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; 522 523 if (priv->absolute_mode) { 524 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 525 if (SYN_CAP_EXTENDED(priv->capabilities)) 526 priv->mode |= SYN_BIT_W_MODE; 527 } 528 529 if (!SYN_MODE_WMODE(priv->mode) && priv->disable_gesture) 530 priv->mode |= SYN_BIT_DISABLE_GESTURE; 531 532 if (psmouse->rate >= 80) 533 priv->mode |= SYN_BIT_HIGH_RATE; 534 535 if (synaptics_mode_cmd(psmouse, priv->mode)) 536 return -1; 537 538 if (priv->absolute_mode && 539 synaptics_set_advanced_gesture_mode(psmouse)) { 540 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 541 return -1; 542 } 543 544 return 0; 545 } 546 547 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 548 { 549 struct synaptics_data *priv = psmouse->private; 550 551 if (rate >= 80) { 552 priv->mode |= SYN_BIT_HIGH_RATE; 553 psmouse->rate = 80; 554 } else { 555 priv->mode &= ~SYN_BIT_HIGH_RATE; 556 psmouse->rate = 40; 557 } 558 559 synaptics_mode_cmd(psmouse, priv->mode); 560 } 561 562 /***************************************************************************** 563 * Synaptics pass-through PS/2 port support 564 ****************************************************************************/ 565 static int synaptics_pt_write(struct serio *serio, unsigned char c) 566 { 567 struct psmouse *parent = serio_get_drvdata(serio->parent); 568 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 569 570 if (psmouse_sliced_command(parent, c)) 571 return -1; 572 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 573 return -1; 574 return 0; 575 } 576 577 static int synaptics_pt_start(struct serio *serio) 578 { 579 struct psmouse *parent = serio_get_drvdata(serio->parent); 580 struct synaptics_data *priv = parent->private; 581 582 serio_pause_rx(parent->ps2dev.serio); 583 priv->pt_port = serio; 584 serio_continue_rx(parent->ps2dev.serio); 585 586 return 0; 587 } 588 589 static void synaptics_pt_stop(struct serio *serio) 590 { 591 struct psmouse *parent = serio_get_drvdata(serio->parent); 592 struct synaptics_data *priv = parent->private; 593 594 serio_pause_rx(parent->ps2dev.serio); 595 priv->pt_port = NULL; 596 serio_continue_rx(parent->ps2dev.serio); 597 } 598 599 static int synaptics_is_pt_packet(unsigned char *buf) 600 { 601 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 602 } 603 604 static void synaptics_pass_pt_packet(struct psmouse *psmouse, 605 struct serio *ptport, 606 unsigned char *packet) 607 { 608 struct synaptics_data *priv = psmouse->private; 609 struct psmouse *child = serio_get_drvdata(ptport); 610 611 if (child && child->state == PSMOUSE_ACTIVATED) { 612 serio_interrupt(ptport, packet[1] | priv->pt_buttons, 0); 613 serio_interrupt(ptport, packet[4], 0); 614 serio_interrupt(ptport, packet[5], 0); 615 if (child->pktsize == 4) 616 serio_interrupt(ptport, packet[2], 0); 617 } else { 618 serio_interrupt(ptport, packet[1], 0); 619 } 620 } 621 622 static void synaptics_pt_activate(struct psmouse *psmouse) 623 { 624 struct synaptics_data *priv = psmouse->private; 625 struct psmouse *child = serio_get_drvdata(priv->pt_port); 626 627 /* adjust the touchpad to child's choice of protocol */ 628 if (child) { 629 if (child->pktsize == 4) 630 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 631 else 632 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 633 634 if (synaptics_mode_cmd(psmouse, priv->mode)) 635 psmouse_warn(psmouse, 636 "failed to switch guest protocol\n"); 637 } 638 } 639 640 static void synaptics_pt_create(struct psmouse *psmouse) 641 { 642 struct serio *serio; 643 644 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 645 if (!serio) { 646 psmouse_err(psmouse, 647 "not enough memory for pass-through port\n"); 648 return; 649 } 650 651 serio->id.type = SERIO_PS_PSTHRU; 652 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 653 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 654 serio->write = synaptics_pt_write; 655 serio->start = synaptics_pt_start; 656 serio->stop = synaptics_pt_stop; 657 serio->parent = psmouse->ps2dev.serio; 658 659 psmouse->pt_activate = synaptics_pt_activate; 660 661 psmouse_info(psmouse, "serio: %s port at %s\n", 662 serio->name, psmouse->phys); 663 serio_register_port(serio); 664 } 665 666 /***************************************************************************** 667 * Functions to interpret the absolute mode packets 668 ****************************************************************************/ 669 670 static void synaptics_parse_agm(const unsigned char buf[], 671 struct synaptics_data *priv, 672 struct synaptics_hw_state *hw) 673 { 674 struct synaptics_hw_state *agm = &priv->agm; 675 int agm_packet_type; 676 677 agm_packet_type = (buf[5] & 0x30) >> 4; 678 switch (agm_packet_type) { 679 case 1: 680 /* Gesture packet: (x, y, z) half resolution */ 681 agm->w = hw->w; 682 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 683 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 684 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 685 break; 686 687 case 2: 688 /* AGM-CONTACT packet: we are only interested in the count */ 689 priv->agm_count = buf[1]; 690 break; 691 692 default: 693 break; 694 } 695 } 696 697 static void synaptics_parse_ext_buttons(const unsigned char buf[], 698 struct synaptics_data *priv, 699 struct synaptics_hw_state *hw) 700 { 701 unsigned int ext_bits = 702 (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 703 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 704 705 hw->ext_buttons = buf[4] & ext_mask; 706 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 707 } 708 709 static int synaptics_parse_hw_state(const unsigned char buf[], 710 struct synaptics_data *priv, 711 struct synaptics_hw_state *hw) 712 { 713 memset(hw, 0, sizeof(struct synaptics_hw_state)); 714 715 if (SYN_MODEL_NEWABS(priv->model_id)) { 716 hw->w = (((buf[0] & 0x30) >> 2) | 717 ((buf[0] & 0x04) >> 1) | 718 ((buf[3] & 0x04) >> 2)); 719 720 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 721 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 722 hw->w == 2) { 723 synaptics_parse_agm(buf, priv, hw); 724 return 1; 725 } 726 727 hw->x = (((buf[3] & 0x10) << 8) | 728 ((buf[1] & 0x0f) << 8) | 729 buf[4]); 730 hw->y = (((buf[3] & 0x20) << 7) | 731 ((buf[1] & 0xf0) << 4) | 732 buf[5]); 733 hw->z = buf[2]; 734 735 hw->left = (buf[0] & 0x01) ? 1 : 0; 736 hw->right = (buf[0] & 0x02) ? 1 : 0; 737 738 if (priv->is_forcepad) { 739 /* 740 * ForcePads, like Clickpads, use middle button 741 * bits to report primary button clicks. 742 * Unfortunately they report primary button not 743 * only when user presses on the pad above certain 744 * threshold, but also when there are more than one 745 * finger on the touchpad, which interferes with 746 * out multi-finger gestures. 747 */ 748 if (hw->z == 0) { 749 /* No contacts */ 750 priv->press = priv->report_press = false; 751 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 752 /* 753 * Single-finger touch with pressure above 754 * the threshold. If pressure stays long 755 * enough, we'll start reporting primary 756 * button. We rely on the device continuing 757 * sending data even if finger does not 758 * move. 759 */ 760 if (!priv->press) { 761 priv->press_start = jiffies; 762 priv->press = true; 763 } else if (time_after(jiffies, 764 priv->press_start + 765 msecs_to_jiffies(50))) { 766 priv->report_press = true; 767 } 768 } else { 769 priv->press = false; 770 } 771 772 hw->left = priv->report_press; 773 774 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 775 /* 776 * Clickpad's button is transmitted as middle button, 777 * however, since it is primary button, we will report 778 * it as BTN_LEFT. 779 */ 780 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 781 782 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 783 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 784 if (hw->w == 2) 785 hw->scroll = (signed char)(buf[1]); 786 } 787 788 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 789 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 790 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 791 } 792 793 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 && 794 ((buf[0] ^ buf[3]) & 0x02)) { 795 synaptics_parse_ext_buttons(buf, priv, hw); 796 } 797 } else { 798 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 799 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 800 801 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 802 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 803 804 hw->left = (buf[0] & 0x01) ? 1 : 0; 805 hw->right = (buf[0] & 0x02) ? 1 : 0; 806 } 807 808 /* 809 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 810 * is used by some firmware to indicate a finger at the edge of 811 * the touchpad whose precise position cannot be determined, so 812 * convert these values to the maximum axis value. 813 */ 814 if (hw->x > X_MAX_POSITIVE) 815 hw->x -= 1 << ABS_POS_BITS; 816 else if (hw->x == X_MAX_POSITIVE) 817 hw->x = XMAX; 818 819 if (hw->y > Y_MAX_POSITIVE) 820 hw->y -= 1 << ABS_POS_BITS; 821 else if (hw->y == Y_MAX_POSITIVE) 822 hw->y = YMAX; 823 824 return 0; 825 } 826 827 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 828 bool active, int x, int y) 829 { 830 input_mt_slot(dev, slot); 831 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 832 if (active) { 833 input_report_abs(dev, ABS_MT_POSITION_X, x); 834 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 835 } 836 } 837 838 static void synaptics_report_semi_mt_data(struct input_dev *dev, 839 const struct synaptics_hw_state *a, 840 const struct synaptics_hw_state *b, 841 int num_fingers) 842 { 843 if (num_fingers >= 2) { 844 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 845 min(a->y, b->y)); 846 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 847 max(a->y, b->y)); 848 } else if (num_fingers == 1) { 849 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 850 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 851 } else { 852 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 853 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 854 } 855 } 856 857 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 858 const struct synaptics_hw_state *hw) 859 { 860 struct input_dev *dev = psmouse->dev; 861 struct synaptics_data *priv = psmouse->private; 862 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 863 char buf[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; 864 int i; 865 866 if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)) 867 return; 868 869 /* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */ 870 if (SYN_ID_FULL(priv->identity) == 0x801 && 871 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 872 return; 873 874 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) { 875 for (i = 0; i < ext_bits; i++) { 876 input_report_key(dev, BTN_0 + 2 * i, 877 hw->ext_buttons & (1 << i)); 878 input_report_key(dev, BTN_1 + 2 * i, 879 hw->ext_buttons & (1 << (i + ext_bits))); 880 } 881 return; 882 } 883 884 /* 885 * This generation of touchpads has the trackstick buttons 886 * physically wired to the touchpad. Re-route them through 887 * the pass-through interface. 888 */ 889 if (!priv->pt_port) 890 return; 891 892 /* The trackstick expects at most 3 buttons */ 893 priv->pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons) | 894 SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 895 SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 896 897 synaptics_pass_pt_packet(psmouse, priv->pt_port, buf); 898 } 899 900 static void synaptics_report_buttons(struct psmouse *psmouse, 901 const struct synaptics_hw_state *hw) 902 { 903 struct input_dev *dev = psmouse->dev; 904 struct synaptics_data *priv = psmouse->private; 905 906 input_report_key(dev, BTN_LEFT, hw->left); 907 input_report_key(dev, BTN_RIGHT, hw->right); 908 909 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 910 input_report_key(dev, BTN_MIDDLE, hw->middle); 911 912 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 913 input_report_key(dev, BTN_FORWARD, hw->up); 914 input_report_key(dev, BTN_BACK, hw->down); 915 } 916 917 synaptics_report_ext_buttons(psmouse, hw); 918 } 919 920 static void synaptics_report_mt_data(struct psmouse *psmouse, 921 const struct synaptics_hw_state *sgm, 922 int num_fingers) 923 { 924 struct input_dev *dev = psmouse->dev; 925 struct synaptics_data *priv = psmouse->private; 926 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 927 struct input_mt_pos pos[2]; 928 int slot[2], nsemi, i; 929 930 nsemi = clamp_val(num_fingers, 0, 2); 931 932 for (i = 0; i < nsemi; i++) { 933 pos[i].x = hw[i]->x; 934 pos[i].y = synaptics_invert_y(hw[i]->y); 935 } 936 937 input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res); 938 939 for (i = 0; i < nsemi; i++) { 940 input_mt_slot(dev, slot[i]); 941 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 942 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 943 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 944 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 945 } 946 947 input_mt_drop_unused(dev); 948 949 /* Don't use active slot count to generate BTN_TOOL events. */ 950 input_mt_report_pointer_emulation(dev, false); 951 952 /* Send the number of fingers reported by touchpad itself. */ 953 input_mt_report_finger_count(dev, num_fingers); 954 955 synaptics_report_buttons(psmouse, sgm); 956 957 input_sync(dev); 958 } 959 960 static void synaptics_image_sensor_process(struct psmouse *psmouse, 961 struct synaptics_hw_state *sgm) 962 { 963 struct synaptics_data *priv = psmouse->private; 964 int num_fingers; 965 966 /* 967 * Update mt_state using the new finger count and current mt_state. 968 */ 969 if (sgm->z == 0) 970 num_fingers = 0; 971 else if (sgm->w >= 4) 972 num_fingers = 1; 973 else if (sgm->w == 0) 974 num_fingers = 2; 975 else if (sgm->w == 1) 976 num_fingers = priv->agm_count ? priv->agm_count : 3; 977 else 978 num_fingers = 4; 979 980 /* Send resulting input events to user space */ 981 synaptics_report_mt_data(psmouse, sgm, num_fingers); 982 } 983 984 /* 985 * called for each full received packet from the touchpad 986 */ 987 static void synaptics_process_packet(struct psmouse *psmouse) 988 { 989 struct input_dev *dev = psmouse->dev; 990 struct synaptics_data *priv = psmouse->private; 991 struct synaptics_hw_state hw; 992 int num_fingers; 993 int finger_width; 994 995 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 996 return; 997 998 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 999 synaptics_image_sensor_process(psmouse, &hw); 1000 return; 1001 } 1002 1003 if (hw.scroll) { 1004 priv->scroll += hw.scroll; 1005 1006 while (priv->scroll >= 4) { 1007 input_report_key(dev, BTN_BACK, !hw.down); 1008 input_sync(dev); 1009 input_report_key(dev, BTN_BACK, hw.down); 1010 input_sync(dev); 1011 priv->scroll -= 4; 1012 } 1013 while (priv->scroll <= -4) { 1014 input_report_key(dev, BTN_FORWARD, !hw.up); 1015 input_sync(dev); 1016 input_report_key(dev, BTN_FORWARD, hw.up); 1017 input_sync(dev); 1018 priv->scroll += 4; 1019 } 1020 return; 1021 } 1022 1023 if (hw.z > 0 && hw.x > 1) { 1024 num_fingers = 1; 1025 finger_width = 5; 1026 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1027 switch (hw.w) { 1028 case 0 ... 1: 1029 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1030 num_fingers = hw.w + 2; 1031 break; 1032 case 2: 1033 if (SYN_MODEL_PEN(priv->model_id)) 1034 ; /* Nothing, treat a pen as a single finger */ 1035 break; 1036 case 4 ... 15: 1037 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1038 finger_width = hw.w; 1039 break; 1040 } 1041 } 1042 } else { 1043 num_fingers = 0; 1044 finger_width = 0; 1045 } 1046 1047 if (cr48_profile_sensor) { 1048 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1049 return; 1050 } 1051 1052 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1053 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1054 num_fingers); 1055 1056 /* Post events 1057 * BTN_TOUCH has to be first as mousedev relies on it when doing 1058 * absolute -> relative conversion 1059 */ 1060 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1061 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1062 1063 if (num_fingers > 0) { 1064 input_report_abs(dev, ABS_X, hw.x); 1065 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1066 } 1067 input_report_abs(dev, ABS_PRESSURE, hw.z); 1068 1069 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1070 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1071 1072 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1073 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1074 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1075 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1076 } 1077 1078 synaptics_report_buttons(psmouse, &hw); 1079 1080 input_sync(dev); 1081 } 1082 1083 static int synaptics_validate_byte(struct psmouse *psmouse, 1084 int idx, unsigned char pkt_type) 1085 { 1086 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1087 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1088 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1089 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1090 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1091 const char *packet = psmouse->packet; 1092 1093 if (idx < 0 || idx > 4) 1094 return 0; 1095 1096 switch (pkt_type) { 1097 1098 case SYN_NEWABS: 1099 case SYN_NEWABS_RELAXED: 1100 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1101 1102 case SYN_NEWABS_STRICT: 1103 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1104 1105 case SYN_OLDABS: 1106 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1107 1108 default: 1109 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1110 return 0; 1111 } 1112 } 1113 1114 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1115 { 1116 int i; 1117 1118 for (i = 0; i < 5; i++) 1119 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1120 psmouse_info(psmouse, "using relaxed packet validation\n"); 1121 return SYN_NEWABS_RELAXED; 1122 } 1123 1124 return SYN_NEWABS_STRICT; 1125 } 1126 1127 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1128 { 1129 struct synaptics_data *priv = psmouse->private; 1130 1131 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1132 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1133 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1134 1135 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1136 synaptics_is_pt_packet(psmouse->packet)) { 1137 if (priv->pt_port) 1138 synaptics_pass_pt_packet(psmouse, priv->pt_port, 1139 psmouse->packet); 1140 } else 1141 synaptics_process_packet(psmouse); 1142 1143 return PSMOUSE_FULL_PACKET; 1144 } 1145 1146 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1147 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1148 } 1149 1150 /***************************************************************************** 1151 * Driver initialization/cleanup functions 1152 ****************************************************************************/ 1153 static void set_abs_position_params(struct input_dev *dev, 1154 struct synaptics_data *priv, int x_code, 1155 int y_code) 1156 { 1157 int x_min = priv->x_min ?: XMIN_NOMINAL; 1158 int x_max = priv->x_max ?: XMAX_NOMINAL; 1159 int y_min = priv->y_min ?: YMIN_NOMINAL; 1160 int y_max = priv->y_max ?: YMAX_NOMINAL; 1161 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1162 SYN_REDUCED_FILTER_FUZZ : 0; 1163 1164 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1165 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1166 input_abs_set_res(dev, x_code, priv->x_res); 1167 input_abs_set_res(dev, y_code, priv->y_res); 1168 } 1169 1170 static void set_input_params(struct psmouse *psmouse, 1171 struct synaptics_data *priv) 1172 { 1173 struct input_dev *dev = psmouse->dev; 1174 int i; 1175 1176 /* Things that apply to both modes */ 1177 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1178 __set_bit(EV_KEY, dev->evbit); 1179 __set_bit(BTN_LEFT, dev->keybit); 1180 __set_bit(BTN_RIGHT, dev->keybit); 1181 1182 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1183 __set_bit(BTN_MIDDLE, dev->keybit); 1184 1185 if (!priv->absolute_mode) { 1186 /* Relative mode */ 1187 __set_bit(EV_REL, dev->evbit); 1188 __set_bit(REL_X, dev->relbit); 1189 __set_bit(REL_Y, dev->relbit); 1190 return; 1191 } 1192 1193 /* Absolute mode */ 1194 __set_bit(EV_ABS, dev->evbit); 1195 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1196 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1197 1198 if (cr48_profile_sensor) 1199 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1200 1201 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1202 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1203 ABS_MT_POSITION_Y); 1204 /* Image sensors can report per-contact pressure */ 1205 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1206 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1207 1208 /* Image sensors can signal 4 and 5 finger clicks */ 1209 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1210 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1211 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1212 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1213 ABS_MT_POSITION_Y); 1214 /* 1215 * Profile sensor in CR-48 tracks contacts reasonably well, 1216 * other non-image sensors with AGM use semi-mt. 1217 */ 1218 input_mt_init_slots(dev, 2, 1219 INPUT_MT_POINTER | 1220 (cr48_profile_sensor ? 1221 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1222 } 1223 1224 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1225 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1226 1227 __set_bit(BTN_TOUCH, dev->keybit); 1228 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1229 1230 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1231 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1232 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1233 } 1234 1235 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1236 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1237 __set_bit(BTN_FORWARD, dev->keybit); 1238 __set_bit(BTN_BACK, dev->keybit); 1239 } 1240 1241 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1242 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1243 __set_bit(BTN_0 + i, dev->keybit); 1244 1245 __clear_bit(EV_REL, dev->evbit); 1246 __clear_bit(REL_X, dev->relbit); 1247 __clear_bit(REL_Y, dev->relbit); 1248 1249 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1250 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1251 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1252 !SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1253 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1254 /* Clickpads report only left button */ 1255 __clear_bit(BTN_RIGHT, dev->keybit); 1256 __clear_bit(BTN_MIDDLE, dev->keybit); 1257 } 1258 } 1259 1260 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1261 void *data, char *buf) 1262 { 1263 struct synaptics_data *priv = psmouse->private; 1264 1265 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1266 } 1267 1268 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1269 void *data, const char *buf, 1270 size_t len) 1271 { 1272 struct synaptics_data *priv = psmouse->private; 1273 unsigned int value; 1274 int err; 1275 1276 err = kstrtouint(buf, 10, &value); 1277 if (err) 1278 return err; 1279 1280 if (value > 1) 1281 return -EINVAL; 1282 1283 if (value == priv->disable_gesture) 1284 return len; 1285 1286 priv->disable_gesture = value; 1287 if (value) 1288 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1289 else 1290 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1291 1292 if (synaptics_mode_cmd(psmouse, priv->mode)) 1293 return -EIO; 1294 1295 return len; 1296 } 1297 1298 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1299 synaptics_show_disable_gesture, 1300 synaptics_set_disable_gesture); 1301 1302 static void synaptics_disconnect(struct psmouse *psmouse) 1303 { 1304 struct synaptics_data *priv = psmouse->private; 1305 1306 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1307 device_remove_file(&psmouse->ps2dev.serio->dev, 1308 &psmouse_attr_disable_gesture.dattr); 1309 1310 synaptics_reset(psmouse); 1311 kfree(priv); 1312 psmouse->private = NULL; 1313 } 1314 1315 static int synaptics_reconnect(struct psmouse *psmouse) 1316 { 1317 struct synaptics_data *priv = psmouse->private; 1318 struct synaptics_data old_priv = *priv; 1319 unsigned char param[2]; 1320 int retry = 0; 1321 int error; 1322 1323 do { 1324 psmouse_reset(psmouse); 1325 if (retry) { 1326 /* 1327 * On some boxes, right after resuming, the touchpad 1328 * needs some time to finish initializing (I assume 1329 * it needs time to calibrate) and start responding 1330 * to Synaptics-specific queries, so let's wait a 1331 * bit. 1332 */ 1333 ssleep(1); 1334 } 1335 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1336 error = synaptics_detect(psmouse, 0); 1337 } while (error && ++retry < 3); 1338 1339 if (error) 1340 return -1; 1341 1342 if (retry > 1) 1343 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1344 1345 if (synaptics_query_hardware(psmouse)) { 1346 psmouse_err(psmouse, "Unable to query device.\n"); 1347 return -1; 1348 } 1349 1350 if (synaptics_set_mode(psmouse)) { 1351 psmouse_err(psmouse, "Unable to initialize device.\n"); 1352 return -1; 1353 } 1354 1355 if (old_priv.identity != priv->identity || 1356 old_priv.model_id != priv->model_id || 1357 old_priv.capabilities != priv->capabilities || 1358 old_priv.ext_cap != priv->ext_cap) { 1359 psmouse_err(psmouse, 1360 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1361 old_priv.identity, priv->identity, 1362 old_priv.model_id, priv->model_id, 1363 old_priv.capabilities, priv->capabilities, 1364 old_priv.ext_cap, priv->ext_cap); 1365 return -1; 1366 } 1367 1368 return 0; 1369 } 1370 1371 static bool impaired_toshiba_kbc; 1372 1373 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1374 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1375 { 1376 /* Toshiba Satellite */ 1377 .matches = { 1378 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1379 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1380 }, 1381 }, 1382 { 1383 /* Toshiba Dynabook */ 1384 .matches = { 1385 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1386 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1387 }, 1388 }, 1389 { 1390 /* Toshiba Portege M300 */ 1391 .matches = { 1392 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1393 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1394 }, 1395 1396 }, 1397 { 1398 /* Toshiba Portege M300 */ 1399 .matches = { 1400 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1401 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1402 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1403 }, 1404 1405 }, 1406 #endif 1407 { } 1408 }; 1409 1410 static bool broken_olpc_ec; 1411 1412 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1413 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1414 { 1415 /* OLPC XO-1 or XO-1.5 */ 1416 .matches = { 1417 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1418 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1419 }, 1420 }, 1421 #endif 1422 { } 1423 }; 1424 1425 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1426 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1427 { 1428 /* Cr-48 Chromebook (Codename Mario) */ 1429 .matches = { 1430 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1431 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1432 }, 1433 }, 1434 #endif 1435 { } 1436 }; 1437 1438 void __init synaptics_module_init(void) 1439 { 1440 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1441 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1442 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1443 } 1444 1445 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1446 { 1447 struct synaptics_data *priv; 1448 int err = -1; 1449 1450 /* 1451 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1452 * packet spew overloads the EC such that key presses on the keyboard 1453 * are missed. Given that, don't even attempt to use Absolute mode. 1454 * Relative mode seems to work just fine. 1455 */ 1456 if (absolute_mode && broken_olpc_ec) { 1457 psmouse_info(psmouse, 1458 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1459 return -ENODEV; 1460 } 1461 1462 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1463 if (!priv) 1464 return -ENOMEM; 1465 1466 psmouse_reset(psmouse); 1467 1468 if (synaptics_query_hardware(psmouse)) { 1469 psmouse_err(psmouse, "Unable to query device.\n"); 1470 goto init_fail; 1471 } 1472 1473 priv->absolute_mode = absolute_mode; 1474 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1475 priv->disable_gesture = true; 1476 1477 /* 1478 * Unfortunately ForcePad capability is not exported over PS/2, 1479 * so we have to resort to checking PNP IDs. 1480 */ 1481 priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); 1482 1483 if (synaptics_set_mode(psmouse)) { 1484 psmouse_err(psmouse, "Unable to initialize device.\n"); 1485 goto init_fail; 1486 } 1487 1488 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1489 1490 psmouse_info(psmouse, 1491 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1492 SYN_ID_MODEL(priv->identity), 1493 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1494 priv->model_id, 1495 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1496 priv->ext_cap_10, priv->board_id, priv->firmware_id); 1497 1498 set_input_params(psmouse, priv); 1499 1500 /* 1501 * Encode touchpad model so that it can be used to set 1502 * input device->id.version and be visible to userspace. 1503 * Because version is __u16 we have to drop something. 1504 * Hardware info bits seem to be good candidates as they 1505 * are documented to be for Synaptics corp. internal use. 1506 */ 1507 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1508 (priv->model_id & 0x000000ff); 1509 1510 if (absolute_mode) { 1511 psmouse->protocol_handler = synaptics_process_byte; 1512 psmouse->pktsize = 6; 1513 } else { 1514 /* Relative mode follows standard PS/2 mouse protocol */ 1515 psmouse->protocol_handler = psmouse_process_byte; 1516 psmouse->pktsize = 3; 1517 } 1518 1519 psmouse->set_rate = synaptics_set_rate; 1520 psmouse->disconnect = synaptics_disconnect; 1521 psmouse->reconnect = synaptics_reconnect; 1522 psmouse->cleanup = synaptics_reset; 1523 /* Synaptics can usually stay in sync without extra help */ 1524 psmouse->resync_time = 0; 1525 1526 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1527 synaptics_pt_create(psmouse); 1528 1529 /* 1530 * Toshiba's KBC seems to have trouble handling data from 1531 * Synaptics at full rate. Switch to a lower rate (roughly 1532 * the same rate as a standard PS/2 mouse). 1533 */ 1534 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1535 psmouse_info(psmouse, 1536 "Toshiba %s detected, limiting rate to 40pps.\n", 1537 dmi_get_system_info(DMI_PRODUCT_NAME)); 1538 psmouse->rate = 40; 1539 } 1540 1541 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1542 err = device_create_file(&psmouse->ps2dev.serio->dev, 1543 &psmouse_attr_disable_gesture.dattr); 1544 if (err) { 1545 psmouse_err(psmouse, 1546 "Failed to create disable_gesture attribute (%d)", 1547 err); 1548 goto init_fail; 1549 } 1550 } 1551 1552 return 0; 1553 1554 init_fail: 1555 kfree(priv); 1556 return err; 1557 } 1558 1559 int synaptics_init(struct psmouse *psmouse) 1560 { 1561 return __synaptics_init(psmouse, true); 1562 } 1563 1564 int synaptics_init_relative(struct psmouse *psmouse) 1565 { 1566 return __synaptics_init(psmouse, false); 1567 } 1568 1569 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1570 1571 void __init synaptics_module_init(void) 1572 { 1573 } 1574 1575 int synaptics_init(struct psmouse *psmouse) 1576 { 1577 return -ENOSYS; 1578 } 1579 1580 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1581