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", "LEN0037", 139 "LEN0039", "LEN2002", "LEN2004", 140 NULL}, 141 1024, 5112, 2024, 4832 142 }, 143 { 144 (const char * const []){"LEN2001", NULL}, 145 1024, 5022, 2508, 4832 146 }, 147 { 148 (const char * const []){"LEN2006", NULL}, 149 1264, 5675, 1171, 4688 150 }, 151 { } 152 }; 153 154 /* This list has been kindly provided by Synaptics. */ 155 static const char * const topbuttonpad_pnp_ids[] = { 156 "LEN0017", 157 "LEN0018", 158 "LEN0019", 159 "LEN0023", 160 "LEN002A", 161 "LEN002B", 162 "LEN002C", 163 "LEN002D", 164 "LEN002E", 165 "LEN0033", /* Helix */ 166 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 167 "LEN0035", /* X240 */ 168 "LEN0036", /* T440 */ 169 "LEN0037", /* X1 Carbon 2nd */ 170 "LEN0038", 171 "LEN0039", /* T440s */ 172 "LEN0041", 173 "LEN0042", /* Yoga */ 174 "LEN0045", 175 "LEN0046", 176 "LEN0047", 177 "LEN0048", 178 "LEN0049", 179 "LEN2000", 180 "LEN2001", /* Edge E431 */ 181 "LEN2002", /* Edge E531 */ 182 "LEN2003", 183 "LEN2004", /* L440 */ 184 "LEN2005", 185 "LEN2006", 186 "LEN2007", 187 "LEN2008", 188 "LEN2009", 189 "LEN200A", 190 "LEN200B", 191 NULL 192 }; 193 194 /***************************************************************************** 195 * Synaptics communications functions 196 ****************************************************************************/ 197 198 /* 199 * Synaptics touchpads report the y coordinate from bottom to top, which is 200 * opposite from what userspace expects. 201 * This function is used to invert y before reporting. 202 */ 203 static int synaptics_invert_y(int y) 204 { 205 return YMAX_NOMINAL + YMIN_NOMINAL - y; 206 } 207 208 /* 209 * Send a command to the synpatics touchpad by special commands 210 */ 211 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 212 { 213 if (psmouse_sliced_command(psmouse, c)) 214 return -1; 215 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 216 return -1; 217 return 0; 218 } 219 220 /* 221 * Read the model-id bytes from the touchpad 222 * see also SYN_MODEL_* macros 223 */ 224 static int synaptics_model_id(struct psmouse *psmouse) 225 { 226 struct synaptics_data *priv = psmouse->private; 227 unsigned char mi[3]; 228 229 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 230 return -1; 231 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 232 return 0; 233 } 234 235 /* 236 * Read the board id from the touchpad 237 * The board id is encoded in the "QUERY MODES" response 238 */ 239 static int synaptics_board_id(struct psmouse *psmouse) 240 { 241 struct synaptics_data *priv = psmouse->private; 242 unsigned char bid[3]; 243 244 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 245 return -1; 246 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 247 return 0; 248 } 249 250 /* 251 * Read the firmware id from the touchpad 252 */ 253 static int synaptics_firmware_id(struct psmouse *psmouse) 254 { 255 struct synaptics_data *priv = psmouse->private; 256 unsigned char fwid[3]; 257 258 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 259 return -1; 260 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 261 return 0; 262 } 263 264 /* 265 * Read the capability-bits from the touchpad 266 * see also the SYN_CAP_* macros 267 */ 268 static int synaptics_capability(struct psmouse *psmouse) 269 { 270 struct synaptics_data *priv = psmouse->private; 271 unsigned char cap[3]; 272 273 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 274 return -1; 275 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 276 priv->ext_cap = priv->ext_cap_0c = 0; 277 278 /* 279 * Older firmwares had submodel ID fixed to 0x47 280 */ 281 if (SYN_ID_FULL(priv->identity) < 0x705 && 282 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 283 return -1; 284 } 285 286 /* 287 * Unless capExtended is set the rest of the flags should be ignored 288 */ 289 if (!SYN_CAP_EXTENDED(priv->capabilities)) 290 priv->capabilities = 0; 291 292 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 293 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 294 psmouse_warn(psmouse, 295 "device claims to have extended capabilities, but I'm not able to read them.\n"); 296 } else { 297 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 298 299 /* 300 * if nExtBtn is greater than 8 it should be considered 301 * invalid and treated as 0 302 */ 303 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 304 priv->ext_cap &= 0xff0fff; 305 } 306 } 307 308 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 309 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 310 psmouse_warn(psmouse, 311 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 312 } else { 313 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 314 } 315 } 316 317 return 0; 318 } 319 320 /* 321 * Identify Touchpad 322 * See also the SYN_ID_* macros 323 */ 324 static int synaptics_identify(struct psmouse *psmouse) 325 { 326 struct synaptics_data *priv = psmouse->private; 327 unsigned char id[3]; 328 329 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 330 return -1; 331 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 332 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 333 return 0; 334 return -1; 335 } 336 337 /* 338 * Read touchpad resolution and maximum reported coordinates 339 * Resolution is left zero if touchpad does not support the query 340 */ 341 342 static int synaptics_resolution(struct psmouse *psmouse) 343 { 344 struct synaptics_data *priv = psmouse->private; 345 unsigned char resp[3]; 346 int i; 347 348 if (SYN_ID_MAJOR(priv->identity) < 4) 349 return 0; 350 351 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 352 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 353 priv->x_res = resp[0]; /* x resolution in units/mm */ 354 priv->y_res = resp[2]; /* y resolution in units/mm */ 355 } 356 } 357 358 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 359 if (psmouse_matches_pnp_id(psmouse, 360 min_max_pnpid_table[i].pnp_ids)) { 361 priv->x_min = min_max_pnpid_table[i].x_min; 362 priv->x_max = min_max_pnpid_table[i].x_max; 363 priv->y_min = min_max_pnpid_table[i].y_min; 364 priv->y_max = min_max_pnpid_table[i].y_max; 365 return 0; 366 } 367 } 368 369 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 370 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 371 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 372 psmouse_warn(psmouse, 373 "device claims to have max coordinates query, but I'm not able to read it.\n"); 374 } else { 375 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 376 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 377 } 378 } 379 380 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 381 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 382 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 383 psmouse_warn(psmouse, 384 "device claims to have min coordinates query, but I'm not able to read it.\n"); 385 } else { 386 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 387 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 388 } 389 } 390 391 return 0; 392 } 393 394 static int synaptics_query_hardware(struct psmouse *psmouse) 395 { 396 if (synaptics_identify(psmouse)) 397 return -1; 398 if (synaptics_model_id(psmouse)) 399 return -1; 400 if (synaptics_firmware_id(psmouse)) 401 return -1; 402 if (synaptics_board_id(psmouse)) 403 return -1; 404 if (synaptics_capability(psmouse)) 405 return -1; 406 if (synaptics_resolution(psmouse)) 407 return -1; 408 409 return 0; 410 } 411 412 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 413 { 414 static unsigned char param = 0xc8; 415 struct synaptics_data *priv = psmouse->private; 416 417 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 418 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 419 return 0; 420 421 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 422 return -1; 423 424 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 425 return -1; 426 427 /* Advanced gesture mode also sends multi finger data */ 428 priv->capabilities |= BIT(1); 429 430 return 0; 431 } 432 433 static int synaptics_set_mode(struct psmouse *psmouse) 434 { 435 struct synaptics_data *priv = psmouse->private; 436 437 priv->mode = 0; 438 if (priv->absolute_mode) 439 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 440 if (priv->disable_gesture) 441 priv->mode |= SYN_BIT_DISABLE_GESTURE; 442 if (psmouse->rate >= 80) 443 priv->mode |= SYN_BIT_HIGH_RATE; 444 if (SYN_CAP_EXTENDED(priv->capabilities)) 445 priv->mode |= SYN_BIT_W_MODE; 446 447 if (synaptics_mode_cmd(psmouse, priv->mode)) 448 return -1; 449 450 if (priv->absolute_mode && 451 synaptics_set_advanced_gesture_mode(psmouse)) { 452 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 453 return -1; 454 } 455 456 return 0; 457 } 458 459 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 460 { 461 struct synaptics_data *priv = psmouse->private; 462 463 if (rate >= 80) { 464 priv->mode |= SYN_BIT_HIGH_RATE; 465 psmouse->rate = 80; 466 } else { 467 priv->mode &= ~SYN_BIT_HIGH_RATE; 468 psmouse->rate = 40; 469 } 470 471 synaptics_mode_cmd(psmouse, priv->mode); 472 } 473 474 /***************************************************************************** 475 * Synaptics pass-through PS/2 port support 476 ****************************************************************************/ 477 static int synaptics_pt_write(struct serio *serio, unsigned char c) 478 { 479 struct psmouse *parent = serio_get_drvdata(serio->parent); 480 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 481 482 if (psmouse_sliced_command(parent, c)) 483 return -1; 484 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 485 return -1; 486 return 0; 487 } 488 489 static int synaptics_pt_start(struct serio *serio) 490 { 491 struct psmouse *parent = serio_get_drvdata(serio->parent); 492 struct synaptics_data *priv = parent->private; 493 494 serio_pause_rx(parent->ps2dev.serio); 495 priv->pt_port = serio; 496 serio_continue_rx(parent->ps2dev.serio); 497 498 return 0; 499 } 500 501 static void synaptics_pt_stop(struct serio *serio) 502 { 503 struct psmouse *parent = serio_get_drvdata(serio->parent); 504 struct synaptics_data *priv = parent->private; 505 506 serio_pause_rx(parent->ps2dev.serio); 507 priv->pt_port = NULL; 508 serio_continue_rx(parent->ps2dev.serio); 509 } 510 511 static int synaptics_is_pt_packet(unsigned char *buf) 512 { 513 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 514 } 515 516 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 517 { 518 struct psmouse *child = serio_get_drvdata(ptport); 519 520 if (child && child->state == PSMOUSE_ACTIVATED) { 521 serio_interrupt(ptport, packet[1], 0); 522 serio_interrupt(ptport, packet[4], 0); 523 serio_interrupt(ptport, packet[5], 0); 524 if (child->pktsize == 4) 525 serio_interrupt(ptport, packet[2], 0); 526 } else 527 serio_interrupt(ptport, packet[1], 0); 528 } 529 530 static void synaptics_pt_activate(struct psmouse *psmouse) 531 { 532 struct synaptics_data *priv = psmouse->private; 533 struct psmouse *child = serio_get_drvdata(priv->pt_port); 534 535 /* adjust the touchpad to child's choice of protocol */ 536 if (child) { 537 if (child->pktsize == 4) 538 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 539 else 540 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 541 542 if (synaptics_mode_cmd(psmouse, priv->mode)) 543 psmouse_warn(psmouse, 544 "failed to switch guest protocol\n"); 545 } 546 } 547 548 static void synaptics_pt_create(struct psmouse *psmouse) 549 { 550 struct serio *serio; 551 552 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 553 if (!serio) { 554 psmouse_err(psmouse, 555 "not enough memory for pass-through port\n"); 556 return; 557 } 558 559 serio->id.type = SERIO_PS_PSTHRU; 560 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 561 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 562 serio->write = synaptics_pt_write; 563 serio->start = synaptics_pt_start; 564 serio->stop = synaptics_pt_stop; 565 serio->parent = psmouse->ps2dev.serio; 566 567 psmouse->pt_activate = synaptics_pt_activate; 568 569 psmouse_info(psmouse, "serio: %s port at %s\n", 570 serio->name, psmouse->phys); 571 serio_register_port(serio); 572 } 573 574 /***************************************************************************** 575 * Functions to interpret the absolute mode packets 576 ****************************************************************************/ 577 578 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 579 int sgm, int agm) 580 { 581 state->count = count; 582 state->sgm = sgm; 583 state->agm = agm; 584 } 585 586 static void synaptics_parse_agm(const unsigned char buf[], 587 struct synaptics_data *priv, 588 struct synaptics_hw_state *hw) 589 { 590 struct synaptics_hw_state *agm = &priv->agm; 591 int agm_packet_type; 592 593 agm_packet_type = (buf[5] & 0x30) >> 4; 594 switch (agm_packet_type) { 595 case 1: 596 /* Gesture packet: (x, y, z) half resolution */ 597 agm->w = hw->w; 598 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 599 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 600 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 601 break; 602 603 case 2: 604 /* AGM-CONTACT packet: (count, sgm, agm) */ 605 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 606 break; 607 608 default: 609 break; 610 } 611 612 /* Record that at least one AGM has been received since last SGM */ 613 priv->agm_pending = true; 614 } 615 616 static bool is_forcepad; 617 618 static int synaptics_parse_hw_state(const unsigned char buf[], 619 struct synaptics_data *priv, 620 struct synaptics_hw_state *hw) 621 { 622 memset(hw, 0, sizeof(struct synaptics_hw_state)); 623 624 if (SYN_MODEL_NEWABS(priv->model_id)) { 625 hw->w = (((buf[0] & 0x30) >> 2) | 626 ((buf[0] & 0x04) >> 1) | 627 ((buf[3] & 0x04) >> 2)); 628 629 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 630 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 631 hw->w == 2) { 632 synaptics_parse_agm(buf, priv, hw); 633 return 1; 634 } 635 636 hw->x = (((buf[3] & 0x10) << 8) | 637 ((buf[1] & 0x0f) << 8) | 638 buf[4]); 639 hw->y = (((buf[3] & 0x20) << 7) | 640 ((buf[1] & 0xf0) << 4) | 641 buf[5]); 642 hw->z = buf[2]; 643 644 hw->left = (buf[0] & 0x01) ? 1 : 0; 645 hw->right = (buf[0] & 0x02) ? 1 : 0; 646 647 if (is_forcepad) { 648 /* 649 * ForcePads, like Clickpads, use middle button 650 * bits to report primary button clicks. 651 * Unfortunately they report primary button not 652 * only when user presses on the pad above certain 653 * threshold, but also when there are more than one 654 * finger on the touchpad, which interferes with 655 * out multi-finger gestures. 656 */ 657 if (hw->z == 0) { 658 /* No contacts */ 659 priv->press = priv->report_press = false; 660 } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { 661 /* 662 * Single-finger touch with pressure above 663 * the threshold. If pressure stays long 664 * enough, we'll start reporting primary 665 * button. We rely on the device continuing 666 * sending data even if finger does not 667 * move. 668 */ 669 if (!priv->press) { 670 priv->press_start = jiffies; 671 priv->press = true; 672 } else if (time_after(jiffies, 673 priv->press_start + 674 msecs_to_jiffies(50))) { 675 priv->report_press = true; 676 } 677 } else { 678 priv->press = false; 679 } 680 681 hw->left = priv->report_press; 682 683 } else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 684 /* 685 * Clickpad's button is transmitted as middle button, 686 * however, since it is primary button, we will report 687 * it as BTN_LEFT. 688 */ 689 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 690 691 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 692 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 693 if (hw->w == 2) 694 hw->scroll = (signed char)(buf[1]); 695 } 696 697 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 698 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 699 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 700 } 701 702 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 703 ((buf[0] ^ buf[3]) & 0x02)) { 704 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 705 default: 706 /* 707 * if nExtBtn is greater than 8 it should be 708 * considered invalid and treated as 0 709 */ 710 break; 711 case 8: 712 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 713 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 714 case 6: 715 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 716 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 717 case 4: 718 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 719 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 720 case 2: 721 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 722 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 723 } 724 } 725 } else { 726 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 727 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 728 729 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 730 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 731 732 hw->left = (buf[0] & 0x01) ? 1 : 0; 733 hw->right = (buf[0] & 0x02) ? 1 : 0; 734 } 735 736 /* 737 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 738 * is used by some firmware to indicate a finger at the edge of 739 * the touchpad whose precise position cannot be determined, so 740 * convert these values to the maximum axis value. 741 */ 742 if (hw->x > X_MAX_POSITIVE) 743 hw->x -= 1 << ABS_POS_BITS; 744 else if (hw->x == X_MAX_POSITIVE) 745 hw->x = XMAX; 746 747 if (hw->y > Y_MAX_POSITIVE) 748 hw->y -= 1 << ABS_POS_BITS; 749 else if (hw->y == Y_MAX_POSITIVE) 750 hw->y = YMAX; 751 752 return 0; 753 } 754 755 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 756 bool active, int x, int y) 757 { 758 input_mt_slot(dev, slot); 759 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 760 if (active) { 761 input_report_abs(dev, ABS_MT_POSITION_X, x); 762 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 763 } 764 } 765 766 static void synaptics_report_semi_mt_data(struct input_dev *dev, 767 const struct synaptics_hw_state *a, 768 const struct synaptics_hw_state *b, 769 int num_fingers) 770 { 771 if (num_fingers >= 2) { 772 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 773 min(a->y, b->y)); 774 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 775 max(a->y, b->y)); 776 } else if (num_fingers == 1) { 777 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 778 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 779 } else { 780 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 781 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 782 } 783 } 784 785 static void synaptics_report_buttons(struct psmouse *psmouse, 786 const struct synaptics_hw_state *hw) 787 { 788 struct input_dev *dev = psmouse->dev; 789 struct synaptics_data *priv = psmouse->private; 790 int i; 791 792 input_report_key(dev, BTN_LEFT, hw->left); 793 input_report_key(dev, BTN_RIGHT, hw->right); 794 795 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 796 input_report_key(dev, BTN_MIDDLE, hw->middle); 797 798 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 799 input_report_key(dev, BTN_FORWARD, hw->up); 800 input_report_key(dev, BTN_BACK, hw->down); 801 } 802 803 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 804 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 805 } 806 807 static void synaptics_report_slot(struct input_dev *dev, int slot, 808 const struct synaptics_hw_state *hw) 809 { 810 input_mt_slot(dev, slot); 811 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 812 if (!hw) 813 return; 814 815 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 816 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 817 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 818 } 819 820 static void synaptics_report_mt_data(struct psmouse *psmouse, 821 struct synaptics_mt_state *mt_state, 822 const struct synaptics_hw_state *sgm) 823 { 824 struct input_dev *dev = psmouse->dev; 825 struct synaptics_data *priv = psmouse->private; 826 struct synaptics_hw_state *agm = &priv->agm; 827 struct synaptics_mt_state *old = &priv->mt_state; 828 829 switch (mt_state->count) { 830 case 0: 831 synaptics_report_slot(dev, 0, NULL); 832 synaptics_report_slot(dev, 1, NULL); 833 break; 834 case 1: 835 if (mt_state->sgm == -1) { 836 synaptics_report_slot(dev, 0, NULL); 837 synaptics_report_slot(dev, 1, NULL); 838 } else if (mt_state->sgm == 0) { 839 synaptics_report_slot(dev, 0, sgm); 840 synaptics_report_slot(dev, 1, NULL); 841 } else { 842 synaptics_report_slot(dev, 0, NULL); 843 synaptics_report_slot(dev, 1, sgm); 844 } 845 break; 846 default: 847 /* 848 * If the finger slot contained in SGM is valid, and either 849 * hasn't changed, or is new, or the old SGM has now moved to 850 * AGM, then report SGM in MTB slot 0. 851 * Otherwise, empty MTB slot 0. 852 */ 853 if (mt_state->sgm != -1 && 854 (mt_state->sgm == old->sgm || 855 old->sgm == -1 || mt_state->agm == old->sgm)) 856 synaptics_report_slot(dev, 0, sgm); 857 else 858 synaptics_report_slot(dev, 0, NULL); 859 860 /* 861 * If the finger slot contained in AGM is valid, and either 862 * hasn't changed, or is new, then report AGM in MTB slot 1. 863 * Otherwise, empty MTB slot 1. 864 * 865 * However, in the case where the AGM is new, make sure that 866 * that it is either the same as the old SGM, or there was no 867 * SGM. 868 * 869 * Otherwise, if the SGM was just 1, and the new AGM is 2, then 870 * the new AGM will keep the old SGM's tracking ID, which can 871 * cause apparent drumroll. This happens if in the following 872 * valid finger sequence: 873 * 874 * Action SGM AGM (MTB slot:Contact) 875 * 1. Touch contact 0 (0:0) 876 * 2. Touch contact 1 (0:0, 1:1) 877 * 3. Lift contact 0 (1:1) 878 * 4. Touch contacts 2,3 (0:2, 1:3) 879 * 880 * In step 4, contact 3, in AGM must not be given the same 881 * tracking ID as contact 1 had in step 3. To avoid this, 882 * the first agm with contact 3 is dropped and slot 1 is 883 * invalidated (tracking ID = -1). 884 */ 885 if (mt_state->agm != -1 && 886 (mt_state->agm == old->agm || 887 (old->agm == -1 && 888 (old->sgm == -1 || mt_state->agm == old->sgm)))) 889 synaptics_report_slot(dev, 1, agm); 890 else 891 synaptics_report_slot(dev, 1, NULL); 892 break; 893 } 894 895 /* Don't use active slot count to generate BTN_TOOL events. */ 896 input_mt_report_pointer_emulation(dev, false); 897 898 /* Send the number of fingers reported by touchpad itself. */ 899 input_mt_report_finger_count(dev, mt_state->count); 900 901 synaptics_report_buttons(psmouse, sgm); 902 903 input_sync(dev); 904 } 905 906 /* Handle case where mt_state->count = 0 */ 907 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 908 struct synaptics_mt_state *mt_state) 909 { 910 synaptics_mt_state_set(mt_state, 0, -1, -1); 911 priv->mt_state_lost = false; 912 } 913 914 /* Handle case where mt_state->count = 1 */ 915 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 916 struct synaptics_mt_state *mt_state) 917 { 918 struct synaptics_hw_state *agm = &priv->agm; 919 struct synaptics_mt_state *old = &priv->mt_state; 920 921 /* 922 * If the last AGM was (0,0,0), and there is only one finger left, 923 * then we absolutely know that SGM contains slot 0, and all other 924 * fingers have been removed. 925 */ 926 if (priv->agm_pending && agm->z == 0) { 927 synaptics_mt_state_set(mt_state, 1, 0, -1); 928 priv->mt_state_lost = false; 929 return; 930 } 931 932 switch (old->count) { 933 case 0: 934 synaptics_mt_state_set(mt_state, 1, 0, -1); 935 break; 936 case 1: 937 /* 938 * If mt_state_lost, then the previous transition was 3->1, 939 * and SGM now contains either slot 0 or 1, but we don't know 940 * which. So, we just assume that the SGM now contains slot 1. 941 * 942 * If pending AGM and either: 943 * (a) the previous SGM slot contains slot 0, or 944 * (b) there was no SGM slot 945 * then, the SGM now contains slot 1 946 * 947 * Case (a) happens with very rapid "drum roll" gestures, where 948 * slot 0 finger is lifted and a new slot 1 finger touches 949 * within one reporting interval. 950 * 951 * Case (b) happens if initially two or more fingers tap 952 * briefly, and all but one lift before the end of the first 953 * reporting interval. 954 * 955 * (In both these cases, slot 0 will becomes empty, so SGM 956 * contains slot 1 with the new finger) 957 * 958 * Else, if there was no previous SGM, it now contains slot 0. 959 * 960 * Otherwise, SGM still contains the same slot. 961 */ 962 if (priv->mt_state_lost || 963 (priv->agm_pending && old->sgm <= 0)) 964 synaptics_mt_state_set(mt_state, 1, 1, -1); 965 else if (old->sgm == -1) 966 synaptics_mt_state_set(mt_state, 1, 0, -1); 967 break; 968 case 2: 969 /* 970 * If mt_state_lost, we don't know which finger SGM contains. 971 * 972 * So, report 1 finger, but with both slots empty. 973 * We will use slot 1 on subsequent 1->1 974 */ 975 if (priv->mt_state_lost) { 976 synaptics_mt_state_set(mt_state, 1, -1, -1); 977 break; 978 } 979 /* 980 * Since the last AGM was NOT (0,0,0), it was the finger in 981 * slot 0 that has been removed. 982 * So, SGM now contains previous AGM's slot, and AGM is now 983 * empty. 984 */ 985 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 986 break; 987 case 3: 988 /* 989 * Since last AGM was not (0,0,0), we don't know which finger 990 * is left. 991 * 992 * So, report 1 finger, but with both slots empty. 993 * We will use slot 1 on subsequent 1->1 994 */ 995 synaptics_mt_state_set(mt_state, 1, -1, -1); 996 priv->mt_state_lost = true; 997 break; 998 case 4: 999 case 5: 1000 /* mt_state was updated by AGM-CONTACT packet */ 1001 break; 1002 } 1003 } 1004 1005 /* Handle case where mt_state->count = 2 */ 1006 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 1007 struct synaptics_mt_state *mt_state) 1008 { 1009 struct synaptics_mt_state *old = &priv->mt_state; 1010 1011 switch (old->count) { 1012 case 0: 1013 synaptics_mt_state_set(mt_state, 2, 0, 1); 1014 break; 1015 case 1: 1016 /* 1017 * If previous SGM contained slot 1 or higher, SGM now contains 1018 * slot 0 (the newly touching finger) and AGM contains SGM's 1019 * previous slot. 1020 * 1021 * Otherwise, SGM still contains slot 0 and AGM now contains 1022 * slot 1. 1023 */ 1024 if (old->sgm >= 1) 1025 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 1026 else 1027 synaptics_mt_state_set(mt_state, 2, 0, 1); 1028 break; 1029 case 2: 1030 /* 1031 * If mt_state_lost, SGM now contains either finger 1 or 2, but 1032 * we don't know which. 1033 * So, we just assume that the SGM contains slot 0 and AGM 1. 1034 */ 1035 if (priv->mt_state_lost) 1036 synaptics_mt_state_set(mt_state, 2, 0, 1); 1037 /* 1038 * Otherwise, use the same mt_state, since it either hasn't 1039 * changed, or was updated by a recently received AGM-CONTACT 1040 * packet. 1041 */ 1042 break; 1043 case 3: 1044 /* 1045 * 3->2 transitions have two unsolvable problems: 1046 * 1) no indication is given which finger was removed 1047 * 2) no way to tell if agm packet was for finger 3 1048 * before 3->2, or finger 2 after 3->2. 1049 * 1050 * So, report 2 fingers, but empty all slots. 1051 * We will guess slots [0,1] on subsequent 2->2. 1052 */ 1053 synaptics_mt_state_set(mt_state, 2, -1, -1); 1054 priv->mt_state_lost = true; 1055 break; 1056 case 4: 1057 case 5: 1058 /* mt_state was updated by AGM-CONTACT packet */ 1059 break; 1060 } 1061 } 1062 1063 /* Handle case where mt_state->count = 3 */ 1064 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 1065 struct synaptics_mt_state *mt_state) 1066 { 1067 struct synaptics_mt_state *old = &priv->mt_state; 1068 1069 switch (old->count) { 1070 case 0: 1071 synaptics_mt_state_set(mt_state, 3, 0, 2); 1072 break; 1073 case 1: 1074 /* 1075 * If previous SGM contained slot 2 or higher, SGM now contains 1076 * slot 0 (one of the newly touching fingers) and AGM contains 1077 * SGM's previous slot. 1078 * 1079 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 1080 */ 1081 if (old->sgm >= 2) 1082 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 1083 else 1084 synaptics_mt_state_set(mt_state, 3, 0, 2); 1085 break; 1086 case 2: 1087 /* 1088 * If the AGM previously contained slot 3 or higher, then the 1089 * newly touching finger is in the lowest available slot. 1090 * 1091 * If SGM was previously 1 or higher, then the new SGM is 1092 * now slot 0 (with a new finger), otherwise, the new finger 1093 * is now in a hidden slot between 0 and AGM's slot. 1094 * 1095 * In all such cases, the SGM now contains slot 0, and the AGM 1096 * continues to contain the same slot as before. 1097 */ 1098 if (old->agm >= 3) { 1099 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 1100 break; 1101 } 1102 1103 /* 1104 * After some 3->1 and all 3->2 transitions, we lose track 1105 * of which slot is reported by SGM and AGM. 1106 * 1107 * For 2->3 in this state, report 3 fingers, but empty all 1108 * slots, and we will guess (0,2) on a subsequent 0->3. 1109 * 1110 * To userspace, the resulting transition will look like: 1111 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 1112 */ 1113 if (priv->mt_state_lost) { 1114 synaptics_mt_state_set(mt_state, 3, -1, -1); 1115 break; 1116 } 1117 1118 /* 1119 * If the (SGM,AGM) really previously contained slots (0, 1), 1120 * then we cannot know what slot was just reported by the AGM, 1121 * because the 2->3 transition can occur either before or after 1122 * the AGM packet. Thus, this most recent AGM could contain 1123 * either the same old slot 1 or the new slot 2. 1124 * Subsequent AGMs will be reporting slot 2. 1125 * 1126 * To userspace, the resulting transition will look like: 1127 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 1128 */ 1129 synaptics_mt_state_set(mt_state, 3, 0, -1); 1130 break; 1131 case 3: 1132 /* 1133 * If, for whatever reason, the previous agm was invalid, 1134 * Assume SGM now contains slot 0, AGM now contains slot 2. 1135 */ 1136 if (old->agm <= 2) 1137 synaptics_mt_state_set(mt_state, 3, 0, 2); 1138 /* 1139 * mt_state either hasn't changed, or was updated by a recently 1140 * received AGM-CONTACT packet. 1141 */ 1142 break; 1143 1144 case 4: 1145 case 5: 1146 /* mt_state was updated by AGM-CONTACT packet */ 1147 break; 1148 } 1149 } 1150 1151 /* Handle case where mt_state->count = 4, or = 5 */ 1152 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 1153 struct synaptics_mt_state *mt_state) 1154 { 1155 /* mt_state was updated correctly by AGM-CONTACT packet */ 1156 priv->mt_state_lost = false; 1157 } 1158 1159 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1160 struct synaptics_hw_state *sgm) 1161 { 1162 struct synaptics_data *priv = psmouse->private; 1163 struct synaptics_hw_state *agm = &priv->agm; 1164 struct synaptics_mt_state mt_state; 1165 1166 /* Initialize using current mt_state (as updated by last agm) */ 1167 mt_state = agm->mt_state; 1168 1169 /* 1170 * Update mt_state using the new finger count and current mt_state. 1171 */ 1172 if (sgm->z == 0) 1173 synaptics_image_sensor_0f(priv, &mt_state); 1174 else if (sgm->w >= 4) 1175 synaptics_image_sensor_1f(priv, &mt_state); 1176 else if (sgm->w == 0) 1177 synaptics_image_sensor_2f(priv, &mt_state); 1178 else if (sgm->w == 1 && mt_state.count <= 3) 1179 synaptics_image_sensor_3f(priv, &mt_state); 1180 else 1181 synaptics_image_sensor_45f(priv, &mt_state); 1182 1183 /* Send resulting input events to user space */ 1184 synaptics_report_mt_data(psmouse, &mt_state, sgm); 1185 1186 /* Store updated mt_state */ 1187 priv->mt_state = agm->mt_state = mt_state; 1188 priv->agm_pending = false; 1189 } 1190 1191 static void synaptics_profile_sensor_process(struct psmouse *psmouse, 1192 struct synaptics_hw_state *sgm, 1193 int num_fingers) 1194 { 1195 struct input_dev *dev = psmouse->dev; 1196 struct synaptics_data *priv = psmouse->private; 1197 struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; 1198 struct input_mt_pos pos[2]; 1199 int slot[2], nsemi, i; 1200 1201 nsemi = clamp_val(num_fingers, 0, 2); 1202 1203 for (i = 0; i < nsemi; i++) { 1204 pos[i].x = hw[i]->x; 1205 pos[i].y = synaptics_invert_y(hw[i]->y); 1206 } 1207 1208 input_mt_assign_slots(dev, slot, pos, nsemi); 1209 1210 for (i = 0; i < nsemi; i++) { 1211 input_mt_slot(dev, slot[i]); 1212 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 1213 input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); 1214 input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); 1215 input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); 1216 } 1217 1218 input_mt_drop_unused(dev); 1219 input_mt_report_pointer_emulation(dev, false); 1220 input_mt_report_finger_count(dev, num_fingers); 1221 1222 synaptics_report_buttons(psmouse, sgm); 1223 1224 input_sync(dev); 1225 } 1226 1227 /* 1228 * called for each full received packet from the touchpad 1229 */ 1230 static void synaptics_process_packet(struct psmouse *psmouse) 1231 { 1232 struct input_dev *dev = psmouse->dev; 1233 struct synaptics_data *priv = psmouse->private; 1234 struct synaptics_hw_state hw; 1235 int num_fingers; 1236 int finger_width; 1237 1238 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1239 return; 1240 1241 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1242 synaptics_image_sensor_process(psmouse, &hw); 1243 return; 1244 } 1245 1246 if (hw.scroll) { 1247 priv->scroll += hw.scroll; 1248 1249 while (priv->scroll >= 4) { 1250 input_report_key(dev, BTN_BACK, !hw.down); 1251 input_sync(dev); 1252 input_report_key(dev, BTN_BACK, hw.down); 1253 input_sync(dev); 1254 priv->scroll -= 4; 1255 } 1256 while (priv->scroll <= -4) { 1257 input_report_key(dev, BTN_FORWARD, !hw.up); 1258 input_sync(dev); 1259 input_report_key(dev, BTN_FORWARD, hw.up); 1260 input_sync(dev); 1261 priv->scroll += 4; 1262 } 1263 return; 1264 } 1265 1266 if (hw.z > 0 && hw.x > 1) { 1267 num_fingers = 1; 1268 finger_width = 5; 1269 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1270 switch (hw.w) { 1271 case 0 ... 1: 1272 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1273 num_fingers = hw.w + 2; 1274 break; 1275 case 2: 1276 if (SYN_MODEL_PEN(priv->model_id)) 1277 ; /* Nothing, treat a pen as a single finger */ 1278 break; 1279 case 4 ... 15: 1280 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1281 finger_width = hw.w; 1282 break; 1283 } 1284 } 1285 } else { 1286 num_fingers = 0; 1287 finger_width = 0; 1288 } 1289 1290 if (cr48_profile_sensor) { 1291 synaptics_profile_sensor_process(psmouse, &hw, num_fingers); 1292 return; 1293 } 1294 1295 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1296 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1297 num_fingers); 1298 1299 /* Post events 1300 * BTN_TOUCH has to be first as mousedev relies on it when doing 1301 * absolute -> relative conversion 1302 */ 1303 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1304 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1305 1306 if (num_fingers > 0) { 1307 input_report_abs(dev, ABS_X, hw.x); 1308 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1309 } 1310 input_report_abs(dev, ABS_PRESSURE, hw.z); 1311 1312 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1313 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1314 1315 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1316 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1317 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1318 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1319 } 1320 1321 synaptics_report_buttons(psmouse, &hw); 1322 1323 input_sync(dev); 1324 } 1325 1326 static int synaptics_validate_byte(struct psmouse *psmouse, 1327 int idx, unsigned char pkt_type) 1328 { 1329 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1330 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1331 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1332 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1333 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1334 const char *packet = psmouse->packet; 1335 1336 if (idx < 0 || idx > 4) 1337 return 0; 1338 1339 switch (pkt_type) { 1340 1341 case SYN_NEWABS: 1342 case SYN_NEWABS_RELAXED: 1343 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1344 1345 case SYN_NEWABS_STRICT: 1346 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1347 1348 case SYN_OLDABS: 1349 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1350 1351 default: 1352 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1353 return 0; 1354 } 1355 } 1356 1357 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1358 { 1359 int i; 1360 1361 for (i = 0; i < 5; i++) 1362 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1363 psmouse_info(psmouse, "using relaxed packet validation\n"); 1364 return SYN_NEWABS_RELAXED; 1365 } 1366 1367 return SYN_NEWABS_STRICT; 1368 } 1369 1370 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1371 { 1372 struct synaptics_data *priv = psmouse->private; 1373 1374 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1375 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1376 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1377 1378 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1379 synaptics_is_pt_packet(psmouse->packet)) { 1380 if (priv->pt_port) 1381 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1382 } else 1383 synaptics_process_packet(psmouse); 1384 1385 return PSMOUSE_FULL_PACKET; 1386 } 1387 1388 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1389 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1390 } 1391 1392 /***************************************************************************** 1393 * Driver initialization/cleanup functions 1394 ****************************************************************************/ 1395 static void set_abs_position_params(struct input_dev *dev, 1396 struct synaptics_data *priv, int x_code, 1397 int y_code) 1398 { 1399 int x_min = priv->x_min ?: XMIN_NOMINAL; 1400 int x_max = priv->x_max ?: XMAX_NOMINAL; 1401 int y_min = priv->y_min ?: YMIN_NOMINAL; 1402 int y_max = priv->y_max ?: YMAX_NOMINAL; 1403 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1404 SYN_REDUCED_FILTER_FUZZ : 0; 1405 1406 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1407 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1408 input_abs_set_res(dev, x_code, priv->x_res); 1409 input_abs_set_res(dev, y_code, priv->y_res); 1410 } 1411 1412 static void set_input_params(struct psmouse *psmouse, 1413 struct synaptics_data *priv) 1414 { 1415 struct input_dev *dev = psmouse->dev; 1416 int i; 1417 1418 /* Things that apply to both modes */ 1419 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1420 __set_bit(EV_KEY, dev->evbit); 1421 __set_bit(BTN_LEFT, dev->keybit); 1422 __set_bit(BTN_RIGHT, dev->keybit); 1423 1424 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1425 __set_bit(BTN_MIDDLE, dev->keybit); 1426 1427 if (!priv->absolute_mode) { 1428 /* Relative mode */ 1429 __set_bit(EV_REL, dev->evbit); 1430 __set_bit(REL_X, dev->relbit); 1431 __set_bit(REL_Y, dev->relbit); 1432 return; 1433 } 1434 1435 /* Absolute mode */ 1436 __set_bit(EV_ABS, dev->evbit); 1437 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1438 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1439 1440 if (cr48_profile_sensor) 1441 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1442 1443 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1444 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1445 ABS_MT_POSITION_Y); 1446 /* Image sensors can report per-contact pressure */ 1447 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1448 input_mt_init_slots(dev, 2, INPUT_MT_POINTER); 1449 1450 /* Image sensors can signal 4 and 5 finger clicks */ 1451 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1452 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1453 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1454 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1455 ABS_MT_POSITION_Y); 1456 /* 1457 * Profile sensor in CR-48 tracks contacts reasonably well, 1458 * other non-image sensors with AGM use semi-mt. 1459 */ 1460 input_mt_init_slots(dev, 2, 1461 INPUT_MT_POINTER | 1462 (cr48_profile_sensor ? 1463 INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); 1464 } 1465 1466 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1467 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1468 1469 __set_bit(BTN_TOUCH, dev->keybit); 1470 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1471 1472 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1473 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1474 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1475 } 1476 1477 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1478 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1479 __set_bit(BTN_FORWARD, dev->keybit); 1480 __set_bit(BTN_BACK, dev->keybit); 1481 } 1482 1483 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1484 __set_bit(BTN_0 + i, dev->keybit); 1485 1486 __clear_bit(EV_REL, dev->evbit); 1487 __clear_bit(REL_X, dev->relbit); 1488 __clear_bit(REL_Y, dev->relbit); 1489 1490 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1491 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1492 if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids)) 1493 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1494 /* Clickpads report only left button */ 1495 __clear_bit(BTN_RIGHT, dev->keybit); 1496 __clear_bit(BTN_MIDDLE, dev->keybit); 1497 } 1498 } 1499 1500 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1501 void *data, char *buf) 1502 { 1503 struct synaptics_data *priv = psmouse->private; 1504 1505 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1506 } 1507 1508 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1509 void *data, const char *buf, 1510 size_t len) 1511 { 1512 struct synaptics_data *priv = psmouse->private; 1513 unsigned int value; 1514 int err; 1515 1516 err = kstrtouint(buf, 10, &value); 1517 if (err) 1518 return err; 1519 1520 if (value > 1) 1521 return -EINVAL; 1522 1523 if (value == priv->disable_gesture) 1524 return len; 1525 1526 priv->disable_gesture = value; 1527 if (value) 1528 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1529 else 1530 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1531 1532 if (synaptics_mode_cmd(psmouse, priv->mode)) 1533 return -EIO; 1534 1535 return len; 1536 } 1537 1538 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1539 synaptics_show_disable_gesture, 1540 synaptics_set_disable_gesture); 1541 1542 static void synaptics_disconnect(struct psmouse *psmouse) 1543 { 1544 struct synaptics_data *priv = psmouse->private; 1545 1546 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1547 device_remove_file(&psmouse->ps2dev.serio->dev, 1548 &psmouse_attr_disable_gesture.dattr); 1549 1550 synaptics_reset(psmouse); 1551 kfree(priv); 1552 psmouse->private = NULL; 1553 } 1554 1555 static int synaptics_reconnect(struct psmouse *psmouse) 1556 { 1557 struct synaptics_data *priv = psmouse->private; 1558 struct synaptics_data old_priv = *priv; 1559 unsigned char param[2]; 1560 int retry = 0; 1561 int error; 1562 1563 do { 1564 psmouse_reset(psmouse); 1565 if (retry) { 1566 /* 1567 * On some boxes, right after resuming, the touchpad 1568 * needs some time to finish initializing (I assume 1569 * it needs time to calibrate) and start responding 1570 * to Synaptics-specific queries, so let's wait a 1571 * bit. 1572 */ 1573 ssleep(1); 1574 } 1575 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1576 error = synaptics_detect(psmouse, 0); 1577 } while (error && ++retry < 3); 1578 1579 if (error) 1580 return -1; 1581 1582 if (retry > 1) 1583 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1584 1585 if (synaptics_query_hardware(psmouse)) { 1586 psmouse_err(psmouse, "Unable to query device.\n"); 1587 return -1; 1588 } 1589 1590 if (synaptics_set_mode(psmouse)) { 1591 psmouse_err(psmouse, "Unable to initialize device.\n"); 1592 return -1; 1593 } 1594 1595 if (old_priv.identity != priv->identity || 1596 old_priv.model_id != priv->model_id || 1597 old_priv.capabilities != priv->capabilities || 1598 old_priv.ext_cap != priv->ext_cap) { 1599 psmouse_err(psmouse, 1600 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1601 old_priv.identity, priv->identity, 1602 old_priv.model_id, priv->model_id, 1603 old_priv.capabilities, priv->capabilities, 1604 old_priv.ext_cap, priv->ext_cap); 1605 return -1; 1606 } 1607 1608 return 0; 1609 } 1610 1611 static bool impaired_toshiba_kbc; 1612 1613 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1614 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1615 { 1616 /* Toshiba Satellite */ 1617 .matches = { 1618 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1619 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1620 }, 1621 }, 1622 { 1623 /* Toshiba Dynabook */ 1624 .matches = { 1625 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1626 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1627 }, 1628 }, 1629 { 1630 /* Toshiba Portege M300 */ 1631 .matches = { 1632 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1633 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1634 }, 1635 1636 }, 1637 { 1638 /* Toshiba Portege M300 */ 1639 .matches = { 1640 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1641 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1642 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1643 }, 1644 1645 }, 1646 #endif 1647 { } 1648 }; 1649 1650 static bool broken_olpc_ec; 1651 1652 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1653 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1654 { 1655 /* OLPC XO-1 or XO-1.5 */ 1656 .matches = { 1657 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1658 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1659 }, 1660 }, 1661 #endif 1662 { } 1663 }; 1664 1665 static const struct dmi_system_id __initconst cr48_dmi_table[] = { 1666 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1667 { 1668 /* Cr-48 Chromebook (Codename Mario) */ 1669 .matches = { 1670 DMI_MATCH(DMI_SYS_VENDOR, "IEC"), 1671 DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), 1672 }, 1673 }, 1674 #endif 1675 { } 1676 }; 1677 1678 static const struct dmi_system_id forcepad_dmi_table[] __initconst = { 1679 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1680 { 1681 .matches = { 1682 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1683 DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"), 1684 }, 1685 }, 1686 #endif 1687 { } 1688 }; 1689 1690 void __init synaptics_module_init(void) 1691 { 1692 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1693 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1694 cr48_profile_sensor = dmi_check_system(cr48_dmi_table); 1695 1696 /* 1697 * Unfortunately ForcePad capability is not exported over PS/2, 1698 * so we have to resort to checking DMI. 1699 */ 1700 is_forcepad = dmi_check_system(forcepad_dmi_table); 1701 } 1702 1703 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1704 { 1705 struct synaptics_data *priv; 1706 int err = -1; 1707 1708 /* 1709 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1710 * packet spew overloads the EC such that key presses on the keyboard 1711 * are missed. Given that, don't even attempt to use Absolute mode. 1712 * Relative mode seems to work just fine. 1713 */ 1714 if (absolute_mode && broken_olpc_ec) { 1715 psmouse_info(psmouse, 1716 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1717 return -ENODEV; 1718 } 1719 1720 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1721 if (!priv) 1722 return -ENOMEM; 1723 1724 psmouse_reset(psmouse); 1725 1726 if (synaptics_query_hardware(psmouse)) { 1727 psmouse_err(psmouse, "Unable to query device.\n"); 1728 goto init_fail; 1729 } 1730 1731 priv->absolute_mode = absolute_mode; 1732 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1733 priv->disable_gesture = true; 1734 1735 if (synaptics_set_mode(psmouse)) { 1736 psmouse_err(psmouse, "Unable to initialize device.\n"); 1737 goto init_fail; 1738 } 1739 1740 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1741 1742 psmouse_info(psmouse, 1743 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1744 SYN_ID_MODEL(priv->identity), 1745 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1746 priv->model_id, 1747 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1748 priv->board_id, priv->firmware_id); 1749 1750 set_input_params(psmouse, priv); 1751 1752 /* 1753 * Encode touchpad model so that it can be used to set 1754 * input device->id.version and be visible to userspace. 1755 * Because version is __u16 we have to drop something. 1756 * Hardware info bits seem to be good candidates as they 1757 * are documented to be for Synaptics corp. internal use. 1758 */ 1759 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1760 (priv->model_id & 0x000000ff); 1761 1762 if (absolute_mode) { 1763 psmouse->protocol_handler = synaptics_process_byte; 1764 psmouse->pktsize = 6; 1765 } else { 1766 /* Relative mode follows standard PS/2 mouse protocol */ 1767 psmouse->protocol_handler = psmouse_process_byte; 1768 psmouse->pktsize = 3; 1769 } 1770 1771 psmouse->set_rate = synaptics_set_rate; 1772 psmouse->disconnect = synaptics_disconnect; 1773 psmouse->reconnect = synaptics_reconnect; 1774 psmouse->cleanup = synaptics_reset; 1775 /* Synaptics can usually stay in sync without extra help */ 1776 psmouse->resync_time = 0; 1777 1778 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1779 synaptics_pt_create(psmouse); 1780 1781 /* 1782 * Toshiba's KBC seems to have trouble handling data from 1783 * Synaptics at full rate. Switch to a lower rate (roughly 1784 * the same rate as a standard PS/2 mouse). 1785 */ 1786 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1787 psmouse_info(psmouse, 1788 "Toshiba %s detected, limiting rate to 40pps.\n", 1789 dmi_get_system_info(DMI_PRODUCT_NAME)); 1790 psmouse->rate = 40; 1791 } 1792 1793 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1794 err = device_create_file(&psmouse->ps2dev.serio->dev, 1795 &psmouse_attr_disable_gesture.dattr); 1796 if (err) { 1797 psmouse_err(psmouse, 1798 "Failed to create disable_gesture attribute (%d)", 1799 err); 1800 goto init_fail; 1801 } 1802 } 1803 1804 return 0; 1805 1806 init_fail: 1807 kfree(priv); 1808 return err; 1809 } 1810 1811 int synaptics_init(struct psmouse *psmouse) 1812 { 1813 return __synaptics_init(psmouse, true); 1814 } 1815 1816 int synaptics_init_relative(struct psmouse *psmouse) 1817 { 1818 return __synaptics_init(psmouse, false); 1819 } 1820 1821 bool synaptics_supported(void) 1822 { 1823 return true; 1824 } 1825 1826 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1827 1828 void __init synaptics_module_init(void) 1829 { 1830 } 1831 1832 int synaptics_init(struct psmouse *psmouse) 1833 { 1834 return -ENOSYS; 1835 } 1836 1837 bool synaptics_supported(void) 1838 { 1839 return false; 1840 } 1841 1842 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1843