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.h> 29 #include <linux/serio.h> 30 #include <linux/libps2.h> 31 #include "psmouse.h" 32 #include "synaptics.h" 33 34 /* 35 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 36 * section 2.3.2, which says that they should be valid regardless of the 37 * actual size of the sensor. 38 */ 39 #define XMIN_NOMINAL 1472 40 #define XMAX_NOMINAL 5472 41 #define YMIN_NOMINAL 1408 42 #define YMAX_NOMINAL 4448 43 44 45 /***************************************************************************** 46 * Stuff we need even when we do not want native Synaptics support 47 ****************************************************************************/ 48 49 /* 50 * Set the synaptics touchpad mode byte by special commands 51 */ 52 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 53 { 54 unsigned char param[1]; 55 56 if (psmouse_sliced_command(psmouse, mode)) 57 return -1; 58 param[0] = SYN_PS_SET_MODE2; 59 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 60 return -1; 61 return 0; 62 } 63 64 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 65 { 66 struct ps2dev *ps2dev = &psmouse->ps2dev; 67 unsigned char param[4]; 68 69 param[0] = 0; 70 71 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 72 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 73 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 74 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 75 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 76 77 if (param[1] != 0x47) 78 return -ENODEV; 79 80 if (set_properties) { 81 psmouse->vendor = "Synaptics"; 82 psmouse->name = "TouchPad"; 83 } 84 85 return 0; 86 } 87 88 void synaptics_reset(struct psmouse *psmouse) 89 { 90 /* reset touchpad back to relative mode, gestures enabled */ 91 synaptics_mode_cmd(psmouse, 0); 92 } 93 94 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 95 96 /***************************************************************************** 97 * Synaptics communications functions 98 ****************************************************************************/ 99 100 /* 101 * Send a command to the synpatics touchpad by special commands 102 */ 103 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 104 { 105 if (psmouse_sliced_command(psmouse, c)) 106 return -1; 107 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 108 return -1; 109 return 0; 110 } 111 112 /* 113 * Read the model-id bytes from the touchpad 114 * see also SYN_MODEL_* macros 115 */ 116 static int synaptics_model_id(struct psmouse *psmouse) 117 { 118 struct synaptics_data *priv = psmouse->private; 119 unsigned char mi[3]; 120 121 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 122 return -1; 123 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 124 return 0; 125 } 126 127 /* 128 * Read the capability-bits from the touchpad 129 * see also the SYN_CAP_* macros 130 */ 131 static int synaptics_capability(struct psmouse *psmouse) 132 { 133 struct synaptics_data *priv = psmouse->private; 134 unsigned char cap[3]; 135 136 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 137 return -1; 138 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 139 priv->ext_cap = 0; 140 if (!SYN_CAP_VALID(priv->capabilities)) 141 return -1; 142 143 /* 144 * Unless capExtended is set the rest of the flags should be ignored 145 */ 146 if (!SYN_CAP_EXTENDED(priv->capabilities)) 147 priv->capabilities = 0; 148 149 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 150 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 151 printk(KERN_ERR "Synaptics claims to have extended capabilities," 152 " but I'm not able to read them."); 153 } else { 154 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 155 156 /* 157 * if nExtBtn is greater than 8 it should be considered 158 * invalid and treated as 0 159 */ 160 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 161 priv->ext_cap &= 0xff0fff; 162 } 163 } 164 return 0; 165 } 166 167 /* 168 * Identify Touchpad 169 * See also the SYN_ID_* macros 170 */ 171 static int synaptics_identify(struct psmouse *psmouse) 172 { 173 struct synaptics_data *priv = psmouse->private; 174 unsigned char id[3]; 175 176 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 177 return -1; 178 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 179 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 180 return 0; 181 return -1; 182 } 183 184 /* 185 * Read touchpad resolution 186 * Resolution is left zero if touchpad does not support the query 187 */ 188 static int synaptics_resolution(struct psmouse *psmouse) 189 { 190 struct synaptics_data *priv = psmouse->private; 191 unsigned char res[3]; 192 193 if (SYN_ID_MAJOR(priv->identity) < 4) 194 return 0; 195 196 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res)) 197 return 0; 198 199 if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) { 200 priv->x_res = res[0]; /* x resolution in units/mm */ 201 priv->y_res = res[2]; /* y resolution in units/mm */ 202 } 203 204 return 0; 205 } 206 207 static int synaptics_query_hardware(struct psmouse *psmouse) 208 { 209 if (synaptics_identify(psmouse)) 210 return -1; 211 if (synaptics_model_id(psmouse)) 212 return -1; 213 if (synaptics_capability(psmouse)) 214 return -1; 215 if (synaptics_resolution(psmouse)) 216 return -1; 217 218 return 0; 219 } 220 221 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 222 { 223 struct synaptics_data *priv = psmouse->private; 224 225 priv->mode = SYN_BIT_ABSOLUTE_MODE; 226 if (SYN_ID_MAJOR(priv->identity) >= 4) 227 priv->mode |= SYN_BIT_DISABLE_GESTURE; 228 if (SYN_CAP_EXTENDED(priv->capabilities)) 229 priv->mode |= SYN_BIT_W_MODE; 230 231 if (synaptics_mode_cmd(psmouse, priv->mode)) 232 return -1; 233 234 return 0; 235 } 236 237 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 238 { 239 struct synaptics_data *priv = psmouse->private; 240 241 if (rate >= 80) { 242 priv->mode |= SYN_BIT_HIGH_RATE; 243 psmouse->rate = 80; 244 } else { 245 priv->mode &= ~SYN_BIT_HIGH_RATE; 246 psmouse->rate = 40; 247 } 248 249 synaptics_mode_cmd(psmouse, priv->mode); 250 } 251 252 /***************************************************************************** 253 * Synaptics pass-through PS/2 port support 254 ****************************************************************************/ 255 static int synaptics_pt_write(struct serio *serio, unsigned char c) 256 { 257 struct psmouse *parent = serio_get_drvdata(serio->parent); 258 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 259 260 if (psmouse_sliced_command(parent, c)) 261 return -1; 262 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 263 return -1; 264 return 0; 265 } 266 267 static inline int synaptics_is_pt_packet(unsigned char *buf) 268 { 269 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 270 } 271 272 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 273 { 274 struct psmouse *child = serio_get_drvdata(ptport); 275 276 if (child && child->state == PSMOUSE_ACTIVATED) { 277 serio_interrupt(ptport, packet[1], 0); 278 serio_interrupt(ptport, packet[4], 0); 279 serio_interrupt(ptport, packet[5], 0); 280 if (child->pktsize == 4) 281 serio_interrupt(ptport, packet[2], 0); 282 } else 283 serio_interrupt(ptport, packet[1], 0); 284 } 285 286 static void synaptics_pt_activate(struct psmouse *psmouse) 287 { 288 struct serio *ptport = psmouse->ps2dev.serio->child; 289 struct psmouse *child = serio_get_drvdata(ptport); 290 struct synaptics_data *priv = psmouse->private; 291 292 /* adjust the touchpad to child's choice of protocol */ 293 if (child) { 294 if (child->pktsize == 4) 295 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 296 else 297 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 298 299 if (synaptics_mode_cmd(psmouse, priv->mode)) 300 printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); 301 } 302 } 303 304 static void synaptics_pt_create(struct psmouse *psmouse) 305 { 306 struct serio *serio; 307 308 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 309 if (!serio) { 310 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); 311 return; 312 } 313 314 serio->id.type = SERIO_PS_PSTHRU; 315 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 316 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 317 serio->write = synaptics_pt_write; 318 serio->parent = psmouse->ps2dev.serio; 319 320 psmouse->pt_activate = synaptics_pt_activate; 321 322 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); 323 serio_register_port(serio); 324 } 325 326 /***************************************************************************** 327 * Functions to interpret the absolute mode packets 328 ****************************************************************************/ 329 330 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) 331 { 332 memset(hw, 0, sizeof(struct synaptics_hw_state)); 333 334 if (SYN_MODEL_NEWABS(priv->model_id)) { 335 hw->x = (((buf[3] & 0x10) << 8) | 336 ((buf[1] & 0x0f) << 8) | 337 buf[4]); 338 hw->y = (((buf[3] & 0x20) << 7) | 339 ((buf[1] & 0xf0) << 4) | 340 buf[5]); 341 342 hw->z = buf[2]; 343 hw->w = (((buf[0] & 0x30) >> 2) | 344 ((buf[0] & 0x04) >> 1) | 345 ((buf[3] & 0x04) >> 2)); 346 347 hw->left = (buf[0] & 0x01) ? 1 : 0; 348 hw->right = (buf[0] & 0x02) ? 1 : 0; 349 350 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 351 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 352 if (hw->w == 2) 353 hw->scroll = (signed char)(buf[1]); 354 } 355 356 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 357 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 358 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 359 } 360 361 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 362 ((buf[0] ^ buf[3]) & 0x02)) { 363 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 364 default: 365 /* 366 * if nExtBtn is greater than 8 it should be 367 * considered invalid and treated as 0 368 */ 369 break; 370 case 8: 371 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 372 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 373 case 6: 374 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 375 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 376 case 4: 377 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 378 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 379 case 2: 380 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 381 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 382 } 383 } 384 } else { 385 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 386 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 387 388 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 389 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 390 391 hw->left = (buf[0] & 0x01) ? 1 : 0; 392 hw->right = (buf[0] & 0x02) ? 1 : 0; 393 } 394 } 395 396 /* 397 * called for each full received packet from the touchpad 398 */ 399 static void synaptics_process_packet(struct psmouse *psmouse) 400 { 401 struct input_dev *dev = psmouse->dev; 402 struct synaptics_data *priv = psmouse->private; 403 struct synaptics_hw_state hw; 404 int num_fingers; 405 int finger_width; 406 int i; 407 408 synaptics_parse_hw_state(psmouse->packet, priv, &hw); 409 410 if (hw.scroll) { 411 priv->scroll += hw.scroll; 412 413 while (priv->scroll >= 4) { 414 input_report_key(dev, BTN_BACK, !hw.down); 415 input_sync(dev); 416 input_report_key(dev, BTN_BACK, hw.down); 417 input_sync(dev); 418 priv->scroll -= 4; 419 } 420 while (priv->scroll <= -4) { 421 input_report_key(dev, BTN_FORWARD, !hw.up); 422 input_sync(dev); 423 input_report_key(dev, BTN_FORWARD, hw.up); 424 input_sync(dev); 425 priv->scroll += 4; 426 } 427 return; 428 } 429 430 if (hw.z > 0) { 431 num_fingers = 1; 432 finger_width = 5; 433 if (SYN_CAP_EXTENDED(priv->capabilities)) { 434 switch (hw.w) { 435 case 0 ... 1: 436 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 437 num_fingers = hw.w + 2; 438 break; 439 case 2: 440 if (SYN_MODEL_PEN(priv->model_id)) 441 ; /* Nothing, treat a pen as a single finger */ 442 break; 443 case 4 ... 15: 444 if (SYN_CAP_PALMDETECT(priv->capabilities)) 445 finger_width = hw.w; 446 break; 447 } 448 } 449 } else { 450 num_fingers = 0; 451 finger_width = 0; 452 } 453 454 /* Post events 455 * BTN_TOUCH has to be first as mousedev relies on it when doing 456 * absolute -> relative conversion 457 */ 458 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 459 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 460 461 if (hw.z > 0) { 462 input_report_abs(dev, ABS_X, hw.x); 463 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); 464 } 465 input_report_abs(dev, ABS_PRESSURE, hw.z); 466 467 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 468 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 469 input_report_key(dev, BTN_LEFT, hw.left); 470 input_report_key(dev, BTN_RIGHT, hw.right); 471 472 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 473 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 474 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 475 } 476 477 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 478 input_report_key(dev, BTN_MIDDLE, hw.middle); 479 480 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 481 input_report_key(dev, BTN_FORWARD, hw.up); 482 input_report_key(dev, BTN_BACK, hw.down); 483 } 484 485 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 486 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); 487 488 input_sync(dev); 489 } 490 491 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) 492 { 493 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 494 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 495 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 496 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 497 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 498 499 if (idx < 0 || idx > 4) 500 return 0; 501 502 switch (pkt_type) { 503 case SYN_NEWABS: 504 case SYN_NEWABS_RELAXED: 505 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 506 507 case SYN_NEWABS_STRICT: 508 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 509 510 case SYN_OLDABS: 511 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 512 513 default: 514 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); 515 return 0; 516 } 517 } 518 519 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 520 { 521 int i; 522 523 for (i = 0; i < 5; i++) 524 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { 525 printk(KERN_INFO "synaptics: using relaxed packet validation\n"); 526 return SYN_NEWABS_RELAXED; 527 } 528 529 return SYN_NEWABS_STRICT; 530 } 531 532 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 533 { 534 struct synaptics_data *priv = psmouse->private; 535 536 if (psmouse->pktcnt >= 6) { /* Full packet received */ 537 if (unlikely(priv->pkt_type == SYN_NEWABS)) 538 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 539 540 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) { 541 if (psmouse->ps2dev.serio->child) 542 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet); 543 } else 544 synaptics_process_packet(psmouse); 545 546 return PSMOUSE_FULL_PACKET; 547 } 548 549 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? 550 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 551 } 552 553 /***************************************************************************** 554 * Driver initialization/cleanup functions 555 ****************************************************************************/ 556 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 557 { 558 int i; 559 560 __set_bit(EV_ABS, dev->evbit); 561 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0); 562 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0); 563 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 564 __set_bit(ABS_TOOL_WIDTH, dev->absbit); 565 566 __set_bit(EV_KEY, dev->evbit); 567 __set_bit(BTN_TOUCH, dev->keybit); 568 __set_bit(BTN_TOOL_FINGER, dev->keybit); 569 __set_bit(BTN_LEFT, dev->keybit); 570 __set_bit(BTN_RIGHT, dev->keybit); 571 572 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 573 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 574 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 575 } 576 577 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 578 __set_bit(BTN_MIDDLE, dev->keybit); 579 580 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 581 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 582 __set_bit(BTN_FORWARD, dev->keybit); 583 __set_bit(BTN_BACK, dev->keybit); 584 } 585 586 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 587 __set_bit(BTN_0 + i, dev->keybit); 588 589 __clear_bit(EV_REL, dev->evbit); 590 __clear_bit(REL_X, dev->relbit); 591 __clear_bit(REL_Y, dev->relbit); 592 593 dev->absres[ABS_X] = priv->x_res; 594 dev->absres[ABS_Y] = priv->y_res; 595 } 596 597 static void synaptics_disconnect(struct psmouse *psmouse) 598 { 599 synaptics_reset(psmouse); 600 kfree(psmouse->private); 601 psmouse->private = NULL; 602 } 603 604 static int synaptics_reconnect(struct psmouse *psmouse) 605 { 606 struct synaptics_data *priv = psmouse->private; 607 struct synaptics_data old_priv = *priv; 608 609 psmouse_reset(psmouse); 610 611 if (synaptics_detect(psmouse, 0)) 612 return -1; 613 614 if (synaptics_query_hardware(psmouse)) { 615 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 616 return -1; 617 } 618 619 if (old_priv.identity != priv->identity || 620 old_priv.model_id != priv->model_id || 621 old_priv.capabilities != priv->capabilities || 622 old_priv.ext_cap != priv->ext_cap) 623 return -1; 624 625 if (synaptics_set_absolute_mode(psmouse)) { 626 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 627 return -1; 628 } 629 630 return 0; 631 } 632 633 static bool impaired_toshiba_kbc; 634 635 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 636 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 637 { 638 /* Toshiba Satellite */ 639 .matches = { 640 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 641 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 642 }, 643 }, 644 { 645 /* Toshiba Dynabook */ 646 .matches = { 647 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 648 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 649 }, 650 }, 651 { 652 /* Toshiba Portege M300 */ 653 .matches = { 654 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 655 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 656 }, 657 658 }, 659 { 660 /* Toshiba Portege M300 */ 661 .matches = { 662 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 663 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 664 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 665 }, 666 667 }, 668 { } 669 #endif 670 }; 671 672 void __init synaptics_module_init(void) 673 { 674 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 675 } 676 677 int synaptics_init(struct psmouse *psmouse) 678 { 679 struct synaptics_data *priv; 680 681 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 682 if (!priv) 683 return -1; 684 685 psmouse_reset(psmouse); 686 687 if (synaptics_query_hardware(psmouse)) { 688 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 689 goto init_fail; 690 } 691 692 if (synaptics_set_absolute_mode(psmouse)) { 693 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 694 goto init_fail; 695 } 696 697 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 698 699 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n", 700 SYN_ID_MODEL(priv->identity), 701 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 702 priv->model_id, priv->capabilities, priv->ext_cap); 703 704 set_input_params(psmouse->dev, priv); 705 706 /* 707 * Encode touchpad model so that it can be used to set 708 * input device->id.version and be visible to userspace. 709 * Because version is __u16 we have to drop something. 710 * Hardware info bits seem to be good candidates as they 711 * are documented to be for Synaptics corp. internal use. 712 */ 713 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 714 (priv->model_id & 0x000000ff); 715 716 psmouse->protocol_handler = synaptics_process_byte; 717 psmouse->set_rate = synaptics_set_rate; 718 psmouse->disconnect = synaptics_disconnect; 719 psmouse->reconnect = synaptics_reconnect; 720 psmouse->cleanup = synaptics_reset; 721 psmouse->pktsize = 6; 722 /* Synaptics can usually stay in sync without extra help */ 723 psmouse->resync_time = 0; 724 725 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 726 synaptics_pt_create(psmouse); 727 728 /* 729 * Toshiba's KBC seems to have trouble handling data from 730 * Synaptics as full rate, switch to lower rate which is roughly 731 * thye same as rate of standard PS/2 mouse. 732 */ 733 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 734 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", 735 dmi_get_system_info(DMI_PRODUCT_NAME)); 736 psmouse->rate = 40; 737 } 738 739 return 0; 740 741 init_fail: 742 kfree(priv); 743 return -1; 744 } 745 746 bool synaptics_supported(void) 747 { 748 return true; 749 } 750 751 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 752 753 void __init synaptics_module_init(void) 754 { 755 } 756 757 int synaptics_init(struct psmouse *psmouse) 758 { 759 return -ENOSYS; 760 } 761 762 bool synaptics_supported(void) 763 { 764 return false; 765 } 766 767 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 768 769