1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Synaptics TouchPad PS/2 mouse driver 4 * 5 * 2003 Dmitry Torokhov <dtor@mail.ru> 6 * Added support for pass-through port. Special thanks to Peter Berg Larsen 7 * for explaining various Synaptics quirks. 8 * 9 * 2003 Peter Osterlund <petero2@telia.com> 10 * Ported to 2.5 input device infrastructure. 11 * 12 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 13 * start merging tpconfig and gpm code to a xfree-input module 14 * adding some changes and extensions (ex. 3rd and 4th button) 15 * 16 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 17 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 18 * code for the special synaptics commands (from the tpconfig-source) 19 * 20 * Trademarks are the property of their respective owners. 21 */ 22 23 #include <linux/module.h> 24 #include <linux/delay.h> 25 #include <linux/dmi.h> 26 #include <linux/input/mt.h> 27 #include <linux/serio.h> 28 #include <linux/libps2.h> 29 #include <linux/rmi.h> 30 #include <linux/i2c.h> 31 #include <linux/slab.h> 32 #include "psmouse.h" 33 #include "synaptics.h" 34 35 /* 36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 37 * section 2.3.2, which says that they should be valid regardless of the 38 * actual size of the sensor. 39 * Note that newer firmware allows querying device for maximum useable 40 * coordinates. 41 */ 42 #define XMIN 0 43 #define XMAX 6143 44 #define YMIN 0 45 #define YMAX 6143 46 #define XMIN_NOMINAL 1472 47 #define XMAX_NOMINAL 5472 48 #define YMIN_NOMINAL 1408 49 #define YMAX_NOMINAL 4448 50 51 /* Size in bits of absolute position values reported by the hardware */ 52 #define ABS_POS_BITS 13 53 54 /* 55 * These values should represent the absolute maximum value that will 56 * be reported for a positive position value. Some Synaptics firmware 57 * uses this value to indicate a finger near the edge of the touchpad 58 * whose precise position cannot be determined. 59 * 60 * At least one touchpad is known to report positions in excess of this 61 * value which are actually negative values truncated to the 13-bit 62 * reporting range. These values have never been observed to be lower 63 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 64 * negative and any other value as positive. 65 */ 66 #define X_MAX_POSITIVE 8176 67 #define Y_MAX_POSITIVE 8176 68 69 /* maximum ABS_MT_POSITION displacement (in mm) */ 70 #define DMAX 10 71 72 /***************************************************************************** 73 * Stuff we need even when we do not want native Synaptics support 74 ****************************************************************************/ 75 76 /* 77 * Set the synaptics touchpad mode byte by special commands 78 */ 79 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode) 80 { 81 u8 param[1]; 82 int error; 83 84 error = ps2_sliced_command(&psmouse->ps2dev, mode); 85 if (error) 86 return error; 87 88 param[0] = SYN_PS_SET_MODE2; 89 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); 90 if (error) 91 return error; 92 93 return 0; 94 } 95 96 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 97 { 98 struct ps2dev *ps2dev = &psmouse->ps2dev; 99 u8 param[4] = { 0 }; 100 101 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 102 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 103 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 104 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 105 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 106 107 if (param[1] != 0x47) 108 return -ENODEV; 109 110 if (set_properties) { 111 psmouse->vendor = "Synaptics"; 112 psmouse->name = "TouchPad"; 113 } 114 115 return 0; 116 } 117 118 void synaptics_reset(struct psmouse *psmouse) 119 { 120 /* reset touchpad back to relative mode, gestures enabled */ 121 synaptics_mode_cmd(psmouse, 0); 122 } 123 124 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 125 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 126 127 /* This list has been kindly provided by Synaptics. */ 128 static const char * const topbuttonpad_pnp_ids[] = { 129 "LEN0017", 130 "LEN0018", 131 "LEN0019", 132 "LEN0023", 133 "LEN002A", 134 "LEN002B", 135 "LEN002C", 136 "LEN002D", 137 "LEN002E", 138 "LEN0033", /* Helix */ 139 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 140 "LEN0035", /* X240 */ 141 "LEN0036", /* T440 */ 142 "LEN0037", /* X1 Carbon 2nd */ 143 "LEN0038", 144 "LEN0039", /* T440s */ 145 "LEN0041", 146 "LEN0042", /* Yoga */ 147 "LEN0045", 148 "LEN0047", 149 "LEN2000", /* S540 */ 150 "LEN2001", /* Edge E431 */ 151 "LEN2002", /* Edge E531 */ 152 "LEN2003", 153 "LEN2004", /* L440 */ 154 "LEN2005", 155 "LEN2006", /* Edge E440/E540 */ 156 "LEN2007", 157 "LEN2008", 158 "LEN2009", 159 "LEN200A", 160 "LEN200B", 161 NULL 162 }; 163 164 static const char * const smbus_pnp_ids[] = { 165 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ 166 "LEN0048", /* X1 Carbon 3 */ 167 "LEN0046", /* X250 */ 168 "LEN0049", /* Yoga 11e */ 169 "LEN004a", /* W541 */ 170 "LEN005b", /* P50 */ 171 "LEN005e", /* T560 */ 172 "LEN006c", /* T470s */ 173 "LEN007a", /* T470s */ 174 "LEN0071", /* T480 */ 175 "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ 176 "LEN0073", /* X1 Carbon G5 (Elantech) */ 177 "LEN0091", /* X1 Carbon 6 */ 178 "LEN0092", /* X1 Carbon 6 */ 179 "LEN0093", /* T480 */ 180 "LEN0096", /* X280 */ 181 "LEN0097", /* X280 -> ALPS trackpoint */ 182 "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */ 183 "LEN009b", /* T580 */ 184 "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */ 185 "LEN040f", /* P1 Gen 3 */ 186 "LEN0411", /* L14 Gen 1 */ 187 "LEN200f", /* T450s */ 188 "LEN2044", /* L470 */ 189 "LEN2054", /* E480 */ 190 "LEN2055", /* E580 */ 191 "LEN2068", /* T14 Gen 1 */ 192 "SYN3015", /* HP EliteBook 840 G2 */ 193 "SYN3052", /* HP EliteBook 840 G4 */ 194 "SYN3221", /* HP 15-ay000 */ 195 "SYN323d", /* HP Spectre X360 13-w013dx */ 196 "SYN3257", /* HP Envy 13-ad105ng */ 197 NULL 198 }; 199 200 static const char * const forcepad_pnp_ids[] = { 201 "SYN300D", 202 "SYN3014", 203 NULL 204 }; 205 206 /* 207 * Send a command to the synaptics touchpad by special commands 208 */ 209 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 210 { 211 int error; 212 213 error = ps2_sliced_command(&psmouse->ps2dev, cmd); 214 if (error) 215 return error; 216 217 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 218 if (error) 219 return error; 220 221 return 0; 222 } 223 224 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 225 { 226 int error; 227 union { 228 __be32 be_val; 229 char buf[4]; 230 } resp = { 0 }; 231 232 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 233 if (error) 234 return error; 235 236 *val = be32_to_cpu(resp.be_val); 237 return 0; 238 } 239 240 /* 241 * Identify Touchpad 242 * See also the SYN_ID_* macros 243 */ 244 static int synaptics_identify(struct psmouse *psmouse, 245 struct synaptics_device_info *info) 246 { 247 int error; 248 249 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 250 if (error) 251 return error; 252 253 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 254 } 255 256 /* 257 * Read the model-id bytes from the touchpad 258 * see also SYN_MODEL_* macros 259 */ 260 static int synaptics_model_id(struct psmouse *psmouse, 261 struct synaptics_device_info *info) 262 { 263 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 264 } 265 266 /* 267 * Read the firmware id from the touchpad 268 */ 269 static int synaptics_firmware_id(struct psmouse *psmouse, 270 struct synaptics_device_info *info) 271 { 272 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 273 &info->firmware_id); 274 } 275 276 /* 277 * Read the board id and the "More Extended Queries" from the touchpad 278 * The board id is encoded in the "QUERY MODES" response 279 */ 280 static int synaptics_query_modes(struct psmouse *psmouse, 281 struct synaptics_device_info *info) 282 { 283 u8 bid[3]; 284 int error; 285 286 /* firmwares prior 7.5 have no board_id encoded */ 287 if (SYN_ID_FULL(info->identity) < 0x705) 288 return 0; 289 290 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 291 if (error) 292 return error; 293 294 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 295 296 if (SYN_MEXT_CAP_BIT(bid[0])) 297 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 298 &info->ext_cap_10); 299 300 return 0; 301 } 302 303 /* 304 * Read the capability-bits from the touchpad 305 * see also the SYN_CAP_* macros 306 */ 307 static int synaptics_capability(struct psmouse *psmouse, 308 struct synaptics_device_info *info) 309 { 310 int error; 311 312 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 313 &info->capabilities); 314 if (error) 315 return error; 316 317 info->ext_cap = info->ext_cap_0c = 0; 318 319 /* 320 * Older firmwares had submodel ID fixed to 0x47 321 */ 322 if (SYN_ID_FULL(info->identity) < 0x705 && 323 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 324 return -ENXIO; 325 } 326 327 /* 328 * Unless capExtended is set the rest of the flags should be ignored 329 */ 330 if (!SYN_CAP_EXTENDED(info->capabilities)) 331 info->capabilities = 0; 332 333 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 334 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 335 &info->ext_cap); 336 if (error) { 337 psmouse_warn(psmouse, 338 "device claims to have extended capabilities, but I'm not able to read them.\n"); 339 } else { 340 /* 341 * if nExtBtn is greater than 8 it should be considered 342 * invalid and treated as 0 343 */ 344 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 345 info->ext_cap &= ~SYN_CAP_MB_MASK; 346 } 347 } 348 349 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 350 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 351 &info->ext_cap_0c); 352 if (error) 353 psmouse_warn(psmouse, 354 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 355 } 356 357 return 0; 358 } 359 360 /* 361 * Read touchpad resolution and maximum reported coordinates 362 * Resolution is left zero if touchpad does not support the query 363 */ 364 static int synaptics_resolution(struct psmouse *psmouse, 365 struct synaptics_device_info *info) 366 { 367 u8 resp[3]; 368 int error; 369 370 if (SYN_ID_MAJOR(info->identity) < 4) 371 return 0; 372 373 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 374 if (!error) { 375 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 376 info->x_res = resp[0]; /* x resolution in units/mm */ 377 info->y_res = resp[2]; /* y resolution in units/mm */ 378 } 379 } 380 381 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 382 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 383 error = synaptics_send_cmd(psmouse, 384 SYN_QUE_EXT_MAX_COORDS, resp); 385 if (error) { 386 psmouse_warn(psmouse, 387 "device claims to have max coordinates query, but I'm not able to read it.\n"); 388 } else { 389 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 390 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 391 psmouse_info(psmouse, 392 "queried max coordinates: x [..%d], y [..%d]\n", 393 info->x_max, info->y_max); 394 } 395 } 396 397 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 398 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 399 /* 400 * Firmware v8.1 does not report proper number of extended 401 * capabilities, but has been proven to report correct min 402 * coordinates. 403 */ 404 SYN_ID_FULL(info->identity) == 0x801)) { 405 error = synaptics_send_cmd(psmouse, 406 SYN_QUE_EXT_MIN_COORDS, resp); 407 if (error) { 408 psmouse_warn(psmouse, 409 "device claims to have min coordinates query, but I'm not able to read it.\n"); 410 } else { 411 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 412 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 413 psmouse_info(psmouse, 414 "queried min coordinates: x [%d..], y [%d..]\n", 415 info->x_min, info->y_min); 416 } 417 } 418 419 return 0; 420 } 421 422 static int synaptics_query_hardware(struct psmouse *psmouse, 423 struct synaptics_device_info *info) 424 { 425 int error; 426 427 memset(info, 0, sizeof(*info)); 428 429 error = synaptics_identify(psmouse, info); 430 if (error) 431 return error; 432 433 error = synaptics_model_id(psmouse, info); 434 if (error) 435 return error; 436 437 error = synaptics_firmware_id(psmouse, info); 438 if (error) 439 return error; 440 441 error = synaptics_query_modes(psmouse, info); 442 if (error) 443 return error; 444 445 error = synaptics_capability(psmouse, info); 446 if (error) 447 return error; 448 449 error = synaptics_resolution(psmouse, info); 450 if (error) 451 return error; 452 453 return 0; 454 } 455 456 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 457 458 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 459 460 static bool cr48_profile_sensor; 461 462 #define ANY_BOARD_ID 0 463 struct min_max_quirk { 464 const char * const *pnp_ids; 465 struct { 466 u32 min, max; 467 } board_id; 468 u32 x_min, x_max, y_min, y_max; 469 }; 470 471 static const struct min_max_quirk min_max_pnpid_table[] = { 472 { 473 (const char * const []){"LEN0033", NULL}, 474 {ANY_BOARD_ID, ANY_BOARD_ID}, 475 1024, 5052, 2258, 4832 476 }, 477 { 478 (const char * const []){"LEN0042", NULL}, 479 {ANY_BOARD_ID, ANY_BOARD_ID}, 480 1232, 5710, 1156, 4696 481 }, 482 { 483 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 484 "LEN0039", "LEN2002", "LEN2004", 485 NULL}, 486 {ANY_BOARD_ID, 2961}, 487 1024, 5112, 2024, 4832 488 }, 489 { 490 (const char * const []){"LEN2000", NULL}, 491 {ANY_BOARD_ID, ANY_BOARD_ID}, 492 1024, 5113, 2021, 4832 493 }, 494 { 495 (const char * const []){"LEN2001", NULL}, 496 {ANY_BOARD_ID, ANY_BOARD_ID}, 497 1024, 5022, 2508, 4832 498 }, 499 { 500 (const char * const []){"LEN2006", NULL}, 501 {2691, 2691}, 502 1024, 5045, 2457, 4832 503 }, 504 { 505 (const char * const []){"LEN2006", NULL}, 506 {ANY_BOARD_ID, ANY_BOARD_ID}, 507 1264, 5675, 1171, 4688 508 }, 509 { } 510 }; 511 512 /***************************************************************************** 513 * Synaptics communications functions 514 ****************************************************************************/ 515 516 /* 517 * Synaptics touchpads report the y coordinate from bottom to top, which is 518 * opposite from what userspace expects. 519 * This function is used to invert y before reporting. 520 */ 521 static int synaptics_invert_y(int y) 522 { 523 return YMAX_NOMINAL + YMIN_NOMINAL - y; 524 } 525 526 /* 527 * Apply quirk(s) if the hardware matches 528 */ 529 static void synaptics_apply_quirks(struct psmouse *psmouse, 530 struct synaptics_device_info *info) 531 { 532 int i; 533 534 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 535 if (!psmouse_matches_pnp_id(psmouse, 536 min_max_pnpid_table[i].pnp_ids)) 537 continue; 538 539 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 540 info->board_id < min_max_pnpid_table[i].board_id.min) 541 continue; 542 543 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 544 info->board_id > min_max_pnpid_table[i].board_id.max) 545 continue; 546 547 info->x_min = min_max_pnpid_table[i].x_min; 548 info->x_max = min_max_pnpid_table[i].x_max; 549 info->y_min = min_max_pnpid_table[i].y_min; 550 info->y_max = min_max_pnpid_table[i].y_max; 551 psmouse_info(psmouse, 552 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 553 info->x_min, info->x_max, 554 info->y_min, info->y_max); 555 break; 556 } 557 } 558 559 static bool synaptics_has_agm(struct synaptics_data *priv) 560 { 561 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 562 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); 563 } 564 565 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 566 { 567 static u8 param = 0xc8; 568 int error; 569 570 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); 571 if (error) 572 return error; 573 574 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 575 if (error) 576 return error; 577 578 return 0; 579 } 580 581 static int synaptics_set_mode(struct psmouse *psmouse) 582 { 583 struct synaptics_data *priv = psmouse->private; 584 int error; 585 586 priv->mode = 0; 587 if (priv->absolute_mode) 588 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 589 if (priv->disable_gesture) 590 priv->mode |= SYN_BIT_DISABLE_GESTURE; 591 if (psmouse->rate >= 80) 592 priv->mode |= SYN_BIT_HIGH_RATE; 593 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 594 priv->mode |= SYN_BIT_W_MODE; 595 596 error = synaptics_mode_cmd(psmouse, priv->mode); 597 if (error) 598 return error; 599 600 if (priv->absolute_mode && synaptics_has_agm(priv)) { 601 error = synaptics_set_advanced_gesture_mode(psmouse); 602 if (error) { 603 psmouse_err(psmouse, 604 "Advanced gesture mode init failed: %d\n", 605 error); 606 return error; 607 } 608 } 609 610 return 0; 611 } 612 613 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 614 { 615 struct synaptics_data *priv = psmouse->private; 616 617 if (rate >= 80) { 618 priv->mode |= SYN_BIT_HIGH_RATE; 619 psmouse->rate = 80; 620 } else { 621 priv->mode &= ~SYN_BIT_HIGH_RATE; 622 psmouse->rate = 40; 623 } 624 625 synaptics_mode_cmd(psmouse, priv->mode); 626 } 627 628 /***************************************************************************** 629 * Synaptics pass-through PS/2 port support 630 ****************************************************************************/ 631 static int synaptics_pt_write(struct serio *serio, u8 c) 632 { 633 struct psmouse *parent = psmouse_from_serio(serio->parent); 634 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 635 int error; 636 637 error = ps2_sliced_command(&parent->ps2dev, c); 638 if (error) 639 return error; 640 641 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 642 if (error) 643 return error; 644 645 return 0; 646 } 647 648 static int synaptics_pt_start(struct serio *serio) 649 { 650 struct psmouse *parent = psmouse_from_serio(serio->parent); 651 struct synaptics_data *priv = parent->private; 652 653 guard(serio_pause_rx)(parent->ps2dev.serio); 654 priv->pt_port = serio; 655 656 return 0; 657 } 658 659 static void synaptics_pt_stop(struct serio *serio) 660 { 661 struct psmouse *parent = psmouse_from_serio(serio->parent); 662 struct synaptics_data *priv = parent->private; 663 664 guard(serio_pause_rx)(parent->ps2dev.serio); 665 priv->pt_port = NULL; 666 } 667 668 static int synaptics_pt_open(struct serio *serio) 669 { 670 struct psmouse *parent = psmouse_from_serio(serio->parent); 671 struct synaptics_data *priv = parent->private; 672 673 guard(serio_pause_rx)(parent->ps2dev.serio); 674 priv->pt_port_open = true; 675 676 return 0; 677 } 678 679 static void synaptics_pt_close(struct serio *serio) 680 { 681 struct psmouse *parent = psmouse_from_serio(serio->parent); 682 struct synaptics_data *priv = parent->private; 683 684 guard(serio_pause_rx)(parent->ps2dev.serio); 685 priv->pt_port_open = false; 686 } 687 688 static int synaptics_is_pt_packet(u8 *buf) 689 { 690 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 691 } 692 693 static void synaptics_pass_pt_packet(struct synaptics_data *priv, u8 *packet) 694 { 695 struct serio *ptport; 696 697 ptport = priv->pt_port; 698 if (!ptport) 699 return; 700 701 serio_interrupt(ptport, packet[1], 0); 702 703 if (priv->pt_port_open) { 704 struct psmouse *child = psmouse_from_serio(ptport); 705 706 if (child->state == PSMOUSE_ACTIVATED) { 707 serio_interrupt(ptport, packet[4], 0); 708 serio_interrupt(ptport, packet[5], 0); 709 if (child->pktsize == 4) 710 serio_interrupt(ptport, packet[2], 0); 711 } 712 } 713 } 714 715 static void synaptics_pt_activate(struct psmouse *psmouse) 716 { 717 struct synaptics_data *priv = psmouse->private; 718 struct psmouse *child = psmouse_from_serio(priv->pt_port); 719 720 /* adjust the touchpad to child's choice of protocol */ 721 if (child) { 722 if (child->pktsize == 4) 723 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 724 else 725 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 726 727 if (synaptics_mode_cmd(psmouse, priv->mode)) 728 psmouse_warn(psmouse, 729 "failed to switch guest protocol\n"); 730 } 731 } 732 733 static void synaptics_pt_create(struct psmouse *psmouse) 734 { 735 struct serio *serio; 736 737 serio = kzalloc(sizeof(*serio), GFP_KERNEL); 738 if (!serio) { 739 psmouse_err(psmouse, 740 "not enough memory for pass-through port\n"); 741 return; 742 } 743 744 serio->id.type = SERIO_PS_PSTHRU; 745 strscpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 746 strscpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys)); 747 serio->write = synaptics_pt_write; 748 serio->start = synaptics_pt_start; 749 serio->stop = synaptics_pt_stop; 750 serio->open = synaptics_pt_open; 751 serio->close = synaptics_pt_close; 752 serio->parent = psmouse->ps2dev.serio; 753 754 psmouse->pt_activate = synaptics_pt_activate; 755 756 psmouse_info(psmouse, "serio: %s port at %s\n", 757 serio->name, psmouse->phys); 758 serio_register_port(serio); 759 } 760 761 /***************************************************************************** 762 * Functions to interpret the absolute mode packets 763 ****************************************************************************/ 764 765 static void synaptics_parse_agm(const u8 buf[], 766 struct synaptics_data *priv, 767 struct synaptics_hw_state *hw) 768 { 769 struct synaptics_hw_state *agm = &priv->agm; 770 int agm_packet_type; 771 772 agm_packet_type = (buf[5] & 0x30) >> 4; 773 switch (agm_packet_type) { 774 case 1: 775 /* Gesture packet: (x, y, z) half resolution */ 776 agm->w = hw->w; 777 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 778 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 779 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 780 break; 781 782 case 2: 783 /* AGM-CONTACT packet: we are only interested in the count */ 784 priv->agm_count = buf[1]; 785 break; 786 787 default: 788 break; 789 } 790 } 791 792 static void synaptics_parse_ext_buttons(const u8 buf[], 793 struct synaptics_data *priv, 794 struct synaptics_hw_state *hw) 795 { 796 unsigned int ext_bits = 797 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 798 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 799 800 hw->ext_buttons = buf[4] & ext_mask; 801 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 802 } 803 804 static int synaptics_parse_hw_state(const u8 buf[], 805 struct synaptics_data *priv, 806 struct synaptics_hw_state *hw) 807 { 808 memset(hw, 0, sizeof(struct synaptics_hw_state)); 809 810 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 811 hw->w = (((buf[0] & 0x30) >> 2) | 812 ((buf[0] & 0x04) >> 1) | 813 ((buf[3] & 0x04) >> 2)); 814 815 if (synaptics_has_agm(priv) && hw->w == 2) { 816 synaptics_parse_agm(buf, priv, hw); 817 return 1; 818 } 819 820 hw->x = (((buf[3] & 0x10) << 8) | 821 ((buf[1] & 0x0f) << 8) | 822 buf[4]); 823 hw->y = (((buf[3] & 0x20) << 7) | 824 ((buf[1] & 0xf0) << 4) | 825 buf[5]); 826 hw->z = buf[2]; 827 828 hw->left = (buf[0] & 0x01) ? 1 : 0; 829 hw->right = (buf[0] & 0x02) ? 1 : 0; 830 831 if (priv->is_forcepad) { 832 /* 833 * ForcePads, like Clickpads, use middle button 834 * bits to report primary button clicks. 835 * Unfortunately they report primary button not 836 * only when user presses on the pad above certain 837 * threshold, but also when there are more than one 838 * finger on the touchpad, which interferes with 839 * out multi-finger gestures. 840 */ 841 if (hw->z == 0) { 842 /* No contacts */ 843 priv->press = priv->report_press = false; 844 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 845 /* 846 * Single-finger touch with pressure above 847 * the threshold. If pressure stays long 848 * enough, we'll start reporting primary 849 * button. We rely on the device continuing 850 * sending data even if finger does not 851 * move. 852 */ 853 if (!priv->press) { 854 priv->press_start = jiffies; 855 priv->press = true; 856 } else if (time_after(jiffies, 857 priv->press_start + 858 msecs_to_jiffies(50))) { 859 priv->report_press = true; 860 } 861 } else { 862 priv->press = false; 863 } 864 865 hw->left = priv->report_press; 866 867 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 868 /* 869 * Clickpad's button is transmitted as middle button, 870 * however, since it is primary button, we will report 871 * it as BTN_LEFT. 872 */ 873 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 874 875 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 876 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 877 if (hw->w == 2) 878 hw->scroll = (s8)buf[1]; 879 } 880 881 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 882 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 883 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 884 } 885 886 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 887 ((buf[0] ^ buf[3]) & 0x02)) { 888 synaptics_parse_ext_buttons(buf, priv, hw); 889 } 890 } else { 891 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 892 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 893 894 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 895 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 896 897 hw->left = (buf[0] & 0x01) ? 1 : 0; 898 hw->right = (buf[0] & 0x02) ? 1 : 0; 899 } 900 901 /* 902 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 903 * is used by some firmware to indicate a finger at the edge of 904 * the touchpad whose precise position cannot be determined, so 905 * convert these values to the maximum axis value. 906 */ 907 if (hw->x > X_MAX_POSITIVE) 908 hw->x -= 1 << ABS_POS_BITS; 909 else if (hw->x == X_MAX_POSITIVE) 910 hw->x = XMAX; 911 912 if (hw->y > Y_MAX_POSITIVE) 913 hw->y -= 1 << ABS_POS_BITS; 914 else if (hw->y == Y_MAX_POSITIVE) 915 hw->y = YMAX; 916 917 return 0; 918 } 919 920 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 921 bool active, int x, int y) 922 { 923 input_mt_slot(dev, slot); 924 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 925 if (active) { 926 input_report_abs(dev, ABS_MT_POSITION_X, x); 927 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 928 } 929 } 930 931 static void synaptics_report_semi_mt_data(struct input_dev *dev, 932 const struct synaptics_hw_state *a, 933 const struct synaptics_hw_state *b, 934 int num_fingers) 935 { 936 if (num_fingers >= 2) { 937 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 938 min(a->y, b->y)); 939 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 940 max(a->y, b->y)); 941 } else if (num_fingers == 1) { 942 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 943 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 944 } else { 945 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 946 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 947 } 948 } 949 950 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 951 const struct synaptics_hw_state *hw) 952 { 953 struct input_dev *dev = psmouse->dev; 954 struct synaptics_data *priv = psmouse->private; 955 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 956 int i; 957 958 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 959 return; 960 961 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 962 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 963 SYN_ID_FULL(priv->info.identity) == 0x802) && 964 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 965 return; 966 967 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 968 for (i = 0; i < ext_bits; i++) { 969 input_report_key(dev, BTN_0 + 2 * i, 970 hw->ext_buttons & BIT(i)); 971 input_report_key(dev, BTN_1 + 2 * i, 972 hw->ext_buttons & BIT(i + ext_bits)); 973 } 974 return; 975 } 976 977 /* 978 * This generation of touchpads has the trackstick buttons 979 * physically wired to the touchpad. Re-route them through 980 * the pass-through interface. 981 */ 982 if (priv->pt_port) { 983 u8 pt_buttons; 984 985 /* The trackstick expects at most 3 buttons */ 986 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 987 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 988 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 989 990 serio_interrupt(priv->pt_port, 991 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 992 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 993 } 994 } 995 996 static void synaptics_report_buttons(struct psmouse *psmouse, 997 const struct synaptics_hw_state *hw) 998 { 999 struct input_dev *dev = psmouse->dev; 1000 struct synaptics_data *priv = psmouse->private; 1001 1002 input_report_key(dev, BTN_LEFT, hw->left); 1003 input_report_key(dev, BTN_RIGHT, hw->right); 1004 1005 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 1006 input_report_key(dev, BTN_MIDDLE, hw->middle); 1007 1008 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 1009 input_report_key(dev, BTN_FORWARD, hw->up); 1010 input_report_key(dev, BTN_BACK, hw->down); 1011 } 1012 1013 synaptics_report_ext_buttons(psmouse, hw); 1014 } 1015 1016 static void synaptics_report_mt_data(struct psmouse *psmouse, 1017 const struct synaptics_hw_state *sgm, 1018 int num_fingers) 1019 { 1020 struct input_dev *dev = psmouse->dev; 1021 struct synaptics_data *priv = psmouse->private; 1022 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 1023 struct input_mt_pos pos[2]; 1024 int slot[2], nsemi, i; 1025 1026 nsemi = clamp_val(num_fingers, 0, 2); 1027 1028 for (i = 0; i < nsemi; i++) { 1029 pos[i].x = hw[i]->x; 1030 pos[i].y = synaptics_invert_y(hw[i]->y); 1031 } 1032 1033 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 1034 1035 for (i = 0; i < nsemi; i++) { 1036 input_mt_slot(dev, slot[i]); 1037 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 1038 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 1039 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 1040 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 1041 } 1042 1043 input_mt_drop_unused(dev); 1044 1045 /* Don't use active slot count to generate BTN_TOOL events. */ 1046 input_mt_report_pointer_emulation(dev, false); 1047 1048 /* Send the number of fingers reported by touchpad itself. */ 1049 input_mt_report_finger_count(dev, num_fingers); 1050 1051 synaptics_report_buttons(psmouse, sgm); 1052 1053 input_sync(dev); 1054 } 1055 1056 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1057 struct synaptics_hw_state *sgm) 1058 { 1059 struct synaptics_data *priv = psmouse->private; 1060 int num_fingers; 1061 1062 /* 1063 * Update mt_state using the new finger count and current mt_state. 1064 */ 1065 if (sgm->z == 0) 1066 num_fingers = 0; 1067 else if (sgm->w >= 4) 1068 num_fingers = 1; 1069 else if (sgm->w == 0) 1070 num_fingers = 2; 1071 else if (sgm->w == 1) 1072 num_fingers = priv->agm_count ? priv->agm_count : 3; 1073 else 1074 num_fingers = 4; 1075 1076 /* Send resulting input events to user space */ 1077 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1078 } 1079 1080 static bool synaptics_has_multifinger(struct synaptics_data *priv) 1081 { 1082 if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) 1083 return true; 1084 1085 /* Advanced gesture mode also sends multi finger data */ 1086 return synaptics_has_agm(priv); 1087 } 1088 1089 /* 1090 * called for each full received packet from the touchpad 1091 */ 1092 static void synaptics_process_packet(struct psmouse *psmouse) 1093 { 1094 struct input_dev *dev = psmouse->dev; 1095 struct synaptics_data *priv = psmouse->private; 1096 struct synaptics_device_info *info = &priv->info; 1097 struct synaptics_hw_state hw; 1098 int num_fingers; 1099 int finger_width; 1100 1101 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1102 return; 1103 1104 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1105 synaptics_image_sensor_process(psmouse, &hw); 1106 return; 1107 } 1108 1109 if (hw.scroll) { 1110 priv->scroll += hw.scroll; 1111 1112 while (priv->scroll >= 4) { 1113 input_report_key(dev, BTN_BACK, !hw.down); 1114 input_sync(dev); 1115 input_report_key(dev, BTN_BACK, hw.down); 1116 input_sync(dev); 1117 priv->scroll -= 4; 1118 } 1119 while (priv->scroll <= -4) { 1120 input_report_key(dev, BTN_FORWARD, !hw.up); 1121 input_sync(dev); 1122 input_report_key(dev, BTN_FORWARD, hw.up); 1123 input_sync(dev); 1124 priv->scroll += 4; 1125 } 1126 return; 1127 } 1128 1129 if (hw.z > 0 && hw.x > 1) { 1130 num_fingers = 1; 1131 finger_width = 5; 1132 if (SYN_CAP_EXTENDED(info->capabilities)) { 1133 switch (hw.w) { 1134 case 0 ... 1: 1135 if (synaptics_has_multifinger(priv)) 1136 num_fingers = hw.w + 2; 1137 break; 1138 case 2: 1139 /* 1140 * SYN_MODEL_PEN(info->model_id): even if 1141 * the device supports pen, we treat it as 1142 * a single finger. 1143 */ 1144 break; 1145 case 4 ... 15: 1146 if (SYN_CAP_PALMDETECT(info->capabilities)) 1147 finger_width = hw.w; 1148 break; 1149 } 1150 } 1151 } else { 1152 num_fingers = 0; 1153 finger_width = 0; 1154 } 1155 1156 if (cr48_profile_sensor) { 1157 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1158 return; 1159 } 1160 1161 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1162 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1163 num_fingers); 1164 1165 /* Post events 1166 * BTN_TOUCH has to be first as mousedev relies on it when doing 1167 * absolute -> relative conversion 1168 */ 1169 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1170 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1171 1172 if (num_fingers > 0) { 1173 input_report_abs(dev, ABS_X, hw.x); 1174 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1175 } 1176 input_report_abs(dev, ABS_PRESSURE, hw.z); 1177 1178 if (SYN_CAP_PALMDETECT(info->capabilities)) 1179 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1180 1181 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1182 if (synaptics_has_multifinger(priv)) { 1183 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1184 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1185 } 1186 1187 synaptics_report_buttons(psmouse, &hw); 1188 1189 input_sync(dev); 1190 } 1191 1192 static bool synaptics_validate_byte(struct psmouse *psmouse, 1193 int idx, enum synaptics_pkt_type pkt_type) 1194 { 1195 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1196 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1197 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1198 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1199 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1200 const u8 *packet = psmouse->packet; 1201 1202 if (idx < 0 || idx > 4) 1203 return false; 1204 1205 switch (pkt_type) { 1206 1207 case SYN_NEWABS: 1208 case SYN_NEWABS_RELAXED: 1209 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1210 1211 case SYN_NEWABS_STRICT: 1212 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1213 1214 case SYN_OLDABS: 1215 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1216 1217 default: 1218 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1219 return false; 1220 } 1221 } 1222 1223 static enum synaptics_pkt_type 1224 synaptics_detect_pkt_type(struct psmouse *psmouse) 1225 { 1226 int i; 1227 1228 for (i = 0; i < 5; i++) { 1229 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1230 psmouse_info(psmouse, "using relaxed packet validation\n"); 1231 return SYN_NEWABS_RELAXED; 1232 } 1233 } 1234 1235 return SYN_NEWABS_STRICT; 1236 } 1237 1238 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1239 { 1240 struct synaptics_data *priv = psmouse->private; 1241 1242 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1243 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1244 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1245 1246 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1247 synaptics_is_pt_packet(psmouse->packet)) { 1248 synaptics_pass_pt_packet(priv, psmouse->packet); 1249 } else { 1250 synaptics_process_packet(psmouse); 1251 } 1252 1253 return PSMOUSE_FULL_PACKET; 1254 } 1255 1256 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1257 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1258 } 1259 1260 /***************************************************************************** 1261 * Driver initialization/cleanup functions 1262 ****************************************************************************/ 1263 static void set_abs_position_params(struct input_dev *dev, 1264 struct synaptics_device_info *info, 1265 int x_code, int y_code) 1266 { 1267 int x_min = info->x_min ?: XMIN_NOMINAL; 1268 int x_max = info->x_max ?: XMAX_NOMINAL; 1269 int y_min = info->y_min ?: YMIN_NOMINAL; 1270 int y_max = info->y_max ?: YMAX_NOMINAL; 1271 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1272 SYN_REDUCED_FILTER_FUZZ : 0; 1273 1274 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1275 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1276 input_abs_set_res(dev, x_code, info->x_res); 1277 input_abs_set_res(dev, y_code, info->y_res); 1278 } 1279 1280 static int set_input_params(struct psmouse *psmouse, 1281 struct synaptics_data *priv) 1282 { 1283 struct input_dev *dev = psmouse->dev; 1284 struct synaptics_device_info *info = &priv->info; 1285 int i; 1286 int error; 1287 1288 /* Reset default psmouse capabilities */ 1289 __clear_bit(EV_REL, dev->evbit); 1290 bitmap_zero(dev->relbit, REL_CNT); 1291 bitmap_zero(dev->keybit, KEY_CNT); 1292 1293 /* Things that apply to both modes */ 1294 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1295 1296 input_set_capability(dev, EV_KEY, BTN_LEFT); 1297 1298 /* Clickpads report only left button */ 1299 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1300 input_set_capability(dev, EV_KEY, BTN_RIGHT); 1301 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1302 input_set_capability(dev, EV_KEY, BTN_MIDDLE); 1303 } 1304 1305 if (!priv->absolute_mode) { 1306 /* Relative mode */ 1307 input_set_capability(dev, EV_REL, REL_X); 1308 input_set_capability(dev, EV_REL, REL_Y); 1309 return 0; 1310 } 1311 1312 /* Absolute mode */ 1313 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1314 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1315 1316 if (cr48_profile_sensor) 1317 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1318 1319 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1320 set_abs_position_params(dev, info, 1321 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1322 /* Image sensors can report per-contact pressure */ 1323 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1324 1325 error = input_mt_init_slots(dev, 2, 1326 INPUT_MT_POINTER | INPUT_MT_TRACK); 1327 if (error) 1328 return error; 1329 1330 /* Image sensors can signal 4 and 5 finger clicks */ 1331 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); 1332 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); 1333 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1334 set_abs_position_params(dev, info, 1335 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1336 /* 1337 * Profile sensor in CR-48 tracks contacts reasonably well, 1338 * other non-image sensors with AGM use semi-mt. 1339 */ 1340 error = input_mt_init_slots(dev, 2, 1341 INPUT_MT_POINTER | 1342 (cr48_profile_sensor ? 1343 INPUT_MT_TRACK : 1344 INPUT_MT_SEMI_MT)); 1345 if (error) 1346 return error; 1347 1348 /* 1349 * For semi-mt devices we send ABS_X/Y ourselves instead of 1350 * input_mt_report_pointer_emulation. But 1351 * input_mt_init_slots() resets the fuzz to 0, leading to a 1352 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X 1353 * position. Let's re-initialize ABS_X/Y here. 1354 */ 1355 if (!cr48_profile_sensor) 1356 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1357 } 1358 1359 if (SYN_CAP_PALMDETECT(info->capabilities)) 1360 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1361 1362 input_set_capability(dev, EV_KEY, BTN_TOUCH); 1363 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); 1364 1365 if (synaptics_has_multifinger(priv)) { 1366 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); 1367 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); 1368 } 1369 1370 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1371 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1372 input_set_capability(dev, EV_KEY, BTN_FORWARD); 1373 input_set_capability(dev, EV_KEY, BTN_BACK); 1374 } 1375 1376 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1377 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1378 input_set_capability(dev, EV_KEY, BTN_0 + i); 1379 1380 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1381 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1382 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1383 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1384 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1385 } 1386 1387 return 0; 1388 } 1389 1390 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1391 void *data, char *buf) 1392 { 1393 struct synaptics_data *priv = psmouse->private; 1394 1395 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1396 } 1397 1398 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1399 void *data, const char *buf, 1400 size_t len) 1401 { 1402 struct synaptics_data *priv = psmouse->private; 1403 unsigned int value; 1404 int err; 1405 1406 err = kstrtouint(buf, 10, &value); 1407 if (err) 1408 return err; 1409 1410 if (value > 1) 1411 return -EINVAL; 1412 1413 if (value == priv->disable_gesture) 1414 return len; 1415 1416 priv->disable_gesture = value; 1417 if (value) 1418 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1419 else 1420 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1421 1422 if (synaptics_mode_cmd(psmouse, priv->mode)) 1423 return -EIO; 1424 1425 return len; 1426 } 1427 1428 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1429 synaptics_show_disable_gesture, 1430 synaptics_set_disable_gesture); 1431 1432 static void synaptics_disconnect(struct psmouse *psmouse) 1433 { 1434 struct synaptics_data *priv = psmouse->private; 1435 1436 /* 1437 * We might have left a breadcrumb when trying to 1438 * set up SMbus companion. 1439 */ 1440 psmouse_smbus_cleanup(psmouse); 1441 1442 if (!priv->absolute_mode && 1443 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1444 device_remove_file(&psmouse->ps2dev.serio->dev, 1445 &psmouse_attr_disable_gesture.dattr); 1446 1447 synaptics_reset(psmouse); 1448 kfree(priv); 1449 psmouse->private = NULL; 1450 } 1451 1452 static int synaptics_reconnect(struct psmouse *psmouse) 1453 { 1454 struct synaptics_data *priv = psmouse->private; 1455 struct synaptics_device_info info; 1456 u8 param[2]; 1457 int retry = 0; 1458 int error; 1459 1460 do { 1461 psmouse_reset(psmouse); 1462 if (retry) { 1463 /* 1464 * On some boxes, right after resuming, the touchpad 1465 * needs some time to finish initializing (I assume 1466 * it needs time to calibrate) and start responding 1467 * to Synaptics-specific queries, so let's wait a 1468 * bit. 1469 */ 1470 ssleep(1); 1471 } 1472 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1473 error = synaptics_detect(psmouse, 0); 1474 } while (error && ++retry < 3); 1475 1476 if (error) 1477 return error; 1478 1479 if (retry > 1) 1480 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1481 1482 error = synaptics_query_hardware(psmouse, &info); 1483 if (error) { 1484 psmouse_err(psmouse, "Unable to query device.\n"); 1485 return error; 1486 } 1487 1488 error = synaptics_set_mode(psmouse); 1489 if (error) { 1490 psmouse_err(psmouse, "Unable to initialize device.\n"); 1491 return error; 1492 } 1493 1494 if (info.identity != priv->info.identity || 1495 info.model_id != priv->info.model_id || 1496 info.capabilities != priv->info.capabilities || 1497 info.ext_cap != priv->info.ext_cap) { 1498 psmouse_err(psmouse, 1499 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1500 priv->info.identity, info.identity, 1501 priv->info.model_id, info.model_id, 1502 priv->info.capabilities, info.capabilities, 1503 priv->info.ext_cap, info.ext_cap); 1504 return -ENXIO; 1505 } 1506 1507 return 0; 1508 } 1509 1510 static bool impaired_toshiba_kbc; 1511 1512 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1513 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1514 { 1515 /* Toshiba Satellite */ 1516 .matches = { 1517 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1518 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1519 }, 1520 }, 1521 { 1522 /* Toshiba Dynabook */ 1523 .matches = { 1524 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1525 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1526 }, 1527 }, 1528 { 1529 /* Toshiba Portege M300 */ 1530 .matches = { 1531 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1532 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1533 }, 1534 1535 }, 1536 { 1537 /* Toshiba Portege M300 */ 1538 .matches = { 1539 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1540 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1541 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1542 }, 1543 1544 }, 1545 #endif 1546 { } 1547 }; 1548 1549 static bool broken_olpc_ec; 1550 1551 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1552 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1553 { 1554 /* OLPC XO-1 or XO-1.5 */ 1555 .matches = { 1556 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1557 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1558 }, 1559 }, 1560 #endif 1561 { } 1562 }; 1563 1564 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1565 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1566 { 1567 /* Cr-48 Chromebook (Codename Mario) */ 1568 .matches = { 1569 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1570 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1571 }, 1572 }, 1573 #endif 1574 { } 1575 }; 1576 1577 void __init synaptics_module_init(void) 1578 { 1579 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1580 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1581 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1582 } 1583 1584 static int synaptics_init_ps2(struct psmouse *psmouse, 1585 struct synaptics_device_info *info, 1586 bool absolute_mode) 1587 { 1588 struct synaptics_data *priv; 1589 int err; 1590 1591 synaptics_apply_quirks(psmouse, info); 1592 1593 psmouse->private = priv = kzalloc(sizeof(*priv), GFP_KERNEL); 1594 if (!priv) 1595 return -ENOMEM; 1596 1597 priv->info = *info; 1598 priv->absolute_mode = absolute_mode; 1599 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1600 priv->disable_gesture = true; 1601 1602 /* 1603 * Unfortunately ForcePad capability is not exported over PS/2, 1604 * so we have to resort to checking PNP IDs. 1605 */ 1606 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1607 1608 err = synaptics_set_mode(psmouse); 1609 if (err) { 1610 psmouse_err(psmouse, "Unable to initialize device.\n"); 1611 goto init_fail; 1612 } 1613 1614 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1615 SYN_NEWABS : SYN_OLDABS; 1616 1617 psmouse_info(psmouse, 1618 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1619 SYN_ID_MODEL(info->identity), 1620 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1621 info->model_id, 1622 info->capabilities, info->ext_cap, info->ext_cap_0c, 1623 info->ext_cap_10, info->board_id, info->firmware_id); 1624 1625 err = set_input_params(psmouse, priv); 1626 if (err) { 1627 psmouse_err(psmouse, 1628 "failed to set up capabilities: %d\n", err); 1629 goto init_fail; 1630 } 1631 1632 /* 1633 * Encode touchpad model so that it can be used to set 1634 * input device->id.version and be visible to userspace. 1635 * Because version is __u16 we have to drop something. 1636 * Hardware info bits seem to be good candidates as they 1637 * are documented to be for Synaptics corp. internal use. 1638 */ 1639 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1640 (info->model_id & 0x000000ff); 1641 1642 if (absolute_mode) { 1643 psmouse->protocol_handler = synaptics_process_byte; 1644 psmouse->pktsize = 6; 1645 } else { 1646 /* Relative mode follows standard PS/2 mouse protocol */ 1647 psmouse->protocol_handler = psmouse_process_byte; 1648 psmouse->pktsize = 3; 1649 } 1650 1651 psmouse->set_rate = synaptics_set_rate; 1652 psmouse->disconnect = synaptics_disconnect; 1653 psmouse->reconnect = synaptics_reconnect; 1654 psmouse->fast_reconnect = NULL; 1655 psmouse->cleanup = synaptics_reset; 1656 /* Synaptics can usually stay in sync without extra help */ 1657 psmouse->resync_time = 0; 1658 1659 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1660 synaptics_pt_create(psmouse); 1661 1662 /* 1663 * Toshiba's KBC seems to have trouble handling data from 1664 * Synaptics at full rate. Switch to a lower rate (roughly 1665 * the same rate as a standard PS/2 mouse). 1666 */ 1667 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1668 psmouse_info(psmouse, 1669 "Toshiba %s detected, limiting rate to 40pps.\n", 1670 dmi_get_system_info(DMI_PRODUCT_NAME)); 1671 psmouse->rate = 40; 1672 } 1673 1674 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1675 err = device_create_file(&psmouse->ps2dev.serio->dev, 1676 &psmouse_attr_disable_gesture.dattr); 1677 if (err) { 1678 psmouse_err(psmouse, 1679 "Failed to create disable_gesture attribute (%d)", 1680 err); 1681 goto init_fail; 1682 } 1683 } 1684 1685 return 0; 1686 1687 init_fail: 1688 kfree(priv); 1689 return err; 1690 } 1691 1692 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1693 { 1694 struct synaptics_device_info info; 1695 int error; 1696 1697 psmouse_reset(psmouse); 1698 1699 error = synaptics_query_hardware(psmouse, &info); 1700 if (error) { 1701 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1702 return error; 1703 } 1704 1705 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1706 } 1707 1708 int synaptics_init_absolute(struct psmouse *psmouse) 1709 { 1710 return __synaptics_init(psmouse, true); 1711 } 1712 1713 int synaptics_init_relative(struct psmouse *psmouse) 1714 { 1715 return __synaptics_init(psmouse, false); 1716 } 1717 1718 static int synaptics_setup_ps2(struct psmouse *psmouse, 1719 struct synaptics_device_info *info) 1720 { 1721 bool absolute_mode = true; 1722 int error; 1723 1724 /* 1725 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1726 * packet spew overloads the EC such that key presses on the keyboard 1727 * are missed. Given that, don't even attempt to use Absolute mode. 1728 * Relative mode seems to work just fine. 1729 */ 1730 if (broken_olpc_ec) { 1731 psmouse_info(psmouse, 1732 "OLPC XO detected, forcing relative protocol.\n"); 1733 absolute_mode = false; 1734 } 1735 1736 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1737 if (error) 1738 return error; 1739 1740 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1741 } 1742 1743 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1744 1745 void __init synaptics_module_init(void) 1746 { 1747 } 1748 1749 static int __maybe_unused 1750 synaptics_setup_ps2(struct psmouse *psmouse, 1751 struct synaptics_device_info *info) 1752 { 1753 return -ENOSYS; 1754 } 1755 1756 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1757 1758 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1759 1760 /* 1761 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1762 * provides a better bandwidth and allow a better control of the touchpads. 1763 * This is used to decide if we need to use this bus or not. 1764 */ 1765 enum { 1766 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1767 SYNAPTICS_INTERTOUCH_OFF, 1768 SYNAPTICS_INTERTOUCH_ON, 1769 }; 1770 1771 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1772 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1773 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1774 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1775 1776 static int synaptics_create_intertouch(struct psmouse *psmouse, 1777 struct synaptics_device_info *info, 1778 bool leave_breadcrumbs) 1779 { 1780 bool topbuttonpad = 1781 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1782 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1783 const struct rmi_device_platform_data pdata = { 1784 .reset_delay_ms = 30, 1785 .sensor_pdata = { 1786 .sensor_type = rmi_sensor_touchpad, 1787 .axis_align.flip_y = true, 1788 .kernel_tracking = false, 1789 .topbuttonpad = topbuttonpad, 1790 }, 1791 .gpio_data = { 1792 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1793 .trackstick_buttons = 1794 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1795 }, 1796 }; 1797 const struct i2c_board_info intertouch_board = { 1798 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1799 .flags = I2C_CLIENT_HOST_NOTIFY, 1800 }; 1801 1802 return psmouse_smbus_init(psmouse, &intertouch_board, 1803 &pdata, sizeof(pdata), true, 1804 leave_breadcrumbs); 1805 } 1806 1807 /* 1808 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1809 * and decides to instantiate a SMBus InterTouch device. 1810 */ 1811 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1812 struct synaptics_device_info *info, 1813 bool leave_breadcrumbs) 1814 { 1815 int error; 1816 1817 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1818 return -ENXIO; 1819 1820 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1821 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1822 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1823 1824 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1825 psmouse_info(psmouse, 1826 "Your touchpad (%s) says it can support a different bus. " 1827 "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", 1828 psmouse->ps2dev.serio->firmware_id); 1829 1830 return -ENXIO; 1831 } 1832 } 1833 1834 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1835 1836 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1837 if (error) { 1838 if (error == -EAGAIN) 1839 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1840 else 1841 psmouse_err(psmouse, "unable to create intertouch device\n"); 1842 1843 return error; 1844 } 1845 1846 return 0; 1847 } 1848 1849 int synaptics_init_smbus(struct psmouse *psmouse) 1850 { 1851 struct synaptics_device_info info; 1852 int error; 1853 1854 psmouse_reset(psmouse); 1855 1856 error = synaptics_query_hardware(psmouse, &info); 1857 if (error) { 1858 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1859 return error; 1860 } 1861 1862 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1863 return -ENXIO; 1864 1865 return synaptics_create_intertouch(psmouse, &info, false); 1866 } 1867 1868 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1869 1870 static int __maybe_unused 1871 synaptics_setup_intertouch(struct psmouse *psmouse, 1872 struct synaptics_device_info *info, 1873 bool leave_breadcrumbs) 1874 { 1875 return -ENOSYS; 1876 } 1877 1878 int synaptics_init_smbus(struct psmouse *psmouse) 1879 { 1880 return -ENOSYS; 1881 } 1882 1883 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1884 1885 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1886 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1887 1888 int synaptics_init(struct psmouse *psmouse) 1889 { 1890 struct synaptics_device_info info; 1891 int error; 1892 int retval; 1893 1894 psmouse_reset(psmouse); 1895 1896 error = synaptics_query_hardware(psmouse, &info); 1897 if (error) { 1898 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1899 return error; 1900 } 1901 1902 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1903 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1904 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1905 /* Forcepads need F21, which is not ready */ 1906 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1907 psmouse_warn(psmouse, 1908 "The touchpad can support a better bus than the too old PS/2 protocol. " 1909 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1910 } 1911 1912 error = synaptics_setup_intertouch(psmouse, &info, true); 1913 if (!error) 1914 return PSMOUSE_SYNAPTICS_SMBUS; 1915 } 1916 1917 retval = synaptics_setup_ps2(psmouse, &info); 1918 if (retval < 0) { 1919 /* 1920 * Not using any flavor of Synaptics support, so clean up 1921 * SMbus breadcrumbs, if any. 1922 */ 1923 psmouse_smbus_cleanup(psmouse); 1924 } 1925 1926 return retval; 1927 } 1928 1929 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1930 1931 int synaptics_init(struct psmouse *psmouse) 1932 { 1933 return -ENOSYS; 1934 } 1935 1936 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1937