git.oblomov.eu Git - linux-2.6/blob - 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/input.h>
  28 #include <linux/serio.h>
  29 #include <linux/libps2.h>
  30 #include "psmouse.h"
  31 #include "synaptics.h"
  32
  33 /*
  34  * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
  35  * section 2.3.2, which says that they should be valid regardless of the
  36  * actual size of the sensor.
  37  */
  38 #define XMIN_NOMINAL 1472
  39 #define XMAX_NOMINAL 5472
  40 #define YMIN_NOMINAL 1408
  41 #define YMAX_NOMINAL 4448
  42
  43
  44 /*****************************************************************************
  45  *      Stuff we need even when we do not want native Synaptics support
  46  ****************************************************************************/
  47
  48 /*
  49  * Set the synaptics touchpad mode byte by special commands
  50  */
  51 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
  52 {
  53         unsigned char param[1];
  54
  55         if (psmouse_sliced_command(psmouse, mode))
  56                 return -1;
  57         param[0] = SYN_PS_SET_MODE2;
  58         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
  59                 return -1;
  60         return 0;
  61 }
  62
  63 int synaptics_detect(struct psmouse *psmouse, int set_properties)
  64 {
  65         struct ps2dev *ps2dev = &psmouse->ps2dev;
  66         unsigned char param[4];
  67
  68         param[0] = 0;
  69
  70         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  71         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  72         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  73         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  74         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
  75
  76         if (param[1] != 0x47)
  77                 return -ENODEV;
  78
  79         if (set_properties) {
  80                 psmouse->vendor = "Synaptics";
  81                 psmouse->name = "TouchPad";
  82         }
  83
  84         return 0;
  85 }
  86
  87 void synaptics_reset(struct psmouse *psmouse)
  88 {
  89         /* reset touchpad back to relative mode, gestures enabled */
  90         synaptics_mode_cmd(psmouse, 0);
  91 }
  92
  93 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
  94
  95 /*****************************************************************************
  96  *      Synaptics communications functions
  97  ****************************************************************************/
  98
  99 /*
 100  * Send a command to the synpatics touchpad by special commands
 101  */
 102 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
 103 {
 104         if (psmouse_sliced_command(psmouse, c))
 105                 return -1;
 106         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
 107                 return -1;
 108         return 0;
 109 }
 110
 111 /*
 112  * Read the model-id bytes from the touchpad
 113  * see also SYN_MODEL_* macros
 114  */
 115 static int synaptics_model_id(struct psmouse *psmouse)
 116 {
 117         struct synaptics_data *priv = psmouse->private;
 118         unsigned char mi[3];
 119
 120         if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
 121                 return -1;
 122         priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
 123         return 0;
 124 }
 125
 126 /*
 127  * Read the capability-bits from the touchpad
 128  * see also the SYN_CAP_* macros
 129  */
 130 static int synaptics_capability(struct psmouse *psmouse)
 131 {
 132         struct synaptics_data *priv = psmouse->private;
 133         unsigned char cap[3];
 134
 135         if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
 136                 return -1;
 137         priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 138         priv->ext_cap = 0;
 139         if (!SYN_CAP_VALID(priv->capabilities))
 140                 return -1;
 141
 142         /*
 143          * Unless capExtended is set the rest of the flags should be ignored
 144          */
 145         if (!SYN_CAP_EXTENDED(priv->capabilities))
 146                 priv->capabilities = 0;
 147
 148         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
 149                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
 150                         printk(KERN_ERR "Synaptics claims to have extended capabilities,"
 151                                " but I'm not able to read them.");
 152                 } else {
 153                         priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 154
 155                         /*
 156                          * if nExtBtn is greater than 8 it should be considered
 157                          * invalid and treated as 0
 158                          */
 159                         if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
 160                                 priv->ext_cap &= 0xff0fff;
 161                 }
 162         }
 163         return 0;
 164 }
 165
 166 /*
 167  * Identify Touchpad
 168  * See also the SYN_ID_* macros
 169  */
 170 static int synaptics_identify(struct psmouse *psmouse)
 171 {
 172         struct synaptics_data *priv = psmouse->private;
 173         unsigned char id[3];
 174
 175         if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
 176                 return -1;
 177         priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
 178         if (SYN_ID_IS_SYNAPTICS(priv->identity))
 179                 return 0;
 180         return -1;
 181 }
 182
 183 /*
 184  * Read touchpad resolution
 185  * Resolution is left zero if touchpad does not support the query
 186  */
 187 static int synaptics_resolution(struct psmouse *psmouse)
 188 {
 189         struct synaptics_data *priv = psmouse->private;
 190         unsigned char res[3];
 191
 192         if (SYN_ID_MAJOR(priv->identity) < 4)
 193                 return 0;
 194
 195         if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res))
 196                 return 0;
 197
 198         if ((res[0] != 0) && (res[1] & 0x80) && (res[2] != 0)) {
 199                 priv->x_res = res[0]; /* x resolution in units/mm */
 200                 priv->y_res = res[2]; /* y resolution in units/mm */
 201         }
 202
 203         return 0;
 204 }
 205
 206 static int synaptics_query_hardware(struct psmouse *psmouse)
 207 {
 208         if (synaptics_identify(psmouse))
 209                 return -1;
 210         if (synaptics_model_id(psmouse))
 211                 return -1;
 212         if (synaptics_capability(psmouse))
 213                 return -1;
 214         if (synaptics_resolution(psmouse))
 215                 return -1;
 216
 217         return 0;
 218 }
 219
 220 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
 221 {
 222         struct synaptics_data *priv = psmouse->private;
 223
 224         priv->mode = SYN_BIT_ABSOLUTE_MODE;
 225         if (SYN_ID_MAJOR(priv->identity) >= 4)
 226                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
 227         if (SYN_CAP_EXTENDED(priv->capabilities))
 228                 priv->mode |= SYN_BIT_W_MODE;
 229
 230         if (synaptics_mode_cmd(psmouse, priv->mode))
 231                 return -1;
 232
 233         return 0;
 234 }
 235
 236 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
 237 {
 238         struct synaptics_data *priv = psmouse->private;
 239
 240         if (rate >= 80) {
 241                 priv->mode |= SYN_BIT_HIGH_RATE;
 242                 psmouse->rate = 80;
 243         } else {
 244                 priv->mode &= ~SYN_BIT_HIGH_RATE;
 245                 psmouse->rate = 40;
 246         }
 247
 248         synaptics_mode_cmd(psmouse, priv->mode);
 249 }
 250
 251 /*****************************************************************************
 252  *      Synaptics pass-through PS/2 port support
 253  ****************************************************************************/
 254 static int synaptics_pt_write(struct serio *serio, unsigned char c)
 255 {
 256         struct psmouse *parent = serio_get_drvdata(serio->parent);
 257         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
 258
 259         if (psmouse_sliced_command(parent, c))
 260                 return -1;
 261         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
 262                 return -1;
 263         return 0;
 264 }
 265
 266 static inline int synaptics_is_pt_packet(unsigned char *buf)
 267 {
 268         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 269 }
 270
 271 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
 272 {
 273         struct psmouse *child = serio_get_drvdata(ptport);
 274
 275         if (child && child->state == PSMOUSE_ACTIVATED) {
 276                 serio_interrupt(ptport, packet[1], 0);
 277                 serio_interrupt(ptport, packet[4], 0);
 278                 serio_interrupt(ptport, packet[5], 0);
 279                 if (child->pktsize == 4)
 280                         serio_interrupt(ptport, packet[2], 0);
 281         } else
 282                 serio_interrupt(ptport, packet[1], 0);
 283 }
 284
 285 static void synaptics_pt_activate(struct psmouse *psmouse)
 286 {
 287         struct serio *ptport = psmouse->ps2dev.serio->child;
 288         struct psmouse *child = serio_get_drvdata(ptport);
 289         struct synaptics_data *priv = psmouse->private;
 290
 291         /* adjust the touchpad to child's choice of protocol */
 292         if (child) {
 293                 if (child->pktsize == 4)
 294                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
 295                 else
 296                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
 297
 298                 if (synaptics_mode_cmd(psmouse, priv->mode))
 299                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
 300         }
 301 }
 302
 303 static void synaptics_pt_create(struct psmouse *psmouse)
 304 {
 305         struct serio *serio;
 306
 307         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 308         if (!serio) {
 309                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
 310                 return;
 311         }
 312
 313         serio->id.type = SERIO_PS_PSTHRU;
 314         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 315         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 316         serio->write = synaptics_pt_write;
 317         serio->parent = psmouse->ps2dev.serio;
 318
 319         psmouse->pt_activate = synaptics_pt_activate;
 320
 321         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
 322         serio_register_port(serio);
 323 }
 324
 325 /*****************************************************************************
 326  *      Functions to interpret the absolute mode packets
 327  ****************************************************************************/
 328
 329 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
 330 {
 331         memset(hw, 0, sizeof(struct synaptics_hw_state));
 332
 333         if (SYN_MODEL_NEWABS(priv->model_id)) {
 334                 hw->x = (((buf[3] & 0x10) << 8) |
 335                          ((buf[1] & 0x0f) << 8) |
 336                          buf[4]);
 337                 hw->y = (((buf[3] & 0x20) << 7) |
 338                          ((buf[1] & 0xf0) << 4) |
 339                          buf[5]);
 340
 341                 hw->z = buf[2];
 342                 hw->w = (((buf[0] & 0x30) >> 2) |
 343                          ((buf[0] & 0x04) >> 1) |
 344                          ((buf[3] & 0x04) >> 2));
 345
 346                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 347                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 348
 349                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 350                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 351                         if (hw->w == 2)
 352                                 hw->scroll = (signed char)(buf[1]);
 353                 }
 354
 355                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 356                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 357                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 358                 }
 359
 360                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
 361                     ((buf[0] ^ buf[3]) & 0x02)) {
 362                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
 363                         default:
 364                                 /*
 365                                  * if nExtBtn is greater than 8 it should be
 366                                  * considered invalid and treated as 0
 367                                  */
 368                                 break;
 369                         case 8:
 370                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
 371                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
 372                         case 6:
 373                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
 374                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
 375                         case 4:
 376                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
 377                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
 378                         case 2:
 379                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
 380                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
 381                         }
 382                 }
 383         } else {
 384                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
 385                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
 386
 387                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
 388                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
 389
 390                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 391                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 392         }
 393 }
 394
 395 /*
 396  *  called for each full received packet from the touchpad
 397  */
 398 static void synaptics_process_packet(struct psmouse *psmouse)
 399 {
 400         struct input_dev *dev = psmouse->dev;
 401         struct synaptics_data *priv = psmouse->private;
 402         struct synaptics_hw_state hw;
 403         int num_fingers;
 404         int finger_width;
 405         int i;
 406
 407         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
 408
 409         if (hw.scroll) {
 410                 priv->scroll += hw.scroll;
 411
 412                 while (priv->scroll >= 4) {
 413                         input_report_key(dev, BTN_BACK, !hw.down);
 414                         input_sync(dev);
 415                         input_report_key(dev, BTN_BACK, hw.down);
 416                         input_sync(dev);
 417                         priv->scroll -= 4;
 418                 }
 419                 while (priv->scroll <= -4) {
 420                         input_report_key(dev, BTN_FORWARD, !hw.up);
 421                         input_sync(dev);
 422                         input_report_key(dev, BTN_FORWARD, hw.up);
 423                         input_sync(dev);
 424                         priv->scroll += 4;
 425                 }
 426                 return;
 427         }
 428
 429         if (hw.z > 0) {
 430                 num_fingers = 1;
 431                 finger_width = 5;
 432                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
 433                         switch (hw.w) {
 434                         case 0 ... 1:
 435                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 436                                         num_fingers = hw.w + 2;
 437                                 break;
 438                         case 2:
 439                                 if (SYN_MODEL_PEN(priv->model_id))
 440                                         ;   /* Nothing, treat a pen as a single finger */
 441                                 break;
 442                         case 4 ... 15:
 443                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 444                                         finger_width = hw.w;
 445                                 break;
 446                         }
 447                 }
 448         } else {
 449                 num_fingers = 0;
 450                 finger_width = 0;
 451         }
 452
 453         /* Post events
 454          * BTN_TOUCH has to be first as mousedev relies on it when doing
 455          * absolute -> relative conversion
 456          */
 457         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
 458         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
 459
 460         if (hw.z > 0) {
 461                 input_report_abs(dev, ABS_X, hw.x);
 462                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
 463         }
 464         input_report_abs(dev, ABS_PRESSURE, hw.z);
 465
 466         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
 467         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
 468         input_report_key(dev, BTN_LEFT, hw.left);
 469         input_report_key(dev, BTN_RIGHT, hw.right);
 470
 471         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 472                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
 473                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
 474         }
 475
 476         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 477                 input_report_key(dev, BTN_MIDDLE, hw.middle);
 478
 479         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 480                 input_report_key(dev, BTN_FORWARD, hw.up);
 481                 input_report_key(dev, BTN_BACK, hw.down);
 482         }
 483
 484         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 485                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
 486
 487         input_sync(dev);
 488 }
 489
 490 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
 491 {
 492         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
 493         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
 494         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
 495         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
 496         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
 497
 498         if (idx < 0 || idx > 4)
 499                 return 0;
 500
 501         switch (pkt_type) {
 502                 case SYN_NEWABS:
 503                 case SYN_NEWABS_RELAXED:
 504                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
 505
 506                 case SYN_NEWABS_STRICT:
 507                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
 508
 509                 case SYN_OLDABS:
 510                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
 511
 512                 default:
 513                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
 514                         return 0;
 515         }
 516 }
 517
 518 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
 519 {
 520         int i;
 521
 522         for (i = 0; i < 5; i++)
 523                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
 524                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
 525                         return SYN_NEWABS_RELAXED;
 526                 }
 527
 528         return SYN_NEWABS_STRICT;
 529 }
 530
 531 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 532 {
 533         struct synaptics_data *priv = psmouse->private;
 534
 535         if (psmouse->pktcnt >= 6) { /* Full packet received */
 536                 if (unlikely(priv->pkt_type == SYN_NEWABS))
 537                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 538
 539                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
 540                         if (psmouse->ps2dev.serio->child)
 541                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
 542                 } else
 543                         synaptics_process_packet(psmouse);
 544
 545                 return PSMOUSE_FULL_PACKET;
 546         }
 547
 548         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
 549                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 550 }
 551
 552 /*****************************************************************************
 553  *      Driver initialization/cleanup functions
 554  ****************************************************************************/
 555 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 556 {
 557         int i;
 558
 559         set_bit(EV_ABS, dev->evbit);
 560         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
 561         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
 562         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
 563         set_bit(ABS_TOOL_WIDTH, dev->absbit);
 564
 565         set_bit(EV_KEY, dev->evbit);
 566         set_bit(BTN_TOUCH, dev->keybit);
 567         set_bit(BTN_TOOL_FINGER, dev->keybit);
 568         set_bit(BTN_LEFT, dev->keybit);
 569         set_bit(BTN_RIGHT, dev->keybit);
 570
 571         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 572                 set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
 573                 set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
 574         }
 575
 576         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 577                 set_bit(BTN_MIDDLE, dev->keybit);
 578
 579         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
 580             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 581                 set_bit(BTN_FORWARD, dev->keybit);
 582                 set_bit(BTN_BACK, dev->keybit);
 583         }
 584
 585         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 586                 set_bit(BTN_0 + i, dev->keybit);
 587
 588         clear_bit(EV_REL, dev->evbit);
 589         clear_bit(REL_X, dev->relbit);
 590         clear_bit(REL_Y, dev->relbit);
 591
 592         dev->absres[ABS_X] = priv->x_res;
 593         dev->absres[ABS_Y] = priv->y_res;
 594 }
 595
 596 static void synaptics_disconnect(struct psmouse *psmouse)
 597 {
 598         synaptics_reset(psmouse);
 599         kfree(psmouse->private);
 600         psmouse->private = NULL;
 601 }
 602
 603 static int synaptics_reconnect(struct psmouse *psmouse)
 604 {
 605         struct synaptics_data *priv = psmouse->private;
 606         struct synaptics_data old_priv = *priv;
 607
 608         psmouse_reset(psmouse);
 609
 610         if (synaptics_detect(psmouse, 0))
 611                 return -1;
 612
 613         if (synaptics_query_hardware(psmouse)) {
 614                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 615                 return -1;
 616         }
 617
 618         if (old_priv.identity != priv->identity ||
 619             old_priv.model_id != priv->model_id ||
 620             old_priv.capabilities != priv->capabilities ||
 621             old_priv.ext_cap != priv->ext_cap)
 622                 return -1;
 623
 624         if (synaptics_set_absolute_mode(psmouse)) {
 625                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 626                 return -1;
 627         }
 628
 629         return 0;
 630 }
 631
 632 #if defined(__i386__)
 633 #include <linux/dmi.h>
 634 static const struct dmi_system_id toshiba_dmi_table[] = {
 635         {
 636                 .ident = "Toshiba Satellite",
 637                 .matches = {
 638                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 639                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
 640                 },
 641         },
 642         {
 643                 .ident = "Toshiba Dynabook",
 644                 .matches = {
 645                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 646                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
 647                 },
 648         },
 649         {
 650                 .ident = "Toshiba Portege M300",
 651                 .matches = {
 652                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 653                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
 654                 },
 655         },
 656         { }
 657 };
 658 #endif
 659
 660 int synaptics_init(struct psmouse *psmouse)
 661 {
 662         struct synaptics_data *priv;
 663
 664         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 665         if (!priv)
 666                 return -1;
 667
 668         psmouse_reset(psmouse);
 669
 670         if (synaptics_query_hardware(psmouse)) {
 671                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 672                 goto init_fail;
 673         }
 674
 675         if (synaptics_set_absolute_mode(psmouse)) {
 676                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 677                 goto init_fail;
 678         }
 679
 680         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
 681
 682         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx\n",
 683                 SYN_ID_MODEL(priv->identity),
 684                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
 685                 priv->model_id, priv->capabilities, priv->ext_cap);
 686
 687         set_input_params(psmouse->dev, priv);
 688
 689         /*
 690          * Encode touchpad model so that it can be used to set
 691          * input device->id.version and be visible to userspace.
 692          * Because version is __u16 we have to drop something.
 693          * Hardware info bits seem to be good candidates as they
 694          * are documented to be for Synaptics corp. internal use.
 695          */
 696         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
 697                           (priv->model_id & 0x000000ff);
 698
 699         psmouse->protocol_handler = synaptics_process_byte;
 700         psmouse->set_rate = synaptics_set_rate;
 701         psmouse->disconnect = synaptics_disconnect;
 702         psmouse->reconnect = synaptics_reconnect;
 703         psmouse->cleanup = synaptics_reset;
 704         psmouse->pktsize = 6;
 705         /* Synaptics can usually stay in sync without extra help */
 706         psmouse->resync_time = 0;
 707
 708         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 709                 synaptics_pt_create(psmouse);
 710
 711 #if defined(__i386__)
 712         /*
 713          * Toshiba's KBC seems to have trouble handling data from
 714          * Synaptics as full rate, switch to lower rate which is roughly
 715          * thye same as rate of standard PS/2 mouse.
 716          */
 717         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
 718                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
 719                         dmi_get_system_info(DMI_PRODUCT_NAME));
 720                 psmouse->rate = 40;
 721         }
 722 #endif
 723
 724         return 0;
 725
 726  init_fail:
 727         kfree(priv);
 728         return -1;
 729 }
 730
 731 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
 732
 733 int synaptics_init(struct psmouse *psmouse)
 734 {
 735         return -ENOSYS;
 736 }
 737
 738 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
 739