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USB: serial: remove unneeded number endpoints settings
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / serial / visor.c
blobf2d59b06c3644a2b47cd8fca769cf0bbc9a584a6
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", __FUNCTION__, 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 __FUNCTION__, result);
317 goto exit;
318 }
319
320 if (port->interrupt_in_urb) {
321 dbg("%s - adding interrupt input for treo", __FUNCTION__);
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 __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__);
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, __FUNCTION__, 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 __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__);
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", __FUNCTION__, 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 return 0;
474 }
475
476
477 static void visor_write_bulk_callback (struct urb *urb)
478 {
479 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
480 struct visor_private *priv = usb_get_serial_port_data(port);
481 int status = urb->status;
482 unsigned long flags;
483
484 /* free up the transfer buffer, as usb_free_urb() does not do this */
485 kfree (urb->transfer_buffer);
486
487 dbg("%s - port %d", __FUNCTION__, port->number);
488
489 if (status)
490 dbg("%s - nonzero write bulk status received: %d",
491 __FUNCTION__, status);
492
493 spin_lock_irqsave(&priv->lock, flags);
494 --priv->outstanding_urbs;
495 spin_unlock_irqrestore(&priv->lock, flags);
496
497 usb_serial_port_softint(port);
498 }
499
500
501 static void visor_read_bulk_callback (struct urb *urb)
502 {
503 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
504 struct visor_private *priv = usb_get_serial_port_data(port);
505 unsigned char *data = urb->transfer_buffer;
506 int status = urb->status;
507 struct tty_struct *tty;
508 int result;
509 int available_room;
510
511 dbg("%s - port %d", __FUNCTION__, port->number);
512
513 if (status) {
514 dbg("%s - nonzero read bulk status received: %d",
515 __FUNCTION__, status);
516 return;
517 }
518
519 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
520
521 tty = port->tty;
522 if (tty && urb->actual_length) {
523 available_room = tty_buffer_request_room(tty, urb->actual_length);
524 if (available_room) {
525 tty_insert_flip_string(tty, data, available_room);
526 tty_flip_buffer_push(tty);
527 }
528 spin_lock(&priv->lock);
529 priv->bytes_in += available_room;
530
531 } else {
532 spin_lock(&priv->lock);
533 }
534
535 /* Continue trying to always read if we should */
536 if (!priv->throttled) {
537 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
538 usb_rcvbulkpipe(port->serial->dev,
539 port->bulk_in_endpointAddress),
540 port->read_urb->transfer_buffer,
541 port->read_urb->transfer_buffer_length,
542 visor_read_bulk_callback, port);
543 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
544 if (result)
545 dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
546 } else {
547 priv->actually_throttled = 1;
548 }
549 spin_unlock(&priv->lock);
550 }
551
552 static void visor_read_int_callback (struct urb *urb)
553 {
554 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
555 int status = urb->status;
556 int result;
557
558 switch (status) {
559 case 0:
560 /* success */
561 break;
562 case -ECONNRESET:
563 case -ENOENT:
564 case -ESHUTDOWN:
565 /* this urb is terminated, clean up */
566 dbg("%s - urb shutting down with status: %d",
567 __FUNCTION__, status);
568 return;
569 default:
570 dbg("%s - nonzero urb status received: %d",
571 __FUNCTION__, status);
572 goto exit;
573 }
574
575 /*
576 * This information is still unknown what it can be used for.
577 * If anyone has an idea, please let the author know...
578 *
579 * Rumor has it this endpoint is used to notify when data
580 * is ready to be read from the bulk ones.
581 */
582 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
583 urb->actual_length, urb->transfer_buffer);
584
585 exit:
586 result = usb_submit_urb (urb, GFP_ATOMIC);
587 if (result)
588 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
589 __FUNCTION__, result);
590 }
591
592 static void visor_throttle (struct usb_serial_port *port)
593 {
594 struct visor_private *priv = usb_get_serial_port_data(port);
595 unsigned long flags;
596
597 dbg("%s - port %d", __FUNCTION__, port->number);
598 spin_lock_irqsave(&priv->lock, flags);
599 priv->throttled = 1;
600 spin_unlock_irqrestore(&priv->lock, flags);
601 }
602
603
604 static void visor_unthrottle (struct usb_serial_port *port)
605 {
606 struct visor_private *priv = usb_get_serial_port_data(port);
607 unsigned long flags;
608 int result;
609
610 dbg("%s - port %d", __FUNCTION__, port->number);
611 spin_lock_irqsave(&priv->lock, flags);
612 priv->throttled = 0;
613 priv->actually_throttled = 0;
614 spin_unlock_irqrestore(&priv->lock, flags);
615
616 port->read_urb->dev = port->serial->dev;
617 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
618 if (result)
619 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
620 }
621
622 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
623 {
624 struct device *dev = &serial->dev->dev;
625 struct visor_connection_info *connection_info;
626 unsigned char *transfer_buffer;
627 char *string;
628 int retval = 0;
629 int i;
630 int num_ports = 0;
631
632 dbg("%s", __FUNCTION__);
633
634 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
635 if (!transfer_buffer) {
636 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
637 sizeof(*connection_info));
638 return -ENOMEM;
639 }
640
641 /* send a get connection info request */
642 retval = usb_control_msg (serial->dev,
643 usb_rcvctrlpipe(serial->dev, 0),
644 VISOR_GET_CONNECTION_INFORMATION,
645 0xc2, 0x0000, 0x0000, transfer_buffer,
646 sizeof(*connection_info), 300);
647 if (retval < 0) {
648 dev_err(dev, "%s - error %d getting connection information\n",
649 __FUNCTION__, retval);
650 goto exit;
651 }
652
653 if (retval == sizeof(*connection_info)) {
654 connection_info = (struct visor_connection_info *)transfer_buffer;
655
656 num_ports = le16_to_cpu(connection_info->num_ports);
657 for (i = 0; i < num_ports; ++i) {
658 switch (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 response as it is broken */
702 retval = usb_control_msg (serial->dev,
703 usb_rcvctrlpipe(serial->dev, 0),
704 VISOR_REQUEST_BYTES_AVAILABLE,
705 0xc2, 0x0000, 0x0005, transfer_buffer,
706 0x02, 300);
707 if (retval < 0)
708 dev_err(dev, "%s - error %d getting bytes available request\n",
709 __FUNCTION__, retval);
710 retval = 0;
711
712 exit:
713 kfree (transfer_buffer);
714
715 return retval;
716 }
717
718 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
719 {
720 struct device *dev = &serial->dev->dev;
721 struct palm_ext_connection_info *connection_info;
722 unsigned char *transfer_buffer;
723 int retval;
724
725 dbg("%s", __FUNCTION__);
726
727 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
728 if (!transfer_buffer) {
729 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
730 sizeof(*connection_info));
731 return -ENOMEM;
732 }
733
734 retval = usb_control_msg (serial->dev,
735 usb_rcvctrlpipe(serial->dev, 0),
736 PALM_GET_EXT_CONNECTION_INFORMATION,
737 0xc2, 0x0000, 0x0000, transfer_buffer,
738 sizeof (*connection_info), 300);
739 if (retval < 0)
740 dev_err(dev, "%s - error %d getting connection info\n",
741 __FUNCTION__, retval);
742 else
743 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
744 retval, transfer_buffer);
745
746 kfree (transfer_buffer);
747 return 0;
748 }
749
750
751 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
752 {
753 int retval = 0;
754 int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
755
756 dbg("%s", __FUNCTION__);
757
758 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
759 err("active config #%d != 1 ??",
760 serial->dev->actconfig->desc.bConfigurationValue);
761 return -ENODEV;
762 }
763
764 if (id->driver_info) {
765 startup = (void *)id->driver_info;
766 retval = startup(serial, id);
767 }
768
769 return retval;
770 }
771
772 static int visor_calc_num_ports (struct usb_serial *serial)
773 {
774 int num_ports = (int)(long)(usb_get_serial_data(serial));
775
776 if (num_ports)
777 usb_set_serial_data(serial, NULL);
778
779 return num_ports;
780 }
781
782 static int generic_startup(struct usb_serial *serial)
783 {
784 struct usb_serial_port **ports = serial->port;
785 struct visor_private *priv;
786 int i;
787
788 for (i = 0; i < serial->num_ports; ++i) {
789 priv = kzalloc (sizeof(*priv), GFP_KERNEL);
790 if (!priv) {
791 while (i-- != 0) {
792 priv = usb_get_serial_port_data(ports[i]);
793 usb_set_serial_port_data(ports[i], NULL);
794 kfree(priv);
795 }
796 return -ENOMEM;
797 }
798 spin_lock_init(&priv->lock);
799 usb_set_serial_port_data(ports[i], priv);
800 }
801 return 0;
802 }
803
804 static int clie_3_5_startup (struct usb_serial *serial)
805 {
806 struct device *dev = &serial->dev->dev;
807 int result;
808 u8 data;
809
810 dbg("%s", __FUNCTION__);
811
812 /*
813 * Note that PEG-300 series devices expect the following two calls.
814 */
815
816 /* get the config number */
817 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
818 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
819 0, 0, &data, 1, 3000);
820 if (result < 0) {
821 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
822 return result;
823 }
824 if (result != 1) {
825 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
826 return -EIO;
827 }
828
829 /* get the interface number */
830 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
831 USB_REQ_GET_INTERFACE,
832 USB_DIR_IN | USB_RECIP_INTERFACE,
833 0, 0, &data, 1, 3000);
834 if (result < 0) {
835 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
836 return result;
837 }
838 if (result != 1) {
839 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, result);
840 return -EIO;
841 }
842
843 return generic_startup(serial);
844 }
845
846 static int treo_attach (struct usb_serial *serial)
847 {
848 struct usb_serial_port *swap_port;
849
850 /* Only do this endpoint hack for the Handspring devices with
851 * interrupt in endpoints, which for now are the Treo devices. */
852 if (!((le16_to_cpu(serial->dev->descriptor.idVendor) == HANDSPRING_VENDOR_ID) ||
853 (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
854 (serial->num_interrupt_in == 0))
855 goto generic_startup;
856
857 dbg("%s", __FUNCTION__);
858
859 /*
860 * It appears that Treos and Kyoceras want to use the
861 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
862 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
863 * Note that swapping the bulk out endpoints would break lots of
864 * apps that want to communicate on the second port.
865 */
866 #define COPY_PORT(dest, src) \
867 dest->read_urb = src->read_urb; \
868 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress; \
869 dest->bulk_in_buffer = src->bulk_in_buffer; \
870 dest->interrupt_in_urb = src->interrupt_in_urb; \
871 dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
872 dest->interrupt_in_buffer = src->interrupt_in_buffer;
873
874 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
875 if (!swap_port)
876 return -ENOMEM;
877 COPY_PORT(swap_port, serial->port[0]);
878 COPY_PORT(serial->port[0], serial->port[1]);
879 COPY_PORT(serial->port[1], swap_port);
880 kfree(swap_port);
881
882 generic_startup:
883 return generic_startup(serial);
884 }
885
886 static int clie_5_attach (struct usb_serial *serial)
887 {
888 dbg("%s", __FUNCTION__);
889
890 /* TH55 registers 2 ports.
891 Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
892 Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
893
894 Lets do a quick and dirty mapping
895 */
896
897 /* some sanity check */
898 if (serial->num_ports < 2)
899 return -1;
900
901 /* port 0 now uses the modified endpoint Address */
902 serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
903
904 return generic_startup(serial);
905 }
906
907 static void visor_shutdown (struct usb_serial *serial)
908 {
909 struct visor_private *priv;
910 int i;
911
912 dbg("%s", __FUNCTION__);
913
914 for (i = 0; i < serial->num_ports; i++) {
915 priv = usb_get_serial_port_data(serial->port[i]);
916 if (priv) {
917 usb_set_serial_port_data(serial->port[i], NULL);
918 kfree(priv);
919 }
920 }
921 }
922
923 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
924 {
925 dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
926
927 return -ENOIOCTLCMD;
928 }
929
930 static int __init visor_init (void)
931 {
932 int i, retval;
933 /* Only if parameters were passed to us */
934 if ((vendor>0) && (product>0)) {
935 struct usb_device_id usb_dev_temp[]=
936 {{USB_DEVICE(vendor, product),
937 .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
938
939 /* Find the last entry in id_table */
940 for (i=0; ; i++) {
941 if (id_table[i].idVendor==0) {
942 id_table[i] = usb_dev_temp[0];
943 break;
944 }
945 }
946 /* Find the last entry in id_table_combined */
947 for (i=0; ; i++) {
948 if (id_table_combined[i].idVendor==0) {
949 id_table_combined[i] = usb_dev_temp[0];
950 break;
951 }
952 }
953 info("Untested USB device specified at time of module insertion");
954 info("Warning: This is not guaranteed to work");
955 info("Using a newer kernel is preferred to this method");
956 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
957 vendor, product);
958 }
959 retval = usb_serial_register(&handspring_device);
960 if (retval)
961 goto failed_handspring_register;
962 retval = usb_serial_register(&clie_3_5_device);
963 if (retval)
964 goto failed_clie_3_5_register;
965 retval = usb_serial_register(&clie_5_device);
966 if (retval)
967 goto failed_clie_5_register;
968 retval = usb_register(&visor_driver);
969 if (retval)
970 goto failed_usb_register;
971 info(DRIVER_DESC);
972
973 return 0;
974 failed_usb_register:
975 usb_serial_deregister(&clie_5_device);
976 failed_clie_5_register:
977 usb_serial_deregister(&clie_3_5_device);
978 failed_clie_3_5_register:
979 usb_serial_deregister(&handspring_device);
980 failed_handspring_register:
981 return retval;
982 }
983
984
985 static void __exit visor_exit (void)
986 {
987 usb_deregister (&visor_driver);
988 usb_serial_deregister (&handspring_device);
989 usb_serial_deregister (&clie_3_5_device);
990 usb_serial_deregister (&clie_5_device);
991 }
992
993
994 module_init(visor_init);
995 module_exit(visor_exit);
996
997 MODULE_AUTHOR( DRIVER_AUTHOR );
998 MODULE_DESCRIPTION( DRIVER_DESC );
999 MODULE_LICENSE("GPL");
1000
1001 module_param(debug, bool, S_IRUGO | S_IWUSR);
1002 MODULE_PARM_DESC(debug, "Debug enabled or not");
1003 module_param(stats, bool, S_IRUGO | S_IWUSR);
1004 MODULE_PARM_DESC(stats, "Enables statistics or not");
1005
1006 module_param(vendor, ushort, 0);
1007 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1008 module_param(product, ushort, 0);
1009 MODULE_PARM_DESC(product, "User specified product ID");
1010
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree