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_advanced_gesture_mode(struct psmouse *psmouse) 273 { 274 static unsigned char param = 0xc8; 275 struct synaptics_data *priv = psmouse->private; 276 277 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 278 return 0; 279 280 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 281 return -1; 282 283 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 284 return -1; 285 286 /* Advanced gesture mode also sends multi finger data */ 287 priv->capabilities |= BIT(1); 288 289 return 0; 290 } 291 292 static int synaptics_set_mode(struct psmouse *psmouse) 293 { 294 struct synaptics_data *priv = psmouse->private; 295 296 priv->mode = 0; 297 if (priv->absolute_mode) 298 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 299 if (priv->disable_gesture) 300 priv->mode |= SYN_BIT_DISABLE_GESTURE; 301 if (psmouse->rate >= 80) 302 priv->mode |= SYN_BIT_HIGH_RATE; 303 if (SYN_CAP_EXTENDED(priv->capabilities)) 304 priv->mode |= SYN_BIT_W_MODE; 305 306 if (synaptics_mode_cmd(psmouse, priv->mode)) 307 return -1; 308 309 if (priv->absolute_mode && 310 synaptics_set_advanced_gesture_mode(psmouse)) { 311 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 312 return -1; 313 } 314 315 return 0; 316 } 317 318 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 319 { 320 struct synaptics_data *priv = psmouse->private; 321 322 if (rate >= 80) { 323 priv->mode |= SYN_BIT_HIGH_RATE; 324 psmouse->rate = 80; 325 } else { 326 priv->mode &= ~SYN_BIT_HIGH_RATE; 327 psmouse->rate = 40; 328 } 329 330 synaptics_mode_cmd(psmouse, priv->mode); 331 } 332 333 /***************************************************************************** 334 * Synaptics pass-through PS/2 port support 335 ****************************************************************************/ 336 static int synaptics_pt_write(struct serio *serio, unsigned char c) 337 { 338 struct psmouse *parent = serio_get_drvdata(serio->parent); 339 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 340 341 if (psmouse_sliced_command(parent, c)) 342 return -1; 343 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 344 return -1; 345 return 0; 346 } 347 348 static int synaptics_pt_start(struct serio *serio) 349 { 350 struct psmouse *parent = serio_get_drvdata(serio->parent); 351 struct synaptics_data *priv = parent->private; 352 353 serio_pause_rx(parent->ps2dev.serio); 354 priv->pt_port = serio; 355 serio_continue_rx(parent->ps2dev.serio); 356 357 return 0; 358 } 359 360 static void synaptics_pt_stop(struct serio *serio) 361 { 362 struct psmouse *parent = serio_get_drvdata(serio->parent); 363 struct synaptics_data *priv = parent->private; 364 365 serio_pause_rx(parent->ps2dev.serio); 366 priv->pt_port = NULL; 367 serio_continue_rx(parent->ps2dev.serio); 368 } 369 370 static int synaptics_is_pt_packet(unsigned char *buf) 371 { 372 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 373 } 374 375 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 376 { 377 struct psmouse *child = serio_get_drvdata(ptport); 378 379 if (child && child->state == PSMOUSE_ACTIVATED) { 380 serio_interrupt(ptport, packet[1], 0); 381 serio_interrupt(ptport, packet[4], 0); 382 serio_interrupt(ptport, packet[5], 0); 383 if (child->pktsize == 4) 384 serio_interrupt(ptport, packet[2], 0); 385 } else 386 serio_interrupt(ptport, packet[1], 0); 387 } 388 389 static void synaptics_pt_activate(struct psmouse *psmouse) 390 { 391 struct synaptics_data *priv = psmouse->private; 392 struct psmouse *child = serio_get_drvdata(priv->pt_port); 393 394 /* adjust the touchpad to child's choice of protocol */ 395 if (child) { 396 if (child->pktsize == 4) 397 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 398 else 399 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 400 401 if (synaptics_mode_cmd(psmouse, priv->mode)) 402 psmouse_warn(psmouse, 403 "failed to switch guest protocol\n"); 404 } 405 } 406 407 static void synaptics_pt_create(struct psmouse *psmouse) 408 { 409 struct serio *serio; 410 411 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 412 if (!serio) { 413 psmouse_err(psmouse, 414 "not enough memory for pass-through port\n"); 415 return; 416 } 417 418 serio->id.type = SERIO_PS_PSTHRU; 419 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 420 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 421 serio->write = synaptics_pt_write; 422 serio->start = synaptics_pt_start; 423 serio->stop = synaptics_pt_stop; 424 serio->parent = psmouse->ps2dev.serio; 425 426 psmouse->pt_activate = synaptics_pt_activate; 427 428 psmouse_info(psmouse, "serio: %s port at %s\n", 429 serio->name, psmouse->phys); 430 serio_register_port(serio); 431 } 432 433 /***************************************************************************** 434 * Functions to interpret the absolute mode packets 435 ****************************************************************************/ 436 437 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 438 int sgm, int agm) 439 { 440 state->count = count; 441 state->sgm = sgm; 442 state->agm = agm; 443 } 444 445 static void synaptics_parse_agm(const unsigned char buf[], 446 struct synaptics_data *priv, 447 struct synaptics_hw_state *hw) 448 { 449 struct synaptics_hw_state *agm = &priv->agm; 450 int agm_packet_type; 451 452 agm_packet_type = (buf[5] & 0x30) >> 4; 453 switch (agm_packet_type) { 454 case 1: 455 /* Gesture packet: (x, y, z) half resolution */ 456 agm->w = hw->w; 457 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 458 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 459 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 460 break; 461 462 case 2: 463 /* AGM-CONTACT packet: (count, sgm, agm) */ 464 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 465 break; 466 467 default: 468 break; 469 } 470 471 /* Record that at least one AGM has been received since last SGM */ 472 priv->agm_pending = true; 473 } 474 475 static int synaptics_parse_hw_state(const unsigned char buf[], 476 struct synaptics_data *priv, 477 struct synaptics_hw_state *hw) 478 { 479 memset(hw, 0, sizeof(struct synaptics_hw_state)); 480 481 if (SYN_MODEL_NEWABS(priv->model_id)) { 482 hw->w = (((buf[0] & 0x30) >> 2) | 483 ((buf[0] & 0x04) >> 1) | 484 ((buf[3] & 0x04) >> 2)); 485 486 hw->left = (buf[0] & 0x01) ? 1 : 0; 487 hw->right = (buf[0] & 0x02) ? 1 : 0; 488 489 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 490 /* 491 * Clickpad's button is transmitted as middle button, 492 * however, since it is primary button, we will report 493 * it as BTN_LEFT. 494 */ 495 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 496 497 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 498 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 499 if (hw->w == 2) 500 hw->scroll = (signed char)(buf[1]); 501 } 502 503 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 504 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 505 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 506 } 507 508 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 509 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 510 hw->w == 2) { 511 synaptics_parse_agm(buf, priv, hw); 512 return 1; 513 } 514 515 hw->x = (((buf[3] & 0x10) << 8) | 516 ((buf[1] & 0x0f) << 8) | 517 buf[4]); 518 hw->y = (((buf[3] & 0x20) << 7) | 519 ((buf[1] & 0xf0) << 4) | 520 buf[5]); 521 hw->z = buf[2]; 522 523 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 524 ((buf[0] ^ buf[3]) & 0x02)) { 525 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 526 default: 527 /* 528 * if nExtBtn is greater than 8 it should be 529 * considered invalid and treated as 0 530 */ 531 break; 532 case 8: 533 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 534 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 535 case 6: 536 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 537 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 538 case 4: 539 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 540 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 541 case 2: 542 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 543 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 544 } 545 } 546 } else { 547 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 548 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 549 550 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 551 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 552 553 hw->left = (buf[0] & 0x01) ? 1 : 0; 554 hw->right = (buf[0] & 0x02) ? 1 : 0; 555 } 556 557 return 0; 558 } 559 560 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 561 bool active, int x, int y) 562 { 563 input_mt_slot(dev, slot); 564 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 565 if (active) { 566 input_report_abs(dev, ABS_MT_POSITION_X, x); 567 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 568 } 569 } 570 571 static void synaptics_report_semi_mt_data(struct input_dev *dev, 572 const struct synaptics_hw_state *a, 573 const struct synaptics_hw_state *b, 574 int num_fingers) 575 { 576 if (num_fingers >= 2) { 577 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 578 min(a->y, b->y)); 579 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 580 max(a->y, b->y)); 581 } else if (num_fingers == 1) { 582 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 583 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 584 } else { 585 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 586 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 587 } 588 } 589 590 static void synaptics_report_buttons(struct psmouse *psmouse, 591 const struct synaptics_hw_state *hw) 592 { 593 struct input_dev *dev = psmouse->dev; 594 struct synaptics_data *priv = psmouse->private; 595 int i; 596 597 input_report_key(dev, BTN_LEFT, hw->left); 598 input_report_key(dev, BTN_RIGHT, hw->right); 599 600 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 601 input_report_key(dev, BTN_MIDDLE, hw->middle); 602 603 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 604 input_report_key(dev, BTN_FORWARD, hw->up); 605 input_report_key(dev, BTN_BACK, hw->down); 606 } 607 608 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 609 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 610 } 611 612 static void synaptics_report_slot(struct input_dev *dev, int slot, 613 const struct synaptics_hw_state *hw) 614 { 615 input_mt_slot(dev, slot); 616 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 617 if (!hw) 618 return; 619 620 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 621 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 622 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 623 } 624 625 static void synaptics_report_mt_data(struct psmouse *psmouse, 626 struct synaptics_mt_state *mt_state, 627 const struct synaptics_hw_state *sgm) 628 { 629 struct input_dev *dev = psmouse->dev; 630 struct synaptics_data *priv = psmouse->private; 631 struct synaptics_hw_state *agm = &priv->agm; 632 struct synaptics_mt_state *old = &priv->mt_state; 633 634 switch (mt_state->count) { 635 case 0: 636 synaptics_report_slot(dev, 0, NULL); 637 synaptics_report_slot(dev, 1, NULL); 638 break; 639 case 1: 640 if (mt_state->sgm == -1) { 641 synaptics_report_slot(dev, 0, NULL); 642 synaptics_report_slot(dev, 1, NULL); 643 } else if (mt_state->sgm == 0) { 644 synaptics_report_slot(dev, 0, sgm); 645 synaptics_report_slot(dev, 1, NULL); 646 } else { 647 synaptics_report_slot(dev, 0, NULL); 648 synaptics_report_slot(dev, 1, sgm); 649 } 650 break; 651 default: 652 /* 653 * If the finger slot contained in SGM is valid, and either 654 * hasn't changed, or is new, then report SGM in MTB slot 0. 655 * Otherwise, empty MTB slot 0. 656 */ 657 if (mt_state->sgm != -1 && 658 (mt_state->sgm == old->sgm || old->sgm == -1)) 659 synaptics_report_slot(dev, 0, sgm); 660 else 661 synaptics_report_slot(dev, 0, NULL); 662 663 /* 664 * If the finger slot contained in AGM is valid, and either 665 * hasn't changed, or is new, then report AGM in MTB slot 1. 666 * Otherwise, empty MTB slot 1. 667 */ 668 if (mt_state->agm != -1 && 669 (mt_state->agm == old->agm || old->agm == -1)) 670 synaptics_report_slot(dev, 1, agm); 671 else 672 synaptics_report_slot(dev, 1, NULL); 673 break; 674 } 675 676 /* Don't use active slot count to generate BTN_TOOL events. */ 677 input_mt_report_pointer_emulation(dev, false); 678 679 /* Send the number of fingers reported by touchpad itself. */ 680 input_mt_report_finger_count(dev, mt_state->count); 681 682 synaptics_report_buttons(psmouse, sgm); 683 684 input_sync(dev); 685 } 686 687 /* Handle case where mt_state->count = 0 */ 688 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 689 struct synaptics_mt_state *mt_state) 690 { 691 synaptics_mt_state_set(mt_state, 0, -1, -1); 692 priv->mt_state_lost = false; 693 } 694 695 /* Handle case where mt_state->count = 1 */ 696 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 697 struct synaptics_mt_state *mt_state) 698 { 699 struct synaptics_hw_state *agm = &priv->agm; 700 struct synaptics_mt_state *old = &priv->mt_state; 701 702 /* 703 * If the last AGM was (0,0,0), and there is only one finger left, 704 * then we absolutely know that SGM contains slot 0, and all other 705 * fingers have been removed. 706 */ 707 if (priv->agm_pending && agm->z == 0) { 708 synaptics_mt_state_set(mt_state, 1, 0, -1); 709 priv->mt_state_lost = false; 710 return; 711 } 712 713 switch (old->count) { 714 case 0: 715 synaptics_mt_state_set(mt_state, 1, 0, -1); 716 break; 717 case 1: 718 /* 719 * If mt_state_lost, then the previous transition was 3->1, 720 * and SGM now contains either slot 0 or 1, but we don't know 721 * which. So, we just assume that the SGM now contains slot 1. 722 * 723 * If pending AGM and either: 724 * (a) the previous SGM slot contains slot 0, or 725 * (b) there was no SGM slot 726 * then, the SGM now contains slot 1 727 * 728 * Case (a) happens with very rapid "drum roll" gestures, where 729 * slot 0 finger is lifted and a new slot 1 finger touches 730 * within one reporting interval. 731 * 732 * Case (b) happens if initially two or more fingers tap 733 * briefly, and all but one lift before the end of the first 734 * reporting interval. 735 * 736 * (In both these cases, slot 0 will becomes empty, so SGM 737 * contains slot 1 with the new finger) 738 * 739 * Else, if there was no previous SGM, it now contains slot 0. 740 * 741 * Otherwise, SGM still contains the same slot. 742 */ 743 if (priv->mt_state_lost || 744 (priv->agm_pending && old->sgm <= 0)) 745 synaptics_mt_state_set(mt_state, 1, 1, -1); 746 else if (old->sgm == -1) 747 synaptics_mt_state_set(mt_state, 1, 0, -1); 748 break; 749 case 2: 750 /* 751 * If mt_state_lost, we don't know which finger SGM contains. 752 * 753 * So, report 1 finger, but with both slots empty. 754 * We will use slot 1 on subsequent 1->1 755 */ 756 if (priv->mt_state_lost) { 757 synaptics_mt_state_set(mt_state, 1, -1, -1); 758 break; 759 } 760 /* 761 * Since the last AGM was NOT (0,0,0), it was the finger in 762 * slot 0 that has been removed. 763 * So, SGM now contains previous AGM's slot, and AGM is now 764 * empty. 765 */ 766 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 767 break; 768 case 3: 769 /* 770 * Since last AGM was not (0,0,0), we don't know which finger 771 * is left. 772 * 773 * So, report 1 finger, but with both slots empty. 774 * We will use slot 1 on subsequent 1->1 775 */ 776 synaptics_mt_state_set(mt_state, 1, -1, -1); 777 priv->mt_state_lost = true; 778 break; 779 case 4: 780 case 5: 781 /* mt_state was updated by AGM-CONTACT packet */ 782 break; 783 } 784 } 785 786 /* Handle case where mt_state->count = 2 */ 787 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 788 struct synaptics_mt_state *mt_state) 789 { 790 struct synaptics_mt_state *old = &priv->mt_state; 791 792 switch (old->count) { 793 case 0: 794 synaptics_mt_state_set(mt_state, 2, 0, 1); 795 break; 796 case 1: 797 /* 798 * If previous SGM contained slot 1 or higher, SGM now contains 799 * slot 0 (the newly touching finger) and AGM contains SGM's 800 * previous slot. 801 * 802 * Otherwise, SGM still contains slot 0 and AGM now contains 803 * slot 1. 804 */ 805 if (old->sgm >= 1) 806 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 807 else 808 synaptics_mt_state_set(mt_state, 2, 0, 1); 809 break; 810 case 2: 811 /* 812 * If mt_state_lost, SGM now contains either finger 1 or 2, but 813 * we don't know which. 814 * So, we just assume that the SGM contains slot 0 and AGM 1. 815 */ 816 if (priv->mt_state_lost) 817 synaptics_mt_state_set(mt_state, 2, 0, 1); 818 /* 819 * Otherwise, use the same mt_state, since it either hasn't 820 * changed, or was updated by a recently received AGM-CONTACT 821 * packet. 822 */ 823 break; 824 case 3: 825 /* 826 * 3->2 transitions have two unsolvable problems: 827 * 1) no indication is given which finger was removed 828 * 2) no way to tell if agm packet was for finger 3 829 * before 3->2, or finger 2 after 3->2. 830 * 831 * So, report 2 fingers, but empty all slots. 832 * We will guess slots [0,1] on subsequent 2->2. 833 */ 834 synaptics_mt_state_set(mt_state, 2, -1, -1); 835 priv->mt_state_lost = true; 836 break; 837 case 4: 838 case 5: 839 /* mt_state was updated by AGM-CONTACT packet */ 840 break; 841 } 842 } 843 844 /* Handle case where mt_state->count = 3 */ 845 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 846 struct synaptics_mt_state *mt_state) 847 { 848 struct synaptics_mt_state *old = &priv->mt_state; 849 850 switch (old->count) { 851 case 0: 852 synaptics_mt_state_set(mt_state, 3, 0, 2); 853 break; 854 case 1: 855 /* 856 * If previous SGM contained slot 2 or higher, SGM now contains 857 * slot 0 (one of the newly touching fingers) and AGM contains 858 * SGM's previous slot. 859 * 860 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 861 */ 862 if (old->sgm >= 2) 863 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 864 else 865 synaptics_mt_state_set(mt_state, 3, 0, 2); 866 break; 867 case 2: 868 /* 869 * If the AGM previously contained slot 3 or higher, then the 870 * newly touching finger is in the lowest available slot. 871 * 872 * If SGM was previously 1 or higher, then the new SGM is 873 * now slot 0 (with a new finger), otherwise, the new finger 874 * is now in a hidden slot between 0 and AGM's slot. 875 * 876 * In all such cases, the SGM now contains slot 0, and the AGM 877 * continues to contain the same slot as before. 878 */ 879 if (old->agm >= 3) { 880 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 881 break; 882 } 883 884 /* 885 * After some 3->1 and all 3->2 transitions, we lose track 886 * of which slot is reported by SGM and AGM. 887 * 888 * For 2->3 in this state, report 3 fingers, but empty all 889 * slots, and we will guess (0,2) on a subsequent 0->3. 890 * 891 * To userspace, the resulting transition will look like: 892 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 893 */ 894 if (priv->mt_state_lost) { 895 synaptics_mt_state_set(mt_state, 3, -1, -1); 896 break; 897 } 898 899 /* 900 * If the (SGM,AGM) really previously contained slots (0, 1), 901 * then we cannot know what slot was just reported by the AGM, 902 * because the 2->3 transition can occur either before or after 903 * the AGM packet. Thus, this most recent AGM could contain 904 * either the same old slot 1 or the new slot 2. 905 * Subsequent AGMs will be reporting slot 2. 906 * 907 * To userspace, the resulting transition will look like: 908 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 909 */ 910 synaptics_mt_state_set(mt_state, 3, 0, -1); 911 break; 912 case 3: 913 /* 914 * If, for whatever reason, the previous agm was invalid, 915 * Assume SGM now contains slot 0, AGM now contains slot 2. 916 */ 917 if (old->agm <= 2) 918 synaptics_mt_state_set(mt_state, 3, 0, 2); 919 /* 920 * mt_state either hasn't changed, or was updated by a recently 921 * received AGM-CONTACT packet. 922 */ 923 break; 924 925 case 4: 926 case 5: 927 /* mt_state was updated by AGM-CONTACT packet */ 928 break; 929 } 930 } 931 932 /* Handle case where mt_state->count = 4, or = 5 */ 933 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 934 struct synaptics_mt_state *mt_state) 935 { 936 /* mt_state was updated correctly by AGM-CONTACT packet */ 937 priv->mt_state_lost = false; 938 } 939 940 static void synaptics_image_sensor_process(struct psmouse *psmouse, 941 struct synaptics_hw_state *sgm) 942 { 943 struct synaptics_data *priv = psmouse->private; 944 struct synaptics_hw_state *agm = &priv->agm; 945 struct synaptics_mt_state mt_state; 946 947 /* Initialize using current mt_state (as updated by last agm) */ 948 mt_state = agm->mt_state; 949 950 /* 951 * Update mt_state using the new finger count and current mt_state. 952 */ 953 if (sgm->z == 0) 954 synaptics_image_sensor_0f(priv, &mt_state); 955 else if (sgm->w >= 4) 956 synaptics_image_sensor_1f(priv, &mt_state); 957 else if (sgm->w == 0) 958 synaptics_image_sensor_2f(priv, &mt_state); 959 else if (sgm->w == 1 && mt_state.count <= 3) 960 synaptics_image_sensor_3f(priv, &mt_state); 961 else 962 synaptics_image_sensor_45f(priv, &mt_state); 963 964 /* Send resulting input events to user space */ 965 synaptics_report_mt_data(psmouse, &mt_state, sgm); 966 967 /* Store updated mt_state */ 968 priv->mt_state = agm->mt_state = mt_state; 969 priv->agm_pending = false; 970 } 971 972 /* 973 * called for each full received packet from the touchpad 974 */ 975 static void synaptics_process_packet(struct psmouse *psmouse) 976 { 977 struct input_dev *dev = psmouse->dev; 978 struct synaptics_data *priv = psmouse->private; 979 struct synaptics_hw_state hw; 980 int num_fingers; 981 int finger_width; 982 983 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 984 return; 985 986 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 987 synaptics_image_sensor_process(psmouse, &hw); 988 return; 989 } 990 991 if (hw.scroll) { 992 priv->scroll += hw.scroll; 993 994 while (priv->scroll >= 4) { 995 input_report_key(dev, BTN_BACK, !hw.down); 996 input_sync(dev); 997 input_report_key(dev, BTN_BACK, hw.down); 998 input_sync(dev); 999 priv->scroll -= 4; 1000 } 1001 while (priv->scroll <= -4) { 1002 input_report_key(dev, BTN_FORWARD, !hw.up); 1003 input_sync(dev); 1004 input_report_key(dev, BTN_FORWARD, hw.up); 1005 input_sync(dev); 1006 priv->scroll += 4; 1007 } 1008 return; 1009 } 1010 1011 if (hw.z > 0 && hw.x > 1) { 1012 num_fingers = 1; 1013 finger_width = 5; 1014 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1015 switch (hw.w) { 1016 case 0 ... 1: 1017 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1018 num_fingers = hw.w + 2; 1019 break; 1020 case 2: 1021 if (SYN_MODEL_PEN(priv->model_id)) 1022 ; /* Nothing, treat a pen as a single finger */ 1023 break; 1024 case 4 ... 15: 1025 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1026 finger_width = hw.w; 1027 break; 1028 } 1029 } 1030 } else { 1031 num_fingers = 0; 1032 finger_width = 0; 1033 } 1034 1035 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1036 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1037 num_fingers); 1038 1039 /* Post events 1040 * BTN_TOUCH has to be first as mousedev relies on it when doing 1041 * absolute -> relative conversion 1042 */ 1043 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1044 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1045 1046 if (num_fingers > 0) { 1047 input_report_abs(dev, ABS_X, hw.x); 1048 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1049 } 1050 input_report_abs(dev, ABS_PRESSURE, hw.z); 1051 1052 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1053 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1054 1055 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1056 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1057 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1058 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1059 } 1060 1061 synaptics_report_buttons(psmouse, &hw); 1062 1063 input_sync(dev); 1064 } 1065 1066 static int synaptics_validate_byte(struct psmouse *psmouse, 1067 int idx, unsigned char pkt_type) 1068 { 1069 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1070 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1071 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1072 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1073 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1074 const char *packet = psmouse->packet; 1075 1076 if (idx < 0 || idx > 4) 1077 return 0; 1078 1079 switch (pkt_type) { 1080 1081 case SYN_NEWABS: 1082 case SYN_NEWABS_RELAXED: 1083 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1084 1085 case SYN_NEWABS_STRICT: 1086 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1087 1088 case SYN_OLDABS: 1089 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1090 1091 default: 1092 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1093 return 0; 1094 } 1095 } 1096 1097 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1098 { 1099 int i; 1100 1101 for (i = 0; i < 5; i++) 1102 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1103 psmouse_info(psmouse, "using relaxed packet validation\n"); 1104 return SYN_NEWABS_RELAXED; 1105 } 1106 1107 return SYN_NEWABS_STRICT; 1108 } 1109 1110 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1111 { 1112 struct synaptics_data *priv = psmouse->private; 1113 1114 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1115 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1116 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1117 1118 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1119 synaptics_is_pt_packet(psmouse->packet)) { 1120 if (priv->pt_port) 1121 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1122 } else 1123 synaptics_process_packet(psmouse); 1124 1125 return PSMOUSE_FULL_PACKET; 1126 } 1127 1128 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1129 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1130 } 1131 1132 /***************************************************************************** 1133 * Driver initialization/cleanup functions 1134 ****************************************************************************/ 1135 static void set_abs_position_params(struct input_dev *dev, 1136 struct synaptics_data *priv, int x_code, 1137 int y_code) 1138 { 1139 int x_min = priv->x_min ?: XMIN_NOMINAL; 1140 int x_max = priv->x_max ?: XMAX_NOMINAL; 1141 int y_min = priv->y_min ?: YMIN_NOMINAL; 1142 int y_max = priv->y_max ?: YMAX_NOMINAL; 1143 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1144 SYN_REDUCED_FILTER_FUZZ : 0; 1145 1146 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1147 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1148 input_abs_set_res(dev, x_code, priv->x_res); 1149 input_abs_set_res(dev, y_code, priv->y_res); 1150 } 1151 1152 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 1153 { 1154 int i; 1155 1156 /* Things that apply to both modes */ 1157 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1158 __set_bit(EV_KEY, dev->evbit); 1159 __set_bit(BTN_LEFT, dev->keybit); 1160 __set_bit(BTN_RIGHT, dev->keybit); 1161 1162 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1163 __set_bit(BTN_MIDDLE, dev->keybit); 1164 1165 if (!priv->absolute_mode) { 1166 /* Relative mode */ 1167 __set_bit(EV_REL, dev->evbit); 1168 __set_bit(REL_X, dev->relbit); 1169 __set_bit(REL_Y, dev->relbit); 1170 return; 1171 } 1172 1173 /* Absolute mode */ 1174 __set_bit(EV_ABS, dev->evbit); 1175 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1176 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1177 1178 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1179 input_mt_init_slots(dev, 2); 1180 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1181 ABS_MT_POSITION_Y); 1182 /* Image sensors can report per-contact pressure */ 1183 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1184 1185 /* Image sensors can signal 4 and 5 finger clicks */ 1186 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1187 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1188 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1189 /* Non-image sensors with AGM use semi-mt */ 1190 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 1191 input_mt_init_slots(dev, 2); 1192 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1193 ABS_MT_POSITION_Y); 1194 } 1195 1196 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1197 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1198 1199 __set_bit(BTN_TOUCH, dev->keybit); 1200 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1201 1202 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1203 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1204 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1205 } 1206 1207 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1208 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1209 __set_bit(BTN_FORWARD, dev->keybit); 1210 __set_bit(BTN_BACK, dev->keybit); 1211 } 1212 1213 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1214 __set_bit(BTN_0 + i, dev->keybit); 1215 1216 __clear_bit(EV_REL, dev->evbit); 1217 __clear_bit(REL_X, dev->relbit); 1218 __clear_bit(REL_Y, dev->relbit); 1219 1220 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1221 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1222 /* Clickpads report only left button */ 1223 __clear_bit(BTN_RIGHT, dev->keybit); 1224 __clear_bit(BTN_MIDDLE, dev->keybit); 1225 } 1226 } 1227 1228 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1229 void *data, char *buf) 1230 { 1231 struct synaptics_data *priv = psmouse->private; 1232 1233 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1234 } 1235 1236 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1237 void *data, const char *buf, 1238 size_t len) 1239 { 1240 struct synaptics_data *priv = psmouse->private; 1241 unsigned int value; 1242 int err; 1243 1244 err = kstrtouint(buf, 10, &value); 1245 if (err) 1246 return err; 1247 1248 if (value > 1) 1249 return -EINVAL; 1250 1251 if (value == priv->disable_gesture) 1252 return len; 1253 1254 priv->disable_gesture = value; 1255 if (value) 1256 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1257 else 1258 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1259 1260 if (synaptics_mode_cmd(psmouse, priv->mode)) 1261 return -EIO; 1262 1263 return len; 1264 } 1265 1266 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1267 synaptics_show_disable_gesture, 1268 synaptics_set_disable_gesture); 1269 1270 static void synaptics_disconnect(struct psmouse *psmouse) 1271 { 1272 struct synaptics_data *priv = psmouse->private; 1273 1274 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1275 device_remove_file(&psmouse->ps2dev.serio->dev, 1276 &psmouse_attr_disable_gesture.dattr); 1277 1278 synaptics_reset(psmouse); 1279 kfree(priv); 1280 psmouse->private = NULL; 1281 } 1282 1283 static int synaptics_reconnect(struct psmouse *psmouse) 1284 { 1285 struct synaptics_data *priv = psmouse->private; 1286 struct synaptics_data old_priv = *priv; 1287 int retry = 0; 1288 int error; 1289 1290 do { 1291 psmouse_reset(psmouse); 1292 if (retry) { 1293 /* 1294 * On some boxes, right after resuming, the touchpad 1295 * needs some time to finish initializing (I assume 1296 * it needs time to calibrate) and start responding 1297 * to Synaptics-specific queries, so let's wait a 1298 * bit. 1299 */ 1300 ssleep(1); 1301 } 1302 error = synaptics_detect(psmouse, 0); 1303 } while (error && ++retry < 3); 1304 1305 if (error) 1306 return -1; 1307 1308 if (retry > 1) 1309 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1310 1311 if (synaptics_query_hardware(psmouse)) { 1312 psmouse_err(psmouse, "Unable to query device.\n"); 1313 return -1; 1314 } 1315 1316 if (synaptics_set_mode(psmouse)) { 1317 psmouse_err(psmouse, "Unable to initialize device.\n"); 1318 return -1; 1319 } 1320 1321 if (old_priv.identity != priv->identity || 1322 old_priv.model_id != priv->model_id || 1323 old_priv.capabilities != priv->capabilities || 1324 old_priv.ext_cap != priv->ext_cap) { 1325 psmouse_err(psmouse, 1326 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1327 old_priv.identity, priv->identity, 1328 old_priv.model_id, priv->model_id, 1329 old_priv.capabilities, priv->capabilities, 1330 old_priv.ext_cap, priv->ext_cap); 1331 return -1; 1332 } 1333 1334 return 0; 1335 } 1336 1337 static bool impaired_toshiba_kbc; 1338 1339 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 1340 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1341 { 1342 /* Toshiba Satellite */ 1343 .matches = { 1344 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1345 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1346 }, 1347 }, 1348 { 1349 /* Toshiba Dynabook */ 1350 .matches = { 1351 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1352 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1353 }, 1354 }, 1355 { 1356 /* Toshiba Portege M300 */ 1357 .matches = { 1358 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1359 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1360 }, 1361 1362 }, 1363 { 1364 /* Toshiba Portege M300 */ 1365 .matches = { 1366 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1367 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1368 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1369 }, 1370 1371 }, 1372 #endif 1373 { } 1374 }; 1375 1376 static bool broken_olpc_ec; 1377 1378 static const struct dmi_system_id __initconst olpc_dmi_table[] = { 1379 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1380 { 1381 /* OLPC XO-1 or XO-1.5 */ 1382 .matches = { 1383 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1384 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1385 }, 1386 }, 1387 #endif 1388 { } 1389 }; 1390 1391 void __init synaptics_module_init(void) 1392 { 1393 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1394 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1395 } 1396 1397 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1398 { 1399 struct synaptics_data *priv; 1400 int err = -1; 1401 1402 /* 1403 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1404 * packet spew overloads the EC such that key presses on the keyboard 1405 * are missed. Given that, don't even attempt to use Absolute mode. 1406 * Relative mode seems to work just fine. 1407 */ 1408 if (absolute_mode && broken_olpc_ec) { 1409 psmouse_info(psmouse, 1410 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1411 return -ENODEV; 1412 } 1413 1414 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1415 if (!priv) 1416 return -ENOMEM; 1417 1418 psmouse_reset(psmouse); 1419 1420 if (synaptics_query_hardware(psmouse)) { 1421 psmouse_err(psmouse, "Unable to query device.\n"); 1422 goto init_fail; 1423 } 1424 1425 priv->absolute_mode = absolute_mode; 1426 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1427 priv->disable_gesture = true; 1428 1429 if (synaptics_set_mode(psmouse)) { 1430 psmouse_err(psmouse, "Unable to initialize device.\n"); 1431 goto init_fail; 1432 } 1433 1434 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1435 1436 psmouse_info(psmouse, 1437 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 1438 SYN_ID_MODEL(priv->identity), 1439 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1440 priv->model_id, 1441 priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 1442 1443 set_input_params(psmouse->dev, priv); 1444 1445 /* 1446 * Encode touchpad model so that it can be used to set 1447 * input device->id.version and be visible to userspace. 1448 * Because version is __u16 we have to drop something. 1449 * Hardware info bits seem to be good candidates as they 1450 * are documented to be for Synaptics corp. internal use. 1451 */ 1452 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1453 (priv->model_id & 0x000000ff); 1454 1455 if (absolute_mode) { 1456 psmouse->protocol_handler = synaptics_process_byte; 1457 psmouse->pktsize = 6; 1458 } else { 1459 /* Relative mode follows standard PS/2 mouse protocol */ 1460 psmouse->protocol_handler = psmouse_process_byte; 1461 psmouse->pktsize = 3; 1462 } 1463 1464 psmouse->set_rate = synaptics_set_rate; 1465 psmouse->disconnect = synaptics_disconnect; 1466 psmouse->reconnect = synaptics_reconnect; 1467 psmouse->cleanup = synaptics_reset; 1468 /* Synaptics can usually stay in sync without extra help */ 1469 psmouse->resync_time = 0; 1470 1471 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1472 synaptics_pt_create(psmouse); 1473 1474 /* 1475 * Toshiba's KBC seems to have trouble handling data from 1476 * Synaptics at full rate. Switch to a lower rate (roughly 1477 * the same rate as a standard PS/2 mouse). 1478 */ 1479 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1480 psmouse_info(psmouse, 1481 "Toshiba %s detected, limiting rate to 40pps.\n", 1482 dmi_get_system_info(DMI_PRODUCT_NAME)); 1483 psmouse->rate = 40; 1484 } 1485 1486 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1487 err = device_create_file(&psmouse->ps2dev.serio->dev, 1488 &psmouse_attr_disable_gesture.dattr); 1489 if (err) { 1490 psmouse_err(psmouse, 1491 "Failed to create disable_gesture attribute (%d)", 1492 err); 1493 goto init_fail; 1494 } 1495 } 1496 1497 return 0; 1498 1499 init_fail: 1500 kfree(priv); 1501 return err; 1502 } 1503 1504 int synaptics_init(struct psmouse *psmouse) 1505 { 1506 return __synaptics_init(psmouse, true); 1507 } 1508 1509 int synaptics_init_relative(struct psmouse *psmouse) 1510 { 1511 return __synaptics_init(psmouse, false); 1512 } 1513 1514 bool synaptics_supported(void) 1515 { 1516 return true; 1517 } 1518 1519 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1520 1521 void __init synaptics_module_init(void) 1522 { 1523 } 1524 1525 int synaptics_init(struct psmouse *psmouse) 1526 { 1527 return -ENOSYS; 1528 } 1529 1530 bool synaptics_supported(void) 1531 { 1532 return false; 1533 } 1534 1535 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1536