git.oblomov.eu Git - xorg/acecad/blob - src/acecad.c

   1 /*
   2  * Copyright (c) 2001 Edouard TISSERANT <tissered@esstin.u-nancy.fr>
   3  * Parts inspired from Shane Watts <shane@bofh.asn.au> XFree86 3 Acecad Driver
   4  * Thanks to Emily, from AceCad, For giving me documents.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  21  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  *
  25  */
  26 /* $XFree86: xc/programs/Xserver/hw/xfree86/input/acecad/acecad.c,v 1.4 2003/10/30 00:40:45 dawes Exp $ */
  27
  28 #include "config.h"
  29
  30 #define _ACECAD_C_
  31 /*****************************************************************************
  32  *      Standard Headers
  33  ****************************************************************************/
  34
  35 #ifdef LINUX_INPUT
  36 #include <asm/types.h>
  37 #include <linux/input.h>
  38 #ifndef EV_SYN
  39 #define EV_SYN EV_RST
  40 #define SYN_REPORT 0
  41 #endif
  42 #ifdef BUS_PCI
  43 #undef BUS_PCI
  44 #endif
  45 #ifdef BUS_ISA
  46 #undef BUS_ISA
  47 #endif
  48 #endif
  49
  50 #include <misc.h>
  51 #include <xf86.h>
  52 #ifndef NEED_XF86_TYPES
  53 #define NEED_XF86_TYPES
  54 #endif
  55 #include <xf86_OSproc.h>
  56 #include <xisb.h>
  57 #include <xf86Xinput.h>
  58 #include <exevents.h>
  59 #include <xf86Module.h>
  60
  61 #include <string.h>
  62 #include <stdio.h>
  63
  64 #ifdef LINUX_INPUT
  65 #include <errno.h>
  66 #include <fcntl.h>
  67 #ifdef LINUX_SYSFS
  68 #include <sysfs/libsysfs.h>
  69 #include <dlfcn.h>
  70 #endif
  71 #endif
  72
  73 /*****************************************************************************
  74  *      Local Headers
  75  ****************************************************************************/
  76 #include "acecad.h"
  77
  78 /*****************************************************************************
  79  *      Variables without includable headers
  80  ****************************************************************************/
  81
  82 /*****************************************************************************
  83  *      Local Variables
  84  ****************************************************************************/
  85
  86 #undef read
  87 #define read(a,b,c) xf86ReadSerial((a),(b),(c))
  88
  89 /* max number of input events to read in one read call */
  90 #define MAX_EVENTS 50
  91
  92 _X_EXPORT InputDriverRec ACECAD =
  93 {
  94         1,
  95         "acecad",
  96         NULL,
  97         AceCadPreInit,
  98         NULL,
  99         NULL,
 100         0
 101 };
 102
 103 #ifdef XFree86LOADER
 104 static XF86ModuleVersionInfo VersionRec =
 105 {
 106         "acecad",
 107         MODULEVENDORSTRING,
 108         MODINFOSTRING1,
 109         MODINFOSTRING2,
 110         XORG_VERSION_CURRENT,
 111         PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL,
 112         ABI_CLASS_XINPUT,
 113         ABI_XINPUT_VERSION,
 114         MOD_CLASS_XINPUT,
 115         {0, 0, 0, 0}
 116 };
 117
 118
 119 _X_EXPORT XF86ModuleData acecadModuleData = {
 120         &VersionRec,
 121         SetupProc,
 122         TearDownProc
 123 };
 124
 125 /*****************************************************************************
 126  *      Function Definitions
 127  ****************************************************************************/
 128
 129 static pointer
 130 SetupProc(      pointer module,
 131                 pointer options,
 132                 int *errmaj,
 133                 int *errmin )
 134 {
 135         xf86AddInputDriver(&ACECAD, module, 0);
 136         return module;
 137 }
 138
 139 static void
 140 TearDownProc( pointer p )
 141 {
 142 #if 0
 143         LocalDevicePtr local = (LocalDevicePtr) p;
 144         AceCadPrivatePtr priv = (AceCadPrivatePtr) local->private;
 145
 146         DeviceOff (local->dev);
 147
 148         xf86CloseSerial (local->fd);
 149         XisbFree (priv->buffer);
 150         xfree (priv);
 151         xfree (local->name);
 152         xfree (local);
 153 #endif
 154 }
 155 #endif
 156
 157 static const char *default_options[] =
 158 {
 159         "BaudRate", "9600",
 160         "StopBits", "1",
 161         "DataBits", "8",
 162         "Parity", "Odd",
 163         "Vmin", "1",
 164         "Vtime", "10",
 165         "FlowControl", "Xoff",
 166         NULL
 167 };
 168
 169 #ifdef LINUX_INPUT
 170 static int
 171 IsUSBLine(int fd)
 172 {
 173     int version;
 174     int err;
 175
 176     SYSCALL(err = ioctl(fd, EVIOCGVERSION, &version));
 177
 178     if (!err) {
 179         xf86MsgVerb(X_PROBED, 4, "Kernel Input driver version is %d.%d.%d\n",
 180                 version >> 16, (version >> 8) & 0xff, version & 0xff);
 181         return 1;
 182     } else {
 183         xf86MsgVerb(X_PROBED, 4, "No Kernel Input driver found\n");
 184         return 0;
 185     }
 186 }
 187
 188 /* Heavily inspired by synaptics/eventcomm.c */
 189
 190 #define DEV_INPUT_EVENT "/dev/input/event"
 191 #define EV_DEV_NAME_MAXLEN 64
 192 #define SET_EVENT_NUM(str, num) \
 193     snprintf(str, EV_DEV_NAME_MAXLEN, "%s%d", DEV_INPUT_EVENT, num)
 194
 195 static Bool
 196 fd_query_acecad(int fd, char *ace_name) {
 197     char name[256] = "Unknown";
 198     int cmp_at = strlen(ace_name);
 199     if (cmp_at > 255)
 200         cmp_at = 255;
 201     ioctl(fd, EVIOCGNAME(sizeof(name)), name);
 202     name[cmp_at] = '\0';
 203     if (xf86NameCmp(name, ace_name) == 0)
 204         return TRUE;
 205     return FALSE;
 206 }
 207
 208 static char ace_name_default[7] = "acecad";
 209
 210 #ifdef LINUX_SYSFS
 211 static char usb_bus_name[4] = "usb";
 212 static char acecad_driver_name[11] = "usb_acecad";
 213 #endif
 214
 215 static Bool
 216 AceCadAutoDevProbe(LocalDevicePtr local, int verb)
 217 {
 218     /* We are trying to find the right eventX device */
 219     int i = 0;
 220     Bool have_evdev = FALSE;
 221     int noent_cnt = 0;
 222     const int max_skip = 10;
 223     char *ace_name = xf86FindOptionValue(local->options, "Name");
 224     char fname[EV_DEV_NAME_MAXLEN];
 225     int np;
 226
 227 #ifdef LINUX_SYSFS
 228     struct sysfs_bus *usb_bus = NULL;
 229     struct sysfs_driver *acecad_driver = NULL;
 230     struct sysfs_device *candidate = NULL;
 231     char *link = NULL;
 232     struct dlist *devs = NULL;
 233     struct dlist *links = NULL;
 234     unsigned int major = 0, minor = 0;
 235     void *libsysfs = NULL;
 236
 237     if (libsysfs = dlopen("libsysfs.so", RTLD_NOW | RTLD_GLOBAL)) {
 238         xf86MsgVerb(X_INFO, verb, "%s: querying sysfs for Acecad tablets\n", local->name);
 239         usb_bus = sysfs_open_bus(usb_bus_name);
 240         if (usb_bus) {
 241             xf86MsgVerb(X_PROBED, 4, "%s: usb bus opened\n", local->name);
 242             acecad_driver = sysfs_get_bus_driver(usb_bus, acecad_driver_name);
 243             if (acecad_driver) {
 244                 xf86MsgVerb(X_PROBED, 4, "%s: usb_acecad driver opened\n", local->name);
 245                 devs = sysfs_get_driver_devices(acecad_driver);
 246                 if (devs) {
 247                     xf86MsgVerb(X_PROBED, 4, "%s: usb_acecad devices retrieved\n", local->name);
 248                     dlist_for_each_data(devs, candidate, struct sysfs_device) {
 249                         xf86MsgVerb(X_PROBED, 4, "%s: device %s at %s\n", local->name, candidate->name, candidate->path);
 250                         links = sysfs_open_link_list(candidate->path);
 251                         dlist_for_each_data(links, link, char) {
 252                             if (sscanf(link, "input:event%d", &i) == 1) {
 253                                 xf86MsgVerb(X_PROBED, 4, "%s: device %s at %s: %s\n", local->name, candidate->name, candidate->path, link);
 254                                 break;
 255                             }
 256                         }
 257                         sysfs_close_list(links);
 258                         if (i > 0) /* We found something */
 259                             break;
 260                     }
 261                 } else
 262                     xf86MsgVerb(X_WARNING, 4, "%s: no usb_acecad devices found\n", local->name);
 263             } else
 264                 xf86MsgVerb(X_WARNING, 4, "%s: usb_acecad driver not found\n", local->name);
 265         } else
 266             xf86MsgVerb(X_WARNING, 4, "%s: usb bus not found\n", local->name);
 267         sysfs_close_bus(usb_bus);
 268         dlclose(libsysfs);
 269
 270         if (i > 0) {
 271             /* We found something */
 272             np = SET_EVENT_NUM(fname, i);
 273             if (np < 0 || np >= EV_DEV_NAME_MAXLEN) {
 274                 xf86MsgVerb(X_WARNING, verb, "%s: unable to manage event device %d\n", local->name, i);
 275             } else {
 276                 goto ProbeFound;
 277             }
 278         } else
 279             xf86MsgVerb(X_WARNING, verb, "%s: no Acecad devices found via sysfs\n", local->name);
 280     } else
 281         xf86MsgVerb(X_WARNING, 4, "%s: libsysfs not found\n", local->name);
 282
 283 #endif
 284
 285     if (!ace_name)
 286         ace_name = ace_name_default;
 287
 288     xf86MsgVerb(X_INFO, verb, "%s: probing event devices for Acecad tablets\n", local->name);
 289     for (i = 0; ; i++) {
 290         int fd = -1;
 291         Bool is_acecad;
 292
 293         np = SET_EVENT_NUM(fname, i);
 294         if (np < 0 || np >= EV_DEV_NAME_MAXLEN) {
 295             xf86MsgVerb(X_WARNING, verb, "%s: too many devices, giving up %d\n", local->name, i);
 296             break;
 297         }
 298         SYSCALL(fd = open(fname, O_RDONLY));
 299         if (fd < 0) {
 300             if (errno == ENOENT) {
 301                 if (++noent_cnt >= max_skip)
 302                     break;
 303                 else
 304                     continue;
 305             } else {
 306                 continue;
 307             }
 308         }
 309         noent_cnt = 0;
 310         have_evdev = TRUE;
 311         is_acecad = fd_query_acecad(fd, ace_name);
 312         SYSCALL(close(fd));
 313         if (is_acecad) {
 314             goto ProbeFound;
 315         }
 316     }
 317     xf86MsgVerb(X_WARNING, verb, "%s: no Acecad event device found (checked %d nodes, no device name started with '%s')\n",
 318             local->name, i + 1, ace_name);
 319     if (i <= max_skip)
 320         xf86MsgVerb(X_WARNING, verb, "%s: The /dev/input/event* device nodes seem to be missing\n",
 321                 local->name);
 322     if (i > max_skip && !have_evdev)
 323         xf86MsgVerb(X_WARNING, verb, "%s: The evdev kernel module seems to be missing\n", local->name);
 324     return FALSE;
 325
 326 ProbeFound:
 327     xf86Msg(X_PROBED, "%s auto-dev sets device to %s\n",
 328             local->name, fname);
 329     xf86ReplaceStrOption(local->options, "Device", fname);
 330     return TRUE;
 331 }
 332
 333 #endif
 334
 335 static InputInfoPtr
 336 AceCadPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
 337 {
 338     LocalDevicePtr local = xf86AllocateInput(drv, 0);
 339     AceCadPrivatePtr priv = xcalloc (1, sizeof(AceCadPrivateRec));
 340     int speed;
 341     int msgtype;
 342     char *s;
 343
 344     if ((!local) || (!priv))
 345         goto SetupProc_fail;
 346
 347     memset(priv, 0, sizeof(AceCadPrivateRec));
 348
 349     local->name = dev->identifier;
 350     local->type_name = "ACECAD Tablet";
 351     local->flags = XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS;
 352     local->motion_history_proc = xf86GetMotionEvents;
 353     local->control_proc = NULL;
 354     local->close_proc = CloseProc;
 355     local->switch_mode = NULL;
 356     local->conversion_proc = ConvertProc;
 357     local->reverse_conversion_proc = ReverseConvertProc;
 358     local->dev = NULL;
 359     local->private = priv;
 360     local->private_flags = 0;
 361     local->conf_idev = dev;
 362     local->device_control = DeviceControl;
 363     /*local->always_core_feedback = 0;*/
 364
 365     xf86CollectInputOptions(local, default_options, NULL);
 366
 367     xf86OptionListReport(local->options);
 368
 369     priv->acecadInc = xf86SetIntOption(local->options, "Increment", 0 );
 370
 371     s = xf86FindOptionValue(local->options, "Device");
 372     if (!s || (s && (xf86NameCmp(s, "auto-dev") == 0))) {
 373 #ifdef LINUX_INPUT
 374         priv->flags |= AUTODEV_FLAG;
 375         if (!AceCadAutoDevProbe(local, 0))
 376         {
 377             xf86Msg(X_ERROR, "%s: unable to find device\n", local->name);
 378             goto SetupProc_fail;
 379         }
 380 #else
 381         xf86Msg(X_NOT_IMPLEMENTED, "%s: device autodetection not implemented, sorry\n", local->name);
 382         goto SetupProc_fail;
 383 #endif
 384     }
 385
 386     local->fd = xf86OpenSerial (local->options);
 387     if (local->fd == -1)
 388     {
 389         xf86Msg(X_ERROR, "%s: unable to open device\n", local->name);
 390         goto SetupProc_fail;
 391     }
 392     xf86ErrorFVerb( 6, "tty port opened successfully\n" );
 393
 394 #ifdef LINUX_INPUT
 395     if (IsUSBLine(local->fd)) {
 396         priv->flags |= USB_FLAG;
 397
 398         local->read_input = USBReadInput;
 399
 400         if (USBQueryHardware(local) != Success)
 401         {
 402             xf86Msg(X_ERROR, "%s: unable to query/initialize hardware (not an %s?).\n", local->name, local->type_name);
 403             goto SetupProc_fail;
 404         }
 405     } else
 406 #endif
 407     {
 408         local->read_input = ReadInput;
 409
 410         msgtype = X_DEFAULT;
 411         if (xf86FindOptionValue(local->options, "ReportSpeed")) {
 412             msgtype = X_CONFIG;
 413             speed = xf86SetIntOption(local->options, "ReportSpeed", 85 );
 414         } else {
 415             speed = 85;
 416         }
 417
 418         switch (speed)
 419         {
 420             case 120:
 421                 priv->acecadReportSpeed = 'Q';
 422                 break;
 423             case 85:
 424                 priv->acecadReportSpeed = 'R';
 425                 break;
 426             case 10:
 427                 priv->acecadReportSpeed = 'S';
 428                 break;
 429             case 2:
 430                 priv->acecadReportSpeed = 'T';
 431                 break;
 432             default:
 433                 priv->acecadReportSpeed = 'R';
 434                 speed = 85;
 435                 xf86Msg(X_ERROR, "%s: ReportSpeed value %d invalid. Possible values: 120, 85, 10, 2. Defaulting to 85\n", local->name, speed);
 436                 msgtype = X_DEFAULT;
 437         }
 438
 439         xf86Msg(msgtype, "%s report %d points/s\n", local->name, speed);
 440
 441         priv->buffer = XisbNew (local->fd, 200);
 442
 443         /*
 444          * Verify that hardware is attached and fuctional
 445          */
 446         if (QueryHardware(priv) != Success)
 447         {
 448             xf86Msg(X_ERROR, "%s: unable to query/initialize hardware (not an %s?).\n", local->name, local->type_name);
 449             goto SetupProc_fail;
 450         }
 451     }
 452
 453     s = xf86FindOptionValue(local->options, "Mode");
 454     msgtype = s ? X_CONFIG : X_DEFAULT;
 455     if (!(s && (xf86NameCmp(s, "relative") == 0)))
 456     {
 457         priv->flags |= ABSOLUTE_FLAG;
 458     }
 459
 460     xf86Msg(msgtype, "%s is in %s mode\n", local->name, (priv->flags & ABSOLUTE_FLAG) ? "absolute" : "relative");
 461     DBG (9, XisbTrace (priv->buffer, 1));
 462
 463     local->history_size = xf86SetIntOption(local->options , "HistorySize", 0);
 464
 465     xf86ProcessCommonOptions(local, local->options);
 466
 467     local->flags |= XI86_CONFIGURED;
 468
 469     if (local->fd != -1)
 470     {
 471         RemoveEnabledDevice (local->fd);
 472         if (priv->buffer)
 473         {
 474             XisbFree(priv->buffer);
 475             priv->buffer = NULL;
 476         }
 477         xf86CloseSerial(local->fd);
 478     }
 479     RemoveEnabledDevice (local->fd);
 480     local->fd = -1;
 481     return local;
 482
 483     /*
 484      * If something went wrong, cleanup and return NULL
 485      */
 486 SetupProc_fail:
 487     if ((local) && (local->fd))
 488         xf86CloseSerial (local->fd);
 489     if ((priv) && (priv->buffer))
 490         XisbFree (priv->buffer);
 491     if (priv)
 492         xfree (priv);
 493     return NULL;
 494 }
 495
 496 static Bool
 497 DeviceControl (DeviceIntPtr dev, int mode)
 498 {
 499     Bool RetValue;
 500
 501     switch (mode)
 502     {
 503         case DEVICE_INIT:
 504             DeviceInit(dev);
 505             RetValue = Success;
 506             break;
 507         case DEVICE_ON:
 508             RetValue = DeviceOn(dev);
 509             break;
 510         case DEVICE_OFF:
 511             RetValue = DeviceOff(dev);
 512             break;
 513         case DEVICE_CLOSE:
 514             RetValue = DeviceClose(dev);
 515             break;
 516         default:
 517             RetValue = BadValue;
 518     }
 519
 520     return RetValue;
 521 }
 522
 523 static Bool
 524 DeviceOn (DeviceIntPtr dev)
 525 {
 526     char buffer[256];
 527     LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
 528     AceCadPrivatePtr priv = (AceCadPrivatePtr) (local->private);
 529
 530     xf86MsgVerb(X_INFO, 4, "%s Device On\n", local->name);
 531
 532     local->fd = xf86OpenSerial(local->options);
 533     if (local->fd == -1)
 534     {
 535         xf86Msg(X_WARNING, "%s: cannot open input device %s: %s\n", local->name, xf86FindOptionValue(local->options, "Device"), strerror(errno));
 536         priv->flags &= ~AVAIL_FLAG;
 537 #ifdef LINUX_INPUT
 538         if ((priv->flags & AUTODEV_FLAG) && AceCadAutoDevProbe(local, 4))
 539             local->fd = xf86OpenSerial(local->options);
 540         if (local->fd == -1)
 541 #endif
 542             return !Success;
 543     }
 544     priv->flags |= AVAIL_FLAG;
 545
 546
 547     if (!(priv->flags & USB_FLAG)) {
 548         priv->buffer = XisbNew(local->fd, 200);
 549         if (!priv->buffer)
 550         {
 551             xf86CloseSerial(local->fd);
 552             local->fd = -1;
 553             return !Success;
 554         }
 555
 556         /* Rets qu'a l'envoyer a la tablette */
 557         sprintf(buffer, "%s%c%c%c%c", acecad_initstr, priv->acecadReportSpeed, ACECAD_INCREMENT, 32 + priv->acecadInc, (priv->flags & ABSOLUTE_FLAG)? ACECAD_ABSOLUTE: ACECAD_RELATIVE);
 558         XisbWrite (priv->buffer, (unsigned char *)buffer, strlen(buffer));
 559     }
 560
 561     xf86FlushInput(local->fd);
 562     xf86AddEnabledDevice (local);
 563     dev->public.on = TRUE;
 564     return Success;
 565 }
 566
 567 static Bool
 568 DeviceOff (DeviceIntPtr dev)
 569 {
 570     LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
 571     AceCadPrivatePtr priv = (AceCadPrivatePtr) (local->private);
 572
 573     xf86MsgVerb(X_INFO, 4, "%s Device Off\n", local->name);
 574
 575     if (local->fd != -1)
 576     {
 577         RemoveEnabledDevice (local->fd);
 578         if (priv->buffer)
 579         {
 580             XisbFree(priv->buffer);
 581             priv->buffer = NULL;
 582         }
 583         xf86CloseSerial(local->fd);
 584     }
 585
 586
 587     xf86RemoveEnabledDevice (local);
 588     dev->public.on = FALSE;
 589     return Success;
 590 }
 591
 592 static Bool
 593 DeviceClose (DeviceIntPtr dev)
 594 {
 595     LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
 596
 597     xf86MsgVerb(X_INFO, 4, "%s Device Close\n", local->name);
 598
 599     return Success;
 600 }
 601
 602 static void
 603 ControlProc(DeviceIntPtr dev, PtrCtrl *ctrl)
 604 {
 605     LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
 606
 607     xf86MsgVerb(X_INFO, 4, "%s Control Proc\n", local->name);
 608 }
 609
 610 static Bool
 611 DeviceInit (DeviceIntPtr dev)
 612 {
 613     int rx, ry;
 614     LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
 615     AceCadPrivatePtr priv = (AceCadPrivatePtr) (local->private);
 616     unsigned char map[] =
 617     {0, 1, 2, 3};
 618
 619     xf86MsgVerb(X_INFO, 4, "%s Init\n", local->name);
 620
 621     /* 3 boutons */
 622     if (InitButtonClassDeviceStruct (dev, 3, map) == FALSE)
 623     {
 624         xf86Msg(X_ERROR, "%s: unable to allocate ButtonClassDeviceStruct\n", local->name);
 625         return !Success;
 626     }
 627
 628     if (InitFocusClassDeviceStruct (dev) == FALSE)
 629     {
 630         xf86Msg(X_ERROR, "%s: unable to allocate FocusClassDeviceStruct\n", local->name);
 631         return !Success;
 632     }
 633
 634     if (InitPtrFeedbackClassDeviceStruct(dev, ControlProc) == FALSE) {
 635         xf86Msg(X_ERROR, "%s: unable to init ptr feedback\n", local->name);
 636         return !Success;
 637     }
 638
 639
 640     /* 3 axes */
 641     if (InitValuatorClassDeviceStruct (dev, 3, xf86GetMotionEvents,
 642                 local->history_size,
 643                 ((priv->flags & ABSOLUTE_FLAG)? Absolute: Relative)|OutOfProximity)
 644             == FALSE)
 645     {
 646         xf86Msg(X_ERROR, "%s: unable to allocate ValuatorClassDeviceStruct\n", local->name);
 647         return !Success;
 648     }
 649     else
 650     {
 651
 652         InitValuatorAxisStruct(dev,
 653                 0,
 654                 0,                      /* min val */
 655                 priv->acecadMaxX,       /* max val */
 656                 1000,                   /* resolution */
 657                 0,                      /* min_res */
 658                 1000);                  /* max_res */
 659         InitValuatorAxisStruct(dev,
 660                 1,
 661                 0,                      /* min val */
 662                 priv->acecadMaxY,       /* max val */
 663                 1000,                   /* resolution */
 664                 0,                      /* min_res */
 665                 1000);                  /* max_res */
 666         InitValuatorAxisStruct(dev,
 667                 2,
 668                 0,                      /* min val */
 669                 priv->acecadMaxZ,       /* max val */
 670                 1000,                   /* resolution */
 671                 0,                      /* min_res */
 672                 1000);          /* max_res */
 673
 674     }
 675
 676     if (InitProximityClassDeviceStruct (dev) == FALSE)
 677     {
 678         xf86Msg(X_ERROR, "%s: unable to allocate ProximityClassDeviceStruct\n", local->name);
 679         return !Success;
 680     }
 681
 682     xf86MotionHistoryAllocate (local);
 683
 684
 685     /* On ne peut pas calculer l'increment avant, faute d'ecran pour
 686        connaitre la taille... */
 687
 688     if (priv->acecadInc > 95)
 689         priv->acecadInc = 95;
 690     if (priv->acecadInc < 1)
 691     {
 692         /* guess the best increment value given video mode */
 693         rx = priv->acecadMaxX / screenInfo.screens[0]->width;
 694         ry = priv->acecadMaxY / screenInfo.screens[0]->height;
 695         if (rx < ry)
 696             priv->acecadInc = rx;
 697         else
 698             priv->acecadInc = ry;
 699         if (priv->acecadInc < 1)
 700             priv->acecadInc = 1;
 701     }
 702
 703     xf86Msg(X_INFO, "%s Increment: %d\n", local->name, priv->acecadInc);
 704
 705     return Success;
 706 }
 707
 708 static void
 709 ReadInput (LocalDevicePtr local)
 710 {
 711     int x, y, z;
 712     int prox, buttons;
 713     int is_core_pointer, is_absolute;
 714     AceCadPrivatePtr priv = (AceCadPrivatePtr) (local->private);
 715
 716     /*xf86Msg(X_INFO, "ACECAD Tablet Read Input\n");*/
 717
 718     is_absolute = (priv->flags & ABSOLUTE_FLAG);
 719     is_core_pointer = xf86IsCorePointer(local->dev);
 720
 721     /*
 722      * set blocking to -1 on the first call because we know there is data to
 723      * read. Xisb automatically clears it after one successful read so that
 724      * succeeding reads are preceeded buy a select with a 0 timeout to prevent
 725      * read from blocking indefinately.
 726      */
 727     XisbBlockDuration (priv->buffer, -1);
 728
 729     while (AceCadGetPacket (priv) == Success)
 730     {
 731         x = (int)priv->packet[1] | ((int)priv->packet[2] << 7);
 732         y = (int)priv->packet[3] | ((int)priv->packet[4] << 7);
 733
 734         if (!(priv->flags & ABSOLUTE_FLAG))
 735         {
 736             x = priv->packet[0] & XSIGN_BIT? x:-x;
 737             y = priv->packet[0] & YSIGN_BIT? y:-y;
 738         }
 739         else
 740         {
 741             y = priv->acecadMaxY - y ;
 742         }
 743
 744
 745         z = ((int)priv->packet[5] << 2) |
 746             (((int)priv->packet[6] & 0x01) << 1) |
 747             (((int)priv->packet[6] & 0x10) >> 4);
 748
 749         buttons = ((int)priv->packet[0] & 0x07) |
 750             ((int)priv->packet[6] & 0x02 << 2);
 751
 752         prox = (priv->packet[0] & PROXIMITY_BIT)? 0: 1;
 753
 754         if (prox)
 755         {
 756             if (!(priv->acecadOldProximity))
 757                 if (!is_core_pointer)
 758                 {
 759                     /*xf86Msg(X_INFO, "ACECAD Tablet ProxIN %d %d %d\n",x, y, z);*/
 760                     xf86PostProximityEvent(local->dev, 1, 0, 3 , x, y, z);
 761                 }
 762
 763             if ((is_absolute && ((priv->acecadOldX != x) || (priv->acecadOldY != y) || (priv->acecadOldZ != z)))
 764                     || (!is_absolute && (x || y)))
 765             {
 766                 if (is_absolute || priv->acecadOldProximity)
 767                 {
 768                     /*xf86Msg(X_INFO, "ACECAD Tablet Motion %d %d %d\n", x, y, z);*/
 769                     xf86PostMotionEvent(local->dev, is_absolute, 0, 3, x, y, z);
 770                 }
 771             }
 772
 773             if (priv->acecadOldButtons != buttons)
 774             {
 775                 int delta = buttons ^ priv->acecadOldButtons;
 776                 while (delta)
 777                 {
 778                     int id = ffs(delta);
 779                     delta &= ~(1 << (id-1));
 780
 781                     /*xf86Msg(X_INFO, "ACECAD Tablet Button %d 0x%x\n",id,(buttons&(1<<(id-1))));*/
 782                     xf86PostButtonEvent(local->dev, is_absolute, id, (buttons&(1<<(id-1))), 0, 3, x, y,z);
 783                 }
 784             }
 785
 786             priv->acecadOldButtons = buttons;
 787             priv->acecadOldX = x;
 788             priv->acecadOldY = y;
 789             priv->acecadOldZ = z;
 790             priv->acecadOldProximity = prox;
 791         }
 792         else
 793         {
 794             if (!is_core_pointer)
 795                 if (priv->acecadOldProximity)
 796                 {
 797                     /*xf86Msg(X_INFO, "ACECAD Tablet ProxOUT %d %d %d\n",x, y, z);*/
 798                     xf86PostProximityEvent(local->dev, 0, 0, 3, x,y,z);
 799                 }
 800             priv->acecadOldProximity = 0;
 801         }
 802     }
 803     /*xf86Msg(X_INFO, "ACECAD Tablet Sortie Read Input\n");*/
 804 }
 805
 806 #ifdef LINUX_INPUT
 807 #define set_bit(byte,nb,bit)    (bit ? byte | (1<<nb) : byte & (~(1<<nb)))
 808 static void
 809 USBReadInput (LocalDevicePtr local)
 810 {
 811     int len;
 812     struct input_event * event;
 813     char eventbuf[sizeof(struct input_event) * MAX_EVENTS];
 814     AceCadPrivatePtr priv = (AceCadPrivatePtr) (local->private);
 815     int x = priv->acecadOldX;
 816     int y = priv->acecadOldY;
 817     int z = priv->acecadOldZ;
 818     int prox = priv->acecadOldProximity;
 819     int buttons = priv->acecadOldButtons;
 820     int is_core_pointer = xf86IsCorePointer(local->dev);
 821     /* Is autodev active? */
 822     int autodev = priv->flags & AUTODEV_FLAG;
 823     /* Was the device available last time we checked? */
 824     int avail = priv->flags & AVAIL_FLAG;
 825
 826     SYSCALL(len = read(local->fd, eventbuf, sizeof(eventbuf)));
 827
 828     if (len <= 0) {
 829         if (avail) {
 830             xf86Msg(X_ERROR, "%s: error reading device %s: %s\n", local->name, xf86FindOptionValue(local->options, "Device"), strerror(errno));
 831         }
 832         if (NOTAVAIL) {
 833             priv->flags &= ~AVAIL_FLAG;
 834             if(autodev) {
 835                 if (AceCadAutoDevProbe(local, 4)) {
 836                     DeviceOff(local->dev);
 837                     DeviceOn(local->dev);
 838                 }
 839             }
 840         }
 841         return;
 842     } else {
 843         if (!avail) {
 844             /* If the device wasn't available last time we checked */
 845             xf86Msg(X_INFO, "%s: device %s is available again\n", local->name, xf86FindOptionValue(local->options, "Device"));
 846             priv->flags |= AVAIL_FLAG;
 847         }
 848     }
 849
 850     for (event = (struct input_event *)eventbuf;
 851             event < (struct input_event *)(eventbuf+len); event++) {
 852
 853         switch (event->type) {
 854             case EV_SYN: /* 2.6.x */
 855                 if (event->code != SYN_REPORT)
 856                     xf86Msg(X_ERROR, "%s: unknown EV_SYN code %d\n", local->name, event->code);
 857                 break;
 858             case EV_ABS:
 859                 switch (event->code) {
 860                     case ABS_X:
 861                         x = event->value;
 862                         break;
 863
 864                     case ABS_Y:
 865                         y = event->value;
 866                         break;
 867
 868                     case ABS_PRESSURE:
 869                         z = event->value;
 870                         break;
 871
 872                     case ABS_MISC:
 873                         break;
 874
 875                 }
 876                 break; /* EV_ABS */
 877
 878             case EV_KEY:
 879                 switch (event->code) {
 880                     case BTN_TOOL_PEN:
 881                         prox = event->value;
 882                         break;
 883
 884                     case BTN_TOUCH:
 885                         buttons = set_bit(buttons,0,event->value);
 886                         break;
 887
 888                     case BTN_STYLUS:
 889                         buttons = set_bit(buttons,1,event->value);
 890                         break;
 891
 892                     case BTN_STYLUS2:
 893                         buttons = set_bit(buttons,2,event->value);
 894                         break;
 895                 }
 896                 break; /* EV_KEY */
 897             default:
 898                 xf86Msg(X_ERROR, "%s: unknown event type/code %d/%d\n", local->name, event->type, event->code);
 899         } /* switch event->type */
 900
 901         /* Linux Kernel 2.6.x sends EV_SYN/SYN_REPORT as an event terminator,
 902          * whereas 2.4.x sends EV_ABS/ABS_MISC. We have to support both.
 903          */
 904         if (!(  (event->type == EV_SYN && event->code == SYN_REPORT) ||
 905                     (event->type == EV_ABS && event->code == ABS_MISC)
 906              )) {
 907             continue;
 908         }
 909
 910         if (prox)
 911         {
 912             if (!(priv->acecadOldProximity))
 913                 if (!is_core_pointer)
 914                 {
 915                     xf86PostProximityEvent(local->dev, 1, 0, 3 , x, y, z);
 916                 }
 917
 918
 919             xf86PostMotionEvent(local->dev, 1, 0, 3, x, y, z);
 920
 921             if (priv->acecadOldButtons != buttons)
 922             {
 923                 int delta = buttons ^ priv->acecadOldButtons;
 924                 while (delta)
 925                 {
 926                     int id = ffs(delta);
 927                     delta &= ~(1 << (id-1));
 928
 929                     xf86PostButtonEvent(local->dev, 1, id, (buttons&(1<<(id-1))), 0, 3, x, y,z);
 930                 }
 931             }
 932         }
 933         else
 934         {
 935             if (!is_core_pointer)
 936                 if (priv->acecadOldProximity)
 937                 {
 938                     xf86PostProximityEvent(local->dev, 0, 0, 3, x,y,z);
 939                 }
 940             priv->acecadOldProximity = 0;
 941         }
 942
 943         priv->acecadOldButtons = buttons;
 944         priv->acecadOldX = x;
 945         priv->acecadOldY = y;
 946         priv->acecadOldZ = z;
 947         priv->acecadOldProximity = prox;
 948     }
 949     /*xf86Msg(X_INFO, "ACECAD Tablet Sortie Read Input\n");*/
 950 }
 951 #endif
 952
 953 static void
 954 CloseProc (LocalDevicePtr local)
 955 {
 956 }
 957
 958 /*
 959  * The ConvertProc function may need to be tailored for your device.
 960  * This function converts the device's valuator outputs to x and y coordinates
 961  * to simulate mouse events.
 962  */
 963 static Bool
 964 ConvertProc (LocalDevicePtr local, int first, int num,
 965         int v0, int v1, int v2, int v3, int v4, int v5,
 966         int *x, int *y)
 967 {
 968     AceCadPrivatePtr priv = (AceCadPrivatePtr)(local->private);
 969
 970     *x = v0 * screenInfo.screens[0]->width / priv->acecadMaxX;
 971     *y = v1 * screenInfo.screens[0]->height / priv->acecadMaxY;
 972     return TRUE;
 973 }
 974
 975
 976 static Bool
 977 ReverseConvertProc (LocalDevicePtr local,
 978         int x, int  y,
 979         int *valuators)
 980 {
 981     AceCadPrivatePtr priv = (AceCadPrivatePtr)(local->private);
 982
 983     valuators[0] = x * priv->acecadMaxX / screenInfo.screens[0]->width;
 984     valuators[1] = y * priv->acecadMaxY / screenInfo.screens[0]->height;
 985
 986     return TRUE;
 987 }
 988
 989
 990 #define WriteString(str)\
 991     XisbWrite (priv->buffer, (unsigned char *)(str), strlen(str))
 992
 993
 994 static Bool
 995 QueryHardware (AceCadPrivatePtr priv)
 996 {
 997
 998     /* Reset */
 999     WriteString("z0");
1000
1001     /* Wait */
1002     milisleep (250);
1003
1004     /* Prompt Mode in order to not be disturbed */
1005     WriteString(ACECAD_PROMPT_MODE);
1006
1007     /* Flush */
1008     while (XisbRead(priv->buffer) >= 0);
1009
1010     /* Ask for Config packet*/
1011     WriteString(ACECAD_CONFIG);
1012
1013     /* Read the packet */
1014     XisbBlockDuration (priv->buffer, 1000000);
1015     NewPacket (priv);
1016
1017     /*xf86Msg(X_CONFIG, "ACECAD Tablet init envoyé \n");*/
1018
1019     if ((AceCadGetPacket (priv) == Success))
1020     {
1021         priv->acecadMaxX = (int)priv->packet[1] + ((int)priv->packet[2] << 7);
1022         priv->acecadMaxY = (int)priv->packet[3] + ((int)priv->packet[4] << 7);
1023         priv->acecadMaxZ = 512;
1024         xf86Msg(X_PROBED, "ACECAD Tablet MaxX:%d MaxY:%d\n", priv->acecadMaxX, priv->acecadMaxY);
1025     }
1026     else
1027         return !Success;
1028
1029     /*xf86Msg(X_INFO, "ACECAD Tablet query hardware fini \n");*/
1030     return Success;
1031 }
1032
1033 #define BITS_PER_LONG (sizeof(long) * 8)
1034 #define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
1035 #define test_bit(bit, array)    ((array[LONG(bit)] >> OFF(bit)) & 1)
1036 #define OFF(x)  ((x)%BITS_PER_LONG)
1037 #define LONG(x) ((x)/BITS_PER_LONG)
1038
1039 #ifdef LINUX_INPUT
1040 static Bool
1041 USBQueryHardware (LocalDevicePtr local)
1042 {
1043     AceCadPrivatePtr    priv = (AceCadPrivatePtr) local->private;
1044     unsigned long       bit[EV_MAX][NBITS(KEY_MAX)];
1045     int                 i, j;
1046     int                 abs[5];
1047     char                name[256] = "Unknown";
1048
1049     ioctl(local->fd, EVIOCGNAME(sizeof(name)), name);
1050     xf86MsgVerb(X_PROBED, 4, "Kernel Input device name: \"%s\"\n", name);
1051
1052     memset(bit, 0, sizeof(bit));
1053     ioctl(local->fd, EVIOCGBIT(0, EV_MAX), bit[0]);
1054
1055     for (i = 0; i < EV_MAX; i++)
1056         if (test_bit(i, bit[0])) {
1057             ioctl(local->fd, EVIOCGBIT(i, KEY_MAX), bit[i]);
1058             for (j = 0; j < KEY_MAX; j++)
1059                 if (test_bit(j, bit[i])) {
1060                     if (i == EV_ABS) {
1061                         ioctl(local->fd, EVIOCGABS(j), abs);
1062                         switch (j) {
1063                             case ABS_X:
1064                                 priv->acecadMaxX = abs[2];
1065                                 break;
1066
1067                             case ABS_Y:
1068                                 priv->acecadMaxY = abs[2];
1069                                 break;
1070
1071                             case ABS_PRESSURE:
1072                                 priv->acecadMaxZ = abs[2];
1073                                 break;
1074                         }
1075                     }
1076                 }
1077         }
1078
1079     xf86Msg(X_PROBED, "ACECAD Tablet MaxX:%d MaxY:%d MaxZ:%d\n", priv->acecadMaxX, priv->acecadMaxY, priv->acecadMaxZ);
1080     return Success;
1081 }
1082 #endif
1083
1084 static void
1085 NewPacket (AceCadPrivatePtr priv)
1086 {
1087     priv->packeti = 0;
1088 }
1089
1090 static Bool
1091 AceCadGetPacket (AceCadPrivatePtr priv)
1092 {
1093     int count = 0;
1094     int c = 0;
1095
1096     while((c = XisbRead(priv->buffer)) >= 0 )
1097     {
1098
1099         /*
1100          * fail after 500 bytes so the server doesn't hang forever if a
1101          * device sends bad data.
1102          */
1103         if (count++ > 500)
1104         {
1105             NewPacket (priv);
1106             return !Success;
1107         }
1108
1109         if (c & PHASING_BIT)
1110         {
1111             NewPacket(priv);
1112
1113             /*xf86Msg(X_CONFIG, "Push %2.2x\n",(char) c);*/
1114             XisbBlockDuration (priv->buffer, 10000);
1115             priv->packet[priv->packeti++] = c;
1116             count = ACECAD_PACKET_SIZE - 1;
1117             while (count-- && (c = XisbRead(priv->buffer)) >= 0)
1118             {
1119                 /*xf86Msg(X_INFO, "Push %2.2x\n",(char) c);*/
1120                 priv->packet[priv->packeti++] = c;
1121             }
1122             XisbBlockDuration (priv->buffer, 0);
1123             if(c > 0)
1124                 return Success;
1125         }
1126     }
1127     return !Success;
1128 }