Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[PATCH] USB: add Option Card driver
This patch adds a new driver for "Option" cards. This is a GSM data card,
controlled by three "serial ports" which are connected via an OHCI adapter,
all located on an oversized PC-Card. It's sold by several GSM service
providers.
Traditionally, this card has been accessed via the standard serial driver
and appropriate vendor= and product= options. However, testing has
revealed several problems with this approach, including hung data transfers
and lost data blocks when receiving.
Therefore, I've written a separate driver.
Signed-off-by: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
authored by
Matthias Urlichs
and committed by
Greg KH
58cfe911
4871d3be
+741
+11
drivers/usb/serial/Kconfig
+11
drivers/usb/serial/Kconfig
···
455
455
To compile this driver as a module, choose M here: the
456
456
module will be called keyspan_pda.
457
457
458
+
config USB_SERIAL_OPTION
459
+
tristate "USB Option PCMCIA serial driver"
460
+
depends on USB_SERIAL && USB_OHCI_HCD && PCCARD
461
+
help
462
+
Say Y here if you want to use an Option card. This is a
463
+
GSM card, controlled by three serial ports which are connected
464
+
via an OHCI adapter located on a PC card.
465
+
466
+
To compile this driver as a module, choose M here: the
467
+
module will be called option.
468
+
458
469
config USB_SERIAL_OMNINET
459
470
tristate "USB ZyXEL omni.net LCD Plus Driver (EXPERIMENTAL)"
460
471
depends on USB_SERIAL && EXPERIMENTAL
+1
drivers/usb/serial/Makefile
+1
drivers/usb/serial/Makefile
···
32
32
obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o
33
33
obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o
34
34
obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o
35
+
obj-$(CONFIG_USB_SERIAL_OPTION) += option.o
35
36
obj-$(CONFIG_USB_SERIAL_PL2303) += pl2303.o
36
37
obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
37
38
obj-$(CONFIG_USB_SERIAL_TI) += ti_usb_3410_5052.o
+729
drivers/usb/serial/option.c
+729
drivers/usb/serial/option.c
···
1
+
/*
2
+
Option Card (PCMCIA to) USB to Serial Driver
3
+
4
+
Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de>
5
+
6
+
This driver is free software; you can redistribute it and/or modify
7
+
it under the terms of Version 2 of the GNU General Public License as
8
+
published by the Free Software Foundation.
9
+
10
+
Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org>
11
+
12
+
History:
13
+
14
+
2005-05-19 v0.1 Initial version, based on incomplete docs
15
+
and analysis of misbehavior of the standard driver
16
+
2005-05-20 v0.2 Extended the input buffer to avoid losing
17
+
random 64-byte chunks of data
18
+
2005-05-21 v0.3 implemented chars_in_buffer()
19
+
turned on low_latency
20
+
simplified the code somewhat
21
+
*/
22
+
#define DRIVER_VERSION "v0.3"
23
+
#define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
24
+
#define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver"
25
+
26
+
#include <linux/config.h>
27
+
#include <linux/kernel.h>
28
+
#include <linux/jiffies.h>
29
+
#include <linux/errno.h>
30
+
#include <linux/tty.h>
31
+
#include <linux/tty_flip.h>
32
+
#include <linux/module.h>
33
+
#include <linux/usb.h>
34
+
#include "usb-serial.h"
35
+
36
+
/* Function prototypes */
37
+
static int option_open (struct usb_serial_port *port, struct file *filp);
38
+
static void option_close (struct usb_serial_port *port, struct file *filp);
39
+
static int option_startup (struct usb_serial *serial);
40
+
static void option_shutdown (struct usb_serial *serial);
41
+
static void option_rx_throttle (struct usb_serial_port *port);
42
+
static void option_rx_unthrottle (struct usb_serial_port *port);
43
+
static int option_write_room (struct usb_serial_port *port);
44
+
45
+
static void option_instat_callback(struct urb *urb, struct pt_regs *regs);
46
+
47
+
48
+
static int option_write (struct usb_serial_port *port,
49
+
const unsigned char *buf, int count);
50
+
51
+
static int option_chars_in_buffer (struct usb_serial_port *port);
52
+
static int option_ioctl (struct usb_serial_port *port, struct file *file,
53
+
unsigned int cmd, unsigned long arg);
54
+
static void option_set_termios (struct usb_serial_port *port,
55
+
struct termios *old);
56
+
static void option_break_ctl (struct usb_serial_port *port, int break_state);
57
+
static int option_tiocmget (struct usb_serial_port *port, struct file *file);
58
+
static int option_tiocmset (struct usb_serial_port *port, struct file *file,
59
+
unsigned int set, unsigned int clear);
60
+
static int option_send_setup (struct usb_serial_port *port);
61
+
62
+
/* Vendor and product IDs */
63
+
#define OPTION_VENDOR_ID 0x0AF0
64
+
65
+
#define OPTION_PRODUCT_OLD 0x5000
66
+
#define OPTION_PRODUCT_WLAN 0x6000
67
+
68
+
static struct usb_device_id option_ids[] = {
69
+
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
70
+
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_WLAN) },
71
+
{ } /* Terminating entry */
72
+
};
73
+
74
+
MODULE_DEVICE_TABLE(usb, option_ids);
75
+
76
+
static struct usb_driver option_driver = {
77
+
.owner = THIS_MODULE,
78
+
.name = "option",
79
+
.probe = usb_serial_probe,
80
+
.disconnect = usb_serial_disconnect,
81
+
.id_table = option_ids,
82
+
};
83
+
84
+
/* The card has three separate interfaces, wich the serial driver
85
+
* recognizes separately, thus num_port=1.
86
+
*/
87
+
static struct usb_serial_device_type option_3port_device = {
88
+
.owner = THIS_MODULE,
89
+
.name = "Option 3-port card",
90
+
.short_name = "option",
91
+
.id_table = option_ids,
92
+
.num_interrupt_in = NUM_DONT_CARE,
93
+
.num_bulk_in = NUM_DONT_CARE,
94
+
.num_bulk_out = NUM_DONT_CARE,
95
+
.num_ports = 1, /* 3 */
96
+
.open = option_open,
97
+
.close = option_close,
98
+
.write = option_write,
99
+
.write_room = option_write_room,
100
+
.chars_in_buffer = option_chars_in_buffer,
101
+
.throttle = option_rx_throttle,
102
+
.unthrottle = option_rx_unthrottle,
103
+
.ioctl = option_ioctl,
104
+
.set_termios = option_set_termios,
105
+
.break_ctl = option_break_ctl,
106
+
.tiocmget = option_tiocmget,
107
+
.tiocmset = option_tiocmset,
108
+
.attach = option_startup,
109
+
.shutdown = option_shutdown,
110
+
.read_int_callback = option_instat_callback,
111
+
};
112
+
113
+
static int debug;
114
+
115
+
/* per port private data */
116
+
117
+
#define N_IN_URB 4
118
+
#define N_OUT_URB 1
119
+
#define IN_BUFLEN 1024
120
+
#define OUT_BUFLEN 1024
121
+
122
+
struct option_port_private {
123
+
/* Input endpoints and buffer for this port */
124
+
struct urb *in_urbs[N_IN_URB];
125
+
char in_buffer[N_IN_URB][IN_BUFLEN];
126
+
/* Output endpoints and buffer for this port */
127
+
struct urb *out_urbs[N_OUT_URB];
128
+
char out_buffer[N_OUT_URB][OUT_BUFLEN];
129
+
130
+
/* Settings for the port */
131
+
int rts_state; /* Handshaking pins (outputs) */
132
+
int dtr_state;
133
+
int cts_state; /* Handshaking pins (inputs) */
134
+
int dsr_state;
135
+
int dcd_state;
136
+
int ri_state;
137
+
// int break_on;
138
+
139
+
unsigned long tx_start_time[N_OUT_URB];
140
+
};
141
+
142
+
143
+
/* Functions used by new usb-serial code. */
144
+
static int __init
145
+
option_init (void)
146
+
{
147
+
int retval;
148
+
retval = usb_serial_register(&option_3port_device);
149
+
if (retval)
150
+
goto failed_3port_device_register;
151
+
retval = usb_register(&option_driver);
152
+
if (retval)
153
+
goto failed_driver_register;
154
+
155
+
info(DRIVER_DESC ": " DRIVER_VERSION);
156
+
157
+
return 0;
158
+
159
+
failed_driver_register:
160
+
usb_serial_deregister (&option_3port_device);
161
+
failed_3port_device_register:
162
+
return retval;
163
+
}
164
+
165
+
static void __exit
166
+
option_exit (void)
167
+
{
168
+
usb_deregister (&option_driver);
169
+
usb_serial_deregister (&option_3port_device);
170
+
}
171
+
172
+
module_init(option_init);
173
+
module_exit(option_exit);
174
+
175
+
static void
176
+
option_rx_throttle (struct usb_serial_port *port)
177
+
{
178
+
dbg("%s", __FUNCTION__);
179
+
}
180
+
181
+
182
+
static void
183
+
option_rx_unthrottle (struct usb_serial_port *port)
184
+
{
185
+
dbg("%s", __FUNCTION__);
186
+
}
187
+
188
+
189
+
static void
190
+
option_break_ctl (struct usb_serial_port *port, int break_state)
191
+
{
192
+
/* Unfortunately, I don't know how to send a break */
193
+
dbg("%s", __FUNCTION__);
194
+
}
195
+
196
+
197
+
static void
198
+
option_set_termios (struct usb_serial_port *port,
199
+
struct termios *old_termios)
200
+
{
201
+
dbg("%s", __FUNCTION__);
202
+
203
+
option_send_setup(port);
204
+
}
205
+
206
+
static int
207
+
option_tiocmget(struct usb_serial_port *port, struct file *file)
208
+
{
209
+
unsigned int value;
210
+
struct option_port_private *portdata;
211
+
212
+
portdata = usb_get_serial_port_data(port);
213
+
214
+
value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
215
+
((portdata->dtr_state) ? TIOCM_DTR : 0) |
216
+
((portdata->cts_state) ? TIOCM_CTS : 0) |
217
+
((portdata->dsr_state) ? TIOCM_DSR : 0) |
218
+
((portdata->dcd_state) ? TIOCM_CAR : 0) |
219
+
((portdata->ri_state) ? TIOCM_RNG : 0);
220
+
221
+
return value;
222
+
}
223
+
224
+
static int
225
+
option_tiocmset (struct usb_serial_port *port, struct file *file,
226
+
unsigned int set, unsigned int clear)
227
+
{
228
+
struct option_port_private *portdata;
229
+
230
+
portdata = usb_get_serial_port_data(port);
231
+
232
+
if (set & TIOCM_RTS)
233
+
portdata->rts_state = 1;
234
+
if (set & TIOCM_DTR)
235
+
portdata->dtr_state = 1;
236
+
237
+
if (clear & TIOCM_RTS)
238
+
portdata->rts_state = 0;
239
+
if (clear & TIOCM_DTR)
240
+
portdata->dtr_state = 0;
241
+
return option_send_setup(port);
242
+
}
243
+
244
+
static int
245
+
option_ioctl (struct usb_serial_port *port, struct file *file,
246
+
unsigned int cmd, unsigned long arg)
247
+
{
248
+
return -ENOIOCTLCMD;
249
+
}
250
+
251
+
/* Write */
252
+
static int
253
+
option_write(struct usb_serial_port *port,
254
+
const unsigned char *buf, int count)
255
+
{
256
+
struct option_port_private *portdata;
257
+
int i;
258
+
int left, todo;
259
+
struct urb *this_urb = NULL; /* spurious */
260
+
int err;
261
+
262
+
portdata = usb_get_serial_port_data(port);
263
+
264
+
dbg("%s: write (%d chars)", __FUNCTION__, count);
265
+
266
+
#if 0
267
+
spin_lock(&port->lock);
268
+
if (port->write_urb_busy) {
269
+
spin_unlock(&port->lock);
270
+
dbg("%s: already writing", __FUNCTION__);
271
+
return 0;
272
+
}
273
+
port->write_urb_busy = 1;
274
+
spin_unlock(&port->lock);
275
+
#endif
276
+
277
+
i = 0;
278
+
left = count;
279
+
while (left>0) {
280
+
todo = left;
281
+
if (todo > OUT_BUFLEN)
282
+
todo = OUT_BUFLEN;
283
+
284
+
for (;i < N_OUT_URB; i++) {
285
+
/* Check we have a valid urb/endpoint before we use it... */
286
+
this_urb = portdata->out_urbs[i];
287
+
if (this_urb->status != -EINPROGRESS)
288
+
break;
289
+
if (this_urb->transfer_flags & URB_ASYNC_UNLINK)
290
+
continue;
291
+
if (time_before(jiffies, portdata->tx_start_time[i] + 10 * HZ))
292
+
continue;
293
+
this_urb->transfer_flags |= URB_ASYNC_UNLINK;
294
+
usb_unlink_urb(this_urb);
295
+
}
296
+
297
+
if (i == N_OUT_URB) {
298
+
/* no bulk out free! */
299
+
dbg("%s: no output urb -- left %d", __FUNCTION__,count-left);
300
+
#if 0
301
+
port->write_urb_busy = 0;
302
+
#endif
303
+
return count-left;
304
+
}
305
+
306
+
dbg("%s: endpoint %d buf %d", __FUNCTION__, usb_pipeendpoint(this_urb->pipe), i);
307
+
308
+
memcpy (this_urb->transfer_buffer, buf, todo);
309
+
310
+
/* send the data out the bulk port */
311
+
this_urb->transfer_buffer_length = todo;
312
+
313
+
this_urb->transfer_flags &= ~URB_ASYNC_UNLINK;
314
+
this_urb->dev = port->serial->dev;
315
+
err = usb_submit_urb(this_urb, GFP_ATOMIC);
316
+
if (err) {
317
+
dbg("usb_submit_urb %p (write bulk) failed (%d,, has %d)", this_urb, err, this_urb->status);
318
+
continue;
319
+
}
320
+
portdata->tx_start_time[i] = jiffies;
321
+
buf += todo;
322
+
left -= todo;
323
+
}
324
+
325
+
count -= left;
326
+
#if 0
327
+
port->write_urb_busy = 0;
328
+
#endif
329
+
dbg("%s: wrote (did %d)", __FUNCTION__, count);
330
+
return count;
331
+
}
332
+
333
+
static void
334
+
option_indat_callback (struct urb *urb, struct pt_regs *regs)
335
+
{
336
+
int i, err;
337
+
int endpoint;
338
+
struct usb_serial_port *port;
339
+
struct tty_struct *tty;
340
+
unsigned char *data = urb->transfer_buffer;
341
+
342
+
dbg("%s: %p", __FUNCTION__, urb);
343
+
344
+
endpoint = usb_pipeendpoint(urb->pipe);
345
+
port = (struct usb_serial_port *) urb->context;
346
+
347
+
if (urb->status) {
348
+
dbg("%s: nonzero status: %d on endpoint %02x.",
349
+
__FUNCTION__, urb->status, endpoint);
350
+
} else {
351
+
tty = port->tty;
352
+
if (urb->actual_length) {
353
+
for (i = 0; i < urb->actual_length ; ++i) {
354
+
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
355
+
tty_flip_buffer_push(tty);
356
+
tty_insert_flip_char(tty, data[i], 0);
357
+
}
358
+
tty_flip_buffer_push(tty);
359
+
} else {
360
+
dbg("%s: empty read urb received", __FUNCTION__);
361
+
}
362
+
363
+
/* Resubmit urb so we continue receiving */
364
+
if (port->open_count && urb->status != -ESHUTDOWN) {
365
+
err = usb_submit_urb(urb, GFP_ATOMIC);
366
+
if (err)
367
+
printk(KERN_ERR "%s: resubmit read urb failed. (%d)", __FUNCTION__, err);
368
+
}
369
+
}
370
+
return;
371
+
}
372
+
373
+
static void
374
+
option_outdat_callback (struct urb *urb, struct pt_regs *regs)
375
+
{
376
+
struct usb_serial_port *port;
377
+
378
+
dbg("%s", __FUNCTION__);
379
+
380
+
port = (struct usb_serial_port *) urb->context;
381
+
382
+
if (port->open_count)
383
+
schedule_work(&port->work);
384
+
}
385
+
386
+
static void
387
+
option_instat_callback (struct urb *urb, struct pt_regs *regs)
388
+
{
389
+
int err;
390
+
struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
391
+
struct option_port_private *portdata = usb_get_serial_port_data(port);
392
+
struct usb_serial *serial = port->serial;
393
+
394
+
dbg("%s", __FUNCTION__);
395
+
dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
396
+
397
+
if (urb->status == 0) {
398
+
struct usb_ctrlrequest *req_pkt =
399
+
(struct usb_ctrlrequest *)urb->transfer_buffer;
400
+
401
+
if (!req_pkt) {
402
+
dbg("%s: NULL req_pkt\n", __FUNCTION__);
403
+
return;
404
+
}
405
+
if ((req_pkt->bRequestType == 0xA1) && (req_pkt->bRequest == 0x20)) {
406
+
int old_dcd_state;
407
+
unsigned char signals = *((unsigned char *)
408
+
urb->transfer_buffer + sizeof(struct usb_ctrlrequest));
409
+
410
+
dbg("%s: signal x%x", __FUNCTION__, signals);
411
+
412
+
old_dcd_state = portdata->dcd_state;
413
+
portdata->cts_state = 1;
414
+
portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
415
+
portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
416
+
portdata->ri_state = ((signals & 0x08) ? 1 : 0);
417
+
418
+
if (port->tty && !C_CLOCAL(port->tty)
419
+
&& old_dcd_state && !portdata->dcd_state) {
420
+
tty_hangup(port->tty);
421
+
}
422
+
} else
423
+
dbg("%s: type %x req %x", __FUNCTION__, req_pkt->bRequestType,req_pkt->bRequest);
424
+
} else
425
+
dbg("%s: error %d", __FUNCTION__, urb->status);
426
+
427
+
/* Resubmit urb so we continue receiving IRQ data */
428
+
if (urb->status != -ESHUTDOWN) {
429
+
urb->dev = serial->dev;
430
+
err = usb_submit_urb(urb, GFP_ATOMIC);
431
+
if (err)
432
+
dbg("%s: resubmit intr urb failed. (%d)", __FUNCTION__, err);
433
+
}
434
+
}
435
+
436
+
437
+
static int
438
+
option_write_room (struct usb_serial_port *port)
439
+
{
440
+
struct option_port_private *portdata;
441
+
int i;
442
+
int data_len = 0;
443
+
struct urb *this_urb;
444
+
445
+
portdata = usb_get_serial_port_data(port);
446
+
447
+
for (i=0; i < N_OUT_URB; i++)
448
+
this_urb = portdata->out_urbs[i];
449
+
if (this_urb && this_urb->status != -EINPROGRESS)
450
+
data_len += OUT_BUFLEN;
451
+
452
+
dbg("%s: %d", __FUNCTION__, data_len);
453
+
return data_len;
454
+
}
455
+
456
+
457
+
static int
458
+
option_chars_in_buffer (struct usb_serial_port *port)
459
+
{
460
+
struct option_port_private *portdata;
461
+
int i;
462
+
int data_len = 0;
463
+
struct urb *this_urb;
464
+
465
+
portdata = usb_get_serial_port_data(port);
466
+
467
+
for (i=0; i < N_OUT_URB; i++)
468
+
this_urb = portdata->out_urbs[i];
469
+
if (this_urb && this_urb->status == -EINPROGRESS)
470
+
data_len += this_urb->transfer_buffer_length;
471
+
472
+
dbg("%s: %d", __FUNCTION__, data_len);
473
+
return data_len;
474
+
}
475
+
476
+
477
+
static int
478
+
option_open (struct usb_serial_port *port, struct file *filp)
479
+
{
480
+
struct option_port_private *portdata;
481
+
struct usb_serial *serial = port->serial;
482
+
int i, err;
483
+
struct urb *urb;
484
+
485
+
portdata = usb_get_serial_port_data(port);
486
+
487
+
dbg("%s", __FUNCTION__);
488
+
489
+
/* Set some sane defaults */
490
+
portdata->rts_state = 1;
491
+
portdata->dtr_state = 1;
492
+
493
+
/* Reset low level data toggle and start reading from endpoints */
494
+
for (i = 0; i < N_IN_URB; i++) {
495
+
urb = portdata->in_urbs[i];
496
+
if (! urb)
497
+
continue;
498
+
if (urb->dev != serial->dev) {
499
+
dbg("%s: dev %p != %p", __FUNCTION__, urb->dev, serial->dev);
500
+
continue;
501
+
}
502
+
503
+
/* make sure endpoint data toggle is synchronized with the device */
504
+
505
+
usb_clear_halt(urb->dev, urb->pipe);
506
+
507
+
err = usb_submit_urb(urb, GFP_KERNEL);
508
+
if (err) {
509
+
dbg("%s: submit urb %d failed (%d) %d", __FUNCTION__, i, err,
510
+
urb->transfer_buffer_length);
511
+
}
512
+
}
513
+
514
+
/* Reset low level data toggle on out endpoints */
515
+
for (i = 0; i < N_OUT_URB; i++) {
516
+
urb = portdata->out_urbs[i];
517
+
if (! urb)
518
+
continue;
519
+
urb->dev = serial->dev;
520
+
/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 0); */
521
+
}
522
+
523
+
port->tty->low_latency = 1;
524
+
525
+
option_send_setup(port);
526
+
527
+
return (0);
528
+
}
529
+
530
+
static inline void
531
+
stop_urb(struct urb *urb)
532
+
{
533
+
if (urb && urb->status == -EINPROGRESS) {
534
+
urb->transfer_flags &= ~URB_ASYNC_UNLINK;
535
+
usb_kill_urb(urb);
536
+
}
537
+
}
538
+
539
+
static void
540
+
option_close(struct usb_serial_port *port, struct file *filp)
541
+
{
542
+
int i;
543
+
struct usb_serial *serial = port->serial;
544
+
struct option_port_private *portdata;
545
+
546
+
dbg("%s", __FUNCTION__);
547
+
portdata = usb_get_serial_port_data(port);
548
+
549
+
portdata->rts_state = 0;
550
+
portdata->dtr_state = 0;
551
+
552
+
if (serial->dev) {
553
+
option_send_setup(port);
554
+
555
+
/* Stop reading/writing urbs */
556
+
for (i = 0; i < N_IN_URB; i++)
557
+
stop_urb(portdata->in_urbs[i]);
558
+
for (i = 0; i < N_OUT_URB; i++)
559
+
stop_urb(portdata->out_urbs[i]);
560
+
}
561
+
port->tty = NULL;
562
+
}
563
+
564
+
565
+
/* Helper functions used by option_setup_urbs */
566
+
static struct urb *
567
+
option_setup_urb (struct usb_serial *serial, int endpoint,
568
+
int dir, void *ctx, char *buf, int len,
569
+
void (*callback)(struct urb *, struct pt_regs *regs))
570
+
{
571
+
struct urb *urb;
572
+
573
+
if (endpoint == -1)
574
+
return NULL; /* endpoint not needed */
575
+
576
+
urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
577
+
if (urb == NULL) {
578
+
dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
579
+
return NULL;
580
+
}
581
+
582
+
/* Fill URB using supplied data. */
583
+
usb_fill_bulk_urb(urb, serial->dev,
584
+
usb_sndbulkpipe(serial->dev, endpoint) | dir,
585
+
buf, len, callback, ctx);
586
+
587
+
return urb;
588
+
}
589
+
590
+
/* Setup urbs */
591
+
static void
592
+
option_setup_urbs(struct usb_serial *serial)
593
+
{
594
+
int j;
595
+
struct usb_serial_port *port;
596
+
struct option_port_private *portdata;
597
+
598
+
dbg("%s", __FUNCTION__);
599
+
600
+
port = serial->port[0];
601
+
portdata = usb_get_serial_port_data(port);
602
+
603
+
/* Do indat endpoints first */
604
+
for (j = 0; j <= N_IN_URB; ++j) {
605
+
portdata->in_urbs[j] = option_setup_urb (serial,
606
+
port->bulk_in_endpointAddress, USB_DIR_IN, port,
607
+
portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
608
+
}
609
+
610
+
/* outdat endpoints */
611
+
for (j = 0; j <= N_OUT_URB; ++j) {
612
+
portdata->out_urbs[j] = option_setup_urb (serial,
613
+
port->bulk_out_endpointAddress, USB_DIR_OUT, port,
614
+
portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
615
+
}
616
+
}
617
+
618
+
619
+
static int
620
+
option_send_setup(struct usb_serial_port *port)
621
+
{
622
+
struct usb_serial *serial = port->serial;
623
+
struct option_port_private *portdata;
624
+
625
+
dbg("%s", __FUNCTION__);
626
+
627
+
portdata = usb_get_serial_port_data(port);
628
+
629
+
if (port->tty) {
630
+
int val = 0;
631
+
if (portdata->dtr_state)
632
+
val |= 0x01;
633
+
if (portdata->rts_state)
634
+
val |= 0x02;
635
+
636
+
return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
637
+
0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
638
+
}
639
+
640
+
return 0;
641
+
}
642
+
643
+
644
+
static int
645
+
option_startup (struct usb_serial *serial)
646
+
{
647
+
int i, err;
648
+
struct usb_serial_port *port;
649
+
struct option_port_private *portdata;
650
+
651
+
dbg("%s", __FUNCTION__);
652
+
653
+
/* Now setup per port private data */
654
+
for (i = 0; i < serial->num_ports; i++) {
655
+
port = serial->port[i];
656
+
portdata = kmalloc(sizeof(struct option_port_private), GFP_KERNEL);
657
+
if (!portdata) {
658
+
dbg("%s: kmalloc for option_port_private (%d) failed!.", __FUNCTION__, i);
659
+
return (1);
660
+
}
661
+
memset(portdata, 0, sizeof(struct option_port_private));
662
+
663
+
usb_set_serial_port_data(port, portdata);
664
+
665
+
if (! port->interrupt_in_urb)
666
+
continue;
667
+
err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
668
+
if (err)
669
+
dbg("%s: submit irq_in urb failed %d", __FUNCTION__, err);
670
+
}
671
+
672
+
option_setup_urbs(serial);
673
+
674
+
return (0);
675
+
}
676
+
677
+
static void
678
+
option_shutdown (struct usb_serial *serial)
679
+
{
680
+
int i, j;
681
+
struct usb_serial_port *port;
682
+
struct option_port_private *portdata;
683
+
684
+
dbg("%s", __FUNCTION__);
685
+
686
+
/* Stop reading/writing urbs */
687
+
for (i = 0; i < serial->num_ports; ++i) {
688
+
port = serial->port[i];
689
+
portdata = usb_get_serial_port_data(port);
690
+
for (j = 0; j < N_IN_URB; j++)
691
+
stop_urb(portdata->in_urbs[j]);
692
+
for (j = 0; j < N_OUT_URB; j++)
693
+
stop_urb(portdata->out_urbs[j]);
694
+
}
695
+
696
+
/* Now free them */
697
+
for (i = 0; i < serial->num_ports; ++i) {
698
+
port = serial->port[i];
699
+
portdata = usb_get_serial_port_data(port);
700
+
701
+
for (j = 0; j < N_IN_URB; j++) {
702
+
if (portdata->in_urbs[j]) {
703
+
usb_free_urb(portdata->in_urbs[j]);
704
+
portdata->in_urbs[j] = NULL;
705
+
}
706
+
}
707
+
for (j = 0; j < N_OUT_URB; j++) {
708
+
if (portdata->out_urbs[j]) {
709
+
usb_free_urb(portdata->out_urbs[j]);
710
+
portdata->out_urbs[j] = NULL;
711
+
}
712
+
}
713
+
}
714
+
715
+
/* Now free per port private data */
716
+
for (i = 0; i < serial->num_ports; i++) {
717
+
port = serial->port[i];
718
+
kfree(usb_get_serial_port_data(port));
719
+
}
720
+
}
721
+
722
+
MODULE_AUTHOR(DRIVER_AUTHOR);
723
+
MODULE_DESCRIPTION(DRIVER_DESC);
724
+
MODULE_VERSION(DRIVER_VERSION);
725
+
MODULE_LICENSE("GPL");
726
+
727
+
module_param(debug, bool, S_IRUGO | S_IWUSR);
728
+
MODULE_PARM_DESC(debug, "Debug messages");
729
+