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