Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Linux/drivers/usb/serial/keyspan_pda.c

  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
 14  * driver
 15  */
 16 
 17 
 18 #include <linux/kernel.h>
 19 #include <linux/errno.h>
 20 #include <linux/slab.h>
 21 #include <linux/tty.h>
 22 #include <linux/tty_driver.h>
 23 #include <linux/tty_flip.h>
 24 #include <linux/module.h>
 25 #include <linux/spinlock.h>
 26 #include <linux/workqueue.h>
 27 #include <linux/uaccess.h>
 28 #include <linux/usb.h>
 29 #include <linux/usb/serial.h>
 30 #include <linux/usb/ezusb.h>
 31 
 32 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
 33 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
 34         #define KEYSPAN
 35 #else
 36         #undef KEYSPAN
 37 #endif
 38 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
 39         #define XIRCOM
 40 #else
 41         #undef XIRCOM
 42 #endif
 43 
 44 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
 45 #define DRIVER_DESC "USB Keyspan PDA Converter driver"
 46 
 47 struct keyspan_pda_private {
 48         int                     tx_room;
 49         int                     tx_throttled;
 50         struct work_struct                      wakeup_work;
 51         struct work_struct                      unthrottle_work;
 52         struct usb_serial       *serial;
 53         struct usb_serial_port  *port;
 54 };
 55 
 56 
 57 #define KEYSPAN_VENDOR_ID               0x06cd
 58 #define KEYSPAN_PDA_FAKE_ID             0x0103
 59 #define KEYSPAN_PDA_ID                  0x0104 /* no clue */
 60 
 61 /* For Xircom PGSDB9 and older Entregra version of the same device */
 62 #define XIRCOM_VENDOR_ID                0x085a
 63 #define XIRCOM_FAKE_ID                  0x8027
 64 #define ENTREGRA_VENDOR_ID              0x1645
 65 #define ENTREGRA_FAKE_ID                0x8093
 66 
 67 static const struct usb_device_id id_table_combined[] = {
 68 #ifdef KEYSPAN
 69         { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
 70 #endif
 71 #ifdef XIRCOM
 72         { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
 73         { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
 74 #endif
 75         { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
 76         { }                                             /* Terminating entry */
 77 };
 78 
 79 MODULE_DEVICE_TABLE(usb, id_table_combined);
 80 
 81 static const struct usb_device_id id_table_std[] = {
 82         { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
 83         { }                                             /* Terminating entry */
 84 };
 85 
 86 #ifdef KEYSPAN
 87 static const struct usb_device_id id_table_fake[] = {
 88         { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
 89         { }                                             /* Terminating entry */
 90 };
 91 #endif
 92 
 93 #ifdef XIRCOM
 94 static const struct usb_device_id id_table_fake_xircom[] = {
 95         { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
 96         { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
 97         { }
 98 };
 99 #endif
100 
101 static void keyspan_pda_wakeup_write(struct work_struct *work)
102 {
103         struct keyspan_pda_private *priv =
104                 container_of(work, struct keyspan_pda_private, wakeup_work);
105         struct usb_serial_port *port = priv->port;
106 
107         tty_port_tty_wakeup(&port->port);
108 }
109 
110 static void keyspan_pda_request_unthrottle(struct work_struct *work)
111 {
112         struct keyspan_pda_private *priv =
113                 container_of(work, struct keyspan_pda_private, unthrottle_work);
114         struct usb_serial *serial = priv->serial;
115         int result;
116 
117         /* ask the device to tell us when the tx buffer becomes
118            sufficiently empty */
119         result = usb_control_msg(serial->dev,
120                                  usb_sndctrlpipe(serial->dev, 0),
121                                  7, /* request_unthrottle */
122                                  USB_TYPE_VENDOR | USB_RECIP_INTERFACE
123                                  | USB_DIR_OUT,
124                                  16, /* value: threshold */
125                                  0, /* index */
126                                  NULL,
127                                  0,
128                                  2000);
129         if (result < 0)
130                 dev_dbg(&serial->dev->dev, "%s - error %d from usb_control_msg\n",
131                         __func__, result);
132 }
133 
134 
135 static void keyspan_pda_rx_interrupt(struct urb *urb)
136 {
137         struct usb_serial_port *port = urb->context;
138         unsigned char *data = urb->transfer_buffer;
139         int retval;
140         int status = urb->status;
141         struct keyspan_pda_private *priv;
142         priv = usb_get_serial_port_data(port);
143 
144         switch (status) {
145         case 0:
146                 /* success */
147                 break;
148         case -ECONNRESET:
149         case -ENOENT:
150         case -ESHUTDOWN:
151                 /* this urb is terminated, clean up */
152                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
153                 return;
154         default:
155                 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
156                 goto exit;
157         }
158 
159         /* see if the message is data or a status interrupt */
160         switch (data[0]) {
161         case 0:
162                  /* rest of message is rx data */
163                 if (urb->actual_length) {
164                         tty_insert_flip_string(&port->port, data + 1,
165                                                 urb->actual_length - 1);
166                         tty_flip_buffer_push(&port->port);
167                 }
168                 break;
169         case 1:
170                 /* status interrupt */
171                 dev_dbg(&port->dev, "rx int, d1=%d, d2=%d\n", data[1], data[2]);
172                 switch (data[1]) {
173                 case 1: /* modemline change */
174                         break;
175                 case 2: /* tx unthrottle interrupt */
176                         priv->tx_throttled = 0;
177                         /* queue up a wakeup at scheduler time */
178                         schedule_work(&priv->wakeup_work);
179                         break;
180                 default:
181                         break;
182                 }
183                 break;
184         default:
185                 break;
186         }
187 
188 exit:
189         retval = usb_submit_urb(urb, GFP_ATOMIC);
190         if (retval)
191                 dev_err(&port->dev,
192                         "%s - usb_submit_urb failed with result %d",
193                         __func__, retval);
194 }
195 
196 
197 static void keyspan_pda_rx_throttle(struct tty_struct *tty)
198 {
199         /* stop receiving characters. We just turn off the URB request, and
200            let chars pile up in the device. If we're doing hardware
201            flowcontrol, the device will signal the other end when its buffer
202            fills up. If we're doing XON/XOFF, this would be a good time to
203            send an XOFF, although it might make sense to foist that off
204            upon the device too. */
205         struct usb_serial_port *port = tty->driver_data;
206 
207         usb_kill_urb(port->interrupt_in_urb);
208 }
209 
210 
211 static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
212 {
213         struct usb_serial_port *port = tty->driver_data;
214         /* just restart the receive interrupt URB */
215 
216         if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL))
217                 dev_dbg(&port->dev, "usb_submit_urb(read urb) failed\n");
218 }
219 
220 
221 static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud)
222 {
223         int rc;
224         int bindex;
225 
226         switch (baud) {
227         case 110:
228                 bindex = 0;
229                 break;
230         case 300:
231                 bindex = 1;
232                 break;
233         case 1200:
234                 bindex = 2;
235                 break;
236         case 2400:
237                 bindex = 3;
238                 break;
239         case 4800:
240                 bindex = 4;
241                 break;
242         case 9600:
243                 bindex = 5;
244                 break;
245         case 19200:
246                 bindex = 6;
247                 break;
248         case 38400:
249                 bindex = 7;
250                 break;
251         case 57600:
252                 bindex = 8;
253                 break;
254         case 115200:
255                 bindex = 9;
256                 break;
257         default:
258                 bindex = 5;     /* Default to 9600 */
259                 baud = 9600;
260         }
261 
262         /* rather than figure out how to sleep while waiting for this
263            to complete, I just use the "legacy" API. */
264         rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
265                              0, /* set baud */
266                              USB_TYPE_VENDOR
267                              | USB_RECIP_INTERFACE
268                              | USB_DIR_OUT, /* type */
269                              bindex, /* value */
270                              0, /* index */
271                              NULL, /* &data */
272                              0, /* size */
273                              2000); /* timeout */
274         if (rc < 0)
275                 return 0;
276         return baud;
277 }
278 
279 
280 static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state)
281 {
282         struct usb_serial_port *port = tty->driver_data;
283         struct usb_serial *serial = port->serial;
284         int value;
285         int result;
286 
287         if (break_state == -1)
288                 value = 1; /* start break */
289         else
290                 value = 0; /* clear break */
291         result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
292                         4, /* set break */
293                         USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
294                         value, 0, NULL, 0, 2000);
295         if (result < 0)
296                 dev_dbg(&port->dev, "%s - error %d from usb_control_msg\n",
297                         __func__, result);
298         /* there is something funky about this.. the TCSBRK that 'cu' performs
299            ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
300            seconds apart, but it feels like the break sent isn't as long as it
301            is on /dev/ttyS0 */
302 }
303 
304 
305 static void keyspan_pda_set_termios(struct tty_struct *tty,
306                 struct usb_serial_port *port, struct ktermios *old_termios)
307 {
308         struct usb_serial *serial = port->serial;
309         speed_t speed;
310 
311         /* cflag specifies lots of stuff: number of stop bits, parity, number
312            of data bits, baud. What can the device actually handle?:
313            CSTOPB (1 stop bit or 2)
314            PARENB (parity)
315            CSIZE (5bit .. 8bit)
316            There is minimal hw support for parity (a PSW bit seems to hold the
317            parity of whatever is in the accumulator). The UART either deals
318            with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
319            1 special, stop). So, with firmware changes, we could do:
320            8N1: 10 bit
321            8N2: 11 bit, extra bit always (mark?)
322            8[EOMS]1: 11 bit, extra bit is parity
323            7[EOMS]1: 10 bit, b0/b7 is parity
324            7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
325 
326            HW flow control is dictated by the tty->termios.c_cflags & CRTSCTS
327            bit.
328 
329            For now, just do baud. */
330 
331         speed = tty_get_baud_rate(tty);
332         speed = keyspan_pda_setbaud(serial, speed);
333 
334         if (speed == 0) {
335                 dev_dbg(&port->dev, "can't handle requested baud rate\n");
336                 /* It hasn't changed so.. */
337                 speed = tty_termios_baud_rate(old_termios);
338         }
339         /* Only speed can change so copy the old h/w parameters
340            then encode the new speed */
341         tty_termios_copy_hw(&tty->termios, old_termios);
342         tty_encode_baud_rate(tty, speed, speed);
343 }
344 
345 
346 /* modem control pins: DTR and RTS are outputs and can be controlled.
347    DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
348    read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
349 
350 static int keyspan_pda_get_modem_info(struct usb_serial *serial,
351                                       unsigned char *value)
352 {
353         int rc;
354         u8 *data;
355 
356         data = kmalloc(1, GFP_KERNEL);
357         if (!data)
358                 return -ENOMEM;
359 
360         rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
361                              3, /* get pins */
362                              USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
363                              0, 0, data, 1, 2000);
364         if (rc >= 0)
365                 *value = *data;
366 
367         kfree(data);
368         return rc;
369 }
370 
371 
372 static int keyspan_pda_set_modem_info(struct usb_serial *serial,
373                                       unsigned char value)
374 {
375         int rc;
376         rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
377                              3, /* set pins */
378                              USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
379                              value, 0, NULL, 0, 2000);
380         return rc;
381 }
382 
383 static int keyspan_pda_tiocmget(struct tty_struct *tty)
384 {
385         struct usb_serial_port *port = tty->driver_data;
386         struct usb_serial *serial = port->serial;
387         int rc;
388         unsigned char status;
389         int value;
390 
391         rc = keyspan_pda_get_modem_info(serial, &status);
392         if (rc < 0)
393                 return rc;
394         value =
395                 ((status & (1<<7)) ? TIOCM_DTR : 0) |
396                 ((status & (1<<6)) ? TIOCM_CAR : 0) |
397                 ((status & (1<<5)) ? TIOCM_RNG : 0) |
398                 ((status & (1<<4)) ? TIOCM_DSR : 0) |
399                 ((status & (1<<3)) ? TIOCM_CTS : 0) |
400                 ((status & (1<<2)) ? TIOCM_RTS : 0);
401         return value;
402 }
403 
404 static int keyspan_pda_tiocmset(struct tty_struct *tty,
405                                 unsigned int set, unsigned int clear)
406 {
407         struct usb_serial_port *port = tty->driver_data;
408         struct usb_serial *serial = port->serial;
409         int rc;
410         unsigned char status;
411 
412         rc = keyspan_pda_get_modem_info(serial, &status);
413         if (rc < 0)
414                 return rc;
415 
416         if (set & TIOCM_RTS)
417                 status |= (1<<2);
418         if (set & TIOCM_DTR)
419                 status |= (1<<7);
420 
421         if (clear & TIOCM_RTS)
422                 status &= ~(1<<2);
423         if (clear & TIOCM_DTR)
424                 status &= ~(1<<7);
425         rc = keyspan_pda_set_modem_info(serial, status);
426         return rc;
427 }
428 
429 static int keyspan_pda_write(struct tty_struct *tty,
430         struct usb_serial_port *port, const unsigned char *buf, int count)
431 {
432         struct usb_serial *serial = port->serial;
433         int request_unthrottle = 0;
434         int rc = 0;
435         struct keyspan_pda_private *priv;
436 
437         priv = usb_get_serial_port_data(port);
438         /* guess how much room is left in the device's ring buffer, and if we
439            want to send more than that, check first, updating our notion of
440            what is left. If our write will result in no room left, ask the
441            device to give us an interrupt when the room available rises above
442            a threshold, and hold off all writers (eventually, those using
443            select() or poll() too) until we receive that unthrottle interrupt.
444            Block if we can't write anything at all, otherwise write as much as
445            we can. */
446         if (count == 0) {
447                 dev_dbg(&port->dev, "write request of 0 bytes\n");
448                 return 0;
449         }
450 
451         /* we might block because of:
452            the TX urb is in-flight (wait until it completes)
453            the device is full (wait until it says there is room)
454         */
455         spin_lock_bh(&port->lock);
456         if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled) {
457                 spin_unlock_bh(&port->lock);
458                 return 0;
459         }
460         clear_bit(0, &port->write_urbs_free);
461         spin_unlock_bh(&port->lock);
462 
463         /* At this point the URB is in our control, nobody else can submit it
464            again (the only sudden transition was the one from EINPROGRESS to
465            finished).  Also, the tx process is not throttled. So we are
466            ready to write. */
467 
468         count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
469 
470         /* Check if we might overrun the Tx buffer.   If so, ask the
471            device how much room it really has.  This is done only on
472            scheduler time, since usb_control_msg() sleeps. */
473         if (count > priv->tx_room && !in_interrupt()) {
474                 u8 *room;
475 
476                 room = kmalloc(1, GFP_KERNEL);
477                 if (!room) {
478                         rc = -ENOMEM;
479                         goto exit;
480                 }
481 
482                 rc = usb_control_msg(serial->dev,
483                                      usb_rcvctrlpipe(serial->dev, 0),
484                                      6, /* write_room */
485                                      USB_TYPE_VENDOR | USB_RECIP_INTERFACE
486                                      | USB_DIR_IN,
487                                      0, /* value: 0 means "remaining room" */
488                                      0, /* index */
489                                      room,
490                                      1,
491                                      2000);
492                 if (rc > 0) {
493                         dev_dbg(&port->dev, "roomquery says %d\n", *room);
494                         priv->tx_room = *room;
495                 }
496                 kfree(room);
497                 if (rc < 0) {
498                         dev_dbg(&port->dev, "roomquery failed\n");
499                         goto exit;
500                 }
501                 if (rc == 0) {
502                         dev_dbg(&port->dev, "roomquery returned 0 bytes\n");
503                         rc = -EIO; /* device didn't return any data */
504                         goto exit;
505                 }
506         }
507         if (count > priv->tx_room) {
508                 /* we're about to completely fill the Tx buffer, so
509                    we'll be throttled afterwards. */
510                 count = priv->tx_room;
511                 request_unthrottle = 1;
512         }
513 
514         if (count) {
515                 /* now transfer data */
516                 memcpy(port->write_urb->transfer_buffer, buf, count);
517                 /* send the data out the bulk port */
518                 port->write_urb->transfer_buffer_length = count;
519 
520                 priv->tx_room -= count;
521 
522                 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC);
523                 if (rc) {
524                         dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed\n");
525                         goto exit;
526                 }
527         } else {
528                 /* There wasn't any room left, so we are throttled until
529                    the buffer empties a bit */
530                 request_unthrottle = 1;
531         }
532 
533         if (request_unthrottle) {
534                 priv->tx_throttled = 1; /* block writers */
535                 schedule_work(&priv->unthrottle_work);
536         }
537 
538         rc = count;
539 exit:
540         if (rc < 0)
541                 set_bit(0, &port->write_urbs_free);
542         return rc;
543 }
544 
545 
546 static void keyspan_pda_write_bulk_callback(struct urb *urb)
547 {
548         struct usb_serial_port *port = urb->context;
549         struct keyspan_pda_private *priv;
550 
551         set_bit(0, &port->write_urbs_free);
552         priv = usb_get_serial_port_data(port);
553 
554         /* queue up a wakeup at scheduler time */
555         schedule_work(&priv->wakeup_work);
556 }
557 
558 
559 static int keyspan_pda_write_room(struct tty_struct *tty)
560 {
561         struct usb_serial_port *port = tty->driver_data;
562         struct keyspan_pda_private *priv;
563         priv = usb_get_serial_port_data(port);
564         /* used by n_tty.c for processing of tabs and such. Giving it our
565            conservative guess is probably good enough, but needs testing by
566            running a console through the device. */
567         return priv->tx_room;
568 }
569 
570 
571 static int keyspan_pda_chars_in_buffer(struct tty_struct *tty)
572 {
573         struct usb_serial_port *port = tty->driver_data;
574         struct keyspan_pda_private *priv;
575         unsigned long flags;
576         int ret = 0;
577 
578         priv = usb_get_serial_port_data(port);
579 
580         /* when throttled, return at least WAKEUP_CHARS to tell select() (via
581            n_tty.c:normal_poll() ) that we're not writeable. */
582 
583         spin_lock_irqsave(&port->lock, flags);
584         if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled)
585                 ret = 256;
586         spin_unlock_irqrestore(&port->lock, flags);
587         return ret;
588 }
589 
590 
591 static void keyspan_pda_dtr_rts(struct usb_serial_port *port, int on)
592 {
593         struct usb_serial *serial = port->serial;
594 
595         if (on)
596                 keyspan_pda_set_modem_info(serial, (1 << 7) | (1 << 2));
597         else
598                 keyspan_pda_set_modem_info(serial, 0);
599 }
600 
601 
602 static int keyspan_pda_open(struct tty_struct *tty,
603                                         struct usb_serial_port *port)
604 {
605         struct usb_serial *serial = port->serial;
606         u8 *room;
607         int rc = 0;
608         struct keyspan_pda_private *priv;
609 
610         /* find out how much room is in the Tx ring */
611         room = kmalloc(1, GFP_KERNEL);
612         if (!room)
613                 return -ENOMEM;
614 
615         rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
616                              6, /* write_room */
617                              USB_TYPE_VENDOR | USB_RECIP_INTERFACE
618                              | USB_DIR_IN,
619                              0, /* value */
620                              0, /* index */
621                              room,
622                              1,
623                              2000);
624         if (rc < 0) {
625                 dev_dbg(&port->dev, "%s - roomquery failed\n", __func__);
626                 goto error;
627         }
628         if (rc == 0) {
629                 dev_dbg(&port->dev, "%s - roomquery returned 0 bytes\n", __func__);
630                 rc = -EIO;
631                 goto error;
632         }
633         priv = usb_get_serial_port_data(port);
634         priv->tx_room = *room;
635         priv->tx_throttled = *room ? 0 : 1;
636 
637         /*Start reading from the device*/
638         rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
639         if (rc) {
640                 dev_dbg(&port->dev, "%s - usb_submit_urb(read int) failed\n", __func__);
641                 goto error;
642         }
643 error:
644         kfree(room);
645         return rc;
646 }
647 static void keyspan_pda_close(struct usb_serial_port *port)
648 {
649         usb_kill_urb(port->write_urb);
650         usb_kill_urb(port->interrupt_in_urb);
651 }
652 
653 
654 /* download the firmware to a "fake" device (pre-renumeration) */
655 static int keyspan_pda_fake_startup(struct usb_serial *serial)
656 {
657         int response;
658         const char *fw_name;
659 
660         /* download the firmware here ... */
661         response = ezusb_fx1_set_reset(serial->dev, 1);
662 
663         if (0) { ; }
664 #ifdef KEYSPAN
665         else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID)
666                 fw_name = "keyspan_pda/keyspan_pda.fw";
667 #endif
668 #ifdef XIRCOM
669         else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) ||
670                  (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID))
671                 fw_name = "keyspan_pda/xircom_pgs.fw";
672 #endif
673         else {
674                 dev_err(&serial->dev->dev, "%s: unknown vendor, aborting.\n",
675                         __func__);
676                 return -ENODEV;
677         }
678 
679         if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) {
680                 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
681                         fw_name);
682                 return -ENOENT;
683         }
684 
685         /* after downloading firmware Renumeration will occur in a
686           moment and the new device will bind to the real driver */
687 
688         /* we want this device to fail to have a driver assigned to it. */
689         return 1;
690 }
691 
692 #ifdef KEYSPAN
693 MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw");
694 #endif
695 #ifdef XIRCOM
696 MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw");
697 #endif
698 
699 static int keyspan_pda_port_probe(struct usb_serial_port *port)
700 {
701 
702         struct keyspan_pda_private *priv;
703 
704         priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
705         if (!priv)
706                 return -ENOMEM;
707 
708         INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write);
709         INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle);
710         priv->serial = port->serial;
711         priv->port = port;
712 
713         usb_set_serial_port_data(port, priv);
714 
715         return 0;
716 }
717 
718 static int keyspan_pda_port_remove(struct usb_serial_port *port)
719 {
720         struct keyspan_pda_private *priv;
721 
722         priv = usb_get_serial_port_data(port);
723         kfree(priv);
724 
725         return 0;
726 }
727 
728 #ifdef KEYSPAN
729 static struct usb_serial_driver keyspan_pda_fake_device = {
730         .driver = {
731                 .owner =        THIS_MODULE,
732                 .name =         "keyspan_pda_pre",
733         },
734         .description =          "Keyspan PDA - (prerenumeration)",
735         .id_table =             id_table_fake,
736         .num_ports =            1,
737         .attach =               keyspan_pda_fake_startup,
738 };
739 #endif
740 
741 #ifdef XIRCOM
742 static struct usb_serial_driver xircom_pgs_fake_device = {
743         .driver = {
744                 .owner =        THIS_MODULE,
745                 .name =         "xircom_no_firm",
746         },
747         .description =          "Xircom / Entregra PGS - (prerenumeration)",
748         .id_table =             id_table_fake_xircom,
749         .num_ports =            1,
750         .attach =               keyspan_pda_fake_startup,
751 };
752 #endif
753 
754 static struct usb_serial_driver keyspan_pda_device = {
755         .driver = {
756                 .owner =        THIS_MODULE,
757                 .name =         "keyspan_pda",
758         },
759         .description =          "Keyspan PDA",
760         .id_table =             id_table_std,
761         .num_ports =            1,
762         .dtr_rts =              keyspan_pda_dtr_rts,
763         .open =                 keyspan_pda_open,
764         .close =                keyspan_pda_close,
765         .write =                keyspan_pda_write,
766         .write_room =           keyspan_pda_write_room,
767         .write_bulk_callback =  keyspan_pda_write_bulk_callback,
768         .read_int_callback =    keyspan_pda_rx_interrupt,
769         .chars_in_buffer =      keyspan_pda_chars_in_buffer,
770         .throttle =             keyspan_pda_rx_throttle,
771         .unthrottle =           keyspan_pda_rx_unthrottle,
772         .set_termios =          keyspan_pda_set_termios,
773         .break_ctl =            keyspan_pda_break_ctl,
774         .tiocmget =             keyspan_pda_tiocmget,
775         .tiocmset =             keyspan_pda_tiocmset,
776         .port_probe =           keyspan_pda_port_probe,
777         .port_remove =          keyspan_pda_port_remove,
778 };
779 
780 static struct usb_serial_driver * const serial_drivers[] = {
781         &keyspan_pda_device,
782 #ifdef KEYSPAN
783         &keyspan_pda_fake_device,
784 #endif
785 #ifdef XIRCOM
786         &xircom_pgs_fake_device,
787 #endif
788         NULL
789 };
790 
791 module_usb_serial_driver(serial_drivers, id_table_combined);
792 
793 MODULE_AUTHOR(DRIVER_AUTHOR);
794 MODULE_DESCRIPTION(DRIVER_DESC);
795 MODULE_LICENSE("GPL");
796 

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