sys/dev/usb/input/wsp.c

   1 /*-
   2  * Copyright (c) 2012 Huang Wen Hui
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/malloc.h>
  34 #include <sys/module.h>
  35 #include <sys/lock.h>
  36 #include <sys/mutex.h>
  37 #include <sys/bus.h>
  38 #include <sys/conf.h>
  39 #include <sys/fcntl.h>
  40 #include <sys/file.h>
  41 #include <sys/selinfo.h>
  42 #include <sys/poll.h>
  43 #include <sys/sysctl.h>
  44
  45 #include <dev/usb/usb.h>
  46 #include <dev/usb/usbdi.h>
  47 #include <dev/usb/usbdi_util.h>
  48 #include <dev/usb/usbhid.h>
  49
  50 #include "usbdevs.h"
  51
  52 #define USB_DEBUG_VAR wsp_debug
  53 #include <dev/usb/usb_debug.h>
  54
  55 #include <sys/mouse.h>
  56
  57 #define WSP_DRIVER_NAME "wsp"
  58 #define WSP_BUFFER_MAX  1024
  59
  60 #define WSP_CLAMP(x,low,high) do {              \
  61         if ((x) < (low))                        \
  62                 (x) = (low);                    \
  63         else if ((x) > (high))                  \
  64                 (x) = (high);                   \
  65 } while (0)
  66
  67 /* Tunables */
  68 static  SYSCTL_NODE(_hw_usb, OID_AUTO, wsp, CTLFLAG_RW, 0, "USB wsp");
  69
  70 #ifdef USB_DEBUG
  71 enum wsp_log_level {
  72         WSP_LLEVEL_DISABLED = 0,
  73         WSP_LLEVEL_ERROR,
  74         WSP_LLEVEL_DEBUG,               /* for troubleshooting */
  75         WSP_LLEVEL_INFO,                /* for diagnostics */
  76 };
  77 static int wsp_debug = WSP_LLEVEL_ERROR;/* the default is to only log errors */
  78
  79 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, debug, CTLFLAG_RW,
  80     &wsp_debug, WSP_LLEVEL_ERROR, "WSP debug level");
  81 #endif                                  /* USB_DEBUG */
  82
  83 static struct wsp_tuning {
  84         int     scale_factor;
  85         int     z_factor;
  86         int     pressure_touch_threshold;
  87         int     pressure_untouch_threshold;
  88         int     pressure_tap_threshold;
  89         int     scr_hor_threshold;
  90 }
  91         wsp_tuning =
  92 {
  93         .scale_factor = 12,
  94         .z_factor = 5,
  95         .pressure_touch_threshold = 50,
  96         .pressure_untouch_threshold = 10,
  97         .pressure_tap_threshold = 120,
  98         .scr_hor_threshold = 20,
  99 };
 100
 101 static void
 102 wsp_runing_rangecheck(struct wsp_tuning *ptun)
 103 {
 104         WSP_CLAMP(ptun->scale_factor, 1, 63);
 105         WSP_CLAMP(ptun->z_factor, 1, 63);
 106         WSP_CLAMP(ptun->pressure_touch_threshold, 1, 255);
 107         WSP_CLAMP(ptun->pressure_untouch_threshold, 1, 255);
 108         WSP_CLAMP(ptun->pressure_tap_threshold, 1, 255);
 109         WSP_CLAMP(ptun->scr_hor_threshold, 1, 255);
 110 }
 111
 112 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, scale_factor, CTLFLAG_RW,
 113     &wsp_tuning.scale_factor, 0, "movement scale factor");
 114 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, z_factor, CTLFLAG_RW,
 115     &wsp_tuning.z_factor, 0, "Z-axis scale factor");
 116 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, pressure_touch_threshold, CTLFLAG_RW,
 117     &wsp_tuning.pressure_touch_threshold, 0, "touch pressure threshold");
 118 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, pressure_untouch_threshold, CTLFLAG_RW,
 119     &wsp_tuning.pressure_untouch_threshold, 0, "untouch pressure threshold");
 120 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, pressure_tap_threshold, CTLFLAG_RW,
 121     &wsp_tuning.pressure_tap_threshold, 0, "tap pressure threshold");
 122 SYSCTL_INT(_hw_usb_wsp, OID_AUTO, scr_hor_threshold, CTLFLAG_RW,
 123     &wsp_tuning.scr_hor_threshold, 0, "horizontal scrolling threshold");
 124
 125 /*
 126  * Some tables, structures, definitions and constant values for the
 127  * touchpad protocol has been copied from Linux's
 128  * "drivers/input/mouse/bcm5974.c" which has the following copyright
 129  * holders under GPLv2. All device specific code in this driver has
 130  * been written from scratch. The decoding algorithm is based on
 131  * output from FreeBSD's usbdump.
 132  *
 133  * Copyright (C) 2008      Henrik Rydberg (rydberg@euromail.se)
 134  * Copyright (C) 2008      Scott Shawcroft (scott.shawcroft@gmail.com)
 135  * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
 136  * Copyright (C) 2005      Johannes Berg (johannes@sipsolutions.net)
 137  * Copyright (C) 2005      Stelian Pop (stelian@popies.net)
 138  * Copyright (C) 2005      Frank Arnold (frank@scirocco-5v-turbo.de)
 139  * Copyright (C) 2005      Peter Osterlund (petero2@telia.com)
 140  * Copyright (C) 2005      Michael Hanselmann (linux-kernel@hansmi.ch)
 141  * Copyright (C) 2006      Nicolas Boichat (nicolas@boichat.ch)
 142  */
 143
 144 /* button data structure */
 145 struct bt_data {
 146         uint8_t unknown1;               /* constant */
 147         uint8_t button;                 /* left button */
 148         uint8_t rel_x;                  /* relative x coordinate */
 149         uint8_t rel_y;                  /* relative y coordinate */
 150 } __packed;
 151
 152 /* trackpad header types */
 153 enum tp_type {
 154         TYPE1,                  /* plain trackpad */
 155         TYPE2,                  /* button integrated in trackpad */
 156         TYPE3,                  /* additional header fields since June 2013 */
 157         TYPE4                   /* additional header field for pressure data */
 158 };
 159
 160 /* trackpad finger data offsets, le16-aligned */
 161 #define FINGER_TYPE1            (13 * 2)
 162 #define FINGER_TYPE2            (15 * 2)
 163 #define FINGER_TYPE3            (19 * 2)
 164 #define FINGER_TYPE4            (23 * 2)
 165
 166 /* trackpad button data offsets */
 167 #define BUTTON_TYPE2            15
 168 #define BUTTON_TYPE3            23
 169 #define BUTTON_TYPE4            31
 170
 171 /* list of device capability bits */
 172 #define HAS_INTEGRATED_BUTTON   1
 173
 174 /* trackpad finger data block size */
 175 #define FSIZE_TYPE1             (14 * 2)
 176 #define FSIZE_TYPE2             (14 * 2)
 177 #define FSIZE_TYPE3             (14 * 2)
 178 #define FSIZE_TYPE4             (15 * 2)
 179
 180 /* trackpad finger header - little endian */
 181 struct tp_header {
 182         uint8_t flag;
 183         uint8_t sn0;
 184         uint16_t wFixed0;
 185         uint32_t dwSn1;
 186         uint32_t dwFixed1;
 187         uint16_t wLength;
 188         uint8_t nfinger;
 189         uint8_t ibt;
 190         int16_t wUnknown[6];
 191         uint8_t q1;
 192         uint8_t q2;
 193 } __packed;
 194
 195 /* trackpad finger structure - little endian */
 196 struct tp_finger {
 197         int16_t origin;                 /* zero when switching track finger */
 198         int16_t abs_x;                  /* absolute x coodinate */
 199         int16_t abs_y;                  /* absolute y coodinate */
 200         int16_t rel_x;                  /* relative x coodinate */
 201         int16_t rel_y;                  /* relative y coodinate */
 202         int16_t tool_major;             /* tool area, major axis */
 203         int16_t tool_minor;             /* tool area, minor axis */
 204         int16_t orientation;            /* 16384 when point, else 15 bit angle */
 205         int16_t touch_major;            /* touch area, major axis */
 206         int16_t touch_minor;            /* touch area, minor axis */
 207         int16_t unused[2];              /* zeros */
 208         int16_t pressure;               /* pressure on forcetouch touchpad */
 209         int16_t multi;                  /* one finger: varies, more fingers:
 210                                          * constant */
 211 } __packed;
 212
 213 /* trackpad finger data size, empirically at least ten fingers */
 214 #define MAX_FINGERS             16
 215 #define SIZEOF_FINGER           sizeof(struct tp_finger)
 216 #define SIZEOF_ALL_FINGERS      (MAX_FINGERS * SIZEOF_FINGER)
 217
 218 #if (WSP_BUFFER_MAX < ((MAX_FINGERS * FSIZE_TYPE4) + FINGER_TYPE4))
 219 #error "WSP_BUFFER_MAX is too small"
 220 #endif
 221
 222 enum {
 223         WSP_FLAG_WELLSPRING1,
 224         WSP_FLAG_WELLSPRING2,
 225         WSP_FLAG_WELLSPRING3,
 226         WSP_FLAG_WELLSPRING4,
 227         WSP_FLAG_WELLSPRING4A,
 228         WSP_FLAG_WELLSPRING5,
 229         WSP_FLAG_WELLSPRING6A,
 230         WSP_FLAG_WELLSPRING6,
 231         WSP_FLAG_WELLSPRING5A,
 232         WSP_FLAG_WELLSPRING7,
 233         WSP_FLAG_WELLSPRING7A,
 234         WSP_FLAG_WELLSPRING8,
 235         WSP_FLAG_WELLSPRING9,
 236         WSP_FLAG_MAX,
 237 };
 238
 239 /* device-specific configuration */
 240 struct wsp_dev_params {
 241         uint8_t caps;                   /* device capability bitmask */
 242         uint8_t tp_type;                /* type of trackpad interface */
 243         uint8_t tp_button;              /* offset to button data */
 244         uint8_t tp_offset;              /* offset to trackpad finger data */
 245         uint8_t tp_fsize;               /* bytes in single finger block */
 246         uint8_t tp_delta;               /* offset from header to finger struct */
 247         uint8_t iface_index;
 248         uint8_t um_size;                /* usb control message length */
 249         uint8_t um_req_val;             /* usb control message value */
 250         uint8_t um_req_idx;             /* usb control message index */
 251         uint8_t um_switch_idx;          /* usb control message mode switch index */
 252         uint8_t um_switch_on;           /* usb control message mode switch on */
 253         uint8_t um_switch_off;          /* usb control message mode switch off */
 254 };
 255
 256 static const struct wsp_dev_params wsp_dev_params[WSP_FLAG_MAX] = {
 257         [WSP_FLAG_WELLSPRING1] = {
 258                 .caps = 0,
 259                 .tp_type = TYPE1,
 260                 .tp_button = 0,
 261                 .tp_offset = FINGER_TYPE1,
 262                 .tp_fsize = FSIZE_TYPE1,
 263                 .tp_delta = 0,
 264                 .iface_index = 0,
 265                 .um_size = 8,
 266                 .um_req_val = 0x03,
 267                 .um_req_idx = 0x00,
 268                 .um_switch_idx = 0,
 269                 .um_switch_on = 0x01,
 270                 .um_switch_off = 0x08,
 271         },
 272         [WSP_FLAG_WELLSPRING2] = {
 273                 .caps = 0,
 274                 .tp_type = TYPE1,
 275                 .tp_button = 0,
 276                 .tp_offset = FINGER_TYPE1,
 277                 .tp_fsize = FSIZE_TYPE1,
 278                 .tp_delta = 0,
 279                 .iface_index = 0,
 280                 .um_size = 8,
 281                 .um_req_val = 0x03,
 282                 .um_req_idx = 0x00,
 283                 .um_switch_idx = 0,
 284                 .um_switch_on = 0x01,
 285                 .um_switch_off = 0x08,
 286         },
 287         [WSP_FLAG_WELLSPRING3] = {
 288                 .caps = HAS_INTEGRATED_BUTTON,
 289                 .tp_type = TYPE2,
 290                 .tp_button = BUTTON_TYPE2,
 291                 .tp_offset = FINGER_TYPE2,
 292                 .tp_fsize = FSIZE_TYPE2,
 293                 .tp_delta = 0,
 294                 .iface_index = 0,
 295                 .um_size = 8,
 296                 .um_req_val = 0x03,
 297                 .um_req_idx = 0x00,
 298                 .um_switch_idx = 0,
 299                 .um_switch_on = 0x01,
 300                 .um_switch_off = 0x08,
 301         },
 302         [WSP_FLAG_WELLSPRING4] = {
 303                 .caps = HAS_INTEGRATED_BUTTON,
 304                 .tp_type = TYPE2,
 305                 .tp_button = BUTTON_TYPE2,
 306                 .tp_offset = FINGER_TYPE2,
 307                 .tp_fsize = FSIZE_TYPE2,
 308                 .tp_delta = 0,
 309                 .iface_index = 0,
 310                 .um_size = 8,
 311                 .um_req_val = 0x03,
 312                 .um_req_idx = 0x00,
 313                 .um_switch_idx = 0,
 314                 .um_switch_on = 0x01,
 315                 .um_switch_off = 0x08,
 316         },
 317         [WSP_FLAG_WELLSPRING4A] = {
 318                 .caps = HAS_INTEGRATED_BUTTON,
 319                 .tp_type = TYPE2,
 320                 .tp_button = BUTTON_TYPE2,
 321                 .tp_offset = FINGER_TYPE2,
 322                 .tp_fsize = FSIZE_TYPE2,
 323                 .tp_delta = 0,
 324                 .iface_index = 0,
 325                 .um_size = 8,
 326                 .um_req_val = 0x03,
 327                 .um_req_idx = 0x00,
 328                 .um_switch_idx = 0,
 329                 .um_switch_on = 0x01,
 330                 .um_switch_off = 0x08,
 331         },
 332         [WSP_FLAG_WELLSPRING5] = {
 333                 .caps = HAS_INTEGRATED_BUTTON,
 334                 .tp_type = TYPE2,
 335                 .tp_button = BUTTON_TYPE2,
 336                 .tp_offset = FINGER_TYPE2,
 337                 .tp_fsize = FSIZE_TYPE2,
 338                 .tp_delta = 0,
 339                 .iface_index = 0,
 340                 .um_size = 8,
 341                 .um_req_val = 0x03,
 342                 .um_req_idx = 0x00,
 343                 .um_switch_idx = 0,
 344                 .um_switch_on = 0x01,
 345                 .um_switch_off = 0x08,
 346         },
 347         [WSP_FLAG_WELLSPRING6] = {
 348                 .caps = HAS_INTEGRATED_BUTTON,
 349                 .tp_type = TYPE2,
 350                 .tp_button = BUTTON_TYPE2,
 351                 .tp_offset = FINGER_TYPE2,
 352                 .tp_fsize = FSIZE_TYPE2,
 353                 .tp_delta = 0,
 354                 .iface_index = 0,
 355                 .um_size = 8,
 356                 .um_req_val = 0x03,
 357                 .um_req_idx = 0x00,
 358                 .um_switch_idx = 0,
 359                 .um_switch_on = 0x01,
 360                 .um_switch_off = 0x08,
 361         },
 362         [WSP_FLAG_WELLSPRING5A] = {
 363                 .caps = HAS_INTEGRATED_BUTTON,
 364                 .tp_type = TYPE2,
 365                 .tp_button = BUTTON_TYPE2,
 366                 .tp_offset = FINGER_TYPE2,
 367                 .tp_fsize = FSIZE_TYPE2,
 368                 .tp_delta = 0,
 369                 .iface_index = 0,
 370                 .um_size = 8,
 371                 .um_req_val = 0x03,
 372                 .um_req_idx = 0x00,
 373                 .um_switch_idx = 0,
 374                 .um_switch_on = 0x01,
 375                 .um_switch_off = 0x08,
 376         },
 377         [WSP_FLAG_WELLSPRING6A] = {
 378                 .caps = HAS_INTEGRATED_BUTTON,
 379                 .tp_type = TYPE2,
 380                 .tp_button = BUTTON_TYPE2,
 381                 .tp_offset = FINGER_TYPE2,
 382                 .tp_fsize = FSIZE_TYPE2,
 383                 .tp_delta = 0,
 384                 .um_size = 8,
 385                 .um_req_val = 0x03,
 386                 .um_req_idx = 0x00,
 387                 .um_switch_idx = 0,
 388                 .um_switch_on = 0x01,
 389                 .um_switch_off = 0x08,
 390         },
 391         [WSP_FLAG_WELLSPRING7] = {
 392                 .caps = HAS_INTEGRATED_BUTTON,
 393                 .tp_type = TYPE2,
 394                 .tp_button = BUTTON_TYPE2,
 395                 .tp_offset = FINGER_TYPE2,
 396                 .tp_fsize = FSIZE_TYPE2,
 397                 .tp_delta = 0,
 398                 .iface_index = 0,
 399                 .um_size = 8,
 400                 .um_req_val = 0x03,
 401                 .um_req_idx = 0x00,
 402                 .um_switch_idx = 0,
 403                 .um_switch_on = 0x01,
 404                 .um_switch_off = 0x08,
 405         },
 406         [WSP_FLAG_WELLSPRING7A] = {
 407                 .caps = HAS_INTEGRATED_BUTTON,
 408                 .tp_type = TYPE2,
 409                 .tp_button = BUTTON_TYPE2,
 410                 .tp_offset = FINGER_TYPE2,
 411                 .tp_fsize = FSIZE_TYPE2,
 412                 .tp_delta = 0,
 413                 .iface_index = 0,
 414                 .um_size = 8,
 415                 .um_req_val = 0x03,
 416                 .um_req_idx = 0x00,
 417                 .um_switch_idx = 0,
 418                 .um_switch_on = 0x01,
 419                 .um_switch_off = 0x08,
 420         },
 421         [WSP_FLAG_WELLSPRING8] = {
 422                 .caps = HAS_INTEGRATED_BUTTON,
 423                 .tp_type = TYPE3,
 424                 .tp_button = BUTTON_TYPE3,
 425                 .tp_offset = FINGER_TYPE3,
 426                 .tp_fsize = FSIZE_TYPE3,
 427                 .tp_delta = 0,
 428                 .iface_index = 0,
 429                 .um_size = 8,
 430                 .um_req_val = 0x03,
 431                 .um_req_idx = 0x00,
 432                 .um_switch_idx = 0,
 433                 .um_switch_on = 0x01,
 434                 .um_switch_off = 0x08,
 435         },
 436         [WSP_FLAG_WELLSPRING9] = {
 437                 .caps = HAS_INTEGRATED_BUTTON,
 438                 .tp_type = TYPE4,
 439                 .tp_button = BUTTON_TYPE4,
 440                 .tp_offset = FINGER_TYPE4,
 441                 .tp_fsize = FSIZE_TYPE4,
 442                 .tp_delta = 2,
 443                 .iface_index = 2,
 444                 .um_size = 2,
 445                 .um_req_val = 0x03,
 446                 .um_req_idx = 0x02,
 447                 .um_switch_idx = 1,
 448                 .um_switch_on = 0x01,
 449                 .um_switch_off = 0x00,
 450         },
 451 };
 452
 453 #define WSP_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
 454
 455 static const STRUCT_USB_HOST_ID wsp_devs[] = {
 456         /* MacbookAir1.1 */
 457         WSP_DEV(APPLE, WELLSPRING_ANSI, WSP_FLAG_WELLSPRING1),
 458         WSP_DEV(APPLE, WELLSPRING_ISO, WSP_FLAG_WELLSPRING1),
 459         WSP_DEV(APPLE, WELLSPRING_JIS, WSP_FLAG_WELLSPRING1),
 460
 461         /* MacbookProPenryn, aka wellspring2 */
 462         WSP_DEV(APPLE, WELLSPRING2_ANSI, WSP_FLAG_WELLSPRING2),
 463         WSP_DEV(APPLE, WELLSPRING2_ISO, WSP_FLAG_WELLSPRING2),
 464         WSP_DEV(APPLE, WELLSPRING2_JIS, WSP_FLAG_WELLSPRING2),
 465
 466         /* Macbook5,1 (unibody), aka wellspring3 */
 467         WSP_DEV(APPLE, WELLSPRING3_ANSI, WSP_FLAG_WELLSPRING3),
 468         WSP_DEV(APPLE, WELLSPRING3_ISO, WSP_FLAG_WELLSPRING3),
 469         WSP_DEV(APPLE, WELLSPRING3_JIS, WSP_FLAG_WELLSPRING3),
 470
 471         /* MacbookAir3,2 (unibody), aka wellspring4 */
 472         WSP_DEV(APPLE, WELLSPRING4_ANSI, WSP_FLAG_WELLSPRING4),
 473         WSP_DEV(APPLE, WELLSPRING4_ISO, WSP_FLAG_WELLSPRING4),
 474         WSP_DEV(APPLE, WELLSPRING4_JIS, WSP_FLAG_WELLSPRING4),
 475
 476         /* MacbookAir3,1 (unibody), aka wellspring4 */
 477         WSP_DEV(APPLE, WELLSPRING4A_ANSI, WSP_FLAG_WELLSPRING4A),
 478         WSP_DEV(APPLE, WELLSPRING4A_ISO, WSP_FLAG_WELLSPRING4A),
 479         WSP_DEV(APPLE, WELLSPRING4A_JIS, WSP_FLAG_WELLSPRING4A),
 480
 481         /* Macbook8 (unibody, March 2011) */
 482         WSP_DEV(APPLE, WELLSPRING5_ANSI, WSP_FLAG_WELLSPRING5),
 483         WSP_DEV(APPLE, WELLSPRING5_ISO, WSP_FLAG_WELLSPRING5),
 484         WSP_DEV(APPLE, WELLSPRING5_JIS, WSP_FLAG_WELLSPRING5),
 485
 486         /* MacbookAir4,1 (unibody, July 2011) */
 487         WSP_DEV(APPLE, WELLSPRING6A_ANSI, WSP_FLAG_WELLSPRING6A),
 488         WSP_DEV(APPLE, WELLSPRING6A_ISO, WSP_FLAG_WELLSPRING6A),
 489         WSP_DEV(APPLE, WELLSPRING6A_JIS, WSP_FLAG_WELLSPRING6A),
 490
 491         /* MacbookAir4,2 (unibody, July 2011) */
 492         WSP_DEV(APPLE, WELLSPRING6_ANSI, WSP_FLAG_WELLSPRING6),
 493         WSP_DEV(APPLE, WELLSPRING6_ISO, WSP_FLAG_WELLSPRING6),
 494         WSP_DEV(APPLE, WELLSPRING6_JIS, WSP_FLAG_WELLSPRING6),
 495
 496         /* Macbook8,2 (unibody) */
 497         WSP_DEV(APPLE, WELLSPRING5A_ANSI, WSP_FLAG_WELLSPRING5A),
 498         WSP_DEV(APPLE, WELLSPRING5A_ISO, WSP_FLAG_WELLSPRING5A),
 499         WSP_DEV(APPLE, WELLSPRING5A_JIS, WSP_FLAG_WELLSPRING5A),
 500
 501         /* MacbookPro10,1 (unibody, June 2012) */
 502         /* MacbookPro11,1-3 (unibody, June 2013) */
 503         WSP_DEV(APPLE, WELLSPRING7_ANSI, WSP_FLAG_WELLSPRING7),
 504         WSP_DEV(APPLE, WELLSPRING7_ISO, WSP_FLAG_WELLSPRING7),
 505         WSP_DEV(APPLE, WELLSPRING7_JIS, WSP_FLAG_WELLSPRING7),
 506
 507         /* MacbookPro10,2 (unibody, October 2012) */
 508         WSP_DEV(APPLE, WELLSPRING7A_ANSI, WSP_FLAG_WELLSPRING7A),
 509         WSP_DEV(APPLE, WELLSPRING7A_ISO, WSP_FLAG_WELLSPRING7A),
 510         WSP_DEV(APPLE, WELLSPRING7A_JIS, WSP_FLAG_WELLSPRING7A),
 511
 512         /* MacbookAir6,2 (unibody, June 2013) */
 513         WSP_DEV(APPLE, WELLSPRING8_ANSI, WSP_FLAG_WELLSPRING8),
 514         WSP_DEV(APPLE, WELLSPRING8_ISO, WSP_FLAG_WELLSPRING8),
 515         WSP_DEV(APPLE, WELLSPRING8_JIS, WSP_FLAG_WELLSPRING8),
 516
 517         /* MacbookPro12,1 MacbookPro11,4 */
 518         WSP_DEV(APPLE, WELLSPRING9_ANSI, WSP_FLAG_WELLSPRING9),
 519         WSP_DEV(APPLE, WELLSPRING9_ISO, WSP_FLAG_WELLSPRING9),
 520         WSP_DEV(APPLE, WELLSPRING9_JIS, WSP_FLAG_WELLSPRING9),
 521 };
 522
 523 #define WSP_FIFO_BUF_SIZE        8      /* bytes */
 524 #define WSP_FIFO_QUEUE_MAXLEN   50      /* units */
 525
 526 enum {
 527         WSP_INTR_DT,
 528         WSP_N_TRANSFER,
 529 };
 530
 531 struct wsp_softc {
 532         struct usb_device *sc_usb_device;
 533         struct mtx sc_mutex;            /* for synchronization */
 534         struct usb_xfer *sc_xfer[WSP_N_TRANSFER];
 535         struct usb_fifo_sc sc_fifo;
 536
 537         const struct wsp_dev_params *sc_params; /* device configuration */
 538
 539         mousehw_t sc_hw;
 540         mousemode_t sc_mode;
 541         u_int   sc_pollrate;
 542         mousestatus_t sc_status;
 543         u_int   sc_state;
 544 #define WSP_ENABLED            0x01
 545
 546         struct tp_finger *index[MAX_FINGERS];   /* finger index data */
 547         int16_t pos_x[MAX_FINGERS];     /* position array */
 548         int16_t pos_y[MAX_FINGERS];     /* position array */
 549         u_int   sc_touch;               /* touch status */
 550 #define WSP_UNTOUCH             0x00
 551 #define WSP_FIRST_TOUCH         0x01
 552 #define WSP_SECOND_TOUCH        0x02
 553 #define WSP_TOUCHING            0x04
 554         int16_t pre_pos_x;              /* previous position array */
 555         int16_t pre_pos_y;              /* previous position array */
 556         int     dx_sum;                 /* x axis cumulative movement */
 557         int     dy_sum;                 /* y axis cumulative movement */
 558         int     dz_sum;                 /* z axis cumulative movement */
 559         int     dz_count;
 560 #define WSP_DZ_MAX_COUNT        32
 561         int     dt_sum;                 /* T-axis cumulative movement */
 562         int     rdx;                    /* x axis remainder of divide by scale_factor */
 563         int     rdy;                    /* y axis remainder of divide by scale_factor */
 564         int     rdz;                    /* z axis remainder of divide by scale_factor */
 565         int     tp_datalen;
 566         uint8_t o_ntouch;               /* old touch finger status */
 567         uint8_t finger;                 /* 0 or 1 *, check which finger moving */
 568         uint16_t intr_count;
 569 #define WSP_TAP_THRESHOLD       3
 570 #define WSP_TAP_MAX_COUNT       20
 571         int     distance;               /* the distance of 2 fingers */
 572 #define MAX_DISTANCE            2500    /* the max allowed distance */
 573         uint8_t ibtn;                   /* button status in tapping */
 574         uint8_t ntaps;                  /* finger status in tapping */
 575         uint8_t scr_mode;               /* scroll status in movement */
 576 #define WSP_SCR_NONE            0
 577 #define WSP_SCR_VER             1
 578 #define WSP_SCR_HOR             2
 579         uint8_t tp_data[WSP_BUFFER_MAX] __aligned(4);           /* trackpad transferred data */
 580 };
 581
 582 /*
 583  * function prototypes
 584  */
 585 static usb_fifo_cmd_t wsp_start_read;
 586 static usb_fifo_cmd_t wsp_stop_read;
 587 static usb_fifo_open_t wsp_open;
 588 static usb_fifo_close_t wsp_close;
 589 static usb_fifo_ioctl_t wsp_ioctl;
 590
 591 static struct usb_fifo_methods wsp_fifo_methods = {
 592         .f_open = &wsp_open,
 593         .f_close = &wsp_close,
 594         .f_ioctl = &wsp_ioctl,
 595         .f_start_read = &wsp_start_read,
 596         .f_stop_read = &wsp_stop_read,
 597         .basename[0] = WSP_DRIVER_NAME,
 598 };
 599
 600 /* device initialization and shutdown */
 601 static int wsp_enable(struct wsp_softc *sc);
 602 static void wsp_disable(struct wsp_softc *sc);
 603
 604 /* updating fifo */
 605 static void wsp_reset_buf(struct wsp_softc *sc);
 606 static void wsp_add_to_queue(struct wsp_softc *, int, int, int, uint32_t);
 607
 608 /* Device methods. */
 609 static device_probe_t wsp_probe;
 610 static device_attach_t wsp_attach;
 611 static device_detach_t wsp_detach;
 612 static usb_callback_t wsp_intr_callback;
 613
 614 static const struct usb_config wsp_config[WSP_N_TRANSFER] = {
 615         [WSP_INTR_DT] = {
 616                 .type = UE_INTERRUPT,
 617                 .endpoint = UE_ADDR_ANY,
 618                 .direction = UE_DIR_IN,
 619                 .flags = {
 620                         .pipe_bof = 0,
 621                         .short_xfer_ok = 1,
 622                 },
 623                 .bufsize = WSP_BUFFER_MAX,
 624                 .callback = &wsp_intr_callback,
 625         },
 626 };
 627
 628 static usb_error_t
 629 wsp_set_device_mode(struct wsp_softc *sc, uint8_t on)
 630 {
 631         const struct wsp_dev_params *params = sc->sc_params;
 632         uint8_t mode_bytes[8];
 633         usb_error_t err;
 634
 635         /* Type 3 does not require a mode switch */
 636         if (params->tp_type == TYPE3)
 637                 return 0;
 638
 639         err = usbd_req_get_report(sc->sc_usb_device, NULL,
 640             mode_bytes, params->um_size, params->iface_index,
 641             params->um_req_val, params->um_req_idx);
 642
 643         if (err != USB_ERR_NORMAL_COMPLETION) {
 644                 DPRINTF("Failed to read device mode (%d)\n", err);
 645                 return (err);
 646         }
 647
 648         /*
 649          * XXX Need to wait at least 250ms for hardware to get
 650          * ready. The device mode handling appears to be handled
 651          * asynchronously and we should not issue these commands too
 652          * quickly.
 653          */
 654         pause("WHW", hz / 4);
 655
 656         mode_bytes[params->um_switch_idx] =
 657             on ? params->um_switch_on : params->um_switch_off;
 658
 659         return (usbd_req_set_report(sc->sc_usb_device, NULL,
 660             mode_bytes, params->um_size, params->iface_index,
 661             params->um_req_val, params->um_req_idx));
 662 }
 663
 664 static int
 665 wsp_enable(struct wsp_softc *sc)
 666 {
 667         /* reset status */
 668         memset(&sc->sc_status, 0, sizeof(sc->sc_status));
 669         sc->sc_state |= WSP_ENABLED;
 670
 671         DPRINTFN(WSP_LLEVEL_INFO, "enabled wsp\n");
 672         return (0);
 673 }
 674
 675 static void
 676 wsp_disable(struct wsp_softc *sc)
 677 {
 678         sc->sc_state &= ~WSP_ENABLED;
 679         DPRINTFN(WSP_LLEVEL_INFO, "disabled wsp\n");
 680 }
 681
 682 static int
 683 wsp_probe(device_t self)
 684 {
 685         struct usb_attach_arg *uaa = device_get_ivars(self);
 686         struct usb_interface_descriptor *id;
 687         struct usb_interface *iface;
 688         uint8_t i;
 689
 690         if (uaa->usb_mode != USB_MODE_HOST)
 691                 return (ENXIO);
 692
 693         /* figure out first interface matching */
 694         for (i = 1;; i++) {
 695                 iface = usbd_get_iface(uaa->device, i);
 696                 if (iface == NULL || i == 3)
 697                         return (ENXIO);
 698                 id = iface->idesc;
 699                 if ((id == NULL) ||
 700                     (id->bInterfaceClass != UICLASS_HID) ||
 701                     (id->bInterfaceProtocol != 0 &&
 702                     id->bInterfaceProtocol != UIPROTO_MOUSE))
 703                         continue;
 704                 break;
 705         }
 706         /* check if we are attaching to the first match */
 707         if (uaa->info.bIfaceIndex != i)
 708                 return (ENXIO);
 709         return (usbd_lookup_id_by_uaa(wsp_devs, sizeof(wsp_devs), uaa));
 710 }
 711
 712 static int
 713 wsp_attach(device_t dev)
 714 {
 715         struct wsp_softc *sc = device_get_softc(dev);
 716         struct usb_attach_arg *uaa = device_get_ivars(dev);
 717         usb_error_t err;
 718         void *d_ptr = NULL;
 719         uint16_t d_len;
 720
 721         DPRINTFN(WSP_LLEVEL_INFO, "sc=%p\n", sc);
 722
 723         /* Get HID descriptor */
 724         err = usbd_req_get_hid_desc(uaa->device, NULL, &d_ptr,
 725             &d_len, M_TEMP, uaa->info.bIfaceIndex);
 726
 727         if (err == USB_ERR_NORMAL_COMPLETION) {
 728                 /* Get HID report descriptor length */
 729                 sc->tp_datalen = hid_report_size(d_ptr, d_len, hid_input, NULL);
 730                 free(d_ptr, M_TEMP);
 731
 732                 if (sc->tp_datalen <= 0 || sc->tp_datalen > WSP_BUFFER_MAX) {
 733                         DPRINTF("Invalid datalength or too big "
 734                             "datalength: %d\n", sc->tp_datalen);
 735                         return (ENXIO);
 736                 }
 737         } else {
 738                 return (ENXIO);
 739         }
 740
 741         sc->sc_usb_device = uaa->device;
 742
 743         /* get device specific configuration */
 744         sc->sc_params = wsp_dev_params + USB_GET_DRIVER_INFO(uaa);
 745
 746         /*
 747          * By default the touchpad behaves like a HID device, sending
 748          * packets with reportID = 8. Such reports contain only
 749          * limited information. They encode movement deltas and button
 750          * events, but do not include data from the pressure
 751          * sensors. The device input mode can be switched from HID
 752          * reports to raw sensor data using vendor-specific USB
 753          * control commands:
 754          */
 755
 756         /*
 757          * During re-enumeration of the device we need to force the
 758          * device back into HID mode before switching it to RAW
 759          * mode. Else the device does not work like expected.
 760          */
 761         err = wsp_set_device_mode(sc, 0);
 762         if (err != USB_ERR_NORMAL_COMPLETION) {
 763                 DPRINTF("Failed to set mode to HID MODE (%d)\n", err);
 764                 return (ENXIO);
 765         }
 766
 767         err = wsp_set_device_mode(sc, 1);
 768         if (err != USB_ERR_NORMAL_COMPLETION) {
 769                 DPRINTF("failed to set mode to RAW MODE (%d)\n", err);
 770                 return (ENXIO);
 771         }
 772
 773         mtx_init(&sc->sc_mutex, "wspmtx", NULL, MTX_DEF | MTX_RECURSE);
 774
 775         err = usbd_transfer_setup(uaa->device,
 776             &uaa->info.bIfaceIndex, sc->sc_xfer, wsp_config,
 777             WSP_N_TRANSFER, sc, &sc->sc_mutex);
 778         if (err) {
 779                 DPRINTF("error=%s\n", usbd_errstr(err));
 780                 goto detach;
 781         }
 782         if (usb_fifo_attach(sc->sc_usb_device, sc, &sc->sc_mutex,
 783             &wsp_fifo_methods, &sc->sc_fifo,
 784             device_get_unit(dev), -1, uaa->info.bIfaceIndex,
 785             UID_ROOT, GID_OPERATOR, 0644)) {
 786                 goto detach;
 787         }
 788         device_set_usb_desc(dev);
 789
 790         sc->sc_hw.buttons = 3;
 791         sc->sc_hw.iftype = MOUSE_IF_USB;
 792         sc->sc_hw.type = MOUSE_PAD;
 793         sc->sc_hw.model = MOUSE_MODEL_GENERIC;
 794         sc->sc_mode.protocol = MOUSE_PROTO_MSC;
 795         sc->sc_mode.rate = -1;
 796         sc->sc_mode.resolution = MOUSE_RES_UNKNOWN;
 797         sc->sc_mode.packetsize = MOUSE_MSC_PACKETSIZE;
 798         sc->sc_mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
 799         sc->sc_mode.syncmask[1] = MOUSE_MSC_SYNC;
 800
 801         sc->sc_touch = WSP_UNTOUCH;
 802         sc->scr_mode = WSP_SCR_NONE;
 803
 804         return (0);
 805
 806 detach:
 807         wsp_detach(dev);
 808         return (ENOMEM);
 809 }
 810
 811 static int
 812 wsp_detach(device_t dev)
 813 {
 814         struct wsp_softc *sc = device_get_softc(dev);
 815
 816         (void) wsp_set_device_mode(sc, 0);
 817
 818         mtx_lock(&sc->sc_mutex);
 819         if (sc->sc_state & WSP_ENABLED)
 820                 wsp_disable(sc);
 821         mtx_unlock(&sc->sc_mutex);
 822
 823         usb_fifo_detach(&sc->sc_fifo);
 824
 825         usbd_transfer_unsetup(sc->sc_xfer, WSP_N_TRANSFER);
 826
 827         mtx_destroy(&sc->sc_mutex);
 828
 829         return (0);
 830 }
 831
 832 static void
 833 wsp_intr_callback(struct usb_xfer *xfer, usb_error_t error)
 834 {
 835         struct wsp_softc *sc = usbd_xfer_softc(xfer);
 836         const struct wsp_dev_params *params = sc->sc_params;
 837         struct usb_page_cache *pc;
 838         struct tp_finger *f;
 839         struct tp_header *h;
 840         struct wsp_tuning tun = wsp_tuning;
 841         int ntouch = 0;                 /* the finger number in touch */
 842         int ibt = 0;                    /* button status */
 843         int dx = 0;
 844         int dy = 0;
 845         int dz = 0;
 846         int rdx = 0;
 847         int rdy = 0;
 848         int rdz = 0;
 849         int len;
 850         int i;
 851
 852         wsp_runing_rangecheck(&tun);
 853
 854         if (sc->dz_count == 0)
 855                 sc->dz_count = WSP_DZ_MAX_COUNT;
 856
 857         usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
 858
 859         switch (USB_GET_STATE(xfer)) {
 860         case USB_ST_TRANSFERRED:
 861
 862                 /* copy out received data */
 863                 pc = usbd_xfer_get_frame(xfer, 0);
 864                 usbd_copy_out(pc, 0, sc->tp_data, len);
 865
 866                 if ((len < params->tp_offset + params->tp_fsize) ||
 867                     ((len - params->tp_offset) % params->tp_fsize) != 0) {
 868                         DPRINTFN(WSP_LLEVEL_INFO, "Invalid length: %d, %x, %x\n",
 869                             len, sc->tp_data[0], sc->tp_data[1]);
 870                         goto tr_setup;
 871                 }
 872
 873                 if (len < sc->tp_datalen) {
 874                         /* make sure we don't process old data */
 875                         memset(sc->tp_data + len, 0, sc->tp_datalen - len);
 876                 }
 877
 878                 h = (struct tp_header *)(sc->tp_data);
 879
 880                 if (params->tp_type >= TYPE2) {
 881                         ibt = sc->tp_data[params->tp_button];
 882                         ntouch = sc->tp_data[params->tp_button - 1];
 883                 }
 884                 /* range check */
 885                 if (ntouch < 0)
 886                         ntouch = 0;
 887                 else if (ntouch > MAX_FINGERS)
 888                         ntouch = MAX_FINGERS;
 889
 890                 for (i = 0; i != ntouch; i++) {
 891                         f = (struct tp_finger *)(sc->tp_data + params->tp_offset + params->tp_delta + i * params->tp_fsize);
 892                         /* swap endianness, if any */
 893                         if (le16toh(0x1234) != 0x1234) {
 894                                 f->origin = le16toh((uint16_t)f->origin);
 895                                 f->abs_x = le16toh((uint16_t)f->abs_x);
 896                                 f->abs_y = le16toh((uint16_t)f->abs_y);
 897                                 f->rel_x = le16toh((uint16_t)f->rel_x);
 898                                 f->rel_y = le16toh((uint16_t)f->rel_y);
 899                                 f->tool_major = le16toh((uint16_t)f->tool_major);
 900                                 f->tool_minor = le16toh((uint16_t)f->tool_minor);
 901                                 f->orientation = le16toh((uint16_t)f->orientation);
 902                                 f->touch_major = le16toh((uint16_t)f->touch_major);
 903                                 f->touch_minor = le16toh((uint16_t)f->touch_minor);
 904                                 f->pressure = le16toh((uint16_t)f->pressure);
 905                                 f->multi = le16toh((uint16_t)f->multi);
 906                         }
 907                         DPRINTFN(WSP_LLEVEL_INFO,
 908                             "[%d]ibt=%d, taps=%d, o=%4d, ax=%5d, ay=%5d, "
 909                             "rx=%5d, ry=%5d, tlmaj=%4d, tlmin=%4d, ot=%4x, "
 910                             "tchmaj=%4d, tchmin=%4d, presure=%4d, m=%4x\n",
 911                             i, ibt, ntouch, f->origin, f->abs_x, f->abs_y,
 912                             f->rel_x, f->rel_y, f->tool_major, f->tool_minor, f->orientation,
 913                             f->touch_major, f->touch_minor, f->pressure, f->multi);
 914                         sc->pos_x[i] = f->abs_x;
 915                         sc->pos_y[i] = -f->abs_y;
 916                         sc->index[i] = f;
 917                 }
 918
 919                 sc->sc_status.flags &= ~MOUSE_POSCHANGED;
 920                 sc->sc_status.flags &= ~MOUSE_STDBUTTONSCHANGED;
 921                 sc->sc_status.obutton = sc->sc_status.button;
 922                 sc->sc_status.button = 0;
 923
 924                 if (ibt != 0) {
 925                         if ((params->caps & HAS_INTEGRATED_BUTTON) && ntouch == 2)
 926                                 sc->sc_status.button |= MOUSE_BUTTON3DOWN;
 927                         else if ((params->caps & HAS_INTEGRATED_BUTTON) && ntouch == 3)
 928                                 sc->sc_status.button |= MOUSE_BUTTON2DOWN;
 929                         else
 930                                 sc->sc_status.button |= MOUSE_BUTTON1DOWN;
 931                         sc->ibtn = 1;
 932                 }
 933                 sc->intr_count++;
 934
 935                 if (sc->ntaps < ntouch) {
 936                         switch (ntouch) {
 937                         case 1:
 938                                 if (sc->index[0]->touch_major > tun.pressure_tap_threshold &&
 939                                     sc->index[0]->tool_major <= 1200)
 940                                         sc->ntaps = 1;
 941                                 break;
 942                         case 2:
 943                                 if (sc->index[0]->touch_major > tun.pressure_tap_threshold-30 &&
 944                                     sc->index[1]->touch_major > tun.pressure_tap_threshold-30)
 945                                         sc->ntaps = 2;
 946                                 break;
 947                         case 3:
 948                                 if (sc->index[0]->touch_major > tun.pressure_tap_threshold-40 &&
 949                                     sc->index[1]->touch_major > tun.pressure_tap_threshold-40 &&
 950                                     sc->index[2]->touch_major > tun.pressure_tap_threshold-40)
 951                                         sc->ntaps = 3;
 952                                 break;
 953                         default:
 954                                 break;
 955                         }
 956                 }
 957                 if (ntouch == 2) {
 958                         sc->distance = max(sc->distance, max(
 959                             abs(sc->pos_x[0] - sc->pos_x[1]),
 960                             abs(sc->pos_y[0] - sc->pos_y[1])));
 961                 }
 962                 if (sc->index[0]->touch_major < tun.pressure_untouch_threshold &&
 963                     sc->sc_status.button == 0) {
 964                         sc->sc_touch = WSP_UNTOUCH;
 965                         if (sc->intr_count < WSP_TAP_MAX_COUNT &&
 966                             sc->intr_count > WSP_TAP_THRESHOLD &&
 967                             sc->ntaps && sc->ibtn == 0) {
 968                                 /*
 969                                  * Add a pair of events (button-down and
 970                                  * button-up).
 971                                  */
 972                                 switch (sc->ntaps) {
 973                                 case 1:
 974                                         if (!(params->caps & HAS_INTEGRATED_BUTTON)) {
 975                                                 wsp_add_to_queue(sc, 0, 0, 0, MOUSE_BUTTON1DOWN);
 976                                                 DPRINTFN(WSP_LLEVEL_INFO, "LEFT CLICK!\n");
 977                                         }
 978                                         break;
 979                                 case 2:
 980                                         DPRINTFN(WSP_LLEVEL_INFO, "sum_x=%5d, sum_y=%5d\n",
 981                                             sc->dx_sum, sc->dy_sum);
 982                                         if (sc->distance < MAX_DISTANCE && abs(sc->dx_sum) < 5 &&
 983                                             abs(sc->dy_sum) < 5) {
 984                                                 wsp_add_to_queue(sc, 0, 0, 0, MOUSE_BUTTON3DOWN);
 985                                                 DPRINTFN(WSP_LLEVEL_INFO, "RIGHT CLICK!\n");
 986                                         }
 987                                         break;
 988                                 case 3:
 989                                         wsp_add_to_queue(sc, 0, 0, 0, MOUSE_BUTTON2DOWN);
 990                                         break;
 991                                 default:
 992                                         /* we don't handle taps of more than three fingers */
 993                                         break;
 994                                 }
 995                                 wsp_add_to_queue(sc, 0, 0, 0, 0);       /* button release */
 996                         }
 997                         if ((sc->dt_sum / tun.scr_hor_threshold) != 0 &&
 998                             sc->ntaps == 2 && sc->scr_mode == WSP_SCR_HOR) {
 999
1000                                 /*
1001                                  * translate T-axis into button presses
1002                                  * until further
1003                                  */
1004                                 if (sc->dt_sum > 0)
1005                                         wsp_add_to_queue(sc, 0, 0, 0, 1UL << 3);
1006                                 else if (sc->dt_sum < 0)
1007                                         wsp_add_to_queue(sc, 0, 0, 0, 1UL << 4);
1008                         }
1009                         sc->dz_count = WSP_DZ_MAX_COUNT;
1010                         sc->dz_sum = 0;
1011                         sc->intr_count = 0;
1012                         sc->ibtn = 0;
1013                         sc->ntaps = 0;
1014                         sc->finger = 0;
1015                         sc->distance = 0;
1016                         sc->dt_sum = 0;
1017                         sc->dx_sum = 0;
1018                         sc->dy_sum = 0;
1019                         sc->rdx = 0;
1020                         sc->rdy = 0;
1021                         sc->rdz = 0;
1022                         sc->scr_mode = WSP_SCR_NONE;
1023                 } else if (sc->index[0]->touch_major >= tun.pressure_touch_threshold &&
1024                     sc->sc_touch == WSP_UNTOUCH) {      /* ignore first touch */
1025                         sc->sc_touch = WSP_FIRST_TOUCH;
1026                 } else if (sc->index[0]->touch_major >= tun.pressure_touch_threshold &&
1027                     sc->sc_touch == WSP_FIRST_TOUCH) {  /* ignore second touch */
1028                         sc->sc_touch = WSP_SECOND_TOUCH;
1029                         DPRINTFN(WSP_LLEVEL_INFO, "Fist pre_x=%5d, pre_y=%5d\n",
1030                             sc->pre_pos_x, sc->pre_pos_y);
1031                 } else {
1032                         if (sc->sc_touch == WSP_SECOND_TOUCH)
1033                                 sc->sc_touch = WSP_TOUCHING;
1034
1035                         if (ntouch != 0 &&
1036                             sc->index[0]->touch_major >= tun.pressure_touch_threshold) {
1037                                 dx = sc->pos_x[0] - sc->pre_pos_x;
1038                                 dy = sc->pos_y[0] - sc->pre_pos_y;
1039
1040                                 /* Ignore movement during button is releasing */
1041                                 if (sc->ibtn != 0 && sc->sc_status.button == 0)
1042                                         dx = dy = 0;
1043
1044                                 /* Ignore movement if ntouch changed */
1045                                 if (sc->o_ntouch != ntouch)
1046                                         dx = dy = 0;
1047
1048                                 /* Ignore unexpeted movment when typing */
1049                                 if (ntouch == 1 && sc->index[0]->tool_major > 1200)
1050                                         dx = dy = 0;
1051
1052                                 if (sc->ibtn != 0 && ntouch == 1 &&
1053                                     sc->intr_count < WSP_TAP_MAX_COUNT &&
1054                                     abs(sc->dx_sum) < 1 && abs(sc->dy_sum) < 1 )
1055                                         dx = dy = 0;
1056
1057                                 if (ntouch == 2 && sc->sc_status.button != 0) {
1058                                         dx = sc->pos_x[sc->finger] - sc->pre_pos_x;
1059                                         dy = sc->pos_y[sc->finger] - sc->pre_pos_y;
1060
1061                                         /*
1062                                          * Ignore movement of switch finger or
1063                                          * movement from ibt=0 to ibt=1
1064                                          */
1065                                         if (sc->index[0]->origin == 0 || sc->index[1]->origin == 0 ||
1066                                             sc->sc_status.obutton != sc->sc_status.button) {
1067                                                 dx = dy = 0;
1068                                                 sc->finger = 0;
1069                                         }
1070                                         if ((abs(sc->index[0]->rel_x) + abs(sc->index[0]->rel_y)) <
1071                                             (abs(sc->index[1]->rel_x) + abs(sc->index[1]->rel_y)) &&
1072                                             sc->finger == 0) {
1073                                                 sc->sc_touch = WSP_SECOND_TOUCH;
1074                                                 dx = dy = 0;
1075                                                 sc->finger = 1;
1076                                         }
1077                                         if ((abs(sc->index[0]->rel_x) + abs(sc->index[0]->rel_y)) >=
1078                                             (abs(sc->index[1]->rel_x) + abs(sc->index[1]->rel_y)) &&
1079                                             sc->finger == 1) {
1080                                                 sc->sc_touch = WSP_SECOND_TOUCH;
1081                                                 dx = dy = 0;
1082                                                 sc->finger = 0;
1083                                         }
1084                                         DPRINTFN(WSP_LLEVEL_INFO, "dx=%5d, dy=%5d, mov=%5d\n",
1085                                             dx, dy, sc->finger);
1086                                 }
1087                                 if (sc->dz_count--) {
1088                                         rdz = (dy + sc->rdz) % tun.scale_factor;
1089                                         sc->dz_sum -= (dy + sc->rdz) / tun.scale_factor;
1090                                         sc->rdz = rdz;
1091                                 }
1092                                 if ((sc->dz_sum / tun.z_factor) != 0)
1093                                         sc->dz_count = 0;
1094                         }
1095                         rdx = (dx + sc->rdx) % tun.scale_factor;
1096                         dx = (dx + sc->rdx) / tun.scale_factor;
1097                         sc->rdx = rdx;
1098
1099                         rdy = (dy + sc->rdy) % tun.scale_factor;
1100                         dy = (dy + sc->rdy) / tun.scale_factor;
1101                         sc->rdy = rdy;
1102
1103                         sc->dx_sum += dx;
1104                         sc->dy_sum += dy;
1105
1106                         if (ntouch == 2 && sc->sc_status.button == 0) {
1107                                 if (sc->scr_mode == WSP_SCR_NONE &&
1108                                     abs(sc->dx_sum) + abs(sc->dy_sum) > tun.scr_hor_threshold)
1109                                         sc->scr_mode = abs(sc->dx_sum) >
1110                                             abs(sc->dy_sum) * 2 ? WSP_SCR_HOR : WSP_SCR_VER;
1111                                 DPRINTFN(WSP_LLEVEL_INFO, "scr_mode=%5d, count=%d, dx_sum=%d, dy_sum=%d\n",
1112                                     sc->scr_mode, sc->intr_count, sc->dx_sum, sc->dy_sum);
1113                                 if (sc->scr_mode == WSP_SCR_HOR)
1114                                         sc->dt_sum += dx;
1115                                 else
1116                                         sc->dt_sum = 0;
1117
1118                                 dx = dy = 0;
1119                                 if (sc->dz_count == 0)
1120                                         dz = sc->dz_sum / tun.z_factor;
1121                                 if (sc->scr_mode == WSP_SCR_HOR ||
1122                                     abs(sc->pos_x[0] - sc->pos_x[1]) > MAX_DISTANCE ||
1123                                     abs(sc->pos_y[0] - sc->pos_y[1]) > MAX_DISTANCE)
1124                                         dz = 0;
1125                         }
1126                         if (ntouch == 3)
1127                                 dx = dy = dz = 0;
1128                         if (sc->intr_count < WSP_TAP_MAX_COUNT &&
1129                             abs(dx) < 3 && abs(dy) < 3 && abs(dz) < 3)
1130                                 dx = dy = dz = 0;
1131                         else
1132                                 sc->intr_count = WSP_TAP_MAX_COUNT;
1133                         if (dx || dy || dz)
1134                                 sc->sc_status.flags |= MOUSE_POSCHANGED;
1135                         DPRINTFN(WSP_LLEVEL_INFO, "dx=%5d, dy=%5d, dz=%5d, sc_touch=%x, btn=%x\n",
1136                             dx, dy, dz, sc->sc_touch, sc->sc_status.button);
1137                         sc->sc_status.dx += dx;
1138                         sc->sc_status.dy += dy;
1139                         sc->sc_status.dz += dz;
1140
1141                         wsp_add_to_queue(sc, dx, -dy, dz, sc->sc_status.button);
1142                         if (sc->dz_count == 0) {
1143                                 sc->dz_sum = 0;
1144                                 sc->rdz = 0;
1145                         }
1146
1147                 }
1148                 sc->pre_pos_x = sc->pos_x[0];
1149                 sc->pre_pos_y = sc->pos_y[0];
1150
1151                 if (ntouch == 2 && sc->sc_status.button != 0) {
1152                         sc->pre_pos_x = sc->pos_x[sc->finger];
1153                         sc->pre_pos_y = sc->pos_y[sc->finger];
1154                 }
1155                 sc->o_ntouch = ntouch;
1156
1157         case USB_ST_SETUP:
1158 tr_setup:
1159                 /* check if we can put more data into the FIFO */
1160                 if (usb_fifo_put_bytes_max(
1161                     sc->sc_fifo.fp[USB_FIFO_RX]) != 0) {
1162                         usbd_xfer_set_frame_len(xfer, 0,
1163                             sc->tp_datalen);
1164                         usbd_transfer_submit(xfer);
1165                 }
1166                 break;
1167
1168         default:                        /* Error */
1169                 if (error != USB_ERR_CANCELLED) {
1170                         /* try clear stall first */
1171                         usbd_xfer_set_stall(xfer);
1172                         goto tr_setup;
1173                 }
1174                 break;
1175         }
1176 }
1177
1178 static void
1179 wsp_add_to_queue(struct wsp_softc *sc, int dx, int dy, int dz,
1180     uint32_t buttons_in)
1181 {
1182         uint32_t buttons_out;
1183         uint8_t buf[8];
1184
1185         dx = imin(dx, 254);
1186         dx = imax(dx, -256);
1187         dy = imin(dy, 254);
1188         dy = imax(dy, -256);
1189         dz = imin(dz, 126);
1190         dz = imax(dz, -128);
1191
1192         buttons_out = MOUSE_MSC_BUTTONS;
1193         if (buttons_in & MOUSE_BUTTON1DOWN)
1194                 buttons_out &= ~MOUSE_MSC_BUTTON1UP;
1195         else if (buttons_in & MOUSE_BUTTON2DOWN)
1196                 buttons_out &= ~MOUSE_MSC_BUTTON2UP;
1197         else if (buttons_in & MOUSE_BUTTON3DOWN)
1198                 buttons_out &= ~MOUSE_MSC_BUTTON3UP;
1199
1200         /* Encode the mouse data in standard format; refer to mouse(4) */
1201         buf[0] = sc->sc_mode.syncmask[1];
1202         buf[0] |= buttons_out;
1203         buf[1] = dx >> 1;
1204         buf[2] = dy >> 1;
1205         buf[3] = dx - (dx >> 1);
1206         buf[4] = dy - (dy >> 1);
1207         /* Encode extra bytes for level 1 */
1208         if (sc->sc_mode.level == 1) {
1209                 buf[5] = dz >> 1;       /* dz / 2 */
1210                 buf[6] = dz - (dz >> 1);/* dz - (dz / 2) */
1211                 buf[7] = (((~buttons_in) >> 3) & MOUSE_SYS_EXTBUTTONS);
1212         }
1213         usb_fifo_put_data_linear(sc->sc_fifo.fp[USB_FIFO_RX], buf,
1214             sc->sc_mode.packetsize, 1);
1215 }
1216
1217 static void
1218 wsp_reset_buf(struct wsp_softc *sc)
1219 {
1220         /* reset read queue */
1221         usb_fifo_reset(sc->sc_fifo.fp[USB_FIFO_RX]);
1222 }
1223
1224 static void
1225 wsp_start_read(struct usb_fifo *fifo)
1226 {
1227         struct wsp_softc *sc = usb_fifo_softc(fifo);
1228         int rate;
1229
1230         /* Check if we should override the default polling interval */
1231         rate = sc->sc_pollrate;
1232         /* Range check rate */
1233         if (rate > 1000)
1234                 rate = 1000;
1235         /* Check for set rate */
1236         if ((rate > 0) && (sc->sc_xfer[WSP_INTR_DT] != NULL)) {
1237                 /* Stop current transfer, if any */
1238                 usbd_transfer_stop(sc->sc_xfer[WSP_INTR_DT]);
1239                 /* Set new interval */
1240                 usbd_xfer_set_interval(sc->sc_xfer[WSP_INTR_DT], 1000 / rate);
1241                 /* Only set pollrate once */
1242                 sc->sc_pollrate = 0;
1243         }
1244         usbd_transfer_start(sc->sc_xfer[WSP_INTR_DT]);
1245 }
1246
1247 static void
1248 wsp_stop_read(struct usb_fifo *fifo)
1249 {
1250         struct wsp_softc *sc = usb_fifo_softc(fifo);
1251
1252         usbd_transfer_stop(sc->sc_xfer[WSP_INTR_DT]);
1253 }
1254
1255
1256 static int
1257 wsp_open(struct usb_fifo *fifo, int fflags)
1258 {
1259         DPRINTFN(WSP_LLEVEL_INFO, "\n");
1260
1261         if (fflags & FREAD) {
1262                 struct wsp_softc *sc = usb_fifo_softc(fifo);
1263                 int rc;
1264
1265                 if (sc->sc_state & WSP_ENABLED)
1266                         return (EBUSY);
1267
1268                 if (usb_fifo_alloc_buffer(fifo,
1269                     WSP_FIFO_BUF_SIZE, WSP_FIFO_QUEUE_MAXLEN)) {
1270                         return (ENOMEM);
1271                 }
1272                 rc = wsp_enable(sc);
1273                 if (rc != 0) {
1274                         usb_fifo_free_buffer(fifo);
1275                         return (rc);
1276                 }
1277         }
1278         return (0);
1279 }
1280
1281 static void
1282 wsp_close(struct usb_fifo *fifo, int fflags)
1283 {
1284         if (fflags & FREAD) {
1285                 struct wsp_softc *sc = usb_fifo_softc(fifo);
1286
1287                 wsp_disable(sc);
1288                 usb_fifo_free_buffer(fifo);
1289         }
1290 }
1291
1292 int
1293 wsp_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr, int fflags)
1294 {
1295         struct wsp_softc *sc = usb_fifo_softc(fifo);
1296         mousemode_t mode;
1297         int error = 0;
1298
1299         mtx_lock(&sc->sc_mutex);
1300
1301         switch (cmd) {
1302         case MOUSE_GETHWINFO:
1303                 *(mousehw_t *)addr = sc->sc_hw;
1304                 break;
1305         case MOUSE_GETMODE:
1306                 *(mousemode_t *)addr = sc->sc_mode;
1307                 break;
1308         case MOUSE_SETMODE:
1309                 mode = *(mousemode_t *)addr;
1310
1311                 if (mode.level == -1)
1312                         /* Don't change the current setting */
1313                         ;
1314                 else if ((mode.level < 0) || (mode.level > 1)) {
1315                         error = EINVAL;
1316                         goto done;
1317                 }
1318                 sc->sc_mode.level = mode.level;
1319                 sc->sc_pollrate = mode.rate;
1320                 sc->sc_hw.buttons = 3;
1321
1322                 if (sc->sc_mode.level == 0) {
1323                         sc->sc_mode.protocol = MOUSE_PROTO_MSC;
1324                         sc->sc_mode.packetsize = MOUSE_MSC_PACKETSIZE;
1325                         sc->sc_mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
1326                         sc->sc_mode.syncmask[1] = MOUSE_MSC_SYNC;
1327                 } else if (sc->sc_mode.level == 1) {
1328                         sc->sc_mode.protocol = MOUSE_PROTO_SYSMOUSE;
1329                         sc->sc_mode.packetsize = MOUSE_SYS_PACKETSIZE;
1330                         sc->sc_mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
1331                         sc->sc_mode.syncmask[1] = MOUSE_SYS_SYNC;
1332                 }
1333                 wsp_reset_buf(sc);
1334                 break;
1335         case MOUSE_GETLEVEL:
1336                 *(int *)addr = sc->sc_mode.level;
1337                 break;
1338         case MOUSE_SETLEVEL:
1339                 if (*(int *)addr < 0 || *(int *)addr > 1) {
1340                         error = EINVAL;
1341                         goto done;
1342                 }
1343                 sc->sc_mode.level = *(int *)addr;
1344                 sc->sc_hw.buttons = 3;
1345
1346                 if (sc->sc_mode.level == 0) {
1347                         sc->sc_mode.protocol = MOUSE_PROTO_MSC;
1348                         sc->sc_mode.packetsize = MOUSE_MSC_PACKETSIZE;
1349                         sc->sc_mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
1350                         sc->sc_mode.syncmask[1] = MOUSE_MSC_SYNC;
1351                 } else if (sc->sc_mode.level == 1) {
1352                         sc->sc_mode.protocol = MOUSE_PROTO_SYSMOUSE;
1353                         sc->sc_mode.packetsize = MOUSE_SYS_PACKETSIZE;
1354                         sc->sc_mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
1355                         sc->sc_mode.syncmask[1] = MOUSE_SYS_SYNC;
1356                 }
1357                 wsp_reset_buf(sc);
1358                 break;
1359         case MOUSE_GETSTATUS:{
1360                         mousestatus_t *status = (mousestatus_t *)addr;
1361
1362                         *status = sc->sc_status;
1363                         sc->sc_status.obutton = sc->sc_status.button;
1364                         sc->sc_status.button = 0;
1365                         sc->sc_status.dx = 0;
1366                         sc->sc_status.dy = 0;
1367                         sc->sc_status.dz = 0;
1368
1369                         if (status->dx || status->dy || status->dz)
1370                                 status->flags |= MOUSE_POSCHANGED;
1371                         if (status->button != status->obutton)
1372                                 status->flags |= MOUSE_BUTTONSCHANGED;
1373                         break;
1374                 }
1375         default:
1376                 error = ENOTTY;
1377         }
1378
1379 done:
1380         mtx_unlock(&sc->sc_mutex);
1381         return (error);
1382 }
1383
1384 static device_method_t wsp_methods[] = {
1385         /* Device interface */
1386         DEVMETHOD(device_probe, wsp_probe),
1387         DEVMETHOD(device_attach, wsp_attach),
1388         DEVMETHOD(device_detach, wsp_detach),
1389         DEVMETHOD_END
1390 };
1391
1392 static driver_t wsp_driver = {
1393         .name = WSP_DRIVER_NAME,
1394         .methods = wsp_methods,
1395         .size = sizeof(struct wsp_softc)
1396 };
1397
1398 static devclass_t wsp_devclass;
1399
1400 DRIVER_MODULE(wsp, uhub, wsp_driver, wsp_devclass, NULL, 0);
1401 MODULE_DEPEND(wsp, usb, 1, 1, 1);
1402 MODULE_VERSION(wsp, 1);