2 * USB ConnectTech WhiteHEAT driver
7 * Copyright (C) 1999 - 2001
8 * Greg Kroah-Hartman (greg@kroah.com)
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.
15 * See Documentation/usb/usb-serial.txt for more information on using this
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 */
45 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>"
46 #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver"
48 #define CONNECT_TECH_VENDOR_ID 0x0710
49 #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001
50 #define CONNECT_TECH_WHITE_HEAT_ID 0x8001
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.
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 */
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 */
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 */
75 MODULE_DEVICE_TABLE(usb, id_table_combined);
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);
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);
100 static struct usb_serial_driver whiteheat_fake_device = {
102 .owner = THIS_MODULE,
103 .name = "whiteheatnofirm",
105 .description = "Connect Tech - WhiteHEAT - (prerenumeration)",
106 .id_table = id_table_prerenumeration,
108 .probe = whiteheat_firmware_download,
109 .attach = whiteheat_firmware_attach,
112 static struct usb_serial_driver whiteheat_device = {
114 .owner = THIS_MODULE,
117 .description = "Connect Tech - WhiteHEAT",
118 .id_table = id_table_std,
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,
135 static struct usb_serial_driver * const serial_drivers[] = {
136 &whiteheat_fake_device, &whiteheat_device, NULL
139 struct whiteheat_command_private {
142 __u8 command_finished;
143 wait_queue_head_t wait_command; /* for handling sleeping whilst
144 waiting for a command to
146 __u8 result_buffer[64];
149 struct whiteheat_private {
150 __u8 mcr; /* FIXME: no locking on mcr */
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);
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);
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)
179 /*****************************************************************************
180 * Connect Tech's White Heat prerenumeration driver functions
181 *****************************************************************************/
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
190 - download the WH.HEX file for all addresses less than 0x1b40 using
191 VENDOR_REQUEST_ANCHOR_LOAD
193 - device renumerated itself and comes up as new device id with all
194 firmware download completed.
196 static int whiteheat_firmware_download(struct usb_serial *serial,
197 const struct usb_device_id *id)
201 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
203 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
211 static int whiteheat_firmware_attach(struct usb_serial *serial)
213 /* We want this device to fail to have a driver assigned to it */
218 /*****************************************************************************
219 * Connect Tech's White Heat serial driver functions
220 *****************************************************************************/
221 static int whiteheat_attach(struct usb_serial *serial)
223 struct usb_serial_port *command_port;
224 struct whiteheat_command_private *command_info;
225 struct whiteheat_hw_info *hw_info;
232 command_port = serial->port[COMMAND_PORT];
234 pipe = usb_sndbulkpipe(serial->dev,
235 command_port->bulk_out_endpointAddress);
236 command = kmalloc(2, GFP_KERNEL);
238 goto no_command_buffer;
239 command[0] = WHITEHEAT_GET_HW_INFO;
242 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL);
244 goto no_result_buffer;
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.
250 usb_clear_halt(serial->dev, pipe);
251 ret = usb_bulk_msg(serial->dev, pipe, command, 2,
252 &alen, COMMAND_TIMEOUT_MS);
254 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
255 serial->type->description, ret);
257 } else if (alen != 2) {
258 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
259 serial->type->description, alen);
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);
270 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
271 serial->type->description, ret);
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);
277 } else if (result[0] != command[0]) {
278 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
279 serial->type->description, result[0]);
283 hw_info = (struct whiteheat_hw_info *)&result[1];
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);
289 command_info = kmalloc(sizeof(struct whiteheat_command_private),
292 goto no_command_private;
294 mutex_init(&command_info->mutex);
295 command_info->port_running = 0;
296 init_waitqueue_head(&command_info->wait_command);
297 usb_set_serial_port_data(command_port, command_info);
298 command_port->write_urb->complete = command_port_write_callback;
299 command_port->read_urb->complete = command_port_read_callback;
306 /* Firmware likely not running */
307 dev_err(&serial->dev->dev,
308 "%s: Unable to retrieve firmware version, try replugging\n",
309 serial->type->description);
310 dev_err(&serial->dev->dev,
311 "%s: If the firmware is not running (status led not blinking)\n",
312 serial->type->description);
313 dev_err(&serial->dev->dev,
314 "%s: please contact support@connecttech.com\n",
315 serial->type->description);
328 static void whiteheat_release(struct usb_serial *serial)
330 struct usb_serial_port *command_port;
332 /* free up our private data for our command port */
333 command_port = serial->port[COMMAND_PORT];
334 kfree(usb_get_serial_port_data(command_port));
337 static int whiteheat_port_probe(struct usb_serial_port *port)
339 struct whiteheat_private *info;
341 info = kzalloc(sizeof(*info), GFP_KERNEL);
345 usb_set_serial_port_data(port, info);
350 static int whiteheat_port_remove(struct usb_serial_port *port)
352 struct whiteheat_private *info;
354 info = usb_get_serial_port_data(port);
360 static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
364 retval = start_command_port(port->serial);
368 /* send an open port command */
369 retval = firm_open(port);
371 stop_command_port(port->serial);
375 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);
378 stop_command_port(port->serial);
383 firm_setup_port(tty);
385 /* Work around HCD bugs */
386 usb_clear_halt(port->serial->dev, port->read_urb->pipe);
387 usb_clear_halt(port->serial->dev, port->write_urb->pipe);
389 retval = usb_serial_generic_open(tty, port);
392 stop_command_port(port->serial);
400 static void whiteheat_close(struct usb_serial_port *port)
402 firm_report_tx_done(port);
405 usb_serial_generic_close(port);
407 stop_command_port(port->serial);
410 static int whiteheat_tiocmget(struct tty_struct *tty)
412 struct usb_serial_port *port = tty->driver_data;
413 struct whiteheat_private *info = usb_get_serial_port_data(port);
414 unsigned int modem_signals = 0;
416 firm_get_dtr_rts(port);
417 if (info->mcr & UART_MCR_DTR)
418 modem_signals |= TIOCM_DTR;
419 if (info->mcr & UART_MCR_RTS)
420 modem_signals |= TIOCM_RTS;
422 return modem_signals;
425 static int whiteheat_tiocmset(struct tty_struct *tty,
426 unsigned int set, unsigned int clear)
428 struct usb_serial_port *port = tty->driver_data;
429 struct whiteheat_private *info = usb_get_serial_port_data(port);
432 info->mcr |= UART_MCR_RTS;
434 info->mcr |= UART_MCR_DTR;
436 if (clear & TIOCM_RTS)
437 info->mcr &= ~UART_MCR_RTS;
438 if (clear & TIOCM_DTR)
439 info->mcr &= ~UART_MCR_DTR;
441 firm_set_dtr(port, info->mcr & UART_MCR_DTR);
442 firm_set_rts(port, info->mcr & UART_MCR_RTS);
447 static int whiteheat_ioctl(struct tty_struct *tty,
448 unsigned int cmd, unsigned long arg)
450 struct usb_serial_port *port = tty->driver_data;
451 struct serial_struct serstruct;
452 void __user *user_arg = (void __user *)arg;
456 memset(&serstruct, 0, sizeof(serstruct));
457 serstruct.type = PORT_16654;
458 serstruct.line = port->minor;
459 serstruct.port = port->port_number;
460 serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
461 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
462 serstruct.custom_divisor = 0;
463 serstruct.baud_base = 460800;
464 serstruct.close_delay = CLOSING_DELAY;
465 serstruct.closing_wait = CLOSING_DELAY;
467 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
478 static void whiteheat_set_termios(struct tty_struct *tty,
479 struct usb_serial_port *port, struct ktermios *old_termios)
481 firm_setup_port(tty);
484 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
486 struct usb_serial_port *port = tty->driver_data;
487 firm_set_break(port, break_state);
491 /*****************************************************************************
492 * Connect Tech's White Heat callback routines
493 *****************************************************************************/
494 static void command_port_write_callback(struct urb *urb)
496 int status = urb->status;
499 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
505 static void command_port_read_callback(struct urb *urb)
507 struct usb_serial_port *command_port = urb->context;
508 struct whiteheat_command_private *command_info;
509 int status = urb->status;
510 unsigned char *data = urb->transfer_buffer;
513 command_info = usb_get_serial_port_data(command_port);
515 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
519 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
520 if (status != -ENOENT)
521 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
522 wake_up(&command_info->wait_command);
526 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
528 if (data[0] == WHITEHEAT_CMD_COMPLETE) {
529 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
530 wake_up(&command_info->wait_command);
531 } else if (data[0] == WHITEHEAT_CMD_FAILURE) {
532 command_info->command_finished = WHITEHEAT_CMD_FAILURE;
533 wake_up(&command_info->wait_command);
534 } else if (data[0] == WHITEHEAT_EVENT) {
535 /* These are unsolicited reports from the firmware, hence no
536 waiting command to wakeup */
537 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
538 } else if (data[0] == WHITEHEAT_GET_DTR_RTS) {
539 memcpy(command_info->result_buffer, &data[1],
540 urb->actual_length - 1);
541 command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
542 wake_up(&command_info->wait_command);
544 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
546 /* Continue trying to always read */
547 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
549 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
554 /*****************************************************************************
555 * Connect Tech's White Heat firmware interface
556 *****************************************************************************/
557 static int firm_send_command(struct usb_serial_port *port, __u8 command,
558 __u8 *data, __u8 datasize)
560 struct usb_serial_port *command_port;
561 struct whiteheat_command_private *command_info;
562 struct whiteheat_private *info;
563 struct device *dev = &port->dev;
564 __u8 *transfer_buffer;
568 dev_dbg(dev, "%s - command %d\n", __func__, command);
570 command_port = port->serial->port[COMMAND_PORT];
571 command_info = usb_get_serial_port_data(command_port);
572 mutex_lock(&command_info->mutex);
573 command_info->command_finished = false;
575 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
576 transfer_buffer[0] = command;
577 memcpy(&transfer_buffer[1], data, datasize);
578 command_port->write_urb->transfer_buffer_length = datasize + 1;
579 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
581 dev_dbg(dev, "%s - submit urb failed\n", __func__);
585 /* wait for the command to complete */
586 t = wait_event_timeout(command_info->wait_command,
587 (bool)command_info->command_finished, COMMAND_TIMEOUT);
589 usb_kill_urb(command_port->write_urb);
591 if (command_info->command_finished == false) {
592 dev_dbg(dev, "%s - command timed out.\n", __func__);
597 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
598 dev_dbg(dev, "%s - command failed.\n", __func__);
603 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
604 dev_dbg(dev, "%s - command completed.\n", __func__);
606 case WHITEHEAT_GET_DTR_RTS:
607 info = usb_get_serial_port_data(port);
608 memcpy(&info->mcr, command_info->result_buffer,
609 sizeof(struct whiteheat_dr_info));
614 mutex_unlock(&command_info->mutex);
619 static int firm_open(struct usb_serial_port *port)
621 struct whiteheat_simple open_command;
623 open_command.port = port->port_number + 1;
624 return firm_send_command(port, WHITEHEAT_OPEN,
625 (__u8 *)&open_command, sizeof(open_command));
629 static int firm_close(struct usb_serial_port *port)
631 struct whiteheat_simple close_command;
633 close_command.port = port->port_number + 1;
634 return firm_send_command(port, WHITEHEAT_CLOSE,
635 (__u8 *)&close_command, sizeof(close_command));
639 static void firm_setup_port(struct tty_struct *tty)
641 struct usb_serial_port *port = tty->driver_data;
642 struct device *dev = &port->dev;
643 struct whiteheat_port_settings port_settings;
644 unsigned int cflag = tty->termios.c_cflag;
646 port_settings.port = port->port_number + 1;
648 /* get the byte size */
649 switch (cflag & CSIZE) {
650 case CS5: port_settings.bits = 5; break;
651 case CS6: port_settings.bits = 6; break;
652 case CS7: port_settings.bits = 7; break;
654 case CS8: port_settings.bits = 8; break;
656 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits);
658 /* determine the parity */
662 port_settings.parity = WHITEHEAT_PAR_MARK;
664 port_settings.parity = WHITEHEAT_PAR_SPACE;
667 port_settings.parity = WHITEHEAT_PAR_ODD;
669 port_settings.parity = WHITEHEAT_PAR_EVEN;
671 port_settings.parity = WHITEHEAT_PAR_NONE;
672 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
674 /* figure out the stop bits requested */
676 port_settings.stop = 2;
678 port_settings.stop = 1;
679 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop);
681 /* figure out the flow control settings */
683 port_settings.hflow = (WHITEHEAT_HFLOW_CTS |
684 WHITEHEAT_HFLOW_RTS);
686 port_settings.hflow = WHITEHEAT_HFLOW_NONE;
687 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
688 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "",
689 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "",
690 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "",
691 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : "");
693 /* determine software flow control */
695 port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
697 port_settings.sflow = WHITEHEAT_SFLOW_NONE;
698 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
700 port_settings.xon = START_CHAR(tty);
701 port_settings.xoff = STOP_CHAR(tty);
702 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
704 /* get the baud rate wanted */
705 port_settings.baud = tty_get_baud_rate(tty);
706 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
708 /* fixme: should set validated settings */
709 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud);
710 /* handle any settings that aren't specified in the tty structure */
711 port_settings.lloop = 0;
713 /* now send the message to the device */
714 firm_send_command(port, WHITEHEAT_SETUP_PORT,
715 (__u8 *)&port_settings, sizeof(port_settings));
719 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff)
721 struct whiteheat_set_rdb rts_command;
723 rts_command.port = port->port_number + 1;
724 rts_command.state = onoff;
725 return firm_send_command(port, WHITEHEAT_SET_RTS,
726 (__u8 *)&rts_command, sizeof(rts_command));
730 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff)
732 struct whiteheat_set_rdb dtr_command;
734 dtr_command.port = port->port_number + 1;
735 dtr_command.state = onoff;
736 return firm_send_command(port, WHITEHEAT_SET_DTR,
737 (__u8 *)&dtr_command, sizeof(dtr_command));
741 static int firm_set_break(struct usb_serial_port *port, __u8 onoff)
743 struct whiteheat_set_rdb break_command;
745 break_command.port = port->port_number + 1;
746 break_command.state = onoff;
747 return firm_send_command(port, WHITEHEAT_SET_BREAK,
748 (__u8 *)&break_command, sizeof(break_command));
752 static int firm_purge(struct usb_serial_port *port, __u8 rxtx)
754 struct whiteheat_purge purge_command;
756 purge_command.port = port->port_number + 1;
757 purge_command.what = rxtx;
758 return firm_send_command(port, WHITEHEAT_PURGE,
759 (__u8 *)&purge_command, sizeof(purge_command));
763 static int firm_get_dtr_rts(struct usb_serial_port *port)
765 struct whiteheat_simple get_dr_command;
767 get_dr_command.port = port->port_number + 1;
768 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS,
769 (__u8 *)&get_dr_command, sizeof(get_dr_command));
773 static int firm_report_tx_done(struct usb_serial_port *port)
775 struct whiteheat_simple close_command;
777 close_command.port = port->port_number + 1;
778 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE,
779 (__u8 *)&close_command, sizeof(close_command));
783 /*****************************************************************************
784 * Connect Tech's White Heat utility functions
785 *****************************************************************************/
786 static int start_command_port(struct usb_serial *serial)
788 struct usb_serial_port *command_port;
789 struct whiteheat_command_private *command_info;
792 command_port = serial->port[COMMAND_PORT];
793 command_info = usb_get_serial_port_data(command_port);
794 mutex_lock(&command_info->mutex);
795 if (!command_info->port_running) {
796 /* Work around HCD bugs */
797 usb_clear_halt(serial->dev, command_port->read_urb->pipe);
799 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
801 dev_err(&serial->dev->dev,
802 "%s - failed submitting read urb, error %d\n",
807 command_info->port_running++;
810 mutex_unlock(&command_info->mutex);
815 static void stop_command_port(struct usb_serial *serial)
817 struct usb_serial_port *command_port;
818 struct whiteheat_command_private *command_info;
820 command_port = serial->port[COMMAND_PORT];
821 command_info = usb_get_serial_port_data(command_port);
822 mutex_lock(&command_info->mutex);
823 command_info->port_running--;
824 if (!command_info->port_running)
825 usb_kill_urb(command_port->read_urb);
826 mutex_unlock(&command_info->mutex);
829 module_usb_serial_driver(serial_drivers, id_table_combined);
831 MODULE_AUTHOR(DRIVER_AUTHOR);
832 MODULE_DESCRIPTION(DRIVER_DESC);
833 MODULE_LICENSE("GPL");
835 MODULE_FIRMWARE("whiteheat.fw");
836 MODULE_FIRMWARE("whiteheat_loader.fw");