drivers/usb/serial/visor.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * USB HandSpring Visor, Palm m50x, and Sony Clie driver
   4  * (supports all of the Palm OS USB devices)
   5  *
   6  *      Copyright (C) 1999 - 2004
   7  *          Greg Kroah-Hartman ([email protected])
   8  *
   9  * See Documentation/usb/usb-serial.txt for more information on using this
  10  * driver
  11  *
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/slab.h>
  17 #include <linux/tty.h>
  18 #include <linux/tty_driver.h>
  19 #include <linux/tty_flip.h>
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/spinlock.h>
  23 #include <linux/uaccess.h>
  24 #include <linux/usb.h>
  25 #include <linux/usb/serial.h>
  26 #include <linux/usb/cdc.h>
  27 #include "visor.h"
  28
  29 /*
  30  * Version Information
  31  */
  32 #define DRIVER_AUTHOR "Greg Kroah-Hartman <[email protected]>"
  33 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
  34
  35 /* function prototypes for a handspring visor */
  36 static int  visor_open(struct tty_struct *tty, struct usb_serial_port *port);
  37 static void visor_close(struct usb_serial_port *port);
  38 static int  visor_probe(struct usb_serial *serial,
  39                                         const struct usb_device_id *id);
  40 static int  visor_calc_num_ports(struct usb_serial *serial,
  41                                         struct usb_serial_endpoints *epds);
  42 static int  clie_5_calc_num_ports(struct usb_serial *serial,
  43                                         struct usb_serial_endpoints *epds);
  44 static void visor_read_int_callback(struct urb *urb);
  45 static int  clie_3_5_startup(struct usb_serial *serial);
  46 static int palm_os_3_probe(struct usb_serial *serial,
  47                                         const struct usb_device_id *id);
  48 static int palm_os_4_probe(struct usb_serial *serial,
  49                                         const struct usb_device_id *id);
  50
  51 static const struct usb_device_id id_table[] = {
  52         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
  53                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
  54         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
  55                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  56         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
  57                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  58         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
  59                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  60         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
  61                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  62         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
  63                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  64         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
  65                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  66         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
  67                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  68         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
  69                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  70         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
  71                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  72         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
  73                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  74         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
  75                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  76         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
  77                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  78         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
  79                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  80         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
  81                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  82         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
  83                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  84         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
  85                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  86         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
  87                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  88         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
  89                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  90         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
  91                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  92         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
  93                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  94         { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
  95                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  96         { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
  97                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
  98         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
  99                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 100         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
 101                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 102         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 103                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 104         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 105                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 106         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 107                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 108         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 109                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 110         { }                                     /* Terminating entry */
 111 };
 112
 113 static const struct usb_device_id clie_id_5_table[] = {
 114         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 115                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 116         { }                                     /* Terminating entry */
 117 };
 118
 119 static const struct usb_device_id clie_id_3_5_table[] = {
 120         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 121         { }                                     /* Terminating entry */
 122 };
 123
 124 static const struct usb_device_id id_table_combined[] = {
 125         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 126         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 127         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 128         { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
 129         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 130         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 131         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 132         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 133         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 134         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 135         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 136         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 137         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 138         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 139         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 140         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 141         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 142         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 143         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 144         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 145         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 146         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 147         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 148         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 149         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 150         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
 151         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 152         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 153         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 154         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 155         { }                                     /* Terminating entry */
 156 };
 157
 158 MODULE_DEVICE_TABLE(usb, id_table_combined);
 159
 160 /* All of the device info needed for the Handspring Visor,
 161    and Palm 4.0 devices */
 162 static struct usb_serial_driver handspring_device = {
 163         .driver = {
 164                 .owner =        THIS_MODULE,
 165                 .name =         "visor",
 166         },
 167         .description =          "Handspring Visor / Palm OS",
 168         .id_table =             id_table,
 169         .num_ports =            2,
 170         .bulk_out_size =        256,
 171         .open =                 visor_open,
 172         .close =                visor_close,
 173         .throttle =             usb_serial_generic_throttle,
 174         .unthrottle =           usb_serial_generic_unthrottle,
 175         .probe =                visor_probe,
 176         .calc_num_ports =       visor_calc_num_ports,
 177         .read_int_callback =    visor_read_int_callback,
 178 };
 179
 180 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 181 static struct usb_serial_driver clie_5_device = {
 182         .driver = {
 183                 .owner =        THIS_MODULE,
 184                 .name =         "clie_5",
 185         },
 186         .description =          "Sony Clie 5.0",
 187         .id_table =             clie_id_5_table,
 188         .num_ports =            2,
 189         .num_bulk_out =         2,
 190         .bulk_out_size =        256,
 191         .open =                 visor_open,
 192         .close =                visor_close,
 193         .throttle =             usb_serial_generic_throttle,
 194         .unthrottle =           usb_serial_generic_unthrottle,
 195         .probe =                visor_probe,
 196         .calc_num_ports =       clie_5_calc_num_ports,
 197         .read_int_callback =    visor_read_int_callback,
 198 };
 199
 200 /* device info for the Sony Clie OS version 3.5 */
 201 static struct usb_serial_driver clie_3_5_device = {
 202         .driver = {
 203                 .owner =        THIS_MODULE,
 204                 .name =         "clie_3.5",
 205         },
 206         .description =          "Sony Clie 3.5",
 207         .id_table =             clie_id_3_5_table,
 208         .num_ports =            1,
 209         .bulk_out_size =        256,
 210         .open =                 visor_open,
 211         .close =                visor_close,
 212         .throttle =             usb_serial_generic_throttle,
 213         .unthrottle =           usb_serial_generic_unthrottle,
 214         .attach =               clie_3_5_startup,
 215 };
 216
 217 static struct usb_serial_driver * const serial_drivers[] = {
 218         &handspring_device, &clie_5_device, &clie_3_5_device, NULL
 219 };
 220
 221 /******************************************************************************
 222  * Handspring Visor specific driver functions
 223  ******************************************************************************/
 224 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
 225 {
 226         int result = 0;
 227
 228         if (!port->read_urb) {
 229                 /* this is needed for some brain dead Sony devices */
 230                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 231                 return -ENODEV;
 232         }
 233
 234         /* Start reading from the device */
 235         result = usb_serial_generic_open(tty, port);
 236         if (result)
 237                 goto exit;
 238
 239         if (port->interrupt_in_urb) {
 240                 dev_dbg(&port->dev, "adding interrupt input for treo\n");
 241                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 242                 if (result)
 243                         dev_err(&port->dev,
 244                             "%s - failed submitting interrupt urb, error %d\n",
 245                                                         __func__, result);
 246         }
 247 exit:
 248         return result;
 249 }
 250
 251
 252 static void visor_close(struct usb_serial_port *port)
 253 {
 254         unsigned char *transfer_buffer;
 255
 256         usb_serial_generic_close(port);
 257         usb_kill_urb(port->interrupt_in_urb);
 258
 259         transfer_buffer = kmalloc(0x12, GFP_KERNEL);
 260         if (!transfer_buffer)
 261                 return;
 262         usb_control_msg(port->serial->dev,
 263                                          usb_rcvctrlpipe(port->serial->dev, 0),
 264                                          VISOR_CLOSE_NOTIFICATION, 0xc2,
 265                                          0x0000, 0x0000,
 266                                          transfer_buffer, 0x12, 300);
 267         kfree(transfer_buffer);
 268 }
 269
 270 static void visor_read_int_callback(struct urb *urb)
 271 {
 272         struct usb_serial_port *port = urb->context;
 273         int status = urb->status;
 274         int result;
 275
 276         switch (status) {
 277         case 0:
 278                 /* success */
 279                 break;
 280         case -ECONNRESET:
 281         case -ENOENT:
 282         case -ESHUTDOWN:
 283                 /* this urb is terminated, clean up */
 284                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 285                         __func__, status);
 286                 return;
 287         default:
 288                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 289                         __func__, status);
 290                 goto exit;
 291         }
 292
 293         /*
 294          * This information is still unknown what it can be used for.
 295          * If anyone has an idea, please let the author know...
 296          *
 297          * Rumor has it this endpoint is used to notify when data
 298          * is ready to be read from the bulk ones.
 299          */
 300         usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
 301                               urb->transfer_buffer);
 302
 303 exit:
 304         result = usb_submit_urb(urb, GFP_ATOMIC);
 305         if (result)
 306                 dev_err(&urb->dev->dev,
 307                                 "%s - Error %d submitting interrupt urb\n",
 308                                                         __func__, result);
 309 }
 310
 311 static int palm_os_3_probe(struct usb_serial *serial,
 312                                                 const struct usb_device_id *id)
 313 {
 314         struct device *dev = &serial->dev->dev;
 315         struct visor_connection_info *connection_info;
 316         unsigned char *transfer_buffer;
 317         char *string;
 318         int retval = 0;
 319         int i;
 320         int num_ports = 0;
 321
 322         transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
 323         if (!transfer_buffer)
 324                 return -ENOMEM;
 325
 326         /* send a get connection info request */
 327         retval = usb_control_msg(serial->dev,
 328                                   usb_rcvctrlpipe(serial->dev, 0),
 329                                   VISOR_GET_CONNECTION_INFORMATION,
 330                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 331                                   sizeof(*connection_info), 300);
 332         if (retval < 0) {
 333                 dev_err(dev, "%s - error %d getting connection information\n",
 334                         __func__, retval);
 335                 goto exit;
 336         }
 337
 338         if (retval == sizeof(*connection_info)) {
 339                         connection_info = (struct visor_connection_info *)
 340                                                         transfer_buffer;
 341
 342                 num_ports = le16_to_cpu(connection_info->num_ports);
 343                 for (i = 0; i < num_ports; ++i) {
 344                         switch (
 345                            connection_info->connections[i].port_function_id) {
 346                         case VISOR_FUNCTION_GENERIC:
 347                                 string = "Generic";
 348                                 break;
 349                         case VISOR_FUNCTION_DEBUGGER:
 350                                 string = "Debugger";
 351                                 break;
 352                         case VISOR_FUNCTION_HOTSYNC:
 353                                 string = "HotSync";
 354                                 break;
 355                         case VISOR_FUNCTION_CONSOLE:
 356                                 string = "Console";
 357                                 break;
 358                         case VISOR_FUNCTION_REMOTE_FILE_SYS:
 359                                 string = "Remote File System";
 360                                 break;
 361                         default:
 362                                 string = "unknown";
 363                                 break;
 364                         }
 365                         dev_info(dev, "%s: port %d, is for %s use\n",
 366                                 serial->type->description,
 367                                 connection_info->connections[i].port, string);
 368                 }
 369         }
 370         /*
 371         * Handle devices that report invalid stuff here.
 372         */
 373         if (num_ports == 0 || num_ports > 2) {
 374                 dev_warn(dev, "%s: No valid connect info available\n",
 375                         serial->type->description);
 376                 num_ports = 2;
 377         }
 378
 379         dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
 380                 num_ports);
 381
 382         /*
 383          * save off our num_ports info so that we can use it in the
 384          * calc_num_ports callback
 385          */
 386         usb_set_serial_data(serial, (void *)(long)num_ports);
 387
 388         /* ask for the number of bytes available, but ignore the
 389            response as it is broken */
 390         retval = usb_control_msg(serial->dev,
 391                                   usb_rcvctrlpipe(serial->dev, 0),
 392                                   VISOR_REQUEST_BYTES_AVAILABLE,
 393                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 394                                   0x02, 300);
 395         if (retval < 0)
 396                 dev_err(dev, "%s - error %d getting bytes available request\n",
 397                         __func__, retval);
 398         retval = 0;
 399
 400 exit:
 401         kfree(transfer_buffer);
 402
 403         return retval;
 404 }
 405
 406 static int palm_os_4_probe(struct usb_serial *serial,
 407                                                 const struct usb_device_id *id)
 408 {
 409         struct device *dev = &serial->dev->dev;
 410         struct palm_ext_connection_info *connection_info;
 411         unsigned char *transfer_buffer;
 412         int retval;
 413
 414         transfer_buffer =  kmalloc(sizeof(*connection_info), GFP_KERNEL);
 415         if (!transfer_buffer)
 416                 return -ENOMEM;
 417
 418         retval = usb_control_msg(serial->dev,
 419                                   usb_rcvctrlpipe(serial->dev, 0),
 420                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 421                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 422                                   sizeof(*connection_info), 300);
 423         if (retval < 0)
 424                 dev_err(dev, "%s - error %d getting connection info\n",
 425                         __func__, retval);
 426         else
 427                 usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
 428
 429         kfree(transfer_buffer);
 430         return 0;
 431 }
 432
 433
 434 static int visor_probe(struct usb_serial *serial,
 435                                         const struct usb_device_id *id)
 436 {
 437         int retval = 0;
 438         int (*startup)(struct usb_serial *serial,
 439                                         const struct usb_device_id *id);
 440
 441         /*
 442          * some Samsung Android phones in modem mode have the same ID
 443          * as SPH-I500, but they are ACM devices, so dont bind to them
 444          */
 445         if (id->idVendor == SAMSUNG_VENDOR_ID &&
 446                 id->idProduct == SAMSUNG_SPH_I500_ID &&
 447                 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
 448                 serial->dev->descriptor.bDeviceSubClass ==
 449                         USB_CDC_SUBCLASS_ACM)
 450                 return -ENODEV;
 451
 452         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 453                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 454                         serial->dev->actconfig->desc.bConfigurationValue);
 455                 return -ENODEV;
 456         }
 457
 458         if (id->driver_info) {
 459                 startup = (void *)id->driver_info;
 460                 retval = startup(serial, id);
 461         }
 462
 463         return retval;
 464 }
 465
 466 static int visor_calc_num_ports(struct usb_serial *serial,
 467                                         struct usb_serial_endpoints *epds)
 468 {
 469         unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor);
 470         int num_ports = (int)(long)(usb_get_serial_data(serial));
 471
 472         if (num_ports)
 473                 usb_set_serial_data(serial, NULL);
 474
 475         /*
 476          * Only swap the bulk endpoints for the Handspring devices with
 477          * interrupt in endpoints, which for now are the Treo devices.
 478          */
 479         if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) ||
 480                         epds->num_interrupt_in == 0)
 481                 goto out;
 482
 483         if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) {
 484                 dev_err(&serial->interface->dev, "missing endpoints\n");
 485                 return -ENODEV;
 486         }
 487
 488         /*
 489          * It appears that Treos and Kyoceras want to use the
 490          * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 491          * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 492          * Note that swapping the bulk out endpoints would break lots of
 493          * apps that want to communicate on the second port.
 494          */
 495         swap(epds->bulk_in[0], epds->bulk_in[1]);
 496         swap(epds->interrupt_in[0], epds->interrupt_in[1]);
 497 out:
 498         return num_ports;
 499 }
 500
 501 static int clie_5_calc_num_ports(struct usb_serial *serial,
 502                                         struct usb_serial_endpoints *epds)
 503 {
 504         /*
 505          * TH55 registers 2 ports.
 506          * Communication in from the UX50/TH55 uses the first bulk-in
 507          * endpoint, while communication out to the UX50/TH55 uses the second
 508          * bulk-out endpoint.
 509          */
 510
 511         /*
 512          * FIXME: Should we swap the descriptors instead of using the same
 513          *        bulk-out endpoint for both ports?
 514          */
 515         epds->bulk_out[0] = epds->bulk_out[1];
 516
 517         return serial->type->num_ports;
 518 }
 519
 520 static int clie_3_5_startup(struct usb_serial *serial)
 521 {
 522         struct device *dev = &serial->dev->dev;
 523         int result;
 524         u8 *data;
 525
 526         data = kmalloc(1, GFP_KERNEL);
 527         if (!data)
 528                 return -ENOMEM;
 529
 530         /*
 531          * Note that PEG-300 series devices expect the following two calls.
 532          */
 533
 534         /* get the config number */
 535         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 536                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 537                                   0, 0, data, 1, 3000);
 538         if (result < 0) {
 539                 dev_err(dev, "%s: get config number failed: %d\n",
 540                                                         __func__, result);
 541                 goto out;
 542         }
 543         if (result != 1) {
 544                 dev_err(dev, "%s: get config number bad return length: %d\n",
 545                                                         __func__, result);
 546                 result = -EIO;
 547                 goto out;
 548         }
 549
 550         /* get the interface number */
 551         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 552                                   USB_REQ_GET_INTERFACE,
 553                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 554                                   0, 0, data, 1, 3000);
 555         if (result < 0) {
 556                 dev_err(dev, "%s: get interface number failed: %d\n",
 557                                                         __func__, result);
 558                 goto out;
 559         }
 560         if (result != 1) {
 561                 dev_err(dev,
 562                         "%s: get interface number bad return length: %d\n",
 563                                                         __func__, result);
 564                 result = -EIO;
 565                 goto out;
 566         }
 567
 568         result = 0;
 569 out:
 570         kfree(data);
 571
 572         return result;
 573 }
 574
 575 module_usb_serial_driver(serial_drivers, id_table_combined);
 576
 577 MODULE_AUTHOR(DRIVER_AUTHOR);
 578 MODULE_DESCRIPTION(DRIVER_DESC);
 579 MODULE_LICENSE("GPL v2");