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 /***************************************************************************** 71 * Stuff we need even when we do not want native Synaptics support 72 ****************************************************************************/ 73 74 /* 75 * Set the synaptics touchpad mode byte by special commands 76 */ 77 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 78 { 79 unsigned char param[1]; 80 81 if (psmouse_sliced_command(psmouse, mode)) 82 return -1; 83 param[0] = SYN_PS_SET_MODE2; 84 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 85 return -1; 86 return 0; 87 } 88 89 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 90 { 91 struct ps2dev *ps2dev = &psmouse->ps2dev; 92 unsigned char param[4]; 93 94 param[0] = 0; 95 96 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 97 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 98 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 100 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 101 102 if (param[1] != 0x47) 103 return -ENODEV; 104 105 if (set_properties) { 106 psmouse->vendor = "Synaptics"; 107 psmouse->name = "TouchPad"; 108 } 109 110 return 0; 111 } 112 113 void synaptics_reset(struct psmouse *psmouse) 114 { 115 /* reset touchpad back to relative mode, gestures enabled */ 116 synaptics_mode_cmd(psmouse, 0); 117 } 118 119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 120 121 static bool cr48_profile_sensor; 122 123 #define ANY_BOARD_ID 0 124 struct min_max_quirk { 125 const char * const *pnp_ids; 126 struct { 127 unsigned long int min, max; 128 } board_id; 129 int x_min, x_max, y_min, y_max; 130 }; 131 132 static const struct min_max_quirk min_max_pnpid_table[] = { 133 { 134 (const char * const []){"LEN0033", NULL}, 135 {ANY_BOARD_ID, ANY_BOARD_ID}, 136 1024, 5052, 2258, 4832 137 }, 138 { 139 (const char * const []){"LEN0042", NULL}, 140 {ANY_BOARD_ID, ANY_BOARD_ID}, 141 1232, 5710, 1156, 4696 142 }, 143 { 144 (const char * const []){"LEN0034", "LEN0036", "LEN0037", 145 "LEN0039", "LEN2002", "LEN2004", 146 NULL}, 147 {ANY_BOARD_ID, 2961}, 148 1024, 5112, 2024, 4832 149 }, 150 { 151 (const char * const []){"LEN2001", NULL}, 152 {ANY_BOARD_ID, ANY_BOARD_ID}, 153 1024, 5022, 2508, 4832 154 }, 155 { 156 (const char * const []){"LEN2006", NULL}, 157 {2691, 2691}, 158 1024, 5045, 2457, 4832 159 }, 160 { 161 (const char * const []){"LEN2006", NULL}, 162 {ANY_BOARD_ID, ANY_BOARD_ID}, 163 1264, 5675, 1171, 4688 164 }, 165 { } 166 }; 167 168 /* This list has been kindly provided by Synaptics. */ 169 static const char * const topbuttonpad_pnp_ids[] = { 170 "LEN0017", 171 "LEN0018", 172 "LEN0019", 173 "LEN0023", 174 "LEN002A", 175 "LEN002B", 176 "LEN002C", 177 "LEN002D", 178 "LEN002E", 179 "LEN0033", /* Helix */ 180 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 181 "LEN0035", /* X240 */ 182 "LEN0036", /* T440 */ 183 "LEN0037", /* X1 Carbon 2nd */ 184 "LEN0038", 185 "LEN0039", /* T440s */ 186 "LEN0041", 187 "LEN0042", /* Yoga */ 188 "LEN0045", 189 "LEN0047", 190 "LEN0049", 191 "LEN2000", 192 "LEN2001", /* Edge E431 */ 193 "LEN2002", /* Edge E531 */ 194 "LEN2003", 195 "LEN2004", /* L440 */ 196 "LEN2005", 197 "LEN2006", /* Edge E440/E540 */ 198 "LEN2007", 199 "LEN2008", 200 "LEN2009", 201 "LEN200A", 202 "LEN200B", 203 NULL 204 }; 205 206 /***************************************************************************** 207 * Synaptics communications functions 208 ****************************************************************************/ 209 210 /* 211 * Synaptics touchpads report the y coordinate from bottom to top, which is 212 * opposite from what userspace expects. 213 * This function is used to invert y before reporting. 214 */ 215 static int synaptics_invert_y(int y) 216 { 217 return YMAX_NOMINAL + YMIN_NOMINAL - y; 218 } 219 220 /* 221 * Send a command to the synpatics touchpad by special commands 222 */ 223 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 224 { 225 if (psmouse_sliced_command(psmouse, c)) 226 return -1; 227 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 228 return -1; 229 return 0; 230 } 231 232 /* 233 * Read the model-id bytes from the touchpad 234 * see also SYN_MODEL_* macros 235 */ 236 static int synaptics_model_id(struct psmouse *psmouse) 237 { 238 struct synaptics_data *priv = psmouse->private; 239 unsigned char mi[3]; 240 241 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 242 return -1; 243 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 244 return 0; 245 } 246 247 static int synaptics_more_extended_queries(struct psmouse *psmouse) 248 { 249 struct synaptics_data *priv = psmouse->private; 250 unsigned char buf[3]; 251 252 if (synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf)) 253 return -1; 254 255 priv->ext_cap_10 = (buf[0]<<16) | (buf[1]<<8) | buf[2]; 256 257 return 0; 258 } 259 260 /* 261 * Read the board id and the "More Extended Queries" from the touchpad 262 * The board id is encoded in the "QUERY MODES" response 263 */ 264 static int synaptics_query_modes(struct psmouse *psmouse) 265 { 266 struct synaptics_data *priv = psmouse->private; 267 unsigned char bid[3]; 268 269 /* firmwares prior 7.5 have no board_id encoded */ 270 if (SYN_ID_FULL(priv->identity) < 0x705) 271 return 0; 272 273 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 274 return -1; 275 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 276 277 if (SYN_MEXT_CAP_BIT(bid[0])) 278 return synaptics_more_extended_queries(psmouse); 279 280 return 0; 281 } 282 283 /* 284 * Read the firmware id from the touchpad 285 */ 286 static int synaptics_firmware_id(struct psmouse *psmouse) 287 { 288 struct synaptics_data *priv = psmouse->private; 289 unsigned char fwid[3]; 290 291 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 292 return -1; 293 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 294 return 0; 295 } 296 297 /* 298 * Read the capability-bits from the touchpad 299 * see also the SYN_CAP_* macros 300 */ 301 static int synaptics_capability(struct psmouse *psmouse) 302 { 303 struct synaptics_data *priv = psmouse->private; 304 unsigned char cap[3]; 305 306 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 307 return -1; 308 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 309 priv->ext_cap = priv->ext_cap_0c = 0; 310 311 /* 312 * Older firmwares had submodel ID fixed to 0x47 313 */ 314 if (SYN_ID_FULL(priv->identity) < 0x705 && 315 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 316 return -1; 317 } 318 319 /* 320 * Unless capExtended is set the rest of the flags should be ignored 321 */ 322 if (!SYN_CAP_EXTENDED(priv->capabilities)) 323 priv->capabilities = 0; 324 325 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 326 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 327 psmouse_warn(psmouse, 328 "device claims to have extended capabilities, but I'm not able to read them.\n"); 329 } else { 330 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 331 332 /* 333 * if nExtBtn is greater than 8 it should be considered 334 * invalid and treated as 0 335 */ 336 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 337 priv->ext_cap &= 0xff0fff; 338 } 339 } 340 341 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 342 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 343 psmouse_warn(psmouse, 344 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 345 } else { 346 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 347 } 348 } 349 350 return 0; 351 } 352 353 /* 354 * Identify Touchpad 355 * See also the SYN_ID_* macros 356 */ 357 static int synaptics_identify(struct psmouse *psmouse) 358 { 359 struct synaptics_data *priv = psmouse->private; 360 unsigned char id[3]; 361 362 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 363 return -1; 364 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 365 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 366 return 0; 367 return -1; 368 } 369 370 /* 371 * Read touchpad resolution and maximum reported coordinates 372 * Resolution is left zero if touchpad does not support the query 373 */ 374 375 static int synaptics_resolution(struct psmouse *psmouse) 376 { 377 struct synaptics_data *priv = psmouse->private; 378 unsigned char resp[3]; 379 380 if (SYN_ID_MAJOR(priv->identity) < 4) 381 return 0; 382 383 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 384 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 385 priv->x_res = resp[0]; /* x resolution in units/mm */ 386 priv->y_res = resp[2]; /* y resolution in units/mm */ 387 } 388 } 389 390 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 391 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 392 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 393 psmouse_warn(psmouse, 394 "device claims to have max coordinates query, but I'm not able to read it.\n"); 395 } else { 396 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 397 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 398 psmouse_info(psmouse, 399 "queried max coordinates: x [..%d], y [..%d]\n", 400 priv->x_max, priv->y_max); 401 } 402 } 403 404 if (SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c) && 405 (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 || 406 /* 407 * Firmware v8.1 does not report proper number of extended 408 * capabilities, but has been proven to report correct min 409 * coordinates. 410 */ 411 SYN_ID_FULL(priv->identity) == 0x801)) { 412 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 413 psmouse_warn(psmouse, 414 "device claims to have min coordinates query, but I'm not able to read it.\n"); 415 } else { 416 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 417 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 418 psmouse_info(psmouse, 419 "queried min coordinates: x [%d..], y [%d..]\n", 420 priv->x_min, priv->y_min); 421 } 422 } 423 424 return 0; 425 } 426 427 /* 428 * Apply quirk(s) if the hardware matches 429 */ 430 431 static void synaptics_apply_quirks(struct psmouse *psmouse) 432 { 433 struct synaptics_data *priv = psmouse->private; 434 int i; 435 436 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 437 if (!psmouse_matches_pnp_id(psmouse, 438 min_max_pnpid_table[i].pnp_ids)) 439 continue; 440 441 if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && 442 priv->board_id < min_max_pnpid_table[i].board_id.min) 443 continue; 444 445 if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && 446 priv->board_id > min_max_pnpid_table[i].board_id.max) 447 continue; 448 449 priv->x_min = min_max_pnpid_table[i].x_min; 450 priv->x_max = min_max_pnpid_table[i].x_max; 451 priv->y_min = min_max_pnpid_table[i].y_min; 452 priv->y_max = min_max_pnpid_table[i].y_max; 453 psmouse_info(psmouse, 454 "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", 455 priv->x_min, priv->x_max, 456 priv->y_min, priv->y_max); 457 break; 458 } 459 } 460 461 static int synaptics_query_hardware(struct psmouse *psmouse) 462 { 463 if (synaptics_identify(psmouse)) 464 return -1; 465 if (synaptics_model_id(psmouse)) 466 return -1; 467 if (synaptics_firmware_id(psmouse)) 468 return -1; 469 if (synaptics_query_modes(psmouse)) 470 return -1; 471 if (synaptics_capability(psmouse)) 472 return -1; 473 if (synaptics_resolution(psmouse)) 474 return -1; 475 476 synaptics_apply_quirks(psmouse); 477 478 return 0; 479 } 480 481 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 482 { 483 static unsigned char param = 0xc8; 484 struct synaptics_data *priv = psmouse->private; 485 486 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 487 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 488 return 0; 489 490 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 491 return -1; 492 493 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 494 return -1; 495 496 /* Advanced gesture mode also sends multi finger data */ 497 priv->capabilities |= BIT(1); 498 499 return 0; 500 } 501 502 static int synaptics_set_mode(struct psmouse *psmouse) 503 { 504 struct synaptics_data *priv = psmouse->private; 505 506 priv->mode = 0; 507 if (priv->absolute_mode) 508 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 509 if (priv->disable_gesture) 510 priv->mode |= SYN_BIT_DISABLE_GESTURE; 511 if (psmouse->rate >= 80) 512 priv->mode |= SYN_BIT_HIGH_RATE; 513 if (SYN_CAP_EXTENDED(priv->capabilities)) 514 priv->mode |= SYN_BIT_W_MODE; 515 516 if (synaptics_mode_cmd(psmouse, priv->mode)) 517 return -1; 518 519 if (priv->absolute_mode && 520 synaptics_set_advanced_gesture_mode(psmouse)) { 521 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 522 return -1; 523 } 524 525 return 0; 526 } 527 528 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 529 { 530 struct synaptics_data *priv = psmouse->private; 531 532 if (rate >= 80) { 533 priv->mode |= SYN_BIT_HIGH_RATE; 534 psmouse->rate = 80; 535 } else { 536 priv->mode &= ~SYN_BIT_HIGH_RATE; 537 psmouse->rate = 40; 538 } 539 540 synaptics_mode_cmd(psmouse, priv->mode); 541 } 542 543 /***************************************************************************** 544 * Synaptics pass-through PS/2 port support 545 ****************************************************************************/ 546 static int synaptics_pt_write(struct serio *serio, unsigned char c) 547 { 548 struct psmouse *parent = serio_get_drvdata(serio->parent); 549 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 550 551 if (psmouse_sliced_command(parent, c)) 552 return -1; 553 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 554 return -1; 555 return 0; 556 } 557 558 static int synaptics_pt_start(struct serio *serio) 559 { 560 struct psmouse *parent = serio_get_drvdata(serio->parent); 561 struct synaptics_data *priv = parent->private; 562 563 serio_pause_rx(parent->ps2dev.serio); 564 priv->pt_port = serio; 565 serio_continue_rx(parent->ps2dev.serio); 566 567 return 0; 568 } 569 570 static void synaptics_pt_stop(struct serio *serio) 571 { 572 struct psmouse *parent = serio_get_drvdata(serio->parent); 573 struct synaptics_data *priv = parent->private; 574 575 serio_pause_rx(parent->ps2dev.serio); 576 priv->pt_port = NULL; 577 serio_continue_rx(parent->ps2dev.serio); 578 } 579 580 static int synaptics_is_pt_packet(unsigned char *buf) 581 { 582 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 583 } 584 585 static void synaptics_pass_pt_packet(struct psmouse *psmouse, 586 struct serio *ptport, 587 unsigned char *packet) 588 { 589 struct synaptics_data *priv = psmouse->private; 590 struct psmouse *child = serio_get_drvdata(ptport); 591 592 if (child && child->state == PSMOUSE_ACTIVATED) { 593 serio_interrupt(ptport, packet[1] | priv->pt_buttons, 0); 594 serio_interrupt(ptport, packet[4], 0); 595 serio_interrupt(ptport, packet[5], 0); 596 if (child->pktsize == 4) 597 serio_interrupt(ptport, packet[2], 0); 598 } else { 599 serio_interrupt(ptport, packet[1], 0); 600 } 601 } 602 603 static void synaptics_pt_activate(struct psmouse *psmouse) 604 { 605 struct synaptics_data *priv = psmouse->private; 606 struct psmouse *child = serio_get_drvdata(priv->pt_port); 607 608 /* adjust the touchpad to child's choice of protocol */ 609 if (child) { 610 if (child->pktsize == 4) 611 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 612 else 613 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 614 615 if (synaptics_mode_cmd(psmouse, priv->mode)) 616 psmouse_warn(psmouse, 617 "failed to switch guest protocol\n"); 618 } 619 } 620 621 static void synaptics_pt_create(struct psmouse *psmouse) 622 { 623 struct serio *serio; 624 625 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 626 if (!serio) { 627 psmouse_err(psmouse, 628 "not enough memory for pass-through port\n"); 629 return; 630 } 631 632 serio->id.type = SERIO_PS_PSTHRU; 633 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 634 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 635 serio->write = synaptics_pt_write; 636 serio->start = synaptics_pt_start; 637 serio->stop = synaptics_pt_stop; 638 serio->parent = psmouse->ps2dev.serio; 639 640 psmouse->pt_activate = synaptics_pt_activate; 641 642 psmouse_info(psmouse, "serio: %s port at %s\n", 643 serio->name, psmouse->phys); 644 serio_register_port(serio); 645 } 646 647 /***************************************************************************** 648 * Functions to interpret the absolute mode packets 649 ****************************************************************************/ 650 651 static void synaptics_parse_agm(const unsigned char buf[], 652 struct synaptics_data *priv, 653 struct synaptics_hw_state *hw) 654 { 655 struct synaptics_hw_state *agm = &priv->agm; 656 int agm_packet_type; 657 658 agm_packet_type = (buf[5] & 0x30) >> 4; 659 switch (agm_packet_type) { 660 case 1: 661 /* Gesture packet: (x, y, z) half resolution */ 662 agm->w = hw->w; 663 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 664 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 665 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 666 break; 667 668 case 2: 669 /* AGM-CONTACT packet: we are only interested in the count */ 670 priv->agm_count = buf[1]; 671 break; 672 673 default: 674 break; 675 } 676 } 677 678 static void synaptics_parse_ext_buttons(const unsigned char buf[], 679 struct synaptics_data *priv, 680 struct synaptics_hw_state *hw) 681 { 682 unsigned int ext_bits = 683 (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 684 unsigned int ext_mask = GENMASK(ext_bits - 1, 0); 685 686 hw->ext_buttons = buf[4] & ext_mask; 687 hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; 688 } 689 690 static bool is_forcepad; 691 692 static int synaptics_parse_hw_state(const unsigned char buf[], 693 struct synaptics_data *priv, 694 struct synaptics_hw_state *hw) 695 { 696 memset(hw, 0, sizeof(struct synaptics_hw_state)); 697 698 if (SYN_MODEL_NEWABS(priv->model_id)) { 699 hw->w = (((buf[0] & 0x30) >> 2) | 700 ((buf[0] & 0x04) >> 1) | 701 ((buf[3] & 0x04) >> 2)); 702 703 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 704 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 705 hw->w == 2) { 706 synaptics_parse_agm(buf, priv, hw); 707 return 1; 708 } 709 710 hw->x = (((buf[3] & 0x10) << 8) | 711 ((buf[1] & 0x0f) << 8) | 712 buf[4]); 713 hw->y = (((buf[3] & 0x20) << 7) | 714 ((buf[1] & 0xf0) << 4) | 715 buf[5]); 716 hw->z = buf[2]; 717 718 hw->left = (buf[0] & 0x01) ? 1 : 0; 719 hw->right = (buf[0] & 0x02) ? 1 : 0; 720 721 if (is_forcepad) { 722 /* 723 * ForcePads, like Clickpads, use middle button 724 * bits to report primary button clicks. 725 * Unfortunately they report primary button not 726 * only when user presses on the pad above certain 727 * threshold, but also when there are more than one 728 * finger on the touchpad, which interferes with 729 * out multi-finger gestures. 730 */ 731 if (hw->z == 0) { 732 /* No contacts */ 733 priv->press = priv->report_press = false; 734 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 735 /* 736 * Single-finger touch with pressure above 737 * the threshold. If pressure stays long 738 * enough, we'll start reporting primary 739 * button. We rely on the device continuing 740 * sending data even if finger does not 741 * move. 742 */ 743 if (!priv->press) { 744 priv->press_start = jiffies; 745 priv->press = true; 746 } else if (time_after(jiffies, 747 priv->press_start + 748 msecs_to_jiffies(50))) { 749 priv->report_press = true; 750 } 751 } else { 752 priv->press = false; 753 } 754 755 hw->left = priv->report_press; 756 757 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 758 /* 759 * Clickpad's button is transmitted as middle button, 760 * however, since it is primary button, we will report 761 * it as BTN_LEFT. 762 */ 763 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 764 765 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 766 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 767 if (hw->w == 2) 768 hw->scroll = (signed char)(buf[1]); 769 } 770 771 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 772 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 773 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 774 } 775 776 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 0 && 777 ((buf[0] ^ buf[3]) & 0x02)) { 778 synaptics_parse_ext_buttons(buf, priv, hw); 779 } 780 } else { 781 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 782 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 783 784 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 785 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 786 787 hw->left = (buf[0] & 0x01) ? 1 : 0; 788 hw->right = (buf[0] & 0x02) ? 1 : 0; 789 } 790 791 /* 792 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 793 * is used by some firmware to indicate a finger at the edge of 794 * the touchpad whose precise position cannot be determined, so 795 * convert these values to the maximum axis value. 796 */ 797 if (hw->x > X_MAX_POSITIVE) 798 hw->x -= 1 << ABS_POS_BITS; 799 else if (hw->x == X_MAX_POSITIVE) 800 hw->x = XMAX; 801 802 if (hw->y > Y_MAX_POSITIVE) 803 hw->y -= 1 << ABS_POS_BITS; 804 else if (hw->y == Y_MAX_POSITIVE) 805 hw->y = YMAX; 806 807 return 0; 808 } 809 810 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 811 bool active, int x, int y) 812 { 813 input_mt_slot(dev, slot); 814 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 815 if (active) { 816 input_report_abs(dev, ABS_MT_POSITION_X, x); 817 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 818 } 819 } 820 821 static void synaptics_report_semi_mt_data(struct input_dev *dev, 822 const struct synaptics_hw_state *a, 823 const struct synaptics_hw_state *b, 824 int num_fingers) 825 { 826 if (num_fingers >= 2) { 827 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 828 min(a->y, b->y)); 829 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 830 max(a->y, b->y)); 831 } else if (num_fingers == 1) { 832 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 833 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 834 } else { 835 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 836 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 837 } 838 } 839 840 static void synaptics_report_ext_buttons(struct psmouse *psmouse, 841 const struct synaptics_hw_state *hw) 842 { 843 struct input_dev *dev = psmouse->dev; 844 struct synaptics_data *priv = psmouse->private; 845 int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) + 1) >> 1; 846 char buf[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; 847 int i; 848 849 if (!SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)) 850 return; 851 852 /* Bug in FW 8.1, buttons are reported only when ExtBit is 1 */ 853 if (SYN_ID_FULL(priv->identity) == 0x801 && 854 !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) 855 return; 856 857 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) { 858 for (i = 0; i < ext_bits; i++) { 859 input_report_key(dev, BTN_0 + 2 * i, 860 hw->ext_buttons & (1 << i)); 861 input_report_key(dev, BTN_1 + 2 * i, 862 hw->ext_buttons & (1 << (i + ext_bits))); 863 } 864 return; 865 } 866 867 /* 868 * This generation of touchpads has the trackstick buttons 869 * physically wired to the touchpad. Re-route them through 870 * the pass-through interface. 871 */ 872 if (!priv->pt_port) 873 return; 874 875 /* The trackstick expects at most 3 buttons */ 876 priv->pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons) | 877 SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | 878 SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; 879 880 synaptics_pass_pt_packet(psmouse, priv->pt_port, buf); 881 } 882 883 static void synaptics_report_buttons(struct psmouse *psmouse, 884 const struct synaptics_hw_state *hw) 885 { 886 struct input_dev *dev = psmouse->dev; 887 struct synaptics_data *priv = psmouse->private; 888 889 input_report_key(dev, BTN_LEFT, hw->left); 890 input_report_key(dev, BTN_RIGHT, hw->right); 891 892 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 893 input_report_key(dev, BTN_MIDDLE, hw->middle); 894 895 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 896 input_report_key(dev, BTN_FORWARD, hw->up); 897 input_report_key(dev, BTN_BACK, hw->down); 898 } 899 900 synaptics_report_ext_buttons(psmouse, hw); 901 } 902 903 static void synaptics_report_mt_data(struct psmouse *psmouse, 904 const struct synaptics_hw_state *sgm, 905 int num_fingers) 906 { 907 struct input_dev *dev = psmouse->dev; 908 struct synaptics_data *priv = psmouse->private; 909 const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 910 struct input_mt_pos pos[2]; 911 int slot[2], nsemi, i; 912 913 nsemi = clamp_val(num_fingers, 0, 2); 914 915 for (i = 0; i < nsemi; i++) { 916 pos[i].x = hw[i]->x; 917 pos[i].y = synaptics_invert_y(hw[i]->y); 918 } 919 920 input_mt_assign_slots(dev, slot, pos, nsemi, 0); 921 922 for (i = 0; i < nsemi; i++) { 923 input_mt_slot(dev, slot[i]); 924 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 925 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 926 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 927 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 928 } 929 930 input_mt_drop_unused(dev); 931 932 /* Don't use active slot count to generate BTN_TOOL events. */ 933 input_mt_report_pointer_emulation(dev, false); 934 935 /* Send the number of fingers reported by touchpad itself. */ 936 input_mt_report_finger_count(dev, num_fingers); 937 938 synaptics_report_buttons(psmouse, sgm); 939 940 input_sync(dev); 941 } 942 943 static void synaptics_image_sensor_process(struct psmouse *psmouse, 944 struct synaptics_hw_state *sgm) 945 { 946 struct synaptics_data *priv = psmouse->private; 947 int num_fingers; 948 949 /* 950 * Update mt_state using the new finger count and current mt_state. 951 */ 952 if (sgm->z == 0) 953 num_fingers = 0; 954 else if (sgm->w >= 4) 955 num_fingers = 1; 956 else if (sgm->w == 0) 957 num_fingers = 2; 958 else if (sgm->w == 1) 959 num_fingers = priv->agm_count ? priv->agm_count : 3; 960 else 961 num_fingers = 4; 962 963 /* Send resulting input events to user space */ 964 synaptics_report_mt_data(psmouse, sgm, num_fingers); 965 } 966 967 /* 968 * called for each full received packet from the touchpad 969 */ 970 static void synaptics_process_packet(struct psmouse *psmouse) 971 { 972 struct input_dev *dev = psmouse->dev; 973 struct synaptics_data *priv = psmouse->private; 974 struct synaptics_hw_state hw; 975 int num_fingers; 976 int finger_width; 977 978 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 979 return; 980 981 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 982 synaptics_image_sensor_process(psmouse, &hw); 983 return; 984 } 985 986 if (hw.scroll) { 987 priv->scroll += hw.scroll; 988 989 while (priv->scroll >= 4) { 990 input_report_key(dev, BTN_BACK, !hw.down); 991 input_sync(dev); 992 input_report_key(dev, BTN_BACK, hw.down); 993 input_sync(dev); 994 priv->scroll -= 4; 995 } 996 while (priv->scroll <= -4) { 997 input_report_key(dev, BTN_FORWARD, !hw.up); 998 input_sync(dev); 999 input_report_key(dev, BTN_FORWARD, hw.up); 1000 input_sync(dev); 1001 priv->scroll += 4; 1002 } 1003 return; 1004 } 1005 1006 if (hw.z > 0 && hw.x > 1) { 1007 num_fingers = 1; 1008 finger_width = 5; 1009 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1010 switch (hw.w) { 1011 case 0 ... 1: 1012 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1013 num_fingers = hw.w + 2; 1014 break; 1015 case 2: 1016 if (SYN_MODEL_PEN(priv->model_id)) 1017 ; /* Nothing, treat a pen as a single finger */ 1018 break; 1019 case 4 ... 15: 1020 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1021 finger_width = hw.w; 1022 break; 1023 } 1024 } 1025 } else { 1026 num_fingers = 0; 1027 finger_width = 0; 1028 } 1029 1030 if (cr48_profile_sensor) { 1031 synaptics_report_mt_data(psmouse, &hw, num_fingers); 1032 return; 1033 } 1034 1035 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1036 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1037 num_fingers); 1038 1039 /* Post events 1040 * BTN_TOUCH has to be first as mousedev relies on it when doing 1041 * absolute -> relative conversion 1042 */ 1043 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1044 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1045 1046 if (num_fingers > 0) { 1047 input_report_abs(dev, ABS_X, hw.x); 1048 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1049 } 1050 input_report_abs(dev, ABS_PRESSURE, hw.z); 1051 1052 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1053 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1054 1055 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1056 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1057 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1058 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1059 } 1060 1061 synaptics_report_buttons(psmouse, &hw); 1062 1063 input_sync(dev); 1064 } 1065 1066 static int synaptics_validate_byte(struct psmouse *psmouse, 1067 int idx, unsigned char pkt_type) 1068 { 1069 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1070 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1071 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1072 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1073 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1074 const char *packet = psmouse->packet; 1075 1076 if (idx < 0 || idx > 4) 1077 return 0; 1078 1079 switch (pkt_type) { 1080 1081 case SYN_NEWABS: 1082 case SYN_NEWABS_RELAXED: 1083 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1084 1085 case SYN_NEWABS_STRICT: 1086 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1087 1088 case SYN_OLDABS: 1089 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1090 1091 default: 1092 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1093 return 0; 1094 } 1095 } 1096 1097 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1098 { 1099 int i; 1100 1101 for (i = 0; i < 5; i++) 1102 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1103 psmouse_info(psmouse, "using relaxed packet validation\n"); 1104 return SYN_NEWABS_RELAXED; 1105 } 1106 1107 return SYN_NEWABS_STRICT; 1108 } 1109 1110 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1111 { 1112 struct synaptics_data *priv = psmouse->private; 1113 1114 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1115 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1116 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1117 1118 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1119 synaptics_is_pt_packet(psmouse->packet)) { 1120 if (priv->pt_port) 1121 synaptics_pass_pt_packet(psmouse, priv->pt_port, 1122 psmouse->packet); 1123 } else 1124 synaptics_process_packet(psmouse); 1125 1126 return PSMOUSE_FULL_PACKET; 1127 } 1128 1129 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1130 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1131 } 1132 1133 /***************************************************************************** 1134 * Driver initialization/cleanup functions 1135 ****************************************************************************/ 1136 static void set_abs_position_params(struct input_dev *dev, 1137 struct synaptics_data *priv, int x_code, 1138 int y_code) 1139 { 1140 int x_min = priv->x_min ?: XMIN_NOMINAL; 1141 int x_max = priv->x_max ?: XMAX_NOMINAL; 1142 int y_min = priv->y_min ?: YMIN_NOMINAL; 1143 int y_max = priv->y_max ?: YMAX_NOMINAL; 1144 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1145 SYN_REDUCED_FILTER_FUZZ : 0; 1146 1147 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1148 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1149 input_abs_set_res(dev, x_code, priv->x_res); 1150 input_abs_set_res(dev, y_code, priv->y_res); 1151 } 1152 1153 static void set_input_params(struct psmouse *psmouse, 1154 struct synaptics_data *priv) 1155 { 1156 struct input_dev *dev = psmouse->dev; 1157 int i; 1158 1159 /* Things that apply to both modes */ 1160 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1161 __set_bit(EV_KEY, dev->evbit); 1162 __set_bit(BTN_LEFT, dev->keybit); 1163 __set_bit(BTN_RIGHT, dev->keybit); 1164 1165 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1166 __set_bit(BTN_MIDDLE, dev->keybit); 1167 1168 if (!priv->absolute_mode) { 1169 /* Relative mode */ 1170 __set_bit(EV_REL, dev->evbit); 1171 __set_bit(REL_X, dev->relbit); 1172 __set_bit(REL_Y, dev->relbit); 1173 return; 1174 } 1175 1176 /* Absolute mode */ 1177 __set_bit(EV_ABS, dev->evbit); 1178 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1179 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1180 1181 if (cr48_profile_sensor) 1182 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1183 1184 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1185 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1186 ABS_MT_POSITION_Y); 1187 /* Image sensors can report per-contact pressure */ 1188 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1189 input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); 1190 1191 /* Image sensors can signal 4 and 5 finger clicks */ 1192 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1193 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1194 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1195 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1196 ABS_MT_POSITION_Y); 1197 /* 1198 * Profile sensor in CR-48 tracks contacts reasonably well, 1199 * other non-image sensors with AGM use semi-mt. 1200 */ 1201 input_mt_init_slots(dev, 2, 1202 INPUT_MT_POINTER | 1203 (cr48_profile_sensor ? 1204 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1205 } 1206 1207 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1208 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1209 1210 __set_bit(BTN_TOUCH, dev->keybit); 1211 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1212 1213 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1214 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1215 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1216 } 1217 1218 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1219 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1220 __set_bit(BTN_FORWARD, dev->keybit); 1221 __set_bit(BTN_BACK, dev->keybit); 1222 } 1223 1224 if (!SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1225 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1226 __set_bit(BTN_0 + i, dev->keybit); 1227 1228 __clear_bit(EV_REL, dev->evbit); 1229 __clear_bit(REL_X, dev->relbit); 1230 __clear_bit(REL_Y, dev->relbit); 1231 1232 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1233 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1234 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && 1235 !SYN_CAP_EXT_BUTTONS_STICK(priv->ext_cap_10)) 1236 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1237 /* Clickpads report only left button */ 1238 __clear_bit(BTN_RIGHT, dev->keybit); 1239 __clear_bit(BTN_MIDDLE, dev->keybit); 1240 } 1241 } 1242 1243 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1244 void *data, char *buf) 1245 { 1246 struct synaptics_data *priv = psmouse->private; 1247 1248 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1249 } 1250 1251 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1252 void *data, const char *buf, 1253 size_t len) 1254 { 1255 struct synaptics_data *priv = psmouse->private; 1256 unsigned int value; 1257 int err; 1258 1259 err = kstrtouint(buf, 10, &value); 1260 if (err) 1261 return err; 1262 1263 if (value > 1) 1264 return -EINVAL; 1265 1266 if (value == priv->disable_gesture) 1267 return len; 1268 1269 priv->disable_gesture = value; 1270 if (value) 1271 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1272 else 1273 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1274 1275 if (synaptics_mode_cmd(psmouse, priv->mode)) 1276 return -EIO; 1277 1278 return len; 1279 } 1280 1281 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1282 synaptics_show_disable_gesture, 1283 synaptics_set_disable_gesture); 1284 1285 static void synaptics_disconnect(struct psmouse *psmouse) 1286 { 1287 struct synaptics_data *priv = psmouse->private; 1288 1289 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1290 device_remove_file(&psmouse->ps2dev.serio->dev, 1291 &psmouse_attr_disable_gesture.dattr); 1292 1293 synaptics_reset(psmouse); 1294 kfree(priv); 1295 psmouse->private = NULL; 1296 } 1297 1298 static int synaptics_reconnect(struct psmouse *psmouse) 1299 { 1300 struct synaptics_data *priv = psmouse->private; 1301 struct synaptics_data old_priv = *priv; 1302 unsigned char param[2]; 1303 int retry = 0; 1304 int error; 1305 1306 do { 1307 psmouse_reset(psmouse); 1308 if (retry) { 1309 /* 1310 * On some boxes, right after resuming, the touchpad 1311 * needs some time to finish initializing (I assume 1312 * it needs time to calibrate) and start responding 1313 * to Synaptics-specific queries, so let's wait a 1314 * bit. 1315 */ 1316 ssleep(1); 1317 } 1318 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1319 error = synaptics_detect(psmouse, 0); 1320 } while (error && ++retry < 3); 1321 1322 if (error) 1323 return -1; 1324 1325 if (retry > 1) 1326 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1327 1328 if (synaptics_query_hardware(psmouse)) { 1329 psmouse_err(psmouse, "Unable to query device.\n"); 1330 return -1; 1331 } 1332 1333 if (synaptics_set_mode(psmouse)) { 1334 psmouse_err(psmouse, "Unable to initialize device.\n"); 1335 return -1; 1336 } 1337 1338 if (old_priv.identity != priv->identity || 1339 old_priv.model_id != priv->model_id || 1340 old_priv.capabilities != priv->capabilities || 1341 old_priv.ext_cap != priv->ext_cap) { 1342 psmouse_err(psmouse, 1343 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1344 old_priv.identity, priv->identity, 1345 old_priv.model_id, priv->model_id, 1346 old_priv.capabilities, priv->capabilities, 1347 old_priv.ext_cap, priv->ext_cap); 1348 return -1; 1349 } 1350 1351 return 0; 1352 } 1353 1354 static bool impaired_toshiba_kbc; 1355 1356 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1357 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1358 { 1359 /* Toshiba Satellite */ 1360 .matches = { 1361 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1362 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1363 }, 1364 }, 1365 { 1366 /* Toshiba Dynabook */ 1367 .matches = { 1368 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1369 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1370 }, 1371 }, 1372 { 1373 /* Toshiba Portege M300 */ 1374 .matches = { 1375 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1376 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1377 }, 1378 1379 }, 1380 { 1381 /* Toshiba Portege M300 */ 1382 .matches = { 1383 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1384 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1385 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1386 }, 1387 1388 }, 1389 #endif 1390 { } 1391 }; 1392 1393 static bool broken_olpc_ec; 1394 1395 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1396 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1397 { 1398 /* OLPC XO-1 or XO-1.5 */ 1399 .matches = { 1400 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1401 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1402 }, 1403 }, 1404 #endif 1405 { } 1406 }; 1407 1408 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1409 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1410 { 1411 /* Cr-48 Chromebook (Codename Mario) */ 1412 .matches = { 1413 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1414 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1415 }, 1416 }, 1417 #endif 1418 { } 1419 }; 1420 1421 static const struct dmi_system_id forcepad_dmi_table[] __initconst = { 1422 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1423 { 1424 .matches = { 1425 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1426 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"), 1427 }, 1428 }, 1429 #endif 1430 { } 1431 }; 1432 1433 void __init synaptics_module_init(void) 1434 { 1435 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1436 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1437 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1438 1439 /* 1440 * Unfortunately ForcePad capability is not exported over PS/2, 1441 * so we have to resort to checking DMI. 1442 */ 1443 is_forcepad = dmi_check_system(forcepad_dmi_table); 1444 } 1445 1446 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1447 { 1448 struct synaptics_data *priv; 1449 int err = -1; 1450 1451 /* 1452 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1453 * packet spew overloads the EC such that key presses on the keyboard 1454 * are missed. Given that, don't even attempt to use Absolute mode. 1455 * Relative mode seems to work just fine. 1456 */ 1457 if (absolute_mode && broken_olpc_ec) { 1458 psmouse_info(psmouse, 1459 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1460 return -ENODEV; 1461 } 1462 1463 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1464 if (!priv) 1465 return -ENOMEM; 1466 1467 psmouse_reset(psmouse); 1468 1469 if (synaptics_query_hardware(psmouse)) { 1470 psmouse_err(psmouse, "Unable to query device.\n"); 1471 goto init_fail; 1472 } 1473 1474 priv->absolute_mode = absolute_mode; 1475 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1476 priv->disable_gesture = true; 1477 1478 if (synaptics_set_mode(psmouse)) { 1479 psmouse_err(psmouse, "Unable to initialize device.\n"); 1480 goto init_fail; 1481 } 1482 1483 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1484 1485 psmouse_info(psmouse, 1486 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1487 SYN_ID_MODEL(priv->identity), 1488 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1489 priv->model_id, 1490 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1491 priv->board_id, priv->firmware_id); 1492 1493 set_input_params(psmouse, priv); 1494 1495 /* 1496 * Encode touchpad model so that it can be used to set 1497 * input device->id.version and be visible to userspace. 1498 * Because version is __u16 we have to drop something. 1499 * Hardware info bits seem to be good candidates as they 1500 * are documented to be for Synaptics corp. internal use. 1501 */ 1502 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1503 (priv->model_id & 0x000000ff); 1504 1505 if (absolute_mode) { 1506 psmouse->protocol_handler = synaptics_process_byte; 1507 psmouse->pktsize = 6; 1508 } else { 1509 /* Relative mode follows standard PS/2 mouse protocol */ 1510 psmouse->protocol_handler = psmouse_process_byte; 1511 psmouse->pktsize = 3; 1512 } 1513 1514 psmouse->set_rate = synaptics_set_rate; 1515 psmouse->disconnect = synaptics_disconnect; 1516 psmouse->reconnect = synaptics_reconnect; 1517 psmouse->cleanup = synaptics_reset; 1518 /* Synaptics can usually stay in sync without extra help */ 1519 psmouse->resync_time = 0; 1520 1521 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1522 synaptics_pt_create(psmouse); 1523 1524 /* 1525 * Toshiba's KBC seems to have trouble handling data from 1526 * Synaptics at full rate. Switch to a lower rate (roughly 1527 * the same rate as a standard PS/2 mouse). 1528 */ 1529 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1530 psmouse_info(psmouse, 1531 "Toshiba %s detected, limiting rate to 40pps.\n", 1532 dmi_get_system_info(DMI_PRODUCT_NAME)); 1533 psmouse->rate = 40; 1534 } 1535 1536 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1537 err = device_create_file(&psmouse->ps2dev.serio->dev, 1538 &psmouse_attr_disable_gesture.dattr); 1539 if (err) { 1540 psmouse_err(psmouse, 1541 "Failed to create disable_gesture attribute (%d)", 1542 err); 1543 goto init_fail; 1544 } 1545 } 1546 1547 return 0; 1548 1549 init_fail: 1550 kfree(priv); 1551 return err; 1552 } 1553 1554 int synaptics_init(struct psmouse *psmouse) 1555 { 1556 return __synaptics_init(psmouse, true); 1557 } 1558 1559 int synaptics_init_relative(struct psmouse *psmouse) 1560 { 1561 return __synaptics_init(psmouse, false); 1562 } 1563 1564 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1565 1566 void __init synaptics_module_init(void) 1567 { 1568 } 1569 1570 int synaptics_init(struct psmouse *psmouse) 1571 { 1572 return -ENOSYS; 1573 } 1574 1575 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1576