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58cfe911 MU |
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 |