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 res[3]; 211 unsigned char max[3]; 212 213 if (SYN_ID_MAJOR(priv->identity) < 4) 214 return 0; 215 216 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res) == 0) { 217 if (res[0] != 0 && (res[1] & 0x80) && res[2] != 0) { 218 priv->x_res = res[0]; /* x resolution in units/mm */ 219 priv->y_res = res[2]; /* y resolution in units/mm */ 220 } 221 } 222 223 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && 224 SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { 225 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_DIMENSIONS, max)) { 226 printk(KERN_ERR "Synaptics claims to have dimensions query," 227 " but I'm not able to read it.\n"); 228 } else { 229 priv->x_max = (max[0] << 5) | ((max[1] & 0x0f) << 1); 230 priv->y_max = (max[2] << 5) | ((max[1] & 0xf0) >> 3); 231 } 232 } 233 234 return 0; 235 } 236 237 static int synaptics_query_hardware(struct psmouse *psmouse) 238 { 239 if (synaptics_identify(psmouse)) 240 return -1; 241 if (synaptics_model_id(psmouse)) 242 return -1; 243 if (synaptics_capability(psmouse)) 244 return -1; 245 if (synaptics_resolution(psmouse)) 246 return -1; 247 248 return 0; 249 } 250 251 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 252 { 253 struct synaptics_data *priv = psmouse->private; 254 255 priv->mode = SYN_BIT_ABSOLUTE_MODE; 256 if (SYN_ID_MAJOR(priv->identity) >= 4) 257 priv->mode |= SYN_BIT_DISABLE_GESTURE; 258 if (SYN_CAP_EXTENDED(priv->capabilities)) 259 priv->mode |= SYN_BIT_W_MODE; 260 261 if (synaptics_mode_cmd(psmouse, priv->mode)) 262 return -1; 263 264 return 0; 265 } 266 267 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 268 { 269 struct synaptics_data *priv = psmouse->private; 270 271 if (rate >= 80) { 272 priv->mode |= SYN_BIT_HIGH_RATE; 273 psmouse->rate = 80; 274 } else { 275 priv->mode &= ~SYN_BIT_HIGH_RATE; 276 psmouse->rate = 40; 277 } 278 279 synaptics_mode_cmd(psmouse, priv->mode); 280 } 281 282 static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) 283 { 284 static unsigned char param = 0xc8; 285 struct synaptics_data *priv = psmouse->private; 286 287 if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 288 return 0; 289 290 if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) 291 return -1; 292 if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) 293 return -1; 294 295 /* Advanced gesture mode also sends multi finger data */ 296 priv->capabilities |= BIT(1); 297 298 return 0; 299 } 300 301 /***************************************************************************** 302 * Synaptics pass-through PS/2 port support 303 ****************************************************************************/ 304 static int synaptics_pt_write(struct serio *serio, unsigned char c) 305 { 306 struct psmouse *parent = serio_get_drvdata(serio->parent); 307 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 308 309 if (psmouse_sliced_command(parent, c)) 310 return -1; 311 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 312 return -1; 313 return 0; 314 } 315 316 static int synaptics_pt_start(struct serio *serio) 317 { 318 struct psmouse *parent = serio_get_drvdata(serio->parent); 319 struct synaptics_data *priv = parent->private; 320 321 serio_pause_rx(parent->ps2dev.serio); 322 priv->pt_port = serio; 323 serio_continue_rx(parent->ps2dev.serio); 324 325 return 0; 326 } 327 328 static void synaptics_pt_stop(struct serio *serio) 329 { 330 struct psmouse *parent = serio_get_drvdata(serio->parent); 331 struct synaptics_data *priv = parent->private; 332 333 serio_pause_rx(parent->ps2dev.serio); 334 priv->pt_port = NULL; 335 serio_continue_rx(parent->ps2dev.serio); 336 } 337 338 static int synaptics_is_pt_packet(unsigned char *buf) 339 { 340 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 341 } 342 343 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 344 { 345 struct psmouse *child = serio_get_drvdata(ptport); 346 347 if (child && child->state == PSMOUSE_ACTIVATED) { 348 serio_interrupt(ptport, packet[1], 0); 349 serio_interrupt(ptport, packet[4], 0); 350 serio_interrupt(ptport, packet[5], 0); 351 if (child->pktsize == 4) 352 serio_interrupt(ptport, packet[2], 0); 353 } else 354 serio_interrupt(ptport, packet[1], 0); 355 } 356 357 static void synaptics_pt_activate(struct psmouse *psmouse) 358 { 359 struct synaptics_data *priv = psmouse->private; 360 struct psmouse *child = serio_get_drvdata(priv->pt_port); 361 362 /* adjust the touchpad to child's choice of protocol */ 363 if (child) { 364 if (child->pktsize == 4) 365 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 366 else 367 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 368 369 if (synaptics_mode_cmd(psmouse, priv->mode)) 370 printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); 371 } 372 } 373 374 static void synaptics_pt_create(struct psmouse *psmouse) 375 { 376 struct serio *serio; 377 378 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 379 if (!serio) { 380 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); 381 return; 382 } 383 384 serio->id.type = SERIO_PS_PSTHRU; 385 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 386 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 387 serio->write = synaptics_pt_write; 388 serio->start = synaptics_pt_start; 389 serio->stop = synaptics_pt_stop; 390 serio->parent = psmouse->ps2dev.serio; 391 392 psmouse->pt_activate = synaptics_pt_activate; 393 394 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); 395 serio_register_port(serio); 396 } 397 398 /***************************************************************************** 399 * Functions to interpret the absolute mode packets 400 ****************************************************************************/ 401 402 static int synaptics_parse_hw_state(const unsigned char buf[], 403 struct synaptics_data *priv, 404 struct synaptics_hw_state *hw) 405 { 406 memset(hw, 0, sizeof(struct synaptics_hw_state)); 407 408 if (SYN_MODEL_NEWABS(priv->model_id)) { 409 hw->x = (((buf[3] & 0x10) << 8) | 410 ((buf[1] & 0x0f) << 8) | 411 buf[4]); 412 hw->y = (((buf[3] & 0x20) << 7) | 413 ((buf[1] & 0xf0) << 4) | 414 buf[5]); 415 416 hw->z = buf[2]; 417 hw->w = (((buf[0] & 0x30) >> 2) | 418 ((buf[0] & 0x04) >> 1) | 419 ((buf[3] & 0x04) >> 2)); 420 421 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) { 422 /* Gesture packet: (x, y, z) at half resolution */ 423 priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; 424 priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; 425 priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; 426 return 1; 427 } 428 429 hw->left = (buf[0] & 0x01) ? 1 : 0; 430 hw->right = (buf[0] & 0x02) ? 1 : 0; 431 432 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 433 /* 434 * Clickpad's button is transmitted as middle button, 435 * however, since it is primary button, we will report 436 * it as BTN_LEFT. 437 */ 438 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 439 440 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 441 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 442 if (hw->w == 2) 443 hw->scroll = (signed char)(buf[1]); 444 } 445 446 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 447 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 448 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 449 } 450 451 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 452 ((buf[0] ^ buf[3]) & 0x02)) { 453 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 454 default: 455 /* 456 * if nExtBtn is greater than 8 it should be 457 * considered invalid and treated as 0 458 */ 459 break; 460 case 8: 461 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 462 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 463 case 6: 464 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 465 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 466 case 4: 467 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 468 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 469 case 2: 470 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 471 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 472 } 473 } 474 } else { 475 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 476 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 477 478 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 479 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 480 481 hw->left = (buf[0] & 0x01) ? 1 : 0; 482 hw->right = (buf[0] & 0x02) ? 1 : 0; 483 } 484 485 return 0; 486 } 487 488 static void set_slot(struct input_dev *dev, int slot, bool active, int x, int y) 489 { 490 input_mt_slot(dev, slot); 491 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); 492 if (active) { 493 input_report_abs(dev, ABS_MT_POSITION_X, x); 494 input_report_abs(dev, ABS_MT_POSITION_Y, 495 YMAX_NOMINAL + YMIN_NOMINAL - y); 496 } 497 } 498 499 static void synaptics_report_semi_mt_data(struct input_dev *dev, 500 const struct synaptics_hw_state *a, 501 const struct synaptics_hw_state *b, 502 int num_fingers) 503 { 504 if (num_fingers >= 2) { 505 set_slot(dev, 0, true, min(a->x, b->x), min(a->y, b->y)); 506 set_slot(dev, 1, true, max(a->x, b->x), max(a->y, b->y)); 507 } else if (num_fingers == 1) { 508 set_slot(dev, 0, true, a->x, a->y); 509 set_slot(dev, 1, false, 0, 0); 510 } else { 511 set_slot(dev, 0, false, 0, 0); 512 set_slot(dev, 1, false, 0, 0); 513 } 514 } 515 516 /* 517 * called for each full received packet from the touchpad 518 */ 519 static void synaptics_process_packet(struct psmouse *psmouse) 520 { 521 struct input_dev *dev = psmouse->dev; 522 struct synaptics_data *priv = psmouse->private; 523 struct synaptics_hw_state hw; 524 int num_fingers; 525 int finger_width; 526 int i; 527 528 if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) 529 return; 530 531 if (hw.scroll) { 532 priv->scroll += hw.scroll; 533 534 while (priv->scroll >= 4) { 535 input_report_key(dev, BTN_BACK, !hw.down); 536 input_sync(dev); 537 input_report_key(dev, BTN_BACK, hw.down); 538 input_sync(dev); 539 priv->scroll -= 4; 540 } 541 while (priv->scroll <= -4) { 542 input_report_key(dev, BTN_FORWARD, !hw.up); 543 input_sync(dev); 544 input_report_key(dev, BTN_FORWARD, hw.up); 545 input_sync(dev); 546 priv->scroll += 4; 547 } 548 return; 549 } 550 551 if (hw.z > 0 && hw.x > 1) { 552 num_fingers = 1; 553 finger_width = 5; 554 if (SYN_CAP_EXTENDED(priv->capabilities)) { 555 switch (hw.w) { 556 case 0 ... 1: 557 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 558 num_fingers = hw.w + 2; 559 break; 560 case 2: 561 if (SYN_MODEL_PEN(priv->model_id)) 562 ; /* Nothing, treat a pen as a single finger */ 563 break; 564 case 4 ... 15: 565 if (SYN_CAP_PALMDETECT(priv->capabilities)) 566 finger_width = hw.w; 567 break; 568 } 569 } 570 } else { 571 num_fingers = 0; 572 finger_width = 0; 573 } 574 575 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) 576 synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers); 577 578 /* Post events 579 * BTN_TOUCH has to be first as mousedev relies on it when doing 580 * absolute -> relative conversion 581 */ 582 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 583 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 584 585 if (num_fingers > 0) { 586 input_report_abs(dev, ABS_X, hw.x); 587 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); 588 } 589 input_report_abs(dev, ABS_PRESSURE, hw.z); 590 591 if (SYN_CAP_PALMDETECT(priv->capabilities)) 592 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 593 594 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 595 input_report_key(dev, BTN_LEFT, hw.left); 596 input_report_key(dev, BTN_RIGHT, hw.right); 597 598 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 599 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 600 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 601 } 602 603 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 604 input_report_key(dev, BTN_MIDDLE, hw.middle); 605 606 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 607 input_report_key(dev, BTN_FORWARD, hw.up); 608 input_report_key(dev, BTN_BACK, hw.down); 609 } 610 611 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 612 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); 613 614 input_sync(dev); 615 } 616 617 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) 618 { 619 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 620 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 621 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 622 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 623 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 624 625 if (idx < 0 || idx > 4) 626 return 0; 627 628 switch (pkt_type) { 629 630 case SYN_NEWABS: 631 case SYN_NEWABS_RELAXED: 632 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 633 634 case SYN_NEWABS_STRICT: 635 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 636 637 case SYN_OLDABS: 638 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 639 640 default: 641 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); 642 return 0; 643 } 644 } 645 646 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 647 { 648 int i; 649 650 for (i = 0; i < 5; i++) 651 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { 652 printk(KERN_INFO "synaptics: using relaxed packet validation\n"); 653 return SYN_NEWABS_RELAXED; 654 } 655 656 return SYN_NEWABS_STRICT; 657 } 658 659 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 660 { 661 struct synaptics_data *priv = psmouse->private; 662 663 if (psmouse->pktcnt >= 6) { /* Full packet received */ 664 if (unlikely(priv->pkt_type == SYN_NEWABS)) 665 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 666 667 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && 668 synaptics_is_pt_packet(psmouse->packet)) { 669 if (priv->pt_port) 670 synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); 671 } else 672 synaptics_process_packet(psmouse); 673 674 return PSMOUSE_FULL_PACKET; 675 } 676 677 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? 678 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 679 } 680 681 /***************************************************************************** 682 * Driver initialization/cleanup functions 683 ****************************************************************************/ 684 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 685 { 686 int i; 687 688 __set_bit(INPUT_PROP_POINTER, dev->propbit); 689 690 __set_bit(EV_ABS, dev->evbit); 691 input_set_abs_params(dev, ABS_X, 692 XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0); 693 input_set_abs_params(dev, ABS_Y, 694 YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0); 695 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 696 697 if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { 698 __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); 699 input_mt_init_slots(dev, 2); 700 input_set_abs_params(dev, ABS_MT_POSITION_X, XMIN_NOMINAL, 701 priv->x_max ?: XMAX_NOMINAL, 0, 0); 702 input_set_abs_params(dev, ABS_MT_POSITION_Y, YMIN_NOMINAL, 703 priv->y_max ?: YMAX_NOMINAL, 0, 0); 704 } 705 706 if (SYN_CAP_PALMDETECT(priv->capabilities)) 707 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); 708 709 __set_bit(EV_KEY, dev->evbit); 710 __set_bit(BTN_TOUCH, dev->keybit); 711 __set_bit(BTN_TOOL_FINGER, dev->keybit); 712 __set_bit(BTN_LEFT, dev->keybit); 713 __set_bit(BTN_RIGHT, dev->keybit); 714 715 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 716 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 717 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 718 } 719 720 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 721 __set_bit(BTN_MIDDLE, dev->keybit); 722 723 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 724 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 725 __set_bit(BTN_FORWARD, dev->keybit); 726 __set_bit(BTN_BACK, dev->keybit); 727 } 728 729 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 730 __set_bit(BTN_0 + i, dev->keybit); 731 732 __clear_bit(EV_REL, dev->evbit); 733 __clear_bit(REL_X, dev->relbit); 734 __clear_bit(REL_Y, dev->relbit); 735 736 input_abs_set_res(dev, ABS_X, priv->x_res); 737 input_abs_set_res(dev, ABS_Y, priv->y_res); 738 739 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 740 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); 741 /* Clickpads report only left button */ 742 __clear_bit(BTN_RIGHT, dev->keybit); 743 __clear_bit(BTN_MIDDLE, dev->keybit); 744 } 745 } 746 747 static void synaptics_disconnect(struct psmouse *psmouse) 748 { 749 synaptics_reset(psmouse); 750 kfree(psmouse->private); 751 psmouse->private = NULL; 752 } 753 754 static int synaptics_reconnect(struct psmouse *psmouse) 755 { 756 struct synaptics_data *priv = psmouse->private; 757 struct synaptics_data old_priv = *priv; 758 int retry = 0; 759 int error; 760 761 do { 762 psmouse_reset(psmouse); 763 error = synaptics_detect(psmouse, 0); 764 } while (error && ++retry < 3); 765 766 if (error) 767 return -1; 768 769 if (retry > 1) 770 printk(KERN_DEBUG "Synaptics reconnected after %d tries\n", 771 retry); 772 773 if (synaptics_query_hardware(psmouse)) { 774 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 775 return -1; 776 } 777 778 if (synaptics_set_absolute_mode(psmouse)) { 779 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 780 return -1; 781 } 782 783 if (synaptics_set_advanced_gesture_mode(psmouse)) { 784 printk(KERN_ERR "Advanced gesture mode reconnect failed.\n"); 785 return -1; 786 } 787 788 if (old_priv.identity != priv->identity || 789 old_priv.model_id != priv->model_id || 790 old_priv.capabilities != priv->capabilities || 791 old_priv.ext_cap != priv->ext_cap) { 792 printk(KERN_ERR "Synaptics hardware appears to be different: " 793 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 794 old_priv.identity, priv->identity, 795 old_priv.model_id, priv->model_id, 796 old_priv.capabilities, priv->capabilities, 797 old_priv.ext_cap, priv->ext_cap); 798 return -1; 799 } 800 801 return 0; 802 } 803 804 static bool impaired_toshiba_kbc; 805 806 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 807 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 808 { 809 /* Toshiba Satellite */ 810 .matches = { 811 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 812 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 813 }, 814 }, 815 { 816 /* Toshiba Dynabook */ 817 .matches = { 818 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 819 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 820 }, 821 }, 822 { 823 /* Toshiba Portege M300 */ 824 .matches = { 825 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 826 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 827 }, 828 829 }, 830 { 831 /* Toshiba Portege M300 */ 832 .matches = { 833 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 834 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 835 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 836 }, 837 838 }, 839 { } 840 #endif 841 }; 842 843 static bool broken_olpc_ec; 844 845 static const struct dmi_system_id __initconst olpc_dmi_table[] = { 846 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) 847 { 848 /* OLPC XO-1 or XO-1.5 */ 849 .matches = { 850 DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), 851 DMI_MATCH(DMI_PRODUCT_NAME, "XO"), 852 }, 853 }, 854 { } 855 #endif 856 }; 857 858 void __init synaptics_module_init(void) 859 { 860 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 861 broken_olpc_ec = dmi_check_system(olpc_dmi_table); 862 } 863 864 int synaptics_init(struct psmouse *psmouse) 865 { 866 struct synaptics_data *priv; 867 868 /* 869 * The OLPC XO has issues with Synaptics' absolute mode; similarly to 870 * the HGPK, it quickly degrades and the hardware becomes jumpy and 871 * overly sensitive. Not only that, but the constant packet spew 872 * (even at a lowered 40pps rate) overloads the EC such that key 873 * presses on the keyboard are missed. Given all of that, don't 874 * even attempt to use Synaptics mode. Relative mode seems to work 875 * just fine. 876 */ 877 if (broken_olpc_ec) { 878 printk(KERN_INFO "synaptics: OLPC XO detected, not enabling Synaptics protocol.\n"); 879 return -ENODEV; 880 } 881 882 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 883 if (!priv) 884 return -ENOMEM; 885 886 psmouse_reset(psmouse); 887 888 if (synaptics_query_hardware(psmouse)) { 889 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 890 goto init_fail; 891 } 892 893 if (synaptics_set_absolute_mode(psmouse)) { 894 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 895 goto init_fail; 896 } 897 898 if (synaptics_set_advanced_gesture_mode(psmouse)) { 899 printk(KERN_ERR "Advanced gesture mode init failed.\n"); 900 goto init_fail; 901 } 902 903 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 904 905 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 906 SYN_ID_MODEL(priv->identity), 907 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 908 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 909 910 set_input_params(psmouse->dev, priv); 911 912 /* 913 * Encode touchpad model so that it can be used to set 914 * input device->id.version and be visible to userspace. 915 * Because version is __u16 we have to drop something. 916 * Hardware info bits seem to be good candidates as they 917 * are documented to be for Synaptics corp. internal use. 918 */ 919 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 920 (priv->model_id & 0x000000ff); 921 922 psmouse->protocol_handler = synaptics_process_byte; 923 psmouse->set_rate = synaptics_set_rate; 924 psmouse->disconnect = synaptics_disconnect; 925 psmouse->reconnect = synaptics_reconnect; 926 psmouse->cleanup = synaptics_reset; 927 psmouse->pktsize = 6; 928 /* Synaptics can usually stay in sync without extra help */ 929 psmouse->resync_time = 0; 930 931 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 932 synaptics_pt_create(psmouse); 933 934 /* 935 * Toshiba's KBC seems to have trouble handling data from 936 * Synaptics at full rate. Switch to a lower rate (roughly 937 * the same rate as a standard PS/2 mouse). 938 */ 939 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 940 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", 941 dmi_get_system_info(DMI_PRODUCT_NAME)); 942 psmouse->rate = 40; 943 } 944 945 return 0; 946 947 init_fail: 948 kfree(priv); 949 return -1; 950 } 951 952 bool synaptics_supported(void) 953 { 954 return true; 955 } 956 957 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 958 959 void __init synaptics_module_init(void) 960 { 961 } 962 963 int synaptics_init(struct psmouse *psmouse) 964 { 965 return -ENOSYS; 966 } 967 968 bool synaptics_supported(void) 969 { 970 return false; 971 } 972 973 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 974 975