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Commit | Line | Data |
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58cfe911 | 1 | /* |
14f76cc7 | 2 | USB Driver for GSM modems |
58cfe911 MU |
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 | ||
b3fdab59 | 12 | History: see the git log. |
ba460e48 MU |
13 | |
14 | Work sponsored by: Sigos GmbH, Germany <info@sigos.de> | |
15 | ||
14f76cc7 MU |
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 | |
7c1c2f73 | 19 | - nonstandard flow (Option devices) control |
14f76cc7 MU |
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. | |
58cfe911 | 29 | */ |
ba460e48 | 30 | |
e37de9e0 | 31 | #define DRIVER_VERSION "v0.7.1" |
58cfe911 | 32 | #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" |
14f76cc7 | 33 | #define DRIVER_DESC "USB Driver for GSM modems" |
58cfe911 | 34 | |
58cfe911 MU |
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> | |
a969888c | 42 | #include <linux/usb/serial.h> |
58cfe911 MU |
43 | |
44 | /* Function prototypes */ | |
7bb75aee AM |
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); | |
58cfe911 | 52 | |
7d12e780 | 53 | static void option_instat_callback(struct urb *urb); |
58cfe911 | 54 | |
7bb75aee AM |
55 | static int option_write(struct usb_serial_port *port, |
56 | const unsigned char *buf, int count); | |
58cfe911 | 57 | |
7bb75aee AM |
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, | |
606d099c | 62 | struct ktermios *old); |
7bb75aee AM |
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); | |
58cfe911 MU |
68 | |
69 | /* Vendor and product IDs */ | |
14f76cc7 MU |
70 | #define OPTION_VENDOR_ID 0x0AF0 |
71 | #define HUAWEI_VENDOR_ID 0x12D1 | |
72 | #define AUDIOVOX_VENDOR_ID 0x0F3D | |
14f76cc7 | 73 | #define NOVATELWIRELESS_VENDOR_ID 0x1410 |
31fcbb73 | 74 | #define ANYDATA_VENDOR_ID 0x16d5 |
14f76cc7 MU |
75 | |
76 | #define OPTION_PRODUCT_OLD 0x5000 | |
77 | #define OPTION_PRODUCT_FUSION 0x6000 | |
78 | #define OPTION_PRODUCT_FUSION2 0x6300 | |
79 | #define OPTION_PRODUCT_COBRA 0x6500 | |
e37de9e0 | 80 | #define OPTION_PRODUCT_COBRA2 0x6600 |
14f76cc7 MU |
81 | #define HUAWEI_PRODUCT_E600 0x1001 |
82 | #define AUDIOVOX_PRODUCT_AIRCARD 0x0112 | |
14f76cc7 | 83 | #define NOVATELWIRELESS_PRODUCT_U740 0x1400 |
31fcbb73 | 84 | #define ANYDATA_PRODUCT_ID 0x6501 |
58cfe911 | 85 | |
58cfe911 MU |
86 | static struct usb_device_id option_ids[] = { |
87 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
ba460e48 MU |
88 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, |
89 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
14f76cc7 | 90 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, |
e37de9e0 | 91 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) }, |
b6137383 MU |
92 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
93 | { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) }, | |
14f76cc7 | 94 | { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) }, |
31fcbb73 | 95 | { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) }, |
14f76cc7 MU |
96 | { } /* Terminating entry */ |
97 | }; | |
98 | ||
99 | static struct usb_device_id option_ids1[] = { | |
100 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
101 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, | |
102 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
103 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, | |
e37de9e0 | 104 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) }, |
14f76cc7 MU |
105 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
106 | { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) }, | |
107 | { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) }, | |
31fcbb73 | 108 | { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) }, |
14f76cc7 MU |
109 | { } /* Terminating entry */ |
110 | }; | |
58cfe911 MU |
111 | |
112 | MODULE_DEVICE_TABLE(usb, option_ids); | |
113 | ||
114 | static struct usb_driver option_driver = { | |
58cfe911 MU |
115 | .name = "option", |
116 | .probe = usb_serial_probe, | |
117 | .disconnect = usb_serial_disconnect, | |
118 | .id_table = option_ids, | |
ba9dc657 | 119 | .no_dynamic_id = 1, |
58cfe911 MU |
120 | }; |
121 | ||
c30fe7f7 | 122 | /* The card has three separate interfaces, which the serial driver |
58cfe911 MU |
123 | * recognizes separately, thus num_port=1. |
124 | */ | |
14f76cc7 MU |
125 | |
126 | static struct usb_serial_driver option_1port_device = { | |
127 | .driver = { | |
128 | .owner = THIS_MODULE, | |
02b2ac5b | 129 | .name = "option1", |
14f76cc7 MU |
130 | }, |
131 | .description = "GSM modem (1-port)", | |
132 | .id_table = option_ids1, | |
ba460e48 MU |
133 | .num_interrupt_in = NUM_DONT_CARE, |
134 | .num_bulk_in = NUM_DONT_CARE, | |
135 | .num_bulk_out = NUM_DONT_CARE, | |
14f76cc7 | 136 | .num_ports = 1, |
ba460e48 MU |
137 | .open = option_open, |
138 | .close = option_close, | |
139 | .write = option_write, | |
140 | .write_room = option_write_room, | |
141 | .chars_in_buffer = option_chars_in_buffer, | |
142 | .throttle = option_rx_throttle, | |
143 | .unthrottle = option_rx_unthrottle, | |
144 | .ioctl = option_ioctl, | |
145 | .set_termios = option_set_termios, | |
146 | .break_ctl = option_break_ctl, | |
147 | .tiocmget = option_tiocmget, | |
148 | .tiocmset = option_tiocmset, | |
149 | .attach = option_startup, | |
150 | .shutdown = option_shutdown, | |
151 | .read_int_callback = option_instat_callback, | |
58cfe911 MU |
152 | }; |
153 | ||
ba460e48 | 154 | #ifdef CONFIG_USB_DEBUG |
58cfe911 | 155 | static int debug; |
ba460e48 MU |
156 | #else |
157 | #define debug 0 | |
158 | #endif | |
159 | ||
58cfe911 MU |
160 | /* per port private data */ |
161 | ||
ba460e48 MU |
162 | #define N_IN_URB 4 |
163 | #define N_OUT_URB 1 | |
b27c73dc | 164 | #define IN_BUFLEN 4096 |
ba460e48 | 165 | #define OUT_BUFLEN 128 |
58cfe911 MU |
166 | |
167 | struct option_port_private { | |
168 | /* Input endpoints and buffer for this port */ | |
ba460e48 MU |
169 | struct urb *in_urbs[N_IN_URB]; |
170 | char in_buffer[N_IN_URB][IN_BUFLEN]; | |
58cfe911 | 171 | /* Output endpoints and buffer for this port */ |
ba460e48 MU |
172 | struct urb *out_urbs[N_OUT_URB]; |
173 | char out_buffer[N_OUT_URB][OUT_BUFLEN]; | |
58cfe911 MU |
174 | |
175 | /* Settings for the port */ | |
ba460e48 MU |
176 | int rts_state; /* Handshaking pins (outputs) */ |
177 | int dtr_state; | |
178 | int cts_state; /* Handshaking pins (inputs) */ | |
179 | int dsr_state; | |
180 | int dcd_state; | |
181 | int ri_state; | |
182 | ||
183 | unsigned long tx_start_time[N_OUT_URB]; | |
58cfe911 MU |
184 | }; |
185 | ||
58cfe911 | 186 | /* Functions used by new usb-serial code. */ |
7bb75aee | 187 | static int __init option_init(void) |
58cfe911 MU |
188 | { |
189 | int retval; | |
14f76cc7 MU |
190 | retval = usb_serial_register(&option_1port_device); |
191 | if (retval) | |
192 | goto failed_1port_device_register; | |
58cfe911 MU |
193 | retval = usb_register(&option_driver); |
194 | if (retval) | |
195 | goto failed_driver_register; | |
196 | ||
197 | info(DRIVER_DESC ": " DRIVER_VERSION); | |
198 | ||
199 | return 0; | |
200 | ||
201 | failed_driver_register: | |
14f76cc7 MU |
202 | usb_serial_deregister (&option_1port_device); |
203 | failed_1port_device_register: | |
58cfe911 MU |
204 | return retval; |
205 | } | |
206 | ||
7bb75aee | 207 | static void __exit option_exit(void) |
58cfe911 MU |
208 | { |
209 | usb_deregister (&option_driver); | |
14f76cc7 | 210 | usb_serial_deregister (&option_1port_device); |
58cfe911 MU |
211 | } |
212 | ||
213 | module_init(option_init); | |
214 | module_exit(option_exit); | |
215 | ||
7bb75aee | 216 | static void option_rx_throttle(struct usb_serial_port *port) |
58cfe911 MU |
217 | { |
218 | dbg("%s", __FUNCTION__); | |
219 | } | |
220 | ||
7bb75aee | 221 | static void option_rx_unthrottle(struct usb_serial_port *port) |
58cfe911 MU |
222 | { |
223 | dbg("%s", __FUNCTION__); | |
224 | } | |
225 | ||
7bb75aee | 226 | static void option_break_ctl(struct usb_serial_port *port, int break_state) |
58cfe911 MU |
227 | { |
228 | /* Unfortunately, I don't know how to send a break */ | |
ba460e48 | 229 | dbg("%s", __FUNCTION__); |
58cfe911 MU |
230 | } |
231 | ||
7bb75aee | 232 | static void option_set_termios(struct usb_serial_port *port, |
606d099c | 233 | struct ktermios *old_termios) |
58cfe911 MU |
234 | { |
235 | dbg("%s", __FUNCTION__); | |
236 | ||
237 | option_send_setup(port); | |
238 | } | |
239 | ||
7bb75aee | 240 | static int option_tiocmget(struct usb_serial_port *port, struct file *file) |
58cfe911 | 241 | { |
ba460e48 MU |
242 | unsigned int value; |
243 | struct option_port_private *portdata; | |
58cfe911 MU |
244 | |
245 | portdata = usb_get_serial_port_data(port); | |
246 | ||
247 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
248 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
249 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
250 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
251 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
252 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
253 | ||
254 | return value; | |
255 | } | |
256 | ||
7bb75aee AM |
257 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
258 | unsigned int set, unsigned int clear) | |
58cfe911 | 259 | { |
ba460e48 | 260 | struct option_port_private *portdata; |
58cfe911 MU |
261 | |
262 | portdata = usb_get_serial_port_data(port); | |
263 | ||
264 | if (set & TIOCM_RTS) | |
265 | portdata->rts_state = 1; | |
266 | if (set & TIOCM_DTR) | |
267 | portdata->dtr_state = 1; | |
268 | ||
269 | if (clear & TIOCM_RTS) | |
270 | portdata->rts_state = 0; | |
271 | if (clear & TIOCM_DTR) | |
272 | portdata->dtr_state = 0; | |
273 | return option_send_setup(port); | |
274 | } | |
275 | ||
7bb75aee AM |
276 | static int option_ioctl(struct usb_serial_port *port, struct file *file, |
277 | unsigned int cmd, unsigned long arg) | |
58cfe911 MU |
278 | { |
279 | return -ENOIOCTLCMD; | |
280 | } | |
281 | ||
282 | /* Write */ | |
7bb75aee AM |
283 | static int option_write(struct usb_serial_port *port, |
284 | const unsigned char *buf, int count) | |
58cfe911 | 285 | { |
ba460e48 MU |
286 | struct option_port_private *portdata; |
287 | int i; | |
288 | int left, todo; | |
289 | struct urb *this_urb = NULL; /* spurious */ | |
290 | int err; | |
58cfe911 MU |
291 | |
292 | portdata = usb_get_serial_port_data(port); | |
293 | ||
294 | dbg("%s: write (%d chars)", __FUNCTION__, count); | |
295 | ||
58cfe911 MU |
296 | i = 0; |
297 | left = count; | |
ba460e48 | 298 | for (i=0; left > 0 && i < N_OUT_URB; i++) { |
58cfe911 MU |
299 | todo = left; |
300 | if (todo > OUT_BUFLEN) | |
301 | todo = OUT_BUFLEN; | |
302 | ||
ba460e48 MU |
303 | this_urb = portdata->out_urbs[i]; |
304 | if (this_urb->status == -EINPROGRESS) { | |
7bb75aee AM |
305 | if (time_before(jiffies, |
306 | portdata->tx_start_time[i] + 10 * HZ)) | |
58cfe911 | 307 | continue; |
58cfe911 | 308 | usb_unlink_urb(this_urb); |
ba460e48 | 309 | continue; |
58cfe911 | 310 | } |
ba460e48 | 311 | if (this_urb->status != 0) |
7bb75aee AM |
312 | dbg("usb_write %p failed (err=%d)", |
313 | this_urb, this_urb->status); | |
58cfe911 | 314 | |
7bb75aee AM |
315 | dbg("%s: endpoint %d buf %d", __FUNCTION__, |
316 | usb_pipeendpoint(this_urb->pipe), i); | |
58cfe911 | 317 | |
ba460e48 | 318 | /* send the data */ |
58cfe911 | 319 | memcpy (this_urb->transfer_buffer, buf, todo); |
58cfe911 MU |
320 | this_urb->transfer_buffer_length = todo; |
321 | ||
58cfe911 MU |
322 | this_urb->dev = port->serial->dev; |
323 | err = usb_submit_urb(this_urb, GFP_ATOMIC); | |
324 | if (err) { | |
7bb75aee AM |
325 | dbg("usb_submit_urb %p (write bulk) failed " |
326 | "(%d, has %d)", this_urb, | |
327 | err, this_urb->status); | |
58cfe911 MU |
328 | continue; |
329 | } | |
330 | portdata->tx_start_time[i] = jiffies; | |
331 | buf += todo; | |
332 | left -= todo; | |
333 | } | |
334 | ||
335 | count -= left; | |
58cfe911 MU |
336 | dbg("%s: wrote (did %d)", __FUNCTION__, count); |
337 | return count; | |
338 | } | |
339 | ||
7d12e780 | 340 | static void option_indat_callback(struct urb *urb) |
58cfe911 | 341 | { |
33f0f88f | 342 | int err; |
58cfe911 MU |
343 | int endpoint; |
344 | struct usb_serial_port *port; | |
345 | struct tty_struct *tty; | |
346 | unsigned char *data = urb->transfer_buffer; | |
347 | ||
348 | dbg("%s: %p", __FUNCTION__, urb); | |
349 | ||
350 | endpoint = usb_pipeendpoint(urb->pipe); | |
351 | port = (struct usb_serial_port *) urb->context; | |
352 | ||
353 | if (urb->status) { | |
354 | dbg("%s: nonzero status: %d on endpoint %02x.", | |
355 | __FUNCTION__, urb->status, endpoint); | |
356 | } else { | |
357 | tty = port->tty; | |
358 | if (urb->actual_length) { | |
33f0f88f AC |
359 | tty_buffer_request_room(tty, urb->actual_length); |
360 | tty_insert_flip_string(tty, data, urb->actual_length); | |
58cfe911 MU |
361 | tty_flip_buffer_push(tty); |
362 | } else { | |
363 | dbg("%s: empty read urb received", __FUNCTION__); | |
364 | } | |
365 | ||
366 | /* Resubmit urb so we continue receiving */ | |
367 | if (port->open_count && urb->status != -ESHUTDOWN) { | |
368 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
369 | if (err) | |
7bb75aee AM |
370 | printk(KERN_ERR "%s: resubmit read urb failed. " |
371 | "(%d)", __FUNCTION__, err); | |
58cfe911 MU |
372 | } |
373 | } | |
374 | return; | |
375 | } | |
376 | ||
7d12e780 | 377 | static void option_outdat_callback(struct urb *urb) |
58cfe911 MU |
378 | { |
379 | struct usb_serial_port *port; | |
380 | ||
381 | dbg("%s", __FUNCTION__); | |
382 | ||
383 | port = (struct usb_serial_port *) urb->context; | |
384 | ||
cf2c7481 | 385 | usb_serial_port_softint(port); |
58cfe911 MU |
386 | } |
387 | ||
7d12e780 | 388 | static void option_instat_callback(struct urb *urb) |
58cfe911 MU |
389 | { |
390 | int err; | |
391 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
392 | struct option_port_private *portdata = usb_get_serial_port_data(port); | |
393 | struct usb_serial *serial = port->serial; | |
394 | ||
395 | dbg("%s", __FUNCTION__); | |
396 | dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); | |
397 | ||
398 | if (urb->status == 0) { | |
399 | struct usb_ctrlrequest *req_pkt = | |
400 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
401 | ||
402 | if (!req_pkt) { | |
403 | dbg("%s: NULL req_pkt\n", __FUNCTION__); | |
404 | return; | |
405 | } | |
7bb75aee AM |
406 | if ((req_pkt->bRequestType == 0xA1) && |
407 | (req_pkt->bRequest == 0x20)) { | |
58cfe911 MU |
408 | int old_dcd_state; |
409 | unsigned char signals = *((unsigned char *) | |
7bb75aee AM |
410 | urb->transfer_buffer + |
411 | sizeof(struct usb_ctrlrequest)); | |
58cfe911 MU |
412 | |
413 | dbg("%s: signal x%x", __FUNCTION__, signals); | |
414 | ||
415 | old_dcd_state = portdata->dcd_state; | |
416 | portdata->cts_state = 1; | |
417 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
418 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
419 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
420 | ||
7bb75aee AM |
421 | if (port->tty && !C_CLOCAL(port->tty) && |
422 | old_dcd_state && !portdata->dcd_state) | |
58cfe911 | 423 | tty_hangup(port->tty); |
7bb75aee AM |
424 | } else { |
425 | dbg("%s: type %x req %x", __FUNCTION__, | |
426 | req_pkt->bRequestType,req_pkt->bRequest); | |
427 | } | |
58cfe911 MU |
428 | } else |
429 | dbg("%s: error %d", __FUNCTION__, urb->status); | |
430 | ||
431 | /* Resubmit urb so we continue receiving IRQ data */ | |
432 | if (urb->status != -ESHUTDOWN) { | |
433 | urb->dev = serial->dev; | |
434 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
435 | if (err) | |
7bb75aee AM |
436 | dbg("%s: resubmit intr urb failed. (%d)", |
437 | __FUNCTION__, err); | |
58cfe911 MU |
438 | } |
439 | } | |
440 | ||
7bb75aee | 441 | static int option_write_room(struct usb_serial_port *port) |
58cfe911 MU |
442 | { |
443 | struct option_port_private *portdata; | |
444 | int i; | |
445 | int data_len = 0; | |
446 | struct urb *this_urb; | |
447 | ||
448 | portdata = usb_get_serial_port_data(port); | |
449 | ||
ba460e48 | 450 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
451 | this_urb = portdata->out_urbs[i]; |
452 | if (this_urb && this_urb->status != -EINPROGRESS) | |
453 | data_len += OUT_BUFLEN; | |
ba460e48 | 454 | } |
58cfe911 MU |
455 | |
456 | dbg("%s: %d", __FUNCTION__, data_len); | |
457 | return data_len; | |
458 | } | |
459 | ||
7bb75aee | 460 | static int option_chars_in_buffer(struct usb_serial_port *port) |
58cfe911 MU |
461 | { |
462 | struct option_port_private *portdata; | |
463 | int i; | |
464 | int data_len = 0; | |
465 | struct urb *this_urb; | |
466 | ||
467 | portdata = usb_get_serial_port_data(port); | |
468 | ||
ba460e48 | 469 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
470 | this_urb = portdata->out_urbs[i]; |
471 | if (this_urb && this_urb->status == -EINPROGRESS) | |
472 | data_len += this_urb->transfer_buffer_length; | |
ba460e48 | 473 | } |
58cfe911 MU |
474 | dbg("%s: %d", __FUNCTION__, data_len); |
475 | return data_len; | |
476 | } | |
477 | ||
7bb75aee | 478 | static int option_open(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 479 | { |
ba460e48 MU |
480 | struct option_port_private *portdata; |
481 | struct usb_serial *serial = port->serial; | |
482 | int i, err; | |
483 | struct urb *urb; | |
58cfe911 MU |
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) { | |
7bb75aee AM |
499 | dbg("%s: dev %p != %p", __FUNCTION__, |
500 | urb->dev, serial->dev); | |
58cfe911 MU |
501 | continue; |
502 | } | |
503 | ||
7bb75aee AM |
504 | /* |
505 | * make sure endpoint data toggle is synchronized with the | |
506 | * device | |
507 | */ | |
58cfe911 MU |
508 | usb_clear_halt(urb->dev, urb->pipe); |
509 | ||
510 | err = usb_submit_urb(urb, GFP_KERNEL); | |
511 | if (err) { | |
7bb75aee AM |
512 | dbg("%s: submit urb %d failed (%d) %d", |
513 | __FUNCTION__, i, err, | |
58cfe911 MU |
514 | urb->transfer_buffer_length); |
515 | } | |
516 | } | |
517 | ||
518 | /* Reset low level data toggle on out endpoints */ | |
519 | for (i = 0; i < N_OUT_URB; i++) { | |
520 | urb = portdata->out_urbs[i]; | |
521 | if (! urb) | |
522 | continue; | |
523 | urb->dev = serial->dev; | |
7bb75aee AM |
524 | /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
525 | usb_pipeout(urb->pipe), 0); */ | |
58cfe911 MU |
526 | } |
527 | ||
528 | port->tty->low_latency = 1; | |
529 | ||
530 | option_send_setup(port); | |
531 | ||
532 | return (0); | |
533 | } | |
534 | ||
7bb75aee | 535 | static inline void stop_urb(struct urb *urb) |
58cfe911 | 536 | { |
242cf670 | 537 | if (urb && urb->status == -EINPROGRESS) |
58cfe911 | 538 | usb_kill_urb(urb); |
58cfe911 MU |
539 | } |
540 | ||
7bb75aee | 541 | static void option_close(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 542 | { |
ba460e48 MU |
543 | int i; |
544 | struct usb_serial *serial = port->serial; | |
545 | struct option_port_private *portdata; | |
58cfe911 MU |
546 | |
547 | dbg("%s", __FUNCTION__); | |
548 | portdata = usb_get_serial_port_data(port); | |
549 | ||
550 | portdata->rts_state = 0; | |
551 | portdata->dtr_state = 0; | |
552 | ||
553 | if (serial->dev) { | |
554 | option_send_setup(port); | |
555 | ||
556 | /* Stop reading/writing urbs */ | |
557 | for (i = 0; i < N_IN_URB; i++) | |
558 | stop_urb(portdata->in_urbs[i]); | |
559 | for (i = 0; i < N_OUT_URB; i++) | |
560 | stop_urb(portdata->out_urbs[i]); | |
561 | } | |
562 | port->tty = NULL; | |
563 | } | |
564 | ||
58cfe911 | 565 | /* Helper functions used by option_setup_urbs */ |
7bb75aee AM |
566 | static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, |
567 | int dir, void *ctx, char *buf, int len, | |
7d12e780 | 568 | void (*callback)(struct urb *)) |
58cfe911 MU |
569 | { |
570 | struct urb *urb; | |
571 | ||
572 | if (endpoint == -1) | |
573 | return NULL; /* endpoint not needed */ | |
574 | ||
575 | urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ | |
576 | if (urb == NULL) { | |
577 | dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); | |
578 | return NULL; | |
579 | } | |
580 | ||
581 | /* Fill URB using supplied data. */ | |
582 | usb_fill_bulk_urb(urb, serial->dev, | |
583 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
584 | buf, len, callback, ctx); | |
585 | ||
586 | return urb; | |
587 | } | |
588 | ||
589 | /* Setup urbs */ | |
7bb75aee | 590 | static void option_setup_urbs(struct usb_serial *serial) |
58cfe911 | 591 | { |
14f76cc7 | 592 | int i,j; |
ba460e48 MU |
593 | struct usb_serial_port *port; |
594 | struct option_port_private *portdata; | |
58cfe911 MU |
595 | |
596 | dbg("%s", __FUNCTION__); | |
597 | ||
14f76cc7 MU |
598 | for (i = 0; i < serial->num_ports; i++) { |
599 | port = serial->port[i]; | |
600 | portdata = usb_get_serial_port_data(port); | |
58cfe911 MU |
601 | |
602 | /* Do indat endpoints first */ | |
14f76cc7 MU |
603 | for (j = 0; j < N_IN_URB; ++j) { |
604 | portdata->in_urbs[j] = option_setup_urb (serial, | |
605 | port->bulk_in_endpointAddress, USB_DIR_IN, port, | |
606 | portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); | |
607 | } | |
58cfe911 | 608 | |
14f76cc7 MU |
609 | /* outdat endpoints */ |
610 | for (j = 0; j < N_OUT_URB; ++j) { | |
611 | portdata->out_urbs[j] = option_setup_urb (serial, | |
612 | port->bulk_out_endpointAddress, USB_DIR_OUT, port, | |
613 | portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); | |
614 | } | |
58cfe911 MU |
615 | } |
616 | } | |
617 | ||
7bb75aee | 618 | static int option_send_setup(struct usb_serial_port *port) |
58cfe911 MU |
619 | { |
620 | struct usb_serial *serial = port->serial; | |
621 | struct option_port_private *portdata; | |
622 | ||
623 | dbg("%s", __FUNCTION__); | |
624 | ||
625 | portdata = usb_get_serial_port_data(port); | |
626 | ||
627 | if (port->tty) { | |
628 | int val = 0; | |
629 | if (portdata->dtr_state) | |
630 | val |= 0x01; | |
631 | if (portdata->rts_state) | |
632 | val |= 0x02; | |
633 | ||
7bb75aee AM |
634 | return usb_control_msg(serial->dev, |
635 | usb_rcvctrlpipe(serial->dev, 0), | |
636 | 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); | |
58cfe911 MU |
637 | } |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
7bb75aee | 642 | static int option_startup(struct usb_serial *serial) |
58cfe911 | 643 | { |
ba460e48 MU |
644 | int i, err; |
645 | struct usb_serial_port *port; | |
646 | struct option_port_private *portdata; | |
58cfe911 MU |
647 | |
648 | dbg("%s", __FUNCTION__); | |
649 | ||
650 | /* Now setup per port private data */ | |
651 | for (i = 0; i < serial->num_ports; i++) { | |
652 | port = serial->port[i]; | |
80b6ca48 | 653 | portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); |
58cfe911 | 654 | if (!portdata) { |
7bb75aee AM |
655 | dbg("%s: kmalloc for option_port_private (%d) failed!.", |
656 | __FUNCTION__, i); | |
58cfe911 MU |
657 | return (1); |
658 | } | |
58cfe911 MU |
659 | |
660 | usb_set_serial_port_data(port, portdata); | |
661 | ||
662 | if (! port->interrupt_in_urb) | |
663 | continue; | |
664 | err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); | |
665 | if (err) | |
7bb75aee AM |
666 | dbg("%s: submit irq_in urb failed %d", |
667 | __FUNCTION__, err); | |
58cfe911 MU |
668 | } |
669 | ||
670 | option_setup_urbs(serial); | |
671 | ||
672 | return (0); | |
673 | } | |
674 | ||
7bb75aee | 675 | static void option_shutdown(struct usb_serial *serial) |
58cfe911 | 676 | { |
ba460e48 MU |
677 | int i, j; |
678 | struct usb_serial_port *port; | |
679 | struct option_port_private *portdata; | |
58cfe911 MU |
680 | |
681 | dbg("%s", __FUNCTION__); | |
682 | ||
683 | /* Stop reading/writing urbs */ | |
684 | for (i = 0; i < serial->num_ports; ++i) { | |
685 | port = serial->port[i]; | |
686 | portdata = usb_get_serial_port_data(port); | |
687 | for (j = 0; j < N_IN_URB; j++) | |
688 | stop_urb(portdata->in_urbs[j]); | |
689 | for (j = 0; j < N_OUT_URB; j++) | |
690 | stop_urb(portdata->out_urbs[j]); | |
691 | } | |
692 | ||
693 | /* Now free them */ | |
694 | for (i = 0; i < serial->num_ports; ++i) { | |
695 | port = serial->port[i]; | |
696 | portdata = usb_get_serial_port_data(port); | |
697 | ||
698 | for (j = 0; j < N_IN_URB; j++) { | |
699 | if (portdata->in_urbs[j]) { | |
700 | usb_free_urb(portdata->in_urbs[j]); | |
701 | portdata->in_urbs[j] = NULL; | |
702 | } | |
703 | } | |
704 | for (j = 0; j < N_OUT_URB; j++) { | |
705 | if (portdata->out_urbs[j]) { | |
706 | usb_free_urb(portdata->out_urbs[j]); | |
707 | portdata->out_urbs[j] = NULL; | |
708 | } | |
709 | } | |
710 | } | |
711 | ||
712 | /* Now free per port private data */ | |
713 | for (i = 0; i < serial->num_ports; i++) { | |
714 | port = serial->port[i]; | |
715 | kfree(usb_get_serial_port_data(port)); | |
716 | } | |
717 | } | |
718 | ||
719 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
720 | MODULE_DESCRIPTION(DRIVER_DESC); | |
721 | MODULE_VERSION(DRIVER_VERSION); | |
722 | MODULE_LICENSE("GPL"); | |
723 | ||
ba460e48 | 724 | #ifdef CONFIG_USB_DEBUG |
58cfe911 MU |
725 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
726 | MODULE_PARM_DESC(debug, "Debug messages"); | |
ba460e48 | 727 | #endif |
58cfe911 | 728 |