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