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