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 <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 */ 40 #define XMIN_NOMINAL 1472 41 #define XMAX_NOMINAL 5472 42 #define YMIN_NOMINAL 1408 43 #define YMAX_NOMINAL 4448 44 45 46 /***************************************************************************** 47 * Stuff we need even when we do not want native Synaptics support 48 ****************************************************************************/ 49 50 /* 51 * Set the synaptics touchpad mode byte by special commands 52 */ 53 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode) 54 { 55 unsigned char param[1]; 56 57 if (psmouse_sliced_command(psmouse, mode)) 58 return -1; 59 param[0] = SYN_PS_SET_MODE2; 60 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE)) 61 return -1; 62 return 0; 63 } 64 65 int synaptics_detect(struct psmouse *psmouse, bool set_properties) 66 { 67 struct ps2dev *ps2dev = &psmouse->ps2dev; 68 unsigned char param[4]; 69 70 param[0] = 0; 71 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_SETRES); 76 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); 77 78 if (param[1] != 0x47) 79 return -ENODEV; 80 81 if (set_properties) { 82 psmouse->vendor = "Synaptics"; 83 psmouse->name = "TouchPad"; 84 } 85 86 return 0; 87 } 88 89 void synaptics_reset(struct psmouse *psmouse) 90 { 91 /* reset touchpad back to relative mode, gestures enabled */ 92 synaptics_mode_cmd(psmouse, 0); 93 } 94 95 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS 96 97 /***************************************************************************** 98 * Synaptics communications functions 99 ****************************************************************************/ 100 101 /* 102 * Send a command to the synpatics touchpad by special commands 103 */ 104 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param) 105 { 106 if (psmouse_sliced_command(psmouse, c)) 107 return -1; 108 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) 109 return -1; 110 return 0; 111 } 112 113 /* 114 * Read the model-id bytes from the touchpad 115 * see also SYN_MODEL_* macros 116 */ 117 static int synaptics_model_id(struct psmouse *psmouse) 118 { 119 struct synaptics_data *priv = psmouse->private; 120 unsigned char mi[3]; 121 122 if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi)) 123 return -1; 124 priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2]; 125 return 0; 126 } 127 128 /* 129 * Read the capability-bits from the touchpad 130 * see also the SYN_CAP_* macros 131 */ 132 static int synaptics_capability(struct psmouse *psmouse) 133 { 134 struct synaptics_data *priv = psmouse->private; 135 unsigned char cap[3]; 136 137 if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap)) 138 return -1; 139 priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 140 priv->ext_cap = priv->ext_cap_0c = 0; 141 142 if (!SYN_CAP_VALID(priv->capabilities)) 143 return -1; 144 145 /* 146 * Unless capExtended is set the rest of the flags should be ignored 147 */ 148 if (!SYN_CAP_EXTENDED(priv->capabilities)) 149 priv->capabilities = 0; 150 151 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) { 152 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) { 153 printk(KERN_ERR "Synaptics claims to have extended capabilities," 154 " but I'm not able to read them.\n"); 155 } else { 156 priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 157 158 /* 159 * if nExtBtn is greater than 8 it should be considered 160 * invalid and treated as 0 161 */ 162 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8) 163 priv->ext_cap &= 0xff0fff; 164 } 165 } 166 167 if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { 168 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { 169 printk(KERN_ERR "Synaptics claims to have extended capability 0x0c," 170 " but I'm not able to read it.\n"); 171 } else { 172 priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; 173 } 174 } 175 176 return 0; 177 } 178 179 /* 180 * Identify Touchpad 181 * See also the SYN_ID_* macros 182 */ 183 static int synaptics_identify(struct psmouse *psmouse) 184 { 185 struct synaptics_data *priv = psmouse->private; 186 unsigned char id[3]; 187 188 if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id)) 189 return -1; 190 priv->identity = (id[0]<<16) | (id[1]<<8) | id[2]; 191 if (SYN_ID_IS_SYNAPTICS(priv->identity)) 192 return 0; 193 return -1; 194 } 195 196 /* 197 * Read touchpad resolution 198 * Resolution is left zero if touchpad does not support the query 199 */ 200 static int synaptics_resolution(struct psmouse *psmouse) 201 { 202 struct synaptics_data *priv = psmouse->private; 203 unsigned char res[3]; 204 205 if (SYN_ID_MAJOR(priv->identity) < 4) 206 return 0; 207 208 if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res)) 209 return 0; 210 211 if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) { 212 priv->x_res = res[0]; /* x resolution in units/mm */ 213 priv->y_res = res[2]; /* y resolution in units/mm */ 214 } 215 216 return 0; 217 } 218 219 static int synaptics_query_hardware(struct psmouse *psmouse) 220 { 221 if (synaptics_identify(psmouse)) 222 return -1; 223 if (synaptics_model_id(psmouse)) 224 return -1; 225 if (synaptics_capability(psmouse)) 226 return -1; 227 if (synaptics_resolution(psmouse)) 228 return -1; 229 230 return 0; 231 } 232 233 static int synaptics_set_absolute_mode(struct psmouse *psmouse) 234 { 235 struct synaptics_data *priv = psmouse->private; 236 237 priv->mode = SYN_BIT_ABSOLUTE_MODE; 238 if (SYN_ID_MAJOR(priv->identity) >= 4) 239 priv->mode |= SYN_BIT_DISABLE_GESTURE; 240 if (SYN_CAP_EXTENDED(priv->capabilities)) 241 priv->mode |= SYN_BIT_W_MODE; 242 243 if (synaptics_mode_cmd(psmouse, priv->mode)) 244 return -1; 245 246 return 0; 247 } 248 249 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) 250 { 251 struct synaptics_data *priv = psmouse->private; 252 253 if (rate >= 80) { 254 priv->mode |= SYN_BIT_HIGH_RATE; 255 psmouse->rate = 80; 256 } else { 257 priv->mode &= ~SYN_BIT_HIGH_RATE; 258 psmouse->rate = 40; 259 } 260 261 synaptics_mode_cmd(psmouse, priv->mode); 262 } 263 264 /***************************************************************************** 265 * Synaptics pass-through PS/2 port support 266 ****************************************************************************/ 267 static int synaptics_pt_write(struct serio *serio, unsigned char c) 268 { 269 struct psmouse *parent = serio_get_drvdata(serio->parent); 270 char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ 271 272 if (psmouse_sliced_command(parent, c)) 273 return -1; 274 if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE)) 275 return -1; 276 return 0; 277 } 278 279 static inline int synaptics_is_pt_packet(unsigned char *buf) 280 { 281 return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; 282 } 283 284 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet) 285 { 286 struct psmouse *child = serio_get_drvdata(ptport); 287 288 if (child && child->state == PSMOUSE_ACTIVATED) { 289 serio_interrupt(ptport, packet[1], 0); 290 serio_interrupt(ptport, packet[4], 0); 291 serio_interrupt(ptport, packet[5], 0); 292 if (child->pktsize == 4) 293 serio_interrupt(ptport, packet[2], 0); 294 } else 295 serio_interrupt(ptport, packet[1], 0); 296 } 297 298 static void synaptics_pt_activate(struct psmouse *psmouse) 299 { 300 struct serio *ptport = psmouse->ps2dev.serio->child; 301 struct psmouse *child = serio_get_drvdata(ptport); 302 struct synaptics_data *priv = psmouse->private; 303 304 /* adjust the touchpad to child's choice of protocol */ 305 if (child) { 306 if (child->pktsize == 4) 307 priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; 308 else 309 priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; 310 311 if (synaptics_mode_cmd(psmouse, priv->mode)) 312 printk(KERN_INFO "synaptics: failed to switch guest protocol\n"); 313 } 314 } 315 316 static void synaptics_pt_create(struct psmouse *psmouse) 317 { 318 struct serio *serio; 319 320 serio = kzalloc(sizeof(struct serio), GFP_KERNEL); 321 if (!serio) { 322 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n"); 323 return; 324 } 325 326 serio->id.type = SERIO_PS_PSTHRU; 327 strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); 328 strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); 329 serio->write = synaptics_pt_write; 330 serio->parent = psmouse->ps2dev.serio; 331 332 psmouse->pt_activate = synaptics_pt_activate; 333 334 printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys); 335 serio_register_port(serio); 336 } 337 338 /***************************************************************************** 339 * Functions to interpret the absolute mode packets 340 ****************************************************************************/ 341 342 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) 343 { 344 memset(hw, 0, sizeof(struct synaptics_hw_state)); 345 346 if (SYN_MODEL_NEWABS(priv->model_id)) { 347 hw->x = (((buf[3] & 0x10) << 8) | 348 ((buf[1] & 0x0f) << 8) | 349 buf[4]); 350 hw->y = (((buf[3] & 0x20) << 7) | 351 ((buf[1] & 0xf0) << 4) | 352 buf[5]); 353 354 hw->z = buf[2]; 355 hw->w = (((buf[0] & 0x30) >> 2) | 356 ((buf[0] & 0x04) >> 1) | 357 ((buf[3] & 0x04) >> 2)); 358 359 hw->left = (buf[0] & 0x01) ? 1 : 0; 360 hw->right = (buf[0] & 0x02) ? 1 : 0; 361 362 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 363 /* 364 * Clickpad's button is transmitted as middle button, 365 * however, since it is primary button, we will report 366 * it as BTN_LEFT. 367 */ 368 hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 369 370 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 371 hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 372 if (hw->w == 2) 373 hw->scroll = (signed char)(buf[1]); 374 } 375 376 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 377 hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; 378 hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; 379 } 380 381 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) && 382 ((buf[0] ^ buf[3]) & 0x02)) { 383 switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) { 384 default: 385 /* 386 * if nExtBtn is greater than 8 it should be 387 * considered invalid and treated as 0 388 */ 389 break; 390 case 8: 391 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0; 392 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0; 393 case 6: 394 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0; 395 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0; 396 case 4: 397 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0; 398 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0; 399 case 2: 400 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0; 401 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0; 402 } 403 } 404 } else { 405 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); 406 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]); 407 408 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); 409 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1)); 410 411 hw->left = (buf[0] & 0x01) ? 1 : 0; 412 hw->right = (buf[0] & 0x02) ? 1 : 0; 413 } 414 } 415 416 /* 417 * called for each full received packet from the touchpad 418 */ 419 static void synaptics_process_packet(struct psmouse *psmouse) 420 { 421 struct input_dev *dev = psmouse->dev; 422 struct synaptics_data *priv = psmouse->private; 423 struct synaptics_hw_state hw; 424 int num_fingers; 425 int finger_width; 426 int i; 427 428 synaptics_parse_hw_state(psmouse->packet, priv, &hw); 429 430 if (hw.scroll) { 431 priv->scroll += hw.scroll; 432 433 while (priv->scroll >= 4) { 434 input_report_key(dev, BTN_BACK, !hw.down); 435 input_sync(dev); 436 input_report_key(dev, BTN_BACK, hw.down); 437 input_sync(dev); 438 priv->scroll -= 4; 439 } 440 while (priv->scroll <= -4) { 441 input_report_key(dev, BTN_FORWARD, !hw.up); 442 input_sync(dev); 443 input_report_key(dev, BTN_FORWARD, hw.up); 444 input_sync(dev); 445 priv->scroll += 4; 446 } 447 return; 448 } 449 450 if (hw.z > 0) { 451 num_fingers = 1; 452 finger_width = 5; 453 if (SYN_CAP_EXTENDED(priv->capabilities)) { 454 switch (hw.w) { 455 case 0 ... 1: 456 if (SYN_CAP_MULTIFINGER(priv->capabilities)) 457 num_fingers = hw.w + 2; 458 break; 459 case 2: 460 if (SYN_MODEL_PEN(priv->model_id)) 461 ; /* Nothing, treat a pen as a single finger */ 462 break; 463 case 4 ... 15: 464 if (SYN_CAP_PALMDETECT(priv->capabilities)) 465 finger_width = hw.w; 466 break; 467 } 468 } 469 } else { 470 num_fingers = 0; 471 finger_width = 0; 472 } 473 474 /* Post events 475 * BTN_TOUCH has to be first as mousedev relies on it when doing 476 * absolute -> relative conversion 477 */ 478 if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); 479 if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0); 480 481 if (hw.z > 0) { 482 input_report_abs(dev, ABS_X, hw.x); 483 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y); 484 } 485 input_report_abs(dev, ABS_PRESSURE, hw.z); 486 487 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); 488 input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); 489 input_report_key(dev, BTN_LEFT, hw.left); 490 input_report_key(dev, BTN_RIGHT, hw.right); 491 492 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 493 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); 494 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); 495 } 496 497 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 498 input_report_key(dev, BTN_MIDDLE, hw.middle); 499 500 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) { 501 input_report_key(dev, BTN_FORWARD, hw.up); 502 input_report_key(dev, BTN_BACK, hw.down); 503 } 504 505 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 506 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i)); 507 508 input_sync(dev); 509 } 510 511 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type) 512 { 513 static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; 514 static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; 515 static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; 516 static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; 517 static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; 518 519 if (idx < 0 || idx > 4) 520 return 0; 521 522 switch (pkt_type) { 523 case SYN_NEWABS: 524 case SYN_NEWABS_RELAXED: 525 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; 526 527 case SYN_NEWABS_STRICT: 528 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; 529 530 case SYN_OLDABS: 531 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; 532 533 default: 534 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type); 535 return 0; 536 } 537 } 538 539 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse) 540 { 541 int i; 542 543 for (i = 0; i < 5; i++) 544 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) { 545 printk(KERN_INFO "synaptics: using relaxed packet validation\n"); 546 return SYN_NEWABS_RELAXED; 547 } 548 549 return SYN_NEWABS_STRICT; 550 } 551 552 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) 553 { 554 struct synaptics_data *priv = psmouse->private; 555 556 if (psmouse->pktcnt >= 6) { /* Full packet received */ 557 if (unlikely(priv->pkt_type == SYN_NEWABS)) 558 priv->pkt_type = synaptics_detect_pkt_type(psmouse); 559 560 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) { 561 if (psmouse->ps2dev.serio->child) 562 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet); 563 } else 564 synaptics_process_packet(psmouse); 565 566 return PSMOUSE_FULL_PACKET; 567 } 568 569 return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ? 570 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 571 } 572 573 /***************************************************************************** 574 * Driver initialization/cleanup functions 575 ****************************************************************************/ 576 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) 577 { 578 int i; 579 580 __set_bit(EV_ABS, dev->evbit); 581 input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0); 582 input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0); 583 input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); 584 __set_bit(ABS_TOOL_WIDTH, dev->absbit); 585 586 __set_bit(EV_KEY, dev->evbit); 587 __set_bit(BTN_TOUCH, dev->keybit); 588 __set_bit(BTN_TOOL_FINGER, dev->keybit); 589 __set_bit(BTN_LEFT, dev->keybit); 590 __set_bit(BTN_RIGHT, dev->keybit); 591 592 if (SYN_CAP_MULTIFINGER(priv->capabilities)) { 593 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); 594 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); 595 } 596 597 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) 598 __set_bit(BTN_MIDDLE, dev->keybit); 599 600 if (SYN_CAP_FOUR_BUTTON(priv->capabilities) || 601 SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) { 602 __set_bit(BTN_FORWARD, dev->keybit); 603 __set_bit(BTN_BACK, dev->keybit); 604 } 605 606 for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++) 607 __set_bit(BTN_0 + i, dev->keybit); 608 609 __clear_bit(EV_REL, dev->evbit); 610 __clear_bit(REL_X, dev->relbit); 611 __clear_bit(REL_Y, dev->relbit); 612 613 dev->absres[ABS_X] = priv->x_res; 614 dev->absres[ABS_Y] = priv->y_res; 615 616 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { 617 /* Clickpads report only left button */ 618 __clear_bit(BTN_RIGHT, dev->keybit); 619 __clear_bit(BTN_MIDDLE, dev->keybit); 620 } 621 } 622 623 static void synaptics_disconnect(struct psmouse *psmouse) 624 { 625 synaptics_reset(psmouse); 626 kfree(psmouse->private); 627 psmouse->private = NULL; 628 } 629 630 static int synaptics_reconnect(struct psmouse *psmouse) 631 { 632 struct synaptics_data *priv = psmouse->private; 633 struct synaptics_data old_priv = *priv; 634 635 psmouse_reset(psmouse); 636 637 if (synaptics_detect(psmouse, 0)) 638 return -1; 639 640 if (synaptics_query_hardware(psmouse)) { 641 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 642 return -1; 643 } 644 645 if (old_priv.identity != priv->identity || 646 old_priv.model_id != priv->model_id || 647 old_priv.capabilities != priv->capabilities || 648 old_priv.ext_cap != priv->ext_cap) 649 return -1; 650 651 if (synaptics_set_absolute_mode(psmouse)) { 652 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 653 return -1; 654 } 655 656 return 0; 657 } 658 659 static bool impaired_toshiba_kbc; 660 661 static const struct dmi_system_id __initconst toshiba_dmi_table[] = { 662 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 663 { 664 /* Toshiba Satellite */ 665 .matches = { 666 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 667 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), 668 }, 669 }, 670 { 671 /* Toshiba Dynabook */ 672 .matches = { 673 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 674 DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), 675 }, 676 }, 677 { 678 /* Toshiba Portege M300 */ 679 .matches = { 680 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 681 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), 682 }, 683 684 }, 685 { 686 /* Toshiba Portege M300 */ 687 .matches = { 688 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 689 DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), 690 DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), 691 }, 692 693 }, 694 { } 695 #endif 696 }; 697 698 void __init synaptics_module_init(void) 699 { 700 impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); 701 } 702 703 int synaptics_init(struct psmouse *psmouse) 704 { 705 struct synaptics_data *priv; 706 707 psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); 708 if (!priv) 709 return -1; 710 711 psmouse_reset(psmouse); 712 713 if (synaptics_query_hardware(psmouse)) { 714 printk(KERN_ERR "Unable to query Synaptics hardware.\n"); 715 goto init_fail; 716 } 717 718 if (synaptics_set_absolute_mode(psmouse)) { 719 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n"); 720 goto init_fail; 721 } 722 723 priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; 724 725 printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n", 726 SYN_ID_MODEL(priv->identity), 727 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), 728 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c); 729 730 set_input_params(psmouse->dev, priv); 731 732 /* 733 * Encode touchpad model so that it can be used to set 734 * input device->id.version and be visible to userspace. 735 * Because version is __u16 we have to drop something. 736 * Hardware info bits seem to be good candidates as they 737 * are documented to be for Synaptics corp. internal use. 738 */ 739 psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | 740 (priv->model_id & 0x000000ff); 741 742 psmouse->protocol_handler = synaptics_process_byte; 743 psmouse->set_rate = synaptics_set_rate; 744 psmouse->disconnect = synaptics_disconnect; 745 psmouse->reconnect = synaptics_reconnect; 746 psmouse->cleanup = synaptics_reset; 747 psmouse->pktsize = 6; 748 /* Synaptics can usually stay in sync without extra help */ 749 psmouse->resync_time = 0; 750 751 if (SYN_CAP_PASS_THROUGH(priv->capabilities)) 752 synaptics_pt_create(psmouse); 753 754 /* 755 * Toshiba's KBC seems to have trouble handling data from 756 * Synaptics as full rate, switch to lower rate which is roughly 757 * thye same as rate of standard PS/2 mouse. 758 */ 759 if (psmouse->rate >= 80 && impaired_toshiba_kbc) { 760 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n", 761 dmi_get_system_info(DMI_PRODUCT_NAME)); 762 psmouse->rate = 40; 763 } 764 765 return 0; 766 767 init_fail: 768 kfree(priv); 769 return -1; 770 } 771 772 bool synaptics_supported(void) 773 { 774 return true; 775 } 776 777 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ 778 779 void __init synaptics_module_init(void) 780 { 781 } 782 783 int synaptics_init(struct psmouse *psmouse) 784 { 785 return -ENOSYS; 786 } 787 788 bool synaptics_supported(void) 789 { 790 return false; 791 } 792 793 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ 794 795