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 struct min_max_quirk { 124 const char * const *pnp_ids; 125 int x_min, x_max, y_min, y_max; 126 }; 127 128 static const struct min_max_quirk min_max_pnpid_table[] = { 129 { 130 (const char * const []){"LEN0033", NULL}, 131 1024, 5052, 2258, 4832 132 }, 133 { 134 (const char * const []){"LEN0035", "LEN0042", NULL}, 135 1232, 5710, 1156, 4696 136 }, 137 { 138 (const char * const []){"LEN0034", "LEN0036", "LEN2002", 139 "LEN2004", NULL}, 140 1024, 5112, 2024, 4832 141 }, 142 { 143 (const char * const []){"LEN2001", NULL}, 144 1024, 5022, 2508, 4832 145 }, 146 { } 147 }; 148 149 /* This list has been kindly provided by Synaptics. */ 150 static const char * const topbuttonpad_pnp_ids[] = { 151 "LEN0017", 152 "LEN0018", 153 "LEN0019", 154 "LEN0023", 155 "LEN002A", 156 "LEN002B", 157 "LEN002C", 158 "LEN002D", 159 "LEN002E", 160 "LEN0033", /* Helix */ 161 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 162 "LEN0035", /* X240 */ 163 "LEN0036", /* T440 */ 164 "LEN0037", 165 "LEN0038", 166 "LEN0041", 167 "LEN0042", /* Yoga */ 168 "LEN0045", 169 "LEN0046", 170 "LEN0047", 171 "LEN0048", 172 "LEN0049", 173 "LEN2000", 174 "LEN2001", /* Edge E431 */ 175 "LEN2002", /* Edge E531 */ 176 "LEN2003", 177 "LEN2004", /* L440 */ 178 "LEN2005", 179 "LEN2006", 180 "LEN2007", 181 "LEN2008", 182 "LEN2009", 183 "LEN200A", 184 "LEN200B", 185 NULL 186 }; 187 188 static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[]) 189 { 190 int i; 191 192 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) 193 for (i = 0; ids[i]; i++) 194 if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i])) 195 return true; 196 197 return false; 198 } 199 200 /***************************************************************************** 201 * Synaptics communications functions 202 ****************************************************************************/ 203 204 /* 205 * Synaptics touchpads report the y coordinate from bottom to top, which is 206 * opposite from what userspace expects. 207 * This function is used to invert y before reporting. 208 */ 209 static int synaptics_invert_y(int y) 210 { 211 return YMAX_NOMINAL + YMIN_NOMINAL - y; 212 } 213 214 /* 215 * Send a command to the synpatics touchpad by special commands 216 */ 217 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 218 { 219 if (psmouse_sliced_command(psmouse, c)) 220 return -1; 221 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 222 return -1; 223 return 0; 224 } 225 226 /* 227 * Read the model-id bytes from the touchpad 228 * see also SYN_MODEL_* macros 229 */ 230 static int synaptics_model_id(struct psmouse *psmouse) 231 { 232 struct synaptics_data *priv = psmouse->private; 233 unsigned char mi[3]; 234 235 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 236 return -1; 237 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 238 return 0; 239 } 240 241 /* 242 * Read the board id from the touchpad 243 * The board id is encoded in the "QUERY MODES" response 244 */ 245 static int synaptics_board_id(struct psmouse *psmouse) 246 { 247 struct synaptics_data *priv = psmouse->private; 248 unsigned char bid[3]; 249 250 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 251 return -1; 252 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 253 return 0; 254 } 255 256 /* 257 * Read the firmware id from the touchpad 258 */ 259 static int synaptics_firmware_id(struct psmouse *psmouse) 260 { 261 struct synaptics_data *priv = psmouse->private; 262 unsigned char fwid[3]; 263 264 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 265 return -1; 266 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 267 return 0; 268 } 269 270 /* 271 * Read the capability-bits from the touchpad 272 * see also the SYN_CAP_* macros 273 */ 274 static int synaptics_capability(struct psmouse *psmouse) 275 { 276 struct synaptics_data *priv = psmouse->private; 277 unsigned char cap[3]; 278 279 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 280 return -1; 281 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 282 priv->ext_cap = priv->ext_cap_0c = 0; 283 284 /* 285 * Older firmwares had submodel ID fixed to 0x47 286 */ 287 if (SYN_ID_FULL(priv->identity) < 0x705 && 288 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 289 return -1; 290 } 291 292 /* 293 * Unless capExtended is set the rest of the flags should be ignored 294 */ 295 if (!SYN_CAP_EXTENDED(priv->capabilities)) 296 priv->capabilities = 0; 297 298 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 299 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 300 psmouse_warn(psmouse, 301 "device claims to have extended capabilities, but I'm not able to read them.\n"); 302 } else { 303 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 304 305 /* 306 * if nExtBtn is greater than 8 it should be considered 307 * invalid and treated as 0 308 */ 309 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 310 priv->ext_cap &= 0xff0fff; 311 } 312 } 313 314 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 315 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 316 psmouse_warn(psmouse, 317 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 318 } else { 319 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 320 } 321 } 322 323 return 0; 324 } 325 326 /* 327 * Identify Touchpad 328 * See also the SYN_ID_* macros 329 */ 330 static int synaptics_identify(struct psmouse *psmouse) 331 { 332 struct synaptics_data *priv = psmouse->private; 333 unsigned char id[3]; 334 335 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 336 return -1; 337 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 338 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 339 return 0; 340 return -1; 341 } 342 343 /* 344 * Read touchpad resolution and maximum reported coordinates 345 * Resolution is left zero if touchpad does not support the query 346 */ 347 348 static int synaptics_resolution(struct psmouse *psmouse) 349 { 350 struct synaptics_data *priv = psmouse->private; 351 unsigned char resp[3]; 352 int i; 353 354 if (SYN_ID_MAJOR(priv->identity) < 4) 355 return 0; 356 357 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 358 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 359 priv->x_res = resp[0]; /* x resolution in units/mm */ 360 priv->y_res = resp[2]; /* y resolution in units/mm */ 361 } 362 } 363 364 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 365 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) { 366 priv->x_min = min_max_pnpid_table[i].x_min; 367 priv->x_max = min_max_pnpid_table[i].x_max; 368 priv->y_min = min_max_pnpid_table[i].y_min; 369 priv->y_max = min_max_pnpid_table[i].y_max; 370 return 0; 371 } 372 } 373 374 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 375 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 376 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 377 psmouse_warn(psmouse, 378 "device claims to have max coordinates query, but I'm not able to read it.\n"); 379 } else { 380 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 381 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 382 } 383 } 384 385 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 386 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 387 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 388 psmouse_warn(psmouse, 389 "device claims to have min coordinates query, but I'm not able to read it.\n"); 390 } else { 391 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 392 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 393 } 394 } 395 396 return 0; 397 } 398 399 static int synaptics_query_hardware(struct psmouse *psmouse) 400 { 401 if (synaptics_identify(psmouse)) 402 return -1; 403 if (synaptics_model_id(psmouse)) 404 return -1; 405 if (synaptics_firmware_id(psmouse)) 406 return -1; 407 if (synaptics_board_id(psmouse)) 408 return -1; 409 if (synaptics_capability(psmouse)) 410 return -1; 411 if (synaptics_resolution(psmouse)) 412 return -1; 413 414 return 0; 415 } 416 417 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 418 { 419 static unsigned char param = 0xc8; 420 struct synaptics_data *priv = psmouse->private; 421 422 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 423 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 424 return 0; 425 426 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 427 return -1; 428 429 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 430 return -1; 431 432 /* Advanced gesture mode also sends multi finger data */ 433 priv->capabilities |= BIT(1); 434 435 return 0; 436 } 437 438 static int synaptics_set_mode(struct psmouse *psmouse) 439 { 440 struct synaptics_data *priv = psmouse->private; 441 442 priv->mode = 0; 443 if (priv->absolute_mode) 444 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 445 if (priv->disable_gesture) 446 priv->mode |= SYN_BIT_DISABLE_GESTURE; 447 if (psmouse->rate >= 80) 448 priv->mode |= SYN_BIT_HIGH_RATE; 449 if (SYN_CAP_EXTENDED(priv->capabilities)) 450 priv->mode |= SYN_BIT_W_MODE; 451 452 if (synaptics_mode_cmd(psmouse, priv->mode)) 453 return -1; 454 455 if (priv->absolute_mode && 456 synaptics_set_advanced_gesture_mode(psmouse)) { 457 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 458 return -1; 459 } 460 461 return 0; 462 } 463 464 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 465 { 466 struct synaptics_data *priv = psmouse->private; 467 468 if (rate >= 80) { 469 priv->mode |= SYN_BIT_HIGH_RATE; 470 psmouse->rate = 80; 471 } else { 472 priv->mode &= ~SYN_BIT_HIGH_RATE; 473 psmouse->rate = 40; 474 } 475 476 synaptics_mode_cmd(psmouse, priv->mode); 477 } 478 479 /***************************************************************************** 480 * Synaptics pass-through PS/2 port support 481 ****************************************************************************/ 482 static int synaptics_pt_write(struct serio *serio, unsigned char c) 483 { 484 struct psmouse *parent = serio_get_drvdata(serio->parent); 485 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 486 487 if (psmouse_sliced_command(parent, c)) 488 return -1; 489 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 490 return -1; 491 return 0; 492 } 493 494 static int synaptics_pt_start(struct serio *serio) 495 { 496 struct psmouse *parent = serio_get_drvdata(serio->parent); 497 struct synaptics_data *priv = parent->private; 498 499 serio_pause_rx(parent->ps2dev.serio); 500 priv->pt_port = serio; 501 serio_continue_rx(parent->ps2dev.serio); 502 503 return 0; 504 } 505 506 static void synaptics_pt_stop(struct serio *serio) 507 { 508 struct psmouse *parent = serio_get_drvdata(serio->parent); 509 struct synaptics_data *priv = parent->private; 510 511 serio_pause_rx(parent->ps2dev.serio); 512 priv->pt_port = NULL; 513 serio_continue_rx(parent->ps2dev.serio); 514 } 515 516 static int synaptics_is_pt_packet(unsigned char *buf) 517 { 518 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 519 } 520 521 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 522 { 523 struct psmouse *child = serio_get_drvdata(ptport); 524 525 if (child && child->state == PSMOUSE_ACTIVATED) { 526 serio_interrupt(ptport, packet[1], 0); 527 serio_interrupt(ptport, packet[4], 0); 528 serio_interrupt(ptport, packet[5], 0); 529 if (child->pktsize == 4) 530 serio_interrupt(ptport, packet[2], 0); 531 } else 532 serio_interrupt(ptport, packet[1], 0); 533 } 534 535 static void synaptics_pt_activate(struct psmouse *psmouse) 536 { 537 struct synaptics_data *priv = psmouse->private; 538 struct psmouse *child = serio_get_drvdata(priv->pt_port); 539 540 /* adjust the touchpad to child's choice of protocol */ 541 if (child) { 542 if (child->pktsize == 4) 543 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 544 else 545 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 546 547 if (synaptics_mode_cmd(psmouse, priv->mode)) 548 psmouse_warn(psmouse, 549 "failed to switch guest protocol\n"); 550 } 551 } 552 553 static void synaptics_pt_create(struct psmouse *psmouse) 554 { 555 struct serio *serio; 556 557 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 558 if (!serio) { 559 psmouse_err(psmouse, 560 "not enough memory for pass-through port\n"); 561 return; 562 } 563 564 serio->id.type = SERIO_PS_PSTHRU; 565 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 566 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 567 serio->write = synaptics_pt_write; 568 serio->start = synaptics_pt_start; 569 serio->stop = synaptics_pt_stop; 570 serio->parent = psmouse->ps2dev.serio; 571 572 psmouse->pt_activate = synaptics_pt_activate; 573 574 psmouse_info(psmouse, "serio: %s port at %s\n", 575 serio->name, psmouse->phys); 576 serio_register_port(serio); 577 } 578 579 /***************************************************************************** 580 * Functions to interpret the absolute mode packets 581 ****************************************************************************/ 582 583 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 584 int sgm, int agm) 585 { 586 state->count = count; 587 state->sgm = sgm; 588 state->agm = agm; 589 } 590 591 static void synaptics_parse_agm(const unsigned char buf[], 592 struct synaptics_data *priv, 593 struct synaptics_hw_state *hw) 594 { 595 struct synaptics_hw_state *agm = &priv->agm; 596 int agm_packet_type; 597 598 agm_packet_type = (buf[5] & 0x30) >> 4; 599 switch (agm_packet_type) { 600 case 1: 601 /* Gesture packet: (x, y, z) half resolution */ 602 agm->w = hw->w; 603 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 604 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 605 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 606 break; 607 608 case 2: 609 /* AGM-CONTACT packet: (count, sgm, agm) */ 610 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 611 break; 612 613 default: 614 break; 615 } 616 617 /* Record that at least one AGM has been received since last SGM */ 618 priv->agm_pending = true; 619 } 620 621 static int synaptics_parse_hw_state(const unsigned char buf[], 622 struct synaptics_data *priv, 623 struct synaptics_hw_state *hw) 624 { 625 memset(hw, 0, sizeof(struct synaptics_hw_state)); 626 627 if (SYN_MODEL_NEWABS(priv->model_id)) { 628 hw->w = (((buf[0] & 0x30) >> 2) | 629 ((buf[0] & 0x04) >> 1) | 630 ((buf[3] & 0x04) >> 2)); 631 632 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 633 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 634 hw->w == 2) { 635 synaptics_parse_agm(buf, priv, hw); 636 return 1; 637 } 638 639 hw->x = (((buf[3] & 0x10) << 8) | 640 ((buf[1] & 0x0f) << 8) | 641 buf[4]); 642 hw->y = (((buf[3] & 0x20) << 7) | 643 ((buf[1] & 0xf0) << 4) | 644 buf[5]); 645 hw->z = buf[2]; 646 647 hw->left = (buf[0] & 0x01) ? 1 : 0; 648 hw->right = (buf[0] & 0x02) ? 1 : 0; 649 650 if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) { 651 /* 652 * ForcePads, like Clickpads, use middle button 653 * bits to report primary button clicks. 654 * Unfortunately they report primary button not 655 * only when user presses on the pad above certain 656 * threshold, but also when there are more than one 657 * finger on the touchpad, which interferes with 658 * out multi-finger gestures. 659 */ 660 if (hw->z == 0) { 661 /* No contacts */ 662 priv->press = priv->report_press = false; 663 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 664 /* 665 * Single-finger touch with pressure above 666 * the threshold. If pressure stays long 667 * enough, we'll start reporting primary 668 * button. We rely on the device continuing 669 * sending data even if finger does not 670 * move. 671 */ 672 if (!priv->press) { 673 priv->press_start = jiffies; 674 priv->press = true; 675 } else if (time_after(jiffies, 676 priv->press_start + 677 msecs_to_jiffies(50))) { 678 priv->report_press = true; 679 } 680 } else { 681 priv->press = false; 682 } 683 684 hw->left = priv->report_press; 685 686 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 687 /* 688 * Clickpad's button is transmitted as middle button, 689 * however, since it is primary button, we will report 690 * it as BTN_LEFT. 691 */ 692 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 693 694 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 695 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 696 if (hw->w == 2) 697 hw->scroll = (signed char)(buf[1]); 698 } 699 700 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 701 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 702 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 703 } 704 705 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 706 ((buf[0] ^ buf[3]) & 0x02)) { 707 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 708 default: 709 /* 710 * if nExtBtn is greater than 8 it should be 711 * considered invalid and treated as 0 712 */ 713 break; 714 case 8: 715 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 716 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 717 case 6: 718 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 719 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 720 case 4: 721 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 722 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 723 case 2: 724 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 725 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 726 } 727 } 728 } else { 729 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 730 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 731 732 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 733 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 734 735 hw->left = (buf[0] & 0x01) ? 1 : 0; 736 hw->right = (buf[0] & 0x02) ? 1 : 0; 737 } 738 739 /* 740 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 741 * is used by some firmware to indicate a finger at the edge of 742 * the touchpad whose precise position cannot be determined, so 743 * convert these values to the maximum axis value. 744 */ 745 if (hw->x > X_MAX_POSITIVE) 746 hw->x -= 1 << ABS_POS_BITS; 747 else if (hw->x == X_MAX_POSITIVE) 748 hw->x = XMAX; 749 750 if (hw->y > Y_MAX_POSITIVE) 751 hw->y -= 1 << ABS_POS_BITS; 752 else if (hw->y == Y_MAX_POSITIVE) 753 hw->y = YMAX; 754 755 return 0; 756 } 757 758 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 759 bool active, int x, int y) 760 { 761 input_mt_slot(dev, slot); 762 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 763 if (active) { 764 input_report_abs(dev, ABS_MT_POSITION_X, x); 765 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 766 } 767 } 768 769 static void synaptics_report_semi_mt_data(struct input_dev *dev, 770 const struct synaptics_hw_state *a, 771 const struct synaptics_hw_state *b, 772 int num_fingers) 773 { 774 if (num_fingers >= 2) { 775 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 776 min(a->y, b->y)); 777 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 778 max(a->y, b->y)); 779 } else if (num_fingers == 1) { 780 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 781 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 782 } else { 783 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 784 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 785 } 786 } 787 788 static void synaptics_report_buttons(struct psmouse *psmouse, 789 const struct synaptics_hw_state *hw) 790 { 791 struct input_dev *dev = psmouse->dev; 792 struct synaptics_data *priv = psmouse->private; 793 int i; 794 795 input_report_key(dev, BTN_LEFT, hw->left); 796 input_report_key(dev, BTN_RIGHT, hw->right); 797 798 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 799 input_report_key(dev, BTN_MIDDLE, hw->middle); 800 801 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 802 input_report_key(dev, BTN_FORWARD, hw->up); 803 input_report_key(dev, BTN_BACK, hw->down); 804 } 805 806 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 807 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 808 } 809 810 static void synaptics_report_slot(struct input_dev *dev, int slot, 811 const struct synaptics_hw_state *hw) 812 { 813 input_mt_slot(dev, slot); 814 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 815 if (!hw) 816 return; 817 818 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 819 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 820 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 821 } 822 823 static void synaptics_report_mt_data(struct psmouse *psmouse, 824 struct synaptics_mt_state *mt_state, 825 const struct synaptics_hw_state *sgm) 826 { 827 struct input_dev *dev = psmouse->dev; 828 struct synaptics_data *priv = psmouse->private; 829 struct synaptics_hw_state *agm = &priv->agm; 830 struct synaptics_mt_state *old = &priv->mt_state; 831 832 switch (mt_state->count) { 833 case 0: 834 synaptics_report_slot(dev, 0, NULL); 835 synaptics_report_slot(dev, 1, NULL); 836 break; 837 case 1: 838 if (mt_state->sgm == -1) { 839 synaptics_report_slot(dev, 0, NULL); 840 synaptics_report_slot(dev, 1, NULL); 841 } else if (mt_state->sgm == 0) { 842 synaptics_report_slot(dev, 0, sgm); 843 synaptics_report_slot(dev, 1, NULL); 844 } else { 845 synaptics_report_slot(dev, 0, NULL); 846 synaptics_report_slot(dev, 1, sgm); 847 } 848 break; 849 default: 850 /* 851 * If the finger slot contained in SGM is valid, and either 852 * hasn't changed, or is new, or the old SGM has now moved to 853 * AGM, then report SGM in MTB slot 0. 854 * Otherwise, empty MTB slot 0. 855 */ 856 if (mt_state->sgm != -1 && 857 (mt_state->sgm == old->sgm || 858 old->sgm == -1 || mt_state->agm == old->sgm)) 859 synaptics_report_slot(dev, 0, sgm); 860 else 861 synaptics_report_slot(dev, 0, NULL); 862 863 /* 864 * If the finger slot contained in AGM is valid, and either 865 * hasn't changed, or is new, then report AGM in MTB slot 1. 866 * Otherwise, empty MTB slot 1. 867 * 868 * However, in the case where the AGM is new, make sure that 869 * that it is either the same as the old SGM, or there was no 870 * SGM. 871 * 872 * Otherwise, if the SGM was just 1, and the new AGM is 2, then 873 * the new AGM will keep the old SGM's tracking ID, which can 874 * cause apparent drumroll. This happens if in the following 875 * valid finger sequence: 876 * 877 * Action SGM AGM (MTB slot:Contact) 878 * 1. Touch contact 0 (0:0) 879 * 2. Touch contact 1 (0:0, 1:1) 880 * 3. Lift contact 0 (1:1) 881 * 4. Touch contacts 2,3 (0:2, 1:3) 882 * 883 * In step 4, contact 3, in AGM must not be given the same 884 * tracking ID as contact 1 had in step 3. To avoid this, 885 * the first agm with contact 3 is dropped and slot 1 is 886 * invalidated (tracking ID = -1). 887 */ 888 if (mt_state->agm != -1 && 889 (mt_state->agm == old->agm || 890 (old->agm == -1 && 891 (old->sgm == -1 || mt_state->agm == old->sgm)))) 892 synaptics_report_slot(dev, 1, agm); 893 else 894 synaptics_report_slot(dev, 1, NULL); 895 break; 896 } 897 898 /* Don't use active slot count to generate BTN_TOOL events. */ 899 input_mt_report_pointer_emulation(dev, false); 900 901 /* Send the number of fingers reported by touchpad itself. */ 902 input_mt_report_finger_count(dev, mt_state->count); 903 904 synaptics_report_buttons(psmouse, sgm); 905 906 input_sync(dev); 907 } 908 909 /* Handle case where mt_state->count = 0 */ 910 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 911 struct synaptics_mt_state *mt_state) 912 { 913 synaptics_mt_state_set(mt_state, 0, -1, -1); 914 priv->mt_state_lost = false; 915 } 916 917 /* Handle case where mt_state->count = 1 */ 918 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 919 struct synaptics_mt_state *mt_state) 920 { 921 struct synaptics_hw_state *agm = &priv->agm; 922 struct synaptics_mt_state *old = &priv->mt_state; 923 924 /* 925 * If the last AGM was (0,0,0), and there is only one finger left, 926 * then we absolutely know that SGM contains slot 0, and all other 927 * fingers have been removed. 928 */ 929 if (priv->agm_pending && agm->z == 0) { 930 synaptics_mt_state_set(mt_state, 1, 0, -1); 931 priv->mt_state_lost = false; 932 return; 933 } 934 935 switch (old->count) { 936 case 0: 937 synaptics_mt_state_set(mt_state, 1, 0, -1); 938 break; 939 case 1: 940 /* 941 * If mt_state_lost, then the previous transition was 3->1, 942 * and SGM now contains either slot 0 or 1, but we don't know 943 * which. So, we just assume that the SGM now contains slot 1. 944 * 945 * If pending AGM and either: 946 * (a) the previous SGM slot contains slot 0, or 947 * (b) there was no SGM slot 948 * then, the SGM now contains slot 1 949 * 950 * Case (a) happens with very rapid "drum roll" gestures, where 951 * slot 0 finger is lifted and a new slot 1 finger touches 952 * within one reporting interval. 953 * 954 * Case (b) happens if initially two or more fingers tap 955 * briefly, and all but one lift before the end of the first 956 * reporting interval. 957 * 958 * (In both these cases, slot 0 will becomes empty, so SGM 959 * contains slot 1 with the new finger) 960 * 961 * Else, if there was no previous SGM, it now contains slot 0. 962 * 963 * Otherwise, SGM still contains the same slot. 964 */ 965 if (priv->mt_state_lost || 966 (priv->agm_pending && old->sgm <= 0)) 967 synaptics_mt_state_set(mt_state, 1, 1, -1); 968 else if (old->sgm == -1) 969 synaptics_mt_state_set(mt_state, 1, 0, -1); 970 break; 971 case 2: 972 /* 973 * If mt_state_lost, we don't know which finger SGM contains. 974 * 975 * So, report 1 finger, but with both slots empty. 976 * We will use slot 1 on subsequent 1->1 977 */ 978 if (priv->mt_state_lost) { 979 synaptics_mt_state_set(mt_state, 1, -1, -1); 980 break; 981 } 982 /* 983 * Since the last AGM was NOT (0,0,0), it was the finger in 984 * slot 0 that has been removed. 985 * So, SGM now contains previous AGM's slot, and AGM is now 986 * empty. 987 */ 988 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 989 break; 990 case 3: 991 /* 992 * Since last AGM was not (0,0,0), we don't know which finger 993 * is left. 994 * 995 * So, report 1 finger, but with both slots empty. 996 * We will use slot 1 on subsequent 1->1 997 */ 998 synaptics_mt_state_set(mt_state, 1, -1, -1); 999 priv->mt_state_lost = true; 1000 break; 1001 case 4: 1002 case 5: 1003 /* mt_state was updated by AGM-CONTACT packet */ 1004 break; 1005 } 1006 } 1007 1008 /* Handle case where mt_state->count = 2 */ 1009 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 1010 struct synaptics_mt_state *mt_state) 1011 { 1012 struct synaptics_mt_state *old = &priv->mt_state; 1013 1014 switch (old->count) { 1015 case 0: 1016 synaptics_mt_state_set(mt_state, 2, 0, 1); 1017 break; 1018 case 1: 1019 /* 1020 * If previous SGM contained slot 1 or higher, SGM now contains 1021 * slot 0 (the newly touching finger) and AGM contains SGM's 1022 * previous slot. 1023 * 1024 * Otherwise, SGM still contains slot 0 and AGM now contains 1025 * slot 1. 1026 */ 1027 if (old->sgm >= 1) 1028 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 1029 else 1030 synaptics_mt_state_set(mt_state, 2, 0, 1); 1031 break; 1032 case 2: 1033 /* 1034 * If mt_state_lost, SGM now contains either finger 1 or 2, but 1035 * we don't know which. 1036 * So, we just assume that the SGM contains slot 0 and AGM 1. 1037 */ 1038 if (priv->mt_state_lost) 1039 synaptics_mt_state_set(mt_state, 2, 0, 1); 1040 /* 1041 * Otherwise, use the same mt_state, since it either hasn't 1042 * changed, or was updated by a recently received AGM-CONTACT 1043 * packet. 1044 */ 1045 break; 1046 case 3: 1047 /* 1048 * 3->2 transitions have two unsolvable problems: 1049 * 1) no indication is given which finger was removed 1050 * 2) no way to tell if agm packet was for finger 3 1051 * before 3->2, or finger 2 after 3->2. 1052 * 1053 * So, report 2 fingers, but empty all slots. 1054 * We will guess slots [0,1] on subsequent 2->2. 1055 */ 1056 synaptics_mt_state_set(mt_state, 2, -1, -1); 1057 priv->mt_state_lost = true; 1058 break; 1059 case 4: 1060 case 5: 1061 /* mt_state was updated by AGM-CONTACT packet */ 1062 break; 1063 } 1064 } 1065 1066 /* Handle case where mt_state->count = 3 */ 1067 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 1068 struct synaptics_mt_state *mt_state) 1069 { 1070 struct synaptics_mt_state *old = &priv->mt_state; 1071 1072 switch (old->count) { 1073 case 0: 1074 synaptics_mt_state_set(mt_state, 3, 0, 2); 1075 break; 1076 case 1: 1077 /* 1078 * If previous SGM contained slot 2 or higher, SGM now contains 1079 * slot 0 (one of the newly touching fingers) and AGM contains 1080 * SGM's previous slot. 1081 * 1082 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 1083 */ 1084 if (old->sgm >= 2) 1085 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 1086 else 1087 synaptics_mt_state_set(mt_state, 3, 0, 2); 1088 break; 1089 case 2: 1090 /* 1091 * If the AGM previously contained slot 3 or higher, then the 1092 * newly touching finger is in the lowest available slot. 1093 * 1094 * If SGM was previously 1 or higher, then the new SGM is 1095 * now slot 0 (with a new finger), otherwise, the new finger 1096 * is now in a hidden slot between 0 and AGM's slot. 1097 * 1098 * In all such cases, the SGM now contains slot 0, and the AGM 1099 * continues to contain the same slot as before. 1100 */ 1101 if (old->agm >= 3) { 1102 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 1103 break; 1104 } 1105 1106 /* 1107 * After some 3->1 and all 3->2 transitions, we lose track 1108 * of which slot is reported by SGM and AGM. 1109 * 1110 * For 2->3 in this state, report 3 fingers, but empty all 1111 * slots, and we will guess (0,2) on a subsequent 0->3. 1112 * 1113 * To userspace, the resulting transition will look like: 1114 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 1115 */ 1116 if (priv->mt_state_lost) { 1117 synaptics_mt_state_set(mt_state, 3, -1, -1); 1118 break; 1119 } 1120 1121 /* 1122 * If the (SGM,AGM) really previously contained slots (0, 1), 1123 * then we cannot know what slot was just reported by the AGM, 1124 * because the 2->3 transition can occur either before or after 1125 * the AGM packet. Thus, this most recent AGM could contain 1126 * either the same old slot 1 or the new slot 2. 1127 * Subsequent AGMs will be reporting slot 2. 1128 * 1129 * To userspace, the resulting transition will look like: 1130 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 1131 */ 1132 synaptics_mt_state_set(mt_state, 3, 0, -1); 1133 break; 1134 case 3: 1135 /* 1136 * If, for whatever reason, the previous agm was invalid, 1137 * Assume SGM now contains slot 0, AGM now contains slot 2. 1138 */ 1139 if (old->agm <= 2) 1140 synaptics_mt_state_set(mt_state, 3, 0, 2); 1141 /* 1142 * mt_state either hasn't changed, or was updated by a recently 1143 * received AGM-CONTACT packet. 1144 */ 1145 break; 1146 1147 case 4: 1148 case 5: 1149 /* mt_state was updated by AGM-CONTACT packet */ 1150 break; 1151 } 1152 } 1153 1154 /* Handle case where mt_state->count = 4, or = 5 */ 1155 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 1156 struct synaptics_mt_state *mt_state) 1157 { 1158 /* mt_state was updated correctly by AGM-CONTACT packet */ 1159 priv->mt_state_lost = false; 1160 } 1161 1162 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1163 struct synaptics_hw_state *sgm) 1164 { 1165 struct synaptics_data *priv = psmouse->private; 1166 struct synaptics_hw_state *agm = &priv->agm; 1167 struct synaptics_mt_state mt_state; 1168 1169 /* Initialize using current mt_state (as updated by last agm) */ 1170 mt_state = agm->mt_state; 1171 1172 /* 1173 * Update mt_state using the new finger count and current mt_state. 1174 */ 1175 if (sgm->z == 0) 1176 synaptics_image_sensor_0f(priv, &mt_state); 1177 else if (sgm->w >= 4) 1178 synaptics_image_sensor_1f(priv, &mt_state); 1179 else if (sgm->w == 0) 1180 synaptics_image_sensor_2f(priv, &mt_state); 1181 else if (sgm->w == 1 && mt_state.count <= 3) 1182 synaptics_image_sensor_3f(priv, &mt_state); 1183 else 1184 synaptics_image_sensor_45f(priv, &mt_state); 1185 1186 /* Send resulting input events to user space */ 1187 synaptics_report_mt_data(psmouse, &mt_state, sgm); 1188 1189 /* Store updated mt_state */ 1190 priv->mt_state = agm->mt_state = mt_state; 1191 priv->agm_pending = false; 1192 } 1193 1194 static void synaptics_profile_sensor_process(struct psmouse *psmouse, 1195 struct synaptics_hw_state *sgm, 1196 int num_fingers) 1197 { 1198 struct input_dev *dev = psmouse->dev; 1199 struct synaptics_data *priv = psmouse->private; 1200 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 1201 struct input_mt_pos pos[2]; 1202 int slot[2], nsemi, i; 1203 1204 nsemi = clamp_val(num_fingers, 0, 2); 1205 1206 for (i = 0; i < nsemi; i++) { 1207 pos[i].x = hw[i]->x; 1208 pos[i].y = synaptics_invert_y(hw[i]->y); 1209 } 1210 1211 input_mt_assign_slots(dev, slot, pos, nsemi); 1212 1213 for (i = 0; i < nsemi; i++) { 1214 input_mt_slot(dev, slot[i]); 1215 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 1216 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 1217 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 1218 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 1219 } 1220 1221 input_mt_drop_unused(dev); 1222 input_mt_report_pointer_emulation(dev, false); 1223 input_mt_report_finger_count(dev, num_fingers); 1224 1225 synaptics_report_buttons(psmouse, sgm); 1226 1227 input_sync(dev); 1228 } 1229 1230 /* 1231 * called for each full received packet from the touchpad 1232 */ 1233 static void synaptics_process_packet(struct psmouse *psmouse) 1234 { 1235 struct input_dev *dev = psmouse->dev; 1236 struct synaptics_data *priv = psmouse->private; 1237 struct synaptics_hw_state hw; 1238 int num_fingers; 1239 int finger_width; 1240 1241 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1242 return; 1243 1244 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1245 synaptics_image_sensor_process(psmouse, &hw); 1246 return; 1247 } 1248 1249 if (hw.scroll) { 1250 priv->scroll += hw.scroll; 1251 1252 while (priv->scroll >= 4) { 1253 input_report_key(dev, BTN_BACK, !hw.down); 1254 input_sync(dev); 1255 input_report_key(dev, BTN_BACK, hw.down); 1256 input_sync(dev); 1257 priv->scroll -= 4; 1258 } 1259 while (priv->scroll <= -4) { 1260 input_report_key(dev, BTN_FORWARD, !hw.up); 1261 input_sync(dev); 1262 input_report_key(dev, BTN_FORWARD, hw.up); 1263 input_sync(dev); 1264 priv->scroll += 4; 1265 } 1266 return; 1267 } 1268 1269 if (hw.z > 0 && hw.x > 1) { 1270 num_fingers = 1; 1271 finger_width = 5; 1272 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1273 switch (hw.w) { 1274 case 0 ... 1: 1275 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1276 num_fingers = hw.w + 2; 1277 break; 1278 case 2: 1279 if (SYN_MODEL_PEN(priv->model_id)) 1280 ; /* Nothing, treat a pen as a single finger */ 1281 break; 1282 case 4 ... 15: 1283 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1284 finger_width = hw.w; 1285 break; 1286 } 1287 } 1288 } else { 1289 num_fingers = 0; 1290 finger_width = 0; 1291 } 1292 1293 if (cr48_profile_sensor) { 1294 synaptics_profile_sensor_process(psmouse, &hw, num_fingers); 1295 return; 1296 } 1297 1298 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1299 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1300 num_fingers); 1301 1302 /* Post events 1303 * BTN_TOUCH has to be first as mousedev relies on it when doing 1304 * absolute -> relative conversion 1305 */ 1306 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1307 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1308 1309 if (num_fingers > 0) { 1310 input_report_abs(dev, ABS_X, hw.x); 1311 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1312 } 1313 input_report_abs(dev, ABS_PRESSURE, hw.z); 1314 1315 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1316 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1317 1318 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1319 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1320 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1321 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1322 } 1323 1324 synaptics_report_buttons(psmouse, &hw); 1325 1326 input_sync(dev); 1327 } 1328 1329 static int synaptics_validate_byte(struct psmouse *psmouse, 1330 int idx, unsigned char pkt_type) 1331 { 1332 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1333 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1334 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1335 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1336 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1337 const char *packet = psmouse->packet; 1338 1339 if (idx < 0 || idx > 4) 1340 return 0; 1341 1342 switch (pkt_type) { 1343 1344 case SYN_NEWABS: 1345 case SYN_NEWABS_RELAXED: 1346 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1347 1348 case SYN_NEWABS_STRICT: 1349 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1350 1351 case SYN_OLDABS: 1352 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1353 1354 default: 1355 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1356 return 0; 1357 } 1358 } 1359 1360 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1361 { 1362 int i; 1363 1364 for (i = 0; i < 5; i++) 1365 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1366 psmouse_info(psmouse, "using relaxed packet validation\n"); 1367 return SYN_NEWABS_RELAXED; 1368 } 1369 1370 return SYN_NEWABS_STRICT; 1371 } 1372 1373 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1374 { 1375 struct synaptics_data *priv = psmouse->private; 1376 1377 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1378 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1379 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1380 1381 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1382 synaptics_is_pt_packet(psmouse->packet)) { 1383 if (priv->pt_port) 1384 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1385 } else 1386 synaptics_process_packet(psmouse); 1387 1388 return PSMOUSE_FULL_PACKET; 1389 } 1390 1391 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1392 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1393 } 1394 1395 /***************************************************************************** 1396 * Driver initialization/cleanup functions 1397 ****************************************************************************/ 1398 static void set_abs_position_params(struct input_dev *dev, 1399 struct synaptics_data *priv, int x_code, 1400 int y_code) 1401 { 1402 int x_min = priv->x_min ?: XMIN_NOMINAL; 1403 int x_max = priv->x_max ?: XMAX_NOMINAL; 1404 int y_min = priv->y_min ?: YMIN_NOMINAL; 1405 int y_max = priv->y_max ?: YMAX_NOMINAL; 1406 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1407 SYN_REDUCED_FILTER_FUZZ : 0; 1408 1409 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1410 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1411 input_abs_set_res(dev, x_code, priv->x_res); 1412 input_abs_set_res(dev, y_code, priv->y_res); 1413 } 1414 1415 static void set_input_params(struct psmouse *psmouse, 1416 struct synaptics_data *priv) 1417 { 1418 struct input_dev *dev = psmouse->dev; 1419 int i; 1420 1421 /* Things that apply to both modes */ 1422 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1423 __set_bit(EV_KEY, dev->evbit); 1424 __set_bit(BTN_LEFT, dev->keybit); 1425 __set_bit(BTN_RIGHT, dev->keybit); 1426 1427 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1428 __set_bit(BTN_MIDDLE, dev->keybit); 1429 1430 if (!priv->absolute_mode) { 1431 /* Relative mode */ 1432 __set_bit(EV_REL, dev->evbit); 1433 __set_bit(REL_X, dev->relbit); 1434 __set_bit(REL_Y, dev->relbit); 1435 return; 1436 } 1437 1438 /* Absolute mode */ 1439 __set_bit(EV_ABS, dev->evbit); 1440 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1441 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1442 1443 if (cr48_profile_sensor) 1444 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1445 1446 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1447 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1448 ABS_MT_POSITION_Y); 1449 /* Image sensors can report per-contact pressure */ 1450 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1451 input_mt_init_slots(dev, 2, INPUT_MT_POINTER); 1452 1453 /* Image sensors can signal 4 and 5 finger clicks */ 1454 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1455 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1456 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1457 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1458 ABS_MT_POSITION_Y); 1459 /* 1460 * Profile sensor in CR-48 tracks contacts reasonably well, 1461 * other non-image sensors with AGM use semi-mt. 1462 */ 1463 input_mt_init_slots(dev, 2, 1464 INPUT_MT_POINTER | 1465 (cr48_profile_sensor ? 1466 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1467 } 1468 1469 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1470 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1471 1472 __set_bit(BTN_TOUCH, dev->keybit); 1473 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1474 1475 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1476 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1477 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1478 } 1479 1480 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1481 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1482 __set_bit(BTN_FORWARD, dev->keybit); 1483 __set_bit(BTN_BACK, dev->keybit); 1484 } 1485 1486 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1487 __set_bit(BTN_0 + i, dev->keybit); 1488 1489 __clear_bit(EV_REL, dev->evbit); 1490 __clear_bit(REL_X, dev->relbit); 1491 __clear_bit(REL_Y, dev->relbit); 1492 1493 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1494 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1495 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids)) 1496 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1497 /* Clickpads report only left button */ 1498 __clear_bit(BTN_RIGHT, dev->keybit); 1499 __clear_bit(BTN_MIDDLE, dev->keybit); 1500 } 1501 } 1502 1503 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1504 void *data, char *buf) 1505 { 1506 struct synaptics_data *priv = psmouse->private; 1507 1508 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1509 } 1510 1511 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1512 void *data, const char *buf, 1513 size_t len) 1514 { 1515 struct synaptics_data *priv = psmouse->private; 1516 unsigned int value; 1517 int err; 1518 1519 err = kstrtouint(buf, 10, &value); 1520 if (err) 1521 return err; 1522 1523 if (value > 1) 1524 return -EINVAL; 1525 1526 if (value == priv->disable_gesture) 1527 return len; 1528 1529 priv->disable_gesture = value; 1530 if (value) 1531 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1532 else 1533 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1534 1535 if (synaptics_mode_cmd(psmouse, priv->mode)) 1536 return -EIO; 1537 1538 return len; 1539 } 1540 1541 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1542 synaptics_show_disable_gesture, 1543 synaptics_set_disable_gesture); 1544 1545 static void synaptics_disconnect(struct psmouse *psmouse) 1546 { 1547 struct synaptics_data *priv = psmouse->private; 1548 1549 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1550 device_remove_file(&psmouse->ps2dev.serio->dev, 1551 &psmouse_attr_disable_gesture.dattr); 1552 1553 synaptics_reset(psmouse); 1554 kfree(priv); 1555 psmouse->private = NULL; 1556 } 1557 1558 static int synaptics_reconnect(struct psmouse *psmouse) 1559 { 1560 struct synaptics_data *priv = psmouse->private; 1561 struct synaptics_data old_priv = *priv; 1562 unsigned char param[2]; 1563 int retry = 0; 1564 int error; 1565 1566 do { 1567 psmouse_reset(psmouse); 1568 if (retry) { 1569 /* 1570 * On some boxes, right after resuming, the touchpad 1571 * needs some time to finish initializing (I assume 1572 * it needs time to calibrate) and start responding 1573 * to Synaptics-specific queries, so let's wait a 1574 * bit. 1575 */ 1576 ssleep(1); 1577 } 1578 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1579 error = synaptics_detect(psmouse, 0); 1580 } while (error && ++retry < 3); 1581 1582 if (error) 1583 return -1; 1584 1585 if (retry > 1) 1586 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1587 1588 if (synaptics_query_hardware(psmouse)) { 1589 psmouse_err(psmouse, "Unable to query device.\n"); 1590 return -1; 1591 } 1592 1593 if (synaptics_set_mode(psmouse)) { 1594 psmouse_err(psmouse, "Unable to initialize device.\n"); 1595 return -1; 1596 } 1597 1598 if (old_priv.identity != priv->identity || 1599 old_priv.model_id != priv->model_id || 1600 old_priv.capabilities != priv->capabilities || 1601 old_priv.ext_cap != priv->ext_cap) { 1602 psmouse_err(psmouse, 1603 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1604 old_priv.identity, priv->identity, 1605 old_priv.model_id, priv->model_id, 1606 old_priv.capabilities, priv->capabilities, 1607 old_priv.ext_cap, priv->ext_cap); 1608 return -1; 1609 } 1610 1611 return 0; 1612 } 1613 1614 static bool impaired_toshiba_kbc; 1615 1616 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1617 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1618 { 1619 /* Toshiba Satellite */ 1620 .matches = { 1621 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1622 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1623 }, 1624 }, 1625 { 1626 /* Toshiba Dynabook */ 1627 .matches = { 1628 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1629 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1630 }, 1631 }, 1632 { 1633 /* Toshiba Portege M300 */ 1634 .matches = { 1635 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1636 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1637 }, 1638 1639 }, 1640 { 1641 /* Toshiba Portege M300 */ 1642 .matches = { 1643 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1644 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1645 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1646 }, 1647 1648 }, 1649 #endif 1650 { } 1651 }; 1652 1653 static bool broken_olpc_ec; 1654 1655 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1656 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1657 { 1658 /* OLPC XO-1 or XO-1.5 */ 1659 .matches = { 1660 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1661 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1662 }, 1663 }, 1664 #endif 1665 { } 1666 }; 1667 1668 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1669 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1670 { 1671 /* Cr-48 Chromebook (Codename Mario) */ 1672 .matches = { 1673 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1674 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1675 }, 1676 }, 1677 #endif 1678 { } 1679 }; 1680 1681 void __init synaptics_module_init(void) 1682 { 1683 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1684 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1685 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1686 } 1687 1688 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1689 { 1690 struct synaptics_data *priv; 1691 int err = -1; 1692 1693 /* 1694 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1695 * packet spew overloads the EC such that key presses on the keyboard 1696 * are missed. Given that, don't even attempt to use Absolute mode. 1697 * Relative mode seems to work just fine. 1698 */ 1699 if (absolute_mode && broken_olpc_ec) { 1700 psmouse_info(psmouse, 1701 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1702 return -ENODEV; 1703 } 1704 1705 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1706 if (!priv) 1707 return -ENOMEM; 1708 1709 psmouse_reset(psmouse); 1710 1711 if (synaptics_query_hardware(psmouse)) { 1712 psmouse_err(psmouse, "Unable to query device.\n"); 1713 goto init_fail; 1714 } 1715 1716 priv->absolute_mode = absolute_mode; 1717 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1718 priv->disable_gesture = true; 1719 1720 if (synaptics_set_mode(psmouse)) { 1721 psmouse_err(psmouse, "Unable to initialize device.\n"); 1722 goto init_fail; 1723 } 1724 1725 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1726 1727 psmouse_info(psmouse, 1728 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1729 SYN_ID_MODEL(priv->identity), 1730 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1731 priv->model_id, 1732 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1733 priv->board_id, priv->firmware_id); 1734 1735 set_input_params(psmouse, priv); 1736 1737 /* 1738 * Encode touchpad model so that it can be used to set 1739 * input device->id.version and be visible to userspace. 1740 * Because version is __u16 we have to drop something. 1741 * Hardware info bits seem to be good candidates as they 1742 * are documented to be for Synaptics corp. internal use. 1743 */ 1744 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1745 (priv->model_id & 0x000000ff); 1746 1747 if (absolute_mode) { 1748 psmouse->protocol_handler = synaptics_process_byte; 1749 psmouse->pktsize = 6; 1750 } else { 1751 /* Relative mode follows standard PS/2 mouse protocol */ 1752 psmouse->protocol_handler = psmouse_process_byte; 1753 psmouse->pktsize = 3; 1754 } 1755 1756 psmouse->set_rate = synaptics_set_rate; 1757 psmouse->disconnect = synaptics_disconnect; 1758 psmouse->reconnect = synaptics_reconnect; 1759 psmouse->cleanup = synaptics_reset; 1760 /* Synaptics can usually stay in sync without extra help */ 1761 psmouse->resync_time = 0; 1762 1763 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1764 synaptics_pt_create(psmouse); 1765 1766 /* 1767 * Toshiba's KBC seems to have trouble handling data from 1768 * Synaptics at full rate. Switch to a lower rate (roughly 1769 * the same rate as a standard PS/2 mouse). 1770 */ 1771 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1772 psmouse_info(psmouse, 1773 "Toshiba %s detected, limiting rate to 40pps.\n", 1774 dmi_get_system_info(DMI_PRODUCT_NAME)); 1775 psmouse->rate = 40; 1776 } 1777 1778 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1779 err = device_create_file(&psmouse->ps2dev.serio->dev, 1780 &psmouse_attr_disable_gesture.dattr); 1781 if (err) { 1782 psmouse_err(psmouse, 1783 "Failed to create disable_gesture attribute (%d)", 1784 err); 1785 goto init_fail; 1786 } 1787 } 1788 1789 return 0; 1790 1791 init_fail: 1792 kfree(priv); 1793 return err; 1794 } 1795 1796 int synaptics_init(struct psmouse *psmouse) 1797 { 1798 return __synaptics_init(psmouse, true); 1799 } 1800 1801 int synaptics_init_relative(struct psmouse *psmouse) 1802 { 1803 return __synaptics_init(psmouse, false); 1804 } 1805 1806 bool synaptics_supported(void) 1807 { 1808 return true; 1809 } 1810 1811 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1812 1813 void __init synaptics_module_init(void) 1814 { 1815 } 1816 1817 int synaptics_init(struct psmouse *psmouse) 1818 { 1819 return -ENOSYS; 1820 } 1821 1822 bool synaptics_supported(void) 1823 { 1824 return false; 1825 } 1826 1827 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1828