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