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19#include <linux/kernel.h>
20#include <linux/errno.h>
21#include <linux/slab.h>
22#include <linux/tty.h>
23#include <linux/tty_driver.h>
24#include <linux/tty_flip.h>
25#include <linux/module.h>
26#include <linux/spinlock.h>
27#include <linux/mutex.h>
28#include <linux/uaccess.h>
29#include <asm/termbits.h>
30#include <linux/usb.h>
31#include <linux/serial_reg.h>
32#include <linux/serial.h>
33#include <linux/usb/serial.h>
34#include <linux/usb/ezusb.h>
35#include "whiteheat.h"
36
37#ifndef CMSPAR
38#define CMSPAR 0
39#endif
40
41
42
43
44#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>"
45#define DRIVER_DESC "USB ConnectTech WhiteHEAT driver"
46
47#define CONNECT_TECH_VENDOR_ID 0x0710
48#define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001
49#define CONNECT_TECH_WHITE_HEAT_ID 0x8001
50
51
52
53
54
55
56
57
58static const struct usb_device_id id_table_std[] = {
59 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
60 { }
61};
62
63static const struct usb_device_id id_table_prerenumeration[] = {
64 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
65 { }
66};
67
68static const struct usb_device_id id_table_combined[] = {
69 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
70 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
71 { }
72};
73
74MODULE_DEVICE_TABLE(usb, id_table_combined);
75
76
77
78static int whiteheat_firmware_download(struct usb_serial *serial,
79 const struct usb_device_id *id);
80static int whiteheat_firmware_attach(struct usb_serial *serial);
81
82
83static int whiteheat_attach(struct usb_serial *serial);
84static void whiteheat_release(struct usb_serial *serial);
85static int whiteheat_port_probe(struct usb_serial_port *port);
86static int whiteheat_port_remove(struct usb_serial_port *port);
87static int whiteheat_open(struct tty_struct *tty,
88 struct usb_serial_port *port);
89static void whiteheat_close(struct usb_serial_port *port);
90static int whiteheat_ioctl(struct tty_struct *tty,
91 unsigned int cmd, unsigned long arg);
92static void whiteheat_set_termios(struct tty_struct *tty,
93 struct usb_serial_port *port, struct ktermios *old);
94static int whiteheat_tiocmget(struct tty_struct *tty);
95static int whiteheat_tiocmset(struct tty_struct *tty,
96 unsigned int set, unsigned int clear);
97static void whiteheat_break_ctl(struct tty_struct *tty, int break_state);
98
99static struct usb_serial_driver whiteheat_fake_device = {
100 .driver = {
101 .owner = THIS_MODULE,
102 .name = "whiteheatnofirm",
103 },
104 .description = "Connect Tech - WhiteHEAT - (prerenumeration)",
105 .id_table = id_table_prerenumeration,
106 .num_ports = 1,
107 .probe = whiteheat_firmware_download,
108 .attach = whiteheat_firmware_attach,
109};
110
111static struct usb_serial_driver whiteheat_device = {
112 .driver = {
113 .owner = THIS_MODULE,
114 .name = "whiteheat",
115 },
116 .description = "Connect Tech - WhiteHEAT",
117 .id_table = id_table_std,
118 .num_ports = 4,
119 .num_bulk_in = 5,
120 .num_bulk_out = 5,
121 .attach = whiteheat_attach,
122 .release = whiteheat_release,
123 .port_probe = whiteheat_port_probe,
124 .port_remove = whiteheat_port_remove,
125 .open = whiteheat_open,
126 .close = whiteheat_close,
127 .ioctl = whiteheat_ioctl,
128 .set_termios = whiteheat_set_termios,
129 .break_ctl = whiteheat_break_ctl,
130 .tiocmget = whiteheat_tiocmget,
131 .tiocmset = whiteheat_tiocmset,
132 .throttle = usb_serial_generic_throttle,
133 .unthrottle = usb_serial_generic_unthrottle,
134};
135
136static struct usb_serial_driver * const serial_drivers[] = {
137 &whiteheat_fake_device, &whiteheat_device, NULL
138};
139
140struct whiteheat_command_private {
141 struct mutex mutex;
142 __u8 port_running;
143 __u8 command_finished;
144 wait_queue_head_t wait_command;
145
146
147 __u8 result_buffer[64];
148};
149
150struct whiteheat_private {
151 __u8 mcr;
152};
153
154
155
156static int start_command_port(struct usb_serial *serial);
157static void stop_command_port(struct usb_serial *serial);
158static void command_port_write_callback(struct urb *urb);
159static void command_port_read_callback(struct urb *urb);
160
161static int firm_send_command(struct usb_serial_port *port, __u8 command,
162 __u8 *data, __u8 datasize);
163static int firm_open(struct usb_serial_port *port);
164static int firm_close(struct usb_serial_port *port);
165static void firm_setup_port(struct tty_struct *tty);
166static int firm_set_rts(struct usb_serial_port *port, __u8 onoff);
167static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff);
168static int firm_set_break(struct usb_serial_port *port, __u8 onoff);
169static int firm_purge(struct usb_serial_port *port, __u8 rxtx);
170static int firm_get_dtr_rts(struct usb_serial_port *port);
171static int firm_report_tx_done(struct usb_serial_port *port);
172
173
174#define COMMAND_PORT 4
175#define COMMAND_TIMEOUT (2*HZ)
176#define COMMAND_TIMEOUT_MS 2000
177#define CLOSING_DELAY (30 * HZ)
178
179
180
181
182
183
184
185
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189
190
191
192
193
194
195
196
197static int whiteheat_firmware_download(struct usb_serial *serial,
198 const struct usb_device_id *id)
199{
200 int response;
201
202 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
203 if (response >= 0) {
204 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
205 if (response >= 0)
206 return 0;
207 }
208 return -ENOENT;
209}
210
211
212static int whiteheat_firmware_attach(struct usb_serial *serial)
213{
214
215 return 1;
216}
217
218
219
220
221
222
223static int whiteheat_attach(struct usb_serial *serial)
224{
225 struct usb_serial_port *command_port;
226 struct whiteheat_command_private *command_info;
227 struct whiteheat_hw_info *hw_info;
228 int pipe;
229 int ret;
230 int alen;
231 __u8 *command;
232 __u8 *result;
233
234 command_port = serial->port[COMMAND_PORT];
235
236 pipe = usb_sndbulkpipe(serial->dev,
237 command_port->bulk_out_endpointAddress);
238 command = kmalloc(2, GFP_KERNEL);
239 if (!command)
240 goto no_command_buffer;
241 command[0] = WHITEHEAT_GET_HW_INFO;
242 command[1] = 0;
243
244 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL);
245 if (!result)
246 goto no_result_buffer;
247
248
249
250
251
252 usb_clear_halt(serial->dev, pipe);
253 ret = usb_bulk_msg(serial->dev, pipe, command, 2,
254 &alen, COMMAND_TIMEOUT_MS);
255 if (ret) {
256 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
257 serial->type->description, ret);
258 goto no_firmware;
259 } else if (alen != 2) {
260 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
261 serial->type->description, alen);
262 goto no_firmware;
263 }
264
265 pipe = usb_rcvbulkpipe(serial->dev,
266 command_port->bulk_in_endpointAddress);
267
268 usb_clear_halt(serial->dev, pipe);
269 ret = usb_bulk_msg(serial->dev, pipe, result,
270 sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS);
271 if (ret) {
272 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
273 serial->type->description, ret);
274 goto no_firmware;
275 } else if (alen != sizeof(*hw_info) + 1) {
276 dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n",
277 serial->type->description, alen);
278 goto no_firmware;
279 } else if (result[0] != command[0]) {
280 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
281 serial->type->description, result[0]);
282 goto no_firmware;
283 }
284
285 hw_info = (struct whiteheat_hw_info *)&result[1];
286
287 dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n",
288 serial->type->description,
289 hw_info->sw_major_rev, hw_info->sw_minor_rev);
290
291 command_info = kmalloc(sizeof(struct whiteheat_command_private),
292 GFP_KERNEL);
293 if (!command_info)
294 goto no_command_private;
295
296 mutex_init(&command_info->mutex);
297 command_info->port_running = 0;
298 init_waitqueue_head(&command_info->wait_command);
299 usb_set_serial_port_data(command_port, command_info);
300 command_port->write_urb->complete = command_port_write_callback;
301 command_port->read_urb->complete = command_port_read_callback;
302 kfree(result);
303 kfree(command);
304
305 return 0;
306
307no_firmware:
308
309 dev_err(&serial->dev->dev,
310 "%s: Unable to retrieve firmware version, try replugging\n",
311 serial->type->description);
312 dev_err(&serial->dev->dev,
313 "%s: If the firmware is not running (status led not blinking)\n",
314 serial->type->description);
315 dev_err(&serial->dev->dev,
316 "%s: please contact support@connecttech.com\n",
317 serial->type->description);
318 kfree(result);
319 kfree(command);
320 return -ENODEV;
321
322no_command_private:
323 kfree(result);
324no_result_buffer:
325 kfree(command);
326no_command_buffer:
327 return -ENOMEM;
328}
329
330static void whiteheat_release(struct usb_serial *serial)
331{
332 struct usb_serial_port *command_port;
333
334
335 command_port = serial->port[COMMAND_PORT];
336 kfree(usb_get_serial_port_data(command_port));
337}
338
339static int whiteheat_port_probe(struct usb_serial_port *port)
340{
341 struct whiteheat_private *info;
342
343 info = kzalloc(sizeof(*info), GFP_KERNEL);
344 if (!info)
345 return -ENOMEM;
346
347 usb_set_serial_port_data(port, info);
348
349 return 0;
350}
351
352static int whiteheat_port_remove(struct usb_serial_port *port)
353{
354 struct whiteheat_private *info;
355
356 info = usb_get_serial_port_data(port);
357 kfree(info);
358
359 return 0;
360}
361
362static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
363{
364 int retval;
365
366 retval = start_command_port(port->serial);
367 if (retval)
368 goto exit;
369
370
371 retval = firm_open(port);
372 if (retval) {
373 stop_command_port(port->serial);
374 goto exit;
375 }
376
377 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);
378 if (retval) {
379 firm_close(port);
380 stop_command_port(port->serial);
381 goto exit;
382 }
383
384 if (tty)
385 firm_setup_port(tty);
386
387
388 usb_clear_halt(port->serial->dev, port->read_urb->pipe);
389 usb_clear_halt(port->serial->dev, port->write_urb->pipe);
390
391 retval = usb_serial_generic_open(tty, port);
392 if (retval) {
393 firm_close(port);
394 stop_command_port(port->serial);
395 goto exit;
396 }
397exit:
398 return retval;
399}
400
401
402static void whiteheat_close(struct usb_serial_port *port)
403{
404 firm_report_tx_done(port);
405 firm_close(port);
406
407 usb_serial_generic_close(port);
408
409 stop_command_port(port->serial);
410}
411
412static int whiteheat_tiocmget(struct tty_struct *tty)
413{
414 struct usb_serial_port *port = tty->driver_data;
415 struct whiteheat_private *info = usb_get_serial_port_data(port);
416 unsigned int modem_signals = 0;
417
418 firm_get_dtr_rts(port);
419 if (info->mcr & UART_MCR_DTR)
420 modem_signals |= TIOCM_DTR;
421 if (info->mcr & UART_MCR_RTS)
422 modem_signals |= TIOCM_RTS;
423
424 return modem_signals;
425}
426
427static int whiteheat_tiocmset(struct tty_struct *tty,
428 unsigned int set, unsigned int clear)
429{
430 struct usb_serial_port *port = tty->driver_data;
431 struct whiteheat_private *info = usb_get_serial_port_data(port);
432
433 if (set & TIOCM_RTS)
434 info->mcr |= UART_MCR_RTS;
435 if (set & TIOCM_DTR)
436 info->mcr |= UART_MCR_DTR;
437
438 if (clear & TIOCM_RTS)
439 info->mcr &= ~UART_MCR_RTS;
440 if (clear & TIOCM_DTR)
441 info->mcr &= ~UART_MCR_DTR;
442
443 firm_set_dtr(port, info->mcr & UART_MCR_DTR);
444 firm_set_rts(port, info->mcr & UART_MCR_RTS);
445 return 0;
446}
447
448
449static int whiteheat_ioctl(struct tty_struct *tty,
450 unsigned int cmd, unsigned long arg)
451{
452 struct usb_serial_port *port = tty->driver_data;
453 struct serial_struct serstruct;
454 void __user *user_arg = (void __user *)arg;
455
456 switch (cmd) {
457 case TIOCGSERIAL:
458 memset(&serstruct, 0, sizeof(serstruct));
459 serstruct.type = PORT_16654;
460 serstruct.line = port->minor;
461 serstruct.port = port->port_number;
462 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
463 serstruct.custom_divisor = 0;
464 serstruct.baud_base = 460800;
465 serstruct.close_delay = CLOSING_DELAY;
466 serstruct.closing_wait = CLOSING_DELAY;
467
468 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
469 return -EFAULT;
470 break;
471 default:
472 break;
473 }
474
475 return -ENOIOCTLCMD;
476}
477
478
479static void whiteheat_set_termios(struct tty_struct *tty,
480 struct usb_serial_port *port, struct ktermios *old_termios)
481{
482 firm_setup_port(tty);
483}
484
485static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
486{
487 struct usb_serial_port *port = tty->driver_data;
488 firm_set_break(port, break_state);
489}
490
491
492
493
494
495static void command_port_write_callback(struct urb *urb)
496{
497 int status = urb->status;
498
499 if (status) {
500 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
501 return;
502 }
503}
504
505
506static void command_port_read_callback(struct urb *urb)
507{
508 struct usb_serial_port *command_port = urb->context;
509 struct whiteheat_command_private *command_info;
510 int status = urb->status;
511 unsigned char *data = urb->transfer_buffer;
512 int result;
513
514 command_info = usb_get_serial_port_data(command_port);
515 if (!command_info) {
516 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
517 return;
518 }
519 if (!urb->actual_length) {
520 dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
521 return;
522 }
523 if (status) {
524 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
525 if (status != -ENOENT)
526 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
527 wake_up(&command_info->wait_command);
528 return;
529 }
530
531 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
532
533 if (data[0] == WHITEHEAT_CMD_COMPLETE) {
534 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
535 wake_up(&command_info->wait_command);
536 } else if (data[0] == WHITEHEAT_CMD_FAILURE) {
537 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
538 wake_up(&command_info->wait_command);
539 } else if (data[0] == WHITEHEAT_EVENT) {
540
541
542 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
543 } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
544 (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
545 memcpy(command_info->result_buffer, &data[1],
546 urb->actual_length - 1);
547 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
548 wake_up(&command_info->wait_command);
549 } else
550 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
551
552
553 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
554 if (result)
555 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
556 __func__, result);
557}
558
559
560
561
562
563static int firm_send_command(struct usb_serial_port *port, __u8 command,
564 __u8 *data, __u8 datasize)
565{
566 struct usb_serial_port *command_port;
567 struct whiteheat_command_private *command_info;
568 struct whiteheat_private *info;
569 struct device *dev = &port->dev;
570 __u8 *transfer_buffer;
571 int retval = 0;
572 int t;
573
574 dev_dbg(dev, "%s - command %d\n", __func__, command);
575
576 command_port = port->serial->port[COMMAND_PORT];
577 command_info = usb_get_serial_port_data(command_port);
578 mutex_lock(&command_info->mutex);
579 command_info->command_finished = false;
580
581 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
582 transfer_buffer[0] = command;
583 memcpy(&transfer_buffer[1], data, datasize);
584 command_port->write_urb->transfer_buffer_length = datasize + 1;
585 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
586 if (retval) {
587 dev_dbg(dev, "%s - submit urb failed\n", __func__);
588 goto exit;
589 }
590
591
592 t = wait_event_timeout(command_info->wait_command,
593 (bool)command_info->command_finished, COMMAND_TIMEOUT);
594 if (!t)
595 usb_kill_urb(command_port->write_urb);
596
597 if (command_info->command_finished == false) {
598 dev_dbg(dev, "%s - command timed out.\n", __func__);
599 retval = -ETIMEDOUT;
600 goto exit;
601 }
602
603 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
604 dev_dbg(dev, "%s - command failed.\n", __func__);
605 retval = -EIO;
606 goto exit;
607 }
608
609 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
610 dev_dbg(dev, "%s - command completed.\n", __func__);
611 switch (command) {
612 case WHITEHEAT_GET_DTR_RTS:
613 info = usb_get_serial_port_data(port);
614 memcpy(&info->mcr, command_info->result_buffer,
615 sizeof(struct whiteheat_dr_info));
616 break;
617 }
618 }
619exit:
620 mutex_unlock(&command_info->mutex);
621 return retval;
622}
623
624
625static int firm_open(struct usb_serial_port *port)
626{
627 struct whiteheat_simple open_command;
628
629 open_command.port = port->port_number + 1;
630 return firm_send_command(port, WHITEHEAT_OPEN,
631 (__u8 *)&open_command, sizeof(open_command));
632}
633
634
635static int firm_close(struct usb_serial_port *port)
636{
637 struct whiteheat_simple close_command;
638
639 close_command.port = port->port_number + 1;
640 return firm_send_command(port, WHITEHEAT_CLOSE,
641 (__u8 *)&close_command, sizeof(close_command));
642}
643
644
645static void firm_setup_port(struct tty_struct *tty)
646{
647 struct usb_serial_port *port = tty->driver_data;
648 struct device *dev = &port->dev;
649 struct whiteheat_port_settings port_settings;
650 unsigned int cflag = tty->termios.c_cflag;
651
652 port_settings.port = port->port_number + 1;
653
654
655 switch (cflag & CSIZE) {
656 case CS5: port_settings.bits = 5; break;
657 case CS6: port_settings.bits = 6; break;
658 case CS7: port_settings.bits = 7; break;
659 default:
660 case CS8: port_settings.bits = 8; break;
661 }
662 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits);
663
664
665 if (cflag & PARENB)
666 if (cflag & CMSPAR)
667 if (cflag & PARODD)
668 port_settings.parity = WHITEHEAT_PAR_MARK;
669 else
670 port_settings.parity = WHITEHEAT_PAR_SPACE;
671 else
672 if (cflag & PARODD)
673 port_settings.parity = WHITEHEAT_PAR_ODD;
674 else
675 port_settings.parity = WHITEHEAT_PAR_EVEN;
676 else
677 port_settings.parity = WHITEHEAT_PAR_NONE;
678 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
679
680
681 if (cflag & CSTOPB)
682 port_settings.stop = 2;
683 else
684 port_settings.stop = 1;
685 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop);
686
687
688 if (cflag & CRTSCTS)
689 port_settings.hflow = (WHITEHEAT_HFLOW_CTS |
690 WHITEHEAT_HFLOW_RTS);
691 else
692 port_settings.hflow = WHITEHEAT_HFLOW_NONE;
693 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
694 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "",
695 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "",
696 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "",
697 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : "");
698
699
700 if (I_IXOFF(tty))
701 port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
702 else
703 port_settings.sflow = WHITEHEAT_SFLOW_NONE;
704 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
705
706 port_settings.xon = START_CHAR(tty);
707 port_settings.xoff = STOP_CHAR(tty);
708 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
709
710
711 port_settings.baud = tty_get_baud_rate(tty);
712 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
713
714
715 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud);
716
717 port_settings.lloop = 0;
718
719
720 firm_send_command(port, WHITEHEAT_SETUP_PORT,
721 (__u8 *)&port_settings, sizeof(port_settings));
722}
723
724
725static int firm_set_rts(struct usb_serial_port *port, __u8 onoff)
726{
727 struct whiteheat_set_rdb rts_command;
728
729 rts_command.port = port->port_number + 1;
730 rts_command.state = onoff;
731 return firm_send_command(port, WHITEHEAT_SET_RTS,
732 (__u8 *)&rts_command, sizeof(rts_command));
733}
734
735
736static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff)
737{
738 struct whiteheat_set_rdb dtr_command;
739
740 dtr_command.port = port->port_number + 1;
741 dtr_command.state = onoff;
742 return firm_send_command(port, WHITEHEAT_SET_DTR,
743 (__u8 *)&dtr_command, sizeof(dtr_command));
744}
745
746
747static int firm_set_break(struct usb_serial_port *port, __u8 onoff)
748{
749 struct whiteheat_set_rdb break_command;
750
751 break_command.port = port->port_number + 1;
752 break_command.state = onoff;
753 return firm_send_command(port, WHITEHEAT_SET_BREAK,
754 (__u8 *)&break_command, sizeof(break_command));
755}
756
757
758static int firm_purge(struct usb_serial_port *port, __u8 rxtx)
759{
760 struct whiteheat_purge purge_command;
761
762 purge_command.port = port->port_number + 1;
763 purge_command.what = rxtx;
764 return firm_send_command(port, WHITEHEAT_PURGE,
765 (__u8 *)&purge_command, sizeof(purge_command));
766}
767
768
769static int firm_get_dtr_rts(struct usb_serial_port *port)
770{
771 struct whiteheat_simple get_dr_command;
772
773 get_dr_command.port = port->port_number + 1;
774 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS,
775 (__u8 *)&get_dr_command, sizeof(get_dr_command));
776}
777
778
779static int firm_report_tx_done(struct usb_serial_port *port)
780{
781 struct whiteheat_simple close_command;
782
783 close_command.port = port->port_number + 1;
784 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE,
785 (__u8 *)&close_command, sizeof(close_command));
786}
787
788
789
790
791
792static int start_command_port(struct usb_serial *serial)
793{
794 struct usb_serial_port *command_port;
795 struct whiteheat_command_private *command_info;
796 int retval = 0;
797
798 command_port = serial->port[COMMAND_PORT];
799 command_info = usb_get_serial_port_data(command_port);
800 mutex_lock(&command_info->mutex);
801 if (!command_info->port_running) {
802
803 usb_clear_halt(serial->dev, command_port->read_urb->pipe);
804
805 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
806 if (retval) {
807 dev_err(&serial->dev->dev,
808 "%s - failed submitting read urb, error %d\n",
809 __func__, retval);
810 goto exit;
811 }
812 }
813 command_info->port_running++;
814
815exit:
816 mutex_unlock(&command_info->mutex);
817 return retval;
818}
819
820
821static void stop_command_port(struct usb_serial *serial)
822{
823 struct usb_serial_port *command_port;
824 struct whiteheat_command_private *command_info;
825
826 command_port = serial->port[COMMAND_PORT];
827 command_info = usb_get_serial_port_data(command_port);
828 mutex_lock(&command_info->mutex);
829 command_info->port_running--;
830 if (!command_info->port_running)
831 usb_kill_urb(command_port->read_urb);
832 mutex_unlock(&command_info->mutex);
833}
834
835module_usb_serial_driver(serial_drivers, id_table_combined);
836
837MODULE_AUTHOR(DRIVER_AUTHOR);
838MODULE_DESCRIPTION(DRIVER_DESC);
839MODULE_LICENSE("GPL");
840
841MODULE_FIRMWARE("whiteheat.fw");
842MODULE_FIRMWARE("whiteheat_loader.fw");
843
