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 = psmouse_sliced_command(psmouse, mode); 88 if (error) 89 return error; 90 91 param[0] = SYN_PS_SET_MODE2; 92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); 93 if (error) 94 return error; 95 96 return 0; 97 } 98 99 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 100 { 101 struct ps2dev *ps2dev = &psmouse->ps2dev; 102 u8 param[4]; 103 104 param[0] = 0; 105 106 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 107 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 108 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 109 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 111 112 if (param[1] != 0x47) 113 return -ENODEV; 114 115 if (set_properties) { 116 psmouse->vendor = "Synaptics"; 117 psmouse->name = "TouchPad"; 118 } 119 120 return 0; 121 } 122 123 void synaptics_reset(struct psmouse *psmouse) 124 { 125 /* reset touchpad back to relative mode, gestures enabled */ 126 synaptics_mode_cmd(psmouse, 0); 127 } 128 129 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 130 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 131 132 /* This list has been kindly provided by Synaptics. */ 133 static const char * const topbuttonpad_pnp_ids[] = { 134 "LEN0017", 135 "LEN0018", 136 "LEN0019", 137 "LEN0023", 138 "LEN002A", 139 "LEN002B", 140 "LEN002C", 141 "LEN002D", 142 "LEN002E", 143 "LEN0033", /* Helix */ 144 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 145 "LEN0035", /* X240 */ 146 "LEN0036", /* T440 */ 147 "LEN0037", /* X1 Carbon 2nd */ 148 "LEN0038", 149 "LEN0039", /* T440s */ 150 "LEN0041", 151 "LEN0042", /* Yoga */ 152 "LEN0045", 153 "LEN0047", 154 "LEN0049", 155 "LEN2000", /* S540 */ 156 "LEN2001", /* Edge E431 */ 157 "LEN2002", /* Edge E531 */ 158 "LEN2003", 159 "LEN2004", /* L440 */ 160 "LEN2005", 161 "LEN2006", /* Edge E440/E540 */ 162 "LEN2007", 163 "LEN2008", 164 "LEN2009", 165 "LEN200A", 166 "LEN200B", 167 NULL 168 }; 169 170 static const char * const smbus_pnp_ids[] = { 171 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ 172 "LEN0048", /* X1 Carbon 3 */ 173 "LEN0046", /* X250 */ 174 "LEN004a", /* W541 */ 175 "LEN200f", /* T450s */ 176 "LEN2018", /* T460p */ 177 NULL 178 }; 179 180 static const char * const forcepad_pnp_ids[] = { 181 "SYN300D", 182 "SYN3014", 183 NULL 184 }; 185 186 /* 187 * Send a command to the synpatics touchpad by special commands 188 */ 189 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 190 { 191 int error; 192 193 error = psmouse_sliced_command(psmouse, cmd); 194 if (error) 195 return error; 196 197 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 198 if (error) 199 return error; 200 201 return 0; 202 } 203 204 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 205 { 206 int error; 207 union { 208 __be32 be_val; 209 char buf[4]; 210 } resp = { 0 }; 211 212 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 213 if (error) 214 return error; 215 216 *val = be32_to_cpu(resp.be_val); 217 return 0; 218 } 219 220 /* 221 * Identify Touchpad 222 * See also the SYN_ID_* macros 223 */ 224 static int synaptics_identify(struct psmouse *psmouse, 225 struct synaptics_device_info *info) 226 { 227 int error; 228 229 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 230 if (error) 231 return error; 232 233 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 234 } 235 236 /* 237 * Read the model-id bytes from the touchpad 238 * see also SYN_MODEL_* macros 239 */ 240 static int synaptics_model_id(struct psmouse *psmouse, 241 struct synaptics_device_info *info) 242 { 243 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 244 } 245 246 /* 247 * Read the firmware id from the touchpad 248 */ 249 static int synaptics_firmware_id(struct psmouse *psmouse, 250 struct synaptics_device_info *info) 251 { 252 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 253 &info->firmware_id); 254 } 255 256 /* 257 * Read the board id and the "More Extended Queries" from the touchpad 258 * The board id is encoded in the "QUERY MODES" response 259 */ 260 static int synaptics_query_modes(struct psmouse *psmouse, 261 struct synaptics_device_info *info) 262 { 263 u8 bid[3]; 264 int error; 265 266 /* firmwares prior 7.5 have no board_id encoded */ 267 if (SYN_ID_FULL(info->identity) < 0x705) 268 return 0; 269 270 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 271 if (error) 272 return error; 273 274 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 275 276 if (SYN_MEXT_CAP_BIT(bid[0])) 277 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 278 &info->ext_cap_10); 279 280 return 0; 281 } 282 283 /* 284 * Read the capability-bits from the touchpad 285 * see also the SYN_CAP_* macros 286 */ 287 static int synaptics_capability(struct psmouse *psmouse, 288 struct synaptics_device_info *info) 289 { 290 int error; 291 292 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 293 &info->capabilities); 294 if (error) 295 return error; 296 297 info->ext_cap = info->ext_cap_0c = 0; 298 299 /* 300 * Older firmwares had submodel ID fixed to 0x47 301 */ 302 if (SYN_ID_FULL(info->identity) < 0x705 && 303 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 304 return -ENXIO; 305 } 306 307 /* 308 * Unless capExtended is set the rest of the flags should be ignored 309 */ 310 if (!SYN_CAP_EXTENDED(info->capabilities)) 311 info->capabilities = 0; 312 313 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 314 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 315 &info->ext_cap); 316 if (error) { 317 psmouse_warn(psmouse, 318 "device claims to have extended capabilities, but I'm not able to read them.\n"); 319 } else { 320 /* 321 * if nExtBtn is greater than 8 it should be considered 322 * invalid and treated as 0 323 */ 324 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 325 info->ext_cap &= ~SYN_CAP_MB_MASK; 326 } 327 } 328 329 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 330 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 331 &info->ext_cap_0c); 332 if (error) 333 psmouse_warn(psmouse, 334 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 335 } 336 337 return 0; 338 } 339 340 /* 341 * Read touchpad resolution and maximum reported coordinates 342 * Resolution is left zero if touchpad does not support the query 343 */ 344 static int synaptics_resolution(struct psmouse *psmouse, 345 struct synaptics_device_info *info) 346 { 347 u8 resp[3]; 348 int error; 349 350 if (SYN_ID_MAJOR(info->identity) < 4) 351 return 0; 352 353 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 354 if (!error) { 355 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 356 info->x_res = resp[0]; /* x resolution in units/mm */ 357 info->y_res = resp[2]; /* y resolution in units/mm */ 358 } 359 } 360 361 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 362 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 363 error = synaptics_send_cmd(psmouse, 364 SYN_QUE_EXT_MAX_COORDS, resp); 365 if (error) { 366 psmouse_warn(psmouse, 367 "device claims to have max coordinates query, but I'm not able to read it.\n"); 368 } else { 369 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 370 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 371 psmouse_info(psmouse, 372 "queried max coordinates: x [..%d], y [..%d]\n", 373 info->x_max, info->y_max); 374 } 375 } 376 377 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 378 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 379 /* 380 * Firmware v8.1 does not report proper number of extended 381 * capabilities, but has been proven to report correct min 382 * coordinates. 383 */ 384 SYN_ID_FULL(info->identity) == 0x801)) { 385 error = synaptics_send_cmd(psmouse, 386 SYN_QUE_EXT_MIN_COORDS, resp); 387 if (error) { 388 psmouse_warn(psmouse, 389 "device claims to have min coordinates query, but I'm not able to read it.\n"); 390 } else { 391 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 392 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 393 psmouse_info(psmouse, 394 "queried min coordinates: x [%d..], y [%d..]\n", 395 info->x_min, info->y_min); 396 } 397 } 398 399 return 0; 400 } 401 402 static int synaptics_query_hardware(struct psmouse *psmouse, 403 struct synaptics_device_info *info) 404 { 405 int error; 406 407 memset(info, 0, sizeof(*info)); 408 409 error = synaptics_identify(psmouse, info); 410 if (error) 411 return error; 412 413 error = synaptics_model_id(psmouse, info); 414 if (error) 415 return error; 416 417 error = synaptics_firmware_id(psmouse, info); 418 if (error) 419 return error; 420 421 error = synaptics_query_modes(psmouse, info); 422 if (error) 423 return error; 424 425 error = synaptics_capability(psmouse, info); 426 if (error) 427 return error; 428 429 error = synaptics_resolution(psmouse, info); 430 if (error) 431 return error; 432 433 return 0; 434 } 435 436 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 437 438 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 439 440 static bool cr48_profile_sensor; 441 442 #define ANY_BOARD_ID 0 443 struct min_max_quirk { 444 const char * const *pnp_ids; 445 struct { 446 u32 min, max; 447 } board_id; 448 u32 x_min, x_max, y_min, y_max; 449 }; 450 451 static const struct min_max_quirk min_max_pnpid_table[] = { 452 { 453 (const char * const []){"LEN0033", NULL}, 454 {ANY_BOARD_ID, ANY_BOARD_ID}, 455 1024, 5052, 2258, 4832 456 }, 457 { 458 (const char * const []){"LEN0042", NULL}, 459 {ANY_BOARD_ID, ANY_BOARD_ID}, 460 1232, 5710, 1156, 4696 461 }, 462 { 463 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 464 "LEN0039", "LEN2002", "LEN2004", 465 NULL}, 466 {ANY_BOARD_ID, 2961}, 467 1024, 5112, 2024, 4832 468 }, 469 { 470 (const char * const []){"LEN2000", NULL}, 471 {ANY_BOARD_ID, ANY_BOARD_ID}, 472 1024, 5113, 2021, 4832 473 }, 474 { 475 (const char * const []){"LEN2001", NULL}, 476 {ANY_BOARD_ID, ANY_BOARD_ID}, 477 1024, 5022, 2508, 4832 478 }, 479 { 480 (const char * const []){"LEN2006", NULL}, 481 {2691, 2691}, 482 1024, 5045, 2457, 4832 483 }, 484 { 485 (const char * const []){"LEN2006", NULL}, 486 {ANY_BOARD_ID, ANY_BOARD_ID}, 487 1264, 5675, 1171, 4688 488 }, 489 { } 490 }; 491 492 /***************************************************************************** 493 * Synaptics communications functions 494 ****************************************************************************/ 495 496 /* 497 * Synaptics touchpads report the y coordinate from bottom to top, which is 498 * opposite from what userspace expects. 499 * This function is used to invert y before reporting. 500 */ 501 static int synaptics_invert_y(int y) 502 { 503 return YMAX_NOMINAL + YMIN_NOMINAL - y; 504 } 505 506 /* 507 * Apply quirk(s) if the hardware matches 508 */ 509 static void synaptics_apply_quirks(struct psmouse *psmouse, 510 struct synaptics_device_info *info) 511 { 512 int i; 513 514 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 515 if (!psmouse_matches_pnp_id(psmouse, 516 min_max_pnpid_table[i].pnp_ids)) 517 continue; 518 519 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 520 info->board_id < min_max_pnpid_table[i].board_id.min) 521 continue; 522 523 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 524 info->board_id > min_max_pnpid_table[i].board_id.max) 525 continue; 526 527 info->x_min = min_max_pnpid_table[i].x_min; 528 info->x_max = min_max_pnpid_table[i].x_max; 529 info->y_min = min_max_pnpid_table[i].y_min; 530 info->y_max = min_max_pnpid_table[i].y_max; 531 psmouse_info(psmouse, 532 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 533 info->x_min, info->x_max, 534 info->y_min, info->y_max); 535 break; 536 } 537 } 538 539 static bool synaptics_has_agm(struct synaptics_data *priv) 540 { 541 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 542 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); 543 } 544 545 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 546 { 547 static u8 param = 0xc8; 548 int error; 549 550 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL); 551 if (error) 552 return error; 553 554 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 555 if (error) 556 return error; 557 558 return 0; 559 } 560 561 static int synaptics_set_mode(struct psmouse *psmouse) 562 { 563 struct synaptics_data *priv = psmouse->private; 564 int error; 565 566 priv->mode = 0; 567 if (priv->absolute_mode) 568 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 569 if (priv->disable_gesture) 570 priv->mode |= SYN_BIT_DISABLE_GESTURE; 571 if (psmouse->rate >= 80) 572 priv->mode |= SYN_BIT_HIGH_RATE; 573 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 574 priv->mode |= SYN_BIT_W_MODE; 575 576 error = synaptics_mode_cmd(psmouse, priv->mode); 577 if (error) 578 return error; 579 580 if (priv->absolute_mode && synaptics_has_agm(priv)) { 581 error = synaptics_set_advanced_gesture_mode(psmouse); 582 if (error) { 583 psmouse_err(psmouse, 584 "Advanced gesture mode init failed: %d\n", 585 error); 586 return error; 587 } 588 } 589 590 return 0; 591 } 592 593 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 594 { 595 struct synaptics_data *priv = psmouse->private; 596 597 if (rate >= 80) { 598 priv->mode |= SYN_BIT_HIGH_RATE; 599 psmouse->rate = 80; 600 } else { 601 priv->mode &= ~SYN_BIT_HIGH_RATE; 602 psmouse->rate = 40; 603 } 604 605 synaptics_mode_cmd(psmouse, priv->mode); 606 } 607 608 /***************************************************************************** 609 * Synaptics pass-through PS/2 port support 610 ****************************************************************************/ 611 static int synaptics_pt_write(struct serio *serio, u8 c) 612 { 613 struct psmouse *parent = serio_get_drvdata(serio->parent); 614 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 615 int error; 616 617 error = psmouse_sliced_command(parent, c); 618 if (error) 619 return error; 620 621 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 622 if (error) 623 return error; 624 625 return 0; 626 } 627 628 static int synaptics_pt_start(struct serio *serio) 629 { 630 struct psmouse *parent = serio_get_drvdata(serio->parent); 631 struct synaptics_data *priv = parent->private; 632 633 serio_pause_rx(parent->ps2dev.serio); 634 priv->pt_port = serio; 635 serio_continue_rx(parent->ps2dev.serio); 636 637 return 0; 638 } 639 640 static void synaptics_pt_stop(struct serio *serio) 641 { 642 struct psmouse *parent = serio_get_drvdata(serio->parent); 643 struct synaptics_data *priv = parent->private; 644 645 serio_pause_rx(parent->ps2dev.serio); 646 priv->pt_port = NULL; 647 serio_continue_rx(parent->ps2dev.serio); 648 } 649 650 static int synaptics_is_pt_packet(u8 *buf) 651 { 652 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 653 } 654 655 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet) 656 { 657 struct psmouse *child = serio_get_drvdata(ptport); 658 659 if (child && child->state == PSMOUSE_ACTIVATED) { 660 serio_interrupt(ptport, packet[1], 0); 661 serio_interrupt(ptport, packet[4], 0); 662 serio_interrupt(ptport, packet[5], 0); 663 if (child->pktsize == 4) 664 serio_interrupt(ptport, packet[2], 0); 665 } else { 666 serio_interrupt(ptport, packet[1], 0); 667 } 668 } 669 670 static void synaptics_pt_activate(struct psmouse *psmouse) 671 { 672 struct synaptics_data *priv = psmouse->private; 673 struct psmouse *child = serio_get_drvdata(priv->pt_port); 674 675 /* adjust the touchpad to child's choice of protocol */ 676 if (child) { 677 if (child->pktsize == 4) 678 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 679 else 680 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 681 682 if (synaptics_mode_cmd(psmouse, priv->mode)) 683 psmouse_warn(psmouse, 684 "failed to switch guest protocol\n"); 685 } 686 } 687 688 static void synaptics_pt_create(struct psmouse *psmouse) 689 { 690 struct serio *serio; 691 692 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 693 if (!serio) { 694 psmouse_err(psmouse, 695 "not enough memory for pass-through port\n"); 696 return; 697 } 698 699 serio->id.type = SERIO_PS_PSTHRU; 700 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 701 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 702 serio->write = synaptics_pt_write; 703 serio->start = synaptics_pt_start; 704 serio->stop = synaptics_pt_stop; 705 serio->parent = psmouse->ps2dev.serio; 706 707 psmouse->pt_activate = synaptics_pt_activate; 708 709 psmouse_info(psmouse, "serio: %s port at %s\n", 710 serio->name, psmouse->phys); 711 serio_register_port(serio); 712 } 713 714 /***************************************************************************** 715 * Functions to interpret the absolute mode packets 716 ****************************************************************************/ 717 718 static void synaptics_parse_agm(const u8 buf[], 719 struct synaptics_data *priv, 720 struct synaptics_hw_state *hw) 721 { 722 struct synaptics_hw_state *agm = &priv->agm; 723 int agm_packet_type; 724 725 agm_packet_type = (buf[5] & 0x30) >> 4; 726 switch (agm_packet_type) { 727 case 1: 728 /* Gesture packet: (x, y, z) half resolution */ 729 agm->w = hw->w; 730 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 731 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 732 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 733 break; 734 735 case 2: 736 /* AGM-CONTACT packet: we are only interested in the count */ 737 priv->agm_count = buf[1]; 738 break; 739 740 default: 741 break; 742 } 743 } 744 745 static void synaptics_parse_ext_buttons(const u8 buf[], 746 struct synaptics_data *priv, 747 struct synaptics_hw_state *hw) 748 { 749 unsigned int ext_bits = 750 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 751 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 752 753 hw->ext_buttons = buf[4] & ext_mask; 754 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 755 } 756 757 static int synaptics_parse_hw_state(const u8 buf[], 758 struct synaptics_data *priv, 759 struct synaptics_hw_state *hw) 760 { 761 memset(hw, 0, sizeof(struct synaptics_hw_state)); 762 763 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 764 hw->w = (((buf[0] & 0x30) >> 2) | 765 ((buf[0] & 0x04) >> 1) | 766 ((buf[3] & 0x04) >> 2)); 767 768 if (synaptics_has_agm(priv) && hw->w == 2) { 769 synaptics_parse_agm(buf, priv, hw); 770 return 1; 771 } 772 773 hw->x = (((buf[3] & 0x10) << 8) | 774 ((buf[1] & 0x0f) << 8) | 775 buf[4]); 776 hw->y = (((buf[3] & 0x20) << 7) | 777 ((buf[1] & 0xf0) << 4) | 778 buf[5]); 779 hw->z = buf[2]; 780 781 hw->left = (buf[0] & 0x01) ? 1 : 0; 782 hw->right = (buf[0] & 0x02) ? 1 : 0; 783 784 if (priv->is_forcepad) { 785 /* 786 * ForcePads, like Clickpads, use middle button 787 * bits to report primary button clicks. 788 * Unfortunately they report primary button not 789 * only when user presses on the pad above certain 790 * threshold, but also when there are more than one 791 * finger on the touchpad, which interferes with 792 * out multi-finger gestures. 793 */ 794 if (hw->z == 0) { 795 /* No contacts */ 796 priv->press = priv->report_press = false; 797 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 798 /* 799 * Single-finger touch with pressure above 800 * the threshold. If pressure stays long 801 * enough, we'll start reporting primary 802 * button. We rely on the device continuing 803 * sending data even if finger does not 804 * move. 805 */ 806 if (!priv->press) { 807 priv->press_start = jiffies; 808 priv->press = true; 809 } else if (time_after(jiffies, 810 priv->press_start + 811 msecs_to_jiffies(50))) { 812 priv->report_press = true; 813 } 814 } else { 815 priv->press = false; 816 } 817 818 hw->left = priv->report_press; 819 820 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 821 /* 822 * Clickpad's button is transmitted as middle button, 823 * however, since it is primary button, we will report 824 * it as BTN_LEFT. 825 */ 826 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 827 828 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 829 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 830 if (hw->w == 2) 831 hw->scroll = (s8)buf[1]; 832 } 833 834 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 835 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 836 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 837 } 838 839 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 840 ((buf[0] ^ buf[3]) & 0x02)) { 841 synaptics_parse_ext_buttons(buf, priv, hw); 842 } 843 } else { 844 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 845 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 846 847 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 848 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 849 850 hw->left = (buf[0] & 0x01) ? 1 : 0; 851 hw->right = (buf[0] & 0x02) ? 1 : 0; 852 } 853 854 /* 855 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 856 * is used by some firmware to indicate a finger at the edge of 857 * the touchpad whose precise position cannot be determined, so 858 * convert these values to the maximum axis value. 859 */ 860 if (hw->x > X_MAX_POSITIVE) 861 hw->x -= 1 << ABS_POS_BITS; 862 else if (hw->x == X_MAX_POSITIVE) 863 hw->x = XMAX; 864 865 if (hw->y > Y_MAX_POSITIVE) 866 hw->y -= 1 << ABS_POS_BITS; 867 else if (hw->y == Y_MAX_POSITIVE) 868 hw->y = YMAX; 869 870 return 0; 871 } 872 873 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 874 bool active, int x, int y) 875 { 876 input_mt_slot(dev, slot); 877 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 878 if (active) { 879 input_report_abs(dev, ABS_MT_POSITION_X, x); 880 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 881 } 882 } 883 884 static void synaptics_report_semi_mt_data(struct input_dev *dev, 885 const struct synaptics_hw_state *a, 886 const struct synaptics_hw_state *b, 887 int num_fingers) 888 { 889 if (num_fingers >= 2) { 890 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 891 min(a->y, b->y)); 892 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 893 max(a->y, b->y)); 894 } else if (num_fingers == 1) { 895 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 896 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 897 } else { 898 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 899 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 900 } 901 } 902 903 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 904 const struct synaptics_hw_state *hw) 905 { 906 struct input_dev *dev = psmouse->dev; 907 struct synaptics_data *priv = psmouse->private; 908 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 909 int i; 910 911 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 912 return; 913 914 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 915 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 916 SYN_ID_FULL(priv->info.identity) == 0x802) && 917 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 918 return; 919 920 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 921 for (i = 0; i < ext_bits; i++) { 922 input_report_key(dev, BTN_0 + 2 * i, 923 hw->ext_buttons & BIT(i)); 924 input_report_key(dev, BTN_1 + 2 * i, 925 hw->ext_buttons & BIT(i + ext_bits)); 926 } 927 return; 928 } 929 930 /* 931 * This generation of touchpads has the trackstick buttons 932 * physically wired to the touchpad. Re-route them through 933 * the pass-through interface. 934 */ 935 if (priv->pt_port) { 936 u8 pt_buttons; 937 938 /* The trackstick expects at most 3 buttons */ 939 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 940 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 941 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 942 943 serio_interrupt(priv->pt_port, 944 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 945 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 946 } 947 } 948 949 static void synaptics_report_buttons(struct psmouse *psmouse, 950 const struct synaptics_hw_state *hw) 951 { 952 struct input_dev *dev = psmouse->dev; 953 struct synaptics_data *priv = psmouse->private; 954 955 input_report_key(dev, BTN_LEFT, hw->left); 956 input_report_key(dev, BTN_RIGHT, hw->right); 957 958 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 959 input_report_key(dev, BTN_MIDDLE, hw->middle); 960 961 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 962 input_report_key(dev, BTN_FORWARD, hw->up); 963 input_report_key(dev, BTN_BACK, hw->down); 964 } 965 966 synaptics_report_ext_buttons(psmouse, hw); 967 } 968 969 static void synaptics_report_mt_data(struct psmouse *psmouse, 970 const struct synaptics_hw_state *sgm, 971 int num_fingers) 972 { 973 struct input_dev *dev = psmouse->dev; 974 struct synaptics_data *priv = psmouse->private; 975 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 976 struct input_mt_pos pos[2]; 977 int slot[2], nsemi, i; 978 979 nsemi = clamp_val(num_fingers, 0, 2); 980 981 for (i = 0; i < nsemi; i++) { 982 pos[i].x = hw[i]->x; 983 pos[i].y = synaptics_invert_y(hw[i]->y); 984 } 985 986 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 987 988 for (i = 0; i < nsemi; i++) { 989 input_mt_slot(dev, slot[i]); 990 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 991 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 992 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 993 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 994 } 995 996 input_mt_drop_unused(dev); 997 998 /* Don't use active slot count to generate BTN_TOOL events. */ 999 input_mt_report_pointer_emulation(dev, false); 1000 1001 /* Send the number of fingers reported by touchpad itself. */ 1002 input_mt_report_finger_count(dev, num_fingers); 1003 1004 synaptics_report_buttons(psmouse, sgm); 1005 1006 input_sync(dev); 1007 } 1008 1009 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1010 struct synaptics_hw_state *sgm) 1011 { 1012 struct synaptics_data *priv = psmouse->private; 1013 int num_fingers; 1014 1015 /* 1016 * Update mt_state using the new finger count and current mt_state. 1017 */ 1018 if (sgm->z == 0) 1019 num_fingers = 0; 1020 else if (sgm->w >= 4) 1021 num_fingers = 1; 1022 else if (sgm->w == 0) 1023 num_fingers = 2; 1024 else if (sgm->w == 1) 1025 num_fingers = priv->agm_count ? priv->agm_count : 3; 1026 else 1027 num_fingers = 4; 1028 1029 /* Send resulting input events to user space */ 1030 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1031 } 1032 1033 static bool synaptics_has_multifinger(struct synaptics_data *priv) 1034 { 1035 if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) 1036 return true; 1037 1038 /* Advanced gesture mode also sends multi finger data */ 1039 return synaptics_has_agm(priv); 1040 } 1041 1042 /* 1043 * called for each full received packet from the touchpad 1044 */ 1045 static void synaptics_process_packet(struct psmouse *psmouse) 1046 { 1047 struct input_dev *dev = psmouse->dev; 1048 struct synaptics_data *priv = psmouse->private; 1049 struct synaptics_device_info *info = &priv->info; 1050 struct synaptics_hw_state hw; 1051 int num_fingers; 1052 int finger_width; 1053 1054 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1055 return; 1056 1057 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1058 synaptics_image_sensor_process(psmouse, &hw); 1059 return; 1060 } 1061 1062 if (hw.scroll) { 1063 priv->scroll += hw.scroll; 1064 1065 while (priv->scroll >= 4) { 1066 input_report_key(dev, BTN_BACK, !hw.down); 1067 input_sync(dev); 1068 input_report_key(dev, BTN_BACK, hw.down); 1069 input_sync(dev); 1070 priv->scroll -= 4; 1071 } 1072 while (priv->scroll <= -4) { 1073 input_report_key(dev, BTN_FORWARD, !hw.up); 1074 input_sync(dev); 1075 input_report_key(dev, BTN_FORWARD, hw.up); 1076 input_sync(dev); 1077 priv->scroll += 4; 1078 } 1079 return; 1080 } 1081 1082 if (hw.z > 0 && hw.x > 1) { 1083 num_fingers = 1; 1084 finger_width = 5; 1085 if (SYN_CAP_EXTENDED(info->capabilities)) { 1086 switch (hw.w) { 1087 case 0 ... 1: 1088 if (synaptics_has_multifinger(priv)) 1089 num_fingers = hw.w + 2; 1090 break; 1091 case 2: 1092 if (SYN_MODEL_PEN(info->model_id)) 1093 ; /* Nothing, treat a pen as a single finger */ 1094 break; 1095 case 4 ... 15: 1096 if (SYN_CAP_PALMDETECT(info->capabilities)) 1097 finger_width = hw.w; 1098 break; 1099 } 1100 } 1101 } else { 1102 num_fingers = 0; 1103 finger_width = 0; 1104 } 1105 1106 if (cr48_profile_sensor) { 1107 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1108 return; 1109 } 1110 1111 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1112 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1113 num_fingers); 1114 1115 /* Post events 1116 * BTN_TOUCH has to be first as mousedev relies on it when doing 1117 * absolute -> relative conversion 1118 */ 1119 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1120 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1121 1122 if (num_fingers > 0) { 1123 input_report_abs(dev, ABS_X, hw.x); 1124 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1125 } 1126 input_report_abs(dev, ABS_PRESSURE, hw.z); 1127 1128 if (SYN_CAP_PALMDETECT(info->capabilities)) 1129 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1130 1131 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1132 if (synaptics_has_multifinger(priv)) { 1133 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1134 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1135 } 1136 1137 synaptics_report_buttons(psmouse, &hw); 1138 1139 input_sync(dev); 1140 } 1141 1142 static bool synaptics_validate_byte(struct psmouse *psmouse, 1143 int idx, enum synaptics_pkt_type pkt_type) 1144 { 1145 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1146 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1147 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1148 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1149 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1150 const u8 *packet = psmouse->packet; 1151 1152 if (idx < 0 || idx > 4) 1153 return false; 1154 1155 switch (pkt_type) { 1156 1157 case SYN_NEWABS: 1158 case SYN_NEWABS_RELAXED: 1159 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1160 1161 case SYN_NEWABS_STRICT: 1162 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1163 1164 case SYN_OLDABS: 1165 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1166 1167 default: 1168 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1169 return false; 1170 } 1171 } 1172 1173 static enum synaptics_pkt_type 1174 synaptics_detect_pkt_type(struct psmouse *psmouse) 1175 { 1176 int i; 1177 1178 for (i = 0; i < 5; i++) { 1179 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1180 psmouse_info(psmouse, "using relaxed packet validation\n"); 1181 return SYN_NEWABS_RELAXED; 1182 } 1183 } 1184 1185 return SYN_NEWABS_STRICT; 1186 } 1187 1188 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1189 { 1190 struct synaptics_data *priv = psmouse->private; 1191 1192 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1193 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1194 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1195 1196 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1197 synaptics_is_pt_packet(psmouse->packet)) { 1198 if (priv->pt_port) 1199 synaptics_pass_pt_packet(priv->pt_port, 1200 psmouse->packet); 1201 } else 1202 synaptics_process_packet(psmouse); 1203 1204 return PSMOUSE_FULL_PACKET; 1205 } 1206 1207 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1208 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1209 } 1210 1211 /***************************************************************************** 1212 * Driver initialization/cleanup functions 1213 ****************************************************************************/ 1214 static void set_abs_position_params(struct input_dev *dev, 1215 struct synaptics_device_info *info, 1216 int x_code, int y_code) 1217 { 1218 int x_min = info->x_min ?: XMIN_NOMINAL; 1219 int x_max = info->x_max ?: XMAX_NOMINAL; 1220 int y_min = info->y_min ?: YMIN_NOMINAL; 1221 int y_max = info->y_max ?: YMAX_NOMINAL; 1222 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1223 SYN_REDUCED_FILTER_FUZZ : 0; 1224 1225 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1226 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1227 input_abs_set_res(dev, x_code, info->x_res); 1228 input_abs_set_res(dev, y_code, info->y_res); 1229 } 1230 1231 static void set_input_params(struct psmouse *psmouse, 1232 struct synaptics_data *priv) 1233 { 1234 struct input_dev *dev = psmouse->dev; 1235 struct synaptics_device_info *info = &priv->info; 1236 int i; 1237 1238 /* Things that apply to both modes */ 1239 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1240 __set_bit(EV_KEY, dev->evbit); 1241 __set_bit(BTN_LEFT, dev->keybit); 1242 __set_bit(BTN_RIGHT, dev->keybit); 1243 1244 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1245 __set_bit(BTN_MIDDLE, dev->keybit); 1246 1247 if (!priv->absolute_mode) { 1248 /* Relative mode */ 1249 __set_bit(EV_REL, dev->evbit); 1250 __set_bit(REL_X, dev->relbit); 1251 __set_bit(REL_Y, dev->relbit); 1252 return; 1253 } 1254 1255 /* Absolute mode */ 1256 __set_bit(EV_ABS, dev->evbit); 1257 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1258 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1259 1260 if (cr48_profile_sensor) 1261 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1262 1263 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1264 set_abs_position_params(dev, info, 1265 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1266 /* Image sensors can report per-contact pressure */ 1267 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1268 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1269 1270 /* Image sensors can signal 4 and 5 finger clicks */ 1271 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1272 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1273 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1274 set_abs_position_params(dev, info, 1275 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1276 /* 1277 * Profile sensor in CR-48 tracks contacts reasonably well, 1278 * other non-image sensors with AGM use semi-mt. 1279 */ 1280 input_mt_init_slots(dev, 2, 1281 INPUT_MT_POINTER | 1282 (cr48_profile_sensor ? 1283 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1284 1285 /* 1286 * For semi-mt devices we send ABS_X/Y ourselves instead of 1287 * input_mt_report_pointer_emulation. But 1288 * input_mt_init_slots() resets the fuzz to 0, leading to a 1289 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X 1290 * position. Let's re-initialize ABS_X/Y here. 1291 */ 1292 if (!cr48_profile_sensor) 1293 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1294 } 1295 1296 if (SYN_CAP_PALMDETECT(info->capabilities)) 1297 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1298 1299 __set_bit(BTN_TOUCH, dev->keybit); 1300 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1301 1302 if (synaptics_has_multifinger(priv)) { 1303 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1304 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1305 } 1306 1307 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1308 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1309 __set_bit(BTN_FORWARD, dev->keybit); 1310 __set_bit(BTN_BACK, dev->keybit); 1311 } 1312 1313 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1314 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1315 __set_bit(BTN_0 + i, dev->keybit); 1316 1317 __clear_bit(EV_REL, dev->evbit); 1318 __clear_bit(REL_X, dev->relbit); 1319 __clear_bit(REL_Y, dev->relbit); 1320 1321 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1322 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1323 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1324 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1325 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1326 /* Clickpads report only left button */ 1327 __clear_bit(BTN_RIGHT, dev->keybit); 1328 __clear_bit(BTN_MIDDLE, dev->keybit); 1329 } 1330 } 1331 1332 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1333 void *data, char *buf) 1334 { 1335 struct synaptics_data *priv = psmouse->private; 1336 1337 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1338 } 1339 1340 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1341 void *data, const char *buf, 1342 size_t len) 1343 { 1344 struct synaptics_data *priv = psmouse->private; 1345 unsigned int value; 1346 int err; 1347 1348 err = kstrtouint(buf, 10, &value); 1349 if (err) 1350 return err; 1351 1352 if (value > 1) 1353 return -EINVAL; 1354 1355 if (value == priv->disable_gesture) 1356 return len; 1357 1358 priv->disable_gesture = value; 1359 if (value) 1360 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1361 else 1362 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1363 1364 if (synaptics_mode_cmd(psmouse, priv->mode)) 1365 return -EIO; 1366 1367 return len; 1368 } 1369 1370 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1371 synaptics_show_disable_gesture, 1372 synaptics_set_disable_gesture); 1373 1374 static void synaptics_disconnect(struct psmouse *psmouse) 1375 { 1376 struct synaptics_data *priv = psmouse->private; 1377 1378 /* 1379 * We might have left a breadcrumb when trying to 1380 * set up SMbus companion. 1381 */ 1382 psmouse_smbus_cleanup(psmouse); 1383 1384 if (!priv->absolute_mode && 1385 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1386 device_remove_file(&psmouse->ps2dev.serio->dev, 1387 &psmouse_attr_disable_gesture.dattr); 1388 1389 synaptics_reset(psmouse); 1390 kfree(priv); 1391 psmouse->private = NULL; 1392 } 1393 1394 static int synaptics_reconnect(struct psmouse *psmouse) 1395 { 1396 struct synaptics_data *priv = psmouse->private; 1397 struct synaptics_device_info info; 1398 u8 param[2]; 1399 int retry = 0; 1400 int error; 1401 1402 do { 1403 psmouse_reset(psmouse); 1404 if (retry) { 1405 /* 1406 * On some boxes, right after resuming, the touchpad 1407 * needs some time to finish initializing (I assume 1408 * it needs time to calibrate) and start responding 1409 * to Synaptics-specific queries, so let's wait a 1410 * bit. 1411 */ 1412 ssleep(1); 1413 } 1414 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1415 error = synaptics_detect(psmouse, 0); 1416 } while (error && ++retry < 3); 1417 1418 if (error) 1419 return error; 1420 1421 if (retry > 1) 1422 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1423 1424 error = synaptics_query_hardware(psmouse, &info); 1425 if (error) { 1426 psmouse_err(psmouse, "Unable to query device.\n"); 1427 return error; 1428 } 1429 1430 error = synaptics_set_mode(psmouse); 1431 if (error) { 1432 psmouse_err(psmouse, "Unable to initialize device.\n"); 1433 return error; 1434 } 1435 1436 if (info.identity != priv->info.identity || 1437 info.model_id != priv->info.model_id || 1438 info.capabilities != priv->info.capabilities || 1439 info.ext_cap != priv->info.ext_cap) { 1440 psmouse_err(psmouse, 1441 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1442 priv->info.identity, info.identity, 1443 priv->info.model_id, info.model_id, 1444 priv->info.capabilities, info.capabilities, 1445 priv->info.ext_cap, info.ext_cap); 1446 return -ENXIO; 1447 } 1448 1449 return 0; 1450 } 1451 1452 static bool impaired_toshiba_kbc; 1453 1454 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1455 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1456 { 1457 /* Toshiba Satellite */ 1458 .matches = { 1459 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1460 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1461 }, 1462 }, 1463 { 1464 /* Toshiba Dynabook */ 1465 .matches = { 1466 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1467 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1468 }, 1469 }, 1470 { 1471 /* Toshiba Portege M300 */ 1472 .matches = { 1473 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1474 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1475 }, 1476 1477 }, 1478 { 1479 /* Toshiba Portege M300 */ 1480 .matches = { 1481 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1482 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1483 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1484 }, 1485 1486 }, 1487 #endif 1488 { } 1489 }; 1490 1491 static bool broken_olpc_ec; 1492 1493 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1494 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1495 { 1496 /* OLPC XO-1 or XO-1.5 */ 1497 .matches = { 1498 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1499 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1500 }, 1501 }, 1502 #endif 1503 { } 1504 }; 1505 1506 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1507 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1508 { 1509 /* Cr-48 Chromebook (Codename Mario) */ 1510 .matches = { 1511 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1512 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1513 }, 1514 }, 1515 #endif 1516 { } 1517 }; 1518 1519 void __init synaptics_module_init(void) 1520 { 1521 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1522 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1523 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1524 } 1525 1526 static int synaptics_init_ps2(struct psmouse *psmouse, 1527 struct synaptics_device_info *info, 1528 bool absolute_mode) 1529 { 1530 struct synaptics_data *priv; 1531 int err; 1532 1533 synaptics_apply_quirks(psmouse, info); 1534 1535 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1536 if (!priv) 1537 return -ENOMEM; 1538 1539 priv->info = *info; 1540 priv->absolute_mode = absolute_mode; 1541 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1542 priv->disable_gesture = true; 1543 1544 /* 1545 * Unfortunately ForcePad capability is not exported over PS/2, 1546 * so we have to resort to checking PNP IDs. 1547 */ 1548 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1549 1550 err = synaptics_set_mode(psmouse); 1551 if (err) { 1552 psmouse_err(psmouse, "Unable to initialize device.\n"); 1553 goto init_fail; 1554 } 1555 1556 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1557 SYN_NEWABS : SYN_OLDABS; 1558 1559 psmouse_info(psmouse, 1560 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1561 SYN_ID_MODEL(info->identity), 1562 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1563 info->model_id, 1564 info->capabilities, info->ext_cap, info->ext_cap_0c, 1565 info->ext_cap_10, info->board_id, info->firmware_id); 1566 1567 set_input_params(psmouse, priv); 1568 1569 /* 1570 * Encode touchpad model so that it can be used to set 1571 * input device->id.version and be visible to userspace. 1572 * Because version is __u16 we have to drop something. 1573 * Hardware info bits seem to be good candidates as they 1574 * are documented to be for Synaptics corp. internal use. 1575 */ 1576 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1577 (info->model_id & 0x000000ff); 1578 1579 if (absolute_mode) { 1580 psmouse->protocol_handler = synaptics_process_byte; 1581 psmouse->pktsize = 6; 1582 } else { 1583 /* Relative mode follows standard PS/2 mouse protocol */ 1584 psmouse->protocol_handler = psmouse_process_byte; 1585 psmouse->pktsize = 3; 1586 } 1587 1588 psmouse->set_rate = synaptics_set_rate; 1589 psmouse->disconnect = synaptics_disconnect; 1590 psmouse->reconnect = synaptics_reconnect; 1591 psmouse->cleanup = synaptics_reset; 1592 /* Synaptics can usually stay in sync without extra help */ 1593 psmouse->resync_time = 0; 1594 1595 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1596 synaptics_pt_create(psmouse); 1597 1598 /* 1599 * Toshiba's KBC seems to have trouble handling data from 1600 * Synaptics at full rate. Switch to a lower rate (roughly 1601 * the same rate as a standard PS/2 mouse). 1602 */ 1603 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1604 psmouse_info(psmouse, 1605 "Toshiba %s detected, limiting rate to 40pps.\n", 1606 dmi_get_system_info(DMI_PRODUCT_NAME)); 1607 psmouse->rate = 40; 1608 } 1609 1610 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1611 err = device_create_file(&psmouse->ps2dev.serio->dev, 1612 &psmouse_attr_disable_gesture.dattr); 1613 if (err) { 1614 psmouse_err(psmouse, 1615 "Failed to create disable_gesture attribute (%d)", 1616 err); 1617 goto init_fail; 1618 } 1619 } 1620 1621 return 0; 1622 1623 init_fail: 1624 kfree(priv); 1625 return err; 1626 } 1627 1628 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1629 { 1630 struct synaptics_device_info info; 1631 int error; 1632 1633 psmouse_reset(psmouse); 1634 1635 error = synaptics_query_hardware(psmouse, &info); 1636 if (error) { 1637 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1638 return error; 1639 } 1640 1641 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1642 } 1643 1644 int synaptics_init_absolute(struct psmouse *psmouse) 1645 { 1646 return __synaptics_init(psmouse, true); 1647 } 1648 1649 int synaptics_init_relative(struct psmouse *psmouse) 1650 { 1651 return __synaptics_init(psmouse, false); 1652 } 1653 1654 static int synaptics_setup_ps2(struct psmouse *psmouse, 1655 struct synaptics_device_info *info) 1656 { 1657 bool absolute_mode = true; 1658 int error; 1659 1660 /* 1661 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1662 * packet spew overloads the EC such that key presses on the keyboard 1663 * are missed. Given that, don't even attempt to use Absolute mode. 1664 * Relative mode seems to work just fine. 1665 */ 1666 if (broken_olpc_ec) { 1667 psmouse_info(psmouse, 1668 "OLPC XO detected, forcing relative protocol.\n"); 1669 absolute_mode = false; 1670 } 1671 1672 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1673 if (error) 1674 return error; 1675 1676 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1677 } 1678 1679 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1680 1681 void __init synaptics_module_init(void) 1682 { 1683 } 1684 1685 static int __maybe_unused 1686 synaptics_setup_ps2(struct psmouse *psmouse, 1687 struct synaptics_device_info *info) 1688 { 1689 return -ENOSYS; 1690 } 1691 1692 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1693 1694 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1695 1696 /* 1697 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1698 * provides a better bandwidth and allow a better control of the touchpads. 1699 * This is used to decide if we need to use this bus or not. 1700 */ 1701 enum { 1702 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1703 SYNAPTICS_INTERTOUCH_OFF, 1704 SYNAPTICS_INTERTOUCH_ON, 1705 }; 1706 1707 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1708 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1709 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1710 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1711 1712 static int synaptics_create_intertouch(struct psmouse *psmouse, 1713 struct synaptics_device_info *info, 1714 bool leave_breadcrumbs) 1715 { 1716 bool topbuttonpad = 1717 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1718 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1719 const struct rmi_device_platform_data pdata = { 1720 .sensor_pdata = { 1721 .sensor_type = rmi_sensor_touchpad, 1722 .axis_align.flip_y = true, 1723 .kernel_tracking = false, 1724 .topbuttonpad = topbuttonpad, 1725 }, 1726 .f30_data = { 1727 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1728 .trackstick_buttons = 1729 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1730 }, 1731 }; 1732 const struct i2c_board_info intertouch_board = { 1733 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1734 .flags = I2C_CLIENT_HOST_NOTIFY, 1735 }; 1736 1737 return psmouse_smbus_init(psmouse, &intertouch_board, 1738 &pdata, sizeof(pdata), 1739 leave_breadcrumbs); 1740 } 1741 1742 /** 1743 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1744 * and decides to instantiate a SMBus InterTouch device. 1745 */ 1746 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1747 struct synaptics_device_info *info, 1748 bool leave_breadcrumbs) 1749 { 1750 int error; 1751 1752 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1753 return -ENXIO; 1754 1755 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1756 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1757 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1758 1759 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1760 psmouse_info(psmouse, 1761 "Your touchpad (%s) says it can support a different bus. " 1762 "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", 1763 psmouse->ps2dev.serio->firmware_id); 1764 1765 return -ENXIO; 1766 } 1767 } 1768 1769 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1770 1771 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1772 if (error) { 1773 if (error == -EAGAIN) 1774 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1775 else 1776 psmouse_err(psmouse, "unable to create intertouch device\n"); 1777 1778 return error; 1779 } 1780 1781 return 0; 1782 } 1783 1784 int synaptics_init_smbus(struct psmouse *psmouse) 1785 { 1786 struct synaptics_device_info info; 1787 int error; 1788 1789 psmouse_reset(psmouse); 1790 1791 error = synaptics_query_hardware(psmouse, &info); 1792 if (error) { 1793 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1794 return error; 1795 } 1796 1797 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1798 return -ENXIO; 1799 1800 return synaptics_create_intertouch(psmouse, &info, false); 1801 } 1802 1803 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1804 1805 static int __maybe_unused 1806 synaptics_setup_intertouch(struct psmouse *psmouse, 1807 struct synaptics_device_info *info, 1808 bool leave_breadcrumbs) 1809 { 1810 return -ENOSYS; 1811 } 1812 1813 int synaptics_init_smbus(struct psmouse *psmouse) 1814 { 1815 return -ENOSYS; 1816 } 1817 1818 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1819 1820 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1821 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1822 1823 int synaptics_init(struct psmouse *psmouse) 1824 { 1825 struct synaptics_device_info info; 1826 int error; 1827 int retval; 1828 1829 psmouse_reset(psmouse); 1830 1831 error = synaptics_query_hardware(psmouse, &info); 1832 if (error) { 1833 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1834 return error; 1835 } 1836 1837 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1838 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1839 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1840 /* Forcepads need F21, which is not ready */ 1841 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1842 psmouse_warn(psmouse, 1843 "The touchpad can support a better bus than the too old PS/2 protocol. " 1844 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1845 } 1846 1847 error = synaptics_setup_intertouch(psmouse, &info, true); 1848 if (!error) 1849 return PSMOUSE_SYNAPTICS_SMBUS; 1850 } 1851 1852 retval = synaptics_setup_ps2(psmouse, &info); 1853 if (retval < 0) { 1854 /* 1855 * Not using any flavor of Synaptics support, so clean up 1856 * SMbus breadcrumbs, if any. 1857 */ 1858 psmouse_smbus_cleanup(psmouse); 1859 } 1860 1861 return retval; 1862 } 1863 1864 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1865 1866 int synaptics_init(struct psmouse *psmouse) 1867 { 1868 return -ENOSYS; 1869 } 1870 1871 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1872