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/dmi.h> 28 #include <linux/input/mt.h> 29 #include <linux/serio.h> 30 #include <linux/libps2.h> 31 #include <linux/slab.h> 32 #include "psmouse.h" 33 #include "synaptics.h" 34 35 /* 36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 37 * section 2.3.2, which says that they should be valid regardless of the 38 * actual size of the sensor. 39 * Note that newer firmware allows querying device for maximum useable 40 * coordinates. 41 */ 42 #define XMIN_NOMINAL 1472 43 #define XMAX_NOMINAL 5472 44 #define YMIN_NOMINAL 1408 45 #define YMAX_NOMINAL 4448 46 47 /* 48 * Synaptics touchpads report the y coordinate from bottom to top, which is 49 * opposite from what userspace expects. 50 * This function is used to invert y before reporting. 51 */ 52 static int synaptics_invert_y(int y) 53 { 54 return YMAX_NOMINAL + YMIN_NOMINAL - y; 55 } 56 57 58 /***************************************************************************** 59 * Stuff we need even when we do not want native Synaptics support 60 ****************************************************************************/ 61 62 /* 63 * Set the synaptics touchpad mode byte by special commands 64 */ 65 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 66 { 67 unsigned char param[1]; 68 69 if (psmouse_sliced_command(psmouse, mode)) 70 return -1; 71 param[0] = SYN_PS_SET_MODE2; 72 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 73 return -1; 74 return 0; 75 } 76 77 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 78 { 79 struct ps2dev *ps2dev = &psmouse->ps2dev; 80 unsigned char param[4]; 81 82 param[0] = 0; 83 84 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 85 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 86 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 87 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 88 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 89 90 if (param[1] != 0x47) 91 return -ENODEV; 92 93 if (set_properties) { 94 psmouse->vendor = "Synaptics"; 95 psmouse->name = "TouchPad"; 96 } 97 98 return 0; 99 } 100 101 void synaptics_reset(struct psmouse *psmouse) 102 { 103 /* reset touchpad back to relative mode, gestures enabled */ 104 synaptics_mode_cmd(psmouse, 0); 105 } 106 107 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 108 109 /***************************************************************************** 110 * Synaptics communications functions 111 ****************************************************************************/ 112 113 /* 114 * Send a command to the synpatics touchpad by special commands 115 */ 116 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 117 { 118 if (psmouse_sliced_command(psmouse, c)) 119 return -1; 120 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 121 return -1; 122 return 0; 123 } 124 125 /* 126 * Read the model-id bytes from the touchpad 127 * see also SYN_MODEL_* macros 128 */ 129 static int synaptics_model_id(struct psmouse *psmouse) 130 { 131 struct synaptics_data *priv = psmouse->private; 132 unsigned char mi[3]; 133 134 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 135 return -1; 136 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 137 return 0; 138 } 139 140 /* 141 * Read the capability-bits from the touchpad 142 * see also the SYN_CAP_* macros 143 */ 144 static int synaptics_capability(struct psmouse *psmouse) 145 { 146 struct synaptics_data *priv = psmouse->private; 147 unsigned char cap[3]; 148 149 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 150 return -1; 151 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 152 priv->ext_cap = priv->ext_cap_0c = 0; 153 154 /* 155 * Older firmwares had submodel ID fixed to 0x47 156 */ 157 if (SYN_ID_FULL(priv->identity) < 0x705 && 158 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 159 return -1; 160 } 161 162 /* 163 * Unless capExtended is set the rest of the flags should be ignored 164 */ 165 if (!SYN_CAP_EXTENDED(priv->capabilities)) 166 priv->capabilities = 0; 167 168 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 169 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 170 psmouse_warn(psmouse, 171 "device claims to have extended capabilities, but I'm not able to read them.\n"); 172 } else { 173 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 174 175 /* 176 * if nExtBtn is greater than 8 it should be considered 177 * invalid and treated as 0 178 */ 179 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 180 priv->ext_cap &= 0xff0fff; 181 } 182 } 183 184 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 185 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 186 psmouse_warn(psmouse, 187 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 188 } else { 189 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 190 } 191 } 192 193 return 0; 194 } 195 196 /* 197 * Identify Touchpad 198 * See also the SYN_ID_* macros 199 */ 200 static int synaptics_identify(struct psmouse *psmouse) 201 { 202 struct synaptics_data *priv = psmouse->private; 203 unsigned char id[3]; 204 205 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 206 return -1; 207 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 208 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 209 return 0; 210 return -1; 211 } 212 213 /* 214 * Read touchpad resolution and maximum reported coordinates 215 * Resolution is left zero if touchpad does not support the query 216 */ 217 static int synaptics_resolution(struct psmouse *psmouse) 218 { 219 struct synaptics_data *priv = psmouse->private; 220 unsigned char resp[3]; 221 222 if (SYN_ID_MAJOR(priv->identity) < 4) 223 return 0; 224 225 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 226 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 227 priv->x_res = resp[0]; /* x resolution in units/mm */ 228 priv->y_res = resp[2]; /* y resolution in units/mm */ 229 } 230 } 231 232 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 233 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 234 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 235 psmouse_warn(psmouse, 236 "device claims to have max coordinates query, but I'm not able to read it.\n"); 237 } else { 238 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 239 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 240 } 241 } 242 243 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 244 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 245 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 246 psmouse_warn(psmouse, 247 "device claims to have min coordinates query, but I'm not able to read it.\n"); 248 } else { 249 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 250 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 251 } 252 } 253 254 return 0; 255 } 256 257 static int synaptics_query_hardware(struct psmouse *psmouse) 258 { 259 if (synaptics_identify(psmouse)) 260 return -1; 261 if (synaptics_model_id(psmouse)) 262 return -1; 263 if (synaptics_capability(psmouse)) 264 return -1; 265 if (synaptics_resolution(psmouse)) 266 return -1; 267 268 return 0; 269 } 270 271 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 272 { 273 struct synaptics_data *priv = psmouse->private; 274 275 priv->mode = SYN_BIT_ABSOLUTE_MODE; 276 if (SYN_ID_MAJOR(priv->identity) >= 4) 277 priv->mode |= SYN_BIT_DISABLE_GESTURE; 278 if (SYN_CAP_EXTENDED(priv->capabilities)) 279 priv->mode |= SYN_BIT_W_MODE; 280 281 if (synaptics_mode_cmd(psmouse, priv->mode)) 282 return -1; 283 284 return 0; 285 } 286 287 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 288 { 289 struct synaptics_data *priv = psmouse->private; 290 291 if (rate >= 80) { 292 priv->mode |= SYN_BIT_HIGH_RATE; 293 psmouse->rate = 80; 294 } else { 295 priv->mode &= ~SYN_BIT_HIGH_RATE; 296 psmouse->rate = 40; 297 } 298 299 synaptics_mode_cmd(psmouse, priv->mode); 300 } 301 302 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 303 { 304 static unsigned char param = 0xc8; 305 struct synaptics_data *priv = psmouse->private; 306 307 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 308 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 309 return 0; 310 311 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 312 return -1; 313 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 314 return -1; 315 316 /* Advanced gesture mode also sends multi finger data */ 317 priv->capabilities |= BIT(1); 318 319 return 0; 320 } 321 322 /***************************************************************************** 323 * Synaptics pass-through PS/2 port support 324 ****************************************************************************/ 325 static int synaptics_pt_write(struct serio *serio, unsigned char c) 326 { 327 struct psmouse *parent = serio_get_drvdata(serio->parent); 328 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 329 330 if (psmouse_sliced_command(parent, c)) 331 return -1; 332 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 333 return -1; 334 return 0; 335 } 336 337 static int synaptics_pt_start(struct serio *serio) 338 { 339 struct psmouse *parent = serio_get_drvdata(serio->parent); 340 struct synaptics_data *priv = parent->private; 341 342 serio_pause_rx(parent->ps2dev.serio); 343 priv->pt_port = serio; 344 serio_continue_rx(parent->ps2dev.serio); 345 346 return 0; 347 } 348 349 static void synaptics_pt_stop(struct serio *serio) 350 { 351 struct psmouse *parent = serio_get_drvdata(serio->parent); 352 struct synaptics_data *priv = parent->private; 353 354 serio_pause_rx(parent->ps2dev.serio); 355 priv->pt_port = NULL; 356 serio_continue_rx(parent->ps2dev.serio); 357 } 358 359 static int synaptics_is_pt_packet(unsigned char *buf) 360 { 361 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 362 } 363 364 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 365 { 366 struct psmouse *child = serio_get_drvdata(ptport); 367 368 if (child && child->state == PSMOUSE_ACTIVATED) { 369 serio_interrupt(ptport, packet[1], 0); 370 serio_interrupt(ptport, packet[4], 0); 371 serio_interrupt(ptport, packet[5], 0); 372 if (child->pktsize == 4) 373 serio_interrupt(ptport, packet[2], 0); 374 } else 375 serio_interrupt(ptport, packet[1], 0); 376 } 377 378 static void synaptics_pt_activate(struct psmouse *psmouse) 379 { 380 struct synaptics_data *priv = psmouse->private; 381 struct psmouse *child = serio_get_drvdata(priv->pt_port); 382 383 /* adjust the touchpad to child's choice of protocol */ 384 if (child) { 385 if (child->pktsize == 4) 386 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 387 else 388 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 389 390 if (synaptics_mode_cmd(psmouse, priv->mode)) 391 psmouse_warn(psmouse, 392 "failed to switch guest protocol\n"); 393 } 394 } 395 396 static void synaptics_pt_create(struct psmouse *psmouse) 397 { 398 struct serio *serio; 399 400 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 401 if (!serio) { 402 psmouse_err(psmouse, 403 "not enough memory for pass-through port\n"); 404 return; 405 } 406 407 serio->id.type = SERIO_PS_PSTHRU; 408 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 409 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 410 serio->write = synaptics_pt_write; 411 serio->start = synaptics_pt_start; 412 serio->stop = synaptics_pt_stop; 413 serio->parent = psmouse->ps2dev.serio; 414 415 psmouse->pt_activate = synaptics_pt_activate; 416 417 psmouse_info(psmouse, "serio: %s port at %s\n", 418 serio->name, psmouse->phys); 419 serio_register_port(serio); 420 } 421 422 /***************************************************************************** 423 * Functions to interpret the absolute mode packets 424 ****************************************************************************/ 425 426 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 427 int sgm, int agm) 428 { 429 state->count = count; 430 state->sgm = sgm; 431 state->agm = agm; 432 } 433 434 static void synaptics_parse_agm(const unsigned char buf[], 435 struct synaptics_data *priv, 436 struct synaptics_hw_state *hw) 437 { 438 struct synaptics_hw_state *agm = &priv->agm; 439 int agm_packet_type; 440 441 agm_packet_type = (buf[5] & 0x30) >> 4; 442 switch (agm_packet_type) { 443 case 1: 444 /* Gesture packet: (x, y, z) half resolution */ 445 agm->w = hw->w; 446 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 447 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 448 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 449 break; 450 451 case 2: 452 /* AGM-CONTACT packet: (count, sgm, agm) */ 453 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 454 break; 455 456 default: 457 break; 458 } 459 460 /* Record that at least one AGM has been received since last SGM */ 461 priv->agm_pending = true; 462 } 463 464 static int synaptics_parse_hw_state(const unsigned char buf[], 465 struct synaptics_data *priv, 466 struct synaptics_hw_state *hw) 467 { 468 memset(hw, 0, sizeof(struct synaptics_hw_state)); 469 470 if (SYN_MODEL_NEWABS(priv->model_id)) { 471 hw->w = (((buf[0] & 0x30) >> 2) | 472 ((buf[0] & 0x04) >> 1) | 473 ((buf[3] & 0x04) >> 2)); 474 475 hw->left = (buf[0] & 0x01) ? 1 : 0; 476 hw->right = (buf[0] & 0x02) ? 1 : 0; 477 478 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 479 /* 480 * Clickpad's button is transmitted as middle button, 481 * however, since it is primary button, we will report 482 * it as BTN_LEFT. 483 */ 484 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 485 486 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 487 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 488 if (hw->w == 2) 489 hw->scroll = (signed char)(buf[1]); 490 } 491 492 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 493 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 494 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 495 } 496 497 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 498 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 499 hw->w == 2) { 500 synaptics_parse_agm(buf, priv, hw); 501 return 1; 502 } 503 504 hw->x = (((buf[3] & 0x10) << 8) | 505 ((buf[1] & 0x0f) << 8) | 506 buf[4]); 507 hw->y = (((buf[3] & 0x20) << 7) | 508 ((buf[1] & 0xf0) << 4) | 509 buf[5]); 510 hw->z = buf[2]; 511 512 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 513 ((buf[0] ^ buf[3]) & 0x02)) { 514 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 515 default: 516 /* 517 * if nExtBtn is greater than 8 it should be 518 * considered invalid and treated as 0 519 */ 520 break; 521 case 8: 522 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 523 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 524 case 6: 525 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 526 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 527 case 4: 528 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 529 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 530 case 2: 531 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 532 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 533 } 534 } 535 } else { 536 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 537 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 538 539 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 540 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 541 542 hw->left = (buf[0] & 0x01) ? 1 : 0; 543 hw->right = (buf[0] & 0x02) ? 1 : 0; 544 } 545 546 return 0; 547 } 548 549 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 550 bool active, int x, int y) 551 { 552 input_mt_slot(dev, slot); 553 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 554 if (active) { 555 input_report_abs(dev, ABS_MT_POSITION_X, x); 556 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 557 } 558 } 559 560 static void synaptics_report_semi_mt_data(struct input_dev *dev, 561 const struct synaptics_hw_state *a, 562 const struct synaptics_hw_state *b, 563 int num_fingers) 564 { 565 if (num_fingers >= 2) { 566 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 567 min(a->y, b->y)); 568 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 569 max(a->y, b->y)); 570 } else if (num_fingers == 1) { 571 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 572 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 573 } else { 574 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 575 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 576 } 577 } 578 579 static void synaptics_report_buttons(struct psmouse *psmouse, 580 const struct synaptics_hw_state *hw) 581 { 582 struct input_dev *dev = psmouse->dev; 583 struct synaptics_data *priv = psmouse->private; 584 int i; 585 586 input_report_key(dev, BTN_LEFT, hw->left); 587 input_report_key(dev, BTN_RIGHT, hw->right); 588 589 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 590 input_report_key(dev, BTN_MIDDLE, hw->middle); 591 592 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 593 input_report_key(dev, BTN_FORWARD, hw->up); 594 input_report_key(dev, BTN_BACK, hw->down); 595 } 596 597 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 598 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 599 } 600 601 static void synaptics_report_slot(struct input_dev *dev, int slot, 602 const struct synaptics_hw_state *hw) 603 { 604 input_mt_slot(dev, slot); 605 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 606 if (!hw) 607 return; 608 609 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 610 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 611 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 612 } 613 614 static void synaptics_report_mt_data(struct psmouse *psmouse, 615 struct synaptics_mt_state *mt_state, 616 const struct synaptics_hw_state *sgm) 617 { 618 struct input_dev *dev = psmouse->dev; 619 struct synaptics_data *priv = psmouse->private; 620 struct synaptics_hw_state *agm = &priv->agm; 621 struct synaptics_mt_state *old = &priv->mt_state; 622 623 switch (mt_state->count) { 624 case 0: 625 synaptics_report_slot(dev, 0, NULL); 626 synaptics_report_slot(dev, 1, NULL); 627 break; 628 case 1: 629 if (mt_state->sgm == -1) { 630 synaptics_report_slot(dev, 0, NULL); 631 synaptics_report_slot(dev, 1, NULL); 632 } else if (mt_state->sgm == 0) { 633 synaptics_report_slot(dev, 0, sgm); 634 synaptics_report_slot(dev, 1, NULL); 635 } else { 636 synaptics_report_slot(dev, 0, NULL); 637 synaptics_report_slot(dev, 1, sgm); 638 } 639 break; 640 default: 641 /* 642 * If the finger slot contained in SGM is valid, and either 643 * hasn't changed, or is new, then report SGM in MTB slot 0. 644 * Otherwise, empty MTB slot 0. 645 */ 646 if (mt_state->sgm != -1 && 647 (mt_state->sgm == old->sgm || old->sgm == -1)) 648 synaptics_report_slot(dev, 0, sgm); 649 else 650 synaptics_report_slot(dev, 0, NULL); 651 652 /* 653 * If the finger slot contained in AGM is valid, and either 654 * hasn't changed, or is new, then report AGM in MTB slot 1. 655 * Otherwise, empty MTB slot 1. 656 */ 657 if (mt_state->agm != -1 && 658 (mt_state->agm == old->agm || old->agm == -1)) 659 synaptics_report_slot(dev, 1, agm); 660 else 661 synaptics_report_slot(dev, 1, NULL); 662 break; 663 } 664 665 /* Don't use active slot count to generate BTN_TOOL events. */ 666 input_mt_report_pointer_emulation(dev, false); 667 668 /* Send the number of fingers reported by touchpad itself. */ 669 input_mt_report_finger_count(dev, mt_state->count); 670 671 synaptics_report_buttons(psmouse, sgm); 672 673 input_sync(dev); 674 } 675 676 /* Handle case where mt_state->count = 0 */ 677 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 678 struct synaptics_mt_state *mt_state) 679 { 680 synaptics_mt_state_set(mt_state, 0, -1, -1); 681 priv->mt_state_lost = false; 682 } 683 684 /* Handle case where mt_state->count = 1 */ 685 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 686 struct synaptics_mt_state *mt_state) 687 { 688 struct synaptics_hw_state *agm = &priv->agm; 689 struct synaptics_mt_state *old = &priv->mt_state; 690 691 /* 692 * If the last AGM was (0,0,0), and there is only one finger left, 693 * then we absolutely know that SGM contains slot 0, and all other 694 * fingers have been removed. 695 */ 696 if (priv->agm_pending && agm->z == 0) { 697 synaptics_mt_state_set(mt_state, 1, 0, -1); 698 priv->mt_state_lost = false; 699 return; 700 } 701 702 switch (old->count) { 703 case 0: 704 synaptics_mt_state_set(mt_state, 1, 0, -1); 705 break; 706 case 1: 707 /* 708 * If mt_state_lost, then the previous transition was 3->1, 709 * and SGM now contains either slot 0 or 1, but we don't know 710 * which. So, we just assume that the SGM now contains slot 1. 711 * 712 * If pending AGM and either: 713 * (a) the previous SGM slot contains slot 0, or 714 * (b) there was no SGM slot 715 * then, the SGM now contains slot 1 716 * 717 * Case (a) happens with very rapid "drum roll" gestures, where 718 * slot 0 finger is lifted and a new slot 1 finger touches 719 * within one reporting interval. 720 * 721 * Case (b) happens if initially two or more fingers tap 722 * briefly, and all but one lift before the end of the first 723 * reporting interval. 724 * 725 * (In both these cases, slot 0 will becomes empty, so SGM 726 * contains slot 1 with the new finger) 727 * 728 * Else, if there was no previous SGM, it now contains slot 0. 729 * 730 * Otherwise, SGM still contains the same slot. 731 */ 732 if (priv->mt_state_lost || 733 (priv->agm_pending && old->sgm <= 0)) 734 synaptics_mt_state_set(mt_state, 1, 1, -1); 735 else if (old->sgm == -1) 736 synaptics_mt_state_set(mt_state, 1, 0, -1); 737 break; 738 case 2: 739 /* 740 * If mt_state_lost, we don't know which finger SGM contains. 741 * 742 * So, report 1 finger, but with both slots empty. 743 * We will use slot 1 on subsequent 1->1 744 */ 745 if (priv->mt_state_lost) { 746 synaptics_mt_state_set(mt_state, 1, -1, -1); 747 break; 748 } 749 /* 750 * Since the last AGM was NOT (0,0,0), it was the finger in 751 * slot 0 that has been removed. 752 * So, SGM now contains previous AGM's slot, and AGM is now 753 * empty. 754 */ 755 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 756 break; 757 case 3: 758 /* 759 * Since last AGM was not (0,0,0), we don't know which finger 760 * is left. 761 * 762 * So, report 1 finger, but with both slots empty. 763 * We will use slot 1 on subsequent 1->1 764 */ 765 synaptics_mt_state_set(mt_state, 1, -1, -1); 766 priv->mt_state_lost = true; 767 break; 768 case 4: 769 case 5: 770 /* mt_state was updated by AGM-CONTACT packet */ 771 break; 772 } 773 } 774 775 /* Handle case where mt_state->count = 2 */ 776 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 777 struct synaptics_mt_state *mt_state) 778 { 779 struct synaptics_mt_state *old = &priv->mt_state; 780 781 switch (old->count) { 782 case 0: 783 synaptics_mt_state_set(mt_state, 2, 0, 1); 784 break; 785 case 1: 786 /* 787 * If previous SGM contained slot 1 or higher, SGM now contains 788 * slot 0 (the newly touching finger) and AGM contains SGM's 789 * previous slot. 790 * 791 * Otherwise, SGM still contains slot 0 and AGM now contains 792 * slot 1. 793 */ 794 if (old->sgm >= 1) 795 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 796 else 797 synaptics_mt_state_set(mt_state, 2, 0, 1); 798 break; 799 case 2: 800 /* 801 * If mt_state_lost, SGM now contains either finger 1 or 2, but 802 * we don't know which. 803 * So, we just assume that the SGM contains slot 0 and AGM 1. 804 */ 805 if (priv->mt_state_lost) 806 synaptics_mt_state_set(mt_state, 2, 0, 1); 807 /* 808 * Otherwise, use the same mt_state, since it either hasn't 809 * changed, or was updated by a recently received AGM-CONTACT 810 * packet. 811 */ 812 break; 813 case 3: 814 /* 815 * 3->2 transitions have two unsolvable problems: 816 * 1) no indication is given which finger was removed 817 * 2) no way to tell if agm packet was for finger 3 818 * before 3->2, or finger 2 after 3->2. 819 * 820 * So, report 2 fingers, but empty all slots. 821 * We will guess slots [0,1] on subsequent 2->2. 822 */ 823 synaptics_mt_state_set(mt_state, 2, -1, -1); 824 priv->mt_state_lost = true; 825 break; 826 case 4: 827 case 5: 828 /* mt_state was updated by AGM-CONTACT packet */ 829 break; 830 } 831 } 832 833 /* Handle case where mt_state->count = 3 */ 834 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 835 struct synaptics_mt_state *mt_state) 836 { 837 struct synaptics_mt_state *old = &priv->mt_state; 838 839 switch (old->count) { 840 case 0: 841 synaptics_mt_state_set(mt_state, 3, 0, 2); 842 break; 843 case 1: 844 /* 845 * If previous SGM contained slot 2 or higher, SGM now contains 846 * slot 0 (one of the newly touching fingers) and AGM contains 847 * SGM's previous slot. 848 * 849 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 850 */ 851 if (old->sgm >= 2) 852 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 853 else 854 synaptics_mt_state_set(mt_state, 3, 0, 2); 855 break; 856 case 2: 857 /* 858 * If the AGM previously contained slot 3 or higher, then the 859 * newly touching finger is in the lowest available slot. 860 * 861 * If SGM was previously 1 or higher, then the new SGM is 862 * now slot 0 (with a new finger), otherwise, the new finger 863 * is now in a hidden slot between 0 and AGM's slot. 864 * 865 * In all such cases, the SGM now contains slot 0, and the AGM 866 * continues to contain the same slot as before. 867 */ 868 if (old->agm >= 3) { 869 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 870 break; 871 } 872 873 /* 874 * After some 3->1 and all 3->2 transitions, we lose track 875 * of which slot is reported by SGM and AGM. 876 * 877 * For 2->3 in this state, report 3 fingers, but empty all 878 * slots, and we will guess (0,2) on a subsequent 0->3. 879 * 880 * To userspace, the resulting transition will look like: 881 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 882 */ 883 if (priv->mt_state_lost) { 884 synaptics_mt_state_set(mt_state, 3, -1, -1); 885 break; 886 } 887 888 /* 889 * If the (SGM,AGM) really previously contained slots (0, 1), 890 * then we cannot know what slot was just reported by the AGM, 891 * because the 2->3 transition can occur either before or after 892 * the AGM packet. Thus, this most recent AGM could contain 893 * either the same old slot 1 or the new slot 2. 894 * Subsequent AGMs will be reporting slot 2. 895 * 896 * To userspace, the resulting transition will look like: 897 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 898 */ 899 synaptics_mt_state_set(mt_state, 3, 0, -1); 900 break; 901 case 3: 902 /* 903 * If, for whatever reason, the previous agm was invalid, 904 * Assume SGM now contains slot 0, AGM now contains slot 2. 905 */ 906 if (old->agm <= 2) 907 synaptics_mt_state_set(mt_state, 3, 0, 2); 908 /* 909 * mt_state either hasn't changed, or was updated by a recently 910 * received AGM-CONTACT packet. 911 */ 912 break; 913 914 case 4: 915 case 5: 916 /* mt_state was updated by AGM-CONTACT packet */ 917 break; 918 } 919 } 920 921 /* Handle case where mt_state->count = 4, or = 5 */ 922 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 923 struct synaptics_mt_state *mt_state) 924 { 925 /* mt_state was updated correctly by AGM-CONTACT packet */ 926 priv->mt_state_lost = false; 927 } 928 929 static void synaptics_image_sensor_process(struct psmouse *psmouse, 930 struct synaptics_hw_state *sgm) 931 { 932 struct synaptics_data *priv = psmouse->private; 933 struct synaptics_hw_state *agm = &priv->agm; 934 struct synaptics_mt_state mt_state; 935 936 /* Initialize using current mt_state (as updated by last agm) */ 937 mt_state = agm->mt_state; 938 939 /* 940 * Update mt_state using the new finger count and current mt_state. 941 */ 942 if (sgm->z == 0) 943 synaptics_image_sensor_0f(priv, &mt_state); 944 else if (sgm->w >= 4) 945 synaptics_image_sensor_1f(priv, &mt_state); 946 else if (sgm->w == 0) 947 synaptics_image_sensor_2f(priv, &mt_state); 948 else if (sgm->w == 1 && mt_state.count <= 3) 949 synaptics_image_sensor_3f(priv, &mt_state); 950 else 951 synaptics_image_sensor_45f(priv, &mt_state); 952 953 /* Send resulting input events to user space */ 954 synaptics_report_mt_data(psmouse, &mt_state, sgm); 955 956 /* Store updated mt_state */ 957 priv->mt_state = agm->mt_state = mt_state; 958 priv->agm_pending = false; 959 } 960 961 /* 962 * called for each full received packet from the touchpad 963 */ 964 static void synaptics_process_packet(struct psmouse *psmouse) 965 { 966 struct input_dev *dev = psmouse->dev; 967 struct synaptics_data *priv = psmouse->private; 968 struct synaptics_hw_state hw; 969 int num_fingers; 970 int finger_width; 971 972 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 973 return; 974 975 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 976 synaptics_image_sensor_process(psmouse, &hw); 977 return; 978 } 979 980 if (hw.scroll) { 981 priv->scroll += hw.scroll; 982 983 while (priv->scroll >= 4) { 984 input_report_key(dev, BTN_BACK, !hw.down); 985 input_sync(dev); 986 input_report_key(dev, BTN_BACK, hw.down); 987 input_sync(dev); 988 priv->scroll -= 4; 989 } 990 while (priv->scroll <= -4) { 991 input_report_key(dev, BTN_FORWARD, !hw.up); 992 input_sync(dev); 993 input_report_key(dev, BTN_FORWARD, hw.up); 994 input_sync(dev); 995 priv->scroll += 4; 996 } 997 return; 998 } 999 1000 if (hw.z > 0 && hw.x > 1) { 1001 num_fingers = 1; 1002 finger_width = 5; 1003 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1004 switch (hw.w) { 1005 case 0 ... 1: 1006 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1007 num_fingers = hw.w + 2; 1008 break; 1009 case 2: 1010 if (SYN_MODEL_PEN(priv->model_id)) 1011 ; /* Nothing, treat a pen as a single finger */ 1012 break; 1013 case 4 ... 15: 1014 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1015 finger_width = hw.w; 1016 break; 1017 } 1018 } 1019 } else { 1020 num_fingers = 0; 1021 finger_width = 0; 1022 } 1023 1024 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1025 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1026 num_fingers); 1027 1028 /* Post events 1029 * BTN_TOUCH has to be first as mousedev relies on it when doing 1030 * absolute -> relative conversion 1031 */ 1032 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1033 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1034 1035 if (num_fingers > 0) { 1036 input_report_abs(dev, ABS_X, hw.x); 1037 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1038 } 1039 input_report_abs(dev, ABS_PRESSURE, hw.z); 1040 1041 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1042 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1043 1044 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1045 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1046 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1047 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1048 } 1049 1050 synaptics_report_buttons(psmouse, &hw); 1051 1052 input_sync(dev); 1053 } 1054 1055 static int synaptics_validate_byte(struct psmouse *psmouse, 1056 int idx, unsigned char pkt_type) 1057 { 1058 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1059 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1060 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1061 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1062 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1063 const char *packet = psmouse->packet; 1064 1065 if (idx < 0 || idx > 4) 1066 return 0; 1067 1068 switch (pkt_type) { 1069 1070 case SYN_NEWABS: 1071 case SYN_NEWABS_RELAXED: 1072 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1073 1074 case SYN_NEWABS_STRICT: 1075 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1076 1077 case SYN_OLDABS: 1078 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1079 1080 default: 1081 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1082 return 0; 1083 } 1084 } 1085 1086 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1087 { 1088 int i; 1089 1090 for (i = 0; i < 5; i++) 1091 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1092 psmouse_info(psmouse, "using relaxed packet validation\n"); 1093 return SYN_NEWABS_RELAXED; 1094 } 1095 1096 return SYN_NEWABS_STRICT; 1097 } 1098 1099 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1100 { 1101 struct synaptics_data *priv = psmouse->private; 1102 1103 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1104 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1105 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1106 1107 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1108 synaptics_is_pt_packet(psmouse->packet)) { 1109 if (priv->pt_port) 1110 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1111 } else 1112 synaptics_process_packet(psmouse); 1113 1114 return PSMOUSE_FULL_PACKET; 1115 } 1116 1117 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1118 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1119 } 1120 1121 /***************************************************************************** 1122 * Driver initialization/cleanup functions 1123 ****************************************************************************/ 1124 static void set_abs_position_params(struct input_dev *dev, 1125 struct synaptics_data *priv, int x_code, 1126 int y_code) 1127 { 1128 int x_min = priv->x_min ?: XMIN_NOMINAL; 1129 int x_max = priv->x_max ?: XMAX_NOMINAL; 1130 int y_min = priv->y_min ?: YMIN_NOMINAL; 1131 int y_max = priv->y_max ?: YMAX_NOMINAL; 1132 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1133 SYN_REDUCED_FILTER_FUZZ : 0; 1134 1135 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1136 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1137 input_abs_set_res(dev, x_code, priv->x_res); 1138 input_abs_set_res(dev, y_code, priv->y_res); 1139 } 1140 1141 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 1142 { 1143 int i; 1144 1145 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1146 1147 __set_bit(EV_ABS, dev->evbit); 1148 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1149 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1150 1151 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1152 input_mt_init_slots(dev, 2); 1153 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1154 ABS_MT_POSITION_Y); 1155 /* Image sensors can report per-contact pressure */ 1156 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1157 1158 /* Image sensors can signal 4 and 5 finger clicks */ 1159 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1160 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1161 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1162 /* Non-image sensors with AGM use semi-mt */ 1163 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 1164 input_mt_init_slots(dev, 2); 1165 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1166 ABS_MT_POSITION_Y); 1167 } 1168 1169 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1170 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1171 1172 __set_bit(EV_KEY, dev->evbit); 1173 __set_bit(BTN_TOUCH, dev->keybit); 1174 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1175 __set_bit(BTN_LEFT, dev->keybit); 1176 __set_bit(BTN_RIGHT, dev->keybit); 1177 1178 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1179 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1180 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1181 } 1182 1183 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1184 __set_bit(BTN_MIDDLE, dev->keybit); 1185 1186 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1187 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1188 __set_bit(BTN_FORWARD, dev->keybit); 1189 __set_bit(BTN_BACK, dev->keybit); 1190 } 1191 1192 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1193 __set_bit(BTN_0 + i, dev->keybit); 1194 1195 __clear_bit(EV_REL, dev->evbit); 1196 __clear_bit(REL_X, dev->relbit); 1197 __clear_bit(REL_Y, dev->relbit); 1198 1199 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1200 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1201 /* Clickpads report only left button */ 1202 __clear_bit(BTN_RIGHT, dev->keybit); 1203 __clear_bit(BTN_MIDDLE, dev->keybit); 1204 } 1205 } 1206 1207 static void synaptics_disconnect(struct psmouse *psmouse) 1208 { 1209 synaptics_reset(psmouse); 1210 kfree(psmouse->private); 1211 psmouse->private = NULL; 1212 } 1213 1214 static int synaptics_reconnect(struct psmouse *psmouse) 1215 { 1216 struct synaptics_data *priv = psmouse->private; 1217 struct synaptics_data old_priv = *priv; 1218 int retry = 0; 1219 int error; 1220 1221 do { 1222 psmouse_reset(psmouse); 1223 error = synaptics_detect(psmouse, 0); 1224 } while (error && ++retry < 3); 1225 1226 if (error) 1227 return -1; 1228 1229 if (retry > 1) 1230 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1231 1232 if (synaptics_query_hardware(psmouse)) { 1233 psmouse_err(psmouse, "Unable to query device.\n"); 1234 return -1; 1235 } 1236 1237 if (synaptics_set_absolute_mode(psmouse)) { 1238 psmouse_err(psmouse, "Unable to initialize device.\n"); 1239 return -1; 1240 } 1241 1242 if (synaptics_set_advanced_gesture_mode(psmouse)) { 1243 psmouse_err(psmouse, 1244 "Advanced gesture mode reconnect failed.\n"); 1245 return -1; 1246 } 1247 1248 if (old_priv.identity != priv->identity || 1249 old_priv.model_id != priv->model_id || 1250 old_priv.capabilities != priv->capabilities || 1251 old_priv.ext_cap != priv->ext_cap) { 1252 psmouse_err(psmouse, 1253 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1254 old_priv.identity, priv->identity, 1255 old_priv.model_id, priv->model_id, 1256 old_priv.capabilities, priv->capabilities, 1257 old_priv.ext_cap, priv->ext_cap); 1258 return -1; 1259 } 1260 1261 return 0; 1262 } 1263 1264 static bool impaired_toshiba_kbc; 1265 1266 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 1267 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1268 { 1269 /* Toshiba Satellite */ 1270 .matches = { 1271 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1272 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1273 }, 1274 }, 1275 { 1276 /* Toshiba Dynabook */ 1277 .matches = { 1278 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1279 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1280 }, 1281 }, 1282 { 1283 /* Toshiba Portege M300 */ 1284 .matches = { 1285 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1286 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1287 }, 1288 1289 }, 1290 { 1291 /* Toshiba Portege M300 */ 1292 .matches = { 1293 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1294 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1295 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1296 }, 1297 1298 }, 1299 #endif 1300 { } 1301 }; 1302 1303 static bool broken_olpc_ec; 1304 1305 static const struct dmi_system_id __initconst olpc_dmi_table[] = { 1306 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1307 { 1308 /* OLPC XO-1 or XO-1.5 */ 1309 .matches = { 1310 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1311 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1312 }, 1313 }, 1314 #endif 1315 { } 1316 }; 1317 1318 void __init synaptics_module_init(void) 1319 { 1320 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1321 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1322 } 1323 1324 int synaptics_init(struct psmouse *psmouse) 1325 { 1326 struct synaptics_data *priv; 1327 1328 /* 1329 * The OLPC XO has issues with Synaptics' absolute mode; similarly to 1330 * the HGPK, it quickly degrades and the hardware becomes jumpy and 1331 * overly sensitive. Not only that, but the constant packet spew 1332 * (even at a lowered 40pps rate) overloads the EC such that key 1333 * presses on the keyboard are missed. Given all of that, don't 1334 * even attempt to use Synaptics mode. Relative mode seems to work 1335 * just fine. 1336 */ 1337 if (broken_olpc_ec) { 1338 psmouse_info(psmouse, 1339 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1340 return -ENODEV; 1341 } 1342 1343 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1344 if (!priv) 1345 return -ENOMEM; 1346 1347 psmouse_reset(psmouse); 1348 1349 if (synaptics_query_hardware(psmouse)) { 1350 psmouse_err(psmouse, "Unable to query device.\n"); 1351 goto init_fail; 1352 } 1353 1354 if (synaptics_set_absolute_mode(psmouse)) { 1355 psmouse_err(psmouse, "Unable to initialize device.\n"); 1356 goto init_fail; 1357 } 1358 1359 if (synaptics_set_advanced_gesture_mode(psmouse)) { 1360 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 1361 goto init_fail; 1362 } 1363 1364 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1365 1366 psmouse_info(psmouse, 1367 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 1368 SYN_ID_MODEL(priv->identity), 1369 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1370 priv->model_id, 1371 priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 1372 1373 set_input_params(psmouse->dev, priv); 1374 1375 /* 1376 * Encode touchpad model so that it can be used to set 1377 * input device->id.version and be visible to userspace. 1378 * Because version is __u16 we have to drop something. 1379 * Hardware info bits seem to be good candidates as they 1380 * are documented to be for Synaptics corp. internal use. 1381 */ 1382 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1383 (priv->model_id & 0x000000ff); 1384 1385 psmouse->protocol_handler = synaptics_process_byte; 1386 psmouse->set_rate = synaptics_set_rate; 1387 psmouse->disconnect = synaptics_disconnect; 1388 psmouse->reconnect = synaptics_reconnect; 1389 psmouse->cleanup = synaptics_reset; 1390 psmouse->pktsize = 6; 1391 /* Synaptics can usually stay in sync without extra help */ 1392 psmouse->resync_time = 0; 1393 1394 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1395 synaptics_pt_create(psmouse); 1396 1397 /* 1398 * Toshiba's KBC seems to have trouble handling data from 1399 * Synaptics at full rate. Switch to a lower rate (roughly 1400 * the same rate as a standard PS/2 mouse). 1401 */ 1402 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1403 psmouse_info(psmouse, 1404 "Toshiba %s detected, limiting rate to 40pps.\n", 1405 dmi_get_system_info(DMI_PRODUCT_NAME)); 1406 psmouse->rate = 40; 1407 } 1408 1409 return 0; 1410 1411 init_fail: 1412 kfree(priv); 1413 return -1; 1414 } 1415 1416 bool synaptics_supported(void) 1417 { 1418 return true; 1419 } 1420 1421 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1422 1423 void __init synaptics_module_init(void) 1424 { 1425 } 1426 1427 int synaptics_init(struct psmouse *psmouse) 1428 { 1429 return -ENOSYS; 1430 } 1431 1432 bool synaptics_supported(void) 1433 { 1434 return false; 1435 } 1436 1437 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1438