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 | |
b6137383 | 28 | 2005-09-10 v0.4.3 added HUAWEI E600 card and Audiovox AirCard |
ba460e48 MU |
29 | |
30 | Work sponsored by: Sigos GmbH, Germany <info@sigos.de> | |
31 | ||
58cfe911 | 32 | */ |
ba460e48 MU |
33 | |
34 | #define DRIVER_VERSION "v0.4" | |
58cfe911 MU |
35 | #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" |
36 | #define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver" | |
37 | ||
38 | #include <linux/config.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/jiffies.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/tty.h> | |
43 | #include <linux/tty_flip.h> | |
44 | #include <linux/module.h> | |
45 | #include <linux/usb.h> | |
46 | #include "usb-serial.h" | |
47 | ||
48 | /* Function prototypes */ | |
7bb75aee AM |
49 | static int option_open(struct usb_serial_port *port, struct file *filp); |
50 | static void option_close(struct usb_serial_port *port, struct file *filp); | |
51 | static int option_startup(struct usb_serial *serial); | |
52 | static void option_shutdown(struct usb_serial *serial); | |
53 | static void option_rx_throttle(struct usb_serial_port *port); | |
54 | static void option_rx_unthrottle(struct usb_serial_port *port); | |
55 | static int option_write_room(struct usb_serial_port *port); | |
58cfe911 MU |
56 | |
57 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs); | |
58 | ||
7bb75aee AM |
59 | static int option_write(struct usb_serial_port *port, |
60 | const unsigned char *buf, int count); | |
58cfe911 | 61 | |
7bb75aee AM |
62 | static int option_chars_in_buffer(struct usb_serial_port *port); |
63 | static int option_ioctl(struct usb_serial_port *port, struct file *file, | |
64 | unsigned int cmd, unsigned long arg); | |
65 | static void option_set_termios(struct usb_serial_port *port, | |
66 | struct termios *old); | |
67 | static void option_break_ctl(struct usb_serial_port *port, int break_state); | |
68 | static int option_tiocmget(struct usb_serial_port *port, struct file *file); | |
69 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, | |
70 | unsigned int set, unsigned int clear); | |
71 | static int option_send_setup(struct usb_serial_port *port); | |
58cfe911 MU |
72 | |
73 | /* Vendor and product IDs */ | |
ba460e48 | 74 | #define OPTION_VENDOR_ID 0x0AF0 |
b6137383 MU |
75 | #define HUAWEI_VENDOR_ID 0x12D1 |
76 | #define AUDIOVOX_VENDOR_ID 0x0F3D | |
ba460e48 MU |
77 | |
78 | #define OPTION_PRODUCT_OLD 0x5000 | |
79 | #define OPTION_PRODUCT_FUSION 0x6000 | |
80 | #define OPTION_PRODUCT_FUSION2 0x6300 | |
b6137383 MU |
81 | #define HUAWEI_PRODUCT_E600 0x1001 |
82 | #define AUDIOVOX_PRODUCT_AIRCARD 0x0112 | |
58cfe911 | 83 | |
58cfe911 MU |
84 | static struct usb_device_id option_ids[] = { |
85 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
ba460e48 MU |
86 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, |
87 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
b6137383 MU |
88 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
89 | { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) }, | |
58cfe911 MU |
90 | { } /* Terminating entry */ |
91 | }; | |
92 | ||
93 | MODULE_DEVICE_TABLE(usb, option_ids); | |
94 | ||
95 | static struct usb_driver option_driver = { | |
96 | .owner = THIS_MODULE, | |
97 | .name = "option", | |
98 | .probe = usb_serial_probe, | |
99 | .disconnect = usb_serial_disconnect, | |
100 | .id_table = option_ids, | |
101 | }; | |
102 | ||
103 | /* The card has three separate interfaces, wich the serial driver | |
104 | * recognizes separately, thus num_port=1. | |
105 | */ | |
106 | static struct usb_serial_device_type option_3port_device = { | |
ba460e48 MU |
107 | .owner = THIS_MODULE, |
108 | .name = "Option 3G data card", | |
109 | .short_name = "option", | |
110 | .id_table = option_ids, | |
111 | .num_interrupt_in = NUM_DONT_CARE, | |
112 | .num_bulk_in = NUM_DONT_CARE, | |
113 | .num_bulk_out = NUM_DONT_CARE, | |
114 | .num_ports = 1, /* 3, but the card reports its ports separately */ | |
115 | .open = option_open, | |
116 | .close = option_close, | |
117 | .write = option_write, | |
118 | .write_room = option_write_room, | |
119 | .chars_in_buffer = option_chars_in_buffer, | |
120 | .throttle = option_rx_throttle, | |
121 | .unthrottle = option_rx_unthrottle, | |
122 | .ioctl = option_ioctl, | |
123 | .set_termios = option_set_termios, | |
124 | .break_ctl = option_break_ctl, | |
125 | .tiocmget = option_tiocmget, | |
126 | .tiocmset = option_tiocmset, | |
127 | .attach = option_startup, | |
128 | .shutdown = option_shutdown, | |
129 | .read_int_callback = option_instat_callback, | |
58cfe911 MU |
130 | }; |
131 | ||
ba460e48 | 132 | #ifdef CONFIG_USB_DEBUG |
58cfe911 | 133 | static int debug; |
ba460e48 MU |
134 | #else |
135 | #define debug 0 | |
136 | #endif | |
137 | ||
58cfe911 MU |
138 | /* per port private data */ |
139 | ||
ba460e48 MU |
140 | #define N_IN_URB 4 |
141 | #define N_OUT_URB 1 | |
142 | #define IN_BUFLEN 1024 | |
143 | #define OUT_BUFLEN 128 | |
58cfe911 MU |
144 | |
145 | struct option_port_private { | |
146 | /* Input endpoints and buffer for this port */ | |
ba460e48 MU |
147 | struct urb *in_urbs[N_IN_URB]; |
148 | char in_buffer[N_IN_URB][IN_BUFLEN]; | |
58cfe911 | 149 | /* Output endpoints and buffer for this port */ |
ba460e48 MU |
150 | struct urb *out_urbs[N_OUT_URB]; |
151 | char out_buffer[N_OUT_URB][OUT_BUFLEN]; | |
58cfe911 MU |
152 | |
153 | /* Settings for the port */ | |
ba460e48 MU |
154 | int rts_state; /* Handshaking pins (outputs) */ |
155 | int dtr_state; | |
156 | int cts_state; /* Handshaking pins (inputs) */ | |
157 | int dsr_state; | |
158 | int dcd_state; | |
159 | int ri_state; | |
160 | ||
161 | unsigned long tx_start_time[N_OUT_URB]; | |
58cfe911 MU |
162 | }; |
163 | ||
58cfe911 | 164 | /* Functions used by new usb-serial code. */ |
7bb75aee | 165 | static int __init option_init(void) |
58cfe911 MU |
166 | { |
167 | int retval; | |
168 | retval = usb_serial_register(&option_3port_device); | |
169 | if (retval) | |
170 | goto failed_3port_device_register; | |
171 | retval = usb_register(&option_driver); | |
172 | if (retval) | |
173 | goto failed_driver_register; | |
174 | ||
175 | info(DRIVER_DESC ": " DRIVER_VERSION); | |
176 | ||
177 | return 0; | |
178 | ||
179 | failed_driver_register: | |
180 | usb_serial_deregister (&option_3port_device); | |
181 | failed_3port_device_register: | |
182 | return retval; | |
183 | } | |
184 | ||
7bb75aee | 185 | static void __exit option_exit(void) |
58cfe911 MU |
186 | { |
187 | usb_deregister (&option_driver); | |
188 | usb_serial_deregister (&option_3port_device); | |
189 | } | |
190 | ||
191 | module_init(option_init); | |
192 | module_exit(option_exit); | |
193 | ||
7bb75aee | 194 | static void option_rx_throttle(struct usb_serial_port *port) |
58cfe911 MU |
195 | { |
196 | dbg("%s", __FUNCTION__); | |
197 | } | |
198 | ||
7bb75aee | 199 | static void option_rx_unthrottle(struct usb_serial_port *port) |
58cfe911 MU |
200 | { |
201 | dbg("%s", __FUNCTION__); | |
202 | } | |
203 | ||
7bb75aee | 204 | static void option_break_ctl(struct usb_serial_port *port, int break_state) |
58cfe911 MU |
205 | { |
206 | /* Unfortunately, I don't know how to send a break */ | |
ba460e48 | 207 | dbg("%s", __FUNCTION__); |
58cfe911 MU |
208 | } |
209 | ||
7bb75aee AM |
210 | static void option_set_termios(struct usb_serial_port *port, |
211 | struct termios *old_termios) | |
58cfe911 MU |
212 | { |
213 | dbg("%s", __FUNCTION__); | |
214 | ||
215 | option_send_setup(port); | |
216 | } | |
217 | ||
7bb75aee | 218 | static int option_tiocmget(struct usb_serial_port *port, struct file *file) |
58cfe911 | 219 | { |
ba460e48 MU |
220 | unsigned int value; |
221 | struct option_port_private *portdata; | |
58cfe911 MU |
222 | |
223 | portdata = usb_get_serial_port_data(port); | |
224 | ||
225 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
226 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
227 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
228 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
229 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
230 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
231 | ||
232 | return value; | |
233 | } | |
234 | ||
7bb75aee AM |
235 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
236 | unsigned int set, unsigned int clear) | |
58cfe911 | 237 | { |
ba460e48 | 238 | struct option_port_private *portdata; |
58cfe911 MU |
239 | |
240 | portdata = usb_get_serial_port_data(port); | |
241 | ||
242 | if (set & TIOCM_RTS) | |
243 | portdata->rts_state = 1; | |
244 | if (set & TIOCM_DTR) | |
245 | portdata->dtr_state = 1; | |
246 | ||
247 | if (clear & TIOCM_RTS) | |
248 | portdata->rts_state = 0; | |
249 | if (clear & TIOCM_DTR) | |
250 | portdata->dtr_state = 0; | |
251 | return option_send_setup(port); | |
252 | } | |
253 | ||
7bb75aee AM |
254 | static int option_ioctl(struct usb_serial_port *port, struct file *file, |
255 | unsigned int cmd, unsigned long arg) | |
58cfe911 MU |
256 | { |
257 | return -ENOIOCTLCMD; | |
258 | } | |
259 | ||
260 | /* Write */ | |
7bb75aee AM |
261 | static int option_write(struct usb_serial_port *port, |
262 | const unsigned char *buf, int count) | |
58cfe911 | 263 | { |
ba460e48 MU |
264 | struct option_port_private *portdata; |
265 | int i; | |
266 | int left, todo; | |
267 | struct urb *this_urb = NULL; /* spurious */ | |
268 | int err; | |
58cfe911 MU |
269 | |
270 | portdata = usb_get_serial_port_data(port); | |
271 | ||
272 | dbg("%s: write (%d chars)", __FUNCTION__, count); | |
273 | ||
58cfe911 MU |
274 | i = 0; |
275 | left = count; | |
ba460e48 | 276 | for (i=0; left > 0 && i < N_OUT_URB; i++) { |
58cfe911 MU |
277 | todo = left; |
278 | if (todo > OUT_BUFLEN) | |
279 | todo = OUT_BUFLEN; | |
280 | ||
ba460e48 MU |
281 | this_urb = portdata->out_urbs[i]; |
282 | if (this_urb->status == -EINPROGRESS) { | |
7bb75aee AM |
283 | if (time_before(jiffies, |
284 | portdata->tx_start_time[i] + 10 * HZ)) | |
58cfe911 | 285 | continue; |
58cfe911 | 286 | usb_unlink_urb(this_urb); |
ba460e48 | 287 | continue; |
58cfe911 | 288 | } |
ba460e48 | 289 | if (this_urb->status != 0) |
7bb75aee AM |
290 | dbg("usb_write %p failed (err=%d)", |
291 | this_urb, this_urb->status); | |
58cfe911 | 292 | |
7bb75aee AM |
293 | dbg("%s: endpoint %d buf %d", __FUNCTION__, |
294 | usb_pipeendpoint(this_urb->pipe), i); | |
58cfe911 | 295 | |
ba460e48 | 296 | /* send the data */ |
58cfe911 | 297 | memcpy (this_urb->transfer_buffer, buf, todo); |
58cfe911 MU |
298 | this_urb->transfer_buffer_length = todo; |
299 | ||
58cfe911 MU |
300 | this_urb->dev = port->serial->dev; |
301 | err = usb_submit_urb(this_urb, GFP_ATOMIC); | |
302 | if (err) { | |
7bb75aee AM |
303 | dbg("usb_submit_urb %p (write bulk) failed " |
304 | "(%d, has %d)", this_urb, | |
305 | err, this_urb->status); | |
58cfe911 MU |
306 | continue; |
307 | } | |
308 | portdata->tx_start_time[i] = jiffies; | |
309 | buf += todo; | |
310 | left -= todo; | |
311 | } | |
312 | ||
313 | count -= left; | |
58cfe911 MU |
314 | dbg("%s: wrote (did %d)", __FUNCTION__, count); |
315 | return count; | |
316 | } | |
317 | ||
7bb75aee | 318 | static void option_indat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 | 319 | { |
ba460e48 | 320 | int i, err; |
58cfe911 MU |
321 | int endpoint; |
322 | struct usb_serial_port *port; | |
323 | struct tty_struct *tty; | |
324 | unsigned char *data = urb->transfer_buffer; | |
325 | ||
326 | dbg("%s: %p", __FUNCTION__, urb); | |
327 | ||
328 | endpoint = usb_pipeendpoint(urb->pipe); | |
329 | port = (struct usb_serial_port *) urb->context; | |
330 | ||
331 | if (urb->status) { | |
332 | dbg("%s: nonzero status: %d on endpoint %02x.", | |
333 | __FUNCTION__, urb->status, endpoint); | |
334 | } else { | |
335 | tty = port->tty; | |
336 | if (urb->actual_length) { | |
337 | for (i = 0; i < urb->actual_length ; ++i) { | |
338 | if (tty->flip.count >= TTY_FLIPBUF_SIZE) | |
339 | tty_flip_buffer_push(tty); | |
340 | tty_insert_flip_char(tty, data[i], 0); | |
341 | } | |
342 | tty_flip_buffer_push(tty); | |
343 | } else { | |
344 | dbg("%s: empty read urb received", __FUNCTION__); | |
345 | } | |
346 | ||
347 | /* Resubmit urb so we continue receiving */ | |
348 | if (port->open_count && urb->status != -ESHUTDOWN) { | |
349 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
350 | if (err) | |
7bb75aee AM |
351 | printk(KERN_ERR "%s: resubmit read urb failed. " |
352 | "(%d)", __FUNCTION__, err); | |
58cfe911 MU |
353 | } |
354 | } | |
355 | return; | |
356 | } | |
357 | ||
7bb75aee | 358 | static void option_outdat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
359 | { |
360 | struct usb_serial_port *port; | |
361 | ||
362 | dbg("%s", __FUNCTION__); | |
363 | ||
364 | port = (struct usb_serial_port *) urb->context; | |
365 | ||
366 | if (port->open_count) | |
367 | schedule_work(&port->work); | |
368 | } | |
369 | ||
7bb75aee | 370 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
371 | { |
372 | int err; | |
373 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
374 | struct option_port_private *portdata = usb_get_serial_port_data(port); | |
375 | struct usb_serial *serial = port->serial; | |
376 | ||
377 | dbg("%s", __FUNCTION__); | |
378 | dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); | |
379 | ||
380 | if (urb->status == 0) { | |
381 | struct usb_ctrlrequest *req_pkt = | |
382 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
383 | ||
384 | if (!req_pkt) { | |
385 | dbg("%s: NULL req_pkt\n", __FUNCTION__); | |
386 | return; | |
387 | } | |
7bb75aee AM |
388 | if ((req_pkt->bRequestType == 0xA1) && |
389 | (req_pkt->bRequest == 0x20)) { | |
58cfe911 MU |
390 | int old_dcd_state; |
391 | unsigned char signals = *((unsigned char *) | |
7bb75aee AM |
392 | urb->transfer_buffer + |
393 | sizeof(struct usb_ctrlrequest)); | |
58cfe911 MU |
394 | |
395 | dbg("%s: signal x%x", __FUNCTION__, signals); | |
396 | ||
397 | old_dcd_state = portdata->dcd_state; | |
398 | portdata->cts_state = 1; | |
399 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
400 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
401 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
402 | ||
7bb75aee AM |
403 | if (port->tty && !C_CLOCAL(port->tty) && |
404 | old_dcd_state && !portdata->dcd_state) | |
58cfe911 | 405 | tty_hangup(port->tty); |
7bb75aee AM |
406 | } else { |
407 | dbg("%s: type %x req %x", __FUNCTION__, | |
408 | req_pkt->bRequestType,req_pkt->bRequest); | |
409 | } | |
58cfe911 MU |
410 | } else |
411 | dbg("%s: error %d", __FUNCTION__, urb->status); | |
412 | ||
413 | /* Resubmit urb so we continue receiving IRQ data */ | |
414 | if (urb->status != -ESHUTDOWN) { | |
415 | urb->dev = serial->dev; | |
416 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
417 | if (err) | |
7bb75aee AM |
418 | dbg("%s: resubmit intr urb failed. (%d)", |
419 | __FUNCTION__, err); | |
58cfe911 MU |
420 | } |
421 | } | |
422 | ||
7bb75aee | 423 | static int option_write_room(struct usb_serial_port *port) |
58cfe911 MU |
424 | { |
425 | struct option_port_private *portdata; | |
426 | int i; | |
427 | int data_len = 0; | |
428 | struct urb *this_urb; | |
429 | ||
430 | portdata = usb_get_serial_port_data(port); | |
431 | ||
ba460e48 | 432 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
433 | this_urb = portdata->out_urbs[i]; |
434 | if (this_urb && this_urb->status != -EINPROGRESS) | |
435 | data_len += OUT_BUFLEN; | |
ba460e48 | 436 | } |
58cfe911 MU |
437 | |
438 | dbg("%s: %d", __FUNCTION__, data_len); | |
439 | return data_len; | |
440 | } | |
441 | ||
7bb75aee | 442 | static int option_chars_in_buffer(struct usb_serial_port *port) |
58cfe911 MU |
443 | { |
444 | struct option_port_private *portdata; | |
445 | int i; | |
446 | int data_len = 0; | |
447 | struct urb *this_urb; | |
448 | ||
449 | portdata = usb_get_serial_port_data(port); | |
450 | ||
ba460e48 | 451 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
452 | this_urb = portdata->out_urbs[i]; |
453 | if (this_urb && this_urb->status == -EINPROGRESS) | |
454 | data_len += this_urb->transfer_buffer_length; | |
ba460e48 | 455 | } |
58cfe911 MU |
456 | dbg("%s: %d", __FUNCTION__, data_len); |
457 | return data_len; | |
458 | } | |
459 | ||
7bb75aee | 460 | static int option_open(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 461 | { |
ba460e48 MU |
462 | struct option_port_private *portdata; |
463 | struct usb_serial *serial = port->serial; | |
464 | int i, err; | |
465 | struct urb *urb; | |
58cfe911 MU |
466 | |
467 | portdata = usb_get_serial_port_data(port); | |
468 | ||
469 | dbg("%s", __FUNCTION__); | |
470 | ||
471 | /* Set some sane defaults */ | |
472 | portdata->rts_state = 1; | |
473 | portdata->dtr_state = 1; | |
474 | ||
475 | /* Reset low level data toggle and start reading from endpoints */ | |
476 | for (i = 0; i < N_IN_URB; i++) { | |
477 | urb = portdata->in_urbs[i]; | |
478 | if (! urb) | |
479 | continue; | |
480 | if (urb->dev != serial->dev) { | |
7bb75aee AM |
481 | dbg("%s: dev %p != %p", __FUNCTION__, |
482 | urb->dev, serial->dev); | |
58cfe911 MU |
483 | continue; |
484 | } | |
485 | ||
7bb75aee AM |
486 | /* |
487 | * make sure endpoint data toggle is synchronized with the | |
488 | * device | |
489 | */ | |
58cfe911 MU |
490 | usb_clear_halt(urb->dev, urb->pipe); |
491 | ||
492 | err = usb_submit_urb(urb, GFP_KERNEL); | |
493 | if (err) { | |
7bb75aee AM |
494 | dbg("%s: submit urb %d failed (%d) %d", |
495 | __FUNCTION__, i, err, | |
58cfe911 MU |
496 | urb->transfer_buffer_length); |
497 | } | |
498 | } | |
499 | ||
500 | /* Reset low level data toggle on out endpoints */ | |
501 | for (i = 0; i < N_OUT_URB; i++) { | |
502 | urb = portdata->out_urbs[i]; | |
503 | if (! urb) | |
504 | continue; | |
505 | urb->dev = serial->dev; | |
7bb75aee AM |
506 | /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
507 | usb_pipeout(urb->pipe), 0); */ | |
58cfe911 MU |
508 | } |
509 | ||
510 | port->tty->low_latency = 1; | |
511 | ||
512 | option_send_setup(port); | |
513 | ||
514 | return (0); | |
515 | } | |
516 | ||
7bb75aee | 517 | static inline void stop_urb(struct urb *urb) |
58cfe911 | 518 | { |
242cf670 | 519 | if (urb && urb->status == -EINPROGRESS) |
58cfe911 | 520 | usb_kill_urb(urb); |
58cfe911 MU |
521 | } |
522 | ||
7bb75aee | 523 | static void option_close(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 524 | { |
ba460e48 MU |
525 | int i; |
526 | struct usb_serial *serial = port->serial; | |
527 | struct option_port_private *portdata; | |
58cfe911 MU |
528 | |
529 | dbg("%s", __FUNCTION__); | |
530 | portdata = usb_get_serial_port_data(port); | |
531 | ||
532 | portdata->rts_state = 0; | |
533 | portdata->dtr_state = 0; | |
534 | ||
535 | if (serial->dev) { | |
536 | option_send_setup(port); | |
537 | ||
538 | /* Stop reading/writing urbs */ | |
539 | for (i = 0; i < N_IN_URB; i++) | |
540 | stop_urb(portdata->in_urbs[i]); | |
541 | for (i = 0; i < N_OUT_URB; i++) | |
542 | stop_urb(portdata->out_urbs[i]); | |
543 | } | |
544 | port->tty = NULL; | |
545 | } | |
546 | ||
58cfe911 | 547 | /* Helper functions used by option_setup_urbs */ |
7bb75aee AM |
548 | static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, |
549 | int dir, void *ctx, char *buf, int len, | |
550 | void (*callback)(struct urb *, struct pt_regs *regs)) | |
58cfe911 MU |
551 | { |
552 | struct urb *urb; | |
553 | ||
554 | if (endpoint == -1) | |
555 | return NULL; /* endpoint not needed */ | |
556 | ||
557 | urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ | |
558 | if (urb == NULL) { | |
559 | dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); | |
560 | return NULL; | |
561 | } | |
562 | ||
563 | /* Fill URB using supplied data. */ | |
564 | usb_fill_bulk_urb(urb, serial->dev, | |
565 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
566 | buf, len, callback, ctx); | |
567 | ||
568 | return urb; | |
569 | } | |
570 | ||
571 | /* Setup urbs */ | |
7bb75aee | 572 | static void option_setup_urbs(struct usb_serial *serial) |
58cfe911 | 573 | { |
ba460e48 MU |
574 | int j; |
575 | struct usb_serial_port *port; | |
576 | struct option_port_private *portdata; | |
58cfe911 MU |
577 | |
578 | dbg("%s", __FUNCTION__); | |
579 | ||
580 | port = serial->port[0]; | |
581 | portdata = usb_get_serial_port_data(port); | |
582 | ||
583 | /* Do indat endpoints first */ | |
584 | for (j = 0; j <= N_IN_URB; ++j) { | |
585 | portdata->in_urbs[j] = option_setup_urb (serial, | |
586 | port->bulk_in_endpointAddress, USB_DIR_IN, port, | |
587 | portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); | |
588 | } | |
589 | ||
590 | /* outdat endpoints */ | |
591 | for (j = 0; j <= N_OUT_URB; ++j) { | |
592 | portdata->out_urbs[j] = option_setup_urb (serial, | |
593 | port->bulk_out_endpointAddress, USB_DIR_OUT, port, | |
594 | portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); | |
595 | } | |
596 | } | |
597 | ||
7bb75aee | 598 | static int option_send_setup(struct usb_serial_port *port) |
58cfe911 MU |
599 | { |
600 | struct usb_serial *serial = port->serial; | |
601 | struct option_port_private *portdata; | |
602 | ||
603 | dbg("%s", __FUNCTION__); | |
604 | ||
605 | portdata = usb_get_serial_port_data(port); | |
606 | ||
607 | if (port->tty) { | |
608 | int val = 0; | |
609 | if (portdata->dtr_state) | |
610 | val |= 0x01; | |
611 | if (portdata->rts_state) | |
612 | val |= 0x02; | |
613 | ||
7bb75aee AM |
614 | return usb_control_msg(serial->dev, |
615 | usb_rcvctrlpipe(serial->dev, 0), | |
616 | 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); | |
58cfe911 MU |
617 | } |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
7bb75aee | 622 | static int option_startup(struct usb_serial *serial) |
58cfe911 | 623 | { |
ba460e48 MU |
624 | int i, err; |
625 | struct usb_serial_port *port; | |
626 | struct option_port_private *portdata; | |
58cfe911 MU |
627 | |
628 | dbg("%s", __FUNCTION__); | |
629 | ||
630 | /* Now setup per port private data */ | |
631 | for (i = 0; i < serial->num_ports; i++) { | |
632 | port = serial->port[i]; | |
7bb75aee | 633 | portdata = kmalloc(sizeof(*portdata), GFP_KERNEL); |
58cfe911 | 634 | if (!portdata) { |
7bb75aee AM |
635 | dbg("%s: kmalloc for option_port_private (%d) failed!.", |
636 | __FUNCTION__, i); | |
58cfe911 MU |
637 | return (1); |
638 | } | |
639 | memset(portdata, 0, sizeof(struct option_port_private)); | |
640 | ||
641 | usb_set_serial_port_data(port, portdata); | |
642 | ||
643 | if (! port->interrupt_in_urb) | |
644 | continue; | |
645 | err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); | |
646 | if (err) | |
7bb75aee AM |
647 | dbg("%s: submit irq_in urb failed %d", |
648 | __FUNCTION__, err); | |
58cfe911 MU |
649 | } |
650 | ||
651 | option_setup_urbs(serial); | |
652 | ||
653 | return (0); | |
654 | } | |
655 | ||
7bb75aee | 656 | static void option_shutdown(struct usb_serial *serial) |
58cfe911 | 657 | { |
ba460e48 MU |
658 | int i, j; |
659 | struct usb_serial_port *port; | |
660 | struct option_port_private *portdata; | |
58cfe911 MU |
661 | |
662 | dbg("%s", __FUNCTION__); | |
663 | ||
664 | /* Stop reading/writing urbs */ | |
665 | for (i = 0; i < serial->num_ports; ++i) { | |
666 | port = serial->port[i]; | |
667 | portdata = usb_get_serial_port_data(port); | |
668 | for (j = 0; j < N_IN_URB; j++) | |
669 | stop_urb(portdata->in_urbs[j]); | |
670 | for (j = 0; j < N_OUT_URB; j++) | |
671 | stop_urb(portdata->out_urbs[j]); | |
672 | } | |
673 | ||
674 | /* Now free them */ | |
675 | for (i = 0; i < serial->num_ports; ++i) { | |
676 | port = serial->port[i]; | |
677 | portdata = usb_get_serial_port_data(port); | |
678 | ||
679 | for (j = 0; j < N_IN_URB; j++) { | |
680 | if (portdata->in_urbs[j]) { | |
681 | usb_free_urb(portdata->in_urbs[j]); | |
682 | portdata->in_urbs[j] = NULL; | |
683 | } | |
684 | } | |
685 | for (j = 0; j < N_OUT_URB; j++) { | |
686 | if (portdata->out_urbs[j]) { | |
687 | usb_free_urb(portdata->out_urbs[j]); | |
688 | portdata->out_urbs[j] = NULL; | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
693 | /* Now free per port private data */ | |
694 | for (i = 0; i < serial->num_ports; i++) { | |
695 | port = serial->port[i]; | |
696 | kfree(usb_get_serial_port_data(port)); | |
697 | } | |
698 | } | |
699 | ||
700 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
701 | MODULE_DESCRIPTION(DRIVER_DESC); | |
702 | MODULE_VERSION(DRIVER_VERSION); | |
703 | MODULE_LICENSE("GPL"); | |
704 | ||
ba460e48 | 705 | #ifdef CONFIG_USB_DEBUG |
58cfe911 MU |
706 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
707 | MODULE_PARM_DESC(debug, "Debug messages"); | |
ba460e48 | 708 | #endif |
58cfe911 | 709 |