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USB: new Novatel device ids for option driver
[linux-2.6/mini2440.git] / drivers / usb / serial / option.c
blobe178e6f403196dce53190af4f2bc4fe35761e89e
1 /*
2 USB Driver for GSM modems
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: see the git log.
13
14 Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
15
16 This driver exists because the "normal" serial driver doesn't work too well
17 with GSM modems. Issues:
18 - data loss -- one single Receive URB is not nearly enough
19 - nonstandard flow (Option devices) control
20 - controlling the baud rate doesn't make sense
21
22 This driver is named "option" because the most common device it's
23 used for is a PC-Card (with an internal OHCI-USB interface, behind
24 which the GSM interface sits), made by Option Inc.
25
26 Some of the "one port" devices actually exhibit multiple USB instances
27 on the USB bus. This is not a bug, these ports are used for different
28 device features.
29 */
30
31 #define DRIVER_VERSION "v0.7.1"
32 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
33 #define DRIVER_DESC "USB Driver for GSM modems"
34
35 #include <linux/kernel.h>
36 #include <linux/jiffies.h>
37 #include <linux/errno.h>
38 #include <linux/tty.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/usb.h>
42 #include <linux/usb/serial.h>
43
44 /* Function prototypes */
45 static int option_open(struct usb_serial_port *port, struct file *filp);
46 static void option_close(struct usb_serial_port *port, struct file *filp);
47 static int option_startup(struct usb_serial *serial);
48 static void option_shutdown(struct usb_serial *serial);
49 static void option_rx_throttle(struct usb_serial_port *port);
50 static void option_rx_unthrottle(struct usb_serial_port *port);
51 static int option_write_room(struct usb_serial_port *port);
52
53 static void option_instat_callback(struct urb *urb);
54
55 static int option_write(struct usb_serial_port *port,
56 const unsigned char *buf, int count);
57
58 static int option_chars_in_buffer(struct usb_serial_port *port);
59 static int option_ioctl(struct usb_serial_port *port, struct file *file,
60 unsigned int cmd, unsigned long arg);
61 static void option_set_termios(struct usb_serial_port *port,
62 struct ktermios *old);
63 static void option_break_ctl(struct usb_serial_port *port, int break_state);
64 static int option_tiocmget(struct usb_serial_port *port, struct file *file);
65 static int option_tiocmset(struct usb_serial_port *port, struct file *file,
66 unsigned int set, unsigned int clear);
67 static int option_send_setup(struct usb_serial_port *port);
68
69 /* Vendor and product IDs */
70 #define OPTION_VENDOR_ID 0x0AF0
71 #define OPTION_PRODUCT_COLT 0x5000
72 #define OPTION_PRODUCT_RICOLA 0x6000
73 #define OPTION_PRODUCT_RICOLA_LIGHT 0x6100
74 #define OPTION_PRODUCT_RICOLA_QUAD 0x6200
75 #define OPTION_PRODUCT_RICOLA_QUAD_LIGHT 0x6300
76 #define OPTION_PRODUCT_RICOLA_NDIS 0x6050
77 #define OPTION_PRODUCT_RICOLA_NDIS_LIGHT 0x6150
78 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD 0x6250
79 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT 0x6350
80 #define OPTION_PRODUCT_COBRA 0x6500
81 #define OPTION_PRODUCT_COBRA_BUS 0x6501
82 #define OPTION_PRODUCT_VIPER 0x6600
83 #define OPTION_PRODUCT_VIPER_BUS 0x6601
84 #define OPTION_PRODUCT_GT_MAX_READY 0x6701
85 #define OPTION_PRODUCT_GT_MAX 0x6711
86 #define OPTION_PRODUCT_FUJI_MODEM_LIGHT 0x6721
87 #define OPTION_PRODUCT_FUJI_MODEM_GT 0x6741
88 #define OPTION_PRODUCT_FUJI_MODEM_EX 0x6761
89 #define OPTION_PRODUCT_FUJI_NETWORK_LIGHT 0x6731
90 #define OPTION_PRODUCT_FUJI_NETWORK_GT 0x6751
91 #define OPTION_PRODUCT_FUJI_NETWORK_EX 0x6771
92 #define OPTION_PRODUCT_KOI_MODEM 0x6800
93 #define OPTION_PRODUCT_KOI_NETWORK 0x6811
94 #define OPTION_PRODUCT_SCORPION_MODEM 0x6901
95 #define OPTION_PRODUCT_SCORPION_NETWORK 0x6911
96 #define OPTION_PRODUCT_ETNA_MODEM 0x7001
97 #define OPTION_PRODUCT_ETNA_NETWORK 0x7011
98 #define OPTION_PRODUCT_ETNA_MODEM_LITE 0x7021
99 #define OPTION_PRODUCT_ETNA_MODEM_GT 0x7041
100 #define OPTION_PRODUCT_ETNA_MODEM_EX 0x7061
101 #define OPTION_PRODUCT_ETNA_NETWORK_LITE 0x7031
102 #define OPTION_PRODUCT_ETNA_NETWORK_GT 0x7051
103 #define OPTION_PRODUCT_ETNA_NETWORK_EX 0x7071
104 #define OPTION_PRODUCT_ETNA_KOI_MODEM 0x7100
105 #define OPTION_PRODUCT_ETNA_KOI_NETWORK 0x7111
106
107 #define HUAWEI_VENDOR_ID 0x12D1
108 #define HUAWEI_PRODUCT_E600 0x1001
109 #define HUAWEI_PRODUCT_E220 0x1003
110
111 #define NOVATELWIRELESS_VENDOR_ID 0x1410
112
113 #define ANYDATA_VENDOR_ID 0x16d5
114 #define ANYDATA_PRODUCT_ID 0x6501
115
116 static struct usb_device_id option_ids[] = {
117 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
118 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
119 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
120 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
121 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
122 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
123 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) },
124 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) },
125 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) },
126 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
127 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) },
128 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) },
129 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) },
130 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) },
131 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX) },
132 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) },
133 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) },
134 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) },
135 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_LIGHT) },
136 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_GT) },
137 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_EX) },
138 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) },
139 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_NETWORK) },
140 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) },
141 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_NETWORK) },
142 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) },
143 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK) },
144 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) },
145 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
146 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
147 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_LITE) },
148 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_GT) },
149 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_EX) },
150 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
151 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_NETWORK) },
152 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
153 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220) },
154 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1100) }, /* Novatel Merlin XS620/S640 */
155 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1110) }, /* Novatel Merlin S620 */
156 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1120) }, /* Novatel Merlin EX720 */
157 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1130) }, /* Novatel Merlin S720 */
158 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1400) }, /* Novatel U730 */
159 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1410) }, /* Novatel U740 */
160 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1420) }, /* Novatel EU870 */
161 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1430) }, /* Novatel Merlin XU870 HSDPA/3G */
162 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1430) }, /* Novatel XU870 */
163 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2100) }, /* Novatel EV620 CDMA/EV-DO */
164 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2110) }, /* Novatel Merlin ES620 / Merlin ES720 / Ovation U720 */
165 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2130) }, /* Novatel Merlin ES620 SM Bus */
166 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2410) }, /* Novatel EU740 */
167 { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) },
168 { } /* Terminating entry */
169 };
170 MODULE_DEVICE_TABLE(usb, option_ids);
171
172 static struct usb_driver option_driver = {
173 .name = "option",
174 .probe = usb_serial_probe,
175 .disconnect = usb_serial_disconnect,
176 .id_table = option_ids,
177 .no_dynamic_id = 1,
178 };
179
180 /* The card has three separate interfaces, which the serial driver
181 * recognizes separately, thus num_port=1.
182 */
183
184 static struct usb_serial_driver option_1port_device = {
185 .driver = {
186 .owner = THIS_MODULE,
187 .name = "option1",
188 },
189 .description = "GSM modem (1-port)",
190 .usb_driver = &option_driver,
191 .id_table = option_ids,
192 .num_interrupt_in = NUM_DONT_CARE,
193 .num_bulk_in = NUM_DONT_CARE,
194 .num_bulk_out = NUM_DONT_CARE,
195 .num_ports = 1,
196 .open = option_open,
197 .close = option_close,
198 .write = option_write,
199 .write_room = option_write_room,
200 .chars_in_buffer = option_chars_in_buffer,
201 .throttle = option_rx_throttle,
202 .unthrottle = option_rx_unthrottle,
203 .ioctl = option_ioctl,
204 .set_termios = option_set_termios,
205 .break_ctl = option_break_ctl,
206 .tiocmget = option_tiocmget,
207 .tiocmset = option_tiocmset,
208 .attach = option_startup,
209 .shutdown = option_shutdown,
210 .read_int_callback = option_instat_callback,
211 };
212
213 #ifdef CONFIG_USB_DEBUG
214 static int debug;
215 #else
216 #define debug 0
217 #endif
218
219 /* per port private data */
220
221 #define N_IN_URB 4
222 #define N_OUT_URB 1
223 #define IN_BUFLEN 4096
224 #define OUT_BUFLEN 128
225
226 struct option_port_private {
227 /* Input endpoints and buffer for this port */
228 struct urb *in_urbs[N_IN_URB];
229 char in_buffer[N_IN_URB][IN_BUFLEN];
230 /* Output endpoints and buffer for this port */
231 struct urb *out_urbs[N_OUT_URB];
232 char out_buffer[N_OUT_URB][OUT_BUFLEN];
233
234 /* Settings for the port */
235 int rts_state; /* Handshaking pins (outputs) */
236 int dtr_state;
237 int cts_state; /* Handshaking pins (inputs) */
238 int dsr_state;
239 int dcd_state;
240 int ri_state;
241
242 unsigned long tx_start_time[N_OUT_URB];
243 };
244
245 /* Functions used by new usb-serial code. */
246 static int __init option_init(void)
247 {
248 int retval;
249 retval = usb_serial_register(&option_1port_device);
250 if (retval)
251 goto failed_1port_device_register;
252 retval = usb_register(&option_driver);
253 if (retval)
254 goto failed_driver_register;
255
256 info(DRIVER_DESC ": " DRIVER_VERSION);
257
258 return 0;
259
260 failed_driver_register:
261 usb_serial_deregister (&option_1port_device);
262 failed_1port_device_register:
263 return retval;
264 }
265
266 static void __exit option_exit(void)
267 {
268 usb_deregister (&option_driver);
269 usb_serial_deregister (&option_1port_device);
270 }
271
272 module_init(option_init);
273 module_exit(option_exit);
274
275 static void option_rx_throttle(struct usb_serial_port *port)
276 {
277 dbg("%s", __FUNCTION__);
278 }
279
280 static void option_rx_unthrottle(struct usb_serial_port *port)
281 {
282 dbg("%s", __FUNCTION__);
283 }
284
285 static void option_break_ctl(struct usb_serial_port *port, int break_state)
286 {
287 /* Unfortunately, I don't know how to send a break */
288 dbg("%s", __FUNCTION__);
289 }
290
291 static void option_set_termios(struct usb_serial_port *port,
292 struct ktermios *old_termios)
293 {
294 dbg("%s", __FUNCTION__);
295
296 option_send_setup(port);
297 }
298
299 static int option_tiocmget(struct usb_serial_port *port, struct file *file)
300 {
301 unsigned int value;
302 struct option_port_private *portdata;
303
304 portdata = usb_get_serial_port_data(port);
305
306 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
307 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
308 ((portdata->cts_state) ? TIOCM_CTS : 0) |
309 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
310 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
311 ((portdata->ri_state) ? TIOCM_RNG : 0);
312
313 return value;
314 }
315
316 static int option_tiocmset(struct usb_serial_port *port, struct file *file,
317 unsigned int set, unsigned int clear)
318 {
319 struct option_port_private *portdata;
320
321 portdata = usb_get_serial_port_data(port);
322
323 if (set & TIOCM_RTS)
324 portdata->rts_state = 1;
325 if (set & TIOCM_DTR)
326 portdata->dtr_state = 1;
327
328 if (clear & TIOCM_RTS)
329 portdata->rts_state = 0;
330 if (clear & TIOCM_DTR)
331 portdata->dtr_state = 0;
332 return option_send_setup(port);
333 }
334
335 static int option_ioctl(struct usb_serial_port *port, struct file *file,
336 unsigned int cmd, unsigned long arg)
337 {
338 return -ENOIOCTLCMD;
339 }
340
341 /* Write */
342 static int option_write(struct usb_serial_port *port,
343 const unsigned char *buf, int count)
344 {
345 struct option_port_private *portdata;
346 int i;
347 int left, todo;
348 struct urb *this_urb = NULL; /* spurious */
349 int err;
350
351 portdata = usb_get_serial_port_data(port);
352
353 dbg("%s: write (%d chars)", __FUNCTION__, count);
354
355 i = 0;
356 left = count;
357 for (i=0; left > 0 && i < N_OUT_URB; i++) {
358 todo = left;
359 if (todo > OUT_BUFLEN)
360 todo = OUT_BUFLEN;
361
362 this_urb = portdata->out_urbs[i];
363 if (this_urb->status == -EINPROGRESS) {
364 if (time_before(jiffies,
365 portdata->tx_start_time[i] + 10 * HZ))
366 continue;
367 usb_unlink_urb(this_urb);
368 continue;
369 }
370 if (this_urb->status != 0)
371 dbg("usb_write %p failed (err=%d)",
372 this_urb, this_urb->status);
373
374 dbg("%s: endpoint %d buf %d", __FUNCTION__,
375 usb_pipeendpoint(this_urb->pipe), i);
376
377 /* send the data */
378 memcpy (this_urb->transfer_buffer, buf, todo);
379 this_urb->transfer_buffer_length = todo;
380
381 this_urb->dev = port->serial->dev;
382 err = usb_submit_urb(this_urb, GFP_ATOMIC);
383 if (err) {
384 dbg("usb_submit_urb %p (write bulk) failed "
385 "(%d, has %d)", this_urb,
386 err, this_urb->status);
387 continue;
388 }
389 portdata->tx_start_time[i] = jiffies;
390 buf += todo;
391 left -= todo;
392 }
393
394 count -= left;
395 dbg("%s: wrote (did %d)", __FUNCTION__, count);
396 return count;
397 }
398
399 static void option_indat_callback(struct urb *urb)
400 {
401 int err;
402 int endpoint;
403 struct usb_serial_port *port;
404 struct tty_struct *tty;
405 unsigned char *data = urb->transfer_buffer;
406
407 dbg("%s: %p", __FUNCTION__, urb);
408
409 endpoint = usb_pipeendpoint(urb->pipe);
410 port = (struct usb_serial_port *) urb->context;
411
412 if (urb->status) {
413 dbg("%s: nonzero status: %d on endpoint %02x.",
414 __FUNCTION__, urb->status, endpoint);
415 } else {
416 tty = port->tty;
417 if (urb->actual_length) {
418 tty_buffer_request_room(tty, urb->actual_length);
419 tty_insert_flip_string(tty, data, urb->actual_length);
420 tty_flip_buffer_push(tty);
421 } else {
422 dbg("%s: empty read urb received", __FUNCTION__);
423 }
424
425 /* Resubmit urb so we continue receiving */
426 if (port->open_count && urb->status != -ESHUTDOWN) {
427 err = usb_submit_urb(urb, GFP_ATOMIC);
428 if (err)
429 printk(KERN_ERR "%s: resubmit read urb failed. "
430 "(%d)", __FUNCTION__, err);
431 }
432 }
433 return;
434 }
435
436 static void option_outdat_callback(struct urb *urb)
437 {
438 struct usb_serial_port *port;
439
440 dbg("%s", __FUNCTION__);
441
442 port = (struct usb_serial_port *) urb->context;
443
444 usb_serial_port_softint(port);
445 }
446
447 static void option_instat_callback(struct urb *urb)
448 {
449 int err;
450 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
451 struct option_port_private *portdata = usb_get_serial_port_data(port);
452 struct usb_serial *serial = port->serial;
453
454 dbg("%s", __FUNCTION__);
455 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
456
457 if (urb->status == 0) {
458 struct usb_ctrlrequest *req_pkt =
459 (struct usb_ctrlrequest *)urb->transfer_buffer;
460
461 if (!req_pkt) {
462 dbg("%s: NULL req_pkt\n", __FUNCTION__);
463 return;
464 }
465 if ((req_pkt->bRequestType == 0xA1) &&
466 (req_pkt->bRequest == 0x20)) {
467 int old_dcd_state;
468 unsigned char signals = *((unsigned char *)
469 urb->transfer_buffer +
470 sizeof(struct usb_ctrlrequest));
471
472 dbg("%s: signal x%x", __FUNCTION__, signals);
473
474 old_dcd_state = portdata->dcd_state;
475 portdata->cts_state = 1;
476 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
477 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
478 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
479
480 if (port->tty && !C_CLOCAL(port->tty) &&
481 old_dcd_state && !portdata->dcd_state)
482 tty_hangup(port->tty);
483 } else {
484 dbg("%s: type %x req %x", __FUNCTION__,
485 req_pkt->bRequestType,req_pkt->bRequest);
486 }
487 } else
488 dbg("%s: error %d", __FUNCTION__, urb->status);
489
490 /* Resubmit urb so we continue receiving IRQ data */
491 if (urb->status != -ESHUTDOWN) {
492 urb->dev = serial->dev;
493 err = usb_submit_urb(urb, GFP_ATOMIC);
494 if (err)
495 dbg("%s: resubmit intr urb failed. (%d)",
496 __FUNCTION__, err);
497 }
498 }
499
500 static int option_write_room(struct usb_serial_port *port)
501 {
502 struct option_port_private *portdata;
503 int i;
504 int data_len = 0;
505 struct urb *this_urb;
506
507 portdata = usb_get_serial_port_data(port);
508
509 for (i=0; i < N_OUT_URB; i++) {
510 this_urb = portdata->out_urbs[i];
511 if (this_urb && this_urb->status != -EINPROGRESS)
512 data_len += OUT_BUFLEN;
513 }
514
515 dbg("%s: %d", __FUNCTION__, data_len);
516 return data_len;
517 }
518
519 static int option_chars_in_buffer(struct usb_serial_port *port)
520 {
521 struct option_port_private *portdata;
522 int i;
523 int data_len = 0;
524 struct urb *this_urb;
525
526 portdata = usb_get_serial_port_data(port);
527
528 for (i=0; i < N_OUT_URB; i++) {
529 this_urb = portdata->out_urbs[i];
530 if (this_urb && this_urb->status == -EINPROGRESS)
531 data_len += this_urb->transfer_buffer_length;
532 }
533 dbg("%s: %d", __FUNCTION__, data_len);
534 return data_len;
535 }
536
537 static int option_open(struct usb_serial_port *port, struct file *filp)
538 {
539 struct option_port_private *portdata;
540 struct usb_serial *serial = port->serial;
541 int i, err;
542 struct urb *urb;
543
544 portdata = usb_get_serial_port_data(port);
545
546 dbg("%s", __FUNCTION__);
547
548 /* Set some sane defaults */
549 portdata->rts_state = 1;
550 portdata->dtr_state = 1;
551
552 /* Reset low level data toggle and start reading from endpoints */
553 for (i = 0; i < N_IN_URB; i++) {
554 urb = portdata->in_urbs[i];
555 if (! urb)
556 continue;
557 if (urb->dev != serial->dev) {
558 dbg("%s: dev %p != %p", __FUNCTION__,
559 urb->dev, serial->dev);
560 continue;
561 }
562
563 /*
564 * make sure endpoint data toggle is synchronized with the
565 * device
566 */
567 usb_clear_halt(urb->dev, urb->pipe);
568
569 err = usb_submit_urb(urb, GFP_KERNEL);
570 if (err) {
571 dbg("%s: submit urb %d failed (%d) %d",
572 __FUNCTION__, i, err,
573 urb->transfer_buffer_length);
574 }
575 }
576
577 /* Reset low level data toggle on out endpoints */
578 for (i = 0; i < N_OUT_URB; i++) {
579 urb = portdata->out_urbs[i];
580 if (! urb)
581 continue;
582 urb->dev = serial->dev;
583 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
584 usb_pipeout(urb->pipe), 0); */
585 }
586
587 port->tty->low_latency = 1;
588
589 option_send_setup(port);
590
591 return (0);
592 }
593
594 static inline void stop_urb(struct urb *urb)
595 {
596 if (urb && urb->status == -EINPROGRESS)
597 usb_kill_urb(urb);
598 }
599
600 static void option_close(struct usb_serial_port *port, struct file *filp)
601 {
602 int i;
603 struct usb_serial *serial = port->serial;
604 struct option_port_private *portdata;
605
606 dbg("%s", __FUNCTION__);
607 portdata = usb_get_serial_port_data(port);
608
609 portdata->rts_state = 0;
610 portdata->dtr_state = 0;
611
612 if (serial->dev) {
613 option_send_setup(port);
614
615 /* Stop reading/writing urbs */
616 for (i = 0; i < N_IN_URB; i++)
617 stop_urb(portdata->in_urbs[i]);
618 for (i = 0; i < N_OUT_URB; i++)
619 stop_urb(portdata->out_urbs[i]);
620 }
621 port->tty = NULL;
622 }
623
624 /* Helper functions used by option_setup_urbs */
625 static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
626 int dir, void *ctx, char *buf, int len,
627 void (*callback)(struct urb *))
628 {
629 struct urb *urb;
630
631 if (endpoint == -1)
632 return NULL; /* endpoint not needed */
633
634 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
635 if (urb == NULL) {
636 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
637 return NULL;
638 }
639
640 /* Fill URB using supplied data. */
641 usb_fill_bulk_urb(urb, serial->dev,
642 usb_sndbulkpipe(serial->dev, endpoint) | dir,
643 buf, len, callback, ctx);
644
645 return urb;
646 }
647
648 /* Setup urbs */
649 static void option_setup_urbs(struct usb_serial *serial)
650 {
651 int i,j;
652 struct usb_serial_port *port;
653 struct option_port_private *portdata;
654
655 dbg("%s", __FUNCTION__);
656
657 for (i = 0; i < serial->num_ports; i++) {
658 port = serial->port[i];
659 portdata = usb_get_serial_port_data(port);
660
661 /* Do indat endpoints first */
662 for (j = 0; j < N_IN_URB; ++j) {
663 portdata->in_urbs[j] = option_setup_urb (serial,
664 port->bulk_in_endpointAddress, USB_DIR_IN, port,
665 portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
666 }
667
668 /* outdat endpoints */
669 for (j = 0; j < N_OUT_URB; ++j) {
670 portdata->out_urbs[j] = option_setup_urb (serial,
671 port->bulk_out_endpointAddress, USB_DIR_OUT, port,
672 portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
673 }
674 }
675 }
676
677 static int option_send_setup(struct usb_serial_port *port)
678 {
679 struct usb_serial *serial = port->serial;
680 struct option_port_private *portdata;
681
682 dbg("%s", __FUNCTION__);
683
684 if (port->number != 0)
685 return 0;
686
687 portdata = usb_get_serial_port_data(port);
688
689 if (port->tty) {
690 int val = 0;
691 if (portdata->dtr_state)
692 val |= 0x01;
693 if (portdata->rts_state)
694 val |= 0x02;
695
696 return usb_control_msg(serial->dev,
697 usb_rcvctrlpipe(serial->dev, 0),
698 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
699 }
700
701 return 0;
702 }
703
704 static int option_startup(struct usb_serial *serial)
705 {
706 int i, err;
707 struct usb_serial_port *port;
708 struct option_port_private *portdata;
709
710 dbg("%s", __FUNCTION__);
711
712 /* Now setup per port private data */
713 for (i = 0; i < serial->num_ports; i++) {
714 port = serial->port[i];
715 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
716 if (!portdata) {
717 dbg("%s: kmalloc for option_port_private (%d) failed!.",
718 __FUNCTION__, i);
719 return (1);
720 }
721
722 usb_set_serial_port_data(port, portdata);
723
724 if (! port->interrupt_in_urb)
725 continue;
726 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
727 if (err)
728 dbg("%s: submit irq_in urb failed %d",
729 __FUNCTION__, err);
730 }
731
732 option_setup_urbs(serial);
733
734 return (0);
735 }
736
737 static void option_shutdown(struct usb_serial *serial)
738 {
739 int i, j;
740 struct usb_serial_port *port;
741 struct option_port_private *portdata;
742
743 dbg("%s", __FUNCTION__);
744
745 /* Stop reading/writing urbs */
746 for (i = 0; i < serial->num_ports; ++i) {
747 port = serial->port[i];
748 portdata = usb_get_serial_port_data(port);
749 for (j = 0; j < N_IN_URB; j++)
750 stop_urb(portdata->in_urbs[j]);
751 for (j = 0; j < N_OUT_URB; j++)
752 stop_urb(portdata->out_urbs[j]);
753 }
754
755 /* Now free them */
756 for (i = 0; i < serial->num_ports; ++i) {
757 port = serial->port[i];
758 portdata = usb_get_serial_port_data(port);
759
760 for (j = 0; j < N_IN_URB; j++) {
761 if (portdata->in_urbs[j]) {
762 usb_free_urb(portdata->in_urbs[j]);
763 portdata->in_urbs[j] = NULL;
764 }
765 }
766 for (j = 0; j < N_OUT_URB; j++) {
767 if (portdata->out_urbs[j]) {
768 usb_free_urb(portdata->out_urbs[j]);
769 portdata->out_urbs[j] = NULL;
770 }
771 }
772 }
773
774 /* Now free per port private data */
775 for (i = 0; i < serial->num_ports; i++) {
776 port = serial->port[i];
777 kfree(usb_get_serial_port_data(port));
778 }
779 }
780
781 MODULE_AUTHOR(DRIVER_AUTHOR);
782 MODULE_DESCRIPTION(DRIVER_DESC);
783 MODULE_VERSION(DRIVER_VERSION);
784 MODULE_LICENSE("GPL");
785
786 #ifdef CONFIG_USB_DEBUG
787 module_param(debug, bool, S_IRUGO | S_IWUSR);
788 MODULE_PARM_DESC(debug, "Debug messages");
789 #endif
790
Support for the Chinese Samsung S3C2440 based development boards