics_parse_ext_buttons(buf, priv, hw); 898 } 899 } else { 900 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 901 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 902 903 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 904 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 905 906 hw->left = (buf[0] & 0x01) ? 1 : 0; 907 hw->right = (buf[0] & 0x02) ? 1 : 0; 908 } 909 910 /* 911 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 912 * is used by some firmware to indicate a finger at the edge of 913 * the touchpad whose precise position cannot be determined, so 914 * convert these values to the maximum axis value. 915 */ 916 if (hw->x > X_MAX_POSITIVE) 917 hw->x -= 1 << ABS_POS_BITS; 918 else if (hw->x == X_MAX_POSITIVE) 919 hw->x = XMAX; 920 921 if (hw->y > Y_MAX_POSITIVE) 922 hw->y -= 1 << ABS_POS_BITS; 923 else if (hw->y == Y_MAX_POSITIVE) 924 hw->y = YMAX; 925 926 return 0; 927 } 928 929 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 930 bool active, int x, int y) 931 { 932 input_mt_slot(dev, slot); 933 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 934 if (active) { 935 input_report_abs(dev, ABS_MT_POSITION_X, x); 936 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 937 } 938 } 939 940 static void synaptics_report_semi_mt_data(struct input_dev *dev, 941 const struct synaptics_hw_state *a, 942 const struct synaptics_hw_state *b, 943 int num_fingers) 944 { 945 if (num_fingers >= 2) { 946 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 947 min(a->y, b->y)); 948 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 949 max(a->y, b->y)); 950 } else if (num_fingers == 1) { 951 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 952 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 953 } else { 954 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 955 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 956 } 957 } 958 959 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 960 const struct synaptics_hw_state *hw) 961 { 962 struct input_dev *dev = psmouse->dev; 963 struct synaptics_data *priv = psmouse->private; 964 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 965 int i; 966 967 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 968 return; 969 970 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 971 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 972 SYN_ID_FULL(priv->info.identity) == 0x802) && 973 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 974 return; 975 976 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 977 for (i = 0; i < ext_bits; i++) { 978 input_report_key(dev, BTN_0 + 2 * i, 979 hw->ext_buttons & BIT(i)); 980 input_report_key(dev, BTN_1 + 2 * i, 981 hw->ext_buttons & BIT(i + ext_bits)); 982 } 983 return; 984 } 985 986 /* 987 * This generation of touchpads has the trackstick buttons 988 * physically wired to the touchpad. Re-route them through 989 * the pass-through interface. 990 */ 991 if (priv->pt_port) { 992 u8 pt_buttons; 993 994 /* The trackstick expects at most 3 buttons */ 995 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 996 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 997 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 998 999 serio_interrupt(priv->pt_port, 1000 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 1001 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 1002 } 1003 } 1004 1005 static void synaptics_report_buttons(struct psmouse *psmouse, 1006 const struct synaptics_hw_state *hw) 1007 { 1008 struct input_dev *dev = psmouse->dev; 1009 struct synaptics_data *priv = psmouse->private; 1010 1011 input_report_key(dev, BTN_LEFT, hw->left); 1012 input_report_key(dev, BTN_RIGHT, hw->right); 1013 1014 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 1015 input_report_key(dev, BTN_MIDDLE, hw->middle); 1016 1017 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 1018 input_report_key(dev, BTN_FORWARD, hw->up); 1019 input_report_key(dev, BTN_BACK, hw->down); 1020 } 1021 1022 synaptics_report_ext_buttons(psmouse, hw); 1023 } 1024 1025 static void synaptics_report_mt_data(struct psmouse *psmouse, 1026 const struct synaptics_hw_state *sgm, 1027 int num_fingers) 1028 { 1029 struct input_dev *dev = psmouse->dev; 1030 struct synaptics_data *priv = psmouse->private; 1031 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 1032 struct input_mt_pos pos[2]; 1033 int slot[2], nsemi, i; 1034 1035 nsemi = clamp_val(num_fingers, 0, 2); 1036 1037 for (i = 0; i < nsemi; i++) { 1038 pos[i].x = hw[i]->x; 1039 pos[i].y = synaptics_invert_y(hw[i]->y); 1040 } 1041 1042 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 1043 1044 for (i = 0; i < nsemi; i++) { 1045 input_mt_slot(dev, slot[i]); 1046 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 1047 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 1048 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 1049 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 1050 } 1051 1052 input_mt_drop_unused(dev); 1053 1054 /* Don't use active slot count to generate BTN_TOOL events. */ 1055 input_mt_report_pointer_emulation(dev, false); 1056 1057 /* Send the number of fingers reported by touchpad itself. */ 1058 input_mt_report_finger_count(dev, num_fingers); 1059 1060 synaptics_report_buttons(psmouse, sgm); 1061 1062 input_sync(dev); 1063 } 1064 1065 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1066 struct synaptics_hw_state *sgm) 1067 { 1068 struct synaptics_data *priv = psmouse->private; 1069 int num_fingers; 1070 1071 /* 1072 * Update mt_state using the new finger count and current mt_state. 1073 */ 1074 if (sgm->z == 0) 1075 num_fingers = 0; 1076 else if (sgm->w >= 4) 1077 num_fingers = 1; 1078 else if (sgm->w == 0) 1079 num_fingers = 2; 1080 else if (sgm->w == 1) 1081 num_fingers = priv->agm_count ? priv->agm_count : 3; 1082 else 1083 num_fingers = 4; 1084 1085 /* Send resulting input events to user space */ 1086 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1087 } 1088 1089 static bool synaptics_has_multifinger(struct synaptics_data *priv) 1090 { 1091 if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) 1092 return true; 1093 1094 /* Advanced gesture mode also sends multi finger data */ 1095 return synaptics_has_agm(priv); 1096 } 1097 1098 /* 1099 * called for each full received packet from the touchpad 1100 */ 1101 static void synaptics_process_packet(struct psmouse *psmouse) 1102 { 1103 struct input_dev *dev = psmouse->dev; 1104 struct synaptics_data *priv = psmouse->private; 1105 struct synaptics_device_info *info = &priv->info; 1106 struct synaptics_hw_state hw; 1107 int num_fingers; 1108 int finger_width; 1109 1110 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1111 return; 1112 1113 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1114 synaptics_image_sensor_process(psmouse, &hw); 1115 return; 1116 } 1117 1118 if (hw.scroll) { 1119 priv->scroll += hw.scroll; 1120 1121 while (priv->scroll >= 4) { 1122 input_report_key(dev, BTN_BACK, !hw.down); 1123 input_sync(dev); 1124 input_report_key(dev, BTN_BACK, hw.down); 1125 input_sync(dev); 1126 priv->scroll -= 4; 1127 } 1128 while (priv->scroll <= -4) { 1129 input_report_key(dev, BTN_FORWARD, !hw.up); 1130 input_sync(dev); 1131 input_report_key(dev, BTN_FORWARD, hw.up); 1132 input_sync(dev); 1133 priv->scroll += 4; 1134 } 1135 return; 1136 } 1137 1138 if (hw.z > 0 && hw.x > 1) { 1139 num_fingers = 1; 1140 finger_width = 5; 1141 if (SYN_CAP_EXTENDED(info->capabilities)) { 1142 switch (hw.w) { 1143 case 0 ... 1: 1144 if (synaptics_has_multifinger(priv)) 1145 num_fingers = hw.w + 2; 1146 break; 1147 case 2: 1148 /* 1149 * SYN_MODEL_PEN(info->model_id): even if 1150 * the device supports pen, we treat it as 1151 * a single finger. 1152 */ 1153 break; 1154 case 4 ... 15: 1155 if (SYN_CAP_PALMDETECT(info->capabilities)) 1156 finger_width = hw.w; 1157 break; 1158 } 1159 } 1160 } else { 1161 num_fingers = 0; 1162 finger_width = 0; 1163 } 1164 1165 if (cr48_profile_sensor) { 1166 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1167 return; 1168 } 1169 1170 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1171 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1172 num_fingers); 1173 1174 /* Post events 1175 * BTN_TOUCH has to be first as mousedev relies on it when doing 1176 * absolute -> relative conversion 1177 */ 1178 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1179 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1180 1181 if (num_fingers > 0) { 1182 input_report_abs(dev, ABS_X, hw.x); 1183 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1184 } 1185 input_report_abs(dev, ABS_PRESSURE, hw.z); 1186 1187 if (SYN_CAP_PALMDETECT(info->capabilities)) 1188 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1189 1190 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1191 if (synaptics_has_multifinger(priv)) { 1192 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1193 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1194 } 1195 1196 synaptics_report_buttons(psmouse, &hw); 1197 1198 input_sync(dev); 1199 } 1200 1201 static bool synaptics_validate_byte(struct psmouse *psmouse, 1202 int idx, enum synaptics_pkt_type pkt_type) 1203 { 1204 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1205 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1206 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1207 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1208 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1209 const u8 *packet = psmouse->packet; 1210 1211 if (idx < 0 || idx > 4) 1212 return false; 1213 1214 switch (pkt_type) { 1215 1216 case SYN_NEWABS: 1217 case SYN_NEWABS_RELAXED: 1218 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1219 1220 case SYN_NEWABS_STRICT: 1221 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1222 1223 case SYN_OLDABS: 1224 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1225 1226 default: 1227 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1228 return false; 1229 } 1230 } 1231 1232 static enum synaptics_pkt_type 1233 synaptics_detect_pkt_type(struct psmouse *psmouse) 1234 { 1235 int i; 1236 1237 for (i = 0; i < 5; i++) { 1238 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1239 psmouse_info(psmouse, "using relaxed packet validation\n"); 1240 return SYN_NEWABS_RELAXED; 1241 } 1242 } 1243 1244 return SYN_NEWABS_STRICT; 1245 } 1246 1247 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1248 { 1249 struct synaptics_data *priv = psmouse->private; 1250 1251 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1252 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1253 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1254 1255 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1256 synaptics_is_pt_packet(psmouse->packet)) { 1257 synaptics_pass_pt_packet(priv, psmouse->packet); 1258 } else { 1259 synaptics_process_packet(psmouse); 1260 } 1261 1262 return PSMOUSE_FULL_PACKET; 1263 } 1264 1265 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1266 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1267 } 1268 1269 /***************************************************************************** 1270 * Driver initialization/cleanup functions 1271 ****************************************************************************/ 1272 static void set_abs_position_params(struct input_dev *dev, 1273 struct synaptics_device_info *info, 1274 int x_code, int y_code) 1275 { 1276 int x_min = info->x_min ?: XMIN_NOMINAL; 1277 int x_max = info->x_max ?: XMAX_NOMINAL; 1278 int y_min = info->y_min ?: YMIN_NOMINAL; 1279 int y_max = info->y_max ?: YMAX_NOMINAL; 1280 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1281 SYN_REDUCED_FILTER_FUZZ : 0; 1282 1283 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1284 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1285 input_abs_set_res(dev, x_code, info->x_res); 1286 input_abs_set_res(dev, y_code, info->y_res); 1287 } 1288 1289 static int set_input_params(struct psmouse *psmouse, 1290 struct synaptics_data *priv) 1291 { 1292 struct input_dev *dev = psmouse->dev; 1293 struct synaptics_device_info *info = &priv->info; 1294 int i; 1295 int error; 1296 1297 /* Reset default psmouse capabilities */ 1298 __clear_bit(EV_REL, dev->evbit); 1299 bitmap_zero(dev->relbit, REL_CNT); 1300 bitmap_zero(dev->keybit, KEY_CNT); 1301 1302 /* Things that apply to both modes */ 1303 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1304 1305 input_set_capability(dev, EV_KEY, BTN_LEFT); 1306 1307 /* Clickpads report only left button */ 1308 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1309 input_set_capability(dev, EV_KEY, BTN_RIGHT); 1310 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1311 input_set_capability(dev, EV_KEY, BTN_MIDDLE); 1312 } 1313 1314 if (!priv->absolute_mode) { 1315 /* Relative mode */ 1316 input_set_capability(dev, EV_REL, REL_X); 1317 input_set_capability(dev, EV_REL, REL_Y); 1318 return 0; 1319 } 1320 1321 /* Absolute mode */ 1322 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1323 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1324 1325 if (cr48_profile_sensor) 1326 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1327 1328 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1329 set_abs_position_params(dev, info, 1330 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1331 /* Image sensors can report per-contact pressure */ 1332 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1333 1334 error = input_mt_init_slots(dev, 2, 1335 INPUT_MT_POINTER | INPUT_MT_TRACK); 1336 if (error) 1337 return error; 1338 1339 /* Image sensors can signal 4 and 5 finger clicks */ 1340 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); 1341 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); 1342 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1343 set_abs_position_params(dev, info, 1344 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1345 /* 1346 * Profile sensor in CR-48 tracks contacts reasonably well, 1347 * other non-image sensors with AGM use semi-mt. 1348 */ 1349 error = input_mt_init_slots(dev, 2, 1350 INPUT_MT_POINTER | 1351 (cr48_profile_sensor ? 1352 INPUT_MT_TRACK : 1353 INPUT_MT_SEMI_MT)); 1354 if (error) 1355 return error; 1356 1357 /* 1358 * For semi-mt devices we send ABS_X/Y ourselves instead of 1359 * input_mt_report_pointer_emulation. But 1360 * input_mt_init_slots() resets the fuzz to 0, leading to a 1361 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X 1362 * position. Let's re-initialize ABS_X/Y here. 1363 */ 1364 if (!cr48_profile_sensor) 1365 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1366 } 1367 1368 if (SYN_CAP_PALMDETECT(info->capabilities)) 1369 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1370 1371 input_set_capability(dev, EV_KEY, BTN_TOUCH); 1372 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); 1373 1374 if (synaptics_has_multifinger(priv)) { 1375 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); 1376 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); 1377 } 1378 1379 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1380 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1381 input_set_capability(dev, EV_KEY, BTN_FORWARD); 1382 input_set_capability(dev, EV_KEY, BTN_BACK); 1383 } 1384 1385 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1386 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1387 input_set_capability(dev, EV_KEY, BTN_0 + i); 1388 1389 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1390 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1391 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1392 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1393 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1394 } 1395 1396 return 0; 1397 } 1398 1399 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1400 void *data, char *buf) 1401 { 1402 struct synaptics_data *priv = psmouse->private; 1403 1404 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1405 } 1406 1407 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1408 void *data, const char *buf, 1409 size_t len) 1410 { 1411 struct synaptics_data *priv = psmouse->private; 1412 unsigned int value; 1413 int err; 1414 1415 err = kstrtouint(buf, 10, &value); 1416 if (err) 1417 return err; 1418 1419 if (value > 1) 1420 return -EINVAL; 1421 1422 if (value == priv->disable_gesture) 1423 return len; 1424 1425 priv->disable_gesture = value; 1426 if (value) 1427 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1428 else 1429 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1430 1431 if (synaptics_mode_cmd(psmouse, priv->mode)) 1432 return -EIO; 1433 1434 return len; 1435 } 1436 1437 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1438 synaptics_show_disable_gesture, 1439 synaptics_set_disable_gesture); 1440 1441 static void synaptics_disconnect(struct psmouse *psmouse) 1442 { 1443 struct synaptics_data *priv = psmouse->private; 1444 1445 /* 1446 * We might have left a breadcrumb when trying to 1447 * set up SMbus companion. 1448 */ 1449 psmouse_smbus_cleanup(psmouse); 1450 1451 if (!priv->absolute_mode && 1452 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1453 device_remove_file(&psmouse->ps2dev.serio->dev, 1454 &psmouse_attr_disable_gesture.dattr); 1455 1456 synaptics_reset(psmouse); 1457 kfree(priv); 1458 psmouse->private = NULL; 1459 } 1460 1461 static int synaptics_reconnect(struct psmouse *psmouse) 1462 { 1463 struct synaptics_data *priv = psmouse->private; 1464 struct synaptics_device_info info; 1465 u8 param[2]; 1466 int retry = 0; 1467 int error; 1468 1469 do { 1470 psmouse_reset(psmouse); 1471 if (retry) { 1472 /* 1473 * On some boxes, right after resuming, the touchpad 1474 * needs some time to finish initializing (I assume 1475 * it needs time to calibrate) and start responding 1476 * to Synaptics-specific queries, so let's wait a 1477 * bit. 1478 */ 1479 ssleep(1); 1480 } 1481 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1482 error = synaptics_detect(psmouse, 0); 1483 } while (error && ++retry < 3); 1484 1485 if (error) 1486 return error; 1487 1488 if (retry > 1) 1489 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1490 1491 error = synaptics_query_hardware(psmouse, &info); 1492 if (error) { 1493 psmouse_err(psmouse, "Unable to query device.\n"); 1494 return error; 1495 } 1496 1497 error = synaptics_set_mode(psmouse); 1498 if (error) { 1499 psmouse_err(psmouse, "Unable to initialize device.\n"); 1500 return error; 1501 } 1502 1503 if (info.identity != priv->info.identity || 1504 info.model_id != priv->info.model_id || 1505 info.capabilities != priv->info.capabilities || 1506 info.ext_cap != priv->info.ext_cap) { 1507 psmouse_err(psmouse, 1508 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1509 priv->info.identity, info.identity, 1510 priv->info.model_id, info.model_id, 1511 priv->info.capabilities, info.capabilities, 1512 priv->info.ext_cap, info.ext_cap); 1513 return -ENXIO; 1514 } 1515 1516 return 0; 1517 } 1518 1519 static bool impaired_toshiba_kbc; 1520 1521 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1522 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1523 { 1524 /* Toshiba Satellite */ 1525 .matches = { 1526 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1527 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1528 }, 1529 }, 1530 { 1531 /* Toshiba Dynabook */ 1532 .matches = { 1533 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1534 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1535 }, 1536 }, 1537 { 1538 /* Toshiba Portege M300 */ 1539 .matches = { 1540 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1541 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1542 }, 1543 1544 }, 1545 { 1546 /* Toshiba Portege M300 */ 1547 .matches = { 1548 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1549 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1550 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1551 }, 1552 1553 }, 1554 #endif 1555 { } 1556 }; 1557 1558 static bool broken_olpc_ec; 1559 1560 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1561 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1562 { 1563 /* OLPC XO-1 or XO-1.5 */ 1564 .matches = { 1565 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1566 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1567 }, 1568 }, 1569 #endif 1570 { } 1571 }; 1572 1573 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1574 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1575 { 1576 /* Cr-48 Chromebook (Codename Mario) */ 1577 .matches = { 1578 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1579 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1580 }, 1581 }, 1582 #endif 1583 { } 1584 }; 1585 1586 void __init synaptics_module_init(void) 1587 { 1588 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1589 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1590 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1591 } 1592 1593 static int synaptics_init_ps2(struct psmouse *psmouse, 1594 struct synaptics_device_info *info, 1595 bool absolute_mode) 1596 { 1597 struct synaptics_data *priv; 1598 int err; 1599 1600 synaptics_apply_quirks(psmouse, info); 1601 1602 psmouse->private = priv = kzalloc_obj(*priv); 1603 if (!priv) 1604 return -ENOMEM; 1605 1606 priv->info = *info; 1607 priv->absolute_mode = absolute_mode; 1608 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1609 priv->disable_gesture = true; 1610 1611 /* 1612 * Unfortunately ForcePad capability is not exported over PS/2, 1613 * so we have to resort to checking PNP IDs. 1614 */ 1615 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1616 1617 err = synaptics_set_mode(psmouse); 1618 if (err) { 1619 psmouse_err(psmouse, "Unable to initialize device.\n"); 1620 goto init_fail; 1621 } 1622 1623 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1624 SYN_NEWABS : SYN_OLDABS; 1625 1626 psmouse_info(psmouse, 1627 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1628 SYN_ID_MODEL(info->identity), 1629 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1630 info->model_id, 1631 info->capabilities, info->ext_cap, info->ext_cap_0c, 1632 info->ext_cap_10, info->board_id, info->firmware_id); 1633 1634 err = set_input_params(psmouse, priv); 1635 if (err) { 1636 psmouse_err(psmouse, 1637 "failed to set up capabilities: %d\n", err); 1638 goto init_fail; 1639 } 1640 1641 /* 1642 * Encode touchpad model so that it can be used to set 1643 * input device->id.version and be visible to userspace. 1644 * Because version is __u16 we have to drop something. 1645 * Hardware info bits seem to be good candidates as they 1646 * are documented to be for Synaptics corp. internal use. 1647 */ 1648 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1649 (info->model_id & 0x000000ff); 1650 1651 if (absolute_mode) { 1652 psmouse->protocol_handler = synaptics_process_byte; 1653 psmouse->pktsize = 6; 1654 } else { 1655 /* Relative mode follows standard PS/2 mouse protocol */ 1656 psmouse->protocol_handler = psmouse_process_byte; 1657 psmouse->pktsize = 3; 1658 } 1659 1660 psmouse->set_rate = synaptics_set_rate; 1661 psmouse->disconnect = synaptics_disconnect; 1662 psmouse->reconnect = synaptics_reconnect; 1663 psmouse->fast_reconnect = NULL; 1664 psmouse->cleanup = synaptics_reset; 1665 /* Synaptics can usually stay in sync without extra help */ 1666 psmouse->resync_time = 0; 1667 1668 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1669 synaptics_pt_create(psmouse); 1670 1671 /* 1672 * Toshiba's KBC seems to have trouble handling data from 1673 * Synaptics at full rate. Switch to a lower rate (roughly 1674 * the same rate as a standard PS/2 mouse). 1675 */ 1676 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1677 psmouse_info(psmouse, 1678 "Toshiba %s detected, limiting rate to 40pps.\n", 1679 dmi_get_system_info(DMI_PRODUCT_NAME)); 1680 psmouse->rate = 40; 1681 } 1682 1683 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1684 err = device_create_file(&psmouse->ps2dev.serio->dev, 1685 &psmouse_attr_disable_gesture.dattr); 1686 if (err) { 1687 psmouse_err(psmouse, 1688 "Failed to create disable_gesture attribute (%d)", 1689 err); 1690 goto init_fail; 1691 } 1692 } 1693 1694 return 0; 1695 1696 init_fail: 1697 kfree(priv); 1698 return err; 1699 } 1700 1701 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1702 { 1703 struct synaptics_device_info info; 1704 int error; 1705 1706 psmouse_reset(psmouse); 1707 1708 error = synaptics_query_hardware(psmouse, &info); 1709 if (error) { 1710 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1711 return error; 1712 } 1713 1714 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1715 } 1716 1717 int synaptics_init_absolute(struct psmouse *psmouse) 1718 { 1719 return __synaptics_init(psmouse, true); 1720 } 1721 1722 int synaptics_init_relative(struct psmouse *psmouse) 1723 { 1724 return __synaptics_init(psmouse, false); 1725 } 1726 1727 static int synaptics_setup_ps2(struct psmouse *psmouse, 1728 struct synaptics_device_info *info) 1729 { 1730 bool absolute_mode = true; 1731 int error; 1732 1733 /* 1734 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1735 * packet spew overloads the EC such that key presses on the keyboard 1736 * are missed. Given that, don't even attempt to use Absolute mode. 1737 * Relative mode seems to work just fine. 1738 */ 1739 if (broken_olpc_ec) { 1740 psmouse_info(psmouse, 1741 "OLPC XO detected, forcing relative protocol.\n"); 1742 absolute_mode = false; 1743 } 1744 1745 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1746 if (error) 1747 return error; 1748 1749 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1750 } 1751 1752 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1753 1754 void __init synaptics_module_init(void) 1755 { 1756 } 1757 1758 static int __maybe_unused 1759 synaptics_setup_ps2(struct psmouse *psmouse, 1760 struct synaptics_device_info *info) 1761 { 1762 return -ENOSYS; 1763 } 1764 1765 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1766 1767 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1768 1769 /* 1770 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1771 * provides a better bandwidth and allow a better control of the touchpads. 1772 * This is used to decide if we need to use this bus or not. 1773 */ 1774 enum { 1775 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1776 SYNAPTICS_INTERTOUCH_OFF, 1777 SYNAPTICS_INTERTOUCH_ON, 1778 }; 1779 1780 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1781 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1782 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1783 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1784 1785 static int synaptics_create_intertouch(struct psmouse *psmouse, 1786 struct synaptics_device_info *info, 1787 bool leave_breadcrumbs) 1788 { 1789 bool topbuttonpad = 1790 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1791 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1792 const struct rmi_device_platform_data pdata = { 1793 .reset_delay_ms = 30, 1794 .sensor_pdata = { 1795 .sensor_type = rmi_sensor_touchpad, 1796 .axis_align.flip_y = true, 1797 .kernel_tracking = false, 1798 .topbuttonpad = topbuttonpad, 1799 }, 1800 .gpio_data = { 1801 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1802 .trackstick_buttons = 1803 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1804 }, 1805 }; 1806 const struct i2c_board_info intertouch_board = { 1807 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1808 .flags = I2C_CLIENT_HOST_NOTIFY, 1809 }; 1810 1811 return psmouse_smbus_init(psmouse, &intertouch_board, 1812 &pdata, sizeof(pdata), true, 1813 leave_breadcrumbs); 1814 } 1815 1816 /* 1817 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1818 * and decides to instantiate a SMBus InterTouch device. 1819 */ 1820 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1821 struct synaptics_device_info *info, 1822 bool leave_breadcrumbs) 1823 { 1824 int error; 1825 1826 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1827 return -ENXIO; 1828 1829 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1830 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1831 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1832 1833 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1834 psmouse_info(psmouse, 1835 "Your touchpad (%s) says it can support a different bus. " 1836 "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n", 1837 psmouse->ps2dev.serio->firmware_id); 1838 1839 return -ENXIO; 1840 } 1841 } 1842 1843 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1844 1845 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1846 if (error) { 1847 if (error == -EAGAIN) 1848 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1849 else 1850 psmouse_err(psmouse, "unable to create intertouch device\n"); 1851 1852 return error; 1853 } 1854 1855 return 0; 1856 } 1857 1858 int synaptics_init_smbus(struct psmouse *psmouse) 1859 { 1860 struct synaptics_device_info info; 1861 int error; 1862 1863 psmouse_reset(psmouse); 1864 1865 error = synaptics_query_hardware(psmouse, &info); 1866 if (error) { 1867 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1868 return error; 1869 } 1870 1871 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1872 return -ENXIO; 1873 1874 return synaptics_create_intertouch(psmouse, &info, false); 1875 } 1876 1877 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1878 1879 static int __maybe_unused 1880 synaptics_setup_intertouch(struct psmouse *psmouse, 1881 struct synaptics_device_info *info, 1882 bool leave_breadcrumbs) 1883 { 1884 return -ENOSYS; 1885 } 1886 1887 int synaptics_init_smbus(struct psmouse *psmouse) 1888 { 1889 return -ENOSYS; 1890 } 1891 1892 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1893 1894 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1895 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1896 1897 int synaptics_init(struct psmouse *psmouse) 1898 { 1899 struct synaptics_device_info info; 1900 int error; 1901 int retval; 1902 1903 psmouse_reset(psmouse); 1904 1905 error = synaptics_query_hardware(psmouse, &info); 1906 if (error) { 1907 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1908 return error; 1909 } 1910 1911 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1912 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1913 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1914 /* Forcepads need F21, which is not ready */ 1915 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1916 psmouse_warn(psmouse, 1917 "The touchpad can support a better bus than the too old PS/2 protocol. " 1918 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1919 } 1920 1921 error = synaptics_setup_intertouch(psmouse, &info, true); 1922 if (!error) 1923 return PSMOUSE_SYNAPTICS_SMBUS; 1924 } 1925 1926 retval = synaptics_setup_ps2(psmouse, &info); 1927 if (retval < 0) { 1928 /* 1929 * Not using any flavor of Synaptics support, so clean up 1930 * SMbus breadcrumbs, if any. 1931 */ 1932 psmouse_smbus_cleanup(psmouse); 1933 } 1934 1935 return retval; 1936 } 1937 1938 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1939 1940 int synaptics_init(struct psmouse *psmouse) 1941 { 1942 return -ENOSYS; 1943 } 1944 1945 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1946