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 * 18 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch> 19 * Copyright (C) by Todd E. Johnson (mtouchusb.c) 20 * 21 * This program is free software; you can redistribute it and/or 22 * modify it under the terms of the GNU General Public License as 23 * published by the Free Software Foundation; either version 2 of the 24 * License, or (at your option) any later version. 25 * 26 * This program is distributed in the hope that it will be useful, but 27 * WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 29 * General Public License for more details. 30 * 31 * You should have received a copy of the GNU General Public License 32 * along with this program; if not, write to the Free Software 33 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 34 * 35 * Driver is based on touchkitusb.c 36 * - ITM parts are from itmtouch.c 37 * - 3M parts are from mtouchusb.c 38 * - PanJit parts are from an unmerged driver by Lanslott Gish 39 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged 40 * driver from Marius Vollmer 41 * 42 *****************************************************************************/ 43 44 //#define DEBUG 45 46 #include <linux/kernel.h> 47 #include <linux/slab.h> 48 #include <linux/input.h> 49 #include <linux/module.h> 50 #include <linux/init.h> 51 #include <linux/usb.h> 52 #include <linux/usb/input.h> 53 #include <linux/hid.h> 54 55 56 #define DRIVER_VERSION "v0.6" 57 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>" 58 #define DRIVER_DESC "USB Touchscreen Driver" 59 60 static int swap_xy; 61 module_param(swap_xy, bool, 0644); 62 MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); 63 64 static int hwcalib_xy; 65 module_param(hwcalib_xy, bool, 0644); 66 MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available"); 67 68 /* device specifc data/functions */ 69 struct usbtouch_usb; 70 struct usbtouch_device_info { 71 int min_xc, max_xc; 72 int min_yc, max_yc; 73 int min_press, max_press; 74 int rept_size; 75 76 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len); 77 78 /* 79 * used to get the packet len. possible return values: 80 * > 0: packet len 81 * = 0: skip one byte 82 * < 0: -return value more bytes needed 83 */ 84 int (*get_pkt_len) (unsigned char *pkt, int len); 85 86 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt); 87 int (*init) (struct usbtouch_usb *usbtouch); 88 }; 89 90 /* a usbtouch device */ 91 struct usbtouch_usb { 92 unsigned char *data; 93 dma_addr_t data_dma; 94 unsigned char *buffer; 95 int buf_len; 96 struct urb *irq; 97 struct usb_device *udev; 98 struct input_dev *input; 99 struct usbtouch_device_info *type; 100 char name[128]; 101 char phys[64]; 102 103 int x, y; 104 int touch, press; 105 }; 106 107 108 /* device types */ 109 enum { 110 DEVTYPE_IGNORE = -1, 111 DEVTYPE_EGALAX, 112 DEVTYPE_PANJIT, 113 DEVTYPE_3M, 114 DEVTYPE_ITM, 115 DEVTYPE_ETURBO, 116 DEVTYPE_GUNZE, 117 DEVTYPE_DMC_TSC10, 118 DEVTYPE_IRTOUCH, 119 DEVTYPE_IDEALTEK, 120 DEVTYPE_GENERAL_TOUCH, 121 DEVTYPE_GOTOP, 122 DEVTYPE_JASTEC, 123 DEVTYPE_E2I, 124 }; 125 126 #define USB_DEVICE_HID_CLASS(vend, prod) \ 127 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \ 128 | USB_DEVICE_ID_MATCH_INT_PROTOCOL \ 129 | USB_DEVICE_ID_MATCH_DEVICE, \ 130 .idVendor = (vend), \ 131 .idProduct = (prod), \ 132 .bInterfaceClass = USB_INTERFACE_CLASS_HID, \ 133 .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE 134 135 static struct usb_device_id usbtouch_devices[] = { 136 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX 137 /* ignore the HID capable devices, handled by usbhid */ 138 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE}, 139 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE}, 140 141 /* normal device IDs */ 142 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, 143 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX}, 144 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, 145 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX}, 146 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX}, 147 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX}, 148 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX}, 149 #endif 150 151 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT 152 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT}, 153 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT}, 154 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT}, 155 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT}, 156 #endif 157 158 #ifdef CONFIG_TOUCHSCREEN_USB_3M 159 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M}, 160 #endif 161 162 #ifdef CONFIG_TOUCHSCREEN_USB_ITM 163 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM}, 164 #endif 165 166 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO 167 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO}, 168 #endif 169 170 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE 171 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE}, 172 #endif 173 174 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10 175 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10}, 176 #endif 177 178 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH 179 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH}, 180 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH}, 181 #endif 182 183 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK 184 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK}, 185 #endif 186 187 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH 188 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH}, 189 #endif 190 191 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP 192 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP}, 193 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP}, 194 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP}, 195 #endif 196 197 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC 198 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC}, 199 #endif 200 201 #ifdef CONFIG_TOUCHSCREEN_USB_E2I 202 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I}, 203 #endif 204 {} 205 }; 206 207 208 /***************************************************************************** 209 * e2i Part 210 */ 211 212 #ifdef CONFIG_TOUCHSCREEN_USB_E2I 213 static int e2i_init(struct usbtouch_usb *usbtouch) 214 { 215 int ret; 216 217 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), 218 0x01, 0x02, 0x0000, 0x0081, 219 NULL, 0, USB_CTRL_SET_TIMEOUT); 220 221 dbg("%s - usb_control_msg - E2I_RESET - bytes|err: %d", 222 __func__, ret); 223 return ret; 224 } 225 226 static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 227 { 228 int tmp = (pkt[0] << 8) | pkt[1]; 229 dev->x = (pkt[2] << 8) | pkt[3]; 230 dev->y = (pkt[4] << 8) | pkt[5]; 231 232 tmp = tmp - 0xA000; 233 dev->touch = (tmp > 0); 234 dev->press = (tmp > 0 ? tmp : 0); 235 236 return 1; 237 } 238 #endif 239 240 241 /***************************************************************************** 242 * eGalax part 243 */ 244 245 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX 246 247 #ifndef MULTI_PACKET 248 #define MULTI_PACKET 249 #endif 250 251 #define EGALAX_PKT_TYPE_MASK 0xFE 252 #define EGALAX_PKT_TYPE_REPT 0x80 253 #define EGALAX_PKT_TYPE_DIAG 0x0A 254 255 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 256 { 257 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT) 258 return 0; 259 260 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F); 261 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F); 262 dev->touch = pkt[0] & 0x01; 263 264 return 1; 265 } 266 267 static int egalax_get_pkt_len(unsigned char *buf, int len) 268 { 269 switch (buf[0] & EGALAX_PKT_TYPE_MASK) { 270 case EGALAX_PKT_TYPE_REPT: 271 return 5; 272 273 case EGALAX_PKT_TYPE_DIAG: 274 if (len < 2) 275 return -1; 276 277 return buf[1] + 2; 278 } 279 280 return 0; 281 } 282 #endif 283 284 285 /***************************************************************************** 286 * PanJit Part 287 */ 288 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT 289 static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 290 { 291 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1]; 292 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3]; 293 dev->touch = pkt[0] & 0x01; 294 295 return 1; 296 } 297 #endif 298 299 300 /***************************************************************************** 301 * 3M/Microtouch Part 302 */ 303 #ifdef CONFIG_TOUCHSCREEN_USB_3M 304 305 #define MTOUCHUSB_ASYNC_REPORT 1 306 #define MTOUCHUSB_RESET 7 307 #define MTOUCHUSB_REQ_CTRLLR_ID 10 308 309 static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 310 { 311 if (hwcalib_xy) { 312 dev->x = (pkt[4] << 8) | pkt[3]; 313 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]); 314 } else { 315 dev->x = (pkt[8] << 8) | pkt[7]; 316 dev->y = (pkt[10] << 8) | pkt[9]; 317 } 318 dev->touch = (pkt[2] & 0x40) ? 1 : 0; 319 320 return 1; 321 } 322 323 static int mtouch_init(struct usbtouch_usb *usbtouch) 324 { 325 int ret, i; 326 327 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), 328 MTOUCHUSB_RESET, 329 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 330 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); 331 dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d", 332 __func__, ret); 333 if (ret < 0) 334 return ret; 335 msleep(150); 336 337 for (i = 0; i < 3; i++) { 338 ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), 339 MTOUCHUSB_ASYNC_REPORT, 340 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 341 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT); 342 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d", 343 __func__, ret); 344 if (ret >= 0) 345 break; 346 if (ret != -EPIPE) 347 return ret; 348 } 349 350 /* Default min/max xy are the raw values, override if using hw-calib */ 351 if (hwcalib_xy) { 352 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0); 353 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0); 354 } 355 356 return 0; 357 } 358 #endif 359 360 361 /***************************************************************************** 362 * ITM Part 363 */ 364 #ifdef CONFIG_TOUCHSCREEN_USB_ITM 365 static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 366 { 367 int touch; 368 /* 369 * ITM devices report invalid x/y data if not touched. 370 * if the screen was touched before but is not touched any more 371 * report touch as 0 with the last valid x/y data once. then stop 372 * reporting data until touched again. 373 */ 374 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F); 375 376 touch = ~pkt[7] & 0x20; 377 if (!touch) { 378 if (dev->touch) { 379 dev->touch = 0; 380 return 1; 381 } 382 383 return 0; 384 } 385 386 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F); 387 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F); 388 dev->touch = touch; 389 390 return 1; 391 } 392 #endif 393 394 395 /***************************************************************************** 396 * eTurboTouch part 397 */ 398 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO 399 #ifndef MULTI_PACKET 400 #define MULTI_PACKET 401 #endif 402 static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 403 { 404 unsigned int shift; 405 406 /* packets should start with sync */ 407 if (!(pkt[0] & 0x80)) 408 return 0; 409 410 shift = (6 - (pkt[0] & 0x03)); 411 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift; 412 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift; 413 dev->touch = (pkt[0] & 0x10) ? 1 : 0; 414 415 return 1; 416 } 417 418 static int eturbo_get_pkt_len(unsigned char *buf, int len) 419 { 420 if (buf[0] & 0x80) 421 return 5; 422 if (buf[0] == 0x01) 423 return 3; 424 return 0; 425 } 426 #endif 427 428 429 /***************************************************************************** 430 * Gunze part 431 */ 432 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE 433 static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 434 { 435 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80)) 436 return 0; 437 438 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F); 439 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F); 440 dev->touch = pkt[0] & 0x20; 441 442 return 1; 443 } 444 #endif 445 446 /***************************************************************************** 447 * DMC TSC-10/25 Part 448 * 449 * Documentation about the controller and it's protocol can be found at 450 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf 451 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf 452 */ 453 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10 454 455 /* supported data rates. currently using 130 */ 456 #define TSC10_RATE_POINT 0x50 457 #define TSC10_RATE_30 0x40 458 #define TSC10_RATE_50 0x41 459 #define TSC10_RATE_80 0x42 460 #define TSC10_RATE_100 0x43 461 #define TSC10_RATE_130 0x44 462 #define TSC10_RATE_150 0x45 463 464 /* commands */ 465 #define TSC10_CMD_RESET 0x55 466 #define TSC10_CMD_RATE 0x05 467 #define TSC10_CMD_DATA1 0x01 468 469 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch) 470 { 471 struct usb_device *dev = usbtouch->udev; 472 int ret = -ENOMEM; 473 unsigned char *buf; 474 475 buf = kmalloc(2, GFP_KERNEL); 476 if (!buf) 477 goto err_nobuf; 478 /* reset */ 479 buf[0] = buf[1] = 0xFF; 480 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), 481 TSC10_CMD_RESET, 482 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 483 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT); 484 if (ret < 0) 485 goto err_out; 486 if (buf[0] != 0x06) { 487 ret = -ENODEV; 488 goto err_out; 489 } 490 491 /* set coordinate output rate */ 492 buf[0] = buf[1] = 0xFF; 493 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), 494 TSC10_CMD_RATE, 495 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 496 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT); 497 if (ret < 0) 498 goto err_out; 499 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) { 500 ret = -ENODEV; 501 goto err_out; 502 } 503 504 /* start sending data */ 505 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), 506 TSC10_CMD_DATA1, 507 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 508 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); 509 err_out: 510 kfree(buf); 511 err_nobuf: 512 return ret; 513 } 514 515 516 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 517 { 518 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1]; 519 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3]; 520 dev->touch = pkt[0] & 0x01; 521 522 return 1; 523 } 524 #endif 525 526 527 /***************************************************************************** 528 * IRTOUCH Part 529 */ 530 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH 531 static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 532 { 533 dev->x = (pkt[3] << 8) | pkt[2]; 534 dev->y = (pkt[5] << 8) | pkt[4]; 535 dev->touch = (pkt[1] & 0x03) ? 1 : 0; 536 537 return 1; 538 } 539 #endif 540 541 542 /***************************************************************************** 543 * IdealTEK URTC1000 Part 544 */ 545 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK 546 #ifndef MULTI_PACKET 547 #define MULTI_PACKET 548 #endif 549 static int idealtek_get_pkt_len(unsigned char *buf, int len) 550 { 551 if (buf[0] & 0x80) 552 return 5; 553 if (buf[0] == 0x01) 554 return len; 555 return 0; 556 } 557 558 static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 559 { 560 switch (pkt[0] & 0x98) { 561 case 0x88: 562 /* touch data in IdealTEK mode */ 563 dev->x = (pkt[1] << 5) | (pkt[2] >> 2); 564 dev->y = (pkt[3] << 5) | (pkt[4] >> 2); 565 dev->touch = (pkt[0] & 0x40) ? 1 : 0; 566 return 1; 567 568 case 0x98: 569 /* touch data in MT emulation mode */ 570 dev->x = (pkt[2] << 5) | (pkt[1] >> 2); 571 dev->y = (pkt[4] << 5) | (pkt[3] >> 2); 572 dev->touch = (pkt[0] & 0x40) ? 1 : 0; 573 return 1; 574 575 default: 576 return 0; 577 } 578 } 579 #endif 580 581 /***************************************************************************** 582 * General Touch Part 583 */ 584 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH 585 static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 586 { 587 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1] ; 588 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3] ; 589 dev->press = pkt[5] & 0xff; 590 dev->touch = pkt[0] & 0x01; 591 592 return 1; 593 } 594 #endif 595 596 /***************************************************************************** 597 * GoTop Part 598 */ 599 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP 600 static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 601 { 602 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2]; 603 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3]; 604 dev->touch = pkt[0] & 0x01; 605 606 return 1; 607 } 608 #endif 609 610 /***************************************************************************** 611 * JASTEC Part 612 */ 613 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC 614 static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt) 615 { 616 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f); 617 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f); 618 dev->touch = (pkt[0] & 0x40) >> 6; 619 620 return 1; 621 } 622 #endif 623 624 625 /***************************************************************************** 626 * the different device descriptors 627 */ 628 #ifdef MULTI_PACKET 629 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, 630 unsigned char *pkt, int len); 631 #endif 632 633 static struct usbtouch_device_info usbtouch_dev_info[] = { 634 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX 635 [DEVTYPE_EGALAX] = { 636 .min_xc = 0x0, 637 .max_xc = 0x07ff, 638 .min_yc = 0x0, 639 .max_yc = 0x07ff, 640 .rept_size = 16, 641 .process_pkt = usbtouch_process_multi, 642 .get_pkt_len = egalax_get_pkt_len, 643 .read_data = egalax_read_data, 644 }, 645 #endif 646 647 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT 648 [DEVTYPE_PANJIT] = { 649 .min_xc = 0x0, 650 .max_xc = 0x0fff, 651 .min_yc = 0x0, 652 .max_yc = 0x0fff, 653 .rept_size = 8, 654 .read_data = panjit_read_data, 655 }, 656 #endif 657 658 #ifdef CONFIG_TOUCHSCREEN_USB_3M 659 [DEVTYPE_3M] = { 660 .min_xc = 0x0, 661 .max_xc = 0x4000, 662 .min_yc = 0x0, 663 .max_yc = 0x4000, 664 .rept_size = 11, 665 .read_data = mtouch_read_data, 666 .init = mtouch_init, 667 }, 668 #endif 669 670 #ifdef CONFIG_TOUCHSCREEN_USB_ITM 671 [DEVTYPE_ITM] = { 672 .min_xc = 0x0, 673 .max_xc = 0x0fff, 674 .min_yc = 0x0, 675 .max_yc = 0x0fff, 676 .max_press = 0xff, 677 .rept_size = 8, 678 .read_data = itm_read_data, 679 }, 680 #endif 681 682 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO 683 [DEVTYPE_ETURBO] = { 684 .min_xc = 0x0, 685 .max_xc = 0x07ff, 686 .min_yc = 0x0, 687 .max_yc = 0x07ff, 688 .rept_size = 8, 689 .process_pkt = usbtouch_process_multi, 690 .get_pkt_len = eturbo_get_pkt_len, 691 .read_data = eturbo_read_data, 692 }, 693 #endif 694 695 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE 696 [DEVTYPE_GUNZE] = { 697 .min_xc = 0x0, 698 .max_xc = 0x0fff, 699 .min_yc = 0x0, 700 .max_yc = 0x0fff, 701 .rept_size = 4, 702 .read_data = gunze_read_data, 703 }, 704 #endif 705 706 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10 707 [DEVTYPE_DMC_TSC10] = { 708 .min_xc = 0x0, 709 .max_xc = 0x03ff, 710 .min_yc = 0x0, 711 .max_yc = 0x03ff, 712 .rept_size = 5, 713 .init = dmc_tsc10_init, 714 .read_data = dmc_tsc10_read_data, 715 }, 716 #endif 717 718 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH 719 [DEVTYPE_IRTOUCH] = { 720 .min_xc = 0x0, 721 .max_xc = 0x0fff, 722 .min_yc = 0x0, 723 .max_yc = 0x0fff, 724 .rept_size = 8, 725 .read_data = irtouch_read_data, 726 }, 727 #endif 728 729 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK 730 [DEVTYPE_IDEALTEK] = { 731 .min_xc = 0x0, 732 .max_xc = 0x0fff, 733 .min_yc = 0x0, 734 .max_yc = 0x0fff, 735 .rept_size = 8, 736 .process_pkt = usbtouch_process_multi, 737 .get_pkt_len = idealtek_get_pkt_len, 738 .read_data = idealtek_read_data, 739 }, 740 #endif 741 742 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH 743 [DEVTYPE_GENERAL_TOUCH] = { 744 .min_xc = 0x0, 745 .max_xc = 0x0500, 746 .min_yc = 0x0, 747 .max_yc = 0x0500, 748 .rept_size = 7, 749 .read_data = general_touch_read_data, 750 }, 751 #endif 752 753 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP 754 [DEVTYPE_GOTOP] = { 755 .min_xc = 0x0, 756 .max_xc = 0x03ff, 757 .min_yc = 0x0, 758 .max_yc = 0x03ff, 759 .rept_size = 4, 760 .read_data = gotop_read_data, 761 }, 762 #endif 763 764 #ifdef CONFIG_TOUCHSCREEN_USB_JASTEC 765 [DEVTYPE_JASTEC] = { 766 .min_xc = 0x0, 767 .max_xc = 0x0fff, 768 .min_yc = 0x0, 769 .max_yc = 0x0fff, 770 .rept_size = 4, 771 .read_data = jastec_read_data, 772 }, 773 #endif 774 775 #ifdef CONFIG_TOUCHSCREEN_USB_E2I 776 [DEVTYPE_E2I] = { 777 .min_xc = 0x0, 778 .max_xc = 0x7fff, 779 .min_yc = 0x0, 780 .max_yc = 0x7fff, 781 .rept_size = 6, 782 .init = e2i_init, 783 .read_data = e2i_read_data, 784 }, 785 #endif 786 }; 787 788 789 /***************************************************************************** 790 * Generic Part 791 */ 792 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch, 793 unsigned char *pkt, int len) 794 { 795 struct usbtouch_device_info *type = usbtouch->type; 796 797 if (!type->read_data(usbtouch, pkt)) 798 return; 799 800 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch); 801 802 if (swap_xy) { 803 input_report_abs(usbtouch->input, ABS_X, usbtouch->y); 804 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x); 805 } else { 806 input_report_abs(usbtouch->input, ABS_X, usbtouch->x); 807 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y); 808 } 809 if (type->max_press) 810 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press); 811 input_sync(usbtouch->input); 812 } 813 814 815 #ifdef MULTI_PACKET 816 static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, 817 unsigned char *pkt, int len) 818 { 819 unsigned char *buffer; 820 int pkt_len, pos, buf_len, tmp; 821 822 /* process buffer */ 823 if (unlikely(usbtouch->buf_len)) { 824 /* try to get size */ 825 pkt_len = usbtouch->type->get_pkt_len( 826 usbtouch->buffer, usbtouch->buf_len); 827 828 /* drop? */ 829 if (unlikely(!pkt_len)) 830 goto out_flush_buf; 831 832 /* need to append -pkt_len bytes before able to get size */ 833 if (unlikely(pkt_len < 0)) { 834 int append = -pkt_len; 835 if (unlikely(append > len)) 836 append = len; 837 if (usbtouch->buf_len + append >= usbtouch->type->rept_size) 838 goto out_flush_buf; 839 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append); 840 usbtouch->buf_len += append; 841 842 pkt_len = usbtouch->type->get_pkt_len( 843 usbtouch->buffer, usbtouch->buf_len); 844 if (pkt_len < 0) 845 return; 846 } 847 848 /* append */ 849 tmp = pkt_len - usbtouch->buf_len; 850 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size) 851 goto out_flush_buf; 852 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp); 853 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len); 854 855 buffer = pkt + tmp; 856 buf_len = len - tmp; 857 } else { 858 buffer = pkt; 859 buf_len = len; 860 } 861 862 /* loop over the received packet, process */ 863 pos = 0; 864 while (pos < buf_len) { 865 /* get packet len */ 866 pkt_len = usbtouch->type->get_pkt_len(buffer + pos, 867 buf_len - pos); 868 869 /* unknown packet: skip one byte */ 870 if (unlikely(!pkt_len)) { 871 pos++; 872 continue; 873 } 874 875 /* full packet: process */ 876 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) { 877 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len); 878 } else { 879 /* incomplete packet: save in buffer */ 880 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos); 881 usbtouch->buf_len = buf_len - pos; 882 return; 883 } 884 pos += pkt_len; 885 } 886 887 out_flush_buf: 888 usbtouch->buf_len = 0; 889 return; 890 } 891 #endif 892 893 894 static void usbtouch_irq(struct urb *urb) 895 { 896 struct usbtouch_usb *usbtouch = urb->context; 897 int retval; 898 899 switch (urb->status) { 900 case 0: 901 /* success */ 902 break; 903 case -ETIME: 904 /* this urb is timing out */ 905 dbg("%s - urb timed out - was the device unplugged?", 906 __func__); 907 return; 908 case -ECONNRESET: 909 case -ENOENT: 910 case -ESHUTDOWN: 911 /* this urb is terminated, clean up */ 912 dbg("%s - urb shutting down with status: %d", 913 __func__, urb->status); 914 return; 915 default: 916 dbg("%s - nonzero urb status received: %d", 917 __func__, urb->status); 918 goto exit; 919 } 920 921 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length); 922 923 exit: 924 retval = usb_submit_urb(urb, GFP_ATOMIC); 925 if (retval) 926 err("%s - usb_submit_urb failed with result: %d", 927 __func__, retval); 928 } 929 930 static int usbtouch_open(struct input_dev *input) 931 { 932 struct usbtouch_usb *usbtouch = input_get_drvdata(input); 933 934 usbtouch->irq->dev = usbtouch->udev; 935 936 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) 937 return -EIO; 938 939 return 0; 940 } 941 942 static void usbtouch_close(struct input_dev *input) 943 { 944 struct usbtouch_usb *usbtouch = input_get_drvdata(input); 945 946 usb_kill_urb(usbtouch->irq); 947 } 948 949 950 static void usbtouch_free_buffers(struct usb_device *udev, 951 struct usbtouch_usb *usbtouch) 952 { 953 usb_buffer_free(udev, usbtouch->type->rept_size, 954 usbtouch->data, usbtouch->data_dma); 955 kfree(usbtouch->buffer); 956 } 957 958 959 static int usbtouch_probe(struct usb_interface *intf, 960 const struct usb_device_id *id) 961 { 962 struct usbtouch_usb *usbtouch; 963 struct input_dev *input_dev; 964 struct usb_host_interface *interface; 965 struct usb_endpoint_descriptor *endpoint; 966 struct usb_device *udev = interface_to_usbdev(intf); 967 struct usbtouch_device_info *type; 968 int err = -ENOMEM; 969 970 /* some devices are ignored */ 971 if (id->driver_info == DEVTYPE_IGNORE) 972 return -ENODEV; 973 974 interface = intf->cur_altsetting; 975 endpoint = &interface->endpoint[0].desc; 976 977 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL); 978 input_dev = input_allocate_device(); 979 if (!usbtouch || !input_dev) 980 goto out_free; 981 982 type = &usbtouch_dev_info[id->driver_info]; 983 usbtouch->type = type; 984 if (!type->process_pkt) 985 type->process_pkt = usbtouch_process_pkt; 986 987 usbtouch->data = usb_buffer_alloc(udev, type->rept_size, 988 GFP_KERNEL, &usbtouch->data_dma); 989 if (!usbtouch->data) 990 goto out_free; 991 992 if (type->get_pkt_len) { 993 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL); 994 if (!usbtouch->buffer) 995 goto out_free_buffers; 996 } 997 998 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL); 999 if (!usbtouch->irq) { 1000 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __func__); 1001 goto out_free_buffers; 1002 } 1003 1004 usbtouch->udev = udev; 1005 usbtouch->input = input_dev; 1006 1007 if (udev->manufacturer) 1008 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name)); 1009 1010 if (udev->product) { 1011 if (udev->manufacturer) 1012 strlcat(usbtouch->name, " ", sizeof(usbtouch->name)); 1013 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name)); 1014 } 1015 1016 if (!strlen(usbtouch->name)) 1017 snprintf(usbtouch->name, sizeof(usbtouch->name), 1018 "USB Touchscreen %04x:%04x", 1019 le16_to_cpu(udev->descriptor.idVendor), 1020 le16_to_cpu(udev->descriptor.idProduct)); 1021 1022 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys)); 1023 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys)); 1024 1025 input_dev->name = usbtouch->name; 1026 input_dev->phys = usbtouch->phys; 1027 usb_to_input_id(udev, &input_dev->id); 1028 input_dev->dev.parent = &intf->dev; 1029 1030 input_set_drvdata(input_dev, usbtouch); 1031 1032 input_dev->open = usbtouch_open; 1033 input_dev->close = usbtouch_close; 1034 1035 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 1036 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); 1037 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0); 1038 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0); 1039 if (type->max_press) 1040 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press, 1041 type->max_press, 0, 0); 1042 1043 usb_fill_int_urb(usbtouch->irq, usbtouch->udev, 1044 usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress), 1045 usbtouch->data, type->rept_size, 1046 usbtouch_irq, usbtouch, endpoint->bInterval); 1047 1048 usbtouch->irq->dev = usbtouch->udev; 1049 usbtouch->irq->transfer_dma = usbtouch->data_dma; 1050 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1051 1052 /* device specific init */ 1053 if (type->init) { 1054 err = type->init(usbtouch); 1055 if (err) { 1056 dbg("%s - type->init() failed, err: %d", __func__, err); 1057 goto out_free_buffers; 1058 } 1059 } 1060 1061 err = input_register_device(usbtouch->input); 1062 if (err) { 1063 dbg("%s - input_register_device failed, err: %d", __func__, err); 1064 goto out_free_buffers; 1065 } 1066 1067 usb_set_intfdata(intf, usbtouch); 1068 1069 return 0; 1070 1071 out_free_buffers: 1072 usbtouch_free_buffers(udev, usbtouch); 1073 out_free: 1074 input_free_device(input_dev); 1075 kfree(usbtouch); 1076 return err; 1077 } 1078 1079 static void usbtouch_disconnect(struct usb_interface *intf) 1080 { 1081 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf); 1082 1083 dbg("%s - called", __func__); 1084 1085 if (!usbtouch) 1086 return; 1087 1088 dbg("%s - usbtouch is initialized, cleaning up", __func__); 1089 usb_set_intfdata(intf, NULL); 1090 usb_kill_urb(usbtouch->irq); 1091 input_unregister_device(usbtouch->input); 1092 usb_free_urb(usbtouch->irq); 1093 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); 1094 kfree(usbtouch); 1095 } 1096 1097 MODULE_DEVICE_TABLE(usb, usbtouch_devices); 1098 1099 static struct usb_driver usbtouch_driver = { 1100 .name = "usbtouchscreen", 1101 .probe = usbtouch_probe, 1102 .disconnect = usbtouch_disconnect, 1103 .id_table = usbtouch_devices, 1104 }; 1105 1106 static int __init usbtouch_init(void) 1107 { 1108 return usb_register(&usbtouch_driver); 1109 } 1110 1111 static void __exit usbtouch_cleanup(void) 1112 { 1113 usb_deregister(&usbtouch_driver); 1114 } 1115 1116 module_init(usbtouch_init); 1117 module_exit(usbtouch_cleanup); 1118 1119 MODULE_AUTHOR(DRIVER_AUTHOR); 1120 MODULE_DESCRIPTION(DRIVER_DESC); 1121 MODULE_LICENSE("GPL"); 1122 1123 MODULE_ALIAS("touchkitusb"); 1124 MODULE_ALIAS("itmtouch"); 1125 MODULE_ALIAS("mtouchusb"); 1126