1 /* 2 * Synaptics TouchPad PS/2 mouse driver 3 * 4 * 2003 Dmitry Torokhov <dtor@mail.ru> 5 * Added support for pass-through port. Special thanks to Peter Berg Larsen 6 * for explaining various Synaptics quirks. 7 * 8 * 2003 Peter Osterlund <petero2@telia.com> 9 * Ported to 2.5 input device infrastructure. 10 * 11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 12 * start merging tpconfig and gpm code to a xfree-input module 13 * adding some changes and extensions (ex. 3rd and 4th button) 14 * 15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 17 * code for the special synaptics commands (from the tpconfig-source) 18 * 19 * This program is free software; you can redistribute it and/or modify it 20 * under the terms of the GNU General Public License version 2 as published by 21 * the Free Software Foundation. 22 * 23 * Trademarks are the property of their respective owners. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/delay.h> 28 #include <linux/dmi.h> 29 #include <linux/input/mt.h> 30 #include <linux/serio.h> 31 #include <linux/libps2.h> 32 #include <linux/rmi.h> 33 #include <linux/i2c.h> 34 #include <linux/slab.h> 35 #include "psmouse.h" 36 #include "synaptics.h" 37 38 /* 39 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 40 * section 2.3.2, which says that they should be valid regardless of the 41 * actual size of the sensor. 42 * Note that newer firmware allows querying device for maximum useable 43 * coordinates. 44 */ 45 #define XMIN 0 46 #define XMAX 6143 47 #define YMIN 0 48 #define YMAX 6143 49 #define XMIN_NOMINAL 1472 50 #define XMAX_NOMINAL 5472 51 #define YMIN_NOMINAL 1408 52 #define YMAX_NOMINAL 4448 53 54 /* Size in bits of absolute position values reported by the hardware */ 55 #define ABS_POS_BITS 13 56 57 /* 58 * These values should represent the absolute maximum value that will 59 * be reported for a positive position value. Some Synaptics firmware 60 * uses this value to indicate a finger near the edge of the touchpad 61 * whose precise position cannot be determined. 62 * 63 * At least one touchpad is known to report positions in excess of this 64 * value which are actually negative values truncated to the 13-bit 65 * reporting range. These values have never been observed to be lower 66 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 67 * negative and any other value as positive. 68 */ 69 #define X_MAX_POSITIVE 8176 70 #define Y_MAX_POSITIVE 8176 71 72 /* maximum ABS_MT_POSITION displacement (in mm) */ 73 #define DMAX 10 74 75 /***************************************************************************** 76 * Stuff we need even when we do not want native Synaptics support 77 ****************************************************************************/ 78 79 /* 80 * Set the synaptics touchpad mode byte by special commands 81 */ 82 static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode) 83 { 84 u8 param[1]; 85 int error; 86 87 error = ps2_sliced_command(&psmouse->ps2dev, mode); 88 if (error) 89 return error; 90 91 param[0] = SYN_PS_SET_MODE2; 92 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); 93 if (error) 94 return error; 95 96 return 0; 97 } 98 99 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 100 { 101 struct ps2dev *ps2dev = &psmouse->ps2dev; 102 u8 param[4]; 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 static const char * const forcepad_pnp_ids[] = { 180 "SYN300D", 181 "SYN3014", 182 NULL 183 }; 184 185 /* 186 * Send a command to the synpatics touchpad by special commands 187 */ 188 static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) 189 { 190 int error; 191 192 error = ps2_sliced_command(&psmouse->ps2dev, cmd); 193 if (error) 194 return error; 195 196 error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); 197 if (error) 198 return error; 199 200 return 0; 201 } 202 203 static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) 204 { 205 int error; 206 union { 207 __be32 be_val; 208 char buf[4]; 209 } resp = { 0 }; 210 211 error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); 212 if (error) 213 return error; 214 215 *val = be32_to_cpu(resp.be_val); 216 return 0; 217 } 218 219 /* 220 * Identify Touchpad 221 * See also the SYN_ID_* macros 222 */ 223 static int synaptics_identify(struct psmouse *psmouse, 224 struct synaptics_device_info *info) 225 { 226 int error; 227 228 error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); 229 if (error) 230 return error; 231 232 return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; 233 } 234 235 /* 236 * Read the model-id bytes from the touchpad 237 * see also SYN_MODEL_* macros 238 */ 239 static int synaptics_model_id(struct psmouse *psmouse, 240 struct synaptics_device_info *info) 241 { 242 return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); 243 } 244 245 /* 246 * Read the firmware id from the touchpad 247 */ 248 static int synaptics_firmware_id(struct psmouse *psmouse, 249 struct synaptics_device_info *info) 250 { 251 return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, 252 &info->firmware_id); 253 } 254 255 /* 256 * Read the board id and the "More Extended Queries" from the touchpad 257 * The board id is encoded in the "QUERY MODES" response 258 */ 259 static int synaptics_query_modes(struct psmouse *psmouse, 260 struct synaptics_device_info *info) 261 { 262 u8 bid[3]; 263 int error; 264 265 /* firmwares prior 7.5 have no board_id encoded */ 266 if (SYN_ID_FULL(info->identity) < 0x705) 267 return 0; 268 269 error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); 270 if (error) 271 return error; 272 273 info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 274 275 if (SYN_MEXT_CAP_BIT(bid[0])) 276 return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, 277 &info->ext_cap_10); 278 279 return 0; 280 } 281 282 /* 283 * Read the capability-bits from the touchpad 284 * see also the SYN_CAP_* macros 285 */ 286 static int synaptics_capability(struct psmouse *psmouse, 287 struct synaptics_device_info *info) 288 { 289 int error; 290 291 error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, 292 &info->capabilities); 293 if (error) 294 return error; 295 296 info->ext_cap = info->ext_cap_0c = 0; 297 298 /* 299 * Older firmwares had submodel ID fixed to 0x47 300 */ 301 if (SYN_ID_FULL(info->identity) < 0x705 && 302 SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { 303 return -ENXIO; 304 } 305 306 /* 307 * Unless capExtended is set the rest of the flags should be ignored 308 */ 309 if (!SYN_CAP_EXTENDED(info->capabilities)) 310 info->capabilities = 0; 311 312 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { 313 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, 314 &info->ext_cap); 315 if (error) { 316 psmouse_warn(psmouse, 317 "device claims to have extended capabilities, but I'm not able to read them.\n"); 318 } else { 319 /* 320 * if nExtBtn is greater than 8 it should be considered 321 * invalid and treated as 0 322 */ 323 if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) 324 info->ext_cap &= ~SYN_CAP_MB_MASK; 325 } 326 } 327 328 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { 329 error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, 330 &info->ext_cap_0c); 331 if (error) 332 psmouse_warn(psmouse, 333 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 334 } 335 336 return 0; 337 } 338 339 /* 340 * Read touchpad resolution and maximum reported coordinates 341 * Resolution is left zero if touchpad does not support the query 342 */ 343 static int synaptics_resolution(struct psmouse *psmouse, 344 struct synaptics_device_info *info) 345 { 346 u8 resp[3]; 347 int error; 348 349 if (SYN_ID_MAJOR(info->identity) < 4) 350 return 0; 351 352 error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); 353 if (!error) { 354 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 355 info->x_res = resp[0]; /* x resolution in units/mm */ 356 info->y_res = resp[2]; /* y resolution in units/mm */ 357 } 358 } 359 360 if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && 361 SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { 362 error = synaptics_send_cmd(psmouse, 363 SYN_QUE_EXT_MAX_COORDS, resp); 364 if (error) { 365 psmouse_warn(psmouse, 366 "device claims to have max coordinates query, but I'm not able to read it.\n"); 367 } else { 368 info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 369 info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 370 psmouse_info(psmouse, 371 "queried max coordinates: x [..%d], y [..%d]\n", 372 info->x_max, info->y_max); 373 } 374 } 375 376 if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && 377 (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || 378 /* 379 * Firmware v8.1 does not report proper number of extended 380 * capabilities, but has been proven to report correct min 381 * coordinates. 382 */ 383 SYN_ID_FULL(info->identity) == 0x801)) { 384 error = synaptics_send_cmd(psmouse, 385 SYN_QUE_EXT_MIN_COORDS, resp); 386 if (error) { 387 psmouse_warn(psmouse, 388 "device claims to have min coordinates query, but I'm not able to read it.\n"); 389 } else { 390 info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 391 info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 392 psmouse_info(psmouse, 393 "queried min coordinates: x [%d..], y [%d..]\n", 394 info->x_min, info->y_min); 395 } 396 } 397 398 return 0; 399 } 400 401 static int synaptics_query_hardware(struct psmouse *psmouse, 402 struct synaptics_device_info *info) 403 { 404 int error; 405 406 memset(info, 0, sizeof(*info)); 407 408 error = synaptics_identify(psmouse, info); 409 if (error) 410 return error; 411 412 error = synaptics_model_id(psmouse, info); 413 if (error) 414 return error; 415 416 error = synaptics_firmware_id(psmouse, info); 417 if (error) 418 return error; 419 420 error = synaptics_query_modes(psmouse, info); 421 if (error) 422 return error; 423 424 error = synaptics_capability(psmouse, info); 425 if (error) 426 return error; 427 428 error = synaptics_resolution(psmouse, info); 429 if (error) 430 return error; 431 432 return 0; 433 } 434 435 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 436 437 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 438 439 static bool cr48_profile_sensor; 440 441 #define ANY_BOARD_ID 0 442 struct min_max_quirk { 443 const char * const *pnp_ids; 444 struct { 445 u32 min, max; 446 } board_id; 447 u32 x_min, x_max, y_min, y_max; 448 }; 449 450 static const struct min_max_quirk min_max_pnpid_table[] = { 451 { 452 (const char * const []){"LEN0033", NULL}, 453 {ANY_BOARD_ID, ANY_BOARD_ID}, 454 1024, 5052, 2258, 4832 455 }, 456 { 457 (const char * const []){"LEN0042", NULL}, 458 {ANY_BOARD_ID, ANY_BOARD_ID}, 459 1232, 5710, 1156, 4696 460 }, 461 { 462 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 463 "LEN0039", "LEN2002", "LEN2004", 464 NULL}, 465 {ANY_BOARD_ID, 2961}, 466 1024, 5112, 2024, 4832 467 }, 468 { 469 (const char * const []){"LEN2000", NULL}, 470 {ANY_BOARD_ID, ANY_BOARD_ID}, 471 1024, 5113, 2021, 4832 472 }, 473 { 474 (const char * const []){"LEN2001", NULL}, 475 {ANY_BOARD_ID, ANY_BOARD_ID}, 476 1024, 5022, 2508, 4832 477 }, 478 { 479 (const char * const []){"LEN2006", NULL}, 480 {2691, 2691}, 481 1024, 5045, 2457, 4832 482 }, 483 { 484 (const char * const []){"LEN2006", NULL}, 485 {ANY_BOARD_ID, ANY_BOARD_ID}, 486 1264, 5675, 1171, 4688 487 }, 488 { } 489 }; 490 491 /***************************************************************************** 492 * Synaptics communications functions 493 ****************************************************************************/ 494 495 /* 496 * Synaptics touchpads report the y coordinate from bottom to top, which is 497 * opposite from what userspace expects. 498 * This function is used to invert y before reporting. 499 */ 500 static int synaptics_invert_y(int y) 501 { 502 return YMAX_NOMINAL + YMIN_NOMINAL - y; 503 } 504 505 /* 506 * Apply quirk(s) if the hardware matches 507 */ 508 static void synaptics_apply_quirks(struct psmouse *psmouse, 509 struct synaptics_device_info *info) 510 { 511 int i; 512 513 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 514 if (!psmouse_matches_pnp_id(psmouse, 515 min_max_pnpid_table[i].pnp_ids)) 516 continue; 517 518 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 519 info->board_id < min_max_pnpid_table[i].board_id.min) 520 continue; 521 522 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 523 info->board_id > min_max_pnpid_table[i].board_id.max) 524 continue; 525 526 info->x_min = min_max_pnpid_table[i].x_min; 527 info->x_max = min_max_pnpid_table[i].x_max; 528 info->y_min = min_max_pnpid_table[i].y_min; 529 info->y_max = min_max_pnpid_table[i].y_max; 530 psmouse_info(psmouse, 531 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 532 info->x_min, info->x_max, 533 info->y_min, info->y_max); 534 break; 535 } 536 } 537 538 static bool synaptics_has_agm(struct synaptics_data *priv) 539 { 540 return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 541 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); 542 } 543 544 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 545 { 546 static u8 param = 0xc8; 547 int error; 548 549 error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); 550 if (error) 551 return error; 552 553 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 554 if (error) 555 return error; 556 557 return 0; 558 } 559 560 static int synaptics_set_mode(struct psmouse *psmouse) 561 { 562 struct synaptics_data *priv = psmouse->private; 563 int error; 564 565 priv->mode = 0; 566 if (priv->absolute_mode) 567 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 568 if (priv->disable_gesture) 569 priv->mode |= SYN_BIT_DISABLE_GESTURE; 570 if (psmouse->rate >= 80) 571 priv->mode |= SYN_BIT_HIGH_RATE; 572 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 573 priv->mode |= SYN_BIT_W_MODE; 574 575 error = synaptics_mode_cmd(psmouse, priv->mode); 576 if (error) 577 return error; 578 579 if (priv->absolute_mode && synaptics_has_agm(priv)) { 580 error = synaptics_set_advanced_gesture_mode(psmouse); 581 if (error) { 582 psmouse_err(psmouse, 583 "Advanced gesture mode init failed: %d\n", 584 error); 585 return error; 586 } 587 } 588 589 return 0; 590 } 591 592 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 593 { 594 struct synaptics_data *priv = psmouse->private; 595 596 if (rate >= 80) { 597 priv->mode |= SYN_BIT_HIGH_RATE; 598 psmouse->rate = 80; 599 } else { 600 priv->mode &= ~SYN_BIT_HIGH_RATE; 601 psmouse->rate = 40; 602 } 603 604 synaptics_mode_cmd(psmouse, priv->mode); 605 } 606 607 /***************************************************************************** 608 * Synaptics pass-through PS/2 port support 609 ****************************************************************************/ 610 static int synaptics_pt_write(struct serio *serio, u8 c) 611 { 612 struct psmouse *parent = serio_get_drvdata(serio->parent); 613 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 614 int error; 615 616 error = ps2_sliced_command(&parent->ps2dev, c); 617 if (error) 618 return error; 619 620 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 621 if (error) 622 return error; 623 624 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(u8 *buf) 650 { 651 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 652 } 653 654 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet) 655 { 656 struct psmouse *child = serio_get_drvdata(ptport); 657 658 if (child && child->state == PSMOUSE_ACTIVATED) { 659 serio_interrupt(ptport, packet[1], 0); 660 serio_interrupt(ptport, packet[4], 0); 661 serio_interrupt(ptport, packet[5], 0); 662 if (child->pktsize == 4) 663 serio_interrupt(ptport, packet[2], 0); 664 } else { 665 serio_interrupt(ptport, packet[1], 0); 666 } 667 } 668 669 static void synaptics_pt_activate(struct psmouse *psmouse) 670 { 671 struct synaptics_data *priv = psmouse->private; 672 struct psmouse *child = serio_get_drvdata(priv->pt_port); 673 674 /* adjust the touchpad to child's choice of protocol */ 675 if (child) { 676 if (child->pktsize == 4) 677 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 678 else 679 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 680 681 if (synaptics_mode_cmd(psmouse, priv->mode)) 682 psmouse_warn(psmouse, 683 "failed to switch guest protocol\n"); 684 } 685 } 686 687 static void synaptics_pt_create(struct psmouse *psmouse) 688 { 689 struct serio *serio; 690 691 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 692 if (!serio) { 693 psmouse_err(psmouse, 694 "not enough memory for pass-through port\n"); 695 return; 696 } 697 698 serio->id.type = SERIO_PS_PSTHRU; 699 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 700 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 701 serio->write = synaptics_pt_write; 702 serio->start = synaptics_pt_start; 703 serio->stop = synaptics_pt_stop; 704 serio->parent = psmouse->ps2dev.serio; 705 706 psmouse->pt_activate = synaptics_pt_activate; 707 708 psmouse_info(psmouse, "serio: %s port at %s\n", 709 serio->name, psmouse->phys); 710 serio_register_port(serio); 711 } 712 713 /***************************************************************************** 714 * Functions to interpret the absolute mode packets 715 ****************************************************************************/ 716 717 static void synaptics_parse_agm(const u8 buf[], 718 struct synaptics_data *priv, 719 struct synaptics_hw_state *hw) 720 { 721 struct synaptics_hw_state *agm = &priv->agm; 722 int agm_packet_type; 723 724 agm_packet_type = (buf[5] & 0x30) >> 4; 725 switch (agm_packet_type) { 726 case 1: 727 /* Gesture packet: (x, y, z) half resolution */ 728 agm->w = hw->w; 729 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 730 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 731 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 732 break; 733 734 case 2: 735 /* AGM-CONTACT packet: we are only interested in the count */ 736 priv->agm_count = buf[1]; 737 break; 738 739 default: 740 break; 741 } 742 } 743 744 static void synaptics_parse_ext_buttons(const u8 buf[], 745 struct synaptics_data *priv, 746 struct synaptics_hw_state *hw) 747 { 748 unsigned int ext_bits = 749 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 750 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 751 752 hw->ext_buttons = buf[4] & ext_mask; 753 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 754 } 755 756 static int synaptics_parse_hw_state(const u8 buf[], 757 struct synaptics_data *priv, 758 struct synaptics_hw_state *hw) 759 { 760 memset(hw, 0, sizeof(struct synaptics_hw_state)); 761 762 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 763 hw->w = (((buf[0] & 0x30) >> 2) | 764 ((buf[0] & 0x04) >> 1) | 765 ((buf[3] & 0x04) >> 2)); 766 767 if (synaptics_has_agm(priv) && hw->w == 2) { 768 synaptics_parse_agm(buf, priv, hw); 769 return 1; 770 } 771 772 hw->x = (((buf[3] & 0x10) << 8) | 773 ((buf[1] & 0x0f) << 8) | 774 buf[4]); 775 hw->y = (((buf[3] & 0x20) << 7) | 776 ((buf[1] & 0xf0) << 4) | 777 buf[5]); 778 hw->z = buf[2]; 779 780 hw->left = (buf[0] & 0x01) ? 1 : 0; 781 hw->right = (buf[0] & 0x02) ? 1 : 0; 782 783 if (priv->is_forcepad) { 784 /* 785 * ForcePads, like Clickpads, use middle button 786 * bits to report primary button clicks. 787 * Unfortunately they report primary button not 788 * only when user presses on the pad above certain 789 * threshold, but also when there are more than one 790 * finger on the touchpad, which interferes with 791 * out multi-finger gestures. 792 */ 793 if (hw->z == 0) { 794 /* No contacts */ 795 priv->press = priv->report_press = false; 796 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 797 /* 798 * Single-finger touch with pressure above 799 * the threshold. If pressure stays long 800 * enough, we'll start reporting primary 801 * button. We rely on the device continuing 802 * sending data even if finger does not 803 * move. 804 */ 805 if (!priv->press) { 806 priv->press_start = jiffies; 807 priv->press = true; 808 } else if (time_after(jiffies, 809 priv->press_start + 810 msecs_to_jiffies(50))) { 811 priv->report_press = true; 812 } 813 } else { 814 priv->press = false; 815 } 816 817 hw->left = priv->report_press; 818 819 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 820 /* 821 * Clickpad's button is transmitted as middle button, 822 * however, since it is primary button, we will report 823 * it as BTN_LEFT. 824 */ 825 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 826 827 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 828 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 829 if (hw->w == 2) 830 hw->scroll = (s8)buf[1]; 831 } 832 833 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 834 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 835 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 836 } 837 838 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 839 ((buf[0] ^ buf[3]) & 0x02)) { 840 synaptics_parse_ext_buttons(buf, priv, hw); 841 } 842 } else { 843 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 844 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 845 846 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 847 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 848 849 hw->left = (buf[0] & 0x01) ? 1 : 0; 850 hw->right = (buf[0] & 0x02) ? 1 : 0; 851 } 852 853 /* 854 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 855 * is used by some firmware to indicate a finger at the edge of 856 * the touchpad whose precise position cannot be determined, so 857 * convert these values to the maximum axis value. 858 */ 859 if (hw->x > X_MAX_POSITIVE) 860 hw->x -= 1 << ABS_POS_BITS; 861 else if (hw->x == X_MAX_POSITIVE) 862 hw->x = XMAX; 863 864 if (hw->y > Y_MAX_POSITIVE) 865 hw->y -= 1 << ABS_POS_BITS; 866 else if (hw->y == Y_MAX_POSITIVE) 867 hw->y = YMAX; 868 869 return 0; 870 } 871 872 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 873 bool active, int x, int y) 874 { 875 input_mt_slot(dev, slot); 876 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 877 if (active) { 878 input_report_abs(dev, ABS_MT_POSITION_X, x); 879 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 880 } 881 } 882 883 static void synaptics_report_semi_mt_data(struct input_dev *dev, 884 const struct synaptics_hw_state *a, 885 const struct synaptics_hw_state *b, 886 int num_fingers) 887 { 888 if (num_fingers >= 2) { 889 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 890 min(a->y, b->y)); 891 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 892 max(a->y, b->y)); 893 } else if (num_fingers == 1) { 894 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 895 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 896 } else { 897 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 898 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 899 } 900 } 901 902 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 903 const struct synaptics_hw_state *hw) 904 { 905 struct input_dev *dev = psmouse->dev; 906 struct synaptics_data *priv = psmouse->private; 907 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 908 int i; 909 910 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 911 return; 912 913 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 914 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 915 SYN_ID_FULL(priv->info.identity) == 0x802) && 916 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 917 return; 918 919 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 920 for (i = 0; i < ext_bits; i++) { 921 input_report_key(dev, BTN_0 + 2 * i, 922 hw->ext_buttons & BIT(i)); 923 input_report_key(dev, BTN_1 + 2 * i, 924 hw->ext_buttons & BIT(i + ext_bits)); 925 } 926 return; 927 } 928 929 /* 930 * This generation of touchpads has the trackstick buttons 931 * physically wired to the touchpad. Re-route them through 932 * the pass-through interface. 933 */ 934 if (priv->pt_port) { 935 u8 pt_buttons; 936 937 /* The trackstick expects at most 3 buttons */ 938 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 939 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 940 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 941 942 serio_interrupt(priv->pt_port, 943 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 944 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 945 } 946 } 947 948 static void synaptics_report_buttons(struct psmouse *psmouse, 949 const struct synaptics_hw_state *hw) 950 { 951 struct input_dev *dev = psmouse->dev; 952 struct synaptics_data *priv = psmouse->private; 953 954 input_report_key(dev, BTN_LEFT, hw->left); 955 input_report_key(dev, BTN_RIGHT, hw->right); 956 957 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 958 input_report_key(dev, BTN_MIDDLE, hw->middle); 959 960 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 961 input_report_key(dev, BTN_FORWARD, hw->up); 962 input_report_key(dev, BTN_BACK, hw->down); 963 } 964 965 synaptics_report_ext_buttons(psmouse, hw); 966 } 967 968 static void synaptics_report_mt_data(struct psmouse *psmouse, 969 const struct synaptics_hw_state *sgm, 970 int num_fingers) 971 { 972 struct input_dev *dev = psmouse->dev; 973 struct synaptics_data *priv = psmouse->private; 974 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 975 struct input_mt_pos pos[2]; 976 int slot[2], nsemi, i; 977 978 nsemi = clamp_val(num_fingers, 0, 2); 979 980 for (i = 0; i < nsemi; i++) { 981 pos[i].x = hw[i]->x; 982 pos[i].y = synaptics_invert_y(hw[i]->y); 983 } 984 985 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 986 987 for (i = 0; i < nsemi; i++) { 988 input_mt_slot(dev, slot[i]); 989 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 990 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 991 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 992 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 993 } 994 995 input_mt_drop_unused(dev); 996 997 /* Don't use active slot count to generate BTN_TOOL events. */ 998 input_mt_report_pointer_emulation(dev, false); 999 1000 /* Send the number of fingers reported by touchpad itself. */ 1001 input_mt_report_finger_count(dev, num_fingers); 1002 1003 synaptics_report_buttons(psmouse, sgm); 1004 1005 input_sync(dev); 1006 } 1007 1008 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1009 struct synaptics_hw_state *sgm) 1010 { 1011 struct synaptics_data *priv = psmouse->private; 1012 int num_fingers; 1013 1014 /* 1015 * Update mt_state using the new finger count and current mt_state. 1016 */ 1017 if (sgm->z == 0) 1018 num_fingers = 0; 1019 else if (sgm->w >= 4) 1020 num_fingers = 1; 1021 else if (sgm->w == 0) 1022 num_fingers = 2; 1023 else if (sgm->w == 1) 1024 num_fingers = priv->agm_count ? priv->agm_count : 3; 1025 else 1026 num_fingers = 4; 1027 1028 /* Send resulting input events to user space */ 1029 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1030 } 1031 1032 static bool synaptics_has_multifinger(struct synaptics_data *priv) 1033 { 1034 if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) 1035 return true; 1036 1037 /* Advanced gesture mode also sends multi finger data */ 1038 return synaptics_has_agm(priv); 1039 } 1040 1041 /* 1042 * called for each full received packet from the touchpad 1043 */ 1044 static void synaptics_process_packet(struct psmouse *psmouse) 1045 { 1046 struct input_dev *dev = psmouse->dev; 1047 struct synaptics_data *priv = psmouse->private; 1048 struct synaptics_device_info *info = &priv->info; 1049 struct synaptics_hw_state hw; 1050 int num_fingers; 1051 int finger_width; 1052 1053 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1054 return; 1055 1056 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1057 synaptics_image_sensor_process(psmouse, &hw); 1058 return; 1059 } 1060 1061 if (hw.scroll) { 1062 priv->scroll += hw.scroll; 1063 1064 while (priv->scroll >= 4) { 1065 input_report_key(dev, BTN_BACK, !hw.down); 1066 input_sync(dev); 1067 input_report_key(dev, BTN_BACK, hw.down); 1068 input_sync(dev); 1069 priv->scroll -= 4; 1070 } 1071 while (priv->scroll <= -4) { 1072 input_report_key(dev, BTN_FORWARD, !hw.up); 1073 input_sync(dev); 1074 input_report_key(dev, BTN_FORWARD, hw.up); 1075 input_sync(dev); 1076 priv->scroll += 4; 1077 } 1078 return; 1079 } 1080 1081 if (hw.z > 0 && hw.x > 1) { 1082 num_fingers = 1; 1083 finger_width = 5; 1084 if (SYN_CAP_EXTENDED(info->capabilities)) { 1085 switch (hw.w) { 1086 case 0 ... 1: 1087 if (synaptics_has_multifinger(priv)) 1088 num_fingers = hw.w + 2; 1089 break; 1090 case 2: 1091 if (SYN_MODEL_PEN(info->model_id)) 1092 ; /* Nothing, treat a pen as a single finger */ 1093 break; 1094 case 4 ... 15: 1095 if (SYN_CAP_PALMDETECT(info->capabilities)) 1096 finger_width = hw.w; 1097 break; 1098 } 1099 } 1100 } else { 1101 num_fingers = 0; 1102 finger_width = 0; 1103 } 1104 1105 if (cr48_profile_sensor) { 1106 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1107 return; 1108 } 1109 1110 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1111 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1112 num_fingers); 1113 1114 /* Post events 1115 * BTN_TOUCH has to be first as mousedev relies on it when doing 1116 * absolute -> relative conversion 1117 */ 1118 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1119 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1120 1121 if (num_fingers > 0) { 1122 input_report_abs(dev, ABS_X, hw.x); 1123 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1124 } 1125 input_report_abs(dev, ABS_PRESSURE, hw.z); 1126 1127 if (SYN_CAP_PALMDETECT(info->capabilities)) 1128 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1129 1130 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1131 if (synaptics_has_multifinger(priv)) { 1132 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1133 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1134 } 1135 1136 synaptics_report_buttons(psmouse, &hw); 1137 1138 input_sync(dev); 1139 } 1140 1141 static bool synaptics_validate_byte(struct psmouse *psmouse, 1142 int idx, enum synaptics_pkt_type pkt_type) 1143 { 1144 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1145 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1146 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1147 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1148 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1149 const u8 *packet = psmouse->packet; 1150 1151 if (idx < 0 || idx > 4) 1152 return false; 1153 1154 switch (pkt_type) { 1155 1156 case SYN_NEWABS: 1157 case SYN_NEWABS_RELAXED: 1158 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1159 1160 case SYN_NEWABS_STRICT: 1161 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1162 1163 case SYN_OLDABS: 1164 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1165 1166 default: 1167 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1168 return false; 1169 } 1170 } 1171 1172 static enum synaptics_pkt_type 1173 synaptics_detect_pkt_type(struct psmouse *psmouse) 1174 { 1175 int i; 1176 1177 for (i = 0; i < 5; i++) { 1178 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1179 psmouse_info(psmouse, "using relaxed packet validation\n"); 1180 return SYN_NEWABS_RELAXED; 1181 } 1182 } 1183 1184 return SYN_NEWABS_STRICT; 1185 } 1186 1187 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1188 { 1189 struct synaptics_data *priv = psmouse->private; 1190 1191 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1192 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1193 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1194 1195 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1196 synaptics_is_pt_packet(psmouse->packet)) { 1197 if (priv->pt_port) 1198 synaptics_pass_pt_packet(priv->pt_port, 1199 psmouse->packet); 1200 } else 1201 synaptics_process_packet(psmouse); 1202 1203 return PSMOUSE_FULL_PACKET; 1204 } 1205 1206 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1207 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1208 } 1209 1210 /***************************************************************************** 1211 * Driver initialization/cleanup functions 1212 ****************************************************************************/ 1213 static void set_abs_position_params(struct input_dev *dev, 1214 struct synaptics_device_info *info, 1215 int x_code, int y_code) 1216 { 1217 int x_min = info->x_min ?: XMIN_NOMINAL; 1218 int x_max = info->x_max ?: XMAX_NOMINAL; 1219 int y_min = info->y_min ?: YMIN_NOMINAL; 1220 int y_max = info->y_max ?: YMAX_NOMINAL; 1221 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1222 SYN_REDUCED_FILTER_FUZZ : 0; 1223 1224 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1225 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1226 input_abs_set_res(dev, x_code, info->x_res); 1227 input_abs_set_res(dev, y_code, info->y_res); 1228 } 1229 1230 static int set_input_params(struct psmouse *psmouse, 1231 struct synaptics_data *priv) 1232 { 1233 struct input_dev *dev = psmouse->dev; 1234 struct synaptics_device_info *info = &priv->info; 1235 int i; 1236 int error; 1237 1238 /* Reset default psmouse capabilities */ 1239 __clear_bit(EV_REL, dev->evbit); 1240 bitmap_zero(dev->relbit, REL_CNT); 1241 bitmap_zero(dev->keybit, KEY_CNT); 1242 1243 /* Things that apply to both modes */ 1244 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1245 1246 input_set_capability(dev, EV_KEY, BTN_LEFT); 1247 1248 /* Clickpads report only left button */ 1249 if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1250 input_set_capability(dev, EV_KEY, BTN_RIGHT); 1251 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1252 input_set_capability(dev, EV_KEY, BTN_MIDDLE); 1253 } 1254 1255 if (!priv->absolute_mode) { 1256 /* Relative mode */ 1257 input_set_capability(dev, EV_REL, REL_X); 1258 input_set_capability(dev, EV_REL, REL_Y); 1259 return 0; 1260 } 1261 1262 /* Absolute mode */ 1263 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1264 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1265 1266 if (cr48_profile_sensor) 1267 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1268 1269 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1270 set_abs_position_params(dev, info, 1271 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1272 /* Image sensors can report per-contact pressure */ 1273 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1274 1275 error = input_mt_init_slots(dev, 2, 1276 INPUT_MT_POINTER | INPUT_MT_TRACK); 1277 if (error) 1278 return error; 1279 1280 /* Image sensors can signal 4 and 5 finger clicks */ 1281 input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); 1282 input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); 1283 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1284 set_abs_position_params(dev, info, 1285 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1286 /* 1287 * Profile sensor in CR-48 tracks contacts reasonably well, 1288 * other non-image sensors with AGM use semi-mt. 1289 */ 1290 error = input_mt_init_slots(dev, 2, 1291 INPUT_MT_POINTER | 1292 (cr48_profile_sensor ? 1293 INPUT_MT_TRACK : 1294 INPUT_MT_SEMI_MT)); 1295 if (error) 1296 return error; 1297 1298 /* 1299 * For semi-mt devices we send ABS_X/Y ourselves instead of 1300 * input_mt_report_pointer_emulation. But 1301 * input_mt_init_slots() resets the fuzz to 0, leading to a 1302 * filtered ABS_MT_POSITION_X but an unfiltered ABS_X 1303 * position. Let's re-initialize ABS_X/Y here. 1304 */ 1305 if (!cr48_profile_sensor) 1306 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1307 } 1308 1309 if (SYN_CAP_PALMDETECT(info->capabilities)) 1310 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1311 1312 input_set_capability(dev, EV_KEY, BTN_TOUCH); 1313 input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); 1314 1315 if (synaptics_has_multifinger(priv)) { 1316 input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); 1317 input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); 1318 } 1319 1320 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1321 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1322 input_set_capability(dev, EV_KEY, BTN_FORWARD); 1323 input_set_capability(dev, EV_KEY, BTN_BACK); 1324 } 1325 1326 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1327 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1328 input_set_capability(dev, EV_KEY, BTN_0 + i); 1329 1330 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1331 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1332 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1333 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1334 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1335 } 1336 1337 return 0; 1338 } 1339 1340 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1341 void *data, char *buf) 1342 { 1343 struct synaptics_data *priv = psmouse->private; 1344 1345 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1346 } 1347 1348 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1349 void *data, const char *buf, 1350 size_t len) 1351 { 1352 struct synaptics_data *priv = psmouse->private; 1353 unsigned int value; 1354 int err; 1355 1356 err = kstrtouint(buf, 10, &value); 1357 if (err) 1358 return err; 1359 1360 if (value > 1) 1361 return -EINVAL; 1362 1363 if (value == priv->disable_gesture) 1364 return len; 1365 1366 priv->disable_gesture = value; 1367 if (value) 1368 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1369 else 1370 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1371 1372 if (synaptics_mode_cmd(psmouse, priv->mode)) 1373 return -EIO; 1374 1375 return len; 1376 } 1377 1378 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1379 synaptics_show_disable_gesture, 1380 synaptics_set_disable_gesture); 1381 1382 static void synaptics_disconnect(struct psmouse *psmouse) 1383 { 1384 struct synaptics_data *priv = psmouse->private; 1385 1386 /* 1387 * We might have left a breadcrumb when trying to 1388 * set up SMbus companion. 1389 */ 1390 psmouse_smbus_cleanup(psmouse); 1391 1392 if (!priv->absolute_mode && 1393 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1394 device_remove_file(&psmouse->ps2dev.serio->dev, 1395 &psmouse_attr_disable_gesture.dattr); 1396 1397 synaptics_reset(psmouse); 1398 kfree(priv); 1399 psmouse->private = NULL; 1400 } 1401 1402 static int synaptics_reconnect(struct psmouse *psmouse) 1403 { 1404 struct synaptics_data *priv = psmouse->private; 1405 struct synaptics_device_info info; 1406 u8 param[2]; 1407 int retry = 0; 1408 int error; 1409 1410 do { 1411 psmouse_reset(psmouse); 1412 if (retry) { 1413 /* 1414 * On some boxes, right after resuming, the touchpad 1415 * needs some time to finish initializing (I assume 1416 * it needs time to calibrate) and start responding 1417 * to Synaptics-specific queries, so let's wait a 1418 * bit. 1419 */ 1420 ssleep(1); 1421 } 1422 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1423 error = synaptics_detect(psmouse, 0); 1424 } while (error && ++retry < 3); 1425 1426 if (error) 1427 return error; 1428 1429 if (retry > 1) 1430 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1431 1432 error = synaptics_query_hardware(psmouse, &info); 1433 if (error) { 1434 psmouse_err(psmouse, "Unable to query device.\n"); 1435 return error; 1436 } 1437 1438 error = synaptics_set_mode(psmouse); 1439 if (error) { 1440 psmouse_err(psmouse, "Unable to initialize device.\n"); 1441 return error; 1442 } 1443 1444 if (info.identity != priv->info.identity || 1445 info.model_id != priv->info.model_id || 1446 info.capabilities != priv->info.capabilities || 1447 info.ext_cap != priv->info.ext_cap) { 1448 psmouse_err(psmouse, 1449 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1450 priv->info.identity, info.identity, 1451 priv->info.model_id, info.model_id, 1452 priv->info.capabilities, info.capabilities, 1453 priv->info.ext_cap, info.ext_cap); 1454 return -ENXIO; 1455 } 1456 1457 return 0; 1458 } 1459 1460 static bool impaired_toshiba_kbc; 1461 1462 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1463 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1464 { 1465 /* Toshiba Satellite */ 1466 .matches = { 1467 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1468 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1469 }, 1470 }, 1471 { 1472 /* Toshiba Dynabook */ 1473 .matches = { 1474 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1475 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1476 }, 1477 }, 1478 { 1479 /* Toshiba Portege M300 */ 1480 .matches = { 1481 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1482 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1483 }, 1484 1485 }, 1486 { 1487 /* Toshiba Portege M300 */ 1488 .matches = { 1489 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1490 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1491 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1492 }, 1493 1494 }, 1495 #endif 1496 { } 1497 }; 1498 1499 static bool broken_olpc_ec; 1500 1501 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1502 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1503 { 1504 /* OLPC XO-1 or XO-1.5 */ 1505 .matches = { 1506 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1507 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1508 }, 1509 }, 1510 #endif 1511 { } 1512 }; 1513 1514 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1515 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1516 { 1517 /* Cr-48 Chromebook (Codename Mario) */ 1518 .matches = { 1519 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1520 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1521 }, 1522 }, 1523 #endif 1524 { } 1525 }; 1526 1527 void __init synaptics_module_init(void) 1528 { 1529 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1530 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1531 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1532 } 1533 1534 static int synaptics_init_ps2(struct psmouse *psmouse, 1535 struct synaptics_device_info *info, 1536 bool absolute_mode) 1537 { 1538 struct synaptics_data *priv; 1539 int err; 1540 1541 synaptics_apply_quirks(psmouse, info); 1542 1543 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1544 if (!priv) 1545 return -ENOMEM; 1546 1547 priv->info = *info; 1548 priv->absolute_mode = absolute_mode; 1549 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1550 priv->disable_gesture = true; 1551 1552 /* 1553 * Unfortunately ForcePad capability is not exported over PS/2, 1554 * so we have to resort to checking PNP IDs. 1555 */ 1556 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1557 1558 err = synaptics_set_mode(psmouse); 1559 if (err) { 1560 psmouse_err(psmouse, "Unable to initialize device.\n"); 1561 goto init_fail; 1562 } 1563 1564 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1565 SYN_NEWABS : SYN_OLDABS; 1566 1567 psmouse_info(psmouse, 1568 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1569 SYN_ID_MODEL(info->identity), 1570 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1571 info->model_id, 1572 info->capabilities, info->ext_cap, info->ext_cap_0c, 1573 info->ext_cap_10, info->board_id, info->firmware_id); 1574 1575 err = set_input_params(psmouse, priv); 1576 if (err) { 1577 psmouse_err(psmouse, 1578 "failed to set up capabilities: %d\n", err); 1579 goto init_fail; 1580 } 1581 1582 /* 1583 * Encode touchpad model so that it can be used to set 1584 * input device->id.version and be visible to userspace. 1585 * Because version is __u16 we have to drop something. 1586 * Hardware info bits seem to be good candidates as they 1587 * are documented to be for Synaptics corp. internal use. 1588 */ 1589 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1590 (info->model_id & 0x000000ff); 1591 1592 if (absolute_mode) { 1593 psmouse->protocol_handler = synaptics_process_byte; 1594 psmouse->pktsize = 6; 1595 } else { 1596 /* Relative mode follows standard PS/2 mouse protocol */ 1597 psmouse->protocol_handler = psmouse_process_byte; 1598 psmouse->pktsize = 3; 1599 } 1600 1601 psmouse->set_rate = synaptics_set_rate; 1602 psmouse->disconnect = synaptics_disconnect; 1603 psmouse->reconnect = synaptics_reconnect; 1604 psmouse->cleanup = synaptics_reset; 1605 /* Synaptics can usually stay in sync without extra help */ 1606 psmouse->resync_time = 0; 1607 1608 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1609 synaptics_pt_create(psmouse); 1610 1611 /* 1612 * Toshiba's KBC seems to have trouble handling data from 1613 * Synaptics at full rate. Switch to a lower rate (roughly 1614 * the same rate as a standard PS/2 mouse). 1615 */ 1616 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1617 psmouse_info(psmouse, 1618 "Toshiba %s detected, limiting rate to 40pps.\n", 1619 dmi_get_system_info(DMI_PRODUCT_NAME)); 1620 psmouse->rate = 40; 1621 } 1622 1623 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1624 err = device_create_file(&psmouse->ps2dev.serio->dev, 1625 &psmouse_attr_disable_gesture.dattr); 1626 if (err) { 1627 psmouse_err(psmouse, 1628 "Failed to create disable_gesture attribute (%d)", 1629 err); 1630 goto init_fail; 1631 } 1632 } 1633 1634 return 0; 1635 1636 init_fail: 1637 kfree(priv); 1638 return err; 1639 } 1640 1641 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1642 { 1643 struct synaptics_device_info info; 1644 int error; 1645 1646 psmouse_reset(psmouse); 1647 1648 error = synaptics_query_hardware(psmouse, &info); 1649 if (error) { 1650 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1651 return error; 1652 } 1653 1654 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1655 } 1656 1657 int synaptics_init_absolute(struct psmouse *psmouse) 1658 { 1659 return __synaptics_init(psmouse, true); 1660 } 1661 1662 int synaptics_init_relative(struct psmouse *psmouse) 1663 { 1664 return __synaptics_init(psmouse, false); 1665 } 1666 1667 static int synaptics_setup_ps2(struct psmouse *psmouse, 1668 struct synaptics_device_info *info) 1669 { 1670 bool absolute_mode = true; 1671 int error; 1672 1673 /* 1674 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1675 * packet spew overloads the EC such that key presses on the keyboard 1676 * are missed. Given that, don't even attempt to use Absolute mode. 1677 * Relative mode seems to work just fine. 1678 */ 1679 if (broken_olpc_ec) { 1680 psmouse_info(psmouse, 1681 "OLPC XO detected, forcing relative protocol.\n"); 1682 absolute_mode = false; 1683 } 1684 1685 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1686 if (error) 1687 return error; 1688 1689 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1690 } 1691 1692 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1693 1694 void __init synaptics_module_init(void) 1695 { 1696 } 1697 1698 static int __maybe_unused 1699 synaptics_setup_ps2(struct psmouse *psmouse, 1700 struct synaptics_device_info *info) 1701 { 1702 return -ENOSYS; 1703 } 1704 1705 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1706 1707 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1708 1709 /* 1710 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1711 * provides a better bandwidth and allow a better control of the touchpads. 1712 * This is used to decide if we need to use this bus or not. 1713 */ 1714 enum { 1715 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1716 SYNAPTICS_INTERTOUCH_OFF, 1717 SYNAPTICS_INTERTOUCH_ON, 1718 }; 1719 1720 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1721 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1722 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1723 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1724 1725 static int synaptics_create_intertouch(struct psmouse *psmouse, 1726 struct synaptics_device_info *info, 1727 bool leave_breadcrumbs) 1728 { 1729 bool topbuttonpad = 1730 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1731 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1732 const struct rmi_device_platform_data pdata = { 1733 .sensor_pdata = { 1734 .sensor_type = rmi_sensor_touchpad, 1735 .axis_align.flip_y = true, 1736 .kernel_tracking = false, 1737 .topbuttonpad = topbuttonpad, 1738 }, 1739 .f30_data = { 1740 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1741 .trackstick_buttons = 1742 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1743 }, 1744 }; 1745 const struct i2c_board_info intertouch_board = { 1746 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1747 .flags = I2C_CLIENT_HOST_NOTIFY, 1748 }; 1749 1750 return psmouse_smbus_init(psmouse, &intertouch_board, 1751 &pdata, sizeof(pdata), 1752 leave_breadcrumbs); 1753 } 1754 1755 /** 1756 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1757 * and decides to instantiate a SMBus InterTouch device. 1758 */ 1759 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1760 struct synaptics_device_info *info, 1761 bool leave_breadcrumbs) 1762 { 1763 int error; 1764 1765 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1766 return -ENXIO; 1767 1768 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1769 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1770 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1771 1772 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1773 psmouse_info(psmouse, 1774 "Your touchpad (%s) says it can support a different bus. " 1775 "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n", 1776 psmouse->ps2dev.serio->firmware_id); 1777 1778 return -ENXIO; 1779 } 1780 } 1781 1782 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1783 1784 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1785 if (error) { 1786 if (error == -EAGAIN) 1787 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1788 else 1789 psmouse_err(psmouse, "unable to create intertouch device\n"); 1790 1791 return error; 1792 } 1793 1794 return 0; 1795 } 1796 1797 int synaptics_init_smbus(struct psmouse *psmouse) 1798 { 1799 struct synaptics_device_info info; 1800 int error; 1801 1802 psmouse_reset(psmouse); 1803 1804 error = synaptics_query_hardware(psmouse, &info); 1805 if (error) { 1806 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1807 return error; 1808 } 1809 1810 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1811 return -ENXIO; 1812 1813 return synaptics_create_intertouch(psmouse, &info, false); 1814 } 1815 1816 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1817 1818 static int __maybe_unused 1819 synaptics_setup_intertouch(struct psmouse *psmouse, 1820 struct synaptics_device_info *info, 1821 bool leave_breadcrumbs) 1822 { 1823 return -ENOSYS; 1824 } 1825 1826 int synaptics_init_smbus(struct psmouse *psmouse) 1827 { 1828 return -ENOSYS; 1829 } 1830 1831 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1832 1833 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1834 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1835 1836 int synaptics_init(struct psmouse *psmouse) 1837 { 1838 struct synaptics_device_info info; 1839 int error; 1840 int retval; 1841 1842 psmouse_reset(psmouse); 1843 1844 error = synaptics_query_hardware(psmouse, &info); 1845 if (error) { 1846 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1847 return error; 1848 } 1849 1850 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1851 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1852 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1853 /* Forcepads need F21, which is not ready */ 1854 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1855 psmouse_warn(psmouse, 1856 "The touchpad can support a better bus than the too old PS/2 protocol. " 1857 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1858 } 1859 1860 error = synaptics_setup_intertouch(psmouse, &info, true); 1861 if (!error) 1862 return PSMOUSE_SYNAPTICS_SMBUS; 1863 } 1864 1865 retval = synaptics_setup_ps2(psmouse, &info); 1866 if (retval < 0) { 1867 /* 1868 * Not using any flavor of Synaptics support, so clean up 1869 * SMbus breadcrumbs, if any. 1870 */ 1871 psmouse_smbus_cleanup(psmouse); 1872 } 1873 1874 return retval; 1875 } 1876 1877 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1878 1879 int synaptics_init(struct psmouse *psmouse) 1880 { 1881 return -ENOSYS; 1882 } 1883 1884 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1885