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Matthias Urlichs58cfe912005-05-23 17:00:48 -07001/*
2 Option Card (PCMCIA to) USB to Serial Driver
3
4 Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de>
5
6 This driver is free software; you can redistribute it and/or modify
7 it under the terms of Version 2 of the GNU General Public License as
8 published by the Free Software Foundation.
9
10 Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org>
11
12 History:
13
14 2005-05-19 v0.1 Initial version, based on incomplete docs
Matthias Urlichsba460e42005-07-14 00:33:47 -070015 and analysis of misbehavior with the standard driver
Matthias Urlichs58cfe912005-05-23 17:00:48 -070016 2005-05-20 v0.2 Extended the input buffer to avoid losing
17 random 64-byte chunks of data
18 2005-05-21 v0.3 implemented chars_in_buffer()
19 turned on low_latency
20 simplified the code somewhat
Matthias Urlichsba460e42005-07-14 00:33:47 -070021 2005-05-24 v0.4 option_write() sometimes deadlocked under heavy load
22 removed some dead code
23 added sponsor notice
24 coding style clean-up
25 2005-06-20 v0.4.1 add missing braces :-/
26 killed end-of-line whitespace
27 2005-07-15 v0.4.2 rename WLAN product to FUSION, add FUSION2
Matthias Urlichsb6137382005-09-22 00:48:40 -070028 2005-09-10 v0.4.3 added HUAWEI E600 card and Audiovox AirCard
Matthias Urlichsb27c73d2005-09-22 00:49:33 -070029 2005-09-20 v0.4.4 increased recv buffer size: the card sometimes
30 wants to send >2000 bytes.
Matthias Urlichsba460e42005-07-14 00:33:47 -070031
32 Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
33
Matthias Urlichs58cfe912005-05-23 17:00:48 -070034*/
Matthias Urlichsba460e42005-07-14 00:33:47 -070035
36#define DRIVER_VERSION "v0.4"
Matthias Urlichs58cfe912005-05-23 17:00:48 -070037#define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
38#define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver"
39
40#include <linux/config.h>
41#include <linux/kernel.h>
42#include <linux/jiffies.h>
43#include <linux/errno.h>
44#include <linux/tty.h>
45#include <linux/tty_flip.h>
46#include <linux/module.h>
47#include <linux/usb.h>
48#include "usb-serial.h"
49
50/* Function prototypes */
Andrew Morton7bb75ae2005-07-27 01:08:30 -070051static int option_open(struct usb_serial_port *port, struct file *filp);
52static void option_close(struct usb_serial_port *port, struct file *filp);
53static int option_startup(struct usb_serial *serial);
54static void option_shutdown(struct usb_serial *serial);
55static void option_rx_throttle(struct usb_serial_port *port);
56static void option_rx_unthrottle(struct usb_serial_port *port);
57static int option_write_room(struct usb_serial_port *port);
Matthias Urlichs58cfe912005-05-23 17:00:48 -070058
59static void option_instat_callback(struct urb *urb, struct pt_regs *regs);
60
Andrew Morton7bb75ae2005-07-27 01:08:30 -070061static int option_write(struct usb_serial_port *port,
62 const unsigned char *buf, int count);
Matthias Urlichs58cfe912005-05-23 17:00:48 -070063
Andrew Morton7bb75ae2005-07-27 01:08:30 -070064static int option_chars_in_buffer(struct usb_serial_port *port);
65static int option_ioctl(struct usb_serial_port *port, struct file *file,
66 unsigned int cmd, unsigned long arg);
67static void option_set_termios(struct usb_serial_port *port,
68 struct termios *old);
69static void option_break_ctl(struct usb_serial_port *port, int break_state);
70static int option_tiocmget(struct usb_serial_port *port, struct file *file);
71static int option_tiocmset(struct usb_serial_port *port, struct file *file,
72 unsigned int set, unsigned int clear);
73static int option_send_setup(struct usb_serial_port *port);
Matthias Urlichs58cfe912005-05-23 17:00:48 -070074
75/* Vendor and product IDs */
Matthias Urlichsba460e42005-07-14 00:33:47 -070076#define OPTION_VENDOR_ID 0x0AF0
Matthias Urlichsb6137382005-09-22 00:48:40 -070077#define HUAWEI_VENDOR_ID 0x12D1
78#define AUDIOVOX_VENDOR_ID 0x0F3D
Matthias Urlichs58cfe912005-05-23 17:00:48 -070079
Matthias Urlichsba460e42005-07-14 00:33:47 -070080#define OPTION_PRODUCT_OLD 0x5000
81#define OPTION_PRODUCT_FUSION 0x6000
82#define OPTION_PRODUCT_FUSION2 0x6300
Matthias Urlichsb6137382005-09-22 00:48:40 -070083#define HUAWEI_PRODUCT_E600 0x1001
84#define AUDIOVOX_PRODUCT_AIRCARD 0x0112
Matthias Urlichsba460e42005-07-14 00:33:47 -070085
Matthias Urlichs58cfe912005-05-23 17:00:48 -070086static struct usb_device_id option_ids[] = {
87 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
Matthias Urlichsba460e42005-07-14 00:33:47 -070088 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) },
89 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) },
Matthias Urlichsb6137382005-09-22 00:48:40 -070090 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
91 { USB_DEVICE(AUDIOVOX_VENDOR_ID, AUDIOVOX_PRODUCT_AIRCARD) },
Matthias Urlichs58cfe912005-05-23 17:00:48 -070092 { } /* Terminating entry */
93};
94
95MODULE_DEVICE_TABLE(usb, option_ids);
96
97static struct usb_driver option_driver = {
98 .owner = THIS_MODULE,
99 .name = "option",
100 .probe = usb_serial_probe,
101 .disconnect = usb_serial_disconnect,
102 .id_table = option_ids,
103};
104
105/* The card has three separate interfaces, wich the serial driver
106 * recognizes separately, thus num_port=1.
107 */
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -0700108static struct usb_serial_driver option_3port_device = {
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -0700109 .driver = {
110 .owner = THIS_MODULE,
111 },
Matthias Urlichsba460e42005-07-14 00:33:47 -0700112 .name = "Option 3G data card",
113 .short_name = "option",
114 .id_table = option_ids,
115 .num_interrupt_in = NUM_DONT_CARE,
116 .num_bulk_in = NUM_DONT_CARE,
117 .num_bulk_out = NUM_DONT_CARE,
118 .num_ports = 1, /* 3, but the card reports its ports separately */
119 .open = option_open,
120 .close = option_close,
121 .write = option_write,
122 .write_room = option_write_room,
123 .chars_in_buffer = option_chars_in_buffer,
124 .throttle = option_rx_throttle,
125 .unthrottle = option_rx_unthrottle,
126 .ioctl = option_ioctl,
127 .set_termios = option_set_termios,
128 .break_ctl = option_break_ctl,
129 .tiocmget = option_tiocmget,
130 .tiocmset = option_tiocmset,
131 .attach = option_startup,
132 .shutdown = option_shutdown,
133 .read_int_callback = option_instat_callback,
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700134};
135
Matthias Urlichsba460e42005-07-14 00:33:47 -0700136#ifdef CONFIG_USB_DEBUG
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700137static int debug;
Matthias Urlichsba460e42005-07-14 00:33:47 -0700138#else
139#define debug 0
140#endif
141
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700142/* per port private data */
143
Matthias Urlichsba460e42005-07-14 00:33:47 -0700144#define N_IN_URB 4
145#define N_OUT_URB 1
Matthias Urlichsb27c73d2005-09-22 00:49:33 -0700146#define IN_BUFLEN 4096
Matthias Urlichsba460e42005-07-14 00:33:47 -0700147#define OUT_BUFLEN 128
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700148
149struct option_port_private {
150 /* Input endpoints and buffer for this port */
Matthias Urlichsba460e42005-07-14 00:33:47 -0700151 struct urb *in_urbs[N_IN_URB];
152 char in_buffer[N_IN_URB][IN_BUFLEN];
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700153 /* Output endpoints and buffer for this port */
Matthias Urlichsba460e42005-07-14 00:33:47 -0700154 struct urb *out_urbs[N_OUT_URB];
155 char out_buffer[N_OUT_URB][OUT_BUFLEN];
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700156
157 /* Settings for the port */
Matthias Urlichsba460e42005-07-14 00:33:47 -0700158 int rts_state; /* Handshaking pins (outputs) */
159 int dtr_state;
160 int cts_state; /* Handshaking pins (inputs) */
161 int dsr_state;
162 int dcd_state;
163 int ri_state;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700164
Matthias Urlichsba460e42005-07-14 00:33:47 -0700165 unsigned long tx_start_time[N_OUT_URB];
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700166};
167
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700168/* Functions used by new usb-serial code. */
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700169static int __init option_init(void)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700170{
171 int retval;
172 retval = usb_serial_register(&option_3port_device);
173 if (retval)
174 goto failed_3port_device_register;
175 retval = usb_register(&option_driver);
176 if (retval)
177 goto failed_driver_register;
178
179 info(DRIVER_DESC ": " DRIVER_VERSION);
180
181 return 0;
182
183failed_driver_register:
184 usb_serial_deregister (&option_3port_device);
185failed_3port_device_register:
186 return retval;
187}
188
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700189static void __exit option_exit(void)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700190{
191 usb_deregister (&option_driver);
192 usb_serial_deregister (&option_3port_device);
193}
194
195module_init(option_init);
196module_exit(option_exit);
197
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700198static void option_rx_throttle(struct usb_serial_port *port)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700199{
200 dbg("%s", __FUNCTION__);
201}
202
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700203static void option_rx_unthrottle(struct usb_serial_port *port)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700204{
205 dbg("%s", __FUNCTION__);
206}
207
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700208static void option_break_ctl(struct usb_serial_port *port, int break_state)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700209{
210 /* Unfortunately, I don't know how to send a break */
Matthias Urlichsba460e42005-07-14 00:33:47 -0700211 dbg("%s", __FUNCTION__);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700212}
213
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700214static void option_set_termios(struct usb_serial_port *port,
215 struct termios *old_termios)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700216{
217 dbg("%s", __FUNCTION__);
218
219 option_send_setup(port);
220}
221
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700222static int option_tiocmget(struct usb_serial_port *port, struct file *file)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700223{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700224 unsigned int value;
225 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700226
227 portdata = usb_get_serial_port_data(port);
228
229 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
230 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
231 ((portdata->cts_state) ? TIOCM_CTS : 0) |
232 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
233 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
234 ((portdata->ri_state) ? TIOCM_RNG : 0);
235
236 return value;
237}
238
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700239static int option_tiocmset(struct usb_serial_port *port, struct file *file,
240 unsigned int set, unsigned int clear)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700241{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700242 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700243
244 portdata = usb_get_serial_port_data(port);
245
246 if (set & TIOCM_RTS)
247 portdata->rts_state = 1;
248 if (set & TIOCM_DTR)
249 portdata->dtr_state = 1;
250
251 if (clear & TIOCM_RTS)
252 portdata->rts_state = 0;
253 if (clear & TIOCM_DTR)
254 portdata->dtr_state = 0;
255 return option_send_setup(port);
256}
257
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700258static int option_ioctl(struct usb_serial_port *port, struct file *file,
259 unsigned int cmd, unsigned long arg)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700260{
261 return -ENOIOCTLCMD;
262}
263
264/* Write */
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700265static int option_write(struct usb_serial_port *port,
266 const unsigned char *buf, int count)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700267{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700268 struct option_port_private *portdata;
269 int i;
270 int left, todo;
271 struct urb *this_urb = NULL; /* spurious */
272 int err;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700273
274 portdata = usb_get_serial_port_data(port);
275
276 dbg("%s: write (%d chars)", __FUNCTION__, count);
277
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700278 i = 0;
279 left = count;
Matthias Urlichsba460e42005-07-14 00:33:47 -0700280 for (i=0; left > 0 && i < N_OUT_URB; i++) {
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700281 todo = left;
282 if (todo > OUT_BUFLEN)
283 todo = OUT_BUFLEN;
284
Matthias Urlichsba460e42005-07-14 00:33:47 -0700285 this_urb = portdata->out_urbs[i];
286 if (this_urb->status == -EINPROGRESS) {
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700287 if (time_before(jiffies,
288 portdata->tx_start_time[i] + 10 * HZ))
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700289 continue;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700290 usb_unlink_urb(this_urb);
Matthias Urlichsba460e42005-07-14 00:33:47 -0700291 continue;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700292 }
Matthias Urlichsba460e42005-07-14 00:33:47 -0700293 if (this_urb->status != 0)
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700294 dbg("usb_write %p failed (err=%d)",
295 this_urb, this_urb->status);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700296
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700297 dbg("%s: endpoint %d buf %d", __FUNCTION__,
298 usb_pipeendpoint(this_urb->pipe), i);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700299
Matthias Urlichsba460e42005-07-14 00:33:47 -0700300 /* send the data */
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700301 memcpy (this_urb->transfer_buffer, buf, todo);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700302 this_urb->transfer_buffer_length = todo;
303
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700304 this_urb->dev = port->serial->dev;
305 err = usb_submit_urb(this_urb, GFP_ATOMIC);
306 if (err) {
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700307 dbg("usb_submit_urb %p (write bulk) failed "
308 "(%d, has %d)", this_urb,
309 err, this_urb->status);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700310 continue;
311 }
312 portdata->tx_start_time[i] = jiffies;
313 buf += todo;
314 left -= todo;
315 }
316
317 count -= left;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700318 dbg("%s: wrote (did %d)", __FUNCTION__, count);
319 return count;
320}
321
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700322static void option_indat_callback(struct urb *urb, struct pt_regs *regs)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700323{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700324 int i, err;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700325 int endpoint;
326 struct usb_serial_port *port;
327 struct tty_struct *tty;
328 unsigned char *data = urb->transfer_buffer;
329
330 dbg("%s: %p", __FUNCTION__, urb);
331
332 endpoint = usb_pipeendpoint(urb->pipe);
333 port = (struct usb_serial_port *) urb->context;
334
335 if (urb->status) {
336 dbg("%s: nonzero status: %d on endpoint %02x.",
337 __FUNCTION__, urb->status, endpoint);
338 } else {
339 tty = port->tty;
340 if (urb->actual_length) {
341 for (i = 0; i < urb->actual_length ; ++i) {
342 if (tty->flip.count >= TTY_FLIPBUF_SIZE)
343 tty_flip_buffer_push(tty);
344 tty_insert_flip_char(tty, data[i], 0);
345 }
346 tty_flip_buffer_push(tty);
347 } else {
348 dbg("%s: empty read urb received", __FUNCTION__);
349 }
350
351 /* Resubmit urb so we continue receiving */
352 if (port->open_count && urb->status != -ESHUTDOWN) {
353 err = usb_submit_urb(urb, GFP_ATOMIC);
354 if (err)
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700355 printk(KERN_ERR "%s: resubmit read urb failed. "
356 "(%d)", __FUNCTION__, err);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700357 }
358 }
359 return;
360}
361
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700362static void option_outdat_callback(struct urb *urb, struct pt_regs *regs)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700363{
364 struct usb_serial_port *port;
365
366 dbg("%s", __FUNCTION__);
367
368 port = (struct usb_serial_port *) urb->context;
369
370 if (port->open_count)
371 schedule_work(&port->work);
372}
373
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700374static void option_instat_callback(struct urb *urb, struct pt_regs *regs)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700375{
376 int err;
377 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
378 struct option_port_private *portdata = usb_get_serial_port_data(port);
379 struct usb_serial *serial = port->serial;
380
381 dbg("%s", __FUNCTION__);
382 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
383
384 if (urb->status == 0) {
385 struct usb_ctrlrequest *req_pkt =
386 (struct usb_ctrlrequest *)urb->transfer_buffer;
387
388 if (!req_pkt) {
389 dbg("%s: NULL req_pkt\n", __FUNCTION__);
390 return;
391 }
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700392 if ((req_pkt->bRequestType == 0xA1) &&
393 (req_pkt->bRequest == 0x20)) {
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700394 int old_dcd_state;
395 unsigned char signals = *((unsigned char *)
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700396 urb->transfer_buffer +
397 sizeof(struct usb_ctrlrequest));
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700398
399 dbg("%s: signal x%x", __FUNCTION__, signals);
400
401 old_dcd_state = portdata->dcd_state;
402 portdata->cts_state = 1;
403 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
404 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
405 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
406
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700407 if (port->tty && !C_CLOCAL(port->tty) &&
408 old_dcd_state && !portdata->dcd_state)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700409 tty_hangup(port->tty);
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700410 } else {
411 dbg("%s: type %x req %x", __FUNCTION__,
412 req_pkt->bRequestType,req_pkt->bRequest);
413 }
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700414 } else
415 dbg("%s: error %d", __FUNCTION__, urb->status);
416
417 /* Resubmit urb so we continue receiving IRQ data */
418 if (urb->status != -ESHUTDOWN) {
419 urb->dev = serial->dev;
420 err = usb_submit_urb(urb, GFP_ATOMIC);
421 if (err)
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700422 dbg("%s: resubmit intr urb failed. (%d)",
423 __FUNCTION__, err);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700424 }
425}
426
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700427static int option_write_room(struct usb_serial_port *port)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700428{
429 struct option_port_private *portdata;
430 int i;
431 int data_len = 0;
432 struct urb *this_urb;
433
434 portdata = usb_get_serial_port_data(port);
435
Matthias Urlichsba460e42005-07-14 00:33:47 -0700436 for (i=0; i < N_OUT_URB; i++) {
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700437 this_urb = portdata->out_urbs[i];
438 if (this_urb && this_urb->status != -EINPROGRESS)
439 data_len += OUT_BUFLEN;
Matthias Urlichsba460e42005-07-14 00:33:47 -0700440 }
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700441
442 dbg("%s: %d", __FUNCTION__, data_len);
443 return data_len;
444}
445
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700446static int option_chars_in_buffer(struct usb_serial_port *port)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700447{
448 struct option_port_private *portdata;
449 int i;
450 int data_len = 0;
451 struct urb *this_urb;
452
453 portdata = usb_get_serial_port_data(port);
454
Matthias Urlichsba460e42005-07-14 00:33:47 -0700455 for (i=0; i < N_OUT_URB; i++) {
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700456 this_urb = portdata->out_urbs[i];
457 if (this_urb && this_urb->status == -EINPROGRESS)
458 data_len += this_urb->transfer_buffer_length;
Matthias Urlichsba460e42005-07-14 00:33:47 -0700459 }
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700460 dbg("%s: %d", __FUNCTION__, data_len);
461 return data_len;
462}
463
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700464static int option_open(struct usb_serial_port *port, struct file *filp)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700465{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700466 struct option_port_private *portdata;
467 struct usb_serial *serial = port->serial;
468 int i, err;
469 struct urb *urb;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700470
471 portdata = usb_get_serial_port_data(port);
472
473 dbg("%s", __FUNCTION__);
474
475 /* Set some sane defaults */
476 portdata->rts_state = 1;
477 portdata->dtr_state = 1;
478
479 /* Reset low level data toggle and start reading from endpoints */
480 for (i = 0; i < N_IN_URB; i++) {
481 urb = portdata->in_urbs[i];
482 if (! urb)
483 continue;
484 if (urb->dev != serial->dev) {
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700485 dbg("%s: dev %p != %p", __FUNCTION__,
486 urb->dev, serial->dev);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700487 continue;
488 }
489
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700490 /*
491 * make sure endpoint data toggle is synchronized with the
492 * device
493 */
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700494 usb_clear_halt(urb->dev, urb->pipe);
495
496 err = usb_submit_urb(urb, GFP_KERNEL);
497 if (err) {
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700498 dbg("%s: submit urb %d failed (%d) %d",
499 __FUNCTION__, i, err,
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700500 urb->transfer_buffer_length);
501 }
502 }
503
504 /* Reset low level data toggle on out endpoints */
505 for (i = 0; i < N_OUT_URB; i++) {
506 urb = portdata->out_urbs[i];
507 if (! urb)
508 continue;
509 urb->dev = serial->dev;
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700510 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
511 usb_pipeout(urb->pipe), 0); */
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700512 }
513
514 port->tty->low_latency = 1;
515
516 option_send_setup(port);
517
518 return (0);
519}
520
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700521static inline void stop_urb(struct urb *urb)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700522{
Greg Kroah-Hartman242cf672005-07-29 16:11:07 -0400523 if (urb && urb->status == -EINPROGRESS)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700524 usb_kill_urb(urb);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700525}
526
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700527static void option_close(struct usb_serial_port *port, struct file *filp)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700528{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700529 int i;
530 struct usb_serial *serial = port->serial;
531 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700532
533 dbg("%s", __FUNCTION__);
534 portdata = usb_get_serial_port_data(port);
535
536 portdata->rts_state = 0;
537 portdata->dtr_state = 0;
538
539 if (serial->dev) {
540 option_send_setup(port);
541
542 /* Stop reading/writing urbs */
543 for (i = 0; i < N_IN_URB; i++)
544 stop_urb(portdata->in_urbs[i]);
545 for (i = 0; i < N_OUT_URB; i++)
546 stop_urb(portdata->out_urbs[i]);
547 }
548 port->tty = NULL;
549}
550
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700551/* Helper functions used by option_setup_urbs */
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700552static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
553 int dir, void *ctx, char *buf, int len,
554 void (*callback)(struct urb *, struct pt_regs *regs))
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700555{
556 struct urb *urb;
557
558 if (endpoint == -1)
559 return NULL; /* endpoint not needed */
560
561 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
562 if (urb == NULL) {
563 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint);
564 return NULL;
565 }
566
567 /* Fill URB using supplied data. */
568 usb_fill_bulk_urb(urb, serial->dev,
569 usb_sndbulkpipe(serial->dev, endpoint) | dir,
570 buf, len, callback, ctx);
571
572 return urb;
573}
574
575/* Setup urbs */
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700576static void option_setup_urbs(struct usb_serial *serial)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700577{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700578 int j;
579 struct usb_serial_port *port;
580 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700581
582 dbg("%s", __FUNCTION__);
583
584 port = serial->port[0];
585 portdata = usb_get_serial_port_data(port);
586
587 /* Do indat endpoints first */
588 for (j = 0; j <= N_IN_URB; ++j) {
589 portdata->in_urbs[j] = option_setup_urb (serial,
590 port->bulk_in_endpointAddress, USB_DIR_IN, port,
591 portdata->in_buffer[j], IN_BUFLEN, option_indat_callback);
592 }
593
594 /* outdat endpoints */
595 for (j = 0; j <= N_OUT_URB; ++j) {
596 portdata->out_urbs[j] = option_setup_urb (serial,
597 port->bulk_out_endpointAddress, USB_DIR_OUT, port,
598 portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback);
599 }
600}
601
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700602static int option_send_setup(struct usb_serial_port *port)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700603{
604 struct usb_serial *serial = port->serial;
605 struct option_port_private *portdata;
606
607 dbg("%s", __FUNCTION__);
608
609 portdata = usb_get_serial_port_data(port);
610
611 if (port->tty) {
612 int val = 0;
613 if (portdata->dtr_state)
614 val |= 0x01;
615 if (portdata->rts_state)
616 val |= 0x02;
617
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700618 return usb_control_msg(serial->dev,
619 usb_rcvctrlpipe(serial->dev, 0),
620 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700621 }
622
623 return 0;
624}
625
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700626static int option_startup(struct usb_serial *serial)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700627{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700628 int i, err;
629 struct usb_serial_port *port;
630 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700631
632 dbg("%s", __FUNCTION__);
633
634 /* Now setup per port private data */
635 for (i = 0; i < serial->num_ports; i++) {
636 port = serial->port[i];
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700637 portdata = kmalloc(sizeof(*portdata), GFP_KERNEL);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700638 if (!portdata) {
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700639 dbg("%s: kmalloc for option_port_private (%d) failed!.",
640 __FUNCTION__, i);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700641 return (1);
642 }
643 memset(portdata, 0, sizeof(struct option_port_private));
644
645 usb_set_serial_port_data(port, portdata);
646
647 if (! port->interrupt_in_urb)
648 continue;
649 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
650 if (err)
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700651 dbg("%s: submit irq_in urb failed %d",
652 __FUNCTION__, err);
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700653 }
654
655 option_setup_urbs(serial);
656
657 return (0);
658}
659
Andrew Morton7bb75ae2005-07-27 01:08:30 -0700660static void option_shutdown(struct usb_serial *serial)
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700661{
Matthias Urlichsba460e42005-07-14 00:33:47 -0700662 int i, j;
663 struct usb_serial_port *port;
664 struct option_port_private *portdata;
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700665
666 dbg("%s", __FUNCTION__);
667
668 /* Stop reading/writing urbs */
669 for (i = 0; i < serial->num_ports; ++i) {
670 port = serial->port[i];
671 portdata = usb_get_serial_port_data(port);
672 for (j = 0; j < N_IN_URB; j++)
673 stop_urb(portdata->in_urbs[j]);
674 for (j = 0; j < N_OUT_URB; j++)
675 stop_urb(portdata->out_urbs[j]);
676 }
677
678 /* Now free them */
679 for (i = 0; i < serial->num_ports; ++i) {
680 port = serial->port[i];
681 portdata = usb_get_serial_port_data(port);
682
683 for (j = 0; j < N_IN_URB; j++) {
684 if (portdata->in_urbs[j]) {
685 usb_free_urb(portdata->in_urbs[j]);
686 portdata->in_urbs[j] = NULL;
687 }
688 }
689 for (j = 0; j < N_OUT_URB; j++) {
690 if (portdata->out_urbs[j]) {
691 usb_free_urb(portdata->out_urbs[j]);
692 portdata->out_urbs[j] = NULL;
693 }
694 }
695 }
696
697 /* Now free per port private data */
698 for (i = 0; i < serial->num_ports; i++) {
699 port = serial->port[i];
700 kfree(usb_get_serial_port_data(port));
701 }
702}
703
704MODULE_AUTHOR(DRIVER_AUTHOR);
705MODULE_DESCRIPTION(DRIVER_DESC);
706MODULE_VERSION(DRIVER_VERSION);
707MODULE_LICENSE("GPL");
708
Matthias Urlichsba460e42005-07-14 00:33:47 -0700709#ifdef CONFIG_USB_DEBUG
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700710module_param(debug, bool, S_IRUGO | S_IWUSR);
711MODULE_PARM_DESC(debug, "Debug messages");
Matthias Urlichsba460e42005-07-14 00:33:47 -0700712#endif
Matthias Urlichs58cfe912005-05-23 17:00:48 -0700713