1 /*
2 * USB Keyspan PDA / Xircom / Entregra Converter driver
3 *
4 * Copyright (C) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 1999, 2000 Brian Warner <warner@lothar.com>
6 * Copyright (C) 2000 Al Borchers <borchers@steinerpoint.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * See Documentation/usb/usb-serial.txt for more information on using this driver
14 *
15 * (09/07/2001) gkh
16 * cleaned up the Xircom support. Added ids for Entregra device which is
17 * the same as the Xircom device. Enabled the code to be compiled for
18 * either Xircom or Keyspan devices.
19 *
20 * (08/11/2001) Cristian M. Craciunescu
21 * support for Xircom PGSDB9
22 *
23 * (05/31/2001) gkh
24 * switched from using spinlock to a semaphore, which fixes lots of problems.
25 *
26 * (04/08/2001) gb
27 * Identify version on module load.
28 *
29 * (11/01/2000) Adam J. Richter
30 * usb_device_id table support
31 *
32 * (10/05/2000) gkh
33 * Fixed bug with urb->dev not being set properly, now that the usb
34 * core needs it.
35 *
36 * (08/28/2000) gkh
37 * Added locks for SMP safeness.
38 * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
39 * than once.
40 *
41 * (07/20/2000) borchers
42 * - keyspan_pda_write no longer sleeps if it is called on interrupt time;
43 * PPP and the line discipline with stty echo on can call write on
44 * interrupt time and this would cause an oops if write slept
45 * - if keyspan_pda_write is in an interrupt, it will not call
46 * usb_control_msg (which sleeps) to query the room in the device
47 * buffer, it simply uses the current room value it has
48 * - if the urb is busy or if it is throttled keyspan_pda_write just
49 * returns 0, rather than sleeping to wait for this to change; the
50 * write_chan code in n_tty.c will sleep if needed before calling
51 * keyspan_pda_write again
52 * - if the device needs to be unthrottled, write now queues up the
53 * call to usb_control_msg (which sleeps) to unthrottle the device
54 * - the wakeups from keyspan_pda_write_bulk_callback are queued rather
55 * than done directly from the callback to avoid the race in write_chan
56 * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the
57 * urb status is -EINPROGRESS, meaning it cannot write at the moment
58 *
59 * (07/19/2000) gkh
60 * Added module_init and module_exit functions to handle the fact that this
61 * driver is a loadable module now.
62 *
63 * (03/26/2000) gkh
64 * Split driver up into device specific pieces.
65 *
66 */
67
68
69 #include <linux/kernel.h>
70 #include <linux/errno.h>
71 #include <linux/init.h>
72 #include <linux/slab.h>
73 #include <linux/tty.h>
74 #include <linux/tty_driver.h>
75 #include <linux/tty_flip.h>
76 #include <linux/module.h>
77 #include <linux/spinlock.h>
78 #include <linux/workqueue.h>
79 #include <asm/uaccess.h>
80 #include <linux/usb.h>
81 #include <linux/usb/serial.h>
82
83 static int debug;
84
85 struct ezusb_hex_record {
86 __u16 address;
87 __u8 data_size;
88 __u8 data[16];
89 };
90
91 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
92 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
93 #define KEYSPAN
94 #else
95 #undef KEYSPAN
96 #endif
97 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
98 #define XIRCOM
99 #else
100 #undef XIRCOM
101 #endif
102
103 #ifdef KEYSPAN
104 #include "keyspan_pda_fw.h"
105 #endif
106
107 #ifdef XIRCOM
108 #include "xircom_pgs_fw.h"
109 #endif
110
111 /*
112 * Version Information
113 */
114 #define DRIVER_VERSION "v1.1"
115 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
116 #define DRIVER_DESC "USB Keyspan PDA Converter driver"
117
118 struct keyspan_pda_private {
119 int tx_room;
120 int tx_throttled;
121 struct work_struct wakeup_work;
122 struct work_struct unthrottle_work;
123 struct usb_serial *serial;
124 struct usb_serial_port *port;
125 };
126
127
128 #define KEYSPAN_VENDOR_ID 0x06cd
129 #define KEYSPAN_PDA_FAKE_ID 0x0103
130 #define KEYSPAN_PDA_ID 0x0104 /* no clue */
131
132 /* For Xircom PGSDB9 and older Entregra version of the same device */
133 #define XIRCOM_VENDOR_ID 0x085a
134 #define XIRCOM_FAKE_ID 0x8027
135 #define ENTREGRA_VENDOR_ID 0x1645
136 #define ENTREGRA_FAKE_ID 0x8093
137
138 static struct usb_device_id id_table_combined [] = {
139 #ifdef KEYSPAN
140 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
141 #endif
142 #ifdef XIRCOM
143 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
144 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
145 #endif
146 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
147 { } /* Terminating entry */
148 };
149
150 MODULE_DEVICE_TABLE (usb, id_table_combined);
151
152 static struct usb_driver keyspan_pda_driver = {
153 .name = "keyspan_pda",
154 .probe = usb_serial_probe,
155 .disconnect = usb_serial_disconnect,
156 .id_table = id_table_combined,
157 .no_dynamic_id = 1,
158 };
159
160 static struct usb_device_id id_table_std [] = {
161 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
162 { } /* Terminating entry */
163 };
164
165 #ifdef KEYSPAN
166 static struct usb_device_id id_table_fake [] = {
167 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
168 { } /* Terminating entry */
169 };
170 #endif
171
172 #ifdef XIRCOM
173 static struct usb_device_id id_table_fake_xircom [] = {
174 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
175 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
176 { }
177 };
178 #endif
179
180 static void keyspan_pda_wakeup_write(struct work_struct *work)
181 {
182 struct keyspan_pda_private *priv =
183 container_of(work, struct keyspan_pda_private, wakeup_work);
184 struct usb_serial_port *port = priv->port;
185
186 tty_wakeup(port->tty);
187 }
188
189 static void keyspan_pda_request_unthrottle(struct work_struct *work)
190 {
191 struct keyspan_pda_private *priv =
192 container_of(work, struct keyspan_pda_private, unthrottle_work);
193 struct usb_serial *serial = priv->serial;
194 int result;
195
196 dbg(" request_unthrottle");
197 /* ask the device to tell us when the tx buffer becomes
198 sufficiently empty */
199 result = usb_control_msg(serial->dev,
200 usb_sndctrlpipe(serial->dev, 0),
201 7, /* request_unthrottle */
202 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
203 | USB_DIR_OUT,
204 16, /* value: threshold */
205 0, /* index */
206 NULL,
207 0,
208 2000);
209 if (result < 0)
210 dbg("%s - error %d from usb_control_msg",
211 __FUNCTION__, result);
212 }
213
214
215 static void keyspan_pda_rx_interrupt (struct urb *urb)
216 {
217 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
218 struct tty_struct *tty = port->tty;
219 unsigned char *data = urb->transfer_buffer;
220 int i;
221 int retval;
222 int status = urb->status;
223 struct keyspan_pda_private *priv;
224 priv = usb_get_serial_port_data(port);
225
226 switch (status) {
227 case 0:
228 /* success */
229 break;
230 case -ECONNRESET:
231 case -ENOENT:
232 case -ESHUTDOWN:
233 /* this urb is terminated, clean up */
234 dbg("%s - urb shutting down with status: %d",
235 __FUNCTION__, status);
236 return;
237 default:
238 dbg("%s - nonzero urb status received: %d",
239 __FUNCTION__, status);
240 goto exit;
241 }
242
243 /* see if the message is data or a status interrupt */
244 switch (data[0]) {
245 case 0:
246 /* rest of message is rx data */
247 if (urb->actual_length) {
248 for (i = 1; i < urb->actual_length ; ++i) {
249 tty_insert_flip_char(tty, data[i], 0);
250 }
251 tty_flip_buffer_push(tty);
252 }
253 break;
254 case 1:
255 /* status interrupt */
256 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
257 switch (data[1]) {
258 case 1: /* modemline change */
259 break;
260 case 2: /* tx unthrottle interrupt */
261 priv->tx_throttled = 0;
262 /* queue up a wakeup at scheduler time */
263 schedule_work(&priv->wakeup_work);
264 break;
265 default:
266 break;
267 }
268 break;
269 default:
270 break;
271 }
272
273 exit:
274 retval = usb_submit_urb (urb, GFP_ATOMIC);
275 if (retval)
276 err ("%s - usb_submit_urb failed with result %d",
277 __FUNCTION__, retval);
278 }
279
280
281 static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
282 {
283 /* stop receiving characters. We just turn off the URB request, and
284 let chars pile up in the device. If we're doing hardware
285 flowcontrol, the device will signal the other end when its buffer
286 fills up. If we're doing XON/XOFF, this would be a good time to
287 send an XOFF, although it might make sense to foist that off
288 upon the device too. */
289
290 dbg("keyspan_pda_rx_throttle port %d", port->number);
291 usb_kill_urb(port->interrupt_in_urb);
292 }
293
294
295 static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
296 {
297 /* just restart the receive interrupt URB */
298 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
299 port->interrupt_in_urb->dev = port->serial->dev;
300 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
301 dbg(" usb_submit_urb(read urb) failed");
302 return;
303 }
304
305
306 static speed_t keyspan_pda_setbaud (struct usb_serial *serial, speed_t baud)
307 {
308 int rc;
309 int bindex;
310
311 switch(baud) {
312 case 110: bindex = 0; break;
313 case 300: bindex = 1; break;
314 case 1200: bindex = 2; break;
315 case 2400: bindex = 3; break;
316 case 4800: bindex = 4; break;
317 case 9600: bindex = 5; break;
318 case 19200: bindex = 6; break;
319 case 38400: bindex = 7; break;
320 case 57600: bindex = 8; break;
321 case 115200: bindex = 9; break;
322 default:
323 bindex = 5; /* Default to 9600 */
324 baud = 9600;
325 }
326
327 /* rather than figure out how to sleep while waiting for this
328 to complete, I just use the "legacy" API. */
329 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
330 0, /* set baud */
331 USB_TYPE_VENDOR
332 | USB_RECIP_INTERFACE
333 | USB_DIR_OUT, /* type */
334 bindex, /* value */
335 0, /* index */
336 NULL, /* &data */
337 0, /* size */
338 2000); /* timeout */
339 if (rc < 0)
340 return 0;
341 return baud;
342 }
343
344
345 static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
346 {
347 struct usb_serial *serial = port->serial;
348 int value;
349 int result;
350
351 if (break_state == -1)
352 value = 1; /* start break */
353 else
354 value = 0; /* clear break */
355 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
356 4, /* set break */
357 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
358 value, 0, NULL, 0, 2000);
359 if (result < 0)
360 dbg("%s - error %d from usb_control_msg",
361 __FUNCTION__, result);
362 /* there is something funky about this.. the TCSBRK that 'cu' performs
363 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
364 seconds apart, but it feels like the break sent isn't as long as it
365 is on /dev/ttyS0 */
366 }
367
368
369 static void keyspan_pda_set_termios (struct usb_serial_port *port,
370 struct ktermios *old_termios)
371 {
372 struct usb_serial *serial = port->serial;
373 speed_t speed;
374
375 /* cflag specifies lots of stuff: number of stop bits, parity, number
376 of data bits, baud. What can the device actually handle?:
377 CSTOPB (1 stop bit or 2)
378 PARENB (parity)
379 CSIZE (5bit .. 8bit)
380 There is minimal hw support for parity (a PSW bit seems to hold the
381 parity of whatever is in the accumulator). The UART either deals
382 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
383 1 special, stop). So, with firmware changes, we could do:
384 8N1: 10 bit
385 8N2: 11 bit, extra bit always (mark?)
386 8[EOMS]1: 11 bit, extra bit is parity
387 7[EOMS]1: 10 bit, b0/b7 is parity
388 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
389
390 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
391 bit.
392
393 For now, just do baud. */
394
395 speed = tty_get_baud_rate(port->tty);
396 speed = keyspan_pda_setbaud(serial, speed);
397
398 if (speed == 0) {
399 dbg("can't handle requested baud rate");
400 /* It hasn't changed so.. */
401 speed = tty_termios_baud_rate(old_termios);
402 }
403 /* Only speed can change so copy the old h/w parameters
404 then encode the new speed */
405 tty_termios_copy_hw(port->tty->termios, old_termios);
406 tty_encode_baud_rate(port->tty, speed, speed);
407 }
408
409
410 /* modem control pins: DTR and RTS are outputs and can be controlled.
411 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
412 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
413
414 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
415 unsigned char *value)
416 {
417 int rc;
418 unsigned char data;
419 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
420 3, /* get pins */
421 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
422 0, 0, &data, 1, 2000);
423 if (rc > 0)
424 *value = data;
425 return rc;
426 }
427
428
429 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
430 unsigned char value)
431 {
432 int rc;
433 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
434 3, /* set pins */
435 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
436 value, 0, NULL, 0, 2000);
437 return rc;
438 }
439
440 static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
441 {
442 struct usb_serial *serial = port->serial;
443 int rc;
444 unsigned char status;
445 int value;
446
447 rc = keyspan_pda_get_modem_info(serial, &status);
448 if (rc < 0)
449 return rc;
450 value =
451 ((status & (1<<7)) ? TIOCM_DTR : 0) |
452 ((status & (1<<6)) ? TIOCM_CAR : 0) |
453 ((status & (1<<5)) ? TIOCM_RNG : 0) |
454 ((status & (1<<4)) ? TIOCM_DSR : 0) |
455 ((status & (1<<3)) ? TIOCM_CTS : 0) |
456 ((status & (1<<2)) ? TIOCM_RTS : 0);
457 return value;
458 }
459
460 static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
461 unsigned int set, unsigned int clear)
462 {
463 struct usb_serial *serial = port->serial;
464 int rc;
465 unsigned char status;
466
467 rc = keyspan_pda_get_modem_info(serial, &status);
468 if (rc < 0)
469 return rc;
470
471 if (set & TIOCM_RTS)
472 status |= (1<<2);
473 if (set & TIOCM_DTR)
474 status |= (1<<7);
475
476 if (clear & TIOCM_RTS)
477 status &= ~(1<<2);
478 if (clear & TIOCM_DTR)
479 status &= ~(1<<7);
480 rc = keyspan_pda_set_modem_info(serial, status);
481 return rc;
482 }
483
484 static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
485 unsigned int cmd, unsigned long arg)
486 {
487 switch (cmd) {
488 case TIOCMIWAIT:
489 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
490 /* TODO */
491 case TIOCGICOUNT:
492 /* return count of modemline transitions */
493 return 0; /* TODO */
494 }
495
496 return -ENOIOCTLCMD;
497 }
498
499 static int keyspan_pda_write(struct usb_serial_port *port,
500 const unsigned char *buf, int count)
501 {
502 struct usb_serial *serial = port->serial;
503 int request_unthrottle = 0;
504 int rc = 0;
505 struct keyspan_pda_private *priv;
506
507 priv = usb_get_serial_port_data(port);
508 /* guess how much room is left in the device's ring buffer, and if we
509 want to send more than that, check first, updating our notion of
510 what is left. If our write will result in no room left, ask the
511 device to give us an interrupt when the room available rises above
512 a threshold, and hold off all writers (eventually, those using
513 select() or poll() too) until we receive that unthrottle interrupt.
514 Block if we can't write anything at all, otherwise write as much as
515 we can. */
516 dbg("keyspan_pda_write(%d)",count);
517 if (count == 0) {
518 dbg(" write request of 0 bytes");
519 return (0);
520 }
521
522 /* we might block because of:
523 the TX urb is in-flight (wait until it completes)
524 the device is full (wait until it says there is room)
525 */
526 spin_lock_bh(&port->lock);
527 if (port->write_urb_busy || priv->tx_throttled) {
528 spin_unlock_bh(&port->lock);
529 return 0;
530 }
531 port->write_urb_busy = 1;
532 spin_unlock_bh(&port->lock);
533
534 /* At this point the URB is in our control, nobody else can submit it
535 again (the only sudden transition was the one from EINPROGRESS to
536 finished). Also, the tx process is not throttled. So we are
537 ready to write. */
538
539 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
540
541 /* Check if we might overrun the Tx buffer. If so, ask the
542 device how much room it really has. This is done only on
543 scheduler time, since usb_control_msg() sleeps. */
544 if (count > priv->tx_room && !in_interrupt()) {
545 unsigned char room;
546 rc = usb_control_msg(serial->dev,
547 usb_rcvctrlpipe(serial->dev, 0),
548 6, /* write_room */
549 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
550 | USB_DIR_IN,
551 0, /* value: 0 means "remaining room" */
552 0, /* index */
553 &room,
554 1,
555 2000);
556 if (rc < 0) {
557 dbg(" roomquery failed");
558 goto exit;
559 }
560 if (rc == 0) {
561 dbg(" roomquery returned 0 bytes");
562 rc = -EIO; /* device didn't return any data */
563 goto exit;
564 }
565 dbg(" roomquery says %d", room);
566 priv->tx_room = room;
567 }
568 if (count > priv->tx_room) {
569 /* we're about to completely fill the Tx buffer, so
570 we'll be throttled afterwards. */
571 count = priv->tx_room;
572 request_unthrottle = 1;
573 }
574
575 if (count) {
576 /* now transfer data */
577 memcpy (port->write_urb->transfer_buffer, buf, count);
578 /* send the data out the bulk port */
579 port->write_urb->transfer_buffer_length = count;
580
581 priv->tx_room -= count;
582
583 port->write_urb->dev = port->serial->dev;
584 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
585 if (rc) {
586 dbg(" usb_submit_urb(write bulk) failed");
587 goto exit;
588 }
589 }
590 else {
591 /* There wasn't any room left, so we are throttled until
592 the buffer empties a bit */
593 request_unthrottle = 1;
594 }
595
596 if (request_unthrottle) {
597 priv->tx_throttled = 1; /* block writers */
598 schedule_work(&priv->unthrottle_work);
599 }
600
601 rc = count;
602 exit:
603 if (rc < 0)
604 port->write_urb_busy = 0;
605 return rc;
606 }
607
608
609 static void keyspan_pda_write_bulk_callback (struct urb *urb)
610 {
611 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
612 struct keyspan_pda_private *priv;
613
614 port->write_urb_busy = 0;
615 priv = usb_get_serial_port_data(port);
616
617 /* queue up a wakeup at scheduler time */
618 schedule_work(&priv->wakeup_work);
619 }
620
621
622 static int keyspan_pda_write_room (struct usb_serial_port *port)
623 {
624 struct keyspan_pda_private *priv;
625
626 priv = usb_get_serial_port_data(port);
627
628 /* used by n_tty.c for processing of tabs and such. Giving it our
629 conservative guess is probably good enough, but needs testing by
630 running a console through the device. */
631
632 return (priv->tx_room);
633 }
634
635
636 static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
637 {
638 struct keyspan_pda_private *priv;
639
640 priv = usb_get_serial_port_data(port);
641
642 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
643 n_tty.c:normal_poll() ) that we're not writeable. */
644 if (port->write_urb_busy || priv->tx_throttled)
645 return 256;
646 return 0;
647 }
648
649
650 static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
651 {
652 struct usb_serial *serial = port->serial;
653 unsigned char room;
654 int rc = 0;
655 struct keyspan_pda_private *priv;
656
657 /* find out how much room is in the Tx ring */
658 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
659 6, /* write_room */
660 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
661 | USB_DIR_IN,
662 0, /* value */
663 0, /* index */
664 &room,
665 1,
666 2000);
667 if (rc < 0) {
668 dbg("%s - roomquery failed", __FUNCTION__);
669 goto error;
670 }
671 if (rc == 0) {
672 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
673 rc = -EIO;
674 goto error;
675 }
676 priv = usb_get_serial_port_data(port);
677 priv->tx_room = room;
678 priv->tx_throttled = room ? 0 : 1;
679
680 /* the normal serial device seems to always turn on DTR and RTS here,
681 so do the same */
682 if (port->tty->termios->c_cflag & CBAUD)
683 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
684 else
685 keyspan_pda_set_modem_info(serial, 0);
686
687 /*Start reading from the device*/
688 port->interrupt_in_urb->dev = serial->dev;
689 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
690 if (rc) {
691 dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
692 goto error;
693 }
694
695 error:
696 return rc;
697 }
698
699
700 static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
701 {
702 struct usb_serial *serial = port->serial;
703
704 if (serial->dev) {
705 /* the normal serial device seems to always shut off DTR and RTS now */
706 if (port->tty->termios->c_cflag & HUPCL)
707 keyspan_pda_set_modem_info(serial, 0);
708
709 /* shutdown our bulk reads and writes */
710 usb_kill_urb(port->write_urb);
711 usb_kill_urb(port->interrupt_in_urb);
712 }
713 }
714
715
716 /* download the firmware to a "fake" device (pre-renumeration) */
717 static int keyspan_pda_fake_startup (struct usb_serial *serial)
718 {
719 int response;
720 const struct ezusb_hex_record *record = NULL;
721
722 /* download the firmware here ... */
723 response = ezusb_set_reset(serial, 1);
724
725 #ifdef KEYSPAN
726 if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
727 record = &keyspan_pda_firmware[0];
728 #endif
729 #ifdef XIRCOM
730 if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
731 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
732 record = &xircom_pgs_firmware[0];
733 #endif
734 if (record == NULL) {
735 err("%s: unknown vendor, aborting.", __FUNCTION__);
736 return -ENODEV;
737 }
738
739 while(record->address != 0xffff) {
740 response = ezusb_writememory(serial, record->address,
741 (unsigned char *)record->data,
742 record->data_size, 0xa0);
743 if (response < 0) {
744 err("ezusb_writememory failed for Keyspan PDA "
745 "firmware (%d %04X %p %d)",
746 response,
747 record->address, record->data, record->data_size);
748 break;
749 }
750 record++;
751 }
752 /* bring device out of reset. Renumeration will occur in a moment
753 and the new device will bind to the real driver */
754 response = ezusb_set_reset(serial, 0);
755
756 /* we want this device to fail to have a driver assigned to it. */
757 return (1);
758 }
759
760 static int keyspan_pda_startup (struct usb_serial *serial)
761 {
762
763 struct keyspan_pda_private *priv;
764
765 /* allocate the private data structures for all ports. Well, for all
766 one ports. */
767
768 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
769 if (!priv)
770 return (1); /* error */
771 usb_set_serial_port_data(serial->port[0], priv);
772 init_waitqueue_head(&serial->port[0]->write_wait);
773 INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write);
774 INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle);
775 priv->serial = serial;
776 priv->port = serial->port[0];
777 return (0);
778 }
779
780 static void keyspan_pda_shutdown (struct usb_serial *serial)
781 {
782 dbg("%s", __FUNCTION__);
783
784 kfree(usb_get_serial_port_data(serial->port[0]));
785 }
786
787 #ifdef KEYSPAN
788 static struct usb_serial_driver keyspan_pda_fake_device = {
789 .driver = {
790 .owner = THIS_MODULE,
791 .name = "keyspan_pda_pre",
792 },
793 .description = "Keyspan PDA - (prerenumeration)",
794 .usb_driver = &keyspan_pda_driver,
795 .id_table = id_table_fake,
796 .num_interrupt_in = NUM_DONT_CARE,
797 .num_bulk_in = NUM_DONT_CARE,
798 .num_bulk_out = NUM_DONT_CARE,
799 .num_ports = 1,
800 .attach = keyspan_pda_fake_startup,
801 };
802 #endif
803
804 #ifdef XIRCOM
805 static struct usb_serial_driver xircom_pgs_fake_device = {
806 .driver = {
807 .owner = THIS_MODULE,
808 .name = "xircom_no_firm",
809 },
810 .description = "Xircom / Entregra PGS - (prerenumeration)",
811 .usb_driver = &keyspan_pda_driver,
812 .id_table = id_table_fake_xircom,
813 .num_interrupt_in = NUM_DONT_CARE,
814 .num_bulk_in = NUM_DONT_CARE,
815 .num_bulk_out = NUM_DONT_CARE,
816 .num_ports = 1,
817 .attach = keyspan_pda_fake_startup,
818 };
819 #endif
820
821 static struct usb_serial_driver keyspan_pda_device = {
822 .driver = {
823 .owner = THIS_MODULE,
824 .name = "keyspan_pda",
825 },
826 .description = "Keyspan PDA",
827 .usb_driver = &keyspan_pda_driver,
828 .id_table = id_table_std,
829 .num_interrupt_in = 1,
830 .num_bulk_in = 0,
831 .num_bulk_out = 1,
832 .num_ports = 1,
833 .open = keyspan_pda_open,
834 .close = keyspan_pda_close,
835 .write = keyspan_pda_write,
836 .write_room = keyspan_pda_write_room,
837 .write_bulk_callback = keyspan_pda_write_bulk_callback,
838 .read_int_callback = keyspan_pda_rx_interrupt,
839 .chars_in_buffer = keyspan_pda_chars_in_buffer,
840 .throttle = keyspan_pda_rx_throttle,
841 .unthrottle = keyspan_pda_rx_unthrottle,
842 .ioctl = keyspan_pda_ioctl,
843 .set_termios = keyspan_pda_set_termios,
844 .break_ctl = keyspan_pda_break_ctl,
845 .tiocmget = keyspan_pda_tiocmget,
846 .tiocmset = keyspan_pda_tiocmset,
847 .attach = keyspan_pda_startup,
848 .shutdown = keyspan_pda_shutdown,
849 };
850
851
852 static int __init keyspan_pda_init (void)
853 {
854 int retval;
855 retval = usb_serial_register(&keyspan_pda_device);
856 if (retval)
857 goto failed_pda_register;
858 #ifdef KEYSPAN
859 retval = usb_serial_register(&keyspan_pda_fake_device);
860 if (retval)
861 goto failed_pda_fake_register;
862 #endif
863 #ifdef XIRCOM
864 retval = usb_serial_register(&xircom_pgs_fake_device);
865 if (retval)
866 goto failed_xircom_register;
867 #endif
868 retval = usb_register(&keyspan_pda_driver);
869 if (retval)
870 goto failed_usb_register;
871 info(DRIVER_DESC " " DRIVER_VERSION);
872 return 0;
873 failed_usb_register:
874 #ifdef XIRCOM
875 usb_serial_deregister(&xircom_pgs_fake_device);
876 failed_xircom_register:
877 #endif /* XIRCOM */
878 #ifdef KEYSPAN
879 usb_serial_deregister(&keyspan_pda_fake_device);
880 #endif
881 #ifdef KEYSPAN
882 failed_pda_fake_register:
883 #endif
884 usb_serial_deregister(&keyspan_pda_device);
885 failed_pda_register:
886 return retval;
887 }
888
889
890 static void __exit keyspan_pda_exit (void)
891 {
892 usb_deregister (&keyspan_pda_driver);
893 usb_serial_deregister (&keyspan_pda_device);
894 #ifdef KEYSPAN
895 usb_serial_deregister (&keyspan_pda_fake_device);
896 #endif
897 #ifdef XIRCOM
898 usb_serial_deregister (&xircom_pgs_fake_device);
899 #endif
900 }
901
902
903 module_init(keyspan_pda_init);
904 module_exit(keyspan_pda_exit);
905
906 MODULE_AUTHOR( DRIVER_AUTHOR );
907 MODULE_DESCRIPTION( DRIVER_DESC );
908 MODULE_LICENSE("GPL");
909
910 module_param(debug, bool, S_IRUGO | S_IWUSR);
911 MODULE_PARM_DESC(debug, "Debug enabled or not");
912
913
|
This page was automatically generated by the
LXR engine.
|