xref: /openbmc/linux/drivers/usb/serial/option.c (revision 50de36f7af3b1d791c402478210790c582126fe5)
1 /*
2   USB Driver for GSM modems
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: see the git log.
13 
14   Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
15 
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) 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.
29 */
30 
31 #define DRIVER_VERSION "v0.7.2"
32 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
33 #define DRIVER_DESC "USB Driver for GSM modems"
34 
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/bitops.h>
42 #include <linux/usb.h>
43 #include <linux/usb/serial.h>
44 
45 /* Function prototypes */
46 static int  option_open(struct tty_struct *tty, struct usb_serial_port *port,
47 							struct file *filp);
48 static void option_close(struct tty_struct *tty, struct usb_serial_port *port,
49 							struct file *filp);
50 static int  option_startup(struct usb_serial *serial);
51 static void option_shutdown(struct usb_serial *serial);
52 static int  option_write_room(struct tty_struct *tty);
53 
54 static void option_instat_callback(struct urb *urb);
55 
56 static int option_write(struct tty_struct *tty, struct usb_serial_port *port,
57 			const unsigned char *buf, int count);
58 static int  option_chars_in_buffer(struct tty_struct *tty);
59 static void option_set_termios(struct tty_struct *tty,
60 			struct usb_serial_port *port, struct ktermios *old);
61 static int  option_tiocmget(struct tty_struct *tty, struct file *file);
62 static int  option_tiocmset(struct tty_struct *tty, struct file *file,
63 				unsigned int set, unsigned int clear);
64 static int  option_send_setup(struct tty_struct *tty, struct usb_serial_port *port);
65 
66 /* Vendor and product IDs */
67 #define OPTION_VENDOR_ID			0x0AF0
68 #define OPTION_PRODUCT_COLT			0x5000
69 #define OPTION_PRODUCT_RICOLA			0x6000
70 #define OPTION_PRODUCT_RICOLA_LIGHT		0x6100
71 #define OPTION_PRODUCT_RICOLA_QUAD		0x6200
72 #define OPTION_PRODUCT_RICOLA_QUAD_LIGHT	0x6300
73 #define OPTION_PRODUCT_RICOLA_NDIS		0x6050
74 #define OPTION_PRODUCT_RICOLA_NDIS_LIGHT	0x6150
75 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD		0x6250
76 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT	0x6350
77 #define OPTION_PRODUCT_COBRA			0x6500
78 #define OPTION_PRODUCT_COBRA_BUS		0x6501
79 #define OPTION_PRODUCT_VIPER			0x6600
80 #define OPTION_PRODUCT_VIPER_BUS		0x6601
81 #define OPTION_PRODUCT_GT_MAX_READY		0x6701
82 #define OPTION_PRODUCT_FUJI_MODEM_LIGHT		0x6721
83 #define OPTION_PRODUCT_FUJI_MODEM_GT		0x6741
84 #define OPTION_PRODUCT_FUJI_MODEM_EX		0x6761
85 #define OPTION_PRODUCT_KOI_MODEM		0x6800
86 #define OPTION_PRODUCT_SCORPION_MODEM		0x6901
87 #define OPTION_PRODUCT_ETNA_MODEM		0x7001
88 #define OPTION_PRODUCT_ETNA_MODEM_LITE		0x7021
89 #define OPTION_PRODUCT_ETNA_MODEM_GT		0x7041
90 #define OPTION_PRODUCT_ETNA_MODEM_EX		0x7061
91 #define OPTION_PRODUCT_ETNA_KOI_MODEM		0x7100
92 
93 #define HUAWEI_VENDOR_ID			0x12D1
94 #define HUAWEI_PRODUCT_E600			0x1001
95 #define HUAWEI_PRODUCT_E220			0x1003
96 #define HUAWEI_PRODUCT_E220BIS			0x1004
97 #define HUAWEI_PRODUCT_E1401			0x1401
98 #define HUAWEI_PRODUCT_E1402			0x1402
99 #define HUAWEI_PRODUCT_E1403			0x1403
100 #define HUAWEI_PRODUCT_E1404			0x1404
101 #define HUAWEI_PRODUCT_E1405			0x1405
102 #define HUAWEI_PRODUCT_E1406			0x1406
103 #define HUAWEI_PRODUCT_E1407			0x1407
104 #define HUAWEI_PRODUCT_E1408			0x1408
105 #define HUAWEI_PRODUCT_E1409			0x1409
106 #define HUAWEI_PRODUCT_E140A			0x140A
107 #define HUAWEI_PRODUCT_E140B			0x140B
108 #define HUAWEI_PRODUCT_E140C			0x140C
109 #define HUAWEI_PRODUCT_E140D			0x140D
110 #define HUAWEI_PRODUCT_E140E			0x140E
111 #define HUAWEI_PRODUCT_E140F			0x140F
112 #define HUAWEI_PRODUCT_E1410			0x1410
113 #define HUAWEI_PRODUCT_E1411			0x1411
114 #define HUAWEI_PRODUCT_E1412			0x1412
115 #define HUAWEI_PRODUCT_E1413			0x1413
116 #define HUAWEI_PRODUCT_E1414			0x1414
117 #define HUAWEI_PRODUCT_E1415			0x1415
118 #define HUAWEI_PRODUCT_E1416			0x1416
119 #define HUAWEI_PRODUCT_E1417			0x1417
120 #define HUAWEI_PRODUCT_E1418			0x1418
121 #define HUAWEI_PRODUCT_E1419			0x1419
122 #define HUAWEI_PRODUCT_E141A			0x141A
123 #define HUAWEI_PRODUCT_E141B			0x141B
124 #define HUAWEI_PRODUCT_E141C			0x141C
125 #define HUAWEI_PRODUCT_E141D			0x141D
126 #define HUAWEI_PRODUCT_E141E			0x141E
127 #define HUAWEI_PRODUCT_E141F			0x141F
128 #define HUAWEI_PRODUCT_E1420			0x1420
129 #define HUAWEI_PRODUCT_E1421			0x1421
130 #define HUAWEI_PRODUCT_E1422			0x1422
131 #define HUAWEI_PRODUCT_E1423			0x1423
132 #define HUAWEI_PRODUCT_E1424			0x1424
133 #define HUAWEI_PRODUCT_E1425			0x1425
134 #define HUAWEI_PRODUCT_E1426			0x1426
135 #define HUAWEI_PRODUCT_E1427			0x1427
136 #define HUAWEI_PRODUCT_E1428			0x1428
137 #define HUAWEI_PRODUCT_E1429			0x1429
138 #define HUAWEI_PRODUCT_E142A			0x142A
139 #define HUAWEI_PRODUCT_E142B			0x142B
140 #define HUAWEI_PRODUCT_E142C			0x142C
141 #define HUAWEI_PRODUCT_E142D			0x142D
142 #define HUAWEI_PRODUCT_E142E			0x142E
143 #define HUAWEI_PRODUCT_E142F			0x142F
144 #define HUAWEI_PRODUCT_E1430			0x1430
145 #define HUAWEI_PRODUCT_E1431			0x1431
146 #define HUAWEI_PRODUCT_E1432			0x1432
147 #define HUAWEI_PRODUCT_E1433			0x1433
148 #define HUAWEI_PRODUCT_E1434			0x1434
149 #define HUAWEI_PRODUCT_E1435			0x1435
150 #define HUAWEI_PRODUCT_E1436			0x1436
151 #define HUAWEI_PRODUCT_E1437			0x1437
152 #define HUAWEI_PRODUCT_E1438			0x1438
153 #define HUAWEI_PRODUCT_E1439			0x1439
154 #define HUAWEI_PRODUCT_E143A			0x143A
155 #define HUAWEI_PRODUCT_E143B			0x143B
156 #define HUAWEI_PRODUCT_E143C			0x143C
157 #define HUAWEI_PRODUCT_E143D			0x143D
158 #define HUAWEI_PRODUCT_E143E			0x143E
159 #define HUAWEI_PRODUCT_E143F			0x143F
160 
161 #define NOVATELWIRELESS_VENDOR_ID		0x1410
162 
163 /* YISO PRODUCTS */
164 
165 #define YISO_VENDOR_ID				0x0EAB
166 #define YISO_PRODUCT_U893			0xC893
167 
168 /* MERLIN EVDO PRODUCTS */
169 #define NOVATELWIRELESS_PRODUCT_V640		0x1100
170 #define NOVATELWIRELESS_PRODUCT_V620		0x1110
171 #define NOVATELWIRELESS_PRODUCT_V740		0x1120
172 #define NOVATELWIRELESS_PRODUCT_V720		0x1130
173 
174 /* MERLIN HSDPA/HSPA PRODUCTS */
175 #define NOVATELWIRELESS_PRODUCT_U730		0x1400
176 #define NOVATELWIRELESS_PRODUCT_U740		0x1410
177 #define NOVATELWIRELESS_PRODUCT_U870		0x1420
178 #define NOVATELWIRELESS_PRODUCT_XU870		0x1430
179 #define NOVATELWIRELESS_PRODUCT_X950D		0x1450
180 
181 /* EXPEDITE PRODUCTS */
182 #define NOVATELWIRELESS_PRODUCT_EV620		0x2100
183 #define NOVATELWIRELESS_PRODUCT_ES720		0x2110
184 #define NOVATELWIRELESS_PRODUCT_E725		0x2120
185 #define NOVATELWIRELESS_PRODUCT_ES620		0x2130
186 #define NOVATELWIRELESS_PRODUCT_EU730		0x2400
187 #define NOVATELWIRELESS_PRODUCT_EU740		0x2410
188 #define NOVATELWIRELESS_PRODUCT_EU870D		0x2420
189 
190 /* OVATION PRODUCTS */
191 #define NOVATELWIRELESS_PRODUCT_MC727		0x4100
192 #define NOVATELWIRELESS_PRODUCT_MC950D		0x4400
193 
194 /* FUTURE NOVATEL PRODUCTS */
195 #define NOVATELWIRELESS_PRODUCT_EVDO_1		0x6000
196 #define NOVATELWIRELESS_PRODUCT_HSPA_1		0x7000
197 #define NOVATELWIRELESS_PRODUCT_EMBEDDED_1	0x8000
198 #define NOVATELWIRELESS_PRODUCT_GLOBAL_1	0x9000
199 #define NOVATELWIRELESS_PRODUCT_EVDO_2		0x6001
200 #define NOVATELWIRELESS_PRODUCT_HSPA_2		0x7001
201 #define NOVATELWIRELESS_PRODUCT_EMBEDDED_2	0x8001
202 #define NOVATELWIRELESS_PRODUCT_GLOBAL_2	0x9001
203 
204 /* AMOI PRODUCTS */
205 #define AMOI_VENDOR_ID				0x1614
206 #define AMOI_PRODUCT_H01			0x0800
207 #define AMOI_PRODUCT_H01A			0x7002
208 #define AMOI_PRODUCT_H02			0x0802
209 
210 #define DELL_VENDOR_ID				0x413C
211 
212 #define KYOCERA_VENDOR_ID			0x0c88
213 #define KYOCERA_PRODUCT_KPC650			0x17da
214 #define KYOCERA_PRODUCT_KPC680			0x180a
215 
216 #define ANYDATA_VENDOR_ID			0x16d5
217 #define ANYDATA_PRODUCT_ADU_620UW		0x6202
218 #define ANYDATA_PRODUCT_ADU_E100A		0x6501
219 #define ANYDATA_PRODUCT_ADU_500A		0x6502
220 
221 #define AXESSTEL_VENDOR_ID			0x1726
222 #define AXESSTEL_PRODUCT_MV110H			0x1000
223 
224 #define ONDA_VENDOR_ID				0x19d2
225 #define ONDA_PRODUCT_MSA501HS			0x0001
226 #define ONDA_PRODUCT_ET502HS			0x0002
227 #define ONDA_PRODUCT_MT503HS			0x0200
228 
229 #define BANDRICH_VENDOR_ID			0x1A8D
230 #define BANDRICH_PRODUCT_C100_1			0x1002
231 #define BANDRICH_PRODUCT_C100_2			0x1003
232 #define BANDRICH_PRODUCT_1004			0x1004
233 #define BANDRICH_PRODUCT_1005			0x1005
234 #define BANDRICH_PRODUCT_1006			0x1006
235 #define BANDRICH_PRODUCT_1007			0x1007
236 #define BANDRICH_PRODUCT_1008			0x1008
237 #define BANDRICH_PRODUCT_1009			0x1009
238 #define BANDRICH_PRODUCT_100A			0x100a
239 
240 #define BANDRICH_PRODUCT_100B			0x100b
241 #define BANDRICH_PRODUCT_100C			0x100c
242 #define BANDRICH_PRODUCT_100D			0x100d
243 #define BANDRICH_PRODUCT_100E			0x100e
244 
245 #define BANDRICH_PRODUCT_100F			0x100f
246 #define BANDRICH_PRODUCT_1010			0x1010
247 #define BANDRICH_PRODUCT_1011			0x1011
248 #define BANDRICH_PRODUCT_1012			0x1012
249 
250 #define AMOI_VENDOR_ID			0x1614
251 #define AMOI_PRODUCT_9508			0x0800
252 
253 #define QUALCOMM_VENDOR_ID			0x05C6
254 
255 #define MAXON_VENDOR_ID				0x16d8
256 
257 #define TELIT_VENDOR_ID				0x1bc7
258 #define TELIT_PRODUCT_UC864E			0x1003
259 
260 /* ZTE PRODUCTS */
261 #define ZTE_VENDOR_ID				0x19d2
262 #define ZTE_PRODUCT_MF628			0x0015
263 #define ZTE_PRODUCT_MF626			0x0031
264 #define ZTE_PRODUCT_CDMA_TECH			0xfffe
265 
266 /* Ericsson products */
267 #define ERICSSON_VENDOR_ID			0x0bdb
268 #define ERICSSON_PRODUCT_F3507G			0x1900
269 
270 /* Pantech products */
271 #define PANTECH_VENDOR_ID			0x106c
272 #define PANTECH_PRODUCT_PC5740			0x3701
273 #define PANTECH_PRODUCT_PC5750			0x3702  /* PX-500 */
274 #define PANTECH_PRODUCT_UM150			0x3711
275 
276 static struct usb_device_id option_ids[] = {
277 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
278 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
279 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
280 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
281 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
282 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
283 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) },
284 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) },
285 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) },
286 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
287 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) },
288 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) },
289 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) },
290 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) },
291 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) },
292 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) },
293 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) },
294 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) },
295 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) },
296 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) },
297 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) },
298 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
299 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
300 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
301 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600, 0xff, 0xff, 0xff) },
302 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220, 0xff, 0xff, 0xff) },
303 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220BIS, 0xff, 0xff, 0xff) },
304 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1401, 0xff, 0xff, 0xff) },
305 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1402, 0xff, 0xff, 0xff) },
306 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1403, 0xff, 0xff, 0xff) },
307 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1404, 0xff, 0xff, 0xff) },
308 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1405, 0xff, 0xff, 0xff) },
309 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1406, 0xff, 0xff, 0xff) },
310 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1407, 0xff, 0xff, 0xff) },
311 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1408, 0xff, 0xff, 0xff) },
312 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1409, 0xff, 0xff, 0xff) },
313 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140A, 0xff, 0xff, 0xff) },
314 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140B, 0xff, 0xff, 0xff) },
315 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140C, 0xff, 0xff, 0xff) },
316 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140D, 0xff, 0xff, 0xff) },
317 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140E, 0xff, 0xff, 0xff) },
318 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E140F, 0xff, 0xff, 0xff) },
319 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1410, 0xff, 0xff, 0xff) },
320 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1411, 0xff, 0xff, 0xff) },
321 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1412, 0xff, 0xff, 0xff) },
322 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1413, 0xff, 0xff, 0xff) },
323 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1414, 0xff, 0xff, 0xff) },
324 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1415, 0xff, 0xff, 0xff) },
325 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1416, 0xff, 0xff, 0xff) },
326 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1417, 0xff, 0xff, 0xff) },
327 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1418, 0xff, 0xff, 0xff) },
328 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1419, 0xff, 0xff, 0xff) },
329 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141A, 0xff, 0xff, 0xff) },
330 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141B, 0xff, 0xff, 0xff) },
331 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141C, 0xff, 0xff, 0xff) },
332 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141D, 0xff, 0xff, 0xff) },
333 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141E, 0xff, 0xff, 0xff) },
334 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E141F, 0xff, 0xff, 0xff) },
335 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1420, 0xff, 0xff, 0xff) },
336 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1421, 0xff, 0xff, 0xff) },
337 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1422, 0xff, 0xff, 0xff) },
338 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1423, 0xff, 0xff, 0xff) },
339 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1424, 0xff, 0xff, 0xff) },
340 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1425, 0xff, 0xff, 0xff) },
341 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1426, 0xff, 0xff, 0xff) },
342 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1427, 0xff, 0xff, 0xff) },
343 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1428, 0xff, 0xff, 0xff) },
344 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1429, 0xff, 0xff, 0xff) },
345 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142A, 0xff, 0xff, 0xff) },
346 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142B, 0xff, 0xff, 0xff) },
347 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142C, 0xff, 0xff, 0xff) },
348 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142D, 0xff, 0xff, 0xff) },
349 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142E, 0xff, 0xff, 0xff) },
350 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E142F, 0xff, 0xff, 0xff) },
351 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1430, 0xff, 0xff, 0xff) },
352 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1431, 0xff, 0xff, 0xff) },
353 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1432, 0xff, 0xff, 0xff) },
354 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1433, 0xff, 0xff, 0xff) },
355 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1434, 0xff, 0xff, 0xff) },
356 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1435, 0xff, 0xff, 0xff) },
357 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1436, 0xff, 0xff, 0xff) },
358 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1437, 0xff, 0xff, 0xff) },
359 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1438, 0xff, 0xff, 0xff) },
360 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1439, 0xff, 0xff, 0xff) },
361 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143A, 0xff, 0xff, 0xff) },
362 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143B, 0xff, 0xff, 0xff) },
363 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143C, 0xff, 0xff, 0xff) },
364 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143D, 0xff, 0xff, 0xff) },
365 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143E, 0xff, 0xff, 0xff) },
366 	{ USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143F, 0xff, 0xff, 0xff) },
367 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_9508) },
368 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V640) }, /* Novatel Merlin V640/XV620 */
369 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V620) }, /* Novatel Merlin V620/S620 */
370 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V740) }, /* Novatel Merlin EX720/V740/X720 */
371 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V720) }, /* Novatel Merlin V720/S720/PC720 */
372 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U730) }, /* Novatel U730/U740 (VF version) */
373 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U740) }, /* Novatel U740 */
374 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U870) }, /* Novatel U870 */
375 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_XU870) }, /* Novatel Merlin XU870 HSDPA/3G */
376 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_X950D) }, /* Novatel X950D */
377 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EV620) }, /* Novatel EV620/ES620 CDMA/EV-DO */
378 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_ES720) }, /* Novatel ES620/ES720/U720/USB720 */
379 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E725) }, /* Novatel E725/E726 */
380 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_ES620) }, /* Novatel Merlin ES620 SM Bus */
381 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU730) }, /* Novatel EU730 and Vodafone EU740 */
382 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU740) }, /* Novatel non-Vodafone EU740 */
383 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU870D) }, /* Novatel EU850D/EU860D/EU870D */
384 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC950D) }, /* Novatel MC930D/MC950D */
385 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC727) }, /* Novatel MC727/U727/USB727 */
386 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_1) }, /* Novatel EVDO product */
387 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_1) }, /* Novatel HSPA product */
388 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EMBEDDED_1) }, /* Novatel Embedded product */
389 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_GLOBAL_1) }, /* Novatel Global product */
390 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_2) }, /* Novatel EVDO product */
391 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_2) }, /* Novatel HSPA product */
392 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EMBEDDED_2) }, /* Novatel Embedded product */
393 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_GLOBAL_2) }, /* Novatel Global product */
394 
395 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01) },
396 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01A) },
397 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H02) },
398 
399 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8114) },	/* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite EV620 CDMA/EV-DO */
400 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8115) },	/* Dell Wireless 5500 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
401 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8116) },	/* Dell Wireless 5505 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
402 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8117) },	/* Dell Wireless 5700 Mobile Broadband CDMA/EVDO ExpressCard == Novatel Merlin XV620 CDMA/EV-DO */
403 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8118) },	/* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard == Novatel Merlin XU870 HSDPA/3G */
404 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8128) },	/* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite E720 CDMA/EV-DO */
405 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8129) },	/* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite ET620 CDMA/EV-DO */
406 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8133) }, /* Dell Wireless 5720 == Novatel EV620 CDMA/EV-DO */
407 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8136) },	/* Dell Wireless HSDPA 5520 == Novatel Expedite EU860D */
408 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8137) },	/* Dell Wireless HSDPA 5520 */
409 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8138) },	/* Dell Wireless 5520 Voda I Mobile Broadband (3G HSDPA) Minicard */
410 	{ USB_DEVICE(DELL_VENDOR_ID, 0x8147) },	/* Dell Wireless 5530 Mobile Broadband (3G HSPA) Mini-Card */
411 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) },	/* ADU-E100, ADU-310 */
412 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) },
413 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) },
414 	{ USB_DEVICE(AXESSTEL_VENDOR_ID, AXESSTEL_PRODUCT_MV110H) },
415 	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MSA501HS) },
416 	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_ET502HS) },
417 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0003) },
418 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0004) },
419 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0005) },
420 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0006) },
421 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0007) },
422 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0008) },
423 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0009) },
424 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000a) },
425 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000b) },
426 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000c) },
427 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000d) },
428 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000e) },
429 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000f) },
430 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0010) },
431 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0011) },
432 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0012) },
433 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0013) },
434 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0014) },
435 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0015) },
436 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0016) },
437 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0017) },
438 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0018) },
439 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0019) },
440 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0020) },
441 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0021) },
442 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0022) },
443 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0023) },
444 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0024) },
445 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0025) },
446 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0026) },
447 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0027) },
448 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0028) },
449 	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0029) },
450 	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MT503HS) },
451 	{ USB_DEVICE(YISO_VENDOR_ID, YISO_PRODUCT_U893) },
452 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
453 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
454 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1004) },
455 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1005) },
456 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1006) },
457 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1007) },
458 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1008) },
459 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1009) },
460 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100A) },
461 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100B) },
462 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100C) },
463 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100D) },
464 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100E) },
465 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100F) },
466 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1010) },
467 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1011) },
468 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012) },
469 	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) },
470 	{ USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
471 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */
472 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
473 	{ USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */
474 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) },
475 	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626) },
476 	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628) },
477 	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH) },
478 	{ USB_DEVICE(ERICSSON_VENDOR_ID, ERICSSON_PRODUCT_F3507G) },
479 	{ USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_PC5740) },
480 	{ USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_PC5750) },
481 	{ USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_UM150) },
482 	{ } /* Terminating entry */
483 };
484 MODULE_DEVICE_TABLE(usb, option_ids);
485 
486 static struct usb_driver option_driver = {
487 	.name       = "option",
488 	.probe      = usb_serial_probe,
489 	.disconnect = usb_serial_disconnect,
490 	.id_table   = option_ids,
491 	.no_dynamic_id = 	1,
492 };
493 
494 /* The card has three separate interfaces, which the serial driver
495  * recognizes separately, thus num_port=1.
496  */
497 
498 static struct usb_serial_driver option_1port_device = {
499 	.driver = {
500 		.owner =	THIS_MODULE,
501 		.name =		"option1",
502 	},
503 	.description       = "GSM modem (1-port)",
504 	.usb_driver        = &option_driver,
505 	.id_table          = option_ids,
506 	.num_ports         = 1,
507 	.open              = option_open,
508 	.close             = option_close,
509 	.write             = option_write,
510 	.write_room        = option_write_room,
511 	.chars_in_buffer   = option_chars_in_buffer,
512 	.set_termios       = option_set_termios,
513 	.tiocmget          = option_tiocmget,
514 	.tiocmset          = option_tiocmset,
515 	.attach            = option_startup,
516 	.shutdown          = option_shutdown,
517 	.read_int_callback = option_instat_callback,
518 };
519 
520 static int debug;
521 
522 /* per port private data */
523 
524 #define N_IN_URB 4
525 #define N_OUT_URB 1
526 #define IN_BUFLEN 4096
527 #define OUT_BUFLEN 128
528 
529 struct option_port_private {
530 	/* Input endpoints and buffer for this port */
531 	struct urb *in_urbs[N_IN_URB];
532 	u8 *in_buffer[N_IN_URB];
533 	/* Output endpoints and buffer for this port */
534 	struct urb *out_urbs[N_OUT_URB];
535 	u8 *out_buffer[N_OUT_URB];
536 	unsigned long out_busy;		/* Bit vector of URBs in use */
537 
538 	/* Settings for the port */
539 	int rts_state;	/* Handshaking pins (outputs) */
540 	int dtr_state;
541 	int cts_state;	/* Handshaking pins (inputs) */
542 	int dsr_state;
543 	int dcd_state;
544 	int ri_state;
545 
546 	unsigned long tx_start_time[N_OUT_URB];
547 };
548 
549 /* Functions used by new usb-serial code. */
550 static int __init option_init(void)
551 {
552 	int retval;
553 	retval = usb_serial_register(&option_1port_device);
554 	if (retval)
555 		goto failed_1port_device_register;
556 	retval = usb_register(&option_driver);
557 	if (retval)
558 		goto failed_driver_register;
559 
560 	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
561 	       DRIVER_DESC "\n");
562 
563 	return 0;
564 
565 failed_driver_register:
566 	usb_serial_deregister(&option_1port_device);
567 failed_1port_device_register:
568 	return retval;
569 }
570 
571 static void __exit option_exit(void)
572 {
573 	usb_deregister(&option_driver);
574 	usb_serial_deregister(&option_1port_device);
575 }
576 
577 module_init(option_init);
578 module_exit(option_exit);
579 
580 static void option_set_termios(struct tty_struct *tty,
581 		struct usb_serial_port *port, struct ktermios *old_termios)
582 {
583 	dbg("%s", __func__);
584 	/* Doesn't support option setting */
585 	tty_termios_copy_hw(tty->termios, old_termios);
586 	option_send_setup(tty, port);
587 }
588 
589 static int option_tiocmget(struct tty_struct *tty, struct file *file)
590 {
591 	struct usb_serial_port *port = tty->driver_data;
592 	unsigned int value;
593 	struct option_port_private *portdata;
594 
595 	portdata = usb_get_serial_port_data(port);
596 
597 	value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
598 		((portdata->dtr_state) ? TIOCM_DTR : 0) |
599 		((portdata->cts_state) ? TIOCM_CTS : 0) |
600 		((portdata->dsr_state) ? TIOCM_DSR : 0) |
601 		((portdata->dcd_state) ? TIOCM_CAR : 0) |
602 		((portdata->ri_state) ? TIOCM_RNG : 0);
603 
604 	return value;
605 }
606 
607 static int option_tiocmset(struct tty_struct *tty, struct file *file,
608 			unsigned int set, unsigned int clear)
609 {
610 	struct usb_serial_port *port = tty->driver_data;
611 	struct option_port_private *portdata;
612 
613 	portdata = usb_get_serial_port_data(port);
614 
615 	/* FIXME: what locks portdata fields ? */
616 	if (set & TIOCM_RTS)
617 		portdata->rts_state = 1;
618 	if (set & TIOCM_DTR)
619 		portdata->dtr_state = 1;
620 
621 	if (clear & TIOCM_RTS)
622 		portdata->rts_state = 0;
623 	if (clear & TIOCM_DTR)
624 		portdata->dtr_state = 0;
625 	return option_send_setup(tty, port);
626 }
627 
628 /* Write */
629 static int option_write(struct tty_struct *tty, struct usb_serial_port *port,
630 			const unsigned char *buf, int count)
631 {
632 	struct option_port_private *portdata;
633 	int i;
634 	int left, todo;
635 	struct urb *this_urb = NULL; /* spurious */
636 	int err;
637 
638 	portdata = usb_get_serial_port_data(port);
639 
640 	dbg("%s: write (%d chars)", __func__, count);
641 
642 	i = 0;
643 	left = count;
644 	for (i = 0; left > 0 && i < N_OUT_URB; i++) {
645 		todo = left;
646 		if (todo > OUT_BUFLEN)
647 			todo = OUT_BUFLEN;
648 
649 		this_urb = portdata->out_urbs[i];
650 		if (test_and_set_bit(i, &portdata->out_busy)) {
651 			if (time_before(jiffies,
652 					portdata->tx_start_time[i] + 10 * HZ))
653 				continue;
654 			usb_unlink_urb(this_urb);
655 			continue;
656 		}
657 		dbg("%s: endpoint %d buf %d", __func__,
658 			usb_pipeendpoint(this_urb->pipe), i);
659 
660 		/* send the data */
661 		memcpy(this_urb->transfer_buffer, buf, todo);
662 		this_urb->transfer_buffer_length = todo;
663 
664 		this_urb->dev = port->serial->dev;
665 		err = usb_submit_urb(this_urb, GFP_ATOMIC);
666 		if (err) {
667 			dbg("usb_submit_urb %p (write bulk) failed "
668 				"(%d)", this_urb, err);
669 			clear_bit(i, &portdata->out_busy);
670 			continue;
671 		}
672 		portdata->tx_start_time[i] = jiffies;
673 		buf += todo;
674 		left -= todo;
675 	}
676 
677 	count -= left;
678 	dbg("%s: wrote (did %d)", __func__, count);
679 	return count;
680 }
681 
682 static void option_indat_callback(struct urb *urb)
683 {
684 	int err;
685 	int endpoint;
686 	struct usb_serial_port *port;
687 	struct tty_struct *tty;
688 	unsigned char *data = urb->transfer_buffer;
689 	int status = urb->status;
690 
691 	dbg("%s: %p", __func__, urb);
692 
693 	endpoint = usb_pipeendpoint(urb->pipe);
694 	port =  urb->context;
695 
696 	if (status) {
697 		dbg("%s: nonzero status: %d on endpoint %02x.",
698 		    __func__, status, endpoint);
699 	} else {
700 		tty = tty_port_tty_get(&port->port);
701 		if (urb->actual_length) {
702 			tty_buffer_request_room(tty, urb->actual_length);
703 			tty_insert_flip_string(tty, data, urb->actual_length);
704 			tty_flip_buffer_push(tty);
705 		} else
706 			dbg("%s: empty read urb received", __func__);
707 		tty_kref_put(tty);
708 
709 		/* Resubmit urb so we continue receiving */
710 		if (port->port.count && status != -ESHUTDOWN) {
711 			err = usb_submit_urb(urb, GFP_ATOMIC);
712 			if (err)
713 				printk(KERN_ERR "%s: resubmit read urb failed. "
714 					"(%d)", __func__, err);
715 		}
716 	}
717 	return;
718 }
719 
720 static void option_outdat_callback(struct urb *urb)
721 {
722 	struct usb_serial_port *port;
723 	struct option_port_private *portdata;
724 	int i;
725 
726 	dbg("%s", __func__);
727 
728 	port =  urb->context;
729 
730 	usb_serial_port_softint(port);
731 
732 	portdata = usb_get_serial_port_data(port);
733 	for (i = 0; i < N_OUT_URB; ++i) {
734 		if (portdata->out_urbs[i] == urb) {
735 			smp_mb__before_clear_bit();
736 			clear_bit(i, &portdata->out_busy);
737 			break;
738 		}
739 	}
740 }
741 
742 static void option_instat_callback(struct urb *urb)
743 {
744 	int err;
745 	int status = urb->status;
746 	struct usb_serial_port *port =  urb->context;
747 	struct option_port_private *portdata = usb_get_serial_port_data(port);
748 	struct usb_serial *serial = port->serial;
749 
750 	dbg("%s", __func__);
751 	dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
752 
753 	if (status == 0) {
754 		struct usb_ctrlrequest *req_pkt =
755 				(struct usb_ctrlrequest *)urb->transfer_buffer;
756 
757 		if (!req_pkt) {
758 			dbg("%s: NULL req_pkt\n", __func__);
759 			return;
760 		}
761 		if ((req_pkt->bRequestType == 0xA1) &&
762 				(req_pkt->bRequest == 0x20)) {
763 			int old_dcd_state;
764 			unsigned char signals = *((unsigned char *)
765 					urb->transfer_buffer +
766 					sizeof(struct usb_ctrlrequest));
767 
768 			dbg("%s: signal x%x", __func__, signals);
769 
770 			old_dcd_state = portdata->dcd_state;
771 			portdata->cts_state = 1;
772 			portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
773 			portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
774 			portdata->ri_state = ((signals & 0x08) ? 1 : 0);
775 
776 			if (old_dcd_state && !portdata->dcd_state) {
777 				struct tty_struct *tty =
778 						tty_port_tty_get(&port->port);
779 				if (tty && !C_CLOCAL(tty))
780 					tty_hangup(tty);
781 				tty_kref_put(tty);
782 			}
783 		} else {
784 			dbg("%s: type %x req %x", __func__,
785 				req_pkt->bRequestType, req_pkt->bRequest);
786 		}
787 	} else
788 		dbg("%s: error %d", __func__, status);
789 
790 	/* Resubmit urb so we continue receiving IRQ data */
791 	if (status != -ESHUTDOWN) {
792 		urb->dev = serial->dev;
793 		err = usb_submit_urb(urb, GFP_ATOMIC);
794 		if (err)
795 			dbg("%s: resubmit intr urb failed. (%d)",
796 				__func__, err);
797 	}
798 }
799 
800 static int option_write_room(struct tty_struct *tty)
801 {
802 	struct usb_serial_port *port = tty->driver_data;
803 	struct option_port_private *portdata;
804 	int i;
805 	int data_len = 0;
806 	struct urb *this_urb;
807 
808 	portdata = usb_get_serial_port_data(port);
809 
810 
811 	for (i = 0; i < N_OUT_URB; i++) {
812 		this_urb = portdata->out_urbs[i];
813 		if (this_urb && !test_bit(i, &portdata->out_busy))
814 			data_len += OUT_BUFLEN;
815 	}
816 
817 	dbg("%s: %d", __func__, data_len);
818 	return data_len;
819 }
820 
821 static int option_chars_in_buffer(struct tty_struct *tty)
822 {
823 	struct usb_serial_port *port = tty->driver_data;
824 	struct option_port_private *portdata;
825 	int i;
826 	int data_len = 0;
827 	struct urb *this_urb;
828 
829 	portdata = usb_get_serial_port_data(port);
830 
831 	for (i = 0; i < N_OUT_URB; i++) {
832 		this_urb = portdata->out_urbs[i];
833 		/* FIXME: This locking is insufficient as this_urb may
834 		   go unused during the test */
835 		if (this_urb && test_bit(i, &portdata->out_busy))
836 			data_len += this_urb->transfer_buffer_length;
837 	}
838 	dbg("%s: %d", __func__, data_len);
839 	return data_len;
840 }
841 
842 static int option_open(struct tty_struct *tty,
843 			struct usb_serial_port *port, struct file *filp)
844 {
845 	struct option_port_private *portdata;
846 	struct usb_serial *serial = port->serial;
847 	int i, err;
848 	struct urb *urb;
849 
850 	portdata = usb_get_serial_port_data(port);
851 
852 	dbg("%s", __func__);
853 
854 	/* Set some sane defaults */
855 	portdata->rts_state = 1;
856 	portdata->dtr_state = 1;
857 
858 	/* Reset low level data toggle and start reading from endpoints */
859 	for (i = 0; i < N_IN_URB; i++) {
860 		urb = portdata->in_urbs[i];
861 		if (!urb)
862 			continue;
863 		if (urb->dev != serial->dev) {
864 			dbg("%s: dev %p != %p", __func__,
865 				urb->dev, serial->dev);
866 			continue;
867 		}
868 
869 		/*
870 		 * make sure endpoint data toggle is synchronized with the
871 		 * device
872 		 */
873 		usb_clear_halt(urb->dev, urb->pipe);
874 
875 		err = usb_submit_urb(urb, GFP_KERNEL);
876 		if (err) {
877 			dbg("%s: submit urb %d failed (%d) %d",
878 				__func__, i, err,
879 				urb->transfer_buffer_length);
880 		}
881 	}
882 
883 	/* Reset low level data toggle on out endpoints */
884 	for (i = 0; i < N_OUT_URB; i++) {
885 		urb = portdata->out_urbs[i];
886 		if (!urb)
887 			continue;
888 		urb->dev = serial->dev;
889 		/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
890 				usb_pipeout(urb->pipe), 0); */
891 	}
892 
893 	if (tty)
894 		tty->low_latency = 1;
895 
896 	option_send_setup(tty, port);
897 
898 	return 0;
899 }
900 
901 static void option_close(struct tty_struct *tty,
902 			struct usb_serial_port *port, struct file *filp)
903 {
904 	int i;
905 	struct usb_serial *serial = port->serial;
906 	struct option_port_private *portdata;
907 
908 	dbg("%s", __func__);
909 	portdata = usb_get_serial_port_data(port);
910 
911 	portdata->rts_state = 0;
912 	portdata->dtr_state = 0;
913 
914 	if (serial->dev) {
915 		mutex_lock(&serial->disc_mutex);
916 		if (!serial->disconnected)
917 			option_send_setup(tty, port);
918 		mutex_unlock(&serial->disc_mutex);
919 
920 		/* Stop reading/writing urbs */
921 		for (i = 0; i < N_IN_URB; i++)
922 			usb_kill_urb(portdata->in_urbs[i]);
923 		for (i = 0; i < N_OUT_URB; i++)
924 			usb_kill_urb(portdata->out_urbs[i]);
925 	}
926 	tty_port_tty_set(&port->port, NULL);
927 }
928 
929 /* Helper functions used by option_setup_urbs */
930 static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
931 		int dir, void *ctx, char *buf, int len,
932 		void (*callback)(struct urb *))
933 {
934 	struct urb *urb;
935 
936 	if (endpoint == -1)
937 		return NULL;		/* endpoint not needed */
938 
939 	urb = usb_alloc_urb(0, GFP_KERNEL);		/* No ISO */
940 	if (urb == NULL) {
941 		dbg("%s: alloc for endpoint %d failed.", __func__, endpoint);
942 		return NULL;
943 	}
944 
945 		/* Fill URB using supplied data. */
946 	usb_fill_bulk_urb(urb, serial->dev,
947 		      usb_sndbulkpipe(serial->dev, endpoint) | dir,
948 		      buf, len, callback, ctx);
949 
950 	return urb;
951 }
952 
953 /* Setup urbs */
954 static void option_setup_urbs(struct usb_serial *serial)
955 {
956 	int i, j;
957 	struct usb_serial_port *port;
958 	struct option_port_private *portdata;
959 
960 	dbg("%s", __func__);
961 
962 	for (i = 0; i < serial->num_ports; i++) {
963 		port = serial->port[i];
964 		portdata = usb_get_serial_port_data(port);
965 
966 		/* Do indat endpoints first */
967 		for (j = 0; j < N_IN_URB; ++j) {
968 			portdata->in_urbs[j] = option_setup_urb(serial,
969 					port->bulk_in_endpointAddress,
970 					USB_DIR_IN, port,
971 					portdata->in_buffer[j],
972 					IN_BUFLEN, option_indat_callback);
973 		}
974 
975 		/* outdat endpoints */
976 		for (j = 0; j < N_OUT_URB; ++j) {
977 			portdata->out_urbs[j] = option_setup_urb(serial,
978 					port->bulk_out_endpointAddress,
979 					USB_DIR_OUT, port,
980 					portdata->out_buffer[j],
981 					OUT_BUFLEN, option_outdat_callback);
982 		}
983 	}
984 }
985 
986 
987 /** send RTS/DTR state to the port.
988  *
989  * This is exactly the same as SET_CONTROL_LINE_STATE from the PSTN
990  * CDC.
991 */
992 static int option_send_setup(struct tty_struct *tty,
993 						struct usb_serial_port *port)
994 {
995 	struct usb_serial *serial = port->serial;
996 	struct option_port_private *portdata;
997 	int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
998 	dbg("%s", __func__);
999 
1000 	portdata = usb_get_serial_port_data(port);
1001 
1002 	if (tty) {
1003 		int val = 0;
1004 		if (portdata->dtr_state)
1005 			val |= 0x01;
1006 		if (portdata->rts_state)
1007 			val |= 0x02;
1008 
1009 		return usb_control_msg(serial->dev,
1010 			usb_rcvctrlpipe(serial->dev, 0),
1011 			0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT);
1012 	}
1013 	return 0;
1014 }
1015 
1016 static int option_startup(struct usb_serial *serial)
1017 {
1018 	int i, j, err;
1019 	struct usb_serial_port *port;
1020 	struct option_port_private *portdata;
1021 	u8 *buffer;
1022 
1023 	dbg("%s", __func__);
1024 
1025 	/* Now setup per port private data */
1026 	for (i = 0; i < serial->num_ports; i++) {
1027 		port = serial->port[i];
1028 		portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
1029 		if (!portdata) {
1030 			dbg("%s: kmalloc for option_port_private (%d) failed!.",
1031 					__func__, i);
1032 			return 1;
1033 		}
1034 
1035 		for (j = 0; j < N_IN_URB; j++) {
1036 			buffer = (u8 *)__get_free_page(GFP_KERNEL);
1037 			if (!buffer)
1038 				goto bail_out_error;
1039 			portdata->in_buffer[j] = buffer;
1040 		}
1041 
1042 		for (j = 0; j < N_OUT_URB; j++) {
1043 			buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL);
1044 			if (!buffer)
1045 				goto bail_out_error2;
1046 			portdata->out_buffer[j] = buffer;
1047 		}
1048 
1049 		usb_set_serial_port_data(port, portdata);
1050 
1051 		if (!port->interrupt_in_urb)
1052 			continue;
1053 		err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
1054 		if (err)
1055 			dbg("%s: submit irq_in urb failed %d",
1056 				__func__, err);
1057 	}
1058 	option_setup_urbs(serial);
1059 	return 0;
1060 
1061 bail_out_error2:
1062 	for (j = 0; j < N_OUT_URB; j++)
1063 		kfree(portdata->out_buffer[j]);
1064 bail_out_error:
1065 	for (j = 0; j < N_IN_URB; j++)
1066 		if (portdata->in_buffer[j])
1067 			free_page((unsigned long)portdata->in_buffer[j]);
1068 	kfree(portdata);
1069 	return 1;
1070 }
1071 
1072 static void option_shutdown(struct usb_serial *serial)
1073 {
1074 	int i, j;
1075 	struct usb_serial_port *port;
1076 	struct option_port_private *portdata;
1077 
1078 	dbg("%s", __func__);
1079 
1080 	/* Stop reading/writing urbs */
1081 	for (i = 0; i < serial->num_ports; ++i) {
1082 		port = serial->port[i];
1083 		portdata = usb_get_serial_port_data(port);
1084 		for (j = 0; j < N_IN_URB; j++)
1085 			usb_kill_urb(portdata->in_urbs[j]);
1086 		for (j = 0; j < N_OUT_URB; j++)
1087 			usb_kill_urb(portdata->out_urbs[j]);
1088 	}
1089 
1090 	/* Now free them */
1091 	for (i = 0; i < serial->num_ports; ++i) {
1092 		port = serial->port[i];
1093 		portdata = usb_get_serial_port_data(port);
1094 
1095 		for (j = 0; j < N_IN_URB; j++) {
1096 			if (portdata->in_urbs[j]) {
1097 				usb_free_urb(portdata->in_urbs[j]);
1098 				free_page((unsigned long)
1099 					portdata->in_buffer[j]);
1100 				portdata->in_urbs[j] = NULL;
1101 			}
1102 		}
1103 		for (j = 0; j < N_OUT_URB; j++) {
1104 			if (portdata->out_urbs[j]) {
1105 				usb_free_urb(portdata->out_urbs[j]);
1106 				kfree(portdata->out_buffer[j]);
1107 				portdata->out_urbs[j] = NULL;
1108 			}
1109 		}
1110 	}
1111 
1112 	/* Now free per port private data */
1113 	for (i = 0; i < serial->num_ports; i++) {
1114 		port = serial->port[i];
1115 		kfree(usb_get_serial_port_data(port));
1116 	}
1117 }
1118 
1119 MODULE_AUTHOR(DRIVER_AUTHOR);
1120 MODULE_DESCRIPTION(DRIVER_DESC);
1121 MODULE_VERSION(DRIVER_VERSION);
1122 MODULE_LICENSE("GPL");
1123 
1124 module_param(debug, bool, S_IRUGO | S_IWUSR);
1125 MODULE_PARM_DESC(debug, "Debug messages");
1126