Commit | Line | Data |
---|---|---|
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 | |
ba460e48 | 15 | and analysis of misbehavior with the standard driver |
58cfe911 MU |
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 | |
ba460e48 MU |
21 | 2005-05-24 v0.4 option_write() sometimes deadlocked under heavy load |
22 | removed some dead code | |
23 | added sponsor notice | |
24 | coding style clean-up | |
25 | 2005-06-20 v0.4.1 add missing braces :-/ | |
26 | killed end-of-line whitespace | |
27 | 2005-07-15 v0.4.2 rename WLAN product to FUSION, add FUSION2 | |
28 | ||
29 | Work sponsored by: Sigos GmbH, Germany <info@sigos.de> | |
30 | ||
58cfe911 | 31 | */ |
ba460e48 MU |
32 | |
33 | #define DRIVER_VERSION "v0.4" | |
58cfe911 MU |
34 | #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" |
35 | #define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver" | |
36 | ||
37 | #include <linux/config.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/jiffies.h> | |
40 | #include <linux/errno.h> | |
41 | #include <linux/tty.h> | |
42 | #include <linux/tty_flip.h> | |
43 | #include <linux/module.h> | |
44 | #include <linux/usb.h> | |
45 | #include "usb-serial.h" | |
46 | ||
47 | /* Function prototypes */ | |
7bb75aee AM |
48 | static int option_open(struct usb_serial_port *port, struct file *filp); |
49 | static void option_close(struct usb_serial_port *port, struct file *filp); | |
50 | static int option_startup(struct usb_serial *serial); | |
51 | static void option_shutdown(struct usb_serial *serial); | |
52 | static void option_rx_throttle(struct usb_serial_port *port); | |
53 | static void option_rx_unthrottle(struct usb_serial_port *port); | |
54 | static int option_write_room(struct usb_serial_port *port); | |
58cfe911 MU |
55 | |
56 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs); | |
57 | ||
7bb75aee AM |
58 | static int option_write(struct usb_serial_port *port, |
59 | const unsigned char *buf, int count); | |
58cfe911 | 60 | |
7bb75aee AM |
61 | static int option_chars_in_buffer(struct usb_serial_port *port); |
62 | static int option_ioctl(struct usb_serial_port *port, struct file *file, | |
63 | unsigned int cmd, unsigned long arg); | |
64 | static void option_set_termios(struct usb_serial_port *port, | |
65 | struct termios *old); | |
66 | static void option_break_ctl(struct usb_serial_port *port, int break_state); | |
67 | static int option_tiocmget(struct usb_serial_port *port, struct file *file); | |
68 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, | |
69 | unsigned int set, unsigned int clear); | |
70 | static int option_send_setup(struct usb_serial_port *port); | |
58cfe911 MU |
71 | |
72 | /* Vendor and product IDs */ | |
ba460e48 MU |
73 | #define OPTION_VENDOR_ID 0x0AF0 |
74 | ||
75 | #define OPTION_PRODUCT_OLD 0x5000 | |
76 | #define OPTION_PRODUCT_FUSION 0x6000 | |
77 | #define OPTION_PRODUCT_FUSION2 0x6300 | |
58cfe911 | 78 | |
58cfe911 MU |
79 | static struct usb_device_id option_ids[] = { |
80 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
ba460e48 MU |
81 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, |
82 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
58cfe911 MU |
83 | { } /* Terminating entry */ |
84 | }; | |
85 | ||
86 | MODULE_DEVICE_TABLE(usb, option_ids); | |
87 | ||
88 | static struct usb_driver option_driver = { | |
89 | .owner = THIS_MODULE, | |
90 | .name = "option", | |
91 | .probe = usb_serial_probe, | |
92 | .disconnect = usb_serial_disconnect, | |
93 | .id_table = option_ids, | |
94 | }; | |
95 | ||
96 | /* The card has three separate interfaces, wich the serial driver | |
97 | * recognizes separately, thus num_port=1. | |
98 | */ | |
99 | static struct usb_serial_device_type option_3port_device = { | |
ba460e48 MU |
100 | .owner = THIS_MODULE, |
101 | .name = "Option 3G data card", | |
102 | .short_name = "option", | |
103 | .id_table = option_ids, | |
104 | .num_interrupt_in = NUM_DONT_CARE, | |
105 | .num_bulk_in = NUM_DONT_CARE, | |
106 | .num_bulk_out = NUM_DONT_CARE, | |
107 | .num_ports = 1, /* 3, but the card reports its ports separately */ | |
108 | .open = option_open, | |
109 | .close = option_close, | |
110 | .write = option_write, | |
111 | .write_room = option_write_room, | |
112 | .chars_in_buffer = option_chars_in_buffer, | |
113 | .throttle = option_rx_throttle, | |
114 | .unthrottle = option_rx_unthrottle, | |
115 | .ioctl = option_ioctl, | |
116 | .set_termios = option_set_termios, | |
117 | .break_ctl = option_break_ctl, | |
118 | .tiocmget = option_tiocmget, | |
119 | .tiocmset = option_tiocmset, | |
120 | .attach = option_startup, | |
121 | .shutdown = option_shutdown, | |
122 | .read_int_callback = option_instat_callback, | |
58cfe911 MU |
123 | }; |
124 | ||
ba460e48 | 125 | #ifdef CONFIG_USB_DEBUG |
58cfe911 | 126 | static int debug; |
ba460e48 MU |
127 | #else |
128 | #define debug 0 | |
129 | #endif | |
130 | ||
58cfe911 MU |
131 | /* per port private data */ |
132 | ||
ba460e48 MU |
133 | #define N_IN_URB 4 |
134 | #define N_OUT_URB 1 | |
135 | #define IN_BUFLEN 1024 | |
136 | #define OUT_BUFLEN 128 | |
58cfe911 MU |
137 | |
138 | struct option_port_private { | |
139 | /* Input endpoints and buffer for this port */ | |
ba460e48 MU |
140 | struct urb *in_urbs[N_IN_URB]; |
141 | char in_buffer[N_IN_URB][IN_BUFLEN]; | |
58cfe911 | 142 | /* Output endpoints and buffer for this port */ |
ba460e48 MU |
143 | struct urb *out_urbs[N_OUT_URB]; |
144 | char out_buffer[N_OUT_URB][OUT_BUFLEN]; | |
58cfe911 MU |
145 | |
146 | /* Settings for the port */ | |
ba460e48 MU |
147 | int rts_state; /* Handshaking pins (outputs) */ |
148 | int dtr_state; | |
149 | int cts_state; /* Handshaking pins (inputs) */ | |
150 | int dsr_state; | |
151 | int dcd_state; | |
152 | int ri_state; | |
153 | ||
154 | unsigned long tx_start_time[N_OUT_URB]; | |
58cfe911 MU |
155 | }; |
156 | ||
58cfe911 | 157 | /* Functions used by new usb-serial code. */ |
7bb75aee | 158 | static int __init option_init(void) |
58cfe911 MU |
159 | { |
160 | int retval; | |
161 | retval = usb_serial_register(&option_3port_device); | |
162 | if (retval) | |
163 | goto failed_3port_device_register; | |
164 | retval = usb_register(&option_driver); | |
165 | if (retval) | |
166 | goto failed_driver_register; | |
167 | ||
168 | info(DRIVER_DESC ": " DRIVER_VERSION); | |
169 | ||
170 | return 0; | |
171 | ||
172 | failed_driver_register: | |
173 | usb_serial_deregister (&option_3port_device); | |
174 | failed_3port_device_register: | |
175 | return retval; | |
176 | } | |
177 | ||
7bb75aee | 178 | static void __exit option_exit(void) |
58cfe911 MU |
179 | { |
180 | usb_deregister (&option_driver); | |
181 | usb_serial_deregister (&option_3port_device); | |
182 | } | |
183 | ||
184 | module_init(option_init); | |
185 | module_exit(option_exit); | |
186 | ||
7bb75aee | 187 | static void option_rx_throttle(struct usb_serial_port *port) |
58cfe911 MU |
188 | { |
189 | dbg("%s", __FUNCTION__); | |
190 | } | |
191 | ||
7bb75aee | 192 | static void option_rx_unthrottle(struct usb_serial_port *port) |
58cfe911 MU |
193 | { |
194 | dbg("%s", __FUNCTION__); | |
195 | } | |
196 | ||
7bb75aee | 197 | static void option_break_ctl(struct usb_serial_port *port, int break_state) |
58cfe911 MU |
198 | { |
199 | /* Unfortunately, I don't know how to send a break */ | |
ba460e48 | 200 | dbg("%s", __FUNCTION__); |
58cfe911 MU |
201 | } |
202 | ||
7bb75aee AM |
203 | static void option_set_termios(struct usb_serial_port *port, |
204 | struct termios *old_termios) | |
58cfe911 MU |
205 | { |
206 | dbg("%s", __FUNCTION__); | |
207 | ||
208 | option_send_setup(port); | |
209 | } | |
210 | ||
7bb75aee | 211 | static int option_tiocmget(struct usb_serial_port *port, struct file *file) |
58cfe911 | 212 | { |
ba460e48 MU |
213 | unsigned int value; |
214 | struct option_port_private *portdata; | |
58cfe911 MU |
215 | |
216 | portdata = usb_get_serial_port_data(port); | |
217 | ||
218 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
219 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
220 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
221 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
222 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
223 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
224 | ||
225 | return value; | |
226 | } | |
227 | ||
7bb75aee AM |
228 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
229 | unsigned int set, unsigned int clear) | |
58cfe911 | 230 | { |
ba460e48 | 231 | struct option_port_private *portdata; |
58cfe911 MU |
232 | |
233 | portdata = usb_get_serial_port_data(port); | |
234 | ||
235 | if (set & TIOCM_RTS) | |
236 | portdata->rts_state = 1; | |
237 | if (set & TIOCM_DTR) | |
238 | portdata->dtr_state = 1; | |
239 | ||
240 | if (clear & TIOCM_RTS) | |
241 | portdata->rts_state = 0; | |
242 | if (clear & TIOCM_DTR) | |
243 | portdata->dtr_state = 0; | |
244 | return option_send_setup(port); | |
245 | } | |
246 | ||
7bb75aee AM |
247 | static int option_ioctl(struct usb_serial_port *port, struct file *file, |
248 | unsigned int cmd, unsigned long arg) | |
58cfe911 MU |
249 | { |
250 | return -ENOIOCTLCMD; | |
251 | } | |
252 | ||
253 | /* Write */ | |
7bb75aee AM |
254 | static int option_write(struct usb_serial_port *port, |
255 | const unsigned char *buf, int count) | |
58cfe911 | 256 | { |
ba460e48 MU |
257 | struct option_port_private *portdata; |
258 | int i; | |
259 | int left, todo; | |
260 | struct urb *this_urb = NULL; /* spurious */ | |
261 | int err; | |
58cfe911 MU |
262 | |
263 | portdata = usb_get_serial_port_data(port); | |
264 | ||
265 | dbg("%s: write (%d chars)", __FUNCTION__, count); | |
266 | ||
58cfe911 MU |
267 | i = 0; |
268 | left = count; | |
ba460e48 | 269 | for (i=0; left > 0 && i < N_OUT_URB; i++) { |
58cfe911 MU |
270 | todo = left; |
271 | if (todo > OUT_BUFLEN) | |
272 | todo = OUT_BUFLEN; | |
273 | ||
ba460e48 MU |
274 | this_urb = portdata->out_urbs[i]; |
275 | if (this_urb->status == -EINPROGRESS) { | |
7bb75aee AM |
276 | if (time_before(jiffies, |
277 | portdata->tx_start_time[i] + 10 * HZ)) | |
58cfe911 | 278 | continue; |
58cfe911 | 279 | usb_unlink_urb(this_urb); |
ba460e48 | 280 | continue; |
58cfe911 | 281 | } |
ba460e48 | 282 | if (this_urb->status != 0) |
7bb75aee AM |
283 | dbg("usb_write %p failed (err=%d)", |
284 | this_urb, this_urb->status); | |
58cfe911 | 285 | |
7bb75aee AM |
286 | dbg("%s: endpoint %d buf %d", __FUNCTION__, |
287 | usb_pipeendpoint(this_urb->pipe), i); | |
58cfe911 | 288 | |
ba460e48 | 289 | /* send the data */ |
58cfe911 | 290 | memcpy (this_urb->transfer_buffer, buf, todo); |
58cfe911 MU |
291 | this_urb->transfer_buffer_length = todo; |
292 | ||
58cfe911 MU |
293 | this_urb->dev = port->serial->dev; |
294 | err = usb_submit_urb(this_urb, GFP_ATOMIC); | |
295 | if (err) { | |
7bb75aee AM |
296 | dbg("usb_submit_urb %p (write bulk) failed " |
297 | "(%d, has %d)", this_urb, | |
298 | err, this_urb->status); | |
58cfe911 MU |
299 | continue; |
300 | } | |
301 | portdata->tx_start_time[i] = jiffies; | |
302 | buf += todo; | |
303 | left -= todo; | |
304 | } | |
305 | ||
306 | count -= left; | |
58cfe911 MU |
307 | dbg("%s: wrote (did %d)", __FUNCTION__, count); |
308 | return count; | |
309 | } | |
310 | ||
7bb75aee | 311 | static void option_indat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 | 312 | { |
ba460e48 | 313 | int i, err; |
58cfe911 MU |
314 | int endpoint; |
315 | struct usb_serial_port *port; | |
316 | struct tty_struct *tty; | |
317 | unsigned char *data = urb->transfer_buffer; | |
318 | ||
319 | dbg("%s: %p", __FUNCTION__, urb); | |
320 | ||
321 | endpoint = usb_pipeendpoint(urb->pipe); | |
322 | port = (struct usb_serial_port *) urb->context; | |
323 | ||
324 | if (urb->status) { | |
325 | dbg("%s: nonzero status: %d on endpoint %02x.", | |
326 | __FUNCTION__, urb->status, endpoint); | |
327 | } else { | |
328 | tty = port->tty; | |
329 | if (urb->actual_length) { | |
330 | for (i = 0; i < urb->actual_length ; ++i) { | |
331 | if (tty->flip.count >= TTY_FLIPBUF_SIZE) | |
332 | tty_flip_buffer_push(tty); | |
333 | tty_insert_flip_char(tty, data[i], 0); | |
334 | } | |
335 | tty_flip_buffer_push(tty); | |
336 | } else { | |
337 | dbg("%s: empty read urb received", __FUNCTION__); | |
338 | } | |
339 | ||
340 | /* Resubmit urb so we continue receiving */ | |
341 | if (port->open_count && urb->status != -ESHUTDOWN) { | |
342 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
343 | if (err) | |
7bb75aee AM |
344 | printk(KERN_ERR "%s: resubmit read urb failed. " |
345 | "(%d)", __FUNCTION__, err); | |
58cfe911 MU |
346 | } |
347 | } | |
348 | return; | |
349 | } | |
350 | ||
7bb75aee | 351 | static void option_outdat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
352 | { |
353 | struct usb_serial_port *port; | |
354 | ||
355 | dbg("%s", __FUNCTION__); | |
356 | ||
357 | port = (struct usb_serial_port *) urb->context; | |
358 | ||
359 | if (port->open_count) | |
360 | schedule_work(&port->work); | |
361 | } | |
362 | ||
7bb75aee | 363 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
364 | { |
365 | int err; | |
366 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
367 | struct option_port_private *portdata = usb_get_serial_port_data(port); | |
368 | struct usb_serial *serial = port->serial; | |
369 | ||
370 | dbg("%s", __FUNCTION__); | |
371 | dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); | |
372 | ||
373 | if (urb->status == 0) { | |
374 | struct usb_ctrlrequest *req_pkt = | |
375 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
376 | ||
377 | if (!req_pkt) { | |
378 | dbg("%s: NULL req_pkt\n", __FUNCTION__); | |
379 | return; | |
380 | } | |
7bb75aee AM |
381 | if ((req_pkt->bRequestType == 0xA1) && |
382 | (req_pkt->bRequest == 0x20)) { | |
58cfe911 MU |
383 | int old_dcd_state; |
384 | unsigned char signals = *((unsigned char *) | |
7bb75aee AM |
385 | urb->transfer_buffer + |
386 | sizeof(struct usb_ctrlrequest)); | |
58cfe911 MU |
387 | |
388 | dbg("%s: signal x%x", __FUNCTION__, signals); | |
389 | ||
390 | old_dcd_state = portdata->dcd_state; | |
391 | portdata->cts_state = 1; | |
392 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
393 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
394 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
395 | ||
7bb75aee AM |
396 | if (port->tty && !C_CLOCAL(port->tty) && |
397 | old_dcd_state && !portdata->dcd_state) | |
58cfe911 | 398 | tty_hangup(port->tty); |
7bb75aee AM |
399 | } else { |
400 | dbg("%s: type %x req %x", __FUNCTION__, | |
401 | req_pkt->bRequestType,req_pkt->bRequest); | |
402 | } | |
58cfe911 MU |
403 | } else |
404 | dbg("%s: error %d", __FUNCTION__, urb->status); | |
405 | ||
406 | /* Resubmit urb so we continue receiving IRQ data */ | |
407 | if (urb->status != -ESHUTDOWN) { | |
408 | urb->dev = serial->dev; | |
409 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
410 | if (err) | |
7bb75aee AM |
411 | dbg("%s: resubmit intr urb failed. (%d)", |
412 | __FUNCTION__, err); | |
58cfe911 MU |
413 | } |
414 | } | |
415 | ||
7bb75aee | 416 | static int option_write_room(struct usb_serial_port *port) |
58cfe911 MU |
417 | { |
418 | struct option_port_private *portdata; | |
419 | int i; | |
420 | int data_len = 0; | |
421 | struct urb *this_urb; | |
422 | ||
423 | portdata = usb_get_serial_port_data(port); | |
424 | ||
ba460e48 | 425 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
426 | this_urb = portdata->out_urbs[i]; |
427 | if (this_urb && this_urb->status != -EINPROGRESS) | |
428 | data_len += OUT_BUFLEN; | |
ba460e48 | 429 | } |
58cfe911 MU |
430 | |
431 | dbg("%s: %d", __FUNCTION__, data_len); | |
432 | return data_len; | |
433 | } | |
434 | ||
7bb75aee | 435 | static int option_chars_in_buffer(struct usb_serial_port *port) |
58cfe911 MU |
436 | { |
437 | struct option_port_private *portdata; | |
438 | int i; | |
439 | int data_len = 0; | |
440 | struct urb *this_urb; | |
441 | ||
442 | portdata = usb_get_serial_port_data(port); | |
443 | ||
ba460e48 | 444 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
445 | this_urb = portdata->out_urbs[i]; |
446 | if (this_urb && this_urb->status == -EINPROGRESS) | |
447 | data_len += this_urb->transfer_buffer_length; | |
ba460e48 | 448 | } |
58cfe911 MU |
449 | dbg("%s: %d", __FUNCTION__, data_len); |
450 | return data_len; | |
451 | } | |
452 | ||
7bb75aee | 453 | static int option_open(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 454 | { |
ba460e48 MU |
455 | struct option_port_private *portdata; |
456 | struct usb_serial *serial = port->serial; | |
457 | int i, err; | |
458 | struct urb *urb; | |
58cfe911 MU |
459 | |
460 | portdata = usb_get_serial_port_data(port); | |
461 | ||
462 | dbg("%s", __FUNCTION__); | |
463 | ||
464 | /* Set some sane defaults */ | |
465 | portdata->rts_state = 1; | |
466 | portdata->dtr_state = 1; | |
467 | ||
468 | /* Reset low level data toggle and start reading from endpoints */ | |
469 | for (i = 0; i < N_IN_URB; i++) { | |
470 | urb = portdata->in_urbs[i]; | |
471 | if (! urb) | |
472 | continue; | |
473 | if (urb->dev != serial->dev) { | |
7bb75aee AM |
474 | dbg("%s: dev %p != %p", __FUNCTION__, |
475 | urb->dev, serial->dev); | |
58cfe911 MU |
476 | continue; |
477 | } | |
478 | ||
7bb75aee AM |
479 | /* |
480 | * make sure endpoint data toggle is synchronized with the | |
481 | * device | |
482 | */ | |
58cfe911 MU |
483 | usb_clear_halt(urb->dev, urb->pipe); |
484 | ||
485 | err = usb_submit_urb(urb, GFP_KERNEL); | |
486 | if (err) { | |
7bb75aee AM |
487 | dbg("%s: submit urb %d failed (%d) %d", |
488 | __FUNCTION__, i, err, | |
58cfe911 MU |
489 | urb->transfer_buffer_length); |
490 | } | |
491 | } | |
492 | ||
493 | /* Reset low level data toggle on out endpoints */ | |
494 | for (i = 0; i < N_OUT_URB; i++) { | |
495 | urb = portdata->out_urbs[i]; | |
496 | if (! urb) | |
497 | continue; | |
498 | urb->dev = serial->dev; | |
7bb75aee AM |
499 | /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
500 | usb_pipeout(urb->pipe), 0); */ | |
58cfe911 MU |
501 | } |
502 | ||
503 | port->tty->low_latency = 1; | |
504 | ||
505 | option_send_setup(port); | |
506 | ||
507 | return (0); | |
508 | } | |
509 | ||
7bb75aee | 510 | static inline void stop_urb(struct urb *urb) |
58cfe911 | 511 | { |
242cf670 | 512 | if (urb && urb->status == -EINPROGRESS) |
58cfe911 | 513 | usb_kill_urb(urb); |
58cfe911 MU |
514 | } |
515 | ||
7bb75aee | 516 | static void option_close(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 517 | { |
ba460e48 MU |
518 | int i; |
519 | struct usb_serial *serial = port->serial; | |
520 | struct option_port_private *portdata; | |
58cfe911 MU |
521 | |
522 | dbg("%s", __FUNCTION__); | |
523 | portdata = usb_get_serial_port_data(port); | |
524 | ||
525 | portdata->rts_state = 0; | |
526 | portdata->dtr_state = 0; | |
527 | ||
528 | if (serial->dev) { | |
529 | option_send_setup(port); | |
530 | ||
531 | /* Stop reading/writing urbs */ | |
532 | for (i = 0; i < N_IN_URB; i++) | |
533 | stop_urb(portdata->in_urbs[i]); | |
534 | for (i = 0; i < N_OUT_URB; i++) | |
535 | stop_urb(portdata->out_urbs[i]); | |
536 | } | |
537 | port->tty = NULL; | |
538 | } | |
539 | ||
58cfe911 | 540 | /* Helper functions used by option_setup_urbs */ |
7bb75aee AM |
541 | static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, |
542 | int dir, void *ctx, char *buf, int len, | |
543 | void (*callback)(struct urb *, struct pt_regs *regs)) | |
58cfe911 MU |
544 | { |
545 | struct urb *urb; | |
546 | ||
547 | if (endpoint == -1) | |
548 | return NULL; /* endpoint not needed */ | |
549 | ||
550 | urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ | |
551 | if (urb == NULL) { | |
552 | dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); | |
553 | return NULL; | |
554 | } | |
555 | ||
556 | /* Fill URB using supplied data. */ | |
557 | usb_fill_bulk_urb(urb, serial->dev, | |
558 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
559 | buf, len, callback, ctx); | |
560 | ||
561 | return urb; | |
562 | } | |
563 | ||
564 | /* Setup urbs */ | |
7bb75aee | 565 | static void option_setup_urbs(struct usb_serial *serial) |
58cfe911 | 566 | { |
ba460e48 MU |
567 | int j; |
568 | struct usb_serial_port *port; | |
569 | struct option_port_private *portdata; | |
58cfe911 MU |
570 | |
571 | dbg("%s", __FUNCTION__); | |
572 | ||
573 | port = serial->port[0]; | |
574 | portdata = usb_get_serial_port_data(port); | |
575 | ||
576 | /* Do indat endpoints first */ | |
577 | for (j = 0; j <= N_IN_URB; ++j) { | |
578 | portdata->in_urbs[j] = option_setup_urb (serial, | |
579 | port->bulk_in_endpointAddress, USB_DIR_IN, port, | |
580 | portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); | |
581 | } | |
582 | ||
583 | /* outdat endpoints */ | |
584 | for (j = 0; j <= N_OUT_URB; ++j) { | |
585 | portdata->out_urbs[j] = option_setup_urb (serial, | |
586 | port->bulk_out_endpointAddress, USB_DIR_OUT, port, | |
587 | portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); | |
588 | } | |
589 | } | |
590 | ||
7bb75aee | 591 | static int option_send_setup(struct usb_serial_port *port) |
58cfe911 MU |
592 | { |
593 | struct usb_serial *serial = port->serial; | |
594 | struct option_port_private *portdata; | |
595 | ||
596 | dbg("%s", __FUNCTION__); | |
597 | ||
598 | portdata = usb_get_serial_port_data(port); | |
599 | ||
600 | if (port->tty) { | |
601 | int val = 0; | |
602 | if (portdata->dtr_state) | |
603 | val |= 0x01; | |
604 | if (portdata->rts_state) | |
605 | val |= 0x02; | |
606 | ||
7bb75aee AM |
607 | return usb_control_msg(serial->dev, |
608 | usb_rcvctrlpipe(serial->dev, 0), | |
609 | 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); | |
58cfe911 MU |
610 | } |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
7bb75aee | 615 | static int option_startup(struct usb_serial *serial) |
58cfe911 | 616 | { |
ba460e48 MU |
617 | int i, err; |
618 | struct usb_serial_port *port; | |
619 | struct option_port_private *portdata; | |
58cfe911 MU |
620 | |
621 | dbg("%s", __FUNCTION__); | |
622 | ||
623 | /* Now setup per port private data */ | |
624 | for (i = 0; i < serial->num_ports; i++) { | |
625 | port = serial->port[i]; | |
7bb75aee | 626 | portdata = kmalloc(sizeof(*portdata), GFP_KERNEL); |
58cfe911 | 627 | if (!portdata) { |
7bb75aee AM |
628 | dbg("%s: kmalloc for option_port_private (%d) failed!.", |
629 | __FUNCTION__, i); | |
58cfe911 MU |
630 | return (1); |
631 | } | |
632 | memset(portdata, 0, sizeof(struct option_port_private)); | |
633 | ||
634 | usb_set_serial_port_data(port, portdata); | |
635 | ||
636 | if (! port->interrupt_in_urb) | |
637 | continue; | |
638 | err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); | |
639 | if (err) | |
7bb75aee AM |
640 | dbg("%s: submit irq_in urb failed %d", |
641 | __FUNCTION__, err); | |
58cfe911 MU |
642 | } |
643 | ||
644 | option_setup_urbs(serial); | |
645 | ||
646 | return (0); | |
647 | } | |
648 | ||
7bb75aee | 649 | static void option_shutdown(struct usb_serial *serial) |
58cfe911 | 650 | { |
ba460e48 MU |
651 | int i, j; |
652 | struct usb_serial_port *port; | |
653 | struct option_port_private *portdata; | |
58cfe911 MU |
654 | |
655 | dbg("%s", __FUNCTION__); | |
656 | ||
657 | /* Stop reading/writing urbs */ | |
658 | for (i = 0; i < serial->num_ports; ++i) { | |
659 | port = serial->port[i]; | |
660 | portdata = usb_get_serial_port_data(port); | |
661 | for (j = 0; j < N_IN_URB; j++) | |
662 | stop_urb(portdata->in_urbs[j]); | |
663 | for (j = 0; j < N_OUT_URB; j++) | |
664 | stop_urb(portdata->out_urbs[j]); | |
665 | } | |
666 | ||
667 | /* Now free them */ | |
668 | for (i = 0; i < serial->num_ports; ++i) { | |
669 | port = serial->port[i]; | |
670 | portdata = usb_get_serial_port_data(port); | |
671 | ||
672 | for (j = 0; j < N_IN_URB; j++) { | |
673 | if (portdata->in_urbs[j]) { | |
674 | usb_free_urb(portdata->in_urbs[j]); | |
675 | portdata->in_urbs[j] = NULL; | |
676 | } | |
677 | } | |
678 | for (j = 0; j < N_OUT_URB; j++) { | |
679 | if (portdata->out_urbs[j]) { | |
680 | usb_free_urb(portdata->out_urbs[j]); | |
681 | portdata->out_urbs[j] = NULL; | |
682 | } | |
683 | } | |
684 | } | |
685 | ||
686 | /* Now free per port private data */ | |
687 | for (i = 0; i < serial->num_ports; i++) { | |
688 | port = serial->port[i]; | |
689 | kfree(usb_get_serial_port_data(port)); | |
690 | } | |
691 | } | |
692 | ||
693 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
694 | MODULE_DESCRIPTION(DRIVER_DESC); | |
695 | MODULE_VERSION(DRIVER_VERSION); | |
696 | MODULE_LICENSE("GPL"); | |
697 | ||
ba460e48 | 698 | #ifdef CONFIG_USB_DEBUG |
58cfe911 MU |
699 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
700 | MODULE_PARM_DESC(debug, "Debug messages"); | |
ba460e48 | 701 | #endif |
58cfe911 | 702 |