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  *
  17  * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
  18  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
  19  *
  20  * This program is free software; you can redistribute it and/or
  21  * modify it under the terms of the GNU General Public License as
  22  * published by the Free Software Foundation; either version 2 of the
  23  * License, or (at your option) any later version.
  24  *
  25  * This program is distributed in the hope that it will be useful, but
  26  * WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  28  * General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU General Public License
  31  * along with this program; if not, write to the Free Software
  32  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  33  *
  34  * Driver is based on touchkitusb.c
  35  * - ITM parts are from itmtouch.c
  36  * - 3M parts are from mtouchusb.c
  37  * - PanJit parts are from an unmerged driver by Lanslott Gish
  38  * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
  39  *   driver from Marius Vollmer
  40  *
  41  *****************************************************************************/
  42
  43 //#define DEBUG
  44
  45 #include <linux/kernel.h>
  46 #include <linux/slab.h>
  47 #include <linux/input.h>
  48 #include <linux/module.h>
  49 #include <linux/init.h>
  50 #include <linux/usb.h>
  51 #include <linux/usb/input.h>
  52
  53
  54 #define DRIVER_VERSION          "v0.6"
  55 #define DRIVER_AUTHOR           "Daniel Ritz <daniel.ritz@gmx.ch>"
  56 #define DRIVER_DESC             "USB Touchscreen Driver"
  57
  58 static int swap_xy;
  59 module_param(swap_xy, bool, 0644);
  60 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
  61
  62 /* device specifc data/functions */
  63 struct usbtouch_usb;
  64 struct usbtouch_device_info {
  65         int min_xc, max_xc;
  66         int min_yc, max_yc;
  67         int min_press, max_press;
  68         int rept_size;
  69
  70         void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
  71
  72         /*
  73          * used to get the packet len. possible return values:
  74          * > 0: packet len
  75          * = 0: skip one byte
  76          * < 0: -return value more bytes needed
  77          */
  78         int  (*get_pkt_len) (unsigned char *pkt, int len);
  79
  80         int  (*read_data)   (struct usbtouch_usb *usbtouch, unsigned char *pkt);
  81         int  (*init)        (struct usbtouch_usb *usbtouch);
  82 };
  83
  84 /* a usbtouch device */
  85 struct usbtouch_usb {
  86         unsigned char *data;
  87         dma_addr_t data_dma;
  88         unsigned char *buffer;
  89         int buf_len;
  90         struct urb *irq;
  91         struct usb_device *udev;
  92         struct input_dev *input;
  93         struct usbtouch_device_info *type;
  94         char name[128];
  95         char phys[64];
  96
  97         int x, y;
  98         int touch, press;
  99 };
 100
 101
 102 /* device types */
 103 enum {
 104         DEVTPYE_DUMMY = -1,
 105         DEVTYPE_EGALAX,
 106         DEVTYPE_PANJIT,
 107         DEVTYPE_3M,
 108         DEVTYPE_ITM,
 109         DEVTYPE_ETURBO,
 110         DEVTYPE_GUNZE,
 111         DEVTYPE_DMC_TSC10,
 112         DEVTYPE_IRTOUCH,
 113         DEVTYPE_IDEALTEK,
 114         DEVTYPE_GENERAL_TOUCH,
 115         DEVTYPE_GOTOP,
 116 };
 117
 118 static struct usb_device_id usbtouch_devices[] = {
 119 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 120         {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
 121         {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
 122         {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
 123         {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
 124         {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
 125         {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
 126         {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
 127 #endif
 128
 129 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 130         {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
 131         {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
 132         {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
 133         {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
 134 #endif
 135
 136 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 137         {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
 138 #endif
 139
 140 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 141         {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
 142 #endif
 143
 144 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 145         {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
 146 #endif
 147
 148 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 149         {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
 150 #endif
 151
 152 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 153         {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
 154 #endif
 155
 156 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 157         {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 158         {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 159 #endif
 160
 161 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 162         {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
 163 #endif
 164
 165 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 166         {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
 167 #endif
 168
 169 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
 170         {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
 171         {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
 172         {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
 173 #endif
 174
 175         {}
 176 };
 177
 178
 179 /*****************************************************************************
 180  * eGalax part
 181  */
 182
 183 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 184
 185 #ifndef MULTI_PACKET
 186 #define MULTI_PACKET
 187 #endif
 188
 189 #define EGALAX_PKT_TYPE_MASK            0xFE
 190 #define EGALAX_PKT_TYPE_REPT            0x80
 191 #define EGALAX_PKT_TYPE_DIAG            0x0A
 192
 193 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 194 {
 195         if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
 196                 return 0;
 197
 198         dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
 199         dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
 200         dev->touch = pkt[0] & 0x01;
 201
 202         return 1;
 203 }
 204
 205 static int egalax_get_pkt_len(unsigned char *buf, int len)
 206 {
 207         switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
 208         case EGALAX_PKT_TYPE_REPT:
 209                 return 5;
 210
 211         case EGALAX_PKT_TYPE_DIAG:
 212                 if (len < 2)
 213                         return -1;
 214
 215                 return buf[1] + 2;
 216         }
 217
 218         return 0;
 219 }
 220 #endif
 221
 222
 223 /*****************************************************************************
 224  * PanJit Part
 225  */
 226 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 227 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 228 {
 229         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
 230         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
 231         dev->touch = pkt[0] & 0x01;
 232
 233         return 1;
 234 }
 235 #endif
 236
 237
 238 /*****************************************************************************
 239  * 3M/Microtouch Part
 240  */
 241 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 242
 243 #define MTOUCHUSB_ASYNC_REPORT          1
 244 #define MTOUCHUSB_RESET                 7
 245 #define MTOUCHUSB_REQ_CTRLLR_ID         10
 246
 247 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 248 {
 249         dev->x = (pkt[8] << 8) | pkt[7];
 250         dev->y = (pkt[10] << 8) | pkt[9];
 251         dev->touch = (pkt[2] & 0x40) ? 1 : 0;
 252
 253         return 1;
 254 }
 255
 256 static int mtouch_init(struct usbtouch_usb *usbtouch)
 257 {
 258         int ret, i;
 259
 260         ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
 261                               MTOUCHUSB_RESET,
 262                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 263                               1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 264         dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
 265             __FUNCTION__, ret);
 266         if (ret < 0)
 267                 return ret;
 268         msleep(150);
 269
 270         for (i = 0; i < 3; i++) {
 271                 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
 272                                       MTOUCHUSB_ASYNC_REPORT,
 273                                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 274                                       1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
 275                 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
 276                     __FUNCTION__, ret);
 277                 if (ret >= 0)
 278                         break;
 279                 if (ret != -EPIPE)
 280                         return ret;
 281         }
 282
 283         return 0;
 284 }
 285 #endif
 286
 287
 288 /*****************************************************************************
 289  * ITM Part
 290  */
 291 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 292 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 293 {
 294         int touch;
 295         /*
 296          * ITM devices report invalid x/y data if not touched.
 297          * if the screen was touched before but is not touched any more
 298          * report touch as 0 with the last valid x/y data once. then stop
 299          * reporting data until touched again.
 300          */
 301         dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
 302
 303         touch = ~pkt[7] & 0x20;
 304         if (!touch) {
 305                 if (dev->touch) {
 306                         dev->touch = 0;
 307                         return 1;
 308                 }
 309
 310                 return 0;
 311         }
 312
 313         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
 314         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
 315         dev->touch = touch;
 316
 317         return 1;
 318 }
 319 #endif
 320
 321
 322 /*****************************************************************************
 323  * eTurboTouch part
 324  */
 325 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 326 #ifndef MULTI_PACKET
 327 #define MULTI_PACKET
 328 #endif
 329 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 330 {
 331         unsigned int shift;
 332
 333         /* packets should start with sync */
 334         if (!(pkt[0] & 0x80))
 335                 return 0;
 336
 337         shift = (6 - (pkt[0] & 0x03));
 338         dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
 339         dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
 340         dev->touch = (pkt[0] & 0x10) ? 1 : 0;
 341
 342         return 1;
 343 }
 344
 345 static int eturbo_get_pkt_len(unsigned char *buf, int len)
 346 {
 347         if (buf[0] & 0x80)
 348                 return 5;
 349         if (buf[0] == 0x01)
 350                 return 3;
 351         return 0;
 352 }
 353 #endif
 354
 355
 356 /*****************************************************************************
 357  * Gunze part
 358  */
 359 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 360 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 361 {
 362         if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
 363                 return 0;
 364
 365         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
 366         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
 367         dev->touch = pkt[0] & 0x20;
 368
 369         return 1;
 370 }
 371 #endif
 372
 373 /*****************************************************************************
 374  * DMC TSC-10/25 Part
 375  *
 376  * Documentation about the controller and it's protocol can be found at
 377  *   http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
 378  *   http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
 379  */
 380 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 381
 382 /* supported data rates. currently using 130 */
 383 #define TSC10_RATE_POINT        0x50
 384 #define TSC10_RATE_30           0x40
 385 #define TSC10_RATE_50           0x41
 386 #define TSC10_RATE_80           0x42
 387 #define TSC10_RATE_100          0x43
 388 #define TSC10_RATE_130          0x44
 389 #define TSC10_RATE_150          0x45
 390
 391 /* commands */
 392 #define TSC10_CMD_RESET         0x55
 393 #define TSC10_CMD_RATE          0x05
 394 #define TSC10_CMD_DATA1         0x01
 395
 396 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
 397 {
 398         struct usb_device *dev = usbtouch->udev;
 399         int ret = -ENOMEM;
 400         unsigned char *buf;
 401
 402         buf = kmalloc(2, GFP_KERNEL);
 403         if (!buf)
 404                 goto err_nobuf;
 405         /* reset */
 406         buf[0] = buf[1] = 0xFF;
 407         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 408                               TSC10_CMD_RESET,
 409                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 410                               0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 411         if (ret < 0)
 412                 goto err_out;
 413         if (buf[0] != 0x06 || buf[1] != 0x00) {
 414                 ret = -ENODEV;
 415                 goto err_out;
 416         }
 417
 418         /* set coordinate output rate */
 419         buf[0] = buf[1] = 0xFF;
 420         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 421                               TSC10_CMD_RATE,
 422                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 423                               TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 424         if (ret < 0)
 425                 goto err_out;
 426         if ((buf[0] != 0x06 || buf[1] != 0x00) &&
 427             (buf[0] != 0x15 || buf[1] != 0x01)) {
 428                 ret = -ENODEV;
 429                 goto err_out;
 430         }
 431
 432         /* start sending data */
 433         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 434                               TSC10_CMD_DATA1,
 435                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 436                               0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 437 err_out:
 438         kfree(buf);
 439 err_nobuf:
 440         return ret;
 441 }
 442
 443
 444 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 445 {
 446         dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
 447         dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
 448         dev->touch = pkt[0] & 0x01;
 449
 450         return 1;
 451 }
 452 #endif
 453
 454
 455 /*****************************************************************************
 456  * IRTOUCH Part
 457  */
 458 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 459 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 460 {
 461         dev->x = (pkt[3] << 8) | pkt[2];
 462         dev->y = (pkt[5] << 8) | pkt[4];
 463         dev->touch = (pkt[1] & 0x03) ? 1 : 0;
 464
 465         return 1;
 466 }
 467 #endif
 468
 469
 470 /*****************************************************************************
 471  * IdealTEK URTC1000 Part
 472  */
 473 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 474 #ifndef MULTI_PACKET
 475 #define MULTI_PACKET
 476 #endif
 477 static int idealtek_get_pkt_len(unsigned char *buf, int len)
 478 {
 479         if (buf[0] & 0x80)
 480                 return 5;
 481         if (buf[0] == 0x01)
 482                 return len;
 483         return 0;
 484 }
 485
 486 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 487 {
 488         switch (pkt[0] & 0x98) {
 489         case 0x88:
 490                 /* touch data in IdealTEK mode */
 491                 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
 492                 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
 493                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 494                 return 1;
 495
 496         case 0x98:
 497                 /* touch data in MT emulation mode */
 498                 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
 499                 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
 500                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 501                 return 1;
 502
 503         default:
 504                 return 0;
 505         }
 506 }
 507 #endif
 508
 509 /*****************************************************************************
 510  * General Touch Part
 511  */
 512 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 513 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 514 {
 515         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
 516         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
 517         dev->press = pkt[5] & 0xff;
 518         dev->touch = pkt[0] & 0x01;
 519
 520         return 1;
 521 }
 522 #endif
 523
 524 /*****************************************************************************
 525  * GoTop Part
 526  */
 527 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
 528 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 529 {
 530         dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
 531         dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
 532         dev->touch = pkt[0] & 0x01;
 533         return 1;
 534 }
 535 #endif
 536
 537
 538 /*****************************************************************************
 539  * the different device descriptors
 540  */
 541 #ifdef MULTI_PACKET
 542 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
 543                                    unsigned char *pkt, int len);
 544 #endif
 545
 546 static struct usbtouch_device_info usbtouch_dev_info[] = {
 547 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 548         [DEVTYPE_EGALAX] = {
 549                 .min_xc         = 0x0,
 550                 .max_xc         = 0x07ff,
 551                 .min_yc         = 0x0,
 552                 .max_yc         = 0x07ff,
 553                 .rept_size      = 16,
 554                 .process_pkt    = usbtouch_process_multi,
 555                 .get_pkt_len    = egalax_get_pkt_len,
 556                 .read_data      = egalax_read_data,
 557         },
 558 #endif
 559
 560 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 561         [DEVTYPE_PANJIT] = {
 562                 .min_xc         = 0x0,
 563                 .max_xc         = 0x0fff,
 564                 .min_yc         = 0x0,
 565                 .max_yc         = 0x0fff,
 566                 .rept_size      = 8,
 567                 .read_data      = panjit_read_data,
 568         },
 569 #endif
 570
 571 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 572         [DEVTYPE_3M] = {
 573                 .min_xc         = 0x0,
 574                 .max_xc         = 0x4000,
 575                 .min_yc         = 0x0,
 576                 .max_yc         = 0x4000,
 577                 .rept_size      = 11,
 578                 .read_data      = mtouch_read_data,
 579                 .init           = mtouch_init,
 580         },
 581 #endif
 582
 583 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 584         [DEVTYPE_ITM] = {
 585                 .min_xc         = 0x0,
 586                 .max_xc         = 0x0fff,
 587                 .min_yc         = 0x0,
 588                 .max_yc         = 0x0fff,
 589                 .max_press      = 0xff,
 590                 .rept_size      = 8,
 591                 .read_data      = itm_read_data,
 592         },
 593 #endif
 594
 595 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 596         [DEVTYPE_ETURBO] = {
 597                 .min_xc         = 0x0,
 598                 .max_xc         = 0x07ff,
 599                 .min_yc         = 0x0,
 600                 .max_yc         = 0x07ff,
 601                 .rept_size      = 8,
 602                 .process_pkt    = usbtouch_process_multi,
 603                 .get_pkt_len    = eturbo_get_pkt_len,
 604                 .read_data      = eturbo_read_data,
 605         },
 606 #endif
 607
 608 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 609         [DEVTYPE_GUNZE] = {
 610                 .min_xc         = 0x0,
 611                 .max_xc         = 0x0fff,
 612                 .min_yc         = 0x0,
 613                 .max_yc         = 0x0fff,
 614                 .rept_size      = 4,
 615                 .read_data      = gunze_read_data,
 616         },
 617 #endif
 618
 619 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 620         [DEVTYPE_DMC_TSC10] = {
 621                 .min_xc         = 0x0,
 622                 .max_xc         = 0x03ff,
 623                 .min_yc         = 0x0,
 624                 .max_yc         = 0x03ff,
 625                 .rept_size      = 5,
 626                 .init           = dmc_tsc10_init,
 627                 .read_data      = dmc_tsc10_read_data,
 628         },
 629 #endif
 630
 631 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 632         [DEVTYPE_IRTOUCH] = {
 633                 .min_xc         = 0x0,
 634                 .max_xc         = 0x0fff,
 635                 .min_yc         = 0x0,
 636                 .max_yc         = 0x0fff,
 637                 .rept_size      = 8,
 638                 .read_data      = irtouch_read_data,
 639         },
 640 #endif
 641
 642 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 643         [DEVTYPE_IDEALTEK] = {
 644                 .min_xc         = 0x0,
 645                 .max_xc         = 0x0fff,
 646                 .min_yc         = 0x0,
 647                 .max_yc         = 0x0fff,
 648                 .rept_size      = 8,
 649                 .process_pkt    = usbtouch_process_multi,
 650                 .get_pkt_len    = idealtek_get_pkt_len,
 651                 .read_data      = idealtek_read_data,
 652         },
 653 #endif
 654
 655 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 656         [DEVTYPE_GENERAL_TOUCH] = {
 657                 .min_xc         = 0x0,
 658                 .max_xc         = 0x0500,
 659                 .min_yc         = 0x0,
 660                 .max_yc         = 0x0500,
 661                 .rept_size      = 7,
 662                 .read_data      = general_touch_read_data,
 663         },
 664 #endif
 665
 666 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
 667         [DEVTYPE_GOTOP] = {
 668                 .min_xc         = 0x0,
 669                 .max_xc         = 0x03ff,
 670                 .min_yc         = 0x0,
 671                 .max_yc         = 0x03ff,
 672                 .rept_size      = 4,
 673                 .read_data      = gotop_read_data,
 674         },
 675 #endif
 676 };
 677
 678
 679 /*****************************************************************************
 680  * Generic Part
 681  */
 682 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
 683                                  unsigned char *pkt, int len)
 684 {
 685         struct usbtouch_device_info *type = usbtouch->type;
 686
 687         if (!type->read_data(usbtouch, pkt))
 688                         return;
 689
 690         input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
 691
 692         if (swap_xy) {
 693                 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
 694                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
 695         } else {
 696                 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
 697                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
 698         }
 699         if (type->max_press)
 700                 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
 701         input_sync(usbtouch->input);
 702 }
 703
 704
 705 #ifdef MULTI_PACKET
 706 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
 707                                    unsigned char *pkt, int len)
 708 {
 709         unsigned char *buffer;
 710         int pkt_len, pos, buf_len, tmp;
 711
 712         /* process buffer */
 713         if (unlikely(usbtouch->buf_len)) {
 714                 /* try to get size */
 715                 pkt_len = usbtouch->type->get_pkt_len(
 716                                 usbtouch->buffer, usbtouch->buf_len);
 717
 718                 /* drop? */
 719                 if (unlikely(!pkt_len))
 720                         goto out_flush_buf;
 721
 722                 /* need to append -pkt_len bytes before able to get size */
 723                 if (unlikely(pkt_len < 0)) {
 724                         int append = -pkt_len;
 725                         if (unlikely(append > len))
 726                                append = len;
 727                         if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
 728                                 goto out_flush_buf;
 729                         memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
 730                         usbtouch->buf_len += append;
 731
 732                         pkt_len = usbtouch->type->get_pkt_len(
 733                                         usbtouch->buffer, usbtouch->buf_len);
 734                         if (pkt_len < 0)
 735                                 return;
 736                 }
 737
 738                 /* append */
 739                 tmp = pkt_len - usbtouch->buf_len;
 740                 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
 741                         goto out_flush_buf;
 742                 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
 743                 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
 744
 745                 buffer = pkt + tmp;
 746                 buf_len = len - tmp;
 747         } else {
 748                 buffer = pkt;
 749                 buf_len = len;
 750         }
 751
 752         /* loop over the received packet, process */
 753         pos = 0;
 754         while (pos < buf_len) {
 755                 /* get packet len */
 756                 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
 757                                                         buf_len - pos);
 758
 759                 /* unknown packet: skip one byte */
 760                 if (unlikely(!pkt_len)) {
 761                         pos++;
 762                         continue;
 763                 }
 764
 765                 /* full packet: process */
 766                 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
 767                         usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
 768                 } else {
 769                         /* incomplete packet: save in buffer */
 770                         memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
 771                         usbtouch->buf_len = buf_len - pos;
 772                         return;
 773                 }
 774                 pos += pkt_len;
 775         }
 776
 777 out_flush_buf:
 778         usbtouch->buf_len = 0;
 779         return;
 780 }
 781 #endif
 782
 783
 784 static void usbtouch_irq(struct urb *urb)
 785 {
 786         struct usbtouch_usb *usbtouch = urb->context;
 787         int retval;
 788
 789         switch (urb->status) {
 790         case 0:
 791                 /* success */
 792                 break;
 793         case -ETIME:
 794                 /* this urb is timing out */
 795                 dbg("%s - urb timed out - was the device unplugged?",
 796                     __FUNCTION__);
 797                 return;
 798         case -ECONNRESET:
 799         case -ENOENT:
 800         case -ESHUTDOWN:
 801                 /* this urb is terminated, clean up */
 802                 dbg("%s - urb shutting down with status: %d",
 803                     __FUNCTION__, urb->status);
 804                 return;
 805         default:
 806                 dbg("%s - nonzero urb status received: %d",
 807                     __FUNCTION__, urb->status);
 808                 goto exit;
 809         }
 810
 811         usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
 812
 813 exit:
 814         retval = usb_submit_urb(urb, GFP_ATOMIC);
 815         if (retval)
 816                 err("%s - usb_submit_urb failed with result: %d",
 817                     __FUNCTION__, retval);
 818 }
 819
 820 static int usbtouch_open(struct input_dev *input)
 821 {
 822         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
 823
 824         usbtouch->irq->dev = usbtouch->udev;
 825
 826         if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
 827                 return -EIO;
 828
 829         return 0;
 830 }
 831
 832 static void usbtouch_close(struct input_dev *input)
 833 {
 834         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
 835
 836         usb_kill_urb(usbtouch->irq);
 837 }
 838
 839
 840 static void usbtouch_free_buffers(struct usb_device *udev,
 841                                   struct usbtouch_usb *usbtouch)
 842 {
 843         usb_buffer_free(udev, usbtouch->type->rept_size,
 844                         usbtouch->data, usbtouch->data_dma);
 845         kfree(usbtouch->buffer);
 846 }
 847
 848
 849 static int usbtouch_probe(struct usb_interface *intf,
 850                           const struct usb_device_id *id)
 851 {
 852         struct usbtouch_usb *usbtouch;
 853         struct input_dev *input_dev;
 854         struct usb_host_interface *interface;
 855         struct usb_endpoint_descriptor *endpoint;
 856         struct usb_device *udev = interface_to_usbdev(intf);
 857         struct usbtouch_device_info *type;
 858         int err = -ENOMEM;
 859
 860         interface = intf->cur_altsetting;
 861         endpoint = &interface->endpoint[0].desc;
 862
 863         usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
 864         input_dev = input_allocate_device();
 865         if (!usbtouch || !input_dev)
 866                 goto out_free;
 867
 868         type = &usbtouch_dev_info[id->driver_info];
 869         usbtouch->type = type;
 870         if (!type->process_pkt)
 871                 type->process_pkt = usbtouch_process_pkt;
 872
 873         usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
 874                                           GFP_KERNEL, &usbtouch->data_dma);
 875         if (!usbtouch->data)
 876                 goto out_free;
 877
 878         if (type->get_pkt_len) {
 879                 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
 880                 if (!usbtouch->buffer)
 881                         goto out_free_buffers;
 882         }
 883
 884         usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
 885         if (!usbtouch->irq) {
 886                 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__);
 887                 goto out_free_buffers;
 888         }
 889
 890         usbtouch->udev = udev;
 891         usbtouch->input = input_dev;
 892
 893         if (udev->manufacturer)
 894                 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
 895
 896         if (udev->product) {
 897                 if (udev->manufacturer)
 898                         strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
 899                 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
 900         }
 901
 902         if (!strlen(usbtouch->name))
 903                 snprintf(usbtouch->name, sizeof(usbtouch->name),
 904                         "USB Touchscreen %04x:%04x",
 905                          le16_to_cpu(udev->descriptor.idVendor),
 906                          le16_to_cpu(udev->descriptor.idProduct));
 907
 908         usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
 909         strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
 910
 911         input_dev->name = usbtouch->name;
 912         input_dev->phys = usbtouch->phys;
 913         usb_to_input_id(udev, &input_dev->id);
 914         input_dev->dev.parent = &intf->dev;
 915
 916         input_set_drvdata(input_dev, usbtouch);
 917
 918         input_dev->open = usbtouch_open;
 919         input_dev->close = usbtouch_close;
 920
 921         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 922         input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 923         input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
 924         input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
 925         if (type->max_press)
 926                 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
 927                                      type->max_press, 0, 0);
 928
 929         usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
 930                          usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress),
 931                          usbtouch->data, type->rept_size,
 932                          usbtouch_irq, usbtouch, endpoint->bInterval);
 933
 934         usbtouch->irq->dev = usbtouch->udev;
 935         usbtouch->irq->transfer_dma = usbtouch->data_dma;
 936         usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 937
 938         /* device specific init */
 939         if (type->init) {
 940                 err = type->init(usbtouch);
 941                 if (err) {
 942                         dbg("%s - type->init() failed, err: %d", __FUNCTION__, err);
 943                         goto out_free_buffers;
 944                 }
 945         }
 946
 947         err = input_register_device(usbtouch->input);
 948         if (err) {
 949                 dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err);
 950                 goto out_free_buffers;
 951         }
 952
 953         usb_set_intfdata(intf, usbtouch);
 954
 955         return 0;
 956
 957 out_free_buffers:
 958         usbtouch_free_buffers(udev, usbtouch);
 959 out_free:
 960         input_free_device(input_dev);
 961         kfree(usbtouch);
 962         return err;
 963 }
 964
 965 static void usbtouch_disconnect(struct usb_interface *intf)
 966 {
 967         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
 968
 969         dbg("%s - called", __FUNCTION__);
 970
 971         if (!usbtouch)
 972                 return;
 973
 974         dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__);
 975         usb_set_intfdata(intf, NULL);
 976         usb_kill_urb(usbtouch->irq);
 977         input_unregister_device(usbtouch->input);
 978         usb_free_urb(usbtouch->irq);
 979         usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
 980         kfree(usbtouch);
 981 }
 982
 983 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
 984
 985 static struct usb_driver usbtouch_driver = {
 986         .name           = "usbtouchscreen",
 987         .probe          = usbtouch_probe,
 988         .disconnect     = usbtouch_disconnect,
 989         .id_table       = usbtouch_devices,
 990 };
 991
 992 static int __init usbtouch_init(void)
 993 {
 994         return usb_register(&usbtouch_driver);
 995 }
 996
 997 static void __exit usbtouch_cleanup(void)
 998 {
 999         usb_deregister(&usbtouch_driver);
1000 }
1001
1002 module_init(usbtouch_init);
1003 module_exit(usbtouch_cleanup);
1004
1005 MODULE_AUTHOR(DRIVER_AUTHOR);
1006 MODULE_DESCRIPTION(DRIVER_DESC);
1007 MODULE_LICENSE("GPL");
1008
1009 MODULE_ALIAS("touchkitusb");
1010 MODULE_ALIAS("itmtouch");
1011 MODULE_ALIAS("mtouchusb");