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