Commit | Line | Data |
---|---|---|
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 | |
19 | - nonstandard flow (Option devices) and multiplex (Sierra) control | |
20 | - controlling the baud rate doesn't make sense | |
21 | ||
22 | This driver is named "option" because the most common device it's | |
23 | used for is a PC-Card (with an internal OHCI-USB interface, behind | |
24 | which the GSM interface sits), made by Option Inc. | |
25 | ||
26 | Some of the "one port" devices actually exhibit multiple USB instances | |
27 | on the USB bus. This is not a bug, these ports are used for different | |
28 | device features. | |
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 MU |
52 | |
53 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs); | |
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, | |
62 | struct termios *old); | |
63 | static void option_break_ctl(struct usb_serial_port *port, int break_state); | |
64 | static int option_tiocmget(struct usb_serial_port *port, struct file *file); | |
65 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, | |
66 | unsigned int set, unsigned int clear); | |
67 | static int option_send_setup(struct usb_serial_port *port); | |
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 | |
73 | #define SIERRAWIRELESS_VENDOR_ID 0x1199 | |
74 | #define NOVATELWIRELESS_VENDOR_ID 0x1410 | |
31fcbb73 | 75 | #define ANYDATA_VENDOR_ID 0x16d5 |
14f76cc7 MU |
76 | |
77 | #define OPTION_PRODUCT_OLD 0x5000 | |
78 | #define OPTION_PRODUCT_FUSION 0x6000 | |
79 | #define OPTION_PRODUCT_FUSION2 0x6300 | |
80 | #define OPTION_PRODUCT_COBRA 0x6500 | |
e37de9e0 | 81 | #define OPTION_PRODUCT_COBRA2 0x6600 |
14f76cc7 MU |
82 | #define HUAWEI_PRODUCT_E600 0x1001 |
83 | #define AUDIOVOX_PRODUCT_AIRCARD 0x0112 | |
84 | #define SIERRAWIRELESS_PRODUCT_MC8755 0x6802 | |
85 | #define NOVATELWIRELESS_PRODUCT_U740 0x1400 | |
31fcbb73 | 86 | #define ANYDATA_PRODUCT_ID 0x6501 |
58cfe911 | 87 | |
58cfe911 MU |
88 | static struct usb_device_id option_ids[] = { |
89 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
ba460e48 MU |
90 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, |
91 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
14f76cc7 | 92 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, |
e37de9e0 | 93 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) }, |
b6137383 MU |
94 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
95 | { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) }, | |
14f76cc7 MU |
96 | { USB_DEVICE(SIERRAWIRELESS_VENDOR_ID, SIERRAWIRELESS_PRODUCT_MC8755) }, |
97 | { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) }, | |
31fcbb73 | 98 | { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) }, |
14f76cc7 MU |
99 | { } /* Terminating entry */ |
100 | }; | |
101 | ||
102 | static struct usb_device_id option_ids1[] = { | |
103 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, | |
104 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, | |
105 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, | |
106 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, | |
e37de9e0 | 107 | { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) }, |
14f76cc7 MU |
108 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, |
109 | { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) }, | |
110 | { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) }, | |
31fcbb73 | 111 | { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) }, |
14f76cc7 MU |
112 | { } /* Terminating entry */ |
113 | }; | |
114 | static struct usb_device_id option_ids3[] = { | |
115 | { USB_DEVICE(SIERRAWIRELESS_VENDOR_ID, SIERRAWIRELESS_PRODUCT_MC8755) }, | |
58cfe911 MU |
116 | { } /* Terminating entry */ |
117 | }; | |
118 | ||
119 | MODULE_DEVICE_TABLE(usb, option_ids); | |
120 | ||
121 | static struct usb_driver option_driver = { | |
58cfe911 MU |
122 | .name = "option", |
123 | .probe = usb_serial_probe, | |
124 | .disconnect = usb_serial_disconnect, | |
125 | .id_table = option_ids, | |
ba9dc657 | 126 | .no_dynamic_id = 1, |
58cfe911 MU |
127 | }; |
128 | ||
c30fe7f7 | 129 | /* The card has three separate interfaces, which the serial driver |
58cfe911 MU |
130 | * recognizes separately, thus num_port=1. |
131 | */ | |
ea65370d | 132 | static struct usb_serial_driver option_3port_device = { |
18fcac35 GKH |
133 | .driver = { |
134 | .owner = THIS_MODULE, | |
02b2ac5b | 135 | .name = "option3", |
18fcac35 | 136 | }, |
14f76cc7 MU |
137 | .description = "GSM modem (3-port)", |
138 | .id_table = option_ids3, | |
139 | .num_interrupt_in = NUM_DONT_CARE, | |
140 | .num_bulk_in = NUM_DONT_CARE, | |
141 | .num_bulk_out = NUM_DONT_CARE, | |
142 | .num_ports = 3, | |
143 | .open = option_open, | |
144 | .close = option_close, | |
145 | .write = option_write, | |
146 | .write_room = option_write_room, | |
147 | .chars_in_buffer = option_chars_in_buffer, | |
148 | .throttle = option_rx_throttle, | |
149 | .unthrottle = option_rx_unthrottle, | |
02b2ac5b | 150 | .ioctl = option_ioctl, |
14f76cc7 MU |
151 | .set_termios = option_set_termios, |
152 | .break_ctl = option_break_ctl, | |
153 | .tiocmget = option_tiocmget, | |
154 | .tiocmset = option_tiocmset, | |
155 | .attach = option_startup, | |
156 | .shutdown = option_shutdown, | |
157 | .read_int_callback = option_instat_callback, | |
158 | }; | |
159 | ||
160 | static struct usb_serial_driver option_1port_device = { | |
161 | .driver = { | |
162 | .owner = THIS_MODULE, | |
02b2ac5b | 163 | .name = "option1", |
14f76cc7 MU |
164 | }, |
165 | .description = "GSM modem (1-port)", | |
166 | .id_table = option_ids1, | |
ba460e48 MU |
167 | .num_interrupt_in = NUM_DONT_CARE, |
168 | .num_bulk_in = NUM_DONT_CARE, | |
169 | .num_bulk_out = NUM_DONT_CARE, | |
14f76cc7 | 170 | .num_ports = 1, |
ba460e48 MU |
171 | .open = option_open, |
172 | .close = option_close, | |
173 | .write = option_write, | |
174 | .write_room = option_write_room, | |
175 | .chars_in_buffer = option_chars_in_buffer, | |
176 | .throttle = option_rx_throttle, | |
177 | .unthrottle = option_rx_unthrottle, | |
178 | .ioctl = option_ioctl, | |
179 | .set_termios = option_set_termios, | |
180 | .break_ctl = option_break_ctl, | |
181 | .tiocmget = option_tiocmget, | |
182 | .tiocmset = option_tiocmset, | |
183 | .attach = option_startup, | |
184 | .shutdown = option_shutdown, | |
185 | .read_int_callback = option_instat_callback, | |
58cfe911 MU |
186 | }; |
187 | ||
ba460e48 | 188 | #ifdef CONFIG_USB_DEBUG |
58cfe911 | 189 | static int debug; |
ba460e48 MU |
190 | #else |
191 | #define debug 0 | |
192 | #endif | |
193 | ||
58cfe911 MU |
194 | /* per port private data */ |
195 | ||
ba460e48 MU |
196 | #define N_IN_URB 4 |
197 | #define N_OUT_URB 1 | |
b27c73dc | 198 | #define IN_BUFLEN 4096 |
ba460e48 | 199 | #define OUT_BUFLEN 128 |
58cfe911 MU |
200 | |
201 | struct option_port_private { | |
202 | /* Input endpoints and buffer for this port */ | |
ba460e48 MU |
203 | struct urb *in_urbs[N_IN_URB]; |
204 | char in_buffer[N_IN_URB][IN_BUFLEN]; | |
58cfe911 | 205 | /* Output endpoints and buffer for this port */ |
ba460e48 MU |
206 | struct urb *out_urbs[N_OUT_URB]; |
207 | char out_buffer[N_OUT_URB][OUT_BUFLEN]; | |
58cfe911 MU |
208 | |
209 | /* Settings for the port */ | |
ba460e48 MU |
210 | int rts_state; /* Handshaking pins (outputs) */ |
211 | int dtr_state; | |
212 | int cts_state; /* Handshaking pins (inputs) */ | |
213 | int dsr_state; | |
214 | int dcd_state; | |
215 | int ri_state; | |
216 | ||
217 | unsigned long tx_start_time[N_OUT_URB]; | |
58cfe911 MU |
218 | }; |
219 | ||
58cfe911 | 220 | /* Functions used by new usb-serial code. */ |
7bb75aee | 221 | static int __init option_init(void) |
58cfe911 MU |
222 | { |
223 | int retval; | |
14f76cc7 MU |
224 | retval = usb_serial_register(&option_1port_device); |
225 | if (retval) | |
226 | goto failed_1port_device_register; | |
58cfe911 MU |
227 | retval = usb_serial_register(&option_3port_device); |
228 | if (retval) | |
229 | goto failed_3port_device_register; | |
230 | retval = usb_register(&option_driver); | |
231 | if (retval) | |
232 | goto failed_driver_register; | |
233 | ||
234 | info(DRIVER_DESC ": " DRIVER_VERSION); | |
235 | ||
236 | return 0; | |
237 | ||
238 | failed_driver_register: | |
239 | usb_serial_deregister (&option_3port_device); | |
240 | failed_3port_device_register: | |
14f76cc7 MU |
241 | usb_serial_deregister (&option_1port_device); |
242 | failed_1port_device_register: | |
58cfe911 MU |
243 | return retval; |
244 | } | |
245 | ||
7bb75aee | 246 | static void __exit option_exit(void) |
58cfe911 MU |
247 | { |
248 | usb_deregister (&option_driver); | |
249 | usb_serial_deregister (&option_3port_device); | |
14f76cc7 | 250 | usb_serial_deregister (&option_1port_device); |
58cfe911 MU |
251 | } |
252 | ||
253 | module_init(option_init); | |
254 | module_exit(option_exit); | |
255 | ||
7bb75aee | 256 | static void option_rx_throttle(struct usb_serial_port *port) |
58cfe911 MU |
257 | { |
258 | dbg("%s", __FUNCTION__); | |
259 | } | |
260 | ||
7bb75aee | 261 | static void option_rx_unthrottle(struct usb_serial_port *port) |
58cfe911 MU |
262 | { |
263 | dbg("%s", __FUNCTION__); | |
264 | } | |
265 | ||
7bb75aee | 266 | static void option_break_ctl(struct usb_serial_port *port, int break_state) |
58cfe911 MU |
267 | { |
268 | /* Unfortunately, I don't know how to send a break */ | |
ba460e48 | 269 | dbg("%s", __FUNCTION__); |
58cfe911 MU |
270 | } |
271 | ||
7bb75aee AM |
272 | static void option_set_termios(struct usb_serial_port *port, |
273 | struct termios *old_termios) | |
58cfe911 MU |
274 | { |
275 | dbg("%s", __FUNCTION__); | |
276 | ||
277 | option_send_setup(port); | |
278 | } | |
279 | ||
7bb75aee | 280 | static int option_tiocmget(struct usb_serial_port *port, struct file *file) |
58cfe911 | 281 | { |
ba460e48 MU |
282 | unsigned int value; |
283 | struct option_port_private *portdata; | |
58cfe911 MU |
284 | |
285 | portdata = usb_get_serial_port_data(port); | |
286 | ||
287 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
288 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
289 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
290 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
291 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
292 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
293 | ||
294 | return value; | |
295 | } | |
296 | ||
7bb75aee AM |
297 | static int option_tiocmset(struct usb_serial_port *port, struct file *file, |
298 | unsigned int set, unsigned int clear) | |
58cfe911 | 299 | { |
ba460e48 | 300 | struct option_port_private *portdata; |
58cfe911 MU |
301 | |
302 | portdata = usb_get_serial_port_data(port); | |
303 | ||
304 | if (set & TIOCM_RTS) | |
305 | portdata->rts_state = 1; | |
306 | if (set & TIOCM_DTR) | |
307 | portdata->dtr_state = 1; | |
308 | ||
309 | if (clear & TIOCM_RTS) | |
310 | portdata->rts_state = 0; | |
311 | if (clear & TIOCM_DTR) | |
312 | portdata->dtr_state = 0; | |
313 | return option_send_setup(port); | |
314 | } | |
315 | ||
7bb75aee AM |
316 | static int option_ioctl(struct usb_serial_port *port, struct file *file, |
317 | unsigned int cmd, unsigned long arg) | |
58cfe911 MU |
318 | { |
319 | return -ENOIOCTLCMD; | |
320 | } | |
321 | ||
322 | /* Write */ | |
7bb75aee AM |
323 | static int option_write(struct usb_serial_port *port, |
324 | const unsigned char *buf, int count) | |
58cfe911 | 325 | { |
ba460e48 MU |
326 | struct option_port_private *portdata; |
327 | int i; | |
328 | int left, todo; | |
329 | struct urb *this_urb = NULL; /* spurious */ | |
330 | int err; | |
58cfe911 MU |
331 | |
332 | portdata = usb_get_serial_port_data(port); | |
333 | ||
334 | dbg("%s: write (%d chars)", __FUNCTION__, count); | |
335 | ||
58cfe911 MU |
336 | i = 0; |
337 | left = count; | |
ba460e48 | 338 | for (i=0; left > 0 && i < N_OUT_URB; i++) { |
58cfe911 MU |
339 | todo = left; |
340 | if (todo > OUT_BUFLEN) | |
341 | todo = OUT_BUFLEN; | |
342 | ||
ba460e48 MU |
343 | this_urb = portdata->out_urbs[i]; |
344 | if (this_urb->status == -EINPROGRESS) { | |
7bb75aee AM |
345 | if (time_before(jiffies, |
346 | portdata->tx_start_time[i] + 10 * HZ)) | |
58cfe911 | 347 | continue; |
58cfe911 | 348 | usb_unlink_urb(this_urb); |
ba460e48 | 349 | continue; |
58cfe911 | 350 | } |
ba460e48 | 351 | if (this_urb->status != 0) |
7bb75aee AM |
352 | dbg("usb_write %p failed (err=%d)", |
353 | this_urb, this_urb->status); | |
58cfe911 | 354 | |
7bb75aee AM |
355 | dbg("%s: endpoint %d buf %d", __FUNCTION__, |
356 | usb_pipeendpoint(this_urb->pipe), i); | |
58cfe911 | 357 | |
ba460e48 | 358 | /* send the data */ |
58cfe911 | 359 | memcpy (this_urb->transfer_buffer, buf, todo); |
58cfe911 MU |
360 | this_urb->transfer_buffer_length = todo; |
361 | ||
58cfe911 MU |
362 | this_urb->dev = port->serial->dev; |
363 | err = usb_submit_urb(this_urb, GFP_ATOMIC); | |
364 | if (err) { | |
7bb75aee AM |
365 | dbg("usb_submit_urb %p (write bulk) failed " |
366 | "(%d, has %d)", this_urb, | |
367 | err, this_urb->status); | |
58cfe911 MU |
368 | continue; |
369 | } | |
370 | portdata->tx_start_time[i] = jiffies; | |
371 | buf += todo; | |
372 | left -= todo; | |
373 | } | |
374 | ||
375 | count -= left; | |
58cfe911 MU |
376 | dbg("%s: wrote (did %d)", __FUNCTION__, count); |
377 | return count; | |
378 | } | |
379 | ||
7bb75aee | 380 | static void option_indat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 | 381 | { |
33f0f88f | 382 | int err; |
58cfe911 MU |
383 | int endpoint; |
384 | struct usb_serial_port *port; | |
385 | struct tty_struct *tty; | |
386 | unsigned char *data = urb->transfer_buffer; | |
387 | ||
388 | dbg("%s: %p", __FUNCTION__, urb); | |
389 | ||
390 | endpoint = usb_pipeendpoint(urb->pipe); | |
391 | port = (struct usb_serial_port *) urb->context; | |
392 | ||
393 | if (urb->status) { | |
394 | dbg("%s: nonzero status: %d on endpoint %02x.", | |
395 | __FUNCTION__, urb->status, endpoint); | |
396 | } else { | |
397 | tty = port->tty; | |
398 | if (urb->actual_length) { | |
33f0f88f AC |
399 | tty_buffer_request_room(tty, urb->actual_length); |
400 | tty_insert_flip_string(tty, data, urb->actual_length); | |
58cfe911 MU |
401 | tty_flip_buffer_push(tty); |
402 | } else { | |
403 | dbg("%s: empty read urb received", __FUNCTION__); | |
404 | } | |
405 | ||
406 | /* Resubmit urb so we continue receiving */ | |
407 | if (port->open_count && urb->status != -ESHUTDOWN) { | |
408 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
409 | if (err) | |
7bb75aee AM |
410 | printk(KERN_ERR "%s: resubmit read urb failed. " |
411 | "(%d)", __FUNCTION__, err); | |
58cfe911 MU |
412 | } |
413 | } | |
414 | return; | |
415 | } | |
416 | ||
7bb75aee | 417 | static void option_outdat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
418 | { |
419 | struct usb_serial_port *port; | |
420 | ||
421 | dbg("%s", __FUNCTION__); | |
422 | ||
423 | port = (struct usb_serial_port *) urb->context; | |
424 | ||
cf2c7481 | 425 | usb_serial_port_softint(port); |
58cfe911 MU |
426 | } |
427 | ||
7bb75aee | 428 | static void option_instat_callback(struct urb *urb, struct pt_regs *regs) |
58cfe911 MU |
429 | { |
430 | int err; | |
431 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
432 | struct option_port_private *portdata = usb_get_serial_port_data(port); | |
433 | struct usb_serial *serial = port->serial; | |
434 | ||
435 | dbg("%s", __FUNCTION__); | |
436 | dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); | |
437 | ||
438 | if (urb->status == 0) { | |
439 | struct usb_ctrlrequest *req_pkt = | |
440 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
441 | ||
442 | if (!req_pkt) { | |
443 | dbg("%s: NULL req_pkt\n", __FUNCTION__); | |
444 | return; | |
445 | } | |
7bb75aee AM |
446 | if ((req_pkt->bRequestType == 0xA1) && |
447 | (req_pkt->bRequest == 0x20)) { | |
58cfe911 MU |
448 | int old_dcd_state; |
449 | unsigned char signals = *((unsigned char *) | |
7bb75aee AM |
450 | urb->transfer_buffer + |
451 | sizeof(struct usb_ctrlrequest)); | |
58cfe911 MU |
452 | |
453 | dbg("%s: signal x%x", __FUNCTION__, signals); | |
454 | ||
455 | old_dcd_state = portdata->dcd_state; | |
456 | portdata->cts_state = 1; | |
457 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
458 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
459 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
460 | ||
7bb75aee AM |
461 | if (port->tty && !C_CLOCAL(port->tty) && |
462 | old_dcd_state && !portdata->dcd_state) | |
58cfe911 | 463 | tty_hangup(port->tty); |
7bb75aee AM |
464 | } else { |
465 | dbg("%s: type %x req %x", __FUNCTION__, | |
466 | req_pkt->bRequestType,req_pkt->bRequest); | |
467 | } | |
58cfe911 MU |
468 | } else |
469 | dbg("%s: error %d", __FUNCTION__, urb->status); | |
470 | ||
471 | /* Resubmit urb so we continue receiving IRQ data */ | |
472 | if (urb->status != -ESHUTDOWN) { | |
473 | urb->dev = serial->dev; | |
474 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
475 | if (err) | |
7bb75aee AM |
476 | dbg("%s: resubmit intr urb failed. (%d)", |
477 | __FUNCTION__, err); | |
58cfe911 MU |
478 | } |
479 | } | |
480 | ||
7bb75aee | 481 | static int option_write_room(struct usb_serial_port *port) |
58cfe911 MU |
482 | { |
483 | struct option_port_private *portdata; | |
484 | int i; | |
485 | int data_len = 0; | |
486 | struct urb *this_urb; | |
487 | ||
488 | portdata = usb_get_serial_port_data(port); | |
489 | ||
ba460e48 | 490 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
491 | this_urb = portdata->out_urbs[i]; |
492 | if (this_urb && this_urb->status != -EINPROGRESS) | |
493 | data_len += OUT_BUFLEN; | |
ba460e48 | 494 | } |
58cfe911 MU |
495 | |
496 | dbg("%s: %d", __FUNCTION__, data_len); | |
497 | return data_len; | |
498 | } | |
499 | ||
7bb75aee | 500 | static int option_chars_in_buffer(struct usb_serial_port *port) |
58cfe911 MU |
501 | { |
502 | struct option_port_private *portdata; | |
503 | int i; | |
504 | int data_len = 0; | |
505 | struct urb *this_urb; | |
506 | ||
507 | portdata = usb_get_serial_port_data(port); | |
508 | ||
ba460e48 | 509 | for (i=0; i < N_OUT_URB; i++) { |
58cfe911 MU |
510 | this_urb = portdata->out_urbs[i]; |
511 | if (this_urb && this_urb->status == -EINPROGRESS) | |
512 | data_len += this_urb->transfer_buffer_length; | |
ba460e48 | 513 | } |
58cfe911 MU |
514 | dbg("%s: %d", __FUNCTION__, data_len); |
515 | return data_len; | |
516 | } | |
517 | ||
7bb75aee | 518 | static int option_open(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 519 | { |
ba460e48 MU |
520 | struct option_port_private *portdata; |
521 | struct usb_serial *serial = port->serial; | |
522 | int i, err; | |
523 | struct urb *urb; | |
58cfe911 MU |
524 | |
525 | portdata = usb_get_serial_port_data(port); | |
526 | ||
527 | dbg("%s", __FUNCTION__); | |
528 | ||
529 | /* Set some sane defaults */ | |
530 | portdata->rts_state = 1; | |
531 | portdata->dtr_state = 1; | |
532 | ||
533 | /* Reset low level data toggle and start reading from endpoints */ | |
534 | for (i = 0; i < N_IN_URB; i++) { | |
535 | urb = portdata->in_urbs[i]; | |
536 | if (! urb) | |
537 | continue; | |
538 | if (urb->dev != serial->dev) { | |
7bb75aee AM |
539 | dbg("%s: dev %p != %p", __FUNCTION__, |
540 | urb->dev, serial->dev); | |
58cfe911 MU |
541 | continue; |
542 | } | |
543 | ||
7bb75aee AM |
544 | /* |
545 | * make sure endpoint data toggle is synchronized with the | |
546 | * device | |
547 | */ | |
58cfe911 MU |
548 | usb_clear_halt(urb->dev, urb->pipe); |
549 | ||
550 | err = usb_submit_urb(urb, GFP_KERNEL); | |
551 | if (err) { | |
7bb75aee AM |
552 | dbg("%s: submit urb %d failed (%d) %d", |
553 | __FUNCTION__, i, err, | |
58cfe911 MU |
554 | urb->transfer_buffer_length); |
555 | } | |
556 | } | |
557 | ||
558 | /* Reset low level data toggle on out endpoints */ | |
559 | for (i = 0; i < N_OUT_URB; i++) { | |
560 | urb = portdata->out_urbs[i]; | |
561 | if (! urb) | |
562 | continue; | |
563 | urb->dev = serial->dev; | |
7bb75aee AM |
564 | /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), |
565 | usb_pipeout(urb->pipe), 0); */ | |
58cfe911 MU |
566 | } |
567 | ||
568 | port->tty->low_latency = 1; | |
569 | ||
570 | option_send_setup(port); | |
571 | ||
572 | return (0); | |
573 | } | |
574 | ||
7bb75aee | 575 | static inline void stop_urb(struct urb *urb) |
58cfe911 | 576 | { |
242cf670 | 577 | if (urb && urb->status == -EINPROGRESS) |
58cfe911 | 578 | usb_kill_urb(urb); |
58cfe911 MU |
579 | } |
580 | ||
7bb75aee | 581 | static void option_close(struct usb_serial_port *port, struct file *filp) |
58cfe911 | 582 | { |
ba460e48 MU |
583 | int i; |
584 | struct usb_serial *serial = port->serial; | |
585 | struct option_port_private *portdata; | |
58cfe911 MU |
586 | |
587 | dbg("%s", __FUNCTION__); | |
588 | portdata = usb_get_serial_port_data(port); | |
589 | ||
590 | portdata->rts_state = 0; | |
591 | portdata->dtr_state = 0; | |
592 | ||
593 | if (serial->dev) { | |
594 | option_send_setup(port); | |
595 | ||
596 | /* Stop reading/writing urbs */ | |
597 | for (i = 0; i < N_IN_URB; i++) | |
598 | stop_urb(portdata->in_urbs[i]); | |
599 | for (i = 0; i < N_OUT_URB; i++) | |
600 | stop_urb(portdata->out_urbs[i]); | |
601 | } | |
602 | port->tty = NULL; | |
603 | } | |
604 | ||
58cfe911 | 605 | /* Helper functions used by option_setup_urbs */ |
7bb75aee AM |
606 | static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, |
607 | int dir, void *ctx, char *buf, int len, | |
608 | void (*callback)(struct urb *, struct pt_regs *regs)) | |
58cfe911 MU |
609 | { |
610 | struct urb *urb; | |
611 | ||
612 | if (endpoint == -1) | |
613 | return NULL; /* endpoint not needed */ | |
614 | ||
615 | urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ | |
616 | if (urb == NULL) { | |
617 | dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); | |
618 | return NULL; | |
619 | } | |
620 | ||
621 | /* Fill URB using supplied data. */ | |
622 | usb_fill_bulk_urb(urb, serial->dev, | |
623 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
624 | buf, len, callback, ctx); | |
625 | ||
626 | return urb; | |
627 | } | |
628 | ||
629 | /* Setup urbs */ | |
7bb75aee | 630 | static void option_setup_urbs(struct usb_serial *serial) |
58cfe911 | 631 | { |
14f76cc7 | 632 | int i,j; |
ba460e48 MU |
633 | struct usb_serial_port *port; |
634 | struct option_port_private *portdata; | |
58cfe911 MU |
635 | |
636 | dbg("%s", __FUNCTION__); | |
637 | ||
14f76cc7 MU |
638 | for (i = 0; i < serial->num_ports; i++) { |
639 | port = serial->port[i]; | |
640 | portdata = usb_get_serial_port_data(port); | |
58cfe911 MU |
641 | |
642 | /* Do indat endpoints first */ | |
14f76cc7 MU |
643 | for (j = 0; j < N_IN_URB; ++j) { |
644 | portdata->in_urbs[j] = option_setup_urb (serial, | |
645 | port->bulk_in_endpointAddress, USB_DIR_IN, port, | |
646 | portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); | |
647 | } | |
58cfe911 | 648 | |
14f76cc7 MU |
649 | /* outdat endpoints */ |
650 | for (j = 0; j < N_OUT_URB; ++j) { | |
651 | portdata->out_urbs[j] = option_setup_urb (serial, | |
652 | port->bulk_out_endpointAddress, USB_DIR_OUT, port, | |
653 | portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); | |
654 | } | |
58cfe911 MU |
655 | } |
656 | } | |
657 | ||
7bb75aee | 658 | static int option_send_setup(struct usb_serial_port *port) |
58cfe911 MU |
659 | { |
660 | struct usb_serial *serial = port->serial; | |
661 | struct option_port_private *portdata; | |
662 | ||
663 | dbg("%s", __FUNCTION__); | |
664 | ||
665 | portdata = usb_get_serial_port_data(port); | |
666 | ||
667 | if (port->tty) { | |
668 | int val = 0; | |
669 | if (portdata->dtr_state) | |
670 | val |= 0x01; | |
671 | if (portdata->rts_state) | |
672 | val |= 0x02; | |
673 | ||
7bb75aee AM |
674 | return usb_control_msg(serial->dev, |
675 | usb_rcvctrlpipe(serial->dev, 0), | |
676 | 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); | |
58cfe911 MU |
677 | } |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
7bb75aee | 682 | static int option_startup(struct usb_serial *serial) |
58cfe911 | 683 | { |
ba460e48 MU |
684 | int i, err; |
685 | struct usb_serial_port *port; | |
686 | struct option_port_private *portdata; | |
58cfe911 MU |
687 | |
688 | dbg("%s", __FUNCTION__); | |
689 | ||
690 | /* Now setup per port private data */ | |
691 | for (i = 0; i < serial->num_ports; i++) { | |
692 | port = serial->port[i]; | |
80b6ca48 | 693 | portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); |
58cfe911 | 694 | if (!portdata) { |
7bb75aee AM |
695 | dbg("%s: kmalloc for option_port_private (%d) failed!.", |
696 | __FUNCTION__, i); | |
58cfe911 MU |
697 | return (1); |
698 | } | |
58cfe911 MU |
699 | |
700 | usb_set_serial_port_data(port, portdata); | |
701 | ||
702 | if (! port->interrupt_in_urb) | |
703 | continue; | |
704 | err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); | |
705 | if (err) | |
7bb75aee AM |
706 | dbg("%s: submit irq_in urb failed %d", |
707 | __FUNCTION__, err); | |
58cfe911 MU |
708 | } |
709 | ||
710 | option_setup_urbs(serial); | |
711 | ||
712 | return (0); | |
713 | } | |
714 | ||
7bb75aee | 715 | static void option_shutdown(struct usb_serial *serial) |
58cfe911 | 716 | { |
ba460e48 MU |
717 | int i, j; |
718 | struct usb_serial_port *port; | |
719 | struct option_port_private *portdata; | |
58cfe911 MU |
720 | |
721 | dbg("%s", __FUNCTION__); | |
722 | ||
723 | /* Stop reading/writing urbs */ | |
724 | for (i = 0; i < serial->num_ports; ++i) { | |
725 | port = serial->port[i]; | |
726 | portdata = usb_get_serial_port_data(port); | |
727 | for (j = 0; j < N_IN_URB; j++) | |
728 | stop_urb(portdata->in_urbs[j]); | |
729 | for (j = 0; j < N_OUT_URB; j++) | |
730 | stop_urb(portdata->out_urbs[j]); | |
731 | } | |
732 | ||
733 | /* Now free them */ | |
734 | for (i = 0; i < serial->num_ports; ++i) { | |
735 | port = serial->port[i]; | |
736 | portdata = usb_get_serial_port_data(port); | |
737 | ||
738 | for (j = 0; j < N_IN_URB; j++) { | |
739 | if (portdata->in_urbs[j]) { | |
740 | usb_free_urb(portdata->in_urbs[j]); | |
741 | portdata->in_urbs[j] = NULL; | |
742 | } | |
743 | } | |
744 | for (j = 0; j < N_OUT_URB; j++) { | |
745 | if (portdata->out_urbs[j]) { | |
746 | usb_free_urb(portdata->out_urbs[j]); | |
747 | portdata->out_urbs[j] = NULL; | |
748 | } | |
749 | } | |
750 | } | |
751 | ||
752 | /* Now free per port private data */ | |
753 | for (i = 0; i < serial->num_ports; i++) { | |
754 | port = serial->port[i]; | |
755 | kfree(usb_get_serial_port_data(port)); | |
756 | } | |
757 | } | |
758 | ||
759 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
760 | MODULE_DESCRIPTION(DRIVER_DESC); | |
761 | MODULE_VERSION(DRIVER_VERSION); | |
762 | MODULE_LICENSE("GPL"); | |
763 | ||
ba460e48 | 764 | #ifdef CONFIG_USB_DEBUG |
58cfe911 MU |
765 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
766 | MODULE_PARM_DESC(debug, "Debug messages"); | |
ba460e48 | 767 | #endif |
58cfe911 | 768 |