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_TUNGSTEN_Z_ID),
 219                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 220         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
 221                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 222         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
 223                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 224         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
 225                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 226         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
 227                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 228         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
 229                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 230         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
 231                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 232         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
 233                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 234         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
 235                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 236         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
 237                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 238         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
 239                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 240         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
 241                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 242         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
 243                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 244         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
 245                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 246         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
 247                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 248         { },                                    /* optional parameter entry */
 249         { }                                     /* Terminating entry */
 250 };
 251
 252 static struct usb_device_id clie_id_5_table [] = {
 253         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 254                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 255         { },                                    /* optional parameter entry */
 256         { }                                     /* Terminating entry */
 257 };
 258
 259 static struct usb_device_id clie_id_3_5_table [] = {
 260         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 261         { }                                     /* Terminating entry */
 262 };
 263
 264 static struct usb_device_id id_table_combined [] = {
 265         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 266         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 267         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 268         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 269         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 270         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 271         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 272         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 273         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 274         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 275         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 276         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 277         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
 278         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 279         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 280         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 281         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 282         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 283         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 284         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 285         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 286         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 287         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 288         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 289         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 290         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 291         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 292         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
 293         { },                                    /* optional parameter entry */
 294         { }                                     /* Terminating entry */
 295 };
 296
 297 MODULE_DEVICE_TABLE (usb, id_table_combined);
 298
 299 static struct usb_driver visor_driver = {
 300         .owner =        THIS_MODULE,
 301         .name =         "visor",
 302         .probe =        usb_serial_probe,
 303         .disconnect =   usb_serial_disconnect,
 304         .id_table =     id_table_combined,
 305 };
 306
 307 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
 308 static struct usb_serial_device_type handspring_device = {
 309         .owner =                THIS_MODULE,
 310         .name =                 "Handspring Visor / Palm OS",
 311         .short_name =           "visor",
 312         .id_table =             id_table,
 313         .num_interrupt_in =     NUM_DONT_CARE,
 314         .num_bulk_in =          2,
 315         .num_bulk_out =         2,
 316         .num_ports =            2,
 317         .open =                 visor_open,
 318         .close =                visor_close,
 319         .throttle =             visor_throttle,
 320         .unthrottle =           visor_unthrottle,
 321         .attach =               treo_attach,
 322         .probe =                visor_probe,
 323         .calc_num_ports =       visor_calc_num_ports,
 324         .shutdown =             visor_shutdown,
 325         .ioctl =                visor_ioctl,
 326         .set_termios =          visor_set_termios,
 327         .write =                visor_write,
 328         .write_room =           visor_write_room,
 329         .chars_in_buffer =      visor_chars_in_buffer,
 330         .write_bulk_callback =  visor_write_bulk_callback,
 331         .read_bulk_callback =   visor_read_bulk_callback,
 332         .read_int_callback =    visor_read_int_callback,
 333 };
 334
 335 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 336 static struct usb_serial_device_type clie_5_device = {
 337         .owner =                THIS_MODULE,
 338         .name =                 "Sony Clie 5.0",
 339         .short_name =           "clie_5",
 340         .id_table =             clie_id_5_table,
 341         .num_interrupt_in =     NUM_DONT_CARE,
 342         .num_bulk_in =          2,
 343         .num_bulk_out =         2,
 344         .num_ports =            2,
 345         .open =                 visor_open,
 346         .close =                visor_close,
 347         .throttle =             visor_throttle,
 348         .unthrottle =           visor_unthrottle,
 349         .attach =               clie_5_attach,
 350         .probe =                visor_probe,
 351         .calc_num_ports =       visor_calc_num_ports,
 352         .shutdown =             visor_shutdown,
 353         .ioctl =                visor_ioctl,
 354         .set_termios =          visor_set_termios,
 355         .write =                visor_write,
 356         .write_room =           visor_write_room,
 357         .chars_in_buffer =      visor_chars_in_buffer,
 358         .write_bulk_callback =  visor_write_bulk_callback,
 359         .read_bulk_callback =   visor_read_bulk_callback,
 360         .read_int_callback =    visor_read_int_callback,
 361 };
 362
 363 /* device info for the Sony Clie OS version 3.5 */
 364 static struct usb_serial_device_type clie_3_5_device = {
 365         .owner =                THIS_MODULE,
 366         .name =                 "Sony Clie 3.5",
 367         .short_name =           "clie_3.5",
 368         .id_table =             clie_id_3_5_table,
 369         .num_interrupt_in =     0,
 370         .num_bulk_in =          1,
 371         .num_bulk_out =         1,
 372         .num_ports =            1,
 373         .open =                 visor_open,
 374         .close =                visor_close,
 375         .throttle =             visor_throttle,
 376         .unthrottle =           visor_unthrottle,
 377         .attach =               clie_3_5_startup,
 378         .ioctl =                visor_ioctl,
 379         .set_termios =          visor_set_termios,
 380         .write =                visor_write,
 381         .write_room =           visor_write_room,
 382         .chars_in_buffer =      visor_chars_in_buffer,
 383         .write_bulk_callback =  visor_write_bulk_callback,
 384         .read_bulk_callback =   visor_read_bulk_callback,
 385 };
 386
 387 struct visor_private {
 388         spinlock_t lock;
 389         int bytes_in;
 390         int bytes_out;
 391         int outstanding_urbs;
 392         int throttled;
 393 };
 394
 395 /* number of outstanding urbs to prevent userspace DoS from happening */
 396 #define URB_UPPER_LIMIT 42
 397
 398 static int stats;
 399
 400 /******************************************************************************
 401  * Handspring Visor specific driver functions
 402  ******************************************************************************/
 403 static int visor_open (struct usb_serial_port *port, struct file *filp)
 404 {
 405         struct usb_serial *serial = port->serial;
 406         struct visor_private *priv = usb_get_serial_port_data(port);
 407         unsigned long flags;
 408         int result = 0;
 409
 410         dbg("%s - port %d", __FUNCTION__, port->number);
 411
 412         if (!port->read_urb) {
 413                 /* this is needed for some brain dead Sony devices */
 414                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 415                 return -ENODEV;
 416         }
 417
 418         spin_lock_irqsave(&priv->lock, flags);
 419         priv->bytes_in = 0;
 420         priv->bytes_out = 0;
 421         priv->outstanding_urbs = 0;
 422         priv->throttled = 0;
 423         spin_unlock_irqrestore(&priv->lock, flags);
 424
 425         /*
 426          * Force low_latency on so that our tty_push actually forces the data
 427          * through, otherwise it is scheduled, and with high data rates (like
 428          * with OHCI) data can get lost.
 429          */
 430         if (port->tty)
 431                 port->tty->low_latency = 1;
 432
 433         /* Start reading from the device */
 434         usb_fill_bulk_urb (port->read_urb, serial->dev,
 435                            usb_rcvbulkpipe (serial->dev,
 436                                             port->bulk_in_endpointAddress),
 437                            port->read_urb->transfer_buffer,
 438                            port->read_urb->transfer_buffer_length,
 439                            visor_read_bulk_callback, port);
 440         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 441         if (result) {
 442                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
 443                         __FUNCTION__, result);
 444                 goto exit;
 445         }
 446
 447         if (port->interrupt_in_urb) {
 448                 dbg("%s - adding interrupt input for treo", __FUNCTION__);
 449                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 450                 if (result)
 451                         dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
 452                                 __FUNCTION__, result);
 453         }
 454 exit:
 455         return result;
 456 }
 457
 458
 459 static void visor_close (struct usb_serial_port *port, struct file * filp)
 460 {
 461         struct visor_private *priv = usb_get_serial_port_data(port);
 462         unsigned char *transfer_buffer;
 463
 464         dbg("%s - port %d", __FUNCTION__, port->number);
 465
 466         /* shutdown our urbs */
 467         usb_kill_urb(port->read_urb);
 468         if (port->interrupt_in_urb)
 469                 usb_kill_urb(port->interrupt_in_urb);
 470
 471         /* Try to send shutdown message, if the device is gone, this will just fail. */
 472         transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
 473         if (transfer_buffer) {
 474                 usb_control_msg (port->serial->dev,
 475                                  usb_rcvctrlpipe(port->serial->dev, 0),
 476                                  VISOR_CLOSE_NOTIFICATION, 0xc2,
 477                                  0x0000, 0x0000,
 478                                  transfer_buffer, 0x12, 300);
 479                 kfree (transfer_buffer);
 480         }
 481
 482         if (stats)
 483                 dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
 484                          priv->bytes_in, priv->bytes_out);
 485 }
 486
 487
 488 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
 489 {
 490         struct visor_private *priv = usb_get_serial_port_data(port);
 491         struct usb_serial *serial = port->serial;
 492         struct urb *urb;
 493         unsigned char *buffer;
 494         unsigned long flags;
 495         int status;
 496
 497         dbg("%s - port %d", __FUNCTION__, port->number);
 498
 499         spin_lock_irqsave(&priv->lock, flags);
 500         if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 501                 spin_unlock_irqrestore(&priv->lock, flags);
 502                 dbg("%s - write limit hit\n", __FUNCTION__);
 503                 return 0;
 504         }
 505         spin_unlock_irqrestore(&priv->lock, flags);
 506
 507         buffer = kmalloc (count, GFP_ATOMIC);
 508         if (!buffer) {
 509                 dev_err(&port->dev, "out of memory\n");
 510                 return -ENOMEM;
 511         }
 512
 513         urb = usb_alloc_urb(0, GFP_ATOMIC);
 514         if (!urb) {
 515                 dev_err(&port->dev, "no more free urbs\n");
 516                 kfree (buffer);
 517                 return -ENOMEM;
 518         }
 519
 520         memcpy (buffer, buf, count);
 521
 522         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 523
 524         usb_fill_bulk_urb (urb, serial->dev,
 525                            usb_sndbulkpipe (serial->dev,
 526                                             port->bulk_out_endpointAddress),
 527                            buffer, count,
 528                            visor_write_bulk_callback, port);
 529
 530         /* send it down the pipe */
 531         status = usb_submit_urb(urb, GFP_ATOMIC);
 532         if (status) {
 533                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
 534                         __FUNCTION__, status);
 535                 count = status;
 536                 kfree (buffer);
 537         } else {
 538                 spin_lock_irqsave(&priv->lock, flags);
 539                 ++priv->outstanding_urbs;
 540                 priv->bytes_out += count;
 541                 spin_unlock_irqrestore(&priv->lock, flags);
 542         }
 543
 544         /* we are done with this urb, so let the host driver
 545          * really free it when it is finished with it */
 546         usb_free_urb (urb);
 547
 548         return count;
 549 }
 550
 551
 552 static int visor_write_room (struct usb_serial_port *port)
 553 {
 554         dbg("%s - port %d", __FUNCTION__, port->number);
 555
 556         /*
 557          * We really can take anything the user throws at us
 558          * but let's pick a nice big number to tell the tty
 559          * layer that we have lots of free space
 560          */
 561         return 2048;
 562 }
 563
 564
 565 static int visor_chars_in_buffer (struct usb_serial_port *port)
 566 {
 567         dbg("%s - port %d", __FUNCTION__, port->number);
 568
 569         /*
 570          * We can't really account for how much data we
 571          * have sent out, but hasn't made it through to the
 572          * device, so just tell the tty layer that everything
 573          * is flushed.
 574          */
 575         return 0;
 576 }
 577
 578
 579 static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 580 {
 581         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 582         struct visor_private *priv = usb_get_serial_port_data(port);
 583         unsigned long flags;
 584
 585         /* free up the transfer buffer, as usb_free_urb() does not do this */
 586         kfree (urb->transfer_buffer);
 587
 588         dbg("%s - port %d", __FUNCTION__, port->number);
 589
 590         if (urb->status)
 591                 dbg("%s - nonzero write bulk status received: %d",
 592                     __FUNCTION__, urb->status);
 593
 594         spin_lock_irqsave(&priv->lock, flags);
 595         --priv->outstanding_urbs;
 596         spin_unlock_irqrestore(&priv->lock, flags);
 597
 598         schedule_work(&port->work);
 599 }
 600
 601
 602 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 603 {
 604         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 605         struct visor_private *priv = usb_get_serial_port_data(port);
 606         unsigned char *data = urb->transfer_buffer;
 607         struct tty_struct *tty;
 608         unsigned long flags;
 609         int i;
 610         int throttled;
 611         int result;
 612
 613         dbg("%s - port %d", __FUNCTION__, port->number);
 614
 615         if (urb->status) {
 616                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 617                 return;
 618         }
 619
 620         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
 621
 622         tty = port->tty;
 623         if (tty && urb->actual_length) {
 624                 for (i = 0; i < urb->actual_length ; ++i) {
 625                         /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
 626                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 627                                 tty_flip_buffer_push(tty);
 628                         }
 629                         /* this doesn't actually push the data through unless tty->low_latency is set */
 630                         tty_insert_flip_char(tty, data[i], 0);
 631                 }
 632                 tty_flip_buffer_push(tty);
 633         }
 634         spin_lock_irqsave(&priv->lock, flags);
 635         priv->bytes_in += urb->actual_length;
 636         throttled = priv->throttled;
 637         spin_unlock_irqrestore(&priv->lock, flags);
 638
 639         /* Continue trying to always read if we should */
 640         if (!throttled) {
 641                 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
 642                                    usb_rcvbulkpipe(port->serial->dev,
 643                                                    port->bulk_in_endpointAddress),
 644                                    port->read_urb->transfer_buffer,
 645                                    port->read_urb->transfer_buffer_length,
 646                                    visor_read_bulk_callback, port);
 647                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 648                 if (result)
 649                         dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
 650         }
 651         return;
 652 }
 653
 654 static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
 655 {
 656         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 657         int result;
 658
 659         switch (urb->status) {
 660         case 0:
 661                 /* success */
 662                 break;
 663         case -ECONNRESET:
 664         case -ENOENT:
 665         case -ESHUTDOWN:
 666                 /* this urb is terminated, clean up */
 667                 dbg("%s - urb shutting down with status: %d",
 668                     __FUNCTION__, urb->status);
 669                 return;
 670         default:
 671                 dbg("%s - nonzero urb status received: %d",
 672                     __FUNCTION__, urb->status);
 673                 goto exit;
 674         }
 675
 676         /*
 677          * This information is still unknown what it can be used for.
 678          * If anyone has an idea, please let the author know...
 679          *
 680          * Rumor has it this endpoint is used to notify when data
 681          * is ready to be read from the bulk ones.
 682          */
 683         usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
 684                               urb->actual_length, urb->transfer_buffer);
 685
 686 exit:
 687         result = usb_submit_urb (urb, GFP_ATOMIC);
 688         if (result)
 689                 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
 690                         __FUNCTION__, result);
 691 }
 692
 693 static void visor_throttle (struct usb_serial_port *port)
 694 {
 695         struct visor_private *priv = usb_get_serial_port_data(port);
 696         unsigned long flags;
 697
 698         dbg("%s - port %d", __FUNCTION__, port->number);
 699         spin_lock_irqsave(&priv->lock, flags);
 700         priv->throttled = 1;
 701         spin_unlock_irqrestore(&priv->lock, flags);
 702 }
 703
 704
 705 static void visor_unthrottle (struct usb_serial_port *port)
 706 {
 707         struct visor_private *priv = usb_get_serial_port_data(port);
 708         unsigned long flags;
 709         int result;
 710
 711         dbg("%s - port %d", __FUNCTION__, port->number);
 712         spin_lock_irqsave(&priv->lock, flags);
 713         priv->throttled = 0;
 714         spin_unlock_irqrestore(&priv->lock, flags);
 715
 716         port->read_urb->dev = port->serial->dev;
 717         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 718         if (result)
 719                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
 720 }
 721
 722 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
 723 {
 724         struct device *dev = &serial->dev->dev;
 725         struct visor_connection_info *connection_info;
 726         unsigned char *transfer_buffer;
 727         char *string;
 728         int retval = 0;
 729         int i;
 730         int num_ports = 0;
 731
 732         dbg("%s", __FUNCTION__);
 733
 734         transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
 735         if (!transfer_buffer) {
 736                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 737                         sizeof(*connection_info));
 738                 return -ENOMEM;
 739         }
 740
 741         /* send a get connection info request */
 742         retval = usb_control_msg (serial->dev,
 743                                   usb_rcvctrlpipe(serial->dev, 0),
 744                                   VISOR_GET_CONNECTION_INFORMATION,
 745                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 746                                   sizeof(*connection_info), 300);
 747         if (retval < 0) {
 748                 dev_err(dev, "%s - error %d getting connection information\n",
 749                         __FUNCTION__, retval);
 750                 goto exit;
 751         }
 752
 753         if (retval == sizeof(*connection_info)) {
 754                 connection_info = (struct visor_connection_info *)transfer_buffer;
 755
 756                 num_ports = le16_to_cpu(connection_info->num_ports);
 757                 for (i = 0; i < num_ports; ++i) {
 758                         switch (connection_info->connections[i].port_function_id) {
 759                                 case VISOR_FUNCTION_GENERIC:
 760                                         string = "Generic";
 761                                         break;
 762                                 case VISOR_FUNCTION_DEBUGGER:
 763                                         string = "Debugger";
 764                                         break;
 765                                 case VISOR_FUNCTION_HOTSYNC:
 766                                         string = "HotSync";
 767                                         break;
 768                                 case VISOR_FUNCTION_CONSOLE:
 769                                         string = "Console";
 770                                         break;
 771                                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 772                                         string = "Remote File System";
 773                                         break;
 774                                 default:
 775                                         string = "unknown";
 776                                         break;
 777                         }
 778                         dev_info(dev, "%s: port %d, is for %s use\n",
 779                                 serial->type->name,
 780                                 connection_info->connections[i].port, string);
 781                 }
 782         }
 783         /*
 784         * Handle devices that report invalid stuff here.
 785         */
 786         if (num_ports == 0 || num_ports > 2) {
 787                 dev_warn (dev, "%s: No valid connect info available\n",
 788                         serial->type->name);
 789                 num_ports = 2;
 790         }
 791
 792         dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
 793                 num_ports);
 794
 795         /*
 796          * save off our num_ports info so that we can use it in the
 797          * calc_num_ports callback
 798          */
 799         usb_set_serial_data(serial, (void *)(long)num_ports);
 800
 801         /* ask for the number of bytes available, but ignore the response as it is broken */
 802         retval = usb_control_msg (serial->dev,
 803                                   usb_rcvctrlpipe(serial->dev, 0),
 804                                   VISOR_REQUEST_BYTES_AVAILABLE,
 805                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 806                                   0x02, 300);
 807         if (retval < 0)
 808                 dev_err(dev, "%s - error %d getting bytes available request\n",
 809                         __FUNCTION__, retval);
 810         retval = 0;
 811
 812 exit:
 813         kfree (transfer_buffer);
 814
 815         return retval;
 816 }
 817
 818 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
 819 {
 820         struct device *dev = &serial->dev->dev;
 821         struct palm_ext_connection_info *connection_info;
 822         unsigned char *transfer_buffer;
 823         int retval;
 824
 825         dbg("%s", __FUNCTION__);
 826
 827         transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
 828         if (!transfer_buffer) {
 829                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 830                         sizeof(*connection_info));
 831                 return -ENOMEM;
 832         }
 833
 834         retval = usb_control_msg (serial->dev,
 835                                   usb_rcvctrlpipe(serial->dev, 0),
 836                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 837                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 838                                   sizeof (*connection_info), 300);
 839         if (retval < 0)
 840                 dev_err(dev, "%s - error %d getting connection info\n",
 841                         __FUNCTION__, retval);
 842         else
 843                 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
 844                                       retval, transfer_buffer);
 845
 846         kfree (transfer_buffer);
 847         return 0;
 848 }
 849
 850
 851 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
 852 {
 853         int retval = 0;
 854         int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
 855
 856         dbg("%s", __FUNCTION__);
 857
 858         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 859                 err("active config #%d != 1 ??",
 860                         serial->dev->actconfig->desc.bConfigurationValue);
 861                 return -ENODEV;
 862         }
 863
 864         if (id->driver_info) {
 865                 startup = (void *)id->driver_info;
 866                 retval = startup(serial, id);
 867         }
 868
 869         return retval;
 870 }
 871
 872 static int visor_calc_num_ports (struct usb_serial *serial)
 873 {
 874         int num_ports = (int)(long)(usb_get_serial_data(serial));
 875
 876         if (num_ports)
 877                 usb_set_serial_data(serial, NULL);
 878
 879         return num_ports;
 880 }
 881
 882 static int generic_startup(struct usb_serial *serial)
 883 {
 884         struct visor_private *priv;
 885         int i;
 886
 887         for (i = 0; i < serial->num_ports; ++i) {
 888                 priv = kmalloc (sizeof(*priv), GFP_KERNEL);
 889                 if (!priv)
 890                         return -ENOMEM;
 891                 memset (priv, 0x00, sizeof(*priv));
 892                 spin_lock_init(&priv->lock);
 893                 usb_set_serial_port_data(serial->port[i], priv);
 894         }
 895         return 0;
 896 }
 897
 898 static int clie_3_5_startup (struct usb_serial *serial)
 899 {
 900         struct device *dev = &serial->dev->dev;
 901         int result;
 902         u8 data;
 903
 904         dbg("%s", __FUNCTION__);
 905
 906         /*
 907          * Note that PEG-300 series devices expect the following two calls.
 908          */
 909
 910         /* get the config number */
 911         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 912                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 913                                   0, 0, &data, 1, 3000);
 914         if (result < 0) {
 915                 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
 916                 return result;
 917         }
 918         if (result != 1) {
 919                 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
 920                 return -EIO;
 921         }
 922
 923         /* get the interface number */
 924         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 925                                   USB_REQ_GET_INTERFACE,
 926                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 927                                   0, 0, &data, 1, 3000);
 928         if (result < 0) {
 929                 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
 930                 return result;
 931         }
 932         if (result != 1) {
 933                 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
 934                 return -EIO;
 935         }
 936
 937         return generic_startup(serial);
 938 }
 939
 940 static int treo_attach (struct usb_serial *serial)
 941 {
 942         struct usb_serial_port *swap_port;
 943
 944         /* Only do this endpoint hack for the Handspring devices with
 945          * interrupt in endpoints, which for now are the Treo devices. */
 946         if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
 947               (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
 948             (serial->num_interrupt_in == 0))
 949                 goto generic_startup;
 950
 951         dbg("%s", __FUNCTION__);
 952
 953         /*
 954         * It appears that Treos and Kyoceras want to use the
 955         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 956         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 957         * Note that swapping the bulk out endpoints would break lots of
 958         * apps that want to communicate on the second port.
 959         */
 960 #define COPY_PORT(dest, src)                                            \
 961         dest->read_urb = src->read_urb;                                 \
 962         dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;   \
 963         dest->bulk_in_buffer = src->bulk_in_buffer;                     \
 964         dest->interrupt_in_urb = src->interrupt_in_urb;                 \
 965         dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
 966         dest->interrupt_in_buffer = src->interrupt_in_buffer;
 967
 968         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 969         if (!swap_port)
 970                 return -ENOMEM;
 971         COPY_PORT(swap_port, serial->port[0]);
 972         COPY_PORT(serial->port[0], serial->port[1]);
 973         COPY_PORT(serial->port[1], swap_port);
 974         kfree(swap_port);
 975
 976 generic_startup:
 977         return generic_startup(serial);
 978 }
 979
 980 static int clie_5_attach (struct usb_serial *serial)
 981 {
 982         dbg("%s", __FUNCTION__);
 983
 984         /* TH55 registers 2 ports.
 985            Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
 986            Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
 987
 988            Lets do a quick and dirty mapping
 989          */
 990
 991         /* some sanity check */
 992         if (serial->num_ports < 2)
 993                 return -1;
 994
 995         /* port 0 now uses the modified endpoint Address */
 996         serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
 997
 998         return generic_startup(serial);
 999 }
1000
1001 static void visor_shutdown (struct usb_serial *serial)
1002 {
1003         dbg("%s", __FUNCTION__);
1004 }
1005
1006 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
1007 {
1008         dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
1009
1010         return -ENOIOCTLCMD;
1011 }
1012
1013
1014 /* This function is all nice and good, but we don't change anything based on it :) */
1015 static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1016 {
1017         unsigned int cflag;
1018
1019         dbg("%s - port %d", __FUNCTION__, port->number);
1020
1021         if ((!port->tty) || (!port->tty->termios)) {
1022                 dbg("%s - no tty structures", __FUNCTION__);
1023                 return;
1024         }
1025
1026         cflag = port->tty->termios->c_cflag;
1027         /* check that they really want us to change something */
1028         if (old_termios) {
1029                 if ((cflag == old_termios->c_cflag) &&
1030                     (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1031                         dbg("%s - nothing to change...", __FUNCTION__);
1032                         return;
1033                 }
1034         }
1035
1036         /* get the byte size */
1037         switch (cflag & CSIZE) {
1038                 case CS5:       dbg("%s - data bits = 5", __FUNCTION__);   break;
1039                 case CS6:       dbg("%s - data bits = 6", __FUNCTION__);   break;
1040                 case CS7:       dbg("%s - data bits = 7", __FUNCTION__);   break;
1041                 default:
1042                 case CS8:       dbg("%s - data bits = 8", __FUNCTION__);   break;
1043         }
1044
1045         /* determine the parity */
1046         if (cflag & PARENB)
1047                 if (cflag & PARODD)
1048                         dbg("%s - parity = odd", __FUNCTION__);
1049                 else
1050                         dbg("%s - parity = even", __FUNCTION__);
1051         else
1052                 dbg("%s - parity = none", __FUNCTION__);
1053
1054         /* figure out the stop bits requested */
1055         if (cflag & CSTOPB)
1056                 dbg("%s - stop bits = 2", __FUNCTION__);
1057         else
1058                 dbg("%s - stop bits = 1", __FUNCTION__);
1059
1060
1061         /* figure out the flow control settings */
1062         if (cflag & CRTSCTS)
1063                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
1064         else
1065                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
1066
1067         /* determine software flow control */
1068         if (I_IXOFF(port->tty))
1069                 dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
1070                     __FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
1071         else
1072                 dbg("%s - XON/XOFF is disabled", __FUNCTION__);
1073
1074         /* get the baud rate wanted */
1075         dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
1076
1077         return;
1078 }
1079
1080
1081 static int __init visor_init (void)
1082 {
1083         int i, retval;
1084         /* Only if parameters were passed to us */
1085         if ((vendor>0) && (product>0)) {
1086                 struct usb_device_id usb_dev_temp[]=
1087                         {{USB_DEVICE(vendor, product),
1088                         .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
1089
1090                 /* Find the last entry in id_table */
1091                 for (i=0; ; i++) {
1092                         if (id_table[i].idVendor==0) {
1093                                 id_table[i] = usb_dev_temp[0];
1094                                 break;
1095                         }
1096                 }
1097                 /* Find the last entry in id_table_combined */
1098                 for (i=0; ; i++) {
1099                         if (id_table_combined[i].idVendor==0) {
1100                                 id_table_combined[i] = usb_dev_temp[0];
1101                                 break;
1102                         }
1103                 }
1104                 info("Untested USB device specified at time of module insertion");
1105                 info("Warning: This is not guaranteed to work");
1106                 info("Using a newer kernel is preferred to this method");
1107                 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
1108                         vendor, product);
1109         }
1110         retval = usb_serial_register(&handspring_device);
1111         if (retval)
1112                 goto failed_handspring_register;
1113         retval = usb_serial_register(&clie_3_5_device);
1114         if (retval)
1115                 goto failed_clie_3_5_register;
1116         retval = usb_serial_register(&clie_5_device);
1117         if (retval)
1118                 goto failed_clie_5_register;
1119         retval = usb_register(&visor_driver);
1120         if (retval)
1121                 goto failed_usb_register;
1122         info(DRIVER_DESC " " DRIVER_VERSION);
1123
1124         return 0;
1125 failed_usb_register:
1126         usb_serial_deregister(&clie_5_device);
1127 failed_clie_5_register:
1128         usb_serial_deregister(&clie_3_5_device);
1129 failed_clie_3_5_register:
1130         usb_serial_deregister(&handspring_device);
1131 failed_handspring_register:
1132         return retval;
1133 }
1134
1135
1136 static void __exit visor_exit (void)
1137 {
1138         usb_deregister (&visor_driver);
1139         usb_serial_deregister (&handspring_device);
1140         usb_serial_deregister (&clie_3_5_device);
1141         usb_serial_deregister (&clie_5_device);
1142 }
1143
1144
1145 module_init(visor_init);
1146 module_exit(visor_exit);
1147
1148 MODULE_AUTHOR( DRIVER_AUTHOR );
1149 MODULE_DESCRIPTION( DRIVER_DESC );
1150 MODULE_LICENSE("GPL");
1151
1152 module_param(debug, bool, S_IRUGO | S_IWUSR);
1153 MODULE_PARM_DESC(debug, "Debug enabled or not");
1154 module_param(stats, bool, S_IRUGO | S_IWUSR);
1155 MODULE_PARM_DESC(stats, "Enables statistics or not");
1156
1157 module_param(vendor, ushort, 0);
1158 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1159 module_param(product, ushort, 0);
1160 MODULE_PARM_DESC(product, "User specified product ID");
1161