git.oblomov.eu Git - linux-2.6/blob - 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 modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  *
  13  * See Documentation/usb/usb-serial.txt for more information on using this driver
  14  *
  15  * (06/03/2003) Judd Montgomery <judd at jpilot.org>
  16  *     Added support for module parameter options for untested/unknown
  17  *     devices.
  18  *
  19  * (03/09/2003) gkh
  20  *      Added support for the Sony Clie NZ90V device.  Thanks to Martin Brachtl
  21  *      <brachtl@redgrep.cz> for the information.
  22  *
  23  * (03/05/2003) gkh
  24  *      Think Treo support is now working.
  25  *
  26  * (04/03/2002) gkh
  27  *      Added support for the Sony OS 4.1 devices.  Thanks to Hiroyuki ARAKI
  28  *      <hiro@zob.ne.jp> for the information.
  29  *
  30  * (03/27/2002) gkh
  31  *      Removed assumptions that port->tty was always valid (is not true
  32  *      for usb serial console devices.)
  33  *
  34  * (03/23/2002) gkh
  35  *      Added support for the Palm i705 device, thanks to Thomas Riemer
  36  *      <tom@netmech.com> for the information.
  37  *
  38  * (03/21/2002) gkh
  39  *      Added support for the Palm m130 device, thanks to Udo Eisenbarth
  40  *      <udo.eisenbarth@web.de> for the information.
  41  *
  42  * (02/27/2002) gkh
  43  *      Reworked the urb handling logic.  We have no more pool, but dynamically
  44  *      allocate the urb and the transfer buffer on the fly.  In testing this
  45  *      does not incure any measurable overhead.  This also relies on the fact
  46  *      that we have proper reference counting logic for urbs.
  47  *
  48  * (02/21/2002) SilaS
  49  *  Added initial support for the Palm m515 devices.
  50  *
  51  * (02/14/2002) gkh
  52  *      Added support for the Clie S-360 device.
  53  *
  54  * (12/18/2001) gkh
  55  *      Added better Clie support for 3.5 devices.  Thanks to Geoffrey Levand
  56  *      for the patch.
  57  *
  58  * (11/11/2001) gkh
  59  *      Added support for the m125 devices, and added check to prevent oopses
  60  *      for Clié devices that lie about the number of ports they have.
  61  *
  62  * (08/30/2001) gkh
  63  *      Added support for the Clie devices, both the 3.5 and 4.0 os versions.
  64  *      Many thanks to Daniel Burke, and Bryan Payne for helping with this.
  65  *
  66  * (08/23/2001) gkh
  67  *      fixed a few potential bugs pointed out by Oliver Neukum.
  68  *
  69  * (05/30/2001) gkh
  70  *      switched from using spinlock to a semaphore, which fixes lots of problems.
  71  *
  72  * (05/28/2000) gkh
  73  *      Added initial support for the Palm m500 and Palm m505 devices.
  74  *
  75  * (04/08/2001) gb
  76  *      Identify version on module load.
  77  *
  78  * (01/21/2000) gkh
  79  *      Added write_room and chars_in_buffer, as they were previously using the
  80  *      generic driver versions which is all wrong now that we are using an urb
  81  *      pool.  Thanks to Wolfgang Grandegger for pointing this out to me.
  82  *      Removed count assignment in the write function, which was not needed anymore
  83  *      either.  Thanks to Al Borchers for pointing this out.
  84  *
  85  * (12/12/2000) gkh
  86  *      Moved MOD_DEC to end of visor_close to be nicer, as the final write
  87  *      message can sleep.
  88  *
  89  * (11/12/2000) gkh
  90  *      Fixed bug with data being dropped on the floor by forcing tty->low_latency
  91  *      to be on.  Hopefully this fixes the OHCI issue!
  92  *
  93  * (11/01/2000) Adam J. Richter
  94  *      usb_device_id table support
  95  *
  96  * (10/05/2000) gkh
  97  *      Fixed bug with urb->dev not being set properly, now that the usb
  98  *      core needs it.
  99  *
 100  * (09/11/2000) gkh
 101  *      Got rid of always calling kmalloc for every urb we wrote out to the
 102  *      device.
 103  *      Added visor_read_callback so we can keep track of bytes in and out for
 104  *      those people who like to know the speed of their device.
 105  *      Removed DEBUG #ifdefs with call to usb_serial_debug_data
 106  *
 107  * (09/06/2000) gkh
 108  *      Fixed oops in visor_exit.  Need to uncomment usb_unlink_urb call _after_
 109  *      the host controller drivers set urb->dev = NULL when the urb is finished.
 110  *
 111  * (08/28/2000) gkh
 112  *      Added locks for SMP safeness.
 113  *
 114  * (08/08/2000) gkh
 115  *      Fixed endian problem in visor_startup.
 116  *      Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
 117  *      than once.
 118  *
 119  * (07/23/2000) gkh
 120  *      Added pool of write urbs to speed up transfers to the visor.
 121  *
 122  * (07/19/2000) gkh
 123  *      Added module_init and module_exit functions to handle the fact that this
 124  *      driver is a loadable module now.
 125  *
 126  * (07/03/2000) gkh
 127  *      Added visor_set_ioctl and visor_set_termios functions (they don't do much
 128  *      of anything, but are good for debugging.)
 129  *
 130  * (06/25/2000) gkh
 131  *      Fixed bug in visor_unthrottle that should help with the disconnect in PPP
 132  *      bug that people have been reporting.
 133  *
 134  * (06/23/2000) gkh
 135  *      Cleaned up debugging statements in a quest to find UHCI timeout bug.
 136  *
 137  * (04/27/2000) Ryan VanderBijl
 138  *      Fixed memory leak in visor_close
 139  *
 140  * (03/26/2000) gkh
 141  *      Split driver up into device specific pieces.
 142  *
 143  */
 144
 145 #include <linux/config.h>
 146 #include <linux/kernel.h>
 147 #include <linux/errno.h>
 148 #include <linux/init.h>
 149 #include <linux/slab.h>
 150 #include <linux/tty.h>
 151 #include <linux/tty_driver.h>
 152 #include <linux/tty_flip.h>
 153 #include <linux/module.h>
 154 #include <linux/moduleparam.h>
 155 #include <linux/spinlock.h>
 156 #include <asm/uaccess.h>
 157 #include <linux/usb.h>
 158 #include "usb-serial.h"
 159 #include "visor.h"
 160
 161 /*
 162  * Version Information
 163  */
 164 #define DRIVER_VERSION "v2.1"
 165 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
 166 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
 167
 168 /* function prototypes for a handspring visor */
 169 static int  visor_open          (struct usb_serial_port *port, struct file *filp);
 170 static void visor_close         (struct usb_serial_port *port, struct file *filp);
 171 static int  visor_write         (struct usb_serial_port *port, const unsigned char *buf, int count);
 172 static int  visor_write_room            (struct usb_serial_port *port);
 173 static int  visor_chars_in_buffer       (struct usb_serial_port *port);
 174 static void visor_throttle      (struct usb_serial_port *port);
 175 static void visor_unthrottle    (struct usb_serial_port *port);
 176 static int  visor_probe         (struct usb_serial *serial, const struct usb_device_id *id);
 177 static int  visor_calc_num_ports(struct usb_serial *serial);
 178 static void visor_shutdown      (struct usb_serial *serial);
 179 static int  visor_ioctl         (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
 180 static void visor_set_termios   (struct usb_serial_port *port, struct termios *old_termios);
 181 static void visor_write_bulk_callback   (struct urb *urb, struct pt_regs *regs);
 182 static void visor_read_bulk_callback    (struct urb *urb, struct pt_regs *regs);
 183 static void visor_read_int_callback     (struct urb *urb, struct pt_regs *regs);
 184 static int  clie_3_5_startup    (struct usb_serial *serial);
 185 static int  treo_attach         (struct usb_serial *serial);
 186 static int clie_5_attach (struct usb_serial *serial);
 187 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
 188 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
 189
 190 /* Parameters that may be passed into the module. */
 191 static int debug;
 192 static __u16 vendor;
 193 static __u16 product;
 194
 195 static struct usb_device_id id_table [] = {
 196         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
 197                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
 198         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
 199                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 200         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
 201                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 202         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
 203                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 204         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
 205                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 206         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
 207                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 208         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
 209                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 210         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
 211                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 212         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
 213                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 214         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
 215                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 216         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
 217                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 218         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
 219                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 220         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
 221                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 222         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
 223                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 224         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
 225                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 226         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
 227                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 228         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
 229                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 230         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
 231                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 232         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
 233                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 234         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
 235                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 236         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
 237                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 238         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
 239                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 240         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
 241                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 242         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 243                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 244         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 245                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 246         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 247                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 248         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 249                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 250         { },                                    /* optional parameter entry */
 251         { }                                     /* Terminating entry */
 252 };
 253
 254 static struct usb_device_id clie_id_5_table [] = {
 255         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 256                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 257         { },                                    /* optional parameter entry */
 258         { }                                     /* Terminating entry */
 259 };
 260
 261 static struct usb_device_id clie_id_3_5_table [] = {
 262         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 263         { }                                     /* Terminating entry */
 264 };
 265
 266 static struct usb_device_id id_table_combined [] = {
 267         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 268         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 269         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 270         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 271         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 272         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 273         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 274         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 275         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 276         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 277         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 278         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 279         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 280         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
 281         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 282         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 283         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 284         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 285         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 286         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 287         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 288         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 289         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 290         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 291         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 292         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 293         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 294         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 295         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 296         { },                                    /* optional parameter entry */
 297         { }                                     /* Terminating entry */
 298 };
 299
 300 MODULE_DEVICE_TABLE (usb, id_table_combined);
 301
 302 static struct usb_driver visor_driver = {
 303         .owner =        THIS_MODULE,
 304         .name =         "visor",
 305         .probe =        usb_serial_probe,
 306         .disconnect =   usb_serial_disconnect,
 307         .id_table =     id_table_combined,
 308 };
 309
 310 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
 311 static struct usb_serial_device_type handspring_device = {
 312         .owner =                THIS_MODULE,
 313         .name =                 "Handspring Visor / Palm OS",
 314         .short_name =           "visor",
 315         .id_table =             id_table,
 316         .num_interrupt_in =     NUM_DONT_CARE,
 317         .num_bulk_in =          2,
 318         .num_bulk_out =         2,
 319         .num_ports =            2,
 320         .open =                 visor_open,
 321         .close =                visor_close,
 322         .throttle =             visor_throttle,
 323         .unthrottle =           visor_unthrottle,
 324         .attach =               treo_attach,
 325         .probe =                visor_probe,
 326         .calc_num_ports =       visor_calc_num_ports,
 327         .shutdown =             visor_shutdown,
 328         .ioctl =                visor_ioctl,
 329         .set_termios =          visor_set_termios,
 330         .write =                visor_write,
 331         .write_room =           visor_write_room,
 332         .chars_in_buffer =      visor_chars_in_buffer,
 333         .write_bulk_callback =  visor_write_bulk_callback,
 334         .read_bulk_callback =   visor_read_bulk_callback,
 335         .read_int_callback =    visor_read_int_callback,
 336 };
 337
 338 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 339 static struct usb_serial_device_type clie_5_device = {
 340         .owner =                THIS_MODULE,
 341         .name =                 "Sony Clie 5.0",
 342         .short_name =           "clie_5",
 343         .id_table =             clie_id_5_table,
 344         .num_interrupt_in =     NUM_DONT_CARE,
 345         .num_bulk_in =          2,
 346         .num_bulk_out =         2,
 347         .num_ports =            2,
 348         .open =                 visor_open,
 349         .close =                visor_close,
 350         .throttle =             visor_throttle,
 351         .unthrottle =           visor_unthrottle,
 352         .attach =               clie_5_attach,
 353         .probe =                visor_probe,
 354         .calc_num_ports =       visor_calc_num_ports,
 355         .shutdown =             visor_shutdown,
 356         .ioctl =                visor_ioctl,
 357         .set_termios =          visor_set_termios,
 358         .write =                visor_write,
 359         .write_room =           visor_write_room,
 360         .chars_in_buffer =      visor_chars_in_buffer,
 361         .write_bulk_callback =  visor_write_bulk_callback,
 362         .read_bulk_callback =   visor_read_bulk_callback,
 363         .read_int_callback =    visor_read_int_callback,
 364 };
 365
 366 /* device info for the Sony Clie OS version 3.5 */
 367 static struct usb_serial_device_type clie_3_5_device = {
 368         .owner =                THIS_MODULE,
 369         .name =                 "Sony Clie 3.5",
 370         .short_name =           "clie_3.5",
 371         .id_table =             clie_id_3_5_table,
 372         .num_interrupt_in =     0,
 373         .num_bulk_in =          1,
 374         .num_bulk_out =         1,
 375         .num_ports =            1,
 376         .open =                 visor_open,
 377         .close =                visor_close,
 378         .throttle =             visor_throttle,
 379         .unthrottle =           visor_unthrottle,
 380         .attach =               clie_3_5_startup,
 381         .ioctl =                visor_ioctl,
 382         .set_termios =          visor_set_termios,
 383         .write =                visor_write,
 384         .write_room =           visor_write_room,
 385         .chars_in_buffer =      visor_chars_in_buffer,
 386         .write_bulk_callback =  visor_write_bulk_callback,
 387         .read_bulk_callback =   visor_read_bulk_callback,
 388 };
 389
 390 struct visor_private {
 391         spinlock_t lock;
 392         int bytes_in;
 393         int bytes_out;
 394         int outstanding_urbs;
 395         int throttled;
 396 };
 397
 398 /* number of outstanding urbs to prevent userspace DoS from happening */
 399 #define URB_UPPER_LIMIT 42
 400
 401 static int stats;
 402
 403 /******************************************************************************
 404  * Handspring Visor specific driver functions
 405  ******************************************************************************/
 406 static int visor_open (struct usb_serial_port *port, struct file *filp)
 407 {
 408         struct usb_serial *serial = port->serial;
 409         struct visor_private *priv = usb_get_serial_port_data(port);
 410         unsigned long flags;
 411         int result = 0;
 412
 413         dbg("%s - port %d", __FUNCTION__, port->number);
 414
 415         if (!port->read_urb) {
 416                 /* this is needed for some brain dead Sony devices */
 417                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 418                 return -ENODEV;
 419         }
 420
 421         spin_lock_irqsave(&priv->lock, flags);
 422         priv->bytes_in = 0;
 423         priv->bytes_out = 0;
 424         priv->outstanding_urbs = 0;
 425         priv->throttled = 0;
 426         spin_unlock_irqrestore(&priv->lock, flags);
 427
 428         /*
 429          * Force low_latency on so that our tty_push actually forces the data
 430          * through, otherwise it is scheduled, and with high data rates (like
 431          * with OHCI) data can get lost.
 432          */
 433         if (port->tty)
 434                 port->tty->low_latency = 1;
 435
 436         /* Start reading from the device */
 437         usb_fill_bulk_urb (port->read_urb, serial->dev,
 438                            usb_rcvbulkpipe (serial->dev,
 439                                             port->bulk_in_endpointAddress),
 440                            port->read_urb->transfer_buffer,
 441                            port->read_urb->transfer_buffer_length,
 442                            visor_read_bulk_callback, port);
 443         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 444         if (result) {
 445                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
 446                         __FUNCTION__, result);
 447                 goto exit;
 448         }
 449
 450         if (port->interrupt_in_urb) {
 451                 dbg("%s - adding interrupt input for treo", __FUNCTION__);
 452                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 453                 if (result)
 454                         dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
 455                                 __FUNCTION__, result);
 456         }
 457 exit:
 458         return result;
 459 }
 460
 461
 462 static void visor_close (struct usb_serial_port *port, struct file * filp)
 463 {
 464         struct visor_private *priv = usb_get_serial_port_data(port);
 465         unsigned char *transfer_buffer;
 466
 467         dbg("%s - port %d", __FUNCTION__, port->number);
 468
 469         /* shutdown our urbs */
 470         usb_kill_urb(port->read_urb);
 471         if (port->interrupt_in_urb)
 472                 usb_kill_urb(port->interrupt_in_urb);
 473
 474         /* Try to send shutdown message, if the device is gone, this will just fail. */
 475         transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
 476         if (transfer_buffer) {
 477                 usb_control_msg (port->serial->dev,
 478                                  usb_rcvctrlpipe(port->serial->dev, 0),
 479                                  VISOR_CLOSE_NOTIFICATION, 0xc2,
 480                                  0x0000, 0x0000,
 481                                  transfer_buffer, 0x12, 300);
 482                 kfree (transfer_buffer);
 483         }
 484
 485         if (stats)
 486                 dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
 487                          priv->bytes_in, priv->bytes_out);
 488 }
 489
 490
 491 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
 492 {
 493         struct visor_private *priv = usb_get_serial_port_data(port);
 494         struct usb_serial *serial = port->serial;
 495         struct urb *urb;
 496         unsigned char *buffer;
 497         unsigned long flags;
 498         int status;
 499
 500         dbg("%s - port %d", __FUNCTION__, port->number);
 501
 502         spin_lock_irqsave(&priv->lock, flags);
 503         if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 504                 spin_unlock_irqrestore(&priv->lock, flags);
 505                 dbg("%s - write limit hit\n", __FUNCTION__);
 506                 return 0;
 507         }
 508         spin_unlock_irqrestore(&priv->lock, flags);
 509
 510         buffer = kmalloc (count, GFP_ATOMIC);
 511         if (!buffer) {
 512                 dev_err(&port->dev, "out of memory\n");
 513                 return -ENOMEM;
 514         }
 515
 516         urb = usb_alloc_urb(0, GFP_ATOMIC);
 517         if (!urb) {
 518                 dev_err(&port->dev, "no more free urbs\n");
 519                 kfree (buffer);
 520                 return -ENOMEM;
 521         }
 522
 523         memcpy (buffer, buf, count);
 524
 525         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 526
 527         usb_fill_bulk_urb (urb, serial->dev,
 528                            usb_sndbulkpipe (serial->dev,
 529                                             port->bulk_out_endpointAddress),
 530                            buffer, count,
 531                            visor_write_bulk_callback, port);
 532
 533         /* send it down the pipe */
 534         status = usb_submit_urb(urb, GFP_ATOMIC);
 535         if (status) {
 536                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
 537                         __FUNCTION__, status);
 538                 count = status;
 539                 kfree (buffer);
 540         } else {
 541                 spin_lock_irqsave(&priv->lock, flags);
 542                 ++priv->outstanding_urbs;
 543                 priv->bytes_out += count;
 544                 spin_unlock_irqrestore(&priv->lock, flags);
 545         }
 546
 547         /* we are done with this urb, so let the host driver
 548          * really free it when it is finished with it */
 549         usb_free_urb (urb);
 550
 551         return count;
 552 }
 553
 554
 555 static int visor_write_room (struct usb_serial_port *port)
 556 {
 557         dbg("%s - port %d", __FUNCTION__, port->number);
 558
 559         /*
 560          * We really can take anything the user throws at us
 561          * but let's pick a nice big number to tell the tty
 562          * layer that we have lots of free space
 563          */
 564         return 2048;
 565 }
 566
 567
 568 static int visor_chars_in_buffer (struct usb_serial_port *port)
 569 {
 570         dbg("%s - port %d", __FUNCTION__, port->number);
 571
 572         /*
 573          * We can't really account for how much data we
 574          * have sent out, but hasn't made it through to the
 575          * device, so just tell the tty layer that everything
 576          * is flushed.
 577          */
 578         return 0;
 579 }
 580
 581
 582 static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 583 {
 584         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 585         struct visor_private *priv = usb_get_serial_port_data(port);
 586         unsigned long flags;
 587
 588         /* free up the transfer buffer, as usb_free_urb() does not do this */
 589         kfree (urb->transfer_buffer);
 590
 591         dbg("%s - port %d", __FUNCTION__, port->number);
 592
 593         if (urb->status)
 594                 dbg("%s - nonzero write bulk status received: %d",
 595                     __FUNCTION__, urb->status);
 596
 597         spin_lock_irqsave(&priv->lock, flags);
 598         --priv->outstanding_urbs;
 599         spin_unlock_irqrestore(&priv->lock, flags);
 600
 601         schedule_work(&port->work);
 602 }
 603
 604
 605 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 606 {
 607         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 608         struct visor_private *priv = usb_get_serial_port_data(port);
 609         unsigned char *data = urb->transfer_buffer;
 610         struct tty_struct *tty;
 611         unsigned long flags;
 612         int i;
 613         int throttled;
 614         int result;
 615
 616         dbg("%s - port %d", __FUNCTION__, port->number);
 617
 618         if (urb->status) {
 619                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 620                 return;
 621         }
 622
 623         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
 624
 625         tty = port->tty;
 626         if (tty && urb->actual_length) {
 627                 for (i = 0; i < urb->actual_length ; ++i) {
 628                         /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
 629                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 630                                 tty_flip_buffer_push(tty);
 631                         }
 632                         /* this doesn't actually push the data through unless tty->low_latency is set */
 633                         tty_insert_flip_char(tty, data[i], 0);
 634                 }
 635                 tty_flip_buffer_push(tty);
 636         }
 637         spin_lock_irqsave(&priv->lock, flags);
 638         priv->bytes_in += urb->actual_length;
 639         throttled = priv->throttled;
 640         spin_unlock_irqrestore(&priv->lock, flags);
 641
 642         /* Continue trying to always read if we should */
 643         if (!throttled) {
 644                 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
 645                                    usb_rcvbulkpipe(port->serial->dev,
 646                                                    port->bulk_in_endpointAddress),
 647                                    port->read_urb->transfer_buffer,
 648                                    port->read_urb->transfer_buffer_length,
 649                                    visor_read_bulk_callback, port);
 650                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 651                 if (result)
 652                         dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
 653         }
 654         return;
 655 }
 656
 657 static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
 658 {
 659         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 660         int result;
 661
 662         switch (urb->status) {
 663         case 0:
 664                 /* success */
 665                 break;
 666         case -ECONNRESET:
 667         case -ENOENT:
 668         case -ESHUTDOWN:
 669                 /* this urb is terminated, clean up */
 670                 dbg("%s - urb shutting down with status: %d",
 671                     __FUNCTION__, urb->status);
 672                 return;
 673         default:
 674                 dbg("%s - nonzero urb status received: %d",
 675                     __FUNCTION__, urb->status);
 676                 goto exit;
 677         }
 678
 679         /*
 680          * This information is still unknown what it can be used for.
 681          * If anyone has an idea, please let the author know...
 682          *
 683          * Rumor has it this endpoint is used to notify when data
 684          * is ready to be read from the bulk ones.
 685          */
 686         usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
 687                               urb->actual_length, urb->transfer_buffer);
 688
 689 exit:
 690         result = usb_submit_urb (urb, GFP_ATOMIC);
 691         if (result)
 692                 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
 693                         __FUNCTION__, result);
 694 }
 695
 696 static void visor_throttle (struct usb_serial_port *port)
 697 {
 698         struct visor_private *priv = usb_get_serial_port_data(port);
 699         unsigned long flags;
 700
 701         dbg("%s - port %d", __FUNCTION__, port->number);
 702         spin_lock_irqsave(&priv->lock, flags);
 703         priv->throttled = 1;
 704         spin_unlock_irqrestore(&priv->lock, flags);
 705 }
 706
 707
 708 static void visor_unthrottle (struct usb_serial_port *port)
 709 {
 710         struct visor_private *priv = usb_get_serial_port_data(port);
 711         unsigned long flags;
 712         int result;
 713
 714         dbg("%s - port %d", __FUNCTION__, port->number);
 715         spin_lock_irqsave(&priv->lock, flags);
 716         priv->throttled = 0;
 717         spin_unlock_irqrestore(&priv->lock, flags);
 718
 719         port->read_urb->dev = port->serial->dev;
 720         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 721         if (result)
 722                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
 723 }
 724
 725 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
 726 {
 727         struct device *dev = &serial->dev->dev;
 728         struct visor_connection_info *connection_info;
 729         unsigned char *transfer_buffer;
 730         char *string;
 731         int retval = 0;
 732         int i;
 733         int num_ports = 0;
 734
 735         dbg("%s", __FUNCTION__);
 736
 737         transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
 738         if (!transfer_buffer) {
 739                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 740                         sizeof(*connection_info));
 741                 return -ENOMEM;
 742         }
 743
 744         /* send a get connection info request */
 745         retval = usb_control_msg (serial->dev,
 746                                   usb_rcvctrlpipe(serial->dev, 0),
 747                                   VISOR_GET_CONNECTION_INFORMATION,
 748                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 749                                   sizeof(*connection_info), 300);
 750         if (retval < 0) {
 751                 dev_err(dev, "%s - error %d getting connection information\n",
 752                         __FUNCTION__, retval);
 753                 goto exit;
 754         }
 755
 756         if (retval == sizeof(*connection_info)) {
 757                 connection_info = (struct visor_connection_info *)transfer_buffer;
 758
 759                 num_ports = le16_to_cpu(connection_info->num_ports);
 760                 for (i = 0; i < num_ports; ++i) {
 761                         switch (connection_info->connections[i].port_function_id) {
 762                                 case VISOR_FUNCTION_GENERIC:
 763                                         string = "Generic";
 764                                         break;
 765                                 case VISOR_FUNCTION_DEBUGGER:
 766                                         string = "Debugger";
 767                                         break;
 768                                 case VISOR_FUNCTION_HOTSYNC:
 769                                         string = "HotSync";
 770                                         break;
 771                                 case VISOR_FUNCTION_CONSOLE:
 772                                         string = "Console";
 773                                         break;
 774                                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 775                                         string = "Remote File System";
 776                                         break;
 777                                 default:
 778                                         string = "unknown";
 779                                         break;
 780                         }
 781                         dev_info(dev, "%s: port %d, is for %s use\n",
 782                                 serial->type->name,
 783                                 connection_info->connections[i].port, string);
 784                 }
 785         }
 786         /*
 787         * Handle devices that report invalid stuff here.
 788         */
 789         if (num_ports == 0 || num_ports > 2) {
 790                 dev_warn (dev, "%s: No valid connect info available\n",
 791                         serial->type->name);
 792                 num_ports = 2;
 793         }
 794
 795         dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
 796                 num_ports);
 797
 798         /*
 799          * save off our num_ports info so that we can use it in the
 800          * calc_num_ports callback
 801          */
 802         usb_set_serial_data(serial, (void *)(long)num_ports);
 803
 804         /* ask for the number of bytes available, but ignore the response as it is broken */
 805         retval = usb_control_msg (serial->dev,
 806                                   usb_rcvctrlpipe(serial->dev, 0),
 807                                   VISOR_REQUEST_BYTES_AVAILABLE,
 808                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 809                                   0x02, 300);
 810         if (retval < 0)
 811                 dev_err(dev, "%s - error %d getting bytes available request\n",
 812                         __FUNCTION__, retval);
 813         retval = 0;
 814
 815 exit:
 816         kfree (transfer_buffer);
 817
 818         return retval;
 819 }
 820
 821 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
 822 {
 823         struct device *dev = &serial->dev->dev;
 824         struct palm_ext_connection_info *connection_info;
 825         unsigned char *transfer_buffer;
 826         int retval;
 827
 828         dbg("%s", __FUNCTION__);
 829
 830         transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
 831         if (!transfer_buffer) {
 832                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 833                         sizeof(*connection_info));
 834                 return -ENOMEM;
 835         }
 836
 837         retval = usb_control_msg (serial->dev,
 838                                   usb_rcvctrlpipe(serial->dev, 0),
 839                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 840                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 841                                   sizeof (*connection_info), 300);
 842         if (retval < 0)
 843                 dev_err(dev, "%s - error %d getting connection info\n",
 844                         __FUNCTION__, retval);
 845         else
 846                 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
 847                                       retval, transfer_buffer);
 848
 849         kfree (transfer_buffer);
 850         return 0;
 851 }
 852
 853
 854 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
 855 {
 856         int retval = 0;
 857         int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
 858
 859         dbg("%s", __FUNCTION__);
 860
 861         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 862                 err("active config #%d != 1 ??",
 863                         serial->dev->actconfig->desc.bConfigurationValue);
 864                 return -ENODEV;
 865         }
 866
 867         if (id->driver_info) {
 868                 startup = (void *)id->driver_info;
 869                 retval = startup(serial, id);
 870         }
 871
 872         return retval;
 873 }
 874
 875 static int visor_calc_num_ports (struct usb_serial *serial)
 876 {
 877         int num_ports = (int)(long)(usb_get_serial_data(serial));
 878
 879         if (num_ports)
 880                 usb_set_serial_data(serial, NULL);
 881
 882         return num_ports;
 883 }
 884
 885 static int generic_startup(struct usb_serial *serial)
 886 {
 887         struct visor_private *priv;
 888         int i;
 889
 890         for (i = 0; i < serial->num_ports; ++i) {
 891                 priv = kmalloc (sizeof(*priv), GFP_KERNEL);
 892                 if (!priv)
 893                         return -ENOMEM;
 894                 memset (priv, 0x00, sizeof(*priv));
 895                 spin_lock_init(&priv->lock);
 896                 usb_set_serial_port_data(serial->port[i], priv);
 897         }
 898         return 0;
 899 }
 900
 901 static int clie_3_5_startup (struct usb_serial *serial)
 902 {
 903         struct device *dev = &serial->dev->dev;
 904         int result;
 905         u8 data;
 906
 907         dbg("%s", __FUNCTION__);
 908
 909         /*
 910          * Note that PEG-300 series devices expect the following two calls.
 911          */
 912
 913         /* get the config number */
 914         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 915                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 916                                   0, 0, &data, 1, 3000);
 917         if (result < 0) {
 918                 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
 919                 return result;
 920         }
 921         if (result != 1) {
 922                 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
 923                 return -EIO;
 924         }
 925
 926         /* get the interface number */
 927         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 928                                   USB_REQ_GET_INTERFACE,
 929                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 930                                   0, 0, &data, 1, 3000);
 931         if (result < 0) {
 932                 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
 933                 return result;
 934         }
 935         if (result != 1) {
 936                 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
 937                 return -EIO;
 938         }
 939
 940         return generic_startup(serial);
 941 }
 942
 943 static int treo_attach (struct usb_serial *serial)
 944 {
 945         struct usb_serial_port *swap_port;
 946
 947         /* Only do this endpoint hack for the Handspring devices with
 948          * interrupt in endpoints, which for now are the Treo devices. */
 949         if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
 950               (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
 951             (serial->num_interrupt_in == 0))
 952                 goto generic_startup;
 953
 954         dbg("%s", __FUNCTION__);
 955
 956         /*
 957         * It appears that Treos and Kyoceras want to use the
 958         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 959         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 960         * Note that swapping the bulk out endpoints would break lots of
 961         * apps that want to communicate on the second port.
 962         */
 963 #define COPY_PORT(dest, src)                                            \
 964         dest->read_urb = src->read_urb;                                 \
 965         dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;   \
 966         dest->bulk_in_buffer = src->bulk_in_buffer;                     \
 967         dest->interrupt_in_urb = src->interrupt_in_urb;                 \
 968         dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
 969         dest->interrupt_in_buffer = src->interrupt_in_buffer;
 970
 971         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 972         if (!swap_port)
 973                 return -ENOMEM;
 974         COPY_PORT(swap_port, serial->port[0]);
 975         COPY_PORT(serial->port[0], serial->port[1]);
 976         COPY_PORT(serial->port[1], swap_port);
 977         kfree(swap_port);
 978
 979 generic_startup:
 980         return generic_startup(serial);
 981 }
 982
 983 static int clie_5_attach (struct usb_serial *serial)
 984 {
 985         dbg("%s", __FUNCTION__);
 986
 987         /* TH55 registers 2 ports.
 988            Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
 989            Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
 990
 991            Lets do a quick and dirty mapping
 992          */
 993
 994         /* some sanity check */
 995         if (serial->num_ports < 2)
 996                 return -1;
 997
 998         /* port 0 now uses the modified endpoint Address */
 999         serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
1000
1001         return generic_startup(serial);
1002 }
1003
1004 static void visor_shutdown (struct usb_serial *serial)
1005 {
1006         dbg("%s", __FUNCTION__);
1007 }
1008
1009 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
1010 {
1011         dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
1012
1013         return -ENOIOCTLCMD;
1014 }
1015
1016
1017 /* This function is all nice and good, but we don't change anything based on it :) */
1018 static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1019 {
1020         unsigned int cflag;
1021
1022         dbg("%s - port %d", __FUNCTION__, port->number);
1023
1024         if ((!port->tty) || (!port->tty->termios)) {
1025                 dbg("%s - no tty structures", __FUNCTION__);
1026                 return;
1027         }
1028
1029         cflag = port->tty->termios->c_cflag;
1030         /* check that they really want us to change something */
1031         if (old_termios) {
1032                 if ((cflag == old_termios->c_cflag) &&
1033                     (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1034                         dbg("%s - nothing to change...", __FUNCTION__);
1035                         return;
1036                 }
1037         }
1038
1039         /* get the byte size */
1040         switch (cflag & CSIZE) {
1041                 case CS5:       dbg("%s - data bits = 5", __FUNCTION__);   break;
1042                 case CS6:       dbg("%s - data bits = 6", __FUNCTION__);   break;
1043                 case CS7:       dbg("%s - data bits = 7", __FUNCTION__);   break;
1044                 default:
1045                 case CS8:       dbg("%s - data bits = 8", __FUNCTION__);   break;
1046         }
1047
1048         /* determine the parity */
1049         if (cflag & PARENB)
1050                 if (cflag & PARODD)
1051                         dbg("%s - parity = odd", __FUNCTION__);
1052                 else
1053                         dbg("%s - parity = even", __FUNCTION__);
1054         else
1055                 dbg("%s - parity = none", __FUNCTION__);
1056
1057         /* figure out the stop bits requested */
1058         if (cflag & CSTOPB)
1059                 dbg("%s - stop bits = 2", __FUNCTION__);
1060         else
1061                 dbg("%s - stop bits = 1", __FUNCTION__);
1062
1063
1064         /* figure out the flow control settings */
1065         if (cflag & CRTSCTS)
1066                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
1067         else
1068                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
1069
1070         /* determine software flow control */
1071         if (I_IXOFF(port->tty))
1072                 dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
1073                     __FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
1074         else
1075                 dbg("%s - XON/XOFF is disabled", __FUNCTION__);
1076
1077         /* get the baud rate wanted */
1078         dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
1079
1080         return;
1081 }
1082
1083
1084 static int __init visor_init (void)
1085 {
1086         int i, retval;
1087         /* Only if parameters were passed to us */
1088         if ((vendor>0) && (product>0)) {
1089                 struct usb_device_id usb_dev_temp[]=
1090                         {{USB_DEVICE(vendor, product),
1091                         .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
1092
1093                 /* Find the last entry in id_table */
1094                 for (i=0; ; i++) {
1095                         if (id_table[i].idVendor==0) {
1096                                 id_table[i] = usb_dev_temp[0];
1097                                 break;
1098                         }
1099                 }
1100                 /* Find the last entry in id_table_combined */
1101                 for (i=0; ; i++) {
1102                         if (id_table_combined[i].idVendor==0) {
1103                                 id_table_combined[i] = usb_dev_temp[0];
1104                                 break;
1105                         }
1106                 }
1107                 info("Untested USB device specified at time of module insertion");
1108                 info("Warning: This is not guaranteed to work");
1109                 info("Using a newer kernel is preferred to this method");
1110                 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
1111                         vendor, product);
1112         }
1113         retval = usb_serial_register(&handspring_device);
1114         if (retval)
1115                 goto failed_handspring_register;
1116         retval = usb_serial_register(&clie_3_5_device);
1117         if (retval)
1118                 goto failed_clie_3_5_register;
1119         retval = usb_serial_register(&clie_5_device);
1120         if (retval)
1121                 goto failed_clie_5_register;
1122         retval = usb_register(&visor_driver);
1123         if (retval)
1124                 goto failed_usb_register;
1125         info(DRIVER_DESC " " DRIVER_VERSION);
1126
1127         return 0;
1128 failed_usb_register:
1129         usb_serial_deregister(&clie_5_device);
1130 failed_clie_5_register:
1131         usb_serial_deregister(&clie_3_5_device);
1132 failed_clie_3_5_register:
1133         usb_serial_deregister(&handspring_device);
1134 failed_handspring_register:
1135         return retval;
1136 }
1137
1138
1139 static void __exit visor_exit (void)
1140 {
1141         usb_deregister (&visor_driver);
1142         usb_serial_deregister (&handspring_device);
1143         usb_serial_deregister (&clie_3_5_device);
1144         usb_serial_deregister (&clie_5_device);
1145 }
1146
1147
1148 module_init(visor_init);
1149 module_exit(visor_exit);
1150
1151 MODULE_AUTHOR( DRIVER_AUTHOR );
1152 MODULE_DESCRIPTION( DRIVER_DESC );
1153 MODULE_LICENSE("GPL");
1154
1155 module_param(debug, bool, S_IRUGO | S_IWUSR);
1156 MODULE_PARM_DESC(debug, "Debug enabled or not");
1157 module_param(stats, bool, S_IRUGO | S_IWUSR);
1158 MODULE_PARM_DESC(stats, "Enables statistics or not");
1159
1160 module_param(vendor, ushort, 0);
1161 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1162 module_param(product, ushort, 0);
1163 MODULE_PARM_DESC(product, "User specified product ID");
1164