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 NULL 177 }; 178 179 /* 180 * Send a command to the synpatics touchpad by special commands 181 */ 182 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 183 { 184 int error; 185 186 error = psmouse_sliced_command(psmouse, cmd); 187 if (error) 188 return error; 189 190 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 191 if (error) 192 return error; 193 194 return 0; 195 } 196 197 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 198 { 199 int error; 200 union { 201 __be32 be_val; 202 char buf[4]; 203 } resp = { 0 }; 204 205 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 206 if (error) 207 return error; 208 209 *val = be32_to_cpu(resp.be_val); 210 return 0; 211 } 212 213 /* 214 * Identify Touchpad 215 * See also the SYN_ID_* macros 216 */ 217 static int synaptics_identify(struct psmouse *psmouse, 218 struct synaptics_device_info *info) 219 { 220 int error; 221 222 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 223 if (error) 224 return error; 225 226 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 227 } 228 229 /* 230 * Read the model-id bytes from the touchpad 231 * see also SYN_MODEL_* macros 232 */ 233 static int synaptics_model_id(struct psmouse *psmouse, 234 struct synaptics_device_info *info) 235 { 236 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 237 } 238 239 /* 240 * Read the firmware id from the touchpad 241 */ 242 static int synaptics_firmware_id(struct psmouse *psmouse, 243 struct synaptics_device_info *info) 244 { 245 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 246 &info->firmware_id); 247 } 248 249 /* 250 * Read the board id and the "More Extended Queries" from the touchpad 251 * The board id is encoded in the "QUERY MODES" response 252 */ 253 static int synaptics_query_modes(struct psmouse *psmouse, 254 struct synaptics_device_info *info) 255 { 256 u8 bid[3]; 257 int error; 258 259 /* firmwares prior 7.5 have no board_id encoded */ 260 if (SYN_ID_FULL(info->identity) < 0x705) 261 return 0; 262 263 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 264 if (error) 265 return error; 266 267 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 268 269 if (SYN_MEXT_CAP_BIT(bid[0])) 270 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 271 &info->ext_cap_10); 272 273 return 0; 274 } 275 276 /* 277 * Read the capability-bits from the touchpad 278 * see also the SYN_CAP_* macros 279 */ 280 static int synaptics_capability(struct psmouse *psmouse, 281 struct synaptics_device_info *info) 282 { 283 int error; 284 285 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 286 &info->capabilities); 287 if (error) 288 return error; 289 290 info->ext_cap = info->ext_cap_0c = 0; 291 292 /* 293 * Older firmwares had submodel ID fixed to 0x47 294 */ 295 if (SYN_ID_FULL(info->identity) < 0x705 && 296 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 297 return -ENXIO; 298 } 299 300 /* 301 * Unless capExtended is set the rest of the flags should be ignored 302 */ 303 if (!SYN_CAP_EXTENDED(info->capabilities)) 304 info->capabilities = 0; 305 306 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 307 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 308 &info->ext_cap); 309 if (error) { 310 psmouse_warn(psmouse, 311 "device claims to have extended capabilities, but I'm not able to read them.\n"); 312 } else { 313 /* 314 * if nExtBtn is greater than 8 it should be considered 315 * invalid and treated as 0 316 */ 317 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 318 info->ext_cap &= ~SYN_CAP_MB_MASK; 319 } 320 } 321 322 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 323 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 324 &info->ext_cap_0c); 325 if (error) 326 psmouse_warn(psmouse, 327 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 328 } 329 330 return 0; 331 } 332 333 /* 334 * Read touchpad resolution and maximum reported coordinates 335 * Resolution is left zero if touchpad does not support the query 336 */ 337 static int synaptics_resolution(struct psmouse *psmouse, 338 struct synaptics_device_info *info) 339 { 340 u8 resp[3]; 341 int error; 342 343 if (SYN_ID_MAJOR(info->identity) < 4) 344 return 0; 345 346 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 347 if (!error) { 348 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 349 info->x_res = resp[0]; /* x resolution in units/mm */ 350 info->y_res = resp[2]; /* y resolution in units/mm */ 351 } 352 } 353 354 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 355 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 356 error = synaptics_send_cmd(psmouse, 357 SYN_QUE_EXT_MAX_COORDS, resp); 358 if (error) { 359 psmouse_warn(psmouse, 360 "device claims to have max coordinates query, but I'm not able to read it.\n"); 361 } else { 362 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 363 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 364 psmouse_info(psmouse, 365 "queried max coordinates: x [..%d], y [..%d]\n", 366 info->x_max, info->y_max); 367 } 368 } 369 370 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 371 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 372 /* 373 * Firmware v8.1 does not report proper number of extended 374 * capabilities, but has been proven to report correct min 375 * coordinates. 376 */ 377 SYN_ID_FULL(info->identity) == 0x801)) { 378 error = synaptics_send_cmd(psmouse, 379 SYN_QUE_EXT_MIN_COORDS, resp); 380 if (error) { 381 psmouse_warn(psmouse, 382 "device claims to have min coordinates query, but I'm not able to read it.\n"); 383 } else { 384 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 385 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 386 psmouse_info(psmouse, 387 "queried min coordinates: x [%d..], y [%d..]\n", 388 info->x_min, info->y_min); 389 } 390 } 391 392 return 0; 393 } 394 395 static int synaptics_query_hardware(struct psmouse *psmouse, 396 struct synaptics_device_info *info) 397 { 398 int error; 399 400 error = synaptics_identify(psmouse, info); 401 if (error) 402 return error; 403 404 error = synaptics_model_id(psmouse, info); 405 if (error) 406 return error; 407 408 error = synaptics_firmware_id(psmouse, info); 409 if (error) 410 return error; 411 412 error = synaptics_query_modes(psmouse, info); 413 if (error) 414 return error; 415 416 error = synaptics_capability(psmouse, info); 417 if (error) 418 return error; 419 420 error = synaptics_resolution(psmouse, info); 421 if (error) 422 return error; 423 424 return 0; 425 } 426 427 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 428 429 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 430 431 static bool cr48_profile_sensor; 432 433 #define ANY_BOARD_ID 0 434 struct min_max_quirk { 435 const char * const *pnp_ids; 436 struct { 437 u32 min, max; 438 } board_id; 439 u32 x_min, x_max, y_min, y_max; 440 }; 441 442 static const struct min_max_quirk min_max_pnpid_table[] = { 443 { 444 (const char * const []){"LEN0033", NULL}, 445 {ANY_BOARD_ID, ANY_BOARD_ID}, 446 1024, 5052, 2258, 4832 447 }, 448 { 449 (const char * const []){"LEN0042", NULL}, 450 {ANY_BOARD_ID, ANY_BOARD_ID}, 451 1232, 5710, 1156, 4696 452 }, 453 { 454 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 455 "LEN0039", "LEN2002", "LEN2004", 456 NULL}, 457 {ANY_BOARD_ID, 2961}, 458 1024, 5112, 2024, 4832 459 }, 460 { 461 (const char * const []){"LEN2000", NULL}, 462 {ANY_BOARD_ID, ANY_BOARD_ID}, 463 1024, 5113, 2021, 4832 464 }, 465 { 466 (const char * const []){"LEN2001", NULL}, 467 {ANY_BOARD_ID, ANY_BOARD_ID}, 468 1024, 5022, 2508, 4832 469 }, 470 { 471 (const char * const []){"LEN2006", NULL}, 472 {2691, 2691}, 473 1024, 5045, 2457, 4832 474 }, 475 { 476 (const char * const []){"LEN2006", NULL}, 477 {ANY_BOARD_ID, ANY_BOARD_ID}, 478 1264, 5675, 1171, 4688 479 }, 480 { } 481 }; 482 483 /* This list has been kindly provided by Synaptics. */ 484 static const char * const forcepad_pnp_ids[] = { 485 "SYN300D", 486 "SYN3014", 487 NULL 488 }; 489 490 /***************************************************************************** 491 * Synaptics communications functions 492 ****************************************************************************/ 493 494 /* 495 * Synaptics touchpads report the y coordinate from bottom to top, which is 496 * opposite from what userspace expects. 497 * This function is used to invert y before reporting. 498 */ 499 static int synaptics_invert_y(int y) 500 { 501 return YMAX_NOMINAL + YMIN_NOMINAL - y; 502 } 503 504 /* 505 * Apply quirk(s) if the hardware matches 506 */ 507 static void synaptics_apply_quirks(struct psmouse *psmouse, 508 struct synaptics_device_info *info) 509 { 510 int i; 511 512 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 513 if (!psmouse_matches_pnp_id(psmouse, 514 min_max_pnpid_table[i].pnp_ids)) 515 continue; 516 517 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 518 info->board_id < min_max_pnpid_table[i].board_id.min) 519 continue; 520 521 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 522 info->board_id > min_max_pnpid_table[i].board_id.max) 523 continue; 524 525 info->x_min = min_max_pnpid_table[i].x_min; 526 info->x_max = min_max_pnpid_table[i].x_max; 527 info->y_min = min_max_pnpid_table[i].y_min; 528 info->y_max = min_max_pnpid_table[i].y_max; 529 psmouse_info(psmouse, 530 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 531 info->x_min, info->x_max, 532 info->y_min, info->y_max); 533 break; 534 } 535 } 536 537 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 538 { 539 static u8 param = 0xc8; 540 struct synaptics_data *priv = psmouse->private; 541 int error; 542 543 if (!(SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 544 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c))) 545 return 0; 546 547 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL); 548 if (error) 549 return error; 550 551 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 552 if (error) 553 return error; 554 555 /* Advanced gesture mode also sends multi finger data */ 556 priv->info.capabilities |= BIT(1); 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) { 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 ((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 = (s8)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 & BIT(i)); 926 input_report_key(dev, BTN_1 + 2 * i, 927 hw->ext_buttons & BIT(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 bool synaptics_validate_byte(struct psmouse *psmouse, 1136 int idx, enum synaptics_pkt_type pkt_type) 1137 { 1138 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1139 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1140 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1141 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1142 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1143 const u8 *packet = psmouse->packet; 1144 1145 if (idx < 0 || idx > 4) 1146 return false; 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 false; 1163 } 1164 } 1165 1166 static enum synaptics_pkt_type 1167 synaptics_detect_pkt_type(struct psmouse *psmouse) 1168 { 1169 int i; 1170 1171 for (i = 0; i < 5; i++) { 1172 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1173 psmouse_info(psmouse, "using relaxed packet validation\n"); 1174 return SYN_NEWABS_RELAXED; 1175 } 1176 } 1177 1178 return SYN_NEWABS_STRICT; 1179 } 1180 1181 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1182 { 1183 struct synaptics_data *priv = psmouse->private; 1184 1185 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1186 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1187 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1188 1189 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1190 synaptics_is_pt_packet(psmouse->packet)) { 1191 if (priv->pt_port) 1192 synaptics_pass_pt_packet(priv->pt_port, 1193 psmouse->packet); 1194 } else 1195 synaptics_process_packet(psmouse); 1196 1197 return PSMOUSE_FULL_PACKET; 1198 } 1199 1200 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1201 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1202 } 1203 1204 /***************************************************************************** 1205 * Driver initialization/cleanup functions 1206 ****************************************************************************/ 1207 static void set_abs_position_params(struct input_dev *dev, 1208 struct synaptics_device_info *info, 1209 int x_code, int y_code) 1210 { 1211 int x_min = info->x_min ?: XMIN_NOMINAL; 1212 int x_max = info->x_max ?: XMAX_NOMINAL; 1213 int y_min = info->y_min ?: YMIN_NOMINAL; 1214 int y_max = info->y_max ?: YMAX_NOMINAL; 1215 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1216 SYN_REDUCED_FILTER_FUZZ : 0; 1217 1218 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1219 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1220 input_abs_set_res(dev, x_code, info->x_res); 1221 input_abs_set_res(dev, y_code, info->y_res); 1222 } 1223 1224 static void set_input_params(struct psmouse *psmouse, 1225 struct synaptics_data *priv) 1226 { 1227 struct input_dev *dev = psmouse->dev; 1228 struct synaptics_device_info *info = &priv->info; 1229 int i; 1230 1231 /* Things that apply to both modes */ 1232 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1233 __set_bit(EV_KEY, dev->evbit); 1234 __set_bit(BTN_LEFT, dev->keybit); 1235 __set_bit(BTN_RIGHT, dev->keybit); 1236 1237 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1238 __set_bit(BTN_MIDDLE, dev->keybit); 1239 1240 if (!priv->absolute_mode) { 1241 /* Relative mode */ 1242 __set_bit(EV_REL, dev->evbit); 1243 __set_bit(REL_X, dev->relbit); 1244 __set_bit(REL_Y, dev->relbit); 1245 return; 1246 } 1247 1248 /* Absolute mode */ 1249 __set_bit(EV_ABS, dev->evbit); 1250 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1251 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1252 1253 if (cr48_profile_sensor) 1254 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1255 1256 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1257 set_abs_position_params(dev, info, 1258 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1259 /* Image sensors can report per-contact pressure */ 1260 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1261 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1262 1263 /* Image sensors can signal 4 and 5 finger clicks */ 1264 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1265 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1266 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1267 set_abs_position_params(dev, info, 1268 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1269 /* 1270 * Profile sensor in CR-48 tracks contacts reasonably well, 1271 * other non-image sensors with AGM use semi-mt. 1272 */ 1273 input_mt_init_slots(dev, 2, 1274 INPUT_MT_POINTER | 1275 (cr48_profile_sensor ? 1276 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1277 } 1278 1279 if (SYN_CAP_PALMDETECT(info->capabilities)) 1280 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1281 1282 __set_bit(BTN_TOUCH, dev->keybit); 1283 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1284 1285 if (SYN_CAP_MULTIFINGER(info->capabilities)) { 1286 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1287 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1288 } 1289 1290 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1291 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1292 __set_bit(BTN_FORWARD, dev->keybit); 1293 __set_bit(BTN_BACK, dev->keybit); 1294 } 1295 1296 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1297 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1298 __set_bit(BTN_0 + i, dev->keybit); 1299 1300 __clear_bit(EV_REL, dev->evbit); 1301 __clear_bit(REL_X, dev->relbit); 1302 __clear_bit(REL_Y, dev->relbit); 1303 1304 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1305 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1306 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1307 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1308 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1309 /* Clickpads report only left button */ 1310 __clear_bit(BTN_RIGHT, dev->keybit); 1311 __clear_bit(BTN_MIDDLE, dev->keybit); 1312 } 1313 } 1314 1315 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1316 void *data, char *buf) 1317 { 1318 struct synaptics_data *priv = psmouse->private; 1319 1320 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1321 } 1322 1323 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1324 void *data, const char *buf, 1325 size_t len) 1326 { 1327 struct synaptics_data *priv = psmouse->private; 1328 unsigned int value; 1329 int err; 1330 1331 err = kstrtouint(buf, 10, &value); 1332 if (err) 1333 return err; 1334 1335 if (value > 1) 1336 return -EINVAL; 1337 1338 if (value == priv->disable_gesture) 1339 return len; 1340 1341 priv->disable_gesture = value; 1342 if (value) 1343 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1344 else 1345 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1346 1347 if (synaptics_mode_cmd(psmouse, priv->mode)) 1348 return -EIO; 1349 1350 return len; 1351 } 1352 1353 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1354 synaptics_show_disable_gesture, 1355 synaptics_set_disable_gesture); 1356 1357 static void synaptics_disconnect(struct psmouse *psmouse) 1358 { 1359 struct synaptics_data *priv = psmouse->private; 1360 1361 /* 1362 * We might have left a breadcrumb when trying to 1363 * set up SMbus companion. 1364 */ 1365 psmouse_smbus_cleanup(psmouse); 1366 1367 if (!priv->absolute_mode && 1368 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1369 device_remove_file(&psmouse->ps2dev.serio->dev, 1370 &psmouse_attr_disable_gesture.dattr); 1371 1372 synaptics_reset(psmouse); 1373 kfree(priv); 1374 psmouse->private = NULL; 1375 } 1376 1377 static int synaptics_reconnect(struct psmouse *psmouse) 1378 { 1379 struct synaptics_data *priv = psmouse->private; 1380 struct synaptics_device_info info; 1381 u8 param[2]; 1382 int retry = 0; 1383 int error; 1384 1385 do { 1386 psmouse_reset(psmouse); 1387 if (retry) { 1388 /* 1389 * On some boxes, right after resuming, the touchpad 1390 * needs some time to finish initializing (I assume 1391 * it needs time to calibrate) and start responding 1392 * to Synaptics-specific queries, so let's wait a 1393 * bit. 1394 */ 1395 ssleep(1); 1396 } 1397 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1398 error = synaptics_detect(psmouse, 0); 1399 } while (error && ++retry < 3); 1400 1401 if (error) 1402 return error; 1403 1404 if (retry > 1) 1405 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1406 1407 error = synaptics_query_hardware(psmouse, &info); 1408 if (error) { 1409 psmouse_err(psmouse, "Unable to query device.\n"); 1410 return error; 1411 } 1412 1413 error = synaptics_set_mode(psmouse); 1414 if (error) { 1415 psmouse_err(psmouse, "Unable to initialize device.\n"); 1416 return error; 1417 } 1418 1419 if (info.identity != priv->info.identity || 1420 info.model_id != priv->info.model_id || 1421 info.capabilities != priv->info.capabilities || 1422 info.ext_cap != priv->info.ext_cap) { 1423 psmouse_err(psmouse, 1424 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1425 priv->info.identity, info.identity, 1426 priv->info.model_id, info.model_id, 1427 priv->info.capabilities, info.capabilities, 1428 priv->info.ext_cap, info.ext_cap); 1429 return -ENXIO; 1430 } 1431 1432 return 0; 1433 } 1434 1435 static bool impaired_toshiba_kbc; 1436 1437 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1438 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1439 { 1440 /* Toshiba Satellite */ 1441 .matches = { 1442 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1443 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1444 }, 1445 }, 1446 { 1447 /* Toshiba Dynabook */ 1448 .matches = { 1449 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1450 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1451 }, 1452 }, 1453 { 1454 /* Toshiba Portege M300 */ 1455 .matches = { 1456 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1457 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1458 }, 1459 1460 }, 1461 { 1462 /* Toshiba Portege M300 */ 1463 .matches = { 1464 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1465 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1466 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1467 }, 1468 1469 }, 1470 #endif 1471 { } 1472 }; 1473 1474 static bool broken_olpc_ec; 1475 1476 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1477 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1478 { 1479 /* OLPC XO-1 or XO-1.5 */ 1480 .matches = { 1481 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1482 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1483 }, 1484 }, 1485 #endif 1486 { } 1487 }; 1488 1489 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1490 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1491 { 1492 /* Cr-48 Chromebook (Codename Mario) */ 1493 .matches = { 1494 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1495 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1496 }, 1497 }, 1498 #endif 1499 { } 1500 }; 1501 1502 void __init synaptics_module_init(void) 1503 { 1504 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1505 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1506 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1507 } 1508 1509 static int synaptics_init_ps2(struct psmouse *psmouse, 1510 struct synaptics_device_info *info, 1511 bool absolute_mode) 1512 { 1513 struct synaptics_data *priv; 1514 int err; 1515 1516 synaptics_apply_quirks(psmouse, info); 1517 1518 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1519 if (!priv) 1520 return -ENOMEM; 1521 1522 priv->info = *info; 1523 priv->absolute_mode = absolute_mode; 1524 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1525 priv->disable_gesture = true; 1526 1527 /* 1528 * Unfortunately ForcePad capability is not exported over PS/2, 1529 * so we have to resort to checking PNP IDs. 1530 */ 1531 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1532 1533 err = synaptics_set_mode(psmouse); 1534 if (err) { 1535 psmouse_err(psmouse, "Unable to initialize device.\n"); 1536 goto init_fail; 1537 } 1538 1539 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1540 SYN_NEWABS : SYN_OLDABS; 1541 1542 psmouse_info(psmouse, 1543 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1544 SYN_ID_MODEL(info->identity), 1545 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1546 info->model_id, 1547 info->capabilities, info->ext_cap, info->ext_cap_0c, 1548 info->ext_cap_10, info->board_id, info->firmware_id); 1549 1550 set_input_params(psmouse, priv); 1551 1552 /* 1553 * Encode touchpad model so that it can be used to set 1554 * input device->id.version and be visible to userspace. 1555 * Because version is __u16 we have to drop something. 1556 * Hardware info bits seem to be good candidates as they 1557 * are documented to be for Synaptics corp. internal use. 1558 */ 1559 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1560 (info->model_id & 0x000000ff); 1561 1562 if (absolute_mode) { 1563 psmouse->protocol_handler = synaptics_process_byte; 1564 psmouse->pktsize = 6; 1565 } else { 1566 /* Relative mode follows standard PS/2 mouse protocol */ 1567 psmouse->protocol_handler = psmouse_process_byte; 1568 psmouse->pktsize = 3; 1569 } 1570 1571 psmouse->set_rate = synaptics_set_rate; 1572 psmouse->disconnect = synaptics_disconnect; 1573 psmouse->reconnect = synaptics_reconnect; 1574 psmouse->cleanup = synaptics_reset; 1575 /* Synaptics can usually stay in sync without extra help */ 1576 psmouse->resync_time = 0; 1577 1578 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1579 synaptics_pt_create(psmouse); 1580 1581 /* 1582 * Toshiba's KBC seems to have trouble handling data from 1583 * Synaptics at full rate. Switch to a lower rate (roughly 1584 * the same rate as a standard PS/2 mouse). 1585 */ 1586 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1587 psmouse_info(psmouse, 1588 "Toshiba %s detected, limiting rate to 40pps.\n", 1589 dmi_get_system_info(DMI_PRODUCT_NAME)); 1590 psmouse->rate = 40; 1591 } 1592 1593 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1594 err = device_create_file(&psmouse->ps2dev.serio->dev, 1595 &psmouse_attr_disable_gesture.dattr); 1596 if (err) { 1597 psmouse_err(psmouse, 1598 "Failed to create disable_gesture attribute (%d)", 1599 err); 1600 goto init_fail; 1601 } 1602 } 1603 1604 return 0; 1605 1606 init_fail: 1607 kfree(priv); 1608 return err; 1609 } 1610 1611 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1612 { 1613 struct synaptics_device_info info; 1614 int error; 1615 1616 psmouse_reset(psmouse); 1617 1618 error = synaptics_query_hardware(psmouse, &info); 1619 if (error) { 1620 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1621 return error; 1622 } 1623 1624 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1625 } 1626 1627 int synaptics_init_absolute(struct psmouse *psmouse) 1628 { 1629 return __synaptics_init(psmouse, true); 1630 } 1631 1632 int synaptics_init_relative(struct psmouse *psmouse) 1633 { 1634 return __synaptics_init(psmouse, false); 1635 } 1636 1637 static int synaptics_setup_ps2(struct psmouse *psmouse, 1638 struct synaptics_device_info *info) 1639 { 1640 bool absolute_mode = true; 1641 int error; 1642 1643 /* 1644 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1645 * packet spew overloads the EC such that key presses on the keyboard 1646 * are missed. Given that, don't even attempt to use Absolute mode. 1647 * Relative mode seems to work just fine. 1648 */ 1649 if (broken_olpc_ec) { 1650 psmouse_info(psmouse, 1651 "OLPC XO detected, forcing relative protocol.\n"); 1652 absolute_mode = false; 1653 } 1654 1655 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1656 if (error) 1657 return error; 1658 1659 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1660 } 1661 1662 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1663 1664 void __init synaptics_module_init(void) 1665 { 1666 } 1667 1668 static int __maybe_unused 1669 synaptics_setup_ps2(struct psmouse *psmouse, 1670 struct synaptics_device_info *info) 1671 { 1672 return -ENOSYS; 1673 } 1674 1675 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1676 1677 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1678 1679 /* 1680 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1681 * provides a better bandwidth and allow a better control of the touchpads. 1682 * This is used to decide if we need to use this bus or not. 1683 */ 1684 enum { 1685 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1686 SYNAPTICS_INTERTOUCH_OFF, 1687 SYNAPTICS_INTERTOUCH_ON, 1688 }; 1689 1690 static int synaptics_intertouch = SYNAPTICS_INTERTOUCH_NOT_SET; 1691 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1692 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1693 1694 static int synaptics_create_intertouch(struct psmouse *psmouse, 1695 struct synaptics_device_info *info, 1696 bool leave_breadcrumbs) 1697 { 1698 bool topbuttonpad = 1699 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1700 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1701 const struct rmi_device_platform_data pdata = { 1702 .sensor_pdata = { 1703 .sensor_type = rmi_sensor_touchpad, 1704 .axis_align.flip_y = true, 1705 /* to prevent cursors jumps: */ 1706 .kernel_tracking = true, 1707 .topbuttonpad = topbuttonpad, 1708 }, 1709 .f30_data = { 1710 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1711 .trackstick_buttons = 1712 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1713 }, 1714 }; 1715 const struct i2c_board_info intertouch_board = { 1716 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1717 .flags = I2C_CLIENT_HOST_NOTIFY, 1718 }; 1719 1720 return psmouse_smbus_init(psmouse, &intertouch_board, 1721 &pdata, sizeof(pdata), 1722 leave_breadcrumbs); 1723 } 1724 1725 /** 1726 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1727 * and decides to instantiate a SMBus InterTouch device. 1728 */ 1729 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1730 struct synaptics_device_info *info, 1731 bool leave_breadcrumbs) 1732 { 1733 int error; 1734 1735 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1736 return -ENXIO; 1737 1738 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1739 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1740 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) 1741 return -ENXIO; 1742 } 1743 1744 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1745 1746 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1747 if (error) { 1748 if (error == -EAGAIN) 1749 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1750 else 1751 psmouse_err(psmouse, "unable to create intertouch device\n"); 1752 1753 return error; 1754 } 1755 1756 return 0; 1757 } 1758 1759 int synaptics_init_smbus(struct psmouse *psmouse) 1760 { 1761 struct synaptics_device_info info; 1762 int error; 1763 1764 psmouse_reset(psmouse); 1765 1766 error = synaptics_query_hardware(psmouse, &info); 1767 if (error) { 1768 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1769 return error; 1770 } 1771 1772 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1773 return -ENXIO; 1774 1775 return synaptics_create_intertouch(psmouse, &info, false); 1776 } 1777 1778 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1779 1780 static int __maybe_unused 1781 synaptics_setup_intertouch(struct psmouse *psmouse, 1782 struct synaptics_device_info *info, 1783 bool leave_breadcrumbs) 1784 { 1785 return -ENOSYS; 1786 } 1787 1788 int synaptics_init_smbus(struct psmouse *psmouse) 1789 { 1790 return -ENOSYS; 1791 } 1792 1793 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1794 1795 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1796 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1797 1798 int synaptics_init(struct psmouse *psmouse) 1799 { 1800 struct synaptics_device_info info; 1801 int error; 1802 int retval; 1803 1804 psmouse_reset(psmouse); 1805 1806 error = synaptics_query_hardware(psmouse, &info); 1807 if (error) { 1808 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1809 return error; 1810 } 1811 1812 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1813 error = synaptics_setup_intertouch(psmouse, &info, true); 1814 if (!error) 1815 return PSMOUSE_SYNAPTICS_SMBUS; 1816 } 1817 1818 retval = synaptics_setup_ps2(psmouse, &info); 1819 if (retval < 0) { 1820 /* 1821 * Not using any flavor of Synaptics support, so clean up 1822 * SMbus breadcrumbs, if any. 1823 */ 1824 psmouse_smbus_cleanup(psmouse); 1825 } 1826 1827 return retval; 1828 } 1829 1830 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1831 1832 int synaptics_init(struct psmouse *psmouse) 1833 { 1834 return -ENOSYS; 1835 } 1836 1837 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1838