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USB: omninet: fix write_room
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / visor.c
blob9af8c2fe0043d51d5a5e3d9841c02d0252ca2819
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
13 * driver
14 *
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/tty.h>
22 #include <linux/tty_driver.h>
23 #include <linux/tty_flip.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30 #include <linux/usb/cdc.h>
31 #include "visor.h"
32
33 /*
34 * Version Information
35 */
36 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
37 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
38
39 /* function prototypes for a handspring visor */
40 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port);
41 static void visor_close(struct usb_serial_port *port);
42 static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
43 const unsigned char *buf, int count);
44 static int visor_write_room(struct tty_struct *tty);
45 static void visor_throttle(struct tty_struct *tty);
46 static void visor_unthrottle(struct tty_struct *tty);
47 static int visor_probe(struct usb_serial *serial,
48 const struct usb_device_id *id);
49 static int visor_calc_num_ports(struct usb_serial *serial);
50 static void visor_release(struct usb_serial *serial);
51 static void visor_write_bulk_callback(struct urb *urb);
52 static void visor_read_bulk_callback(struct urb *urb);
53 static void visor_read_int_callback(struct urb *urb);
54 static int clie_3_5_startup(struct usb_serial *serial);
55 static int treo_attach(struct usb_serial *serial);
56 static int clie_5_attach(struct usb_serial *serial);
57 static int palm_os_3_probe(struct usb_serial *serial,
58 const struct usb_device_id *id);
59 static int palm_os_4_probe(struct usb_serial *serial,
60 const struct usb_device_id *id);
61
62 /* Parameters that may be passed into the module. */
63 static int debug;
64 static __u16 vendor;
65 static __u16 product;
66
67 static struct usb_device_id id_table [] = {
68 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
69 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
70 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
71 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
73 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
74 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
75 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
76 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
77 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
79 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
81 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
83 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
85 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
87 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
89 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
91 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
92 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
93 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
94 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
95 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
96 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
97 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
99 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
101 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
103 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
105 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
107 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
109 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
110 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
111 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
112 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
113 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
114 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
115 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
116 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
117 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
118 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
119 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
120 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
121 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
122 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
123 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
124 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
125 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
126 { }, /* optional parameter entry */
127 { } /* Terminating entry */
128 };
129
130 static struct usb_device_id clie_id_5_table [] = {
131 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
132 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
133 { }, /* optional parameter entry */
134 { } /* Terminating entry */
135 };
136
137 static struct usb_device_id clie_id_3_5_table [] = {
138 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
139 { } /* Terminating entry */
140 };
141
142 static struct usb_device_id id_table_combined [] = {
143 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
144 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
145 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
146 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
147 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
148 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
149 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
150 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
151 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
152 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
153 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
154 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
155 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
156 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
157 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
158 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
159 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
160 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
161 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
162 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
163 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
164 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
165 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
166 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
167 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
168 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
169 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
170 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
171 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
172 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
173 { }, /* optional parameter entry */
174 { } /* Terminating entry */
175 };
176
177 MODULE_DEVICE_TABLE(usb, id_table_combined);
178
179 static struct usb_driver visor_driver = {
180 .name = "visor",
181 .probe = usb_serial_probe,
182 .disconnect = usb_serial_disconnect,
183 .id_table = id_table_combined,
184 .no_dynamic_id = 1,
185 };
186
187 /* All of the device info needed for the Handspring Visor,
188 and Palm 4.0 devices */
189 static struct usb_serial_driver handspring_device = {
190 .driver = {
191 .owner = THIS_MODULE,
192 .name = "visor",
193 },
194 .description = "Handspring Visor / Palm OS",
195 .usb_driver = &visor_driver,
196 .id_table = id_table,
197 .num_ports = 2,
198 .open = visor_open,
199 .close = visor_close,
200 .throttle = visor_throttle,
201 .unthrottle = visor_unthrottle,
202 .attach = treo_attach,
203 .probe = visor_probe,
204 .calc_num_ports = visor_calc_num_ports,
205 .release = visor_release,
206 .write = visor_write,
207 .write_room = visor_write_room,
208 .write_bulk_callback = visor_write_bulk_callback,
209 .read_bulk_callback = visor_read_bulk_callback,
210 .read_int_callback = visor_read_int_callback,
211 };
212
213 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
214 static struct usb_serial_driver clie_5_device = {
215 .driver = {
216 .owner = THIS_MODULE,
217 .name = "clie_5",
218 },
219 .description = "Sony Clie 5.0",
220 .usb_driver = &visor_driver,
221 .id_table = clie_id_5_table,
222 .num_ports = 2,
223 .open = visor_open,
224 .close = visor_close,
225 .throttle = visor_throttle,
226 .unthrottle = visor_unthrottle,
227 .attach = clie_5_attach,
228 .probe = visor_probe,
229 .calc_num_ports = visor_calc_num_ports,
230 .release = visor_release,
231 .write = visor_write,
232 .write_room = visor_write_room,
233 .write_bulk_callback = visor_write_bulk_callback,
234 .read_bulk_callback = visor_read_bulk_callback,
235 .read_int_callback = visor_read_int_callback,
236 };
237
238 /* device info for the Sony Clie OS version 3.5 */
239 static struct usb_serial_driver clie_3_5_device = {
240 .driver = {
241 .owner = THIS_MODULE,
242 .name = "clie_3.5",
243 },
244 .description = "Sony Clie 3.5",
245 .usb_driver = &visor_driver,
246 .id_table = clie_id_3_5_table,
247 .num_ports = 1,
248 .open = visor_open,
249 .close = visor_close,
250 .throttle = visor_throttle,
251 .unthrottle = visor_unthrottle,
252 .attach = clie_3_5_startup,
253 .release = visor_release,
254 .write = visor_write,
255 .write_room = visor_write_room,
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 tty_struct *tty, struct usb_serial_port *port)
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 /* Start reading from the device */
299 usb_fill_bulk_urb(port->read_urb, serial->dev,
300 usb_rcvbulkpipe(serial->dev,
301 port->bulk_in_endpointAddress),
302 port->read_urb->transfer_buffer,
303 port->read_urb->transfer_buffer_length,
304 visor_read_bulk_callback, port);
305 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
306 if (result) {
307 dev_err(&port->dev,
308 "%s - failed submitting read urb, error %d\n",
309 __func__, result);
310 goto exit;
311 }
312
313 if (port->interrupt_in_urb) {
314 dbg("%s - adding interrupt input for treo", __func__);
315 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
316 if (result)
317 dev_err(&port->dev,
318 "%s - failed submitting interrupt urb, error %d\n",
319 __func__, result);
320 }
321 exit:
322 return result;
323 }
324
325
326 static void visor_close(struct usb_serial_port *port)
327 {
328 struct visor_private *priv = usb_get_serial_port_data(port);
329 unsigned char *transfer_buffer;
330
331 dbg("%s - port %d", __func__, port->number);
332
333 /* shutdown our urbs */
334 usb_kill_urb(port->read_urb);
335 usb_kill_urb(port->interrupt_in_urb);
336
337 mutex_lock(&port->serial->disc_mutex);
338 if (!port->serial->disconnected) {
339 /* Try to send shutdown message, unless the device is gone */
340 transfer_buffer = kmalloc(0x12, GFP_KERNEL);
341 if (transfer_buffer) {
342 usb_control_msg(port->serial->dev,
343 usb_rcvctrlpipe(port->serial->dev, 0),
344 VISOR_CLOSE_NOTIFICATION, 0xc2,
345 0x0000, 0x0000,
346 transfer_buffer, 0x12, 300);
347 kfree(transfer_buffer);
348 }
349 }
350 mutex_unlock(&port->serial->disc_mutex);
351
352 if (stats)
353 dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
354 priv->bytes_in, priv->bytes_out);
355 }
356
357
358 static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
359 const unsigned char *buf, int count)
360 {
361 struct visor_private *priv = usb_get_serial_port_data(port);
362 struct usb_serial *serial = port->serial;
363 struct urb *urb;
364 unsigned char *buffer;
365 unsigned long flags;
366 int status;
367
368 dbg("%s - port %d", __func__, port->number);
369
370 spin_lock_irqsave(&priv->lock, flags);
371 if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
372 spin_unlock_irqrestore(&priv->lock, flags);
373 dbg("%s - write limit hit\n", __func__);
374 return 0;
375 }
376 priv->outstanding_urbs++;
377 spin_unlock_irqrestore(&priv->lock, flags);
378
379 buffer = kmalloc(count, GFP_ATOMIC);
380 if (!buffer) {
381 dev_err(&port->dev, "out of memory\n");
382 count = -ENOMEM;
383 goto error_no_buffer;
384 }
385
386 urb = usb_alloc_urb(0, GFP_ATOMIC);
387 if (!urb) {
388 dev_err(&port->dev, "no more free urbs\n");
389 count = -ENOMEM;
390 goto error_no_urb;
391 }
392
393 memcpy(buffer, buf, count);
394
395 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
396
397 usb_fill_bulk_urb(urb, serial->dev,
398 usb_sndbulkpipe(serial->dev,
399 port->bulk_out_endpointAddress),
400 buffer, count,
401 visor_write_bulk_callback, port);
402
403 /* send it down the pipe */
404 status = usb_submit_urb(urb, GFP_ATOMIC);
405 if (status) {
406 dev_err(&port->dev,
407 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
408 __func__, status);
409 count = status;
410 goto error;
411 } else {
412 spin_lock_irqsave(&priv->lock, flags);
413 priv->bytes_out += count;
414 spin_unlock_irqrestore(&priv->lock, flags);
415 }
416
417 /* we are done with this urb, so let the host driver
418 * really free it when it is finished with it */
419 usb_free_urb(urb);
420
421 return count;
422 error:
423 usb_free_urb(urb);
424 error_no_urb:
425 kfree(buffer);
426 error_no_buffer:
427 spin_lock_irqsave(&priv->lock, flags);
428 --priv->outstanding_urbs;
429 spin_unlock_irqrestore(&priv->lock, flags);
430 return count;
431 }
432
433
434 static int visor_write_room(struct tty_struct *tty)
435 {
436 struct usb_serial_port *port = tty->driver_data;
437 struct visor_private *priv = usb_get_serial_port_data(port);
438 unsigned long flags;
439
440 dbg("%s - port %d", __func__, port->number);
441
442 /*
443 * We really can take anything the user throws at us
444 * but let's pick a nice big number to tell the tty
445 * layer that we have lots of free space, unless we don't.
446 */
447
448 spin_lock_irqsave(&priv->lock, flags);
449 if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
450 spin_unlock_irqrestore(&priv->lock, flags);
451 dbg("%s - write limit hit\n", __func__);
452 return 0;
453 }
454 spin_unlock_irqrestore(&priv->lock, flags);
455
456 return 2048;
457 }
458
459
460 static void visor_write_bulk_callback(struct urb *urb)
461 {
462 struct usb_serial_port *port = urb->context;
463 struct visor_private *priv = usb_get_serial_port_data(port);
464 int status = urb->status;
465 unsigned long flags;
466
467 /* free up the transfer buffer, as usb_free_urb() does not do this */
468 kfree(urb->transfer_buffer);
469
470 dbg("%s - port %d", __func__, port->number);
471
472 if (status)
473 dbg("%s - nonzero write bulk status received: %d",
474 __func__, status);
475
476 spin_lock_irqsave(&priv->lock, flags);
477 --priv->outstanding_urbs;
478 spin_unlock_irqrestore(&priv->lock, flags);
479
480 usb_serial_port_softint(port);
481 }
482
483
484 static void visor_read_bulk_callback(struct urb *urb)
485 {
486 struct usb_serial_port *port = urb->context;
487 struct visor_private *priv = usb_get_serial_port_data(port);
488 unsigned char *data = urb->transfer_buffer;
489 int status = urb->status;
490 struct tty_struct *tty;
491 int result;
492 int available_room = 0;
493
494 dbg("%s - port %d", __func__, port->number);
495
496 if (status) {
497 dbg("%s - nonzero read bulk status received: %d",
498 __func__, status);
499 return;
500 }
501
502 usb_serial_debug_data(debug, &port->dev, __func__,
503 urb->actual_length, data);
504
505 if (urb->actual_length) {
506 tty = tty_port_tty_get(&port->port);
507 if (tty) {
508 available_room = tty_buffer_request_room(tty,
509 urb->actual_length);
510 if (available_room) {
511 tty_insert_flip_string(tty, data,
512 available_room);
513 tty_flip_buffer_push(tty);
514 }
515 tty_kref_put(tty);
516 }
517 spin_lock(&priv->lock);
518 if (tty)
519 priv->bytes_in += available_room;
520
521 } else {
522 spin_lock(&priv->lock);
523 }
524
525 /* Continue trying to always read if we should */
526 if (!priv->throttled) {
527 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
528 usb_rcvbulkpipe(port->serial->dev,
529 port->bulk_in_endpointAddress),
530 port->read_urb->transfer_buffer,
531 port->read_urb->transfer_buffer_length,
532 visor_read_bulk_callback, port);
533 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
534 if (result)
535 dev_err(&port->dev,
536 "%s - failed resubmitting read urb, error %d\n",
537 __func__, result);
538 } else
539 priv->actually_throttled = 1;
540 spin_unlock(&priv->lock);
541 }
542
543 static void visor_read_int_callback(struct urb *urb)
544 {
545 struct usb_serial_port *port = urb->context;
546 int status = urb->status;
547 int result;
548
549 switch (status) {
550 case 0:
551 /* success */
552 break;
553 case -ECONNRESET:
554 case -ENOENT:
555 case -ESHUTDOWN:
556 /* this urb is terminated, clean up */
557 dbg("%s - urb shutting down with status: %d",
558 __func__, status);
559 return;
560 default:
561 dbg("%s - nonzero urb status received: %d",
562 __func__, status);
563 goto exit;
564 }
565
566 /*
567 * This information is still unknown what it can be used for.
568 * If anyone has an idea, please let the author know...
569 *
570 * Rumor has it this endpoint is used to notify when data
571 * is ready to be read from the bulk ones.
572 */
573 usb_serial_debug_data(debug, &port->dev, __func__,
574 urb->actual_length, urb->transfer_buffer);
575
576 exit:
577 result = usb_submit_urb(urb, GFP_ATOMIC);
578 if (result)
579 dev_err(&urb->dev->dev,
580 "%s - Error %d submitting interrupt urb\n",
581 __func__, result);
582 }
583
584 static void visor_throttle(struct tty_struct *tty)
585 {
586 struct usb_serial_port *port = tty->driver_data;
587 struct visor_private *priv = usb_get_serial_port_data(port);
588
589 dbg("%s - port %d", __func__, port->number);
590 spin_lock_irq(&priv->lock);
591 priv->throttled = 1;
592 spin_unlock_irq(&priv->lock);
593 }
594
595
596 static void visor_unthrottle(struct tty_struct *tty)
597 {
598 struct usb_serial_port *port = tty->driver_data;
599 struct visor_private *priv = usb_get_serial_port_data(port);
600 int result, was_throttled;
601
602 dbg("%s - port %d", __func__, port->number);
603 spin_lock_irq(&priv->lock);
604 priv->throttled = 0;
605 was_throttled = priv->actually_throttled;
606 priv->actually_throttled = 0;
607 spin_unlock_irq(&priv->lock);
608
609 if (was_throttled) {
610 port->read_urb->dev = port->serial->dev;
611 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
612 if (result)
613 dev_err(&port->dev,
614 "%s - failed submitting read urb, error %d\n",
615 __func__, result);
616 }
617 }
618
619 static int palm_os_3_probe(struct usb_serial *serial,
620 const struct usb_device_id *id)
621 {
622 struct device *dev = &serial->dev->dev;
623 struct visor_connection_info *connection_info;
624 unsigned char *transfer_buffer;
625 char *string;
626 int retval = 0;
627 int i;
628 int num_ports = 0;
629
630 dbg("%s", __func__);
631
632 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
633 if (!transfer_buffer) {
634 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
635 sizeof(*connection_info));
636 return -ENOMEM;
637 }
638
639 /* send a get connection info request */
640 retval = usb_control_msg(serial->dev,
641 usb_rcvctrlpipe(serial->dev, 0),
642 VISOR_GET_CONNECTION_INFORMATION,
643 0xc2, 0x0000, 0x0000, transfer_buffer,
644 sizeof(*connection_info), 300);
645 if (retval < 0) {
646 dev_err(dev, "%s - error %d getting connection information\n",
647 __func__, retval);
648 goto exit;
649 }
650
651 if (retval == sizeof(*connection_info)) {
652 connection_info = (struct visor_connection_info *)
653 transfer_buffer;
654
655 num_ports = le16_to_cpu(connection_info->num_ports);
656 for (i = 0; i < num_ports; ++i) {
657 switch (
658 connection_info->connections[i].port_function_id) {
659 case VISOR_FUNCTION_GENERIC:
660 string = "Generic";
661 break;
662 case VISOR_FUNCTION_DEBUGGER:
663 string = "Debugger";
664 break;
665 case VISOR_FUNCTION_HOTSYNC:
666 string = "HotSync";
667 break;
668 case VISOR_FUNCTION_CONSOLE:
669 string = "Console";
670 break;
671 case VISOR_FUNCTION_REMOTE_FILE_SYS:
672 string = "Remote File System";
673 break;
674 default:
675 string = "unknown";
676 break;
677 }
678 dev_info(dev, "%s: port %d, is for %s use\n",
679 serial->type->description,
680 connection_info->connections[i].port, string);
681 }
682 }
683 /*
684 * Handle devices that report invalid stuff here.
685 */
686 if (num_ports == 0 || num_ports > 2) {
687 dev_warn(dev, "%s: No valid connect info available\n",
688 serial->type->description);
689 num_ports = 2;
690 }
691
692 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
693 num_ports);
694
695 /*
696 * save off our num_ports info so that we can use it in the
697 * calc_num_ports callback
698 */
699 usb_set_serial_data(serial, (void *)(long)num_ports);
700
701 /* ask for the number of bytes available, but ignore the
702 response as it is broken */
703 retval = usb_control_msg(serial->dev,
704 usb_rcvctrlpipe(serial->dev, 0),
705 VISOR_REQUEST_BYTES_AVAILABLE,
706 0xc2, 0x0000, 0x0005, transfer_buffer,
707 0x02, 300);
708 if (retval < 0)
709 dev_err(dev, "%s - error %d getting bytes available request\n",
710 __func__, retval);
711 retval = 0;
712
713 exit:
714 kfree(transfer_buffer);
715
716 return retval;
717 }
718
719 static int palm_os_4_probe(struct usb_serial *serial,
720 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,
754 const struct usb_device_id *id)
755 {
756 int retval = 0;
757 int (*startup)(struct usb_serial *serial,
758 const struct usb_device_id *id);
759
760 dbg("%s", __func__);
761
762 /*
763 * some Samsung Android phones in modem mode have the same ID
764 * as SPH-I500, but they are ACM devices, so dont bind to them
765 */
766 if (id->idVendor == SAMSUNG_VENDOR_ID &&
767 id->idProduct == SAMSUNG_SPH_I500_ID &&
768 serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
769 serial->dev->descriptor.bDeviceSubClass ==
770 USB_CDC_SUBCLASS_ACM)
771 return -ENODEV;
772
773 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
774 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
775 serial->dev->actconfig->desc.bConfigurationValue);
776 return -ENODEV;
777 }
778
779 if (id->driver_info) {
780 startup = (void *)id->driver_info;
781 retval = startup(serial, id);
782 }
783
784 return retval;
785 }
786
787 static int visor_calc_num_ports(struct usb_serial *serial)
788 {
789 int num_ports = (int)(long)(usb_get_serial_data(serial));
790
791 if (num_ports)
792 usb_set_serial_data(serial, NULL);
793
794 return num_ports;
795 }
796
797 static int generic_startup(struct usb_serial *serial)
798 {
799 struct usb_serial_port **ports = serial->port;
800 struct visor_private *priv;
801 int i;
802
803 for (i = 0; i < serial->num_ports; ++i) {
804 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
805 if (!priv) {
806 while (i-- != 0) {
807 priv = usb_get_serial_port_data(ports[i]);
808 usb_set_serial_port_data(ports[i], NULL);
809 kfree(priv);
810 }
811 return -ENOMEM;
812 }
813 spin_lock_init(&priv->lock);
814 usb_set_serial_port_data(ports[i], priv);
815 }
816 return 0;
817 }
818
819 static int clie_3_5_startup(struct usb_serial *serial)
820 {
821 struct device *dev = &serial->dev->dev;
822 int result;
823 u8 data;
824
825 dbg("%s", __func__);
826
827 /*
828 * Note that PEG-300 series devices expect the following two calls.
829 */
830
831 /* get the config number */
832 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
833 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
834 0, 0, &data, 1, 3000);
835 if (result < 0) {
836 dev_err(dev, "%s: get config number failed: %d\n",
837 __func__, result);
838 return result;
839 }
840 if (result != 1) {
841 dev_err(dev, "%s: get config number bad return length: %d\n",
842 __func__, result);
843 return -EIO;
844 }
845
846 /* get the interface number */
847 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
848 USB_REQ_GET_INTERFACE,
849 USB_DIR_IN | USB_RECIP_INTERFACE,
850 0, 0, &data, 1, 3000);
851 if (result < 0) {
852 dev_err(dev, "%s: get interface number failed: %d\n",
853 __func__, result);
854 return result;
855 }
856 if (result != 1) {
857 dev_err(dev,
858 "%s: get interface number bad return length: %d\n",
859 __func__, result);
860 return -EIO;
861 }
862
863 return generic_startup(serial);
864 }
865
866 static int treo_attach(struct usb_serial *serial)
867 {
868 struct usb_serial_port *swap_port;
869
870 /* Only do this endpoint hack for the Handspring devices with
871 * interrupt in endpoints, which for now are the Treo devices. */
872 if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
873 == HANDSPRING_VENDOR_ID) ||
874 (le16_to_cpu(serial->dev->descriptor.idVendor)
875 == KYOCERA_VENDOR_ID)) ||
876 (serial->num_interrupt_in == 0))
877 goto generic_startup;
878
879 dbg("%s", __func__);
880
881 /*
882 * It appears that Treos and Kyoceras want to use the
883 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
884 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
885 * Note that swapping the bulk out endpoints would break lots of
886 * apps that want to communicate on the second port.
887 */
888 #define COPY_PORT(dest, src) \
889 do { \
890 dest->read_urb = src->read_urb; \
891 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
892 dest->bulk_in_buffer = src->bulk_in_buffer; \
893 dest->interrupt_in_urb = src->interrupt_in_urb; \
894 dest->interrupt_in_endpointAddress = \
895 src->interrupt_in_endpointAddress;\
896 dest->interrupt_in_buffer = src->interrupt_in_buffer; \
897 } while (0);
898
899 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
900 if (!swap_port)
901 return -ENOMEM;
902 COPY_PORT(swap_port, serial->port[0]);
903 COPY_PORT(serial->port[0], serial->port[1]);
904 COPY_PORT(serial->port[1], swap_port);
905 kfree(swap_port);
906
907 generic_startup:
908 return generic_startup(serial);
909 }
910
911 static int clie_5_attach(struct usb_serial *serial)
912 {
913 dbg("%s", __func__);
914
915 /* TH55 registers 2 ports.
916 Communication in from the UX50/TH55 uses bulk_in_endpointAddress
917 from port 0. Communication out to the UX50/TH55 uses
918 bulk_out_endpointAddress from port 1
919
920 Lets do a quick and dirty mapping
921 */
922
923 /* some sanity check */
924 if (serial->num_ports < 2)
925 return -1;
926
927 /* port 0 now uses the modified endpoint Address */
928 serial->port[0]->bulk_out_endpointAddress =
929 serial->port[1]->bulk_out_endpointAddress;
930
931 return generic_startup(serial);
932 }
933
934 static void visor_release(struct usb_serial *serial)
935 {
936 struct visor_private *priv;
937 int i;
938
939 dbg("%s", __func__);
940
941 for (i = 0; i < serial->num_ports; i++) {
942 priv = usb_get_serial_port_data(serial->port[i]);
943 kfree(priv);
944 }
945 }
946
947 static int __init visor_init(void)
948 {
949 int i, retval;
950 /* Only if parameters were passed to us */
951 if (vendor > 0 && product > 0) {
952 struct usb_device_id usb_dev_temp[] = {
953 {
954 USB_DEVICE(vendor, product),
955 .driver_info =
956 (kernel_ulong_t) &palm_os_4_probe
957 }
958 };
959
960 /* Find the last entry in id_table */
961 for (i = 0;; i++) {
962 if (id_table[i].idVendor == 0) {
963 id_table[i] = usb_dev_temp[0];
964 break;
965 }
966 }
967 /* Find the last entry in id_table_combined */
968 for (i = 0;; i++) {
969 if (id_table_combined[i].idVendor == 0) {
970 id_table_combined[i] = usb_dev_temp[0];
971 break;
972 }
973 }
974 printk(KERN_INFO KBUILD_MODNAME
975 ": Untested USB device specified at time of module insertion\n");
976 printk(KERN_INFO KBUILD_MODNAME
977 ": Warning: This is not guaranteed to work\n");
978 printk(KERN_INFO KBUILD_MODNAME
979 ": Using a newer kernel is preferred to this method\n");
980 printk(KERN_INFO KBUILD_MODNAME
981 ": Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x\n",
982 vendor, product);
983 }
984 retval = usb_serial_register(&handspring_device);
985 if (retval)
986 goto failed_handspring_register;
987 retval = usb_serial_register(&clie_3_5_device);
988 if (retval)
989 goto failed_clie_3_5_register;
990 retval = usb_serial_register(&clie_5_device);
991 if (retval)
992 goto failed_clie_5_register;
993 retval = usb_register(&visor_driver);
994 if (retval)
995 goto failed_usb_register;
996 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
997
998 return 0;
999 failed_usb_register:
1000 usb_serial_deregister(&clie_5_device);
1001 failed_clie_5_register:
1002 usb_serial_deregister(&clie_3_5_device);
1003 failed_clie_3_5_register:
1004 usb_serial_deregister(&handspring_device);
1005 failed_handspring_register:
1006 return retval;
1007 }
1008
1009
1010 static void __exit visor_exit (void)
1011 {
1012 usb_deregister(&visor_driver);
1013 usb_serial_deregister(&handspring_device);
1014 usb_serial_deregister(&clie_3_5_device);
1015 usb_serial_deregister(&clie_5_device);
1016 }
1017
1018
1019 module_init(visor_init);
1020 module_exit(visor_exit);
1021
1022 MODULE_AUTHOR(DRIVER_AUTHOR);
1023 MODULE_DESCRIPTION(DRIVER_DESC);
1024 MODULE_LICENSE("GPL");
1025
1026 module_param(debug, bool, S_IRUGO | S_IWUSR);
1027 MODULE_PARM_DESC(debug, "Debug enabled or not");
1028 module_param(stats, bool, S_IRUGO | S_IWUSR);
1029 MODULE_PARM_DESC(stats, "Enables statistics or not");
1030
1031 module_param(vendor, ushort, 0);
1032 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1033 module_param(product, ushort, 0);
1034 MODULE_PARM_DESC(product, "User specified product ID");
1035
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree