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-rw-r--r--drivers/usb/serial/keyspan_pda.c894
1 files changed, 894 insertions, 0 deletions
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
new file mode 100644
index 000000000000..7fd0aa9eccf6
--- /dev/null
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -0,0 +1,894 @@
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/config.h>
70#include <linux/kernel.h>
71#include <linux/errno.h>
72#include <linux/init.h>
73#include <linux/slab.h>
74#include <linux/tty.h>
75#include <linux/tty_driver.h>
76#include <linux/tty_flip.h>
77#include <linux/module.h>
78#include <linux/spinlock.h>
79#include <linux/workqueue.h>
80#include <asm/uaccess.h>
81#include <linux/usb.h>
82
83static int debug;
84
85struct 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#include "usb-serial.h"
112
113/*
114 * Version Information
115 */
116#define DRIVER_VERSION "v1.1"
117#define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
118#define DRIVER_DESC "USB Keyspan PDA Converter driver"
119
120struct keyspan_pda_private {
121 int tx_room;
122 int tx_throttled;
123 struct work_struct wakeup_work;
124 struct work_struct unthrottle_work;
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
138static 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
150MODULE_DEVICE_TABLE (usb, id_table_combined);
151
152static struct usb_driver keyspan_pda_driver = {
153 .owner = THIS_MODULE,
154 .name = "keyspan_pda",
155 .probe = usb_serial_probe,
156 .disconnect = usb_serial_disconnect,
157 .id_table = id_table_combined,
158};
159
160static struct usb_device_id id_table_std [] = {
161 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
162 { } /* Terminating entry */
163};
164
165#ifdef KEYSPAN
166static 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
173static 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
180static void keyspan_pda_wakeup_write( struct usb_serial_port *port )
181{
182
183 struct tty_struct *tty = port->tty;
184
185 /* wake up port processes */
186 wake_up_interruptible( &port->write_wait );
187
188 /* wake up line discipline */
189 tty_wakeup(tty);
190}
191
192static void keyspan_pda_request_unthrottle( struct usb_serial *serial )
193{
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
215static void keyspan_pda_rx_interrupt (struct urb *urb, struct pt_regs *regs)
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 status;
222 struct keyspan_pda_private *priv;
223 priv = usb_get_serial_port_data(port);
224
225 switch (urb->status) {
226 case 0:
227 /* success */
228 break;
229 case -ECONNRESET:
230 case -ENOENT:
231 case -ESHUTDOWN:
232 /* this urb is terminated, clean up */
233 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
234 return;
235 default:
236 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
237 goto exit;
238 }
239
240 /* see if the message is data or a status interrupt */
241 switch (data[0]) {
242 case 0:
243 /* rest of message is rx data */
244 if (urb->actual_length) {
245 for (i = 1; i < urb->actual_length ; ++i) {
246 tty_insert_flip_char(tty, data[i], 0);
247 }
248 tty_flip_buffer_push(tty);
249 }
250 break;
251 case 1:
252 /* status interrupt */
253 dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
254 switch (data[1]) {
255 case 1: /* modemline change */
256 break;
257 case 2: /* tx unthrottle interrupt */
258 priv->tx_throttled = 0;
259 /* queue up a wakeup at scheduler time */
260 schedule_work(&priv->wakeup_work);
261 break;
262 default:
263 break;
264 }
265 break;
266 default:
267 break;
268 }
269
270exit:
271 status = usb_submit_urb (urb, GFP_ATOMIC);
272 if (status)
273 err ("%s - usb_submit_urb failed with result %d",
274 __FUNCTION__, status);
275}
276
277
278static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
279{
280 /* stop receiving characters. We just turn off the URB request, and
281 let chars pile up in the device. If we're doing hardware
282 flowcontrol, the device will signal the other end when its buffer
283 fills up. If we're doing XON/XOFF, this would be a good time to
284 send an XOFF, although it might make sense to foist that off
285 upon the device too. */
286
287 dbg("keyspan_pda_rx_throttle port %d", port->number);
288 usb_kill_urb(port->interrupt_in_urb);
289}
290
291
292static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
293{
294 /* just restart the receive interrupt URB */
295 dbg("keyspan_pda_rx_unthrottle port %d", port->number);
296 port->interrupt_in_urb->dev = port->serial->dev;
297 if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC))
298 dbg(" usb_submit_urb(read urb) failed");
299 return;
300}
301
302
303static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
304{
305 int rc;
306 int bindex;
307
308 switch(baud) {
309 case 110: bindex = 0; break;
310 case 300: bindex = 1; break;
311 case 1200: bindex = 2; break;
312 case 2400: bindex = 3; break;
313 case 4800: bindex = 4; break;
314 case 9600: bindex = 5; break;
315 case 19200: bindex = 6; break;
316 case 38400: bindex = 7; break;
317 case 57600: bindex = 8; break;
318 case 115200: bindex = 9; break;
319 default: return -EINVAL;
320 }
321
322 /* rather than figure out how to sleep while waiting for this
323 to complete, I just use the "legacy" API. */
324 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
325 0, /* set baud */
326 USB_TYPE_VENDOR
327 | USB_RECIP_INTERFACE
328 | USB_DIR_OUT, /* type */
329 bindex, /* value */
330 0, /* index */
331 NULL, /* &data */
332 0, /* size */
333 2000); /* timeout */
334 return(rc);
335}
336
337
338static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
339{
340 struct usb_serial *serial = port->serial;
341 int value;
342 int result;
343
344 if (break_state == -1)
345 value = 1; /* start break */
346 else
347 value = 0; /* clear break */
348 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
349 4, /* set break */
350 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
351 value, 0, NULL, 0, 2000);
352 if (result < 0)
353 dbg("%s - error %d from usb_control_msg",
354 __FUNCTION__, result);
355 /* there is something funky about this.. the TCSBRK that 'cu' performs
356 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
357 seconds apart, but it feels like the break sent isn't as long as it
358 is on /dev/ttyS0 */
359}
360
361
362static void keyspan_pda_set_termios (struct usb_serial_port *port,
363 struct termios *old_termios)
364{
365 struct usb_serial *serial = port->serial;
366 unsigned int cflag = port->tty->termios->c_cflag;
367
368 /* cflag specifies lots of stuff: number of stop bits, parity, number
369 of data bits, baud. What can the device actually handle?:
370 CSTOPB (1 stop bit or 2)
371 PARENB (parity)
372 CSIZE (5bit .. 8bit)
373 There is minimal hw support for parity (a PSW bit seems to hold the
374 parity of whatever is in the accumulator). The UART either deals
375 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
376 1 special, stop). So, with firmware changes, we could do:
377 8N1: 10 bit
378 8N2: 11 bit, extra bit always (mark?)
379 8[EOMS]1: 11 bit, extra bit is parity
380 7[EOMS]1: 10 bit, b0/b7 is parity
381 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
382
383 HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
384 bit.
385
386 For now, just do baud. */
387
388 switch (cflag & CBAUD) {
389 /* we could support more values here, just need to calculate
390 the necessary divisors in the firmware. <asm/termbits.h>
391 has the Bnnn constants. */
392 case B110: keyspan_pda_setbaud(serial, 110); break;
393 case B300: keyspan_pda_setbaud(serial, 300); break;
394 case B1200: keyspan_pda_setbaud(serial, 1200); break;
395 case B2400: keyspan_pda_setbaud(serial, 2400); break;
396 case B4800: keyspan_pda_setbaud(serial, 4800); break;
397 case B9600: keyspan_pda_setbaud(serial, 9600); break;
398 case B19200: keyspan_pda_setbaud(serial, 19200); break;
399 case B38400: keyspan_pda_setbaud(serial, 38400); break;
400 case B57600: keyspan_pda_setbaud(serial, 57600); break;
401 case B115200: keyspan_pda_setbaud(serial, 115200); break;
402 default: dbg("can't handle requested baud rate"); break;
403 }
404}
405
406
407/* modem control pins: DTR and RTS are outputs and can be controlled.
408 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
409 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
410
411static int keyspan_pda_get_modem_info(struct usb_serial *serial,
412 unsigned char *value)
413{
414 int rc;
415 unsigned char data;
416 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
417 3, /* get pins */
418 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
419 0, 0, &data, 1, 2000);
420 if (rc > 0)
421 *value = data;
422 return rc;
423}
424
425
426static int keyspan_pda_set_modem_info(struct usb_serial *serial,
427 unsigned char value)
428{
429 int rc;
430 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
431 3, /* set pins */
432 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
433 value, 0, NULL, 0, 2000);
434 return rc;
435}
436
437static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file)
438{
439 struct usb_serial *serial = port->serial;
440 int rc;
441 unsigned char status;
442 int value;
443
444 rc = keyspan_pda_get_modem_info(serial, &status);
445 if (rc < 0)
446 return rc;
447 value =
448 ((status & (1<<7)) ? TIOCM_DTR : 0) |
449 ((status & (1<<6)) ? TIOCM_CAR : 0) |
450 ((status & (1<<5)) ? TIOCM_RNG : 0) |
451 ((status & (1<<4)) ? TIOCM_DSR : 0) |
452 ((status & (1<<3)) ? TIOCM_CTS : 0) |
453 ((status & (1<<2)) ? TIOCM_RTS : 0);
454 return value;
455}
456
457static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file,
458 unsigned int set, unsigned int clear)
459{
460 struct usb_serial *serial = port->serial;
461 int rc;
462 unsigned char status;
463
464 rc = keyspan_pda_get_modem_info(serial, &status);
465 if (rc < 0)
466 return rc;
467
468 if (set & TIOCM_RTS)
469 status |= (1<<2);
470 if (set & TIOCM_DTR)
471 status |= (1<<7);
472
473 if (clear & TIOCM_RTS)
474 status &= ~(1<<2);
475 if (clear & TIOCM_DTR)
476 status &= ~(1<<7);
477 rc = keyspan_pda_set_modem_info(serial, status);
478 return rc;
479}
480
481static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
482 unsigned int cmd, unsigned long arg)
483{
484 switch (cmd) {
485 case TIOCMIWAIT:
486 /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
487 /* TODO */
488 case TIOCGICOUNT:
489 /* return count of modemline transitions */
490 return 0; /* TODO */
491 }
492
493 return -ENOIOCTLCMD;
494}
495
496static int keyspan_pda_write(struct usb_serial_port *port,
497 const unsigned char *buf, int count)
498{
499 struct usb_serial *serial = port->serial;
500 int request_unthrottle = 0;
501 int rc = 0;
502 struct keyspan_pda_private *priv;
503
504 priv = usb_get_serial_port_data(port);
505 /* guess how much room is left in the device's ring buffer, and if we
506 want to send more than that, check first, updating our notion of
507 what is left. If our write will result in no room left, ask the
508 device to give us an interrupt when the room available rises above
509 a threshold, and hold off all writers (eventually, those using
510 select() or poll() too) until we receive that unthrottle interrupt.
511 Block if we can't write anything at all, otherwise write as much as
512 we can. */
513 dbg("keyspan_pda_write(%d)",count);
514 if (count == 0) {
515 dbg(" write request of 0 bytes");
516 return (0);
517 }
518
519 /* we might block because of:
520 the TX urb is in-flight (wait until it completes)
521 the device is full (wait until it says there is room)
522 */
523 if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) {
524 return( 0 );
525 }
526
527 /* At this point the URB is in our control, nobody else can submit it
528 again (the only sudden transition was the one from EINPROGRESS to
529 finished). Also, the tx process is not throttled. So we are
530 ready to write. */
531
532 count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
533
534 /* Check if we might overrun the Tx buffer. If so, ask the
535 device how much room it really has. This is done only on
536 scheduler time, since usb_control_msg() sleeps. */
537 if (count > priv->tx_room && !in_interrupt()) {
538 unsigned char room;
539 rc = usb_control_msg(serial->dev,
540 usb_rcvctrlpipe(serial->dev, 0),
541 6, /* write_room */
542 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
543 | USB_DIR_IN,
544 0, /* value: 0 means "remaining room" */
545 0, /* index */
546 &room,
547 1,
548 2000);
549 if (rc < 0) {
550 dbg(" roomquery failed");
551 goto exit;
552 }
553 if (rc == 0) {
554 dbg(" roomquery returned 0 bytes");
555 rc = -EIO; /* device didn't return any data */
556 goto exit;
557 }
558 dbg(" roomquery says %d", room);
559 priv->tx_room = room;
560 }
561 if (count > priv->tx_room) {
562 /* we're about to completely fill the Tx buffer, so
563 we'll be throttled afterwards. */
564 count = priv->tx_room;
565 request_unthrottle = 1;
566 }
567
568 if (count) {
569 /* now transfer data */
570 memcpy (port->write_urb->transfer_buffer, buf, count);
571 /* send the data out the bulk port */
572 port->write_urb->transfer_buffer_length = count;
573
574 priv->tx_room -= count;
575
576 port->write_urb->dev = port->serial->dev;
577 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
578 if (rc) {
579 dbg(" usb_submit_urb(write bulk) failed");
580 goto exit;
581 }
582 }
583 else {
584 /* There wasn't any room left, so we are throttled until
585 the buffer empties a bit */
586 request_unthrottle = 1;
587 }
588
589 if (request_unthrottle) {
590 priv->tx_throttled = 1; /* block writers */
591 schedule_work(&priv->unthrottle_work);
592 }
593
594 rc = count;
595exit:
596 return rc;
597}
598
599
600static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
601{
602 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
603 struct keyspan_pda_private *priv;
604
605 priv = usb_get_serial_port_data(port);
606
607 /* queue up a wakeup at scheduler time */
608 schedule_work(&priv->wakeup_work);
609}
610
611
612static int keyspan_pda_write_room (struct usb_serial_port *port)
613{
614 struct keyspan_pda_private *priv;
615
616 priv = usb_get_serial_port_data(port);
617
618 /* used by n_tty.c for processing of tabs and such. Giving it our
619 conservative guess is probably good enough, but needs testing by
620 running a console through the device. */
621
622 return (priv->tx_room);
623}
624
625
626static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
627{
628 struct keyspan_pda_private *priv;
629
630 priv = usb_get_serial_port_data(port);
631
632 /* when throttled, return at least WAKEUP_CHARS to tell select() (via
633 n_tty.c:normal_poll() ) that we're not writeable. */
634 if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled )
635 return 256;
636 return 0;
637}
638
639
640static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
641{
642 struct usb_serial *serial = port->serial;
643 unsigned char room;
644 int rc = 0;
645 struct keyspan_pda_private *priv;
646
647 /* find out how much room is in the Tx ring */
648 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
649 6, /* write_room */
650 USB_TYPE_VENDOR | USB_RECIP_INTERFACE
651 | USB_DIR_IN,
652 0, /* value */
653 0, /* index */
654 &room,
655 1,
656 2000);
657 if (rc < 0) {
658 dbg("%s - roomquery failed", __FUNCTION__);
659 goto error;
660 }
661 if (rc == 0) {
662 dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
663 rc = -EIO;
664 goto error;
665 }
666 priv = usb_get_serial_port_data(port);
667 priv->tx_room = room;
668 priv->tx_throttled = room ? 0 : 1;
669
670 /* the normal serial device seems to always turn on DTR and RTS here,
671 so do the same */
672 if (port->tty->termios->c_cflag & CBAUD)
673 keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
674 else
675 keyspan_pda_set_modem_info(serial, 0);
676
677 /*Start reading from the device*/
678 port->interrupt_in_urb->dev = serial->dev;
679 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
680 if (rc) {
681 dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
682 goto error;
683 }
684
685error:
686 return rc;
687}
688
689
690static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
691{
692 struct usb_serial *serial = port->serial;
693
694 if (serial->dev) {
695 /* the normal serial device seems to always shut off DTR and RTS now */
696 if (port->tty->termios->c_cflag & HUPCL)
697 keyspan_pda_set_modem_info(serial, 0);
698
699 /* shutdown our bulk reads and writes */
700 usb_kill_urb(port->write_urb);
701 usb_kill_urb(port->interrupt_in_urb);
702 }
703}
704
705
706/* download the firmware to a "fake" device (pre-renumeration) */
707static int keyspan_pda_fake_startup (struct usb_serial *serial)
708{
709 int response;
710 const struct ezusb_hex_record *record = NULL;
711
712 /* download the firmware here ... */
713 response = ezusb_set_reset(serial, 1);
714
715#ifdef KEYSPAN
716 if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
717 record = &keyspan_pda_firmware[0];
718#endif
719#ifdef XIRCOM
720 if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
721 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
722 record = &xircom_pgs_firmware[0];
723#endif
724 if (record == NULL) {
725 err("%s: unknown vendor, aborting.", __FUNCTION__);
726 return -ENODEV;
727 }
728
729 while(record->address != 0xffff) {
730 response = ezusb_writememory(serial, record->address,
731 (unsigned char *)record->data,
732 record->data_size, 0xa0);
733 if (response < 0) {
734 err("ezusb_writememory failed for Keyspan PDA "
735 "firmware (%d %04X %p %d)",
736 response,
737 record->address, record->data, record->data_size);
738 break;
739 }
740 record++;
741 }
742 /* bring device out of reset. Renumeration will occur in a moment
743 and the new device will bind to the real driver */
744 response = ezusb_set_reset(serial, 0);
745
746 /* we want this device to fail to have a driver assigned to it. */
747 return (1);
748}
749
750static int keyspan_pda_startup (struct usb_serial *serial)
751{
752
753 struct keyspan_pda_private *priv;
754
755 /* allocate the private data structures for all ports. Well, for all
756 one ports. */
757
758 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
759 if (!priv)
760 return (1); /* error */
761 usb_set_serial_port_data(serial->port[0], priv);
762 init_waitqueue_head(&serial->port[0]->write_wait);
763 INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write,
764 (void *)(serial->port[0]));
765 INIT_WORK(&priv->unthrottle_work,
766 (void *)keyspan_pda_request_unthrottle,
767 (void *)(serial));
768 return (0);
769}
770
771static void keyspan_pda_shutdown (struct usb_serial *serial)
772{
773 dbg("%s", __FUNCTION__);
774
775 kfree(usb_get_serial_port_data(serial->port[0]));
776}
777
778#ifdef KEYSPAN
779static struct usb_serial_device_type keyspan_pda_fake_device = {
780 .owner = THIS_MODULE,
781 .name = "Keyspan PDA - (prerenumeration)",
782 .short_name = "keyspan_pda_pre",
783 .id_table = id_table_fake,
784 .num_interrupt_in = NUM_DONT_CARE,
785 .num_bulk_in = NUM_DONT_CARE,
786 .num_bulk_out = NUM_DONT_CARE,
787 .num_ports = 1,
788 .attach = keyspan_pda_fake_startup,
789};
790#endif
791
792#ifdef XIRCOM
793static struct usb_serial_device_type xircom_pgs_fake_device = {
794 .owner = THIS_MODULE,
795 .name = "Xircom / Entregra PGS - (prerenumeration)",
796 .short_name = "xircom_no_firm",
797 .id_table = id_table_fake_xircom,
798 .num_interrupt_in = NUM_DONT_CARE,
799 .num_bulk_in = NUM_DONT_CARE,
800 .num_bulk_out = NUM_DONT_CARE,
801 .num_ports = 1,
802 .attach = keyspan_pda_fake_startup,
803};
804#endif
805
806static struct usb_serial_device_type keyspan_pda_device = {
807 .owner = THIS_MODULE,
808 .name = "Keyspan PDA",
809 .short_name = "keyspan_pda",
810 .id_table = id_table_std,
811 .num_interrupt_in = 1,
812 .num_bulk_in = 0,
813 .num_bulk_out = 1,
814 .num_ports = 1,
815 .open = keyspan_pda_open,
816 .close = keyspan_pda_close,
817 .write = keyspan_pda_write,
818 .write_room = keyspan_pda_write_room,
819 .write_bulk_callback = keyspan_pda_write_bulk_callback,
820 .read_int_callback = keyspan_pda_rx_interrupt,
821 .chars_in_buffer = keyspan_pda_chars_in_buffer,
822 .throttle = keyspan_pda_rx_throttle,
823 .unthrottle = keyspan_pda_rx_unthrottle,
824 .ioctl = keyspan_pda_ioctl,
825 .set_termios = keyspan_pda_set_termios,
826 .break_ctl = keyspan_pda_break_ctl,
827 .tiocmget = keyspan_pda_tiocmget,
828 .tiocmset = keyspan_pda_tiocmset,
829 .attach = keyspan_pda_startup,
830 .shutdown = keyspan_pda_shutdown,
831};
832
833
834static int __init keyspan_pda_init (void)
835{
836 int retval;
837 retval = usb_serial_register(&keyspan_pda_device);
838 if (retval)
839 goto failed_pda_register;
840#ifdef KEYSPAN
841 retval = usb_serial_register(&keyspan_pda_fake_device);
842 if (retval)
843 goto failed_pda_fake_register;
844#endif
845#ifdef XIRCOM
846 retval = usb_serial_register(&xircom_pgs_fake_device);
847 if (retval)
848 goto failed_xircom_register;
849#endif
850 retval = usb_register(&keyspan_pda_driver);
851 if (retval)
852 goto failed_usb_register;
853 info(DRIVER_DESC " " DRIVER_VERSION);
854 return 0;
855failed_usb_register:
856#ifdef XIRCOM
857 usb_serial_deregister(&xircom_pgs_fake_device);
858failed_xircom_register:
859#endif /* XIRCOM */
860#ifdef KEYSPAN
861 usb_serial_deregister(&keyspan_pda_fake_device);
862#endif
863#ifdef KEYSPAN
864failed_pda_fake_register:
865#endif
866 usb_serial_deregister(&keyspan_pda_device);
867failed_pda_register:
868 return retval;
869}
870
871
872static void __exit keyspan_pda_exit (void)
873{
874 usb_deregister (&keyspan_pda_driver);
875 usb_serial_deregister (&keyspan_pda_device);
876#ifdef KEYSPAN
877 usb_serial_deregister (&keyspan_pda_fake_device);
878#endif
879#ifdef XIRCOM
880 usb_serial_deregister (&xircom_pgs_fake_device);
881#endif
882}
883
884
885module_init(keyspan_pda_init);
886module_exit(keyspan_pda_exit);
887
888MODULE_AUTHOR( DRIVER_AUTHOR );
889MODULE_DESCRIPTION( DRIVER_DESC );
890MODULE_LICENSE("GPL");
891
892module_param(debug, bool, S_IRUGO | S_IWUSR);
893MODULE_PARM_DESC(debug, "Debug enabled or not");
894
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-14 22:35:05 -0500