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/input.h> 28 #include <linux/serio.h> 29 #include <linux/libps2.h> 30 #include "psmouse.h" 31 #include "synaptics.h" 32 33 /* 34 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, 35 * section 2.3.2, which says that they should be valid regardless of the 36 * actual size of the sensor. 37 */ 38 #define XMIN_NOMINAL 1472 39 #define XMAX_NOMINAL 5472 40 #define YMIN_NOMINAL 1408 41 #define YMAX_NOMINAL 4448 42 43 44 /***************************************************************************** 45 * Stuff we need even when we do not want native Synaptics support 46 ****************************************************************************/ 47 48 /* 49 * Set the synaptics touchpad mode byte by special commands 50 */ 51 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 52 { 53 unsigned char param[1]; 54 55 if (psmouse_sliced_command(psmouse, mode)) 56 return -1; 57 param[0] = SYN_PS_SET_MODE2; 58 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 59 return -1; 60 return 0; 61 } 62 63 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 64 { 65 struct ps2dev *ps2dev = &psmouse->ps2dev; 66 unsigned char param[4]; 67 68 param[0] = 0; 69 70 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); 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_GETINFO); 75 76 if (param[1] != 0x47) 77 return -ENODEV; 78 79 if (set_properties) { 80 psmouse->vendor = "Synaptics"; 81 psmouse->name = "TouchPad"; 82 } 83 84 return 0; 85 } 86 87 void synaptics_reset(struct psmouse *psmouse) 88 { 89 /* reset touchpad back to relative mode, gestures enabled */ 90 synaptics_mode_cmd(psmouse, 0); 91 } 92 93 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 94 95 /***************************************************************************** 96 * Synaptics communications functions 97 ****************************************************************************/ 98 99 /* 100 * Send a command to the synpatics touchpad by special commands 101 */ 102 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 103 { 104 if (psmouse_sliced_command(psmouse, c)) 105 return -1; 106 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 107 return -1; 108 return 0; 109 } 110 111 /* 112 * Read the model-id bytes from the touchpad 113 * see also SYN_MODEL_* macros 114 */ 115 static int synaptics_model_id(struct psmouse *psmouse) 116 { 117 struct synaptics_data *priv = psmouse->private; 118 unsigned char mi[3]; 119 120 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 121 return -1; 122 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 123 return 0; 124 } 125 126 /* 127 * Read the capability-bits from the touchpad 128 * see also the SYN_CAP_* macros 129 */ 130 static int synaptics_capability(struct psmouse *psmouse) 131 { 132 struct synaptics_data *priv = psmouse->private; 133 unsigned char cap[3]; 134 135 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 136 return -1; 137 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 138 priv->ext_cap = 0; 139 if (!SYN_CAP_VALID(priv->capabilities)) 140 return -1; 141 142 /* 143 * Unless capExtended is set the rest of the flags should be ignored 144 */ 145 if (!SYN_CAP_EXTENDED(priv->capabilities)) 146 priv->capabilities = 0; 147 148 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 149 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 150 printk(KERN_ERR "Synaptics claims to have extended capabilities," 151 " but I'm not able to read them."); 152 } else { 153 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 154 155 /* 156 * if nExtBtn is greater than 8 it should be considered 157 * invalid and treated as 0 158 */ 159 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 160 priv->ext_cap &= 0xff0fff; 161 } 162 } 163 return 0; 164 } 165 166 /* 167 * Identify Touchpad 168 * See also the SYN_ID_* macros 169 */ 170 static int synaptics_identify(struct psmouse *psmouse) 171 { 172 struct synaptics_data *priv = psmouse->private; 173 unsigned char id[3]; 174 175 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 176 return -1; 177 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 178 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 179 return 0; 180 return -1; 181 } 182 183 /* 184 * Read touchpad resolution 185 * Resolution is left zero if touchpad does not support the query 186 */ 187 static int synaptics_resolution(struct psmouse *psmouse) 188 { 189 struct synaptics_data *priv = psmouse->private; 190 unsigned char res[3]; 191 192 if (SYN_ID_MAJOR(priv->identity) < 4) 193 return 0; 194 195 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res)) 196 return 0; 197 198 if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) { 199 priv->x_res = res[0]; /* x resolution in units/mm */ 200 priv->y_res = res[2]; /* y resolution in units/mm */ 201 } 202 203 return 0; 204 } 205 206 static int synaptics_query_hardware(struct psmouse *psmouse) 207 { 208 if (synaptics_identify(psmouse)) 209 return -1; 210 if (synaptics_model_id(psmouse)) 211 return -1; 212 if (synaptics_capability(psmouse)) 213 return -1; 214 if (synaptics_resolution(psmouse)) 215 return -1; 216 217 return 0; 218 } 219 220 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 221 { 222 struct synaptics_data *priv = psmouse->private; 223 224 priv->mode = SYN_BIT_ABSOLUTE_MODE; 225 if (SYN_ID_MAJOR(priv->identity) >= 4) 226 priv->mode |= SYN_BIT_DISABLE_GESTURE; 227 if (SYN_CAP_EXTENDED(priv->capabilities)) 228 priv->mode |= SYN_BIT_W_MODE; 229 230 if (synaptics_mode_cmd(psmouse, priv->mode)) 231 return -1; 232 233 return 0; 234 } 235 236 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 237 { 238 struct synaptics_data *priv = psmouse->private; 239 240 if (rate >= 80) { 241 priv->mode |= SYN_BIT_HIGH_RATE; 242 psmouse->rate = 80; 243 } else { 244 priv->mode &= ~SYN_BIT_HIGH_RATE; 245 psmouse->rate = 40; 246 } 247 248 synaptics_mode_cmd(psmouse, priv->mode); 249 } 250 251 /***************************************************************************** 252 * Synaptics pass-through PS/2 port support 253 ****************************************************************************/ 254 static int synaptics_pt_write(struct serio *serio, unsigned char c) 255 { 256 struct psmouse *parent = serio_get_drvdata(serio->parent); 257 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 258 259 if (psmouse_sliced_command(parent, c)) 260 return -1; 261 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 262 return -1; 263 return 0; 264 } 265 266 static inline int synaptics_is_pt_packet(unsigned char *buf) 267 { 268 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 269 } 270 271 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 272 { 273 struct psmouse *child = serio_get_drvdata(ptport); 274 275 if (child && child->state == PSMOUSE_ACTIVATED) { 276 serio_interrupt(ptport, packet[1], 0); 277 serio_interrupt(ptport, packet[4], 0); 278 serio_interrupt(ptport, packet[5], 0); 279 if (child->pktsize == 4) 280 serio_interrupt(ptport, packet[2], 0); 281 } else 282 serio_interrupt(ptport, packet[1], 0); 283 } 284 285 static void synaptics_pt_activate(struct psmouse *psmouse) 286 { 287 struct serio *ptport = psmouse->ps2dev.serio->child; 288 struct psmouse *child = serio_get_drvdata(ptport); 289 struct synaptics_data *priv = psmouse->private; 290 291 /* adjust the touchpad to child's choice of protocol */ 292 if (child) { 293 if (child->pktsize == 4) 294 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 295 else 296 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 297 298 if (synaptics_mode_cmd(psmouse, priv->mode)) 299 printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); 300 } 301 } 302 303 static void synaptics_pt_create(struct psmouse *psmouse) 304 { 305 struct serio *serio; 306 307 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 308 if (!serio) { 309 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); 310 return; 311 } 312 313 serio->id.type = SERIO_PS_PSTHRU; 314 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 315 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 316 serio->write = synaptics_pt_write; 317 serio->parent = psmouse->ps2dev.serio; 318 319 psmouse->pt_activate = synaptics_pt_activate; 320 321 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); 322 serio_register_port(serio); 323 } 324 325 /***************************************************************************** 326 * Functions to interpret the absolute mode packets 327 ****************************************************************************/ 328 329 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) 330 { 331 memset(hw, 0, sizeof(struct synaptics_hw_state)); 332 333 if (SYN_MODEL_NEWABS(priv->model_id)) { 334 hw->x = (((buf[3] & 0x10) << 8) | 335 ((buf[1] & 0x0f) << 8) | 336 buf[4]); 337 hw->y = (((buf[3] & 0x20) << 7) | 338 ((buf[1] & 0xf0) << 4) | 339 buf[5]); 340 341 hw->z = buf[2]; 342 hw->w = (((buf[0] & 0x30) >> 2) | 343 ((buf[0] & 0x04) >> 1) | 344 ((buf[3] & 0x04) >> 2)); 345 346 hw->left = (buf[0] & 0x01) ? 1 : 0; 347 hw->right = (buf[0] & 0x02) ? 1 : 0; 348 349 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 350 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 351 if (hw->w == 2) 352 hw->scroll = (signed char)(buf[1]); 353 } 354 355 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 356 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 357 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 358 } 359 360 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 361 ((buf[0] ^ buf[3]) & 0x02)) { 362 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 363 default: 364 /* 365 * if nExtBtn is greater than 8 it should be 366 * considered invalid and treated as 0 367 */ 368 break; 369 case 8: 370 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 371 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 372 case 6: 373 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 374 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 375 case 4: 376 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 377 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 378 case 2: 379 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 380 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 381 } 382 } 383 } else { 384 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 385 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 386 387 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 388 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 389 390 hw->left = (buf[0] & 0x01) ? 1 : 0; 391 hw->right = (buf[0] & 0x02) ? 1 : 0; 392 } 393 } 394 395 /* 396 * called for each full received packet from the touchpad 397 */ 398 static void synaptics_process_packet(struct psmouse *psmouse) 399 { 400 struct input_dev *dev = psmouse->dev; 401 struct synaptics_data *priv = psmouse->private; 402 struct synaptics_hw_state hw; 403 int num_fingers; 404 int finger_width; 405 int i; 406 407 synaptics_parse_hw_state(psmouse->packet, priv, &hw); 408 409 if (hw.scroll) { 410 priv->scroll += hw.scroll; 411 412 while (priv->scroll >= 4) { 413 input_report_key(dev, BTN_BACK, !hw.down); 414 input_sync(dev); 415 input_report_key(dev, BTN_BACK, hw.down); 416 input_sync(dev); 417 priv->scroll -= 4; 418 } 419 while (priv->scroll <= -4) { 420 input_report_key(dev, BTN_FORWARD, !hw.up); 421 input_sync(dev); 422 input_report_key(dev, BTN_FORWARD, hw.up); 423 input_sync(dev); 424 priv->scroll += 4; 425 } 426 return; 427 } 428 429 if (hw.z > 0) { 430 num_fingers = 1; 431 finger_width = 5; 432 if (SYN_CAP_EXTENDED(priv->capabilities)) { 433 switch (hw.w) { 434 case 0 ... 1: 435 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 436 num_fingers = hw.w + 2; 437 break; 438 case 2: 439 if (SYN_MODEL_PEN(priv->model_id)) 440 ; /* Nothing, treat a pen as a single finger */ 441 break; 442 case 4 ... 15: 443 if (SYN_CAP_PALMDETECT(priv->capabilities)) 444 finger_width = hw.w; 445 break; 446 } 447 } 448 } else { 449 num_fingers = 0; 450 finger_width = 0; 451 } 452 453 /* Post events 454 * BTN_TOUCH has to be first as mousedev relies on it when doing 455 * absolute -> relative conversion 456 */ 457 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 458 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 459 460 if (hw.z > 0) { 461 input_report_abs(dev, ABS_X, hw.x); 462 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); 463 } 464 input_report_abs(dev, ABS_PRESSURE, hw.z); 465 466 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 467 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 468 input_report_key(dev, BTN_LEFT, hw.left); 469 input_report_key(dev, BTN_RIGHT, hw.right); 470 471 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 472 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 473 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 474 } 475 476 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 477 input_report_key(dev, BTN_MIDDLE, hw.middle); 478 479 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 480 input_report_key(dev, BTN_FORWARD, hw.up); 481 input_report_key(dev, BTN_BACK, hw.down); 482 } 483 484 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 485 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); 486 487 input_sync(dev); 488 } 489 490 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) 491 { 492 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 493 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 494 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 495 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 496 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 497 498 if (idx < 0 || idx > 4) 499 return 0; 500 501 switch (pkt_type) { 502 case SYN_NEWABS: 503 case SYN_NEWABS_RELAXED: 504 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 505 506 case SYN_NEWABS_STRICT: 507 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 508 509 case SYN_OLDABS: 510 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 511 512 default: 513 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); 514 return 0; 515 } 516 } 517 518 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 519 { 520 int i; 521 522 for (i = 0; i < 5; i++) 523 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { 524 printk(KERN_INFO "synaptics: using relaxed packet validation\n"); 525 return SYN_NEWABS_RELAXED; 526 } 527 528 return SYN_NEWABS_STRICT; 529 } 530 531 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 532 { 533 struct synaptics_data *priv = psmouse->private; 534 535 if (psmouse->pktcnt >= 6) { /* Full packet received */ 536 if (unlikely(priv->pkt_type == SYN_NEWABS)) 537 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 538 539 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) { 540 if (psmouse->ps2dev.serio->child) 541 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet); 542 } else 543 synaptics_process_packet(psmouse); 544 545 return PSMOUSE_FULL_PACKET; 546 } 547 548 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? 549 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 550 } 551 552 /***************************************************************************** 553 * Driver initialization/cleanup functions 554 ****************************************************************************/ 555 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 556 { 557 int i; 558 559 __set_bit(EV_ABS, dev->evbit); 560 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0); 561 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0); 562 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 563 __set_bit(ABS_TOOL_WIDTH, dev->absbit); 564 565 __set_bit(EV_KEY, dev->evbit); 566 __set_bit(BTN_TOUCH, dev->keybit); 567 __set_bit(BTN_TOOL_FINGER, dev->keybit); 568 __set_bit(BTN_LEFT, dev->keybit); 569 __set_bit(BTN_RIGHT, dev->keybit); 570 571 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 572 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 573 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 574 } 575 576 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 577 __set_bit(BTN_MIDDLE, dev->keybit); 578 579 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 580 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 581 __set_bit(BTN_FORWARD, dev->keybit); 582 __set_bit(BTN_BACK, dev->keybit); 583 } 584 585 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 586 __set_bit(BTN_0 + i, dev->keybit); 587 588 __clear_bit(EV_REL, dev->evbit); 589 __clear_bit(REL_X, dev->relbit); 590 __clear_bit(REL_Y, dev->relbit); 591 592 dev->absres[ABS_X] = priv->x_res; 593 dev->absres[ABS_Y] = priv->y_res; 594 } 595 596 static void synaptics_disconnect(struct psmouse *psmouse) 597 { 598 synaptics_reset(psmouse); 599 kfree(psmouse->private); 600 psmouse->private = NULL; 601 } 602 603 static int synaptics_reconnect(struct psmouse *psmouse) 604 { 605 struct synaptics_data *priv = psmouse->private; 606 struct synaptics_data old_priv = *priv; 607 608 psmouse_reset(psmouse); 609 610 if (synaptics_detect(psmouse, 0)) 611 return -1; 612 613 if (synaptics_query_hardware(psmouse)) { 614 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 615 return -1; 616 } 617 618 if (old_priv.identity != priv->identity || 619 old_priv.model_id != priv->model_id || 620 old_priv.capabilities != priv->capabilities || 621 old_priv.ext_cap != priv->ext_cap) 622 return -1; 623 624 if (synaptics_set_absolute_mode(psmouse)) { 625 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 626 return -1; 627 } 628 629 return 0; 630 } 631 632 #if defined(__i386__) 633 #include <linux/dmi.h> 634 static const struct dmi_system_id toshiba_dmi_table[] = { 635 { 636 .ident = "Toshiba Satellite", 637 .matches = { 638 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 639 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 640 }, 641 }, 642 { 643 .ident = "Toshiba Dynabook", 644 .matches = { 645 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 646 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 647 }, 648 }, 649 { 650 .ident = "Toshiba Portege M300", 651 .matches = { 652 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 653 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 654 }, 655 }, 656 { } 657 }; 658 #endif 659 660 int synaptics_init(struct psmouse *psmouse) 661 { 662 struct synaptics_data *priv; 663 664 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 665 if (!priv) 666 return -1; 667 668 psmouse_reset(psmouse); 669 670 if (synaptics_query_hardware(psmouse)) { 671 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 672 goto init_fail; 673 } 674 675 if (synaptics_set_absolute_mode(psmouse)) { 676 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 677 goto init_fail; 678 } 679 680 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 681 682 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n", 683 SYN_ID_MODEL(priv->identity), 684 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 685 priv->model_id, priv->capabilities, priv->ext_cap); 686 687 set_input_params(psmouse->dev, priv); 688 689 /* 690 * Encode touchpad model so that it can be used to set 691 * input device->id.version and be visible to userspace. 692 * Because version is __u16 we have to drop something. 693 * Hardware info bits seem to be good candidates as they 694 * are documented to be for Synaptics corp. internal use. 695 */ 696 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 697 (priv->model_id & 0x000000ff); 698 699 psmouse->protocol_handler = synaptics_process_byte; 700 psmouse->set_rate = synaptics_set_rate; 701 psmouse->disconnect = synaptics_disconnect; 702 psmouse->reconnect = synaptics_reconnect; 703 psmouse->cleanup = synaptics_reset; 704 psmouse->pktsize = 6; 705 /* Synaptics can usually stay in sync without extra help */ 706 psmouse->resync_time = 0; 707 708 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 709 synaptics_pt_create(psmouse); 710 711 #if defined(__i386__) 712 /* 713 * Toshiba's KBC seems to have trouble handling data from 714 * Synaptics as full rate, switch to lower rate which is roughly 715 * thye same as rate of standard PS/2 mouse. 716 */ 717 if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) { 718 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", 719 dmi_get_system_info(DMI_PRODUCT_NAME)); 720 psmouse->rate = 40; 721 } 722 #endif 723 724 return 0; 725 726 init_fail: 727 kfree(priv); 728 return -1; 729 } 730 731 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 732 733 int synaptics_init(struct psmouse *psmouse) 734 { 735 return -ENOSYS; 736 } 737 738 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 739 740