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         u8 data[]; /* payload */
 258 } __packed;
 259
 260 struct pn533_acr122_apdu_hdr {
 261         u8 class;
 262         u8 ins;
 263         u8 p1;
 264         u8 p2;
 265 } __packed;
 266
 267 struct pn533_acr122_tx_frame {
 268         struct pn533_acr122_ccid_hdr ccid;
 269         struct pn533_acr122_apdu_hdr apdu;
 270         u8 datalen;
 271         u8 data[]; /* pn533 frame: TFI ... */
 272 } __packed;
 273
 274 struct pn533_acr122_rx_frame {
 275         struct pn533_acr122_ccid_hdr ccid;
 276         u8 data[]; /* pn533 frame : TFI ... */
 277 } __packed;
 278
 279 static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code)
 280 {
 281         struct pn533_acr122_tx_frame *frame = _frame;
 282
 283         frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE;
 284         /* sizeof(apdu_hdr) + sizeof(datalen) */
 285         frame->ccid.datalen = sizeof(frame->apdu) + 1;
 286         frame->ccid.slot = 0;
 287         frame->ccid.seq = 0;
 288         frame->ccid.params[0] = 0;
 289         frame->ccid.params[1] = 0;
 290         frame->ccid.params[2] = 0;
 291
 292         frame->data[0] = PN533_STD_FRAME_DIR_OUT;
 293         frame->data[1] = cmd_code;
 294         frame->datalen = 2;  /* data[0] + data[1] */
 295
 296         frame->apdu.class = 0xFF;
 297         frame->apdu.ins = 0;
 298         frame->apdu.p1 = 0;
 299         frame->apdu.p2 = 0;
 300 }
 301
 302 static void pn533_acr122_tx_frame_finish(void *_frame)
 303 {
 304         struct pn533_acr122_tx_frame *frame = _frame;
 305
 306         frame->ccid.datalen += frame->datalen;
 307 }
 308
 309 static void pn533_acr122_tx_update_payload_len(void *_frame, int len)
 310 {
 311         struct pn533_acr122_tx_frame *frame = _frame;
 312
 313         frame->datalen += len;
 314 }
 315
 316 static bool pn533_acr122_is_rx_frame_valid(void *_frame, struct pn533 *dev)
 317 {
 318         struct pn533_acr122_rx_frame *frame = _frame;
 319
 320         if (frame->ccid.type != 0x83)
 321                 return false;
 322
 323         if (!frame->ccid.datalen)
 324                 return false;
 325
 326         if (frame->data[frame->ccid.datalen - 2] == 0x63)
 327                 return false;
 328
 329         return true;
 330 }
 331
 332 static int pn533_acr122_rx_frame_size(void *frame)
 333 {
 334         struct pn533_acr122_rx_frame *f = frame;
 335
 336         /* f->ccid.datalen already includes tail length */
 337         return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen;
 338 }
 339
 340 static u8 pn533_acr122_get_cmd_code(void *frame)
 341 {
 342         struct pn533_acr122_rx_frame *f = frame;
 343
 344         return PN533_FRAME_CMD(f);
 345 }
 346
 347 static struct pn533_frame_ops pn533_acr122_frame_ops = {
 348         .tx_frame_init = pn533_acr122_tx_frame_init,
 349         .tx_frame_finish = pn533_acr122_tx_frame_finish,
 350         .tx_update_payload_len = pn533_acr122_tx_update_payload_len,
 351         .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN,
 352         .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN,
 353
 354         .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid,
 355         .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN,
 356         .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN,
 357         .rx_frame_size = pn533_acr122_rx_frame_size,
 358
 359         .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN,
 360         .get_cmd_code = pn533_acr122_get_cmd_code,
 361 };
 362
 363 struct pn533_acr122_poweron_rdr_arg {
 364         int rc;
 365         struct completion done;
 366 };
 367
 368 static void pn533_acr122_poweron_rdr_resp(struct urb *urb)
 369 {
 370         struct pn533_acr122_poweron_rdr_arg *arg = urb->context;
 371
 372         print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1,
 373                        urb->transfer_buffer, urb->transfer_buffer_length,
 374                        false);
 375
 376         arg->rc = urb->status;
 377         complete(&arg->done);
 378 }
 379
 380 static int pn533_acr122_poweron_rdr(struct pn533_usb_phy *phy)
 381 {
 382         /* Power on th reader (CCID cmd) */
 383         u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON,
 384                       0, 0, 0, 0, 0, 0, 3, 0, 0};
 385         char *buffer;
 386         int transferred;
 387         int rc;
 388         void *cntx;
 389         struct pn533_acr122_poweron_rdr_arg arg;
 390
 391         buffer = kmemdup(cmd, sizeof(cmd), GFP_KERNEL);
 392         if (!buffer)
 393                 return -ENOMEM;
 394
 395         init_completion(&arg.done);
 396         cntx = phy->in_urb->context;  /* backup context */
 397
 398         phy->in_urb->complete = pn533_acr122_poweron_rdr_resp;
 399         phy->in_urb->context = &arg;
 400
 401         print_hex_dump_debug("ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1,
 402                        cmd, sizeof(cmd), false);
 403
 404         rc = usb_bulk_msg(phy->udev, phy->out_urb->pipe, buffer, sizeof(cmd),
 405                           &transferred, 5000);
 406         kfree(buffer);
 407         if (rc || (transferred != sizeof(cmd))) {
 408                 nfc_err(&phy->udev->dev,
 409                         "Reader power on cmd error %d\n", rc);
 410                 return rc;
 411         }
 412
 413         rc =  usb_submit_urb(phy->in_urb, GFP_KERNEL);
 414         if (rc) {
 415                 nfc_err(&phy->udev->dev,
 416                         "Can't submit reader poweron cmd response %d\n", rc);
 417                 return rc;
 418         }
 419
 420         wait_for_completion(&arg.done);
 421         phy->in_urb->context = cntx; /* restore context */
 422
 423         return arg.rc;
 424 }
 425
 426 static void pn533_out_complete(struct urb *urb)
 427 {
 428         struct pn533_out_arg *arg = urb->context;
 429         struct pn533_usb_phy *phy = arg->phy;
 430
 431         switch (urb->status) {
 432         case 0:
 433                 break; /* success */
 434         case -ECONNRESET:
 435         case -ENOENT:
 436                 dev_dbg(&phy->udev->dev,
 437                         "The urb has been stopped (status %d)\n",
 438                         urb->status);
 439                 break;
 440         case -ESHUTDOWN:
 441         default:
 442                 nfc_err(&phy->udev->dev,
 443                         "Urb failure (status %d)\n",
 444                         urb->status);
 445         }
 446
 447         complete(&arg->done);
 448 }
 449
 450 static void pn533_ack_complete(struct urb *urb)
 451 {
 452         struct pn533_usb_phy *phy = urb->context;
 453
 454         switch (urb->status) {
 455         case 0:
 456                 break; /* success */
 457         case -ECONNRESET:
 458         case -ENOENT:
 459                 dev_dbg(&phy->udev->dev,
 460                         "The urb has been stopped (status %d)\n",
 461                         urb->status);
 462                 break;
 463         case -ESHUTDOWN:
 464         default:
 465                 nfc_err(&phy->udev->dev,
 466                         "Urb failure (status %d)\n",
 467                         urb->status);
 468         }
 469 }
 470
 471 static const struct pn533_phy_ops usb_phy_ops = {
 472         .send_frame = pn533_usb_send_frame,
 473         .send_ack = pn533_usb_send_ack,
 474         .abort_cmd = pn533_usb_abort_cmd,
 475 };
 476
 477 static int pn533_usb_probe(struct usb_interface *interface,
 478                         const struct usb_device_id *id)
 479 {
 480         struct pn533 *priv;
 481         struct pn533_usb_phy *phy;
 482         struct usb_host_interface *iface_desc;
 483         struct usb_endpoint_descriptor *endpoint;
 484         int in_endpoint = 0;
 485         int out_endpoint = 0;
 486         int rc = -ENOMEM;
 487         int i;
 488         u32 protocols;
 489         enum pn533_protocol_type protocol_type = PN533_PROTO_REQ_ACK_RESP;
 490         struct pn533_frame_ops *fops = NULL;
 491         unsigned char *in_buf;
 492         int in_buf_len = PN533_EXT_FRAME_HEADER_LEN +
 493                          PN533_STD_FRAME_MAX_PAYLOAD_LEN +
 494                          PN533_STD_FRAME_TAIL_LEN;
 495
 496         phy = devm_kzalloc(&interface->dev, sizeof(*phy), GFP_KERNEL);
 497         if (!phy)
 498                 return -ENOMEM;
 499
 500         in_buf = kzalloc(in_buf_len, GFP_KERNEL);
 501         if (!in_buf)
 502                 return -ENOMEM;
 503
 504         phy->udev = usb_get_dev(interface_to_usbdev(interface));
 505         phy->interface = interface;
 506
 507         iface_desc = interface->cur_altsetting;
 508         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 509                 endpoint = &iface_desc->endpoint[i].desc;
 510
 511                 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
 512                         in_endpoint = endpoint->bEndpointAddress;
 513
 514                 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
 515                         out_endpoint = endpoint->bEndpointAddress;
 516         }
 517
 518         if (!in_endpoint || !out_endpoint) {
 519                 nfc_err(&interface->dev,
 520                         "Could not find bulk-in or bulk-out endpoint\n");
 521                 rc = -ENODEV;
 522                 goto error;
 523         }
 524
 525         phy->in_urb = usb_alloc_urb(0, GFP_KERNEL);
 526         phy->out_urb = usb_alloc_urb(0, GFP_KERNEL);
 527         phy->ack_urb = usb_alloc_urb(0, GFP_KERNEL);
 528
 529         if (!phy->in_urb || !phy->out_urb || !phy->ack_urb)
 530                 goto error;
 531
 532         usb_fill_bulk_urb(phy->in_urb, phy->udev,
 533                           usb_rcvbulkpipe(phy->udev, in_endpoint),
 534                           in_buf, in_buf_len, NULL, phy);
 535
 536         usb_fill_bulk_urb(phy->out_urb, phy->udev,
 537                           usb_sndbulkpipe(phy->udev, out_endpoint),
 538                           NULL, 0, pn533_out_complete, phy);
 539         usb_fill_bulk_urb(phy->ack_urb, phy->udev,
 540                           usb_sndbulkpipe(phy->udev, out_endpoint),
 541                           NULL, 0, pn533_ack_complete, phy);
 542
 543         switch (id->driver_info) {
 544         case PN533_DEVICE_STD:
 545                 protocols = PN533_ALL_PROTOCOLS;
 546                 break;
 547
 548         case PN533_DEVICE_PASORI:
 549                 protocols = PN533_NO_TYPE_B_PROTOCOLS;
 550                 break;
 551
 552         case PN533_DEVICE_ACR122U:
 553                 protocols = PN533_NO_TYPE_B_PROTOCOLS;
 554                 fops = &pn533_acr122_frame_ops;
 555                 protocol_type = PN533_PROTO_REQ_RESP;
 556
 557                 rc = pn533_acr122_poweron_rdr(phy);
 558                 if (rc < 0) {
 559                         nfc_err(&interface->dev,
 560                                 "Couldn't poweron the reader (error %d)\n", rc);
 561                         goto error;
 562                 }
 563                 break;
 564
 565         default:
 566                 nfc_err(&interface->dev, "Unknown device type %lu\n",
 567                         id->driver_info);
 568                 rc = -EINVAL;
 569                 goto error;
 570         }
 571
 572         priv = pn53x_common_init(id->driver_info, protocol_type,
 573                                         phy, &usb_phy_ops, fops,
 574                                         &phy->udev->dev);
 575
 576         if (IS_ERR(priv)) {
 577                 rc = PTR_ERR(priv);
 578                 goto error;
 579         }
 580
 581         phy->priv = priv;
 582
 583         rc = pn533_finalize_setup(priv);
 584         if (rc)
 585                 goto err_clean;
 586
 587         usb_set_intfdata(interface, phy);
 588         rc = pn53x_register_nfc(priv, protocols, &interface->dev);
 589         if (rc)
 590                 goto err_clean;
 591
 592         return 0;
 593
 594 err_clean:
 595         pn53x_common_clean(priv);
 596 error:
 597         usb_kill_urb(phy->in_urb);
 598         usb_kill_urb(phy->out_urb);
 599         usb_kill_urb(phy->ack_urb);
 600
 601         usb_free_urb(phy->in_urb);
 602         usb_free_urb(phy->out_urb);
 603         usb_free_urb(phy->ack_urb);
 604         usb_put_dev(phy->udev);
 605         kfree(in_buf);
 606         kfree(phy->ack_buffer);
 607
 608         return rc;
 609 }
 610
 611 static void pn533_usb_disconnect(struct usb_interface *interface)
 612 {
 613         struct pn533_usb_phy *phy = usb_get_intfdata(interface);
 614
 615         if (!phy)
 616                 return;
 617
 618         pn53x_unregister_nfc(phy->priv);
 619         pn53x_common_clean(phy->priv);
 620
 621         usb_set_intfdata(interface, NULL);
 622
 623         usb_kill_urb(phy->in_urb);
 624         usb_kill_urb(phy->out_urb);
 625         usb_kill_urb(phy->ack_urb);
 626
 627         kfree(phy->in_urb->transfer_buffer);
 628         usb_free_urb(phy->in_urb);
 629         usb_free_urb(phy->out_urb);
 630         usb_free_urb(phy->ack_urb);
 631         kfree(phy->ack_buffer);
 632
 633         nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n");
 634 }
 635
 636 static struct usb_driver pn533_usb_driver = {
 637         .name =         "pn533_usb",
 638         .probe =        pn533_usb_probe,
 639         .disconnect =   pn533_usb_disconnect,
 640         .id_table =     pn533_usb_table,
 641 };
 642
 643 module_usb_driver(pn533_usb_driver);
 644
 645 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
 646 MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
 647 MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
 648 MODULE_DESCRIPTION("PN533 USB driver ver " VERSION);
 649 MODULE_VERSION(VERSION);
 650 MODULE_LICENSE("GPL");