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