1 /* 2 * Synaptics TouchPad PS/2 mouse driver 3 * 4 * 2003 Dmitry Torokhov <dtor@mail.ru> 5 * Added support for pass-through port. Special thanks to Peter Berg Larsen 6 * for explaining various Synaptics quirks. 7 * 8 * 2003 Peter Osterlund <petero2@telia.com> 9 * Ported to 2.5 input device infrastructure. 10 * 11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 12 * start merging tpconfig and gpm code to a xfree-input module 13 * adding some changes and extensions (ex. 3rd and 4th button) 14 * 15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 17 * code for the special synaptics commands (from the tpconfig-source) 18 * 19 * This program is free software; you can redistribute it and/or modify it 20 * under the terms of the GNU General Public License version 2 as published by 21 * the Free Software Foundation. 22 * 23 * Trademarks are the property of their respective owners. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/delay.h> 28 #include <linux/dmi.h> 29 #include <linux/input/mt.h> 30 #include <linux/serio.h> 31 #include <linux/libps2.h> 32 #include <linux/slab.h> 33 #include "psmouse.h" 34 #include "synaptics.h" 35 36 /* 37 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 38 * section 2.3.2, which says that they should be valid regardless of the 39 * actual size of the sensor. 40 * Note that newer firmware allows querying device for maximum useable 41 * coordinates. 42 */ 43 #define XMIN 0 44 #define XMAX 6143 45 #define YMIN 0 46 #define YMAX 6143 47 #define XMIN_NOMINAL 1472 48 #define XMAX_NOMINAL 5472 49 #define YMIN_NOMINAL 1408 50 #define YMAX_NOMINAL 4448 51 52 /* Size in bits of absolute position values reported by the hardware */ 53 #define ABS_POS_BITS 13 54 55 /* 56 * These values should represent the absolute maximum value that will 57 * be reported for a positive position value. Some Synaptics firmware 58 * uses this value to indicate a finger near the edge of the touchpad 59 * whose precise position cannot be determined. 60 * 61 * At least one touchpad is known to report positions in excess of this 62 * value which are actually negative values truncated to the 13-bit 63 * reporting range. These values have never been observed to be lower 64 * than 8184 (i.e. -8), so we treat all values greater than 8176 as 65 * negative and any other value as positive. 66 */ 67 #define X_MAX_POSITIVE 8176 68 #define Y_MAX_POSITIVE 8176 69 70 /***************************************************************************** 71 * Stuff we need even when we do not want native Synaptics support 72 ****************************************************************************/ 73 74 /* 75 * Set the synaptics touchpad mode byte by special commands 76 */ 77 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 78 { 79 unsigned char param[1]; 80 81 if (psmouse_sliced_command(psmouse, mode)) 82 return -1; 83 param[0] = SYN_PS_SET_MODE2; 84 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 85 return -1; 86 return 0; 87 } 88 89 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 90 { 91 struct ps2dev *ps2dev = &psmouse->ps2dev; 92 unsigned char param[4]; 93 94 param[0] = 0; 95 96 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 97 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 98 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 99 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 100 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 101 102 if (param[1] != 0x47) 103 return -ENODEV; 104 105 if (set_properties) { 106 psmouse->vendor = "Synaptics"; 107 psmouse->name = "TouchPad"; 108 } 109 110 return 0; 111 } 112 113 void synaptics_reset(struct psmouse *psmouse) 114 { 115 /* reset touchpad back to relative mode, gestures enabled */ 116 synaptics_mode_cmd(psmouse, 0); 117 } 118 119 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 120 121 /***************************************************************************** 122 * Synaptics communications functions 123 ****************************************************************************/ 124 125 /* 126 * Synaptics touchpads report the y coordinate from bottom to top, which is 127 * opposite from what userspace expects. 128 * This function is used to invert y before reporting. 129 */ 130 static int synaptics_invert_y(int y) 131 { 132 return YMAX_NOMINAL + YMIN_NOMINAL - y; 133 } 134 135 /* 136 * Send a command to the synpatics touchpad by special commands 137 */ 138 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 139 { 140 if (psmouse_sliced_command(psmouse, c)) 141 return -1; 142 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 143 return -1; 144 return 0; 145 } 146 147 /* 148 * Read the model-id bytes from the touchpad 149 * see also SYN_MODEL_* macros 150 */ 151 static int synaptics_model_id(struct psmouse *psmouse) 152 { 153 struct synaptics_data *priv = psmouse->private; 154 unsigned char mi[3]; 155 156 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 157 return -1; 158 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 159 return 0; 160 } 161 162 /* 163 * Read the board id from the touchpad 164 * The board id is encoded in the "QUERY MODES" response 165 */ 166 static int synaptics_board_id(struct psmouse *psmouse) 167 { 168 struct synaptics_data *priv = psmouse->private; 169 unsigned char bid[3]; 170 171 if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) 172 return -1; 173 priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; 174 return 0; 175 } 176 177 /* 178 * Read the firmware id from the touchpad 179 */ 180 static int synaptics_firmware_id(struct psmouse *psmouse) 181 { 182 struct synaptics_data *priv = psmouse->private; 183 unsigned char fwid[3]; 184 185 if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) 186 return -1; 187 priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2]; 188 return 0; 189 } 190 191 /* 192 * Read the capability-bits from the touchpad 193 * see also the SYN_CAP_* macros 194 */ 195 static int synaptics_capability(struct psmouse *psmouse) 196 { 197 struct synaptics_data *priv = psmouse->private; 198 unsigned char cap[3]; 199 200 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 201 return -1; 202 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 203 priv->ext_cap = priv->ext_cap_0c = 0; 204 205 /* 206 * Older firmwares had submodel ID fixed to 0x47 207 */ 208 if (SYN_ID_FULL(priv->identity) < 0x705 && 209 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 210 return -1; 211 } 212 213 /* 214 * Unless capExtended is set the rest of the flags should be ignored 215 */ 216 if (!SYN_CAP_EXTENDED(priv->capabilities)) 217 priv->capabilities = 0; 218 219 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 220 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 221 psmouse_warn(psmouse, 222 "device claims to have extended capabilities, but I'm not able to read them.\n"); 223 } else { 224 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 225 226 /* 227 * if nExtBtn is greater than 8 it should be considered 228 * invalid and treated as 0 229 */ 230 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 231 priv->ext_cap &= 0xff0fff; 232 } 233 } 234 235 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 236 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 237 psmouse_warn(psmouse, 238 "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); 239 } else { 240 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 241 } 242 } 243 244 return 0; 245 } 246 247 /* 248 * Identify Touchpad 249 * See also the SYN_ID_* macros 250 */ 251 static int synaptics_identify(struct psmouse *psmouse) 252 { 253 struct synaptics_data *priv = psmouse->private; 254 unsigned char id[3]; 255 256 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 257 return -1; 258 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 259 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 260 return 0; 261 return -1; 262 } 263 264 /* 265 * Read touchpad resolution and maximum reported coordinates 266 * Resolution is left zero if touchpad does not support the query 267 */ 268 static int synaptics_resolution(struct psmouse *psmouse) 269 { 270 struct synaptics_data *priv = psmouse->private; 271 unsigned char resp[3]; 272 273 if (SYN_ID_MAJOR(priv->identity) < 4) 274 return 0; 275 276 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 277 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 278 priv->x_res = resp[0]; /* x resolution in units/mm */ 279 priv->y_res = resp[2]; /* y resolution in units/mm */ 280 } 281 } 282 283 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 284 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 285 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 286 psmouse_warn(psmouse, 287 "device claims to have max coordinates query, but I'm not able to read it.\n"); 288 } else { 289 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 290 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 291 } 292 } 293 294 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 295 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 296 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 297 psmouse_warn(psmouse, 298 "device claims to have min coordinates query, but I'm not able to read it.\n"); 299 } else { 300 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 301 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 302 } 303 } 304 305 return 0; 306 } 307 308 static int synaptics_query_hardware(struct psmouse *psmouse) 309 { 310 if (synaptics_identify(psmouse)) 311 return -1; 312 if (synaptics_model_id(psmouse)) 313 return -1; 314 if (synaptics_firmware_id(psmouse)) 315 return -1; 316 if (synaptics_board_id(psmouse)) 317 return -1; 318 if (synaptics_capability(psmouse)) 319 return -1; 320 if (synaptics_resolution(psmouse)) 321 return -1; 322 323 return 0; 324 } 325 326 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 327 { 328 static unsigned char param = 0xc8; 329 struct synaptics_data *priv = psmouse->private; 330 331 if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 332 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) 333 return 0; 334 335 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 336 return -1; 337 338 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 339 return -1; 340 341 /* Advanced gesture mode also sends multi finger data */ 342 priv->capabilities |= BIT(1); 343 344 return 0; 345 } 346 347 static int synaptics_set_mode(struct psmouse *psmouse) 348 { 349 struct synaptics_data *priv = psmouse->private; 350 351 priv->mode = 0; 352 if (priv->absolute_mode) 353 priv->mode |= SYN_BIT_ABSOLUTE_MODE; 354 if (priv->disable_gesture) 355 priv->mode |= SYN_BIT_DISABLE_GESTURE; 356 if (psmouse->rate >= 80) 357 priv->mode |= SYN_BIT_HIGH_RATE; 358 if (SYN_CAP_EXTENDED(priv->capabilities)) 359 priv->mode |= SYN_BIT_W_MODE; 360 361 if (synaptics_mode_cmd(psmouse, priv->mode)) 362 return -1; 363 364 if (priv->absolute_mode && 365 synaptics_set_advanced_gesture_mode(psmouse)) { 366 psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 367 return -1; 368 } 369 370 return 0; 371 } 372 373 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 374 { 375 struct synaptics_data *priv = psmouse->private; 376 377 if (rate >= 80) { 378 priv->mode |= SYN_BIT_HIGH_RATE; 379 psmouse->rate = 80; 380 } else { 381 priv->mode &= ~SYN_BIT_HIGH_RATE; 382 psmouse->rate = 40; 383 } 384 385 synaptics_mode_cmd(psmouse, priv->mode); 386 } 387 388 /***************************************************************************** 389 * Synaptics pass-through PS/2 port support 390 ****************************************************************************/ 391 static int synaptics_pt_write(struct serio *serio, unsigned char c) 392 { 393 struct psmouse *parent = serio_get_drvdata(serio->parent); 394 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 395 396 if (psmouse_sliced_command(parent, c)) 397 return -1; 398 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 399 return -1; 400 return 0; 401 } 402 403 static int synaptics_pt_start(struct serio *serio) 404 { 405 struct psmouse *parent = serio_get_drvdata(serio->parent); 406 struct synaptics_data *priv = parent->private; 407 408 serio_pause_rx(parent->ps2dev.serio); 409 priv->pt_port = serio; 410 serio_continue_rx(parent->ps2dev.serio); 411 412 return 0; 413 } 414 415 static void synaptics_pt_stop(struct serio *serio) 416 { 417 struct psmouse *parent = serio_get_drvdata(serio->parent); 418 struct synaptics_data *priv = parent->private; 419 420 serio_pause_rx(parent->ps2dev.serio); 421 priv->pt_port = NULL; 422 serio_continue_rx(parent->ps2dev.serio); 423 } 424 425 static int synaptics_is_pt_packet(unsigned char *buf) 426 { 427 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 428 } 429 430 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 431 { 432 struct psmouse *child = serio_get_drvdata(ptport); 433 434 if (child && child->state == PSMOUSE_ACTIVATED) { 435 serio_interrupt(ptport, packet[1], 0); 436 serio_interrupt(ptport, packet[4], 0); 437 serio_interrupt(ptport, packet[5], 0); 438 if (child->pktsize == 4) 439 serio_interrupt(ptport, packet[2], 0); 440 } else 441 serio_interrupt(ptport, packet[1], 0); 442 } 443 444 static void synaptics_pt_activate(struct psmouse *psmouse) 445 { 446 struct synaptics_data *priv = psmouse->private; 447 struct psmouse *child = serio_get_drvdata(priv->pt_port); 448 449 /* adjust the touchpad to child's choice of protocol */ 450 if (child) { 451 if (child->pktsize == 4) 452 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 453 else 454 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 455 456 if (synaptics_mode_cmd(psmouse, priv->mode)) 457 psmouse_warn(psmouse, 458 "failed to switch guest protocol\n"); 459 } 460 } 461 462 static void synaptics_pt_create(struct psmouse *psmouse) 463 { 464 struct serio *serio; 465 466 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 467 if (!serio) { 468 psmouse_err(psmouse, 469 "not enough memory for pass-through port\n"); 470 return; 471 } 472 473 serio->id.type = SERIO_PS_PSTHRU; 474 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 475 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 476 serio->write = synaptics_pt_write; 477 serio->start = synaptics_pt_start; 478 serio->stop = synaptics_pt_stop; 479 serio->parent = psmouse->ps2dev.serio; 480 481 psmouse->pt_activate = synaptics_pt_activate; 482 483 psmouse_info(psmouse, "serio: %s port at %s\n", 484 serio->name, psmouse->phys); 485 serio_register_port(serio); 486 } 487 488 /***************************************************************************** 489 * Functions to interpret the absolute mode packets 490 ****************************************************************************/ 491 492 static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, 493 int sgm, int agm) 494 { 495 state->count = count; 496 state->sgm = sgm; 497 state->agm = agm; 498 } 499 500 static void synaptics_parse_agm(const unsigned char buf[], 501 struct synaptics_data *priv, 502 struct synaptics_hw_state *hw) 503 { 504 struct synaptics_hw_state *agm = &priv->agm; 505 int agm_packet_type; 506 507 agm_packet_type = (buf[5] & 0x30) >> 4; 508 switch (agm_packet_type) { 509 case 1: 510 /* Gesture packet: (x, y, z) half resolution */ 511 agm->w = hw->w; 512 agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 513 agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 514 agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 515 break; 516 517 case 2: 518 /* AGM-CONTACT packet: (count, sgm, agm) */ 519 synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); 520 break; 521 522 default: 523 break; 524 } 525 526 /* Record that at least one AGM has been received since last SGM */ 527 priv->agm_pending = true; 528 } 529 530 static int synaptics_parse_hw_state(const unsigned char buf[], 531 struct synaptics_data *priv, 532 struct synaptics_hw_state *hw) 533 { 534 memset(hw, 0, sizeof(struct synaptics_hw_state)); 535 536 if (SYN_MODEL_NEWABS(priv->model_id)) { 537 hw->w = (((buf[0] & 0x30) >> 2) | 538 ((buf[0] & 0x04) >> 1) | 539 ((buf[3] & 0x04) >> 2)); 540 541 hw->left = (buf[0] & 0x01) ? 1 : 0; 542 hw->right = (buf[0] & 0x02) ? 1 : 0; 543 544 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 545 /* 546 * Clickpad's button is transmitted as middle button, 547 * however, since it is primary button, we will report 548 * it as BTN_LEFT. 549 */ 550 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 551 552 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 553 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 554 if (hw->w == 2) 555 hw->scroll = (signed char)(buf[1]); 556 } 557 558 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 559 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 560 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 561 } 562 563 if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || 564 SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && 565 hw->w == 2) { 566 synaptics_parse_agm(buf, priv, hw); 567 return 1; 568 } 569 570 hw->x = (((buf[3] & 0x10) << 8) | 571 ((buf[1] & 0x0f) << 8) | 572 buf[4]); 573 hw->y = (((buf[3] & 0x20) << 7) | 574 ((buf[1] & 0xf0) << 4) | 575 buf[5]); 576 hw->z = buf[2]; 577 578 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 579 ((buf[0] ^ buf[3]) & 0x02)) { 580 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 581 default: 582 /* 583 * if nExtBtn is greater than 8 it should be 584 * considered invalid and treated as 0 585 */ 586 break; 587 case 8: 588 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 589 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 590 case 6: 591 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 592 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 593 case 4: 594 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 595 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 596 case 2: 597 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 598 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 599 } 600 } 601 } else { 602 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 603 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 604 605 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 606 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 607 608 hw->left = (buf[0] & 0x01) ? 1 : 0; 609 hw->right = (buf[0] & 0x02) ? 1 : 0; 610 } 611 612 /* 613 * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE 614 * is used by some firmware to indicate a finger at the edge of 615 * the touchpad whose precise position cannot be determined, so 616 * convert these values to the maximum axis value. 617 */ 618 if (hw->x > X_MAX_POSITIVE) 619 hw->x -= 1 << ABS_POS_BITS; 620 else if (hw->x == X_MAX_POSITIVE) 621 hw->x = XMAX; 622 623 if (hw->y > Y_MAX_POSITIVE) 624 hw->y -= 1 << ABS_POS_BITS; 625 else if (hw->y == Y_MAX_POSITIVE) 626 hw->y = YMAX; 627 628 return 0; 629 } 630 631 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 632 bool active, int x, int y) 633 { 634 input_mt_slot(dev, slot); 635 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 636 if (active) { 637 input_report_abs(dev, ABS_MT_POSITION_X, x); 638 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); 639 } 640 } 641 642 static void synaptics_report_semi_mt_data(struct input_dev *dev, 643 const struct synaptics_hw_state *a, 644 const struct synaptics_hw_state *b, 645 int num_fingers) 646 { 647 if (num_fingers >= 2) { 648 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 649 min(a->y, b->y)); 650 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 651 max(a->y, b->y)); 652 } else if (num_fingers == 1) { 653 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 654 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 655 } else { 656 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 657 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 658 } 659 } 660 661 static void synaptics_report_buttons(struct psmouse *psmouse, 662 const struct synaptics_hw_state *hw) 663 { 664 struct input_dev *dev = psmouse->dev; 665 struct synaptics_data *priv = psmouse->private; 666 int i; 667 668 input_report_key(dev, BTN_LEFT, hw->left); 669 input_report_key(dev, BTN_RIGHT, hw->right); 670 671 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 672 input_report_key(dev, BTN_MIDDLE, hw->middle); 673 674 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 675 input_report_key(dev, BTN_FORWARD, hw->up); 676 input_report_key(dev, BTN_BACK, hw->down); 677 } 678 679 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 680 input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); 681 } 682 683 static void synaptics_report_slot(struct input_dev *dev, int slot, 684 const struct synaptics_hw_state *hw) 685 { 686 input_mt_slot(dev, slot); 687 input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); 688 if (!hw) 689 return; 690 691 input_report_abs(dev, ABS_MT_POSITION_X, hw->x); 692 input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); 693 input_report_abs(dev, ABS_MT_PRESSURE, hw->z); 694 } 695 696 static void synaptics_report_mt_data(struct psmouse *psmouse, 697 struct synaptics_mt_state *mt_state, 698 const struct synaptics_hw_state *sgm) 699 { 700 struct input_dev *dev = psmouse->dev; 701 struct synaptics_data *priv = psmouse->private; 702 struct synaptics_hw_state *agm = &priv->agm; 703 struct synaptics_mt_state *old = &priv->mt_state; 704 705 switch (mt_state->count) { 706 case 0: 707 synaptics_report_slot(dev, 0, NULL); 708 synaptics_report_slot(dev, 1, NULL); 709 break; 710 case 1: 711 if (mt_state->sgm == -1) { 712 synaptics_report_slot(dev, 0, NULL); 713 synaptics_report_slot(dev, 1, NULL); 714 } else if (mt_state->sgm == 0) { 715 synaptics_report_slot(dev, 0, sgm); 716 synaptics_report_slot(dev, 1, NULL); 717 } else { 718 synaptics_report_slot(dev, 0, NULL); 719 synaptics_report_slot(dev, 1, sgm); 720 } 721 break; 722 default: 723 /* 724 * If the finger slot contained in SGM is valid, and either 725 * hasn't changed, or is new, or the old SGM has now moved to 726 * AGM, then report SGM in MTB slot 0. 727 * Otherwise, empty MTB slot 0. 728 */ 729 if (mt_state->sgm != -1 && 730 (mt_state->sgm == old->sgm || 731 old->sgm == -1 || mt_state->agm == old->sgm)) 732 synaptics_report_slot(dev, 0, sgm); 733 else 734 synaptics_report_slot(dev, 0, NULL); 735 736 /* 737 * If the finger slot contained in AGM is valid, and either 738 * hasn't changed, or is new, then report AGM in MTB slot 1. 739 * Otherwise, empty MTB slot 1. 740 * 741 * However, in the case where the AGM is new, make sure that 742 * that it is either the same as the old SGM, or there was no 743 * SGM. 744 * 745 * Otherwise, if the SGM was just 1, and the new AGM is 2, then 746 * the new AGM will keep the old SGM's tracking ID, which can 747 * cause apparent drumroll. This happens if in the following 748 * valid finger sequence: 749 * 750 * Action SGM AGM (MTB slot:Contact) 751 * 1. Touch contact 0 (0:0) 752 * 2. Touch contact 1 (0:0, 1:1) 753 * 3. Lift contact 0 (1:1) 754 * 4. Touch contacts 2,3 (0:2, 1:3) 755 * 756 * In step 4, contact 3, in AGM must not be given the same 757 * tracking ID as contact 1 had in step 3. To avoid this, 758 * the first agm with contact 3 is dropped and slot 1 is 759 * invalidated (tracking ID = -1). 760 */ 761 if (mt_state->agm != -1 && 762 (mt_state->agm == old->agm || 763 (old->agm == -1 && 764 (old->sgm == -1 || mt_state->agm == old->sgm)))) 765 synaptics_report_slot(dev, 1, agm); 766 else 767 synaptics_report_slot(dev, 1, NULL); 768 break; 769 } 770 771 /* Don't use active slot count to generate BTN_TOOL events. */ 772 input_mt_report_pointer_emulation(dev, false); 773 774 /* Send the number of fingers reported by touchpad itself. */ 775 input_mt_report_finger_count(dev, mt_state->count); 776 777 synaptics_report_buttons(psmouse, sgm); 778 779 input_sync(dev); 780 } 781 782 /* Handle case where mt_state->count = 0 */ 783 static void synaptics_image_sensor_0f(struct synaptics_data *priv, 784 struct synaptics_mt_state *mt_state) 785 { 786 synaptics_mt_state_set(mt_state, 0, -1, -1); 787 priv->mt_state_lost = false; 788 } 789 790 /* Handle case where mt_state->count = 1 */ 791 static void synaptics_image_sensor_1f(struct synaptics_data *priv, 792 struct synaptics_mt_state *mt_state) 793 { 794 struct synaptics_hw_state *agm = &priv->agm; 795 struct synaptics_mt_state *old = &priv->mt_state; 796 797 /* 798 * If the last AGM was (0,0,0), and there is only one finger left, 799 * then we absolutely know that SGM contains slot 0, and all other 800 * fingers have been removed. 801 */ 802 if (priv->agm_pending && agm->z == 0) { 803 synaptics_mt_state_set(mt_state, 1, 0, -1); 804 priv->mt_state_lost = false; 805 return; 806 } 807 808 switch (old->count) { 809 case 0: 810 synaptics_mt_state_set(mt_state, 1, 0, -1); 811 break; 812 case 1: 813 /* 814 * If mt_state_lost, then the previous transition was 3->1, 815 * and SGM now contains either slot 0 or 1, but we don't know 816 * which. So, we just assume that the SGM now contains slot 1. 817 * 818 * If pending AGM and either: 819 * (a) the previous SGM slot contains slot 0, or 820 * (b) there was no SGM slot 821 * then, the SGM now contains slot 1 822 * 823 * Case (a) happens with very rapid "drum roll" gestures, where 824 * slot 0 finger is lifted and a new slot 1 finger touches 825 * within one reporting interval. 826 * 827 * Case (b) happens if initially two or more fingers tap 828 * briefly, and all but one lift before the end of the first 829 * reporting interval. 830 * 831 * (In both these cases, slot 0 will becomes empty, so SGM 832 * contains slot 1 with the new finger) 833 * 834 * Else, if there was no previous SGM, it now contains slot 0. 835 * 836 * Otherwise, SGM still contains the same slot. 837 */ 838 if (priv->mt_state_lost || 839 (priv->agm_pending && old->sgm <= 0)) 840 synaptics_mt_state_set(mt_state, 1, 1, -1); 841 else if (old->sgm == -1) 842 synaptics_mt_state_set(mt_state, 1, 0, -1); 843 break; 844 case 2: 845 /* 846 * If mt_state_lost, we don't know which finger SGM contains. 847 * 848 * So, report 1 finger, but with both slots empty. 849 * We will use slot 1 on subsequent 1->1 850 */ 851 if (priv->mt_state_lost) { 852 synaptics_mt_state_set(mt_state, 1, -1, -1); 853 break; 854 } 855 /* 856 * Since the last AGM was NOT (0,0,0), it was the finger in 857 * slot 0 that has been removed. 858 * So, SGM now contains previous AGM's slot, and AGM is now 859 * empty. 860 */ 861 synaptics_mt_state_set(mt_state, 1, old->agm, -1); 862 break; 863 case 3: 864 /* 865 * Since last AGM was not (0,0,0), we don't know which finger 866 * is left. 867 * 868 * So, report 1 finger, but with both slots empty. 869 * We will use slot 1 on subsequent 1->1 870 */ 871 synaptics_mt_state_set(mt_state, 1, -1, -1); 872 priv->mt_state_lost = true; 873 break; 874 case 4: 875 case 5: 876 /* mt_state was updated by AGM-CONTACT packet */ 877 break; 878 } 879 } 880 881 /* Handle case where mt_state->count = 2 */ 882 static void synaptics_image_sensor_2f(struct synaptics_data *priv, 883 struct synaptics_mt_state *mt_state) 884 { 885 struct synaptics_mt_state *old = &priv->mt_state; 886 887 switch (old->count) { 888 case 0: 889 synaptics_mt_state_set(mt_state, 2, 0, 1); 890 break; 891 case 1: 892 /* 893 * If previous SGM contained slot 1 or higher, SGM now contains 894 * slot 0 (the newly touching finger) and AGM contains SGM's 895 * previous slot. 896 * 897 * Otherwise, SGM still contains slot 0 and AGM now contains 898 * slot 1. 899 */ 900 if (old->sgm >= 1) 901 synaptics_mt_state_set(mt_state, 2, 0, old->sgm); 902 else 903 synaptics_mt_state_set(mt_state, 2, 0, 1); 904 break; 905 case 2: 906 /* 907 * If mt_state_lost, SGM now contains either finger 1 or 2, but 908 * we don't know which. 909 * So, we just assume that the SGM contains slot 0 and AGM 1. 910 */ 911 if (priv->mt_state_lost) 912 synaptics_mt_state_set(mt_state, 2, 0, 1); 913 /* 914 * Otherwise, use the same mt_state, since it either hasn't 915 * changed, or was updated by a recently received AGM-CONTACT 916 * packet. 917 */ 918 break; 919 case 3: 920 /* 921 * 3->2 transitions have two unsolvable problems: 922 * 1) no indication is given which finger was removed 923 * 2) no way to tell if agm packet was for finger 3 924 * before 3->2, or finger 2 after 3->2. 925 * 926 * So, report 2 fingers, but empty all slots. 927 * We will guess slots [0,1] on subsequent 2->2. 928 */ 929 synaptics_mt_state_set(mt_state, 2, -1, -1); 930 priv->mt_state_lost = true; 931 break; 932 case 4: 933 case 5: 934 /* mt_state was updated by AGM-CONTACT packet */ 935 break; 936 } 937 } 938 939 /* Handle case where mt_state->count = 3 */ 940 static void synaptics_image_sensor_3f(struct synaptics_data *priv, 941 struct synaptics_mt_state *mt_state) 942 { 943 struct synaptics_mt_state *old = &priv->mt_state; 944 945 switch (old->count) { 946 case 0: 947 synaptics_mt_state_set(mt_state, 3, 0, 2); 948 break; 949 case 1: 950 /* 951 * If previous SGM contained slot 2 or higher, SGM now contains 952 * slot 0 (one of the newly touching fingers) and AGM contains 953 * SGM's previous slot. 954 * 955 * Otherwise, SGM now contains slot 0 and AGM contains slot 2. 956 */ 957 if (old->sgm >= 2) 958 synaptics_mt_state_set(mt_state, 3, 0, old->sgm); 959 else 960 synaptics_mt_state_set(mt_state, 3, 0, 2); 961 break; 962 case 2: 963 /* 964 * If the AGM previously contained slot 3 or higher, then the 965 * newly touching finger is in the lowest available slot. 966 * 967 * If SGM was previously 1 or higher, then the new SGM is 968 * now slot 0 (with a new finger), otherwise, the new finger 969 * is now in a hidden slot between 0 and AGM's slot. 970 * 971 * In all such cases, the SGM now contains slot 0, and the AGM 972 * continues to contain the same slot as before. 973 */ 974 if (old->agm >= 3) { 975 synaptics_mt_state_set(mt_state, 3, 0, old->agm); 976 break; 977 } 978 979 /* 980 * After some 3->1 and all 3->2 transitions, we lose track 981 * of which slot is reported by SGM and AGM. 982 * 983 * For 2->3 in this state, report 3 fingers, but empty all 984 * slots, and we will guess (0,2) on a subsequent 0->3. 985 * 986 * To userspace, the resulting transition will look like: 987 * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] 988 */ 989 if (priv->mt_state_lost) { 990 synaptics_mt_state_set(mt_state, 3, -1, -1); 991 break; 992 } 993 994 /* 995 * If the (SGM,AGM) really previously contained slots (0, 1), 996 * then we cannot know what slot was just reported by the AGM, 997 * because the 2->3 transition can occur either before or after 998 * the AGM packet. Thus, this most recent AGM could contain 999 * either the same old slot 1 or the new slot 2. 1000 * Subsequent AGMs will be reporting slot 2. 1001 * 1002 * To userspace, the resulting transition will look like: 1003 * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] 1004 */ 1005 synaptics_mt_state_set(mt_state, 3, 0, -1); 1006 break; 1007 case 3: 1008 /* 1009 * If, for whatever reason, the previous agm was invalid, 1010 * Assume SGM now contains slot 0, AGM now contains slot 2. 1011 */ 1012 if (old->agm <= 2) 1013 synaptics_mt_state_set(mt_state, 3, 0, 2); 1014 /* 1015 * mt_state either hasn't changed, or was updated by a recently 1016 * received AGM-CONTACT packet. 1017 */ 1018 break; 1019 1020 case 4: 1021 case 5: 1022 /* mt_state was updated by AGM-CONTACT packet */ 1023 break; 1024 } 1025 } 1026 1027 /* Handle case where mt_state->count = 4, or = 5 */ 1028 static void synaptics_image_sensor_45f(struct synaptics_data *priv, 1029 struct synaptics_mt_state *mt_state) 1030 { 1031 /* mt_state was updated correctly by AGM-CONTACT packet */ 1032 priv->mt_state_lost = false; 1033 } 1034 1035 static void synaptics_image_sensor_process(struct psmouse *psmouse, 1036 struct synaptics_hw_state *sgm) 1037 { 1038 struct synaptics_data *priv = psmouse->private; 1039 struct synaptics_hw_state *agm = &priv->agm; 1040 struct synaptics_mt_state mt_state; 1041 1042 /* Initialize using current mt_state (as updated by last agm) */ 1043 mt_state = agm->mt_state; 1044 1045 /* 1046 * Update mt_state using the new finger count and current mt_state. 1047 */ 1048 if (sgm->z == 0) 1049 synaptics_image_sensor_0f(priv, &mt_state); 1050 else if (sgm->w >= 4) 1051 synaptics_image_sensor_1f(priv, &mt_state); 1052 else if (sgm->w == 0) 1053 synaptics_image_sensor_2f(priv, &mt_state); 1054 else if (sgm->w == 1 && mt_state.count <= 3) 1055 synaptics_image_sensor_3f(priv, &mt_state); 1056 else 1057 synaptics_image_sensor_45f(priv, &mt_state); 1058 1059 /* Send resulting input events to user space */ 1060 synaptics_report_mt_data(psmouse, &mt_state, sgm); 1061 1062 /* Store updated mt_state */ 1063 priv->mt_state = agm->mt_state = mt_state; 1064 priv->agm_pending = false; 1065 } 1066 1067 /* 1068 * called for each full received packet from the touchpad 1069 */ 1070 static void synaptics_process_packet(struct psmouse *psmouse) 1071 { 1072 struct input_dev *dev = psmouse->dev; 1073 struct synaptics_data *priv = psmouse->private; 1074 struct synaptics_hw_state hw; 1075 int num_fingers; 1076 int finger_width; 1077 1078 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 1079 return; 1080 1081 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1082 synaptics_image_sensor_process(psmouse, &hw); 1083 return; 1084 } 1085 1086 if (hw.scroll) { 1087 priv->scroll += hw.scroll; 1088 1089 while (priv->scroll >= 4) { 1090 input_report_key(dev, BTN_BACK, !hw.down); 1091 input_sync(dev); 1092 input_report_key(dev, BTN_BACK, hw.down); 1093 input_sync(dev); 1094 priv->scroll -= 4; 1095 } 1096 while (priv->scroll <= -4) { 1097 input_report_key(dev, BTN_FORWARD, !hw.up); 1098 input_sync(dev); 1099 input_report_key(dev, BTN_FORWARD, hw.up); 1100 input_sync(dev); 1101 priv->scroll += 4; 1102 } 1103 return; 1104 } 1105 1106 if (hw.z > 0 && hw.x > 1) { 1107 num_fingers = 1; 1108 finger_width = 5; 1109 if (SYN_CAP_EXTENDED(priv->capabilities)) { 1110 switch (hw.w) { 1111 case 0 ... 1: 1112 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 1113 num_fingers = hw.w + 2; 1114 break; 1115 case 2: 1116 if (SYN_MODEL_PEN(priv->model_id)) 1117 ; /* Nothing, treat a pen as a single finger */ 1118 break; 1119 case 4 ... 15: 1120 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1121 finger_width = hw.w; 1122 break; 1123 } 1124 } 1125 } else { 1126 num_fingers = 0; 1127 finger_width = 0; 1128 } 1129 1130 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 1131 synaptics_report_semi_mt_data(dev, &hw, &priv->agm, 1132 num_fingers); 1133 1134 /* Post events 1135 * BTN_TOUCH has to be first as mousedev relies on it when doing 1136 * absolute -> relative conversion 1137 */ 1138 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 1139 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 1140 1141 if (num_fingers > 0) { 1142 input_report_abs(dev, ABS_X, hw.x); 1143 input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); 1144 } 1145 input_report_abs(dev, ABS_PRESSURE, hw.z); 1146 1147 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1148 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 1149 1150 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 1151 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1152 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 1153 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 1154 } 1155 1156 synaptics_report_buttons(psmouse, &hw); 1157 1158 input_sync(dev); 1159 } 1160 1161 static int synaptics_validate_byte(struct psmouse *psmouse, 1162 int idx, unsigned char pkt_type) 1163 { 1164 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 1165 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 1166 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 1167 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 1168 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 1169 const char *packet = psmouse->packet; 1170 1171 if (idx < 0 || idx > 4) 1172 return 0; 1173 1174 switch (pkt_type) { 1175 1176 case SYN_NEWABS: 1177 case SYN_NEWABS_RELAXED: 1178 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 1179 1180 case SYN_NEWABS_STRICT: 1181 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 1182 1183 case SYN_OLDABS: 1184 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 1185 1186 default: 1187 psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); 1188 return 0; 1189 } 1190 } 1191 1192 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 1193 { 1194 int i; 1195 1196 for (i = 0; i < 5; i++) 1197 if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { 1198 psmouse_info(psmouse, "using relaxed packet validation\n"); 1199 return SYN_NEWABS_RELAXED; 1200 } 1201 1202 return SYN_NEWABS_STRICT; 1203 } 1204 1205 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 1206 { 1207 struct synaptics_data *priv = psmouse->private; 1208 1209 if (psmouse->pktcnt >= 6) { /* Full packet received */ 1210 if (unlikely(priv->pkt_type == SYN_NEWABS)) 1211 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 1212 1213 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 1214 synaptics_is_pt_packet(psmouse->packet)) { 1215 if (priv->pt_port) 1216 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 1217 } else 1218 synaptics_process_packet(psmouse); 1219 1220 return PSMOUSE_FULL_PACKET; 1221 } 1222 1223 return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? 1224 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 1225 } 1226 1227 /***************************************************************************** 1228 * Driver initialization/cleanup functions 1229 ****************************************************************************/ 1230 static void set_abs_position_params(struct input_dev *dev, 1231 struct synaptics_data *priv, int x_code, 1232 int y_code) 1233 { 1234 int x_min = priv->x_min ?: XMIN_NOMINAL; 1235 int x_max = priv->x_max ?: XMAX_NOMINAL; 1236 int y_min = priv->y_min ?: YMIN_NOMINAL; 1237 int y_max = priv->y_max ?: YMAX_NOMINAL; 1238 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 1239 SYN_REDUCED_FILTER_FUZZ : 0; 1240 1241 input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); 1242 input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); 1243 input_abs_set_res(dev, x_code, priv->x_res); 1244 input_abs_set_res(dev, y_code, priv->y_res); 1245 } 1246 1247 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 1248 { 1249 int i; 1250 1251 /* Things that apply to both modes */ 1252 __set_bit(INPUT_PROP_POINTER, dev->propbit); 1253 __set_bit(EV_KEY, dev->evbit); 1254 __set_bit(BTN_LEFT, dev->keybit); 1255 __set_bit(BTN_RIGHT, dev->keybit); 1256 1257 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 1258 __set_bit(BTN_MIDDLE, dev->keybit); 1259 1260 if (!priv->absolute_mode) { 1261 /* Relative mode */ 1262 __set_bit(EV_REL, dev->evbit); 1263 __set_bit(REL_X, dev->relbit); 1264 __set_bit(REL_Y, dev->relbit); 1265 return; 1266 } 1267 1268 /* Absolute mode */ 1269 __set_bit(EV_ABS, dev->evbit); 1270 set_abs_position_params(dev, priv, ABS_X, ABS_Y); 1271 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 1272 1273 if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { 1274 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1275 ABS_MT_POSITION_Y); 1276 /* Image sensors can report per-contact pressure */ 1277 input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); 1278 input_mt_init_slots(dev, 2, INPUT_MT_POINTER); 1279 1280 /* Image sensors can signal 4 and 5 finger clicks */ 1281 __set_bit(BTN_TOOL_QUADTAP, dev->keybit); 1282 __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); 1283 } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 1284 /* Non-image sensors with AGM use semi-mt */ 1285 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 1286 input_mt_init_slots(dev, 2, 0); 1287 set_abs_position_params(dev, priv, ABS_MT_POSITION_X, 1288 ABS_MT_POSITION_Y); 1289 } 1290 1291 if (SYN_CAP_PALMDETECT(priv->capabilities)) 1292 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 1293 1294 __set_bit(BTN_TOUCH, dev->keybit); 1295 __set_bit(BTN_TOOL_FINGER, dev->keybit); 1296 1297 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 1298 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 1299 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 1300 } 1301 1302 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 1303 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 1304 __set_bit(BTN_FORWARD, dev->keybit); 1305 __set_bit(BTN_BACK, dev->keybit); 1306 } 1307 1308 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 1309 __set_bit(BTN_0 + i, dev->keybit); 1310 1311 __clear_bit(EV_REL, dev->evbit); 1312 __clear_bit(REL_X, dev->relbit); 1313 __clear_bit(REL_Y, dev->relbit); 1314 1315 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 1316 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 1317 /* Clickpads report only left button */ 1318 __clear_bit(BTN_RIGHT, dev->keybit); 1319 __clear_bit(BTN_MIDDLE, dev->keybit); 1320 } 1321 } 1322 1323 static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, 1324 void *data, char *buf) 1325 { 1326 struct synaptics_data *priv = psmouse->private; 1327 1328 return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); 1329 } 1330 1331 static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, 1332 void *data, const char *buf, 1333 size_t len) 1334 { 1335 struct synaptics_data *priv = psmouse->private; 1336 unsigned int value; 1337 int err; 1338 1339 err = kstrtouint(buf, 10, &value); 1340 if (err) 1341 return err; 1342 1343 if (value > 1) 1344 return -EINVAL; 1345 1346 if (value == priv->disable_gesture) 1347 return len; 1348 1349 priv->disable_gesture = value; 1350 if (value) 1351 priv->mode |= SYN_BIT_DISABLE_GESTURE; 1352 else 1353 priv->mode &= ~SYN_BIT_DISABLE_GESTURE; 1354 1355 if (synaptics_mode_cmd(psmouse, priv->mode)) 1356 return -EIO; 1357 1358 return len; 1359 } 1360 1361 PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, 1362 synaptics_show_disable_gesture, 1363 synaptics_set_disable_gesture); 1364 1365 static void synaptics_disconnect(struct psmouse *psmouse) 1366 { 1367 struct synaptics_data *priv = psmouse->private; 1368 1369 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1370 device_remove_file(&psmouse->ps2dev.serio->dev, 1371 &psmouse_attr_disable_gesture.dattr); 1372 1373 synaptics_reset(psmouse); 1374 kfree(priv); 1375 psmouse->private = NULL; 1376 } 1377 1378 static int synaptics_reconnect(struct psmouse *psmouse) 1379 { 1380 struct synaptics_data *priv = psmouse->private; 1381 struct synaptics_data old_priv = *priv; 1382 unsigned char param[2]; 1383 int retry = 0; 1384 int error; 1385 1386 do { 1387 psmouse_reset(psmouse); 1388 if (retry) { 1389 /* 1390 * On some boxes, right after resuming, the touchpad 1391 * needs some time to finish initializing (I assume 1392 * it needs time to calibrate) and start responding 1393 * to Synaptics-specific queries, so let's wait a 1394 * bit. 1395 */ 1396 ssleep(1); 1397 } 1398 ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); 1399 error = synaptics_detect(psmouse, 0); 1400 } while (error && ++retry < 3); 1401 1402 if (error) 1403 return -1; 1404 1405 if (retry > 1) 1406 psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); 1407 1408 if (synaptics_query_hardware(psmouse)) { 1409 psmouse_err(psmouse, "Unable to query device.\n"); 1410 return -1; 1411 } 1412 1413 if (synaptics_set_mode(psmouse)) { 1414 psmouse_err(psmouse, "Unable to initialize device.\n"); 1415 return -1; 1416 } 1417 1418 if (old_priv.identity != priv->identity || 1419 old_priv.model_id != priv->model_id || 1420 old_priv.capabilities != priv->capabilities || 1421 old_priv.ext_cap != priv->ext_cap) { 1422 psmouse_err(psmouse, 1423 "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 1424 old_priv.identity, priv->identity, 1425 old_priv.model_id, priv->model_id, 1426 old_priv.capabilities, priv->capabilities, 1427 old_priv.ext_cap, priv->ext_cap); 1428 return -1; 1429 } 1430 1431 return 0; 1432 } 1433 1434 static bool impaired_toshiba_kbc; 1435 1436 static const struct dmi_system_id toshiba_dmi_table[] __initconst = { 1437 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1438 { 1439 /* Toshiba Satellite */ 1440 .matches = { 1441 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1442 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 1443 }, 1444 }, 1445 { 1446 /* Toshiba Dynabook */ 1447 .matches = { 1448 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1449 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 1450 }, 1451 }, 1452 { 1453 /* Toshiba Portege M300 */ 1454 .matches = { 1455 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1456 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 1457 }, 1458 1459 }, 1460 { 1461 /* Toshiba Portege M300 */ 1462 .matches = { 1463 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1464 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 1465 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 1466 }, 1467 1468 }, 1469 #endif 1470 { } 1471 }; 1472 1473 static bool broken_olpc_ec; 1474 1475 static const struct dmi_system_id olpc_dmi_table[] __initconst = { 1476 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 1477 { 1478 /* OLPC XO-1 or XO-1.5 */ 1479 .matches = { 1480 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 1481 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 1482 }, 1483 }, 1484 #endif 1485 { } 1486 }; 1487 1488 void __init synaptics_module_init(void) 1489 { 1490 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 1491 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 1492 } 1493 1494 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) 1495 { 1496 struct synaptics_data *priv; 1497 int err = -1; 1498 1499 /* 1500 * The OLPC XO has issues with Synaptics' absolute mode; the constant 1501 * packet spew overloads the EC such that key presses on the keyboard 1502 * are missed. Given that, don't even attempt to use Absolute mode. 1503 * Relative mode seems to work just fine. 1504 */ 1505 if (absolute_mode && broken_olpc_ec) { 1506 psmouse_info(psmouse, 1507 "OLPC XO detected, not enabling Synaptics protocol.\n"); 1508 return -ENODEV; 1509 } 1510 1511 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 1512 if (!priv) 1513 return -ENOMEM; 1514 1515 psmouse_reset(psmouse); 1516 1517 if (synaptics_query_hardware(psmouse)) { 1518 psmouse_err(psmouse, "Unable to query device.\n"); 1519 goto init_fail; 1520 } 1521 1522 priv->absolute_mode = absolute_mode; 1523 if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) 1524 priv->disable_gesture = true; 1525 1526 if (synaptics_set_mode(psmouse)) { 1527 psmouse_err(psmouse, "Unable to initialize device.\n"); 1528 goto init_fail; 1529 } 1530 1531 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 1532 1533 psmouse_info(psmouse, 1534 "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", 1535 SYN_ID_MODEL(priv->identity), 1536 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 1537 priv->model_id, 1538 priv->capabilities, priv->ext_cap, priv->ext_cap_0c, 1539 priv->board_id, priv->firmware_id); 1540 1541 set_input_params(psmouse->dev, priv); 1542 1543 /* 1544 * Encode touchpad model so that it can be used to set 1545 * input device->id.version and be visible to userspace. 1546 * Because version is __u16 we have to drop something. 1547 * Hardware info bits seem to be good candidates as they 1548 * are documented to be for Synaptics corp. internal use. 1549 */ 1550 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 1551 (priv->model_id & 0x000000ff); 1552 1553 if (absolute_mode) { 1554 psmouse->protocol_handler = synaptics_process_byte; 1555 psmouse->pktsize = 6; 1556 } else { 1557 /* Relative mode follows standard PS/2 mouse protocol */ 1558 psmouse->protocol_handler = psmouse_process_byte; 1559 psmouse->pktsize = 3; 1560 } 1561 1562 psmouse->set_rate = synaptics_set_rate; 1563 psmouse->disconnect = synaptics_disconnect; 1564 psmouse->reconnect = synaptics_reconnect; 1565 psmouse->cleanup = synaptics_reset; 1566 /* Synaptics can usually stay in sync without extra help */ 1567 psmouse->resync_time = 0; 1568 1569 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 1570 synaptics_pt_create(psmouse); 1571 1572 /* 1573 * Toshiba's KBC seems to have trouble handling data from 1574 * Synaptics at full rate. Switch to a lower rate (roughly 1575 * the same rate as a standard PS/2 mouse). 1576 */ 1577 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 1578 psmouse_info(psmouse, 1579 "Toshiba %s detected, limiting rate to 40pps.\n", 1580 dmi_get_system_info(DMI_PRODUCT_NAME)); 1581 psmouse->rate = 40; 1582 } 1583 1584 if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { 1585 err = device_create_file(&psmouse->ps2dev.serio->dev, 1586 &psmouse_attr_disable_gesture.dattr); 1587 if (err) { 1588 psmouse_err(psmouse, 1589 "Failed to create disable_gesture attribute (%d)", 1590 err); 1591 goto init_fail; 1592 } 1593 } 1594 1595 return 0; 1596 1597 init_fail: 1598 kfree(priv); 1599 return err; 1600 } 1601 1602 int synaptics_init(struct psmouse *psmouse) 1603 { 1604 return __synaptics_init(psmouse, true); 1605 } 1606 1607 int synaptics_init_relative(struct psmouse *psmouse) 1608 { 1609 return __synaptics_init(psmouse, false); 1610 } 1611 1612 bool synaptics_supported(void) 1613 { 1614 return true; 1615 } 1616 1617 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1618 1619 void __init synaptics_module_init(void) 1620 { 1621 } 1622 1623 int synaptics_init(struct psmouse *psmouse) 1624 { 1625 return -ENOSYS; 1626 } 1627 1628 bool synaptics_supported(void) 1629 { 1630 return false; 1631 } 1632 1633 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1634