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, unsigned char mode) 83 { 84 unsigned char param[1]; 85 86 if (psmouse_sliced_command(psmouse, mode)) 87 return -1; 88 param[0] = SYN_PS_SET_MODE2; 89 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 90 return -1; 91 return 0; 92 } 93 94 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 95 { 96 struct ps2dev *ps2dev = &psmouse->ps2dev; 97 unsigned char param[4]; 98 99 param[0] = 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 "LEN0049", 150 "LEN2000", /* S540 */ 151 "LEN2001", /* Edge E431 */ 152 "LEN2002", /* Edge E531 */ 153 "LEN2003", 154 "LEN2004", /* L440 */ 155 "LEN2005", 156 "LEN2006", /* Edge E440/E540 */ 157 "LEN2007", 158 "LEN2008", 159 "LEN2009", 160 "LEN200A", 161 "LEN200B", 162 NULL 163 }; 164 165 static const char * const smbus_pnp_ids[] = { 166 /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ 167 "LEN0048", /* X1 Carbon 3 */ 168 "LEN0046", /* X250 */ 169 "LEN004a", /* W541 */ 170 "LEN200f", /* T450s */ 171 NULL 172 }; 173 174 /* 175 * Send a command to the synpatics touchpad by special commands 176 */ 177 static int synaptics_send_cmd(struct psmouse *psmouse, 178 unsigned char c, unsigned char *param) 179 { 180 int error; 181 182 error = psmouse_sliced_command(psmouse, c); 183 if (error) 184 return error; 185 186 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 187 if (error) 188 return error; 189 190 return 0; 191 } 192 193 /* 194 * Identify Touchpad 195 * See also the SYN_ID_* macros 196 */ 197 static int synaptics_identify(struct psmouse *psmouse, 198 struct synaptics_device_info *info) 199 { 200 unsigned char id[3]; 201 int error; 202 203 error = synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id); 204 if (error) 205 return error; 206 207 info->identity = (id[0] << 16) | (id[1] << 8) | id[2]; 208 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 209 } 210 211 /* 212 * Read the model-id bytes from the touchpad 213 * see also SYN_MODEL_* macros 214 */ 215 static int synaptics_model_id(struct psmouse *psmouse, 216 struct synaptics_device_info *info) 217 { 218 unsigned char mi[3]; 219 int error; 220 221 error = synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi); 222 if (error) 223 return error; 224 225 info->model_id = (mi[0] << 16) | (mi[1] << 8) | mi[2]; 226 return 0; 227 } 228 229 /* 230 * Read the firmware id from the touchpad 231 */ 232 static int synaptics_firmware_id(struct psmouse *psmouse, 233 struct synaptics_device_info *info) 234 { 235 unsigned char fwid[3]; 236 int error; 237 238 error = synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid); 239 if (error) 240 return error; 241 242 info->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 243 return 0; 244 } 245 246 static int synaptics_more_extended_queries(struct psmouse *psmouse, 247 struct synaptics_device_info *info) 248 { 249 unsigned char buf[3]; 250 int error; 251 252 error = synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf); 253 if (error) 254 return error; 255 256 info->ext_cap_10 = (buf[0] << 16) | (buf[1] << 8) | buf[2]; 257 return 0; 258 } 259 260 /* 261 * Read the board id and the "More Extended Queries" from the touchpad 262 * The board id is encoded in the "QUERY MODES" response 263 */ 264 static int synaptics_query_modes(struct psmouse *psmouse, 265 struct synaptics_device_info *info) 266 { 267 unsigned char bid[3]; 268 int error; 269 270 /* firmwares prior 7.5 have no board_id encoded */ 271 if (SYN_ID_FULL(info->identity) < 0x705) 272 return 0; 273 274 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 275 if (error) 276 return error; 277 278 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 279 280 if (SYN_MEXT_CAP_BIT(bid[0])) 281 return synaptics_more_extended_queries(psmouse, info); 282 283 return 0; 284 } 285 286 /* 287 * Read the capability-bits from the touchpad 288 * see also the SYN_CAP_* macros 289 */ 290 static int synaptics_capability(struct psmouse *psmouse, 291 struct synaptics_device_info *info) 292 { 293 unsigned char cap[3]; 294 int error; 295 296 error = synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap); 297 if (error) 298 return error; 299 300 info->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 301 info->ext_cap = info->ext_cap_0c = 0; 302 303 /* 304 * Older firmwares had submodel ID fixed to 0x47 305 */ 306 if (SYN_ID_FULL(info->identity) < 0x705 && 307 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 308 return -ENXIO; 309 } 310 311 /* 312 * Unless capExtended is set the rest of the flags should be ignored 313 */ 314 if (!SYN_CAP_EXTENDED(info->capabilities)) 315 info->capabilities = 0; 316 317 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 318 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 319 psmouse_warn(psmouse, 320 "device claims to have extended capabilities, but I'm not able to read them.\n"); 321 } else { 322 info->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 323 324 /* 325 * if nExtBtn is greater than 8 it should be considered 326 * invalid and treated as 0 327 */ 328 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 329 info->ext_cap &= 0xff0fff; 330 } 331 } 332 333 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 334 error = synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap); 335 if (error) 336 psmouse_warn(psmouse, 337 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 338 else 339 info->ext_cap_0c = 340 (cap[0] << 16) | (cap[1] << 8) | cap[2]; 341 } 342 343 return 0; 344 } 345 346 /* 347 * Read touchpad resolution and maximum reported coordinates 348 * Resolution is left zero if touchpad does not support the query 349 */ 350 static int synaptics_resolution(struct psmouse *psmouse, 351 struct synaptics_device_info *info) 352 { 353 unsigned char resp[3]; 354 int error; 355 356 if (SYN_ID_MAJOR(info->identity) < 4) 357 return 0; 358 359 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 360 if (!error) { 361 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 362 info->x_res = resp[0]; /* x resolution in units/mm */ 363 info->y_res = resp[2]; /* y resolution in units/mm */ 364 } 365 } 366 367 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 368 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 369 error = synaptics_send_cmd(psmouse, 370 SYN_QUE_EXT_MAX_COORDS, resp); 371 if (error) { 372 psmouse_warn(psmouse, 373 "device claims to have max coordinates query, but I'm not able to read it.\n"); 374 } else { 375 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 376 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 377 psmouse_info(psmouse, 378 "queried max coordinates: x [..%d], y [..%d]\n", 379 info->x_max, info->y_max); 380 } 381 } 382 383 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 384 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 385 /* 386 * Firmware v8.1 does not report proper number of extended 387 * capabilities, but has been proven to report correct min 388 * coordinates. 389 */ 390 SYN_ID_FULL(info->identity) == 0x801)) { 391 error = synaptics_send_cmd(psmouse, 392 SYN_QUE_EXT_MIN_COORDS, resp); 393 if (error) { 394 psmouse_warn(psmouse, 395 "device claims to have min coordinates query, but I'm not able to read it.\n"); 396 } else { 397 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 398 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 399 psmouse_info(psmouse, 400 "queried min coordinates: x [%d..], y [%d..]\n", 401 info->x_min, info->y_min); 402 } 403 } 404 405 return 0; 406 } 407 408 static int synaptics_query_hardware(struct psmouse *psmouse, 409 struct synaptics_device_info *info) 410 { 411 int error; 412 413 error = synaptics_identify(psmouse, info); 414 if (error) 415 return error; 416 417 error = synaptics_model_id(psmouse, info); 418 if (error) 419 return error; 420 421 error = synaptics_firmware_id(psmouse, info); 422 if (error) 423 return error; 424 425 error = synaptics_query_modes(psmouse, info); 426 if (error) 427 return error; 428 429 error = synaptics_capability(psmouse, info); 430 if (error) 431 return error; 432 433 error = synaptics_resolution(psmouse, info); 434 if (error) 435 return error; 436 437 return 0; 438 } 439 440 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 441 442 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 443 444 static bool cr48_profile_sensor; 445 446 #define ANY_BOARD_ID 0 447 struct min_max_quirk { 448 const char * const *pnp_ids; 449 struct { 450 u32 min, max; 451 } board_id; 452 u32 x_min, x_max, y_min, y_max; 453 }; 454 455 static const struct min_max_quirk min_max_pnpid_table[] = { 456 { 457 (const char * const []){"LEN0033", NULL}, 458 {ANY_BOARD_ID, ANY_BOARD_ID}, 459 1024, 5052, 2258, 4832 460 }, 461 { 462 (const char * const []){"LEN0042", NULL}, 463 {ANY_BOARD_ID, ANY_BOARD_ID}, 464 1232, 5710, 1156, 4696 465 }, 466 { 467 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 468 "LEN0039", "LEN2002", "LEN2004", 469 NULL}, 470 {ANY_BOARD_ID, 2961}, 471 1024, 5112, 2024, 4832 472 }, 473 { 474 (const char * const []){"LEN2000", NULL}, 475 {ANY_BOARD_ID, ANY_BOARD_ID}, 476 1024, 5113, 2021, 4832 477 }, 478 { 479 (const char * const []){"LEN2001", NULL}, 480 {ANY_BOARD_ID, ANY_BOARD_ID}, 481 1024, 5022, 2508, 4832 482 }, 483 { 484 (const char * const []){"LEN2006", NULL}, 485 {2691, 2691}, 486 1024, 5045, 2457, 4832 487 }, 488 { 489 (const char * const []){"LEN2006", NULL}, 490 {ANY_BOARD_ID, ANY_BOARD_ID}, 491 1264, 5675, 1171, 4688 492 }, 493 { } 494 }; 495 496 /* This list has been kindly provided by Synaptics. */ 497 static const char * const forcepad_pnp_ids[] = { 498 "SYN300D", 499 "SYN3014", 500 NULL 501 }; 502 503 /***************************************************************************** 504 * Synaptics communications functions 505 ****************************************************************************/ 506 507 /* 508 * Synaptics touchpads report the y coordinate from bottom to top, which is 509 * opposite from what userspace expects. 510 * This function is used to invert y before reporting. 511 */ 512 static int synaptics_invert_y(int y) 513 { 514 return YMAX_NOMINAL + YMIN_NOMINAL - y; 515 } 516 517 /* 518 * Apply quirk(s) if the hardware matches 519 */ 520 static void synaptics_apply_quirks(struct psmouse *psmouse, 521 struct synaptics_device_info *info) 522 { 523 int i; 524 525 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 526 if (!psmouse_matches_pnp_id(psmouse, 527 min_max_pnpid_table[i].pnp_ids)) 528 continue; 529 530 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 531 info->board_id < min_max_pnpid_table[i].board_id.min) 532 continue; 533 534 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 535 info->board_id > min_max_pnpid_table[i].board_id.max) 536 continue; 537 538 info->x_min = min_max_pnpid_table[i].x_min; 539 info->x_max = min_max_pnpid_table[i].x_max; 540 info->y_min = min_max_pnpid_table[i].y_min; 541 info->y_max = min_max_pnpid_table[i].y_max; 542 psmouse_info(psmouse, 543 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 544 info->x_min, info->x_max, 545 info->y_min, info->y_max); 546 break; 547 } 548 } 549 550 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 551 { 552 static unsigned char param = 0xc8; 553 struct synaptics_data *priv = psmouse->private; 554 555 if (!(SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 556 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c))) 557 return 0; 558 559 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 560 return -1; 561 562 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 563 return -1; 564 565 /* Advanced gesture mode also sends multi finger data */ 566 priv->info.capabilities |= BIT(1); 567 568 return 0; 569 } 570 571 static int synaptics_set_mode(struct psmouse *psmouse) 572 { 573 struct synaptics_data *priv = psmouse->private; 574 575 priv->mode = 0; 576 if (priv->absolute_mode) 577 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 578 if (priv->disable_gesture) 579 priv->mode |= SYN_BIT_DISABLE_GESTURE; 580 if (psmouse->rate >= 80) 581 priv->mode |= SYN_BIT_HIGH_RATE; 582 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 583 priv->mode |= SYN_BIT_W_MODE; 584 585 if (synaptics_mode_cmd(psmouse, priv->mode)) 586 return -1; 587 588 if (priv->absolute_mode && 589 synaptics_set_advanced_gesture_mode(psmouse)) { 590 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 591 return -1; 592 } 593 594 return 0; 595 } 596 597 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 598 { 599 struct synaptics_data *priv = psmouse->private; 600 601 if (rate >= 80) { 602 priv->mode |= SYN_BIT_HIGH_RATE; 603 psmouse->rate = 80; 604 } else { 605 priv->mode &= ~SYN_BIT_HIGH_RATE; 606 psmouse->rate = 40; 607 } 608 609 synaptics_mode_cmd(psmouse, priv->mode); 610 } 611 612 /***************************************************************************** 613 * Synaptics pass-through PS/2 port support 614 ****************************************************************************/ 615 static int synaptics_pt_write(struct serio *serio, unsigned char c) 616 { 617 struct psmouse *parent = serio_get_drvdata(serio->parent); 618 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 619 620 if (psmouse_sliced_command(parent, c)) 621 return -1; 622 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 623 return -1; 624 return 0; 625 } 626 627 static int synaptics_pt_start(struct serio *serio) 628 { 629 struct psmouse *parent = serio_get_drvdata(serio->parent); 630 struct synaptics_data *priv = parent->private; 631 632 serio_pause_rx(parent->ps2dev.serio); 633 priv->pt_port = serio; 634 serio_continue_rx(parent->ps2dev.serio); 635 636 return 0; 637 } 638 639 static void synaptics_pt_stop(struct serio *serio) 640 { 641 struct psmouse *parent = serio_get_drvdata(serio->parent); 642 struct synaptics_data *priv = parent->private; 643 644 serio_pause_rx(parent->ps2dev.serio); 645 priv->pt_port = NULL; 646 serio_continue_rx(parent->ps2dev.serio); 647 } 648 649 static int synaptics_is_pt_packet(unsigned char *buf) 650 { 651 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 652 } 653 654 static void synaptics_pass_pt_packet(struct serio *ptport, 655 unsigned char *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 unsigned char 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 unsigned char 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 unsigned char 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 ((SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 769 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)) && 770 hw->w == 2) { 771 synaptics_parse_agm(buf, priv, hw); 772 return 1; 773 } 774 775 hw->x = (((buf[3] & 0x10) << 8) | 776 ((buf[1] & 0x0f) << 8) | 777 buf[4]); 778 hw->y = (((buf[3] & 0x20) << 7) | 779 ((buf[1] & 0xf0) << 4) | 780 buf[5]); 781 hw->z = buf[2]; 782 783 hw->left = (buf[0] & 0x01) ? 1 : 0; 784 hw->right = (buf[0] & 0x02) ? 1 : 0; 785 786 if (priv->is_forcepad) { 787 /* 788 * ForcePads, like Clickpads, use middle button 789 * bits to report primary button clicks. 790 * Unfortunately they report primary button not 791 * only when user presses on the pad above certain 792 * threshold, but also when there are more than one 793 * finger on the touchpad, which interferes with 794 * out multi-finger gestures. 795 */ 796 if (hw->z == 0) { 797 /* No contacts */ 798 priv->press = priv->report_press = false; 799 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 800 /* 801 * Single-finger touch with pressure above 802 * the threshold. If pressure stays long 803 * enough, we'll start reporting primary 804 * button. We rely on the device continuing 805 * sending data even if finger does not 806 * move. 807 */ 808 if (!priv->press) { 809 priv->press_start = jiffies; 810 priv->press = true; 811 } else if (time_after(jiffies, 812 priv->press_start + 813 msecs_to_jiffies(50))) { 814 priv->report_press = true; 815 } 816 } else { 817 priv->press = false; 818 } 819 820 hw->left = priv->report_press; 821 822 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 823 /* 824 * Clickpad's button is transmitted as middle button, 825 * however, since it is primary button, we will report 826 * it as BTN_LEFT. 827 */ 828 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 829 830 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 831 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 832 if (hw->w == 2) 833 hw->scroll = (signed char)(buf[1]); 834 } 835 836 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 837 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 838 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 839 } 840 841 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 842 ((buf[0] ^ buf[3]) & 0x02)) { 843 synaptics_parse_ext_buttons(buf, priv, hw); 844 } 845 } else { 846 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 847 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 848 849 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 850 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 851 852 hw->left = (buf[0] & 0x01) ? 1 : 0; 853 hw->right = (buf[0] & 0x02) ? 1 : 0; 854 } 855 856 /* 857 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 858 * is used by some firmware to indicate a finger at the edge of 859 * the touchpad whose precise position cannot be determined, so 860 * convert these values to the maximum axis value. 861 */ 862 if (hw->x > X_MAX_POSITIVE) 863 hw->x -= 1 << ABS_POS_BITS; 864 else if (hw->x == X_MAX_POSITIVE) 865 hw->x = XMAX; 866 867 if (hw->y > Y_MAX_POSITIVE) 868 hw->y -= 1 << ABS_POS_BITS; 869 else if (hw->y == Y_MAX_POSITIVE) 870 hw->y = YMAX; 871 872 return 0; 873 } 874 875 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 876 bool active, int x, int y) 877 { 878 input_mt_slot(dev, slot); 879 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 880 if (active) { 881 input_report_abs(dev, ABS_MT_POSITION_X, x); 882 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 883 } 884 } 885 886 static void synaptics_report_semi_mt_data(struct input_dev *dev, 887 const struct synaptics_hw_state *a, 888 const struct synaptics_hw_state *b, 889 int num_fingers) 890 { 891 if (num_fingers >= 2) { 892 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 893 min(a->y, b->y)); 894 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 895 max(a->y, b->y)); 896 } else if (num_fingers == 1) { 897 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 898 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 899 } else { 900 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 901 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 902 } 903 } 904 905 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 906 const struct synaptics_hw_state *hw) 907 { 908 struct input_dev *dev = psmouse->dev; 909 struct synaptics_data *priv = psmouse->private; 910 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 911 int i; 912 913 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 914 return; 915 916 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 917 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 918 SYN_ID_FULL(priv->info.identity) == 0x802) && 919 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 920 return; 921 922 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 923 for (i = 0; i < ext_bits; i++) { 924 input_report_key(dev, BTN_0 + 2 * i, 925 hw->ext_buttons & (1 << i)); 926 input_report_key(dev, BTN_1 + 2 * i, 927 hw->ext_buttons & (1 << (i + ext_bits))); 928 } 929 return; 930 } 931 932 /* 933 * This generation of touchpads has the trackstick buttons 934 * physically wired to the touchpad. Re-route them through 935 * the pass-through interface. 936 */ 937 if (priv->pt_port) { 938 u8 pt_buttons; 939 940 /* The trackstick expects at most 3 buttons */ 941 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 942 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 943 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 944 945 serio_interrupt(priv->pt_port, 946 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 947 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 948 } 949 } 950 951 static void synaptics_report_buttons(struct psmouse *psmouse, 952 const struct synaptics_hw_state *hw) 953 { 954 struct input_dev *dev = psmouse->dev; 955 struct synaptics_data *priv = psmouse->private; 956 957 input_report_key(dev, BTN_LEFT, hw->left); 958 input_report_key(dev, BTN_RIGHT, hw->right); 959 960 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 961 input_report_key(dev, BTN_MIDDLE, hw->middle); 962 963 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 964 input_report_key(dev, BTN_FORWARD, hw->up); 965 input_report_key(dev, BTN_BACK, hw->down); 966 } 967 968 synaptics_report_ext_buttons(psmouse, hw); 969 } 970 971 static void synaptics_report_mt_data(struct psmouse *psmouse, 972 const struct synaptics_hw_state *sgm, 973 int num_fingers) 974 { 975 struct input_dev *dev = psmouse->dev; 976 struct synaptics_data *priv = psmouse->private; 977 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 978 struct input_mt_pos pos[2]; 979 int slot[2], nsemi, i; 980 981 nsemi = clamp_val(num_fingers, 0, 2); 982 983 for (i = 0; i < nsemi; i++) { 984 pos[i].x = hw[i]->x; 985 pos[i].y = synaptics_invert_y(hw[i]->y); 986 } 987 988 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 989 990 for (i = 0; i < nsemi; i++) { 991 input_mt_slot(dev, slot[i]); 992 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 993 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 994 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 995 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 996 } 997 998 input_mt_drop_unused(dev); 999 1000 /* Don't use active slot count to generate BTN_TOOL events. */ 1001 input_mt_report_pointer_emulation(dev, false); 1002 1003 /* Send the number of fingers reported by touchpad itself. */ 1004 input_mt_report_finger_count(dev, num_fingers); 1005 1006 synaptics_report_buttons(psmouse, sgm); 1007 1008 input_sync(dev); 1009 } 1010 1011 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1012 struct synaptics_hw_state *sgm) 1013 { 1014 struct synaptics_data *priv = psmouse->private; 1015 int num_fingers; 1016 1017 /* 1018 * Update mt_state using the new finger count and current mt_state. 1019 */ 1020 if (sgm->z == 0) 1021 num_fingers = 0; 1022 else if (sgm->w >= 4) 1023 num_fingers = 1; 1024 else if (sgm->w == 0) 1025 num_fingers = 2; 1026 else if (sgm->w == 1) 1027 num_fingers = priv->agm_count ? priv->agm_count : 3; 1028 else 1029 num_fingers = 4; 1030 1031 /* Send resulting input events to user space */ 1032 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1033 } 1034 1035 /* 1036 * called for each full received packet from the touchpad 1037 */ 1038 static void synaptics_process_packet(struct psmouse *psmouse) 1039 { 1040 struct input_dev *dev = psmouse->dev; 1041 struct synaptics_data *priv = psmouse->private; 1042 struct synaptics_device_info *info = &priv->info; 1043 struct synaptics_hw_state hw; 1044 int num_fingers; 1045 int finger_width; 1046 1047 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1048 return; 1049 1050 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1051 synaptics_image_sensor_process(psmouse, &hw); 1052 return; 1053 } 1054 1055 if (hw.scroll) { 1056 priv->scroll += hw.scroll; 1057 1058 while (priv->scroll >= 4) { 1059 input_report_key(dev, BTN_BACK, !hw.down); 1060 input_sync(dev); 1061 input_report_key(dev, BTN_BACK, hw.down); 1062 input_sync(dev); 1063 priv->scroll -= 4; 1064 } 1065 while (priv->scroll <= -4) { 1066 input_report_key(dev, BTN_FORWARD, !hw.up); 1067 input_sync(dev); 1068 input_report_key(dev, BTN_FORWARD, hw.up); 1069 input_sync(dev); 1070 priv->scroll += 4; 1071 } 1072 return; 1073 } 1074 1075 if (hw.z > 0 && hw.x > 1) { 1076 num_fingers = 1; 1077 finger_width = 5; 1078 if (SYN_CAP_EXTENDED(info->capabilities)) { 1079 switch (hw.w) { 1080 case 0 ... 1: 1081 if (SYN_CAP_MULTIFINGER(info->capabilities)) 1082 num_fingers = hw.w + 2; 1083 break; 1084 case 2: 1085 if (SYN_MODEL_PEN(info->model_id)) 1086 ; /* Nothing, treat a pen as a single finger */ 1087 break; 1088 case 4 ... 15: 1089 if (SYN_CAP_PALMDETECT(info->capabilities)) 1090 finger_width = hw.w; 1091 break; 1092 } 1093 } 1094 } else { 1095 num_fingers = 0; 1096 finger_width = 0; 1097 } 1098 1099 if (cr48_profile_sensor) { 1100 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1101 return; 1102 } 1103 1104 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1105 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1106 num_fingers); 1107 1108 /* Post events 1109 * BTN_TOUCH has to be first as mousedev relies on it when doing 1110 * absolute -> relative conversion 1111 */ 1112 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1113 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1114 1115 if (num_fingers > 0) { 1116 input_report_abs(dev, ABS_X, hw.x); 1117 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1118 } 1119 input_report_abs(dev, ABS_PRESSURE, hw.z); 1120 1121 if (SYN_CAP_PALMDETECT(info->capabilities)) 1122 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1123 1124 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1125 if (SYN_CAP_MULTIFINGER(info->capabilities)) { 1126 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1127 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1128 } 1129 1130 synaptics_report_buttons(psmouse, &hw); 1131 1132 input_sync(dev); 1133 } 1134 1135 static int synaptics_validate_byte(struct psmouse *psmouse, 1136 int idx, unsigned char pkt_type) 1137 { 1138 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1139 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1140 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1141 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1142 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1143 const char *packet = psmouse->packet; 1144 1145 if (idx < 0 || idx > 4) 1146 return 0; 1147 1148 switch (pkt_type) { 1149 1150 case SYN_NEWABS: 1151 case SYN_NEWABS_RELAXED: 1152 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1153 1154 case SYN_NEWABS_STRICT: 1155 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1156 1157 case SYN_OLDABS: 1158 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1159 1160 default: 1161 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1162 return 0; 1163 } 1164 } 1165 1166 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1167 { 1168 int i; 1169 1170 for (i = 0; i < 5; i++) 1171 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1172 psmouse_info(psmouse, "using relaxed packet validation\n"); 1173 return SYN_NEWABS_RELAXED; 1174 } 1175 1176 return SYN_NEWABS_STRICT; 1177 } 1178 1179 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1180 { 1181 struct synaptics_data *priv = psmouse->private; 1182 1183 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1184 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1185 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1186 1187 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1188 synaptics_is_pt_packet(psmouse->packet)) { 1189 if (priv->pt_port) 1190 synaptics_pass_pt_packet(priv->pt_port, 1191 psmouse->packet); 1192 } else 1193 synaptics_process_packet(psmouse); 1194 1195 return PSMOUSE_FULL_PACKET; 1196 } 1197 1198 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1199 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1200 } 1201 1202 /***************************************************************************** 1203 * Driver initialization/cleanup functions 1204 ****************************************************************************/ 1205 static void set_abs_position_params(struct input_dev *dev, 1206 struct synaptics_device_info *info, 1207 int x_code, int y_code) 1208 { 1209 int x_min = info->x_min ?: XMIN_NOMINAL; 1210 int x_max = info->x_max ?: XMAX_NOMINAL; 1211 int y_min = info->y_min ?: YMIN_NOMINAL; 1212 int y_max = info->y_max ?: YMAX_NOMINAL; 1213 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1214 SYN_REDUCED_FILTER_FUZZ : 0; 1215 1216 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1217 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1218 input_abs_set_res(dev, x_code, info->x_res); 1219 input_abs_set_res(dev, y_code, info->y_res); 1220 } 1221 1222 static void set_input_params(struct psmouse *psmouse, 1223 struct synaptics_data *priv) 1224 { 1225 struct input_dev *dev = psmouse->dev; 1226 struct synaptics_device_info *info = &priv->info; 1227 int i; 1228 1229 /* Things that apply to both modes */ 1230 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1231 __set_bit(EV_KEY, dev->evbit); 1232 __set_bit(BTN_LEFT, dev->keybit); 1233 __set_bit(BTN_RIGHT, dev->keybit); 1234 1235 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1236 __set_bit(BTN_MIDDLE, dev->keybit); 1237 1238 if (!priv->absolute_mode) { 1239 /* Relative mode */ 1240 __set_bit(EV_REL, dev->evbit); 1241 __set_bit(REL_X, dev->relbit); 1242 __set_bit(REL_Y, dev->relbit); 1243 return; 1244 } 1245 1246 /* Absolute mode */ 1247 __set_bit(EV_ABS, dev->evbit); 1248 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1249 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1250 1251 if (cr48_profile_sensor) 1252 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1253 1254 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1255 set_abs_position_params(dev, info, 1256 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1257 /* Image sensors can report per-contact pressure */ 1258 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1259 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1260 1261 /* Image sensors can signal 4 and 5 finger clicks */ 1262 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1263 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1264 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1265 set_abs_position_params(dev, info, 1266 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1267 /* 1268 * Profile sensor in CR-48 tracks contacts reasonably well, 1269 * other non-image sensors with AGM use semi-mt. 1270 */ 1271 input_mt_init_slots(dev, 2, 1272 INPUT_MT_POINTER | 1273 (cr48_profile_sensor ? 1274 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1275 } 1276 1277 if (SYN_CAP_PALMDETECT(info->capabilities)) 1278 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1279 1280 __set_bit(BTN_TOUCH, dev->keybit); 1281 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1282 1283 if (SYN_CAP_MULTIFINGER(info->capabilities)) { 1284 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1285 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1286 } 1287 1288 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1289 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1290 __set_bit(BTN_FORWARD, dev->keybit); 1291 __set_bit(BTN_BACK, dev->keybit); 1292 } 1293 1294 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1295 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1296 __set_bit(BTN_0 + i, dev->keybit); 1297 1298 __clear_bit(EV_REL, dev->evbit); 1299 __clear_bit(REL_X, dev->relbit); 1300 __clear_bit(REL_Y, dev->relbit); 1301 1302 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1303 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1304 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1305 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1306 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1307 /* Clickpads report only left button */ 1308 __clear_bit(BTN_RIGHT, dev->keybit); 1309 __clear_bit(BTN_MIDDLE, dev->keybit); 1310 } 1311 } 1312 1313 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1314 void *data, char *buf) 1315 { 1316 struct synaptics_data *priv = psmouse->private; 1317 1318 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1319 } 1320 1321 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1322 void *data, const char *buf, 1323 size_t len) 1324 { 1325 struct synaptics_data *priv = psmouse->private; 1326 unsigned int value; 1327 int err; 1328 1329 err = kstrtouint(buf, 10, &value); 1330 if (err) 1331 return err; 1332 1333 if (value > 1) 1334 return -EINVAL; 1335 1336 if (value == priv->disable_gesture) 1337 return len; 1338 1339 priv->disable_gesture = value; 1340 if (value) 1341 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1342 else 1343 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1344 1345 if (synaptics_mode_cmd(psmouse, priv->mode)) 1346 return -EIO; 1347 1348 return len; 1349 } 1350 1351 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1352 synaptics_show_disable_gesture, 1353 synaptics_set_disable_gesture); 1354 1355 static void synaptics_disconnect(struct psmouse *psmouse) 1356 { 1357 struct synaptics_data *priv = psmouse->private; 1358 1359 /* 1360 * We might have left a breadcrumb when trying to 1361 * set up SMbus companion. 1362 */ 1363 psmouse_smbus_cleanup(psmouse); 1364 1365 if (!priv->absolute_mode && 1366 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1367 device_remove_file(&psmouse->ps2dev.serio->dev, 1368 &psmouse_attr_disable_gesture.dattr); 1369 1370 synaptics_reset(psmouse); 1371 kfree(priv); 1372 psmouse->private = NULL; 1373 } 1374 1375 static int synaptics_reconnect(struct psmouse *psmouse) 1376 { 1377 struct synaptics_data *priv = psmouse->private; 1378 struct synaptics_device_info info; 1379 unsigned char param[2]; 1380 int retry = 0; 1381 int error; 1382 1383 do { 1384 psmouse_reset(psmouse); 1385 if (retry) { 1386 /* 1387 * On some boxes, right after resuming, the touchpad 1388 * needs some time to finish initializing (I assume 1389 * it needs time to calibrate) and start responding 1390 * to Synaptics-specific queries, so let's wait a 1391 * bit. 1392 */ 1393 ssleep(1); 1394 } 1395 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1396 error = synaptics_detect(psmouse, 0); 1397 } while (error && ++retry < 3); 1398 1399 if (error) 1400 return -1; 1401 1402 if (retry > 1) 1403 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1404 1405 if (synaptics_query_hardware(psmouse, &info)) { 1406 psmouse_err(psmouse, "Unable to query device.\n"); 1407 return -1; 1408 } 1409 1410 if (synaptics_set_mode(psmouse)) { 1411 psmouse_err(psmouse, "Unable to initialize device.\n"); 1412 return -1; 1413 } 1414 1415 if (info.identity != priv->info.identity || 1416 info.model_id != priv->info.model_id || 1417 info.capabilities != priv->info.capabilities || 1418 info.ext_cap != priv->info.ext_cap) { 1419 psmouse_err(psmouse, 1420 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1421 priv->info.identity, info.identity, 1422 priv->info.model_id, info.model_id, 1423 priv->info.capabilities, info.capabilities, 1424 priv->info.ext_cap, info.ext_cap); 1425 return -1; 1426 } 1427 1428 return 0; 1429 } 1430 1431 static bool impaired_toshiba_kbc; 1432 1433 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1434 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1435 { 1436 /* Toshiba Satellite */ 1437 .matches = { 1438 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1439 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1440 }, 1441 }, 1442 { 1443 /* Toshiba Dynabook */ 1444 .matches = { 1445 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1446 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1447 }, 1448 }, 1449 { 1450 /* Toshiba Portege M300 */ 1451 .matches = { 1452 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1453 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1454 }, 1455 1456 }, 1457 { 1458 /* Toshiba Portege M300 */ 1459 .matches = { 1460 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1461 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1462 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1463 }, 1464 1465 }, 1466 #endif 1467 { } 1468 }; 1469 1470 static bool broken_olpc_ec; 1471 1472 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1473 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1474 { 1475 /* OLPC XO-1 or XO-1.5 */ 1476 .matches = { 1477 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1478 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1479 }, 1480 }, 1481 #endif 1482 { } 1483 }; 1484 1485 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1486 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1487 { 1488 /* Cr-48 Chromebook (Codename Mario) */ 1489 .matches = { 1490 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1491 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1492 }, 1493 }, 1494 #endif 1495 { } 1496 }; 1497 1498 void __init synaptics_module_init(void) 1499 { 1500 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1501 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1502 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1503 } 1504 1505 static int synaptics_init_ps2(struct psmouse *psmouse, 1506 struct synaptics_device_info *info, 1507 bool absolute_mode) 1508 { 1509 struct synaptics_data *priv; 1510 int err; 1511 1512 synaptics_apply_quirks(psmouse, info); 1513 1514 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1515 if (!priv) 1516 return -ENOMEM; 1517 1518 priv->info = *info; 1519 priv->absolute_mode = absolute_mode; 1520 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1521 priv->disable_gesture = true; 1522 1523 /* 1524 * Unfortunately ForcePad capability is not exported over PS/2, 1525 * so we have to resort to checking PNP IDs. 1526 */ 1527 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1528 1529 err = synaptics_set_mode(psmouse); 1530 if (err) { 1531 psmouse_err(psmouse, "Unable to initialize device.\n"); 1532 goto init_fail; 1533 } 1534 1535 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1536 SYN_NEWABS : SYN_OLDABS; 1537 1538 psmouse_info(psmouse, 1539 "Touchpad model: %u, fw: %u.%u, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1540 SYN_ID_MODEL(info->identity), 1541 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1542 info->model_id, 1543 info->capabilities, info->ext_cap, info->ext_cap_0c, 1544 info->ext_cap_10, info->board_id, info->firmware_id); 1545 1546 set_input_params(psmouse, priv); 1547 1548 /* 1549 * Encode touchpad model so that it can be used to set 1550 * input device->id.version and be visible to userspace. 1551 * Because version is __u16 we have to drop something. 1552 * Hardware info bits seem to be good candidates as they 1553 * are documented to be for Synaptics corp. internal use. 1554 */ 1555 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1556 (info->model_id & 0x000000ff); 1557 1558 if (absolute_mode) { 1559 psmouse->protocol_handler = synaptics_process_byte; 1560 psmouse->pktsize = 6; 1561 } else { 1562 /* Relative mode follows standard PS/2 mouse protocol */ 1563 psmouse->protocol_handler = psmouse_process_byte; 1564 psmouse->pktsize = 3; 1565 } 1566 1567 psmouse->set_rate = synaptics_set_rate; 1568 psmouse->disconnect = synaptics_disconnect; 1569 psmouse->reconnect = synaptics_reconnect; 1570 psmouse->cleanup = synaptics_reset; 1571 /* Synaptics can usually stay in sync without extra help */ 1572 psmouse->resync_time = 0; 1573 1574 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1575 synaptics_pt_create(psmouse); 1576 1577 /* 1578 * Toshiba's KBC seems to have trouble handling data from 1579 * Synaptics at full rate. Switch to a lower rate (roughly 1580 * the same rate as a standard PS/2 mouse). 1581 */ 1582 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1583 psmouse_info(psmouse, 1584 "Toshiba %s detected, limiting rate to 40pps.\n", 1585 dmi_get_system_info(DMI_PRODUCT_NAME)); 1586 psmouse->rate = 40; 1587 } 1588 1589 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1590 err = device_create_file(&psmouse->ps2dev.serio->dev, 1591 &psmouse_attr_disable_gesture.dattr); 1592 if (err) { 1593 psmouse_err(psmouse, 1594 "Failed to create disable_gesture attribute (%d)", 1595 err); 1596 goto init_fail; 1597 } 1598 } 1599 1600 return 0; 1601 1602 init_fail: 1603 kfree(priv); 1604 return err; 1605 } 1606 1607 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1608 { 1609 struct synaptics_device_info info; 1610 int error; 1611 1612 psmouse_reset(psmouse); 1613 1614 error = synaptics_query_hardware(psmouse, &info); 1615 if (error) { 1616 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1617 return error; 1618 } 1619 1620 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1621 } 1622 1623 int synaptics_init_absolute(struct psmouse *psmouse) 1624 { 1625 return __synaptics_init(psmouse, true); 1626 } 1627 1628 int synaptics_init_relative(struct psmouse *psmouse) 1629 { 1630 return __synaptics_init(psmouse, false); 1631 } 1632 1633 static int synaptics_setup_ps2(struct psmouse *psmouse, 1634 struct synaptics_device_info *info) 1635 { 1636 bool absolute_mode = true; 1637 int error; 1638 1639 /* 1640 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1641 * packet spew overloads the EC such that key presses on the keyboard 1642 * are missed. Given that, don't even attempt to use Absolute mode. 1643 * Relative mode seems to work just fine. 1644 */ 1645 if (broken_olpc_ec) { 1646 psmouse_info(psmouse, 1647 "OLPC XO detected, forcing relative protocol.\n"); 1648 absolute_mode = false; 1649 } 1650 1651 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1652 if (error) 1653 return error; 1654 1655 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1656 } 1657 1658 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1659 1660 void __init synaptics_module_init(void) 1661 { 1662 } 1663 1664 static int __maybe_unused 1665 synaptics_setup_ps2(struct psmouse *psmouse, 1666 struct synaptics_device_info *info) 1667 { 1668 return -ENOSYS; 1669 } 1670 1671 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1672 1673 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1674 1675 /* 1676 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1677 * provides a better bandwidth and allow a better control of the touchpads. 1678 * This is used to decide if we need to use this bus or not. 1679 */ 1680 enum { 1681 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1682 SYNAPTICS_INTERTOUCH_OFF, 1683 SYNAPTICS_INTERTOUCH_ON, 1684 }; 1685 1686 static int synaptics_intertouch = SYNAPTICS_INTERTOUCH_NOT_SET; 1687 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1688 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1689 1690 static int synaptics_create_intertouch(struct psmouse *psmouse, 1691 struct synaptics_device_info *info, 1692 bool leave_breadcrumbs) 1693 { 1694 bool topbuttonpad = 1695 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1696 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1697 const struct rmi_device_platform_data pdata = { 1698 .sensor_pdata = { 1699 .sensor_type = rmi_sensor_touchpad, 1700 .axis_align.flip_y = true, 1701 /* to prevent cursors jumps: */ 1702 .kernel_tracking = true, 1703 .topbuttonpad = topbuttonpad, 1704 }, 1705 .f30_data = { 1706 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1707 .trackstick_buttons = 1708 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1709 }, 1710 }; 1711 const struct i2c_board_info intertouch_board = { 1712 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1713 .flags = I2C_CLIENT_HOST_NOTIFY, 1714 }; 1715 1716 return psmouse_smbus_init(psmouse, &intertouch_board, 1717 &pdata, sizeof(pdata), 1718 leave_breadcrumbs); 1719 } 1720 1721 /** 1722 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1723 * and decides to instantiate a SMBus InterTouch device. 1724 */ 1725 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1726 struct synaptics_device_info *info, 1727 bool leave_breadcrumbs) 1728 { 1729 int error; 1730 1731 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1732 return -ENXIO; 1733 1734 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1735 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1736 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) 1737 return -ENXIO; 1738 } 1739 1740 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1741 1742 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1743 if (error) { 1744 if (error == -EAGAIN) 1745 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1746 else 1747 psmouse_err(psmouse, "unable to create intertouch device\n"); 1748 1749 return error; 1750 } 1751 1752 return 0; 1753 } 1754 1755 int synaptics_init_smbus(struct psmouse *psmouse) 1756 { 1757 struct synaptics_device_info info; 1758 int error; 1759 1760 psmouse_reset(psmouse); 1761 1762 error = synaptics_query_hardware(psmouse, &info); 1763 if (error) { 1764 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1765 return error; 1766 } 1767 1768 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1769 return -ENXIO; 1770 1771 return synaptics_create_intertouch(psmouse, &info, false); 1772 } 1773 1774 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1775 1776 static int __maybe_unused 1777 synaptics_setup_intertouch(struct psmouse *psmouse, 1778 struct synaptics_device_info *info, 1779 bool leave_breadcrumbs) 1780 { 1781 return -ENOSYS; 1782 } 1783 1784 int synaptics_init_smbus(struct psmouse *psmouse) 1785 { 1786 return -ENOSYS; 1787 } 1788 1789 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1790 1791 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1792 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1793 1794 int synaptics_init(struct psmouse *psmouse) 1795 { 1796 struct synaptics_device_info info; 1797 int error; 1798 int retval; 1799 1800 psmouse_reset(psmouse); 1801 1802 error = synaptics_query_hardware(psmouse, &info); 1803 if (error) { 1804 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1805 return error; 1806 } 1807 1808 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1809 error = synaptics_setup_intertouch(psmouse, &info, true); 1810 if (!error) 1811 return PSMOUSE_SYNAPTICS_SMBUS; 1812 } 1813 1814 retval = synaptics_setup_ps2(psmouse, &info); 1815 if (retval < 0) { 1816 /* 1817 * Not using any flavor of Synaptics support, so clean up 1818 * SMbus breadcrumbs, if any. 1819 */ 1820 psmouse_smbus_cleanup(psmouse); 1821 } 1822 1823 return retval; 1824 } 1825 1826 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1827 1828 int synaptics_init(struct psmouse *psmouse) 1829 { 1830 return -ENOSYS; 1831 } 1832 1833 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1834