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_open(struct tty_struct *tty, 87 struct usb_serial_port *port); 88 static void whiteheat_close(struct usb_serial_port *port); 89 static int whiteheat_ioctl(struct tty_struct *tty, 90 unsigned int cmd, unsigned long arg); 91 static void whiteheat_set_termios(struct tty_struct *tty, 92 struct usb_serial_port *port, struct ktermios *old); 93 static int whiteheat_tiocmget(struct tty_struct *tty); 94 static int whiteheat_tiocmset(struct tty_struct *tty, 95 unsigned int set, unsigned int clear); 96 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); 97 98 static struct usb_serial_driver whiteheat_fake_device = { 99 .driver = { 100 .owner = THIS_MODULE, 101 .name = "whiteheatnofirm", 102 }, 103 .description = "Connect Tech - WhiteHEAT - (prerenumeration)", 104 .id_table = id_table_prerenumeration, 105 .num_ports = 1, 106 .probe = whiteheat_firmware_download, 107 .attach = whiteheat_firmware_attach, 108 }; 109 110 static struct usb_serial_driver whiteheat_device = { 111 .driver = { 112 .owner = THIS_MODULE, 113 .name = "whiteheat", 114 }, 115 .description = "Connect Tech - WhiteHEAT", 116 .id_table = id_table_std, 117 .num_ports = 4, 118 .attach = whiteheat_attach, 119 .release = whiteheat_release, 120 .open = whiteheat_open, 121 .close = whiteheat_close, 122 .ioctl = whiteheat_ioctl, 123 .set_termios = whiteheat_set_termios, 124 .break_ctl = whiteheat_break_ctl, 125 .tiocmget = whiteheat_tiocmget, 126 .tiocmset = whiteheat_tiocmset, 127 .throttle = usb_serial_generic_throttle, 128 .unthrottle = usb_serial_generic_unthrottle, 129 }; 130 131 static struct usb_serial_driver * const serial_drivers[] = { 132 &whiteheat_fake_device, &whiteheat_device, NULL 133 }; 134 135 struct whiteheat_command_private { 136 struct mutex mutex; 137 __u8 port_running; 138 __u8 command_finished; 139 wait_queue_head_t wait_command; /* for handling sleeping whilst 140 waiting for a command to 141 finish */ 142 __u8 result_buffer[64]; 143 }; 144 145 struct whiteheat_private { 146 __u8 mcr; /* FIXME: no locking on mcr */ 147 }; 148 149 150 /* local function prototypes */ 151 static int start_command_port(struct usb_serial *serial); 152 static void stop_command_port(struct usb_serial *serial); 153 static void command_port_write_callback(struct urb *urb); 154 static void command_port_read_callback(struct urb *urb); 155 156 static int firm_send_command(struct usb_serial_port *port, __u8 command, 157 __u8 *data, __u8 datasize); 158 static int firm_open(struct usb_serial_port *port); 159 static int firm_close(struct usb_serial_port *port); 160 static void firm_setup_port(struct tty_struct *tty); 161 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); 162 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); 163 static int firm_set_break(struct usb_serial_port *port, __u8 onoff); 164 static int firm_purge(struct usb_serial_port *port, __u8 rxtx); 165 static int firm_get_dtr_rts(struct usb_serial_port *port); 166 static int firm_report_tx_done(struct usb_serial_port *port); 167 168 169 #define COMMAND_PORT 4 170 #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ 171 #define COMMAND_TIMEOUT_MS 2000 172 #define CLOSING_DELAY (30 * HZ) 173 174 175 /***************************************************************************** 176 * Connect Tech's White Heat prerenumeration driver functions 177 *****************************************************************************/ 178 179 /* steps to download the firmware to the WhiteHEAT device: 180 - hold the reset (by writing to the reset bit of the CPUCS register) 181 - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD 182 - release the reset (by writing to the CPUCS register) 183 - download the WH.HEX file for all addresses greater than 0x1b3f using 184 VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD 185 - hold the reset 186 - download the WH.HEX file for all addresses less than 0x1b40 using 187 VENDOR_REQUEST_ANCHOR_LOAD 188 - release the reset 189 - device renumerated itself and comes up as new device id with all 190 firmware download completed. 191 */ 192 static int whiteheat_firmware_download(struct usb_serial *serial, 193 const struct usb_device_id *id) 194 { 195 int response; 196 197 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw"); 198 if (response >= 0) { 199 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw"); 200 if (response >= 0) 201 return 0; 202 } 203 return -ENOENT; 204 } 205 206 207 static int whiteheat_firmware_attach(struct usb_serial *serial) 208 { 209 /* We want this device to fail to have a driver assigned to it */ 210 return 1; 211 } 212 213 214 /***************************************************************************** 215 * Connect Tech's White Heat serial driver functions 216 *****************************************************************************/ 217 static int whiteheat_attach(struct usb_serial *serial) 218 { 219 struct usb_serial_port *command_port; 220 struct whiteheat_command_private *command_info; 221 struct usb_serial_port *port; 222 struct whiteheat_private *info; 223 struct whiteheat_hw_info *hw_info; 224 int pipe; 225 int ret; 226 int alen; 227 __u8 *command; 228 __u8 *result; 229 int i; 230 231 command_port = serial->port[COMMAND_PORT]; 232 233 pipe = usb_sndbulkpipe(serial->dev, 234 command_port->bulk_out_endpointAddress); 235 command = kmalloc(2, GFP_KERNEL); 236 if (!command) 237 goto no_command_buffer; 238 command[0] = WHITEHEAT_GET_HW_INFO; 239 command[1] = 0; 240 241 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); 242 if (!result) 243 goto no_result_buffer; 244 /* 245 * When the module is reloaded the firmware is still there and 246 * the endpoints are still in the usb core unchanged. This is the 247 * unlinking bug in disguise. Same for the call below. 248 */ 249 usb_clear_halt(serial->dev, pipe); 250 ret = usb_bulk_msg(serial->dev, pipe, command, 2, 251 &alen, COMMAND_TIMEOUT_MS); 252 if (ret) { 253 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", 254 serial->type->description, ret); 255 goto no_firmware; 256 } else if (alen != 2) { 257 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", 258 serial->type->description, alen); 259 goto no_firmware; 260 } 261 262 pipe = usb_rcvbulkpipe(serial->dev, 263 command_port->bulk_in_endpointAddress); 264 /* See the comment on the usb_clear_halt() above */ 265 usb_clear_halt(serial->dev, pipe); 266 ret = usb_bulk_msg(serial->dev, pipe, result, 267 sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); 268 if (ret) { 269 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", 270 serial->type->description, ret); 271 goto no_firmware; 272 } else if (alen != sizeof(*hw_info) + 1) { 273 dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", 274 serial->type->description, alen); 275 goto no_firmware; 276 } else if (result[0] != command[0]) { 277 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", 278 serial->type->description, result[0]); 279 goto no_firmware; 280 } 281 282 hw_info = (struct whiteheat_hw_info *)&result[1]; 283 284 dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n", 285 serial->type->description, 286 hw_info->sw_major_rev, hw_info->sw_minor_rev); 287 288 for (i = 0; i < serial->num_ports; i++) { 289 port = serial->port[i]; 290 291 info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); 292 if (info == NULL) { 293 dev_err(&port->dev, 294 "%s: Out of memory for port structures\n", 295 serial->type->description); 296 goto no_private; 297 } 298 299 info->mcr = 0; 300 301 usb_set_serial_port_data(port, info); 302 } 303 304 command_info = kmalloc(sizeof(struct whiteheat_command_private), 305 GFP_KERNEL); 306 if (command_info == NULL) { 307 dev_err(&serial->dev->dev, 308 "%s: Out of memory for port structures\n", 309 serial->type->description); 310 goto no_command_private; 311 } 312 313 mutex_init(&command_info->mutex); 314 command_info->port_running = 0; 315 init_waitqueue_head(&command_info->wait_command); 316 usb_set_serial_port_data(command_port, command_info); 317 command_port->write_urb->complete = command_port_write_callback; 318 command_port->read_urb->complete = command_port_read_callback; 319 kfree(result); 320 kfree(command); 321 322 return 0; 323 324 no_firmware: 325 /* Firmware likely not running */ 326 dev_err(&serial->dev->dev, 327 "%s: Unable to retrieve firmware version, try replugging\n", 328 serial->type->description); 329 dev_err(&serial->dev->dev, 330 "%s: If the firmware is not running (status led not blinking)\n", 331 serial->type->description); 332 dev_err(&serial->dev->dev, 333 "%s: please contact support@connecttech.com\n", 334 serial->type->description); 335 kfree(result); 336 return -ENODEV; 337 338 no_command_private: 339 for (i = serial->num_ports - 1; i >= 0; i--) { 340 port = serial->port[i]; 341 info = usb_get_serial_port_data(port); 342 kfree(info); 343 no_private: 344 ; 345 } 346 kfree(result); 347 no_result_buffer: 348 kfree(command); 349 no_command_buffer: 350 return -ENOMEM; 351 } 352 353 354 static void whiteheat_release(struct usb_serial *serial) 355 { 356 struct usb_serial_port *command_port; 357 struct whiteheat_private *info; 358 int i; 359 360 /* free up our private data for our command port */ 361 command_port = serial->port[COMMAND_PORT]; 362 kfree(usb_get_serial_port_data(command_port)); 363 364 for (i = 0; i < serial->num_ports; i++) { 365 info = usb_get_serial_port_data(serial->port[i]); 366 kfree(info); 367 } 368 } 369 370 static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) 371 { 372 int retval; 373 374 retval = start_command_port(port->serial); 375 if (retval) 376 goto exit; 377 378 /* send an open port command */ 379 retval = firm_open(port); 380 if (retval) { 381 stop_command_port(port->serial); 382 goto exit; 383 } 384 385 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); 386 if (retval) { 387 firm_close(port); 388 stop_command_port(port->serial); 389 goto exit; 390 } 391 392 if (tty) 393 firm_setup_port(tty); 394 395 /* Work around HCD bugs */ 396 usb_clear_halt(port->serial->dev, port->read_urb->pipe); 397 usb_clear_halt(port->serial->dev, port->write_urb->pipe); 398 399 retval = usb_serial_generic_open(tty, port); 400 if (retval) { 401 firm_close(port); 402 stop_command_port(port->serial); 403 goto exit; 404 } 405 exit: 406 return retval; 407 } 408 409 410 static void whiteheat_close(struct usb_serial_port *port) 411 { 412 firm_report_tx_done(port); 413 firm_close(port); 414 415 usb_serial_generic_close(port); 416 417 stop_command_port(port->serial); 418 } 419 420 static int whiteheat_tiocmget(struct tty_struct *tty) 421 { 422 struct usb_serial_port *port = tty->driver_data; 423 struct whiteheat_private *info = usb_get_serial_port_data(port); 424 unsigned int modem_signals = 0; 425 426 firm_get_dtr_rts(port); 427 if (info->mcr & UART_MCR_DTR) 428 modem_signals |= TIOCM_DTR; 429 if (info->mcr & UART_MCR_RTS) 430 modem_signals |= TIOCM_RTS; 431 432 return modem_signals; 433 } 434 435 static int whiteheat_tiocmset(struct tty_struct *tty, 436 unsigned int set, unsigned int clear) 437 { 438 struct usb_serial_port *port = tty->driver_data; 439 struct whiteheat_private *info = usb_get_serial_port_data(port); 440 441 if (set & TIOCM_RTS) 442 info->mcr |= UART_MCR_RTS; 443 if (set & TIOCM_DTR) 444 info->mcr |= UART_MCR_DTR; 445 446 if (clear & TIOCM_RTS) 447 info->mcr &= ~UART_MCR_RTS; 448 if (clear & TIOCM_DTR) 449 info->mcr &= ~UART_MCR_DTR; 450 451 firm_set_dtr(port, info->mcr & UART_MCR_DTR); 452 firm_set_rts(port, info->mcr & UART_MCR_RTS); 453 return 0; 454 } 455 456 457 static int whiteheat_ioctl(struct tty_struct *tty, 458 unsigned int cmd, unsigned long arg) 459 { 460 struct usb_serial_port *port = tty->driver_data; 461 struct serial_struct serstruct; 462 void __user *user_arg = (void __user *)arg; 463 464 dev_dbg(&port->dev, "%s - cmd 0x%.4x\n", __func__, cmd); 465 466 switch (cmd) { 467 case TIOCGSERIAL: 468 memset(&serstruct, 0, sizeof(serstruct)); 469 serstruct.type = PORT_16654; 470 serstruct.line = port->serial->minor; 471 serstruct.port = port->number; 472 serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 473 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo); 474 serstruct.custom_divisor = 0; 475 serstruct.baud_base = 460800; 476 serstruct.close_delay = CLOSING_DELAY; 477 serstruct.closing_wait = CLOSING_DELAY; 478 479 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) 480 return -EFAULT; 481 break; 482 default: 483 break; 484 } 485 486 return -ENOIOCTLCMD; 487 } 488 489 490 static void whiteheat_set_termios(struct tty_struct *tty, 491 struct usb_serial_port *port, struct ktermios *old_termios) 492 { 493 firm_setup_port(tty); 494 } 495 496 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) 497 { 498 struct usb_serial_port *port = tty->driver_data; 499 firm_set_break(port, break_state); 500 } 501 502 503 /***************************************************************************** 504 * Connect Tech's White Heat callback routines 505 *****************************************************************************/ 506 static void command_port_write_callback(struct urb *urb) 507 { 508 int status = urb->status; 509 510 if (status) { 511 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status); 512 return; 513 } 514 } 515 516 517 static void command_port_read_callback(struct urb *urb) 518 { 519 struct usb_serial_port *command_port = urb->context; 520 struct whiteheat_command_private *command_info; 521 int status = urb->status; 522 unsigned char *data = urb->transfer_buffer; 523 int result; 524 525 command_info = usb_get_serial_port_data(command_port); 526 if (!command_info) { 527 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__); 528 return; 529 } 530 if (status) { 531 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status); 532 if (status != -ENOENT) 533 command_info->command_finished = WHITEHEAT_CMD_FAILURE; 534 wake_up(&command_info->wait_command); 535 return; 536 } 537 538 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data); 539 540 if (data[0] == WHITEHEAT_CMD_COMPLETE) { 541 command_info->command_finished = WHITEHEAT_CMD_COMPLETE; 542 wake_up(&command_info->wait_command); 543 } else if (data[0] == WHITEHEAT_CMD_FAILURE) { 544 command_info->command_finished = WHITEHEAT_CMD_FAILURE; 545 wake_up(&command_info->wait_command); 546 } else if (data[0] == WHITEHEAT_EVENT) { 547 /* These are unsolicited reports from the firmware, hence no 548 waiting command to wakeup */ 549 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__); 550 } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { 551 memcpy(command_info->result_buffer, &data[1], 552 urb->actual_length - 1); 553 command_info->command_finished = WHITEHEAT_CMD_COMPLETE; 554 wake_up(&command_info->wait_command); 555 } else 556 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__); 557 558 /* Continue trying to always read */ 559 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); 560 if (result) 561 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", 562 __func__, result); 563 } 564 565 566 /***************************************************************************** 567 * Connect Tech's White Heat firmware interface 568 *****************************************************************************/ 569 static int firm_send_command(struct usb_serial_port *port, __u8 command, 570 __u8 *data, __u8 datasize) 571 { 572 struct usb_serial_port *command_port; 573 struct whiteheat_command_private *command_info; 574 struct whiteheat_private *info; 575 struct device *dev = &port->dev; 576 __u8 *transfer_buffer; 577 int retval = 0; 578 int t; 579 580 dev_dbg(dev, "%s - command %d\n", __func__, command); 581 582 command_port = port->serial->port[COMMAND_PORT]; 583 command_info = usb_get_serial_port_data(command_port); 584 mutex_lock(&command_info->mutex); 585 command_info->command_finished = false; 586 587 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; 588 transfer_buffer[0] = command; 589 memcpy(&transfer_buffer[1], data, datasize); 590 command_port->write_urb->transfer_buffer_length = datasize + 1; 591 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); 592 if (retval) { 593 dev_dbg(dev, "%s - submit urb failed\n", __func__); 594 goto exit; 595 } 596 597 /* wait for the command to complete */ 598 t = wait_event_timeout(command_info->wait_command, 599 (bool)command_info->command_finished, COMMAND_TIMEOUT); 600 if (!t) 601 usb_kill_urb(command_port->write_urb); 602 603 if (command_info->command_finished == false) { 604 dev_dbg(dev, "%s - command timed out.\n", __func__); 605 retval = -ETIMEDOUT; 606 goto exit; 607 } 608 609 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { 610 dev_dbg(dev, "%s - command failed.\n", __func__); 611 retval = -EIO; 612 goto exit; 613 } 614 615 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { 616 dev_dbg(dev, "%s - command completed.\n", __func__); 617 switch (command) { 618 case WHITEHEAT_GET_DTR_RTS: 619 info = usb_get_serial_port_data(port); 620 memcpy(&info->mcr, command_info->result_buffer, 621 sizeof(struct whiteheat_dr_info)); 622 break; 623 } 624 } 625 exit: 626 mutex_unlock(&command_info->mutex); 627 return retval; 628 } 629 630 631 static int firm_open(struct usb_serial_port *port) 632 { 633 struct whiteheat_simple open_command; 634 635 open_command.port = port->number - port->serial->minor + 1; 636 return firm_send_command(port, WHITEHEAT_OPEN, 637 (__u8 *)&open_command, sizeof(open_command)); 638 } 639 640 641 static int firm_close(struct usb_serial_port *port) 642 { 643 struct whiteheat_simple close_command; 644 645 close_command.port = port->number - port->serial->minor + 1; 646 return firm_send_command(port, WHITEHEAT_CLOSE, 647 (__u8 *)&close_command, sizeof(close_command)); 648 } 649 650 651 static void firm_setup_port(struct tty_struct *tty) 652 { 653 struct usb_serial_port *port = tty->driver_data; 654 struct device *dev = &port->dev; 655 struct whiteheat_port_settings port_settings; 656 unsigned int cflag = tty->termios.c_cflag; 657 658 port_settings.port = port->number + 1; 659 660 /* get the byte size */ 661 switch (cflag & CSIZE) { 662 case CS5: port_settings.bits = 5; break; 663 case CS6: port_settings.bits = 6; break; 664 case CS7: port_settings.bits = 7; break; 665 default: 666 case CS8: port_settings.bits = 8; break; 667 } 668 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits); 669 670 /* determine the parity */ 671 if (cflag & PARENB) 672 if (cflag & CMSPAR) 673 if (cflag & PARODD) 674 port_settings.parity = WHITEHEAT_PAR_MARK; 675 else 676 port_settings.parity = WHITEHEAT_PAR_SPACE; 677 else 678 if (cflag & PARODD) 679 port_settings.parity = WHITEHEAT_PAR_ODD; 680 else 681 port_settings.parity = WHITEHEAT_PAR_EVEN; 682 else 683 port_settings.parity = WHITEHEAT_PAR_NONE; 684 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity); 685 686 /* figure out the stop bits requested */ 687 if (cflag & CSTOPB) 688 port_settings.stop = 2; 689 else 690 port_settings.stop = 1; 691 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop); 692 693 /* figure out the flow control settings */ 694 if (cflag & CRTSCTS) 695 port_settings.hflow = (WHITEHEAT_HFLOW_CTS | 696 WHITEHEAT_HFLOW_RTS); 697 else 698 port_settings.hflow = WHITEHEAT_HFLOW_NONE; 699 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__, 700 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", 701 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", 702 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", 703 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); 704 705 /* determine software flow control */ 706 if (I_IXOFF(tty)) 707 port_settings.sflow = WHITEHEAT_SFLOW_RXTX; 708 else 709 port_settings.sflow = WHITEHEAT_SFLOW_NONE; 710 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow); 711 712 port_settings.xon = START_CHAR(tty); 713 port_settings.xoff = STOP_CHAR(tty); 714 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff); 715 716 /* get the baud rate wanted */ 717 port_settings.baud = tty_get_baud_rate(tty); 718 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud); 719 720 /* fixme: should set validated settings */ 721 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); 722 /* handle any settings that aren't specified in the tty structure */ 723 port_settings.lloop = 0; 724 725 /* now send the message to the device */ 726 firm_send_command(port, WHITEHEAT_SETUP_PORT, 727 (__u8 *)&port_settings, sizeof(port_settings)); 728 } 729 730 731 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) 732 { 733 struct whiteheat_set_rdb rts_command; 734 735 rts_command.port = port->number - port->serial->minor + 1; 736 rts_command.state = onoff; 737 return firm_send_command(port, WHITEHEAT_SET_RTS, 738 (__u8 *)&rts_command, sizeof(rts_command)); 739 } 740 741 742 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) 743 { 744 struct whiteheat_set_rdb dtr_command; 745 746 dtr_command.port = port->number - port->serial->minor + 1; 747 dtr_command.state = onoff; 748 return firm_send_command(port, WHITEHEAT_SET_DTR, 749 (__u8 *)&dtr_command, sizeof(dtr_command)); 750 } 751 752 753 static int firm_set_break(struct usb_serial_port *port, __u8 onoff) 754 { 755 struct whiteheat_set_rdb break_command; 756 757 break_command.port = port->number - port->serial->minor + 1; 758 break_command.state = onoff; 759 return firm_send_command(port, WHITEHEAT_SET_BREAK, 760 (__u8 *)&break_command, sizeof(break_command)); 761 } 762 763 764 static int firm_purge(struct usb_serial_port *port, __u8 rxtx) 765 { 766 struct whiteheat_purge purge_command; 767 768 purge_command.port = port->number - port->serial->minor + 1; 769 purge_command.what = rxtx; 770 return firm_send_command(port, WHITEHEAT_PURGE, 771 (__u8 *)&purge_command, sizeof(purge_command)); 772 } 773 774 775 static int firm_get_dtr_rts(struct usb_serial_port *port) 776 { 777 struct whiteheat_simple get_dr_command; 778 779 get_dr_command.port = port->number - port->serial->minor + 1; 780 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, 781 (__u8 *)&get_dr_command, sizeof(get_dr_command)); 782 } 783 784 785 static int firm_report_tx_done(struct usb_serial_port *port) 786 { 787 struct whiteheat_simple close_command; 788 789 close_command.port = port->number - port->serial->minor + 1; 790 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, 791 (__u8 *)&close_command, sizeof(close_command)); 792 } 793 794 795 /***************************************************************************** 796 * Connect Tech's White Heat utility functions 797 *****************************************************************************/ 798 static int start_command_port(struct usb_serial *serial) 799 { 800 struct usb_serial_port *command_port; 801 struct whiteheat_command_private *command_info; 802 int retval = 0; 803 804 command_port = serial->port[COMMAND_PORT]; 805 command_info = usb_get_serial_port_data(command_port); 806 mutex_lock(&command_info->mutex); 807 if (!command_info->port_running) { 808 /* Work around HCD bugs */ 809 usb_clear_halt(serial->dev, command_port->read_urb->pipe); 810 811 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); 812 if (retval) { 813 dev_err(&serial->dev->dev, 814 "%s - failed submitting read urb, error %d\n", 815 __func__, retval); 816 goto exit; 817 } 818 } 819 command_info->port_running++; 820 821 exit: 822 mutex_unlock(&command_info->mutex); 823 return retval; 824 } 825 826 827 static void stop_command_port(struct usb_serial *serial) 828 { 829 struct usb_serial_port *command_port; 830 struct whiteheat_command_private *command_info; 831 832 command_port = serial->port[COMMAND_PORT]; 833 command_info = usb_get_serial_port_data(command_port); 834 mutex_lock(&command_info->mutex); 835 command_info->port_running--; 836 if (!command_info->port_running) 837 usb_kill_urb(command_port->read_urb); 838 mutex_unlock(&command_info->mutex); 839 } 840 841 module_usb_serial_driver(serial_drivers, id_table_combined); 842 843 MODULE_AUTHOR(DRIVER_AUTHOR); 844 MODULE_DESCRIPTION(DRIVER_DESC); 845 MODULE_LICENSE("GPL"); 846 847 MODULE_FIRMWARE("whiteheat.fw"); 848 MODULE_FIRMWARE("whiteheat_loader.fw"); 849