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 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 = psmouse_sliced_command(psmouse, 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 int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 539 { 540 static u8 param = 0xc8; 541 struct synaptics_data *priv = psmouse->private; 542 int error; 543 544 if (!(SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 545 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c))) 546 return 0; 547 548 error = psmouse_sliced_command(psmouse, SYN_QUE_MODEL); 549 if (error) 550 return error; 551 552 error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); 553 if (error) 554 return error; 555 556 /* Advanced gesture mode also sends multi finger data */ 557 priv->info.capabilities |= BIT(1); 558 559 return 0; 560 } 561 562 static int synaptics_set_mode(struct psmouse *psmouse) 563 { 564 struct synaptics_data *priv = psmouse->private; 565 int error; 566 567 priv->mode = 0; 568 if (priv->absolute_mode) 569 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 570 if (priv->disable_gesture) 571 priv->mode |= SYN_BIT_DISABLE_GESTURE; 572 if (psmouse->rate >= 80) 573 priv->mode |= SYN_BIT_HIGH_RATE; 574 if (SYN_CAP_EXTENDED(priv->info.capabilities)) 575 priv->mode |= SYN_BIT_W_MODE; 576 577 error = synaptics_mode_cmd(psmouse, priv->mode); 578 if (error) 579 return error; 580 581 if (priv->absolute_mode) { 582 error = synaptics_set_advanced_gesture_mode(psmouse); 583 if (error) { 584 psmouse_err(psmouse, 585 "Advanced gesture mode init failed: %d\n", 586 error); 587 return error; 588 } 589 } 590 591 return 0; 592 } 593 594 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 595 { 596 struct synaptics_data *priv = psmouse->private; 597 598 if (rate >= 80) { 599 priv->mode |= SYN_BIT_HIGH_RATE; 600 psmouse->rate = 80; 601 } else { 602 priv->mode &= ~SYN_BIT_HIGH_RATE; 603 psmouse->rate = 40; 604 } 605 606 synaptics_mode_cmd(psmouse, priv->mode); 607 } 608 609 /***************************************************************************** 610 * Synaptics pass-through PS/2 port support 611 ****************************************************************************/ 612 static int synaptics_pt_write(struct serio *serio, u8 c) 613 { 614 struct psmouse *parent = serio_get_drvdata(serio->parent); 615 u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 616 int error; 617 618 error = psmouse_sliced_command(parent, c); 619 if (error) 620 return error; 621 622 error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); 623 if (error) 624 return error; 625 626 return 0; 627 } 628 629 static int synaptics_pt_start(struct serio *serio) 630 { 631 struct psmouse *parent = serio_get_drvdata(serio->parent); 632 struct synaptics_data *priv = parent->private; 633 634 serio_pause_rx(parent->ps2dev.serio); 635 priv->pt_port = serio; 636 serio_continue_rx(parent->ps2dev.serio); 637 638 return 0; 639 } 640 641 static void synaptics_pt_stop(struct serio *serio) 642 { 643 struct psmouse *parent = serio_get_drvdata(serio->parent); 644 struct synaptics_data *priv = parent->private; 645 646 serio_pause_rx(parent->ps2dev.serio); 647 priv->pt_port = NULL; 648 serio_continue_rx(parent->ps2dev.serio); 649 } 650 651 static int synaptics_is_pt_packet(u8 *buf) 652 { 653 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 654 } 655 656 static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet) 657 { 658 struct psmouse *child = serio_get_drvdata(ptport); 659 660 if (child && child->state == PSMOUSE_ACTIVATED) { 661 serio_interrupt(ptport, packet[1], 0); 662 serio_interrupt(ptport, packet[4], 0); 663 serio_interrupt(ptport, packet[5], 0); 664 if (child->pktsize == 4) 665 serio_interrupt(ptport, packet[2], 0); 666 } else { 667 serio_interrupt(ptport, packet[1], 0); 668 } 669 } 670 671 static void synaptics_pt_activate(struct psmouse *psmouse) 672 { 673 struct synaptics_data *priv = psmouse->private; 674 struct psmouse *child = serio_get_drvdata(priv->pt_port); 675 676 /* adjust the touchpad to child's choice of protocol */ 677 if (child) { 678 if (child->pktsize == 4) 679 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 680 else 681 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 682 683 if (synaptics_mode_cmd(psmouse, priv->mode)) 684 psmouse_warn(psmouse, 685 "failed to switch guest protocol\n"); 686 } 687 } 688 689 static void synaptics_pt_create(struct psmouse *psmouse) 690 { 691 struct serio *serio; 692 693 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 694 if (!serio) { 695 psmouse_err(psmouse, 696 "not enough memory for pass-through port\n"); 697 return; 698 } 699 700 serio->id.type = SERIO_PS_PSTHRU; 701 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 702 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 703 serio->write = synaptics_pt_write; 704 serio->start = synaptics_pt_start; 705 serio->stop = synaptics_pt_stop; 706 serio->parent = psmouse->ps2dev.serio; 707 708 psmouse->pt_activate = synaptics_pt_activate; 709 710 psmouse_info(psmouse, "serio: %s port at %s\n", 711 serio->name, psmouse->phys); 712 serio_register_port(serio); 713 } 714 715 /***************************************************************************** 716 * Functions to interpret the absolute mode packets 717 ****************************************************************************/ 718 719 static void synaptics_parse_agm(const u8 buf[], 720 struct synaptics_data *priv, 721 struct synaptics_hw_state *hw) 722 { 723 struct synaptics_hw_state *agm = &priv->agm; 724 int agm_packet_type; 725 726 agm_packet_type = (buf[5] & 0x30) >> 4; 727 switch (agm_packet_type) { 728 case 1: 729 /* Gesture packet: (x, y, z) half resolution */ 730 agm->w = hw->w; 731 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 732 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 733 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 734 break; 735 736 case 2: 737 /* AGM-CONTACT packet: we are only interested in the count */ 738 priv->agm_count = buf[1]; 739 break; 740 741 default: 742 break; 743 } 744 } 745 746 static void synaptics_parse_ext_buttons(const u8 buf[], 747 struct synaptics_data *priv, 748 struct synaptics_hw_state *hw) 749 { 750 unsigned int ext_bits = 751 (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 752 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 753 754 hw->ext_buttons = buf[4] & ext_mask; 755 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 756 } 757 758 static int synaptics_parse_hw_state(const u8 buf[], 759 struct synaptics_data *priv, 760 struct synaptics_hw_state *hw) 761 { 762 memset(hw, 0, sizeof(struct synaptics_hw_state)); 763 764 if (SYN_MODEL_NEWABS(priv->info.model_id)) { 765 hw->w = (((buf[0] & 0x30) >> 2) | 766 ((buf[0] & 0x04) >> 1) | 767 ((buf[3] & 0x04) >> 2)); 768 769 if ((SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || 770 SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)) && 771 hw->w == 2) { 772 synaptics_parse_agm(buf, priv, hw); 773 return 1; 774 } 775 776 hw->x = (((buf[3] & 0x10) << 8) | 777 ((buf[1] & 0x0f) << 8) | 778 buf[4]); 779 hw->y = (((buf[3] & 0x20) << 7) | 780 ((buf[1] & 0xf0) << 4) | 781 buf[5]); 782 hw->z = buf[2]; 783 784 hw->left = (buf[0] & 0x01) ? 1 : 0; 785 hw->right = (buf[0] & 0x02) ? 1 : 0; 786 787 if (priv->is_forcepad) { 788 /* 789 * ForcePads, like Clickpads, use middle button 790 * bits to report primary button clicks. 791 * Unfortunately they report primary button not 792 * only when user presses on the pad above certain 793 * threshold, but also when there are more than one 794 * finger on the touchpad, which interferes with 795 * out multi-finger gestures. 796 */ 797 if (hw->z == 0) { 798 /* No contacts */ 799 priv->press = priv->report_press = false; 800 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 801 /* 802 * Single-finger touch with pressure above 803 * the threshold. If pressure stays long 804 * enough, we'll start reporting primary 805 * button. We rely on the device continuing 806 * sending data even if finger does not 807 * move. 808 */ 809 if (!priv->press) { 810 priv->press_start = jiffies; 811 priv->press = true; 812 } else if (time_after(jiffies, 813 priv->press_start + 814 msecs_to_jiffies(50))) { 815 priv->report_press = true; 816 } 817 } else { 818 priv->press = false; 819 } 820 821 hw->left = priv->report_press; 822 823 } else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { 824 /* 825 * Clickpad's button is transmitted as middle button, 826 * however, since it is primary button, we will report 827 * it as BTN_LEFT. 828 */ 829 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 830 831 } else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { 832 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 833 if (hw->w == 2) 834 hw->scroll = (s8)buf[1]; 835 } 836 837 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 838 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 839 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 840 } 841 842 if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && 843 ((buf[0] ^ buf[3]) & 0x02)) { 844 synaptics_parse_ext_buttons(buf, priv, hw); 845 } 846 } else { 847 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 848 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 849 850 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 851 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 852 853 hw->left = (buf[0] & 0x01) ? 1 : 0; 854 hw->right = (buf[0] & 0x02) ? 1 : 0; 855 } 856 857 /* 858 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 859 * is used by some firmware to indicate a finger at the edge of 860 * the touchpad whose precise position cannot be determined, so 861 * convert these values to the maximum axis value. 862 */ 863 if (hw->x > X_MAX_POSITIVE) 864 hw->x -= 1 << ABS_POS_BITS; 865 else if (hw->x == X_MAX_POSITIVE) 866 hw->x = XMAX; 867 868 if (hw->y > Y_MAX_POSITIVE) 869 hw->y -= 1 << ABS_POS_BITS; 870 else if (hw->y == Y_MAX_POSITIVE) 871 hw->y = YMAX; 872 873 return 0; 874 } 875 876 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 877 bool active, int x, int y) 878 { 879 input_mt_slot(dev, slot); 880 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 881 if (active) { 882 input_report_abs(dev, ABS_MT_POSITION_X, x); 883 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 884 } 885 } 886 887 static void synaptics_report_semi_mt_data(struct input_dev *dev, 888 const struct synaptics_hw_state *a, 889 const struct synaptics_hw_state *b, 890 int num_fingers) 891 { 892 if (num_fingers >= 2) { 893 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 894 min(a->y, b->y)); 895 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 896 max(a->y, b->y)); 897 } else if (num_fingers == 1) { 898 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 899 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 900 } else { 901 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 902 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 903 } 904 } 905 906 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 907 const struct synaptics_hw_state *hw) 908 { 909 struct input_dev *dev = psmouse->dev; 910 struct synaptics_data *priv = psmouse->private; 911 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; 912 int i; 913 914 if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) 915 return; 916 917 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 918 if ((SYN_ID_FULL(priv->info.identity) == 0x801 || 919 SYN_ID_FULL(priv->info.identity) == 0x802) && 920 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 921 return; 922 923 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { 924 for (i = 0; i < ext_bits; i++) { 925 input_report_key(dev, BTN_0 + 2 * i, 926 hw->ext_buttons & BIT(i)); 927 input_report_key(dev, BTN_1 + 2 * i, 928 hw->ext_buttons & BIT(i + ext_bits)); 929 } 930 return; 931 } 932 933 /* 934 * This generation of touchpads has the trackstick buttons 935 * physically wired to the touchpad. Re-route them through 936 * the pass-through interface. 937 */ 938 if (priv->pt_port) { 939 u8 pt_buttons; 940 941 /* The trackstick expects at most 3 buttons */ 942 pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | 943 SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 944 SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 945 946 serio_interrupt(priv->pt_port, 947 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 948 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 949 } 950 } 951 952 static void synaptics_report_buttons(struct psmouse *psmouse, 953 const struct synaptics_hw_state *hw) 954 { 955 struct input_dev *dev = psmouse->dev; 956 struct synaptics_data *priv = psmouse->private; 957 958 input_report_key(dev, BTN_LEFT, hw->left); 959 input_report_key(dev, BTN_RIGHT, hw->right); 960 961 if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) 962 input_report_key(dev, BTN_MIDDLE, hw->middle); 963 964 if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { 965 input_report_key(dev, BTN_FORWARD, hw->up); 966 input_report_key(dev, BTN_BACK, hw->down); 967 } 968 969 synaptics_report_ext_buttons(psmouse, hw); 970 } 971 972 static void synaptics_report_mt_data(struct psmouse *psmouse, 973 const struct synaptics_hw_state *sgm, 974 int num_fingers) 975 { 976 struct input_dev *dev = psmouse->dev; 977 struct synaptics_data *priv = psmouse->private; 978 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 979 struct input_mt_pos pos[2]; 980 int slot[2], nsemi, i; 981 982 nsemi = clamp_val(num_fingers, 0, 2); 983 984 for (i = 0; i < nsemi; i++) { 985 pos[i].x = hw[i]->x; 986 pos[i].y = synaptics_invert_y(hw[i]->y); 987 } 988 989 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); 990 991 for (i = 0; i < nsemi; i++) { 992 input_mt_slot(dev, slot[i]); 993 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 994 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 995 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 996 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 997 } 998 999 input_mt_drop_unused(dev); 1000 1001 /* Don't use active slot count to generate BTN_TOOL events. */ 1002 input_mt_report_pointer_emulation(dev, false); 1003 1004 /* Send the number of fingers reported by touchpad itself. */ 1005 input_mt_report_finger_count(dev, num_fingers); 1006 1007 synaptics_report_buttons(psmouse, sgm); 1008 1009 input_sync(dev); 1010 } 1011 1012 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1013 struct synaptics_hw_state *sgm) 1014 { 1015 struct synaptics_data *priv = psmouse->private; 1016 int num_fingers; 1017 1018 /* 1019 * Update mt_state using the new finger count and current mt_state. 1020 */ 1021 if (sgm->z == 0) 1022 num_fingers = 0; 1023 else if (sgm->w >= 4) 1024 num_fingers = 1; 1025 else if (sgm->w == 0) 1026 num_fingers = 2; 1027 else if (sgm->w == 1) 1028 num_fingers = priv->agm_count ? priv->agm_count : 3; 1029 else 1030 num_fingers = 4; 1031 1032 /* Send resulting input events to user space */ 1033 synaptics_report_mt_data(psmouse, sgm, num_fingers); 1034 } 1035 1036 /* 1037 * called for each full received packet from the touchpad 1038 */ 1039 static void synaptics_process_packet(struct psmouse *psmouse) 1040 { 1041 struct input_dev *dev = psmouse->dev; 1042 struct synaptics_data *priv = psmouse->private; 1043 struct synaptics_device_info *info = &priv->info; 1044 struct synaptics_hw_state hw; 1045 int num_fingers; 1046 int finger_width; 1047 1048 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1049 return; 1050 1051 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1052 synaptics_image_sensor_process(psmouse, &hw); 1053 return; 1054 } 1055 1056 if (hw.scroll) { 1057 priv->scroll += hw.scroll; 1058 1059 while (priv->scroll >= 4) { 1060 input_report_key(dev, BTN_BACK, !hw.down); 1061 input_sync(dev); 1062 input_report_key(dev, BTN_BACK, hw.down); 1063 input_sync(dev); 1064 priv->scroll -= 4; 1065 } 1066 while (priv->scroll <= -4) { 1067 input_report_key(dev, BTN_FORWARD, !hw.up); 1068 input_sync(dev); 1069 input_report_key(dev, BTN_FORWARD, hw.up); 1070 input_sync(dev); 1071 priv->scroll += 4; 1072 } 1073 return; 1074 } 1075 1076 if (hw.z > 0 && hw.x > 1) { 1077 num_fingers = 1; 1078 finger_width = 5; 1079 if (SYN_CAP_EXTENDED(info->capabilities)) { 1080 switch (hw.w) { 1081 case 0 ... 1: 1082 if (SYN_CAP_MULTIFINGER(info->capabilities)) 1083 num_fingers = hw.w + 2; 1084 break; 1085 case 2: 1086 if (SYN_MODEL_PEN(info->model_id)) 1087 ; /* Nothing, treat a pen as a single finger */ 1088 break; 1089 case 4 ... 15: 1090 if (SYN_CAP_PALMDETECT(info->capabilities)) 1091 finger_width = hw.w; 1092 break; 1093 } 1094 } 1095 } else { 1096 num_fingers = 0; 1097 finger_width = 0; 1098 } 1099 1100 if (cr48_profile_sensor) { 1101 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1102 return; 1103 } 1104 1105 if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) 1106 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1107 num_fingers); 1108 1109 /* Post events 1110 * BTN_TOUCH has to be first as mousedev relies on it when doing 1111 * absolute -> relative conversion 1112 */ 1113 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1114 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1115 1116 if (num_fingers > 0) { 1117 input_report_abs(dev, ABS_X, hw.x); 1118 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1119 } 1120 input_report_abs(dev, ABS_PRESSURE, hw.z); 1121 1122 if (SYN_CAP_PALMDETECT(info->capabilities)) 1123 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1124 1125 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1126 if (SYN_CAP_MULTIFINGER(info->capabilities)) { 1127 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1128 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1129 } 1130 1131 synaptics_report_buttons(psmouse, &hw); 1132 1133 input_sync(dev); 1134 } 1135 1136 static bool synaptics_validate_byte(struct psmouse *psmouse, 1137 int idx, enum synaptics_pkt_type pkt_type) 1138 { 1139 static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1140 static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1141 static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1142 static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1143 static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1144 const u8 *packet = psmouse->packet; 1145 1146 if (idx < 0 || idx > 4) 1147 return false; 1148 1149 switch (pkt_type) { 1150 1151 case SYN_NEWABS: 1152 case SYN_NEWABS_RELAXED: 1153 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1154 1155 case SYN_NEWABS_STRICT: 1156 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1157 1158 case SYN_OLDABS: 1159 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1160 1161 default: 1162 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1163 return false; 1164 } 1165 } 1166 1167 static enum synaptics_pkt_type 1168 synaptics_detect_pkt_type(struct psmouse *psmouse) 1169 { 1170 int i; 1171 1172 for (i = 0; i < 5; i++) { 1173 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1174 psmouse_info(psmouse, "using relaxed packet validation\n"); 1175 return SYN_NEWABS_RELAXED; 1176 } 1177 } 1178 1179 return SYN_NEWABS_STRICT; 1180 } 1181 1182 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1183 { 1184 struct synaptics_data *priv = psmouse->private; 1185 1186 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1187 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1188 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1189 1190 if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && 1191 synaptics_is_pt_packet(psmouse->packet)) { 1192 if (priv->pt_port) 1193 synaptics_pass_pt_packet(priv->pt_port, 1194 psmouse->packet); 1195 } else 1196 synaptics_process_packet(psmouse); 1197 1198 return PSMOUSE_FULL_PACKET; 1199 } 1200 1201 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1202 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1203 } 1204 1205 /***************************************************************************** 1206 * Driver initialization/cleanup functions 1207 ****************************************************************************/ 1208 static void set_abs_position_params(struct input_dev *dev, 1209 struct synaptics_device_info *info, 1210 int x_code, int y_code) 1211 { 1212 int x_min = info->x_min ?: XMIN_NOMINAL; 1213 int x_max = info->x_max ?: XMAX_NOMINAL; 1214 int y_min = info->y_min ?: YMIN_NOMINAL; 1215 int y_max = info->y_max ?: YMAX_NOMINAL; 1216 int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? 1217 SYN_REDUCED_FILTER_FUZZ : 0; 1218 1219 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1220 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1221 input_abs_set_res(dev, x_code, info->x_res); 1222 input_abs_set_res(dev, y_code, info->y_res); 1223 } 1224 1225 static void set_input_params(struct psmouse *psmouse, 1226 struct synaptics_data *priv) 1227 { 1228 struct input_dev *dev = psmouse->dev; 1229 struct synaptics_device_info *info = &priv->info; 1230 int i; 1231 1232 /* Things that apply to both modes */ 1233 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1234 __set_bit(EV_KEY, dev->evbit); 1235 __set_bit(BTN_LEFT, dev->keybit); 1236 __set_bit(BTN_RIGHT, dev->keybit); 1237 1238 if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) 1239 __set_bit(BTN_MIDDLE, dev->keybit); 1240 1241 if (!priv->absolute_mode) { 1242 /* Relative mode */ 1243 __set_bit(EV_REL, dev->evbit); 1244 __set_bit(REL_X, dev->relbit); 1245 __set_bit(REL_Y, dev->relbit); 1246 return; 1247 } 1248 1249 /* Absolute mode */ 1250 __set_bit(EV_ABS, dev->evbit); 1251 set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); 1252 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1253 1254 if (cr48_profile_sensor) 1255 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1256 1257 if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { 1258 set_abs_position_params(dev, info, 1259 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1260 /* Image sensors can report per-contact pressure */ 1261 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1262 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1263 1264 /* Image sensors can signal 4 and 5 finger clicks */ 1265 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1266 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1267 } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { 1268 set_abs_position_params(dev, info, 1269 ABS_MT_POSITION_X, ABS_MT_POSITION_Y); 1270 /* 1271 * Profile sensor in CR-48 tracks contacts reasonably well, 1272 * other non-image sensors with AGM use semi-mt. 1273 */ 1274 input_mt_init_slots(dev, 2, 1275 INPUT_MT_POINTER | 1276 (cr48_profile_sensor ? 1277 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1278 } 1279 1280 if (SYN_CAP_PALMDETECT(info->capabilities)) 1281 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1282 1283 __set_bit(BTN_TOUCH, dev->keybit); 1284 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1285 1286 if (SYN_CAP_MULTIFINGER(info->capabilities)) { 1287 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1288 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1289 } 1290 1291 if (SYN_CAP_FOUR_BUTTON(info->capabilities) || 1292 SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { 1293 __set_bit(BTN_FORWARD, dev->keybit); 1294 __set_bit(BTN_BACK, dev->keybit); 1295 } 1296 1297 if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1298 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) 1299 __set_bit(BTN_0 + i, dev->keybit); 1300 1301 __clear_bit(EV_REL, dev->evbit); 1302 __clear_bit(REL_X, dev->relbit); 1303 __clear_bit(REL_Y, dev->relbit); 1304 1305 if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { 1306 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1307 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1308 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) 1309 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1310 /* Clickpads report only left button */ 1311 __clear_bit(BTN_RIGHT, dev->keybit); 1312 __clear_bit(BTN_MIDDLE, dev->keybit); 1313 } 1314 } 1315 1316 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1317 void *data, char *buf) 1318 { 1319 struct synaptics_data *priv = psmouse->private; 1320 1321 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1322 } 1323 1324 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1325 void *data, const char *buf, 1326 size_t len) 1327 { 1328 struct synaptics_data *priv = psmouse->private; 1329 unsigned int value; 1330 int err; 1331 1332 err = kstrtouint(buf, 10, &value); 1333 if (err) 1334 return err; 1335 1336 if (value > 1) 1337 return -EINVAL; 1338 1339 if (value == priv->disable_gesture) 1340 return len; 1341 1342 priv->disable_gesture = value; 1343 if (value) 1344 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1345 else 1346 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1347 1348 if (synaptics_mode_cmd(psmouse, priv->mode)) 1349 return -EIO; 1350 1351 return len; 1352 } 1353 1354 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1355 synaptics_show_disable_gesture, 1356 synaptics_set_disable_gesture); 1357 1358 static void synaptics_disconnect(struct psmouse *psmouse) 1359 { 1360 struct synaptics_data *priv = psmouse->private; 1361 1362 /* 1363 * We might have left a breadcrumb when trying to 1364 * set up SMbus companion. 1365 */ 1366 psmouse_smbus_cleanup(psmouse); 1367 1368 if (!priv->absolute_mode && 1369 SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) 1370 device_remove_file(&psmouse->ps2dev.serio->dev, 1371 &psmouse_attr_disable_gesture.dattr); 1372 1373 synaptics_reset(psmouse); 1374 kfree(priv); 1375 psmouse->private = NULL; 1376 } 1377 1378 static int synaptics_reconnect(struct psmouse *psmouse) 1379 { 1380 struct synaptics_data *priv = psmouse->private; 1381 struct synaptics_device_info info; 1382 u8 param[2]; 1383 int retry = 0; 1384 int error; 1385 1386 do { 1387 psmouse_reset(psmouse); 1388 if (retry) { 1389 /* 1390 * On some boxes, right after resuming, the touchpad 1391 * needs some time to finish initializing (I assume 1392 * it needs time to calibrate) and start responding 1393 * to Synaptics-specific queries, so let's wait a 1394 * bit. 1395 */ 1396 ssleep(1); 1397 } 1398 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1399 error = synaptics_detect(psmouse, 0); 1400 } while (error && ++retry < 3); 1401 1402 if (error) 1403 return error; 1404 1405 if (retry > 1) 1406 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1407 1408 error = synaptics_query_hardware(psmouse, &info); 1409 if (error) { 1410 psmouse_err(psmouse, "Unable to query device.\n"); 1411 return error; 1412 } 1413 1414 error = synaptics_set_mode(psmouse); 1415 if (error) { 1416 psmouse_err(psmouse, "Unable to initialize device.\n"); 1417 return error; 1418 } 1419 1420 if (info.identity != priv->info.identity || 1421 info.model_id != priv->info.model_id || 1422 info.capabilities != priv->info.capabilities || 1423 info.ext_cap != priv->info.ext_cap) { 1424 psmouse_err(psmouse, 1425 "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", 1426 priv->info.identity, info.identity, 1427 priv->info.model_id, info.model_id, 1428 priv->info.capabilities, info.capabilities, 1429 priv->info.ext_cap, info.ext_cap); 1430 return -ENXIO; 1431 } 1432 1433 return 0; 1434 } 1435 1436 static bool impaired_toshiba_kbc; 1437 1438 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1439 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1440 { 1441 /* Toshiba Satellite */ 1442 .matches = { 1443 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1444 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1445 }, 1446 }, 1447 { 1448 /* Toshiba Dynabook */ 1449 .matches = { 1450 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1451 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1452 }, 1453 }, 1454 { 1455 /* Toshiba Portege M300 */ 1456 .matches = { 1457 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1458 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1459 }, 1460 1461 }, 1462 { 1463 /* Toshiba Portege M300 */ 1464 .matches = { 1465 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1466 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1467 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1468 }, 1469 1470 }, 1471 #endif 1472 { } 1473 }; 1474 1475 static bool broken_olpc_ec; 1476 1477 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1478 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1479 { 1480 /* OLPC XO-1 or XO-1.5 */ 1481 .matches = { 1482 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1483 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1484 }, 1485 }, 1486 #endif 1487 { } 1488 }; 1489 1490 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1491 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1492 { 1493 /* Cr-48 Chromebook (Codename Mario) */ 1494 .matches = { 1495 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1496 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1497 }, 1498 }, 1499 #endif 1500 { } 1501 }; 1502 1503 void __init synaptics_module_init(void) 1504 { 1505 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1506 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1507 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1508 } 1509 1510 static int synaptics_init_ps2(struct psmouse *psmouse, 1511 struct synaptics_device_info *info, 1512 bool absolute_mode) 1513 { 1514 struct synaptics_data *priv; 1515 int err; 1516 1517 synaptics_apply_quirks(psmouse, info); 1518 1519 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1520 if (!priv) 1521 return -ENOMEM; 1522 1523 priv->info = *info; 1524 priv->absolute_mode = absolute_mode; 1525 if (SYN_ID_DISGEST_SUPPORTED(info->identity)) 1526 priv->disable_gesture = true; 1527 1528 /* 1529 * Unfortunately ForcePad capability is not exported over PS/2, 1530 * so we have to resort to checking PNP IDs. 1531 */ 1532 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1533 1534 err = synaptics_set_mode(psmouse); 1535 if (err) { 1536 psmouse_err(psmouse, "Unable to initialize device.\n"); 1537 goto init_fail; 1538 } 1539 1540 priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? 1541 SYN_NEWABS : SYN_OLDABS; 1542 1543 psmouse_info(psmouse, 1544 "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", 1545 SYN_ID_MODEL(info->identity), 1546 SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), 1547 info->model_id, 1548 info->capabilities, info->ext_cap, info->ext_cap_0c, 1549 info->ext_cap_10, info->board_id, info->firmware_id); 1550 1551 set_input_params(psmouse, priv); 1552 1553 /* 1554 * Encode touchpad model so that it can be used to set 1555 * input device->id.version and be visible to userspace. 1556 * Because version is __u16 we have to drop something. 1557 * Hardware info bits seem to be good candidates as they 1558 * are documented to be for Synaptics corp. internal use. 1559 */ 1560 psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | 1561 (info->model_id & 0x000000ff); 1562 1563 if (absolute_mode) { 1564 psmouse->protocol_handler = synaptics_process_byte; 1565 psmouse->pktsize = 6; 1566 } else { 1567 /* Relative mode follows standard PS/2 mouse protocol */ 1568 psmouse->protocol_handler = psmouse_process_byte; 1569 psmouse->pktsize = 3; 1570 } 1571 1572 psmouse->set_rate = synaptics_set_rate; 1573 psmouse->disconnect = synaptics_disconnect; 1574 psmouse->reconnect = synaptics_reconnect; 1575 psmouse->cleanup = synaptics_reset; 1576 /* Synaptics can usually stay in sync without extra help */ 1577 psmouse->resync_time = 0; 1578 1579 if (SYN_CAP_PASS_THROUGH(info->capabilities)) 1580 synaptics_pt_create(psmouse); 1581 1582 /* 1583 * Toshiba's KBC seems to have trouble handling data from 1584 * Synaptics at full rate. Switch to a lower rate (roughly 1585 * the same rate as a standard PS/2 mouse). 1586 */ 1587 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1588 psmouse_info(psmouse, 1589 "Toshiba %s detected, limiting rate to 40pps.\n", 1590 dmi_get_system_info(DMI_PRODUCT_NAME)); 1591 psmouse->rate = 40; 1592 } 1593 1594 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { 1595 err = device_create_file(&psmouse->ps2dev.serio->dev, 1596 &psmouse_attr_disable_gesture.dattr); 1597 if (err) { 1598 psmouse_err(psmouse, 1599 "Failed to create disable_gesture attribute (%d)", 1600 err); 1601 goto init_fail; 1602 } 1603 } 1604 1605 return 0; 1606 1607 init_fail: 1608 kfree(priv); 1609 return err; 1610 } 1611 1612 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1613 { 1614 struct synaptics_device_info info; 1615 int error; 1616 1617 psmouse_reset(psmouse); 1618 1619 error = synaptics_query_hardware(psmouse, &info); 1620 if (error) { 1621 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1622 return error; 1623 } 1624 1625 return synaptics_init_ps2(psmouse, &info, absolute_mode); 1626 } 1627 1628 int synaptics_init_absolute(struct psmouse *psmouse) 1629 { 1630 return __synaptics_init(psmouse, true); 1631 } 1632 1633 int synaptics_init_relative(struct psmouse *psmouse) 1634 { 1635 return __synaptics_init(psmouse, false); 1636 } 1637 1638 static int synaptics_setup_ps2(struct psmouse *psmouse, 1639 struct synaptics_device_info *info) 1640 { 1641 bool absolute_mode = true; 1642 int error; 1643 1644 /* 1645 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1646 * packet spew overloads the EC such that key presses on the keyboard 1647 * are missed. Given that, don't even attempt to use Absolute mode. 1648 * Relative mode seems to work just fine. 1649 */ 1650 if (broken_olpc_ec) { 1651 psmouse_info(psmouse, 1652 "OLPC XO detected, forcing relative protocol.\n"); 1653 absolute_mode = false; 1654 } 1655 1656 error = synaptics_init_ps2(psmouse, info, absolute_mode); 1657 if (error) 1658 return error; 1659 1660 return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; 1661 } 1662 1663 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1664 1665 void __init synaptics_module_init(void) 1666 { 1667 } 1668 1669 static int __maybe_unused 1670 synaptics_setup_ps2(struct psmouse *psmouse, 1671 struct synaptics_device_info *info) 1672 { 1673 return -ENOSYS; 1674 } 1675 1676 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1677 1678 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS 1679 1680 /* 1681 * The newest Synaptics device can use a secondary bus (called InterTouch) which 1682 * provides a better bandwidth and allow a better control of the touchpads. 1683 * This is used to decide if we need to use this bus or not. 1684 */ 1685 enum { 1686 SYNAPTICS_INTERTOUCH_NOT_SET = -1, 1687 SYNAPTICS_INTERTOUCH_OFF, 1688 SYNAPTICS_INTERTOUCH_ON, 1689 }; 1690 1691 static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? 1692 SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; 1693 module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); 1694 MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); 1695 1696 static int synaptics_create_intertouch(struct psmouse *psmouse, 1697 struct synaptics_device_info *info, 1698 bool leave_breadcrumbs) 1699 { 1700 bool topbuttonpad = 1701 psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1702 !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); 1703 const struct rmi_device_platform_data pdata = { 1704 .sensor_pdata = { 1705 .sensor_type = rmi_sensor_touchpad, 1706 .axis_align.flip_y = true, 1707 /* to prevent cursors jumps: */ 1708 .kernel_tracking = true, 1709 .topbuttonpad = topbuttonpad, 1710 }, 1711 .f30_data = { 1712 .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), 1713 .trackstick_buttons = 1714 !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), 1715 }, 1716 }; 1717 const struct i2c_board_info intertouch_board = { 1718 I2C_BOARD_INFO("rmi4_smbus", 0x2c), 1719 .flags = I2C_CLIENT_HOST_NOTIFY, 1720 }; 1721 1722 return psmouse_smbus_init(psmouse, &intertouch_board, 1723 &pdata, sizeof(pdata), 1724 leave_breadcrumbs); 1725 } 1726 1727 /** 1728 * synaptics_setup_intertouch - called once the PS/2 devices are enumerated 1729 * and decides to instantiate a SMBus InterTouch device. 1730 */ 1731 static int synaptics_setup_intertouch(struct psmouse *psmouse, 1732 struct synaptics_device_info *info, 1733 bool leave_breadcrumbs) 1734 { 1735 int error; 1736 1737 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) 1738 return -ENXIO; 1739 1740 if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { 1741 if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1742 !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { 1743 1744 if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) 1745 psmouse_info(psmouse, 1746 "Your touchpad (%s) says it can support a different bus. " 1747 "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", 1748 psmouse->ps2dev.serio->firmware_id); 1749 1750 return -ENXIO; 1751 } 1752 } 1753 1754 psmouse_info(psmouse, "Trying to set up SMBus access\n"); 1755 1756 error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); 1757 if (error) { 1758 if (error == -EAGAIN) 1759 psmouse_info(psmouse, "SMbus companion is not ready yet\n"); 1760 else 1761 psmouse_err(psmouse, "unable to create intertouch device\n"); 1762 1763 return error; 1764 } 1765 1766 return 0; 1767 } 1768 1769 int synaptics_init_smbus(struct psmouse *psmouse) 1770 { 1771 struct synaptics_device_info info; 1772 int error; 1773 1774 psmouse_reset(psmouse); 1775 1776 error = synaptics_query_hardware(psmouse, &info); 1777 if (error) { 1778 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1779 return error; 1780 } 1781 1782 if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) 1783 return -ENXIO; 1784 1785 return synaptics_create_intertouch(psmouse, &info, false); 1786 } 1787 1788 #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1789 1790 static int __maybe_unused 1791 synaptics_setup_intertouch(struct psmouse *psmouse, 1792 struct synaptics_device_info *info, 1793 bool leave_breadcrumbs) 1794 { 1795 return -ENOSYS; 1796 } 1797 1798 int synaptics_init_smbus(struct psmouse *psmouse) 1799 { 1800 return -ENOSYS; 1801 } 1802 1803 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1804 1805 #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ 1806 defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) 1807 1808 int synaptics_init(struct psmouse *psmouse) 1809 { 1810 struct synaptics_device_info info; 1811 int error; 1812 int retval; 1813 1814 psmouse_reset(psmouse); 1815 1816 error = synaptics_query_hardware(psmouse, &info); 1817 if (error) { 1818 psmouse_err(psmouse, "Unable to query device: %d\n", error); 1819 return error; 1820 } 1821 1822 if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { 1823 if ((!IS_ENABLED(CONFIG_RMI4_SMB) || 1824 !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && 1825 /* Forcepads need F21, which is not ready */ 1826 !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { 1827 psmouse_warn(psmouse, 1828 "The touchpad can support a better bus than the too old PS/2 protocol. " 1829 "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); 1830 } 1831 1832 error = synaptics_setup_intertouch(psmouse, &info, true); 1833 if (!error) 1834 return PSMOUSE_SYNAPTICS_SMBUS; 1835 } 1836 1837 retval = synaptics_setup_ps2(psmouse, &info); 1838 if (retval < 0) { 1839 /* 1840 * Not using any flavor of Synaptics support, so clean up 1841 * SMbus breadcrumbs, if any. 1842 */ 1843 psmouse_smbus_cleanup(psmouse); 1844 } 1845 1846 return retval; 1847 } 1848 1849 #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1850 1851 int synaptics_init(struct psmouse *psmouse) 1852 { 1853 return -ENOSYS; 1854 } 1855 1856 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ 1857