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_NOMINAL 1472 44 #define XMAX_NOMINAL 5472 45 #define YMIN_NOMINAL 1408 46 #define YMAX_NOMINAL 4448 47 48 /* 49 * Synaptics touchpads report the y coordinate from bottom to top, which is 50 * opposite from what userspace expects. 51 * This function is used to invert y before reporting. 52 */ 53 static int synaptics_invert_y(int y) 54 { 55 return YMAX_NOMINAL + YMIN_NOMINAL - y; 56 } 57 58 59 /***************************************************************************** 60 * Stuff we need even when we do not want native Synaptics support 61 ****************************************************************************/ 62 63 /* 64 * Set the synaptics touchpad mode byte by special commands 65 */ 66 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 67 { 68 unsigned char param[1]; 69 70 if (psmouse_sliced_command(psmouse, mode)) 71 return -1; 72 param[0] = SYN_PS_SET_MODE2; 73 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 74 return -1; 75 return 0; 76 } 77 78 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 79 { 80 struct ps2dev *ps2dev = &psmouse->ps2dev; 81 unsigned char param[4]; 82 83 param[0] = 0; 84 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_SETRES); 89 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 90 91 if (param[1] != 0x47) 92 return -ENODEV; 93 94 if (set_properties) { 95 psmouse->vendor = "Synaptics"; 96 psmouse->name = "TouchPad"; 97 } 98 99 return 0; 100 } 101 102 void synaptics_reset(struct psmouse *psmouse) 103 { 104 /* reset touchpad back to relative mode, gestures enabled */ 105 synaptics_mode_cmd(psmouse, 0); 106 } 107 108 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 109 110 /***************************************************************************** 111 * Synaptics communications functions 112 ****************************************************************************/ 113 114 /* 115 * Send a command to the synpatics touchpad by special commands 116 */ 117 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 118 { 119 if (psmouse_sliced_command(psmouse, c)) 120 return -1; 121 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 122 return -1; 123 return 0; 124 } 125 126 /* 127 * Read the model-id bytes from the touchpad 128 * see also SYN_MODEL_* macros 129 */ 130 static int synaptics_model_id(struct psmouse *psmouse) 131 { 132 struct synaptics_data *priv = psmouse->private; 133 unsigned char mi[3]; 134 135 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 136 return -1; 137 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 138 return 0; 139 } 140 141 /* 142 * Read the capability-bits from the touchpad 143 * see also the SYN_CAP_* macros 144 */ 145 static int synaptics_capability(struct psmouse *psmouse) 146 { 147 struct synaptics_data *priv = psmouse->private; 148 unsigned char cap[3]; 149 150 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 151 return -1; 152 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 153 priv->ext_cap = priv->ext_cap_0c = 0; 154 155 /* 156 * Older firmwares had submodel ID fixed to 0x47 157 */ 158 if (SYN_ID_FULL(priv->identity) < 0x705 && 159 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 160 return -1; 161 } 162 163 /* 164 * Unless capExtended is set the rest of the flags should be ignored 165 */ 166 if (!SYN_CAP_EXTENDED(priv->capabilities)) 167 priv->capabilities = 0; 168 169 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 170 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 171 psmouse_warn(psmouse, 172 "device claims to have extended capabilities, but I'm not able to read them.\n"); 173 } else { 174 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 175 176 /* 177 * if nExtBtn is greater than 8 it should be considered 178 * invalid and treated as 0 179 */ 180 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 181 priv->ext_cap &= 0xff0fff; 182 } 183 } 184 185 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 186 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 187 psmouse_warn(psmouse, 188 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 189 } else { 190 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 191 } 192 } 193 194 return 0; 195 } 196 197 /* 198 * Identify Touchpad 199 * See also the SYN_ID_* macros 200 */ 201 static int synaptics_identify(struct psmouse *psmouse) 202 { 203 struct synaptics_data *priv = psmouse->private; 204 unsigned char id[3]; 205 206 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 207 return -1; 208 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 209 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 210 return 0; 211 return -1; 212 } 213 214 /* 215 * Read touchpad resolution and maximum reported coordinates 216 * Resolution is left zero if touchpad does not support the query 217 */ 218 static int synaptics_resolution(struct psmouse *psmouse) 219 { 220 struct synaptics_data *priv = psmouse->private; 221 unsigned char resp[3]; 222 223 if (SYN_ID_MAJOR(priv->identity) < 4) 224 return 0; 225 226 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 227 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 228 priv->x_res = resp[0]; /* x resolution in units/mm */ 229 priv->y_res = resp[2]; /* y resolution in units/mm */ 230 } 231 } 232 233 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 234 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 235 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 236 psmouse_warn(psmouse, 237 "device claims to have max coordinates query, but I'm not able to read it.\n"); 238 } else { 239 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 240 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 241 } 242 } 243 244 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 245 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 246 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 247 psmouse_warn(psmouse, 248 "device claims to have min coordinates query, but I'm not able to read it.\n"); 249 } else { 250 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 251 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 252 } 253 } 254 255 return 0; 256 } 257 258 static int synaptics_query_hardware(struct psmouse *psmouse) 259 { 260 if (synaptics_identify(psmouse)) 261 return -1; 262 if (synaptics_model_id(psmouse)) 263 return -1; 264 if (synaptics_capability(psmouse)) 265 return -1; 266 if (synaptics_resolution(psmouse)) 267 return -1; 268 269 return 0; 270 } 271 272 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 273 { 274 struct synaptics_data *priv = psmouse->private; 275 276 priv->mode = SYN_BIT_ABSOLUTE_MODE; 277 if (SYN_ID_MAJOR(priv->identity) >= 4) 278 priv->mode |= SYN_BIT_DISABLE_GESTURE; 279 if (SYN_CAP_EXTENDED(priv->capabilities)) 280 priv->mode |= SYN_BIT_W_MODE; 281 282 if (synaptics_mode_cmd(psmouse, priv->mode)) 283 return -1; 284 285 return 0; 286 } 287 288 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 289 { 290 struct synaptics_data *priv = psmouse->private; 291 292 if (rate >= 80) { 293 priv->mode |= SYN_BIT_HIGH_RATE; 294 psmouse->rate = 80; 295 } else { 296 priv->mode &= ~SYN_BIT_HIGH_RATE; 297 psmouse->rate = 40; 298 } 299 300 synaptics_mode_cmd(psmouse, priv->mode); 301 } 302 303 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 304 { 305 static unsigned char param = 0xc8; 306 struct synaptics_data *priv = psmouse->private; 307 308 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 309 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 310 return 0; 311 312 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 313 return -1; 314 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 315 return -1; 316 317 /* Advanced gesture mode also sends multi finger data */ 318 priv->capabilities |= BIT(1); 319 320 return 0; 321 } 322 323 /***************************************************************************** 324 * Synaptics pass-through PS/2 port support 325 ****************************************************************************/ 326 static int synaptics_pt_write(struct serio *serio, unsigned char c) 327 { 328 struct psmouse *parent = serio_get_drvdata(serio->parent); 329 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 330 331 if (psmouse_sliced_command(parent, c)) 332 return -1; 333 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 334 return -1; 335 return 0; 336 } 337 338 static int synaptics_pt_start(struct serio *serio) 339 { 340 struct psmouse *parent = serio_get_drvdata(serio->parent); 341 struct synaptics_data *priv = parent->private; 342 343 serio_pause_rx(parent->ps2dev.serio); 344 priv->pt_port = serio; 345 serio_continue_rx(parent->ps2dev.serio); 346 347 return 0; 348 } 349 350 static void synaptics_pt_stop(struct serio *serio) 351 { 352 struct psmouse *parent = serio_get_drvdata(serio->parent); 353 struct synaptics_data *priv = parent->private; 354 355 serio_pause_rx(parent->ps2dev.serio); 356 priv->pt_port = NULL; 357 serio_continue_rx(parent->ps2dev.serio); 358 } 359 360 static int synaptics_is_pt_packet(unsigned char *buf) 361 { 362 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 363 } 364 365 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 366 { 367 struct psmouse *child = serio_get_drvdata(ptport); 368 369 if (child && child->state == PSMOUSE_ACTIVATED) { 370 serio_interrupt(ptport, packet[1], 0); 371 serio_interrupt(ptport, packet[4], 0); 372 serio_interrupt(ptport, packet[5], 0); 373 if (child->pktsize == 4) 374 serio_interrupt(ptport, packet[2], 0); 375 } else 376 serio_interrupt(ptport, packet[1], 0); 377 } 378 379 static void synaptics_pt_activate(struct psmouse *psmouse) 380 { 381 struct synaptics_data *priv = psmouse->private; 382 struct psmouse *child = serio_get_drvdata(priv->pt_port); 383 384 /* adjust the touchpad to child's choice of protocol */ 385 if (child) { 386 if (child->pktsize == 4) 387 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 388 else 389 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 390 391 if (synaptics_mode_cmd(psmouse, priv->mode)) 392 psmouse_warn(psmouse, 393 "failed to switch guest protocol\n"); 394 } 395 } 396 397 static void synaptics_pt_create(struct psmouse *psmouse) 398 { 399 struct serio *serio; 400 401 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 402 if (!serio) { 403 psmouse_err(psmouse, 404 "not enough memory for pass-through port\n"); 405 return; 406 } 407 408 serio->id.type = SERIO_PS_PSTHRU; 409 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 410 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 411 serio->write = synaptics_pt_write; 412 serio->start = synaptics_pt_start; 413 serio->stop = synaptics_pt_stop; 414 serio->parent = psmouse->ps2dev.serio; 415 416 psmouse->pt_activate = synaptics_pt_activate; 417 418 psmouse_info(psmouse, "serio: %s port at %s\n", 419 serio->name, psmouse->phys); 420 serio_register_port(serio); 421 } 422 423 /***************************************************************************** 424 * Functions to interpret the absolute mode packets 425 ****************************************************************************/ 426 427 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 428 int sgm, int agm) 429 { 430 state->count = count; 431 state->sgm = sgm; 432 state->agm = agm; 433 } 434 435 static void synaptics_parse_agm(const unsigned char buf[], 436 struct synaptics_data *priv, 437 struct synaptics_hw_state *hw) 438 { 439 struct synaptics_hw_state *agm = &priv->agm; 440 int agm_packet_type; 441 442 agm_packet_type = (buf[5] & 0x30) >> 4; 443 switch (agm_packet_type) { 444 case 1: 445 /* Gesture packet: (x, y, z) half resolution */ 446 agm->w = hw->w; 447 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 448 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 449 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 450 break; 451 452 case 2: 453 /* AGM-CONTACT packet: (count, sgm, agm) */ 454 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 455 break; 456 457 default: 458 break; 459 } 460 461 /* Record that at least one AGM has been received since last SGM */ 462 priv->agm_pending = true; 463 } 464 465 static int synaptics_parse_hw_state(const unsigned char buf[], 466 struct synaptics_data *priv, 467 struct synaptics_hw_state *hw) 468 { 469 memset(hw, 0, sizeof(struct synaptics_hw_state)); 470 471 if (SYN_MODEL_NEWABS(priv->model_id)) { 472 hw->w = (((buf[0] & 0x30) >> 2) | 473 ((buf[0] & 0x04) >> 1) | 474 ((buf[3] & 0x04) >> 2)); 475 476 hw->left = (buf[0] & 0x01) ? 1 : 0; 477 hw->right = (buf[0] & 0x02) ? 1 : 0; 478 479 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 480 /* 481 * Clickpad's button is transmitted as middle button, 482 * however, since it is primary button, we will report 483 * it as BTN_LEFT. 484 */ 485 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 486 487 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 488 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 489 if (hw->w == 2) 490 hw->scroll = (signed char)(buf[1]); 491 } 492 493 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 494 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 495 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 496 } 497 498 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 499 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 500 hw->w == 2) { 501 synaptics_parse_agm(buf, priv, hw); 502 return 1; 503 } 504 505 hw->x = (((buf[3] & 0x10) << 8) | 506 ((buf[1] & 0x0f) << 8) | 507 buf[4]); 508 hw->y = (((buf[3] & 0x20) << 7) | 509 ((buf[1] & 0xf0) << 4) | 510 buf[5]); 511 hw->z = buf[2]; 512 513 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 514 ((buf[0] ^ buf[3]) & 0x02)) { 515 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 516 default: 517 /* 518 * if nExtBtn is greater than 8 it should be 519 * considered invalid and treated as 0 520 */ 521 break; 522 case 8: 523 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 524 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 525 case 6: 526 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 527 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 528 case 4: 529 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 530 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 531 case 2: 532 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 533 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 534 } 535 } 536 } else { 537 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 538 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 539 540 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 541 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 542 543 hw->left = (buf[0] & 0x01) ? 1 : 0; 544 hw->right = (buf[0] & 0x02) ? 1 : 0; 545 } 546 547 return 0; 548 } 549 550 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 551 bool active, int x, int y) 552 { 553 input_mt_slot(dev, slot); 554 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 555 if (active) { 556 input_report_abs(dev, ABS_MT_POSITION_X, x); 557 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 558 } 559 } 560 561 static void synaptics_report_semi_mt_data(struct input_dev *dev, 562 const struct synaptics_hw_state *a, 563 const struct synaptics_hw_state *b, 564 int num_fingers) 565 { 566 if (num_fingers >= 2) { 567 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 568 min(a->y, b->y)); 569 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 570 max(a->y, b->y)); 571 } else if (num_fingers == 1) { 572 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 573 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 574 } else { 575 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 576 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 577 } 578 } 579 580 static void synaptics_report_buttons(struct psmouse *psmouse, 581 const struct synaptics_hw_state *hw) 582 { 583 struct input_dev *dev = psmouse->dev; 584 struct synaptics_data *priv = psmouse->private; 585 int i; 586 587 input_report_key(dev, BTN_LEFT, hw->left); 588 input_report_key(dev, BTN_RIGHT, hw->right); 589 590 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 591 input_report_key(dev, BTN_MIDDLE, hw->middle); 592 593 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 594 input_report_key(dev, BTN_FORWARD, hw->up); 595 input_report_key(dev, BTN_BACK, hw->down); 596 } 597 598 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 599 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 600 } 601 602 static void synaptics_report_slot(struct input_dev *dev, int slot, 603 const struct synaptics_hw_state *hw) 604 { 605 input_mt_slot(dev, slot); 606 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 607 if (!hw) 608 return; 609 610 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 611 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 612 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 613 } 614 615 static void synaptics_report_mt_data(struct psmouse *psmouse, 616 struct synaptics_mt_state *mt_state, 617 const struct synaptics_hw_state *sgm) 618 { 619 struct input_dev *dev = psmouse->dev; 620 struct synaptics_data *priv = psmouse->private; 621 struct synaptics_hw_state *agm = &priv->agm; 622 struct synaptics_mt_state *old = &priv->mt_state; 623 624 switch (mt_state->count) { 625 case 0: 626 synaptics_report_slot(dev, 0, NULL); 627 synaptics_report_slot(dev, 1, NULL); 628 break; 629 case 1: 630 if (mt_state->sgm == -1) { 631 synaptics_report_slot(dev, 0, NULL); 632 synaptics_report_slot(dev, 1, NULL); 633 } else if (mt_state->sgm == 0) { 634 synaptics_report_slot(dev, 0, sgm); 635 synaptics_report_slot(dev, 1, NULL); 636 } else { 637 synaptics_report_slot(dev, 0, NULL); 638 synaptics_report_slot(dev, 1, sgm); 639 } 640 break; 641 default: 642 /* 643 * If the finger slot contained in SGM is valid, and either 644 * hasn't changed, or is new, then report SGM in MTB slot 0. 645 * Otherwise, empty MTB slot 0. 646 */ 647 if (mt_state->sgm != -1 && 648 (mt_state->sgm == old->sgm || old->sgm == -1)) 649 synaptics_report_slot(dev, 0, sgm); 650 else 651 synaptics_report_slot(dev, 0, NULL); 652 653 /* 654 * If the finger slot contained in AGM is valid, and either 655 * hasn't changed, or is new, then report AGM in MTB slot 1. 656 * Otherwise, empty MTB slot 1. 657 */ 658 if (mt_state->agm != -1 && 659 (mt_state->agm == old->agm || old->agm == -1)) 660 synaptics_report_slot(dev, 1, agm); 661 else 662 synaptics_report_slot(dev, 1, NULL); 663 break; 664 } 665 666 /* Don't use active slot count to generate BTN_TOOL events. */ 667 input_mt_report_pointer_emulation(dev, false); 668 669 /* Send the number of fingers reported by touchpad itself. */ 670 input_mt_report_finger_count(dev, mt_state->count); 671 672 synaptics_report_buttons(psmouse, sgm); 673 674 input_sync(dev); 675 } 676 677 /* Handle case where mt_state->count = 0 */ 678 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 679 struct synaptics_mt_state *mt_state) 680 { 681 synaptics_mt_state_set(mt_state, 0, -1, -1); 682 priv->mt_state_lost = false; 683 } 684 685 /* Handle case where mt_state->count = 1 */ 686 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 687 struct synaptics_mt_state *mt_state) 688 { 689 struct synaptics_hw_state *agm = &priv->agm; 690 struct synaptics_mt_state *old = &priv->mt_state; 691 692 /* 693 * If the last AGM was (0,0,0), and there is only one finger left, 694 * then we absolutely know that SGM contains slot 0, and all other 695 * fingers have been removed. 696 */ 697 if (priv->agm_pending && agm->z == 0) { 698 synaptics_mt_state_set(mt_state, 1, 0, -1); 699 priv->mt_state_lost = false; 700 return; 701 } 702 703 switch (old->count) { 704 case 0: 705 synaptics_mt_state_set(mt_state, 1, 0, -1); 706 break; 707 case 1: 708 /* 709 * If mt_state_lost, then the previous transition was 3->1, 710 * and SGM now contains either slot 0 or 1, but we don't know 711 * which. So, we just assume that the SGM now contains slot 1. 712 * 713 * If pending AGM and either: 714 * (a) the previous SGM slot contains slot 0, or 715 * (b) there was no SGM slot 716 * then, the SGM now contains slot 1 717 * 718 * Case (a) happens with very rapid "drum roll" gestures, where 719 * slot 0 finger is lifted and a new slot 1 finger touches 720 * within one reporting interval. 721 * 722 * Case (b) happens if initially two or more fingers tap 723 * briefly, and all but one lift before the end of the first 724 * reporting interval. 725 * 726 * (In both these cases, slot 0 will becomes empty, so SGM 727 * contains slot 1 with the new finger) 728 * 729 * Else, if there was no previous SGM, it now contains slot 0. 730 * 731 * Otherwise, SGM still contains the same slot. 732 */ 733 if (priv->mt_state_lost || 734 (priv->agm_pending && old->sgm <= 0)) 735 synaptics_mt_state_set(mt_state, 1, 1, -1); 736 else if (old->sgm == -1) 737 synaptics_mt_state_set(mt_state, 1, 0, -1); 738 break; 739 case 2: 740 /* 741 * If mt_state_lost, we don't know which finger SGM contains. 742 * 743 * So, report 1 finger, but with both slots empty. 744 * We will use slot 1 on subsequent 1->1 745 */ 746 if (priv->mt_state_lost) { 747 synaptics_mt_state_set(mt_state, 1, -1, -1); 748 break; 749 } 750 /* 751 * Since the last AGM was NOT (0,0,0), it was the finger in 752 * slot 0 that has been removed. 753 * So, SGM now contains previous AGM's slot, and AGM is now 754 * empty. 755 */ 756 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 757 break; 758 case 3: 759 /* 760 * Since last AGM was not (0,0,0), we don't know which finger 761 * is left. 762 * 763 * So, report 1 finger, but with both slots empty. 764 * We will use slot 1 on subsequent 1->1 765 */ 766 synaptics_mt_state_set(mt_state, 1, -1, -1); 767 priv->mt_state_lost = true; 768 break; 769 case 4: 770 case 5: 771 /* mt_state was updated by AGM-CONTACT packet */ 772 break; 773 } 774 } 775 776 /* Handle case where mt_state->count = 2 */ 777 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 778 struct synaptics_mt_state *mt_state) 779 { 780 struct synaptics_mt_state *old = &priv->mt_state; 781 782 switch (old->count) { 783 case 0: 784 synaptics_mt_state_set(mt_state, 2, 0, 1); 785 break; 786 case 1: 787 /* 788 * If previous SGM contained slot 1 or higher, SGM now contains 789 * slot 0 (the newly touching finger) and AGM contains SGM's 790 * previous slot. 791 * 792 * Otherwise, SGM still contains slot 0 and AGM now contains 793 * slot 1. 794 */ 795 if (old->sgm >= 1) 796 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 797 else 798 synaptics_mt_state_set(mt_state, 2, 0, 1); 799 break; 800 case 2: 801 /* 802 * If mt_state_lost, SGM now contains either finger 1 or 2, but 803 * we don't know which. 804 * So, we just assume that the SGM contains slot 0 and AGM 1. 805 */ 806 if (priv->mt_state_lost) 807 synaptics_mt_state_set(mt_state, 2, 0, 1); 808 /* 809 * Otherwise, use the same mt_state, since it either hasn't 810 * changed, or was updated by a recently received AGM-CONTACT 811 * packet. 812 */ 813 break; 814 case 3: 815 /* 816 * 3->2 transitions have two unsolvable problems: 817 * 1) no indication is given which finger was removed 818 * 2) no way to tell if agm packet was for finger 3 819 * before 3->2, or finger 2 after 3->2. 820 * 821 * So, report 2 fingers, but empty all slots. 822 * We will guess slots [0,1] on subsequent 2->2. 823 */ 824 synaptics_mt_state_set(mt_state, 2, -1, -1); 825 priv->mt_state_lost = true; 826 break; 827 case 4: 828 case 5: 829 /* mt_state was updated by AGM-CONTACT packet */ 830 break; 831 } 832 } 833 834 /* Handle case where mt_state->count = 3 */ 835 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 836 struct synaptics_mt_state *mt_state) 837 { 838 struct synaptics_mt_state *old = &priv->mt_state; 839 840 switch (old->count) { 841 case 0: 842 synaptics_mt_state_set(mt_state, 3, 0, 2); 843 break; 844 case 1: 845 /* 846 * If previous SGM contained slot 2 or higher, SGM now contains 847 * slot 0 (one of the newly touching fingers) and AGM contains 848 * SGM's previous slot. 849 * 850 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 851 */ 852 if (old->sgm >= 2) 853 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 854 else 855 synaptics_mt_state_set(mt_state, 3, 0, 2); 856 break; 857 case 2: 858 /* 859 * If the AGM previously contained slot 3 or higher, then the 860 * newly touching finger is in the lowest available slot. 861 * 862 * If SGM was previously 1 or higher, then the new SGM is 863 * now slot 0 (with a new finger), otherwise, the new finger 864 * is now in a hidden slot between 0 and AGM's slot. 865 * 866 * In all such cases, the SGM now contains slot 0, and the AGM 867 * continues to contain the same slot as before. 868 */ 869 if (old->agm >= 3) { 870 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 871 break; 872 } 873 874 /* 875 * After some 3->1 and all 3->2 transitions, we lose track 876 * of which slot is reported by SGM and AGM. 877 * 878 * For 2->3 in this state, report 3 fingers, but empty all 879 * slots, and we will guess (0,2) on a subsequent 0->3. 880 * 881 * To userspace, the resulting transition will look like: 882 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 883 */ 884 if (priv->mt_state_lost) { 885 synaptics_mt_state_set(mt_state, 3, -1, -1); 886 break; 887 } 888 889 /* 890 * If the (SGM,AGM) really previously contained slots (0, 1), 891 * then we cannot know what slot was just reported by the AGM, 892 * because the 2->3 transition can occur either before or after 893 * the AGM packet. Thus, this most recent AGM could contain 894 * either the same old slot 1 or the new slot 2. 895 * Subsequent AGMs will be reporting slot 2. 896 * 897 * To userspace, the resulting transition will look like: 898 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 899 */ 900 synaptics_mt_state_set(mt_state, 3, 0, -1); 901 break; 902 case 3: 903 /* 904 * If, for whatever reason, the previous agm was invalid, 905 * Assume SGM now contains slot 0, AGM now contains slot 2. 906 */ 907 if (old->agm <= 2) 908 synaptics_mt_state_set(mt_state, 3, 0, 2); 909 /* 910 * mt_state either hasn't changed, or was updated by a recently 911 * received AGM-CONTACT packet. 912 */ 913 break; 914 915 case 4: 916 case 5: 917 /* mt_state was updated by AGM-CONTACT packet */ 918 break; 919 } 920 } 921 922 /* Handle case where mt_state->count = 4, or = 5 */ 923 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 924 struct synaptics_mt_state *mt_state) 925 { 926 /* mt_state was updated correctly by AGM-CONTACT packet */ 927 priv->mt_state_lost = false; 928 } 929 930 static void synaptics_image_sensor_process(struct psmouse *psmouse, 931 struct synaptics_hw_state *sgm) 932 { 933 struct synaptics_data *priv = psmouse->private; 934 struct synaptics_hw_state *agm = &priv->agm; 935 struct synaptics_mt_state mt_state; 936 937 /* Initialize using current mt_state (as updated by last agm) */ 938 mt_state = agm->mt_state; 939 940 /* 941 * Update mt_state using the new finger count and current mt_state. 942 */ 943 if (sgm->z == 0) 944 synaptics_image_sensor_0f(priv, &mt_state); 945 else if (sgm->w >= 4) 946 synaptics_image_sensor_1f(priv, &mt_state); 947 else if (sgm->w == 0) 948 synaptics_image_sensor_2f(priv, &mt_state); 949 else if (sgm->w == 1 && mt_state.count <= 3) 950 synaptics_image_sensor_3f(priv, &mt_state); 951 else 952 synaptics_image_sensor_45f(priv, &mt_state); 953 954 /* Send resulting input events to user space */ 955 synaptics_report_mt_data(psmouse, &mt_state, sgm); 956 957 /* Store updated mt_state */ 958 priv->mt_state = agm->mt_state = mt_state; 959 priv->agm_pending = false; 960 } 961 962 /* 963 * called for each full received packet from the touchpad 964 */ 965 static void synaptics_process_packet(struct psmouse *psmouse) 966 { 967 struct input_dev *dev = psmouse->dev; 968 struct synaptics_data *priv = psmouse->private; 969 struct synaptics_hw_state hw; 970 int num_fingers; 971 int finger_width; 972 973 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 974 return; 975 976 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 977 synaptics_image_sensor_process(psmouse, &hw); 978 return; 979 } 980 981 if (hw.scroll) { 982 priv->scroll += hw.scroll; 983 984 while (priv->scroll >= 4) { 985 input_report_key(dev, BTN_BACK, !hw.down); 986 input_sync(dev); 987 input_report_key(dev, BTN_BACK, hw.down); 988 input_sync(dev); 989 priv->scroll -= 4; 990 } 991 while (priv->scroll <= -4) { 992 input_report_key(dev, BTN_FORWARD, !hw.up); 993 input_sync(dev); 994 input_report_key(dev, BTN_FORWARD, hw.up); 995 input_sync(dev); 996 priv->scroll += 4; 997 } 998 return; 999 } 1000 1001 if (hw.z > 0 && hw.x > 1) { 1002 num_fingers = 1; 1003 finger_width = 5; 1004 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1005 switch (hw.w) { 1006 case 0 ... 1: 1007 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1008 num_fingers = hw.w + 2; 1009 break; 1010 case 2: 1011 if (SYN_MODEL_PEN(priv->model_id)) 1012 ; /* Nothing, treat a pen as a single finger */ 1013 break; 1014 case 4 ... 15: 1015 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1016 finger_width = hw.w; 1017 break; 1018 } 1019 } 1020 } else { 1021 num_fingers = 0; 1022 finger_width = 0; 1023 } 1024 1025 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1026 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1027 num_fingers); 1028 1029 /* Post events 1030 * BTN_TOUCH has to be first as mousedev relies on it when doing 1031 * absolute -> relative conversion 1032 */ 1033 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1034 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1035 1036 if (num_fingers > 0) { 1037 input_report_abs(dev, ABS_X, hw.x); 1038 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1039 } 1040 input_report_abs(dev, ABS_PRESSURE, hw.z); 1041 1042 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1043 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1044 1045 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1046 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1047 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1048 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1049 } 1050 1051 synaptics_report_buttons(psmouse, &hw); 1052 1053 input_sync(dev); 1054 } 1055 1056 static int synaptics_validate_byte(struct psmouse *psmouse, 1057 int idx, unsigned char pkt_type) 1058 { 1059 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1060 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1061 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1062 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1063 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1064 const char *packet = psmouse->packet; 1065 1066 if (idx < 0 || idx > 4) 1067 return 0; 1068 1069 switch (pkt_type) { 1070 1071 case SYN_NEWABS: 1072 case SYN_NEWABS_RELAXED: 1073 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1074 1075 case SYN_NEWABS_STRICT: 1076 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1077 1078 case SYN_OLDABS: 1079 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1080 1081 default: 1082 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1083 return 0; 1084 } 1085 } 1086 1087 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1088 { 1089 int i; 1090 1091 for (i = 0; i < 5; i++) 1092 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1093 psmouse_info(psmouse, "using relaxed packet validation\n"); 1094 return SYN_NEWABS_RELAXED; 1095 } 1096 1097 return SYN_NEWABS_STRICT; 1098 } 1099 1100 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1101 { 1102 struct synaptics_data *priv = psmouse->private; 1103 1104 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1105 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1106 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1107 1108 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1109 synaptics_is_pt_packet(psmouse->packet)) { 1110 if (priv->pt_port) 1111 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1112 } else 1113 synaptics_process_packet(psmouse); 1114 1115 return PSMOUSE_FULL_PACKET; 1116 } 1117 1118 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1119 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1120 } 1121 1122 /***************************************************************************** 1123 * Driver initialization/cleanup functions 1124 ****************************************************************************/ 1125 static void set_abs_position_params(struct input_dev *dev, 1126 struct synaptics_data *priv, int x_code, 1127 int y_code) 1128 { 1129 int x_min = priv->x_min ?: XMIN_NOMINAL; 1130 int x_max = priv->x_max ?: XMAX_NOMINAL; 1131 int y_min = priv->y_min ?: YMIN_NOMINAL; 1132 int y_max = priv->y_max ?: YMAX_NOMINAL; 1133 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1134 SYN_REDUCED_FILTER_FUZZ : 0; 1135 1136 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1137 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1138 input_abs_set_res(dev, x_code, priv->x_res); 1139 input_abs_set_res(dev, y_code, priv->y_res); 1140 } 1141 1142 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 1143 { 1144 int i; 1145 1146 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1147 1148 __set_bit(EV_ABS, dev->evbit); 1149 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1150 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1151 1152 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1153 input_mt_init_slots(dev, 2); 1154 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1155 ABS_MT_POSITION_Y); 1156 /* Image sensors can report per-contact pressure */ 1157 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1158 1159 /* Image sensors can signal 4 and 5 finger clicks */ 1160 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1161 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1162 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1163 /* Non-image sensors with AGM use semi-mt */ 1164 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 1165 input_mt_init_slots(dev, 2); 1166 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1167 ABS_MT_POSITION_Y); 1168 } 1169 1170 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1171 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1172 1173 __set_bit(EV_KEY, dev->evbit); 1174 __set_bit(BTN_TOUCH, dev->keybit); 1175 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1176 __set_bit(BTN_LEFT, dev->keybit); 1177 __set_bit(BTN_RIGHT, dev->keybit); 1178 1179 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1180 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1181 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1182 } 1183 1184 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1185 __set_bit(BTN_MIDDLE, dev->keybit); 1186 1187 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1188 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1189 __set_bit(BTN_FORWARD, dev->keybit); 1190 __set_bit(BTN_BACK, dev->keybit); 1191 } 1192 1193 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1194 __set_bit(BTN_0 + i, dev->keybit); 1195 1196 __clear_bit(EV_REL, dev->evbit); 1197 __clear_bit(REL_X, dev->relbit); 1198 __clear_bit(REL_Y, dev->relbit); 1199 1200 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1201 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1202 /* Clickpads report only left button */ 1203 __clear_bit(BTN_RIGHT, dev->keybit); 1204 __clear_bit(BTN_MIDDLE, dev->keybit); 1205 } 1206 } 1207 1208 static void synaptics_disconnect(struct psmouse *psmouse) 1209 { 1210 synaptics_reset(psmouse); 1211 kfree(psmouse->private); 1212 psmouse->private = NULL; 1213 } 1214 1215 static int synaptics_reconnect(struct psmouse *psmouse) 1216 { 1217 struct synaptics_data *priv = psmouse->private; 1218 struct synaptics_data old_priv = *priv; 1219 int retry = 0; 1220 int error; 1221 1222 do { 1223 psmouse_reset(psmouse); 1224 if (retry) { 1225 /* 1226 * On some boxes, right after resuming, the touchpad 1227 * needs some time to finish initializing (I assume 1228 * it needs time to calibrate) and start responding 1229 * to Synaptics-specific queries, so let's wait a 1230 * bit. 1231 */ 1232 ssleep(1); 1233 } 1234 error = synaptics_detect(psmouse, 0); 1235 } while (error && ++retry < 3); 1236 1237 if (error) 1238 return -1; 1239 1240 if (retry > 1) 1241 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1242 1243 if (synaptics_query_hardware(psmouse)) { 1244 psmouse_err(psmouse, "Unable to query device.\n"); 1245 return -1; 1246 } 1247 1248 if (synaptics_set_absolute_mode(psmouse)) { 1249 psmouse_err(psmouse, "Unable to initialize device.\n"); 1250 return -1; 1251 } 1252 1253 if (synaptics_set_advanced_gesture_mode(psmouse)) { 1254 psmouse_err(psmouse, 1255 "Advanced gesture mode reconnect failed.\n"); 1256 return -1; 1257 } 1258 1259 if (old_priv.identity != priv->identity || 1260 old_priv.model_id != priv->model_id || 1261 old_priv.capabilities != priv->capabilities || 1262 old_priv.ext_cap != priv->ext_cap) { 1263 psmouse_err(psmouse, 1264 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1265 old_priv.identity, priv->identity, 1266 old_priv.model_id, priv->model_id, 1267 old_priv.capabilities, priv->capabilities, 1268 old_priv.ext_cap, priv->ext_cap); 1269 return -1; 1270 } 1271 1272 return 0; 1273 } 1274 1275 static bool impaired_toshiba_kbc; 1276 1277 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 1278 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1279 { 1280 /* Toshiba Satellite */ 1281 .matches = { 1282 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1283 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1284 }, 1285 }, 1286 { 1287 /* Toshiba Dynabook */ 1288 .matches = { 1289 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1290 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1291 }, 1292 }, 1293 { 1294 /* Toshiba Portege M300 */ 1295 .matches = { 1296 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1297 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1298 }, 1299 1300 }, 1301 { 1302 /* Toshiba Portege M300 */ 1303 .matches = { 1304 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1305 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1306 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1307 }, 1308 1309 }, 1310 #endif 1311 { } 1312 }; 1313 1314 static bool broken_olpc_ec; 1315 1316 static const struct dmi_system_id __initconst olpc_dmi_table[] = { 1317 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1318 { 1319 /* OLPC XO-1 or XO-1.5 */ 1320 .matches = { 1321 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1322 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1323 }, 1324 }, 1325 #endif 1326 { } 1327 }; 1328 1329 void __init synaptics_module_init(void) 1330 { 1331 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1332 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1333 } 1334 1335 int synaptics_init(struct psmouse *psmouse) 1336 { 1337 struct synaptics_data *priv; 1338 1339 /* 1340 * The OLPC XO has issues with Synaptics' absolute mode; similarly to 1341 * the HGPK, it quickly degrades and the hardware becomes jumpy and 1342 * overly sensitive. Not only that, but the constant packet spew 1343 * (even at a lowered 40pps rate) overloads the EC such that key 1344 * presses on the keyboard are missed. Given all of that, don't 1345 * even attempt to use Synaptics mode. Relative mode seems to work 1346 * just fine. 1347 */ 1348 if (broken_olpc_ec) { 1349 psmouse_info(psmouse, 1350 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1351 return -ENODEV; 1352 } 1353 1354 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1355 if (!priv) 1356 return -ENOMEM; 1357 1358 psmouse_reset(psmouse); 1359 1360 if (synaptics_query_hardware(psmouse)) { 1361 psmouse_err(psmouse, "Unable to query device.\n"); 1362 goto init_fail; 1363 } 1364 1365 if (synaptics_set_absolute_mode(psmouse)) { 1366 psmouse_err(psmouse, "Unable to initialize device.\n"); 1367 goto init_fail; 1368 } 1369 1370 if (synaptics_set_advanced_gesture_mode(psmouse)) { 1371 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 1372 goto init_fail; 1373 } 1374 1375 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1376 1377 psmouse_info(psmouse, 1378 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 1379 SYN_ID_MODEL(priv->identity), 1380 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1381 priv->model_id, 1382 priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 1383 1384 set_input_params(psmouse->dev, priv); 1385 1386 /* 1387 * Encode touchpad model so that it can be used to set 1388 * input device->id.version and be visible to userspace. 1389 * Because version is __u16 we have to drop something. 1390 * Hardware info bits seem to be good candidates as they 1391 * are documented to be for Synaptics corp. internal use. 1392 */ 1393 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1394 (priv->model_id & 0x000000ff); 1395 1396 psmouse->protocol_handler = synaptics_process_byte; 1397 psmouse->set_rate = synaptics_set_rate; 1398 psmouse->disconnect = synaptics_disconnect; 1399 psmouse->reconnect = synaptics_reconnect; 1400 psmouse->cleanup = synaptics_reset; 1401 psmouse->pktsize = 6; 1402 /* Synaptics can usually stay in sync without extra help */ 1403 psmouse->resync_time = 0; 1404 1405 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1406 synaptics_pt_create(psmouse); 1407 1408 /* 1409 * Toshiba's KBC seems to have trouble handling data from 1410 * Synaptics at full rate. Switch to a lower rate (roughly 1411 * the same rate as a standard PS/2 mouse). 1412 */ 1413 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1414 psmouse_info(psmouse, 1415 "Toshiba %s detected, limiting rate to 40pps.\n", 1416 dmi_get_system_info(DMI_PRODUCT_NAME)); 1417 psmouse->rate = 40; 1418 } 1419 1420 return 0; 1421 1422 init_fail: 1423 kfree(priv); 1424 return -1; 1425 } 1426 1427 bool synaptics_supported(void) 1428 { 1429 return true; 1430 } 1431 1432 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1433 1434 void __init synaptics_module_init(void) 1435 { 1436 } 1437 1438 int synaptics_init(struct psmouse *psmouse) 1439 { 1440 return -ENOSYS; 1441 } 1442 1443 bool synaptics_supported(void) 1444 { 1445 return false; 1446 } 1447 1448 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1449