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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / usb / serial / visor.c
blob5fc20122145f3a31dbd4038377e27680fc0a2f93
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
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
11 *
12 * See Documentation/usb/usb-serial.txt for more information on using this driver
13 *
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/spinlock.h>
26 #include <asm/uaccess.h>
27 #include <linux/usb.h>
28 #include <linux/usb/serial.h>
29 #include "visor.h"
30
31 /*
32 * Version Information
33 */
34 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
35 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
36
37 /* function prototypes for a handspring visor */
38 static int visor_open (struct usb_serial_port *port, struct file *filp);
39 static void visor_close (struct usb_serial_port *port, struct file *filp);
40 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count);
41 static int visor_write_room (struct usb_serial_port *port);
42 static int visor_chars_in_buffer (struct usb_serial_port *port);
43 static void visor_throttle (struct usb_serial_port *port);
44 static void visor_unthrottle (struct usb_serial_port *port);
45 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id);
46 static int visor_calc_num_ports(struct usb_serial *serial);
47 static void visor_shutdown (struct usb_serial *serial);
48 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
49 static void visor_write_bulk_callback (struct urb *urb);
50 static void visor_read_bulk_callback (struct urb *urb);
51 static void visor_read_int_callback (struct urb *urb);
52 static int clie_3_5_startup (struct usb_serial *serial);
53 static int treo_attach (struct usb_serial *serial);
54 static int clie_5_attach (struct usb_serial *serial);
55 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
56 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
57
58 /* Parameters that may be passed into the module. */
59 static int debug;
60 static __u16 vendor;
61 static __u16 product;
62
63 static struct usb_device_id id_table [] = {
64 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
65 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
66 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
67 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
68 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
69 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
70 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
71 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
73 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
74 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
75 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
76 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
77 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
79 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
81 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
83 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
85 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
87 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
89 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
91 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
92 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
93 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
94 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
95 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
96 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
97 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
99 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
101 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
103 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
105 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
107 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
109 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
110 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
111 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
112 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
113 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
114 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
115 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
116 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
117 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
118 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
119 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
120 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
121 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
122 { }, /* optional parameter entry */
123 { } /* Terminating entry */
124 };
125
126 static struct usb_device_id clie_id_5_table [] = {
127 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
128 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
129 { }, /* optional parameter entry */
130 { } /* Terminating entry */
131 };
132
133 static struct usb_device_id clie_id_3_5_table [] = {
134 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
135 { } /* Terminating entry */
136 };
137
138 static struct usb_device_id id_table_combined [] = {
139 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
140 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
141 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
142 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
143 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
144 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
145 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
146 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
147 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
148 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
149 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
150 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
151 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
152 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
153 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
154 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
155 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
156 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
157 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
158 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
159 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
160 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
161 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
162 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
163 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
164 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
165 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
166 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
167 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
168 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
169 { }, /* optional parameter entry */
170 { } /* Terminating entry */
171 };
172
173 MODULE_DEVICE_TABLE (usb, id_table_combined);
174
175 static struct usb_driver visor_driver = {
176 .name = "visor",
177 .probe = usb_serial_probe,
178 .disconnect = usb_serial_disconnect,
179 .id_table = id_table_combined,
180 .no_dynamic_id = 1,
181 };
182
183 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
184 static struct usb_serial_driver handspring_device = {
185 .driver = {
186 .owner = THIS_MODULE,
187 .name = "visor",
188 },
189 .description = "Handspring Visor / Palm OS",
190 .usb_driver = &visor_driver,
191 .id_table = id_table,
192 .num_ports = 2,
193 .open = visor_open,
194 .close = visor_close,
195 .throttle = visor_throttle,
196 .unthrottle = visor_unthrottle,
197 .attach = treo_attach,
198 .probe = visor_probe,
199 .calc_num_ports = visor_calc_num_ports,
200 .shutdown = visor_shutdown,
201 .ioctl = visor_ioctl,
202 .write = visor_write,
203 .write_room = visor_write_room,
204 .chars_in_buffer = visor_chars_in_buffer,
205 .write_bulk_callback = visor_write_bulk_callback,
206 .read_bulk_callback = visor_read_bulk_callback,
207 .read_int_callback = visor_read_int_callback,
208 };
209
210 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
211 static struct usb_serial_driver clie_5_device = {
212 .driver = {
213 .owner = THIS_MODULE,
214 .name = "clie_5",
215 },
216 .description = "Sony Clie 5.0",
217 .usb_driver = &visor_driver,
218 .id_table = clie_id_5_table,
219 .num_ports = 2,
220 .open = visor_open,
221 .close = visor_close,
222 .throttle = visor_throttle,
223 .unthrottle = visor_unthrottle,
224 .attach = clie_5_attach,
225 .probe = visor_probe,
226 .calc_num_ports = visor_calc_num_ports,
227 .shutdown = visor_shutdown,
228 .ioctl = visor_ioctl,
229 .write = visor_write,
230 .write_room = visor_write_room,
231 .chars_in_buffer = visor_chars_in_buffer,
232 .write_bulk_callback = visor_write_bulk_callback,
233 .read_bulk_callback = visor_read_bulk_callback,
234 .read_int_callback = visor_read_int_callback,
235 };
236
237 /* device info for the Sony Clie OS version 3.5 */
238 static struct usb_serial_driver clie_3_5_device = {
239 .driver = {
240 .owner = THIS_MODULE,
241 .name = "clie_3.5",
242 },
243 .description = "Sony Clie 3.5",
244 .usb_driver = &visor_driver,
245 .id_table = clie_id_3_5_table,
246 .num_ports = 1,
247 .open = visor_open,
248 .close = visor_close,
249 .throttle = visor_throttle,
250 .unthrottle = visor_unthrottle,
251 .attach = clie_3_5_startup,
252 .ioctl = visor_ioctl,
253 .write = visor_write,
254 .write_room = visor_write_room,
255 .chars_in_buffer = visor_chars_in_buffer,
256 .write_bulk_callback = visor_write_bulk_callback,
257 .read_bulk_callback = visor_read_bulk_callback,
258 };
259
260 struct visor_private {
261 spinlock_t lock;
262 int bytes_in;
263 int bytes_out;
264 int outstanding_urbs;
265 unsigned char throttled;
266 unsigned char actually_throttled;
267 };
268
269 /* number of outstanding urbs to prevent userspace DoS from happening */
270 #define URB_UPPER_LIMIT 42
271
272 static int stats;
273
274 /******************************************************************************
275 * Handspring Visor specific driver functions
276 ******************************************************************************/
277 static int visor_open (struct usb_serial_port *port, struct file *filp)
278 {
279 struct usb_serial *serial = port->serial;
280 struct visor_private *priv = usb_get_serial_port_data(port);
281 unsigned long flags;
282 int result = 0;
283
284 dbg("%s - port %d", __func__, port->number);
285
286 if (!port->read_urb) {
287 /* this is needed for some brain dead Sony devices */
288 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
289 return -ENODEV;
290 }
291
292 spin_lock_irqsave(&priv->lock, flags);
293 priv->bytes_in = 0;
294 priv->bytes_out = 0;
295 priv->throttled = 0;
296 spin_unlock_irqrestore(&priv->lock, flags);
297
298 /*
299 * Force low_latency on so that our tty_push actually forces the data
300 * through, otherwise it is scheduled, and with high data rates (like
301 * with OHCI) data can get lost.
302 */
303 if (port->tty)
304 port->tty->low_latency = 1;
305
306 /* Start reading from the device */
307 usb_fill_bulk_urb (port->read_urb, serial->dev,
308 usb_rcvbulkpipe (serial->dev,
309 port->bulk_in_endpointAddress),
310 port->read_urb->transfer_buffer,
311 port->read_urb->transfer_buffer_length,
312 visor_read_bulk_callback, port);
313 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
314 if (result) {
315 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
316 __func__, result);
317 goto exit;
318 }
319
320 if (port->interrupt_in_urb) {
321 dbg("%s - adding interrupt input for treo", __func__);
322 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
323 if (result)
324 dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
325 __func__, result);
326 }
327 exit:
328 return result;
329 }
330
331
332 static void visor_close (struct usb_serial_port *port, struct file * filp)
333 {
334 struct visor_private *priv = usb_get_serial_port_data(port);
335 unsigned char *transfer_buffer;
336
337 dbg("%s - port %d", __func__, port->number);
338
339 /* shutdown our urbs */
340 usb_kill_urb(port->read_urb);
341 usb_kill_urb(port->interrupt_in_urb);
342
343 mutex_lock(&port->serial->disc_mutex);
344 if (!port->serial->disconnected) {
345 /* Try to send shutdown message, unless the device is gone */
346 transfer_buffer = kmalloc (0x12, GFP_KERNEL);
347 if (transfer_buffer) {
348 usb_control_msg (port->serial->dev,
349 usb_rcvctrlpipe(port->serial->dev, 0),
350 VISOR_CLOSE_NOTIFICATION, 0xc2,
351 0x0000, 0x0000,
352 transfer_buffer, 0x12, 300);
353 kfree (transfer_buffer);
354 }
355 }
356 mutex_unlock(&port->serial->disc_mutex);
357
358 if (stats)
359 dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
360 priv->bytes_in, priv->bytes_out);
361 }
362
363
364 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
365 {
366 struct visor_private *priv = usb_get_serial_port_data(port);
367 struct usb_serial *serial = port->serial;
368 struct urb *urb;
369 unsigned char *buffer;
370 unsigned long flags;
371 int status;
372
373 dbg("%s - port %d", __func__, port->number);
374
375 spin_lock_irqsave(&priv->lock, flags);
376 if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
377 spin_unlock_irqrestore(&priv->lock, flags);
378 dbg("%s - write limit hit\n", __func__);
379 return 0;
380 }
381 priv->outstanding_urbs++;
382 spin_unlock_irqrestore(&priv->lock, flags);
383
384 buffer = kmalloc (count, GFP_ATOMIC);
385 if (!buffer) {
386 dev_err(&port->dev, "out of memory\n");
387 count = -ENOMEM;
388 goto error_no_buffer;
389 }
390
391 urb = usb_alloc_urb(0, GFP_ATOMIC);
392 if (!urb) {
393 dev_err(&port->dev, "no more free urbs\n");
394 count = -ENOMEM;
395 goto error_no_urb;
396 }
397
398 memcpy (buffer, buf, count);
399
400 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
401
402 usb_fill_bulk_urb (urb, serial->dev,
403 usb_sndbulkpipe (serial->dev,
404 port->bulk_out_endpointAddress),
405 buffer, count,
406 visor_write_bulk_callback, port);
407
408 /* send it down the pipe */
409 status = usb_submit_urb(urb, GFP_ATOMIC);
410 if (status) {
411 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
412 __func__, status);
413 count = status;
414 goto error;
415 } else {
416 spin_lock_irqsave(&priv->lock, flags);
417 priv->bytes_out += count;
418 spin_unlock_irqrestore(&priv->lock, flags);
419 }
420
421 /* we are done with this urb, so let the host driver
422 * really free it when it is finished with it */
423 usb_free_urb(urb);
424
425 return count;
426 error:
427 usb_free_urb(urb);
428 error_no_urb:
429 kfree(buffer);
430 error_no_buffer:
431 spin_lock_irqsave(&priv->lock, flags);
432 --priv->outstanding_urbs;
433 spin_unlock_irqrestore(&priv->lock, flags);
434 return count;
435 }
436
437
438 static int visor_write_room (struct usb_serial_port *port)
439 {
440 struct visor_private *priv = usb_get_serial_port_data(port);
441 unsigned long flags;
442
443 dbg("%s - port %d", __func__, port->number);
444
445 /*
446 * We really can take anything the user throws at us
447 * but let's pick a nice big number to tell the tty
448 * layer that we have lots of free space, unless we don't.
449 */
450
451 spin_lock_irqsave(&priv->lock, flags);
452 if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
453 spin_unlock_irqrestore(&priv->lock, flags);
454 dbg("%s - write limit hit\n", __func__);
455 return 0;
456 }
457 spin_unlock_irqrestore(&priv->lock, flags);
458
459 return 2048;
460 }
461
462
463 static int visor_chars_in_buffer (struct usb_serial_port *port)
464 {
465 dbg("%s - port %d", __func__, port->number);
466
467 /*
468 * We can't really account for how much data we
469 * have sent out, but hasn't made it through to the
470 * device, so just tell the tty layer that everything
471 * is flushed.
472 *
473 * FIXME: Should walk outstanding_urbs
474 */
475 return 0;
476 }
477
478
479 static void visor_write_bulk_callback (struct urb *urb)
480 {
481 struct usb_serial_port *port = urb->context;
482 struct visor_private *priv = usb_get_serial_port_data(port);
483 int status = urb->status;
484 unsigned long flags;
485
486 /* free up the transfer buffer, as usb_free_urb() does not do this */
487 kfree (urb->transfer_buffer);
488
489 dbg("%s - port %d", __func__, port->number);
490
491 if (status)
492 dbg("%s - nonzero write bulk status received: %d",
493 __func__, status);
494
495 spin_lock_irqsave(&priv->lock, flags);
496 --priv->outstanding_urbs;
497 spin_unlock_irqrestore(&priv->lock, flags);
498
499 usb_serial_port_softint(port);
500 }
501
502
503 static void visor_read_bulk_callback (struct urb *urb)
504 {
505 struct usb_serial_port *port = urb->context;
506 struct visor_private *priv = usb_get_serial_port_data(port);
507 unsigned char *data = urb->transfer_buffer;
508 int status = urb->status;
509 struct tty_struct *tty;
510 int result;
511 int available_room;
512
513 dbg("%s - port %d", __func__, port->number);
514
515 if (status) {
516 dbg("%s - nonzero read bulk status received: %d",
517 __func__, status);
518 return;
519 }
520
521 usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data);
522
523 tty = port->tty;
524 if (tty && urb->actual_length) {
525 available_room = tty_buffer_request_room(tty, urb->actual_length);
526 if (available_room) {
527 tty_insert_flip_string(tty, data, available_room);
528 tty_flip_buffer_push(tty);
529 }
530 spin_lock(&priv->lock);
531 priv->bytes_in += available_room;
532
533 } else {
534 spin_lock(&priv->lock);
535 }
536
537 /* Continue trying to always read if we should */
538 if (!priv->throttled) {
539 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
540 usb_rcvbulkpipe(port->serial->dev,
541 port->bulk_in_endpointAddress),
542 port->read_urb->transfer_buffer,
543 port->read_urb->transfer_buffer_length,
544 visor_read_bulk_callback, port);
545 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
546 if (result)
547 dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result);
548 } else {
549 priv->actually_throttled = 1;
550 }
551 spin_unlock(&priv->lock);
552 }
553
554 static void visor_read_int_callback (struct urb *urb)
555 {
556 struct usb_serial_port *port = urb->context;
557 int status = urb->status;
558 int result;
559
560 switch (status) {
561 case 0:
562 /* success */
563 break;
564 case -ECONNRESET:
565 case -ENOENT:
566 case -ESHUTDOWN:
567 /* this urb is terminated, clean up */
568 dbg("%s - urb shutting down with status: %d",
569 __func__, status);
570 return;
571 default:
572 dbg("%s - nonzero urb status received: %d",
573 __func__, status);
574 goto exit;
575 }
576
577 /*
578 * This information is still unknown what it can be used for.
579 * If anyone has an idea, please let the author know...
580 *
581 * Rumor has it this endpoint is used to notify when data
582 * is ready to be read from the bulk ones.
583 */
584 usb_serial_debug_data(debug, &port->dev, __func__,
585 urb->actual_length, urb->transfer_buffer);
586
587 exit:
588 result = usb_submit_urb (urb, GFP_ATOMIC);
589 if (result)
590 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
591 __func__, result);
592 }
593
594 static void visor_throttle (struct usb_serial_port *port)
595 {
596 struct visor_private *priv = usb_get_serial_port_data(port);
597 unsigned long flags;
598
599 dbg("%s - port %d", __func__, port->number);
600 spin_lock_irqsave(&priv->lock, flags);
601 priv->throttled = 1;
602 spin_unlock_irqrestore(&priv->lock, flags);
603 }
604
605
606 static void visor_unthrottle (struct usb_serial_port *port)
607 {
608 struct visor_private *priv = usb_get_serial_port_data(port);
609 unsigned long flags;
610 int result;
611
612 dbg("%s - port %d", __func__, port->number);
613 spin_lock_irqsave(&priv->lock, flags);
614 priv->throttled = 0;
615 priv->actually_throttled = 0;
616 spin_unlock_irqrestore(&priv->lock, flags);
617
618 port->read_urb->dev = port->serial->dev;
619 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
620 if (result)
621 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result);
622 }
623
624 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
625 {
626 struct device *dev = &serial->dev->dev;
627 struct visor_connection_info *connection_info;
628 unsigned char *transfer_buffer;
629 char *string;
630 int retval = 0;
631 int i;
632 int num_ports = 0;
633
634 dbg("%s", __func__);
635
636 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
637 if (!transfer_buffer) {
638 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
639 sizeof(*connection_info));
640 return -ENOMEM;
641 }
642
643 /* send a get connection info request */
644 retval = usb_control_msg (serial->dev,
645 usb_rcvctrlpipe(serial->dev, 0),
646 VISOR_GET_CONNECTION_INFORMATION,
647 0xc2, 0x0000, 0x0000, transfer_buffer,
648 sizeof(*connection_info), 300);
649 if (retval < 0) {
650 dev_err(dev, "%s - error %d getting connection information\n",
651 __func__, retval);
652 goto exit;
653 }
654
655 if (retval == sizeof(*connection_info)) {
656 connection_info = (struct visor_connection_info *)transfer_buffer;
657
658 num_ports = le16_to_cpu(connection_info->num_ports);
659 for (i = 0; i < num_ports; ++i) {
660 switch (connection_info->connections[i].port_function_id) {
661 case VISOR_FUNCTION_GENERIC:
662 string = "Generic";
663 break;
664 case VISOR_FUNCTION_DEBUGGER:
665 string = "Debugger";
666 break;
667 case VISOR_FUNCTION_HOTSYNC:
668 string = "HotSync";
669 break;
670 case VISOR_FUNCTION_CONSOLE:
671 string = "Console";
672 break;
673 case VISOR_FUNCTION_REMOTE_FILE_SYS:
674 string = "Remote File System";
675 break;
676 default:
677 string = "unknown";
678 break;
679 }
680 dev_info(dev, "%s: port %d, is for %s use\n",
681 serial->type->description,
682 connection_info->connections[i].port, string);
683 }
684 }
685 /*
686 * Handle devices that report invalid stuff here.
687 */
688 if (num_ports == 0 || num_ports > 2) {
689 dev_warn (dev, "%s: No valid connect info available\n",
690 serial->type->description);
691 num_ports = 2;
692 }
693
694 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
695 num_ports);
696
697 /*
698 * save off our num_ports info so that we can use it in the
699 * calc_num_ports callback
700 */
701 usb_set_serial_data(serial, (void *)(long)num_ports);
702
703 /* ask for the number of bytes available, but ignore the response as it is broken */
704 retval = usb_control_msg (serial->dev,
705 usb_rcvctrlpipe(serial->dev, 0),
706 VISOR_REQUEST_BYTES_AVAILABLE,
707 0xc2, 0x0000, 0x0005, transfer_buffer,
708 0x02, 300);
709 if (retval < 0)
710 dev_err(dev, "%s - error %d getting bytes available request\n",
711 __func__, retval);
712 retval = 0;
713
714 exit:
715 kfree (transfer_buffer);
716
717 return retval;
718 }
719
720 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
721 {
722 struct device *dev = &serial->dev->dev;
723 struct palm_ext_connection_info *connection_info;
724 unsigned char *transfer_buffer;
725 int retval;
726
727 dbg("%s", __func__);
728
729 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
730 if (!transfer_buffer) {
731 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
732 sizeof(*connection_info));
733 return -ENOMEM;
734 }
735
736 retval = usb_control_msg (serial->dev,
737 usb_rcvctrlpipe(serial->dev, 0),
738 PALM_GET_EXT_CONNECTION_INFORMATION,
739 0xc2, 0x0000, 0x0000, transfer_buffer,
740 sizeof (*connection_info), 300);
741 if (retval < 0)
742 dev_err(dev, "%s - error %d getting connection info\n",
743 __func__, retval);
744 else
745 usb_serial_debug_data(debug, &serial->dev->dev, __func__,
746 retval, transfer_buffer);
747
748 kfree (transfer_buffer);
749 return 0;
750 }
751
752
753 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
754 {
755 int retval = 0;
756 int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
757
758 dbg("%s", __func__);
759
760 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
761 err("active config #%d != 1 ??",
762 serial->dev->actconfig->desc.bConfigurationValue);
763 return -ENODEV;
764 }
765
766 if (id->driver_info) {
767 startup = (void *)id->driver_info;
768 retval = startup(serial, id);
769 }
770
771 return retval;
772 }
773
774 static int visor_calc_num_ports (struct usb_serial *serial)
775 {
776 int num_ports = (int)(long)(usb_get_serial_data(serial));
777
778 if (num_ports)
779 usb_set_serial_data(serial, NULL);
780
781 return num_ports;
782 }
783
784 static int generic_startup(struct usb_serial *serial)
785 {
786 struct usb_serial_port **ports = serial->port;
787 struct visor_private *priv;
788 int i;
789
790 for (i = 0; i < serial->num_ports; ++i) {
791 priv = kzalloc (sizeof(*priv), GFP_KERNEL);
792 if (!priv) {
793 while (i-- != 0) {
794 priv = usb_get_serial_port_data(ports[i]);
795 usb_set_serial_port_data(ports[i], NULL);
796 kfree(priv);
797 }
798 return -ENOMEM;
799 }
800 spin_lock_init(&priv->lock);
801 usb_set_serial_port_data(ports[i], priv);
802 }
803 return 0;
804 }
805
806 static int clie_3_5_startup (struct usb_serial *serial)
807 {
808 struct device *dev = &serial->dev->dev;
809 int result;
810 u8 data;
811
812 dbg("%s", __func__);
813
814 /*
815 * Note that PEG-300 series devices expect the following two calls.
816 */
817
818 /* get the config number */
819 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
820 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
821 0, 0, &data, 1, 3000);
822 if (result < 0) {
823 dev_err(dev, "%s: get config number failed: %d\n", __func__, result);
824 return result;
825 }
826 if (result != 1) {
827 dev_err(dev, "%s: get config number bad return length: %d\n", __func__, result);
828 return -EIO;
829 }
830
831 /* get the interface number */
832 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
833 USB_REQ_GET_INTERFACE,
834 USB_DIR_IN | USB_RECIP_INTERFACE,
835 0, 0, &data, 1, 3000);
836 if (result < 0) {
837 dev_err(dev, "%s: get interface number failed: %d\n", __func__, result);
838 return result;
839 }
840 if (result != 1) {
841 dev_err(dev, "%s: get interface number bad return length: %d\n", __func__, result);
842 return -EIO;
843 }
844
845 return generic_startup(serial);
846 }
847
848 static int treo_attach (struct usb_serial *serial)
849 {
850 struct usb_serial_port *swap_port;
851
852 /* Only do this endpoint hack for the Handspring devices with
853 * interrupt in endpoints, which for now are the Treo devices. */
854 if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
855 (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
856 (serial->num_interrupt_in == 0))
857 goto generic_startup;
858
859 dbg("%s", __func__);
860
861 /*
862 * It appears that Treos and Kyoceras want to use the
863 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
864 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
865 * Note that swapping the bulk out endpoints would break lots of
866 * apps that want to communicate on the second port.
867 */
868 #define COPY_PORT(dest, src) \
869 dest->read_urb = src->read_urb; \
870 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress; \
871 dest->bulk_in_buffer = src->bulk_in_buffer; \
872 dest->interrupt_in_urb = src->interrupt_in_urb; \
873 dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
874 dest->interrupt_in_buffer = src->interrupt_in_buffer;
875
876 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
877 if (!swap_port)
878 return -ENOMEM;
879 COPY_PORT(swap_port, serial->port[0]);
880 COPY_PORT(serial->port[0], serial->port[1]);
881 COPY_PORT(serial->port[1], swap_port);
882 kfree(swap_port);
883
884 generic_startup:
885 return generic_startup(serial);
886 }
887
888 static int clie_5_attach (struct usb_serial *serial)
889 {
890 dbg("%s", __func__);
891
892 /* TH55 registers 2 ports.
893 Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
894 Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
895
896 Lets do a quick and dirty mapping
897 */
898
899 /* some sanity check */
900 if (serial->num_ports < 2)
901 return -1;
902
903 /* port 0 now uses the modified endpoint Address */
904 serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
905
906 return generic_startup(serial);
907 }
908
909 static void visor_shutdown (struct usb_serial *serial)
910 {
911 struct visor_private *priv;
912 int i;
913
914 dbg("%s", __func__);
915
916 for (i = 0; i < serial->num_ports; i++) {
917 priv = usb_get_serial_port_data(serial->port[i]);
918 if (priv) {
919 usb_set_serial_port_data(serial->port[i], NULL);
920 kfree(priv);
921 }
922 }
923 }
924
925 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
926 {
927 dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd);
928
929 return -ENOIOCTLCMD;
930 }
931
932 static int __init visor_init (void)
933 {
934 int i, retval;
935 /* Only if parameters were passed to us */
936 if ((vendor>0) && (product>0)) {
937 struct usb_device_id usb_dev_temp[]=
938 {{USB_DEVICE(vendor, product),
939 .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
940
941 /* Find the last entry in id_table */
942 for (i=0; ; i++) {
943 if (id_table[i].idVendor==0) {
944 id_table[i] = usb_dev_temp[0];
945 break;
946 }
947 }
948 /* Find the last entry in id_table_combined */
949 for (i=0; ; i++) {
950 if (id_table_combined[i].idVendor==0) {
951 id_table_combined[i] = usb_dev_temp[0];
952 break;
953 }
954 }
955 info("Untested USB device specified at time of module insertion");
956 info("Warning: This is not guaranteed to work");
957 info("Using a newer kernel is preferred to this method");
958 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
959 vendor, product);
960 }
961 retval = usb_serial_register(&handspring_device);
962 if (retval)
963 goto failed_handspring_register;
964 retval = usb_serial_register(&clie_3_5_device);
965 if (retval)
966 goto failed_clie_3_5_register;
967 retval = usb_serial_register(&clie_5_device);
968 if (retval)
969 goto failed_clie_5_register;
970 retval = usb_register(&visor_driver);
971 if (retval)
972 goto failed_usb_register;
973 info(DRIVER_DESC);
974
975 return 0;
976 failed_usb_register:
977 usb_serial_deregister(&clie_5_device);
978 failed_clie_5_register:
979 usb_serial_deregister(&clie_3_5_device);
980 failed_clie_3_5_register:
981 usb_serial_deregister(&handspring_device);
982 failed_handspring_register:
983 return retval;
984 }
985
986
987 static void __exit visor_exit (void)
988 {
989 usb_deregister (&visor_driver);
990 usb_serial_deregister (&handspring_device);
991 usb_serial_deregister (&clie_3_5_device);
992 usb_serial_deregister (&clie_5_device);
993 }
994
995
996 module_init(visor_init);
997 module_exit(visor_exit);
998
999 MODULE_AUTHOR( DRIVER_AUTHOR );
1000 MODULE_DESCRIPTION( DRIVER_DESC );
1001 MODULE_LICENSE("GPL");
1002
1003 module_param(debug, bool, S_IRUGO | S_IWUSR);
1004 MODULE_PARM_DESC(debug, "Debug enabled or not");
1005 module_param(stats, bool, S_IRUGO | S_IWUSR);
1006 MODULE_PARM_DESC(stats, "Enables statistics or not");
1007
1008 module_param(vendor, ushort, 0);
1009 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1010 module_param(product, ushort, 0);
1011 MODULE_PARM_DESC(product, "User specified product ID");
1012
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