[PATCH] USB: visor Tapwave Zodiac support patch
[linux-2.6.git] / 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 CliĆ© devices that lie about the number of ports they have.
61  *
62  * (08/30/2001) gkh
63  *      Added support for the Clie devices, both the 3.5 and 4.0 os versions.
64  *      Many thanks to Daniel Burke, and Bryan Payne for helping with this.
65  *
66  * (08/23/2001) gkh
67  *      fixed a few potential bugs pointed out by Oliver Neukum.
68  *
69  * (05/30/2001) gkh
70  *      switched from using spinlock to a semaphore, which fixes lots of problems.
71  *
72  * (05/28/2000) gkh
73  *      Added initial support for the Palm m500 and Palm m505 devices.
74  *
75  * (04/08/2001) gb
76  *      Identify version on module load.
77  *
78  * (01/21/2000) gkh
79  *      Added write_room and chars_in_buffer, as they were previously using the
80  *      generic driver versions which is all wrong now that we are using an urb
81  *      pool.  Thanks to Wolfgang Grandegger for pointing this out to me.
82  *      Removed count assignment in the write function, which was not needed anymore
83  *      either.  Thanks to Al Borchers for pointing this out.
84  *
85  * (12/12/2000) gkh
86  *      Moved MOD_DEC to end of visor_close to be nicer, as the final write 
87  *      message can sleep.
88  * 
89  * (11/12/2000) gkh
90  *      Fixed bug with data being dropped on the floor by forcing tty->low_latency
91  *      to be on.  Hopefully this fixes the OHCI issue!
92  *
93  * (11/01/2000) Adam J. Richter
94  *      usb_device_id table support
95  * 
96  * (10/05/2000) gkh
97  *      Fixed bug with urb->dev not being set properly, now that the usb
98  *      core needs it.
99  * 
100  * (09/11/2000) gkh
101  *      Got rid of always calling kmalloc for every urb we wrote out to the
102  *      device.
103  *      Added visor_read_callback so we can keep track of bytes in and out for
104  *      those people who like to know the speed of their device.
105  *      Removed DEBUG #ifdefs with call to usb_serial_debug_data
106  *
107  * (09/06/2000) gkh
108  *      Fixed oops in visor_exit.  Need to uncomment usb_unlink_urb call _after_
109  *      the host controller drivers set urb->dev = NULL when the urb is finished.
110  *
111  * (08/28/2000) gkh
112  *      Added locks for SMP safeness.
113  *
114  * (08/08/2000) gkh
115  *      Fixed endian problem in visor_startup.
116  *      Fixed MOD_INC and MOD_DEC logic and the ability to open a port more 
117  *      than once.
118  * 
119  * (07/23/2000) gkh
120  *      Added pool of write urbs to speed up transfers to the visor.
121  * 
122  * (07/19/2000) gkh
123  *      Added module_init and module_exit functions to handle the fact that this
124  *      driver is a loadable module now.
125  *
126  * (07/03/2000) gkh
127  *      Added visor_set_ioctl and visor_set_termios functions (they don't do much
128  *      of anything, but are good for debugging.)
129  * 
130  * (06/25/2000) gkh
131  *      Fixed bug in visor_unthrottle that should help with the disconnect in PPP
132  *      bug that people have been reporting.
133  *
134  * (06/23/2000) gkh
135  *      Cleaned up debugging statements in a quest to find UHCI timeout bug.
136  *
137  * (04/27/2000) Ryan VanderBijl
138  *      Fixed memory leak in visor_close
139  *
140  * (03/26/2000) gkh
141  *      Split driver up into device specific pieces.
142  * 
143  */
144
145 #include <linux/config.h>
146 #include <linux/kernel.h>
147 #include <linux/errno.h>
148 #include <linux/init.h>
149 #include <linux/slab.h>
150 #include <linux/tty.h>
151 #include <linux/tty_driver.h>
152 #include <linux/tty_flip.h>
153 #include <linux/module.h>
154 #include <linux/moduleparam.h>
155 #include <linux/spinlock.h>
156 #include <asm/uaccess.h>
157 #include <linux/usb.h>
158 #include "usb-serial.h"
159 #include "visor.h"
160
161 /*
162  * Version Information
163  */
164 #define DRIVER_VERSION "v2.1"
165 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
166 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
167
168 /* function prototypes for a handspring visor */
169 static int  visor_open          (struct usb_serial_port *port, struct file *filp);
170 static void visor_close         (struct usb_serial_port *port, struct file *filp);
171 static int  visor_write         (struct usb_serial_port *port, const unsigned char *buf, int count);
172 static int  visor_write_room            (struct usb_serial_port *port);
173 static int  visor_chars_in_buffer       (struct usb_serial_port *port);
174 static void visor_throttle      (struct usb_serial_port *port);
175 static void visor_unthrottle    (struct usb_serial_port *port);
176 static int  visor_probe         (struct usb_serial *serial, const struct usb_device_id *id);
177 static int  visor_calc_num_ports(struct usb_serial *serial);
178 static void visor_shutdown      (struct usb_serial *serial);
179 static int  visor_ioctl         (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
180 static void visor_set_termios   (struct usb_serial_port *port, struct termios *old_termios);
181 static void visor_write_bulk_callback   (struct urb *urb, struct pt_regs *regs);
182 static void visor_read_bulk_callback    (struct urb *urb, struct pt_regs *regs);
183 static void visor_read_int_callback     (struct urb *urb, struct pt_regs *regs);
184 static int  clie_3_5_startup    (struct usb_serial *serial);
185 static int  treo_attach         (struct usb_serial *serial);
186 static int clie_5_attach (struct usb_serial *serial);
187 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
188 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
189
190 /* Parameters that may be passed into the module. */
191 static int debug;
192 static __u16 vendor;
193 static __u16 product;
194
195 static struct usb_device_id id_table [] = {
196         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
197                 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
198         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
199                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
200         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
201                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
202         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
203                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
204         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
205                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
206         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
207                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
208         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
209                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
210         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
211                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
212         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
213                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
214         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
215                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
216         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
217                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
218         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
219                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
220         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
221                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
222         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
223                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
224         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
225                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
226         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
227                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
228         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
229                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
230         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
231                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
232         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
233                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
234         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
235                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
236         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
237                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
238         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID), 
239                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
240         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID), 
241                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
242         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
243                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
244         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID), 
245                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
246         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
247                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
248         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
249                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
250         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
251                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
252         { },                                    /* optional parameter entry */
253         { }                                     /* Terminating entry */
254 };
255
256 static struct usb_device_id clie_id_5_table [] = {
257         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
258                 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
259         { },                                    /* optional parameter entry */
260         { }                                     /* Terminating entry */
261 };
262
263 static struct usb_device_id clie_id_3_5_table [] = {
264         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
265         { }                                     /* Terminating entry */
266 };
267
268 static struct usb_device_id id_table_combined [] = {
269         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
270         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
271         { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
272         { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
273         { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
274         { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
275         { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
276         { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
277         { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
278         { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
279         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
280         { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
281         { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
282         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
283         { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
284         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
285         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
286         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
287         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
288         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
289         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
290         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
291         { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
292         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
293         { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
294         { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
295         { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
296         { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
297         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
298         { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
299         { },                                    /* optional parameter entry */
300         { }                                     /* Terminating entry */
301 };
302
303 MODULE_DEVICE_TABLE (usb, id_table_combined);
304
305 static struct usb_driver visor_driver = {
306         .owner =        THIS_MODULE,
307         .name =         "visor",
308         .probe =        usb_serial_probe,
309         .disconnect =   usb_serial_disconnect,
310         .id_table =     id_table_combined,
311 };
312
313 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
314 static struct usb_serial_device_type handspring_device = {
315         .owner =                THIS_MODULE,
316         .name =                 "Handspring Visor / Palm OS",
317         .short_name =           "visor",
318         .id_table =             id_table,
319         .num_interrupt_in =     NUM_DONT_CARE,
320         .num_bulk_in =          2,
321         .num_bulk_out =         2,
322         .num_ports =            2,
323         .open =                 visor_open,
324         .close =                visor_close,
325         .throttle =             visor_throttle,
326         .unthrottle =           visor_unthrottle,
327         .attach =               treo_attach,
328         .probe =                visor_probe,
329         .calc_num_ports =       visor_calc_num_ports,
330         .shutdown =             visor_shutdown,
331         .ioctl =                visor_ioctl,
332         .set_termios =          visor_set_termios,
333         .write =                visor_write,
334         .write_room =           visor_write_room,
335         .chars_in_buffer =      visor_chars_in_buffer,
336         .write_bulk_callback =  visor_write_bulk_callback,
337         .read_bulk_callback =   visor_read_bulk_callback,
338         .read_int_callback =    visor_read_int_callback,
339 };
340
341 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
342 static struct usb_serial_device_type clie_5_device = {
343         .owner =                THIS_MODULE,
344         .name =                 "Sony Clie 5.0",
345         .short_name =           "clie_5",
346         .id_table =             clie_id_5_table,
347         .num_interrupt_in =     NUM_DONT_CARE,
348         .num_bulk_in =          2,
349         .num_bulk_out =         2,
350         .num_ports =            2,
351         .open =                 visor_open,
352         .close =                visor_close,
353         .throttle =             visor_throttle,
354         .unthrottle =           visor_unthrottle,
355         .attach =               clie_5_attach,
356         .probe =                visor_probe,
357         .calc_num_ports =       visor_calc_num_ports,
358         .shutdown =             visor_shutdown,
359         .ioctl =                visor_ioctl,
360         .set_termios =          visor_set_termios,
361         .write =                visor_write,
362         .write_room =           visor_write_room,
363         .chars_in_buffer =      visor_chars_in_buffer,
364         .write_bulk_callback =  visor_write_bulk_callback,
365         .read_bulk_callback =   visor_read_bulk_callback,
366         .read_int_callback =    visor_read_int_callback,
367 };
368
369 /* device info for the Sony Clie OS version 3.5 */
370 static struct usb_serial_device_type clie_3_5_device = {
371         .owner =                THIS_MODULE,
372         .name =                 "Sony Clie 3.5",
373         .short_name =           "clie_3.5",
374         .id_table =             clie_id_3_5_table,
375         .num_interrupt_in =     0,
376         .num_bulk_in =          1,
377         .num_bulk_out =         1,
378         .num_ports =            1,
379         .open =                 visor_open,
380         .close =                visor_close,
381         .throttle =             visor_throttle,
382         .unthrottle =           visor_unthrottle,
383         .attach =               clie_3_5_startup,
384         .ioctl =                visor_ioctl,
385         .set_termios =          visor_set_termios,
386         .write =                visor_write,
387         .write_room =           visor_write_room,
388         .chars_in_buffer =      visor_chars_in_buffer,
389         .write_bulk_callback =  visor_write_bulk_callback,
390         .read_bulk_callback =   visor_read_bulk_callback,
391 };
392
393 struct visor_private {
394         spinlock_t lock;
395         int bytes_in;
396         int bytes_out;
397         int outstanding_urbs;
398         int throttled;
399 };
400
401 /* number of outstanding urbs to prevent userspace DoS from happening */
402 #define URB_UPPER_LIMIT 42
403
404 static int stats;
405
406 /******************************************************************************
407  * Handspring Visor specific driver functions
408  ******************************************************************************/
409 static int visor_open (struct usb_serial_port *port, struct file *filp)
410 {
411         struct usb_serial *serial = port->serial;
412         struct visor_private *priv = usb_get_serial_port_data(port);
413         unsigned long flags;
414         int result = 0;
415
416         dbg("%s - port %d", __FUNCTION__, port->number);
417
418         if (!port->read_urb) {
419                 /* this is needed for some brain dead Sony devices */
420                 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
421                 return -ENODEV;
422         }
423
424         spin_lock_irqsave(&priv->lock, flags);
425         priv->bytes_in = 0;
426         priv->bytes_out = 0;
427         priv->outstanding_urbs = 0;
428         priv->throttled = 0;
429         spin_unlock_irqrestore(&priv->lock, flags);
430
431         /*
432          * Force low_latency on so that our tty_push actually forces the data
433          * through, otherwise it is scheduled, and with high data rates (like
434          * with OHCI) data can get lost.
435          */
436         if (port->tty)
437                 port->tty->low_latency = 1;
438
439         /* Start reading from the device */
440         usb_fill_bulk_urb (port->read_urb, serial->dev,
441                            usb_rcvbulkpipe (serial->dev, 
442                                             port->bulk_in_endpointAddress),
443                            port->read_urb->transfer_buffer,
444                            port->read_urb->transfer_buffer_length,
445                            visor_read_bulk_callback, port);
446         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
447         if (result) {
448                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
449                         __FUNCTION__, result);
450                 goto exit;
451         }
452         
453         if (port->interrupt_in_urb) {
454                 dbg("%s - adding interrupt input for treo", __FUNCTION__);
455                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
456                 if (result)
457                         dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
458                                 __FUNCTION__, result);
459         }
460 exit:   
461         return result;
462 }
463
464
465 static void visor_close (struct usb_serial_port *port, struct file * filp)
466 {
467         struct visor_private *priv = usb_get_serial_port_data(port);
468         unsigned char *transfer_buffer;
469
470         dbg("%s - port %d", __FUNCTION__, port->number);
471                          
472         /* shutdown our urbs */
473         usb_kill_urb(port->read_urb);
474         if (port->interrupt_in_urb)
475                 usb_kill_urb(port->interrupt_in_urb);
476
477         /* Try to send shutdown message, if the device is gone, this will just fail. */
478         transfer_buffer =  kmalloc (0x12, GFP_KERNEL);
479         if (transfer_buffer) {
480                 usb_control_msg (port->serial->dev,
481                                  usb_rcvctrlpipe(port->serial->dev, 0),
482                                  VISOR_CLOSE_NOTIFICATION, 0xc2,
483                                  0x0000, 0x0000, 
484                                  transfer_buffer, 0x12, 300);
485                 kfree (transfer_buffer);
486         }
487
488         if (stats)
489                 dev_info(&port->dev, "Bytes In = %d  Bytes Out = %d\n",
490                          priv->bytes_in, priv->bytes_out);
491 }
492
493
494 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
495 {
496         struct visor_private *priv = usb_get_serial_port_data(port);
497         struct usb_serial *serial = port->serial;
498         struct urb *urb;
499         unsigned char *buffer;
500         unsigned long flags;
501         int status;
502
503         dbg("%s - port %d", __FUNCTION__, port->number);
504
505         spin_lock_irqsave(&priv->lock, flags);
506         if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
507                 spin_unlock_irqrestore(&priv->lock, flags);
508                 dbg("%s - write limit hit\n", __FUNCTION__);
509                 return 0;
510         }
511         spin_unlock_irqrestore(&priv->lock, flags);
512
513         buffer = kmalloc (count, GFP_ATOMIC);
514         if (!buffer) {
515                 dev_err(&port->dev, "out of memory\n");
516                 return -ENOMEM;
517         }
518
519         urb = usb_alloc_urb(0, GFP_ATOMIC);
520         if (!urb) {
521                 dev_err(&port->dev, "no more free urbs\n");
522                 kfree (buffer);
523                 return -ENOMEM;
524         }
525
526         memcpy (buffer, buf, count);
527
528         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
529
530         usb_fill_bulk_urb (urb, serial->dev,
531                            usb_sndbulkpipe (serial->dev,
532                                             port->bulk_out_endpointAddress),
533                            buffer, count, 
534                            visor_write_bulk_callback, port);
535
536         /* send it down the pipe */
537         status = usb_submit_urb(urb, GFP_ATOMIC);
538         if (status) {
539                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
540                         __FUNCTION__, status);
541                 count = status;
542                 kfree (buffer);
543         } else {
544                 spin_lock_irqsave(&priv->lock, flags);
545                 ++priv->outstanding_urbs;
546                 priv->bytes_out += count;
547                 spin_unlock_irqrestore(&priv->lock, flags);
548         }
549
550         /* we are done with this urb, so let the host driver
551          * really free it when it is finished with it */
552         usb_free_urb (urb);
553
554         return count;
555 }
556
557
558 static int visor_write_room (struct usb_serial_port *port)
559 {
560         dbg("%s - port %d", __FUNCTION__, port->number);
561
562         /*
563          * We really can take anything the user throws at us
564          * but let's pick a nice big number to tell the tty
565          * layer that we have lots of free space
566          */
567         return 2048;
568 }
569
570
571 static int visor_chars_in_buffer (struct usb_serial_port *port)
572 {
573         dbg("%s - port %d", __FUNCTION__, port->number);
574
575         /* 
576          * We can't really account for how much data we
577          * have sent out, but hasn't made it through to the
578          * device, so just tell the tty layer that everything
579          * is flushed.
580          */
581         return 0;
582 }
583
584
585 static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
586 {
587         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
588         struct visor_private *priv = usb_get_serial_port_data(port);
589         unsigned long flags;
590
591         /* free up the transfer buffer, as usb_free_urb() does not do this */
592         kfree (urb->transfer_buffer);
593
594         dbg("%s - port %d", __FUNCTION__, port->number);
595         
596         if (urb->status)
597                 dbg("%s - nonzero write bulk status received: %d",
598                     __FUNCTION__, urb->status);
599
600         spin_lock_irqsave(&priv->lock, flags);
601         --priv->outstanding_urbs;
602         spin_unlock_irqrestore(&priv->lock, flags);
603
604         schedule_work(&port->work);
605 }
606
607
608 static void visor_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
609 {
610         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
611         struct visor_private *priv = usb_get_serial_port_data(port);
612         unsigned char *data = urb->transfer_buffer;
613         struct tty_struct *tty;
614         unsigned long flags;
615         int i;
616         int throttled;
617         int result;
618
619         dbg("%s - port %d", __FUNCTION__, port->number);
620
621         if (urb->status) {
622                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
623                 return;
624         }
625
626         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
627
628         tty = port->tty;
629         if (tty && urb->actual_length) {
630                 for (i = 0; i < urb->actual_length ; ++i) {
631                         /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
632                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
633                                 tty_flip_buffer_push(tty);
634                         }
635                         /* this doesn't actually push the data through unless tty->low_latency is set */
636                         tty_insert_flip_char(tty, data[i], 0);
637                 }
638                 tty_flip_buffer_push(tty);
639         }
640         spin_lock_irqsave(&priv->lock, flags);
641         priv->bytes_in += urb->actual_length;
642         throttled = priv->throttled;
643         spin_unlock_irqrestore(&priv->lock, flags);
644
645         /* Continue trying to always read if we should */
646         if (!throttled) {
647                 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
648                                    usb_rcvbulkpipe(port->serial->dev,
649                                                    port->bulk_in_endpointAddress),
650                                    port->read_urb->transfer_buffer,
651                                    port->read_urb->transfer_buffer_length,
652                                    visor_read_bulk_callback, port);
653                 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
654                 if (result)
655                         dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
656         }
657         return;
658 }
659
660 static void visor_read_int_callback (struct urb *urb, struct pt_regs *regs)
661 {
662         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
663         int result;
664
665         switch (urb->status) {
666         case 0:
667                 /* success */
668                 break;
669         case -ECONNRESET:
670         case -ENOENT:
671         case -ESHUTDOWN:
672                 /* this urb is terminated, clean up */
673                 dbg("%s - urb shutting down with status: %d",
674                     __FUNCTION__, urb->status);
675                 return;
676         default:
677                 dbg("%s - nonzero urb status received: %d",
678                     __FUNCTION__, urb->status);
679                 goto exit;
680         }
681
682         /*
683          * This information is still unknown what it can be used for.
684          * If anyone has an idea, please let the author know...
685          *
686          * Rumor has it this endpoint is used to notify when data
687          * is ready to be read from the bulk ones.
688          */
689         usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
690                               urb->actual_length, urb->transfer_buffer);
691
692 exit:
693         result = usb_submit_urb (urb, GFP_ATOMIC);
694         if (result)
695                 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
696                         __FUNCTION__, result);
697 }
698
699 static void visor_throttle (struct usb_serial_port *port)
700 {
701         struct visor_private *priv = usb_get_serial_port_data(port);
702         unsigned long flags;
703
704         dbg("%s - port %d", __FUNCTION__, port->number);
705         spin_lock_irqsave(&priv->lock, flags);
706         priv->throttled = 1;
707         spin_unlock_irqrestore(&priv->lock, flags);
708 }
709
710
711 static void visor_unthrottle (struct usb_serial_port *port)
712 {
713         struct visor_private *priv = usb_get_serial_port_data(port);
714         unsigned long flags;
715         int result;
716
717         dbg("%s - port %d", __FUNCTION__, port->number);
718         spin_lock_irqsave(&priv->lock, flags);
719         priv->throttled = 0;
720         spin_unlock_irqrestore(&priv->lock, flags);
721
722         port->read_urb->dev = port->serial->dev;
723         result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
724         if (result)
725                 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
726 }
727
728 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
729 {
730         struct device *dev = &serial->dev->dev;
731         struct visor_connection_info *connection_info;
732         unsigned char *transfer_buffer;
733         char *string;
734         int retval = 0;
735         int i;
736         int num_ports = 0;
737
738         dbg("%s", __FUNCTION__);
739
740         transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
741         if (!transfer_buffer) {
742                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
743                         sizeof(*connection_info));
744                 return -ENOMEM;
745         }
746
747         /* send a get connection info request */
748         retval = usb_control_msg (serial->dev,
749                                   usb_rcvctrlpipe(serial->dev, 0),
750                                   VISOR_GET_CONNECTION_INFORMATION,
751                                   0xc2, 0x0000, 0x0000, transfer_buffer,
752                                   sizeof(*connection_info), 300);
753         if (retval < 0) {
754                 dev_err(dev, "%s - error %d getting connection information\n",
755                         __FUNCTION__, retval);
756                 goto exit;
757         }
758
759         if (retval == sizeof(*connection_info)) {
760                 connection_info = (struct visor_connection_info *)transfer_buffer;
761
762                 num_ports = le16_to_cpu(connection_info->num_ports);
763                 for (i = 0; i < num_ports; ++i) {
764                         switch (connection_info->connections[i].port_function_id) {
765                                 case VISOR_FUNCTION_GENERIC:
766                                         string = "Generic";
767                                         break;
768                                 case VISOR_FUNCTION_DEBUGGER:
769                                         string = "Debugger";
770                                         break;
771                                 case VISOR_FUNCTION_HOTSYNC:
772                                         string = "HotSync";
773                                         break;
774                                 case VISOR_FUNCTION_CONSOLE:
775                                         string = "Console";
776                                         break;
777                                 case VISOR_FUNCTION_REMOTE_FILE_SYS:
778                                         string = "Remote File System";
779                                         break;
780                                 default:
781                                         string = "unknown";
782                                         break;
783                         }
784                         dev_info(dev, "%s: port %d, is for %s use\n",
785                                 serial->type->name,
786                                 connection_info->connections[i].port, string);
787                 }
788         }
789         /*
790         * Handle devices that report invalid stuff here.
791         */
792         if (num_ports == 0 || num_ports > 2) {
793                 dev_warn (dev, "%s: No valid connect info available\n",
794                         serial->type->name);
795                 num_ports = 2;
796         }
797   
798         dev_info(dev, "%s: Number of ports: %d\n", serial->type->name,
799                 num_ports);
800
801         /*
802          * save off our num_ports info so that we can use it in the
803          * calc_num_ports callback
804          */
805         usb_set_serial_data(serial, (void *)(long)num_ports);
806
807         /* ask for the number of bytes available, but ignore the response as it is broken */
808         retval = usb_control_msg (serial->dev,
809                                   usb_rcvctrlpipe(serial->dev, 0),
810                                   VISOR_REQUEST_BYTES_AVAILABLE,
811                                   0xc2, 0x0000, 0x0005, transfer_buffer,
812                                   0x02, 300);
813         if (retval < 0)
814                 dev_err(dev, "%s - error %d getting bytes available request\n",
815                         __FUNCTION__, retval);
816         retval = 0;
817
818 exit:
819         kfree (transfer_buffer);
820
821         return retval;
822 }
823
824 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
825 {
826         struct device *dev = &serial->dev->dev;
827         struct palm_ext_connection_info *connection_info;
828         unsigned char *transfer_buffer;
829         int retval;
830
831         dbg("%s", __FUNCTION__);
832
833         transfer_buffer =  kmalloc (sizeof (*connection_info), GFP_KERNEL);
834         if (!transfer_buffer) {
835                 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
836                         sizeof(*connection_info));
837                 return -ENOMEM;
838         }
839
840         retval = usb_control_msg (serial->dev,
841                                   usb_rcvctrlpipe(serial->dev, 0), 
842                                   PALM_GET_EXT_CONNECTION_INFORMATION,
843                                   0xc2, 0x0000, 0x0000, transfer_buffer,
844                                   sizeof (*connection_info), 300);
845         if (retval < 0)
846                 dev_err(dev, "%s - error %d getting connection info\n",
847                         __FUNCTION__, retval);
848         else
849                 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
850                                       retval, transfer_buffer);
851
852         kfree (transfer_buffer);
853         return 0;
854 }
855
856
857 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
858 {
859         int retval = 0;
860         int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
861
862         dbg("%s", __FUNCTION__);
863
864         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
865                 err("active config #%d != 1 ??",
866                         serial->dev->actconfig->desc.bConfigurationValue);
867                 return -ENODEV;
868         }
869
870         if (id->driver_info) {
871                 startup = (void *)id->driver_info;
872                 retval = startup(serial, id);
873         }
874
875         return retval;
876 }
877
878 static int visor_calc_num_ports (struct usb_serial *serial)
879 {
880         int num_ports = (int)(long)(usb_get_serial_data(serial));
881
882         if (num_ports)
883                 usb_set_serial_data(serial, NULL);
884
885         return num_ports;
886 }
887
888 static int generic_startup(struct usb_serial *serial)
889 {
890         struct visor_private *priv;
891         int i;
892
893         for (i = 0; i < serial->num_ports; ++i) {
894                 priv = kmalloc (sizeof(*priv), GFP_KERNEL);
895                 if (!priv)
896                         return -ENOMEM;
897                 memset (priv, 0x00, sizeof(*priv));
898                 spin_lock_init(&priv->lock);
899                 usb_set_serial_port_data(serial->port[i], priv);
900         }
901         return 0;
902 }
903
904 static int clie_3_5_startup (struct usb_serial *serial)
905 {
906         struct device *dev = &serial->dev->dev;
907         int result;
908         u8 data;
909
910         dbg("%s", __FUNCTION__);
911
912         /*
913          * Note that PEG-300 series devices expect the following two calls.
914          */
915
916         /* get the config number */
917         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
918                                   USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
919                                   0, 0, &data, 1, 3000);
920         if (result < 0) {
921                 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
922                 return result;
923         }
924         if (result != 1) {
925                 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
926                 return -EIO;
927         }
928
929         /* get the interface number */
930         result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
931                                   USB_REQ_GET_INTERFACE, 
932                                   USB_DIR_IN | USB_RECIP_INTERFACE,
933                                   0, 0, &data, 1, 3000);
934         if (result < 0) {
935                 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
936                 return result;
937         }
938         if (result != 1) {
939                 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
940                 return -EIO;
941         }
942
943         return generic_startup(serial);
944 }
945  
946 static int treo_attach (struct usb_serial *serial)
947 {
948         struct usb_serial_port *swap_port;
949
950         /* Only do this endpoint hack for the Handspring devices with
951          * interrupt in endpoints, which for now are the Treo devices. */
952         if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
953               (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
954             (serial->num_interrupt_in == 0))
955                 goto generic_startup;
956
957         dbg("%s", __FUNCTION__);
958
959         /*
960         * It appears that Treos and Kyoceras want to use the 
961         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint, 
962         * so let's swap the 1st and 2nd bulk in and interrupt endpoints.  
963         * Note that swapping the bulk out endpoints would break lots of 
964         * apps that want to communicate on the second port.
965         */
966 #define COPY_PORT(dest, src)                                            \
967         dest->read_urb = src->read_urb;                                 \
968         dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;   \
969         dest->bulk_in_buffer = src->bulk_in_buffer;                     \
970         dest->interrupt_in_urb = src->interrupt_in_urb;                 \
971         dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
972         dest->interrupt_in_buffer = src->interrupt_in_buffer;
973
974         swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
975         if (!swap_port)
976                 return -ENOMEM;
977         COPY_PORT(swap_port, serial->port[0]);
978         COPY_PORT(serial->port[0], serial->port[1]);
979         COPY_PORT(serial->port[1], swap_port);
980         kfree(swap_port);
981
982 generic_startup:
983         return generic_startup(serial);
984 }
985
986 static int clie_5_attach (struct usb_serial *serial)
987 {
988         dbg("%s", __FUNCTION__);
989
990         /* TH55 registers 2 ports. 
991            Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0 
992            Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1 
993            
994            Lets do a quick and dirty mapping
995          */
996         
997         /* some sanity check */
998         if (serial->num_ports < 2)
999                 return -1;
1000                 
1001         /* port 0 now uses the modified endpoint Address */
1002         serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
1003
1004         return generic_startup(serial);
1005 }
1006
1007 static void visor_shutdown (struct usb_serial *serial)
1008 {
1009         dbg("%s", __FUNCTION__);
1010 }
1011
1012 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
1013 {
1014         dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
1015
1016         return -ENOIOCTLCMD;
1017 }
1018
1019
1020 /* This function is all nice and good, but we don't change anything based on it :) */
1021 static void visor_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1022 {
1023         unsigned int cflag;
1024
1025         dbg("%s - port %d", __FUNCTION__, port->number);
1026
1027         if ((!port->tty) || (!port->tty->termios)) {
1028                 dbg("%s - no tty structures", __FUNCTION__);
1029                 return;
1030         }
1031
1032         cflag = port->tty->termios->c_cflag;
1033         /* check that they really want us to change something */
1034         if (old_termios) {
1035                 if ((cflag == old_termios->c_cflag) &&
1036                     (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1037                         dbg("%s - nothing to change...", __FUNCTION__);
1038                         return;
1039                 }
1040         }
1041
1042         /* get the byte size */
1043         switch (cflag & CSIZE) {
1044                 case CS5:       dbg("%s - data bits = 5", __FUNCTION__);   break;
1045                 case CS6:       dbg("%s - data bits = 6", __FUNCTION__);   break;
1046                 case CS7:       dbg("%s - data bits = 7", __FUNCTION__);   break;
1047                 default:
1048                 case CS8:       dbg("%s - data bits = 8", __FUNCTION__);   break;
1049         }
1050         
1051         /* determine the parity */
1052         if (cflag & PARENB)
1053                 if (cflag & PARODD)
1054                         dbg("%s - parity = odd", __FUNCTION__);
1055                 else
1056                         dbg("%s - parity = even", __FUNCTION__);
1057         else
1058                 dbg("%s - parity = none", __FUNCTION__);
1059
1060         /* figure out the stop bits requested */
1061         if (cflag & CSTOPB)
1062                 dbg("%s - stop bits = 2", __FUNCTION__);
1063         else
1064                 dbg("%s - stop bits = 1", __FUNCTION__);
1065
1066         
1067         /* figure out the flow control settings */
1068         if (cflag & CRTSCTS)
1069                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
1070         else
1071                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
1072         
1073         /* determine software flow control */
1074         if (I_IXOFF(port->tty))
1075                 dbg("%s - XON/XOFF is enabled, XON = %2x, XOFF = %2x",
1076                     __FUNCTION__, START_CHAR(port->tty), STOP_CHAR(port->tty));
1077         else
1078                 dbg("%s - XON/XOFF is disabled", __FUNCTION__);
1079
1080         /* get the baud rate wanted */
1081         dbg("%s - baud rate = %d", __FUNCTION__, tty_get_baud_rate(port->tty));
1082
1083         return;
1084 }
1085
1086
1087 static int __init visor_init (void)
1088 {
1089         int i, retval;
1090         /* Only if parameters were passed to us */
1091         if ((vendor>0) && (product>0)) {
1092                 struct usb_device_id usb_dev_temp[]=
1093                         {{USB_DEVICE(vendor, product),
1094                         .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
1095
1096                 /* Find the last entry in id_table */
1097                 for (i=0; ; i++) {
1098                         if (id_table[i].idVendor==0) {
1099                                 id_table[i] = usb_dev_temp[0];
1100                                 break;
1101                         }
1102                 }
1103                 /* Find the last entry in id_table_combined */
1104                 for (i=0; ; i++) {
1105                         if (id_table_combined[i].idVendor==0) {
1106                                 id_table_combined[i] = usb_dev_temp[0];
1107                                 break;
1108                         }
1109                 }
1110                 info("Untested USB device specified at time of module insertion");
1111                 info("Warning: This is not guaranteed to work");
1112                 info("Using a newer kernel is preferred to this method");
1113                 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
1114                         vendor, product);
1115         }
1116         retval = usb_serial_register(&handspring_device);
1117         if (retval)
1118                 goto failed_handspring_register;
1119         retval = usb_serial_register(&clie_3_5_device);
1120         if (retval)
1121                 goto failed_clie_3_5_register;
1122         retval = usb_serial_register(&clie_5_device);
1123         if (retval)
1124                 goto failed_clie_5_register;
1125         retval = usb_register(&visor_driver);
1126         if (retval) 
1127                 goto failed_usb_register;
1128         info(DRIVER_DESC " " DRIVER_VERSION);
1129
1130         return 0;
1131 failed_usb_register:
1132         usb_serial_deregister(&clie_5_device);
1133 failed_clie_5_register:
1134         usb_serial_deregister(&clie_3_5_device);
1135 failed_clie_3_5_register:
1136         usb_serial_deregister(&handspring_device);
1137 failed_handspring_register:
1138         return retval;
1139 }
1140
1141
1142 static void __exit visor_exit (void)
1143 {
1144         usb_deregister (&visor_driver);
1145         usb_serial_deregister (&handspring_device);
1146         usb_serial_deregister (&clie_3_5_device);
1147         usb_serial_deregister (&clie_5_device);
1148 }
1149
1150
1151 module_init(visor_init);
1152 module_exit(visor_exit);
1153
1154 MODULE_AUTHOR( DRIVER_AUTHOR );
1155 MODULE_DESCRIPTION( DRIVER_DESC );
1156 MODULE_LICENSE("GPL");
1157
1158 module_param(debug, bool, S_IRUGO | S_IWUSR);
1159 MODULE_PARM_DESC(debug, "Debug enabled or not");
1160 module_param(stats, bool, S_IRUGO | S_IWUSR);
1161 MODULE_PARM_DESC(stats, "Enables statistics or not");
1162
1163 module_param(vendor, ushort, 0);
1164 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1165 module_param(product, ushort, 0);
1166 MODULE_PARM_DESC(product, "User specified product ID");
1167