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 static const struct usb_device_id id_table[] = {
  55         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
  56                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
  57         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
  58                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  59         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
  60                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  61         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
  62                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  63         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
  64                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  65         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
  66                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  67         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
  68                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  69         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
  70                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  71         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
  72                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  73         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
  74                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  75         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
  76                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  77         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
  78                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  79         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
  80                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  81         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
  82                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  83         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
  84                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  85         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
  86                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  87         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
  88                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  89         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
  90                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  91         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
  92                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  93         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
  94                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  95         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
  96                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  97         { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
  98                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  99         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
 100                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 101         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
 102                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 103         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
 104                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 105         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 106                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 107         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 108                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 109         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 110                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 111         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 112                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 113         { }                                     /* Terminating entry */
 114 };
 115
 116 static const struct usb_device_id clie_id_5_table[] = {
 117         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 118                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 119         { }                                     /* Terminating entry */
 120 };
 121
 122 static const struct usb_device_id clie_id_3_5_table[] = {
 123         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 124         { }                                     /* Terminating entry */
 125 };
 126
 127 static const struct usb_device_id id_table_combined[] = {
 128         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 129         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 130         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 131         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
 132         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 133         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 134         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 135         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 136         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 137         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 138         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 139         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 140         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 141         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 142         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 143         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 144         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 145         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 146         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 147         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 148         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 149         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 150         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 151         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 152         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 153         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
 154         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 155         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 156         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 157         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 158         { }                                     /* Terminating entry */
 159 };
 160
 161 MODULE_DEVICE_TABLE(usb, id_table_combined);
 162
 163 /* All of the device info needed for the Handspring Visor,
 164    and Palm 4.0 devices */
 165 static struct usb_serial_driver handspring_device = {
 166         .driver = {
 167                 .owner =        THIS_MODULE,
 168                 .name =         "visor",
 169         },
 170         .description =          "Handspring Visor / Palm OS",
 171         .id_table =             id_table,
 172         .num_ports =            2,
 173         .bulk_out_size =        256,
 174         .open =                 visor_open,
 175         .close =                visor_close,
 176         .throttle =             usb_serial_generic_throttle,
 177         .unthrottle =           usb_serial_generic_unthrottle,
 178         .attach =               treo_attach,
 179         .probe =                visor_probe,
 180         .calc_num_ports =       visor_calc_num_ports,
 181         .read_int_callback =    visor_read_int_callback,
 182 };
 183
 184 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 185 static struct usb_serial_driver clie_5_device = {
 186         .driver = {
 187                 .owner =        THIS_MODULE,
 188                 .name =         "clie_5",
 189         },
 190         .description =          "Sony Clie 5.0",
 191         .id_table =             clie_id_5_table,
 192         .num_ports =            2,
 193         .bulk_out_size =        256,
 194         .open =                 visor_open,
 195         .close =                visor_close,
 196         .throttle =             usb_serial_generic_throttle,
 197         .unthrottle =           usb_serial_generic_unthrottle,
 198         .attach =               clie_5_attach,
 199         .probe =                visor_probe,
 200         .calc_num_ports =       visor_calc_num_ports,
 201         .read_int_callback =    visor_read_int_callback,
 202 };
 203
 204 /* device info for the Sony Clie OS version 3.5 */
 205 static struct usb_serial_driver clie_3_5_device = {
 206         .driver = {
 207                 .owner =        THIS_MODULE,
 208                 .name =         "clie_3.5",
 209         },
 210         .description =          "Sony Clie 3.5",
 211         .id_table =             clie_id_3_5_table,
 212         .num_ports =            1,
 213         .bulk_out_size =        256,
 214         .open =                 visor_open,
 215         .close =                visor_close,
 216         .throttle =             usb_serial_generic_throttle,
 217         .unthrottle =           usb_serial_generic_unthrottle,
 218         .attach =               clie_3_5_startup,
 219 };
 220
 221 static struct usb_serial_driver * const serial_drivers[] = {
 222         &handspring_device, &clie_5_device, &clie_3_5_device, NULL
 223 };
 224
 225 /******************************************************************************
 226  * Handspring Visor specific driver functions
 227  ******************************************************************************/
 228 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
 229 {
 230         int result = 0;
 231
 232         if (!port->read_urb) {
 233                 /* this is needed for some brain dead Sony devices */
 234                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 235                 return -ENODEV;
 236         }
 237
 238         /* Start reading from the device */
 239         result = usb_serial_generic_open(tty, port);
 240         if (result)
 241                 goto exit;
 242
 243         if (port->interrupt_in_urb) {
 244                 dev_dbg(&port->dev, "adding interrupt input for treo\n");
 245                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 246                 if (result)
 247                         dev_err(&port->dev,
 248                             "%s - failed submitting interrupt urb, error %d\n",
 249                                                         __func__, result);
 250         }
 251 exit:
 252         return result;
 253 }
 254
 255
 256 static void visor_close(struct usb_serial_port *port)
 257 {
 258         unsigned char *transfer_buffer;
 259
 260         usb_serial_generic_close(port);
 261         usb_kill_urb(port->interrupt_in_urb);
 262
 263         transfer_buffer = kmalloc(0x12, GFP_KERNEL);
 264         if (!transfer_buffer)
 265                 return;
 266         usb_control_msg(port->serial->dev,
 267                                          usb_rcvctrlpipe(port->serial->dev, 0),
 268                                          VISOR_CLOSE_NOTIFICATION, 0xc2,
 269                                          0x0000, 0x0000,
 270                                          transfer_buffer, 0x12, 300);
 271         kfree(transfer_buffer);
 272 }
 273
 274 static void visor_read_int_callback(struct urb *urb)
 275 {
 276         struct usb_serial_port *port = urb->context;
 277         int status = urb->status;
 278         int result;
 279
 280         switch (status) {
 281         case 0:
 282                 /* success */
 283                 break;
 284         case -ECONNRESET:
 285         case -ENOENT:
 286         case -ESHUTDOWN:
 287                 /* this urb is terminated, clean up */
 288                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 289                         __func__, status);
 290                 return;
 291         default:
 292                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 293                         __func__, status);
 294                 goto exit;
 295         }
 296
 297         /*
 298          * This information is still unknown what it can be used for.
 299          * If anyone has an idea, please let the author know...
 300          *
 301          * Rumor has it this endpoint is used to notify when data
 302          * is ready to be read from the bulk ones.
 303          */
 304         usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 305                               urb->transfer_buffer);
 306
 307 exit:
 308         result = usb_submit_urb(urb, GFP_ATOMIC);
 309         if (result)
 310                 dev_err(&urb->dev->dev,
 311                                 "%s - Error %d submitting interrupt urb\n",
 312                                                         __func__, result);
 313 }
 314
 315 static int palm_os_3_probe(struct usb_serial *serial,
 316                                                 const struct usb_device_id *id)
 317 {
 318         struct device *dev = &serial->dev->dev;
 319         struct visor_connection_info *connection_info;
 320         unsigned char *transfer_buffer;
 321         char *string;
 322         int retval = 0;
 323         int i;
 324         int num_ports = 0;
 325
 326         transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 327         if (!transfer_buffer)
 328                 return -ENOMEM;
 329
 330         /* send a get connection info request */
 331         retval = usb_control_msg(serial->dev,
 332                                   usb_rcvctrlpipe(serial->dev, 0),
 333                                   VISOR_GET_CONNECTION_INFORMATION,
 334                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 335                                   sizeof(*connection_info), 300);
 336         if (retval < 0) {
 337                 dev_err(dev, "%s - error %d getting connection information\n",
 338                         __func__, retval);
 339                 goto exit;
 340         }
 341
 342         if (retval == sizeof(*connection_info)) {
 343                         connection_info = (struct visor_connection_info *)
 344                                                         transfer_buffer;
 345
 346                 num_ports = le16_to_cpu(connection_info->num_ports);
 347                 for (i = 0; i < num_ports; ++i) {
 348                         switch (
 349                            connection_info->connections[i].port_function_id) {
 350                         case VISOR_FUNCTION_GENERIC:
 351                                 string = "Generic";
 352                                 break;
 353                         case VISOR_FUNCTION_DEBUGGER:
 354                                 string = "Debugger";
 355                                 break;
 356                         case VISOR_FUNCTION_HOTSYNC:
 357                                 string = "HotSync";
 358                                 break;
 359                         case VISOR_FUNCTION_CONSOLE:
 360                                 string = "Console";
 361                                 break;
 362                         case VISOR_FUNCTION_REMOTE_FILE_SYS:
 363                                 string = "Remote File System";
 364                                 break;
 365                         default:
 366                                 string = "unknown";
 367                                 break;
 368                         }
 369                         dev_info(dev, "%s: port %d, is for %s use\n",
 370                                 serial->type->description,
 371                                 connection_info->connections[i].port, string);
 372                 }
 373         }
 374         /*
 375         * Handle devices that report invalid stuff here.
 376         */
 377         if (num_ports == 0 || num_ports > 2) {
 378                 dev_warn(dev, "%s: No valid connect info available\n",
 379                         serial->type->description);
 380                 num_ports = 2;
 381         }
 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         /*
 549         * It appears that Treos and Kyoceras want to use the
 550         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 551         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 552         * Note that swapping the bulk out endpoints would break lots of
 553         * apps that want to communicate on the second port.
 554         */
 555 #define COPY_PORT(dest, src)                                            \
 556         do { \
 557                 int i;                                                  \
 558                                                                         \
 559                 for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) {      \
 560                         dest->read_urbs[i] = src->read_urbs[i];         \
 561                         dest->read_urbs[i]->context = dest;             \
 562                         dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \
 563                 }                                                       \
 564                 dest->read_urb = src->read_urb;                         \
 565                 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
 566                 dest->bulk_in_buffer = src->bulk_in_buffer;             \
 567                 dest->bulk_in_size = src->bulk_in_size;                 \
 568                 dest->interrupt_in_urb = src->interrupt_in_urb;         \
 569                 dest->interrupt_in_urb->context = dest;                 \
 570                 dest->interrupt_in_endpointAddress = \
 571                                         src->interrupt_in_endpointAddress;\
 572                 dest->interrupt_in_buffer = src->interrupt_in_buffer;   \
 573         } while (0);
 574
 575         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 576         if (!swap_port)
 577                 return -ENOMEM;
 578         COPY_PORT(swap_port, serial->port[0]);
 579         COPY_PORT(serial->port[0], serial->port[1]);
 580         COPY_PORT(serial->port[1], swap_port);
 581         kfree(swap_port);
 582
 583         return 0;
 584 }
 585
 586 static int clie_5_attach(struct usb_serial *serial)
 587 {
 588         struct usb_serial_port *port;
 589         unsigned int pipe;
 590         int j;
 591
 592         /* TH55 registers 2 ports.
 593            Communication in from the UX50/TH55 uses bulk_in_endpointAddress
 594            from port 0. Communication out to the UX50/TH55 uses
 595            bulk_out_endpointAddress from port 1
 596
 597            Lets do a quick and dirty mapping
 598          */
 599
 600         /* some sanity check */
 601         if (serial->num_ports < 2)
 602                 return -1;
 603
 604         /* port 0 now uses the modified endpoint Address */
 605         port = serial->port[0];
 606         port->bulk_out_endpointAddress =
 607                                 serial->port[1]->bulk_out_endpointAddress;
 608
 609         pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress);
 610         for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j)
 611                 port->write_urbs[j]->pipe = pipe;
 612
 613         return 0;
 614 }
 615
 616 module_usb_serial_driver(serial_drivers, id_table_combined);
 617
 618 MODULE_AUTHOR(DRIVER_AUTHOR);
 619 MODULE_DESCRIPTION(DRIVER_DESC);
 620 MODULE_LICENSE("GPL");