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usb-storage: update earlier scatter-gather bug fix
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / option.c
CommitLineData
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>
59c2afa0 41#include <linux/bitops.h>
58cfe911 42#include <linux/usb.h>
a969888c 43#include <linux/usb/serial.h>
58cfe911
MU		 44
45/* Function prototypes */
7bb75aee
AM		 46static int option_open(struct usb_serial_port *port, struct file *filp);
47static void option_close(struct usb_serial_port *port, struct file *filp);
48static int option_startup(struct usb_serial *serial);
49static void option_shutdown(struct usb_serial *serial);
50static void option_rx_throttle(struct usb_serial_port *port);
51static void option_rx_unthrottle(struct usb_serial_port *port);
52static int option_write_room(struct usb_serial_port *port);
58cfe911 53
7d12e780 54static void option_instat_callback(struct urb *urb);
58cfe911 55
7bb75aee
AM		 56static int option_write(struct usb_serial_port *port,
57 const unsigned char *buf, int count);
58cfe911 58
7bb75aee
AM		 59static int option_chars_in_buffer(struct usb_serial_port *port);
60static int option_ioctl(struct usb_serial_port *port, struct file *file,
61 unsigned int cmd, unsigned long arg);
62static void option_set_termios(struct usb_serial_port *port,
606d099c 63 struct ktermios *old);
7bb75aee
AM		 64static void option_break_ctl(struct usb_serial_port *port, int break_state);
65static int option_tiocmget(struct usb_serial_port *port, struct file *file);
66static int option_tiocmset(struct usb_serial_port *port, struct file *file,
67 unsigned int set, unsigned int clear);
68static int option_send_setup(struct usb_serial_port *port);
58cfe911
MU		 69
70/* Vendor and product IDs */
fd978bfa
GKH		 71#define OPTION_VENDOR_ID 0x0AF0
72#define OPTION_PRODUCT_COLT 0x5000
73#define OPTION_PRODUCT_RICOLA 0x6000
74#define OPTION_PRODUCT_RICOLA_LIGHT 0x6100
75#define OPTION_PRODUCT_RICOLA_QUAD 0x6200
76#define OPTION_PRODUCT_RICOLA_QUAD_LIGHT 0x6300
77#define OPTION_PRODUCT_RICOLA_NDIS 0x6050
78#define OPTION_PRODUCT_RICOLA_NDIS_LIGHT 0x6150
79#define OPTION_PRODUCT_RICOLA_NDIS_QUAD 0x6250
80#define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT 0x6350
81#define OPTION_PRODUCT_COBRA 0x6500
82#define OPTION_PRODUCT_COBRA_BUS 0x6501
83#define OPTION_PRODUCT_VIPER 0x6600
84#define OPTION_PRODUCT_VIPER_BUS 0x6601
85#define OPTION_PRODUCT_GT_MAX_READY 0x6701
86#define OPTION_PRODUCT_GT_MAX 0x6711
87#define OPTION_PRODUCT_FUJI_MODEM_LIGHT 0x6721
88#define OPTION_PRODUCT_FUJI_MODEM_GT 0x6741
89#define OPTION_PRODUCT_FUJI_MODEM_EX 0x6761
90#define OPTION_PRODUCT_FUJI_NETWORK_LIGHT 0x6731
91#define OPTION_PRODUCT_FUJI_NETWORK_GT 0x6751
92#define OPTION_PRODUCT_FUJI_NETWORK_EX 0x6771
93#define OPTION_PRODUCT_KOI_MODEM 0x6800
94#define OPTION_PRODUCT_KOI_NETWORK 0x6811
95#define OPTION_PRODUCT_SCORPION_MODEM 0x6901
96#define OPTION_PRODUCT_SCORPION_NETWORK 0x6911
97#define OPTION_PRODUCT_ETNA_MODEM 0x7001
98#define OPTION_PRODUCT_ETNA_NETWORK 0x7011
99#define OPTION_PRODUCT_ETNA_MODEM_LITE 0x7021
100#define OPTION_PRODUCT_ETNA_MODEM_GT 0x7041
101#define OPTION_PRODUCT_ETNA_MODEM_EX 0x7061
102#define OPTION_PRODUCT_ETNA_NETWORK_LITE 0x7031
103#define OPTION_PRODUCT_ETNA_NETWORK_GT 0x7051
104#define OPTION_PRODUCT_ETNA_NETWORK_EX 0x7071
105#define OPTION_PRODUCT_ETNA_KOI_MODEM 0x7100
106#define OPTION_PRODUCT_ETNA_KOI_NETWORK 0x7111
107
108#define HUAWEI_VENDOR_ID 0x12D1
109#define HUAWEI_PRODUCT_E600 0x1001
110#define HUAWEI_PRODUCT_E220 0x1003
a3209a0e 111#define HUAWEI_PRODUCT_E220BIS 0x1004
fd978bfa
GKH		 112
113#define NOVATELWIRELESS_VENDOR_ID 0x1410
96443218 114#define DELL_VENDOR_ID 0x413C
fd978bfa 115
564d61d3
DW		 116#define KYOCERA_VENDOR_ID 0x0c88
117#define KYOCERA_PRODUCT_KPC680 0x180a
118
fd978bfa 119#define ANYDATA_VENDOR_ID 0x16d5
46269db9
AG		 120#define ANYDATA_PRODUCT_ADU_E100A 0x6501
121#define ANYDATA_PRODUCT_ADU_500A 0x6502
58cfe911 122
3f6e5846
LL		 123#define BANDRICH_VENDOR_ID 0x1A8D
124#define BANDRICH_PRODUCT_C100_1 0x1002
125#define BANDRICH_PRODUCT_C100_2 0x1003
126
d726fb75
KL		 127#define QUALCOMM_VENDOR_ID 0x05C6
128
58cfe911 129static struct usb_device_id option_ids[] = {
fd978bfa
GKH		 130 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
131 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
132 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
133 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
134 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
135 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
136 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) },
137 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) },
138 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) },
14f76cc7 139 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
fd978bfa
GKH		 140 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) },
141 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) },
142 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) },
143 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) },
144 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX) },
145 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) },
146 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) },
147 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) },
148 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_LIGHT) },
149 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_GT) },
150 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_EX) },
151 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) },
152 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_NETWORK) },
153 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) },
154 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_NETWORK) },
155 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) },
156 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK) },
157 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) },
158 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
159 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
160 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_LITE) },
161 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_GT) },
162 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_EX) },
163 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
164 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_NETWORK) },
b6137383 165 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
b5ce18af
JVJ		 166 { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220, 0xff, 0xff, 0xff) },
167 { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220BIS, 0xff, 0xff, 0xff) },
69806d56
GKH		 168 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1100) }, /* Novatel Merlin XS620/S640 */
169 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1110) }, /* Novatel Merlin S620 */
170 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1120) }, /* Novatel Merlin EX720 */
171 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1130) }, /* Novatel Merlin S720 */
172 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1400) }, /* Novatel U730 */
173 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1410) }, /* Novatel U740 */
174 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1420) }, /* Novatel EU870 */
175 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1430) }, /* Novatel Merlin XU870 HSDPA/3G */
69806d56
GKH		 176 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2100) }, /* Novatel EV620 CDMA/EV-DO */
177 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2110) }, /* Novatel Merlin ES620 / Merlin ES720 / Ovation U720 */
178 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2130) }, /* Novatel Merlin ES620 SM Bus */
179 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2410) }, /* Novatel EU740 */
3657f6c0
GKH		 180 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x4100) }, /* Novatel U727 */
181 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x4400) }, /* Novatel MC950 */
7f4a9e87 182 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x5010) }, /* Novatel U727 */
96443218
FL		 183 { USB_DEVICE(DELL_VENDOR_ID, 0x8114) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite EV620 CDMA/EV-DO */
184 { USB_DEVICE(DELL_VENDOR_ID, 0x8115) }, /* Dell Wireless 5500 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
185 { USB_DEVICE(DELL_VENDOR_ID, 0x8116) }, /* Dell Wireless 5505 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
186 { USB_DEVICE(DELL_VENDOR_ID, 0x8117) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO ExpressCard == Novatel Merlin XV620 CDMA/EV-DO */
187 { USB_DEVICE(DELL_VENDOR_ID, 0x8118) }, /* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard == Novatel Merlin XU870 HSDPA/3G */
188 { USB_DEVICE(DELL_VENDOR_ID, 0x8128) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite E720 CDMA/EV-DO */
59036e94 189 { USB_DEVICE(DELL_VENDOR_ID, 0x8129) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite ET620 CDMA/EV-DO */
aa59e053
SB		 190 { USB_DEVICE(DELL_VENDOR_ID, 0x8133) }, /* Dell Wireless 5720 == Novatel EV620 CDMA/EV-DO */
191 { USB_DEVICE(DELL_VENDOR_ID, 0x8136) }, /* Dell Wireless HSDPA 5520 == Novatel Expedite EU860D */
2c4cd1f1 192 { USB_DEVICE(DELL_VENDOR_ID, 0x8137) }, /* Dell Wireless HSDPA 5520 */
46269db9
AG		 193 { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) },
194 { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) },
3f6e5846
LL		 195 { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
196 { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
564d61d3 197 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
d726fb75 198 { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
14f76cc7
MU		 199 { } /* Terminating entry */
200};
58cfe911
MU		 201MODULE_DEVICE_TABLE(usb, option_ids);
202
203static struct usb_driver option_driver = {
58cfe911
MU		 204 .name = "option",
205 .probe = usb_serial_probe,
206 .disconnect = usb_serial_disconnect,
207 .id_table = option_ids,
ba9dc657 208 .no_dynamic_id = 1,
58cfe911
MU		 209};
210
c30fe7f7 211/* The card has three separate interfaces, which the serial driver
58cfe911
MU		 212 * recognizes separately, thus num_port=1.
213 */
14f76cc7
MU		 214
215static struct usb_serial_driver option_1port_device = {
216 .driver = {
217 .owner = THIS_MODULE,
02b2ac5b 218 .name = "option1",
14f76cc7
MU		 219 },
220 .description = "GSM modem (1-port)",
d9b1b787 221 .usb_driver = &option_driver,
b656b2cb 222 .id_table = option_ids,
ba460e48
MU		 223 .num_interrupt_in = NUM_DONT_CARE,
224 .num_bulk_in = NUM_DONT_CARE,
225 .num_bulk_out = NUM_DONT_CARE,
14f76cc7 226 .num_ports = 1,
ba460e48
MU		 227 .open = option_open,
228 .close = option_close,
229 .write = option_write,
230 .write_room = option_write_room,
231 .chars_in_buffer = option_chars_in_buffer,
232 .throttle = option_rx_throttle,
233 .unthrottle = option_rx_unthrottle,
234 .ioctl = option_ioctl,
235 .set_termios = option_set_termios,
236 .break_ctl = option_break_ctl,
237 .tiocmget = option_tiocmget,
238 .tiocmset = option_tiocmset,
239 .attach = option_startup,
240 .shutdown = option_shutdown,
241 .read_int_callback = option_instat_callback,
58cfe911
MU		 242};
243
ba460e48 244#ifdef CONFIG_USB_DEBUG
58cfe911 245static int debug;
ba460e48
MU		 246#else
247#define debug 0
248#endif
249
58cfe911
MU		 250/* per port private data */
251
ba460e48
MU		 252#define N_IN_URB 4
253#define N_OUT_URB 1
b27c73dc 254#define IN_BUFLEN 4096
ba460e48 255#define OUT_BUFLEN 128
58cfe911
MU		 256
257struct option_port_private {
258 /* Input endpoints and buffer for this port */
ba460e48 259 struct urb *in_urbs[N_IN_URB];
2129c4e1 260 u8 *in_buffer[N_IN_URB];
58cfe911 261 /* Output endpoints and buffer for this port */
ba460e48 262 struct urb *out_urbs[N_OUT_URB];
2129c4e1 263 u8 *out_buffer[N_OUT_URB];
59c2afa0 264 unsigned long out_busy; /* Bit vector of URBs in use */
58cfe911
MU		 265
266 /* Settings for the port */
ba460e48
MU		 267 int rts_state; /* Handshaking pins (outputs) */
268 int dtr_state;
269 int cts_state; /* Handshaking pins (inputs) */
270 int dsr_state;
271 int dcd_state;
272 int ri_state;
273
274 unsigned long tx_start_time[N_OUT_URB];
58cfe911
MU		 275};
276
58cfe911 277/* Functions used by new usb-serial code. */
7bb75aee 278static int __init option_init(void)
58cfe911
MU		 279{
280 int retval;
14f76cc7
MU		 281 retval = usb_serial_register(&option_1port_device);
282 if (retval)
283 goto failed_1port_device_register;
58cfe911
MU		 284 retval = usb_register(&option_driver);
285 if (retval)
286 goto failed_driver_register;
287
288 info(DRIVER_DESC ": " DRIVER_VERSION);
289
290 return 0;
291
292failed_driver_register:
14f76cc7
MU		 293 usb_serial_deregister (&option_1port_device);
294failed_1port_device_register:
58cfe911
MU		 295 return retval;
296}
297
7bb75aee 298static void __exit option_exit(void)
58cfe911
MU		 299{
300 usb_deregister (&option_driver);
14f76cc7 301 usb_serial_deregister (&option_1port_device);
58cfe911
MU		 302}
303
304module_init(option_init);
305module_exit(option_exit);
306
7bb75aee 307static void option_rx_throttle(struct usb_serial_port *port)
58cfe911
MU		 308{
309 dbg("%s", __FUNCTION__);
310}
311
7bb75aee 312static void option_rx_unthrottle(struct usb_serial_port *port)
58cfe911
MU		 313{
314 dbg("%s", __FUNCTION__);
315}
316
7bb75aee 317static void option_break_ctl(struct usb_serial_port *port, int break_state)
58cfe911
MU		 318{
319 /* Unfortunately, I don't know how to send a break */
ba460e48 320 dbg("%s", __FUNCTION__);
58cfe911
MU		 321}
322
7bb75aee 323static void option_set_termios(struct usb_serial_port *port,
606d099c 324 struct ktermios *old_termios)
58cfe911
MU		 325{
326 dbg("%s", __FUNCTION__);
e650d8ae
AC		 327 /* Doesn't support option setting */
328 tty_termios_copy_hw(port->tty->termios, old_termios);
58cfe911
MU		 329 option_send_setup(port);
330}
331
7bb75aee 332static int option_tiocmget(struct usb_serial_port *port, struct file *file)
58cfe911 333{
ba460e48
MU		 334 unsigned int value;
335 struct option_port_private *portdata;
58cfe911
MU		 336
337 portdata = usb_get_serial_port_data(port);
338
339 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
340 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
341 ((portdata->cts_state) ? TIOCM_CTS : 0) |
342 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
343 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
344 ((portdata->ri_state) ? TIOCM_RNG : 0);
345
346 return value;
347}
348
7bb75aee
AM		 349static int option_tiocmset(struct usb_serial_port *port, struct file *file,
350 unsigned int set, unsigned int clear)
58cfe911 351{
ba460e48 352 struct option_port_private *portdata;
58cfe911
MU		 353
354 portdata = usb_get_serial_port_data(port);
355
356 if (set & TIOCM_RTS)
357 portdata->rts_state = 1;
358 if (set & TIOCM_DTR)
359 portdata->dtr_state = 1;
360
361 if (clear & TIOCM_RTS)
362 portdata->rts_state = 0;
363 if (clear & TIOCM_DTR)
364 portdata->dtr_state = 0;
365 return option_send_setup(port);
366}
367
7bb75aee
AM		 368static int option_ioctl(struct usb_serial_port *port, struct file *file,
369 unsigned int cmd, unsigned long arg)
58cfe911
MU		 370{
371 return -ENOIOCTLCMD;
372}
373
374/* Write */
7bb75aee
AM		 375static int option_write(struct usb_serial_port *port,
376 const unsigned char *buf, int count)
58cfe911 377{
ba460e48
MU		 378 struct option_port_private *portdata;
379 int i;
380 int left, todo;
381 struct urb *this_urb = NULL; /* spurious */
382 int err;
58cfe911
MU		 383
384 portdata = usb_get_serial_port_data(port);
385
386 dbg("%s: write (%d chars)", __FUNCTION__, count);
387
58cfe911
MU		 388 i = 0;
389 left = count;
ba460e48 390 for (i=0; left > 0 && i < N_OUT_URB; i++) {
58cfe911
MU		 391 todo = left;
392 if (todo > OUT_BUFLEN)
393 todo = OUT_BUFLEN;
394
ba460e48 395 this_urb = portdata->out_urbs[i];
59c2afa0 396 if (test_and_set_bit(i, &portdata->out_busy)) {
7bb75aee
AM		 397 if (time_before(jiffies,
398 portdata->tx_start_time[i] + 10 * HZ))
58cfe911 399 continue;
58cfe911 400 usb_unlink_urb(this_urb);
ba460e48 401 continue;
58cfe911 402 }
ba460e48 403 if (this_urb->status != 0)
7bb75aee
AM		 404 dbg("usb_write %p failed (err=%d)",
405 this_urb, this_urb->status);
58cfe911 406
7bb75aee
AM		 407 dbg("%s: endpoint %d buf %d", __FUNCTION__,
408 usb_pipeendpoint(this_urb->pipe), i);
58cfe911 409
ba460e48 410 /* send the data */
58cfe911 411 memcpy (this_urb->transfer_buffer, buf, todo);
58cfe911
MU		 412 this_urb->transfer_buffer_length = todo;
413
58cfe911
MU		 414 this_urb->dev = port->serial->dev;
415 err = usb_submit_urb(this_urb, GFP_ATOMIC);
416 if (err) {
7bb75aee
AM		 417 dbg("usb_submit_urb %p (write bulk) failed "
418 "(%d, has %d)", this_urb,
419 err, this_urb->status);
59c2afa0 420 clear_bit(i, &portdata->out_busy);
58cfe911
MU		 421 continue;
422 }
423 portdata->tx_start_time[i] = jiffies;
424 buf += todo;
425 left -= todo;
426 }
427
428 count -= left;
58cfe911
MU		 429 dbg("%s: wrote (did %d)", __FUNCTION__, count);
430 return count;
431}
432
7d12e780 433static void option_indat_callback(struct urb *urb)
58cfe911 434{
33f0f88f 435 int err;
58cfe911
MU		 436 int endpoint;
437 struct usb_serial_port *port;
438 struct tty_struct *tty;
439 unsigned char *data = urb->transfer_buffer;
d6977b51 440 int status = urb->status;
58cfe911
MU		 441
442 dbg("%s: %p", __FUNCTION__, urb);
443
444 endpoint = usb_pipeendpoint(urb->pipe);
445 port = (struct usb_serial_port *) urb->context;
446
d6977b51 447 if (status) {
58cfe911 448 dbg("%s: nonzero status: %d on endpoint %02x.",
d6977b51 449 __FUNCTION__, status, endpoint);
58cfe911
MU		 450 } else {
451 tty = port->tty;
452 if (urb->actual_length) {
33f0f88f
AC		 453 tty_buffer_request_room(tty, urb->actual_length);
454 tty_insert_flip_string(tty, data, urb->actual_length);
58cfe911
MU		 455 tty_flip_buffer_push(tty);
456 } else {
457 dbg("%s: empty read urb received", __FUNCTION__);
458 }
459
460 /* Resubmit urb so we continue receiving */
d6977b51 461 if (port->open_count && status != -ESHUTDOWN) {
58cfe911
MU		 462 err = usb_submit_urb(urb, GFP_ATOMIC);
463 if (err)
7bb75aee
AM		 464 printk(KERN_ERR "%s: resubmit read urb failed. "
465 "(%d)", __FUNCTION__, err);
58cfe911
MU		 466 }
467 }
468 return;
469}
470
7d12e780 471static void option_outdat_callback(struct urb *urb)
58cfe911
MU		 472{
473 struct usb_serial_port *port;
59c2afa0
AS		 474 struct option_port_private *portdata;
475 int i;
58cfe911
MU		 476
477 dbg("%s", __FUNCTION__);
478
479 port = (struct usb_serial_port *) urb->context;
480
cf2c7481 481 usb_serial_port_softint(port);
59c2afa0
AS		 482
483 portdata = usb_get_serial_port_data(port);
484 for (i = 0; i < N_OUT_URB; ++i) {
485 if (portdata->out_urbs[i] == urb) {
486 smp_mb__before_clear_bit();
487 clear_bit(i, &portdata->out_busy);
488 break;
489 }
490 }
58cfe911
MU		 491}
492
7d12e780 493static void option_instat_callback(struct urb *urb)
58cfe911
MU		 494{
495 int err;
d6977b51 496 int status = urb->status;
58cfe911
MU		 497 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
498 struct option_port_private *portdata = usb_get_serial_port_data(port);
499 struct usb_serial *serial = port->serial;
500
501 dbg("%s", __FUNCTION__);
502 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
503
d6977b51 504 if (status == 0) {
58cfe911
MU		 505 struct usb_ctrlrequest *req_pkt =
506 (struct usb_ctrlrequest *)urb->transfer_buffer;
507
508 if (!req_pkt) {
509 dbg("%s: NULL req_pkt\n", __FUNCTION__);
510 return;
511 }
7bb75aee
AM		 512 if ((req_pkt->bRequestType == 0xA1) &&
513 (req_pkt->bRequest == 0x20)) {
58cfe911
MU		 514 int old_dcd_state;
515 unsigned char signals = *((unsigned char *)
7bb75aee
AM		 516 urb->transfer_buffer +
517 sizeof(struct usb_ctrlrequest));
58cfe911
MU		 518
519 dbg("%s: signal x%x", __FUNCTION__, signals);
520
521 old_dcd_state = portdata->dcd_state;
522 portdata->cts_state = 1;
523 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
524 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
525 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
526
7bb75aee
AM		 527 if (port->tty && !C_CLOCAL(port->tty) &&
528 old_dcd_state && !portdata->dcd_state)
58cfe911 529 tty_hangup(port->tty);
7bb75aee
AM		 530 } else {
531 dbg("%s: type %x req %x", __FUNCTION__,
532 req_pkt->bRequestType,req_pkt->bRequest);
533 }
58cfe911 534 } else
d6977b51 535 dbg("%s: error %d", __FUNCTION__, status);
58cfe911
MU		 536
537 /* Resubmit urb so we continue receiving IRQ data */
d6977b51 538 if (status != -ESHUTDOWN) {
58cfe911
MU		 539 urb->dev = serial->dev;
540 err = usb_submit_urb(urb, GFP_ATOMIC);
541 if (err)
7bb75aee
AM		 542 dbg("%s: resubmit intr urb failed. (%d)",
543 __FUNCTION__, err);
58cfe911
MU		 544 }
545}
546
7bb75aee 547static int option_write_room(struct usb_serial_port *port)
58cfe911
MU		 548{
549 struct option_port_private *portdata;
550 int i;
551 int data_len = 0;
552 struct urb *this_urb;
553
554 portdata = usb_get_serial_port_data(port);
555
ba460e48 556 for (i=0; i < N_OUT_URB; i++) {
58cfe911 557 this_urb = portdata->out_urbs[i];
59c2afa0 558 if (this_urb && !test_bit(i, &portdata->out_busy))
58cfe911 559 data_len += OUT_BUFLEN;
ba460e48 560 }
58cfe911
MU		 561
562 dbg("%s: %d", __FUNCTION__, data_len);
563 return data_len;
564}
565
7bb75aee 566static int option_chars_in_buffer(struct usb_serial_port *port)
58cfe911
MU		 567{
568 struct option_port_private *portdata;
569 int i;
570 int data_len = 0;
571 struct urb *this_urb;
572
573 portdata = usb_get_serial_port_data(port);
574
ba460e48 575 for (i=0; i < N_OUT_URB; i++) {
58cfe911 576 this_urb = portdata->out_urbs[i];
59c2afa0 577 if (this_urb && test_bit(i, &portdata->out_busy))
58cfe911 578 data_len += this_urb->transfer_buffer_length;
ba460e48 579 }
58cfe911
MU		 580 dbg("%s: %d", __FUNCTION__, data_len);
581 return data_len;
582}
583
7bb75aee 584static int option_open(struct usb_serial_port *port, struct file *filp)
58cfe911 585{
ba460e48
MU		 586 struct option_port_private *portdata;
587 struct usb_serial *serial = port->serial;
588 int i, err;
589 struct urb *urb;
58cfe911
MU		 590
591 portdata = usb_get_serial_port_data(port);
592
593 dbg("%s", __FUNCTION__);
594
595 /* Set some sane defaults */
596 portdata->rts_state = 1;
597 portdata->dtr_state = 1;
598
599 /* Reset low level data toggle and start reading from endpoints */
600 for (i = 0; i < N_IN_URB; i++) {
601 urb = portdata->in_urbs[i];
602 if (! urb)
603 continue;
604 if (urb->dev != serial->dev) {
7bb75aee
AM		 605 dbg("%s: dev %p != %p", __FUNCTION__,
606 urb->dev, serial->dev);
58cfe911
MU		 607 continue;
608 }
609
7bb75aee
AM		 610 /*
611 * make sure endpoint data toggle is synchronized with the
612 * device
613 */
58cfe911
MU		 614 usb_clear_halt(urb->dev, urb->pipe);
615
616 err = usb_submit_urb(urb, GFP_KERNEL);
617 if (err) {
7bb75aee
AM		 618 dbg("%s: submit urb %d failed (%d) %d",
619 __FUNCTION__, i, err,
58cfe911
MU		 620 urb->transfer_buffer_length);
621 }
622 }
623
624 /* Reset low level data toggle on out endpoints */
625 for (i = 0; i < N_OUT_URB; i++) {
626 urb = portdata->out_urbs[i];
627 if (! urb)
628 continue;
629 urb->dev = serial->dev;
7bb75aee
AM		 630 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
631 usb_pipeout(urb->pipe), 0); */
58cfe911
MU		 632 }
633
634 port->tty->low_latency = 1;
635
636 option_send_setup(port);
637
638 return (0);
639}
640
7bb75aee 641static void option_close(struct usb_serial_port *port, struct file *filp)
58cfe911 642{
ba460e48
MU		 643 int i;
644 struct usb_serial *serial = port->serial;
645 struct option_port_private *portdata;
58cfe911
MU		 646
647 dbg("%s", __FUNCTION__);
648 portdata = usb_get_serial_port_data(port);
649
650 portdata->rts_state = 0;
651 portdata->dtr_state = 0;
652
653 if (serial->dev) {
e33fe4d8
ON		 654 mutex_lock(&serial->disc_mutex);
655 if (!serial->disconnected)
656 option_send_setup(port);
657 mutex_unlock(&serial->disc_mutex);
58cfe911
MU		 658
659 /* Stop reading/writing urbs */
660 for (i = 0; i < N_IN_URB; i++)
7d28e74b 661 usb_kill_urb(portdata->in_urbs[i]);
58cfe911 662 for (i = 0; i < N_OUT_URB; i++)
7d28e74b 663 usb_kill_urb(portdata->out_urbs[i]);
58cfe911
MU		 664 }
665 port->tty = NULL;
666}
667
58cfe911 668/* Helper functions used by option_setup_urbs */
7bb75aee
AM		 669static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
670 int dir, void *ctx, char *buf, int len,
7d12e780 671 void (*callback)(struct urb *))
58cfe911
MU		 672{
673 struct urb *urb;
674
675 if (endpoint == -1)
676 return NULL; /* endpoint not needed */
677
678 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
679 if (urb == NULL) {
680 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
681 return NULL;
682 }
683
684 /* Fill URB using supplied data. */
685 usb_fill_bulk_urb(urb, serial->dev,
686 usb_sndbulkpipe(serial->dev, endpoint) | dir,
687 buf, len, callback, ctx);
688
689 return urb;
690}
691
692/* Setup urbs */
7bb75aee 693static void option_setup_urbs(struct usb_serial *serial)
58cfe911 694{
14f76cc7 695 int i,j;
ba460e48
MU		 696 struct usb_serial_port *port;
697 struct option_port_private *portdata;
58cfe911
MU		 698
699 dbg("%s", __FUNCTION__);
700
14f76cc7
MU		 701 for (i = 0; i < serial->num_ports; i++) {
702 port = serial->port[i];
703 portdata = usb_get_serial_port_data(port);
58cfe911
MU		 704
705 /* Do indat endpoints first */
14f76cc7
MU		 706 for (j = 0; j < N_IN_URB; ++j) {
707 portdata->in_urbs[j] = option_setup_urb (serial,
708 port->bulk_in_endpointAddress, USB_DIR_IN, port,
709 portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
710 }
58cfe911 711
14f76cc7
MU		 712 /* outdat endpoints */
713 for (j = 0; j < N_OUT_URB; ++j) {
714 portdata->out_urbs[j] = option_setup_urb (serial,
715 port->bulk_out_endpointAddress, USB_DIR_OUT, port,
716 portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
717 }
58cfe911
MU		 718 }
719}
720
7bb75aee 721static int option_send_setup(struct usb_serial_port *port)
58cfe911
MU		 722{
723 struct usb_serial *serial = port->serial;
724 struct option_port_private *portdata;
725
726 dbg("%s", __FUNCTION__);
727
8c152713
MAA		 728 if (port->number != 0)
729 return 0;
730
58cfe911
MU		 731 portdata = usb_get_serial_port_data(port);
732
733 if (port->tty) {
734 int val = 0;
735 if (portdata->dtr_state)
736 val |= 0x01;
737 if (portdata->rts_state)
738 val |= 0x02;
739
7bb75aee
AM		 740 return usb_control_msg(serial->dev,
741 usb_rcvctrlpipe(serial->dev, 0),
742 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
58cfe911
MU		 743 }
744
745 return 0;
746}
747
7bb75aee 748static int option_startup(struct usb_serial *serial)
58cfe911 749{
2129c4e1 750 int i, j, err;
ba460e48
MU		 751 struct usb_serial_port *port;
752 struct option_port_private *portdata;
2129c4e1 753 u8 *buffer;
58cfe911
MU		 754
755 dbg("%s", __FUNCTION__);
756
757 /* Now setup per port private data */
758 for (i = 0; i < serial->num_ports; i++) {
759 port = serial->port[i];
80b6ca48 760 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
58cfe911 761 if (!portdata) {
7bb75aee
AM		 762 dbg("%s: kmalloc for option_port_private (%d) failed!.",
763 __FUNCTION__, i);
58cfe911
MU		 764 return (1);
765 }
58cfe911 766
2129c4e1
ON		 767 for (j = 0; j < N_IN_URB; j++) {
768 buffer = (u8 *)__get_free_page(GFP_KERNEL);
769 if (!buffer)
770 goto bail_out_error;
771 portdata->in_buffer[j] = buffer;
772 }
773
774 for (j = 0; j < N_OUT_URB; j++) {
775 buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL);
776 if (!buffer)
777 goto bail_out_error2;
778 portdata->out_buffer[j] = buffer;
779 }
780
58cfe911
MU		 781 usb_set_serial_port_data(port, portdata);
782
783 if (! port->interrupt_in_urb)
784 continue;
785 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
786 if (err)
7bb75aee
AM		 787 dbg("%s: submit irq_in urb failed %d",
788 __FUNCTION__, err);
58cfe911
MU		 789 }
790
791 option_setup_urbs(serial);
792
793 return (0);
2129c4e1
ON		 794
795bail_out_error2:
796 for (j = 0; j < N_OUT_URB; j++)
797 kfree(portdata->out_buffer[j]);
798bail_out_error:
799 for (j = 0; j < N_IN_URB; j++)
800 if (portdata->in_buffer[j])
801 free_page((unsigned long)portdata->in_buffer[j]);
802 kfree(portdata);
803 return 1;
58cfe911
MU		 804}
805
7bb75aee 806static void option_shutdown(struct usb_serial *serial)
58cfe911 807{
ba460e48
MU		 808 int i, j;
809 struct usb_serial_port *port;
810 struct option_port_private *portdata;
58cfe911
MU		 811
812 dbg("%s", __FUNCTION__);
813
814 /* Stop reading/writing urbs */
815 for (i = 0; i < serial->num_ports; ++i) {
816 port = serial->port[i];
817 portdata = usb_get_serial_port_data(port);
818 for (j = 0; j < N_IN_URB; j++)
7d28e74b 819 usb_kill_urb(portdata->in_urbs[j]);
58cfe911 820 for (j = 0; j < N_OUT_URB; j++)
7d28e74b 821 usb_kill_urb(portdata->out_urbs[j]);
58cfe911
MU		 822 }
823
824 /* Now free them */
825 for (i = 0; i < serial->num_ports; ++i) {
826 port = serial->port[i];
827 portdata = usb_get_serial_port_data(port);
828
829 for (j = 0; j < N_IN_URB; j++) {
830 if (portdata->in_urbs[j]) {
831 usb_free_urb(portdata->in_urbs[j]);
2129c4e1 832 free_page((unsigned long)portdata->in_buffer[j]);
58cfe911
MU		 833 portdata->in_urbs[j] = NULL;
834 }
835 }
836 for (j = 0; j < N_OUT_URB; j++) {
837 if (portdata->out_urbs[j]) {
838 usb_free_urb(portdata->out_urbs[j]);
2129c4e1 839 kfree(portdata->out_buffer[j]);
58cfe911
MU		 840 portdata->out_urbs[j] = NULL;
841 }
842 }
843 }
844
845 /* Now free per port private data */
846 for (i = 0; i < serial->num_ports; i++) {
847 port = serial->port[i];
848 kfree(usb_get_serial_port_data(port));
849 }
850}
851
852MODULE_AUTHOR(DRIVER_AUTHOR);
853MODULE_DESCRIPTION(DRIVER_DESC);
854MODULE_VERSION(DRIVER_VERSION);
855MODULE_LICENSE("GPL");
856
ba460e48 857#ifdef CONFIG_USB_DEBUG
58cfe911
MU		 858module_param(debug, bool, S_IRUGO | S_IWUSR);
859MODULE_PARM_DESC(debug, "Debug messages");
ba460e48 860#endif
58cfe911 861
kernel source for telekom puls (alcatel/mediatek)