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