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