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  *      Synaptics communications functions
  45  ****************************************************************************/
  46
  47 /*
  48  * Send a command to the synpatics touchpad by special commands
  49  */
  50 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
  51 {
  52         if (psmouse_sliced_command(psmouse, c))
  53                 return -1;
  54         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
  55                 return -1;
  56         return 0;
  57 }
  58
  59 /*
  60  * Set the synaptics touchpad mode byte by special commands
  61  */
  62 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
  63 {
  64         unsigned char param[1];
  65
  66         if (psmouse_sliced_command(psmouse, mode))
  67                 return -1;
  68         param[0] = SYN_PS_SET_MODE2;
  69         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
  70                 return -1;
  71         return 0;
  72 }
  73
  74 /*
  75  * Read the model-id bytes from the touchpad
  76  * see also SYN_MODEL_* macros
  77  */
  78 static int synaptics_model_id(struct psmouse *psmouse)
  79 {
  80         struct synaptics_data *priv = psmouse->private;
  81         unsigned char mi[3];
  82
  83         if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
  84                 return -1;
  85         priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
  86         return 0;
  87 }
  88
  89 /*
  90  * Read the capability-bits from the touchpad
  91  * see also the SYN_CAP_* macros
  92  */
  93 static int synaptics_capability(struct psmouse *psmouse)
  94 {
  95         struct synaptics_data *priv = psmouse->private;
  96         unsigned char cap[3];
  97
  98         if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
  99                 return -1;
 100         priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 101         priv->ext_cap = 0;
 102         if (!SYN_CAP_VALID(priv->capabilities))
 103                 return -1;
 104
 105         /*
 106          * Unless capExtended is set the rest of the flags should be ignored
 107          */
 108         if (!SYN_CAP_EXTENDED(priv->capabilities))
 109                 priv->capabilities = 0;
 110
 111         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
 112                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
 113                         printk(KERN_ERR "Synaptics claims to have extended capabilities,"
 114                                " but I'm not able to read them.");
 115                 } else {
 116                         priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 117
 118                         /*
 119                          * if nExtBtn is greater than 8 it should be considered
 120                          * invalid and treated as 0
 121                          */
 122                         if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
 123                                 priv->ext_cap &= 0xff0fff;
 124                 }
 125         }
 126         return 0;
 127 }
 128
 129 /*
 130  * Identify Touchpad
 131  * See also the SYN_ID_* macros
 132  */
 133 static int synaptics_identify(struct psmouse *psmouse)
 134 {
 135         struct synaptics_data *priv = psmouse->private;
 136         unsigned char id[3];
 137
 138         if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
 139                 return -1;
 140         priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
 141         if (SYN_ID_IS_SYNAPTICS(priv->identity))
 142                 return 0;
 143         return -1;
 144 }
 145
 146 static void print_ident(struct synaptics_data *priv)
 147 {
 148         printk(KERN_INFO "Synaptics Touchpad, model: %ld\n", SYN_ID_MODEL(priv->identity));
 149         printk(KERN_INFO " Firmware: %ld.%ld\n", SYN_ID_MAJOR(priv->identity),
 150                SYN_ID_MINOR(priv->identity));
 151         if (SYN_MODEL_ROT180(priv->model_id))
 152                 printk(KERN_INFO " 180 degree mounted touchpad\n");
 153         if (SYN_MODEL_PORTRAIT(priv->model_id))
 154                 printk(KERN_INFO " portrait touchpad\n");
 155         printk(KERN_INFO " Sensor: %ld\n", SYN_MODEL_SENSOR(priv->model_id));
 156         if (SYN_MODEL_NEWABS(priv->model_id))
 157                 printk(KERN_INFO " new absolute packet format\n");
 158         if (SYN_MODEL_PEN(priv->model_id))
 159                 printk(KERN_INFO " pen detection\n");
 160
 161         if (SYN_CAP_EXTENDED(priv->capabilities)) {
 162                 printk(KERN_INFO " Touchpad has extended capability bits\n");
 163                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
 164                         printk(KERN_INFO " -> %d multi-buttons, i.e. besides standard buttons\n",
 165                                (int)(SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)));
 166                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 167                         printk(KERN_INFO " -> middle button\n");
 168                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities))
 169                         printk(KERN_INFO " -> four buttons\n");
 170                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 171                         printk(KERN_INFO " -> multifinger detection\n");
 172                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 173                         printk(KERN_INFO " -> palm detection\n");
 174                 if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 175                         printk(KERN_INFO " -> pass-through port\n");
 176         }
 177 }
 178
 179 static int synaptics_query_hardware(struct psmouse *psmouse)
 180 {
 181         int retries = 0;
 182
 183         while ((retries++ < 3) && psmouse_reset(psmouse))
 184                 printk(KERN_ERR "synaptics reset failed\n");
 185
 186         if (synaptics_identify(psmouse))
 187                 return -1;
 188         if (synaptics_model_id(psmouse))
 189                 return -1;
 190         if (synaptics_capability(psmouse))
 191                 return -1;
 192
 193         return 0;
 194 }
 195
 196 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
 197 {
 198         struct synaptics_data *priv = psmouse->private;
 199
 200         priv->mode = SYN_BIT_ABSOLUTE_MODE;
 201         if (SYN_ID_MAJOR(priv->identity) >= 4)
 202                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
 203         if (SYN_CAP_EXTENDED(priv->capabilities))
 204                 priv->mode |= SYN_BIT_W_MODE;
 205
 206         if (synaptics_mode_cmd(psmouse, priv->mode))
 207                 return -1;
 208
 209         return 0;
 210 }
 211
 212 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
 213 {
 214         struct synaptics_data *priv = psmouse->private;
 215
 216         if (rate >= 80) {
 217                 priv->mode |= SYN_BIT_HIGH_RATE;
 218                 psmouse->rate = 80;
 219         } else {
 220                 priv->mode &= ~SYN_BIT_HIGH_RATE;
 221                 psmouse->rate = 40;
 222         }
 223
 224         synaptics_mode_cmd(psmouse, priv->mode);
 225 }
 226
 227 /*****************************************************************************
 228  *      Synaptics pass-through PS/2 port support
 229  ****************************************************************************/
 230 static int synaptics_pt_write(struct serio *serio, unsigned char c)
 231 {
 232         struct psmouse *parent = serio_get_drvdata(serio->parent);
 233         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
 234
 235         if (psmouse_sliced_command(parent, c))
 236                 return -1;
 237         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
 238                 return -1;
 239         return 0;
 240 }
 241
 242 static inline int synaptics_is_pt_packet(unsigned char *buf)
 243 {
 244         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 245 }
 246
 247 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
 248 {
 249         struct psmouse *child = serio_get_drvdata(ptport);
 250
 251         if (child && child->state == PSMOUSE_ACTIVATED) {
 252                 serio_interrupt(ptport, packet[1], 0, NULL);
 253                 serio_interrupt(ptport, packet[4], 0, NULL);
 254                 serio_interrupt(ptport, packet[5], 0, NULL);
 255                 if (child->type >= PSMOUSE_GENPS)
 256                         serio_interrupt(ptport, packet[2], 0, NULL);
 257         } else
 258                 serio_interrupt(ptport, packet[1], 0, NULL);
 259 }
 260
 261 static void synaptics_pt_activate(struct psmouse *psmouse)
 262 {
 263         struct serio *ptport = psmouse->ps2dev.serio->child;
 264         struct psmouse *child = serio_get_drvdata(ptport);
 265         struct synaptics_data *priv = psmouse->private;
 266
 267         /* adjust the touchpad to child's choice of protocol */
 268         if (child) {
 269                 if (child->type >= PSMOUSE_GENPS)
 270                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
 271                 else
 272                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
 273
 274                 if (synaptics_mode_cmd(psmouse, priv->mode))
 275                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
 276         }
 277 }
 278
 279 static void synaptics_pt_create(struct psmouse *psmouse)
 280 {
 281         struct serio *serio;
 282
 283         serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
 284         if (!serio) {
 285                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
 286                 return;
 287         }
 288
 289         memset(serio, 0, sizeof(struct serio));
 290
 291         serio->id.type = SERIO_PS_PSTHRU;
 292         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 293         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 294         serio->write = synaptics_pt_write;
 295         serio->parent = psmouse->ps2dev.serio;
 296
 297         psmouse->pt_activate = synaptics_pt_activate;
 298
 299         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
 300         serio_register_port(serio);
 301 }
 302
 303 /*****************************************************************************
 304  *      Functions to interpret the absolute mode packets
 305  ****************************************************************************/
 306
 307 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
 308 {
 309         memset(hw, 0, sizeof(struct synaptics_hw_state));
 310
 311         if (SYN_MODEL_NEWABS(priv->model_id)) {
 312                 hw->x = (((buf[3] & 0x10) << 8) |
 313                          ((buf[1] & 0x0f) << 8) |
 314                          buf[4]);
 315                 hw->y = (((buf[3] & 0x20) << 7) |
 316                          ((buf[1] & 0xf0) << 4) |
 317                          buf[5]);
 318
 319                 hw->z = buf[2];
 320                 hw->w = (((buf[0] & 0x30) >> 2) |
 321                          ((buf[0] & 0x04) >> 1) |
 322                          ((buf[3] & 0x04) >> 2));
 323
 324                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 325                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 326
 327                 if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 328                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 329                         if (hw->w == 2)
 330                                 hw->scroll = (signed char)(buf[1]);
 331                 }
 332
 333                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 334                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 335                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 336                 }
 337
 338                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
 339                     ((buf[0] ^ buf[3]) & 0x02)) {
 340                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
 341                         default:
 342                                 /*
 343                                  * if nExtBtn is greater than 8 it should be
 344                                  * considered invalid and treated as 0
 345                                  */
 346                                 break;
 347                         case 8:
 348                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
 349                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
 350                         case 6:
 351                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
 352                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
 353                         case 4:
 354                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
 355                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
 356                         case 2:
 357                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
 358                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
 359                         }
 360                 }
 361         } else {
 362                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
 363                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
 364
 365                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
 366                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
 367
 368                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 369                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 370         }
 371 }
 372
 373 /*
 374  *  called for each full received packet from the touchpad
 375  */
 376 static void synaptics_process_packet(struct psmouse *psmouse)
 377 {
 378         struct input_dev *dev = &psmouse->dev;
 379         struct synaptics_data *priv = psmouse->private;
 380         struct synaptics_hw_state hw;
 381         int num_fingers;
 382         int finger_width;
 383         int i;
 384
 385         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
 386
 387         if (hw.scroll) {
 388                 priv->scroll += hw.scroll;
 389
 390                 while (priv->scroll >= 4) {
 391                         input_report_key(dev, BTN_BACK, !hw.down);
 392                         input_sync(dev);
 393                         input_report_key(dev, BTN_BACK, hw.down);
 394                         input_sync(dev);
 395                         priv->scroll -= 4;
 396                 }
 397                 while (priv->scroll <= -4) {
 398                         input_report_key(dev, BTN_FORWARD, !hw.up);
 399                         input_sync(dev);
 400                         input_report_key(dev, BTN_FORWARD, hw.up);
 401                         input_sync(dev);
 402                         priv->scroll += 4;
 403                 }
 404                 return;
 405         }
 406
 407         if (hw.z > 0) {
 408                 num_fingers = 1;
 409                 finger_width = 5;
 410                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
 411                         switch (hw.w) {
 412                         case 0 ... 1:
 413                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 414                                         num_fingers = hw.w + 2;
 415                                 break;
 416                         case 2:
 417                                 if (SYN_MODEL_PEN(priv->model_id))
 418                                         ;   /* Nothing, treat a pen as a single finger */
 419                                 break;
 420                         case 4 ... 15:
 421                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 422                                         finger_width = hw.w;
 423                                 break;
 424                         }
 425                 }
 426         } else {
 427                 num_fingers = 0;
 428                 finger_width = 0;
 429         }
 430
 431         /* Post events
 432          * BTN_TOUCH has to be first as mousedev relies on it when doing
 433          * absolute -> relative conversion
 434          */
 435         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
 436         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
 437
 438         if (hw.z > 0) {
 439                 input_report_abs(dev, ABS_X, hw.x);
 440                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
 441         }
 442         input_report_abs(dev, ABS_PRESSURE, hw.z);
 443
 444         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
 445         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
 446         input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
 447         input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
 448
 449         input_report_key(dev, BTN_LEFT, hw.left);
 450         input_report_key(dev, BTN_RIGHT, hw.right);
 451
 452         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 453                 input_report_key(dev, BTN_MIDDLE, hw.middle);
 454
 455         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 456                 input_report_key(dev, BTN_FORWARD, hw.up);
 457                 input_report_key(dev, BTN_BACK, hw.down);
 458         }
 459
 460         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 461                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
 462
 463         input_sync(dev);
 464 }
 465
 466 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
 467 {
 468         static unsigned char newabs_mask[]      = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
 469         static unsigned char newabs_rel_mask[]  = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
 470         static unsigned char newabs_rslt[]      = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
 471         static unsigned char oldabs_mask[]      = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
 472         static unsigned char oldabs_rslt[]      = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
 473
 474         if (idx < 0 || idx > 4)
 475                 return 0;
 476
 477         switch (pkt_type) {
 478                 case SYN_NEWABS:
 479                 case SYN_NEWABS_RELAXED:
 480                         return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
 481
 482                 case SYN_NEWABS_STRICT:
 483                         return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
 484
 485                 case SYN_OLDABS:
 486                         return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
 487
 488                 default:
 489                         printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
 490                         return 0;
 491         }
 492 }
 493
 494 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
 495 {
 496         int i;
 497
 498         for (i = 0; i < 5; i++)
 499                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
 500                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
 501                         return SYN_NEWABS_RELAXED;
 502                 }
 503
 504         return SYN_NEWABS_STRICT;
 505 }
 506
 507 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
 508 {
 509         struct input_dev *dev = &psmouse->dev;
 510         struct synaptics_data *priv = psmouse->private;
 511
 512         input_regs(dev, regs);
 513
 514         if (psmouse->pktcnt >= 6) { /* Full packet received */
 515                 if (unlikely(priv->pkt_type == SYN_NEWABS))
 516                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 517
 518                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
 519                         if (psmouse->ps2dev.serio->child)
 520                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
 521                 } else
 522                         synaptics_process_packet(psmouse);
 523
 524                 return PSMOUSE_FULL_PACKET;
 525         }
 526
 527         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
 528                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 529 }
 530
 531 /*****************************************************************************
 532  *      Driver initialization/cleanup functions
 533  ****************************************************************************/
 534 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 535 {
 536         int i;
 537
 538         set_bit(EV_ABS, dev->evbit);
 539         input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
 540         input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
 541         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
 542         set_bit(ABS_TOOL_WIDTH, dev->absbit);
 543
 544         set_bit(EV_KEY, dev->evbit);
 545         set_bit(BTN_TOUCH, dev->keybit);
 546         set_bit(BTN_TOOL_FINGER, dev->keybit);
 547         set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
 548         set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
 549
 550         set_bit(BTN_LEFT, dev->keybit);
 551         set_bit(BTN_RIGHT, dev->keybit);
 552
 553         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 554                 set_bit(BTN_MIDDLE, dev->keybit);
 555
 556         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
 557             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 558                 set_bit(BTN_FORWARD, dev->keybit);
 559                 set_bit(BTN_BACK, dev->keybit);
 560         }
 561
 562         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 563                 set_bit(BTN_0 + i, dev->keybit);
 564
 565         clear_bit(EV_REL, dev->evbit);
 566         clear_bit(REL_X, dev->relbit);
 567         clear_bit(REL_Y, dev->relbit);
 568 }
 569
 570 void synaptics_reset(struct psmouse *psmouse)
 571 {
 572         /* reset touchpad back to relative mode, gestures enabled */
 573         synaptics_mode_cmd(psmouse, 0);
 574 }
 575
 576 static void synaptics_disconnect(struct psmouse *psmouse)
 577 {
 578         synaptics_reset(psmouse);
 579         kfree(psmouse->private);
 580         psmouse->private = NULL;
 581 }
 582
 583 static int synaptics_reconnect(struct psmouse *psmouse)
 584 {
 585         struct synaptics_data *priv = psmouse->private;
 586         struct synaptics_data old_priv = *priv;
 587
 588         if (synaptics_detect(psmouse, 0))
 589                 return -1;
 590
 591         if (synaptics_query_hardware(psmouse)) {
 592                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 593                 return -1;
 594         }
 595
 596         if (old_priv.identity != priv->identity ||
 597             old_priv.model_id != priv->model_id ||
 598             old_priv.capabilities != priv->capabilities ||
 599             old_priv.ext_cap != priv->ext_cap)
 600                 return -1;
 601
 602         if (synaptics_set_absolute_mode(psmouse)) {
 603                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 604                 return -1;
 605         }
 606
 607         return 0;
 608 }
 609
 610 int synaptics_detect(struct psmouse *psmouse, int set_properties)
 611 {
 612         struct ps2dev *ps2dev = &psmouse->ps2dev;
 613         unsigned char param[4];
 614
 615         param[0] = 0;
 616
 617         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 618         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 619         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 620         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
 621         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
 622
 623         if (param[1] != 0x47)
 624                 return -1;
 625
 626         if (set_properties) {
 627                 psmouse->vendor = "Synaptics";
 628                 psmouse->name = "TouchPad";
 629         }
 630
 631         return 0;
 632 }
 633
 634 #if defined(__i386__)
 635 #include <linux/dmi.h>
 636 static struct dmi_system_id toshiba_dmi_table[] = {
 637         {
 638                 .ident = "Toshiba Satellite",
 639                 .matches = {
 640                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 641                         DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
 642                 },
 643         },
 644         { }
 645 };
 646 #endif
 647
 648 int synaptics_init(struct psmouse *psmouse)
 649 {
 650         struct synaptics_data *priv;
 651
 652         psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 653         if (!priv)
 654                 return -1;
 655         memset(priv, 0, sizeof(struct synaptics_data));
 656
 657         if (synaptics_query_hardware(psmouse)) {
 658                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 659                 goto init_fail;
 660         }
 661
 662         if (synaptics_set_absolute_mode(psmouse)) {
 663                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 664                 goto init_fail;
 665         }
 666
 667         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
 668
 669         print_ident(priv);
 670         set_input_params(&psmouse->dev, priv);
 671
 672         psmouse->protocol_handler = synaptics_process_byte;
 673         psmouse->set_rate = synaptics_set_rate;
 674         psmouse->disconnect = synaptics_disconnect;
 675         psmouse->reconnect = synaptics_reconnect;
 676         psmouse->pktsize = 6;
 677
 678         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 679                 synaptics_pt_create(psmouse);
 680
 681 #if defined(__i386__)
 682         /*
 683          * Toshiba's KBC seems to have trouble handling data from
 684          * Synaptics as full rate, switch to lower rate which is roughly
 685          * thye same as rate of standard PS/2 mouse.
 686          */
 687         if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
 688                 printk(KERN_INFO "synaptics: Toshiba Satellite detected, limiting rate to 40pps.\n");
 689                 psmouse->rate = 40;
 690         }
 691 #endif
 692
 693         return 0;
 694
 695  init_fail:
 696         kfree(priv);
 697         return -1;
 698 }
 699
 700