drivers/usb/serial/visor.c

   1 /*
   2  * USB HandSpring Visor, Palm m50x, and Sony Clie driver
   3  * (supports all of the Palm OS USB devices)
   4  *
   5  *      Copyright (C) 1999 - 2004
   6  *          Greg Kroah-Hartman (greg@kroah.com)
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License version
  10  *      2 as published by the Free Software Foundation.
  11  *
  12  * See Documentation/usb/usb-serial.txt for more information on using this
  13  * driver
  14  *
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/errno.h>
  19 #include <linux/slab.h>
  20 #include <linux/tty.h>
  21 #include <linux/tty_driver.h>
  22 #include <linux/tty_flip.h>
  23 #include <linux/module.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/spinlock.h>
  26 #include <linux/uaccess.h>
  27 #include <linux/usb.h>
  28 #include <linux/usb/serial.h>
  29 #include <linux/usb/cdc.h>
  30 #include "visor.h"
  31
  32 /*
  33  * Version Information
  34  */
  35 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
  36 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
  37
  38 /* function prototypes for a handspring visor */
  39 static int  visor_open(struct tty_struct *tty, struct usb_serial_port *port);
  40 static void visor_close(struct usb_serial_port *port);
  41 static int  visor_probe(struct usb_serial *serial,
  42                                         const struct usb_device_id *id);
  43 static int  visor_calc_num_ports(struct usb_serial *serial);
  44 static void visor_read_int_callback(struct urb *urb);
  45 static int  clie_3_5_startup(struct usb_serial *serial);
  46 static int  treo_attach(struct usb_serial *serial);
  47 static int clie_5_attach(struct usb_serial *serial);
  48 static int palm_os_3_probe(struct usb_serial *serial,
  49                                         const struct usb_device_id *id);
  50 static int palm_os_4_probe(struct usb_serial *serial,
  51                                         const struct usb_device_id *id);
  52
  53 static const struct usb_device_id id_table[] = {
  54         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
  55                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
  56         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
  57                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  58         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
  59                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  60         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
  61                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  62         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
  63                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  64         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
  65                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  66         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
  67                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  68         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
  69                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  70         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
  71                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  72         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
  73                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  74         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
  75                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  76         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
  77                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  78         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
  79                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  80         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
  81                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  82         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
  83                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  84         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
  85                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  86         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
  87                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  88         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
  89                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  90         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
  91                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  92         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
  93                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  94         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
  95                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  96         { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
  97                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  98         { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
  99                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 100         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
 101                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 102         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
 103                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 104         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 105                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 106         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 107                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 108         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 109                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 110         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 111                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 112         { }                                     /* Terminating entry */
 113 };
 114
 115 static const struct usb_device_id clie_id_5_table[] = {
 116         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 117                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 118         { }                                     /* Terminating entry */
 119 };
 120
 121 static const struct usb_device_id clie_id_3_5_table[] = {
 122         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 123         { }                                     /* Terminating entry */
 124 };
 125
 126 static const struct usb_device_id id_table_combined[] = {
 127         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 128         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 129         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 130         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
 131         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 132         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 133         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 134         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 135         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 136         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 137         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 138         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 139         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 140         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 141         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 142         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 143         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 144         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 145         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 146         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 147         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 148         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 149         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 150         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 151         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 152         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
 153         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 154         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 155         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 156         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 157         { }                                     /* Terminating entry */
 158 };
 159
 160 MODULE_DEVICE_TABLE(usb, id_table_combined);
 161
 162 /* All of the device info needed for the Handspring Visor,
 163    and Palm 4.0 devices */
 164 static struct usb_serial_driver handspring_device = {
 165         .driver = {
 166                 .owner =        THIS_MODULE,
 167                 .name =         "visor",
 168         },
 169         .description =          "Handspring Visor / Palm OS",
 170         .id_table =             id_table,
 171         .num_ports =            2,
 172         .bulk_out_size =        256,
 173         .open =                 visor_open,
 174         .close =                visor_close,
 175         .throttle =             usb_serial_generic_throttle,
 176         .unthrottle =           usb_serial_generic_unthrottle,
 177         .attach =               treo_attach,
 178         .probe =                visor_probe,
 179         .calc_num_ports =       visor_calc_num_ports,
 180         .read_int_callback =    visor_read_int_callback,
 181 };
 182
 183 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 184 static struct usb_serial_driver clie_5_device = {
 185         .driver = {
 186                 .owner =        THIS_MODULE,
 187                 .name =         "clie_5",
 188         },
 189         .description =          "Sony Clie 5.0",
 190         .id_table =             clie_id_5_table,
 191         .num_ports =            2,
 192         .bulk_out_size =        256,
 193         .open =                 visor_open,
 194         .close =                visor_close,
 195         .throttle =             usb_serial_generic_throttle,
 196         .unthrottle =           usb_serial_generic_unthrottle,
 197         .attach =               clie_5_attach,
 198         .probe =                visor_probe,
 199         .calc_num_ports =       visor_calc_num_ports,
 200         .read_int_callback =    visor_read_int_callback,
 201 };
 202
 203 /* device info for the Sony Clie OS version 3.5 */
 204 static struct usb_serial_driver clie_3_5_device = {
 205         .driver = {
 206                 .owner =        THIS_MODULE,
 207                 .name =         "clie_3.5",
 208         },
 209         .description =          "Sony Clie 3.5",
 210         .id_table =             clie_id_3_5_table,
 211         .num_ports =            1,
 212         .bulk_out_size =        256,
 213         .open =                 visor_open,
 214         .close =                visor_close,
 215         .throttle =             usb_serial_generic_throttle,
 216         .unthrottle =           usb_serial_generic_unthrottle,
 217         .attach =               clie_3_5_startup,
 218 };
 219
 220 static struct usb_serial_driver * const serial_drivers[] = {
 221         &handspring_device, &clie_5_device, &clie_3_5_device, NULL
 222 };
 223
 224 /******************************************************************************
 225  * Handspring Visor specific driver functions
 226  ******************************************************************************/
 227 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
 228 {
 229         int result = 0;
 230
 231         if (!port->read_urb) {
 232                 /* this is needed for some brain dead Sony devices */
 233                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 234                 return -ENODEV;
 235         }
 236
 237         /* Start reading from the device */
 238         result = usb_serial_generic_open(tty, port);
 239         if (result)
 240                 goto exit;
 241
 242         if (port->interrupt_in_urb) {
 243                 dev_dbg(&port->dev, "adding interrupt input for treo\n");
 244                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 245                 if (result)
 246                         dev_err(&port->dev,
 247                             "%s - failed submitting interrupt urb, error %d\n",
 248                                                         __func__, result);
 249         }
 250 exit:
 251         return result;
 252 }
 253
 254
 255 static void visor_close(struct usb_serial_port *port)
 256 {
 257         unsigned char *transfer_buffer;
 258
 259         usb_serial_generic_close(port);
 260         usb_kill_urb(port->interrupt_in_urb);
 261
 262         transfer_buffer = kmalloc(0x12, GFP_KERNEL);
 263         if (!transfer_buffer)
 264                 return;
 265         usb_control_msg(port->serial->dev,
 266                                          usb_rcvctrlpipe(port->serial->dev, 0),
 267                                          VISOR_CLOSE_NOTIFICATION, 0xc2,
 268                                          0x0000, 0x0000,
 269                                          transfer_buffer, 0x12, 300);
 270         kfree(transfer_buffer);
 271 }
 272
 273 static void visor_read_int_callback(struct urb *urb)
 274 {
 275         struct usb_serial_port *port = urb->context;
 276         int status = urb->status;
 277         int result;
 278
 279         switch (status) {
 280         case 0:
 281                 /* success */
 282                 break;
 283         case -ECONNRESET:
 284         case -ENOENT:
 285         case -ESHUTDOWN:
 286                 /* this urb is terminated, clean up */
 287                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 288                         __func__, status);
 289                 return;
 290         default:
 291                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 292                         __func__, status);
 293                 goto exit;
 294         }
 295
 296         /*
 297          * This information is still unknown what it can be used for.
 298          * If anyone has an idea, please let the author know...
 299          *
 300          * Rumor has it this endpoint is used to notify when data
 301          * is ready to be read from the bulk ones.
 302          */
 303         usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 304                               urb->transfer_buffer);
 305
 306 exit:
 307         result = usb_submit_urb(urb, GFP_ATOMIC);
 308         if (result)
 309                 dev_err(&urb->dev->dev,
 310                                 "%s - Error %d submitting interrupt urb\n",
 311                                                         __func__, result);
 312 }
 313
 314 static int palm_os_3_probe(struct usb_serial *serial,
 315                                                 const struct usb_device_id *id)
 316 {
 317         struct device *dev = &serial->dev->dev;
 318         struct visor_connection_info *connection_info;
 319         unsigned char *transfer_buffer;
 320         char *string;
 321         int retval = 0;
 322         int i;
 323         int num_ports = 0;
 324
 325         transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 326         if (!transfer_buffer)
 327                 return -ENOMEM;
 328
 329         /* send a get connection info request */
 330         retval = usb_control_msg(serial->dev,
 331                                   usb_rcvctrlpipe(serial->dev, 0),
 332                                   VISOR_GET_CONNECTION_INFORMATION,
 333                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 334                                   sizeof(*connection_info), 300);
 335         if (retval < 0) {
 336                 dev_err(dev, "%s - error %d getting connection information\n",
 337                         __func__, retval);
 338                 goto exit;
 339         }
 340
 341         if (retval != sizeof(*connection_info)) {
 342                 dev_err(dev, "Invalid connection information received from device\n");
 343                 retval = -ENODEV;
 344                 goto exit;
 345         }
 346
 347         connection_info = (struct visor_connection_info *)transfer_buffer;
 348
 349         num_ports = le16_to_cpu(connection_info->num_ports);
 350
 351         /* Handle devices that report invalid stuff here. */
 352         if (num_ports == 0 || num_ports > 2) {
 353                 dev_warn(dev, "%s: No valid connect info available\n",
 354                         serial->type->description);
 355                 num_ports = 2;
 356         }
 357
 358         for (i = 0; i < num_ports; ++i) {
 359                 switch (connection_info->connections[i].port_function_id) {
 360                 case VISOR_FUNCTION_GENERIC:
 361                         string = "Generic";
 362                         break;
 363                 case VISOR_FUNCTION_DEBUGGER:
 364                         string = "Debugger";
 365                         break;
 366                 case VISOR_FUNCTION_HOTSYNC:
 367                         string = "HotSync";
 368                         break;
 369                 case VISOR_FUNCTION_CONSOLE:
 370                         string = "Console";
 371                         break;
 372                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 373                         string = "Remote File System";
 374                         break;
 375                 default:
 376                         string = "unknown";
 377                         break;
 378                 }
 379                 dev_info(dev, "%s: port %d, is for %s use\n",
 380                         serial->type->description,
 381                         connection_info->connections[i].port, string);
 382         }
 383         dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
 384                 num_ports);
 385
 386         /*
 387          * save off our num_ports info so that we can use it in the
 388          * calc_num_ports callback
 389          */
 390         usb_set_serial_data(serial, (void *)(long)num_ports);
 391
 392         /* ask for the number of bytes available, but ignore the
 393            response as it is broken */
 394         retval = usb_control_msg(serial->dev,
 395                                   usb_rcvctrlpipe(serial->dev, 0),
 396                                   VISOR_REQUEST_BYTES_AVAILABLE,
 397                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 398                                   0x02, 300);
 399         if (retval < 0)
 400                 dev_err(dev, "%s - error %d getting bytes available request\n",
 401                         __func__, retval);
 402         retval = 0;
 403
 404 exit:
 405         kfree(transfer_buffer);
 406
 407         return retval;
 408 }
 409
 410 static int palm_os_4_probe(struct usb_serial *serial,
 411                                                 const struct usb_device_id *id)
 412 {
 413         struct device *dev = &serial->dev->dev;
 414         struct palm_ext_connection_info *connection_info;
 415         unsigned char *transfer_buffer;
 416         int retval;
 417
 418         transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
 419         if (!transfer_buffer)
 420                 return -ENOMEM;
 421
 422         retval = usb_control_msg(serial->dev,
 423                                   usb_rcvctrlpipe(serial->dev, 0),
 424                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 425                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 426                                   sizeof(*connection_info), 300);
 427         if (retval < 0)
 428                 dev_err(dev, "%s - error %d getting connection info\n",
 429                         __func__, retval);
 430         else
 431                 usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
 432
 433         kfree(transfer_buffer);
 434         return 0;
 435 }
 436
 437
 438 static int visor_probe(struct usb_serial *serial,
 439                                         const struct usb_device_id *id)
 440 {
 441         int retval = 0;
 442         int (*startup)(struct usb_serial *serial,
 443                                         const struct usb_device_id *id);
 444
 445         /*
 446          * some Samsung Android phones in modem mode have the same ID
 447          * as SPH-I500, but they are ACM devices, so dont bind to them
 448          */
 449         if (id->idVendor == SAMSUNG_VENDOR_ID &&
 450                 id->idProduct == SAMSUNG_SPH_I500_ID &&
 451                 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
 452                 serial->dev->descriptor.bDeviceSubClass ==
 453                         USB_CDC_SUBCLASS_ACM)
 454                 return -ENODEV;
 455
 456         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 457                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 458                         serial->dev->actconfig->desc.bConfigurationValue);
 459                 return -ENODEV;
 460         }
 461
 462         if (id->driver_info) {
 463                 startup = (void *)id->driver_info;
 464                 retval = startup(serial, id);
 465         }
 466
 467         return retval;
 468 }
 469
 470 static int visor_calc_num_ports(struct usb_serial *serial)
 471 {
 472         int num_ports = (int)(long)(usb_get_serial_data(serial));
 473
 474         if (num_ports)
 475                 usb_set_serial_data(serial, NULL);
 476
 477         return num_ports;
 478 }
 479
 480 static int clie_3_5_startup(struct usb_serial *serial)
 481 {
 482         struct device *dev = &serial->dev->dev;
 483         int result;
 484         u8 *data;
 485
 486         data = kmalloc(1, GFP_KERNEL);
 487         if (!data)
 488                 return -ENOMEM;
 489
 490         /*
 491          * Note that PEG-300 series devices expect the following two calls.
 492          */
 493
 494         /* get the config number */
 495         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 496                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 497                                   0, 0, data, 1, 3000);
 498         if (result < 0) {
 499                 dev_err(dev, "%s: get config number failed: %d\n",
 500                                                         __func__, result);
 501                 goto out;
 502         }
 503         if (result != 1) {
 504                 dev_err(dev, "%s: get config number bad return length: %d\n",
 505                                                         __func__, result);
 506                 result = -EIO;
 507                 goto out;
 508         }
 509
 510         /* get the interface number */
 511         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 512                                   USB_REQ_GET_INTERFACE,
 513                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 514                                   0, 0, data, 1, 3000);
 515         if (result < 0) {
 516                 dev_err(dev, "%s: get interface number failed: %d\n",
 517                                                         __func__, result);
 518                 goto out;
 519         }
 520         if (result != 1) {
 521                 dev_err(dev,
 522                         "%s: get interface number bad return length: %d\n",
 523                                                         __func__, result);
 524                 result = -EIO;
 525                 goto out;
 526         }
 527
 528         result = 0;
 529 out:
 530         kfree(data);
 531
 532         return result;
 533 }
 534
 535 static int treo_attach(struct usb_serial *serial)
 536 {
 537         struct usb_serial_port *swap_port;
 538
 539         /* Only do this endpoint hack for the Handspring devices with
 540          * interrupt in endpoints, which for now are the Treo devices. */
 541         if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
 542                                                 == HANDSPRING_VENDOR_ID) ||
 543                 (le16_to_cpu(serial->dev->descriptor.idVendor)
 544                                                 == KYOCERA_VENDOR_ID)) ||
 545                 (serial->num_interrupt_in == 0))
 546                 return 0;
 547
 548         if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) {
 549                 dev_err(&serial->interface->dev, "missing endpoints\n");
 550                 return -ENODEV;
 551         }
 552
 553         /*
 554         * It appears that Treos and Kyoceras want to use the
 555         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 556         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 557         * Note that swapping the bulk out endpoints would break lots of
 558         * apps that want to communicate on the second port.
 559         */
 560 #define COPY_PORT(dest, src)                                            \
 561         do { \
 562                 int i;                                                  \
 563                                                                         \
 564                 for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) {      \
 565                         dest->read_urbs[i] = src->read_urbs[i];         \
 566                         dest->read_urbs[i]->context = dest;             \
 567                         dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \
 568                 }                                                       \
 569                 dest->read_urb = src->read_urb;                         \
 570                 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
 571                 dest->bulk_in_buffer = src->bulk_in_buffer;             \
 572                 dest->bulk_in_size = src->bulk_in_size;                 \
 573                 dest->interrupt_in_urb = src->interrupt_in_urb;         \
 574                 dest->interrupt_in_urb->context = dest;                 \
 575                 dest->interrupt_in_endpointAddress = \
 576                                         src->interrupt_in_endpointAddress;\
 577                 dest->interrupt_in_buffer = src->interrupt_in_buffer;   \
 578         } while (0);
 579
 580         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 581         if (!swap_port)
 582                 return -ENOMEM;
 583         COPY_PORT(swap_port, serial->port[0]);
 584         COPY_PORT(serial->port[0], serial->port[1]);
 585         COPY_PORT(serial->port[1], swap_port);
 586         kfree(swap_port);
 587
 588         return 0;
 589 }
 590
 591 static int clie_5_attach(struct usb_serial *serial)
 592 {
 593         struct usb_serial_port *port;
 594         unsigned int pipe;
 595         int j;
 596
 597         /* TH55 registers 2 ports.
 598            Communication in from the UX50/TH55 uses bulk_in_endpointAddress
 599            from port 0. Communication out to the UX50/TH55 uses
 600            bulk_out_endpointAddress from port 1
 601
 602            Lets do a quick and dirty mapping
 603          */
 604
 605         /* some sanity check */
 606         if (serial->num_bulk_out < 2) {
 607                 dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
 608                 return -ENODEV;
 609         }
 610
 611         /* port 0 now uses the modified endpoint Address */
 612         port = serial->port[0];
 613         port->bulk_out_endpointAddress =
 614                                 serial->port[1]->bulk_out_endpointAddress;
 615
 616         pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress);
 617         for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j)
 618                 port->write_urbs[j]->pipe = pipe;
 619
 620         return 0;
 621 }
 622
 623 module_usb_serial_driver(serial_drivers, id_table_combined);
 624
 625 MODULE_AUTHOR(DRIVER_AUTHOR);
 626 MODULE_DESCRIPTION(DRIVER_DESC);
 627 MODULE_LICENSE("GPL");