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/slab.h> 33 #include "psmouse.h" 34 #include "synaptics.h" 35 36 /* 37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 38 * section 2.3.2, which says that they should be valid regardless of the 39 * actual size of the sensor. 40 * Note that newer firmware allows querying device for maximum useable 41 * coordinates. 42 */ 43 #define XMIN 0 44 #define XMAX 6143 45 #define YMIN 0 46 #define YMAX 6143 47 #define XMIN_NOMINAL 1472 48 #define XMAX_NOMINAL 5472 49 #define YMIN_NOMINAL 1408 50 #define YMAX_NOMINAL 4448 51 52 /* Size in bits of absolute position values reported by the hardware */ 53 #define ABS_POS_BITS 13 54 55 /* 56 * These values should represent the absolute maximum value that will 57 * be reported for a positive position value. Some Synaptics firmware 58 * uses this value to indicate a finger near the edge of the touchpad 59 * whose precise position cannot be determined. 60 * 61 * At least one touchpad is known to report positions in excess of this 62 * value which are actually negative values truncated to the 13-bit 63 * reporting range. These values have never been observed to be lower 64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 65 * negative and any other value as positive. 66 */ 67 #define X_MAX_POSITIVE 8176 68 #define Y_MAX_POSITIVE 8176 69 70 /* maximum ABS_MT_POSITION displacement (in mm) */ 71 #define DMAX 10 72 73 /***************************************************************************** 74 * Stuff we need even when we do not want native Synaptics support 75 ****************************************************************************/ 76 77 /* 78 * Set the synaptics touchpad mode byte by special commands 79 */ 80 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 81 { 82 unsigned char param[1]; 83 84 if (psmouse_sliced_command(psmouse, mode)) 85 return -1; 86 param[0] = SYN_PS_SET_MODE2; 87 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 88 return -1; 89 return 0; 90 } 91 92 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 93 { 94 struct ps2dev *ps2dev = &psmouse->ps2dev; 95 unsigned char param[4]; 96 97 param[0] = 0; 98 99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 100 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 101 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 102 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 103 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 104 105 if (param[1] != 0x47) 106 return -ENODEV; 107 108 if (set_properties) { 109 psmouse->vendor = "Synaptics"; 110 psmouse->name = "TouchPad"; 111 } 112 113 return 0; 114 } 115 116 void synaptics_reset(struct psmouse *psmouse) 117 { 118 /* reset touchpad back to relative mode, gestures enabled */ 119 synaptics_mode_cmd(psmouse, 0); 120 } 121 122 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 123 124 static bool cr48_profile_sensor; 125 126 #define ANY_BOARD_ID 0 127 struct min_max_quirk { 128 const char * const *pnp_ids; 129 struct { 130 unsigned long int min, max; 131 } board_id; 132 int x_min, x_max, y_min, y_max; 133 }; 134 135 static const struct min_max_quirk min_max_pnpid_table[] = { 136 { 137 (const char * const []){"LEN0033", NULL}, 138 {ANY_BOARD_ID, ANY_BOARD_ID}, 139 1024, 5052, 2258, 4832 140 }, 141 { 142 (const char * const []){"LEN0042", NULL}, 143 {ANY_BOARD_ID, ANY_BOARD_ID}, 144 1232, 5710, 1156, 4696 145 }, 146 { 147 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 148 "LEN0039", "LEN2002", "LEN2004", 149 NULL}, 150 {ANY_BOARD_ID, 2961}, 151 1024, 5112, 2024, 4832 152 }, 153 { 154 (const char * const []){"LEN2000", NULL}, 155 {ANY_BOARD_ID, ANY_BOARD_ID}, 156 1024, 5113, 2021, 4832 157 }, 158 { 159 (const char * const []){"LEN2001", NULL}, 160 {ANY_BOARD_ID, ANY_BOARD_ID}, 161 1024, 5022, 2508, 4832 162 }, 163 { 164 (const char * const []){"LEN2006", NULL}, 165 {2691, 2691}, 166 1024, 5045, 2457, 4832 167 }, 168 { 169 (const char * const []){"LEN2006", NULL}, 170 {ANY_BOARD_ID, ANY_BOARD_ID}, 171 1264, 5675, 1171, 4688 172 }, 173 { } 174 }; 175 176 /* This list has been kindly provided by Synaptics. */ 177 static const char * const topbuttonpad_pnp_ids[] = { 178 "LEN0017", 179 "LEN0018", 180 "LEN0019", 181 "LEN0023", 182 "LEN002A", 183 "LEN002B", 184 "LEN002C", 185 "LEN002D", 186 "LEN002E", 187 "LEN0033", /* Helix */ 188 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 189 "LEN0035", /* X240 */ 190 "LEN0036", /* T440 */ 191 "LEN0037", /* X1 Carbon 2nd */ 192 "LEN0038", 193 "LEN0039", /* T440s */ 194 "LEN0041", 195 "LEN0042", /* Yoga */ 196 "LEN0045", 197 "LEN0047", 198 "LEN0049", 199 "LEN2000", /* S540 */ 200 "LEN2001", /* Edge E431 */ 201 "LEN2002", /* Edge E531 */ 202 "LEN2003", 203 "LEN2004", /* L440 */ 204 "LEN2005", 205 "LEN2006", /* Edge E440/E540 */ 206 "LEN2007", 207 "LEN2008", 208 "LEN2009", 209 "LEN200A", 210 "LEN200B", 211 NULL 212 }; 213 214 /* This list has been kindly provided by Synaptics. */ 215 static const char * const forcepad_pnp_ids[] = { 216 "SYN300D", 217 "SYN3014", 218 NULL 219 }; 220 221 /***************************************************************************** 222 * Synaptics communications functions 223 ****************************************************************************/ 224 225 /* 226 * Synaptics touchpads report the y coordinate from bottom to top, which is 227 * opposite from what userspace expects. 228 * This function is used to invert y before reporting. 229 */ 230 static int synaptics_invert_y(int y) 231 { 232 return YMAX_NOMINAL + YMIN_NOMINAL - y; 233 } 234 235 /* 236 * Send a command to the synpatics touchpad by special commands 237 */ 238 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 239 { 240 if (psmouse_sliced_command(psmouse, c)) 241 return -1; 242 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 243 return -1; 244 return 0; 245 } 246 247 /* 248 * Read the model-id bytes from the touchpad 249 * see also SYN_MODEL_* macros 250 */ 251 static int synaptics_model_id(struct psmouse *psmouse) 252 { 253 struct synaptics_data *priv = psmouse->private; 254 unsigned char mi[3]; 255 256 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 257 return -1; 258 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 259 return 0; 260 } 261 262 static int synaptics_more_extended_queries(struct psmouse *psmouse) 263 { 264 struct synaptics_data *priv = psmouse->private; 265 unsigned char buf[3]; 266 267 if (synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf)) 268 return -1; 269 270 priv->ext_cap_10 = (buf[0]<<16) | (buf[1]<<8) | buf[2]; 271 272 return 0; 273 } 274 275 /* 276 * Read the board id and the "More Extended Queries" from the touchpad 277 * The board id is encoded in the "QUERY MODES" response 278 */ 279 static int synaptics_query_modes(struct psmouse *psmouse) 280 { 281 struct synaptics_data *priv = psmouse->private; 282 unsigned char bid[3]; 283 284 /* firmwares prior 7.5 have no board_id encoded */ 285 if (SYN_ID_FULL(priv->identity) < 0x705) 286 return 0; 287 288 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 289 return -1; 290 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 291 292 if (SYN_MEXT_CAP_BIT(bid[0])) 293 return synaptics_more_extended_queries(psmouse); 294 295 return 0; 296 } 297 298 /* 299 * Read the firmware id from the touchpad 300 */ 301 static int synaptics_firmware_id(struct psmouse *psmouse) 302 { 303 struct synaptics_data *priv = psmouse->private; 304 unsigned char fwid[3]; 305 306 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 307 return -1; 308 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 309 return 0; 310 } 311 312 /* 313 * Read the capability-bits from the touchpad 314 * see also the SYN_CAP_* macros 315 */ 316 static int synaptics_capability(struct psmouse *psmouse) 317 { 318 struct synaptics_data *priv = psmouse->private; 319 unsigned char cap[3]; 320 321 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 322 return -1; 323 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 324 priv->ext_cap = priv->ext_cap_0c = 0; 325 326 /* 327 * Older firmwares had submodel ID fixed to 0x47 328 */ 329 if (SYN_ID_FULL(priv->identity) < 0x705 && 330 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 331 return -1; 332 } 333 334 /* 335 * Unless capExtended is set the rest of the flags should be ignored 336 */ 337 if (!SYN_CAP_EXTENDED(priv->capabilities)) 338 priv->capabilities = 0; 339 340 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 341 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 342 psmouse_warn(psmouse, 343 "device claims to have extended capabilities, but I'm not able to read them.\n"); 344 } else { 345 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 346 347 /* 348 * if nExtBtn is greater than 8 it should be considered 349 * invalid and treated as 0 350 */ 351 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 352 priv->ext_cap &= 0xff0fff; 353 } 354 } 355 356 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 357 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 358 psmouse_warn(psmouse, 359 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 360 } else { 361 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 362 } 363 } 364 365 return 0; 366 } 367 368 /* 369 * Identify Touchpad 370 * See also the SYN_ID_* macros 371 */ 372 static int synaptics_identify(struct psmouse *psmouse) 373 { 374 struct synaptics_data *priv = psmouse->private; 375 unsigned char id[3]; 376 377 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 378 return -1; 379 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 380 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 381 return 0; 382 return -1; 383 } 384 385 /* 386 * Read touchpad resolution and maximum reported coordinates 387 * Resolution is left zero if touchpad does not support the query 388 */ 389 390 static int synaptics_resolution(struct psmouse *psmouse) 391 { 392 struct synaptics_data *priv = psmouse->private; 393 unsigned char resp[3]; 394 395 if (SYN_ID_MAJOR(priv->identity) < 4) 396 return 0; 397 398 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 399 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 400 priv->x_res = resp[0]; /* x resolution in units/mm */ 401 priv->y_res = resp[2]; /* y resolution in units/mm */ 402 } 403 } 404 405 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 406 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 407 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 408 psmouse_warn(psmouse, 409 "device claims to have max coordinates query, but I'm not able to read it.\n"); 410 } else { 411 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 412 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 413 psmouse_info(psmouse, 414 "queried max coordinates: x [..%d], y [..%d]\n", 415 priv->x_max, priv->y_max); 416 } 417 } 418 419 if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) && 420 (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 || 421 /* 422 * Firmware v8.1 does not report proper number of extended 423 * capabilities, but has been proven to report correct min 424 * coordinates. 425 */ 426 SYN_ID_FULL(priv->identity) == 0x801)) { 427 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 428 psmouse_warn(psmouse, 429 "device claims to have min coordinates query, but I'm not able to read it.\n"); 430 } else { 431 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 432 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 433 psmouse_info(psmouse, 434 "queried min coordinates: x [%d..], y [%d..]\n", 435 priv->x_min, priv->y_min); 436 } 437 } 438 439 return 0; 440 } 441 442 /* 443 * Apply quirk(s) if the hardware matches 444 */ 445 446 static void synaptics_apply_quirks(struct psmouse *psmouse) 447 { 448 struct synaptics_data *priv = psmouse->private; 449 int i; 450 451 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 452 if (!psmouse_matches_pnp_id(psmouse, 453 min_max_pnpid_table[i].pnp_ids)) 454 continue; 455 456 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 457 priv->board_id < min_max_pnpid_table[i].board_id.min) 458 continue; 459 460 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 461 priv->board_id > min_max_pnpid_table[i].board_id.max) 462 continue; 463 464 priv->x_min = min_max_pnpid_table[i].x_min; 465 priv->x_max = min_max_pnpid_table[i].x_max; 466 priv->y_min = min_max_pnpid_table[i].y_min; 467 priv->y_max = min_max_pnpid_table[i].y_max; 468 psmouse_info(psmouse, 469 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 470 priv->x_min, priv->x_max, 471 priv->y_min, priv->y_max); 472 break; 473 } 474 } 475 476 static int synaptics_query_hardware(struct psmouse *psmouse) 477 { 478 if (synaptics_identify(psmouse)) 479 return -1; 480 if (synaptics_model_id(psmouse)) 481 return -1; 482 if (synaptics_firmware_id(psmouse)) 483 return -1; 484 if (synaptics_query_modes(psmouse)) 485 return -1; 486 if (synaptics_capability(psmouse)) 487 return -1; 488 if (synaptics_resolution(psmouse)) 489 return -1; 490 491 synaptics_apply_quirks(psmouse); 492 493 return 0; 494 } 495 496 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 497 { 498 static unsigned char param = 0xc8; 499 struct synaptics_data *priv = psmouse->private; 500 501 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 502 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 503 return 0; 504 505 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 506 return -1; 507 508 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 509 return -1; 510 511 /* Advanced gesture mode also sends multi finger data */ 512 priv->capabilities |= BIT(1); 513 514 return 0; 515 } 516 517 static int synaptics_set_mode(struct psmouse *psmouse) 518 { 519 struct synaptics_data *priv = psmouse->private; 520 521 priv->mode = 0; 522 if (priv->absolute_mode) 523 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 524 if (priv->disable_gesture) 525 priv->mode |= SYN_BIT_DISABLE_GESTURE; 526 if (psmouse->rate >= 80) 527 priv->mode |= SYN_BIT_HIGH_RATE; 528 if (SYN_CAP_EXTENDED(priv->capabilities)) 529 priv->mode |= SYN_BIT_W_MODE; 530 531 if (synaptics_mode_cmd(psmouse, priv->mode)) 532 return -1; 533 534 if (priv->absolute_mode && 535 synaptics_set_advanced_gesture_mode(psmouse)) { 536 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 537 return -1; 538 } 539 540 return 0; 541 } 542 543 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 544 { 545 struct synaptics_data *priv = psmouse->private; 546 547 if (rate >= 80) { 548 priv->mode |= SYN_BIT_HIGH_RATE; 549 psmouse->rate = 80; 550 } else { 551 priv->mode &= ~SYN_BIT_HIGH_RATE; 552 psmouse->rate = 40; 553 } 554 555 synaptics_mode_cmd(psmouse, priv->mode); 556 } 557 558 /***************************************************************************** 559 * Synaptics pass-through PS/2 port support 560 ****************************************************************************/ 561 static int synaptics_pt_write(struct serio *serio, unsigned char c) 562 { 563 struct psmouse *parent = serio_get_drvdata(serio->parent); 564 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 565 566 if (psmouse_sliced_command(parent, c)) 567 return -1; 568 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 569 return -1; 570 return 0; 571 } 572 573 static int synaptics_pt_start(struct serio *serio) 574 { 575 struct psmouse *parent = serio_get_drvdata(serio->parent); 576 struct synaptics_data *priv = parent->private; 577 578 serio_pause_rx(parent->ps2dev.serio); 579 priv->pt_port = serio; 580 serio_continue_rx(parent->ps2dev.serio); 581 582 return 0; 583 } 584 585 static void synaptics_pt_stop(struct serio *serio) 586 { 587 struct psmouse *parent = serio_get_drvdata(serio->parent); 588 struct synaptics_data *priv = parent->private; 589 590 serio_pause_rx(parent->ps2dev.serio); 591 priv->pt_port = NULL; 592 serio_continue_rx(parent->ps2dev.serio); 593 } 594 595 static int synaptics_is_pt_packet(unsigned char *buf) 596 { 597 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 598 } 599 600 static void synaptics_pass_pt_packet(struct serio *ptport, 601 unsigned char *packet) 602 { 603 struct psmouse *child = serio_get_drvdata(ptport); 604 605 if (child && child->state == PSMOUSE_ACTIVATED) { 606 serio_interrupt(ptport, packet[1], 0); 607 serio_interrupt(ptport, packet[4], 0); 608 serio_interrupt(ptport, packet[5], 0); 609 if (child->pktsize == 4) 610 serio_interrupt(ptport, packet[2], 0); 611 } else { 612 serio_interrupt(ptport, packet[1], 0); 613 } 614 } 615 616 static void synaptics_pt_activate(struct psmouse *psmouse) 617 { 618 struct synaptics_data *priv = psmouse->private; 619 struct psmouse *child = serio_get_drvdata(priv->pt_port); 620 621 /* adjust the touchpad to child's choice of protocol */ 622 if (child) { 623 if (child->pktsize == 4) 624 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 625 else 626 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 627 628 if (synaptics_mode_cmd(psmouse, priv->mode)) 629 psmouse_warn(psmouse, 630 "failed to switch guest protocol\n"); 631 } 632 } 633 634 static void synaptics_pt_create(struct psmouse *psmouse) 635 { 636 struct serio *serio; 637 638 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 639 if (!serio) { 640 psmouse_err(psmouse, 641 "not enough memory for pass-through port\n"); 642 return; 643 } 644 645 serio->id.type = SERIO_PS_PSTHRU; 646 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 647 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 648 serio->write = synaptics_pt_write; 649 serio->start = synaptics_pt_start; 650 serio->stop = synaptics_pt_stop; 651 serio->parent = psmouse->ps2dev.serio; 652 653 psmouse->pt_activate = synaptics_pt_activate; 654 655 psmouse_info(psmouse, "serio: %s port at %s\n", 656 serio->name, psmouse->phys); 657 serio_register_port(serio); 658 } 659 660 /***************************************************************************** 661 * Functions to interpret the absolute mode packets 662 ****************************************************************************/ 663 664 static void synaptics_parse_agm(const unsigned char buf[], 665 struct synaptics_data *priv, 666 struct synaptics_hw_state *hw) 667 { 668 struct synaptics_hw_state *agm = &priv->agm; 669 int agm_packet_type; 670 671 agm_packet_type = (buf[5] & 0x30) >> 4; 672 switch (agm_packet_type) { 673 case 1: 674 /* Gesture packet: (x, y, z) half resolution */ 675 agm->w = hw->w; 676 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 677 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 678 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 679 break; 680 681 case 2: 682 /* AGM-CONTACT packet: we are only interested in the count */ 683 priv->agm_count = buf[1]; 684 break; 685 686 default: 687 break; 688 } 689 } 690 691 static void synaptics_parse_ext_buttons(const unsigned char buf[], 692 struct synaptics_data *priv, 693 struct synaptics_hw_state *hw) 694 { 695 unsigned int ext_bits = 696 (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 697 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 698 699 hw->ext_buttons = buf[4] & ext_mask; 700 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 701 } 702 703 static int synaptics_parse_hw_state(const unsigned char buf[], 704 struct synaptics_data *priv, 705 struct synaptics_hw_state *hw) 706 { 707 memset(hw, 0, sizeof(struct synaptics_hw_state)); 708 709 if (SYN_MODEL_NEWABS(priv->model_id)) { 710 hw->w = (((buf[0] & 0x30) >> 2) | 711 ((buf[0] & 0x04) >> 1) | 712 ((buf[3] & 0x04) >> 2)); 713 714 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 715 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 716 hw->w == 2) { 717 synaptics_parse_agm(buf, priv, hw); 718 return 1; 719 } 720 721 hw->x = (((buf[3] & 0x10) << 8) | 722 ((buf[1] & 0x0f) << 8) | 723 buf[4]); 724 hw->y = (((buf[3] & 0x20) << 7) | 725 ((buf[1] & 0xf0) << 4) | 726 buf[5]); 727 hw->z = buf[2]; 728 729 hw->left = (buf[0] & 0x01) ? 1 : 0; 730 hw->right = (buf[0] & 0x02) ? 1 : 0; 731 732 if (priv->is_forcepad) { 733 /* 734 * ForcePads, like Clickpads, use middle button 735 * bits to report primary button clicks. 736 * Unfortunately they report primary button not 737 * only when user presses on the pad above certain 738 * threshold, but also when there are more than one 739 * finger on the touchpad, which interferes with 740 * out multi-finger gestures. 741 */ 742 if (hw->z == 0) { 743 /* No contacts */ 744 priv->press = priv->report_press = false; 745 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 746 /* 747 * Single-finger touch with pressure above 748 * the threshold. If pressure stays long 749 * enough, we'll start reporting primary 750 * button. We rely on the device continuing 751 * sending data even if finger does not 752 * move. 753 */ 754 if (!priv->press) { 755 priv->press_start = jiffies; 756 priv->press = true; 757 } else if (time_after(jiffies, 758 priv->press_start + 759 msecs_to_jiffies(50))) { 760 priv->report_press = true; 761 } 762 } else { 763 priv->press = false; 764 } 765 766 hw->left = priv->report_press; 767 768 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 769 /* 770 * Clickpad's button is transmitted as middle button, 771 * however, since it is primary button, we will report 772 * it as BTN_LEFT. 773 */ 774 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 775 776 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 777 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 778 if (hw->w == 2) 779 hw->scroll = (signed char)(buf[1]); 780 } 781 782 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 783 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 784 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 785 } 786 787 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 && 788 ((buf[0] ^ buf[3]) & 0x02)) { 789 synaptics_parse_ext_buttons(buf, priv, hw); 790 } 791 } else { 792 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 793 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 794 795 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 796 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 797 798 hw->left = (buf[0] & 0x01) ? 1 : 0; 799 hw->right = (buf[0] & 0x02) ? 1 : 0; 800 } 801 802 /* 803 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 804 * is used by some firmware to indicate a finger at the edge of 805 * the touchpad whose precise position cannot be determined, so 806 * convert these values to the maximum axis value. 807 */ 808 if (hw->x > X_MAX_POSITIVE) 809 hw->x -= 1 << ABS_POS_BITS; 810 else if (hw->x == X_MAX_POSITIVE) 811 hw->x = XMAX; 812 813 if (hw->y > Y_MAX_POSITIVE) 814 hw->y -= 1 << ABS_POS_BITS; 815 else if (hw->y == Y_MAX_POSITIVE) 816 hw->y = YMAX; 817 818 return 0; 819 } 820 821 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 822 bool active, int x, int y) 823 { 824 input_mt_slot(dev, slot); 825 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 826 if (active) { 827 input_report_abs(dev, ABS_MT_POSITION_X, x); 828 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 829 } 830 } 831 832 static void synaptics_report_semi_mt_data(struct input_dev *dev, 833 const struct synaptics_hw_state *a, 834 const struct synaptics_hw_state *b, 835 int num_fingers) 836 { 837 if (num_fingers >= 2) { 838 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 839 min(a->y, b->y)); 840 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 841 max(a->y, b->y)); 842 } else if (num_fingers == 1) { 843 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 844 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 845 } else { 846 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 847 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 848 } 849 } 850 851 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 852 const struct synaptics_hw_state *hw) 853 { 854 struct input_dev *dev = psmouse->dev; 855 struct synaptics_data *priv = psmouse->private; 856 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 857 int i; 858 859 if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)) 860 return; 861 862 /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ 863 if ((SYN_ID_FULL(priv->identity) == 0x801 || 864 SYN_ID_FULL(priv->identity) == 0x802) && 865 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 866 return; 867 868 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) { 869 for (i = 0; i < ext_bits; i++) { 870 input_report_key(dev, BTN_0 + 2 * i, 871 hw->ext_buttons & (1 << i)); 872 input_report_key(dev, BTN_1 + 2 * i, 873 hw->ext_buttons & (1 << (i + ext_bits))); 874 } 875 return; 876 } 877 878 /* 879 * This generation of touchpads has the trackstick buttons 880 * physically wired to the touchpad. Re-route them through 881 * the pass-through interface. 882 */ 883 if (priv->pt_port) { 884 u8 pt_buttons; 885 886 /* The trackstick expects at most 3 buttons */ 887 pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons) | 888 SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 889 SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 890 891 serio_interrupt(priv->pt_port, 892 PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); 893 serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); 894 } 895 } 896 897 static void synaptics_report_buttons(struct psmouse *psmouse, 898 const struct synaptics_hw_state *hw) 899 { 900 struct input_dev *dev = psmouse->dev; 901 struct synaptics_data *priv = psmouse->private; 902 903 input_report_key(dev, BTN_LEFT, hw->left); 904 input_report_key(dev, BTN_RIGHT, hw->right); 905 906 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 907 input_report_key(dev, BTN_MIDDLE, hw->middle); 908 909 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 910 input_report_key(dev, BTN_FORWARD, hw->up); 911 input_report_key(dev, BTN_BACK, hw->down); 912 } 913 914 synaptics_report_ext_buttons(psmouse, hw); 915 } 916 917 static void synaptics_report_mt_data(struct psmouse *psmouse, 918 const struct synaptics_hw_state *sgm, 919 int num_fingers) 920 { 921 struct input_dev *dev = psmouse->dev; 922 struct synaptics_data *priv = psmouse->private; 923 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 924 struct input_mt_pos pos[2]; 925 int slot[2], nsemi, i; 926 927 nsemi = clamp_val(num_fingers, 0, 2); 928 929 for (i = 0; i < nsemi; i++) { 930 pos[i].x = hw[i]->x; 931 pos[i].y = synaptics_invert_y(hw[i]->y); 932 } 933 934 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res); 935 936 for (i = 0; i < nsemi; i++) { 937 input_mt_slot(dev, slot[i]); 938 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 939 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 940 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 941 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 942 } 943 944 input_mt_drop_unused(dev); 945 946 /* Don't use active slot count to generate BTN_TOOL events. */ 947 input_mt_report_pointer_emulation(dev, false); 948 949 /* Send the number of fingers reported by touchpad itself. */ 950 input_mt_report_finger_count(dev, num_fingers); 951 952 synaptics_report_buttons(psmouse, sgm); 953 954 input_sync(dev); 955 } 956 957 static void synaptics_image_sensor_process(struct psmouse *psmouse, 958 struct synaptics_hw_state *sgm) 959 { 960 struct synaptics_data *priv = psmouse->private; 961 int num_fingers; 962 963 /* 964 * Update mt_state using the new finger count and current mt_state. 965 */ 966 if (sgm->z == 0) 967 num_fingers = 0; 968 else if (sgm->w >= 4) 969 num_fingers = 1; 970 else if (sgm->w == 0) 971 num_fingers = 2; 972 else if (sgm->w == 1) 973 num_fingers = priv->agm_count ? priv->agm_count : 3; 974 else 975 num_fingers = 4; 976 977 /* Send resulting input events to user space */ 978 synaptics_report_mt_data(psmouse, sgm, num_fingers); 979 } 980 981 /* 982 * called for each full received packet from the touchpad 983 */ 984 static void synaptics_process_packet(struct psmouse *psmouse) 985 { 986 struct input_dev *dev = psmouse->dev; 987 struct synaptics_data *priv = psmouse->private; 988 struct synaptics_hw_state hw; 989 int num_fingers; 990 int finger_width; 991 992 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 993 return; 994 995 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 996 synaptics_image_sensor_process(psmouse, &hw); 997 return; 998 } 999 1000 if (hw.scroll) { 1001 priv->scroll += hw.scroll; 1002 1003 while (priv->scroll >= 4) { 1004 input_report_key(dev, BTN_BACK, !hw.down); 1005 input_sync(dev); 1006 input_report_key(dev, BTN_BACK, hw.down); 1007 input_sync(dev); 1008 priv->scroll -= 4; 1009 } 1010 while (priv->scroll <= -4) { 1011 input_report_key(dev, BTN_FORWARD, !hw.up); 1012 input_sync(dev); 1013 input_report_key(dev, BTN_FORWARD, hw.up); 1014 input_sync(dev); 1015 priv->scroll += 4; 1016 } 1017 return; 1018 } 1019 1020 if (hw.z > 0 && hw.x > 1) { 1021 num_fingers = 1; 1022 finger_width = 5; 1023 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1024 switch (hw.w) { 1025 case 0 ... 1: 1026 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1027 num_fingers = hw.w + 2; 1028 break; 1029 case 2: 1030 if (SYN_MODEL_PEN(priv->model_id)) 1031 ; /* Nothing, treat a pen as a single finger */ 1032 break; 1033 case 4 ... 15: 1034 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1035 finger_width = hw.w; 1036 break; 1037 } 1038 } 1039 } else { 1040 num_fingers = 0; 1041 finger_width = 0; 1042 } 1043 1044 if (cr48_profile_sensor) { 1045 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1046 return; 1047 } 1048 1049 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1050 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1051 num_fingers); 1052 1053 /* Post events 1054 * BTN_TOUCH has to be first as mousedev relies on it when doing 1055 * absolute -> relative conversion 1056 */ 1057 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1058 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1059 1060 if (num_fingers > 0) { 1061 input_report_abs(dev, ABS_X, hw.x); 1062 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1063 } 1064 input_report_abs(dev, ABS_PRESSURE, hw.z); 1065 1066 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1067 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1068 1069 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1070 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1071 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1072 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1073 } 1074 1075 synaptics_report_buttons(psmouse, &hw); 1076 1077 input_sync(dev); 1078 } 1079 1080 static int synaptics_validate_byte(struct psmouse *psmouse, 1081 int idx, unsigned char pkt_type) 1082 { 1083 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1084 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1085 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1086 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1087 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1088 const char *packet = psmouse->packet; 1089 1090 if (idx < 0 || idx > 4) 1091 return 0; 1092 1093 switch (pkt_type) { 1094 1095 case SYN_NEWABS: 1096 case SYN_NEWABS_RELAXED: 1097 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1098 1099 case SYN_NEWABS_STRICT: 1100 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1101 1102 case SYN_OLDABS: 1103 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1104 1105 default: 1106 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1107 return 0; 1108 } 1109 } 1110 1111 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1112 { 1113 int i; 1114 1115 for (i = 0; i < 5; i++) 1116 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1117 psmouse_info(psmouse, "using relaxed packet validation\n"); 1118 return SYN_NEWABS_RELAXED; 1119 } 1120 1121 return SYN_NEWABS_STRICT; 1122 } 1123 1124 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1125 { 1126 struct synaptics_data *priv = psmouse->private; 1127 1128 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1129 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1130 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1131 1132 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1133 synaptics_is_pt_packet(psmouse->packet)) { 1134 if (priv->pt_port) 1135 synaptics_pass_pt_packet(priv->pt_port, 1136 psmouse->packet); 1137 } else 1138 synaptics_process_packet(psmouse); 1139 1140 return PSMOUSE_FULL_PACKET; 1141 } 1142 1143 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1144 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1145 } 1146 1147 /***************************************************************************** 1148 * Driver initialization/cleanup functions 1149 ****************************************************************************/ 1150 static void set_abs_position_params(struct input_dev *dev, 1151 struct synaptics_data *priv, int x_code, 1152 int y_code) 1153 { 1154 int x_min = priv->x_min ?: XMIN_NOMINAL; 1155 int x_max = priv->x_max ?: XMAX_NOMINAL; 1156 int y_min = priv->y_min ?: YMIN_NOMINAL; 1157 int y_max = priv->y_max ?: YMAX_NOMINAL; 1158 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1159 SYN_REDUCED_FILTER_FUZZ : 0; 1160 1161 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1162 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1163 input_abs_set_res(dev, x_code, priv->x_res); 1164 input_abs_set_res(dev, y_code, priv->y_res); 1165 } 1166 1167 static void set_input_params(struct psmouse *psmouse, 1168 struct synaptics_data *priv) 1169 { 1170 struct input_dev *dev = psmouse->dev; 1171 int i; 1172 1173 /* Things that apply to both modes */ 1174 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1175 __set_bit(EV_KEY, dev->evbit); 1176 __set_bit(BTN_LEFT, dev->keybit); 1177 __set_bit(BTN_RIGHT, dev->keybit); 1178 1179 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1180 __set_bit(BTN_MIDDLE, dev->keybit); 1181 1182 if (!priv->absolute_mode) { 1183 /* Relative mode */ 1184 __set_bit(EV_REL, dev->evbit); 1185 __set_bit(REL_X, dev->relbit); 1186 __set_bit(REL_Y, dev->relbit); 1187 return; 1188 } 1189 1190 /* Absolute mode */ 1191 __set_bit(EV_ABS, dev->evbit); 1192 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1193 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1194 1195 if (cr48_profile_sensor) 1196 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1197 1198 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1199 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1200 ABS_MT_POSITION_Y); 1201 /* Image sensors can report per-contact pressure */ 1202 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1203 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1204 1205 /* Image sensors can signal 4 and 5 finger clicks */ 1206 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1207 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1208 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1209 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1210 ABS_MT_POSITION_Y); 1211 /* 1212 * Profile sensor in CR-48 tracks contacts reasonably well, 1213 * other non-image sensors with AGM use semi-mt. 1214 */ 1215 input_mt_init_slots(dev, 2, 1216 INPUT_MT_POINTER | 1217 (cr48_profile_sensor ? 1218 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1219 } 1220 1221 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1222 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1223 1224 __set_bit(BTN_TOUCH, dev->keybit); 1225 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1226 1227 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1228 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1229 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1230 } 1231 1232 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1233 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1234 __set_bit(BTN_FORWARD, dev->keybit); 1235 __set_bit(BTN_BACK, dev->keybit); 1236 } 1237 1238 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1239 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1240 __set_bit(BTN_0 + i, dev->keybit); 1241 1242 __clear_bit(EV_REL, dev->evbit); 1243 __clear_bit(REL_X, dev->relbit); 1244 __clear_bit(REL_Y, dev->relbit); 1245 1246 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1247 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1248 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1249 !SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1250 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1251 /* Clickpads report only left button */ 1252 __clear_bit(BTN_RIGHT, dev->keybit); 1253 __clear_bit(BTN_MIDDLE, dev->keybit); 1254 } 1255 } 1256 1257 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1258 void *data, char *buf) 1259 { 1260 struct synaptics_data *priv = psmouse->private; 1261 1262 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1263 } 1264 1265 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1266 void *data, const char *buf, 1267 size_t len) 1268 { 1269 struct synaptics_data *priv = psmouse->private; 1270 unsigned int value; 1271 int err; 1272 1273 err = kstrtouint(buf, 10, &value); 1274 if (err) 1275 return err; 1276 1277 if (value > 1) 1278 return -EINVAL; 1279 1280 if (value == priv->disable_gesture) 1281 return len; 1282 1283 priv->disable_gesture = value; 1284 if (value) 1285 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1286 else 1287 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1288 1289 if (synaptics_mode_cmd(psmouse, priv->mode)) 1290 return -EIO; 1291 1292 return len; 1293 } 1294 1295 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1296 synaptics_show_disable_gesture, 1297 synaptics_set_disable_gesture); 1298 1299 static void synaptics_disconnect(struct psmouse *psmouse) 1300 { 1301 struct synaptics_data *priv = psmouse->private; 1302 1303 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1304 device_remove_file(&psmouse->ps2dev.serio->dev, 1305 &psmouse_attr_disable_gesture.dattr); 1306 1307 synaptics_reset(psmouse); 1308 kfree(priv); 1309 psmouse->private = NULL; 1310 } 1311 1312 static int synaptics_reconnect(struct psmouse *psmouse) 1313 { 1314 struct synaptics_data *priv = psmouse->private; 1315 struct synaptics_data old_priv = *priv; 1316 unsigned char param[2]; 1317 int retry = 0; 1318 int error; 1319 1320 do { 1321 psmouse_reset(psmouse); 1322 if (retry) { 1323 /* 1324 * On some boxes, right after resuming, the touchpad 1325 * needs some time to finish initializing (I assume 1326 * it needs time to calibrate) and start responding 1327 * to Synaptics-specific queries, so let's wait a 1328 * bit. 1329 */ 1330 ssleep(1); 1331 } 1332 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1333 error = synaptics_detect(psmouse, 0); 1334 } while (error && ++retry < 3); 1335 1336 if (error) 1337 return -1; 1338 1339 if (retry > 1) 1340 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1341 1342 if (synaptics_query_hardware(psmouse)) { 1343 psmouse_err(psmouse, "Unable to query device.\n"); 1344 return -1; 1345 } 1346 1347 if (synaptics_set_mode(psmouse)) { 1348 psmouse_err(psmouse, "Unable to initialize device.\n"); 1349 return -1; 1350 } 1351 1352 if (old_priv.identity != priv->identity || 1353 old_priv.model_id != priv->model_id || 1354 old_priv.capabilities != priv->capabilities || 1355 old_priv.ext_cap != priv->ext_cap) { 1356 psmouse_err(psmouse, 1357 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1358 old_priv.identity, priv->identity, 1359 old_priv.model_id, priv->model_id, 1360 old_priv.capabilities, priv->capabilities, 1361 old_priv.ext_cap, priv->ext_cap); 1362 return -1; 1363 } 1364 1365 return 0; 1366 } 1367 1368 static bool impaired_toshiba_kbc; 1369 1370 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1371 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1372 { 1373 /* Toshiba Satellite */ 1374 .matches = { 1375 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1376 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1377 }, 1378 }, 1379 { 1380 /* Toshiba Dynabook */ 1381 .matches = { 1382 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1383 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1384 }, 1385 }, 1386 { 1387 /* Toshiba Portege M300 */ 1388 .matches = { 1389 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1390 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1391 }, 1392 1393 }, 1394 { 1395 /* Toshiba Portege M300 */ 1396 .matches = { 1397 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1398 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1399 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1400 }, 1401 1402 }, 1403 #endif 1404 { } 1405 }; 1406 1407 static bool broken_olpc_ec; 1408 1409 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1410 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1411 { 1412 /* OLPC XO-1 or XO-1.5 */ 1413 .matches = { 1414 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1415 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1416 }, 1417 }, 1418 #endif 1419 { } 1420 }; 1421 1422 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1423 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1424 { 1425 /* Cr-48 Chromebook (Codename Mario) */ 1426 .matches = { 1427 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1428 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1429 }, 1430 }, 1431 #endif 1432 { } 1433 }; 1434 1435 void __init synaptics_module_init(void) 1436 { 1437 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1438 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1439 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1440 } 1441 1442 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1443 { 1444 struct synaptics_data *priv; 1445 int err = -1; 1446 1447 /* 1448 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1449 * packet spew overloads the EC such that key presses on the keyboard 1450 * are missed. Given that, don't even attempt to use Absolute mode. 1451 * Relative mode seems to work just fine. 1452 */ 1453 if (absolute_mode && broken_olpc_ec) { 1454 psmouse_info(psmouse, 1455 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1456 return -ENODEV; 1457 } 1458 1459 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1460 if (!priv) 1461 return -ENOMEM; 1462 1463 psmouse_reset(psmouse); 1464 1465 if (synaptics_query_hardware(psmouse)) { 1466 psmouse_err(psmouse, "Unable to query device.\n"); 1467 goto init_fail; 1468 } 1469 1470 priv->absolute_mode = absolute_mode; 1471 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1472 priv->disable_gesture = true; 1473 1474 /* 1475 * Unfortunately ForcePad capability is not exported over PS/2, 1476 * so we have to resort to checking PNP IDs. 1477 */ 1478 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1479 1480 if (synaptics_set_mode(psmouse)) { 1481 psmouse_err(psmouse, "Unable to initialize device.\n"); 1482 goto init_fail; 1483 } 1484 1485 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1486 1487 psmouse_info(psmouse, 1488 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1489 SYN_ID_MODEL(priv->identity), 1490 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1491 priv->model_id, 1492 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1493 priv->ext_cap_10, priv->board_id, priv->firmware_id); 1494 1495 set_input_params(psmouse, priv); 1496 1497 /* 1498 * Encode touchpad model so that it can be used to set 1499 * input device->id.version and be visible to userspace. 1500 * Because version is __u16 we have to drop something. 1501 * Hardware info bits seem to be good candidates as they 1502 * are documented to be for Synaptics corp. internal use. 1503 */ 1504 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1505 (priv->model_id & 0x000000ff); 1506 1507 if (absolute_mode) { 1508 psmouse->protocol_handler = synaptics_process_byte; 1509 psmouse->pktsize = 6; 1510 } else { 1511 /* Relative mode follows standard PS/2 mouse protocol */ 1512 psmouse->protocol_handler = psmouse_process_byte; 1513 psmouse->pktsize = 3; 1514 } 1515 1516 psmouse->set_rate = synaptics_set_rate; 1517 psmouse->disconnect = synaptics_disconnect; 1518 psmouse->reconnect = synaptics_reconnect; 1519 psmouse->cleanup = synaptics_reset; 1520 /* Synaptics can usually stay in sync without extra help */ 1521 psmouse->resync_time = 0; 1522 1523 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1524 synaptics_pt_create(psmouse); 1525 1526 /* 1527 * Toshiba's KBC seems to have trouble handling data from 1528 * Synaptics at full rate. Switch to a lower rate (roughly 1529 * the same rate as a standard PS/2 mouse). 1530 */ 1531 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1532 psmouse_info(psmouse, 1533 "Toshiba %s detected, limiting rate to 40pps.\n", 1534 dmi_get_system_info(DMI_PRODUCT_NAME)); 1535 psmouse->rate = 40; 1536 } 1537 1538 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1539 err = device_create_file(&psmouse->ps2dev.serio->dev, 1540 &psmouse_attr_disable_gesture.dattr); 1541 if (err) { 1542 psmouse_err(psmouse, 1543 "Failed to create disable_gesture attribute (%d)", 1544 err); 1545 goto init_fail; 1546 } 1547 } 1548 1549 return 0; 1550 1551 init_fail: 1552 kfree(priv); 1553 return err; 1554 } 1555 1556 int synaptics_init(struct psmouse *psmouse) 1557 { 1558 return __synaptics_init(psmouse, true); 1559 } 1560 1561 int synaptics_init_relative(struct psmouse *psmouse) 1562 { 1563 return __synaptics_init(psmouse, false); 1564 } 1565 1566 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1567 1568 void __init synaptics_module_init(void) 1569 { 1570 } 1571 1572 int synaptics_init(struct psmouse *psmouse) 1573 { 1574 return -ENOSYS; 1575 } 1576 1577 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1578