drivers/nfc/pn533/usb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for NXP PN533 NFC Chip - USB transport layer
   4  *
   5  * Copyright (C) 2011 Instituto Nokia de Tecnologia
   6  * Copyright (C) 2012-2013 Tieto Poland
   7  */
   8
   9 #include <linux/device.h>
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/slab.h>
  13 #include <linux/usb.h>
  14 #include <linux/nfc.h>
  15 #include <linux/netdevice.h>
  16 #include <net/nfc/nfc.h>
  17 #include "pn533.h"
  18
  19 #define VERSION "0.1"
  20
  21 #define PN533_VENDOR_ID 0x4CC
  22 #define PN533_PRODUCT_ID 0x2533
  23
  24 #define SCM_VENDOR_ID 0x4E6
  25 #define SCL3711_PRODUCT_ID 0x5591
  26
  27 #define SONY_VENDOR_ID         0x054c
  28 #define PASORI_PRODUCT_ID      0x02e1
  29
  30 #define ACS_VENDOR_ID 0x072f
  31 #define ACR122U_PRODUCT_ID 0x2200
  32
  33 static const struct usb_device_id pn533_usb_table[] = {
  34         { USB_DEVICE(PN533_VENDOR_ID, PN533_PRODUCT_ID),
  35           .driver_info = PN533_DEVICE_STD },
  36         { USB_DEVICE(SCM_VENDOR_ID, SCL3711_PRODUCT_ID),
  37           .driver_info = PN533_DEVICE_STD },
  38         { USB_DEVICE(SONY_VENDOR_ID, PASORI_PRODUCT_ID),
  39           .driver_info = PN533_DEVICE_PASORI },
  40         { USB_DEVICE(ACS_VENDOR_ID, ACR122U_PRODUCT_ID),
  41           .driver_info = PN533_DEVICE_ACR122U },
  42         { }
  43 };
  44 MODULE_DEVICE_TABLE(usb, pn533_usb_table);
  45
  46 struct pn533_usb_phy {
  47         struct usb_device *udev;
  48         struct usb_interface *interface;
  49
  50         struct urb *out_urb;
  51         struct urb *in_urb;
  52
  53         struct urb *ack_urb;
  54         u8 *ack_buffer;
  55
  56         struct pn533 *priv;
  57 };
  58
  59 static void pn533_recv_response(struct urb *urb)
  60 {
  61         struct pn533_usb_phy *phy = urb->context;
  62         struct sk_buff *skb = NULL;
  63
  64         if (!urb->status) {
  65                 skb = alloc_skb(urb->actual_length, GFP_ATOMIC);
  66                 if (!skb) {
  67                         nfc_err(&phy->udev->dev, "failed to alloc memory\n");
  68                 } else {
  69                         skb_put_data(skb, urb->transfer_buffer,
  70                                      urb->actual_length);
  71                 }
  72         }
  73
  74         pn533_recv_frame(phy->priv, skb, urb->status);
  75 }
  76
  77 static int pn533_submit_urb_for_response(struct pn533_usb_phy *phy, gfp_t flags)
  78 {
  79         phy->in_urb->complete = pn533_recv_response;
  80
  81         return usb_submit_urb(phy->in_urb, flags);
  82 }
  83
  84 static void pn533_recv_ack(struct urb *urb)
  85 {
  86         struct pn533_usb_phy *phy = urb->context;
  87         struct pn533 *priv = phy->priv;
  88         struct pn533_cmd *cmd = priv->cmd;
  89         struct pn533_std_frame *in_frame;
  90         int rc;
  91
  92         cmd->status = urb->status;
  93
  94         switch (urb->status) {
  95         case 0:
  96                 break; /* success */
  97         case -ECONNRESET:
  98         case -ENOENT:
  99                 dev_dbg(&phy->udev->dev,
 100                         "The urb has been stopped (status %d)\n",
 101                         urb->status);
 102                 goto sched_wq;
 103         case -ESHUTDOWN:
 104         default:
 105                 nfc_err(&phy->udev->dev,
 106                         "Urb failure (status %d)\n", urb->status);
 107                 goto sched_wq;
 108         }
 109
 110         in_frame = phy->in_urb->transfer_buffer;
 111
 112         if (!pn533_rx_frame_is_ack(in_frame)) {
 113                 nfc_err(&phy->udev->dev, "Received an invalid ack\n");
 114                 cmd->status = -EIO;
 115                 goto sched_wq;
 116         }
 117
 118         rc = pn533_submit_urb_for_response(phy, GFP_ATOMIC);
 119         if (rc) {
 120                 nfc_err(&phy->udev->dev,
 121                         "usb_submit_urb failed with result %d\n", rc);
 122                 cmd->status = rc;
 123                 goto sched_wq;
 124         }
 125
 126         return;
 127
 128 sched_wq:
 129         queue_work(priv->wq, &priv->cmd_complete_work);
 130 }
 131
 132 static int pn533_submit_urb_for_ack(struct pn533_usb_phy *phy, gfp_t flags)
 133 {
 134         phy->in_urb->complete = pn533_recv_ack;
 135
 136         return usb_submit_urb(phy->in_urb, flags);
 137 }
 138
 139 static int pn533_usb_send_ack(struct pn533 *dev, gfp_t flags)
 140 {
 141         struct pn533_usb_phy *phy = dev->phy;
 142         static const u8 ack[6] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00};
 143         /* spec 7.1.1.3:  Preamble, SoPC (2), ACK Code (2), Postamble */
 144
 145         if (!phy->ack_buffer) {
 146                 phy->ack_buffer = kmemdup(ack, sizeof(ack), flags);
 147                 if (!phy->ack_buffer)
 148                         return -ENOMEM;
 149         }
 150
 151         phy->ack_urb->transfer_buffer = phy->ack_buffer;
 152         phy->ack_urb->transfer_buffer_length = sizeof(ack);
 153         return usb_submit_urb(phy->ack_urb, flags);
 154 }
 155
 156 struct pn533_out_arg {
 157         struct pn533_usb_phy *phy;
 158         struct completion done;
 159 };
 160
 161 static int pn533_usb_send_frame(struct pn533 *dev,
 162                                 struct sk_buff *out)
 163 {
 164         struct pn533_usb_phy *phy = dev->phy;
 165         struct pn533_out_arg arg;
 166         void *cntx;
 167         int rc;
 168
 169         if (phy->priv == NULL)
 170                 phy->priv = dev;
 171
 172         phy->out_urb->transfer_buffer = out->data;
 173         phy->out_urb->transfer_buffer_length = out->len;
 174
 175         print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
 176                              out->data, out->len, false);
 177
 178         arg.phy = phy;
 179         init_completion(&arg.done);
 180         cntx = phy->out_urb->context;
 181         phy->out_urb->context = &arg;
 182
 183         rc = usb_submit_urb(phy->out_urb, GFP_KERNEL);
 184         if (rc)
 185                 return rc;
 186
 187         wait_for_completion(&arg.done);
 188         phy->out_urb->context = cntx;
 189
 190         if (dev->protocol_type == PN533_PROTO_REQ_RESP) {
 191                 /* request for response for sent packet directly */
 192                 rc = pn533_submit_urb_for_response(phy, GFP_KERNEL);
 193                 if (rc)
 194                         goto error;
 195         } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) {
 196                 /* request for ACK if that's the case */
 197                 rc = pn533_submit_urb_for_ack(phy, GFP_KERNEL);
 198                 if (rc)
 199                         goto error;
 200         }
 201
 202         return 0;
 203
 204 error:
 205         usb_unlink_urb(phy->out_urb);
 206         return rc;
 207 }
 208
 209 static void pn533_usb_abort_cmd(struct pn533 *dev, gfp_t flags)
 210 {
 211         struct pn533_usb_phy *phy = dev->phy;
 212
 213         /* ACR122U does not support any command which aborts last
 214          * issued command i.e. as ACK for standard PN533. Additionally,
 215          * it behaves stange, sending broken or incorrect responses,
 216          * when we cancel urb before the chip will send response.
 217          */
 218         if (dev->device_type == PN533_DEVICE_ACR122U)
 219                 return;
 220
 221         /* An ack will cancel the last issued command */
 222         pn533_usb_send_ack(dev, flags);
 223
 224         /* cancel the urb request */
 225         usb_kill_urb(phy->in_urb);
 226 }
 227
 228 /* ACR122 specific structs and functions */
 229
 230 /* ACS ACR122 pn533 frame definitions */
 231 #define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \
 232                                           + 2)
 233 #define PN533_ACR122_TX_FRAME_TAIL_LEN 0
 234 #define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \
 235                                           + 2)
 236 #define PN533_ACR122_RX_FRAME_TAIL_LEN 2
 237 #define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN
 238
 239 /* CCID messages types */
 240 #define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62
 241 #define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B
 242
 243 #define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83
 244
 245
 246 struct pn533_acr122_ccid_hdr {
 247         u8 type;
 248         u32 datalen;
 249         u8 slot;
 250         u8 seq;
 251
 252         /*
 253          * 3 msg specific bytes or status, error and 1 specific
 254          * byte for reposnse msg
 255          */
 256         u8 params[3];
 257 } __packed;
 258
 259 struct pn533_acr122_apdu_hdr {
 260         u8 class;
 261         u8 ins;
 262         u8 p1;
 263         u8 p2;
 264 } __packed;
 265
 266 struct pn533_acr122_tx_frame {
 267         struct pn533_acr122_ccid_hdr ccid;
 268         struct pn533_acr122_apdu_hdr apdu;
 269         u8 datalen;
 270         u8 data[]; /* pn533 frame: TFI ... */
 271 } __packed;
 272
 273 struct pn533_acr122_rx_frame {
 274         struct pn533_acr122_ccid_hdr ccid;
 275         u8 data[]; /* pn533 frame : TFI ... */
 276 } __packed;
 277
 278 static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code)
 279 {
 280         struct pn533_acr122_tx_frame *frame = _frame;
 281
 282         frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE;
 283         /* sizeof(apdu_hdr) + sizeof(datalen) */
 284         frame->ccid.datalen = sizeof(frame->apdu) + 1;
 285         frame->ccid.slot = 0;
 286         frame->ccid.seq = 0;
 287         frame->ccid.params[0] = 0;
 288         frame->ccid.params[1] = 0;
 289         frame->ccid.params[2] = 0;
 290
 291         frame->data[0] = PN533_STD_FRAME_DIR_OUT;
 292         frame->data[1] = cmd_code;
 293         frame->datalen = 2;  /* data[0] + data[1] */
 294
 295         frame->apdu.class = 0xFF;
 296         frame->apdu.ins = 0;
 297         frame->apdu.p1 = 0;
 298         frame->apdu.p2 = 0;
 299 }
 300
 301 static void pn533_acr122_tx_frame_finish(void *_frame)
 302 {
 303         struct pn533_acr122_tx_frame *frame = _frame;
 304
 305         frame->ccid.datalen += frame->datalen;
 306 }
 307
 308 static void pn533_acr122_tx_update_payload_len(void *_frame, int len)
 309 {
 310         struct pn533_acr122_tx_frame *frame = _frame;
 311
 312         frame->datalen += len;
 313 }
 314
 315 static bool pn533_acr122_is_rx_frame_valid(void *_frame, struct pn533 *dev)
 316 {
 317         struct pn533_acr122_rx_frame *frame = _frame;
 318
 319         if (frame->ccid.type != 0x83)
 320                 return false;
 321
 322         if (!frame->ccid.datalen)
 323                 return false;
 324
 325         if (frame->data[frame->ccid.datalen - 2] == 0x63)
 326                 return false;
 327
 328         return true;
 329 }
 330
 331 static int pn533_acr122_rx_frame_size(void *frame)
 332 {
 333         struct pn533_acr122_rx_frame *f = frame;
 334
 335         /* f->ccid.datalen already includes tail length */
 336         return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen;
 337 }
 338
 339 static u8 pn533_acr122_get_cmd_code(void *frame)
 340 {
 341         struct pn533_acr122_rx_frame *f = frame;
 342
 343         return PN533_FRAME_CMD(f);
 344 }
 345
 346 static struct pn533_frame_ops pn533_acr122_frame_ops = {
 347         .tx_frame_init = pn533_acr122_tx_frame_init,
 348         .tx_frame_finish = pn533_acr122_tx_frame_finish,
 349         .tx_update_payload_len = pn533_acr122_tx_update_payload_len,
 350         .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN,
 351         .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN,
 352
 353         .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid,
 354         .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN,
 355         .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN,
 356         .rx_frame_size = pn533_acr122_rx_frame_size,
 357
 358         .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN,
 359         .get_cmd_code = pn533_acr122_get_cmd_code,
 360 };
 361
 362 struct pn533_acr122_poweron_rdr_arg {
 363         int rc;
 364         struct completion done;
 365 };
 366
 367 static void pn533_acr122_poweron_rdr_resp(struct urb *urb)
 368 {
 369         struct pn533_acr122_poweron_rdr_arg *arg = urb->context;
 370
 371         print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1,
 372                        urb->transfer_buffer, urb->transfer_buffer_length,
 373                        false);
 374
 375         arg->rc = urb->status;
 376         complete(&arg->done);
 377 }
 378
 379 static int pn533_acr122_poweron_rdr(struct pn533_usb_phy *phy)
 380 {
 381         /* Power on th reader (CCID cmd) */
 382         u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON,
 383                       0, 0, 0, 0, 0, 0, 3, 0, 0};
 384         char *buffer;
 385         int transferred;
 386         int rc;
 387         void *cntx;
 388         struct pn533_acr122_poweron_rdr_arg arg;
 389
 390         buffer = kmemdup(cmd, sizeof(cmd), GFP_KERNEL);
 391         if (!buffer)
 392                 return -ENOMEM;
 393
 394         init_completion(&arg.done);
 395         cntx = phy->in_urb->context;  /* backup context */
 396
 397         phy->in_urb->complete = pn533_acr122_poweron_rdr_resp;
 398         phy->in_urb->context = &arg;
 399
 400         print_hex_dump_debug("ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1,
 401                        cmd, sizeof(cmd), false);
 402
 403         rc = usb_bulk_msg(phy->udev, phy->out_urb->pipe, buffer, sizeof(cmd),
 404                           &transferred, 5000);
 405         kfree(buffer);
 406         if (rc || (transferred != sizeof(cmd))) {
 407                 nfc_err(&phy->udev->dev,
 408                         "Reader power on cmd error %d\n", rc);
 409                 return rc;
 410         }
 411
 412         rc =  usb_submit_urb(phy->in_urb, GFP_KERNEL);
 413         if (rc) {
 414                 nfc_err(&phy->udev->dev,
 415                         "Can't submit reader poweron cmd response %d\n", rc);
 416                 return rc;
 417         }
 418
 419         wait_for_completion(&arg.done);
 420         phy->in_urb->context = cntx; /* restore context */
 421
 422         return arg.rc;
 423 }
 424
 425 static void pn533_out_complete(struct urb *urb)
 426 {
 427         struct pn533_out_arg *arg = urb->context;
 428         struct pn533_usb_phy *phy = arg->phy;
 429
 430         switch (urb->status) {
 431         case 0:
 432                 break; /* success */
 433         case -ECONNRESET:
 434         case -ENOENT:
 435                 dev_dbg(&phy->udev->dev,
 436                         "The urb has been stopped (status %d)\n",
 437                         urb->status);
 438                 break;
 439         case -ESHUTDOWN:
 440         default:
 441                 nfc_err(&phy->udev->dev,
 442                         "Urb failure (status %d)\n",
 443                         urb->status);
 444         }
 445
 446         complete(&arg->done);
 447 }
 448
 449 static void pn533_ack_complete(struct urb *urb)
 450 {
 451         struct pn533_usb_phy *phy = urb->context;
 452
 453         switch (urb->status) {
 454         case 0:
 455                 break; /* success */
 456         case -ECONNRESET:
 457         case -ENOENT:
 458                 dev_dbg(&phy->udev->dev,
 459                         "The urb has been stopped (status %d)\n",
 460                         urb->status);
 461                 break;
 462         case -ESHUTDOWN:
 463         default:
 464                 nfc_err(&phy->udev->dev,
 465                         "Urb failure (status %d)\n",
 466                         urb->status);
 467         }
 468 }
 469
 470 static const struct pn533_phy_ops usb_phy_ops = {
 471         .send_frame = pn533_usb_send_frame,
 472         .send_ack = pn533_usb_send_ack,
 473         .abort_cmd = pn533_usb_abort_cmd,
 474 };
 475
 476 static int pn533_usb_probe(struct usb_interface *interface,
 477                         const struct usb_device_id *id)
 478 {
 479         struct pn533 *priv;
 480         struct pn533_usb_phy *phy;
 481         struct usb_host_interface *iface_desc;
 482         struct usb_endpoint_descriptor *endpoint;
 483         int in_endpoint = 0;
 484         int out_endpoint = 0;
 485         int rc = -ENOMEM;
 486         int i;
 487         u32 protocols;
 488         enum pn533_protocol_type protocol_type = PN533_PROTO_REQ_ACK_RESP;
 489         struct pn533_frame_ops *fops = NULL;
 490         unsigned char *in_buf;
 491         int in_buf_len = PN533_EXT_FRAME_HEADER_LEN +
 492                          PN533_STD_FRAME_MAX_PAYLOAD_LEN +
 493                          PN533_STD_FRAME_TAIL_LEN;
 494
 495         phy = devm_kzalloc(&interface->dev, sizeof(*phy), GFP_KERNEL);
 496         if (!phy)
 497                 return -ENOMEM;
 498
 499         in_buf = kzalloc(in_buf_len, GFP_KERNEL);
 500         if (!in_buf)
 501                 return -ENOMEM;
 502
 503         phy->udev = usb_get_dev(interface_to_usbdev(interface));
 504         phy->interface = interface;
 505
 506         iface_desc = interface->cur_altsetting;
 507         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 508                 endpoint = &iface_desc->endpoint[i].desc;
 509
 510                 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
 511                         in_endpoint = endpoint->bEndpointAddress;
 512
 513                 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
 514                         out_endpoint = endpoint->bEndpointAddress;
 515         }
 516
 517         if (!in_endpoint || !out_endpoint) {
 518                 nfc_err(&interface->dev,
 519                         "Could not find bulk-in or bulk-out endpoint\n");
 520                 rc = -ENODEV;
 521                 goto error;
 522         }
 523
 524         phy->in_urb = usb_alloc_urb(0, GFP_KERNEL);
 525         phy->out_urb = usb_alloc_urb(0, GFP_KERNEL);
 526         phy->ack_urb = usb_alloc_urb(0, GFP_KERNEL);
 527
 528         if (!phy->in_urb || !phy->out_urb || !phy->ack_urb)
 529                 goto error;
 530
 531         usb_fill_bulk_urb(phy->in_urb, phy->udev,
 532                           usb_rcvbulkpipe(phy->udev, in_endpoint),
 533                           in_buf, in_buf_len, NULL, phy);
 534
 535         usb_fill_bulk_urb(phy->out_urb, phy->udev,
 536                           usb_sndbulkpipe(phy->udev, out_endpoint),
 537                           NULL, 0, pn533_out_complete, phy);
 538         usb_fill_bulk_urb(phy->ack_urb, phy->udev,
 539                           usb_sndbulkpipe(phy->udev, out_endpoint),
 540                           NULL, 0, pn533_ack_complete, phy);
 541
 542         switch (id->driver_info) {
 543         case PN533_DEVICE_STD:
 544                 protocols = PN533_ALL_PROTOCOLS;
 545                 break;
 546
 547         case PN533_DEVICE_PASORI:
 548                 protocols = PN533_NO_TYPE_B_PROTOCOLS;
 549                 break;
 550
 551         case PN533_DEVICE_ACR122U:
 552                 protocols = PN533_NO_TYPE_B_PROTOCOLS;
 553                 fops = &pn533_acr122_frame_ops;
 554                 protocol_type = PN533_PROTO_REQ_RESP;
 555
 556                 rc = pn533_acr122_poweron_rdr(phy);
 557                 if (rc < 0) {
 558                         nfc_err(&interface->dev,
 559                                 "Couldn't poweron the reader (error %d)\n", rc);
 560                         goto error;
 561                 }
 562                 break;
 563
 564         default:
 565                 nfc_err(&interface->dev, "Unknown device type %lu\n",
 566                         id->driver_info);
 567                 rc = -EINVAL;
 568                 goto error;
 569         }
 570
 571         priv = pn53x_common_init(id->driver_info, protocol_type,
 572                                         phy, &usb_phy_ops, fops,
 573                                         &phy->udev->dev);
 574
 575         if (IS_ERR(priv)) {
 576                 rc = PTR_ERR(priv);
 577                 goto error;
 578         }
 579
 580         phy->priv = priv;
 581
 582         rc = pn533_finalize_setup(priv);
 583         if (rc)
 584                 goto err_clean;
 585
 586         usb_set_intfdata(interface, phy);
 587         rc = pn53x_register_nfc(priv, protocols, &interface->dev);
 588         if (rc)
 589                 goto err_clean;
 590
 591         return 0;
 592
 593 err_clean:
 594         pn53x_common_clean(priv);
 595 error:
 596         usb_kill_urb(phy->in_urb);
 597         usb_kill_urb(phy->out_urb);
 598         usb_kill_urb(phy->ack_urb);
 599
 600         usb_free_urb(phy->in_urb);
 601         usb_free_urb(phy->out_urb);
 602         usb_free_urb(phy->ack_urb);
 603         usb_put_dev(phy->udev);
 604         kfree(in_buf);
 605         kfree(phy->ack_buffer);
 606
 607         return rc;
 608 }
 609
 610 static void pn533_usb_disconnect(struct usb_interface *interface)
 611 {
 612         struct pn533_usb_phy *phy = usb_get_intfdata(interface);
 613
 614         if (!phy)
 615                 return;
 616
 617         pn53x_unregister_nfc(phy->priv);
 618         pn53x_common_clean(phy->priv);
 619
 620         usb_set_intfdata(interface, NULL);
 621
 622         usb_kill_urb(phy->in_urb);
 623         usb_kill_urb(phy->out_urb);
 624         usb_kill_urb(phy->ack_urb);
 625
 626         kfree(phy->in_urb->transfer_buffer);
 627         usb_free_urb(phy->in_urb);
 628         usb_free_urb(phy->out_urb);
 629         usb_free_urb(phy->ack_urb);
 630         kfree(phy->ack_buffer);
 631
 632         nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n");
 633 }
 634
 635 static struct usb_driver pn533_usb_driver = {
 636         .name =         "pn533_usb",
 637         .probe =        pn533_usb_probe,
 638         .disconnect =   pn533_usb_disconnect,
 639         .id_table =     pn533_usb_table,
 640 };
 641
 642 module_usb_driver(pn533_usb_driver);
 643
 644 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
 645 MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
 646 MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
 647 MODULE_DESCRIPTION("PN533 USB driver ver " VERSION);
 648 MODULE_VERSION(VERSION);
 649 MODULE_LICENSE("GPL");