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         { },                                    /* optional parameter entry */
 247         { }                                     /* Terminating entry */
 248 };
 249
 250 static struct usb_device_id clie_id_5_table [] = {
 251         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
 252                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
 253         { },                                    /* optional parameter entry */
 254         { }                                     /* Terminating entry */
 255 };
 256
 257 static struct usb_device_id clie_id_3_5_table [] = {
 258         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 259         { }                                     /* Terminating entry */
 260 };
 261
 262 static struct usb_device_id id_table_combined [] = {
 263         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
 264         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
 265         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
 266         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
 267         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
 268         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
 269         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
 270         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
 271         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 272         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 273         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
 274         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 275         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
 276         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
 277         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
 278         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
 279         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
 280         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
 281         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
 282         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
 283         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
 284         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
 285         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
 286         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
 287         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
 288         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
 289         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
 290         { },                                    /* optional parameter entry */
 291         { }                                     /* Terminating entry */
 292 };
 293
 294 MODULE_DEVICE_TABLE (usb, id_table_combined);
 295
 296 static struct usb_driver visor_driver = {
 297         .owner =        THIS_MODULE,
 298         .name =         "visor",
 299         .probe =        usb_serial_probe,
 300         .disconnect =   usb_serial_disconnect,
 301         .id_table =     id_table_combined,
 302 };
 303
 304 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
 305 static struct usb_serial_device_type handspring_device = {
 306         .owner =                THIS_MODULE,
 307         .name =                 "Handspring Visor / Palm OS",
 308         .short_name =           "visor",
 309         .id_table =             id_table,
 310         .num_interrupt_in =     NUM_DONT_CARE,
 311         .num_bulk_in =          2,
 312         .num_bulk_out =         2,
 313         .num_ports =            2,
 314         .open =                 visor_open,
 315         .close =                visor_close,
 316         .throttle =             visor_throttle,
 317         .unthrottle =           visor_unthrottle,
 318         .attach =               treo_attach,
 319         .probe =                visor_probe,
 320         .calc_num_ports =       visor_calc_num_ports,
 321         .shutdown =             visor_shutdown,
 322         .ioctl =                visor_ioctl,
 323         .set_termios =          visor_set_termios,
 324         .write =                visor_write,
 325         .write_room =           visor_write_room,
 326         .chars_in_buffer =      visor_chars_in_buffer,
 327         .write_bulk_callback =  visor_write_bulk_callback,
 328         .read_bulk_callback =   visor_read_bulk_callback,
 329         .read_int_callback =    visor_read_int_callback,
 330 };
 331
 332 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
 333 static struct usb_serial_device_type clie_5_device = {
 334         .owner =                THIS_MODULE,
 335         .name =                 "Sony Clie 5.0",
 336         .short_name =           "clie_5",
 337         .id_table =             clie_id_5_table,
 338         .num_interrupt_in =     NUM_DONT_CARE,
 339         .num_bulk_in =          2,
 340         .num_bulk_out =         2,
 341         .num_ports =            2,
 342         .open =                 visor_open,
 343         .close =                visor_close,
 344         .throttle =             visor_throttle,
 345         .unthrottle =           visor_unthrottle,
 346         .attach =               clie_5_attach,
 347         .probe =                visor_probe,
 348         .calc_num_ports =       visor_calc_num_ports,
 349         .shutdown =             visor_shutdown,
 350         .ioctl =                visor_ioctl,
 351         .set_termios =          visor_set_termios,
 352         .write =                visor_write,
 353         .write_room =           visor_write_room,
 354         .chars_in_buffer =      visor_chars_in_buffer,
 355         .write_bulk_callback =  visor_write_bulk_callback,
 356         .read_bulk_callback =   visor_read_bulk_callback,
 357         .read_int_callback =    visor_read_int_callback,
 358 };
 359
 360 /* device info for the Sony Clie OS version 3.5 */
 361 static struct usb_serial_device_type clie_3_5_device = {
 362         .owner =                THIS_MODULE,
 363         .name =                 "Sony Clie 3.5",
 364         .short_name =           "clie_3.5",
 365         .id_table =             clie_id_3_5_table,
 366         .num_interrupt_in =     0,
 367         .num_bulk_in =          1,
 368         .num_bulk_out =         1,
 369         .num_ports =            1,
 370         .open =                 visor_open,
 371         .close =                visor_close,
 372         .throttle =             visor_throttle,
 373         .unthrottle =           visor_unthrottle,
 374         .attach =               clie_3_5_startup,
 375         .ioctl =                visor_ioctl,
 376         .set_termios =          visor_set_termios,
 377         .write =                visor_write,
 378         .write_room =           visor_write_room,
 379         .chars_in_buffer =      visor_chars_in_buffer,
 380         .write_bulk_callback =  visor_write_bulk_callback,
 381         .read_bulk_callback =   visor_read_bulk_callback,
 382 };
 383
 384 struct visor_private {
 385         spinlock_t lock;
 386         int bytes_in;
 387         int bytes_out;
 388         int outstanding_urbs;
 389         int throttled;
 390 };
 391
 392 /* number of outstanding urbs to prevent userspace DoS from happening */
 393 #define URB_UPPER_LIMIT 42
 394
 395 static int stats;
 396
 397 /******************************************************************************
 398  * Handspring Visor specific driver functions
 399  ******************************************************************************/
 400 static int visor_open (struct usb_serial_port *port, struct file *filp)
 401 {
 402         struct usb_serial *serial = port->serial;
 403         struct visor_private *priv = usb_get_serial_port_data(port);
 404         unsigned long flags;
 405         int result = 0;
 406
 407         dbg("%s - port %d", __FUNCTION__, port->number);
 408
 409         if (!port->read_urb) {
 410                 /* this is needed for some brain dead Sony devices */
 411                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
 412                 return -ENODEV;
 413         }
 414
 415         spin_lock_irqsave(&priv->lock, flags);
 416         priv->bytes_in = 0;
 417         priv->bytes_out = 0;
 418         priv->outstanding_urbs = 0;
 419         priv->throttled = 0;
 420         spin_unlock_irqrestore(&priv->lock, flags);
 421
 422         /*
 423          * Force low_latency on so that our tty_push actually forces the data
 424          * through, otherwise it is scheduled, and with high data rates (like
 425          * with OHCI) data can get lost.
 426          */
 427         if (port->tty)
 428                 port->tty->low_latency = 1;
 429
 430         /* Start reading from the device */
 431         usb_fill_bulk_urb (port->read_urb, serial->dev,
 432                            usb_rcvbulkpipe (serial->dev,
 433                                             port->bulk_in_endpointAddress),
 434                            port->read_urb->transfer_buffer,
 435                            port->read_urb->transfer_buffer_length,
 436                            visor_read_bulk_callback, port);
 437         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 438         if (result) {
 439                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
 440                         __FUNCTION__, result);
 441                 goto exit;
 442         }
 443
 444         if (port->interrupt_in_urb) {
 445                 dbg("%s - adding interrupt input for treo", __FUNCTION__);
 446                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 447                 if (result)
 448                         dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
 449                                 __FUNCTION__, result);
 450         }
 451 exit:
 452         return result;
 453 }
 454
 455
 456 static void visor_close (struct usb_serial_port *port, struct file * filp)
 457 {
 458         struct visor_private *priv = usb_get_serial_port_data(port);
 459         unsigned char *transfer_buffer;
 460
 461         dbg("%s - port %d", __FUNCTION__, port->number);
 462
 463         /* shutdown our urbs */
 464         usb_kill_urb(port->read_urb);
 465         if (port->interrupt_in_urb)
 466                 usb_kill_urb(port->interrupt_in_urb);
 467
 468         /* Try to send shutdown message, if the device is gone, this will just fail. */
 469         transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
 470         if (transfer_buffer) {
 471                 usb_control_msg (port->serial->dev,
 472                                  usb_rcvctrlpipe(port->serial->dev, 0),
 473                                  VISOR_CLOSE_NOTIFICATION, 0xc2,
 474                                  0x0000, 0x0000,
 475                                  transfer_buffer, 0x12, 300);
 476                 kfree (transfer_buffer);
 477         }
 478
 479         if (stats)
 480                 dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
 481                          priv->bytes_in, priv->bytes_out);
 482 }
 483
 484
 485 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
 486 {
 487         struct visor_private *priv = usb_get_serial_port_data(port);
 488         struct usb_serial *serial = port->serial;
 489         struct urb *urb;
 490         unsigned char *buffer;
 491         unsigned long flags;
 492         int status;
 493
 494         dbg("%s - port %d", __FUNCTION__, port->number);
 495
 496         spin_lock_irqsave(&priv->lock, flags);
 497         if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 498                 spin_unlock_irqrestore(&priv->lock, flags);
 499                 dbg("%s - write limit hit\n", __FUNCTION__);
 500                 return 0;
 501         }
 502         spin_unlock_irqrestore(&priv->lock, flags);
 503
 504         buffer = kmalloc (count, GFP_ATOMIC);
 505         if (!buffer) {
 506                 dev_err(&port->dev, "out of memory\n");
 507                 return -ENOMEM;
 508         }
 509
 510         urb = usb_alloc_urb(0, GFP_ATOMIC);
 511         if (!urb) {
 512                 dev_err(&port->dev, "no more free urbs\n");
 513                 kfree (buffer);
 514                 return -ENOMEM;
 515         }
 516
 517         memcpy (buffer, buf, count);
 518
 519         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 520
 521         usb_fill_bulk_urb (urb, serial->dev,
 522                            usb_sndbulkpipe (serial->dev,
 523                                             port->bulk_out_endpointAddress),
 524                            buffer, count,
 525                            visor_write_bulk_callback, port);
 526
 527         /* send it down the pipe */
 528         status = usb_submit_urb(urb, GFP_ATOMIC);
 529         if (status) {
 530                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
 531                         __FUNCTION__, status);
 532                 count = status;
 533                 kfree (buffer);
 534         } else {
 535                 spin_lock_irqsave(&priv->lock, flags);
 536                 ++priv->outstanding_urbs;
 537                 priv->bytes_out += count;
 538                 spin_unlock_irqrestore(&priv->lock, flags);
 539         }
 540
 541         /* we are done with this urb, so let the host driver
 542          * really free it when it is finished with it */
 543         usb_free_urb (urb);
 544
 545         return count;
 546 }
 547
 548
 549 static int visor_write_room (struct usb_serial_port *port)
 550 {
 551         dbg("%s - port %d", __FUNCTION__, port->number);
 552
 553         /*
 554          * We really can take anything the user throws at us
 555          * but let's pick a nice big number to tell the tty
 556          * layer that we have lots of free space
 557          */
 558         return 2048;
 559 }
 560
 561
 562 static int visor_chars_in_buffer (struct usb_serial_port *port)
 563 {
 564         dbg("%s - port %d", __FUNCTION__, port->number);
 565
 566         /*
 567          * We can't really account for how much data we
 568          * have sent out, but hasn't made it through to the
 569          * device, so just tell the tty layer that everything
 570          * is flushed.
 571          */
 572         return 0;
 573 }
 574
 575
 576 static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 577 {
 578         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 579         struct visor_private *priv = usb_get_serial_port_data(port);
 580         unsigned long flags;
 581
 582         /* free up the transfer buffer, as usb_free_urb() does not do this */
 583         kfree (urb->transfer_buffer);
 584
 585         dbg("%s - port %d", __FUNCTION__, port->number);
 586
 587         if (urb->status)
 588                 dbg("%s - nonzero write bulk status received: %d",
 589                     __FUNCTION__, urb->status);
 590
 591         spin_lock_irqsave(&priv->lock, flags);
 592         --priv->outstanding_urbs;
 593         spin_unlock_irqrestore(&priv->lock, flags);
 594
 595         schedule_work(&port->work);
 596 }
 597
 598
 599 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
 600 {
 601         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 602         struct visor_private *priv = usb_get_serial_port_data(port);
 603         unsigned char *data = urb->transfer_buffer;
 604         struct tty_struct *tty;
 605         unsigned long flags;
 606         int i;
 607         int throttled;
 608         int result;
 609
 610         dbg("%s - port %d", __FUNCTION__, port->number);
 611
 612         if (urb->status) {
 613                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 614                 return;
 615         }
 616
 617         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
 618
 619         tty = port->tty;
 620         if (tty && urb->actual_length) {
 621                 for (i = 0; i < urb->actual_length ; ++i) {
 622                         /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
 623                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 624                                 tty_flip_buffer_push(tty);
 625                         }
 626                         /* this doesn't actually push the data through unless tty->low_latency is set */
 627                         tty_insert_flip_char(tty, data[i], 0);
 628                 }
 629                 tty_flip_buffer_push(tty);
 630         }
 631         spin_lock_irqsave(&priv->lock, flags);
 632         priv->bytes_in += urb->actual_length;
 633         throttled = priv->throttled;
 634         spin_unlock_irqrestore(&priv->lock, flags);
 635
 636         /* Continue trying to always read if we should */
 637         if (!throttled) {
 638                 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
 639                                    usb_rcvbulkpipe(port->serial->dev,
 640                                                    port->bulk_in_endpointAddress),
 641                                    port->read_urb->transfer_buffer,
 642                                    port->read_urb->transfer_buffer_length,
 643                                    visor_read_bulk_callback, port);
 644                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 645                 if (result)
 646                         dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
 647         }
 648         return;
 649 }
 650
 651 static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
 652 {
 653         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 654         int result;
 655
 656         switch (urb->status) {
 657         case 0:
 658                 /* success */
 659                 break;
 660         case -ECONNRESET:
 661         case -ENOENT:
 662         case -ESHUTDOWN:
 663                 /* this urb is terminated, clean up */
 664                 dbg("%s - urb shutting down with status: %d",
 665                     __FUNCTION__, urb->status);
 666                 return;
 667         default:
 668                 dbg("%s - nonzero urb status received: %d",
 669                     __FUNCTION__, urb->status);
 670                 goto exit;
 671         }
 672
 673         /*
 674          * This information is still unknown what it can be used for.
 675          * If anyone has an idea, please let the author know...
 676          *
 677          * Rumor has it this endpoint is used to notify when data
 678          * is ready to be read from the bulk ones.
 679          */
 680         usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
 681                               urb->actual_length, urb->transfer_buffer);
 682
 683 exit:
 684         result = usb_submit_urb (urb, GFP_ATOMIC);
 685         if (result)
 686                 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
 687                         __FUNCTION__, result);
 688 }
 689
 690 static void visor_throttle (struct usb_serial_port *port)
 691 {
 692         struct visor_private *priv = usb_get_serial_port_data(port);
 693         unsigned long flags;
 694
 695         dbg("%s - port %d", __FUNCTION__, port->number);
 696         spin_lock_irqsave(&priv->lock, flags);
 697         priv->throttled = 1;
 698         spin_unlock_irqrestore(&priv->lock, flags);
 699 }
 700
 701
 702 static void visor_unthrottle (struct usb_serial_port *port)
 703 {
 704         struct visor_private *priv = usb_get_serial_port_data(port);
 705         unsigned long flags;
 706         int result;
 707
 708         dbg("%s - port %d", __FUNCTION__, port->number);
 709         spin_lock_irqsave(&priv->lock, flags);
 710         priv->throttled = 0;
 711         spin_unlock_irqrestore(&priv->lock, flags);
 712
 713         port->read_urb->dev = port->serial->dev;
 714         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
 715         if (result)
 716                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
 717 }
 718
 719 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
 720 {
 721         struct device *dev = &serial->dev->dev;
 722         struct visor_connection_info *connection_info;
 723         unsigned char *transfer_buffer;
 724         char *string;
 725         int retval = 0;
 726         int i;
 727         int num_ports = 0;
 728
 729         dbg("%s", __FUNCTION__);
 730
 731         transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
 732         if (!transfer_buffer) {
 733                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 734                         sizeof(*connection_info));
 735                 return -ENOMEM;
 736         }
 737
 738         /* send a get connection info request */
 739         retval = usb_control_msg (serial->dev,
 740                                   usb_rcvctrlpipe(serial->dev, 0),
 741                                   VISOR_GET_CONNECTION_INFORMATION,
 742                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 743                                   sizeof(*connection_info), 300);
 744         if (retval < 0) {
 745                 dev_err(dev, "%s - error %d getting connection information\n",
 746                         __FUNCTION__, retval);
 747                 goto exit;
 748         }
 749
 750         if (retval == sizeof(*connection_info)) {
 751                 connection_info = (struct visor_connection_info *)transfer_buffer;
 752
 753                 num_ports = le16_to_cpu(connection_info->num_ports);
 754                 for (i = 0; i < num_ports; ++i) {
 755                         switch (connection_info->connections[i].port_function_id) {
 756                                 case VISOR_FUNCTION_GENERIC:
 757                                         string = "Generic";
 758                                         break;
 759                                 case VISOR_FUNCTION_DEBUGGER:
 760                                         string = "Debugger";
 761                                         break;
 762                                 case VISOR_FUNCTION_HOTSYNC:
 763                                         string = "HotSync";
 764                                         break;
 765                                 case VISOR_FUNCTION_CONSOLE:
 766                                         string = "Console";
 767                                         break;
 768                                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
 769                                         string = "Remote File System";
 770                                         break;
 771                                 default:
 772                                         string = "unknown";
 773                                         break;
 774                         }
 775                         dev_info(dev, "%s: port %d, is for %s use\n",
 776                                 serial->type->name,
 777                                 connection_info->connections[i].port, string);
 778                 }
 779         }
 780         /*
 781         * Handle devices that report invalid stuff here.
 782         */
 783         if (num_ports == 0 || num_ports > 2) {
 784                 dev_warn (dev, "%s: No valid connect info available\n",
 785                         serial->type->name);
 786                 num_ports = 2;
 787         }
 788
 789         dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
 790                 num_ports);
 791
 792         /*
 793          * save off our num_ports info so that we can use it in the
 794          * calc_num_ports callback
 795          */
 796         usb_set_serial_data(serial, (void *)(long)num_ports);
 797
 798         /* ask for the number of bytes available, but ignore the response as it is broken */
 799         retval = usb_control_msg (serial->dev,
 800                                   usb_rcvctrlpipe(serial->dev, 0),
 801                                   VISOR_REQUEST_BYTES_AVAILABLE,
 802                                   0xc2, 0x0000, 0x0005, transfer_buffer,
 803                                   0x02, 300);
 804         if (retval < 0)
 805                 dev_err(dev, "%s - error %d getting bytes available request\n",
 806                         __FUNCTION__, retval);
 807         retval = 0;
 808
 809 exit:
 810         kfree (transfer_buffer);
 811
 812         return retval;
 813 }
 814
 815 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
 816 {
 817         struct device *dev = &serial->dev->dev;
 818         struct palm_ext_connection_info *connection_info;
 819         unsigned char *transfer_buffer;
 820         int retval;
 821
 822         dbg("%s", __FUNCTION__);
 823
 824         transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
 825         if (!transfer_buffer) {
 826                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
 827                         sizeof(*connection_info));
 828                 return -ENOMEM;
 829         }
 830
 831         retval = usb_control_msg (serial->dev,
 832                                   usb_rcvctrlpipe(serial->dev, 0),
 833                                   PALM_GET_EXT_CONNECTION_INFORMATION,
 834                                   0xc2, 0x0000, 0x0000, transfer_buffer,
 835                                   sizeof (*connection_info), 300);
 836         if (retval < 0)
 837                 dev_err(dev, "%s - error %d getting connection info\n",
 838                         __FUNCTION__, retval);
 839         else
 840                 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
 841                                       retval, transfer_buffer);
 842
 843         kfree (transfer_buffer);
 844         return 0;
 845 }
 846
 847
 848 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
 849 {
 850         int retval = 0;
 851         int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
 852
 853         dbg("%s", __FUNCTION__);
 854
 855         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
 856                 err("active config #%d != 1 ??",
 857                         serial->dev->actconfig->desc.bConfigurationValue);
 858                 return -ENODEV;
 859         }
 860
 861         if (id->driver_info) {
 862                 startup = (void *)id->driver_info;
 863                 retval = startup(serial, id);
 864         }
 865
 866         return retval;
 867 }
 868
 869 static int visor_calc_num_ports (struct usb_serial *serial)
 870 {
 871         int num_ports = (int)(long)(usb_get_serial_data(serial));
 872
 873         if (num_ports)
 874                 usb_set_serial_data(serial, NULL);
 875
 876         return num_ports;
 877 }
 878
 879 static int generic_startup(struct usb_serial *serial)
 880 {
 881         struct visor_private *priv;
 882         int i;
 883
 884         for (i = 0; i < serial->num_ports; ++i) {
 885                 priv = kmalloc (sizeof(*priv), GFP_KERNEL);
 886                 if (!priv)
 887                         return -ENOMEM;
 888                 memset (priv, 0x00, sizeof(*priv));
 889                 spin_lock_init(&priv->lock);
 890                 usb_set_serial_port_data(serial->port[i], priv);
 891         }
 892         return 0;
 893 }
 894
 895 static int clie_3_5_startup (struct usb_serial *serial)
 896 {
 897         struct device *dev = &serial->dev->dev;
 898         int result;
 899         u8 data;
 900
 901         dbg("%s", __FUNCTION__);
 902
 903         /*
 904          * Note that PEG-300 series devices expect the following two calls.
 905          */
 906
 907         /* get the config number */
 908         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 909                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
 910                                   0, 0, &data, 1, HZ * 3);
 911         if (result < 0) {
 912                 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
 913                 return result;
 914         }
 915         if (result != 1) {
 916                 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
 917                 return -EIO;
 918         }
 919
 920         /* get the interface number */
 921         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 922                                   USB_REQ_GET_INTERFACE,
 923                                   USB_DIR_IN | USB_RECIP_INTERFACE,
 924                                   0, 0, &data, 1, HZ * 3);
 925         if (result < 0) {
 926                 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
 927                 return result;
 928         }
 929         if (result != 1) {
 930                 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
 931                 return -EIO;
 932         }
 933
 934         return generic_startup(serial);
 935 }
 936
 937 static int treo_attach (struct usb_serial *serial)
 938 {
 939         struct usb_serial_port *swap_port;
 940
 941         /* Only do this endpoint hack for the Handspring devices with
 942          * interrupt in endpoints, which for now are the Treo devices. */
 943         if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
 944               (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
 945             (serial->num_interrupt_in == 0))
 946                 goto generic_startup;
 947
 948         dbg("%s", __FUNCTION__);
 949
 950         /*
 951         * It appears that Treos and Kyoceras want to use the
 952         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
 953         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
 954         * Note that swapping the bulk out endpoints would break lots of
 955         * apps that want to communicate on the second port.
 956         */
 957 #define COPY_PORT(dest, src)                                            \
 958         dest->read_urb = src->read_urb;                                 \
 959         dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;   \
 960         dest->bulk_in_buffer = src->bulk_in_buffer;                     \
 961         dest->interrupt_in_urb = src->interrupt_in_urb;                 \
 962         dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
 963         dest->interrupt_in_buffer = src->interrupt_in_buffer;
 964
 965         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
 966         if (!swap_port)
 967                 return -ENOMEM;
 968         COPY_PORT(swap_port, serial->port[0]);
 969         COPY_PORT(serial->port[0], serial->port[1]);
 970         COPY_PORT(serial->port[1], swap_port);
 971         kfree(swap_port);
 972
 973 generic_startup:
 974         return generic_startup(serial);
 975 }
 976
 977 static int clie_5_attach (struct usb_serial *serial)
 978 {
 979         dbg("%s", __FUNCTION__);
 980
 981         /* TH55 registers 2 ports.
 982            Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
 983            Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
 984
 985            Lets do a quick and dirty mapping
 986          */
 987
 988         /* some sanity check */
 989         if (serial->num_ports < 2)
 990                 return -1;
 991
 992         /* port 0 now uses the modified endpoint Address */
 993         serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
 994
 995         return generic_startup(serial);
 996 }
 997
 998 static void visor_shutdown (struct usb_serial *serial)
 999 {
1000         dbg("%s", __FUNCTION__);
1001 }
1002
1003 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
1004 {
1005         dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
1006
1007         return -ENOIOCTLCMD;
1008 }
1009
1010
1011 /* This function is all nice and good, but we don't change anything based on it :) */
1012 static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1013 {
1014         unsigned int cflag;
1015
1016         dbg("%s - port %d", __FUNCTION__, port->number);
1017
1018         if ((!port->tty) || (!port->tty->termios)) {
1019                 dbg("%s - no tty structures", __FUNCTION__);
1020                 return;
1021         }
1022
1023         cflag = port->tty->termios->c_cflag;
1024         /* check that they really want us to change something */
1025         if (old_termios) {
1026                 if ((cflag == old_termios->c_cflag) &&
1027                     (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1028                         dbg("%s - nothing to change...", __FUNCTION__);
1029                         return;
1030                 }
1031         }
1032
1033         /* get the byte size */
1034         switch (cflag & CSIZE) {
1035                 case CS5:       dbg("%s - data bits = 5", __FUNCTION__);   break;
1036                 case CS6:       dbg("%s - data bits = 6", __FUNCTION__);   break;
1037                 case CS7:       dbg("%s - data bits = 7", __FUNCTION__);   break;
1038                 default:
1039                 case CS8:       dbg("%s - data bits = 8", __FUNCTION__);   break;
1040         }
1041
1042         /* determine the parity */
1043         if (cflag & PARENB)
1044                 if (cflag & PARODD)
1045                         dbg("%s - parity = odd", __FUNCTION__);
1046                 else
1047                         dbg("%s - parity = even", __FUNCTION__);
1048         else
1049                 dbg("%s - parity = none", __FUNCTION__);
1050
1051         /* figure out the stop bits requested */
1052         if (cflag & CSTOPB)
1053                 dbg("%s - stop bits = 2", __FUNCTION__);
1054         else
1055                 dbg("%s - stop bits = 1", __FUNCTION__);
1056
1057
1058         /* figure out the flow control settings */
1059         if (cflag & CRTSCTS)
1060                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
1061         else
1062                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
1063
1064         /* determine software flow control */
1065         if (I_IXOFF(port->tty))
1066                 dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
1067                     __FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
1068         else
1069                 dbg("%s - XON/XOFF is disabled", __FUNCTION__);
1070
1071         /* get the baud rate wanted */
1072         dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
1073
1074         return;
1075 }
1076
1077
1078 static int __init visor_init (void)
1079 {
1080         int i, retval;
1081         /* Only if parameters were passed to us */
1082         if ((vendor>0) && (product>0)) {
1083                 struct usb_device_id usb_dev_temp[]=
1084                         {{USB_DEVICE(vendor, product),
1085                         .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
1086
1087                 /* Find the last entry in id_table */
1088                 for (i=0; ; i++) {
1089                         if (id_table[i].idVendor==0) {
1090                                 id_table[i] = usb_dev_temp[0];
1091                                 break;
1092                         }
1093                 }
1094                 /* Find the last entry in id_table_combined */
1095                 for (i=0; ; i++) {
1096                         if (id_table_combined[i].idVendor==0) {
1097                                 id_table_combined[i] = usb_dev_temp[0];
1098                                 break;
1099                         }
1100                 }
1101                 info("Untested USB device specified at time of module insertion");
1102                 info("Warning: This is not guaranteed to work");
1103                 info("Using a newer kernel is preferred to this method");
1104                 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
1105                         vendor, product);
1106         }
1107         retval = usb_serial_register(&handspring_device);
1108         if (retval)
1109                 goto failed_handspring_register;
1110         retval = usb_serial_register(&clie_3_5_device);
1111         if (retval)
1112                 goto failed_clie_3_5_register;
1113         retval = usb_serial_register(&clie_5_device);
1114         if (retval)
1115                 goto failed_clie_5_register;
1116         retval = usb_register(&visor_driver);
1117         if (retval)
1118                 goto failed_usb_register;
1119         info(DRIVER_DESC " " DRIVER_VERSION);
1120
1121         return 0;
1122 failed_usb_register:
1123         usb_serial_deregister(&clie_5_device);
1124 failed_clie_5_register:
1125         usb_serial_deregister(&clie_3_5_device);
1126 failed_clie_3_5_register:
1127         usb_serial_deregister(&handspring_device);
1128 failed_handspring_register:
1129         return retval;
1130 }
1131
1132
1133 static void __exit visor_exit (void)
1134 {
1135         usb_deregister (&visor_driver);
1136         usb_serial_deregister (&handspring_device);
1137         usb_serial_deregister (&clie_3_5_device);
1138         usb_serial_deregister (&clie_5_device);
1139 }
1140
1141
1142 module_init(visor_init);
1143 module_exit(visor_exit);
1144
1145 MODULE_AUTHOR( DRIVER_AUTHOR );
1146 MODULE_DESCRIPTION( DRIVER_DESC );
1147 MODULE_LICENSE("GPL");
1148
1149 module_param(debug, bool, S_IRUGO | S_IWUSR);
1150 MODULE_PARM_DESC(debug, "Debug enabled or not");
1151 module_param(stats, bool, S_IRUGO | S_IWUSR);
1152 MODULE_PARM_DESC(stats, "Enables statistics or not");
1153
1154 module_param(vendor, ushort, 0);
1155 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1156 module_param(product, ushort, 0);
1157 MODULE_PARM_DESC(product, "User specified product ID");
1158