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