drivers/input/mouse/synaptics.c

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