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