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USB: serial: remove debug parameter from usb_serial_debug_data()
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / whiteheat.c
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/firmware.h>
36 #include <linux/ihex.h>
37 #include "whiteheat.h" /* WhiteHEAT specific commands */
38
39 static bool debug;
40
41 #ifndef CMSPAR
42 #define CMSPAR 0
43 #endif
44
45 /*
46 * Version Information
47 */
48 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>"
49 #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver"
50
51 #define CONNECT_TECH_VENDOR_ID 0x0710
52 #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001
53 #define CONNECT_TECH_WHITE_HEAT_ID 0x8001
54
55 /*
56 ID tables for whiteheat are unusual, because we want to different
57 things for different versions of the device. Eventually, this
58 will be doable from a single table. But, for now, we define two
59 separate ID tables, and then a third table that combines them
60 just for the purpose of exporting the autoloading information.
61 */
62 static const struct usb_device_id id_table_std[] = {
63 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
64 { } /* Terminating entry */
65 };
66
67 static const struct usb_device_id id_table_prerenumeration[] = {
68 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
69 { } /* Terminating entry */
70 };
71
72 static const struct usb_device_id id_table_combined[] = {
73 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
74 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
75 { } /* Terminating entry */
76 };
77
78 MODULE_DEVICE_TABLE(usb, id_table_combined);
79
80
81 /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */
82 static int whiteheat_firmware_download(struct usb_serial *serial,
83 const struct usb_device_id *id);
84 static int whiteheat_firmware_attach(struct usb_serial *serial);
85
86 /* function prototypes for the Connect Tech WhiteHEAT serial converter */
87 static int whiteheat_attach(struct usb_serial *serial);
88 static void whiteheat_release(struct usb_serial *serial);
89 static int whiteheat_open(struct tty_struct *tty,
90 struct usb_serial_port *port);
91 static void whiteheat_close(struct usb_serial_port *port);
92 static int whiteheat_ioctl(struct tty_struct *tty,
93 unsigned int cmd, unsigned long arg);
94 static void whiteheat_set_termios(struct tty_struct *tty,
95 struct usb_serial_port *port, struct ktermios *old);
96 static int whiteheat_tiocmget(struct tty_struct *tty);
97 static int whiteheat_tiocmset(struct tty_struct *tty,
98 unsigned int set, unsigned int clear);
99 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state);
100
101 static struct usb_serial_driver whiteheat_fake_device = {
102 .driver = {
103 .owner = THIS_MODULE,
104 .name = "whiteheatnofirm",
105 },
106 .description = "Connect Tech - WhiteHEAT - (prerenumeration)",
107 .id_table = id_table_prerenumeration,
108 .num_ports = 1,
109 .probe = whiteheat_firmware_download,
110 .attach = whiteheat_firmware_attach,
111 };
112
113 static struct usb_serial_driver whiteheat_device = {
114 .driver = {
115 .owner = THIS_MODULE,
116 .name = "whiteheat",
117 },
118 .description = "Connect Tech - WhiteHEAT",
119 .id_table = id_table_std,
120 .num_ports = 4,
121 .attach = whiteheat_attach,
122 .release = whiteheat_release,
123 .open = whiteheat_open,
124 .close = whiteheat_close,
125 .ioctl = whiteheat_ioctl,
126 .set_termios = whiteheat_set_termios,
127 .break_ctl = whiteheat_break_ctl,
128 .tiocmget = whiteheat_tiocmget,
129 .tiocmset = whiteheat_tiocmset,
130 .throttle = usb_serial_generic_throttle,
131 .unthrottle = usb_serial_generic_unthrottle,
132 };
133
134 static struct usb_serial_driver * const serial_drivers[] = {
135 &whiteheat_fake_device, &whiteheat_device, NULL
136 };
137
138 struct whiteheat_command_private {
139 struct mutex mutex;
140 __u8 port_running;
141 __u8 command_finished;
142 wait_queue_head_t wait_command; /* for handling sleeping whilst
143 waiting for a command to
144 finish */
145 __u8 result_buffer[64];
146 };
147
148 struct whiteheat_private {
149 __u8 mcr; /* FIXME: no locking on mcr */
150 };
151
152
153 /* local function prototypes */
154 static int start_command_port(struct usb_serial *serial);
155 static void stop_command_port(struct usb_serial *serial);
156 static void command_port_write_callback(struct urb *urb);
157 static void command_port_read_callback(struct urb *urb);
158
159 static int firm_send_command(struct usb_serial_port *port, __u8 command,
160 __u8 *data, __u8 datasize);
161 static int firm_open(struct usb_serial_port *port);
162 static int firm_close(struct usb_serial_port *port);
163 static void firm_setup_port(struct tty_struct *tty);
164 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff);
165 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff);
166 static int firm_set_break(struct usb_serial_port *port, __u8 onoff);
167 static int firm_purge(struct usb_serial_port *port, __u8 rxtx);
168 static int firm_get_dtr_rts(struct usb_serial_port *port);
169 static int firm_report_tx_done(struct usb_serial_port *port);
170
171
172 #define COMMAND_PORT 4
173 #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */
174 #define COMMAND_TIMEOUT_MS 2000
175 #define CLOSING_DELAY (30 * HZ)
176
177
178 /*****************************************************************************
179 * Connect Tech's White Heat prerenumeration driver functions
180 *****************************************************************************/
181
182 /* steps to download the firmware to the WhiteHEAT device:
183 - hold the reset (by writing to the reset bit of the CPUCS register)
184 - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
185 - release the reset (by writing to the CPUCS register)
186 - download the WH.HEX file for all addresses greater than 0x1b3f using
187 VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
188 - hold the reset
189 - download the WH.HEX file for all addresses less than 0x1b40 using
190 VENDOR_REQUEST_ANCHOR_LOAD
191 - release the reset
192 - device renumerated itself and comes up as new device id with all
193 firmware download completed.
194 */
195 static int whiteheat_firmware_download(struct usb_serial *serial,
196 const struct usb_device_id *id)
197 {
198 int response, ret = -ENOENT;
199 const struct firmware *loader_fw = NULL, *firmware_fw = NULL;
200 const struct ihex_binrec *record;
201
202 if (request_ihex_firmware(&firmware_fw, "whiteheat.fw",
203 &serial->dev->dev)) {
204 dev_err(&serial->dev->dev,
205 "%s - request \"whiteheat.fw\" failed\n", __func__);
206 goto out;
207 }
208 if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw",
209 &serial->dev->dev)) {
210 dev_err(&serial->dev->dev,
211 "%s - request \"whiteheat_loader.fw\" failed\n",
212 __func__);
213 goto out;
214 }
215 ret = 0;
216 response = ezusb_set_reset(serial->dev, 1);
217
218 record = (const struct ihex_binrec *)loader_fw->data;
219 while (record) {
220 response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
221 (unsigned char *)record->data,
222 be16_to_cpu(record->len), 0xa0);
223 if (response < 0) {
224 dev_err(&serial->dev->dev, "%s - ezusb_writememory "
225 "failed for loader (%d %04X %p %d)\n",
226 __func__, response, be32_to_cpu(record->addr),
227 record->data, be16_to_cpu(record->len));
228 break;
229 }
230 record = ihex_next_binrec(record);
231 }
232
233 response = ezusb_set_reset(serial->dev, 0);
234
235 record = (const struct ihex_binrec *)firmware_fw->data;
236 while (record && be32_to_cpu(record->addr) < 0x1b40)
237 record = ihex_next_binrec(record);
238 while (record) {
239 response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
240 (unsigned char *)record->data,
241 be16_to_cpu(record->len), 0xa3);
242 if (response < 0) {
243 dev_err(&serial->dev->dev, "%s - ezusb_writememory "
244 "failed for first firmware step "
245 "(%d %04X %p %d)\n", __func__, response,
246 be32_to_cpu(record->addr), record->data,
247 be16_to_cpu(record->len));
248 break;
249 }
250 ++record;
251 }
252
253 response = ezusb_set_reset(serial->dev, 1);
254
255 record = (const struct ihex_binrec *)firmware_fw->data;
256 while (record && be32_to_cpu(record->addr) < 0x1b40) {
257 response = ezusb_writememory(serial->dev, be32_to_cpu(record->addr),
258 (unsigned char *)record->data,
259 be16_to_cpu(record->len), 0xa0);
260 if (response < 0) {
261 dev_err(&serial->dev->dev, "%s - ezusb_writememory "
262 "failed for second firmware step "
263 "(%d %04X %p %d)\n", __func__, response,
264 be32_to_cpu(record->addr), record->data,
265 be16_to_cpu(record->len));
266 break;
267 }
268 ++record;
269 }
270 ret = 0;
271 response = ezusb_set_reset(serial->dev, 0);
272 out:
273 release_firmware(loader_fw);
274 release_firmware(firmware_fw);
275 return ret;
276 }
277
278
279 static int whiteheat_firmware_attach(struct usb_serial *serial)
280 {
281 /* We want this device to fail to have a driver assigned to it */
282 return 1;
283 }
284
285
286 /*****************************************************************************
287 * Connect Tech's White Heat serial driver functions
288 *****************************************************************************/
289 static int whiteheat_attach(struct usb_serial *serial)
290 {
291 struct usb_serial_port *command_port;
292 struct whiteheat_command_private *command_info;
293 struct usb_serial_port *port;
294 struct whiteheat_private *info;
295 struct whiteheat_hw_info *hw_info;
296 int pipe;
297 int ret;
298 int alen;
299 __u8 *command;
300 __u8 *result;
301 int i;
302
303 command_port = serial->port[COMMAND_PORT];
304
305 pipe = usb_sndbulkpipe(serial->dev,
306 command_port->bulk_out_endpointAddress);
307 command = kmalloc(2, GFP_KERNEL);
308 if (!command)
309 goto no_command_buffer;
310 command[0] = WHITEHEAT_GET_HW_INFO;
311 command[1] = 0;
312
313 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL);
314 if (!result)
315 goto no_result_buffer;
316 /*
317 * When the module is reloaded the firmware is still there and
318 * the endpoints are still in the usb core unchanged. This is the
319 * unlinking bug in disguise. Same for the call below.
320 */
321 usb_clear_halt(serial->dev, pipe);
322 ret = usb_bulk_msg(serial->dev, pipe, command, 2,
323 &alen, COMMAND_TIMEOUT_MS);
324 if (ret) {
325 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
326 serial->type->description, ret);
327 goto no_firmware;
328 } else if (alen != 2) {
329 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
330 serial->type->description, alen);
331 goto no_firmware;
332 }
333
334 pipe = usb_rcvbulkpipe(serial->dev,
335 command_port->bulk_in_endpointAddress);
336 /* See the comment on the usb_clear_halt() above */
337 usb_clear_halt(serial->dev, pipe);
338 ret = usb_bulk_msg(serial->dev, pipe, result,
339 sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS);
340 if (ret) {
341 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
342 serial->type->description, ret);
343 goto no_firmware;
344 } else if (alen != sizeof(*hw_info) + 1) {
345 dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n",
346 serial->type->description, alen);
347 goto no_firmware;
348 } else if (result[0] != command[0]) {
349 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
350 serial->type->description, result[0]);
351 goto no_firmware;
352 }
353
354 hw_info = (struct whiteheat_hw_info *)&result[1];
355
356 dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n",
357 serial->type->description,
358 hw_info->sw_major_rev, hw_info->sw_minor_rev);
359
360 for (i = 0; i < serial->num_ports; i++) {
361 port = serial->port[i];
362
363 info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL);
364 if (info == NULL) {
365 dev_err(&port->dev,
366 "%s: Out of memory for port structures\n",
367 serial->type->description);
368 goto no_private;
369 }
370
371 info->mcr = 0;
372
373 usb_set_serial_port_data(port, info);
374 }
375
376 command_info = kmalloc(sizeof(struct whiteheat_command_private),
377 GFP_KERNEL);
378 if (command_info == NULL) {
379 dev_err(&serial->dev->dev,
380 "%s: Out of memory for port structures\n",
381 serial->type->description);
382 goto no_command_private;
383 }
384
385 mutex_init(&command_info->mutex);
386 command_info->port_running = 0;
387 init_waitqueue_head(&command_info->wait_command);
388 usb_set_serial_port_data(command_port, command_info);
389 command_port->write_urb->complete = command_port_write_callback;
390 command_port->read_urb->complete = command_port_read_callback;
391 kfree(result);
392 kfree(command);
393
394 return 0;
395
396 no_firmware:
397 /* Firmware likely not running */
398 dev_err(&serial->dev->dev,
399 "%s: Unable to retrieve firmware version, try replugging\n",
400 serial->type->description);
401 dev_err(&serial->dev->dev,
402 "%s: If the firmware is not running (status led not blinking)\n",
403 serial->type->description);
404 dev_err(&serial->dev->dev,
405 "%s: please contact support@connecttech.com\n",
406 serial->type->description);
407 kfree(result);
408 return -ENODEV;
409
410 no_command_private:
411 for (i = serial->num_ports - 1; i >= 0; i--) {
412 port = serial->port[i];
413 info = usb_get_serial_port_data(port);
414 kfree(info);
415 no_private:
416 ;
417 }
418 kfree(result);
419 no_result_buffer:
420 kfree(command);
421 no_command_buffer:
422 return -ENOMEM;
423 }
424
425
426 static void whiteheat_release(struct usb_serial *serial)
427 {
428 struct usb_serial_port *command_port;
429 struct whiteheat_private *info;
430 int i;
431
432 /* free up our private data for our command port */
433 command_port = serial->port[COMMAND_PORT];
434 kfree(usb_get_serial_port_data(command_port));
435
436 for (i = 0; i < serial->num_ports; i++) {
437 info = usb_get_serial_port_data(serial->port[i]);
438 kfree(info);
439 }
440 }
441
442 static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
443 {
444 int retval;
445
446 retval = start_command_port(port->serial);
447 if (retval)
448 goto exit;
449
450 /* send an open port command */
451 retval = firm_open(port);
452 if (retval) {
453 stop_command_port(port->serial);
454 goto exit;
455 }
456
457 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);
458 if (retval) {
459 firm_close(port);
460 stop_command_port(port->serial);
461 goto exit;
462 }
463
464 if (tty)
465 firm_setup_port(tty);
466
467 /* Work around HCD bugs */
468 usb_clear_halt(port->serial->dev, port->read_urb->pipe);
469 usb_clear_halt(port->serial->dev, port->write_urb->pipe);
470
471 retval = usb_serial_generic_open(tty, port);
472 if (retval) {
473 firm_close(port);
474 stop_command_port(port->serial);
475 goto exit;
476 }
477 exit:
478 return retval;
479 }
480
481
482 static void whiteheat_close(struct usb_serial_port *port)
483 {
484 firm_report_tx_done(port);
485 firm_close(port);
486
487 usb_serial_generic_close(port);
488
489 stop_command_port(port->serial);
490 }
491
492 static int whiteheat_tiocmget(struct tty_struct *tty)
493 {
494 struct usb_serial_port *port = tty->driver_data;
495 struct whiteheat_private *info = usb_get_serial_port_data(port);
496 unsigned int modem_signals = 0;
497
498 firm_get_dtr_rts(port);
499 if (info->mcr & UART_MCR_DTR)
500 modem_signals |= TIOCM_DTR;
501 if (info->mcr & UART_MCR_RTS)
502 modem_signals |= TIOCM_RTS;
503
504 return modem_signals;
505 }
506
507 static int whiteheat_tiocmset(struct tty_struct *tty,
508 unsigned int set, unsigned int clear)
509 {
510 struct usb_serial_port *port = tty->driver_data;
511 struct whiteheat_private *info = usb_get_serial_port_data(port);
512
513 if (set & TIOCM_RTS)
514 info->mcr |= UART_MCR_RTS;
515 if (set & TIOCM_DTR)
516 info->mcr |= UART_MCR_DTR;
517
518 if (clear & TIOCM_RTS)
519 info->mcr &= ~UART_MCR_RTS;
520 if (clear & TIOCM_DTR)
521 info->mcr &= ~UART_MCR_DTR;
522
523 firm_set_dtr(port, info->mcr & UART_MCR_DTR);
524 firm_set_rts(port, info->mcr & UART_MCR_RTS);
525 return 0;
526 }
527
528
529 static int whiteheat_ioctl(struct tty_struct *tty,
530 unsigned int cmd, unsigned long arg)
531 {
532 struct usb_serial_port *port = tty->driver_data;
533 struct serial_struct serstruct;
534 void __user *user_arg = (void __user *)arg;
535
536 dev_dbg(&port->dev, "%s - cmd 0x%.4x\n", __func__, cmd);
537
538 switch (cmd) {
539 case TIOCGSERIAL:
540 memset(&serstruct, 0, sizeof(serstruct));
541 serstruct.type = PORT_16654;
542 serstruct.line = port->serial->minor;
543 serstruct.port = port->number;
544 serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
545 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
546 serstruct.custom_divisor = 0;
547 serstruct.baud_base = 460800;
548 serstruct.close_delay = CLOSING_DELAY;
549 serstruct.closing_wait = CLOSING_DELAY;
550
551 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
552 return -EFAULT;
553 break;
554 default:
555 break;
556 }
557
558 return -ENOIOCTLCMD;
559 }
560
561
562 static void whiteheat_set_termios(struct tty_struct *tty,
563 struct usb_serial_port *port, struct ktermios *old_termios)
564 {
565 firm_setup_port(tty);
566 }
567
568 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
569 {
570 struct usb_serial_port *port = tty->driver_data;
571 firm_set_break(port, break_state);
572 }
573
574
575 /*****************************************************************************
576 * Connect Tech's White Heat callback routines
577 *****************************************************************************/
578 static void command_port_write_callback(struct urb *urb)
579 {
580 int status = urb->status;
581
582 if (status) {
583 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
584 return;
585 }
586 }
587
588
589 static void command_port_read_callback(struct urb *urb)
590 {
591 struct usb_serial_port *command_port = urb->context;
592 struct whiteheat_command_private *command_info;
593 int status = urb->status;
594 unsigned char *data = urb->transfer_buffer;
595 int result;
596
597 command_info = usb_get_serial_port_data(command_port);
598 if (!command_info) {
599 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
600 return;
601 }
602 if (status) {
603 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
604 if (status != -ENOENT)
605 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
606 wake_up(&command_info->wait_command);
607 return;
608 }
609
610 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
611
612 if (data[0] == WHITEHEAT_CMD_COMPLETE) {
613 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
614 wake_up(&command_info->wait_command);
615 } else if (data[0] == WHITEHEAT_CMD_FAILURE) {
616 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
617 wake_up(&command_info->wait_command);
618 } else if (data[0] == WHITEHEAT_EVENT) {
619 /* These are unsolicited reports from the firmware, hence no
620 waiting command to wakeup */
621 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
622 } else if (data[0] == WHITEHEAT_GET_DTR_RTS) {
623 memcpy(command_info->result_buffer, &data[1],
624 urb->actual_length - 1);
625 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
626 wake_up(&command_info->wait_command);
627 } else
628 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
629
630 /* Continue trying to always read */
631 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
632 if (result)
633 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
634 __func__, result);
635 }
636
637
638 /*****************************************************************************
639 * Connect Tech's White Heat firmware interface
640 *****************************************************************************/
641 static int firm_send_command(struct usb_serial_port *port, __u8 command,
642 __u8 *data, __u8 datasize)
643 {
644 struct usb_serial_port *command_port;
645 struct whiteheat_command_private *command_info;
646 struct whiteheat_private *info;
647 struct device *dev = &port->dev;
648 __u8 *transfer_buffer;
649 int retval = 0;
650 int t;
651
652 dev_dbg(dev, "%s - command %d\n", __func__, command);
653
654 command_port = port->serial->port[COMMAND_PORT];
655 command_info = usb_get_serial_port_data(command_port);
656 mutex_lock(&command_info->mutex);
657 command_info->command_finished = false;
658
659 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
660 transfer_buffer[0] = command;
661 memcpy(&transfer_buffer[1], data, datasize);
662 command_port->write_urb->transfer_buffer_length = datasize + 1;
663 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
664 if (retval) {
665 dev_dbg(dev, "%s - submit urb failed\n", __func__);
666 goto exit;
667 }
668
669 /* wait for the command to complete */
670 t = wait_event_timeout(command_info->wait_command,
671 (bool)command_info->command_finished, COMMAND_TIMEOUT);
672 if (!t)
673 usb_kill_urb(command_port->write_urb);
674
675 if (command_info->command_finished == false) {
676 dev_dbg(dev, "%s - command timed out.\n", __func__);
677 retval = -ETIMEDOUT;
678 goto exit;
679 }
680
681 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
682 dev_dbg(dev, "%s - command failed.\n", __func__);
683 retval = -EIO;
684 goto exit;
685 }
686
687 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
688 dev_dbg(dev, "%s - command completed.\n", __func__);
689 switch (command) {
690 case WHITEHEAT_GET_DTR_RTS:
691 info = usb_get_serial_port_data(port);
692 memcpy(&info->mcr, command_info->result_buffer,
693 sizeof(struct whiteheat_dr_info));
694 break;
695 }
696 }
697 exit:
698 mutex_unlock(&command_info->mutex);
699 return retval;
700 }
701
702
703 static int firm_open(struct usb_serial_port *port)
704 {
705 struct whiteheat_simple open_command;
706
707 open_command.port = port->number - port->serial->minor + 1;
708 return firm_send_command(port, WHITEHEAT_OPEN,
709 (__u8 *)&open_command, sizeof(open_command));
710 }
711
712
713 static int firm_close(struct usb_serial_port *port)
714 {
715 struct whiteheat_simple close_command;
716
717 close_command.port = port->number - port->serial->minor + 1;
718 return firm_send_command(port, WHITEHEAT_CLOSE,
719 (__u8 *)&close_command, sizeof(close_command));
720 }
721
722
723 static void firm_setup_port(struct tty_struct *tty)
724 {
725 struct usb_serial_port *port = tty->driver_data;
726 struct device *dev = &port->dev;
727 struct whiteheat_port_settings port_settings;
728 unsigned int cflag = tty->termios->c_cflag;
729
730 port_settings.port = port->number + 1;
731
732 /* get the byte size */
733 switch (cflag & CSIZE) {
734 case CS5: port_settings.bits = 5; break;
735 case CS6: port_settings.bits = 6; break;
736 case CS7: port_settings.bits = 7; break;
737 default:
738 case CS8: port_settings.bits = 8; break;
739 }
740 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits);
741
742 /* determine the parity */
743 if (cflag & PARENB)
744 if (cflag & CMSPAR)
745 if (cflag & PARODD)
746 port_settings.parity = WHITEHEAT_PAR_MARK;
747 else
748 port_settings.parity = WHITEHEAT_PAR_SPACE;
749 else
750 if (cflag & PARODD)
751 port_settings.parity = WHITEHEAT_PAR_ODD;
752 else
753 port_settings.parity = WHITEHEAT_PAR_EVEN;
754 else
755 port_settings.parity = WHITEHEAT_PAR_NONE;
756 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
757
758 /* figure out the stop bits requested */
759 if (cflag & CSTOPB)
760 port_settings.stop = 2;
761 else
762 port_settings.stop = 1;
763 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop);
764
765 /* figure out the flow control settings */
766 if (cflag & CRTSCTS)
767 port_settings.hflow = (WHITEHEAT_HFLOW_CTS |
768 WHITEHEAT_HFLOW_RTS);
769 else
770 port_settings.hflow = WHITEHEAT_HFLOW_NONE;
771 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
772 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "",
773 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "",
774 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "",
775 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : "");
776
777 /* determine software flow control */
778 if (I_IXOFF(tty))
779 port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
780 else
781 port_settings.sflow = WHITEHEAT_SFLOW_NONE;
782 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
783
784 port_settings.xon = START_CHAR(tty);
785 port_settings.xoff = STOP_CHAR(tty);
786 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
787
788 /* get the baud rate wanted */
789 port_settings.baud = tty_get_baud_rate(tty);
790 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
791
792 /* fixme: should set validated settings */
793 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud);
794 /* handle any settings that aren't specified in the tty structure */
795 port_settings.lloop = 0;
796
797 /* now send the message to the device */
798 firm_send_command(port, WHITEHEAT_SETUP_PORT,
799 (__u8 *)&port_settings, sizeof(port_settings));
800 }
801
802
803 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff)
804 {
805 struct whiteheat_set_rdb rts_command;
806
807 rts_command.port = port->number - port->serial->minor + 1;
808 rts_command.state = onoff;
809 return firm_send_command(port, WHITEHEAT_SET_RTS,
810 (__u8 *)&rts_command, sizeof(rts_command));
811 }
812
813
814 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff)
815 {
816 struct whiteheat_set_rdb dtr_command;
817
818 dtr_command.port = port->number - port->serial->minor + 1;
819 dtr_command.state = onoff;
820 return firm_send_command(port, WHITEHEAT_SET_DTR,
821 (__u8 *)&dtr_command, sizeof(dtr_command));
822 }
823
824
825 static int firm_set_break(struct usb_serial_port *port, __u8 onoff)
826 {
827 struct whiteheat_set_rdb break_command;
828
829 break_command.port = port->number - port->serial->minor + 1;
830 break_command.state = onoff;
831 return firm_send_command(port, WHITEHEAT_SET_BREAK,
832 (__u8 *)&break_command, sizeof(break_command));
833 }
834
835
836 static int firm_purge(struct usb_serial_port *port, __u8 rxtx)
837 {
838 struct whiteheat_purge purge_command;
839
840 purge_command.port = port->number - port->serial->minor + 1;
841 purge_command.what = rxtx;
842 return firm_send_command(port, WHITEHEAT_PURGE,
843 (__u8 *)&purge_command, sizeof(purge_command));
844 }
845
846
847 static int firm_get_dtr_rts(struct usb_serial_port *port)
848 {
849 struct whiteheat_simple get_dr_command;
850
851 get_dr_command.port = port->number - port->serial->minor + 1;
852 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS,
853 (__u8 *)&get_dr_command, sizeof(get_dr_command));
854 }
855
856
857 static int firm_report_tx_done(struct usb_serial_port *port)
858 {
859 struct whiteheat_simple close_command;
860
861 close_command.port = port->number - port->serial->minor + 1;
862 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE,
863 (__u8 *)&close_command, sizeof(close_command));
864 }
865
866
867 /*****************************************************************************
868 * Connect Tech's White Heat utility functions
869 *****************************************************************************/
870 static int start_command_port(struct usb_serial *serial)
871 {
872 struct usb_serial_port *command_port;
873 struct whiteheat_command_private *command_info;
874 int retval = 0;
875
876 command_port = serial->port[COMMAND_PORT];
877 command_info = usb_get_serial_port_data(command_port);
878 mutex_lock(&command_info->mutex);
879 if (!command_info->port_running) {
880 /* Work around HCD bugs */
881 usb_clear_halt(serial->dev, command_port->read_urb->pipe);
882
883 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
884 if (retval) {
885 dev_err(&serial->dev->dev,
886 "%s - failed submitting read urb, error %d\n",
887 __func__, retval);
888 goto exit;
889 }
890 }
891 command_info->port_running++;
892
893 exit:
894 mutex_unlock(&command_info->mutex);
895 return retval;
896 }
897
898
899 static void stop_command_port(struct usb_serial *serial)
900 {
901 struct usb_serial_port *command_port;
902 struct whiteheat_command_private *command_info;
903
904 command_port = serial->port[COMMAND_PORT];
905 command_info = usb_get_serial_port_data(command_port);
906 mutex_lock(&command_info->mutex);
907 command_info->port_running--;
908 if (!command_info->port_running)
909 usb_kill_urb(command_port->read_urb);
910 mutex_unlock(&command_info->mutex);
911 }
912
913 module_usb_serial_driver(serial_drivers, id_table_combined);
914
915 MODULE_AUTHOR(DRIVER_AUTHOR);
916 MODULE_DESCRIPTION(DRIVER_DESC);
917 MODULE_LICENSE("GPL");
918
919 MODULE_FIRMWARE("whiteheat.fw");
920 MODULE_FIRMWARE("whiteheat_loader.fw");
921
922 module_param(debug, bool, S_IRUGO | S_IWUSR);
923 MODULE_PARM_DESC(debug, "Debug enabled or not");
kernel source for telekom puls (alcatel/mediatek)