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 static struct usb_driver visor_driver = {
 167         .name =         "visor",
 168         .disconnect =   usb_serial_disconnect,
 169         .id_table =     id_table_combined,
 170 };
 171
 172 /* All of the device info needed for the Handspring Visor,
 173    and Palm 4.0 devices */
 174 static struct usb_serial_driver handspring_device = {
 175         .driver = {
 176                 .owner =        THIS_MODULE,
 177                 .name =         "visor",
 178         },
 179         .description =          "Handspring Visor / Palm OS",
 180         .id_table =             id_table,
 181         .num_ports =            2,
 182         .bulk_out_size =        256,
 183         .open =                 visor_open,
 184         .close =                visor_close,
 185         .throttle =             usb_serial_generic_throttle,
 186         .unthrottle =           usb_serial_generic_unthrottle,
 187         .attach =               treo_attach,
 188         .probe =                visor_probe,
 189         .calc_num_ports =       visor_calc_num_ports,
 190         .read_int_callback =    visor_read_int_callback,
 191 };
 192
 193 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 194 static struct usb_serial_driver clie_5_device = {
 195         .driver = {
 196                 .owner =        THIS_MODULE,
 197                 .name =         "clie_5",
 198         },
 199         .description =          "Sony Clie 5.0",
 200         .id_table =             clie_id_5_table,
 201         .num_ports =            2,
 202         .bulk_out_size =        256,
 203         .open =                 visor_open,
 204         .close =                visor_close,
 205         .throttle =             usb_serial_generic_throttle,
 206         .unthrottle =           usb_serial_generic_unthrottle,
 207         .attach =               clie_5_attach,
 208         .probe =                visor_probe,
 209         .calc_num_ports =       visor_calc_num_ports,
 210         .read_int_callback =    visor_read_int_callback,
 211 };
 212
 213 /* device info for the Sony Clie OS version 3.5 */
 214 static struct usb_serial_driver clie_3_5_device = {
 215         .driver = {
 216                 .owner =        THIS_MODULE,
 217                 .name =         "clie_3.5",
 218         },
 219         .description =          "Sony Clie 3.5",
 220         .id_table =             clie_id_3_5_table,
 221         .num_ports =            1,
 222         .bulk_out_size =        256,
 223         .open =                 visor_open,
 224         .close =                visor_close,
 225         .throttle =             usb_serial_generic_throttle,
 226         .unthrottle =           usb_serial_generic_unthrottle,
 227         .attach =               clie_3_5_startup,
 228 };
 229
 230 static struct usb_serial_driver * const serial_drivers[] = {
 231         &handspring_device, &clie_5_device, &clie_3_5_device, NULL
 232 };
 233
 234 /******************************************************************************
 235  * Handspring Visor specific driver functions
 236  ******************************************************************************/
 237 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
 238 {
 239         int result = 0;
 240
 241         if (!port->read_urb) {
 242                 /* this is needed for some brain dead Sony devices */
 243                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 244                 return -ENODEV;
 245         }
 246
 247         /* Start reading from the device */
 248         result = usb_serial_generic_open(tty, port);
 249         if (result)
 250                 goto exit;
 251
 252         if (port->interrupt_in_urb) {
 253                 dev_dbg(&port->dev, "adding interrupt input for treo\n");
 254                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 255                 if (result)
 256                         dev_err(&port->dev,
 257                             "%s - failed submitting interrupt urb, error %d\n",
 258                                                         __func__, result);
 259         }
 260 exit:
 261         return result;
 262 }
 263
 264
 265 static void visor_close(struct usb_serial_port *port)
 266 {
 267         unsigned char *transfer_buffer;
 268
 269         /* shutdown our urbs */
 270         usb_serial_generic_close(port);
 271         usb_kill_urb(port->interrupt_in_urb);
 272
 273         mutex_lock(&port->serial->disc_mutex);
 274         if (!port->serial->disconnected) {
 275                 /* Try to send shutdown message, unless the device is gone */
 276                 transfer_buffer =  kmalloc(0x12, GFP_KERNEL);
 277                 if (transfer_buffer) {
 278                         usb_control_msg(port->serial->dev,
 279                                          usb_rcvctrlpipe(port->serial->dev, 0),
 280                                          VISOR_CLOSE_NOTIFICATION, 0xc2,
 281                                          0x0000, 0x0000,
 282                                          transfer_buffer, 0x12, 300);
 283                         kfree(transfer_buffer);
 284                 }
 285         }
 286         mutex_unlock(&port->serial->disc_mutex);
 287 }
 288
 289 static void visor_read_int_callback(struct urb *urb)
 290 {
 291         struct usb_serial_port *port = urb->context;
 292         int status = urb->status;
 293         int result;
 294
 295         switch (status) {
 296         case 0:
 297                 /* success */
 298                 break;
 299         case -ECONNRESET:
 300         case -ENOENT:
 301         case -ESHUTDOWN:
 302                 /* this urb is terminated, clean up */
 303                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 304                         __func__, status);
 305                 return;
 306         default:
 307                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 308                         __func__, status);
 309                 goto exit;
 310         }
 311
 312         /*
 313          * This information is still unknown what it can be used for.
 314          * If anyone has an idea, please let the author know...
 315          *
 316          * Rumor has it this endpoint is used to notify when data
 317          * is ready to be read from the bulk ones.
 318          */
 319         usb_serial_debug_data(debug, &port->dev, __func__,
 320                               urb->actual_length, urb->transfer_buffer);
 321
 322 exit:
 323         result = usb_submit_urb(urb, GFP_ATOMIC);
 324         if (result)
 325                 dev_err(&urb->dev->dev,
 326                                 "%s - Error %d submitting interrupt urb\n",
 327                                                         __func__, result);
 328 }
 329
 330 static int palm_os_3_probe(struct usb_serial *serial,
 331                                                 const struct usb_device_id *id)
 332 {
 333         struct device *dev = &serial->dev->dev;
 334         struct visor_connection_info *connection_info;
 335         unsigned char *transfer_buffer;
 336         char *string;
 337         int retval = 0;
 338         int i;
 339         int num_ports = 0;
 340
 341         transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 342         if (!transfer_buffer) {
 343                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
 344                         sizeof(*connection_info));
 345                 return -ENOMEM;
 346         }
 347
 348         /* send a get connection info request */
 349         retval = usb_control_msg(serial->dev,
 350                                   usb_rcvctrlpipe(serial->dev, 0),
 351                                   VISOR_GET_CONNECTION_INFORMATION,
 352                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 353                                   sizeof(*connection_info), 300);
 354         if (retval < 0) {
 355                 dev_err(dev, "%s - error %d getting connection information\n",
 356                         __func__, retval);
 357                 goto exit;
 358         }
 359
 360         if (retval == sizeof(*connection_info)) {
 361                         connection_info = (struct visor_connection_info *)
 362                                                         transfer_buffer;
 363
 364                 num_ports = le16_to_cpu(connection_info->num_ports);
 365                 for (i = 0; i < num_ports; ++i) {
 366                         switch (
 367                            connection_info->connections[i].port_function_id) {
 368                         case VISOR_FUNCTION_GENERIC:
 369                                 string = "Generic";
 370                                 break;
 371                         case VISOR_FUNCTION_DEBUGGER:
 372                                 string = "Debugger";
 373                                 break;
 374                         case VISOR_FUNCTION_HOTSYNC:
 375                                 string = "HotSync";
 376                                 break;
 377                         case VISOR_FUNCTION_CONSOLE:
 378                                 string = "Console";
 379                                 break;
 380                         case VISOR_FUNCTION_REMOTE_FILE_SYS:
 381                                 string = "Remote File System";
 382                                 break;
 383                         default:
 384                                 string = "unknown";
 385                                 break;
 386                         }
 387                         dev_info(dev, "%s: port %d, is for %s use\n",
 388                                 serial->type->description,
 389                                 connection_info->connections[i].port, string);
 390                 }
 391         }
 392         /*
 393         * Handle devices that report invalid stuff here.
 394         */
 395         if (num_ports == 0 || num_ports > 2) {
 396                 dev_warn(dev, "%s: No valid connect info available\n",
 397                         serial->type->description);
 398                 num_ports = 2;
 399         }
 400
 401         dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
 402                 num_ports);
 403
 404         /*
 405          * save off our num_ports info so that we can use it in the
 406          * calc_num_ports callback
 407          */
 408         usb_set_serial_data(serial, (void *)(long)num_ports);
 409
 410         /* ask for the number of bytes available, but ignore the
 411            response as it is broken */
 412         retval = usb_control_msg(serial->dev,
 413                                   usb_rcvctrlpipe(serial->dev, 0),
 414                                   VISOR_REQUEST_BYTES_AVAILABLE,
 415                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 416                                   0x02, 300);
 417         if (retval < 0)
 418                 dev_err(dev, "%s - error %d getting bytes available request\n",
 419                         __func__, retval);
 420         retval = 0;
 421
 422 exit:
 423         kfree(transfer_buffer);
 424
 425         return retval;
 426 }
 427
 428 static int palm_os_4_probe(struct usb_serial *serial,
 429                                                 const struct usb_device_id *id)
 430 {
 431         struct device *dev = &serial->dev->dev;
 432         struct palm_ext_connection_info *connection_info;
 433         unsigned char *transfer_buffer;
 434         int retval;
 435
 436         transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
 437         if (!transfer_buffer) {
 438                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
 439                         sizeof(*connection_info));
 440                 return -ENOMEM;
 441         }
 442
 443         retval = usb_control_msg(serial->dev,
 444                                   usb_rcvctrlpipe(serial->dev, 0),
 445                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 446                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 447                                   sizeof(*connection_info), 300);
 448         if (retval < 0)
 449                 dev_err(dev, "%s - error %d getting connection info\n",
 450                         __func__, retval);
 451         else
 452                 usb_serial_debug_data(debug, &serial->dev->dev, __func__,
 453                                       retval, transfer_buffer);
 454
 455         kfree(transfer_buffer);
 456         return 0;
 457 }
 458
 459
 460 static int visor_probe(struct usb_serial *serial,
 461                                         const struct usb_device_id *id)
 462 {
 463         int retval = 0;
 464         int (*startup)(struct usb_serial *serial,
 465                                         const struct usb_device_id *id);
 466
 467         /*
 468          * some Samsung Android phones in modem mode have the same ID
 469          * as SPH-I500, but they are ACM devices, so dont bind to them
 470          */
 471         if (id->idVendor == SAMSUNG_VENDOR_ID &&
 472                 id->idProduct == SAMSUNG_SPH_I500_ID &&
 473                 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
 474                 serial->dev->descriptor.bDeviceSubClass ==
 475                         USB_CDC_SUBCLASS_ACM)
 476                 return -ENODEV;
 477
 478         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 479                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 480                         serial->dev->actconfig->desc.bConfigurationValue);
 481                 return -ENODEV;
 482         }
 483
 484         if (id->driver_info) {
 485                 startup = (void *)id->driver_info;
 486                 retval = startup(serial, id);
 487         }
 488
 489         return retval;
 490 }
 491
 492 static int visor_calc_num_ports(struct usb_serial *serial)
 493 {
 494         int num_ports = (int)(long)(usb_get_serial_data(serial));
 495
 496         if (num_ports)
 497                 usb_set_serial_data(serial, NULL);
 498
 499         return num_ports;
 500 }
 501
 502 static int clie_3_5_startup(struct usb_serial *serial)
 503 {
 504         struct device *dev = &serial->dev->dev;
 505         int result;
 506         u8 *data;
 507
 508         data = kmalloc(1, GFP_KERNEL);
 509         if (!data)
 510                 return -ENOMEM;
 511
 512         /*
 513          * Note that PEG-300 series devices expect the following two calls.
 514          */
 515
 516         /* get the config number */
 517         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 518                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 519                                   0, 0, data, 1, 3000);
 520         if (result < 0) {
 521                 dev_err(dev, "%s: get config number failed: %d\n",
 522                                                         __func__, result);
 523                 goto out;
 524         }
 525         if (result != 1) {
 526                 dev_err(dev, "%s: get config number bad return length: %d\n",
 527                                                         __func__, result);
 528                 result = -EIO;
 529                 goto out;
 530         }
 531
 532         /* get the interface number */
 533         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 534                                   USB_REQ_GET_INTERFACE,
 535                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 536                                   0, 0, data, 1, 3000);
 537         if (result < 0) {
 538                 dev_err(dev, "%s: get interface number failed: %d\n",
 539                                                         __func__, result);
 540                 goto out;
 541         }
 542         if (result != 1) {
 543                 dev_err(dev,
 544                         "%s: get interface number bad return length: %d\n",
 545                                                         __func__, result);
 546                 result = -EIO;
 547                 goto out;
 548         }
 549
 550         result = 0;
 551 out:
 552         kfree(data);
 553
 554         return result;
 555 }
 556
 557 static int treo_attach(struct usb_serial *serial)
 558 {
 559         struct usb_serial_port *swap_port;
 560
 561         /* Only do this endpoint hack for the Handspring devices with
 562          * interrupt in endpoints, which for now are the Treo devices. */
 563         if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
 564                                                 == HANDSPRING_VENDOR_ID) ||
 565                 (le16_to_cpu(serial->dev->descriptor.idVendor)
 566                                                 == KYOCERA_VENDOR_ID)) ||
 567                 (serial->num_interrupt_in == 0))
 568                 return 0;
 569
 570         /*
 571         * It appears that Treos and Kyoceras want to use the
 572         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 573         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 574         * Note that swapping the bulk out endpoints would break lots of
 575         * apps that want to communicate on the second port.
 576         */
 577 #define COPY_PORT(dest, src)                                            \
 578         do { \
 579                 dest->read_urb = src->read_urb;                         \
 580                 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
 581                 dest->bulk_in_buffer = src->bulk_in_buffer;             \
 582                 dest->interrupt_in_urb = src->interrupt_in_urb;         \
 583                 dest->interrupt_in_endpointAddress = \
 584                                         src->interrupt_in_endpointAddress;\
 585                 dest->interrupt_in_buffer = src->interrupt_in_buffer;   \
 586         } while (0);
 587
 588         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 589         if (!swap_port)
 590                 return -ENOMEM;
 591         COPY_PORT(swap_port, serial->port[0]);
 592         COPY_PORT(serial->port[0], serial->port[1]);
 593         COPY_PORT(serial->port[1], swap_port);
 594         kfree(swap_port);
 595
 596         return 0;
 597 }
 598
 599 static int clie_5_attach(struct usb_serial *serial)
 600 {
 601         struct usb_serial_port *port;
 602         unsigned int pipe;
 603         int j;
 604
 605         /* TH55 registers 2 ports.
 606            Communication in from the UX50/TH55 uses bulk_in_endpointAddress
 607            from port 0. Communication out to the UX50/TH55 uses
 608            bulk_out_endpointAddress from port 1
 609
 610            Lets do a quick and dirty mapping
 611          */
 612
 613         /* some sanity check */
 614         if (serial->num_ports < 2)
 615                 return -1;
 616
 617         /* port 0 now uses the modified endpoint Address */
 618         port = serial->port[0];
 619         port->bulk_out_endpointAddress =
 620                                 serial->port[1]->bulk_out_endpointAddress;
 621
 622         pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress);
 623         for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j)
 624                 port->write_urbs[j]->pipe = pipe;
 625
 626         return 0;
 627 }
 628
 629 module_usb_serial_driver(visor_driver, serial_drivers);
 630
 631 MODULE_AUTHOR(DRIVER_AUTHOR);
 632 MODULE_DESCRIPTION(DRIVER_DESC);
 633 MODULE_LICENSE("GPL");
 634
 635 module_param(debug, bool, S_IRUGO | S_IWUSR);
 636 MODULE_PARM_DESC(debug, "Debug enabled or not");