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                 return 0;
 210
 211         if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res) == 0) {
 212                 if (res[0] != 0 && (res[1] & 0x80) && res[2] != 0) {
 213                         priv->x_res = res[0]; /* x resolution in units/mm */
 214                         priv->y_res = res[2]; /* y resolution in units/mm */
 215                 }
 216         }
 217
 218         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
 219             SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
 220                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_DIMENSIONS, max)) {
 221                         printk(KERN_ERR "Synaptics claims to have dimensions query,"
 222                                " but I'm not able to read it.\n");
 223                 } else {
 224                         priv->x_max = (max[0] << 5) | ((max[1] & 0x0f) << 1);
 225                         priv->y_max = (max[2] << 5) | ((max[1] & 0xf0) >> 3);
 226                 }
 227         }
 228
 229         return 0;
 230 }
 231
 232 static int synaptics_query_hardware(struct psmouse *psmouse)
 233 {
 234         if (synaptics_identify(psmouse))
 235                 return -1;
 236         if (synaptics_model_id(psmouse))
 237                 return -1;
 238         if (synaptics_capability(psmouse))
 239                 return -1;
 240         if (synaptics_resolution(psmouse))
 241                 return -1;
 242
 243         return 0;
 244 }
 245
 246 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
 247 {
 248         struct synaptics_data *priv = psmouse->private;
 249
 250         priv->mode = SYN_BIT_ABSOLUTE_MODE;
 251         if (SYN_ID_MAJOR(priv->identity) >= 4)
 252                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
 253         if (SYN_CAP_EXTENDED(priv->capabilities))
 254                 priv->mode |= SYN_BIT_W_MODE;
 255
 256         if (synaptics_mode_cmd(psmouse, priv->mode))
 257                 return -1;
 258
 259         return 0;
 260 }
 261
 262 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
 263 {
 264         struct synaptics_data *priv = psmouse->private;
 265
 266         if (rate >= 80) {
 267                 priv->mode |= SYN_BIT_HIGH_RATE;
 268                 psmouse->rate = 80;
 269         } else {
 270                 priv->mode &= ~SYN_BIT_HIGH_RATE;
 271                 psmouse->rate = 40;
 272         }
 273
 274         synaptics_mode_cmd(psmouse, priv->mode);
 275 }
 276
 277 /*****************************************************************************
 278  *      Synaptics pass-through PS/2 port support
 279  ****************************************************************************/
 280 static int synaptics_pt_write(struct serio *serio, unsigned char c)
 281 {
 282         struct psmouse *parent = serio_get_drvdata(serio->parent);
 283         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
 284
 285         if (psmouse_sliced_command(parent, c))
 286                 return -1;
 287         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
 288                 return -1;
 289         return 0;
 290 }
 291
 292 static inline int synaptics_is_pt_packet(unsigned char *buf)
 293 {
 294         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 295 }
 296
 297 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
 298 {
 299         struct psmouse *child = serio_get_drvdata(ptport);
 300
 301         if (child && child->state == PSMOUSE_ACTIVATED) {
 302                 serio_interrupt(ptport, packet[1], 0);
 303                 serio_interrupt(ptport, packet[4], 0);
 304                 serio_interrupt(ptport, packet[5], 0);
 305                 if (child->pktsize == 4)
 306                         serio_interrupt(ptport, packet[2], 0);
 307         } else
 308                 serio_interrupt(ptport, packet[1], 0);
 309 }
 310
 311 static void synaptics_pt_activate(struct psmouse *psmouse)
 312 {
 313         struct serio *ptport = psmouse->ps2dev.serio->child;
 314         struct psmouse *child = serio_get_drvdata(ptport);
 315         struct synaptics_data *priv = psmouse->private;
 316
 317         /* adjust the touchpad to child's choice of protocol */
 318         if (child) {
 319                 if (child->pktsize == 4)
 320                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
 321                 else
 322                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
 323
 324                 if (synaptics_mode_cmd(psmouse, priv->mode))
 325                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
 326         }
 327 }
 328
 329 static void synaptics_pt_create(struct psmouse *psmouse)
 330 {
 331         struct serio *serio;
 332
 333         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 334         if (!serio) {
 335                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
 336                 return;
 337         }
 338
 339         serio->id.type = SERIO_PS_PSTHRU;
 340         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 341         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 342         serio->write = synaptics_pt_write;
 343         serio->parent = psmouse->ps2dev.serio;
 344
 345         psmouse->pt_activate = synaptics_pt_activate;
 346
 347         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
 348         serio_register_port(serio);
 349 }
 350
 351 /*****************************************************************************
 352  *      Functions to interpret the absolute mode packets
 353  ****************************************************************************/
 354
 355 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
 356 {
 357         memset(hw, 0, sizeof(struct synaptics_hw_state));
 358
 359         if (SYN_MODEL_NEWABS(priv->model_id)) {
 360                 hw->x = (((buf[3] & 0x10) << 8) |
 361                          ((buf[1] & 0x0f) << 8) |
 362                          buf[4]);
 363                 hw->y = (((buf[3] & 0x20) << 7) |
 364                          ((buf[1] & 0xf0) << 4) |
 365                          buf[5]);
 366
 367                 hw->z = buf[2];
 368                 hw->w = (((buf[0] & 0x30) >> 2) |
 369                          ((buf[0] & 0x04) >> 1) |
 370                          ((buf[3] & 0x04) >> 2));
 371
 372                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 373                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 374
 375                 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 376                         /*
 377                          * Clickpad's button is transmitted as middle button,
 378                          * however, since it is primary button, we will report
 379                          * it as BTN_LEFT.
 380                          */
 381                         hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 382
 383                 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 384                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 385                         if (hw->w == 2)
 386                                 hw->scroll = (signed char)(buf[1]);
 387                 }
 388
 389                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 390                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 391                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 392                 }
 393
 394                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
 395                     ((buf[0] ^ buf[3]) & 0x02)) {
 396                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
 397                         default:
 398                                 /*
 399                                  * if nExtBtn is greater than 8 it should be
 400                                  * considered invalid and treated as 0
 401                                  */
 402                                 break;
 403                         case 8:
 404                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
 405                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
 406                         case 6:
 407                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
 408                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
 409                         case 4:
 410                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
 411                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
 412                         case 2:
 413                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
 414                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
 415                         }
 416                 }
 417         } else {
 418                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
 419                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
 420
 421                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
 422                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
 423
 424                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 425                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 426         }
 427 }
 428
 429 /*
 430  *  called for each full received packet from the touchpad
 431  */
 432 static void synaptics_process_packet(struct psmouse *psmouse)
 433 {
 434         struct input_dev *dev = psmouse->dev;
 435         struct synaptics_data *priv = psmouse->private;
 436         struct synaptics_hw_state hw;
 437         int num_fingers;
 438         int finger_width;
 439         int i;
 440
 441         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
 442
 443         if (hw.scroll) {
 444                 priv->scroll += hw.scroll;
 445
 446                 while (priv->scroll >= 4) {
 447                         input_report_key(dev, BTN_BACK, !hw.down);
 448                         input_sync(dev);
 449                         input_report_key(dev, BTN_BACK, hw.down);
 450                         input_sync(dev);
 451                         priv->scroll -= 4;
 452                 }
 453                 while (priv->scroll <= -4) {
 454                         input_report_key(dev, BTN_FORWARD, !hw.up);
 455                         input_sync(dev);
 456                         input_report_key(dev, BTN_FORWARD, hw.up);
 457                         input_sync(dev);
 458                         priv->scroll += 4;
 459                 }
 460                 return;
 461         }
 462
 463         if (hw.z > 0) {
 464                 num_fingers = 1;
 465                 finger_width = 5;
 466                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
 467                         switch (hw.w) {
 468                         case 0 ... 1:
 469                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 470                                         num_fingers = hw.w + 2;
 471                                 break;
 472                         case 2:
 473                                 if (SYN_MODEL_PEN(priv->model_id))
 474                                         ;   /* Nothing, treat a pen as a single finger */
 475                                 break;
 476                         case 4 ... 15:
 477                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 478                                         finger_width = hw.w;
 479                                 break;
 480                         }
 481                 }
 482         } else {
 483                 num_fingers = 0;
 484                 finger_width = 0;
 485         }
 486
 487         /* Post events
 488          * BTN_TOUCH has to be first as mousedev relies on it when doing
 489          * absolute -> relative conversion
 490          */
 491         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
 492         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
 493
 494         if (hw.z > 0) {
 495                 input_report_abs(dev, ABS_X, hw.x);
 496                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
 497         }
 498         input_report_abs(dev, ABS_PRESSURE, hw.z);
 499
 500         input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
 501         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
 502         input_report_key(dev, BTN_LEFT, hw.left);
 503         input_report_key(dev, BTN_RIGHT, hw.right);
 504
 505         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 506                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
 507                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
 508         }
 509
 510         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 511                 input_report_key(dev, BTN_MIDDLE, hw.middle);
 512
 513         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 514                 input_report_key(dev, BTN_FORWARD, hw.up);
 515                 input_report_key(dev, BTN_BACK, hw.down);
 516         }
 517
 518         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 519                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
 520
 521         input_sync(dev);
 522 }
 523
 524 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
 525 {
 526         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
 527         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
 528         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
 529         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
 530         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
 531
 532         if (idx < 0 || idx > 4)
 533                 return 0;
 534
 535         switch (pkt_type) {
 536
 537         case SYN_NEWABS:
 538         case SYN_NEWABS_RELAXED:
 539                 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
 540
 541         case SYN_NEWABS_STRICT:
 542                 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
 543
 544         case SYN_OLDABS:
 545                 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
 546
 547         default:
 548                 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
 549                 return 0;
 550         }
 551 }
 552
 553 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
 554 {
 555         int i;
 556
 557         for (i = 0; i < 5; i++)
 558                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
 559                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
 560                         return SYN_NEWABS_RELAXED;
 561                 }
 562
 563         return SYN_NEWABS_STRICT;
 564 }
 565
 566 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 567 {
 568         struct synaptics_data *priv = psmouse->private;
 569
 570         if (psmouse->pktcnt >= 6) { /* Full packet received */
 571                 if (unlikely(priv->pkt_type == SYN_NEWABS))
 572                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 573
 574                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
 575                         if (psmouse->ps2dev.serio->child)
 576                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
 577                 } else
 578                         synaptics_process_packet(psmouse);
 579
 580                 return PSMOUSE_FULL_PACKET;
 581         }
 582
 583         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
 584                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 585 }
 586
 587 /*****************************************************************************
 588  *      Driver initialization/cleanup functions
 589  ****************************************************************************/
 590 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 591 {
 592         int i;
 593
 594         __set_bit(EV_ABS, dev->evbit);
 595         input_set_abs_params(dev, ABS_X,
 596                              XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
 597         input_set_abs_params(dev, ABS_Y,
 598                              YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
 599         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
 600         __set_bit(ABS_TOOL_WIDTH, dev->absbit);
 601
 602         __set_bit(EV_KEY, dev->evbit);
 603         __set_bit(BTN_TOUCH, dev->keybit);
 604         __set_bit(BTN_TOOL_FINGER, dev->keybit);
 605         __set_bit(BTN_LEFT, dev->keybit);
 606         __set_bit(BTN_RIGHT, dev->keybit);
 607
 608         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 609                 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
 610                 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
 611         }
 612
 613         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 614                 __set_bit(BTN_MIDDLE, dev->keybit);
 615
 616         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
 617             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 618                 __set_bit(BTN_FORWARD, dev->keybit);
 619                 __set_bit(BTN_BACK, dev->keybit);
 620         }
 621
 622         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 623                 __set_bit(BTN_0 + i, dev->keybit);
 624
 625         __clear_bit(EV_REL, dev->evbit);
 626         __clear_bit(REL_X, dev->relbit);
 627         __clear_bit(REL_Y, dev->relbit);
 628
 629         dev->absres[ABS_X] = priv->x_res;
 630         dev->absres[ABS_Y] = priv->y_res;
 631
 632         if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 633                 /* Clickpads report only left button */
 634                 __clear_bit(BTN_RIGHT, dev->keybit);
 635                 __clear_bit(BTN_MIDDLE, dev->keybit);
 636         }
 637 }
 638
 639 static void synaptics_disconnect(struct psmouse *psmouse)
 640 {
 641         synaptics_reset(psmouse);
 642         kfree(psmouse->private);
 643         psmouse->private = NULL;
 644 }
 645
 646 static int synaptics_reconnect(struct psmouse *psmouse)
 647 {
 648         struct synaptics_data *priv = psmouse->private;
 649         struct synaptics_data old_priv = *priv;
 650
 651         psmouse_reset(psmouse);
 652
 653         if (synaptics_detect(psmouse, 0))
 654                 return -1;
 655
 656         if (synaptics_query_hardware(psmouse)) {
 657                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 658                 return -1;
 659         }
 660
 661         if (old_priv.identity != priv->identity ||
 662             old_priv.model_id != priv->model_id ||
 663             old_priv.capabilities != priv->capabilities ||
 664             old_priv.ext_cap != priv->ext_cap)
 665                 return -1;
 666
 667         if (synaptics_set_absolute_mode(psmouse)) {
 668                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 669                 return -1;
 670         }
 671
 672         return 0;
 673 }
 674
 675 static bool impaired_toshiba_kbc;
 676
 677 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
 678 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
 679         {
 680                 /* Toshiba Satellite */
 681                 .matches = {
 682                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 683                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
 684                 },
 685         },
 686         {
 687                 /* Toshiba Dynabook */
 688                 .matches = {
 689                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 690                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
 691                 },
 692         },
 693         {
 694                 /* Toshiba Portege M300 */
 695                 .matches = {
 696                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 697                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
 698                 },
 699
 700         },
 701         {
 702                 /* Toshiba Portege M300 */
 703                 .matches = {
 704                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 705                         DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
 706                         DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
 707                 },
 708
 709         },
 710         { }
 711 #endif
 712 };
 713
 714 void __init synaptics_module_init(void)
 715 {
 716         impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
 717 }
 718
 719 int synaptics_init(struct psmouse *psmouse)
 720 {
 721         struct synaptics_data *priv;
 722
 723         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 724         if (!priv)
 725                 return -1;
 726
 727         psmouse_reset(psmouse);
 728
 729         if (synaptics_query_hardware(psmouse)) {
 730                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 731                 goto init_fail;
 732         }
 733
 734         if (synaptics_set_absolute_mode(psmouse)) {
 735                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 736                 goto init_fail;
 737         }
 738
 739         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
 740
 741         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
 742                 SYN_ID_MODEL(priv->identity),
 743                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
 744                 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
 745
 746         set_input_params(psmouse->dev, priv);
 747
 748         /*
 749          * Encode touchpad model so that it can be used to set
 750          * input device->id.version and be visible to userspace.
 751          * Because version is __u16 we have to drop something.
 752          * Hardware info bits seem to be good candidates as they
 753          * are documented to be for Synaptics corp. internal use.
 754          */
 755         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
 756                           (priv->model_id & 0x000000ff);
 757
 758         psmouse->protocol_handler = synaptics_process_byte;
 759         psmouse->set_rate = synaptics_set_rate;
 760         psmouse->disconnect = synaptics_disconnect;
 761         psmouse->reconnect = synaptics_reconnect;
 762         psmouse->cleanup = synaptics_reset;
 763         psmouse->pktsize = 6;
 764         /* Synaptics can usually stay in sync without extra help */
 765         psmouse->resync_time = 0;
 766
 767         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 768                 synaptics_pt_create(psmouse);
 769
 770         /*
 771          * Toshiba's KBC seems to have trouble handling data from
 772          * Synaptics as full rate, switch to lower rate which is roughly
 773          * thye same as rate of standard PS/2 mouse.
 774          */
 775         if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
 776                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
 777                         dmi_get_system_info(DMI_PRODUCT_NAME));
 778                 psmouse->rate = 40;
 779         }
 780
 781         return 0;
 782
 783  init_fail:
 784         kfree(priv);
 785         return -1;
 786 }
 787
 788 bool synaptics_supported(void)
 789 {
 790         return true;
 791 }
 792
 793 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
 794
 795 void __init synaptics_module_init(void)
 796 {
 797 }
 798
 799 int synaptics_init(struct psmouse *psmouse)
 800 {
 801         return -ENOSYS;
 802 }
 803
 804 bool synaptics_supported(void)
 805 {
 806         return false;
 807 }
 808
 809 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
 810