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         /*
 145          * Older firmwares had submodel ID fixed to 0x47
 146          */
 147         if (SYN_ID_FULL(priv->identity) < 0x705 &&
 148             SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
 149                 return -1;
 150         }
 151
 152         /*
 153          * Unless capExtended is set the rest of the flags should be ignored
 154          */
 155         if (!SYN_CAP_EXTENDED(priv->capabilities))
 156                 priv->capabilities = 0;
 157
 158         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
 159                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
 160                         printk(KERN_ERR "Synaptics claims to have extended capabilities,"
 161                                " but I'm not able to read them.\n");
 162                 } else {
 163                         priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 164
 165                         /*
 166                          * if nExtBtn is greater than 8 it should be considered
 167                          * invalid and treated as 0
 168                          */
 169                         if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
 170                                 priv->ext_cap &= 0xff0fff;
 171                 }
 172         }
 173
 174         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
 175                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
 176                         printk(KERN_ERR "Synaptics claims to have extended capability 0x0c,"
 177                                " but I'm not able to read it.\n");
 178                 } else {
 179                         priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
 180                 }
 181         }
 182
 183         return 0;
 184 }
 185
 186 /*
 187  * Identify Touchpad
 188  * See also the SYN_ID_* macros
 189  */
 190 static int synaptics_identify(struct psmouse *psmouse)
 191 {
 192         struct synaptics_data *priv = psmouse->private;
 193         unsigned char id[3];
 194
 195         if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
 196                 return -1;
 197         priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
 198         if (SYN_ID_IS_SYNAPTICS(priv->identity))
 199                 return 0;
 200         return -1;
 201 }
 202
 203 /*
 204  * Read touchpad resolution and maximum reported coordinates
 205  * Resolution is left zero if touchpad does not support the query
 206  */
 207 static int synaptics_resolution(struct psmouse *psmouse)
 208 {
 209         struct synaptics_data *priv = psmouse->private;
 210         unsigned char res[3];
 211         unsigned char max[3];
 212
 213         if (SYN_ID_MAJOR(priv->identity) < 4)
 214                 return 0;
 215
 216         if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, res) == 0) {
 217                 if (res[0] != 0 && (res[1] & 0x80) && res[2] != 0) {
 218                         priv->x_res = res[0]; /* x resolution in units/mm */
 219                         priv->y_res = res[2]; /* y resolution in units/mm */
 220                 }
 221         }
 222
 223         if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
 224             SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
 225                 if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_DIMENSIONS, max)) {
 226                         printk(KERN_ERR "Synaptics claims to have dimensions query,"
 227                                " but I'm not able to read it.\n");
 228                 } else {
 229                         priv->x_max = (max[0] << 5) | ((max[1] & 0x0f) << 1);
 230                         priv->y_max = (max[2] << 5) | ((max[1] & 0xf0) >> 3);
 231                 }
 232         }
 233
 234         return 0;
 235 }
 236
 237 static int synaptics_query_hardware(struct psmouse *psmouse)
 238 {
 239         if (synaptics_identify(psmouse))
 240                 return -1;
 241         if (synaptics_model_id(psmouse))
 242                 return -1;
 243         if (synaptics_capability(psmouse))
 244                 return -1;
 245         if (synaptics_resolution(psmouse))
 246                 return -1;
 247
 248         return 0;
 249 }
 250
 251 static int synaptics_set_absolute_mode(struct psmouse *psmouse)
 252 {
 253         struct synaptics_data *priv = psmouse->private;
 254
 255         priv->mode = SYN_BIT_ABSOLUTE_MODE;
 256         if (SYN_ID_MAJOR(priv->identity) >= 4)
 257                 priv->mode |= SYN_BIT_DISABLE_GESTURE;
 258         if (SYN_CAP_EXTENDED(priv->capabilities))
 259                 priv->mode |= SYN_BIT_W_MODE;
 260
 261         if (synaptics_mode_cmd(psmouse, priv->mode))
 262                 return -1;
 263
 264         return 0;
 265 }
 266
 267 static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
 268 {
 269         struct synaptics_data *priv = psmouse->private;
 270
 271         if (rate >= 80) {
 272                 priv->mode |= SYN_BIT_HIGH_RATE;
 273                 psmouse->rate = 80;
 274         } else {
 275                 priv->mode &= ~SYN_BIT_HIGH_RATE;
 276                 psmouse->rate = 40;
 277         }
 278
 279         synaptics_mode_cmd(psmouse, priv->mode);
 280 }
 281
 282 /*****************************************************************************
 283  *      Synaptics pass-through PS/2 port support
 284  ****************************************************************************/
 285 static int synaptics_pt_write(struct serio *serio, unsigned char c)
 286 {
 287         struct psmouse *parent = serio_get_drvdata(serio->parent);
 288         char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
 289
 290         if (psmouse_sliced_command(parent, c))
 291                 return -1;
 292         if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
 293                 return -1;
 294         return 0;
 295 }
 296
 297 static inline int synaptics_is_pt_packet(unsigned char *buf)
 298 {
 299         return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
 300 }
 301
 302 static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
 303 {
 304         struct psmouse *child = serio_get_drvdata(ptport);
 305
 306         if (child && child->state == PSMOUSE_ACTIVATED) {
 307                 serio_interrupt(ptport, packet[1], 0);
 308                 serio_interrupt(ptport, packet[4], 0);
 309                 serio_interrupt(ptport, packet[5], 0);
 310                 if (child->pktsize == 4)
 311                         serio_interrupt(ptport, packet[2], 0);
 312         } else
 313                 serio_interrupt(ptport, packet[1], 0);
 314 }
 315
 316 static void synaptics_pt_activate(struct psmouse *psmouse)
 317 {
 318         struct serio *ptport = psmouse->ps2dev.serio->child;
 319         struct psmouse *child = serio_get_drvdata(ptport);
 320         struct synaptics_data *priv = psmouse->private;
 321
 322         /* adjust the touchpad to child's choice of protocol */
 323         if (child) {
 324                 if (child->pktsize == 4)
 325                         priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
 326                 else
 327                         priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
 328
 329                 if (synaptics_mode_cmd(psmouse, priv->mode))
 330                         printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
 331         }
 332 }
 333
 334 static void synaptics_pt_create(struct psmouse *psmouse)
 335 {
 336         struct serio *serio;
 337
 338         serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 339         if (!serio) {
 340                 printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
 341                 return;
 342         }
 343
 344         serio->id.type = SERIO_PS_PSTHRU;
 345         strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
 346         strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
 347         serio->write = synaptics_pt_write;
 348         serio->parent = psmouse->ps2dev.serio;
 349
 350         psmouse->pt_activate = synaptics_pt_activate;
 351
 352         printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
 353         serio_register_port(serio);
 354 }
 355
 356 /*****************************************************************************
 357  *      Functions to interpret the absolute mode packets
 358  ****************************************************************************/
 359
 360 static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
 361 {
 362         memset(hw, 0, sizeof(struct synaptics_hw_state));
 363
 364         if (SYN_MODEL_NEWABS(priv->model_id)) {
 365                 hw->x = (((buf[3] & 0x10) << 8) |
 366                          ((buf[1] & 0x0f) << 8) |
 367                          buf[4]);
 368                 hw->y = (((buf[3] & 0x20) << 7) |
 369                          ((buf[1] & 0xf0) << 4) |
 370                          buf[5]);
 371
 372                 hw->z = buf[2];
 373                 hw->w = (((buf[0] & 0x30) >> 2) |
 374                          ((buf[0] & 0x04) >> 1) |
 375                          ((buf[3] & 0x04) >> 2));
 376
 377                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 378                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 379
 380                 if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 381                         /*
 382                          * Clickpad's button is transmitted as middle button,
 383                          * however, since it is primary button, we will report
 384                          * it as BTN_LEFT.
 385                          */
 386                         hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 387
 388                 } else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 389                         hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 390                         if (hw->w == 2)
 391                                 hw->scroll = (signed char)(buf[1]);
 392                 }
 393
 394                 if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 395                         hw->up   = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
 396                         hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
 397                 }
 398
 399                 if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
 400                     ((buf[0] ^ buf[3]) & 0x02)) {
 401                         switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
 402                         default:
 403                                 /*
 404                                  * if nExtBtn is greater than 8 it should be
 405                                  * considered invalid and treated as 0
 406                                  */
 407                                 break;
 408                         case 8:
 409                                 hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
 410                                 hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
 411                         case 6:
 412                                 hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
 413                                 hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
 414                         case 4:
 415                                 hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
 416                                 hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
 417                         case 2:
 418                                 hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
 419                                 hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
 420                         }
 421                 }
 422         } else {
 423                 hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
 424                 hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
 425
 426                 hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
 427                 hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
 428
 429                 hw->left  = (buf[0] & 0x01) ? 1 : 0;
 430                 hw->right = (buf[0] & 0x02) ? 1 : 0;
 431         }
 432 }
 433
 434 /*
 435  *  called for each full received packet from the touchpad
 436  */
 437 static void synaptics_process_packet(struct psmouse *psmouse)
 438 {
 439         struct input_dev *dev = psmouse->dev;
 440         struct synaptics_data *priv = psmouse->private;
 441         struct synaptics_hw_state hw;
 442         int num_fingers;
 443         int finger_width;
 444         int i;
 445
 446         synaptics_parse_hw_state(psmouse->packet, priv, &hw);
 447
 448         if (hw.scroll) {
 449                 priv->scroll += hw.scroll;
 450
 451                 while (priv->scroll >= 4) {
 452                         input_report_key(dev, BTN_BACK, !hw.down);
 453                         input_sync(dev);
 454                         input_report_key(dev, BTN_BACK, hw.down);
 455                         input_sync(dev);
 456                         priv->scroll -= 4;
 457                 }
 458                 while (priv->scroll <= -4) {
 459                         input_report_key(dev, BTN_FORWARD, !hw.up);
 460                         input_sync(dev);
 461                         input_report_key(dev, BTN_FORWARD, hw.up);
 462                         input_sync(dev);
 463                         priv->scroll += 4;
 464                 }
 465                 return;
 466         }
 467
 468         if (hw.z > 0) {
 469                 num_fingers = 1;
 470                 finger_width = 5;
 471                 if (SYN_CAP_EXTENDED(priv->capabilities)) {
 472                         switch (hw.w) {
 473                         case 0 ... 1:
 474                                 if (SYN_CAP_MULTIFINGER(priv->capabilities))
 475                                         num_fingers = hw.w + 2;
 476                                 break;
 477                         case 2:
 478                                 if (SYN_MODEL_PEN(priv->model_id))
 479                                         ;   /* Nothing, treat a pen as a single finger */
 480                                 break;
 481                         case 4 ... 15:
 482                                 if (SYN_CAP_PALMDETECT(priv->capabilities))
 483                                         finger_width = hw.w;
 484                                 break;
 485                         }
 486                 }
 487         } else {
 488                 num_fingers = 0;
 489                 finger_width = 0;
 490         }
 491
 492         /* Post events
 493          * BTN_TOUCH has to be first as mousedev relies on it when doing
 494          * absolute -> relative conversion
 495          */
 496         if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
 497         if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
 498
 499         if (hw.z > 0) {
 500                 input_report_abs(dev, ABS_X, hw.x);
 501                 input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
 502         }
 503         input_report_abs(dev, ABS_PRESSURE, hw.z);
 504
 505         if (SYN_CAP_PALMDETECT(priv->capabilities))
 506                 input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
 507
 508         input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
 509         input_report_key(dev, BTN_LEFT, hw.left);
 510         input_report_key(dev, BTN_RIGHT, hw.right);
 511
 512         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 513                 input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
 514                 input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
 515         }
 516
 517         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 518                 input_report_key(dev, BTN_MIDDLE, hw.middle);
 519
 520         if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
 521                 input_report_key(dev, BTN_FORWARD, hw.up);
 522                 input_report_key(dev, BTN_BACK, hw.down);
 523         }
 524
 525         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 526                 input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
 527
 528         input_sync(dev);
 529 }
 530
 531 static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
 532 {
 533         static const unsigned char newabs_mask[]        = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
 534         static const unsigned char newabs_rel_mask[]    = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
 535         static const unsigned char newabs_rslt[]        = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
 536         static const unsigned char oldabs_mask[]        = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
 537         static const unsigned char oldabs_rslt[]        = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
 538
 539         if (idx < 0 || idx > 4)
 540                 return 0;
 541
 542         switch (pkt_type) {
 543
 544         case SYN_NEWABS:
 545         case SYN_NEWABS_RELAXED:
 546                 return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
 547
 548         case SYN_NEWABS_STRICT:
 549                 return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
 550
 551         case SYN_OLDABS:
 552                 return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
 553
 554         default:
 555                 printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
 556                 return 0;
 557         }
 558 }
 559
 560 static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
 561 {
 562         int i;
 563
 564         for (i = 0; i < 5; i++)
 565                 if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
 566                         printk(KERN_INFO "synaptics: using relaxed packet validation\n");
 567                         return SYN_NEWABS_RELAXED;
 568                 }
 569
 570         return SYN_NEWABS_STRICT;
 571 }
 572
 573 static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
 574 {
 575         struct synaptics_data *priv = psmouse->private;
 576
 577         if (psmouse->pktcnt >= 6) { /* Full packet received */
 578                 if (unlikely(priv->pkt_type == SYN_NEWABS))
 579                         priv->pkt_type = synaptics_detect_pkt_type(psmouse);
 580
 581                 if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
 582                         if (psmouse->ps2dev.serio->child)
 583                                 synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
 584                 } else
 585                         synaptics_process_packet(psmouse);
 586
 587                 return PSMOUSE_FULL_PACKET;
 588         }
 589
 590         return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
 591                 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
 592 }
 593
 594 /*****************************************************************************
 595  *      Driver initialization/cleanup functions
 596  ****************************************************************************/
 597 static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 598 {
 599         int i;
 600
 601         __set_bit(EV_ABS, dev->evbit);
 602         input_set_abs_params(dev, ABS_X,
 603                              XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
 604         input_set_abs_params(dev, ABS_Y,
 605                              YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
 606         input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
 607
 608         if (SYN_CAP_PALMDETECT(priv->capabilities))
 609                 input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
 610
 611         __set_bit(EV_KEY, dev->evbit);
 612         __set_bit(BTN_TOUCH, dev->keybit);
 613         __set_bit(BTN_TOOL_FINGER, dev->keybit);
 614         __set_bit(BTN_LEFT, dev->keybit);
 615         __set_bit(BTN_RIGHT, dev->keybit);
 616
 617         if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
 618                 __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
 619                 __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
 620         }
 621
 622         if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
 623                 __set_bit(BTN_MIDDLE, dev->keybit);
 624
 625         if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
 626             SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
 627                 __set_bit(BTN_FORWARD, dev->keybit);
 628                 __set_bit(BTN_BACK, dev->keybit);
 629         }
 630
 631         for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
 632                 __set_bit(BTN_0 + i, dev->keybit);
 633
 634         __clear_bit(EV_REL, dev->evbit);
 635         __clear_bit(REL_X, dev->relbit);
 636         __clear_bit(REL_Y, dev->relbit);
 637
 638         input_abs_set_res(dev, ABS_X, priv->x_res);
 639         input_abs_set_res(dev, ABS_Y, priv->y_res);
 640
 641         if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
 642                 /* Clickpads report only left button */
 643                 __clear_bit(BTN_RIGHT, dev->keybit);
 644                 __clear_bit(BTN_MIDDLE, dev->keybit);
 645         }
 646 }
 647
 648 static void synaptics_disconnect(struct psmouse *psmouse)
 649 {
 650         synaptics_reset(psmouse);
 651         kfree(psmouse->private);
 652         psmouse->private = NULL;
 653 }
 654
 655 static int synaptics_reconnect(struct psmouse *psmouse)
 656 {
 657         struct synaptics_data *priv = psmouse->private;
 658         struct synaptics_data old_priv = *priv;
 659
 660         psmouse_reset(psmouse);
 661
 662         if (synaptics_detect(psmouse, 0))
 663                 return -1;
 664
 665         if (synaptics_query_hardware(psmouse)) {
 666                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 667                 return -1;
 668         }
 669
 670         if (old_priv.identity != priv->identity ||
 671             old_priv.model_id != priv->model_id ||
 672             old_priv.capabilities != priv->capabilities ||
 673             old_priv.ext_cap != priv->ext_cap)
 674                 return -1;
 675
 676         if (synaptics_set_absolute_mode(psmouse)) {
 677                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 678                 return -1;
 679         }
 680
 681         return 0;
 682 }
 683
 684 static bool impaired_toshiba_kbc;
 685
 686 static const struct dmi_system_id __initconst toshiba_dmi_table[] = {
 687 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
 688         {
 689                 /* Toshiba Satellite */
 690                 .matches = {
 691                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 692                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
 693                 },
 694         },
 695         {
 696                 /* Toshiba Dynabook */
 697                 .matches = {
 698                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 699                         DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
 700                 },
 701         },
 702         {
 703                 /* Toshiba Portege M300 */
 704                 .matches = {
 705                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 706                         DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
 707                 },
 708
 709         },
 710         {
 711                 /* Toshiba Portege M300 */
 712                 .matches = {
 713                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 714                         DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
 715                         DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
 716                 },
 717
 718         },
 719         { }
 720 #endif
 721 };
 722
 723 void __init synaptics_module_init(void)
 724 {
 725         impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
 726 }
 727
 728 int synaptics_init(struct psmouse *psmouse)
 729 {
 730         struct synaptics_data *priv;
 731
 732         psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 733         if (!priv)
 734                 return -1;
 735
 736         psmouse_reset(psmouse);
 737
 738         if (synaptics_query_hardware(psmouse)) {
 739                 printk(KERN_ERR "Unable to query Synaptics hardware.\n");
 740                 goto init_fail;
 741         }
 742
 743         if (synaptics_set_absolute_mode(psmouse)) {
 744                 printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
 745                 goto init_fail;
 746         }
 747
 748         priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
 749
 750         printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
 751                 SYN_ID_MODEL(priv->identity),
 752                 SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
 753                 priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c);
 754
 755         set_input_params(psmouse->dev, priv);
 756
 757         /*
 758          * Encode touchpad model so that it can be used to set
 759          * input device->id.version and be visible to userspace.
 760          * Because version is __u16 we have to drop something.
 761          * Hardware info bits seem to be good candidates as they
 762          * are documented to be for Synaptics corp. internal use.
 763          */
 764         psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
 765                           (priv->model_id & 0x000000ff);
 766
 767         psmouse->protocol_handler = synaptics_process_byte;
 768         psmouse->set_rate = synaptics_set_rate;
 769         psmouse->disconnect = synaptics_disconnect;
 770         psmouse->reconnect = synaptics_reconnect;
 771         psmouse->cleanup = synaptics_reset;
 772         psmouse->pktsize = 6;
 773         /* Synaptics can usually stay in sync without extra help */
 774         psmouse->resync_time = 0;
 775
 776         if (SYN_CAP_PASS_THROUGH(priv->capabilities))
 777                 synaptics_pt_create(psmouse);
 778
 779         /*
 780          * Toshiba's KBC seems to have trouble handling data from
 781          * Synaptics as full rate, switch to lower rate which is roughly
 782          * thye same as rate of standard PS/2 mouse.
 783          */
 784         if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
 785                 printk(KERN_INFO "synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
 786                         dmi_get_system_info(DMI_PRODUCT_NAME));
 787                 psmouse->rate = 40;
 788         }
 789
 790         return 0;
 791
 792  init_fail:
 793         kfree(priv);
 794         return -1;
 795 }
 796
 797 bool synaptics_supported(void)
 798 {
 799         return true;
 800 }
 801
 802 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
 803
 804 void __init synaptics_module_init(void)
 805 {
 806 }
 807
 808 int synaptics_init(struct psmouse *psmouse)
 809 {
 810         return -ENOSYS;
 811 }
 812
 813 bool synaptics_supported(void)
 814 {
 815         return false;
 816 }
 817
 818 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
 819