Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
kl5kusb105.c
Go to the documentation of this file.
1 /*
2  * KLSI KL5KUSB105 chip RS232 converter driver
3  *
4  * Copyright (C) 2010 Johan Hovold <[email protected]>
5  * Copyright (C) 2001 Utz-Uwe Haus <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * All information about the device was acquired using SniffUSB ans snoopUSB
13  * on Windows98.
14  * It was written out of frustration with the PalmConnect USB Serial adapter
15  * sold by Palm Inc.
16  * Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided
17  * information that was not already available.
18  *
19  * It seems that KLSI bought some silicon-design information from ScanLogic,
20  * whose SL11R processor is at the core of the KL5KUSB chipset from KLSI.
21  * KLSI has firmware available for their devices; it is probable that the
22  * firmware differs from that used by KLSI in their products. If you have an
23  * original KLSI device and can provide some information on it, I would be
24  * most interested in adding support for it here. If you have any information
25  * on the protocol used (or find errors in my reverse-engineered stuff), please
26  * let me know.
27  *
28  * The code was only tested with a PalmConnect USB adapter; if you
29  * are adventurous, try it with any KLSI-based device and let me know how it
30  * breaks so that I can fix it!
31  */
32 
33 /* TODO:
34  * check modem line signals
35  * implement handshaking or decide that we do not support it
36  */
37 
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/init.h>
41 #include <linux/slab.h>
42 #include <linux/tty.h>
43 #include <linux/tty_driver.h>
44 #include <linux/tty_flip.h>
45 #include <linux/module.h>
46 #include <linux/uaccess.h>
47 #include <asm/unaligned.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include "kl5kusb105.h"
51 
52 /*
53  * Version Information
54  */
55 #define DRIVER_VERSION "v0.4"
56 #define DRIVER_AUTHOR "Utz-Uwe Haus <[email protected]>, Johan Hovold <[email protected]>"
57 #define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver"
58 
59 
60 /*
61  * Function prototypes
62  */
63 static int klsi_105_port_probe(struct usb_serial_port *port);
64 static int klsi_105_port_remove(struct usb_serial_port *port);
65 static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port);
66 static void klsi_105_close(struct usb_serial_port *port);
67 static void klsi_105_set_termios(struct tty_struct *tty,
68  struct usb_serial_port *port, struct ktermios *old);
69 static int klsi_105_tiocmget(struct tty_struct *tty);
70 static int klsi_105_tiocmset(struct tty_struct *tty,
71  unsigned int set, unsigned int clear);
72 static void klsi_105_process_read_urb(struct urb *urb);
73 static int klsi_105_prepare_write_buffer(struct usb_serial_port *port,
74  void *dest, size_t size);
75 
76 /*
77  * All of the device info needed for the KLSI converters.
78  */
79 static const struct usb_device_id id_table[] = {
80  { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
81  { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
82  { } /* Terminating entry */
83 };
84 
85 MODULE_DEVICE_TABLE(usb, id_table);
86 
87 static struct usb_serial_driver kl5kusb105d_device = {
88  .driver = {
89  .owner = THIS_MODULE,
90  .name = "kl5kusb105d",
91  },
92  .description = "KL5KUSB105D / PalmConnect",
93  .id_table = id_table,
94  .num_ports = 1,
95  .bulk_out_size = 64,
96  .open = klsi_105_open,
97  .close = klsi_105_close,
98  .set_termios = klsi_105_set_termios,
99  /*.break_ctl = klsi_105_break_ctl,*/
100  .tiocmget = klsi_105_tiocmget,
101  .tiocmset = klsi_105_tiocmset,
102  .port_probe = klsi_105_port_probe,
103  .port_remove = klsi_105_port_remove,
104  .throttle = usb_serial_generic_throttle,
105  .unthrottle = usb_serial_generic_unthrottle,
106  .process_read_urb = klsi_105_process_read_urb,
107  .prepare_write_buffer = klsi_105_prepare_write_buffer,
108 };
109 
110 static struct usb_serial_driver * const serial_drivers[] = {
111  &kl5kusb105d_device, NULL
112 };
113 
114 struct klsi_105_port_settings {
115  __u8 pktlen; /* always 5, it seems */
116  __u8 baudrate;
117  __u8 databits;
118  __u8 unknown1;
119  __u8 unknown2;
120 } __attribute__ ((packed));
121 
122 struct klsi_105_private {
123  struct klsi_105_port_settings cfg;
124  struct ktermios termios;
125  unsigned long line_state; /* modem line settings */
126  spinlock_t lock;
127 };
128 
129 
130 /*
131  * Handle vendor specific USB requests
132  */
133 
134 
135 #define KLSI_TIMEOUT 5000 /* default urb timeout */
136 
137 static int klsi_105_chg_port_settings(struct usb_serial_port *port,
138  struct klsi_105_port_settings *settings)
139 {
140  int rc;
141 
142  rc = usb_control_msg(port->serial->dev,
143  usb_sndctrlpipe(port->serial->dev, 0),
144  KL5KUSB105A_SIO_SET_DATA,
145  USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
146  0, /* value */
147  0, /* index */
148  settings,
149  sizeof(struct klsi_105_port_settings),
150  KLSI_TIMEOUT);
151  if (rc < 0)
152  dev_err(&port->dev,
153  "Change port settings failed (error = %d)\n", rc);
154  dev_info(&port->serial->dev->dev,
155  "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n",
156  settings->pktlen, settings->baudrate, settings->databits,
157  settings->unknown1, settings->unknown2);
158  return rc;
159 }
160 
161 /* translate a 16-bit status value from the device to linux's TIO bits */
162 static unsigned long klsi_105_status2linestate(const __u16 status)
163 {
164  unsigned long res = 0;
165 
166  res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0)
167  | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0)
168  ;
169 
170  return res;
171 }
172 
173 /*
174  * Read line control via vendor command and return result through
175  * *line_state_p
176  */
177 /* It seems that the status buffer has always only 2 bytes length */
178 #define KLSI_STATUSBUF_LEN 2
179 static int klsi_105_get_line_state(struct usb_serial_port *port,
180  unsigned long *line_state_p)
181 {
182  int rc;
183  u8 *status_buf;
184  __u16 status;
185 
186  dev_info(&port->serial->dev->dev, "sending SIO Poll request\n");
187 
188  status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL);
189  if (!status_buf) {
190  dev_err(&port->dev, "%s - out of memory for status buffer.\n",
191  __func__);
192  return -ENOMEM;
193  }
194  status_buf[0] = 0xff;
195  status_buf[1] = 0xff;
196  rc = usb_control_msg(port->serial->dev,
197  usb_rcvctrlpipe(port->serial->dev, 0),
198  KL5KUSB105A_SIO_POLL,
199  USB_TYPE_VENDOR | USB_DIR_IN,
200  0, /* value */
201  0, /* index */
202  status_buf, KLSI_STATUSBUF_LEN,
203  10000
204  );
205  if (rc < 0)
206  dev_err(&port->dev, "Reading line status failed (error = %d)\n",
207  rc);
208  else {
209  status = get_unaligned_le16(status_buf);
210 
211  dev_info(&port->serial->dev->dev, "read status %x %x",
212  status_buf[0], status_buf[1]);
213 
214  *line_state_p = klsi_105_status2linestate(status);
215  }
216 
217  kfree(status_buf);
218  return rc;
219 }
220 
221 
222 /*
223  * Driver's tty interface functions
224  */
225 
226 static int klsi_105_port_probe(struct usb_serial_port *port)
227 {
228  struct klsi_105_private *priv;
229 
230  priv = kmalloc(sizeof(*priv), GFP_KERNEL);
231  if (!priv)
232  return -ENOMEM;
233 
234  /* set initial values for control structures */
235  priv->cfg.pktlen = 5;
236  priv->cfg.baudrate = kl5kusb105a_sio_b9600;
237  priv->cfg.databits = kl5kusb105a_dtb_8;
238  priv->cfg.unknown1 = 0;
239  priv->cfg.unknown2 = 1;
240 
241  priv->line_state = 0;
242 
243  spin_lock_init(&priv->lock);
244 
245  /* priv->termios is left uninitialized until port opening */
246 
247  usb_set_serial_port_data(port, priv);
248 
249  return 0;
250 }
251 
252 static int klsi_105_port_remove(struct usb_serial_port *port)
253 {
254  struct klsi_105_private *priv;
255 
256  priv = usb_get_serial_port_data(port);
257  kfree(priv);
258 
259  return 0;
260 }
261 
262 static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
263 {
264  struct klsi_105_private *priv = usb_get_serial_port_data(port);
265  int retval = 0;
266  int rc;
267  int i;
268  unsigned long line_state;
269  struct klsi_105_port_settings *cfg;
270  unsigned long flags;
271 
272  /* Do a defined restart:
273  * Set up sane default baud rate and send the 'READ_ON'
274  * vendor command.
275  * FIXME: set modem line control (how?)
276  * Then read the modem line control and store values in
277  * priv->line_state.
278  */
279  cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
280  if (!cfg) {
281  dev_err(&port->dev, "%s - out of memory for config buffer.\n",
282  __func__);
283  return -ENOMEM;
284  }
285  cfg->pktlen = 5;
286  cfg->baudrate = kl5kusb105a_sio_b9600;
287  cfg->databits = kl5kusb105a_dtb_8;
288  cfg->unknown1 = 0;
289  cfg->unknown2 = 1;
290  klsi_105_chg_port_settings(port, cfg);
291 
292  /* set up termios structure */
293  spin_lock_irqsave(&priv->lock, flags);
294  priv->termios.c_iflag = tty->termios.c_iflag;
295  priv->termios.c_oflag = tty->termios.c_oflag;
296  priv->termios.c_cflag = tty->termios.c_cflag;
297  priv->termios.c_lflag = tty->termios.c_lflag;
298  for (i = 0; i < NCCS; i++)
299  priv->termios.c_cc[i] = tty->termios.c_cc[i];
300  priv->cfg.pktlen = cfg->pktlen;
301  priv->cfg.baudrate = cfg->baudrate;
302  priv->cfg.databits = cfg->databits;
303  priv->cfg.unknown1 = cfg->unknown1;
304  priv->cfg.unknown2 = cfg->unknown2;
305  spin_unlock_irqrestore(&priv->lock, flags);
306 
307  /* READ_ON and urb submission */
308  rc = usb_serial_generic_open(tty, port);
309  if (rc) {
310  retval = rc;
311  goto exit;
312  }
313 
314  rc = usb_control_msg(port->serial->dev,
315  usb_sndctrlpipe(port->serial->dev, 0),
316  KL5KUSB105A_SIO_CONFIGURE,
317  USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE,
318  KL5KUSB105A_SIO_CONFIGURE_READ_ON,
319  0, /* index */
320  NULL,
321  0,
322  KLSI_TIMEOUT);
323  if (rc < 0) {
324  dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc);
325  retval = rc;
326  } else
327  dev_dbg(&port->dev, "%s - enabled reading\n", __func__);
328 
329  rc = klsi_105_get_line_state(port, &line_state);
330  if (rc >= 0) {
331  spin_lock_irqsave(&priv->lock, flags);
332  priv->line_state = line_state;
333  spin_unlock_irqrestore(&priv->lock, flags);
334  dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state);
335  retval = 0;
336  } else
337  retval = rc;
338 
339 exit:
340  kfree(cfg);
341  return retval;
342 }
343 
344 static void klsi_105_close(struct usb_serial_port *port)
345 {
346  int rc;
347 
348  mutex_lock(&port->serial->disc_mutex);
349  if (!port->serial->disconnected) {
350  /* send READ_OFF */
351  rc = usb_control_msg(port->serial->dev,
352  usb_sndctrlpipe(port->serial->dev, 0),
353  KL5KUSB105A_SIO_CONFIGURE,
354  USB_TYPE_VENDOR | USB_DIR_OUT,
355  KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
356  0, /* index */
357  NULL, 0,
358  KLSI_TIMEOUT);
359  if (rc < 0)
360  dev_err(&port->dev,
361  "Disabling read failed (error = %d)\n", rc);
362  }
363  mutex_unlock(&port->serial->disc_mutex);
364 
365  /* shutdown our bulk reads and writes */
366  usb_serial_generic_close(port);
367 
368  /* wgg - do I need this? I think so. */
369  usb_kill_urb(port->interrupt_in_urb);
370 }
371 
372 /* We need to write a complete 64-byte data block and encode the
373  * number actually sent in the first double-byte, LSB-order. That
374  * leaves at most 62 bytes of payload.
375  */
376 #define KLSI_HDR_LEN 2
377 static int klsi_105_prepare_write_buffer(struct usb_serial_port *port,
378  void *dest, size_t size)
379 {
380  unsigned char *buf = dest;
381  int count;
382 
383  count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size,
384  &port->lock);
385  put_unaligned_le16(count, buf);
386 
387  return count + KLSI_HDR_LEN;
388 }
389 
390 /* The data received is preceded by a length double-byte in LSB-first order.
391  */
392 static void klsi_105_process_read_urb(struct urb *urb)
393 {
394  struct usb_serial_port *port = urb->context;
395  unsigned char *data = urb->transfer_buffer;
396  struct tty_struct *tty;
397  unsigned len;
398 
399  /* empty urbs seem to happen, we ignore them */
400  if (!urb->actual_length)
401  return;
402 
403  if (urb->actual_length <= KLSI_HDR_LEN) {
404  dev_dbg(&port->dev, "%s - malformed packet\n", __func__);
405  return;
406  }
407 
408  tty = tty_port_tty_get(&port->port);
409  if (!tty)
410  return;
411 
412  len = get_unaligned_le16(data);
413  if (len > urb->actual_length - KLSI_HDR_LEN) {
414  dev_dbg(&port->dev, "%s - packet length mismatch\n", __func__);
415  len = urb->actual_length - KLSI_HDR_LEN;
416  }
417 
418  tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len);
419  tty_flip_buffer_push(tty);
420  tty_kref_put(tty);
421 }
422 
423 static void klsi_105_set_termios(struct tty_struct *tty,
424  struct usb_serial_port *port,
425  struct ktermios *old_termios)
426 {
427  struct klsi_105_private *priv = usb_get_serial_port_data(port);
428  struct device *dev = &port->dev;
429  unsigned int iflag = tty->termios.c_iflag;
430  unsigned int old_iflag = old_termios->c_iflag;
431  unsigned int cflag = tty->termios.c_cflag;
432  unsigned int old_cflag = old_termios->c_cflag;
433  struct klsi_105_port_settings *cfg;
434  unsigned long flags;
435  speed_t baud;
436 
437  cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
438  if (!cfg) {
439  dev_err(dev, "%s - out of memory for config buffer.\n", __func__);
440  return;
441  }
442 
443  /* lock while we are modifying the settings */
444  spin_lock_irqsave(&priv->lock, flags);
445 
446  /*
447  * Update baud rate
448  */
449  baud = tty_get_baud_rate(tty);
450 
451  if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
452  /* reassert DTR and (maybe) RTS on transition from B0 */
453  if ((old_cflag & CBAUD) == B0) {
454  dev_dbg(dev, "%s: baud was B0\n", __func__);
455 #if 0
456  priv->control_state |= TIOCM_DTR;
457  /* don't set RTS if using hardware flow control */
458  if (!(old_cflag & CRTSCTS))
459  priv->control_state |= TIOCM_RTS;
460  mct_u232_set_modem_ctrl(serial, priv->control_state);
461 #endif
462  }
463  }
464  switch (baud) {
465  case 0: /* handled below */
466  break;
467  case 1200:
468  priv->cfg.baudrate = kl5kusb105a_sio_b1200;
469  break;
470  case 2400:
471  priv->cfg.baudrate = kl5kusb105a_sio_b2400;
472  break;
473  case 4800:
474  priv->cfg.baudrate = kl5kusb105a_sio_b4800;
475  break;
476  case 9600:
477  priv->cfg.baudrate = kl5kusb105a_sio_b9600;
478  break;
479  case 19200:
480  priv->cfg.baudrate = kl5kusb105a_sio_b19200;
481  break;
482  case 38400:
483  priv->cfg.baudrate = kl5kusb105a_sio_b38400;
484  break;
485  case 57600:
486  priv->cfg.baudrate = kl5kusb105a_sio_b57600;
487  break;
488  case 115200:
489  priv->cfg.baudrate = kl5kusb105a_sio_b115200;
490  break;
491  default:
492  dev_dbg(dev, "KLSI USB->Serial converter: unsupported baudrate request, using default of 9600");
493  priv->cfg.baudrate = kl5kusb105a_sio_b9600;
494  baud = 9600;
495  break;
496  }
497  if ((cflag & CBAUD) == B0) {
498  dev_dbg(dev, "%s: baud is B0\n", __func__);
499  /* Drop RTS and DTR */
500  /* maybe this should be simulated by sending read
501  * disable and read enable messages?
502  */
503  ;
504 #if 0
505  priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
506  mct_u232_set_modem_ctrl(serial, priv->control_state);
507 #endif
508  }
509  tty_encode_baud_rate(tty, baud, baud);
510 
511  if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
512  /* set the number of data bits */
513  switch (cflag & CSIZE) {
514  case CS5:
515  dev_dbg(dev, "%s - 5 bits/byte not supported\n", __func__);
516  spin_unlock_irqrestore(&priv->lock, flags);
517  goto err;
518  case CS6:
519  dev_dbg(dev, "%s - 6 bits/byte not supported\n", __func__);
520  spin_unlock_irqrestore(&priv->lock, flags);
521  goto err;
522  case CS7:
523  priv->cfg.databits = kl5kusb105a_dtb_7;
524  break;
525  case CS8:
526  priv->cfg.databits = kl5kusb105a_dtb_8;
527  break;
528  default:
529  dev_err(dev, "CSIZE was not CS5-CS8, using default of 8\n");
530  priv->cfg.databits = kl5kusb105a_dtb_8;
531  break;
532  }
533  }
534 
535  /*
536  * Update line control register (LCR)
537  */
538  if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))
539  || (cflag & CSTOPB) != (old_cflag & CSTOPB)) {
540  /* Not currently supported */
541  tty->termios.c_cflag &= ~(PARENB|PARODD|CSTOPB);
542 #if 0
543  priv->last_lcr = 0;
544 
545  /* set the parity */
546  if (cflag & PARENB)
547  priv->last_lcr |= (cflag & PARODD) ?
548  MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN;
549  else
550  priv->last_lcr |= MCT_U232_PARITY_NONE;
551 
552  /* set the number of stop bits */
553  priv->last_lcr |= (cflag & CSTOPB) ?
554  MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
555 
556  mct_u232_set_line_ctrl(serial, priv->last_lcr);
557 #endif
558  ;
559  }
560  /*
561  * Set flow control: well, I do not really now how to handle DTR/RTS.
562  * Just do what we have seen with SniffUSB on Win98.
563  */
564  if ((iflag & IXOFF) != (old_iflag & IXOFF)
565  || (iflag & IXON) != (old_iflag & IXON)
566  || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
567  /* Not currently supported */
568  tty->termios.c_cflag &= ~CRTSCTS;
569  /* Drop DTR/RTS if no flow control otherwise assert */
570 #if 0
571  if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
572  priv->control_state |= TIOCM_DTR | TIOCM_RTS;
573  else
574  priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
575  mct_u232_set_modem_ctrl(serial, priv->control_state);
576 #endif
577  ;
578  }
579  memcpy(cfg, &priv->cfg, sizeof(*cfg));
580  spin_unlock_irqrestore(&priv->lock, flags);
581 
582  /* now commit changes to device */
583  klsi_105_chg_port_settings(port, cfg);
584 err:
585  kfree(cfg);
586 }
587 
588 #if 0
589 static void mct_u232_break_ctl(struct tty_struct *tty, int break_state)
590 {
591  struct usb_serial_port *port = tty->driver_data;
592  struct usb_serial *serial = port->serial;
593  struct mct_u232_private *priv =
594  (struct mct_u232_private *)port->private;
595  unsigned char lcr = priv->last_lcr;
596 
597  dev_dbg(&port->dev, "%s - state=%d\n", __func__, break_state);
598 
599  /* LOCKING */
600  if (break_state)
601  lcr |= MCT_U232_SET_BREAK;
602 
603  mct_u232_set_line_ctrl(serial, lcr);
604 }
605 #endif
606 
607 static int klsi_105_tiocmget(struct tty_struct *tty)
608 {
609  struct usb_serial_port *port = tty->driver_data;
610  struct klsi_105_private *priv = usb_get_serial_port_data(port);
611  unsigned long flags;
612  int rc;
613  unsigned long line_state;
614 
615  rc = klsi_105_get_line_state(port, &line_state);
616  if (rc < 0) {
617  dev_err(&port->dev,
618  "Reading line control failed (error = %d)\n", rc);
619  /* better return value? EAGAIN? */
620  return rc;
621  }
622 
623  spin_lock_irqsave(&priv->lock, flags);
624  priv->line_state = line_state;
625  spin_unlock_irqrestore(&priv->lock, flags);
626  dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state);
627  return (int)line_state;
628 }
629 
630 static int klsi_105_tiocmset(struct tty_struct *tty,
631  unsigned int set, unsigned int clear)
632 {
633  int retval = -EINVAL;
634 
635 /* if this ever gets implemented, it should be done something like this:
636  struct usb_serial *serial = port->serial;
637  struct klsi_105_private *priv = usb_get_serial_port_data(port);
638  unsigned long flags;
639  int control;
640 
641  spin_lock_irqsave (&priv->lock, flags);
642  if (set & TIOCM_RTS)
643  priv->control_state |= TIOCM_RTS;
644  if (set & TIOCM_DTR)
645  priv->control_state |= TIOCM_DTR;
646  if (clear & TIOCM_RTS)
647  priv->control_state &= ~TIOCM_RTS;
648  if (clear & TIOCM_DTR)
649  priv->control_state &= ~TIOCM_DTR;
650  control = priv->control_state;
651  spin_unlock_irqrestore (&priv->lock, flags);
652  retval = mct_u232_set_modem_ctrl(serial, control);
653 */
654  return retval;
655 }
656 
657 module_usb_serial_driver(serial_drivers, id_table);
658 
659 MODULE_AUTHOR(DRIVER_AUTHOR);
660 MODULE_DESCRIPTION(DRIVER_DESC);
661 MODULE_LICENSE("GPL");
Generated on Thu Jan 10 2013 14:38:21 for Linux Kernel by   doxygen 1.8.2