1 /* 2 * Synaptics TouchPad PS/2 mouse driver 3 * 4 * 2003 Dmitry Torokhov <dtor@mail.ru> 5 * Added support for pass-through port. Special thanks to Peter Berg Larsen 6 * for explaining various Synaptics quirks. 7 * 8 * 2003 Peter Osterlund <petero2@telia.com> 9 * Ported to 2.5 input device infrastructure. 10 * 11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> 12 * start merging tpconfig and gpm code to a xfree-input module 13 * adding some changes and extensions (ex. 3rd and 4th button) 14 * 15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> 16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> 17 * code for the special synaptics commands (from the tpconfig-source) 18 * 19 * This program is free software; you can redistribute it and/or modify it 20 * under the terms of the GNU General Public License version 2 as published by 21 * the Free Software Foundation. 22 * 23 * Trademarks are the property of their respective owners. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/dmi.h> 28 #include <linux/input/mt.h> 29 #include <linux/serio.h> 30 #include <linux/libps2.h> 31 #include <linux/slab.h> 32 #include "psmouse.h" 33 #include "synaptics.h" 34 35 /* 36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 37 * section 2.3.2, which says that they should be valid regardless of the 38 * actual size of the sensor. 39 * Note that newer firmware allows querying device for maximum useable 40 * coordinates. 41 */ 42 #define XMIN_NOMINAL 1472 43 #define XMAX_NOMINAL 5472 44 #define YMIN_NOMINAL 1408 45 #define YMAX_NOMINAL 4448 46 47 48 /***************************************************************************** 49 * Stuff we need even when we do not want native Synaptics support 50 ****************************************************************************/ 51 52 /* 53 * Set the synaptics touchpad mode byte by special commands 54 */ 55 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 56 { 57 unsigned char param[1]; 58 59 if (psmouse_sliced_command(psmouse, mode)) 60 return -1; 61 param[0] = SYN_PS_SET_MODE2; 62 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 63 return -1; 64 return 0; 65 } 66 67 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 68 { 69 struct ps2dev *ps2dev = &psmouse->ps2dev; 70 unsigned char param[4]; 71 72 param[0] = 0; 73 74 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 75 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 76 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 77 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 78 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 79 80 if (param[1] != 0x47) 81 return -ENODEV; 82 83 if (set_properties) { 84 psmouse->vendor = "Synaptics"; 85 psmouse->name = "TouchPad"; 86 } 87 88 return 0; 89 } 90 91 void synaptics_reset(struct psmouse *psmouse) 92 { 93 /* reset touchpad back to relative mode, gestures enabled */ 94 synaptics_mode_cmd(psmouse, 0); 95 } 96 97 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 98 99 /***************************************************************************** 100 * Synaptics communications functions 101 ****************************************************************************/ 102 103 /* 104 * Send a command to the synpatics touchpad by special commands 105 */ 106 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 107 { 108 if (psmouse_sliced_command(psmouse, c)) 109 return -1; 110 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 111 return -1; 112 return 0; 113 } 114 115 /* 116 * Read the model-id bytes from the touchpad 117 * see also SYN_MODEL_* macros 118 */ 119 static int synaptics_model_id(struct psmouse *psmouse) 120 { 121 struct synaptics_data *priv = psmouse->private; 122 unsigned char mi[3]; 123 124 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 125 return -1; 126 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 127 return 0; 128 } 129 130 /* 131 * Read the capability-bits from the touchpad 132 * see also the SYN_CAP_* macros 133 */ 134 static int synaptics_capability(struct psmouse *psmouse) 135 { 136 struct synaptics_data *priv = psmouse->private; 137 unsigned char cap[3]; 138 139 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 140 return -1; 141 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 142 priv->ext_cap = priv->ext_cap_0c = 0; 143 144 /* 145 * Older firmwares had submodel ID fixed to 0x47 146 */ 147 if (SYN_ID_FULL(priv->identity) < 0x705 && 148 SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 149 return -1; 150 } 151 152 /* 153 * Unless capExtended is set the rest of the flags should be ignored 154 */ 155 if (!SYN_CAP_EXTENDED(priv->capabilities)) 156 priv->capabilities = 0; 157 158 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 159 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 160 printk(KERN_ERR "Synaptics claims to have extended capabilities," 161 " but I'm not able to read them.\n"); 162 } else { 163 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 164 165 /* 166 * if nExtBtn is greater than 8 it should be considered 167 * invalid and treated as 0 168 */ 169 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 170 priv->ext_cap &= 0xff0fff; 171 } 172 } 173 174 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 175 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 176 printk(KERN_ERR "Synaptics claims to have extended capability 0x0c," 177 " but I'm not able to read it.\n"); 178 } else { 179 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 180 } 181 } 182 183 return 0; 184 } 185 186 /* 187 * Identify Touchpad 188 * See also the SYN_ID_* macros 189 */ 190 static int synaptics_identify(struct psmouse *psmouse) 191 { 192 struct synaptics_data *priv = psmouse->private; 193 unsigned char id[3]; 194 195 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 196 return -1; 197 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 198 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 199 return 0; 200 return -1; 201 } 202 203 /* 204 * Read touchpad resolution and maximum reported coordinates 205 * Resolution is left zero if touchpad does not support the query 206 */ 207 static int synaptics_resolution(struct psmouse *psmouse) 208 { 209 struct synaptics_data *priv = psmouse->private; 210 unsigned char resp[3]; 211 212 if (SYN_ID_MAJOR(priv->identity) < 4) 213 return 0; 214 215 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { 216 if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { 217 priv->x_res = resp[0]; /* x resolution in units/mm */ 218 priv->y_res = resp[2]; /* y resolution in units/mm */ 219 } 220 } 221 222 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 223 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 224 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { 225 printk(KERN_ERR "Synaptics claims to have max coordinates" 226 " query, but I'm not able to read it.\n"); 227 } else { 228 priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 229 priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 230 } 231 } 232 233 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && 234 SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { 235 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { 236 printk(KERN_ERR "Synaptics claims to have min coordinates" 237 " query, but I'm not able to read it.\n"); 238 } else { 239 priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); 240 priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); 241 } 242 } 243 244 return 0; 245 } 246 247 static int synaptics_query_hardware(struct psmouse *psmouse) 248 { 249 if (synaptics_identify(psmouse)) 250 return -1; 251 if (synaptics_model_id(psmouse)) 252 return -1; 253 if (synaptics_capability(psmouse)) 254 return -1; 255 if (synaptics_resolution(psmouse)) 256 return -1; 257 258 return 0; 259 } 260 261 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 262 { 263 struct synaptics_data *priv = psmouse->private; 264 265 priv->mode = SYN_BIT_ABSOLUTE_MODE; 266 if (SYN_ID_MAJOR(priv->identity) >= 4) 267 priv->mode |= SYN_BIT_DISABLE_GESTURE; 268 if (SYN_CAP_EXTENDED(priv->capabilities)) 269 priv->mode |= SYN_BIT_W_MODE; 270 271 if (synaptics_mode_cmd(psmouse, priv->mode)) 272 return -1; 273 274 return 0; 275 } 276 277 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 278 { 279 struct synaptics_data *priv = psmouse->private; 280 281 if (rate >= 80) { 282 priv->mode |= SYN_BIT_HIGH_RATE; 283 psmouse->rate = 80; 284 } else { 285 priv->mode &= ~SYN_BIT_HIGH_RATE; 286 psmouse->rate = 40; 287 } 288 289 synaptics_mode_cmd(psmouse, priv->mode); 290 } 291 292 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 293 { 294 static unsigned char param = 0xc8; 295 struct synaptics_data *priv = psmouse->private; 296 297 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 298 return 0; 299 300 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 301 return -1; 302 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 303 return -1; 304 305 /* Advanced gesture mode also sends multi finger data */ 306 priv->capabilities |= BIT(1); 307 308 return 0; 309 } 310 311 /***************************************************************************** 312 * Synaptics pass-through PS/2 port support 313 ****************************************************************************/ 314 static int synaptics_pt_write(struct serio *serio, unsigned char c) 315 { 316 struct psmouse *parent = serio_get_drvdata(serio->parent); 317 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 318 319 if (psmouse_sliced_command(parent, c)) 320 return -1; 321 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 322 return -1; 323 return 0; 324 } 325 326 static int synaptics_pt_start(struct serio *serio) 327 { 328 struct psmouse *parent = serio_get_drvdata(serio->parent); 329 struct synaptics_data *priv = parent->private; 330 331 serio_pause_rx(parent->ps2dev.serio); 332 priv->pt_port = serio; 333 serio_continue_rx(parent->ps2dev.serio); 334 335 return 0; 336 } 337 338 static void synaptics_pt_stop(struct serio *serio) 339 { 340 struct psmouse *parent = serio_get_drvdata(serio->parent); 341 struct synaptics_data *priv = parent->private; 342 343 serio_pause_rx(parent->ps2dev.serio); 344 priv->pt_port = NULL; 345 serio_continue_rx(parent->ps2dev.serio); 346 } 347 348 static int synaptics_is_pt_packet(unsigned char *buf) 349 { 350 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 351 } 352 353 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 354 { 355 struct psmouse *child = serio_get_drvdata(ptport); 356 357 if (child && child->state == PSMOUSE_ACTIVATED) { 358 serio_interrupt(ptport, packet[1], 0); 359 serio_interrupt(ptport, packet[4], 0); 360 serio_interrupt(ptport, packet[5], 0); 361 if (child->pktsize == 4) 362 serio_interrupt(ptport, packet[2], 0); 363 } else 364 serio_interrupt(ptport, packet[1], 0); 365 } 366 367 static void synaptics_pt_activate(struct psmouse *psmouse) 368 { 369 struct synaptics_data *priv = psmouse->private; 370 struct psmouse *child = serio_get_drvdata(priv->pt_port); 371 372 /* adjust the touchpad to child's choice of protocol */ 373 if (child) { 374 if (child->pktsize == 4) 375 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 376 else 377 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 378 379 if (synaptics_mode_cmd(psmouse, priv->mode)) 380 printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); 381 } 382 } 383 384 static void synaptics_pt_create(struct psmouse *psmouse) 385 { 386 struct serio *serio; 387 388 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 389 if (!serio) { 390 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); 391 return; 392 } 393 394 serio->id.type = SERIO_PS_PSTHRU; 395 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 396 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 397 serio->write = synaptics_pt_write; 398 serio->start = synaptics_pt_start; 399 serio->stop = synaptics_pt_stop; 400 serio->parent = psmouse->ps2dev.serio; 401 402 psmouse->pt_activate = synaptics_pt_activate; 403 404 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); 405 serio_register_port(serio); 406 } 407 408 /***************************************************************************** 409 * Functions to interpret the absolute mode packets 410 ****************************************************************************/ 411 412 static int synaptics_parse_hw_state(const unsigned char buf[], 413 struct synaptics_data *priv, 414 struct synaptics_hw_state *hw) 415 { 416 memset(hw, 0, sizeof(struct synaptics_hw_state)); 417 418 if (SYN_MODEL_NEWABS(priv->model_id)) { 419 hw->w = (((buf[0] & 0x30) >> 2) | 420 ((buf[0] & 0x04) >> 1) | 421 ((buf[3] & 0x04) >> 2)); 422 423 hw->left = (buf[0] & 0x01) ? 1 : 0; 424 hw->right = (buf[0] & 0x02) ? 1 : 0; 425 426 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 427 /* 428 * Clickpad's button is transmitted as middle button, 429 * however, since it is primary button, we will report 430 * it as BTN_LEFT. 431 */ 432 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 433 434 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 435 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 436 if (hw->w == 2) 437 hw->scroll = (signed char)(buf[1]); 438 } 439 440 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 441 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 442 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 443 } 444 445 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) { 446 /* Gesture packet: (x, y, z) at half resolution */ 447 priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 448 priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 449 priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 450 return 1; 451 } 452 453 hw->x = (((buf[3] & 0x10) << 8) | 454 ((buf[1] & 0x0f) << 8) | 455 buf[4]); 456 hw->y = (((buf[3] & 0x20) << 7) | 457 ((buf[1] & 0xf0) << 4) | 458 buf[5]); 459 hw->z = buf[2]; 460 461 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 462 ((buf[0] ^ buf[3]) & 0x02)) { 463 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 464 default: 465 /* 466 * if nExtBtn is greater than 8 it should be 467 * considered invalid and treated as 0 468 */ 469 break; 470 case 8: 471 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 472 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 473 case 6: 474 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 475 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 476 case 4: 477 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 478 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 479 case 2: 480 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 481 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 482 } 483 } 484 } else { 485 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 486 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 487 488 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 489 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 490 491 hw->left = (buf[0] & 0x01) ? 1 : 0; 492 hw->right = (buf[0] & 0x02) ? 1 : 0; 493 } 494 495 return 0; 496 } 497 498 static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, 499 bool active, int x, int y) 500 { 501 input_mt_slot(dev, slot); 502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 503 if (active) { 504 input_report_abs(dev, ABS_MT_POSITION_X, x); 505 input_report_abs(dev, ABS_MT_POSITION_Y, 506 YMAX_NOMINAL + YMIN_NOMINAL - y); 507 } 508 } 509 510 static void synaptics_report_semi_mt_data(struct input_dev *dev, 511 const struct synaptics_hw_state *a, 512 const struct synaptics_hw_state *b, 513 int num_fingers) 514 { 515 if (num_fingers >= 2) { 516 synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), 517 min(a->y, b->y)); 518 synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), 519 max(a->y, b->y)); 520 } else if (num_fingers == 1) { 521 synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); 522 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 523 } else { 524 synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); 525 synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); 526 } 527 } 528 529 /* 530 * called for each full received packet from the touchpad 531 */ 532 static void synaptics_process_packet(struct psmouse *psmouse) 533 { 534 struct input_dev *dev = psmouse->dev; 535 struct synaptics_data *priv = psmouse->private; 536 struct synaptics_hw_state hw; 537 int num_fingers; 538 int finger_width; 539 int i; 540 541 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 542 return; 543 544 if (hw.scroll) { 545 priv->scroll += hw.scroll; 546 547 while (priv->scroll >= 4) { 548 input_report_key(dev, BTN_BACK, !hw.down); 549 input_sync(dev); 550 input_report_key(dev, BTN_BACK, hw.down); 551 input_sync(dev); 552 priv->scroll -= 4; 553 } 554 while (priv->scroll <= -4) { 555 input_report_key(dev, BTN_FORWARD, !hw.up); 556 input_sync(dev); 557 input_report_key(dev, BTN_FORWARD, hw.up); 558 input_sync(dev); 559 priv->scroll += 4; 560 } 561 return; 562 } 563 564 if (hw.z > 0 && hw.x > 1) { 565 num_fingers = 1; 566 finger_width = 5; 567 if (SYN_CAP_EXTENDED(priv->capabilities)) { 568 switch (hw.w) { 569 case 0 ... 1: 570 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 571 num_fingers = hw.w + 2; 572 break; 573 case 2: 574 if (SYN_MODEL_PEN(priv->model_id)) 575 ; /* Nothing, treat a pen as a single finger */ 576 break; 577 case 4 ... 15: 578 if (SYN_CAP_PALMDETECT(priv->capabilities)) 579 finger_width = hw.w; 580 break; 581 } 582 } 583 } else { 584 num_fingers = 0; 585 finger_width = 0; 586 } 587 588 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 589 synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers); 590 591 /* Post events 592 * BTN_TOUCH has to be first as mousedev relies on it when doing 593 * absolute -> relative conversion 594 */ 595 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 596 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 597 598 if (num_fingers > 0) { 599 input_report_abs(dev, ABS_X, hw.x); 600 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); 601 } 602 input_report_abs(dev, ABS_PRESSURE, hw.z); 603 604 if (SYN_CAP_PALMDETECT(priv->capabilities)) 605 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 606 607 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 608 input_report_key(dev, BTN_LEFT, hw.left); 609 input_report_key(dev, BTN_RIGHT, hw.right); 610 611 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 612 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 613 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 614 } 615 616 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 617 input_report_key(dev, BTN_MIDDLE, hw.middle); 618 619 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 620 input_report_key(dev, BTN_FORWARD, hw.up); 621 input_report_key(dev, BTN_BACK, hw.down); 622 } 623 624 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 625 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); 626 627 input_sync(dev); 628 } 629 630 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) 631 { 632 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 633 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 634 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 635 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 636 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 637 638 if (idx < 0 || idx > 4) 639 return 0; 640 641 switch (pkt_type) { 642 643 case SYN_NEWABS: 644 case SYN_NEWABS_RELAXED: 645 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 646 647 case SYN_NEWABS_STRICT: 648 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 649 650 case SYN_OLDABS: 651 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 652 653 default: 654 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); 655 return 0; 656 } 657 } 658 659 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 660 { 661 int i; 662 663 for (i = 0; i < 5; i++) 664 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { 665 printk(KERN_INFO "synaptics: using relaxed packet validation\n"); 666 return SYN_NEWABS_RELAXED; 667 } 668 669 return SYN_NEWABS_STRICT; 670 } 671 672 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 673 { 674 struct synaptics_data *priv = psmouse->private; 675 676 if (psmouse->pktcnt >= 6) { /* Full packet received */ 677 if (unlikely(priv->pkt_type == SYN_NEWABS)) 678 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 679 680 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 681 synaptics_is_pt_packet(psmouse->packet)) { 682 if (priv->pt_port) 683 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 684 } else 685 synaptics_process_packet(psmouse); 686 687 return PSMOUSE_FULL_PACKET; 688 } 689 690 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? 691 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 692 } 693 694 /***************************************************************************** 695 * Driver initialization/cleanup functions 696 ****************************************************************************/ 697 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 698 { 699 int i; 700 int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? 701 SYN_REDUCED_FILTER_FUZZ : 0; 702 703 __set_bit(INPUT_PROP_POINTER, dev->propbit); 704 705 __set_bit(EV_ABS, dev->evbit); 706 input_set_abs_params(dev, ABS_X, 707 priv->x_min ?: XMIN_NOMINAL, 708 priv->x_max ?: XMAX_NOMINAL, 709 fuzz, 0); 710 input_set_abs_params(dev, ABS_Y, 711 priv->y_min ?: YMIN_NOMINAL, 712 priv->y_max ?: YMAX_NOMINAL, 713 fuzz, 0); 714 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 715 716 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 717 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 718 input_mt_init_slots(dev, 2); 719 input_set_abs_params(dev, ABS_MT_POSITION_X, 720 priv->x_min ?: XMIN_NOMINAL, 721 priv->x_max ?: XMAX_NOMINAL, 722 fuzz, 0); 723 input_set_abs_params(dev, ABS_MT_POSITION_Y, 724 priv->y_min ?: YMIN_NOMINAL, 725 priv->y_max ?: YMAX_NOMINAL, 726 fuzz, 0); 727 728 input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res); 729 input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res); 730 } 731 732 if (SYN_CAP_PALMDETECT(priv->capabilities)) 733 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 734 735 __set_bit(EV_KEY, dev->evbit); 736 __set_bit(BTN_TOUCH, dev->keybit); 737 __set_bit(BTN_TOOL_FINGER, dev->keybit); 738 __set_bit(BTN_LEFT, dev->keybit); 739 __set_bit(BTN_RIGHT, dev->keybit); 740 741 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 742 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 743 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 744 } 745 746 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 747 __set_bit(BTN_MIDDLE, dev->keybit); 748 749 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 750 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 751 __set_bit(BTN_FORWARD, dev->keybit); 752 __set_bit(BTN_BACK, dev->keybit); 753 } 754 755 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 756 __set_bit(BTN_0 + i, dev->keybit); 757 758 __clear_bit(EV_REL, dev->evbit); 759 __clear_bit(REL_X, dev->relbit); 760 __clear_bit(REL_Y, dev->relbit); 761 762 input_abs_set_res(dev, ABS_X, priv->x_res); 763 input_abs_set_res(dev, ABS_Y, priv->y_res); 764 765 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 766 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 767 /* Clickpads report only left button */ 768 __clear_bit(BTN_RIGHT, dev->keybit); 769 __clear_bit(BTN_MIDDLE, dev->keybit); 770 } 771 } 772 773 static void synaptics_disconnect(struct psmouse *psmouse) 774 { 775 synaptics_reset(psmouse); 776 kfree(psmouse->private); 777 psmouse->private = NULL; 778 } 779 780 static int synaptics_reconnect(struct psmouse *psmouse) 781 { 782 struct synaptics_data *priv = psmouse->private; 783 struct synaptics_data old_priv = *priv; 784 int retry = 0; 785 int error; 786 787 do { 788 psmouse_reset(psmouse); 789 error = synaptics_detect(psmouse, 0); 790 } while (error && ++retry < 3); 791 792 if (error) 793 return -1; 794 795 if (retry > 1) 796 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n", 797 retry); 798 799 if (synaptics_query_hardware(psmouse)) { 800 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 801 return -1; 802 } 803 804 if (synaptics_set_absolute_mode(psmouse)) { 805 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 806 return -1; 807 } 808 809 if (synaptics_set_advanced_gesture_mode(psmouse)) { 810 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n"); 811 return -1; 812 } 813 814 if (old_priv.identity != priv->identity || 815 old_priv.model_id != priv->model_id || 816 old_priv.capabilities != priv->capabilities || 817 old_priv.ext_cap != priv->ext_cap) { 818 printk(KERN_ERR "Synaptics hardware appears to be different: " 819 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 820 old_priv.identity, priv->identity, 821 old_priv.model_id, priv->model_id, 822 old_priv.capabilities, priv->capabilities, 823 old_priv.ext_cap, priv->ext_cap); 824 return -1; 825 } 826 827 return 0; 828 } 829 830 static bool impaired_toshiba_kbc; 831 832 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 833 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 834 { 835 /* Toshiba Satellite */ 836 .matches = { 837 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 838 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 839 }, 840 }, 841 { 842 /* Toshiba Dynabook */ 843 .matches = { 844 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 845 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 846 }, 847 }, 848 { 849 /* Toshiba Portege M300 */ 850 .matches = { 851 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 852 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 853 }, 854 855 }, 856 { 857 /* Toshiba Portege M300 */ 858 .matches = { 859 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 860 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 861 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 862 }, 863 864 }, 865 #endif 866 { } 867 }; 868 869 static bool broken_olpc_ec; 870 871 static const struct dmi_system_id __initconst olpc_dmi_table[] = { 872 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 873 { 874 /* OLPC XO-1 or XO-1.5 */ 875 .matches = { 876 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 877 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 878 }, 879 }, 880 #endif 881 { } 882 }; 883 884 void __init synaptics_module_init(void) 885 { 886 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 887 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 888 } 889 890 int synaptics_init(struct psmouse *psmouse) 891 { 892 struct synaptics_data *priv; 893 894 /* 895 * The OLPC XO has issues with Synaptics' absolute mode; similarly to 896 * the HGPK, it quickly degrades and the hardware becomes jumpy and 897 * overly sensitive. Not only that, but the constant packet spew 898 * (even at a lowered 40pps rate) overloads the EC such that key 899 * presses on the keyboard are missed. Given all of that, don't 900 * even attempt to use Synaptics mode. Relative mode seems to work 901 * just fine. 902 */ 903 if (broken_olpc_ec) { 904 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n"); 905 return -ENODEV; 906 } 907 908 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 909 if (!priv) 910 return -ENOMEM; 911 912 psmouse_reset(psmouse); 913 914 if (synaptics_query_hardware(psmouse)) { 915 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 916 goto init_fail; 917 } 918 919 if (synaptics_set_absolute_mode(psmouse)) { 920 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 921 goto init_fail; 922 } 923 924 if (synaptics_set_advanced_gesture_mode(psmouse)) { 925 printk(KERN_ERR "Advanced gesture mode init failed.\n"); 926 goto init_fail; 927 } 928 929 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 930 931 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 932 SYN_ID_MODEL(priv->identity), 933 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 934 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 935 936 set_input_params(psmouse->dev, priv); 937 938 /* 939 * Encode touchpad model so that it can be used to set 940 * input device->id.version and be visible to userspace. 941 * Because version is __u16 we have to drop something. 942 * Hardware info bits seem to be good candidates as they 943 * are documented to be for Synaptics corp. internal use. 944 */ 945 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 946 (priv->model_id & 0x000000ff); 947 948 psmouse->protocol_handler = synaptics_process_byte; 949 psmouse->set_rate = synaptics_set_rate; 950 psmouse->disconnect = synaptics_disconnect; 951 psmouse->reconnect = synaptics_reconnect; 952 psmouse->cleanup = synaptics_reset; 953 psmouse->pktsize = 6; 954 /* Synaptics can usually stay in sync without extra help */ 955 psmouse->resync_time = 0; 956 957 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 958 synaptics_pt_create(psmouse); 959 960 /* 961 * Toshiba's KBC seems to have trouble handling data from 962 * Synaptics at full rate. Switch to a lower rate (roughly 963 * the same rate as a standard PS/2 mouse). 964 */ 965 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 966 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", 967 dmi_get_system_info(DMI_PRODUCT_NAME)); 968 psmouse->rate = 40; 969 } 970 971 return 0; 972 973 init_fail: 974 kfree(priv); 975 return -1; 976 } 977 978 bool synaptics_supported(void) 979 { 980 return true; 981 } 982 983 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 984 985 void __init synaptics_module_init(void) 986 { 987 } 988 989 int synaptics_init(struct psmouse *psmouse) 990 { 991 return -ENOSYS; 992 } 993 994 bool synaptics_supported(void) 995 { 996 return false; 997 } 998 999 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 1000