LXR linux/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 */
  40static int  visor_open(struct tty_struct *tty, struct usb_serial_port *port);
  41static void visor_close(struct usb_serial_port *port);
  42static int  visor_probe(struct usb_serial *serial,
  43                                        const struct usb_device_id *id);
  44static int  visor_calc_num_ports(struct usb_serial *serial);
  45static void visor_read_int_callback(struct urb *urb);
  46static int  clie_3_5_startup(struct usb_serial *serial);
  47static int  treo_attach(struct usb_serial *serial);
  48static int clie_5_attach(struct usb_serial *serial);
  49static int palm_os_3_probe(struct usb_serial *serial,
  50                                        const struct usb_device_id *id);
  51static int palm_os_4_probe(struct usb_serial *serial,
  52                                        const struct usb_device_id *id);
  53
  54static 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
 116static 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
 122static 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
 127static 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
 161MODULE_DEVICE_TABLE(usb, id_table_combined);
 162
 163/* All of the device info needed for the Handspring Visor,
 164   and Palm 4.0 devices */
 165static 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 */
 185static 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 */
 205static 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
 221static 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 ******************************************************************************/
 228static 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        }
 251exit:
 252        return result;
 253}
 254
 255
 256static void visor_close(struct usb_serial_port *port)
 257{
 258        unsigned char *transfer_buffer;
 259
 260        /* shutdown our urbs */
 261        usb_serial_generic_close(port);
 262        usb_kill_urb(port->interrupt_in_urb);
 263
 264        mutex_lock(&port->serial->disc_mutex);
 265        if (!port->serial->disconnected) {
 266                /* Try to send shutdown message, unless the device is gone */
 267                transfer_buffer =  kmalloc(0x12, GFP_KERNEL);
 268                if (transfer_buffer) {
 269                        usb_control_msg(port->serial->dev,
 270                                         usb_rcvctrlpipe(port->serial->dev, 0),
 271                                         VISOR_CLOSE_NOTIFICATION, 0xc2,
 272                                         0x0000, 0x0000,
 273                                         transfer_buffer, 0x12, 300);
 274                        kfree(transfer_buffer);
 275                }
 276        }
 277        mutex_unlock(&port->serial->disc_mutex);
 278}
 279
 280static void visor_read_int_callback(struct urb *urb)
 281{
 282        struct usb_serial_port *port = urb->context;
 283        int status = urb->status;
 284        int result;
 285
 286        switch (status) {
 287        case 0:
 288                /* success */
 289                break;
 290        case -ECONNRESET:
 291        case -ENOENT:
 292        case -ESHUTDOWN:
 293                /* this urb is terminated, clean up */
 294                dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 295                        __func__, status);
 296                return;
 297        default:
 298                dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 299                        __func__, status);
 300                goto exit;
 301        }
 302
 303        /*
 304         * This information is still unknown what it can be used for.
 305         * If anyone has an idea, please let the author know...
 306         *
 307         * Rumor has it this endpoint is used to notify when data
 308         * is ready to be read from the bulk ones.
 309         */
 310        usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 311                              urb->transfer_buffer);
 312
 313exit:
 314        result = usb_submit_urb(urb, GFP_ATOMIC);
 315        if (result)
 316                dev_err(&urb->dev->dev,
 317                                "%s - Error %d submitting interrupt urb\n",
 318                                                        __func__, result);
 319}
 320
 321static int palm_os_3_probe(struct usb_serial *serial,
 322                                                const struct usb_device_id *id)
 323{
 324        struct device *dev = &serial->dev->dev;
 325        struct visor_connection_info *connection_info;
 326        unsigned char *transfer_buffer;
 327        char *string;
 328        int retval = 0;
 329        int i;
 330        int num_ports = 0;
 331
 332        transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 333        if (!transfer_buffer) {
 334                dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
 335                        sizeof(*connection_info));
 336                return -ENOMEM;
 337        }
 338
 339        /* send a get connection info request */
 340        retval = usb_control_msg(serial->dev,
 341                                  usb_rcvctrlpipe(serial->dev, 0),
 342                                  VISOR_GET_CONNECTION_INFORMATION,
 343                                  0xc2, 0x0000, 0x0000, transfer_buffer,
 344                                  sizeof(*connection_info), 300);
 345        if (retval < 0) {
 346                dev_err(dev, "%s - error %d getting connection information\n",
 347                        __func__, retval);
 348                goto exit;
 349        }
 350
 351        if (retval == sizeof(*connection_info)) {
 352                        connection_info = (struct visor_connection_info *)
 353                                                        transfer_buffer;
 354
 355                num_ports = le16_to_cpu(connection_info->num_ports);
 356                for (i = 0; i < num_ports; ++i) {
 357                        switch (
 358                           connection_info->connections[i].port_function_id) {
 359                        case VISOR_FUNCTION_GENERIC:
 360                                string = "Generic";
 361                                break;
 362                        case VISOR_FUNCTION_DEBUGGER:
 363                                string = "Debugger";
 364                                break;
 365                        case VISOR_FUNCTION_HOTSYNC:
 366                                string = "HotSync";
 367                                break;
 368                        case VISOR_FUNCTION_CONSOLE:
 369                                string = "Console";
 370                                break;
 371                        case VISOR_FUNCTION_REMOTE_FILE_SYS:
 372                                string = "Remote File System";
 373                                break;
 374                        default:
 375                                string = "unknown";
 376                                break;
 377                        }
 378                        dev_info(dev, "%s: port %d, is for %s use\n",
 379                                serial->type->description,
 380                                connection_info->connections[i].port, string);
 381                }
 382        }
 383        /*
 384        * Handle devices that report invalid stuff here.
 385        */
 386        if (num_ports == 0 || num_ports > 2) {
 387                dev_warn(dev, "%s: No valid connect info available\n",
 388                        serial->type->description);
 389                num_ports = 2;
 390        }
 391
 392        dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
 393                num_ports);
 394
 395        /*
 396         * save off our num_ports info so that we can use it in the
 397         * calc_num_ports callback
 398         */
 399        usb_set_serial_data(serial, (void *)(long)num_ports);
 400
 401        /* ask for the number of bytes available, but ignore the
 402           response as it is broken */
 403        retval = usb_control_msg(serial->dev,
 404                                  usb_rcvctrlpipe(serial->dev, 0),
 405                                  VISOR_REQUEST_BYTES_AVAILABLE,
 406                                  0xc2, 0x0000, 0x0005, transfer_buffer,
 407                                  0x02, 300);
 408        if (retval < 0)
 409                dev_err(dev, "%s - error %d getting bytes available request\n",
 410                        __func__, retval);
 411        retval = 0;
 412
 413exit:
 414        kfree(transfer_buffer);
 415
 416        return retval;
 417}
 418
 419static int palm_os_4_probe(struct usb_serial *serial,
 420                                                const struct usb_device_id *id)
 421{
 422        struct device *dev = &serial->dev->dev;
 423        struct palm_ext_connection_info *connection_info;
 424        unsigned char *transfer_buffer;
 425        int retval;
 426
 427        transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
 428        if (!transfer_buffer) {
 429                dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
 430                        sizeof(*connection_info));
 431                return -ENOMEM;
 432        }
 433
 434        retval = usb_control_msg(serial->dev,
 435                                  usb_rcvctrlpipe(serial->dev, 0),
 436                                  PALM_GET_EXT_CONNECTION_INFORMATION,
 437                                  0xc2, 0x0000, 0x0000, transfer_buffer,
 438                                  sizeof(*connection_info), 300);
 439        if (retval < 0)
 440                dev_err(dev, "%s - error %d getting connection info\n",
 441                        __func__, retval);
 442        else
 443                usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
 444
 445        kfree(transfer_buffer);
 446        return 0;
 447}
 448
 449
 450static int visor_probe(struct usb_serial *serial,
 451                                        const struct usb_device_id *id)
 452{
 453        int retval = 0;
 454        int (*startup)(struct usb_serial *serial,
 455                                        const struct usb_device_id *id);
 456
 457        /*
 458         * some Samsung Android phones in modem mode have the same ID
 459         * as SPH-I500, but they are ACM devices, so dont bind to them
 460         */
 461        if (id->idVendor == SAMSUNG_VENDOR_ID &&
 462                id->idProduct == SAMSUNG_SPH_I500_ID &&
 463                serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
 464                serial->dev->descriptor.bDeviceSubClass ==
 465                        USB_CDC_SUBCLASS_ACM)
 466                return -ENODEV;
 467
 468        if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 469                dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 470                        serial->dev->actconfig->desc.bConfigurationValue);
 471                return -ENODEV;
 472        }
 473
 474        if (id->driver_info) {
 475                startup = (void *)id->driver_info;
 476                retval = startup(serial, id);
 477        }
 478
 479        return retval;
 480}
 481
 482static int visor_calc_num_ports(struct usb_serial *serial)
 483{
 484        int num_ports = (int)(long)(usb_get_serial_data(serial));
 485
 486        if (num_ports)
 487                usb_set_serial_data(serial, NULL);
 488
 489        return num_ports;
 490}
 491
 492static int clie_3_5_startup(struct usb_serial *serial)
 493{
 494        struct device *dev = &serial->dev->dev;
 495        int result;
 496        u8 *data;
 497
 498        data = kmalloc(1, GFP_KERNEL);
 499        if (!data)
 500                return -ENOMEM;
 501
 502        /*
 503         * Note that PEG-300 series devices expect the following two calls.
 504         */
 505
 506        /* get the config number */
 507        result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 508                                  USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 509                                  0, 0, data, 1, 3000);
 510        if (result < 0) {
 511                dev_err(dev, "%s: get config number failed: %d\n",
 512                                                        __func__, result);
 513                goto out;
 514        }
 515        if (result != 1) {
 516                dev_err(dev, "%s: get config number bad return length: %d\n",
 517                                                        __func__, result);
 518                result = -EIO;
 519                goto out;
 520        }
 521
 522        /* get the interface number */
 523        result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 524                                  USB_REQ_GET_INTERFACE,
 525                                  USB_DIR_IN | USB_RECIP_INTERFACE,
 526                                  0, 0, data, 1, 3000);
 527        if (result < 0) {
 528                dev_err(dev, "%s: get interface number failed: %d\n",
 529                                                        __func__, result);
 530                goto out;
 531        }
 532        if (result != 1) {
 533                dev_err(dev,
 534                        "%s: get interface number bad return length: %d\n",
 535                                                        __func__, result);
 536                result = -EIO;
 537                goto out;
 538        }
 539
 540        result = 0;
 541out:
 542        kfree(data);
 543
 544        return result;
 545}
 546
 547static int treo_attach(struct usb_serial *serial)
 548{
 549        struct usb_serial_port *swap_port;
 550
 551        /* Only do this endpoint hack for the Handspring devices with
 552         * interrupt in endpoints, which for now are the Treo devices. */
 553        if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
 554                                                == HANDSPRING_VENDOR_ID) ||
 555                (le16_to_cpu(serial->dev->descriptor.idVendor)
 556                                                == KYOCERA_VENDOR_ID)) ||
 557                (serial->num_interrupt_in == 0))
 558                return 0;
 559
 560        /*
 561        * It appears that Treos and Kyoceras want to use the
 562        * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 563        * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 564        * Note that swapping the bulk out endpoints would break lots of
 565        * apps that want to communicate on the second port.
 566        */
 567#define COPY_PORT(dest, src)                                            \
 568        do { \
 569                dest->read_urb = src->read_urb;                         \
 570                dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
 571                dest->bulk_in_buffer = src->bulk_in_buffer;             \
 572                dest->interrupt_in_urb = src->interrupt_in_urb;         \
 573                dest->interrupt_in_endpointAddress = \
 574                                        src->interrupt_in_endpointAddress;\
 575                dest->interrupt_in_buffer = src->interrupt_in_buffer;   \
 576        } while (0);
 577
 578        swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 579        if (!swap_port)
 580                return -ENOMEM;
 581        COPY_PORT(swap_port, serial->port[0]);
 582        COPY_PORT(serial->port[0], serial->port[1]);
 583        COPY_PORT(serial->port[1], swap_port);
 584        kfree(swap_port);
 585
 586        return 0;
 587}
 588
 589static int clie_5_attach(struct usb_serial *serial)
 590{
 591        struct usb_serial_port *port;
 592        unsigned int pipe;
 593        int j;
 594
 595        /* TH55 registers 2 ports.
 596           Communication in from the UX50/TH55 uses bulk_in_endpointAddress
 597           from port 0. Communication out to the UX50/TH55 uses
 598           bulk_out_endpointAddress from port 1
 599
 600           Lets do a quick and dirty mapping
 601         */
 602
 603        /* some sanity check */
 604        if (serial->num_ports < 2)
 605                return -1;
 606
 607        /* port 0 now uses the modified endpoint Address */
 608        port = serial->port[0];
 609        port->bulk_out_endpointAddress =
 610                                serial->port[1]->bulk_out_endpointAddress;
 611
 612        pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress);
 613        for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j)
 614                port->write_urbs[j]->pipe = pipe;
 615
 616        return 0;
 617}
 618
 619module_usb_serial_driver(serial_drivers, id_table_combined);
 620
 621MODULE_AUTHOR(DRIVER_AUTHOR);
 622MODULE_DESCRIPTION(DRIVER_DESC);
 623MODULE_LICENSE("GPL");
 624