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Linux 3.12.39
[linux/fpc-iii.git] / drivers / usb / serial / whiteheat.c
blobcc5a430dc357cb276cd46dff9c7977b0d02f3a4b
1 /*
2 * USB ConnectTech WhiteHEAT driver
3 *
4 * Copyright (C) 2002
5 * Connect Tech Inc.
6 *
7 * Copyright (C) 1999 - 2001
8 * Greg Kroah-Hartman (greg@kroah.com)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * See Documentation/usb/usb-serial.txt for more information on using this
16 * driver
17 */
18
19 #include <linux/kernel.h>
20 #include <linux/errno.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/tty.h>
24 #include <linux/tty_driver.h>
25 #include <linux/tty_flip.h>
26 #include <linux/module.h>
27 #include <linux/spinlock.h>
28 #include <linux/mutex.h>
29 #include <linux/uaccess.h>
30 #include <asm/termbits.h>
31 #include <linux/usb.h>
32 #include <linux/serial_reg.h>
33 #include <linux/serial.h>
34 #include <linux/usb/serial.h>
35 #include <linux/usb/ezusb.h>
36 #include "whiteheat.h" /* WhiteHEAT specific commands */
37
38 #ifndef CMSPAR
39 #define CMSPAR 0
40 #endif
41
42 /*
43 * Version Information
44 */
45 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>"
46 #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver"
47
48 #define CONNECT_TECH_VENDOR_ID 0x0710
49 #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001
50 #define CONNECT_TECH_WHITE_HEAT_ID 0x8001
51
52 /*
53 ID tables for whiteheat are unusual, because we want to different
54 things for different versions of the device. Eventually, this
55 will be doable from a single table. But, for now, we define two
56 separate ID tables, and then a third table that combines them
57 just for the purpose of exporting the autoloading information.
58 */
59 static const struct usb_device_id id_table_std[] = {
60 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
61 { } /* Terminating entry */
62 };
63
64 static const struct usb_device_id id_table_prerenumeration[] = {
65 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
66 { } /* Terminating entry */
67 };
68
69 static const struct usb_device_id id_table_combined[] = {
70 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
71 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
72 { } /* Terminating entry */
73 };
74
75 MODULE_DEVICE_TABLE(usb, id_table_combined);
76
77
78 /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */
79 static int whiteheat_firmware_download(struct usb_serial *serial,
80 const struct usb_device_id *id);
81 static int whiteheat_firmware_attach(struct usb_serial *serial);
82
83 /* function prototypes for the Connect Tech WhiteHEAT serial converter */
84 static int whiteheat_attach(struct usb_serial *serial);
85 static void whiteheat_release(struct usb_serial *serial);
86 static int whiteheat_port_probe(struct usb_serial_port *port);
87 static int whiteheat_port_remove(struct usb_serial_port *port);
88 static int whiteheat_open(struct tty_struct *tty,
89 struct usb_serial_port *port);
90 static void whiteheat_close(struct usb_serial_port *port);
91 static int whiteheat_ioctl(struct tty_struct *tty,
92 unsigned int cmd, unsigned long arg);
93 static void whiteheat_set_termios(struct tty_struct *tty,
94 struct usb_serial_port *port, struct ktermios *old);
95 static int whiteheat_tiocmget(struct tty_struct *tty);
96 static int whiteheat_tiocmset(struct tty_struct *tty,
97 unsigned int set, unsigned int clear);
98 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state);
99
100 static struct usb_serial_driver whiteheat_fake_device = {
101 .driver = {
102 .owner = THIS_MODULE,
103 .name = "whiteheatnofirm",
104 },
105 .description = "Connect Tech - WhiteHEAT - (prerenumeration)",
106 .id_table = id_table_prerenumeration,
107 .num_ports = 1,
108 .probe = whiteheat_firmware_download,
109 .attach = whiteheat_firmware_attach,
110 };
111
112 static struct usb_serial_driver whiteheat_device = {
113 .driver = {
114 .owner = THIS_MODULE,
115 .name = "whiteheat",
116 },
117 .description = "Connect Tech - WhiteHEAT",
118 .id_table = id_table_std,
119 .num_ports = 4,
120 .attach = whiteheat_attach,
121 .release = whiteheat_release,
122 .port_probe = whiteheat_port_probe,
123 .port_remove = whiteheat_port_remove,
124 .open = whiteheat_open,
125 .close = whiteheat_close,
126 .ioctl = whiteheat_ioctl,
127 .set_termios = whiteheat_set_termios,
128 .break_ctl = whiteheat_break_ctl,
129 .tiocmget = whiteheat_tiocmget,
130 .tiocmset = whiteheat_tiocmset,
131 .throttle = usb_serial_generic_throttle,
132 .unthrottle = usb_serial_generic_unthrottle,
133 };
134
135 static struct usb_serial_driver * const serial_drivers[] = {
136 &whiteheat_fake_device, &whiteheat_device, NULL
137 };
138
139 struct whiteheat_command_private {
140 struct mutex mutex;
141 __u8 port_running;
142 __u8 command_finished;
143 wait_queue_head_t wait_command; /* for handling sleeping whilst
144 waiting for a command to
145 finish */
146 __u8 result_buffer[64];
147 };
148
149 struct whiteheat_private {
150 __u8 mcr; /* FIXME: no locking on mcr */
151 };
152
153
154 /* local function prototypes */
155 static int start_command_port(struct usb_serial *serial);
156 static void stop_command_port(struct usb_serial *serial);
157 static void command_port_write_callback(struct urb *urb);
158 static void command_port_read_callback(struct urb *urb);
159
160 static int firm_send_command(struct usb_serial_port *port, __u8 command,
161 __u8 *data, __u8 datasize);
162 static int firm_open(struct usb_serial_port *port);
163 static int firm_close(struct usb_serial_port *port);
164 static void firm_setup_port(struct tty_struct *tty);
165 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff);
166 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff);
167 static int firm_set_break(struct usb_serial_port *port, __u8 onoff);
168 static int firm_purge(struct usb_serial_port *port, __u8 rxtx);
169 static int firm_get_dtr_rts(struct usb_serial_port *port);
170 static int firm_report_tx_done(struct usb_serial_port *port);
171
172
173 #define COMMAND_PORT 4
174 #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */
175 #define COMMAND_TIMEOUT_MS 2000
176 #define CLOSING_DELAY (30 * HZ)
177
178
179 /*****************************************************************************
180 * Connect Tech's White Heat prerenumeration driver functions
181 *****************************************************************************/
182
183 /* steps to download the firmware to the WhiteHEAT device:
184 - hold the reset (by writing to the reset bit of the CPUCS register)
185 - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
186 - release the reset (by writing to the CPUCS register)
187 - download the WH.HEX file for all addresses greater than 0x1b3f using
188 VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
189 - hold the reset
190 - download the WH.HEX file for all addresses less than 0x1b40 using
191 VENDOR_REQUEST_ANCHOR_LOAD
192 - release the reset
193 - device renumerated itself and comes up as new device id with all
194 firmware download completed.
195 */
196 static int whiteheat_firmware_download(struct usb_serial *serial,
197 const struct usb_device_id *id)
198 {
199 int response;
200
201 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
202 if (response >= 0) {
203 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
204 if (response >= 0)
205 return 0;
206 }
207 return -ENOENT;
208 }
209
210
211 static int whiteheat_firmware_attach(struct usb_serial *serial)
212 {
213 /* We want this device to fail to have a driver assigned to it */
214 return 1;
215 }
216
217
218 /*****************************************************************************
219 * Connect Tech's White Heat serial driver functions
220 *****************************************************************************/
221 static int whiteheat_attach(struct usb_serial *serial)
222 {
223 struct usb_serial_port *command_port;
224 struct whiteheat_command_private *command_info;
225 struct whiteheat_hw_info *hw_info;
226 int pipe;
227 int ret;
228 int alen;
229 __u8 *command;
230 __u8 *result;
231
232 command_port = serial->port[COMMAND_PORT];
233
234 pipe = usb_sndbulkpipe(serial->dev,
235 command_port->bulk_out_endpointAddress);
236 command = kmalloc(2, GFP_KERNEL);
237 if (!command)
238 goto no_command_buffer;
239 command[0] = WHITEHEAT_GET_HW_INFO;
240 command[1] = 0;
241
242 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL);
243 if (!result)
244 goto no_result_buffer;
245 /*
246 * When the module is reloaded the firmware is still there and
247 * the endpoints are still in the usb core unchanged. This is the
248 * unlinking bug in disguise. Same for the call below.
249 */
250 usb_clear_halt(serial->dev, pipe);
251 ret = usb_bulk_msg(serial->dev, pipe, command, 2,
252 &alen, COMMAND_TIMEOUT_MS);
253 if (ret) {
254 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
255 serial->type->description, ret);
256 goto no_firmware;
257 } else if (alen != 2) {
258 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
259 serial->type->description, alen);
260 goto no_firmware;
261 }
262
263 pipe = usb_rcvbulkpipe(serial->dev,
264 command_port->bulk_in_endpointAddress);
265 /* See the comment on the usb_clear_halt() above */
266 usb_clear_halt(serial->dev, pipe);
267 ret = usb_bulk_msg(serial->dev, pipe, result,
268 sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS);
269 if (ret) {
270 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
271 serial->type->description, ret);
272 goto no_firmware;
273 } else if (alen != sizeof(*hw_info) + 1) {
274 dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n",
275 serial->type->description, alen);
276 goto no_firmware;
277 } else if (result[0] != command[0]) {
278 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
279 serial->type->description, result[0]);
280 goto no_firmware;
281 }
282
283 hw_info = (struct whiteheat_hw_info *)&result[1];
284
285 dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n",
286 serial->type->description,
287 hw_info->sw_major_rev, hw_info->sw_minor_rev);
288
289 command_info = kmalloc(sizeof(struct whiteheat_command_private),
290 GFP_KERNEL);
291 if (command_info == NULL) {
292 dev_err(&serial->dev->dev,
293 "%s: Out of memory for port structures\n",
294 serial->type->description);
295 goto no_command_private;
296 }
297
298 mutex_init(&command_info->mutex);
299 command_info->port_running = 0;
300 init_waitqueue_head(&command_info->wait_command);
301 usb_set_serial_port_data(command_port, command_info);
302 command_port->write_urb->complete = command_port_write_callback;
303 command_port->read_urb->complete = command_port_read_callback;
304 kfree(result);
305 kfree(command);
306
307 return 0;
308
309 no_firmware:
310 /* Firmware likely not running */
311 dev_err(&serial->dev->dev,
312 "%s: Unable to retrieve firmware version, try replugging\n",
313 serial->type->description);
314 dev_err(&serial->dev->dev,
315 "%s: If the firmware is not running (status led not blinking)\n",
316 serial->type->description);
317 dev_err(&serial->dev->dev,
318 "%s: please contact support@connecttech.com\n",
319 serial->type->description);
320 kfree(result);
321 kfree(command);
322 return -ENODEV;
323
324 no_command_private:
325 kfree(result);
326 no_result_buffer:
327 kfree(command);
328 no_command_buffer:
329 return -ENOMEM;
330 }
331
332 static void whiteheat_release(struct usb_serial *serial)
333 {
334 struct usb_serial_port *command_port;
335
336 /* free up our private data for our command port */
337 command_port = serial->port[COMMAND_PORT];
338 kfree(usb_get_serial_port_data(command_port));
339 }
340
341 static int whiteheat_port_probe(struct usb_serial_port *port)
342 {
343 struct whiteheat_private *info;
344
345 info = kzalloc(sizeof(*info), GFP_KERNEL);
346 if (!info)
347 return -ENOMEM;
348
349 usb_set_serial_port_data(port, info);
350
351 return 0;
352 }
353
354 static int whiteheat_port_remove(struct usb_serial_port *port)
355 {
356 struct whiteheat_private *info;
357
358 info = usb_get_serial_port_data(port);
359 kfree(info);
360
361 return 0;
362 }
363
364 static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
365 {
366 int retval;
367
368 retval = start_command_port(port->serial);
369 if (retval)
370 goto exit;
371
372 /* send an open port command */
373 retval = firm_open(port);
374 if (retval) {
375 stop_command_port(port->serial);
376 goto exit;
377 }
378
379 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);
380 if (retval) {
381 firm_close(port);
382 stop_command_port(port->serial);
383 goto exit;
384 }
385
386 if (tty)
387 firm_setup_port(tty);
388
389 /* Work around HCD bugs */
390 usb_clear_halt(port->serial->dev, port->read_urb->pipe);
391 usb_clear_halt(port->serial->dev, port->write_urb->pipe);
392
393 retval = usb_serial_generic_open(tty, port);
394 if (retval) {
395 firm_close(port);
396 stop_command_port(port->serial);
397 goto exit;
398 }
399 exit:
400 return retval;
401 }
402
403
404 static void whiteheat_close(struct usb_serial_port *port)
405 {
406 firm_report_tx_done(port);
407 firm_close(port);
408
409 usb_serial_generic_close(port);
410
411 stop_command_port(port->serial);
412 }
413
414 static int whiteheat_tiocmget(struct tty_struct *tty)
415 {
416 struct usb_serial_port *port = tty->driver_data;
417 struct whiteheat_private *info = usb_get_serial_port_data(port);
418 unsigned int modem_signals = 0;
419
420 firm_get_dtr_rts(port);
421 if (info->mcr & UART_MCR_DTR)
422 modem_signals |= TIOCM_DTR;
423 if (info->mcr & UART_MCR_RTS)
424 modem_signals |= TIOCM_RTS;
425
426 return modem_signals;
427 }
428
429 static int whiteheat_tiocmset(struct tty_struct *tty,
430 unsigned int set, unsigned int clear)
431 {
432 struct usb_serial_port *port = tty->driver_data;
433 struct whiteheat_private *info = usb_get_serial_port_data(port);
434
435 if (set & TIOCM_RTS)
436 info->mcr |= UART_MCR_RTS;
437 if (set & TIOCM_DTR)
438 info->mcr |= UART_MCR_DTR;
439
440 if (clear & TIOCM_RTS)
441 info->mcr &= ~UART_MCR_RTS;
442 if (clear & TIOCM_DTR)
443 info->mcr &= ~UART_MCR_DTR;
444
445 firm_set_dtr(port, info->mcr & UART_MCR_DTR);
446 firm_set_rts(port, info->mcr & UART_MCR_RTS);
447 return 0;
448 }
449
450
451 static int whiteheat_ioctl(struct tty_struct *tty,
452 unsigned int cmd, unsigned long arg)
453 {
454 struct usb_serial_port *port = tty->driver_data;
455 struct serial_struct serstruct;
456 void __user *user_arg = (void __user *)arg;
457
458 dev_dbg(&port->dev, "%s - cmd 0x%.4x\n", __func__, cmd);
459
460 switch (cmd) {
461 case TIOCGSERIAL:
462 memset(&serstruct, 0, sizeof(serstruct));
463 serstruct.type = PORT_16654;
464 serstruct.line = port->minor;
465 serstruct.port = port->port_number;
466 serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
467 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
468 serstruct.custom_divisor = 0;
469 serstruct.baud_base = 460800;
470 serstruct.close_delay = CLOSING_DELAY;
471 serstruct.closing_wait = CLOSING_DELAY;
472
473 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
474 return -EFAULT;
475 break;
476 default:
477 break;
478 }
479
480 return -ENOIOCTLCMD;
481 }
482
483
484 static void whiteheat_set_termios(struct tty_struct *tty,
485 struct usb_serial_port *port, struct ktermios *old_termios)
486 {
487 firm_setup_port(tty);
488 }
489
490 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
491 {
492 struct usb_serial_port *port = tty->driver_data;
493 firm_set_break(port, break_state);
494 }
495
496
497 /*****************************************************************************
498 * Connect Tech's White Heat callback routines
499 *****************************************************************************/
500 static void command_port_write_callback(struct urb *urb)
501 {
502 int status = urb->status;
503
504 if (status) {
505 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
506 return;
507 }
508 }
509
510
511 static void command_port_read_callback(struct urb *urb)
512 {
513 struct usb_serial_port *command_port = urb->context;
514 struct whiteheat_command_private *command_info;
515 int status = urb->status;
516 unsigned char *data = urb->transfer_buffer;
517 int result;
518
519 command_info = usb_get_serial_port_data(command_port);
520 if (!command_info) {
521 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
522 return;
523 }
524 if (!urb->actual_length) {
525 dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
526 return;
527 }
528 if (status) {
529 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
530 if (status != -ENOENT)
531 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
532 wake_up(&command_info->wait_command);
533 return;
534 }
535
536 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
537
538 if (data[0] == WHITEHEAT_CMD_COMPLETE) {
539 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
540 wake_up(&command_info->wait_command);
541 } else if (data[0] == WHITEHEAT_CMD_FAILURE) {
542 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
543 wake_up(&command_info->wait_command);
544 } else if (data[0] == WHITEHEAT_EVENT) {
545 /* These are unsolicited reports from the firmware, hence no
546 waiting command to wakeup */
547 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
548 } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
549 (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
550 memcpy(command_info->result_buffer, &data[1],
551 urb->actual_length - 1);
552 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
553 wake_up(&command_info->wait_command);
554 } else
555 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
556
557 /* Continue trying to always read */
558 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
559 if (result)
560 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
561 __func__, result);
562 }
563
564
565 /*****************************************************************************
566 * Connect Tech's White Heat firmware interface
567 *****************************************************************************/
568 static int firm_send_command(struct usb_serial_port *port, __u8 command,
569 __u8 *data, __u8 datasize)
570 {
571 struct usb_serial_port *command_port;
572 struct whiteheat_command_private *command_info;
573 struct whiteheat_private *info;
574 struct device *dev = &port->dev;
575 __u8 *transfer_buffer;
576 int retval = 0;
577 int t;
578
579 dev_dbg(dev, "%s - command %d\n", __func__, command);
580
581 command_port = port->serial->port[COMMAND_PORT];
582 command_info = usb_get_serial_port_data(command_port);
583 mutex_lock(&command_info->mutex);
584 command_info->command_finished = false;
585
586 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
587 transfer_buffer[0] = command;
588 memcpy(&transfer_buffer[1], data, datasize);
589 command_port->write_urb->transfer_buffer_length = datasize + 1;
590 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
591 if (retval) {
592 dev_dbg(dev, "%s - submit urb failed\n", __func__);
593 goto exit;
594 }
595
596 /* wait for the command to complete */
597 t = wait_event_timeout(command_info->wait_command,
598 (bool)command_info->command_finished, COMMAND_TIMEOUT);
599 if (!t)
600 usb_kill_urb(command_port->write_urb);
601
602 if (command_info->command_finished == false) {
603 dev_dbg(dev, "%s - command timed out.\n", __func__);
604 retval = -ETIMEDOUT;
605 goto exit;
606 }
607
608 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
609 dev_dbg(dev, "%s - command failed.\n", __func__);
610 retval = -EIO;
611 goto exit;
612 }
613
614 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
615 dev_dbg(dev, "%s - command completed.\n", __func__);
616 switch (command) {
617 case WHITEHEAT_GET_DTR_RTS:
618 info = usb_get_serial_port_data(port);
619 memcpy(&info->mcr, command_info->result_buffer,
620 sizeof(struct whiteheat_dr_info));
621 break;
622 }
623 }
624 exit:
625 mutex_unlock(&command_info->mutex);
626 return retval;
627 }
628
629
630 static int firm_open(struct usb_serial_port *port)
631 {
632 struct whiteheat_simple open_command;
633
634 open_command.port = port->port_number + 1;
635 return firm_send_command(port, WHITEHEAT_OPEN,
636 (__u8 *)&open_command, sizeof(open_command));
637 }
638
639
640 static int firm_close(struct usb_serial_port *port)
641 {
642 struct whiteheat_simple close_command;
643
644 close_command.port = port->port_number + 1;
645 return firm_send_command(port, WHITEHEAT_CLOSE,
646 (__u8 *)&close_command, sizeof(close_command));
647 }
648
649
650 static void firm_setup_port(struct tty_struct *tty)
651 {
652 struct usb_serial_port *port = tty->driver_data;
653 struct device *dev = &port->dev;
654 struct whiteheat_port_settings port_settings;
655 unsigned int cflag = tty->termios.c_cflag;
656
657 port_settings.port = port->port_number + 1;
658
659 /* get the byte size */
660 switch (cflag & CSIZE) {
661 case CS5: port_settings.bits = 5; break;
662 case CS6: port_settings.bits = 6; break;
663 case CS7: port_settings.bits = 7; break;
664 default:
665 case CS8: port_settings.bits = 8; break;
666 }
667 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits);
668
669 /* determine the parity */
670 if (cflag & PARENB)
671 if (cflag & CMSPAR)
672 if (cflag & PARODD)
673 port_settings.parity = WHITEHEAT_PAR_MARK;
674 else
675 port_settings.parity = WHITEHEAT_PAR_SPACE;
676 else
677 if (cflag & PARODD)
678 port_settings.parity = WHITEHEAT_PAR_ODD;
679 else
680 port_settings.parity = WHITEHEAT_PAR_EVEN;
681 else
682 port_settings.parity = WHITEHEAT_PAR_NONE;
683 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
684
685 /* figure out the stop bits requested */
686 if (cflag & CSTOPB)
687 port_settings.stop = 2;
688 else
689 port_settings.stop = 1;
690 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop);
691
692 /* figure out the flow control settings */
693 if (cflag & CRTSCTS)
694 port_settings.hflow = (WHITEHEAT_HFLOW_CTS |
695 WHITEHEAT_HFLOW_RTS);
696 else
697 port_settings.hflow = WHITEHEAT_HFLOW_NONE;
698 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
699 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "",
700 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "",
701 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "",
702 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : "");
703
704 /* determine software flow control */
705 if (I_IXOFF(tty))
706 port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
707 else
708 port_settings.sflow = WHITEHEAT_SFLOW_NONE;
709 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
710
711 port_settings.xon = START_CHAR(tty);
712 port_settings.xoff = STOP_CHAR(tty);
713 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
714
715 /* get the baud rate wanted */
716 port_settings.baud = tty_get_baud_rate(tty);
717 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
718
719 /* fixme: should set validated settings */
720 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud);
721 /* handle any settings that aren't specified in the tty structure */
722 port_settings.lloop = 0;
723
724 /* now send the message to the device */
725 firm_send_command(port, WHITEHEAT_SETUP_PORT,
726 (__u8 *)&port_settings, sizeof(port_settings));
727 }
728
729
730 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff)
731 {
732 struct whiteheat_set_rdb rts_command;
733
734 rts_command.port = port->port_number + 1;
735 rts_command.state = onoff;
736 return firm_send_command(port, WHITEHEAT_SET_RTS,
737 (__u8 *)&rts_command, sizeof(rts_command));
738 }
739
740
741 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff)
742 {
743 struct whiteheat_set_rdb dtr_command;
744
745 dtr_command.port = port->port_number + 1;
746 dtr_command.state = onoff;
747 return firm_send_command(port, WHITEHEAT_SET_DTR,
748 (__u8 *)&dtr_command, sizeof(dtr_command));
749 }
750
751
752 static int firm_set_break(struct usb_serial_port *port, __u8 onoff)
753 {
754 struct whiteheat_set_rdb break_command;
755
756 break_command.port = port->port_number + 1;
757 break_command.state = onoff;
758 return firm_send_command(port, WHITEHEAT_SET_BREAK,
759 (__u8 *)&break_command, sizeof(break_command));
760 }
761
762
763 static int firm_purge(struct usb_serial_port *port, __u8 rxtx)
764 {
765 struct whiteheat_purge purge_command;
766
767 purge_command.port = port->port_number + 1;
768 purge_command.what = rxtx;
769 return firm_send_command(port, WHITEHEAT_PURGE,
770 (__u8 *)&purge_command, sizeof(purge_command));
771 }
772
773
774 static int firm_get_dtr_rts(struct usb_serial_port *port)
775 {
776 struct whiteheat_simple get_dr_command;
777
778 get_dr_command.port = port->port_number + 1;
779 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS,
780 (__u8 *)&get_dr_command, sizeof(get_dr_command));
781 }
782
783
784 static int firm_report_tx_done(struct usb_serial_port *port)
785 {
786 struct whiteheat_simple close_command;
787
788 close_command.port = port->port_number + 1;
789 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE,
790 (__u8 *)&close_command, sizeof(close_command));
791 }
792
793
794 /*****************************************************************************
795 * Connect Tech's White Heat utility functions
796 *****************************************************************************/
797 static int start_command_port(struct usb_serial *serial)
798 {
799 struct usb_serial_port *command_port;
800 struct whiteheat_command_private *command_info;
801 int retval = 0;
802
803 command_port = serial->port[COMMAND_PORT];
804 command_info = usb_get_serial_port_data(command_port);
805 mutex_lock(&command_info->mutex);
806 if (!command_info->port_running) {
807 /* Work around HCD bugs */
808 usb_clear_halt(serial->dev, command_port->read_urb->pipe);
809
810 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
811 if (retval) {
812 dev_err(&serial->dev->dev,
813 "%s - failed submitting read urb, error %d\n",
814 __func__, retval);
815 goto exit;
816 }
817 }
818 command_info->port_running++;
819
820 exit:
821 mutex_unlock(&command_info->mutex);
822 return retval;
823 }
824
825
826 static void stop_command_port(struct usb_serial *serial)
827 {
828 struct usb_serial_port *command_port;
829 struct whiteheat_command_private *command_info;
830
831 command_port = serial->port[COMMAND_PORT];
832 command_info = usb_get_serial_port_data(command_port);
833 mutex_lock(&command_info->mutex);
834 command_info->port_running--;
835 if (!command_info->port_running)
836 usb_kill_urb(command_port->read_urb);
837 mutex_unlock(&command_info->mutex);
838 }
839
840 module_usb_serial_driver(serial_drivers, id_table_combined);
841
842 MODULE_AUTHOR(DRIVER_AUTHOR);
843 MODULE_DESCRIPTION(DRIVER_DESC);
844 MODULE_LICENSE("GPL");
845
846 MODULE_FIRMWARE("whiteheat.fw");
847 MODULE_FIRMWARE("whiteheat_loader.fw");
Linux with added FPC-III support