drivers/input/touchscreen/usbtouchscreen.c

   1 /******************************************************************************
   2  * usbtouchscreen.c
   3  * Driver for USB Touchscreens, supporting those devices:
   4  *  - eGalax Touchkit
   5  *    includes eTurboTouch CT-410/510/700
   6  *  - 3M/Microtouch  EX II series
   7  *  - ITM
   8  *  - PanJit TouchSet
   9  *  - eTurboTouch
  10  *  - Gunze AHL61
  11  *  - DMC TSC-10/25
  12  *  - IRTOUCHSYSTEMS/UNITOP
  13  *  - IdealTEK URTC1000
  14  *  - General Touch
  15  *  - GoTop Super_Q2/GogoPen/PenPower tablets
  16  *  - JASTEC USB touch controller/DigiTech DTR-02U
  17  *  - Zytronic capacitive touchscreen
  18  *  - NEXIO/iNexio
  19  *  - Elo TouchSystems 2700 IntelliTouch
  20  *  - EasyTouch USB Dual/Multi touch controller from Data Modul
  21  *
  22  * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
  23  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
  24  *
  25  * This program is free software; you can redistribute it and/or
  26  * modify it under the terms of the GNU General Public License as
  27  * published by the Free Software Foundation; either version 2 of the
  28  * License, or (at your option) any later version.
  29  *
  30  * This program is distributed in the hope that it will be useful, but
  31  * WITHOUT ANY WARRANTY; without even the implied warranty of
  32  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  33  * General Public License for more details.
  34  *
  35  * You should have received a copy of the GNU General Public License
  36  * along with this program; if not, write to the Free Software
  37  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  38  *
  39  * Driver is based on touchkitusb.c
  40  * - ITM parts are from itmtouch.c
  41  * - 3M parts are from mtouchusb.c
  42  * - PanJit parts are from an unmerged driver by Lanslott Gish
  43  * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
  44  *   driver from Marius Vollmer
  45  *
  46  *****************************************************************************/
  47
  48 //#define DEBUG
  49
  50 #include <linux/kernel.h>
  51 #include <linux/slab.h>
  52 #include <linux/input.h>
  53 #include <linux/module.h>
  54 #include <linux/usb.h>
  55 #include <linux/usb/input.h>
  56 #include <linux/hid.h>
  57
  58
  59 #define DRIVER_VERSION          "v0.6"
  60 #define DRIVER_AUTHOR           "Daniel Ritz <daniel.ritz@gmx.ch>"
  61 #define DRIVER_DESC             "USB Touchscreen Driver"
  62
  63 static bool swap_xy;
  64 module_param(swap_xy, bool, 0644);
  65 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
  66
  67 static bool hwcalib_xy;
  68 module_param(hwcalib_xy, bool, 0644);
  69 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
  70
  71 /* device specifc data/functions */
  72 struct usbtouch_usb;
  73 struct usbtouch_device_info {
  74         int min_xc, max_xc;
  75         int min_yc, max_yc;
  76         int min_press, max_press;
  77         int rept_size;
  78
  79         /*
  80          * Always service the USB devices irq not just when the input device is
  81          * open. This is useful when devices have a watchdog which prevents us
  82          * from periodically polling the device. Leave this unset unless your
  83          * touchscreen device requires it, as it does consume more of the USB
  84          * bandwidth.
  85          */
  86         bool irq_always;
  87
  88         void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
  89
  90         /*
  91          * used to get the packet len. possible return values:
  92          * > 0: packet len
  93          * = 0: skip one byte
  94          * < 0: -return value more bytes needed
  95          */
  96         int  (*get_pkt_len) (unsigned char *pkt, int len);
  97
  98         int  (*read_data)   (struct usbtouch_usb *usbtouch, unsigned char *pkt);
  99         int  (*alloc)       (struct usbtouch_usb *usbtouch);
 100         int  (*init)        (struct usbtouch_usb *usbtouch);
 101         void (*exit)        (struct usbtouch_usb *usbtouch);
 102 };
 103
 104 /* a usbtouch device */
 105 struct usbtouch_usb {
 106         unsigned char *data;
 107         dma_addr_t data_dma;
 108         int data_size;
 109         unsigned char *buffer;
 110         int buf_len;
 111         struct urb *irq;
 112         struct usb_interface *interface;
 113         struct input_dev *input;
 114         struct usbtouch_device_info *type;
 115         char name[128];
 116         char phys[64];
 117         void *priv;
 118
 119         int x, y;
 120         int touch, press;
 121 };
 122
 123
 124 /* device types */
 125 enum {
 126         DEVTYPE_IGNORE = -1,
 127         DEVTYPE_EGALAX,
 128         DEVTYPE_PANJIT,
 129         DEVTYPE_3M,
 130         DEVTYPE_ITM,
 131         DEVTYPE_ETURBO,
 132         DEVTYPE_GUNZE,
 133         DEVTYPE_DMC_TSC10,
 134         DEVTYPE_IRTOUCH,
 135         DEVTYPE_IRTOUCH_HIRES,
 136         DEVTYPE_IDEALTEK,
 137         DEVTYPE_GENERAL_TOUCH,
 138         DEVTYPE_GOTOP,
 139         DEVTYPE_JASTEC,
 140         DEVTYPE_E2I,
 141         DEVTYPE_ZYTRONIC,
 142         DEVTYPE_TC45USB,
 143         DEVTYPE_NEXIO,
 144         DEVTYPE_ELO,
 145         DEVTYPE_ETOUCH,
 146 };
 147
 148 #define USB_DEVICE_HID_CLASS(vend, prod) \
 149         .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
 150                 | USB_DEVICE_ID_MATCH_DEVICE, \
 151         .idVendor = (vend), \
 152         .idProduct = (prod), \
 153         .bInterfaceClass = USB_INTERFACE_CLASS_HID
 154
 155 static const struct usb_device_id usbtouch_devices[] = {
 156 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 157         /* ignore the HID capable devices, handled by usbhid */
 158         {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
 159         {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
 160
 161         /* normal device IDs */
 162         {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
 163         {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
 164         {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
 165         {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
 166         {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
 167         {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
 168         {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
 169 #endif
 170
 171 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 172         {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
 173         {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
 174         {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
 175         {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
 176 #endif
 177
 178 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 179         {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
 180 #endif
 181
 182 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 183         {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
 184         {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
 185 #endif
 186
 187 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 188         {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
 189 #endif
 190
 191 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 192         {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
 193 #endif
 194
 195 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 196         {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
 197 #endif
 198
 199 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 200         {USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 201         {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 202         {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 203         {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
 204 #endif
 205
 206 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 207         {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
 208 #endif
 209
 210 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 211         {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
 212 #endif
 213
 214 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
 215         {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
 216         {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
 217         {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
 218 #endif
 219
 220 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
 221         {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
 222 #endif
 223
 224 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
 225         {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
 226 #endif
 227
 228 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
 229         {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
 230 #endif
 231
 232 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
 233         /* TC5UH */
 234         {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
 235         /* TC4UM */
 236         {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
 237 #endif
 238
 239 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
 240         /* data interface only */
 241         {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
 242                 .driver_info = DEVTYPE_NEXIO},
 243         {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
 244                 .driver_info = DEVTYPE_NEXIO},
 245 #endif
 246
 247 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
 248         {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
 249 #endif
 250
 251 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
 252         {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
 253 #endif
 254
 255         {}
 256 };
 257
 258
 259 /*****************************************************************************
 260  * e2i Part
 261  */
 262
 263 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
 264 static int e2i_init(struct usbtouch_usb *usbtouch)
 265 {
 266         int ret;
 267         struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
 268
 269         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 270                               0x01, 0x02, 0x0000, 0x0081,
 271                               NULL, 0, USB_CTRL_SET_TIMEOUT);
 272
 273         dev_dbg(&usbtouch->interface->dev,
 274                 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
 275                 __func__, ret);
 276         return ret;
 277 }
 278
 279 static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 280 {
 281         int tmp = (pkt[0] << 8) | pkt[1];
 282         dev->x  = (pkt[2] << 8) | pkt[3];
 283         dev->y  = (pkt[4] << 8) | pkt[5];
 284
 285         tmp = tmp - 0xA000;
 286         dev->touch = (tmp > 0);
 287         dev->press = (tmp > 0 ? tmp : 0);
 288
 289         return 1;
 290 }
 291 #endif
 292
 293
 294 /*****************************************************************************
 295  * eGalax part
 296  */
 297
 298 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 299
 300 #ifndef MULTI_PACKET
 301 #define MULTI_PACKET
 302 #endif
 303
 304 #define EGALAX_PKT_TYPE_MASK            0xFE
 305 #define EGALAX_PKT_TYPE_REPT            0x80
 306 #define EGALAX_PKT_TYPE_DIAG            0x0A
 307
 308 static int egalax_init(struct usbtouch_usb *usbtouch)
 309 {
 310         int ret, i;
 311         unsigned char *buf;
 312         struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
 313
 314         /*
 315          * An eGalax diagnostic packet kicks the device into using the right
 316          * protocol.  We send a "check active" packet.  The response will be
 317          * read later and ignored.
 318          */
 319
 320         buf = kmalloc(3, GFP_KERNEL);
 321         if (!buf)
 322                 return -ENOMEM;
 323
 324         buf[0] = EGALAX_PKT_TYPE_DIAG;
 325         buf[1] = 1;     /* length */
 326         buf[2] = 'A';   /* command - check active */
 327
 328         for (i = 0; i < 3; i++) {
 329                 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 330                                       0,
 331                                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 332                                       0, 0, buf, 3,
 333                                       USB_CTRL_SET_TIMEOUT);
 334                 if (ret >= 0) {
 335                         ret = 0;
 336                         break;
 337                 }
 338                 if (ret != -EPIPE)
 339                         break;
 340         }
 341
 342         kfree(buf);
 343
 344         return ret;
 345 }
 346
 347 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 348 {
 349         if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
 350                 return 0;
 351
 352         dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
 353         dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
 354         dev->touch = pkt[0] & 0x01;
 355
 356         return 1;
 357 }
 358
 359 static int egalax_get_pkt_len(unsigned char *buf, int len)
 360 {
 361         switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
 362         case EGALAX_PKT_TYPE_REPT:
 363                 return 5;
 364
 365         case EGALAX_PKT_TYPE_DIAG:
 366                 if (len < 2)
 367                         return -1;
 368
 369                 return buf[1] + 2;
 370         }
 371
 372         return 0;
 373 }
 374 #endif
 375
 376 /*****************************************************************************
 377  * EasyTouch part
 378  */
 379
 380 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
 381
 382 #ifndef MULTI_PACKET
 383 #define MULTI_PACKET
 384 #endif
 385
 386 #define ETOUCH_PKT_TYPE_MASK            0xFE
 387 #define ETOUCH_PKT_TYPE_REPT            0x80
 388 #define ETOUCH_PKT_TYPE_REPT2           0xB0
 389 #define ETOUCH_PKT_TYPE_DIAG            0x0A
 390
 391 static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 392 {
 393         if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
 394                 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
 395                 return 0;
 396
 397         dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
 398         dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
 399         dev->touch = pkt[0] & 0x01;
 400
 401         return 1;
 402 }
 403
 404 static int etouch_get_pkt_len(unsigned char *buf, int len)
 405 {
 406         switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
 407         case ETOUCH_PKT_TYPE_REPT:
 408         case ETOUCH_PKT_TYPE_REPT2:
 409                 return 5;
 410
 411         case ETOUCH_PKT_TYPE_DIAG:
 412                 if (len < 2)
 413                         return -1;
 414
 415                 return buf[1] + 2;
 416         }
 417
 418         return 0;
 419 }
 420 #endif
 421
 422 /*****************************************************************************
 423  * PanJit Part
 424  */
 425 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 426 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 427 {
 428         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
 429         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
 430         dev->touch = pkt[0] & 0x01;
 431
 432         return 1;
 433 }
 434 #endif
 435
 436
 437 /*****************************************************************************
 438  * 3M/Microtouch Part
 439  */
 440 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 441
 442 #define MTOUCHUSB_ASYNC_REPORT          1
 443 #define MTOUCHUSB_RESET                 7
 444 #define MTOUCHUSB_REQ_CTRLLR_ID         10
 445
 446 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 447 {
 448         if (hwcalib_xy) {
 449                 dev->x = (pkt[4] << 8) | pkt[3];
 450                 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
 451         } else {
 452                 dev->x = (pkt[8] << 8) | pkt[7];
 453                 dev->y = (pkt[10] << 8) | pkt[9];
 454         }
 455         dev->touch = (pkt[2] & 0x40) ? 1 : 0;
 456
 457         return 1;
 458 }
 459
 460 static int mtouch_init(struct usbtouch_usb *usbtouch)
 461 {
 462         int ret, i;
 463         struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
 464
 465         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 466                               MTOUCHUSB_RESET,
 467                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 468                               1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 469         dev_dbg(&usbtouch->interface->dev,
 470                 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
 471                 __func__, ret);
 472         if (ret < 0)
 473                 return ret;
 474         msleep(150);
 475
 476         for (i = 0; i < 3; i++) {
 477                 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 478                                       MTOUCHUSB_ASYNC_REPORT,
 479                                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 480                                       1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
 481                 dev_dbg(&usbtouch->interface->dev,
 482                         "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
 483                         __func__, ret);
 484                 if (ret >= 0)
 485                         break;
 486                 if (ret != -EPIPE)
 487                         return ret;
 488         }
 489
 490         /* Default min/max xy are the raw values, override if using hw-calib */
 491         if (hwcalib_xy) {
 492                 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
 493                 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
 494         }
 495
 496         return 0;
 497 }
 498 #endif
 499
 500
 501 /*****************************************************************************
 502  * ITM Part
 503  */
 504 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 505 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 506 {
 507         int touch;
 508         /*
 509          * ITM devices report invalid x/y data if not touched.
 510          * if the screen was touched before but is not touched any more
 511          * report touch as 0 with the last valid x/y data once. then stop
 512          * reporting data until touched again.
 513          */
 514         dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
 515
 516         touch = ~pkt[7] & 0x20;
 517         if (!touch) {
 518                 if (dev->touch) {
 519                         dev->touch = 0;
 520                         return 1;
 521                 }
 522
 523                 return 0;
 524         }
 525
 526         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
 527         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
 528         dev->touch = touch;
 529
 530         return 1;
 531 }
 532 #endif
 533
 534
 535 /*****************************************************************************
 536  * eTurboTouch part
 537  */
 538 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 539 #ifndef MULTI_PACKET
 540 #define MULTI_PACKET
 541 #endif
 542 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 543 {
 544         unsigned int shift;
 545
 546         /* packets should start with sync */
 547         if (!(pkt[0] & 0x80))
 548                 return 0;
 549
 550         shift = (6 - (pkt[0] & 0x03));
 551         dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
 552         dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
 553         dev->touch = (pkt[0] & 0x10) ? 1 : 0;
 554
 555         return 1;
 556 }
 557
 558 static int eturbo_get_pkt_len(unsigned char *buf, int len)
 559 {
 560         if (buf[0] & 0x80)
 561                 return 5;
 562         if (buf[0] == 0x01)
 563                 return 3;
 564         return 0;
 565 }
 566 #endif
 567
 568
 569 /*****************************************************************************
 570  * Gunze part
 571  */
 572 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 573 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 574 {
 575         if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
 576                 return 0;
 577
 578         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
 579         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
 580         dev->touch = pkt[0] & 0x20;
 581
 582         return 1;
 583 }
 584 #endif
 585
 586 /*****************************************************************************
 587  * DMC TSC-10/25 Part
 588  *
 589  * Documentation about the controller and it's protocol can be found at
 590  *   http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
 591  *   http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
 592  */
 593 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 594
 595 /* supported data rates. currently using 130 */
 596 #define TSC10_RATE_POINT        0x50
 597 #define TSC10_RATE_30           0x40
 598 #define TSC10_RATE_50           0x41
 599 #define TSC10_RATE_80           0x42
 600 #define TSC10_RATE_100          0x43
 601 #define TSC10_RATE_130          0x44
 602 #define TSC10_RATE_150          0x45
 603
 604 /* commands */
 605 #define TSC10_CMD_RESET         0x55
 606 #define TSC10_CMD_RATE          0x05
 607 #define TSC10_CMD_DATA1         0x01
 608
 609 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
 610 {
 611         struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
 612         int ret = -ENOMEM;
 613         unsigned char *buf;
 614
 615         buf = kmalloc(2, GFP_NOIO);
 616         if (!buf)
 617                 goto err_nobuf;
 618         /* reset */
 619         buf[0] = buf[1] = 0xFF;
 620         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 621                               TSC10_CMD_RESET,
 622                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 623                               0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 624         if (ret < 0)
 625                 goto err_out;
 626         if (buf[0] != 0x06) {
 627                 ret = -ENODEV;
 628                 goto err_out;
 629         }
 630
 631         /* TSC-25 data sheet specifies a delay after the RESET command */
 632         msleep(150);
 633
 634         /* set coordinate output rate */
 635         buf[0] = buf[1] = 0xFF;
 636         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 637                               TSC10_CMD_RATE,
 638                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 639                               TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 640         if (ret < 0)
 641                 goto err_out;
 642         if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
 643                 ret = -ENODEV;
 644                 goto err_out;
 645         }
 646
 647         /* start sending data */
 648         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 649                               TSC10_CMD_DATA1,
 650                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 651                               0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 652 err_out:
 653         kfree(buf);
 654 err_nobuf:
 655         return ret;
 656 }
 657
 658
 659 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 660 {
 661         dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
 662         dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
 663         dev->touch = pkt[0] & 0x01;
 664
 665         return 1;
 666 }
 667 #endif
 668
 669
 670 /*****************************************************************************
 671  * IRTOUCH Part
 672  */
 673 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 674 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 675 {
 676         dev->x = (pkt[3] << 8) | pkt[2];
 677         dev->y = (pkt[5] << 8) | pkt[4];
 678         dev->touch = (pkt[1] & 0x03) ? 1 : 0;
 679
 680         return 1;
 681 }
 682 #endif
 683
 684 /*****************************************************************************
 685  * ET&T TC5UH/TC4UM part
 686  */
 687 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
 688 static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 689 {
 690         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
 691         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
 692         dev->touch = pkt[0] & 0x01;
 693
 694         return 1;
 695 }
 696 #endif
 697
 698 /*****************************************************************************
 699  * IdealTEK URTC1000 Part
 700  */
 701 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 702 #ifndef MULTI_PACKET
 703 #define MULTI_PACKET
 704 #endif
 705 static int idealtek_get_pkt_len(unsigned char *buf, int len)
 706 {
 707         if (buf[0] & 0x80)
 708                 return 5;
 709         if (buf[0] == 0x01)
 710                 return len;
 711         return 0;
 712 }
 713
 714 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 715 {
 716         switch (pkt[0] & 0x98) {
 717         case 0x88:
 718                 /* touch data in IdealTEK mode */
 719                 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
 720                 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
 721                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 722                 return 1;
 723
 724         case 0x98:
 725                 /* touch data in MT emulation mode */
 726                 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
 727                 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
 728                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 729                 return 1;
 730
 731         default:
 732                 return 0;
 733         }
 734 }
 735 #endif
 736
 737 /*****************************************************************************
 738  * General Touch Part
 739  */
 740 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 741 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 742 {
 743         dev->x = (pkt[2] << 8) | pkt[1];
 744         dev->y = (pkt[4] << 8) | pkt[3];
 745         dev->press = pkt[5] & 0xff;
 746         dev->touch = pkt[0] & 0x01;
 747
 748         return 1;
 749 }
 750 #endif
 751
 752 /*****************************************************************************
 753  * GoTop Part
 754  */
 755 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
 756 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 757 {
 758         dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
 759         dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
 760         dev->touch = pkt[0] & 0x01;
 761
 762         return 1;
 763 }
 764 #endif
 765
 766 /*****************************************************************************
 767  * JASTEC Part
 768  */
 769 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
 770 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 771 {
 772         dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
 773         dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
 774         dev->touch = (pkt[0] & 0x40) >> 6;
 775
 776         return 1;
 777 }
 778 #endif
 779
 780 /*****************************************************************************
 781  * Zytronic Part
 782  */
 783 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
 784 static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 785 {
 786         struct usb_interface *intf = dev->interface;
 787
 788         switch (pkt[0]) {
 789         case 0x3A: /* command response */
 790                 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
 791                 break;
 792
 793         case 0xC0: /* down */
 794                 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
 795                 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
 796                 dev->touch = 1;
 797                 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
 798                 return 1;
 799
 800         case 0x80: /* up */
 801                 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
 802                 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
 803                 dev->touch = 0;
 804                 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
 805                 return 1;
 806
 807         default:
 808                 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
 809                 break;
 810         }
 811
 812         return 0;
 813 }
 814 #endif
 815
 816 /*****************************************************************************
 817  * NEXIO Part
 818  */
 819 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
 820
 821 #define NEXIO_TIMEOUT   5000
 822 #define NEXIO_BUFSIZE   1024
 823 #define NEXIO_THRESHOLD 50
 824
 825 struct nexio_priv {
 826         struct urb *ack;
 827         unsigned char *ack_buf;
 828 };
 829
 830 struct nexio_touch_packet {
 831         u8      flags;          /* 0xe1 = touch, 0xe1 = release */
 832         __be16  data_len;       /* total bytes of touch data */
 833         __be16  x_len;          /* bytes for X axis */
 834         __be16  y_len;          /* bytes for Y axis */
 835         u8      data[];
 836 } __attribute__ ((packed));
 837
 838 static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
 839 static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
 840
 841 static void nexio_ack_complete(struct urb *urb)
 842 {
 843 }
 844
 845 static int nexio_alloc(struct usbtouch_usb *usbtouch)
 846 {
 847         struct nexio_priv *priv;
 848         int ret = -ENOMEM;
 849
 850         usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
 851         if (!usbtouch->priv)
 852                 goto out_buf;
 853
 854         priv = usbtouch->priv;
 855
 856         priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
 857                                 GFP_KERNEL);
 858         if (!priv->ack_buf)
 859                 goto err_priv;
 860
 861         priv->ack = usb_alloc_urb(0, GFP_KERNEL);
 862         if (!priv->ack) {
 863                 dev_dbg(&usbtouch->interface->dev,
 864                         "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
 865                 goto err_ack_buf;
 866         }
 867
 868         return 0;
 869
 870 err_ack_buf:
 871         kfree(priv->ack_buf);
 872 err_priv:
 873         kfree(priv);
 874 out_buf:
 875         return ret;
 876 }
 877
 878 static int nexio_init(struct usbtouch_usb *usbtouch)
 879 {
 880         struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
 881         struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
 882         struct nexio_priv *priv = usbtouch->priv;
 883         int ret = -ENOMEM;
 884         int actual_len, i;
 885         unsigned char *buf;
 886         char *firmware_ver = NULL, *device_name = NULL;
 887         int input_ep = 0, output_ep = 0;
 888
 889         /* find first input and output endpoint */
 890         for (i = 0; i < interface->desc.bNumEndpoints; i++) {
 891                 if (!input_ep &&
 892                     usb_endpoint_dir_in(&interface->endpoint[i].desc))
 893                         input_ep = interface->endpoint[i].desc.bEndpointAddress;
 894                 if (!output_ep &&
 895                     usb_endpoint_dir_out(&interface->endpoint[i].desc))
 896                         output_ep = interface->endpoint[i].desc.bEndpointAddress;
 897         }
 898         if (!input_ep || !output_ep)
 899                 return -ENXIO;
 900
 901         buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
 902         if (!buf)
 903                 goto out_buf;
 904
 905         /* two empty reads */
 906         for (i = 0; i < 2; i++) {
 907                 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
 908                                    buf, NEXIO_BUFSIZE, &actual_len,
 909                                    NEXIO_TIMEOUT);
 910                 if (ret < 0)
 911                         goto out_buf;
 912         }
 913
 914         /* send init command */
 915         memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
 916         ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
 917                            buf, sizeof(nexio_init_pkt), &actual_len,
 918                            NEXIO_TIMEOUT);
 919         if (ret < 0)
 920                 goto out_buf;
 921
 922         /* read replies */
 923         for (i = 0; i < 3; i++) {
 924                 memset(buf, 0, NEXIO_BUFSIZE);
 925                 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
 926                                    buf, NEXIO_BUFSIZE, &actual_len,
 927                                    NEXIO_TIMEOUT);
 928                 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
 929                         continue;
 930                 switch (buf[0]) {
 931                 case 0x83:      /* firmware version */
 932                         if (!firmware_ver)
 933                                 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
 934                         break;
 935                 case 0x84:      /* device name */
 936                         if (!device_name)
 937                                 device_name = kstrdup(&buf[2], GFP_NOIO);
 938                         break;
 939                 }
 940         }
 941
 942         printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
 943                device_name, firmware_ver);
 944
 945         kfree(firmware_ver);
 946         kfree(device_name);
 947
 948         usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
 949                           priv->ack_buf, sizeof(nexio_ack_pkt),
 950                           nexio_ack_complete, usbtouch);
 951         ret = 0;
 952
 953 out_buf:
 954         kfree(buf);
 955         return ret;
 956 }
 957
 958 static void nexio_exit(struct usbtouch_usb *usbtouch)
 959 {
 960         struct nexio_priv *priv = usbtouch->priv;
 961
 962         usb_kill_urb(priv->ack);
 963         usb_free_urb(priv->ack);
 964         kfree(priv->ack_buf);
 965         kfree(priv);
 966 }
 967
 968 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
 969 {
 970         struct nexio_touch_packet *packet = (void *) pkt;
 971         struct nexio_priv *priv = usbtouch->priv;
 972         unsigned int data_len = be16_to_cpu(packet->data_len);
 973         unsigned int x_len = be16_to_cpu(packet->x_len);
 974         unsigned int y_len = be16_to_cpu(packet->y_len);
 975         int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
 976
 977         /* got touch data? */
 978         if ((pkt[0] & 0xe0) != 0xe0)
 979                 return 0;
 980
 981         if (data_len > 0xff)
 982                 data_len -= 0x100;
 983         if (x_len > 0xff)
 984                 x_len -= 0x80;
 985
 986         /* send ACK */
 987         ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
 988
 989         if (!usbtouch->type->max_xc) {
 990                 usbtouch->type->max_xc = 2 * x_len;
 991                 input_set_abs_params(usbtouch->input, ABS_X,
 992                                      0, usbtouch->type->max_xc, 0, 0);
 993                 usbtouch->type->max_yc = 2 * y_len;
 994                 input_set_abs_params(usbtouch->input, ABS_Y,
 995                                      0, usbtouch->type->max_yc, 0, 0);
 996         }
 997         /*
 998          * The device reports state of IR sensors on X and Y axes.
 999          * Each byte represents "darkness" percentage (0-100) of one element.
1000          * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
1001          * This also means that there's a limited multi-touch capability but
1002          * it's disabled (and untested) here as there's no X driver for that.
1003          */
1004         begin_x = end_x = begin_y = end_y = -1;
1005         for (x = 0; x < x_len; x++) {
1006                 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1007                         begin_x = x;
1008                         continue;
1009                 }
1010                 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1011                         end_x = x - 1;
1012                         for (y = x_len; y < data_len; y++) {
1013                                 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
1014                                         begin_y = y - x_len;
1015                                         continue;
1016                                 }
1017                                 if (end_y == -1 &&
1018                                     begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
1019                                         end_y = y - 1 - x_len;
1020                                         w = end_x - begin_x;
1021                                         h = end_y - begin_y;
1022 #if 0
1023                                         /* multi-touch */
1024                                         input_report_abs(usbtouch->input,
1025                                                     ABS_MT_TOUCH_MAJOR, max(w,h));
1026                                         input_report_abs(usbtouch->input,
1027                                                     ABS_MT_TOUCH_MINOR, min(x,h));
1028                                         input_report_abs(usbtouch->input,
1029                                                     ABS_MT_POSITION_X, 2*begin_x+w);
1030                                         input_report_abs(usbtouch->input,
1031                                                     ABS_MT_POSITION_Y, 2*begin_y+h);
1032                                         input_report_abs(usbtouch->input,
1033                                                     ABS_MT_ORIENTATION, w > h);
1034                                         input_mt_sync(usbtouch->input);
1035 #endif
1036                                         /* single touch */
1037                                         usbtouch->x = 2 * begin_x + w;
1038                                         usbtouch->y = 2 * begin_y + h;
1039                                         usbtouch->touch = packet->flags & 0x01;
1040                                         begin_y = end_y = -1;
1041                                         return 1;
1042                                 }
1043                         }
1044                         begin_x = end_x = -1;
1045                 }
1046
1047         }
1048         return 0;
1049 }
1050 #endif
1051
1052
1053 /*****************************************************************************
1054  * ELO part
1055  */
1056
1057 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1058
1059 static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1060 {
1061         dev->x = (pkt[3] << 8) | pkt[2];
1062         dev->y = (pkt[5] << 8) | pkt[4];
1063         dev->touch = pkt[6] > 0;
1064         dev->press = pkt[6];
1065
1066         return 1;
1067 }
1068 #endif
1069
1070
1071 /*****************************************************************************
1072  * the different device descriptors
1073  */
1074 #ifdef MULTI_PACKET
1075 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1076                                    unsigned char *pkt, int len);
1077 #endif
1078
1079 static struct usbtouch_device_info usbtouch_dev_info[] = {
1080 #ifdef CONFIG_TOUCHSCREEN_USB_ELO
1081         [DEVTYPE_ELO] = {
1082                 .min_xc         = 0x0,
1083                 .max_xc         = 0x0fff,
1084                 .min_yc         = 0x0,
1085                 .max_yc         = 0x0fff,
1086                 .max_press      = 0xff,
1087                 .rept_size      = 8,
1088                 .read_data      = elo_read_data,
1089         },
1090 #endif
1091
1092 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
1093         [DEVTYPE_EGALAX] = {
1094                 .min_xc         = 0x0,
1095                 .max_xc         = 0x07ff,
1096                 .min_yc         = 0x0,
1097                 .max_yc         = 0x07ff,
1098                 .rept_size      = 16,
1099                 .process_pkt    = usbtouch_process_multi,
1100                 .get_pkt_len    = egalax_get_pkt_len,
1101                 .read_data      = egalax_read_data,
1102                 .init           = egalax_init,
1103         },
1104 #endif
1105
1106 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
1107         [DEVTYPE_PANJIT] = {
1108                 .min_xc         = 0x0,
1109                 .max_xc         = 0x0fff,
1110                 .min_yc         = 0x0,
1111                 .max_yc         = 0x0fff,
1112                 .rept_size      = 8,
1113                 .read_data      = panjit_read_data,
1114         },
1115 #endif
1116
1117 #ifdef CONFIG_TOUCHSCREEN_USB_3M
1118         [DEVTYPE_3M] = {
1119                 .min_xc         = 0x0,
1120                 .max_xc         = 0x4000,
1121                 .min_yc         = 0x0,
1122                 .max_yc         = 0x4000,
1123                 .rept_size      = 11,
1124                 .read_data      = mtouch_read_data,
1125                 .init           = mtouch_init,
1126         },
1127 #endif
1128
1129 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
1130         [DEVTYPE_ITM] = {
1131                 .min_xc         = 0x0,
1132                 .max_xc         = 0x0fff,
1133                 .min_yc         = 0x0,
1134                 .max_yc         = 0x0fff,
1135                 .max_press      = 0xff,
1136                 .rept_size      = 8,
1137                 .read_data      = itm_read_data,
1138         },
1139 #endif
1140
1141 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
1142         [DEVTYPE_ETURBO] = {
1143                 .min_xc         = 0x0,
1144                 .max_xc         = 0x07ff,
1145                 .min_yc         = 0x0,
1146                 .max_yc         = 0x07ff,
1147                 .rept_size      = 8,
1148                 .process_pkt    = usbtouch_process_multi,
1149                 .get_pkt_len    = eturbo_get_pkt_len,
1150                 .read_data      = eturbo_read_data,
1151         },
1152 #endif
1153
1154 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
1155         [DEVTYPE_GUNZE] = {
1156                 .min_xc         = 0x0,
1157                 .max_xc         = 0x0fff,
1158                 .min_yc         = 0x0,
1159                 .max_yc         = 0x0fff,
1160                 .rept_size      = 4,
1161                 .read_data      = gunze_read_data,
1162         },
1163 #endif
1164
1165 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
1166         [DEVTYPE_DMC_TSC10] = {
1167                 .min_xc         = 0x0,
1168                 .max_xc         = 0x03ff,
1169                 .min_yc         = 0x0,
1170                 .max_yc         = 0x03ff,
1171                 .rept_size      = 5,
1172                 .init           = dmc_tsc10_init,
1173                 .read_data      = dmc_tsc10_read_data,
1174         },
1175 #endif
1176
1177 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1178         [DEVTYPE_IRTOUCH] = {
1179                 .min_xc         = 0x0,
1180                 .max_xc         = 0x0fff,
1181                 .min_yc         = 0x0,
1182                 .max_yc         = 0x0fff,
1183                 .rept_size      = 8,
1184                 .read_data      = irtouch_read_data,
1185         },
1186
1187         [DEVTYPE_IRTOUCH_HIRES] = {
1188                 .min_xc         = 0x0,
1189                 .max_xc         = 0x7fff,
1190                 .min_yc         = 0x0,
1191                 .max_yc         = 0x7fff,
1192                 .rept_size      = 8,
1193                 .read_data      = irtouch_read_data,
1194         },
1195 #endif
1196
1197 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1198         [DEVTYPE_IDEALTEK] = {
1199                 .min_xc         = 0x0,
1200                 .max_xc         = 0x0fff,
1201                 .min_yc         = 0x0,
1202                 .max_yc         = 0x0fff,
1203                 .rept_size      = 8,
1204                 .process_pkt    = usbtouch_process_multi,
1205                 .get_pkt_len    = idealtek_get_pkt_len,
1206                 .read_data      = idealtek_read_data,
1207         },
1208 #endif
1209
1210 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1211         [DEVTYPE_GENERAL_TOUCH] = {
1212                 .min_xc         = 0x0,
1213                 .max_xc         = 0x7fff,
1214                 .min_yc         = 0x0,
1215                 .max_yc         = 0x7fff,
1216                 .rept_size      = 7,
1217                 .read_data      = general_touch_read_data,
1218         },
1219 #endif
1220
1221 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1222         [DEVTYPE_GOTOP] = {
1223                 .min_xc         = 0x0,
1224                 .max_xc         = 0x03ff,
1225                 .min_yc         = 0x0,
1226                 .max_yc         = 0x03ff,
1227                 .rept_size      = 4,
1228                 .read_data      = gotop_read_data,
1229         },
1230 #endif
1231
1232 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1233         [DEVTYPE_JASTEC] = {
1234                 .min_xc         = 0x0,
1235                 .max_xc         = 0x0fff,
1236                 .min_yc         = 0x0,
1237                 .max_yc         = 0x0fff,
1238                 .rept_size      = 4,
1239                 .read_data      = jastec_read_data,
1240         },
1241 #endif
1242
1243 #ifdef CONFIG_TOUCHSCREEN_USB_E2I
1244         [DEVTYPE_E2I] = {
1245                 .min_xc         = 0x0,
1246                 .max_xc         = 0x7fff,
1247                 .min_yc         = 0x0,
1248                 .max_yc         = 0x7fff,
1249                 .rept_size      = 6,
1250                 .init           = e2i_init,
1251                 .read_data      = e2i_read_data,
1252         },
1253 #endif
1254
1255 #ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1256         [DEVTYPE_ZYTRONIC] = {
1257                 .min_xc         = 0x0,
1258                 .max_xc         = 0x03ff,
1259                 .min_yc         = 0x0,
1260                 .max_yc         = 0x03ff,
1261                 .rept_size      = 5,
1262                 .read_data      = zytronic_read_data,
1263                 .irq_always     = true,
1264         },
1265 #endif
1266
1267 #ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1268         [DEVTYPE_TC45USB] = {
1269                 .min_xc         = 0x0,
1270                 .max_xc         = 0x0fff,
1271                 .min_yc         = 0x0,
1272                 .max_yc         = 0x0fff,
1273                 .rept_size      = 5,
1274                 .read_data      = tc45usb_read_data,
1275         },
1276 #endif
1277
1278 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1279         [DEVTYPE_NEXIO] = {
1280                 .rept_size      = 1024,
1281                 .irq_always     = true,
1282                 .read_data      = nexio_read_data,
1283                 .alloc          = nexio_alloc,
1284                 .init           = nexio_init,
1285                 .exit           = nexio_exit,
1286         },
1287 #endif
1288 #ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1289         [DEVTYPE_ETOUCH] = {
1290                 .min_xc         = 0x0,
1291                 .max_xc         = 0x07ff,
1292                 .min_yc         = 0x0,
1293                 .max_yc         = 0x07ff,
1294                 .rept_size      = 16,
1295                 .process_pkt    = usbtouch_process_multi,
1296                 .get_pkt_len    = etouch_get_pkt_len,
1297                 .read_data      = etouch_read_data,
1298         },
1299 #endif
1300 };
1301
1302
1303 /*****************************************************************************
1304  * Generic Part
1305  */
1306 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
1307                                  unsigned char *pkt, int len)
1308 {
1309         struct usbtouch_device_info *type = usbtouch->type;
1310
1311         if (!type->read_data(usbtouch, pkt))
1312                         return;
1313
1314         input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
1315
1316         if (swap_xy) {
1317                 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1318                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
1319         } else {
1320                 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1321                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
1322         }
1323         if (type->max_press)
1324                 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
1325         input_sync(usbtouch->input);
1326 }
1327
1328
1329 #ifdef MULTI_PACKET
1330 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1331                                    unsigned char *pkt, int len)
1332 {
1333         unsigned char *buffer;
1334         int pkt_len, pos, buf_len, tmp;
1335
1336         /* process buffer */
1337         if (unlikely(usbtouch->buf_len)) {
1338                 /* try to get size */
1339                 pkt_len = usbtouch->type->get_pkt_len(
1340                                 usbtouch->buffer, usbtouch->buf_len);
1341
1342                 /* drop? */
1343                 if (unlikely(!pkt_len))
1344                         goto out_flush_buf;
1345
1346                 /* need to append -pkt_len bytes before able to get size */
1347                 if (unlikely(pkt_len < 0)) {
1348                         int append = -pkt_len;
1349                         if (unlikely(append > len))
1350                                append = len;
1351                         if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1352                                 goto out_flush_buf;
1353                         memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1354                         usbtouch->buf_len += append;
1355
1356                         pkt_len = usbtouch->type->get_pkt_len(
1357                                         usbtouch->buffer, usbtouch->buf_len);
1358                         if (pkt_len < 0)
1359                                 return;
1360                 }
1361
1362                 /* append */
1363                 tmp = pkt_len - usbtouch->buf_len;
1364                 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1365                         goto out_flush_buf;
1366                 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
1367                 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
1368
1369                 buffer = pkt + tmp;
1370                 buf_len = len - tmp;
1371         } else {
1372                 buffer = pkt;
1373                 buf_len = len;
1374         }
1375
1376         /* loop over the received packet, process */
1377         pos = 0;
1378         while (pos < buf_len) {
1379                 /* get packet len */
1380                 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1381                                                         buf_len - pos);
1382
1383                 /* unknown packet: skip one byte */
1384                 if (unlikely(!pkt_len)) {
1385                         pos++;
1386                         continue;
1387                 }
1388
1389                 /* full packet: process */
1390                 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
1391                         usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
1392                 } else {
1393                         /* incomplete packet: save in buffer */
1394                         memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1395                         usbtouch->buf_len = buf_len - pos;
1396                         return;
1397                 }
1398                 pos += pkt_len;
1399         }
1400
1401 out_flush_buf:
1402         usbtouch->buf_len = 0;
1403         return;
1404 }
1405 #endif
1406
1407
1408 static void usbtouch_irq(struct urb *urb)
1409 {
1410         struct usbtouch_usb *usbtouch = urb->context;
1411         struct device *dev = &usbtouch->interface->dev;
1412         int retval;
1413
1414         switch (urb->status) {
1415         case 0:
1416                 /* success */
1417                 break;
1418         case -ETIME:
1419                 /* this urb is timing out */
1420                 dev_dbg(dev,
1421                         "%s - urb timed out - was the device unplugged?\n",
1422                         __func__);
1423                 return;
1424         case -ECONNRESET:
1425         case -ENOENT:
1426         case -ESHUTDOWN:
1427         case -EPIPE:
1428                 /* this urb is terminated, clean up */
1429                 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1430                         __func__, urb->status);
1431                 return;
1432         default:
1433                 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1434                         __func__, urb->status);
1435                 goto exit;
1436         }
1437
1438         usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
1439
1440 exit:
1441         usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
1442         retval = usb_submit_urb(urb, GFP_ATOMIC);
1443         if (retval)
1444                 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
1445                         __func__, retval);
1446 }
1447
1448 static int usbtouch_open(struct input_dev *input)
1449 {
1450         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1451         int r;
1452
1453         usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
1454
1455         r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1456         if (r < 0)
1457                 goto out;
1458
1459         if (!usbtouch->type->irq_always) {
1460                 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1461                         r = -EIO;
1462                         goto out_put;
1463                 }
1464         }
1465
1466         usbtouch->interface->needs_remote_wakeup = 1;
1467 out_put:
1468         usb_autopm_put_interface(usbtouch->interface);
1469 out:
1470         return r;
1471 }
1472
1473 static void usbtouch_close(struct input_dev *input)
1474 {
1475         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
1476         int r;
1477
1478         if (!usbtouch->type->irq_always)
1479                 usb_kill_urb(usbtouch->irq);
1480         r = usb_autopm_get_interface(usbtouch->interface);
1481         usbtouch->interface->needs_remote_wakeup = 0;
1482         if (!r)
1483                 usb_autopm_put_interface(usbtouch->interface);
1484 }
1485
1486 static int usbtouch_suspend
1487 (struct usb_interface *intf, pm_message_t message)
1488 {
1489         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1490
1491         usb_kill_urb(usbtouch->irq);
1492
1493         return 0;
1494 }
1495
1496 static int usbtouch_resume(struct usb_interface *intf)
1497 {
1498         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1499         struct input_dev *input = usbtouch->input;
1500         int result = 0;
1501
1502         mutex_lock(&input->mutex);
1503         if (input->users || usbtouch->type->irq_always)
1504                 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1505         mutex_unlock(&input->mutex);
1506
1507         return result;
1508 }
1509
1510 static int usbtouch_reset_resume(struct usb_interface *intf)
1511 {
1512         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1513         struct input_dev *input = usbtouch->input;
1514         int err = 0;
1515
1516         /* reinit the device */
1517         if (usbtouch->type->init) {
1518                 err = usbtouch->type->init(usbtouch);
1519                 if (err) {
1520                         dev_dbg(&intf->dev,
1521                                 "%s - type->init() failed, err: %d\n",
1522                                 __func__, err);
1523                         return err;
1524                 }
1525         }
1526
1527         /* restart IO if needed */
1528         mutex_lock(&input->mutex);
1529         if (input->users)
1530                 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1531         mutex_unlock(&input->mutex);
1532
1533         return err;
1534 }
1535
1536 static void usbtouch_free_buffers(struct usb_device *udev,
1537                                   struct usbtouch_usb *usbtouch)
1538 {
1539         usb_free_coherent(udev, usbtouch->data_size,
1540                           usbtouch->data, usbtouch->data_dma);
1541         kfree(usbtouch->buffer);
1542 }
1543
1544 static struct usb_endpoint_descriptor *
1545 usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1546 {
1547         int i;
1548
1549         for (i = 0; i < interface->desc.bNumEndpoints; i++)
1550                 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1551                         return &interface->endpoint[i].desc;
1552
1553         return NULL;
1554 }
1555
1556 static int usbtouch_probe(struct usb_interface *intf,
1557                           const struct usb_device_id *id)
1558 {
1559         struct usbtouch_usb *usbtouch;
1560         struct input_dev *input_dev;
1561         struct usb_endpoint_descriptor *endpoint;
1562         struct usb_device *udev = interface_to_usbdev(intf);
1563         struct usbtouch_device_info *type;
1564         int err = -ENOMEM;
1565
1566         /* some devices are ignored */
1567         if (id->driver_info == DEVTYPE_IGNORE)
1568                 return -ENODEV;
1569
1570         endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1571         if (!endpoint)
1572                 return -ENXIO;
1573
1574         usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1575         input_dev = input_allocate_device();
1576         if (!usbtouch || !input_dev)
1577                 goto out_free;
1578
1579         type = &usbtouch_dev_info[id->driver_info];
1580         usbtouch->type = type;
1581         if (!type->process_pkt)
1582                 type->process_pkt = usbtouch_process_pkt;
1583
1584         usbtouch->data_size = type->rept_size;
1585         if (type->get_pkt_len) {
1586                 /*
1587                  * When dealing with variable-length packets we should
1588                  * not request more than wMaxPacketSize bytes at once
1589                  * as we do not know if there is more data coming or
1590                  * we filled exactly wMaxPacketSize bytes and there is
1591                  * nothing else.
1592                  */
1593                 usbtouch->data_size = min(usbtouch->data_size,
1594                                           usb_endpoint_maxp(endpoint));
1595         }
1596
1597         usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
1598                                             GFP_KERNEL, &usbtouch->data_dma);
1599         if (!usbtouch->data)
1600                 goto out_free;
1601
1602         if (type->get_pkt_len) {
1603                 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1604                 if (!usbtouch->buffer)
1605                         goto out_free_buffers;
1606         }
1607
1608         usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1609         if (!usbtouch->irq) {
1610                 dev_dbg(&intf->dev,
1611                         "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
1612                 goto out_free_buffers;
1613         }
1614
1615         usbtouch->interface = intf;
1616         usbtouch->input = input_dev;
1617
1618         if (udev->manufacturer)
1619                 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1620
1621         if (udev->product) {
1622                 if (udev->manufacturer)
1623                         strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1624                 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1625         }
1626
1627         if (!strlen(usbtouch->name))
1628                 snprintf(usbtouch->name, sizeof(usbtouch->name),
1629                         "USB Touchscreen %04x:%04x",
1630                          le16_to_cpu(udev->descriptor.idVendor),
1631                          le16_to_cpu(udev->descriptor.idProduct));
1632
1633         usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
1634         strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
1635
1636         input_dev->name = usbtouch->name;
1637         input_dev->phys = usbtouch->phys;
1638         usb_to_input_id(udev, &input_dev->id);
1639         input_dev->dev.parent = &intf->dev;
1640
1641         input_set_drvdata(input_dev, usbtouch);
1642
1643         input_dev->open = usbtouch_open;
1644         input_dev->close = usbtouch_close;
1645
1646         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1647         input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
1648         input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1649         input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1650         if (type->max_press)
1651                 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1652                                      type->max_press, 0, 0);
1653
1654         if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1655                 usb_fill_int_urb(usbtouch->irq, udev,
1656                          usb_rcvintpipe(udev, endpoint->bEndpointAddress),
1657                          usbtouch->data, usbtouch->data_size,
1658                          usbtouch_irq, usbtouch, endpoint->bInterval);
1659         else
1660                 usb_fill_bulk_urb(usbtouch->irq, udev,
1661                          usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
1662                          usbtouch->data, usbtouch->data_size,
1663                          usbtouch_irq, usbtouch);
1664
1665         usbtouch->irq->dev = udev;
1666         usbtouch->irq->transfer_dma = usbtouch->data_dma;
1667         usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1668
1669         /* device specific allocations */
1670         if (type->alloc) {
1671                 err = type->alloc(usbtouch);
1672                 if (err) {
1673                         dev_dbg(&intf->dev,
1674                                 "%s - type->alloc() failed, err: %d\n",
1675                                 __func__, err);
1676                         goto out_free_urb;
1677                 }
1678         }
1679
1680         /* device specific initialisation*/
1681         if (type->init) {
1682                 err = type->init(usbtouch);
1683                 if (err) {
1684                         dev_dbg(&intf->dev,
1685                                 "%s - type->init() failed, err: %d\n",
1686                                 __func__, err);
1687                         goto out_do_exit;
1688                 }
1689         }
1690
1691         err = input_register_device(usbtouch->input);
1692         if (err) {
1693                 dev_dbg(&intf->dev,
1694                         "%s - input_register_device failed, err: %d\n",
1695                         __func__, err);
1696                 goto out_do_exit;
1697         }
1698
1699         usb_set_intfdata(intf, usbtouch);
1700
1701         if (usbtouch->type->irq_always) {
1702                 /* this can't fail */
1703                 usb_autopm_get_interface(intf);
1704                 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1705                 if (err) {
1706                         usb_autopm_put_interface(intf);
1707                         dev_err(&intf->dev,
1708                                 "%s - usb_submit_urb failed with result: %d\n",
1709                                 __func__, err);
1710                         goto out_unregister_input;
1711                 }
1712         }
1713
1714         return 0;
1715
1716 out_unregister_input:
1717         input_unregister_device(input_dev);
1718         input_dev = NULL;
1719 out_do_exit:
1720         if (type->exit)
1721                 type->exit(usbtouch);
1722 out_free_urb:
1723         usb_free_urb(usbtouch->irq);
1724 out_free_buffers:
1725         usbtouch_free_buffers(udev, usbtouch);
1726 out_free:
1727         input_free_device(input_dev);
1728         kfree(usbtouch);
1729         return err;
1730 }
1731
1732 static void usbtouch_disconnect(struct usb_interface *intf)
1733 {
1734         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1735
1736         if (!usbtouch)
1737                 return;
1738
1739         dev_dbg(&intf->dev,
1740                 "%s - usbtouch is initialized, cleaning up\n", __func__);
1741
1742         usb_set_intfdata(intf, NULL);
1743         /* this will stop IO via close */
1744         input_unregister_device(usbtouch->input);
1745         usb_free_urb(usbtouch->irq);
1746         if (usbtouch->type->exit)
1747                 usbtouch->type->exit(usbtouch);
1748         usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1749         kfree(usbtouch);
1750 }
1751
1752 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1753
1754 static struct usb_driver usbtouch_driver = {
1755         .name           = "usbtouchscreen",
1756         .probe          = usbtouch_probe,
1757         .disconnect     = usbtouch_disconnect,
1758         .suspend        = usbtouch_suspend,
1759         .resume         = usbtouch_resume,
1760         .reset_resume   = usbtouch_reset_resume,
1761         .id_table       = usbtouch_devices,
1762         .supports_autosuspend = 1,
1763 };
1764
1765 module_usb_driver(usbtouch_driver);
1766
1767 MODULE_AUTHOR(DRIVER_AUTHOR);
1768 MODULE_DESCRIPTION(DRIVER_DESC);
1769 MODULE_LICENSE("GPL");
1770
1771 MODULE_ALIAS("touchkitusb");
1772 MODULE_ALIAS("itmtouch");
1773 MODULE_ALIAS("mtouchusb");