Daniel Ritz | 1d3e202 | 2006-03-29 22:41:07 +0200 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * usbtouchscreen.c |
| 3 | * Driver for USB Touchscreens, supporting those devices: |
| 4 | * - eGalax Touchkit |
| 5 | * - 3M/Microtouch |
| 6 | * - ITM |
| 7 | * - PanJit TouchSet |
| 8 | * |
| 9 | * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch> |
| 10 | * Copyright (C) by Todd E. Johnson (mtouchusb.c) |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License as |
| 14 | * published by the Free Software Foundation; either version 2 of the |
| 15 | * License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, but |
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * Driver is based on touchkitusb.c |
| 27 | * - ITM parts are from itmtouch.c |
| 28 | * - 3M parts are from mtouchusb.c |
| 29 | * - PanJit parts are from an unmerged driver by Lanslott Gish |
| 30 | * |
| 31 | *****************************************************************************/ |
| 32 | |
| 33 | //#define DEBUG |
| 34 | |
| 35 | #include <linux/config.h> |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/input.h> |
| 39 | #include <linux/module.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/usb.h> |
| 42 | #include <linux/usb_input.h> |
| 43 | |
| 44 | |
| 45 | #define DRIVER_VERSION "v0.3" |
| 46 | #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>" |
| 47 | #define DRIVER_DESC "USB Touchscreen Driver" |
| 48 | |
| 49 | static int swap_xy; |
| 50 | module_param(swap_xy, bool, 0644); |
| 51 | MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); |
| 52 | |
| 53 | /* device specifc data/functions */ |
| 54 | struct usbtouch_usb; |
| 55 | struct usbtouch_device_info { |
| 56 | int min_xc, max_xc; |
| 57 | int min_yc, max_yc; |
| 58 | int min_press, max_press; |
| 59 | int rept_size; |
| 60 | int flags; |
| 61 | |
| 62 | void (*process_pkt) (struct usbtouch_usb *usbtouch, struct pt_regs *regs, unsigned char *pkt, int len); |
| 63 | int (*read_data) (unsigned char *pkt, int *x, int *y, int *touch, int *press); |
| 64 | int (*init) (struct usbtouch_usb *usbtouch); |
| 65 | }; |
| 66 | |
| 67 | #define USBTOUCH_FLG_BUFFER 0x01 |
| 68 | |
| 69 | |
| 70 | /* a usbtouch device */ |
| 71 | struct usbtouch_usb { |
| 72 | unsigned char *data; |
| 73 | dma_addr_t data_dma; |
| 74 | unsigned char *buffer; |
| 75 | int buf_len; |
| 76 | struct urb *irq; |
| 77 | struct usb_device *udev; |
| 78 | struct input_dev *input; |
| 79 | struct usbtouch_device_info *type; |
| 80 | char name[128]; |
| 81 | char phys[64]; |
| 82 | }; |
| 83 | |
| 84 | static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch, |
| 85 | struct pt_regs *regs, unsigned char *pkt, int len); |
| 86 | |
| 87 | /* device types */ |
| 88 | enum { |
| 89 | DEVTPYE_DUMMY = -1, |
| 90 | DEVTYPE_EGALAX, |
| 91 | DEVTYPE_PANJIT, |
| 92 | DEVTYPE_3M, |
| 93 | DEVTYPE_ITM, |
| 94 | }; |
| 95 | |
| 96 | static struct usb_device_id usbtouch_devices[] = { |
| 97 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX |
| 98 | {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| 99 | {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| 100 | {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
| 101 | {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
| 102 | #endif |
| 103 | |
| 104 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT |
| 105 | {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT}, |
| 106 | {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT}, |
| 107 | {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT}, |
| 108 | {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT}, |
| 109 | #endif |
| 110 | |
| 111 | #ifdef CONFIG_USB_TOUCHSCREEN_3M |
| 112 | {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M}, |
| 113 | #endif |
| 114 | |
| 115 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM |
| 116 | {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM}, |
| 117 | #endif |
| 118 | |
| 119 | {} |
| 120 | }; |
| 121 | |
| 122 | |
| 123 | /***************************************************************************** |
| 124 | * eGalax part |
| 125 | */ |
| 126 | |
| 127 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX |
| 128 | |
| 129 | #define EGALAX_PKT_TYPE_MASK 0xFE |
| 130 | #define EGALAX_PKT_TYPE_REPT 0x80 |
| 131 | #define EGALAX_PKT_TYPE_DIAG 0x0A |
| 132 | |
| 133 | static int egalax_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) |
| 134 | { |
| 135 | if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT) |
| 136 | return 0; |
| 137 | |
| 138 | *x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F); |
| 139 | *y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F); |
| 140 | *touch = pkt[0] & 0x01; |
| 141 | |
| 142 | return 1; |
| 143 | |
| 144 | } |
| 145 | |
| 146 | static int egalax_get_pkt_len(unsigned char *buf) |
| 147 | { |
| 148 | switch (buf[0] & EGALAX_PKT_TYPE_MASK) { |
| 149 | case EGALAX_PKT_TYPE_REPT: |
| 150 | return 5; |
| 151 | |
| 152 | case EGALAX_PKT_TYPE_DIAG: |
| 153 | return buf[1] + 2; |
| 154 | } |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static void egalax_process(struct usbtouch_usb *usbtouch, struct pt_regs *regs, |
| 160 | unsigned char *pkt, int len) |
| 161 | { |
| 162 | unsigned char *buffer; |
| 163 | int pkt_len, buf_len, pos; |
| 164 | |
| 165 | /* if the buffer contains data, append */ |
| 166 | if (unlikely(usbtouch->buf_len)) { |
| 167 | int tmp; |
| 168 | |
| 169 | /* if only 1 byte in buffer, add another one to get length */ |
| 170 | if (usbtouch->buf_len == 1) |
| 171 | usbtouch->buffer[1] = pkt[0]; |
| 172 | |
| 173 | pkt_len = egalax_get_pkt_len(usbtouch->buffer); |
| 174 | |
| 175 | /* unknown packet: drop everything */ |
| 176 | if (!pkt_len) |
| 177 | return; |
| 178 | |
| 179 | /* append, process */ |
| 180 | tmp = pkt_len - usbtouch->buf_len; |
| 181 | memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp); |
| 182 | usbtouch_process_pkt(usbtouch, regs, usbtouch->buffer, pkt_len); |
| 183 | |
| 184 | buffer = pkt + tmp; |
| 185 | buf_len = len - tmp; |
| 186 | } else { |
| 187 | buffer = pkt; |
| 188 | buf_len = len; |
| 189 | } |
| 190 | |
| 191 | /* only one byte left in buffer */ |
| 192 | if (unlikely(buf_len == 1)) { |
| 193 | usbtouch->buffer[0] = buffer[0]; |
| 194 | usbtouch->buf_len = 1; |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | /* loop over the buffer */ |
| 199 | pos = 0; |
| 200 | while (pos < buf_len) { |
| 201 | /* get packet len */ |
| 202 | pkt_len = egalax_get_pkt_len(buffer + pos); |
| 203 | |
| 204 | /* unknown packet: drop everything */ |
| 205 | if (unlikely(!pkt_len)) |
| 206 | return; |
| 207 | |
| 208 | /* full packet: process */ |
| 209 | if (likely(pkt_len <= buf_len)) { |
| 210 | usbtouch_process_pkt(usbtouch, regs, buffer + pos, pkt_len); |
| 211 | } else { |
| 212 | /* incomplete packet: save in buffer */ |
| 213 | memcpy(usbtouch->buffer, buffer + pos, buf_len - pos); |
| 214 | usbtouch->buf_len = buf_len - pos; |
| 215 | } |
| 216 | pos += pkt_len; |
| 217 | } |
| 218 | } |
| 219 | #endif |
| 220 | |
| 221 | |
| 222 | /***************************************************************************** |
| 223 | * PanJit Part |
| 224 | */ |
| 225 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT |
| 226 | static int panjit_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) |
| 227 | { |
| 228 | *x = ((pkt[2] & 0x0F) << 8) | pkt[1]; |
| 229 | *y = ((pkt[4] & 0x0F) << 8) | pkt[3]; |
| 230 | *touch = pkt[0] & 0x01; |
| 231 | |
| 232 | return 1; |
| 233 | } |
| 234 | #endif |
| 235 | |
| 236 | |
| 237 | /***************************************************************************** |
| 238 | * 3M/Microtouch Part |
| 239 | */ |
| 240 | #ifdef CONFIG_USB_TOUCHSCREEN_3M |
| 241 | |
| 242 | #define MTOUCHUSB_ASYNC_REPORT 1 |
| 243 | #define MTOUCHUSB_RESET 7 |
| 244 | #define MTOUCHUSB_REQ_CTRLLR_ID 10 |
| 245 | |
| 246 | static int mtouch_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) |
| 247 | { |
| 248 | *x = (pkt[8] << 8) | pkt[7]; |
| 249 | *y = (pkt[10] << 8) | pkt[9]; |
| 250 | *touch = (pkt[2] & 0x40) ? 1 : 0; |
| 251 | |
| 252 | return 1; |
| 253 | } |
| 254 | |
| 255 | static int mtouch_init(struct usbtouch_usb *usbtouch) |
| 256 | { |
| 257 | int ret; |
| 258 | |
| 259 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), |
| 260 | MTOUCHUSB_RESET, |
| 261 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 262 | 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); |
| 263 | dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d", |
| 264 | __FUNCTION__, ret); |
| 265 | if (ret < 0) |
| 266 | return ret; |
| 267 | |
| 268 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), |
| 269 | MTOUCHUSB_ASYNC_REPORT, |
| 270 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 271 | 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT); |
| 272 | dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d", |
| 273 | __FUNCTION__, ret); |
| 274 | if (ret < 0) |
| 275 | return ret; |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | #endif |
| 280 | |
| 281 | |
| 282 | /***************************************************************************** |
| 283 | * ITM Part |
| 284 | */ |
| 285 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM |
| 286 | static int itm_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) |
| 287 | { |
| 288 | *x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F); |
| 289 | *x = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F); |
| 290 | *press = ((pkt[2] & 0x1F) << 7) | (pkt[5] & 0x7F); |
| 291 | *touch = ~pkt[7] & 0x20; |
| 292 | |
| 293 | return 1; |
| 294 | } |
| 295 | #endif |
| 296 | |
| 297 | |
| 298 | /***************************************************************************** |
| 299 | * the different device descriptors |
| 300 | */ |
| 301 | static struct usbtouch_device_info usbtouch_dev_info[] = { |
| 302 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX |
| 303 | [DEVTYPE_EGALAX] = { |
| 304 | .min_xc = 0x0, |
| 305 | .max_xc = 0x07ff, |
| 306 | .min_yc = 0x0, |
| 307 | .max_yc = 0x07ff, |
| 308 | .rept_size = 16, |
| 309 | .flags = USBTOUCH_FLG_BUFFER, |
| 310 | .process_pkt = egalax_process, |
| 311 | .read_data = egalax_read_data, |
| 312 | }, |
| 313 | #endif |
| 314 | |
| 315 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT |
| 316 | [DEVTYPE_PANJIT] = { |
| 317 | .min_xc = 0x0, |
| 318 | .max_xc = 0x0fff, |
| 319 | .min_yc = 0x0, |
| 320 | .max_yc = 0x0fff, |
| 321 | .rept_size = 8, |
| 322 | .read_data = panjit_read_data, |
| 323 | }, |
| 324 | #endif |
| 325 | |
| 326 | #ifdef CONFIG_USB_TOUCHSCREEN_3M |
| 327 | [DEVTYPE_3M] = { |
| 328 | .min_xc = 0x0, |
| 329 | .max_xc = 0x4000, |
| 330 | .min_yc = 0x0, |
| 331 | .max_yc = 0x4000, |
| 332 | .rept_size = 11, |
| 333 | .read_data = mtouch_read_data, |
| 334 | .init = mtouch_init, |
| 335 | }, |
| 336 | #endif |
| 337 | |
| 338 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM |
| 339 | [DEVTYPE_ITM] = { |
| 340 | .min_xc = 0x0, |
| 341 | .max_xc = 0x0fff, |
| 342 | .min_yc = 0x0, |
| 343 | .max_yc = 0x0fff, |
| 344 | .max_press = 0xff, |
| 345 | .rept_size = 8, |
| 346 | .read_data = itm_read_data, |
| 347 | }, |
| 348 | #endif |
| 349 | }; |
| 350 | |
| 351 | |
| 352 | /***************************************************************************** |
| 353 | * Generic Part |
| 354 | */ |
| 355 | static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch, |
| 356 | struct pt_regs *regs, unsigned char *pkt, int len) |
| 357 | { |
| 358 | int x, y, touch, press; |
| 359 | struct usbtouch_device_info *type = usbtouch->type; |
| 360 | |
| 361 | if (!type->read_data(pkt, &x, &y, &touch, &press)) |
| 362 | return; |
| 363 | |
| 364 | input_regs(usbtouch->input, regs); |
| 365 | input_report_key(usbtouch->input, BTN_TOUCH, touch); |
| 366 | |
| 367 | if (swap_xy) { |
| 368 | input_report_abs(usbtouch->input, ABS_X, y); |
| 369 | input_report_abs(usbtouch->input, ABS_Y, x); |
| 370 | } else { |
| 371 | input_report_abs(usbtouch->input, ABS_X, x); |
| 372 | input_report_abs(usbtouch->input, ABS_Y, y); |
| 373 | } |
| 374 | if (type->max_press) |
| 375 | input_report_abs(usbtouch->input, ABS_PRESSURE, press); |
| 376 | input_sync(usbtouch->input); |
| 377 | } |
| 378 | |
| 379 | |
| 380 | static void usbtouch_irq(struct urb *urb, struct pt_regs *regs) |
| 381 | { |
| 382 | struct usbtouch_usb *usbtouch = urb->context; |
| 383 | int retval; |
| 384 | |
| 385 | switch (urb->status) { |
| 386 | case 0: |
| 387 | /* success */ |
| 388 | break; |
| 389 | case -ETIMEDOUT: |
| 390 | /* this urb is timing out */ |
| 391 | dbg("%s - urb timed out - was the device unplugged?", |
| 392 | __FUNCTION__); |
| 393 | return; |
| 394 | case -ECONNRESET: |
| 395 | case -ENOENT: |
| 396 | case -ESHUTDOWN: |
| 397 | /* this urb is terminated, clean up */ |
| 398 | dbg("%s - urb shutting down with status: %d", |
| 399 | __FUNCTION__, urb->status); |
| 400 | return; |
| 401 | default: |
| 402 | dbg("%s - nonzero urb status received: %d", |
| 403 | __FUNCTION__, urb->status); |
| 404 | goto exit; |
| 405 | } |
| 406 | |
| 407 | usbtouch->type->process_pkt(usbtouch, regs, usbtouch->data, urb->actual_length); |
| 408 | |
| 409 | exit: |
| 410 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
| 411 | if (retval) |
| 412 | err("%s - usb_submit_urb failed with result: %d", |
| 413 | __FUNCTION__, retval); |
| 414 | } |
| 415 | |
| 416 | static int usbtouch_open(struct input_dev *input) |
| 417 | { |
| 418 | struct usbtouch_usb *usbtouch = input->private; |
| 419 | |
| 420 | usbtouch->irq->dev = usbtouch->udev; |
| 421 | |
| 422 | if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) |
| 423 | return -EIO; |
| 424 | |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | static void usbtouch_close(struct input_dev *input) |
| 429 | { |
| 430 | struct usbtouch_usb *usbtouch = input->private; |
| 431 | |
| 432 | usb_kill_urb(usbtouch->irq); |
| 433 | } |
| 434 | |
| 435 | |
| 436 | static void usbtouch_free_buffers(struct usb_device *udev, |
| 437 | struct usbtouch_usb *usbtouch) |
| 438 | { |
| 439 | if (usbtouch->data) |
| 440 | usb_buffer_free(udev, usbtouch->type->rept_size, |
| 441 | usbtouch->data, usbtouch->data_dma); |
| 442 | kfree(usbtouch->buffer); |
| 443 | } |
| 444 | |
| 445 | |
| 446 | static int usbtouch_probe(struct usb_interface *intf, |
| 447 | const struct usb_device_id *id) |
| 448 | { |
| 449 | struct usbtouch_usb *usbtouch; |
| 450 | struct input_dev *input_dev; |
| 451 | struct usb_host_interface *interface; |
| 452 | struct usb_endpoint_descriptor *endpoint; |
| 453 | struct usb_device *udev = interface_to_usbdev(intf); |
| 454 | struct usbtouch_device_info *type; |
| 455 | int err; |
| 456 | |
| 457 | interface = intf->cur_altsetting; |
| 458 | endpoint = &interface->endpoint[0].desc; |
| 459 | |
| 460 | usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL); |
| 461 | input_dev = input_allocate_device(); |
| 462 | if (!usbtouch || !input_dev) |
| 463 | goto out_free; |
| 464 | |
| 465 | type = &usbtouch_dev_info[id->driver_info]; |
| 466 | usbtouch->type = type; |
| 467 | if (!type->process_pkt) |
| 468 | type->process_pkt = usbtouch_process_pkt; |
| 469 | |
| 470 | usbtouch->data = usb_buffer_alloc(udev, type->rept_size, |
| 471 | SLAB_KERNEL, &usbtouch->data_dma); |
| 472 | if (!usbtouch->data) |
| 473 | goto out_free; |
| 474 | |
| 475 | if (type->flags & USBTOUCH_FLG_BUFFER) { |
| 476 | usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL); |
| 477 | if (!usbtouch->buffer) |
| 478 | goto out_free_buffers; |
| 479 | } |
| 480 | |
| 481 | usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL); |
| 482 | if (!usbtouch->irq) { |
| 483 | dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__); |
| 484 | goto out_free_buffers; |
| 485 | } |
| 486 | |
| 487 | usbtouch->udev = udev; |
| 488 | usbtouch->input = input_dev; |
| 489 | |
| 490 | if (udev->manufacturer) |
| 491 | strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name)); |
| 492 | |
| 493 | if (udev->product) { |
| 494 | if (udev->manufacturer) |
| 495 | strlcat(usbtouch->name, " ", sizeof(usbtouch->name)); |
| 496 | strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name)); |
| 497 | } |
| 498 | |
| 499 | if (!strlen(usbtouch->name)) |
| 500 | snprintf(usbtouch->name, sizeof(usbtouch->name), |
| 501 | "USB Touchscreen %04x:%04x", |
| 502 | le16_to_cpu(udev->descriptor.idVendor), |
| 503 | le16_to_cpu(udev->descriptor.idProduct)); |
| 504 | |
| 505 | usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys)); |
| 506 | strlcpy(usbtouch->phys, "/input0", sizeof(usbtouch->phys)); |
| 507 | |
| 508 | input_dev->name = usbtouch->name; |
| 509 | input_dev->phys = usbtouch->phys; |
| 510 | usb_to_input_id(udev, &input_dev->id); |
| 511 | input_dev->cdev.dev = &intf->dev; |
| 512 | input_dev->private = usbtouch; |
| 513 | input_dev->open = usbtouch_open; |
| 514 | input_dev->close = usbtouch_close; |
| 515 | |
| 516 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); |
| 517 | input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); |
| 518 | input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0); |
| 519 | input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0); |
| 520 | if (type->max_press) |
| 521 | input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press, |
| 522 | type->max_press, 0, 0); |
| 523 | |
| 524 | usb_fill_int_urb(usbtouch->irq, usbtouch->udev, |
| 525 | usb_rcvintpipe(usbtouch->udev, 0x81), |
| 526 | usbtouch->data, type->rept_size, |
| 527 | usbtouch_irq, usbtouch, endpoint->bInterval); |
| 528 | |
| 529 | usbtouch->irq->transfer_dma = usbtouch->data_dma; |
| 530 | usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 531 | |
| 532 | /* device specific init */ |
| 533 | if (type->init) { |
| 534 | err = type->init(usbtouch); |
| 535 | if (err) { |
| 536 | dbg("%s - type->init() failed, err: %d", __FUNCTION__, err); |
| 537 | goto out_free_buffers; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | err = input_register_device(usbtouch->input); |
| 542 | if (err) { |
| 543 | dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err); |
| 544 | goto out_free_buffers; |
| 545 | } |
| 546 | |
| 547 | usb_set_intfdata(intf, usbtouch); |
| 548 | |
| 549 | return 0; |
| 550 | |
| 551 | out_free_buffers: |
| 552 | usbtouch_free_buffers(udev, usbtouch); |
| 553 | out_free: |
| 554 | input_free_device(input_dev); |
| 555 | kfree(usbtouch); |
| 556 | return -ENOMEM; |
| 557 | } |
| 558 | |
| 559 | static void usbtouch_disconnect(struct usb_interface *intf) |
| 560 | { |
| 561 | struct usbtouch_usb *usbtouch = usb_get_intfdata(intf); |
| 562 | |
| 563 | dbg("%s - called", __FUNCTION__); |
| 564 | |
| 565 | if (!usbtouch) |
| 566 | return; |
| 567 | |
| 568 | dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__); |
| 569 | usb_set_intfdata(intf, NULL); |
| 570 | usb_kill_urb(usbtouch->irq); |
| 571 | input_unregister_device(usbtouch->input); |
| 572 | usb_free_urb(usbtouch->irq); |
| 573 | usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); |
| 574 | kfree(usbtouch); |
| 575 | } |
| 576 | |
| 577 | MODULE_DEVICE_TABLE(usb, usbtouch_devices); |
| 578 | |
| 579 | static struct usb_driver usbtouch_driver = { |
| 580 | .name = "usbtouchscreen", |
| 581 | .probe = usbtouch_probe, |
| 582 | .disconnect = usbtouch_disconnect, |
| 583 | .id_table = usbtouch_devices, |
| 584 | }; |
| 585 | |
| 586 | static int __init usbtouch_init(void) |
| 587 | { |
| 588 | return usb_register(&usbtouch_driver); |
| 589 | } |
| 590 | |
| 591 | static void __exit usbtouch_cleanup(void) |
| 592 | { |
| 593 | usb_deregister(&usbtouch_driver); |
| 594 | } |
| 595 | |
| 596 | module_init(usbtouch_init); |
| 597 | module_exit(usbtouch_cleanup); |
| 598 | |
| 599 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 600 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 601 | MODULE_LICENSE("GPL"); |
| 602 | |
| 603 | MODULE_ALIAS("touchkitusb"); |
| 604 | MODULE_ALIAS("itmtouch"); |
| 605 | MODULE_ALIAS("mtouchusb"); |