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