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