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