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