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  *
  15  * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch>
  16  * Copyright (C) by Todd E. Johnson (mtouchusb.c)
  17  *
  18  * This program is free software; you can redistribute it and/or
  19  * modify it under the terms of the GNU General Public License as
  20  * published by the Free Software Foundation; either version 2 of the
  21  * License, or (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful, but
  24  * WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  26  * General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  31  *
  32  * Driver is based on touchkitusb.c
  33  * - ITM parts are from itmtouch.c
  34  * - 3M parts are from mtouchusb.c
  35  * - PanJit parts are from an unmerged driver by Lanslott Gish
  36  * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
  37  *   driver from Marius Vollmer
  38  *
  39  *****************************************************************************/
  40
  41 //#define DEBUG
  42
  43 #include <linux/kernel.h>
  44 #include <linux/slab.h>
  45 #include <linux/input.h>
  46 #include <linux/module.h>
  47 #include <linux/init.h>
  48 #include <linux/usb.h>
  49 #include <linux/usb/input.h>
  50
  51
  52 #define DRIVER_VERSION          "v0.5"
  53 #define DRIVER_AUTHOR           "Daniel Ritz <daniel.ritz@gmx.ch>"
  54 #define DRIVER_DESC             "USB Touchscreen Driver"
  55
  56 static int swap_xy;
  57 module_param(swap_xy, bool, 0644);
  58 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
  59
  60 /* device specifc data/functions */
  61 struct usbtouch_usb;
  62 struct usbtouch_device_info {
  63         int min_xc, max_xc;
  64         int min_yc, max_yc;
  65         int min_press, max_press;
  66         int rept_size;
  67         int flags;
  68
  69         void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
  70         int  (*get_pkt_len) (unsigned char *pkt, int len);
  71         int  (*read_data)   (struct usbtouch_usb *usbtouch, unsigned char *pkt);
  72         int  (*init)        (struct usbtouch_usb *usbtouch);
  73 };
  74
  75 #define USBTOUCH_FLG_BUFFER     0x01
  76
  77
  78 /* a usbtouch device */
  79 struct usbtouch_usb {
  80         unsigned char *data;
  81         dma_addr_t data_dma;
  82         unsigned char *buffer;
  83         int buf_len;
  84         struct urb *irq;
  85         struct usb_device *udev;
  86         struct input_dev *input;
  87         struct usbtouch_device_info *type;
  88         char name[128];
  89         char phys[64];
  90
  91         int x, y;
  92         int touch, press;
  93 };
  94
  95
  96 #if defined(CONFIG_TOUCHSCREEN_USB_EGALAX) || defined(CONFIG_TOUCHSCREEN_USB_ETURBO) || defined(CONFIG_TOUCHSCREEN_USB_IDEALTEK)
  97 #define MULTI_PACKET
  98 #endif
  99
 100 #ifdef MULTI_PACKET
 101 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
 102                                    unsigned char *pkt, int len);
 103 #endif
 104
 105 /* device types */
 106 enum {
 107         DEVTPYE_DUMMY = -1,
 108         DEVTYPE_EGALAX,
 109         DEVTYPE_PANJIT,
 110         DEVTYPE_3M,
 111         DEVTYPE_ITM,
 112         DEVTYPE_ETURBO,
 113         DEVTYPE_GUNZE,
 114         DEVTYPE_DMC_TSC10,
 115         DEVTYPE_IRTOUCH,
 116         DEVTYPE_IDEALTEK,
 117         DEVTYPE_GENERAL_TOUCH,
 118 };
 119
 120 static struct usb_device_id usbtouch_devices[] = {
 121 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 122         {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
 123         {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
 124         {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
 125         {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
 126         {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
 127         {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
 128         {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
 129 #endif
 130
 131 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 132         {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
 133         {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
 134         {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
 135         {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
 136 #endif
 137
 138 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 139         {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
 140 #endif
 141
 142 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 143         {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
 144 #endif
 145
 146 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 147         {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
 148 #endif
 149
 150 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 151         {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
 152 #endif
 153
 154 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 155         {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
 156 #endif
 157
 158 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 159         {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 160         {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
 161 #endif
 162
 163 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 164         {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
 165 #endif
 166
 167 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 168         {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
 169 #endif
 170
 171         {}
 172 };
 173
 174
 175 /*****************************************************************************
 176  * eGalax part
 177  */
 178
 179 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 180
 181 #define EGALAX_PKT_TYPE_MASK            0xFE
 182 #define EGALAX_PKT_TYPE_REPT            0x80
 183 #define EGALAX_PKT_TYPE_DIAG            0x0A
 184
 185 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 186 {
 187         if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
 188                 return 0;
 189
 190         dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
 191         dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
 192         dev->touch = pkt[0] & 0x01;
 193
 194         return 1;
 195 }
 196
 197 static int egalax_get_pkt_len(unsigned char *buf, int len)
 198 {
 199         switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
 200         case EGALAX_PKT_TYPE_REPT:
 201                 return 5;
 202
 203         case EGALAX_PKT_TYPE_DIAG:
 204                 if (len < 2)
 205                         return -1;
 206
 207                 return buf[1] + 2;
 208         }
 209
 210         return 0;
 211 }
 212 #endif
 213
 214
 215 /*****************************************************************************
 216  * PanJit Part
 217  */
 218 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 219 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 220 {
 221         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
 222         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
 223         dev->touch = pkt[0] & 0x01;
 224
 225         return 1;
 226 }
 227 #endif
 228
 229
 230 /*****************************************************************************
 231  * 3M/Microtouch Part
 232  */
 233 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 234
 235 #define MTOUCHUSB_ASYNC_REPORT          1
 236 #define MTOUCHUSB_RESET                 7
 237 #define MTOUCHUSB_REQ_CTRLLR_ID         10
 238
 239 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 240 {
 241         dev->x = (pkt[8] << 8) | pkt[7];
 242         dev->y = (pkt[10] << 8) | pkt[9];
 243         dev->touch = (pkt[2] & 0x40) ? 1 : 0;
 244
 245         return 1;
 246 }
 247
 248 static int mtouch_init(struct usbtouch_usb *usbtouch)
 249 {
 250         int ret, i;
 251
 252         ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
 253                               MTOUCHUSB_RESET,
 254                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 255                               1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 256         dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
 257             __FUNCTION__, ret);
 258         if (ret < 0)
 259                 return ret;
 260         msleep(150);
 261
 262         for (i = 0; i < 3; i++) {
 263                 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
 264                                       MTOUCHUSB_ASYNC_REPORT,
 265                                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 266                                       1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
 267                 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
 268                     __FUNCTION__, ret);
 269                 if (ret >= 0)
 270                         break;
 271                 if (ret != -EPIPE)
 272                         return ret;
 273         }
 274
 275         return 0;
 276 }
 277 #endif
 278
 279
 280 /*****************************************************************************
 281  * ITM Part
 282  */
 283 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 284 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 285 {
 286         int touch;
 287         /*
 288          * ITM devices report invalid x/y data if not touched.
 289          * if the screen was touched before but is not touched any more
 290          * report touch as 0 with the last valid x/y data once. then stop
 291          * reporting data until touched again.
 292          */
 293         dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
 294
 295         touch = ~pkt[7] & 0x20;
 296         if (!touch) {
 297                 if (dev->touch) {
 298                         dev->touch = 0;
 299                         return 1;
 300                 }
 301
 302                 return 0;
 303         }
 304
 305         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
 306         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
 307         dev->touch = touch;
 308
 309         return 1;
 310 }
 311 #endif
 312
 313
 314 /*****************************************************************************
 315  * eTurboTouch part
 316  */
 317 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 318 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 319 {
 320         unsigned int shift;
 321
 322         /* packets should start with sync */
 323         if (!(pkt[0] & 0x80))
 324                 return 0;
 325
 326         shift = (6 - (pkt[0] & 0x03));
 327         dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
 328         dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
 329         dev->touch = (pkt[0] & 0x10) ? 1 : 0;
 330
 331         return 1;
 332 }
 333
 334 static int eturbo_get_pkt_len(unsigned char *buf, int len)
 335 {
 336         if (buf[0] & 0x80)
 337                 return 5;
 338         if (buf[0] == 0x01)
 339                 return 3;
 340         return 0;
 341 }
 342 #endif
 343
 344
 345 /*****************************************************************************
 346  * Gunze part
 347  */
 348 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 349 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 350 {
 351         if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
 352                 return 0;
 353
 354         dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
 355         dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
 356         dev->touch = pkt[0] & 0x20;
 357
 358         return 1;
 359 }
 360 #endif
 361
 362 /*****************************************************************************
 363  * DMC TSC-10/25 Part
 364  *
 365  * Documentation about the controller and it's protocol can be found at
 366  *   http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
 367  *   http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
 368  */
 369 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 370
 371 /* supported data rates. currently using 130 */
 372 #define TSC10_RATE_POINT        0x50
 373 #define TSC10_RATE_30           0x40
 374 #define TSC10_RATE_50           0x41
 375 #define TSC10_RATE_80           0x42
 376 #define TSC10_RATE_100          0x43
 377 #define TSC10_RATE_130          0x44
 378 #define TSC10_RATE_150          0x45
 379
 380 /* commands */
 381 #define TSC10_CMD_RESET         0x55
 382 #define TSC10_CMD_RATE          0x05
 383 #define TSC10_CMD_DATA1         0x01
 384
 385 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
 386 {
 387         struct usb_device *dev = usbtouch->udev;
 388         int ret;
 389         unsigned char buf[2];
 390
 391         /* reset */
 392         buf[0] = buf[1] = 0xFF;
 393         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 394                               TSC10_CMD_RESET,
 395                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 396                               0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 397         if (ret < 0)
 398                 return ret;
 399         if (buf[0] != 0x06 || buf[1] != 0x00)
 400                 return -ENODEV;
 401
 402         /* set coordinate output rate */
 403         buf[0] = buf[1] = 0xFF;
 404         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 405                               TSC10_CMD_RATE,
 406                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 407                               TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 408         if (ret < 0)
 409                 return ret;
 410         if ((buf[0] != 0x06 || buf[1] != 0x00) &&
 411             (buf[0] != 0x15 || buf[1] != 0x01))
 412                 return -ENODEV;
 413
 414         /* start sending data */
 415         ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
 416                               TSC10_CMD_DATA1,
 417                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 418                               0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 419         if (ret < 0)
 420                 return ret;
 421
 422         return 0;
 423 }
 424
 425
 426 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 427 {
 428         dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
 429         dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
 430         dev->touch = pkt[0] & 0x01;
 431
 432         return 1;
 433 }
 434 #endif
 435
 436
 437 /*****************************************************************************
 438  * IRTOUCH Part
 439  */
 440 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 441 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 442 {
 443         dev->x = (pkt[3] << 8) | pkt[2];
 444         dev->y = (pkt[5] << 8) | pkt[4];
 445         dev->touch = (pkt[1] & 0x03) ? 1 : 0;
 446
 447         return 1;
 448 }
 449 #endif
 450
 451
 452 /*****************************************************************************
 453  * IdealTEK URTC1000 Part
 454  */
 455 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 456 static int idealtek_get_pkt_len(unsigned char *buf, int len)
 457 {
 458         if (buf[0] & 0x80)
 459                 return 5;
 460         if (buf[0] == 0x01)
 461                 return len;
 462         return 0;
 463 }
 464
 465 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 466 {
 467         switch (pkt[0] & 0x98) {
 468         case 0x88:
 469                 /* touch data in IdealTEK mode */
 470                 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
 471                 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
 472                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 473                 return 1;
 474
 475         case 0x98:
 476                 /* touch data in MT emulation mode */
 477                 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
 478                 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
 479                 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
 480                 return 1;
 481
 482         default:
 483                 return 0;
 484         }
 485 }
 486 #endif
 487
 488 /*****************************************************************************
 489  * General Touch Part
 490  */
 491 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 492 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 493 {
 494         dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ;
 495         dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ;
 496         dev->press = pkt[5] & 0xff;
 497         dev->touch = pkt[0] & 0x01;
 498
 499         return 1;
 500 }
 501 #endif
 502
 503 /*****************************************************************************
 504  * the different device descriptors
 505  */
 506 static struct usbtouch_device_info usbtouch_dev_info[] = {
 507 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
 508         [DEVTYPE_EGALAX] = {
 509                 .min_xc         = 0x0,
 510                 .max_xc         = 0x07ff,
 511                 .min_yc         = 0x0,
 512                 .max_yc         = 0x07ff,
 513                 .rept_size      = 16,
 514                 .flags          = USBTOUCH_FLG_BUFFER,
 515                 .process_pkt    = usbtouch_process_multi,
 516                 .get_pkt_len    = egalax_get_pkt_len,
 517                 .read_data      = egalax_read_data,
 518         },
 519 #endif
 520
 521 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
 522         [DEVTYPE_PANJIT] = {
 523                 .min_xc         = 0x0,
 524                 .max_xc         = 0x0fff,
 525                 .min_yc         = 0x0,
 526                 .max_yc         = 0x0fff,
 527                 .rept_size      = 8,
 528                 .read_data      = panjit_read_data,
 529         },
 530 #endif
 531
 532 #ifdef CONFIG_TOUCHSCREEN_USB_3M
 533         [DEVTYPE_3M] = {
 534                 .min_xc         = 0x0,
 535                 .max_xc         = 0x4000,
 536                 .min_yc         = 0x0,
 537                 .max_yc         = 0x4000,
 538                 .rept_size      = 11,
 539                 .read_data      = mtouch_read_data,
 540                 .init           = mtouch_init,
 541         },
 542 #endif
 543
 544 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
 545         [DEVTYPE_ITM] = {
 546                 .min_xc         = 0x0,
 547                 .max_xc         = 0x0fff,
 548                 .min_yc         = 0x0,
 549                 .max_yc         = 0x0fff,
 550                 .max_press      = 0xff,
 551                 .rept_size      = 8,
 552                 .read_data      = itm_read_data,
 553         },
 554 #endif
 555
 556 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
 557         [DEVTYPE_ETURBO] = {
 558                 .min_xc         = 0x0,
 559                 .max_xc         = 0x07ff,
 560                 .min_yc         = 0x0,
 561                 .max_yc         = 0x07ff,
 562                 .rept_size      = 8,
 563                 .flags          = USBTOUCH_FLG_BUFFER,
 564                 .process_pkt    = usbtouch_process_multi,
 565                 .get_pkt_len    = eturbo_get_pkt_len,
 566                 .read_data      = eturbo_read_data,
 567         },
 568 #endif
 569
 570 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
 571         [DEVTYPE_GUNZE] = {
 572                 .min_xc         = 0x0,
 573                 .max_xc         = 0x0fff,
 574                 .min_yc         = 0x0,
 575                 .max_yc         = 0x0fff,
 576                 .rept_size      = 4,
 577                 .read_data      = gunze_read_data,
 578         },
 579 #endif
 580
 581 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
 582         [DEVTYPE_DMC_TSC10] = {
 583                 .min_xc         = 0x0,
 584                 .max_xc         = 0x03ff,
 585                 .min_yc         = 0x0,
 586                 .max_yc         = 0x03ff,
 587                 .rept_size      = 5,
 588                 .init           = dmc_tsc10_init,
 589                 .read_data      = dmc_tsc10_read_data,
 590         },
 591 #endif
 592
 593 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
 594         [DEVTYPE_IRTOUCH] = {
 595                 .min_xc         = 0x0,
 596                 .max_xc         = 0x0fff,
 597                 .min_yc         = 0x0,
 598                 .max_yc         = 0x0fff,
 599                 .rept_size      = 8,
 600                 .read_data      = irtouch_read_data,
 601         },
 602 #endif
 603
 604 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
 605         [DEVTYPE_IDEALTEK] = {
 606                 .min_xc         = 0x0,
 607                 .max_xc         = 0x0fff,
 608                 .min_yc         = 0x0,
 609                 .max_yc         = 0x0fff,
 610                 .rept_size      = 8,
 611                 .flags          = USBTOUCH_FLG_BUFFER,
 612                 .process_pkt    = usbtouch_process_multi,
 613                 .get_pkt_len    = idealtek_get_pkt_len,
 614                 .read_data      = idealtek_read_data,
 615         },
 616 #endif
 617
 618 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
 619         [DEVTYPE_GENERAL_TOUCH] = {
 620                 .min_xc         = 0x0,
 621                 .max_xc         = 0x0500,
 622                 .min_yc         = 0x0,
 623                 .max_yc         = 0x0500,
 624                 .rept_size      = 7,
 625                 .read_data      = general_touch_read_data,
 626         }
 627 #endif
 628
 629 };
 630
 631
 632 /*****************************************************************************
 633  * Generic Part
 634  */
 635 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
 636                                  unsigned char *pkt, int len)
 637 {
 638         struct usbtouch_device_info *type = usbtouch->type;
 639
 640         if (!type->read_data(usbtouch, pkt))
 641                         return;
 642
 643         input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
 644
 645         if (swap_xy) {
 646                 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
 647                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
 648         } else {
 649                 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
 650                 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
 651         }
 652         if (type->max_press)
 653                 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
 654         input_sync(usbtouch->input);
 655 }
 656
 657
 658 #ifdef MULTI_PACKET
 659 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
 660                                    unsigned char *pkt, int len)
 661 {
 662         unsigned char *buffer;
 663         int pkt_len, pos, buf_len, tmp;
 664
 665         /* process buffer */
 666         if (unlikely(usbtouch->buf_len)) {
 667                 /* try to get size */
 668                 pkt_len = usbtouch->type->get_pkt_len(
 669                                 usbtouch->buffer, usbtouch->buf_len);
 670
 671                 /* drop? */
 672                 if (unlikely(!pkt_len))
 673                         goto out_flush_buf;
 674
 675                 /* need to append -pkt_len bytes before able to get size */
 676                 if (unlikely(pkt_len < 0)) {
 677                         int append = -pkt_len;
 678                         if (unlikely(append > len))
 679                                append = len;
 680                         if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
 681                                 goto out_flush_buf;
 682                         memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
 683                         usbtouch->buf_len += append;
 684
 685                         pkt_len = usbtouch->type->get_pkt_len(
 686                                         usbtouch->buffer, usbtouch->buf_len);
 687                         if (pkt_len < 0)
 688                                 return;
 689                 }
 690
 691                 /* append */
 692                 tmp = pkt_len - usbtouch->buf_len;
 693                 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
 694                         goto out_flush_buf;
 695                 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
 696                 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
 697
 698                 buffer = pkt + tmp;
 699                 buf_len = len - tmp;
 700         } else {
 701                 buffer = pkt;
 702                 buf_len = len;
 703         }
 704
 705         /* loop over the received packet, process */
 706         pos = 0;
 707         while (pos < buf_len) {
 708                 /* get packet len */
 709                 pkt_len = usbtouch->type->get_pkt_len(buffer + pos, len);
 710
 711                 /* unknown packet: drop everything */
 712                 if (unlikely(!pkt_len))
 713                         goto out_flush_buf;
 714
 715                 /* full packet: process */
 716                 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
 717                         usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
 718                 } else {
 719                         /* incomplete packet: save in buffer */
 720                         memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
 721                         usbtouch->buf_len = buf_len - pos;
 722                         return;
 723                 }
 724                 pos += pkt_len;
 725         }
 726
 727 out_flush_buf:
 728         usbtouch->buf_len = 0;
 729         return;
 730 }
 731 #endif
 732
 733
 734 static void usbtouch_irq(struct urb *urb)
 735 {
 736         struct usbtouch_usb *usbtouch = urb->context;
 737         int retval;
 738
 739         switch (urb->status) {
 740         case 0:
 741                 /* success */
 742                 break;
 743         case -ETIME:
 744                 /* this urb is timing out */
 745                 dbg("%s - urb timed out - was the device unplugged?",
 746                     __FUNCTION__);
 747                 return;
 748         case -ECONNRESET:
 749         case -ENOENT:
 750         case -ESHUTDOWN:
 751                 /* this urb is terminated, clean up */
 752                 dbg("%s - urb shutting down with status: %d",
 753                     __FUNCTION__, urb->status);
 754                 return;
 755         default:
 756                 dbg("%s - nonzero urb status received: %d",
 757                     __FUNCTION__, urb->status);
 758                 goto exit;
 759         }
 760
 761         usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
 762
 763 exit:
 764         retval = usb_submit_urb(urb, GFP_ATOMIC);
 765         if (retval)
 766                 err("%s - usb_submit_urb failed with result: %d",
 767                     __FUNCTION__, retval);
 768 }
 769
 770 static int usbtouch_open(struct input_dev *input)
 771 {
 772         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
 773
 774         usbtouch->irq->dev = usbtouch->udev;
 775
 776         if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
 777                 return -EIO;
 778
 779         return 0;
 780 }
 781
 782 static void usbtouch_close(struct input_dev *input)
 783 {
 784         struct usbtouch_usb *usbtouch = input_get_drvdata(input);
 785
 786         usb_kill_urb(usbtouch->irq);
 787 }
 788
 789
 790 static void usbtouch_free_buffers(struct usb_device *udev,
 791                                   struct usbtouch_usb *usbtouch)
 792 {
 793         usb_buffer_free(udev, usbtouch->type->rept_size,
 794                         usbtouch->data, usbtouch->data_dma);
 795         kfree(usbtouch->buffer);
 796 }
 797
 798
 799 static int usbtouch_probe(struct usb_interface *intf,
 800                           const struct usb_device_id *id)
 801 {
 802         struct usbtouch_usb *usbtouch;
 803         struct input_dev *input_dev;
 804         struct usb_host_interface *interface;
 805         struct usb_endpoint_descriptor *endpoint;
 806         struct usb_device *udev = interface_to_usbdev(intf);
 807         struct usbtouch_device_info *type;
 808         int err = -ENOMEM;
 809
 810         interface = intf->cur_altsetting;
 811         endpoint = &interface->endpoint[0].desc;
 812
 813         usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
 814         input_dev = input_allocate_device();
 815         if (!usbtouch || !input_dev)
 816                 goto out_free;
 817
 818         type = &usbtouch_dev_info[id->driver_info];
 819         usbtouch->type = type;
 820         if (!type->process_pkt)
 821                 type->process_pkt = usbtouch_process_pkt;
 822
 823         usbtouch->data = usb_buffer_alloc(udev, type->rept_size,
 824                                           GFP_KERNEL, &usbtouch->data_dma);
 825         if (!usbtouch->data)
 826                 goto out_free;
 827
 828         if (type->flags & USBTOUCH_FLG_BUFFER) {
 829                 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
 830                 if (!usbtouch->buffer)
 831                         goto out_free_buffers;
 832         }
 833
 834         usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
 835         if (!usbtouch->irq) {
 836                 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__);
 837                 goto out_free_buffers;
 838         }
 839
 840         usbtouch->udev = udev;
 841         usbtouch->input = input_dev;
 842
 843         if (udev->manufacturer)
 844                 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
 845
 846         if (udev->product) {
 847                 if (udev->manufacturer)
 848                         strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
 849                 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
 850         }
 851
 852         if (!strlen(usbtouch->name))
 853                 snprintf(usbtouch->name, sizeof(usbtouch->name),
 854                         "USB Touchscreen %04x:%04x",
 855                          le16_to_cpu(udev->descriptor.idVendor),
 856                          le16_to_cpu(udev->descriptor.idProduct));
 857
 858         usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
 859         strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
 860
 861         input_dev->name = usbtouch->name;
 862         input_dev->phys = usbtouch->phys;
 863         usb_to_input_id(udev, &input_dev->id);
 864         input_dev->dev.parent = &intf->dev;
 865
 866         input_set_drvdata(input_dev, usbtouch);
 867
 868         input_dev->open = usbtouch_open;
 869         input_dev->close = usbtouch_close;
 870
 871         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 872         input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
 873         input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
 874         input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
 875         if (type->max_press)
 876                 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
 877                                      type->max_press, 0, 0);
 878
 879         usb_fill_int_urb(usbtouch->irq, usbtouch->udev,
 880                          usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress),
 881                          usbtouch->data, type->rept_size,
 882                          usbtouch_irq, usbtouch, endpoint->bInterval);
 883
 884         usbtouch->irq->dev = usbtouch->udev;
 885         usbtouch->irq->transfer_dma = usbtouch->data_dma;
 886         usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 887
 888         /* device specific init */
 889         if (type->init) {
 890                 err = type->init(usbtouch);
 891                 if (err) {
 892                         dbg("%s - type->init() failed, err: %d", __FUNCTION__, err);
 893                         goto out_free_buffers;
 894                 }
 895         }
 896
 897         err = input_register_device(usbtouch->input);
 898         if (err) {
 899                 dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err);
 900                 goto out_free_buffers;
 901         }
 902
 903         usb_set_intfdata(intf, usbtouch);
 904
 905         return 0;
 906
 907 out_free_buffers:
 908         usbtouch_free_buffers(udev, usbtouch);
 909 out_free:
 910         input_free_device(input_dev);
 911         kfree(usbtouch);
 912         return err;
 913 }
 914
 915 static void usbtouch_disconnect(struct usb_interface *intf)
 916 {
 917         struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
 918
 919         dbg("%s - called", __FUNCTION__);
 920
 921         if (!usbtouch)
 922                 return;
 923
 924         dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__);
 925         usb_set_intfdata(intf, NULL);
 926         usb_kill_urb(usbtouch->irq);
 927         input_unregister_device(usbtouch->input);
 928         usb_free_urb(usbtouch->irq);
 929         usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
 930         kfree(usbtouch);
 931 }
 932
 933 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
 934
 935 static struct usb_driver usbtouch_driver = {
 936         .name           = "usbtouchscreen",
 937         .probe          = usbtouch_probe,
 938         .disconnect     = usbtouch_disconnect,
 939         .id_table       = usbtouch_devices,
 940 };
 941
 942 static int __init usbtouch_init(void)
 943 {
 944         return usb_register(&usbtouch_driver);
 945 }
 946
 947 static void __exit usbtouch_cleanup(void)
 948 {
 949         usb_deregister(&usbtouch_driver);
 950 }
 951
 952 module_init(usbtouch_init);
 953 module_exit(usbtouch_cleanup);
 954
 955 MODULE_AUTHOR(DRIVER_AUTHOR);
 956 MODULE_DESCRIPTION(DRIVER_DESC);
 957 MODULE_LICENSE("GPL");
 958
 959 MODULE_ALIAS("touchkitusb");
 960 MODULE_ALIAS("itmtouch");
 961 MODULE_ALIAS("mtouchusb");