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 struct min_max_quirk { 121 const char * const *pnp_ids; 122 int x_min, x_max, y_min, y_max; 123 }; 124 125 static const struct min_max_quirk min_max_pnpid_table[] = { 126 { 127 (const char * const []){"LEN0033", NULL}, 128 1024, 5052, 2258, 4832 129 }, 130 { 131 (const char * const []){"LEN0035", "LEN0042", NULL}, 132 1232, 5710, 1156, 4696 133 }, 134 { 135 (const char * const []){"LEN0034", "LEN0036", "LEN2002", 136 "LEN2004", NULL}, 137 1024, 5112, 2024, 4832 138 }, 139 { 140 (const char * const []){"LEN2001", NULL}, 141 1024, 5022, 2508, 4832 142 }, 143 { } 144 }; 145 146 /* This list has been kindly provided by Synaptics. */ 147 static const char * const topbuttonpad_pnp_ids[] = { 148 "LEN0017", 149 "LEN0018", 150 "LEN0019", 151 "LEN0023", 152 "LEN002A", 153 "LEN002B", 154 "LEN002C", 155 "LEN002D", 156 "LEN002E", 157 "LEN0033", /* Helix */ 158 "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ 159 "LEN0035", /* X240 */ 160 "LEN0036", /* T440 */ 161 "LEN0037", 162 "LEN0038", 163 "LEN0041", 164 "LEN0042", /* Yoga */ 165 "LEN0045", 166 "LEN0046", 167 "LEN0047", 168 "LEN0048", 169 "LEN0049", 170 "LEN2000", 171 "LEN2001", /* Edge E431 */ 172 "LEN2002", /* Edge E531 */ 173 "LEN2003", 174 "LEN2004", /* L440 */ 175 "LEN2005", 176 "LEN2006", 177 "LEN2007", 178 "LEN2008", 179 "LEN2009", 180 "LEN200A", 181 "LEN200B", 182 NULL 183 }; 184 185 static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[]) 186 { 187 int i; 188 189 if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) 190 for (i = 0; ids[i]; i++) 191 if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i])) 192 return true; 193 194 return false; 195 } 196 197 /***************************************************************************** 198 * Synaptics communications functions 199 ****************************************************************************/ 200 201 /* 202 * Synaptics touchpads report the y coordinate from bottom to top, which is 203 * opposite from what userspace expects. 204 * This function is used to invert y before reporting. 205 */ 206 static int synaptics_invert_y(int y) 207 { 208 return YMAX_NOMINAL + YMIN_NOMINAL - y; 209 } 210 211 /* 212 * Send a command to the synpatics touchpad by special commands 213 */ 214 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 215 { 216 if (psmouse_sliced_command(psmouse, c)) 217 return -1; 218 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 219 return -1; 220 return 0; 221 } 222 223 /* 224 * Read the model-id bytes from the touchpad 225 * see also SYN_MODEL_* macros 226 */ 227 static int synaptics_model_id(struct psmouse *psmouse) 228 { 229 struct synaptics_data *priv = psmouse->private; 230 unsigned char mi[3]; 231 232 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 233 return -1; 234 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 235 return 0; 236 } 237 238 /* 239 * Read the board id from the touchpad 240 * The board id is encoded in the "QUERY MODES" response 241 */ 242 static int synaptics_board_id(struct psmouse *psmouse) 243 { 244 struct synaptics_data *priv = psmouse->private; 245 unsigned char bid[3]; 246 247 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 248 return -1; 249 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 250 return 0; 251 } 252 253 /* 254 * Read the firmware id from the touchpad 255 */ 256 static int synaptics_firmware_id(struct psmouse *psmouse) 257 { 258 struct synaptics_data *priv = psmouse->private; 259 unsigned char fwid[3]; 260 261 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 262 return -1; 263 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 264 return 0; 265 } 266 267 /* 268 * Read the capability-bits from the touchpad 269 * see also the SYN_CAP_* macros 270 */ 271 static int synaptics_capability(struct psmouse *psmouse) 272 { 273 struct synaptics_data *priv = psmouse->private; 274 unsigned char cap[3]; 275 276 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 277 return -1; 278 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 279 priv->ext_cap = priv->ext_cap_0c = 0; 280 281 /* 282 * Older firmwares had submodel ID fixed to 0x47 283 */ 284 if (SYN_ID_FULL(priv->identity) < 0x705 && 285 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 286 return -1; 287 } 288 289 /* 290 * Unless capExtended is set the rest of the flags should be ignored 291 */ 292 if (!SYN_CAP_EXTENDED(priv->capabilities)) 293 priv->capabilities = 0; 294 295 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 296 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 297 psmouse_warn(psmouse, 298 "device claims to have extended capabilities, but I'm not able to read them.\n"); 299 } else { 300 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 301 302 /* 303 * if nExtBtn is greater than 8 it should be considered 304 * invalid and treated as 0 305 */ 306 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 307 priv->ext_cap &= 0xff0fff; 308 } 309 } 310 311 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 312 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 313 psmouse_warn(psmouse, 314 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 315 } else { 316 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 317 } 318 } 319 320 return 0; 321 } 322 323 /* 324 * Identify Touchpad 325 * See also the SYN_ID_* macros 326 */ 327 static int synaptics_identify(struct psmouse *psmouse) 328 { 329 struct synaptics_data *priv = psmouse->private; 330 unsigned char id[3]; 331 332 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 333 return -1; 334 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 335 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 336 return 0; 337 return -1; 338 } 339 340 /* 341 * Read touchpad resolution and maximum reported coordinates 342 * Resolution is left zero if touchpad does not support the query 343 */ 344 345 static int synaptics_resolution(struct psmouse *psmouse) 346 { 347 struct synaptics_data *priv = psmouse->private; 348 unsigned char resp[3]; 349 int i; 350 351 if (SYN_ID_MAJOR(priv->identity) < 4) 352 return 0; 353 354 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 355 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 356 priv->x_res = resp[0]; /* x resolution in units/mm */ 357 priv->y_res = resp[2]; /* y resolution in units/mm */ 358 } 359 } 360 361 for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { 362 if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) { 363 priv->x_min = min_max_pnpid_table[i].x_min; 364 priv->x_max = min_max_pnpid_table[i].x_max; 365 priv->y_min = min_max_pnpid_table[i].y_min; 366 priv->y_max = min_max_pnpid_table[i].y_max; 367 return 0; 368 } 369 } 370 371 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 372 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 373 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 374 psmouse_warn(psmouse, 375 "device claims to have max coordinates query, but I'm not able to read it.\n"); 376 } else { 377 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 378 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 379 } 380 } 381 382 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 383 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 384 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 385 psmouse_warn(psmouse, 386 "device claims to have min coordinates query, but I'm not able to read it.\n"); 387 } else { 388 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 389 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 390 } 391 } 392 393 return 0; 394 } 395 396 static int synaptics_query_hardware(struct psmouse *psmouse) 397 { 398 if (synaptics_identify(psmouse)) 399 return -1; 400 if (synaptics_model_id(psmouse)) 401 return -1; 402 if (synaptics_firmware_id(psmouse)) 403 return -1; 404 if (synaptics_board_id(psmouse)) 405 return -1; 406 if (synaptics_capability(psmouse)) 407 return -1; 408 if (synaptics_resolution(psmouse)) 409 return -1; 410 411 return 0; 412 } 413 414 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 415 { 416 static unsigned char param = 0xc8; 417 struct synaptics_data *priv = psmouse->private; 418 419 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 420 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 421 return 0; 422 423 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 424 return -1; 425 426 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 427 return -1; 428 429 /* Advanced gesture mode also sends multi finger data */ 430 priv->capabilities |= BIT(1); 431 432 return 0; 433 } 434 435 static int synaptics_set_mode(struct psmouse *psmouse) 436 { 437 struct synaptics_data *priv = psmouse->private; 438 439 priv->mode = 0; 440 if (priv->absolute_mode) 441 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 442 if (priv->disable_gesture) 443 priv->mode |= SYN_BIT_DISABLE_GESTURE; 444 if (psmouse->rate >= 80) 445 priv->mode |= SYN_BIT_HIGH_RATE; 446 if (SYN_CAP_EXTENDED(priv->capabilities)) 447 priv->mode |= SYN_BIT_W_MODE; 448 449 if (synaptics_mode_cmd(psmouse, priv->mode)) 450 return -1; 451 452 if (priv->absolute_mode && 453 synaptics_set_advanced_gesture_mode(psmouse)) { 454 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 455 return -1; 456 } 457 458 return 0; 459 } 460 461 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 462 { 463 struct synaptics_data *priv = psmouse->private; 464 465 if (rate >= 80) { 466 priv->mode |= SYN_BIT_HIGH_RATE; 467 psmouse->rate = 80; 468 } else { 469 priv->mode &= ~SYN_BIT_HIGH_RATE; 470 psmouse->rate = 40; 471 } 472 473 synaptics_mode_cmd(psmouse, priv->mode); 474 } 475 476 /***************************************************************************** 477 * Synaptics pass-through PS/2 port support 478 ****************************************************************************/ 479 static int synaptics_pt_write(struct serio *serio, unsigned char c) 480 { 481 struct psmouse *parent = serio_get_drvdata(serio->parent); 482 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 483 484 if (psmouse_sliced_command(parent, c)) 485 return -1; 486 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 487 return -1; 488 return 0; 489 } 490 491 static int synaptics_pt_start(struct serio *serio) 492 { 493 struct psmouse *parent = serio_get_drvdata(serio->parent); 494 struct synaptics_data *priv = parent->private; 495 496 serio_pause_rx(parent->ps2dev.serio); 497 priv->pt_port = serio; 498 serio_continue_rx(parent->ps2dev.serio); 499 500 return 0; 501 } 502 503 static void synaptics_pt_stop(struct serio *serio) 504 { 505 struct psmouse *parent = serio_get_drvdata(serio->parent); 506 struct synaptics_data *priv = parent->private; 507 508 serio_pause_rx(parent->ps2dev.serio); 509 priv->pt_port = NULL; 510 serio_continue_rx(parent->ps2dev.serio); 511 } 512 513 static int synaptics_is_pt_packet(unsigned char *buf) 514 { 515 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 516 } 517 518 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 519 { 520 struct psmouse *child = serio_get_drvdata(ptport); 521 522 if (child && child->state == PSMOUSE_ACTIVATED) { 523 serio_interrupt(ptport, packet[1], 0); 524 serio_interrupt(ptport, packet[4], 0); 525 serio_interrupt(ptport, packet[5], 0); 526 if (child->pktsize == 4) 527 serio_interrupt(ptport, packet[2], 0); 528 } else 529 serio_interrupt(ptport, packet[1], 0); 530 } 531 532 static void synaptics_pt_activate(struct psmouse *psmouse) 533 { 534 struct synaptics_data *priv = psmouse->private; 535 struct psmouse *child = serio_get_drvdata(priv->pt_port); 536 537 /* adjust the touchpad to child's choice of protocol */ 538 if (child) { 539 if (child->pktsize == 4) 540 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 541 else 542 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 543 544 if (synaptics_mode_cmd(psmouse, priv->mode)) 545 psmouse_warn(psmouse, 546 "failed to switch guest protocol\n"); 547 } 548 } 549 550 static void synaptics_pt_create(struct psmouse *psmouse) 551 { 552 struct serio *serio; 553 554 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 555 if (!serio) { 556 psmouse_err(psmouse, 557 "not enough memory for pass-through port\n"); 558 return; 559 } 560 561 serio->id.type = SERIO_PS_PSTHRU; 562 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 563 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 564 serio->write = synaptics_pt_write; 565 serio->start = synaptics_pt_start; 566 serio->stop = synaptics_pt_stop; 567 serio->parent = psmouse->ps2dev.serio; 568 569 psmouse->pt_activate = synaptics_pt_activate; 570 571 psmouse_info(psmouse, "serio: %s port at %s\n", 572 serio->name, psmouse->phys); 573 serio_register_port(serio); 574 } 575 576 /***************************************************************************** 577 * Functions to interpret the absolute mode packets 578 ****************************************************************************/ 579 580 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 581 int sgm, int agm) 582 { 583 state->count = count; 584 state->sgm = sgm; 585 state->agm = agm; 586 } 587 588 static void synaptics_parse_agm(const unsigned char buf[], 589 struct synaptics_data *priv, 590 struct synaptics_hw_state *hw) 591 { 592 struct synaptics_hw_state *agm = &priv->agm; 593 int agm_packet_type; 594 595 agm_packet_type = (buf[5] & 0x30) >> 4; 596 switch (agm_packet_type) { 597 case 1: 598 /* Gesture packet: (x, y, z) half resolution */ 599 agm->w = hw->w; 600 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 601 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 602 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 603 break; 604 605 case 2: 606 /* AGM-CONTACT packet: (count, sgm, agm) */ 607 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 608 break; 609 610 default: 611 break; 612 } 613 614 /* Record that at least one AGM has been received since last SGM */ 615 priv->agm_pending = true; 616 } 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 hw->left = (buf[0] & 0x01) ? 1 : 0; 630 hw->right = (buf[0] & 0x02) ? 1 : 0; 631 632 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 633 /* 634 * Clickpad's button is transmitted as middle button, 635 * however, since it is primary button, we will report 636 * it as BTN_LEFT. 637 */ 638 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 639 640 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 641 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 642 if (hw->w == 2) 643 hw->scroll = (signed char)(buf[1]); 644 } 645 646 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 647 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 648 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 649 } 650 651 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 652 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 653 hw->w == 2) { 654 synaptics_parse_agm(buf, priv, hw); 655 return 1; 656 } 657 658 hw->x = (((buf[3] & 0x10) << 8) | 659 ((buf[1] & 0x0f) << 8) | 660 buf[4]); 661 hw->y = (((buf[3] & 0x20) << 7) | 662 ((buf[1] & 0xf0) << 4) | 663 buf[5]); 664 hw->z = buf[2]; 665 666 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 667 ((buf[0] ^ buf[3]) & 0x02)) { 668 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 669 default: 670 /* 671 * if nExtBtn is greater than 8 it should be 672 * considered invalid and treated as 0 673 */ 674 break; 675 case 8: 676 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 677 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 678 case 6: 679 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 680 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 681 case 4: 682 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 683 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 684 case 2: 685 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 686 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 687 } 688 } 689 } else { 690 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 691 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 692 693 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 694 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 695 696 hw->left = (buf[0] & 0x01) ? 1 : 0; 697 hw->right = (buf[0] & 0x02) ? 1 : 0; 698 } 699 700 /* 701 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 702 * is used by some firmware to indicate a finger at the edge of 703 * the touchpad whose precise position cannot be determined, so 704 * convert these values to the maximum axis value. 705 */ 706 if (hw->x > X_MAX_POSITIVE) 707 hw->x -= 1 << ABS_POS_BITS; 708 else if (hw->x == X_MAX_POSITIVE) 709 hw->x = XMAX; 710 711 if (hw->y > Y_MAX_POSITIVE) 712 hw->y -= 1 << ABS_POS_BITS; 713 else if (hw->y == Y_MAX_POSITIVE) 714 hw->y = YMAX; 715 716 return 0; 717 } 718 719 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 720 bool active, int x, int y) 721 { 722 input_mt_slot(dev, slot); 723 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 724 if (active) { 725 input_report_abs(dev, ABS_MT_POSITION_X, x); 726 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 727 } 728 } 729 730 static void synaptics_report_semi_mt_data(struct input_dev *dev, 731 const struct synaptics_hw_state *a, 732 const struct synaptics_hw_state *b, 733 int num_fingers) 734 { 735 if (num_fingers >= 2) { 736 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 737 min(a->y, b->y)); 738 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 739 max(a->y, b->y)); 740 } else if (num_fingers == 1) { 741 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 742 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 743 } else { 744 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 745 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 746 } 747 } 748 749 static void synaptics_report_buttons(struct psmouse *psmouse, 750 const struct synaptics_hw_state *hw) 751 { 752 struct input_dev *dev = psmouse->dev; 753 struct synaptics_data *priv = psmouse->private; 754 int i; 755 756 input_report_key(dev, BTN_LEFT, hw->left); 757 input_report_key(dev, BTN_RIGHT, hw->right); 758 759 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 760 input_report_key(dev, BTN_MIDDLE, hw->middle); 761 762 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 763 input_report_key(dev, BTN_FORWARD, hw->up); 764 input_report_key(dev, BTN_BACK, hw->down); 765 } 766 767 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 768 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 769 } 770 771 static void synaptics_report_slot(struct input_dev *dev, int slot, 772 const struct synaptics_hw_state *hw) 773 { 774 input_mt_slot(dev, slot); 775 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 776 if (!hw) 777 return; 778 779 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 780 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 781 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 782 } 783 784 static void synaptics_report_mt_data(struct psmouse *psmouse, 785 struct synaptics_mt_state *mt_state, 786 const struct synaptics_hw_state *sgm) 787 { 788 struct input_dev *dev = psmouse->dev; 789 struct synaptics_data *priv = psmouse->private; 790 struct synaptics_hw_state *agm = &priv->agm; 791 struct synaptics_mt_state *old = &priv->mt_state; 792 793 switch (mt_state->count) { 794 case 0: 795 synaptics_report_slot(dev, 0, NULL); 796 synaptics_report_slot(dev, 1, NULL); 797 break; 798 case 1: 799 if (mt_state->sgm == -1) { 800 synaptics_report_slot(dev, 0, NULL); 801 synaptics_report_slot(dev, 1, NULL); 802 } else if (mt_state->sgm == 0) { 803 synaptics_report_slot(dev, 0, sgm); 804 synaptics_report_slot(dev, 1, NULL); 805 } else { 806 synaptics_report_slot(dev, 0, NULL); 807 synaptics_report_slot(dev, 1, sgm); 808 } 809 break; 810 default: 811 /* 812 * If the finger slot contained in SGM is valid, and either 813 * hasn't changed, or is new, or the old SGM has now moved to 814 * AGM, then report SGM in MTB slot 0. 815 * Otherwise, empty MTB slot 0. 816 */ 817 if (mt_state->sgm != -1 && 818 (mt_state->sgm == old->sgm || 819 old->sgm == -1 || mt_state->agm == old->sgm)) 820 synaptics_report_slot(dev, 0, sgm); 821 else 822 synaptics_report_slot(dev, 0, NULL); 823 824 /* 825 * If the finger slot contained in AGM is valid, and either 826 * hasn't changed, or is new, then report AGM in MTB slot 1. 827 * Otherwise, empty MTB slot 1. 828 * 829 * However, in the case where the AGM is new, make sure that 830 * that it is either the same as the old SGM, or there was no 831 * SGM. 832 * 833 * Otherwise, if the SGM was just 1, and the new AGM is 2, then 834 * the new AGM will keep the old SGM's tracking ID, which can 835 * cause apparent drumroll. This happens if in the following 836 * valid finger sequence: 837 * 838 * Action SGM AGM (MTB slot:Contact) 839 * 1. Touch contact 0 (0:0) 840 * 2. Touch contact 1 (0:0, 1:1) 841 * 3. Lift contact 0 (1:1) 842 * 4. Touch contacts 2,3 (0:2, 1:3) 843 * 844 * In step 4, contact 3, in AGM must not be given the same 845 * tracking ID as contact 1 had in step 3. To avoid this, 846 * the first agm with contact 3 is dropped and slot 1 is 847 * invalidated (tracking ID = -1). 848 */ 849 if (mt_state->agm != -1 && 850 (mt_state->agm == old->agm || 851 (old->agm == -1 && 852 (old->sgm == -1 || mt_state->agm == old->sgm)))) 853 synaptics_report_slot(dev, 1, agm); 854 else 855 synaptics_report_slot(dev, 1, NULL); 856 break; 857 } 858 859 /* Don't use active slot count to generate BTN_TOOL events. */ 860 input_mt_report_pointer_emulation(dev, false); 861 862 /* Send the number of fingers reported by touchpad itself. */ 863 input_mt_report_finger_count(dev, mt_state->count); 864 865 synaptics_report_buttons(psmouse, sgm); 866 867 input_sync(dev); 868 } 869 870 /* Handle case where mt_state->count = 0 */ 871 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 872 struct synaptics_mt_state *mt_state) 873 { 874 synaptics_mt_state_set(mt_state, 0, -1, -1); 875 priv->mt_state_lost = false; 876 } 877 878 /* Handle case where mt_state->count = 1 */ 879 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 880 struct synaptics_mt_state *mt_state) 881 { 882 struct synaptics_hw_state *agm = &priv->agm; 883 struct synaptics_mt_state *old = &priv->mt_state; 884 885 /* 886 * If the last AGM was (0,0,0), and there is only one finger left, 887 * then we absolutely know that SGM contains slot 0, and all other 888 * fingers have been removed. 889 */ 890 if (priv->agm_pending && agm->z == 0) { 891 synaptics_mt_state_set(mt_state, 1, 0, -1); 892 priv->mt_state_lost = false; 893 return; 894 } 895 896 switch (old->count) { 897 case 0: 898 synaptics_mt_state_set(mt_state, 1, 0, -1); 899 break; 900 case 1: 901 /* 902 * If mt_state_lost, then the previous transition was 3->1, 903 * and SGM now contains either slot 0 or 1, but we don't know 904 * which. So, we just assume that the SGM now contains slot 1. 905 * 906 * If pending AGM and either: 907 * (a) the previous SGM slot contains slot 0, or 908 * (b) there was no SGM slot 909 * then, the SGM now contains slot 1 910 * 911 * Case (a) happens with very rapid "drum roll" gestures, where 912 * slot 0 finger is lifted and a new slot 1 finger touches 913 * within one reporting interval. 914 * 915 * Case (b) happens if initially two or more fingers tap 916 * briefly, and all but one lift before the end of the first 917 * reporting interval. 918 * 919 * (In both these cases, slot 0 will becomes empty, so SGM 920 * contains slot 1 with the new finger) 921 * 922 * Else, if there was no previous SGM, it now contains slot 0. 923 * 924 * Otherwise, SGM still contains the same slot. 925 */ 926 if (priv->mt_state_lost || 927 (priv->agm_pending && old->sgm <= 0)) 928 synaptics_mt_state_set(mt_state, 1, 1, -1); 929 else if (old->sgm == -1) 930 synaptics_mt_state_set(mt_state, 1, 0, -1); 931 break; 932 case 2: 933 /* 934 * If mt_state_lost, we don't know which finger SGM contains. 935 * 936 * So, report 1 finger, but with both slots empty. 937 * We will use slot 1 on subsequent 1->1 938 */ 939 if (priv->mt_state_lost) { 940 synaptics_mt_state_set(mt_state, 1, -1, -1); 941 break; 942 } 943 /* 944 * Since the last AGM was NOT (0,0,0), it was the finger in 945 * slot 0 that has been removed. 946 * So, SGM now contains previous AGM's slot, and AGM is now 947 * empty. 948 */ 949 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 950 break; 951 case 3: 952 /* 953 * Since last AGM was not (0,0,0), we don't know which finger 954 * is left. 955 * 956 * So, report 1 finger, but with both slots empty. 957 * We will use slot 1 on subsequent 1->1 958 */ 959 synaptics_mt_state_set(mt_state, 1, -1, -1); 960 priv->mt_state_lost = true; 961 break; 962 case 4: 963 case 5: 964 /* mt_state was updated by AGM-CONTACT packet */ 965 break; 966 } 967 } 968 969 /* Handle case where mt_state->count = 2 */ 970 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 971 struct synaptics_mt_state *mt_state) 972 { 973 struct synaptics_mt_state *old = &priv->mt_state; 974 975 switch (old->count) { 976 case 0: 977 synaptics_mt_state_set(mt_state, 2, 0, 1); 978 break; 979 case 1: 980 /* 981 * If previous SGM contained slot 1 or higher, SGM now contains 982 * slot 0 (the newly touching finger) and AGM contains SGM's 983 * previous slot. 984 * 985 * Otherwise, SGM still contains slot 0 and AGM now contains 986 * slot 1. 987 */ 988 if (old->sgm >= 1) 989 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 990 else 991 synaptics_mt_state_set(mt_state, 2, 0, 1); 992 break; 993 case 2: 994 /* 995 * If mt_state_lost, SGM now contains either finger 1 or 2, but 996 * we don't know which. 997 * So, we just assume that the SGM contains slot 0 and AGM 1. 998 */ 999 if (priv->mt_state_lost) 1000 synaptics_mt_state_set(mt_state, 2, 0, 1); 1001 /* 1002 * Otherwise, use the same mt_state, since it either hasn't 1003 * changed, or was updated by a recently received AGM-CONTACT 1004 * packet. 1005 */ 1006 break; 1007 case 3: 1008 /* 1009 * 3->2 transitions have two unsolvable problems: 1010 * 1) no indication is given which finger was removed 1011 * 2) no way to tell if agm packet was for finger 3 1012 * before 3->2, or finger 2 after 3->2. 1013 * 1014 * So, report 2 fingers, but empty all slots. 1015 * We will guess slots [0,1] on subsequent 2->2. 1016 */ 1017 synaptics_mt_state_set(mt_state, 2, -1, -1); 1018 priv->mt_state_lost = true; 1019 break; 1020 case 4: 1021 case 5: 1022 /* mt_state was updated by AGM-CONTACT packet */ 1023 break; 1024 } 1025 } 1026 1027 /* Handle case where mt_state->count = 3 */ 1028 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 1029 struct synaptics_mt_state *mt_state) 1030 { 1031 struct synaptics_mt_state *old = &priv->mt_state; 1032 1033 switch (old->count) { 1034 case 0: 1035 synaptics_mt_state_set(mt_state, 3, 0, 2); 1036 break; 1037 case 1: 1038 /* 1039 * If previous SGM contained slot 2 or higher, SGM now contains 1040 * slot 0 (one of the newly touching fingers) and AGM contains 1041 * SGM's previous slot. 1042 * 1043 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 1044 */ 1045 if (old->sgm >= 2) 1046 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 1047 else 1048 synaptics_mt_state_set(mt_state, 3, 0, 2); 1049 break; 1050 case 2: 1051 /* 1052 * If the AGM previously contained slot 3 or higher, then the 1053 * newly touching finger is in the lowest available slot. 1054 * 1055 * If SGM was previously 1 or higher, then the new SGM is 1056 * now slot 0 (with a new finger), otherwise, the new finger 1057 * is now in a hidden slot between 0 and AGM's slot. 1058 * 1059 * In all such cases, the SGM now contains slot 0, and the AGM 1060 * continues to contain the same slot as before. 1061 */ 1062 if (old->agm >= 3) { 1063 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 1064 break; 1065 } 1066 1067 /* 1068 * After some 3->1 and all 3->2 transitions, we lose track 1069 * of which slot is reported by SGM and AGM. 1070 * 1071 * For 2->3 in this state, report 3 fingers, but empty all 1072 * slots, and we will guess (0,2) on a subsequent 0->3. 1073 * 1074 * To userspace, the resulting transition will look like: 1075 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 1076 */ 1077 if (priv->mt_state_lost) { 1078 synaptics_mt_state_set(mt_state, 3, -1, -1); 1079 break; 1080 } 1081 1082 /* 1083 * If the (SGM,AGM) really previously contained slots (0, 1), 1084 * then we cannot know what slot was just reported by the AGM, 1085 * because the 2->3 transition can occur either before or after 1086 * the AGM packet. Thus, this most recent AGM could contain 1087 * either the same old slot 1 or the new slot 2. 1088 * Subsequent AGMs will be reporting slot 2. 1089 * 1090 * To userspace, the resulting transition will look like: 1091 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 1092 */ 1093 synaptics_mt_state_set(mt_state, 3, 0, -1); 1094 break; 1095 case 3: 1096 /* 1097 * If, for whatever reason, the previous agm was invalid, 1098 * Assume SGM now contains slot 0, AGM now contains slot 2. 1099 */ 1100 if (old->agm <= 2) 1101 synaptics_mt_state_set(mt_state, 3, 0, 2); 1102 /* 1103 * mt_state either hasn't changed, or was updated by a recently 1104 * received AGM-CONTACT packet. 1105 */ 1106 break; 1107 1108 case 4: 1109 case 5: 1110 /* mt_state was updated by AGM-CONTACT packet */ 1111 break; 1112 } 1113 } 1114 1115 /* Handle case where mt_state->count = 4, or = 5 */ 1116 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 1117 struct synaptics_mt_state *mt_state) 1118 { 1119 /* mt_state was updated correctly by AGM-CONTACT packet */ 1120 priv->mt_state_lost = false; 1121 } 1122 1123 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1124 struct synaptics_hw_state *sgm) 1125 { 1126 struct synaptics_data *priv = psmouse->private; 1127 struct synaptics_hw_state *agm = &priv->agm; 1128 struct synaptics_mt_state mt_state; 1129 1130 /* Initialize using current mt_state (as updated by last agm) */ 1131 mt_state = agm->mt_state; 1132 1133 /* 1134 * Update mt_state using the new finger count and current mt_state. 1135 */ 1136 if (sgm->z == 0) 1137 synaptics_image_sensor_0f(priv, &mt_state); 1138 else if (sgm->w >= 4) 1139 synaptics_image_sensor_1f(priv, &mt_state); 1140 else if (sgm->w == 0) 1141 synaptics_image_sensor_2f(priv, &mt_state); 1142 else if (sgm->w == 1 && mt_state.count <= 3) 1143 synaptics_image_sensor_3f(priv, &mt_state); 1144 else 1145 synaptics_image_sensor_45f(priv, &mt_state); 1146 1147 /* Send resulting input events to user space */ 1148 synaptics_report_mt_data(psmouse, &mt_state, sgm); 1149 1150 /* Store updated mt_state */ 1151 priv->mt_state = agm->mt_state = mt_state; 1152 priv->agm_pending = false; 1153 } 1154 1155 /* 1156 * called for each full received packet from the touchpad 1157 */ 1158 static void synaptics_process_packet(struct psmouse *psmouse) 1159 { 1160 struct input_dev *dev = psmouse->dev; 1161 struct synaptics_data *priv = psmouse->private; 1162 struct synaptics_hw_state hw; 1163 int num_fingers; 1164 int finger_width; 1165 1166 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1167 return; 1168 1169 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1170 synaptics_image_sensor_process(psmouse, &hw); 1171 return; 1172 } 1173 1174 if (hw.scroll) { 1175 priv->scroll += hw.scroll; 1176 1177 while (priv->scroll >= 4) { 1178 input_report_key(dev, BTN_BACK, !hw.down); 1179 input_sync(dev); 1180 input_report_key(dev, BTN_BACK, hw.down); 1181 input_sync(dev); 1182 priv->scroll -= 4; 1183 } 1184 while (priv->scroll <= -4) { 1185 input_report_key(dev, BTN_FORWARD, !hw.up); 1186 input_sync(dev); 1187 input_report_key(dev, BTN_FORWARD, hw.up); 1188 input_sync(dev); 1189 priv->scroll += 4; 1190 } 1191 return; 1192 } 1193 1194 if (hw.z > 0 && hw.x > 1) { 1195 num_fingers = 1; 1196 finger_width = 5; 1197 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1198 switch (hw.w) { 1199 case 0 ... 1: 1200 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1201 num_fingers = hw.w + 2; 1202 break; 1203 case 2: 1204 if (SYN_MODEL_PEN(priv->model_id)) 1205 ; /* Nothing, treat a pen as a single finger */ 1206 break; 1207 case 4 ... 15: 1208 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1209 finger_width = hw.w; 1210 break; 1211 } 1212 } 1213 } else { 1214 num_fingers = 0; 1215 finger_width = 0; 1216 } 1217 1218 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1219 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1220 num_fingers); 1221 1222 /* Post events 1223 * BTN_TOUCH has to be first as mousedev relies on it when doing 1224 * absolute -> relative conversion 1225 */ 1226 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1227 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1228 1229 if (num_fingers > 0) { 1230 input_report_abs(dev, ABS_X, hw.x); 1231 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1232 } 1233 input_report_abs(dev, ABS_PRESSURE, hw.z); 1234 1235 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1236 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1237 1238 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1239 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1240 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1241 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1242 } 1243 1244 synaptics_report_buttons(psmouse, &hw); 1245 1246 input_sync(dev); 1247 } 1248 1249 static int synaptics_validate_byte(struct psmouse *psmouse, 1250 int idx, unsigned char pkt_type) 1251 { 1252 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1253 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1254 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1255 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1256 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1257 const char *packet = psmouse->packet; 1258 1259 if (idx < 0 || idx > 4) 1260 return 0; 1261 1262 switch (pkt_type) { 1263 1264 case SYN_NEWABS: 1265 case SYN_NEWABS_RELAXED: 1266 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1267 1268 case SYN_NEWABS_STRICT: 1269 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1270 1271 case SYN_OLDABS: 1272 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1273 1274 default: 1275 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1276 return 0; 1277 } 1278 } 1279 1280 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1281 { 1282 int i; 1283 1284 for (i = 0; i < 5; i++) 1285 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1286 psmouse_info(psmouse, "using relaxed packet validation\n"); 1287 return SYN_NEWABS_RELAXED; 1288 } 1289 1290 return SYN_NEWABS_STRICT; 1291 } 1292 1293 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1294 { 1295 struct synaptics_data *priv = psmouse->private; 1296 1297 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1298 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1299 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1300 1301 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1302 synaptics_is_pt_packet(psmouse->packet)) { 1303 if (priv->pt_port) 1304 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1305 } else 1306 synaptics_process_packet(psmouse); 1307 1308 return PSMOUSE_FULL_PACKET; 1309 } 1310 1311 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1312 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1313 } 1314 1315 /***************************************************************************** 1316 * Driver initialization/cleanup functions 1317 ****************************************************************************/ 1318 static void set_abs_position_params(struct input_dev *dev, 1319 struct synaptics_data *priv, int x_code, 1320 int y_code) 1321 { 1322 int x_min = priv->x_min ?: XMIN_NOMINAL; 1323 int x_max = priv->x_max ?: XMAX_NOMINAL; 1324 int y_min = priv->y_min ?: YMIN_NOMINAL; 1325 int y_max = priv->y_max ?: YMAX_NOMINAL; 1326 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1327 SYN_REDUCED_FILTER_FUZZ : 0; 1328 1329 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1330 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1331 input_abs_set_res(dev, x_code, priv->x_res); 1332 input_abs_set_res(dev, y_code, priv->y_res); 1333 } 1334 1335 static void set_input_params(struct psmouse *psmouse, 1336 struct synaptics_data *priv) 1337 { 1338 struct input_dev *dev = psmouse->dev; 1339 int i; 1340 1341 /* Things that apply to both modes */ 1342 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1343 __set_bit(EV_KEY, dev->evbit); 1344 __set_bit(BTN_LEFT, dev->keybit); 1345 __set_bit(BTN_RIGHT, dev->keybit); 1346 1347 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1348 __set_bit(BTN_MIDDLE, dev->keybit); 1349 1350 if (!priv->absolute_mode) { 1351 /* Relative mode */ 1352 __set_bit(EV_REL, dev->evbit); 1353 __set_bit(REL_X, dev->relbit); 1354 __set_bit(REL_Y, dev->relbit); 1355 return; 1356 } 1357 1358 /* Absolute mode */ 1359 __set_bit(EV_ABS, dev->evbit); 1360 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1361 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1362 1363 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1364 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1365 ABS_MT_POSITION_Y); 1366 /* Image sensors can report per-contact pressure */ 1367 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1368 input_mt_init_slots(dev, 2, INPUT_MT_POINTER); 1369 1370 /* Image sensors can signal 4 and 5 finger clicks */ 1371 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1372 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1373 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1374 /* Non-image sensors with AGM use semi-mt */ 1375 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 1376 input_mt_init_slots(dev, 2, 0); 1377 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1378 ABS_MT_POSITION_Y); 1379 } 1380 1381 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1382 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1383 1384 __set_bit(BTN_TOUCH, dev->keybit); 1385 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1386 1387 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1388 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1389 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1390 } 1391 1392 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1393 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1394 __set_bit(BTN_FORWARD, dev->keybit); 1395 __set_bit(BTN_BACK, dev->keybit); 1396 } 1397 1398 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1399 __set_bit(BTN_0 + i, dev->keybit); 1400 1401 __clear_bit(EV_REL, dev->evbit); 1402 __clear_bit(REL_X, dev->relbit); 1403 __clear_bit(REL_Y, dev->relbit); 1404 1405 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1406 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1407 if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids)) 1408 __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); 1409 /* Clickpads report only left button */ 1410 __clear_bit(BTN_RIGHT, dev->keybit); 1411 __clear_bit(BTN_MIDDLE, dev->keybit); 1412 } 1413 } 1414 1415 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1416 void *data, char *buf) 1417 { 1418 struct synaptics_data *priv = psmouse->private; 1419 1420 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1421 } 1422 1423 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1424 void *data, const char *buf, 1425 size_t len) 1426 { 1427 struct synaptics_data *priv = psmouse->private; 1428 unsigned int value; 1429 int err; 1430 1431 err = kstrtouint(buf, 10, &value); 1432 if (err) 1433 return err; 1434 1435 if (value > 1) 1436 return -EINVAL; 1437 1438 if (value == priv->disable_gesture) 1439 return len; 1440 1441 priv->disable_gesture = value; 1442 if (value) 1443 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1444 else 1445 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1446 1447 if (synaptics_mode_cmd(psmouse, priv->mode)) 1448 return -EIO; 1449 1450 return len; 1451 } 1452 1453 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1454 synaptics_show_disable_gesture, 1455 synaptics_set_disable_gesture); 1456 1457 static void synaptics_disconnect(struct psmouse *psmouse) 1458 { 1459 struct synaptics_data *priv = psmouse->private; 1460 1461 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1462 device_remove_file(&psmouse->ps2dev.serio->dev, 1463 &psmouse_attr_disable_gesture.dattr); 1464 1465 synaptics_reset(psmouse); 1466 kfree(priv); 1467 psmouse->private = NULL; 1468 } 1469 1470 static int synaptics_reconnect(struct psmouse *psmouse) 1471 { 1472 struct synaptics_data *priv = psmouse->private; 1473 struct synaptics_data old_priv = *priv; 1474 unsigned char param[2]; 1475 int retry = 0; 1476 int error; 1477 1478 do { 1479 psmouse_reset(psmouse); 1480 if (retry) { 1481 /* 1482 * On some boxes, right after resuming, the touchpad 1483 * needs some time to finish initializing (I assume 1484 * it needs time to calibrate) and start responding 1485 * to Synaptics-specific queries, so let's wait a 1486 * bit. 1487 */ 1488 ssleep(1); 1489 } 1490 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1491 error = synaptics_detect(psmouse, 0); 1492 } while (error && ++retry < 3); 1493 1494 if (error) 1495 return -1; 1496 1497 if (retry > 1) 1498 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1499 1500 if (synaptics_query_hardware(psmouse)) { 1501 psmouse_err(psmouse, "Unable to query device.\n"); 1502 return -1; 1503 } 1504 1505 if (synaptics_set_mode(psmouse)) { 1506 psmouse_err(psmouse, "Unable to initialize device.\n"); 1507 return -1; 1508 } 1509 1510 if (old_priv.identity != priv->identity || 1511 old_priv.model_id != priv->model_id || 1512 old_priv.capabilities != priv->capabilities || 1513 old_priv.ext_cap != priv->ext_cap) { 1514 psmouse_err(psmouse, 1515 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1516 old_priv.identity, priv->identity, 1517 old_priv.model_id, priv->model_id, 1518 old_priv.capabilities, priv->capabilities, 1519 old_priv.ext_cap, priv->ext_cap); 1520 return -1; 1521 } 1522 1523 return 0; 1524 } 1525 1526 static bool impaired_toshiba_kbc; 1527 1528 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1529 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1530 { 1531 /* Toshiba Satellite */ 1532 .matches = { 1533 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1534 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1535 }, 1536 }, 1537 { 1538 /* Toshiba Dynabook */ 1539 .matches = { 1540 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1541 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1542 }, 1543 }, 1544 { 1545 /* Toshiba Portege M300 */ 1546 .matches = { 1547 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1548 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1549 }, 1550 1551 }, 1552 { 1553 /* Toshiba Portege M300 */ 1554 .matches = { 1555 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1556 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1557 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1558 }, 1559 1560 }, 1561 #endif 1562 { } 1563 }; 1564 1565 static bool broken_olpc_ec; 1566 1567 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1568 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1569 { 1570 /* OLPC XO-1 or XO-1.5 */ 1571 .matches = { 1572 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1573 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1574 }, 1575 }, 1576 #endif 1577 { } 1578 }; 1579 1580 void __init synaptics_module_init(void) 1581 { 1582 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1583 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1584 } 1585 1586 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1587 { 1588 struct synaptics_data *priv; 1589 int err = -1; 1590 1591 /* 1592 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1593 * packet spew overloads the EC such that key presses on the keyboard 1594 * are missed. Given that, don't even attempt to use Absolute mode. 1595 * Relative mode seems to work just fine. 1596 */ 1597 if (absolute_mode && broken_olpc_ec) { 1598 psmouse_info(psmouse, 1599 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1600 return -ENODEV; 1601 } 1602 1603 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1604 if (!priv) 1605 return -ENOMEM; 1606 1607 psmouse_reset(psmouse); 1608 1609 if (synaptics_query_hardware(psmouse)) { 1610 psmouse_err(psmouse, "Unable to query device.\n"); 1611 goto init_fail; 1612 } 1613 1614 priv->absolute_mode = absolute_mode; 1615 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1616 priv->disable_gesture = true; 1617 1618 if (synaptics_set_mode(psmouse)) { 1619 psmouse_err(psmouse, "Unable to initialize device.\n"); 1620 goto init_fail; 1621 } 1622 1623 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1624 1625 psmouse_info(psmouse, 1626 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1627 SYN_ID_MODEL(priv->identity), 1628 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1629 priv->model_id, 1630 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1631 priv->board_id, priv->firmware_id); 1632 1633 set_input_params(psmouse, priv); 1634 1635 /* 1636 * Encode touchpad model so that it can be used to set 1637 * input device->id.version and be visible to userspace. 1638 * Because version is __u16 we have to drop something. 1639 * Hardware info bits seem to be good candidates as they 1640 * are documented to be for Synaptics corp. internal use. 1641 */ 1642 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1643 (priv->model_id & 0x000000ff); 1644 1645 if (absolute_mode) { 1646 psmouse->protocol_handler = synaptics_process_byte; 1647 psmouse->pktsize = 6; 1648 } else { 1649 /* Relative mode follows standard PS/2 mouse protocol */ 1650 psmouse->protocol_handler = psmouse_process_byte; 1651 psmouse->pktsize = 3; 1652 } 1653 1654 psmouse->set_rate = synaptics_set_rate; 1655 psmouse->disconnect = synaptics_disconnect; 1656 psmouse->reconnect = synaptics_reconnect; 1657 psmouse->cleanup = synaptics_reset; 1658 /* Synaptics can usually stay in sync without extra help */ 1659 psmouse->resync_time = 0; 1660 1661 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1662 synaptics_pt_create(psmouse); 1663 1664 /* 1665 * Toshiba's KBC seems to have trouble handling data from 1666 * Synaptics at full rate. Switch to a lower rate (roughly 1667 * the same rate as a standard PS/2 mouse). 1668 */ 1669 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1670 psmouse_info(psmouse, 1671 "Toshiba %s detected, limiting rate to 40pps.\n", 1672 dmi_get_system_info(DMI_PRODUCT_NAME)); 1673 psmouse->rate = 40; 1674 } 1675 1676 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1677 err = device_create_file(&psmouse->ps2dev.serio->dev, 1678 &psmouse_attr_disable_gesture.dattr); 1679 if (err) { 1680 psmouse_err(psmouse, 1681 "Failed to create disable_gesture attribute (%d)", 1682 err); 1683 goto init_fail; 1684 } 1685 } 1686 1687 return 0; 1688 1689 init_fail: 1690 kfree(priv); 1691 return err; 1692 } 1693 1694 int synaptics_init(struct psmouse *psmouse) 1695 { 1696 return __synaptics_init(psmouse, true); 1697 } 1698 1699 int synaptics_init_relative(struct psmouse *psmouse) 1700 { 1701 return __synaptics_init(psmouse, false); 1702 } 1703 1704 bool synaptics_supported(void) 1705 { 1706 return true; 1707 } 1708 1709 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1710 1711 void __init synaptics_module_init(void) 1712 { 1713 } 1714 1715 int synaptics_init(struct psmouse *psmouse) 1716 { 1717 return -ENOSYS; 1718 } 1719 1720 bool synaptics_supported(void) 1721 { 1722 return false; 1723 } 1724 1725 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1726