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  * Note that newer firmware allows querying device for maximum useable
  40  * coordinates.
  41  */
  42 #define XMIN_NOMINAL 1472
  43 #define XMAX_NOMINAL 5472
  44 #define YMIN_NOMINAL 1408
  45 #define YMAX_NOMINAL 4448
  46
  47
  48 /*****************************************************************************
  49  *      Stuff we need even when we do not want native Synaptics support
  50  ****************************************************************************/
  51
  52 /*
  53  * Set the synaptics touchpad mode byte by special commands
  54  */
  55 static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
  56 {
  57         unsigned char param[1];
  58
  59         if (psmouse_sliced_command(psmouse, mode))
  60                 return -1;
  61         param[0] = SYN_PS_SET_MODE2;
  62         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
  63                 return -1;
  64         return 0;
  65 }
  66
  67 int synaptics_detect(struct psmouse *psmouse, bool set_properties)
  68 {
  69         struct ps2dev *ps2dev = &psmouse->ps2dev;
  70         unsigned char param[4];
  71
  72         param[0] = 0;
  73
  74         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  75         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  76         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  77         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
  78         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
  79
  80         if (param[1] != 0x47)
  81                 return -ENODEV;
  82
  83         if (set_properties) {
  84                 psmouse->vendor = "Synaptics";
  85                 psmouse->name = "TouchPad";
  86         }
  87
  88         return 0;
  89 }
  90
  91 void synaptics_reset(struct psmouse *psmouse)
  92 {
  93         /* reset touchpad back to relative mode, gestures enabled */
  94         synaptics_mode_cmd(psmouse, 0);
  95 }
  96
  97 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
  98
  99 /*****************************************************************************
 100  *      Synaptics communications functions
 101  ****************************************************************************/
 102
 103 /*
 104  * Send a command to the synpatics touchpad by special commands
 105  */
 106 static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
 107 {
 108         if (psmouse_sliced_command(psmouse, c))
 109                 return -1;
 110         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
 111                 return -1;
 112         return 0;
 113 }
 114
 115 /*
 116  * Read the model-id bytes from the touchpad
 117  * see also SYN_MODEL_* macros
 118  */
 119 static int synaptics_model_id(struct psmouse *psmouse)
 120 {
 121         struct synaptics_data *priv = psmouse->private;
 122         unsigned char mi[3];
 123
 124         if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
 125                 return -1;
 126         priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
 127         return 0;
 128 }
 129
 130 /*
 131  * Read the capability-bits from the touchpad
 132  * see also the SYN_CAP_* macros
 133  */
 134 static int synaptics_capability(struct psmouse *psmouse)
 135 {
 136         struct synaptics_data *priv = psmouse->private;
 137         unsigned char cap[3];
 138
 139         if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
 140                 return -1;
 141         priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 142         priv->ext_cap = priv->ext_cap_0c = 0;
 143
 144         if (!SYN_CAP_VALID(priv->capabilities))
 145                 return -1;
 146
 147         /*
 148          * Unless capExtended is set the rest of the flags should be ignored
 149          */
 150         if (!SYN_CAP_EXTENDED(priv->capabilities))
 151                 priv->capabilities = 0;
 152
 153         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
 154                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
 155                         printk(KERN_ERR "Synaptics claims to have extended capabilities,"
 156                                " but I'm not able to read them.\n");
 157                 } else {
 158                         priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 159
 160                         /*
 161                          * if nExtBtn is greater than 8 it should be considered
 162                          * invalid and treated as 0
 163                          */
 164                         if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
 165                                 priv->ext_cap &= 0xff0fff;
 166                 }
 167         }
 168
 169         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
 170                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
 171                         printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
 172                                " but I'm not able to read it.\n");
 173                 } else {
 174                         priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 175                 }
 176         }
 177
 178         return 0;
 179 }
 180
 181 /*
 182  * Identify Touchpad
 183  * See also the SYN_ID_* macros
 184  */
 185 static int synaptics_identify(struct psmouse *psmouse)
 186 {
 187         struct synaptics_data *priv = psmouse->private;
 188         unsigned char id[3];
 189
 190         if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
 191                 return -1;
 192         priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
 193         if (SYN_ID_IS_SYNAPTICS(priv->identity))
 194                 return 0;
 195         return -1;
 196 }
 197
 198 /*
 199  * Read touchpad resolution and maximum reported coordinates
 200  * Resolution is left zero if touchpad does not support the query
 201  */
 202 static int synaptics_resolution(struct psmouse *psmouse)
 203 {
 204         struct synaptics_data *priv = psmouse->private;
 205         unsigned char res[3];
 206         unsigned char max[3];
 207
 208         if (SYN_ID_MAJOR(priv->identity) < 4)
 209
 210         if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res) == 0) {
 211                 if (res[0] != 0 && (res[1] & 0x80) && res[2] != 0) {
 212                         priv->x_res = res[0]; /* x resolution in units/mm */
 213                         priv->y_res = res[2]; /* y resolution in units/mm */
 214                 }
 215         }
 216
 217         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
 218             SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
 219                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_DIMENSIONS, max)) {
 220                         printk(KERN_ERR "Synaptics claims to have dimensions query,"
 221                                " but I'm not able to read it.\n");
 222                 } else {
 223                         priv->x_max = (max[0] << 5) | ((max[1] & 0x0f) << 1);
 224                         priv->y_max = (max[2] << 5) | ((max[1] & 0xf0) >> 3);
 225                 }
 226         }
 227
 228         return 0;
 229 }
 230
 231 static int synaptics_query_hardware(struct psmouse *psmouse)
 232 {
 233         if (synaptics_identify(psmouse))
 234                 return -1;
 235         if (synaptics_model_id(psmouse))
 236                 return -1;
 237         if (synaptics_capability(psmouse))
 238                 return -1;
 239         if (synaptics_resolution(psmouse))
 240                 return -1;
 241
 242         return 0;
 243 }
 244
 245 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
 246 {
 247         struct synaptics_data *priv = psmouse->private;
 248
 249         priv->mode = SYN_BIT_ABSOLUTE_MODE;
 250         if (SYN_ID_MAJOR(priv->identity) >= 4)
 251                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
 252         if (SYN_CAP_EXTENDED(priv->capabilities))
 253                 priv->mode |= SYN_BIT_W_MODE;
 254
 255         if (synaptics_mode_cmd(psmouse, priv->mode))
 256                 return -1;
 257
 258         return 0;
 259 }
 260
 261 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
 262 {
 263         struct synaptics_data *priv = psmouse->private;
 264
 265         if (rate >= 80) {
 266                 priv->mode |= SYN_BIT_HIGH_RATE;
 267                 psmouse->rate = 80;
 268         } else {
 269                 priv->mode &= ~SYN_BIT_HIGH_RATE;
 270                 psmouse->rate = 40;
 271         }
 272
 273         synaptics_mode_cmd(psmouse, priv->mode);
 274 }
 275
 276 /*****************************************************************************
 277  *      Synaptics pass-through PS/2 port support
 278  ****************************************************************************/
 279 static int synaptics_pt_write(struct serio *serio, unsigned char c)
 280 {
 281         struct psmouse *parent = serio_get_drvdata(serio->parent);
 282         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
 283
 284         if (psmouse_sliced_command(parent, c))
 285                 return -1;
 286         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
 287                 return -1;
 288         return 0;
 289 }
 290
 291 static inline int synaptics_is_pt_packet(unsigned char *buf)
 292 {
 293         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 294 }
 295
 296 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
 297 {
 298         struct psmouse *child = serio_get_drvdata(ptport);
 299
 300         if (child && child->state == PSMOUSE_ACTIVATED) {
 301                 serio_interrupt(ptport, packet[1], 0);
 302                 serio_interrupt(ptport, packet[4], 0);
 303                 serio_interrupt(ptport, packet[5], 0);
 304                 if (child->pktsize == 4)
 305                         serio_interrupt(ptport, packet[2], 0);
 306         } else
 307                 serio_interrupt(ptport, packet[1], 0);
 308 }
 309
 310 static void synaptics_pt_activate(struct psmouse *psmouse)
 311 {
 312         struct serio *ptport = psmouse->ps2dev.serio->child;
 313         struct psmouse *child = serio_get_drvdata(ptport);
 314         struct synaptics_data *priv = psmouse->private;
 315
 316         /* adjust the touchpad to child's choice of protocol */
 317         if (child) {
 318                 if (child->pktsize == 4)
 319                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
 320                 else
 321                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
 322
 323                 if (synaptics_mode_cmd(psmouse, priv->mode))
 324                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
 325         }
 326 }
 327
 328 static void synaptics_pt_create(struct psmouse *psmouse)
 329 {
 330         struct serio *serio;
 331
 332         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 333         if (!serio) {
 334                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
 335                 return;
 336         }
 337
 338         serio->id.type = SERIO_PS_PSTHRU;
 339         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 340         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 341         serio->write = synaptics_pt_write;
 342         serio->parent = psmouse->ps2dev.serio;
 343
 344         psmouse->pt_activate = synaptics_pt_activate;
 345
 346         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
 347         serio_register_port(serio);
 348 }
 349
 350 /*****************************************************************************
 351  *      Functions to interpret the absolute mode packets
 352  ****************************************************************************/
 353
 354 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
 355 {
 356         memset(hw, 0, sizeof(struct synaptics_hw_state));
 357
 358         if (SYN_MODEL_NEWABS(priv->model_id)) {
 359                 hw->x = (((buf[3] & 0x10) << 8) |
 360                          ((buf[1] & 0x0f) << 8) |
 361                          buf[4]);
 362                 hw->y = (((buf[3] & 0x20) << 7) |
 363                          ((buf[1] & 0xf0) << 4) |
 364                          buf[5]);
 365
 366                 hw->z = buf[2];
 367                 hw->w = (((buf[0] & 0x30) >> 2) |
 368                          ((buf[0] & 0x04) >> 1) |
 369                          ((buf[3] & 0x04) >> 2));
 370
 371                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 372                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 373
 374                 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 375                         /*
 376                          * Clickpad's button is transmitted as middle button,
 377                          * however, since it is primary button, we will report
 378                          * it as BTN_LEFT.
 379                          */
 380                         hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 381
 382                 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 383                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 384                         if (hw->w == 2)
 385                                 hw->scroll = (signed char)(buf[1]);
 386                 }
 387
 388                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 389                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 390                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 391                 }
 392
 393                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
 394                     ((buf[0] ^ buf[3]) & 0x02)) {
 395                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
 396                         default:
 397                                 /*
 398                                  * if nExtBtn is greater than 8 it should be
 399                                  * considered invalid and treated as 0
 400                                  */
 401                                 break;
 402                         case 8:
 403                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
 404                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
 405                         case 6:
 406                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
 407                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
 408                         case 4:
 409                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
 410                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
 411                         case 2:
 412                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
 413                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
 414                         }
 415                 }
 416         } else {
 417                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
 418                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
 419
 420                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
 421                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
 422
 423                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 424                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 425         }
 426 }
 427
 428 /*
 429  *  called for each full received packet from the touchpad
 430  */
 431 static void synaptics_process_packet(struct psmouse *psmouse)
 432 {
 433         struct input_dev *dev = psmouse->dev;
 434         struct synaptics_data *priv = psmouse->private;
 435         struct synaptics_hw_state hw;
 436         int num_fingers;
 437         int finger_width;
 438         int i;
 439
 440         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
 441
 442         if (hw.scroll) {
 443                 priv->scroll += hw.scroll;
 444
 445                 while (priv->scroll >= 4) {
 446                         input_report_key(dev, BTN_BACK, !hw.down);
 447                         input_sync(dev);
 448                         input_report_key(dev, BTN_BACK, hw.down);
 449                         input_sync(dev);
 450                         priv->scroll -= 4;
 451                 }
 452                 while (priv->scroll <= -4) {
 453                         input_report_key(dev, BTN_FORWARD, !hw.up);
 454                         input_sync(dev);
 455                         input_report_key(dev, BTN_FORWARD, hw.up);
 456                         input_sync(dev);
 457                         priv->scroll += 4;
 458                 }
 459                 return;
 460         }
 461
 462         if (hw.z > 0) {
 463                 num_fingers = 1;
 464                 finger_width = 5;
 465                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
 466                         switch (hw.w) {
 467                         case 0 ... 1:
 468                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 469                                         num_fingers = hw.w + 2;
 470                                 break;
 471                         case 2:
 472                                 if (SYN_MODEL_PEN(priv->model_id))
 473                                         ;   /* Nothing, treat a pen as a single finger */
 474                                 break;
 475                         case 4 ... 15:
 476                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 477                                         finger_width = hw.w;
 478                                 break;
 479                         }
 480                 }
 481         } else {
 482                 num_fingers = 0;
 483                 finger_width = 0;
 484         }
 485
 486         /* Post events
 487          * BTN_TOUCH has to be first as mousedev relies on it when doing
 488          * absolute -> relative conversion
 489          */
 490         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
 491         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
 492
 493         if (hw.z > 0) {
 494                 input_report_abs(dev, ABS_X, hw.x);
 495                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
 496         }
 497         input_report_abs(dev, ABS_PRESSURE, hw.z);
 498
 499         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
 500         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
 501         input_report_key(dev, BTN_LEFT, hw.left);
 502         input_report_key(dev, BTN_RIGHT, hw.right);
 503
 504         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 505                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
 506                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
 507         }
 508
 509         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 510                 input_report_key(dev, BTN_MIDDLE, hw.middle);
 511
 512         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 513                 input_report_key(dev, BTN_FORWARD, hw.up);
 514                 input_report_key(dev, BTN_BACK, hw.down);
 515         }
 516
 517         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 518                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
 519
 520         input_sync(dev);
 521 }
 522
 523 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
 524 {
 525         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
 526         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
 527         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
 528         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
 529         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
 530
 531         if (idx < 0 || idx > 4)
 532                 return 0;
 533
 534         switch (pkt_type) {
 535
 536         case SYN_NEWABS:
 537         case SYN_NEWABS_RELAXED:
 538                 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
 539
 540         case SYN_NEWABS_STRICT:
 541                 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
 542
 543         case SYN_OLDABS:
 544                 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
 545
 546         default:
 547                 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
 548                 return 0;
 549         }
 550 }
 551
 552 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
 553 {
 554         int i;
 555
 556         for (i = 0; i < 5; i++)
 557                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
 558                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
 559                         return SYN_NEWABS_RELAXED;
 560                 }
 561
 562         return SYN_NEWABS_STRICT;
 563 }
 564
 565 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 566 {
 567         struct synaptics_data *priv = psmouse->private;
 568
 569         if (psmouse->pktcnt >= 6) { /* Full packet received */
 570                 if (unlikely(priv->pkt_type == SYN_NEWABS))
 571                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 572
 573                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
 574                         if (psmouse->ps2dev.serio->child)
 575                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
 576                 } else
 577                         synaptics_process_packet(psmouse);
 578
 579                 return PSMOUSE_FULL_PACKET;
 580         }
 581
 582         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
 583                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 584 }
 585
 586 /*****************************************************************************
 587  *      Driver initialization/cleanup functions
 588  ****************************************************************************/
 589 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 590 {
 591         int i;
 592
 593         __set_bit(EV_ABS, dev->evbit);
 594         input_set_abs_params(dev, ABS_X,
 595                              XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
 596         input_set_abs_params(dev, ABS_Y,
 597                              YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
 598         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
 599         __set_bit(ABS_TOOL_WIDTH, dev->absbit);
 600
 601         __set_bit(EV_KEY, dev->evbit);
 602         __set_bit(BTN_TOUCH, dev->keybit);
 603         __set_bit(BTN_TOOL_FINGER, dev->keybit);
 604         __set_bit(BTN_LEFT, dev->keybit);
 605         __set_bit(BTN_RIGHT, dev->keybit);
 606
 607         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 608                 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
 609                 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
 610         }
 611
 612         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 613                 __set_bit(BTN_MIDDLE, dev->keybit);
 614
 615         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
 616             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 617                 __set_bit(BTN_FORWARD, dev->keybit);
 618                 __set_bit(BTN_BACK, dev->keybit);
 619         }
 620
 621         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 622                 __set_bit(BTN_0 + i, dev->keybit);
 623
 624         __clear_bit(EV_REL, dev->evbit);
 625         __clear_bit(REL_X, dev->relbit);
 626         __clear_bit(REL_Y, dev->relbit);
 627
 628         dev->absres[ABS_X] = priv->x_res;
 629         dev->absres[ABS_Y] = priv->y_res;
 630
 631         if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 632                 /* Clickpads report only left button */
 633                 __clear_bit(BTN_RIGHT, dev->keybit);
 634                 __clear_bit(BTN_MIDDLE, dev->keybit);
 635         }
 636 }
 637
 638 static void synaptics_disconnect(struct psmouse *psmouse)
 639 {
 640         synaptics_reset(psmouse);
 641         kfree(psmouse->private);
 642         psmouse->private = NULL;
 643 }
 644
 645 static int synaptics_reconnect(struct psmouse *psmouse)
 646 {
 647         struct synaptics_data *priv = psmouse->private;
 648         struct synaptics_data old_priv = *priv;
 649
 650         psmouse_reset(psmouse);
 651
 652         if (synaptics_detect(psmouse, 0))
 653                 return -1;
 654
 655         if (synaptics_query_hardware(psmouse)) {
 656                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 657                 return -1;
 658         }
 659
 660         if (old_priv.identity != priv->identity ||
 661             old_priv.model_id != priv->model_id ||
 662             old_priv.capabilities != priv->capabilities ||
 663             old_priv.ext_cap != priv->ext_cap)
 664                 return -1;
 665
 666         if (synaptics_set_absolute_mode(psmouse)) {
 667                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 668                 return -1;
 669         }
 670
 671         return 0;
 672 }
 673
 674 static bool impaired_toshiba_kbc;
 675
 676 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
 677 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
 678         {
 679                 /* Toshiba Satellite */
 680                 .matches = {
 681                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 682                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
 683                 },
 684         },
 685         {
 686                 /* Toshiba Dynabook */
 687                 .matches = {
 688                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 689                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
 690                 },
 691         },
 692         {
 693                 /* Toshiba Portege M300 */
 694                 .matches = {
 695                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 696                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
 697                 },
 698
 699         },
 700         {
 701                 /* Toshiba Portege M300 */
 702                 .matches = {
 703                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 704                         DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
 705                         DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
 706                 },
 707
 708         },
 709         { }
 710 #endif
 711 };
 712
 713 void __init synaptics_module_init(void)
 714 {
 715         impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
 716 }
 717
 718 int synaptics_init(struct psmouse *psmouse)
 719 {
 720         struct synaptics_data *priv;
 721
 722         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 723         if (!priv)
 724                 return -1;
 725
 726         psmouse_reset(psmouse);
 727
 728         if (synaptics_query_hardware(psmouse)) {
 729                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 730                 goto init_fail;
 731         }
 732
 733         if (synaptics_set_absolute_mode(psmouse)) {
 734                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 735                 goto init_fail;
 736         }
 737
 738         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
 739
 740         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
 741                 SYN_ID_MODEL(priv->identity),
 742                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
 743                 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
 744
 745         set_input_params(psmouse->dev, priv);
 746
 747         /*
 748          * Encode touchpad model so that it can be used to set
 749          * input device->id.version and be visible to userspace.
 750          * Because version is __u16 we have to drop something.
 751          * Hardware info bits seem to be good candidates as they
 752          * are documented to be for Synaptics corp. internal use.
 753          */
 754         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
 755                           (priv->model_id & 0x000000ff);
 756
 757         psmouse->protocol_handler = synaptics_process_byte;
 758         psmouse->set_rate = synaptics_set_rate;
 759         psmouse->disconnect = synaptics_disconnect;
 760         psmouse->reconnect = synaptics_reconnect;
 761         psmouse->cleanup = synaptics_reset;
 762         psmouse->pktsize = 6;
 763         /* Synaptics can usually stay in sync without extra help */
 764         psmouse->resync_time = 0;
 765
 766         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 767                 synaptics_pt_create(psmouse);
 768
 769         /*
 770          * Toshiba's KBC seems to have trouble handling data from
 771          * Synaptics as full rate, switch to lower rate which is roughly
 772          * thye same as rate of standard PS/2 mouse.
 773          */
 774         if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
 775                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
 776                         dmi_get_system_info(DMI_PRODUCT_NAME));
 777                 psmouse->rate = 40;
 778         }
 779
 780         return 0;
 781
 782  init_fail:
 783         kfree(priv);
 784         return -1;
 785 }
 786
 787 bool synaptics_supported(void)
 788 {
 789         return true;
 790 }
 791
 792 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
 793
 794 void __init synaptics_module_init(void)
 795 {
 796 }
 797
 798 int synaptics_init(struct psmouse *psmouse)
 799 {
 800         return -ENOSYS;
 801 }
 802
 803 bool synaptics_supported(void)
 804 {
 805         return false;
 806 }
 807
 808 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
 809