1 /* 2 * Synaptics TouchPad PS/2 mouse driver 3 * 4 * 2003 Dmitry Torokhov <dtor@mail.ru> 5 * Added support for pass-through port. Special thanks to Peter Berg Larsen 6 * for explaining various Synaptics quirks. 7 * 8 * 2003 Peter Osterlund <petero2@telia.com> 9 * Ported to 2.5 input device infrastructure. 10 * 11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 12 * start merging tpconfig and gpm code to a xfree-input module 13 * adding some changes and extensions (ex. 3rd and 4th button) 14 * 15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 17 * code for the special synaptics commands (from the tpconfig-source) 18 * 19 * This program is free software; you can redistribute it and/or modify it 20 * under the terms of the GNU General Public License version 2 as published by 21 * the Free Software Foundation. 22 * 23 * Trademarks are the property of their respective owners. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/delay.h> 28 #include <linux/dmi.h> 29 #include <linux/input/mt.h> 30 #include <linux/serio.h> 31 #include <linux/libps2.h> 32 #include <linux/rmi.h> 33 #include <linux/i2c.h> 34 #include <linux/slab.h> 35 #include "psmouse.h" 36 #include "synaptics.h" 37 38 /* 39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 40 * section 2.3.2, which says that they should be valid regardless of the 41 * actual size of the sensor. 42 * Note that newer firmware allows querying device for maximum useable 43 * coordinates. 44 */ 45 #define XMIN 0 46 #define XMAX 6143 47 #define YMIN 0 48 #define YMAX 6143 49 #define XMIN_NOMINAL 1472 50 #define XMAX_NOMINAL 5472 51 #define YMIN_NOMINAL 1408 52 #define YMAX_NOMINAL 4448 53 54 /* Size in bits of absolute position values reported by the hardware */ 55 #define ABS_POS_BITS 13 56 57 /* 58 * These values should represent the absolute maximum value that will 59 * be reported for a positive position value. Some Synaptics firmware 60 * uses this value to indicate a finger near the edge of the touchpad 61 * whose precise position cannot be determined. 62 * 63 * At least one touchpad is known to report positions in excess of this 64 * value which are actually negative values truncated to the 13-bit 65 * reporting range. These values have never been observed to be lower 66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 67 * negative and any other value as positive. 68 */ 69 #define X_MAX_POSITIVE 8176 70 #define Y_MAX_POSITIVE 8176 71 72 /* maximum ABS_MT_POSITION displacement (in mm) */ 73 #define DMAX 10 74 75 /***************************************************************************** 76 * Stuff we need even when we do not want native Synaptics support 77 ****************************************************************************/ 78 79 /* 80 * Set the synaptics touchpad mode byte by special commands 81 */ 82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode) 83 { 84 u8 param[1]; 85 int error; 86 87 error = ps2_sliced_command(&psmouse->ps2dev, mode); 88 if (error) 89 return error; 90 91 param[0] = SYN_PS_SET_MODE2; 92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); 93 if (error) 94 return error; 95 96 return 0; 97 } 98 99 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 100 { 101 struct ps2dev *ps2dev = &psmouse->ps2dev; 102 u8 param[4] = { 0 }; 103 104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 105 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 108 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 109 110 if (param[1] != 0x47) 111 return -ENODEV; 112 113 if (set_properties) { 114 psmouse->vendor = "Synaptics"; 115 psmouse->name = "TouchPad"; 116 } 117 118 return 0; 119 } 120 121 void synaptics_reset(struct psmouse *psmouse) 122 { 123 /* reset touchpad back to relative mode, gestures enabled */ 124 synaptics_mode_cmd(psmouse, 0); 125 } 126 127 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 128 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 129 130 /* This list has been kindly provided by Synaptics. */ 131 static const char * const topbuttonpad_pnp_ids[] = { 132 "LEN0017", 133 "LEN0018", 134 "LEN0019", 135 "LEN0023", 136 "LEN002A", 137 "LEN002B", 138 "LEN002C", 139 "LEN002D", 140 "LEN002E", 141 "LEN0033", /* Helix */ 142 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 143 "LEN0035", /* X240 */ 144 "LEN0036", /* T440 */ 145 "LEN0037", /* X1 Carbon 2nd */ 146 "LEN0038", 147 "LEN0039", /* T440s */ 148 "LEN0041", 149 "LEN0042", /* Yoga */ 150 "LEN0045", 151 "LEN0047", 152 "LEN0049", 153 "LEN2000", /* S540 */ 154 "LEN2001", /* Edge E431 */ 155 "LEN2002", /* Edge E531 */ 156 "LEN2003", 157 "LEN2004", /* L440 */ 158 "LEN2005", 159 "LEN2006", /* Edge E440/E540 */ 160 "LEN2007", 161 "LEN2008", 162 "LEN2009", 163 "LEN200A", 164 "LEN200B", 165 NULL 166 }; 167 168 static const char * const smbus_pnp_ids[] = { 169 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ 170 "LEN0048", /* X1 Carbon 3 */ 171 "LEN0046", /* X250 */ 172 "LEN004a", /* W541 */ 173 "LEN005b", /* P50 */ 174 "LEN005e", /* T560 */ 175 "LEN0071", /* T480 */ 176 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ 177 "LEN0073", /* X1 Carbon G5 (Elantech) */ 178 "LEN0092", /* X1 Carbon 6 */ 179 "LEN0096", /* X280 */ 180 "LEN0097", /* X280 -> ALPS trackpoint */ 181 "LEN200f", /* T450s */ 182 "SYN3052", /* HP EliteBook 840 G4 */ 183 "SYN3221", /* HP 15-ay000 */ 184 NULL 185 }; 186 187 static const char * const forcepad_pnp_ids[] = { 188 "SYN300D", 189 "SYN3014", 190 NULL 191 }; 192 193 /* 194 * Send a command to the synpatics touchpad by special commands 195 */ 196 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 197 { 198 int error; 199 200 error = ps2_sliced_command(&psmouse->ps2dev, cmd); 201 if (error) 202 return error; 203 204 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 205 if (error) 206 return error; 207 208 return 0; 209 } 210 211 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 212 { 213 int error; 214 union { 215 __be32 be_val; 216 char buf[4]; 217 } resp = { 0 }; 218 219 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 220 if (error) 221 return error; 222 223 *val = be32_to_cpu(resp.be_val); 224 return 0; 225 } 226 227 /* 228 * Identify Touchpad 229 * See also the SYN_ID_* macros 230 */ 231 static int synaptics_identify(struct psmouse *psmouse, 232 struct synaptics_device_info *info) 233 { 234 int error; 235 236 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 237 if (error) 238 return error; 239 240 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 241 } 242 243 /* 244 * Read the model-id bytes from the touchpad 245 * see also SYN_MODEL_* macros 246 */ 247 static int synaptics_model_id(struct psmouse *psmouse, 248 struct synaptics_device_info *info) 249 { 250 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 251 } 252 253 /* 254 * Read the firmware id from the touchpad 255 */ 256 static int synaptics_firmware_id(struct psmouse *psmouse, 257 struct synaptics_device_info *info) 258 { 259 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 260 &info->firmware_id); 261 } 262 263 /* 264 * Read the board id and the "More Extended Queries" from the touchpad 265 * The board id is encoded in the "QUERY MODES" response 266 */ 267 static int synaptics_query_modes(struct psmouse *psmouse, 268 struct synaptics_device_info *info) 269 { 270 u8 bid[3]; 271 int error; 272 273 /* firmwares prior 7.5 have no board_id encoded */ 274 if (SYN_ID_FULL(info->identity) < 0x705) 275 return 0; 276 277 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 278 if (error) 279 return error; 280 281 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 282 283 if (SYN_MEXT_CAP_BIT(bid[0])) 284 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 285 &info->ext_cap_10); 286 287 return 0; 288 } 289 290 /* 291 * Read the capability-bits from the touchpad 292 * see also the SYN_CAP_* macros 293 */ 294 static int synaptics_capability(struct psmouse *psmouse, 295 struct synaptics_device_info *info) 296 { 297 int error; 298 299 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 300 &info->capabilities); 301 if (error) 302 return error; 303 304 info->ext_cap = info->ext_cap_0c = 0; 305 306 /* 307 * Older firmwares had submodel ID fixed to 0x47 308 */ 309 if (SYN_ID_FULL(info->identity) < 0x705 && 310 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 311 return -ENXIO; 312 } 313 314 /* 315 * Unless capExtended is set the rest of the flags should be ignored 316 */ 317 if (!SYN_CAP_EXTENDED(info->capabilities)) 318 info->capabilities = 0; 319 320 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 321 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 322 &info->ext_cap); 323 if (error) { 324 psmouse_warn(psmouse, 325 "device claims to have extended capabilities, but I'm not able to read them.\n"); 326 } else { 327 /* 328 * if nExtBtn is greater than 8 it should be considered 329 * invalid and treated as 0 330 */ 331 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 332 info->ext_cap &= ~SYN_CAP_MB_MASK; 333 } 334 } 335 336 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 337 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 338 &info->ext_cap_0c); 339 if (error) 340 psmouse_warn(psmouse, 341 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 342 } 343 344 return 0; 345 } 346 347 /* 348 * Read touchpad resolution and maximum reported coordinates 349 * Resolution is left zero if touchpad does not support the query 350 */ 351 static int synaptics_resolution(struct psmouse *psmouse, 352 struct synaptics_device_info *info) 353 { 354 u8 resp[3]; 355 int error; 356 357 if (SYN_ID_MAJOR(info->identity) < 4) 358 return 0; 359 360 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 361 if (!error) { 362 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 363 info->x_res = resp[0]; /* x resolution in units/mm */ 364 info->y_res = resp[2]; /* y resolution in units/mm */ 365 } 366 } 367 368 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 369 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 370 error = synaptics_send_cmd(psmouse, 371 SYN_QUE_EXT_MAX_COORDS, resp); 372 if (error) { 373 psmouse_warn(psmouse, 374 "device claims to have max coordinates query, but I'm not able to read it.\n"); 375 } else { 376 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 377 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 378 psmouse_info(psmouse, 379 "queried max coordinates: x [..%d], y [..%d]\n", 380 info->x_max, info->y_max); 381 } 382 } 383 384 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 385 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 386 /* 387 * Firmware v8.1 does not report proper number of extended 388 * capabilities, but has been proven to report correct min 389 * coordinates. 390 */ 391 SYN_ID_FULL(info->identity) == 0x801)) { 392 error = synaptics_send_cmd(psmouse, 393 SYN_QUE_EXT_MIN_COORDS, resp); 394 if (error) { 395 psmouse_warn(psmouse, 396 "device claims to have min coordinates query, but I'm not able to read it.\n"); 397 } else { 398 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 399 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 400 psmouse_info(psmouse, 401 "queried min coordinates: x [%d..], y [%d..]\n", 402 info->x_min, info->y_min); 403 } 404 } 405 406 return 0; 407 } 408 409 static int synaptics_query_hardware(struct psmouse *psmouse, 410 struct synaptics_device_info *info) 411 { 412 int error; 413 414 memset(info, 0, sizeof(*info)); 415 416 error = synaptics_identify(psmouse, info); 417 if (error) 418 return error; 419 420 error = synaptics_model_id(psmouse, info); 421 if (error) 422 return error; 423 424 error = synaptics_firmware_id(psmouse, info); 425 if (error) 426 return error; 427 428 error = synaptics_query_modes(psmouse, info); 429 if (error) 430 return error; 431 432 error = synaptics_capability(psmouse, info); 433 if (error) 434 return error; 435 436 error = synaptics_resolution(psmouse, info); 437 if (error) 438 return error; 439 440 return 0; 441 } 442 443 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 444 445 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 446 447 static bool cr48_profile_sensor; 448 449 #define ANY_BOARD_ID 0 450 struct min_max_quirk { 451 const char * const *pnp_ids; 452 struct { 453 u32 min, max; 454 } board_id; 455 u32 x_min, x_max, y_min, y_max; 456 }; 457 458 static const struct min_max_quirk min_max_pnpid_table[] = { 459 { 460 (const char * const []){"LEN0033", NULL}, 461 {ANY_BOARD_ID, ANY_BOARD_ID}, 462 1024, 5052, 2258, 4832 463 }, 464 { 465 (const char * const []){"LEN0042", NULL}, 466 {ANY_BOARD_ID, ANY_BOARD_ID}, 467 1232, 5710, 1156, 4696 468 }, 469 { 470 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 471 "LEN0039", "LEN2002", "LEN2004", 472 NULL}, 473 {ANY_BOARD_ID, 2961}, 474 1024, 5112, 2024, 4832 475 }, 476 { 477 (const char * const []){"LEN2000", NULL}, 478 {ANY_BOARD_ID, ANY_BOARD_ID}, 479 1024, 5113, 2021, 4832 480 }, 481 { 482 (const char * const []){"LEN2001", NULL}, 483 {ANY_BOARD_ID, ANY_BOARD_ID}, 484 1024, 5022, 2508, 4832 485 }, 486 { 487 (const char * const []){"LEN2006", NULL}, 488 {2691, 2691}, 489 1024, 5045, 2457, 4832 490 }, 491 { 492 (const char * const []){"LEN2006", NULL}, 493 {ANY_BOARD_ID, ANY_BOARD_ID}, 494 1264, 5675, 1171, 4688 495 }, 496 { } 497 }; 498 499 /***************************************************************************** 500 * Synaptics communications functions 501 ****************************************************************************/ 502 503 /* 504 * Synaptics touchpads report the y coordinate from bottom to top, which is 505 * opposite from what userspace expects. 506 * This function is used to invert y before reporting. 507 */ 508 static int synaptics_invert_y(int y) 509 { 510 return YMAX_NOMINAL + YMIN_NOMINAL - y; 511 } 512 513 /* 514 * Apply quirk(s) if the hardware matches 515 */ 516 static void synaptics_apply_quirks(struct psmouse *psmouse, 517 struct synaptics_device_info *info) 518 { 519 int i; 520 521 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 522 if (!psmouse_matches_pnp_id(psmouse, 523 min_max_pnpid_table[i].pnp_ids)) 524 continue; 525 526 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 527 info->board_id < min_max_pnpid_table[i].board_id.min) 528 continue; 529 530 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 531 info->board_id > min_max_pnpid_table[i].board_id.max) 532 continue; 533 534 info->x_min = min_max_pnpid_table[i].x_min; 535 info->x_max = min_max_pnpid_table[i].x_max; 536 info->y_min = min_max_pnpid_table[i].y_min; 537 info->y_max = min_max_pnpid_table[i].y_max; 538 psmouse_info(psmouse, 539 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 540 info->x_min, info->x_max, 541 info->y_min, info->y_max); 542 break; 543 } 544 } 545 546 static bool synaptics_has_agm(struct synaptics_data *priv) 547 { 548 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 549 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); 550 } 551 552 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 553 { 554 static u8 param = 0xc8; 555 int error; 556 557 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); 558 if (error) 559 return error; 560 561 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 562 if (error) 563 return error; 564 565 return 0; 566 } 567 568 static int synaptics_set_mode(struct psmouse *psmouse) 569 { 570 struct synaptics_data *priv = psmouse->private; 571 int error; 572 573 priv->mode = 0; 574 if (priv->absolute_mode) 575 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 576 if (priv->disable_gesture) 577 priv->mode |= SYN_BIT_DISABLE_GESTURE; 578 if (psmouse->rate >= 80) 579 priv->mode |= SYN_BIT_HIGH_RATE; 580 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 581 priv->mode |= SYN_BIT_W_MODE; 582 583 error = synaptics_mode_cmd(psmouse, priv->mode); 584 if (error) 585 return error; 586 587 if (priv->absolute_mode && synaptics_has_agm(priv)) { 588 error = synaptics_set_advanced_gesture_mode(psmouse); 589 if (error) { 590 psmouse_err(psmouse, 591 "Advanced gesture mode init failed: %d\n", 592 error); 593 return error; 594 } 595 } 596 597 return 0; 598 } 599 600 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 601 { 602 struct synaptics_data *priv = psmouse->private; 603 604 if (rate >= 80) { 605 priv->mode |= SYN_BIT_HIGH_RATE; 606 psmouse->rate = 80; 607 } else { 608 priv->mode &= ~SYN_BIT_HIGH_RATE; 609 psmouse->rate = 40; 610 } 611 612 synaptics_mode_cmd(psmouse, priv->mode); 613 } 614 615 /***************************************************************************** 616 * Synaptics pass-through PS/2 port support 617 ****************************************************************************/ 618 static int synaptics_pt_write(struct serio *serio, u8 c) 619 { 620 struct psmouse *parent = serio_get_drvdata(serio->parent); 621 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 622 int error; 623 624 error = ps2_sliced_command(&parent->ps2dev, c); 625 if (error) 626 return error; 627 628 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 629 if (error) 630 return error; 631 632 return 0; 633 } 634 635 static int synaptics_pt_start(struct serio *serio) 636 { 637 struct psmouse *parent = serio_get_drvdata(serio->parent); 638 struct synaptics_data *priv = parent->private; 639 640 serio_pause_rx(parent->ps2dev.serio); 641 priv->pt_port = serio; 642 serio_continue_rx(parent->ps2dev.serio); 643 644 return 0; 645 } 646 647 static void synaptics_pt_stop(struct serio *serio) 648 { 649 struct psmouse *parent = serio_get_drvdata(serio->parent); 650 struct synaptics_data *priv = parent->private; 651 652 serio_pause_rx(parent->ps2dev.serio); 653 priv->pt_port = NULL; 654 serio_continue_rx(parent->ps2dev.serio); 655 } 656 657 static int synaptics_is_pt_packet(u8 *buf) 658 { 659 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 660 } 661 662 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet) 663 { 664 struct psmouse *child = serio_get_drvdata(ptport); 665 666 if (child && child->state == PSMOUSE_ACTIVATED) { 667 serio_interrupt(ptport, packet[1], 0); 668 serio_interrupt(ptport, packet[4], 0); 669 serio_interrupt(ptport, packet[5], 0); 670 if (child->pktsize == 4) 671 serio_interrupt(ptport, packet[2], 0); 672 } else { 673 serio_interrupt(ptport, packet[1], 0); 674 } 675 } 676 677 static void synaptics_pt_activate(struct psmouse *psmouse) 678 { 679 struct synaptics_data *priv = psmouse->private; 680 struct psmouse *child = serio_get_drvdata(priv->pt_port); 681 682 /* adjust the touchpad to child's choice of protocol */ 683 if (child) { 684 if (child->pktsize == 4) 685 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 686 else 687 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 688 689 if (synaptics_mode_cmd(psmouse, priv->mode)) 690 psmouse_warn(psmouse, 691 "failed to switch guest protocol\n"); 692 } 693 } 694 695 static void synaptics_pt_create(struct psmouse *psmouse) 696 { 697 struct serio *serio; 698 699 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 700 if (!serio) { 701 psmouse_err(psmouse, 702 "not enough memory for pass-through port\n"); 703 return; 704 } 705 706 serio->id.type = SERIO_PS_PSTHRU; 707 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 708 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 709 serio->write = synaptics_pt_write; 710 serio->start = synaptics_pt_start; 711 serio->stop = synaptics_pt_stop; 712 serio->parent = psmouse->ps2dev.serio; 713 714 psmouse->pt_activate = synaptics_pt_activate; 715 716 psmouse_info(psmouse, "serio: %s port at %s\n", 717 serio->name, psmouse->phys); 718 serio_register_port(serio); 719 } 720 721 /***************************************************************************** 722 * Functions to interpret the absolute mode packets 723 ****************************************************************************/ 724 725 static void synaptics_parse_agm(const u8 buf[], 726 struct synaptics_data *priv, 727 struct synaptics_hw_state *hw) 728 { 729 struct synaptics_hw_state *agm = &priv->agm; 730 int agm_packet_type; 731 732 agm_packet_type = (buf[5] & 0x30) >> 4; 733 switch (agm_packet_type) { 734 case 1: 735 /* Gesture packet: (x, y, z) half resolution */ 736 agm->w = hw->w; 737 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 738 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 739 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 740 break; 741 742 case 2: 743 /* AGM-CONTACT packet: we are only interested in the count */ 744 priv->agm_count = buf[1]; 745 break; 746 747 default: 748 break; 749 } 750 } 751 752 static void synaptics_parse_ext_buttons(const u8 buf[], 753 struct synaptics_data *priv, 754 struct synaptics_hw_state *hw) 755 { 756 unsigned int ext_bits = 757 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 758 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 759 760 hw->ext_buttons = buf[4] & ext_mask; 761 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 762 } 763 764 static int synaptics_parse_hw_state(const u8 buf[], 765 struct synaptics_data *priv, 766 struct synaptics_hw_state *hw) 767 { 768 memset(hw, 0, sizeof(struct synaptics_hw_state)); 769 770 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 771 hw->w = (((buf[0] & 0x30) >> 2) | 772 ((buf[0] & 0x04) >> 1) | 773 ((buf[3] & 0x04) >> 2)); 774 775 if (synaptics_has_agm(priv) && hw->w == 2) { 776 synaptics_parse_agm(buf, priv, hw); 777 return 1; 778 } 779 780 hw->x = (((buf[3] & 0x10) << 8) | 781 ((buf[1] & 0x0f) << 8) | 782 buf[4]); 783 hw->y = (((buf[3] & 0x20) << 7) | 784 ((buf[1] & 0xf0) << 4) | 785 buf[5]); 786 hw->z = buf[2]; 787 788 hw->left = (buf[0] & 0x01) ? 1 : 0; 789 hw->right = (buf[0] & 0x02) ? 1 : 0; 790 791 if (priv->is_forcepad) { 792 /* 793 * ForcePads, like Clickpads, use middle button 794 * bits to report primary button clicks. 795 * Unfortunately they report primary button not 796 * only when user presses on the pad above certain 797 * threshold, but also when there are more than one 798 * finger on the touchpad, which interferes with 799 * out multi-finger gestures. 800 */ 801 if (hw->z == 0) { 802 /* No contacts */ 803 priv->press = priv->report_press = false; 804 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 805 /* 806 * Single-finger touch with pressure above 807 * the threshold. If pressure stays long 808 * enough, we'll start reporting primary 809 * button. We rely on the device continuing 810 * sending data even if finger does not 811 * move. 812 */ 813 if (!priv->press) { 814 priv->press_start = jiffies; 815 priv->press = true; 816 } else if (time_after(jiffies, 817 priv->press_start + 818 msecs_to_jiffies(50))) { 819 priv->report_press = true; 820 } 821 } else { 822 priv->press = false; 823 } 824 825 hw->left = priv->report_press; 826 827 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 828 /* 829 * Clickpad's button is transmitted as middle button, 830 * however, since it is primary button, we will report 831 * it as BTN_LEFT. 832 */ 833 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 834 835 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 836 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 837 if (hw->w == 2) 838 hw->scroll = (s8)buf[1]; 839 } 840 841 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 842 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 843 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 844 } 845 846 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 847 ((buf[0] ^ buf[3]) & 0x02)) { 848 synaptics_parse_ext_buttons(buf, priv, hw); 849 } 850 } else { 851 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 852 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 853 854 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 855 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 856 857 hw->left = (buf[0] & 0x01) ? 1 : 0; 858 hw->right = (buf[0] & 0x02) ? 1 : 0; 859 } 860 861 /* 862 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 863 * is used by some firmware to indicate a finger at the edge of 864 * the touchpad whose precise position cannot be determined, so 865 * convert these values to the maximum axis value. 866 */ 867 if (hw->x > X_MAX_POSITIVE) 868 hw->x -= 1 << ABS_POS_BITS; 869 else if (hw->x == X_MAX_POSITIVE) 870 hw->x = XMAX; 871 872 if (hw->y > Y_MAX_POSITIVE) 873 hw->y -= 1 << ABS_POS_BITS; 874 else if (hw->y == Y_MAX_POSITIVE) 875 hw->y = YMAX; 876 877 return 0; 878 } 879 880 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 881 bool active, int x, int y) 882 { 883 input_mt_slot(dev, slot); 884 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 885 if (active) { 886 input_report_abs(dev, ABS_MT_POSITION_X, x); 887 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 888 } 889 } 890 891 static void synaptics_report_semi_mt_data(struct input_dev *dev, 892 const struct synaptics_hw_state *a, 893 const struct synaptics_hw_state *b, 894 int num_fingers) 895 { 896 if (num_fingers >= 2) { 897 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 898 min(a->y, b->y)); 899 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 900 max(a->y, b->y)); 901 } else if (num_fingers == 1) { 902 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 903 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 904 } else { 905 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 906 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 907 } 908 } 909 910 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 911 const struct synaptics_hw_state *hw) 912 { 913 struct input_dev *dev = psmouse->dev; 914 struct synaptics_data *priv = psmouse->private; 915 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 916 int i; 917 918 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 919 return; 920 921 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 922 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 923 SYN_ID_FULL(priv->info.identity) == 0x802) && 924 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 925 return; 926 927 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 928 for (i = 0; i < ext_bits; i++) { 929 input_report_key(dev, BTN_0 + 2 * i, 930 hw->ext_buttons & BIT(i)); 931 input_report_key(dev, BTN_1 + 2 * i, 932 hw->ext_buttons & BIT(i + ext_bits)); 933 } 934 return; 935 } 936 937 /* 938 * This generation of touchpads has the trackstick buttons 939 * physically wired to the touchpad. Re-route them through 940 * the pass-through interface. 941 */ 942 if (priv->pt_port) { 943 u8 pt_buttons; 944 945 /* The trackstick expects at most 3 buttons */ 946 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 947 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 948 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 949 950 serio_interrupt(priv->pt_port, 951 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 952 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 953 } 954 } 955 956 static void synaptics_report_buttons(struct psmouse *psmouse, 957 const struct synaptics_hw_state *hw) 958 { 959 struct input_dev *dev = psmouse->dev; 960 struct synaptics_data *priv = psmouse->private; 961 962 input_report_key(dev, BTN_LEFT, hw->left); 963 input_report_key(dev, BTN_RIGHT, hw->right); 964 965 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 966 input_report_key(dev, BTN_MIDDLE, hw->middle); 967 968 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 969 input_report_key(dev, BTN_FORWARD, hw->up); 970 input_report_key(dev, BTN_BACK, hw->down); 971 } 972 973 synaptics_report_ext_buttons(psmouse, hw); 974 } 975 976 static void synaptics_report_mt_data(struct psmouse *psmouse, 977 const struct synaptics_hw_state *sgm, 978 int num_fingers) 979 { 980 struct input_dev *dev = psmouse->dev; 981 struct synaptics_data *priv = psmouse->private; 982 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 983 struct input_mt_pos pos[2]; 984 int slot[2], nsemi, i; 985 986 nsemi = clamp_val(num_fingers, 0, 2); 987 988 for (i = 0; i < nsemi; i++) { 989 pos[i].x = hw[i]->x; 990 pos[i].y = synaptics_invert_y(hw[i]->y); 991 } 992 993 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 994 995 for (i = 0; i < nsemi; i++) { 996 input_mt_slot(dev, slot[i]); 997 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 998 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 999 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 1000 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 1001 } 1002 1003 input_mt_drop_unused(dev); 1004 1005 /* Don't use active slot count to generate BTN_TOOL events. */ 1006 input_mt_report_pointer_emulation(dev, false); 1007 1008 /* Send the number of fingers reported by touchpad itself. */ 1009 input_mt_report_finger_count(dev, num_fingers); 1010 1011 synaptics_report_buttons(psmouse, sgm); 1012 1013 input_sync(dev); 1014 } 1015 1016 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1017 struct synaptics_hw_state *sgm) 1018 { 1019 struct synaptics_data *priv = psmouse->private; 1020 int num_fingers; 1021 1022 /* 1023 * Update mt_state using the new finger count and current mt_state. 1024 */ 1025 if (sgm->z == 0) 1026 num_fingers = 0; 1027 else if (sgm->w >= 4) 1028 num_fingers = 1; 1029 else if (sgm->w == 0) 1030 num_fingers = 2; 1031 else if (sgm->w == 1) 1032 num_fingers = priv->agm_count ? priv->agm_count : 3; 1033 else 1034 num_fingers = 4; 1035 1036 /* Send resulting input events to user space */ 1037 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1038 } 1039 1040 static bool synaptics_has_multifinger(struct synaptics_data *priv) 1041 { 1042 if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) 1043 return true; 1044 1045 /* Advanced gesture mode also sends multi finger data */ 1046 return synaptics_has_agm(priv); 1047 } 1048 1049 /* 1050 * called for each full received packet from the touchpad 1051 */ 1052 static void synaptics_process_packet(struct psmouse *psmouse) 1053 { 1054 struct input_dev *dev = psmouse->dev; 1055 struct synaptics_data *priv = psmouse->private; 1056 struct synaptics_device_info *info = &priv->info; 1057 struct synaptics_hw_state hw; 1058 int num_fingers; 1059 int finger_width; 1060 1061 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1062 return; 1063 1064 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1065 synaptics_image_sensor_process(psmouse, &hw); 1066 return; 1067 } 1068 1069 if (hw.scroll) { 1070 priv->scroll += hw.scroll; 1071 1072 while (priv->scroll >= 4) { 1073 input_report_key(dev, BTN_BACK, !hw.down); 1074 input_sync(dev); 1075 input_report_key(dev, BTN_BACK, hw.down); 1076 input_sync(dev); 1077 priv->scroll -= 4; 1078 } 1079 while (priv->scroll <= -4) { 1080 input_report_key(dev, BTN_FORWARD, !hw.up); 1081 input_sync(dev); 1082 input_report_key(dev, BTN_FORWARD, hw.up); 1083 input_sync(dev); 1084 priv->scroll += 4; 1085 } 1086 return; 1087 } 1088 1089 if (hw.z > 0 && hw.x > 1) { 1090 num_fingers = 1; 1091 finger_width = 5; 1092 if (SYN_CAP_EXTENDED(info->capabilities)) { 1093 switch (hw.w) { 1094 case 0 ... 1: 1095 if (synaptics_has_multifinger(priv)) 1096 num_fingers = hw.w + 2; 1097 break; 1098 case 2: 1099 if (SYN_MODEL_PEN(info->model_id)) 1100 ; /* Nothing, treat a pen as a single finger */ 1101 break; 1102 case 4 ... 15: 1103 if (SYN_CAP_PALMDETECT(info->capabilities)) 1104 finger_width = hw.w; 1105 break; 1106 } 1107 } 1108 } else { 1109 num_fingers = 0; 1110 finger_width = 0; 1111 } 1112 1113 if (cr48_profile_sensor) { 1114 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1115 return; 1116 } 1117 1118 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1119 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1120 num_fingers); 1121 1122 /* Post events 1123 * BTN_TOUCH has to be first as mousedev relies on it when doing 1124 * absolute -> relative conversion 1125 */ 1126 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1127 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1128 1129 if (num_fingers > 0) { 1130 input_report_abs(dev, ABS_X, hw.x); 1131 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1132 } 1133 input_report_abs(dev, ABS_PRESSURE, hw.z); 1134 1135 if (SYN_CAP_PALMDETECT(info->capabilities)) 1136 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1137 1138 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1139 if (synaptics_has_multifinger(priv)) { 1140 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1141 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1142 } 1143 1144 synaptics_report_buttons(psmouse, &hw); 1145 1146 input_sync(dev); 1147 } 1148 1149 static bool synaptics_validate_byte(struct psmouse *psmouse, 1150 int idx, enum synaptics_pkt_type pkt_type) 1151 { 1152 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1153 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1154 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1155 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1156 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1157 const u8 *packet = psmouse->packet; 1158 1159 if (idx < 0 || idx > 4) 1160 return false; 1161 1162 switch (pkt_type) { 1163 1164 case SYN_NEWABS: 1165 case SYN_NEWABS_RELAXED: 1166 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1167 1168 case SYN_NEWABS_STRICT: 1169 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1170 1171 case SYN_OLDABS: 1172 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1173 1174 default: 1175 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1176 return false; 1177 } 1178 } 1179 1180 static enum synaptics_pkt_type 1181 synaptics_detect_pkt_type(struct psmouse *psmouse) 1182 { 1183 int i; 1184 1185 for (i = 0; i < 5; i++) { 1186 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1187 psmouse_info(psmouse, "using relaxed packet validation\n"); 1188 return SYN_NEWABS_RELAXED; 1189 } 1190 } 1191 1192 return SYN_NEWABS_STRICT; 1193 } 1194 1195 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1196 { 1197 struct synaptics_data *priv = psmouse->private; 1198 1199 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1200 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1201 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1202 1203 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1204 synaptics_is_pt_packet(psmouse->packet)) { 1205 if (priv->pt_port) 1206 synaptics_pass_pt_packet(priv->pt_port, 1207 psmouse->packet); 1208 } else 1209 synaptics_process_packet(psmouse); 1210 1211 return PSMOUSE_FULL_PACKET; 1212 } 1213 1214 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1215 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1216 } 1217 1218 /***************************************************************************** 1219 * Driver initialization/cleanup functions 1220 ****************************************************************************/ 1221 static void set_abs_position_params(struct input_dev *dev, 1222 struct synaptics_device_info *info, 1223 int x_code, int y_code) 1224 { 1225 int x_min = info->x_min ?: XMIN_NOMINAL; 1226 int x_max = info->x_max ?: XMAX_NOMINAL; 1227 int y_min = info->y_min ?: YMIN_NOMINAL; 1228 int y_max = info->y_max ?: YMAX_NOMINAL; 1229 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1230 SYN_REDUCED_FILTER_FUZZ : 0; 1231 1232 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1233 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1234 input_abs_set_res(dev, x_code, info->x_res); 1235 input_abs_set_res(dev, y_code, info->y_res); 1236 } 1237 1238 static int set_input_params(struct psmouse *psmouse, 1239 struct synaptics_data *priv) 1240 { 1241 struct input_dev *dev = psmouse->dev; 1242 struct synaptics_device_info *info = &priv->info; 1243 int i; 1244 int error; 1245 1246 /* Reset default psmouse capabilities */ 1247 __clear_bit(EV_REL, dev->evbit); 1248 bitmap_zero(dev->relbit, REL_CNT); 1249 bitmap_zero(dev->keybit, KEY_CNT); 1250 1251 /* Things that apply to both modes */ 1252 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1253 1254 input_set_capability(dev, EV_KEY, BTN_LEFT); 1255 1256 /* Clickpads report only left button */ 1257 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1258 input_set_capability(dev, EV_KEY, BTN_RIGHT); 1259 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1260 input_set_capability(dev, EV_KEY, BTN_MIDDLE); 1261 } 1262 1263 if (!priv->absolute_mode) { 1264 /* Relative mode */ 1265 input_set_capability(dev, EV_REL, REL_X); 1266 input_set_capability(dev, EV_REL, REL_Y); 1267 return 0; 1268 } 1269 1270 /* Absolute mode */ 1271 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1272 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1273 1274 if (cr48_profile_sensor) 1275 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1276 1277 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1278 set_abs_position_params(dev, info, 1279 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1280 /* Image sensors can report per-contact pressure */ 1281 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1282 1283 error = input_mt_init_slots(dev, 2, 1284 INPUT_MT_POINTER | INPUT_MT_TRACK); 1285 if (error) 1286 return error; 1287 1288 /* Image sensors can signal 4 and 5 finger clicks */ 1289 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); 1290 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); 1291 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1292 set_abs_position_params(dev, info, 1293 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1294 /* 1295 * Profile sensor in CR-48 tracks contacts reasonably well, 1296 * other non-image sensors with AGM use semi-mt. 1297 */ 1298 error = input_mt_init_slots(dev, 2, 1299 INPUT_MT_POINTER | 1300 (cr48_profile_sensor ? 1301 INPUT_MT_TRACK : 1302 INPUT_MT_SEMI_MT)); 1303 if (error) 1304 return error; 1305 1306 /* 1307 * For semi-mt devices we send ABS_X/Y ourselves instead of 1308 * input_mt_report_pointer_emulation. But 1309 * input_mt_init_slots() resets the fuzz to 0, leading to a 1310 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X 1311 * position. Let's re-initialize ABS_X/Y here. 1312 */ 1313 if (!cr48_profile_sensor) 1314 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1315 } 1316 1317 if (SYN_CAP_PALMDETECT(info->capabilities)) 1318 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1319 1320 input_set_capability(dev, EV_KEY, BTN_TOUCH); 1321 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); 1322 1323 if (synaptics_has_multifinger(priv)) { 1324 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); 1325 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); 1326 } 1327 1328 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1329 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1330 input_set_capability(dev, EV_KEY, BTN_FORWARD); 1331 input_set_capability(dev, EV_KEY, BTN_BACK); 1332 } 1333 1334 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1335 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1336 input_set_capability(dev, EV_KEY, BTN_0 + i); 1337 1338 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1339 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1340 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1341 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1342 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1343 } 1344 1345 return 0; 1346 } 1347 1348 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1349 void *data, char *buf) 1350 { 1351 struct synaptics_data *priv = psmouse->private; 1352 1353 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1354 } 1355 1356 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1357 void *data, const char *buf, 1358 size_t len) 1359 { 1360 struct synaptics_data *priv = psmouse->private; 1361 unsigned int value; 1362 int err; 1363 1364 err = kstrtouint(buf, 10, &value); 1365 if (err) 1366 return err; 1367 1368 if (value > 1) 1369 return -EINVAL; 1370 1371 if (value == priv->disable_gesture) 1372 return len; 1373 1374 priv->disable_gesture = value; 1375 if (value) 1376 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1377 else 1378 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1379 1380 if (synaptics_mode_cmd(psmouse, priv->mode)) 1381 return -EIO; 1382 1383 return len; 1384 } 1385 1386 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1387 synaptics_show_disable_gesture, 1388 synaptics_set_disable_gesture); 1389 1390 static void synaptics_disconnect(struct psmouse *psmouse) 1391 { 1392 struct synaptics_data *priv = psmouse->private; 1393 1394 /* 1395 * We might have left a breadcrumb when trying to 1396 * set up SMbus companion. 1397 */ 1398 psmouse_smbus_cleanup(psmouse); 1399 1400 if (!priv->absolute_mode && 1401 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1402 device_remove_file(&psmouse->ps2dev.serio->dev, 1403 &psmouse_attr_disable_gesture.dattr); 1404 1405 synaptics_reset(psmouse); 1406 kfree(priv); 1407 psmouse->private = NULL; 1408 } 1409 1410 static int synaptics_reconnect(struct psmouse *psmouse) 1411 { 1412 struct synaptics_data *priv = psmouse->private; 1413 struct synaptics_device_info info; 1414 u8 param[2]; 1415 int retry = 0; 1416 int error; 1417 1418 do { 1419 psmouse_reset(psmouse); 1420 if (retry) { 1421 /* 1422 * On some boxes, right after resuming, the touchpad 1423 * needs some time to finish initializing (I assume 1424 * it needs time to calibrate) and start responding 1425 * to Synaptics-specific queries, so let's wait a 1426 * bit. 1427 */ 1428 ssleep(1); 1429 } 1430 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1431 error = synaptics_detect(psmouse, 0); 1432 } while (error && ++retry < 3); 1433 1434 if (error) 1435 return error; 1436 1437 if (retry > 1) 1438 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1439 1440 error = synaptics_query_hardware(psmouse, &info); 1441 if (error) { 1442 psmouse_err(psmouse, "Unable to query device.\n"); 1443 return error; 1444 } 1445 1446 error = synaptics_set_mode(psmouse); 1447 if (error) { 1448 psmouse_err(psmouse, "Unable to initialize device.\n"); 1449 return error; 1450 } 1451 1452 if (info.identity != priv->info.identity || 1453 info.model_id != priv->info.model_id || 1454 info.capabilities != priv->info.capabilities || 1455 info.ext_cap != priv->info.ext_cap) { 1456 psmouse_err(psmouse, 1457 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1458 priv->info.identity, info.identity, 1459 priv->info.model_id, info.model_id, 1460 priv->info.capabilities, info.capabilities, 1461 priv->info.ext_cap, info.ext_cap); 1462 return -ENXIO; 1463 } 1464 1465 return 0; 1466 } 1467 1468 static bool impaired_toshiba_kbc; 1469 1470 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1471 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1472 { 1473 /* Toshiba Satellite */ 1474 .matches = { 1475 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1476 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1477 }, 1478 }, 1479 { 1480 /* Toshiba Dynabook */ 1481 .matches = { 1482 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1483 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1484 }, 1485 }, 1486 { 1487 /* Toshiba Portege M300 */ 1488 .matches = { 1489 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1490 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1491 }, 1492 1493 }, 1494 { 1495 /* Toshiba Portege M300 */ 1496 .matches = { 1497 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1498 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1499 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1500 }, 1501 1502 }, 1503 #endif 1504 { } 1505 }; 1506 1507 static bool broken_olpc_ec; 1508 1509 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1510 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1511 { 1512 /* OLPC XO-1 or XO-1.5 */ 1513 .matches = { 1514 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1515 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1516 }, 1517 }, 1518 #endif 1519 { } 1520 }; 1521 1522 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1523 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1524 { 1525 /* Cr-48 Chromebook (Codename Mario) */ 1526 .matches = { 1527 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1528 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1529 }, 1530 }, 1531 #endif 1532 { } 1533 }; 1534 1535 void __init synaptics_module_init(void) 1536 { 1537 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1538 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1539 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1540 } 1541 1542 static int synaptics_init_ps2(struct psmouse *psmouse, 1543 struct synaptics_device_info *info, 1544 bool absolute_mode) 1545 { 1546 struct synaptics_data *priv; 1547 int err; 1548 1549 synaptics_apply_quirks(psmouse, info); 1550 1551 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1552 if (!priv) 1553 return -ENOMEM; 1554 1555 priv->info = *info; 1556 priv->absolute_mode = absolute_mode; 1557 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1558 priv->disable_gesture = true; 1559 1560 /* 1561 * Unfortunately ForcePad capability is not exported over PS/2, 1562 * so we have to resort to checking PNP IDs. 1563 */ 1564 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1565 1566 err = synaptics_set_mode(psmouse); 1567 if (err) { 1568 psmouse_err(psmouse, "Unable to initialize device.\n"); 1569 goto init_fail; 1570 } 1571 1572 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1573 SYN_NEWABS : SYN_OLDABS; 1574 1575 psmouse_info(psmouse, 1576 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1577 SYN_ID_MODEL(info->identity), 1578 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1579 info->model_id, 1580 info->capabilities, info->ext_cap, info->ext_cap_0c, 1581 info->ext_cap_10, info->board_id, info->firmware_id); 1582 1583 err = set_input_params(psmouse, priv); 1584 if (err) { 1585 psmouse_err(psmouse, 1586 "failed to set up capabilities: %d\n", err); 1587 goto init_fail; 1588 } 1589 1590 /* 1591 * Encode touchpad model so that it can be used to set 1592 * input device->id.version and be visible to userspace. 1593 * Because version is __u16 we have to drop something. 1594 * Hardware info bits seem to be good candidates as they 1595 * are documented to be for Synaptics corp. internal use. 1596 */ 1597 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1598 (info->model_id & 0x000000ff); 1599 1600 if (absolute_mode) { 1601 psmouse->protocol_handler = synaptics_process_byte; 1602 psmouse->pktsize = 6; 1603 } else { 1604 /* Relative mode follows standard PS/2 mouse protocol */ 1605 psmouse->protocol_handler = psmouse_process_byte; 1606 psmouse->pktsize = 3; 1607 } 1608 1609 psmouse->set_rate = synaptics_set_rate; 1610 psmouse->disconnect = synaptics_disconnect; 1611 psmouse->reconnect = synaptics_reconnect; 1612 psmouse->cleanup = synaptics_reset; 1613 /* Synaptics can usually stay in sync without extra help */ 1614 psmouse->resync_time = 0; 1615 1616 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1617 synaptics_pt_create(psmouse); 1618 1619 /* 1620 * Toshiba's KBC seems to have trouble handling data from 1621 * Synaptics at full rate. Switch to a lower rate (roughly 1622 * the same rate as a standard PS/2 mouse). 1623 */ 1624 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1625 psmouse_info(psmouse, 1626 "Toshiba %s detected, limiting rate to 40pps.\n", 1627 dmi_get_system_info(DMI_PRODUCT_NAME)); 1628 psmouse->rate = 40; 1629 } 1630 1631 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1632 err = device_create_file(&psmouse->ps2dev.serio->dev, 1633 &psmouse_attr_disable_gesture.dattr); 1634 if (err) { 1635 psmouse_err(psmouse, 1636 "Failed to create disable_gesture attribute (%d)", 1637 err); 1638 goto init_fail; 1639 } 1640 } 1641 1642 return 0; 1643 1644 init_fail: 1645 kfree(priv); 1646 return err; 1647 } 1648 1649 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1650 { 1651 struct synaptics_device_info info; 1652 int error; 1653 1654 psmouse_reset(psmouse); 1655 1656 error = synaptics_query_hardware(psmouse, &info); 1657 if (error) { 1658 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1659 return error; 1660 } 1661 1662 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1663 } 1664 1665 int synaptics_init_absolute(struct psmouse *psmouse) 1666 { 1667 return __synaptics_init(psmouse, true); 1668 } 1669 1670 int synaptics_init_relative(struct psmouse *psmouse) 1671 { 1672 return __synaptics_init(psmouse, false); 1673 } 1674 1675 static int synaptics_setup_ps2(struct psmouse *psmouse, 1676 struct synaptics_device_info *info) 1677 { 1678 bool absolute_mode = true; 1679 int error; 1680 1681 /* 1682 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1683 * packet spew overloads the EC such that key presses on the keyboard 1684 * are missed. Given that, don't even attempt to use Absolute mode. 1685 * Relative mode seems to work just fine. 1686 */ 1687 if (broken_olpc_ec) { 1688 psmouse_info(psmouse, 1689 "OLPC XO detected, forcing relative protocol.\n"); 1690 absolute_mode = false; 1691 } 1692 1693 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1694 if (error) 1695 return error; 1696 1697 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1698 } 1699 1700 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1701 1702 void __init synaptics_module_init(void) 1703 { 1704 } 1705 1706 static int __maybe_unused 1707 synaptics_setup_ps2(struct psmouse *psmouse, 1708 struct synaptics_device_info *info) 1709 { 1710 return -ENOSYS; 1711 } 1712 1713 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1714 1715 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1716 1717 /* 1718 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1719 * provides a better bandwidth and allow a better control of the touchpads. 1720 * This is used to decide if we need to use this bus or not. 1721 */ 1722 enum { 1723 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1724 SYNAPTICS_INTERTOUCH_OFF, 1725 SYNAPTICS_INTERTOUCH_ON, 1726 }; 1727 1728 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1729 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1730 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1731 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1732 1733 static int synaptics_create_intertouch(struct psmouse *psmouse, 1734 struct synaptics_device_info *info, 1735 bool leave_breadcrumbs) 1736 { 1737 bool topbuttonpad = 1738 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1739 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1740 const struct rmi_device_platform_data pdata = { 1741 .sensor_pdata = { 1742 .sensor_type = rmi_sensor_touchpad, 1743 .axis_align.flip_y = true, 1744 .kernel_tracking = false, 1745 .topbuttonpad = topbuttonpad, 1746 }, 1747 .f30_data = { 1748 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1749 .trackstick_buttons = 1750 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1751 }, 1752 }; 1753 const struct i2c_board_info intertouch_board = { 1754 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1755 .flags = I2C_CLIENT_HOST_NOTIFY, 1756 }; 1757 1758 return psmouse_smbus_init(psmouse, &intertouch_board, 1759 &pdata, sizeof(pdata), true, 1760 leave_breadcrumbs); 1761 } 1762 1763 /** 1764 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1765 * and decides to instantiate a SMBus InterTouch device. 1766 */ 1767 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1768 struct synaptics_device_info *info, 1769 bool leave_breadcrumbs) 1770 { 1771 int error; 1772 1773 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1774 return -ENXIO; 1775 1776 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1777 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1778 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1779 1780 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1781 psmouse_info(psmouse, 1782 "Your touchpad (%s) says it can support a different bus. " 1783 "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", 1784 psmouse->ps2dev.serio->firmware_id); 1785 1786 return -ENXIO; 1787 } 1788 } 1789 1790 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1791 1792 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1793 if (error) { 1794 if (error == -EAGAIN) 1795 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1796 else 1797 psmouse_err(psmouse, "unable to create intertouch device\n"); 1798 1799 return error; 1800 } 1801 1802 return 0; 1803 } 1804 1805 int synaptics_init_smbus(struct psmouse *psmouse) 1806 { 1807 struct synaptics_device_info info; 1808 int error; 1809 1810 psmouse_reset(psmouse); 1811 1812 error = synaptics_query_hardware(psmouse, &info); 1813 if (error) { 1814 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1815 return error; 1816 } 1817 1818 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1819 return -ENXIO; 1820 1821 return synaptics_create_intertouch(psmouse, &info, false); 1822 } 1823 1824 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1825 1826 static int __maybe_unused 1827 synaptics_setup_intertouch(struct psmouse *psmouse, 1828 struct synaptics_device_info *info, 1829 bool leave_breadcrumbs) 1830 { 1831 return -ENOSYS; 1832 } 1833 1834 int synaptics_init_smbus(struct psmouse *psmouse) 1835 { 1836 return -ENOSYS; 1837 } 1838 1839 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1840 1841 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1842 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1843 1844 int synaptics_init(struct psmouse *psmouse) 1845 { 1846 struct synaptics_device_info info; 1847 int error; 1848 int retval; 1849 1850 psmouse_reset(psmouse); 1851 1852 error = synaptics_query_hardware(psmouse, &info); 1853 if (error) { 1854 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1855 return error; 1856 } 1857 1858 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1859 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1860 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1861 /* Forcepads need F21, which is not ready */ 1862 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1863 psmouse_warn(psmouse, 1864 "The touchpad can support a better bus than the too old PS/2 protocol. " 1865 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1866 } 1867 1868 error = synaptics_setup_intertouch(psmouse, &info, true); 1869 if (!error) 1870 return PSMOUSE_SYNAPTICS_SMBUS; 1871 } 1872 1873 retval = synaptics_setup_ps2(psmouse, &info); 1874 if (retval < 0) { 1875 /* 1876 * Not using any flavor of Synaptics support, so clean up 1877 * SMbus breadcrumbs, if any. 1878 */ 1879 psmouse_smbus_cleanup(psmouse); 1880 } 1881 1882 return retval; 1883 } 1884 1885 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1886 1887 int synaptics_init(struct psmouse *psmouse) 1888 { 1889 return -ENOSYS; 1890 } 1891 1892 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1893