1 /* 2 * USB Keyspan PDA / Xircom / Entregra Converter driver 3 * 4 * Copyright (C) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com> 5 * Copyright (C) 1999, 2000 Brian Warner <warner@lothar.com> 6 * Copyright (C) 2000 Al Borchers <borchers@steinerpoint.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * See Documentation/usb/usb-serial.txt for more information on using this 14 * driver 15 */ 16 17 18 #include <linux/kernel.h> 19 #include <linux/errno.h> 20 #include <linux/init.h> 21 #include <linux/slab.h> 22 #include <linux/tty.h> 23 #include <linux/tty_driver.h> 24 #include <linux/tty_flip.h> 25 #include <linux/module.h> 26 #include <linux/spinlock.h> 27 #include <linux/workqueue.h> 28 #include <linux/uaccess.h> 29 #include <linux/usb.h> 30 #include <linux/usb/serial.h> 31 #include <linux/usb/ezusb.h> 32 33 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */ 34 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE) 35 #define KEYSPAN 36 #else 37 #undef KEYSPAN 38 #endif 39 #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE) 40 #define XIRCOM 41 #else 42 #undef XIRCOM 43 #endif 44 45 #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>" 46 #define DRIVER_DESC "USB Keyspan PDA Converter driver" 47 48 struct keyspan_pda_private { 49 int tx_room; 50 int tx_throttled; 51 struct work_struct wakeup_work; 52 struct work_struct unthrottle_work; 53 struct usb_serial *serial; 54 struct usb_serial_port *port; 55 }; 56 57 58 #define KEYSPAN_VENDOR_ID 0x06cd 59 #define KEYSPAN_PDA_FAKE_ID 0x0103 60 #define KEYSPAN_PDA_ID 0x0104 /* no clue */ 61 62 /* For Xircom PGSDB9 and older Entregra version of the same device */ 63 #define XIRCOM_VENDOR_ID 0x085a 64 #define XIRCOM_FAKE_ID 0x8027 65 #define ENTREGRA_VENDOR_ID 0x1645 66 #define ENTREGRA_FAKE_ID 0x8093 67 68 static const struct usb_device_id id_table_combined[] = { 69 #ifdef KEYSPAN 70 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, 71 #endif 72 #ifdef XIRCOM 73 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, 74 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, 75 #endif 76 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, 77 { } /* Terminating entry */ 78 }; 79 80 MODULE_DEVICE_TABLE(usb, id_table_combined); 81 82 static const struct usb_device_id id_table_std[] = { 83 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, 84 { } /* Terminating entry */ 85 }; 86 87 #ifdef KEYSPAN 88 static const struct usb_device_id id_table_fake[] = { 89 { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, 90 { } /* Terminating entry */ 91 }; 92 #endif 93 94 #ifdef XIRCOM 95 static const struct usb_device_id id_table_fake_xircom[] = { 96 { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, 97 { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, 98 { } 99 }; 100 #endif 101 102 static void keyspan_pda_wakeup_write(struct work_struct *work) 103 { 104 struct keyspan_pda_private *priv = 105 container_of(work, struct keyspan_pda_private, wakeup_work); 106 struct usb_serial_port *port = priv->port; 107 struct tty_struct *tty = tty_port_tty_get(&port->port); 108 if (tty) 109 tty_wakeup(tty); 110 tty_kref_put(tty); 111 } 112 113 static void keyspan_pda_request_unthrottle(struct work_struct *work) 114 { 115 struct keyspan_pda_private *priv = 116 container_of(work, struct keyspan_pda_private, unthrottle_work); 117 struct usb_serial *serial = priv->serial; 118 int result; 119 120 /* ask the device to tell us when the tx buffer becomes 121 sufficiently empty */ 122 result = usb_control_msg(serial->dev, 123 usb_sndctrlpipe(serial->dev, 0), 124 7, /* request_unthrottle */ 125 USB_TYPE_VENDOR | USB_RECIP_INTERFACE 126 | USB_DIR_OUT, 127 16, /* value: threshold */ 128 0, /* index */ 129 NULL, 130 0, 131 2000); 132 if (result < 0) 133 dev_dbg(&serial->dev->dev, "%s - error %d from usb_control_msg\n", 134 __func__, result); 135 } 136 137 138 static void keyspan_pda_rx_interrupt(struct urb *urb) 139 { 140 struct usb_serial_port *port = urb->context; 141 struct tty_struct *tty; 142 unsigned char *data = urb->transfer_buffer; 143 int retval; 144 int status = urb->status; 145 struct keyspan_pda_private *priv; 146 priv = usb_get_serial_port_data(port); 147 148 switch (status) { 149 case 0: 150 /* success */ 151 break; 152 case -ECONNRESET: 153 case -ENOENT: 154 case -ESHUTDOWN: 155 /* this urb is terminated, clean up */ 156 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 157 return; 158 default: 159 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 160 goto exit; 161 } 162 163 /* see if the message is data or a status interrupt */ 164 switch (data[0]) { 165 case 0: 166 tty = tty_port_tty_get(&port->port); 167 /* rest of message is rx data */ 168 if (tty && urb->actual_length) { 169 tty_insert_flip_string(tty, data + 1, 170 urb->actual_length - 1); 171 tty_flip_buffer_push(tty); 172 } 173 tty_kref_put(tty); 174 break; 175 case 1: 176 /* status interrupt */ 177 dev_dbg(&port->dev, "rx int, d1=%d, d2=%d\n", data[1], data[2]); 178 switch (data[1]) { 179 case 1: /* modemline change */ 180 break; 181 case 2: /* tx unthrottle interrupt */ 182 priv->tx_throttled = 0; 183 /* queue up a wakeup at scheduler time */ 184 schedule_work(&priv->wakeup_work); 185 break; 186 default: 187 break; 188 } 189 break; 190 default: 191 break; 192 } 193 194 exit: 195 retval = usb_submit_urb(urb, GFP_ATOMIC); 196 if (retval) 197 dev_err(&port->dev, 198 "%s - usb_submit_urb failed with result %d", 199 __func__, retval); 200 } 201 202 203 static void keyspan_pda_rx_throttle(struct tty_struct *tty) 204 { 205 /* stop receiving characters. We just turn off the URB request, and 206 let chars pile up in the device. If we're doing hardware 207 flowcontrol, the device will signal the other end when its buffer 208 fills up. If we're doing XON/XOFF, this would be a good time to 209 send an XOFF, although it might make sense to foist that off 210 upon the device too. */ 211 struct usb_serial_port *port = tty->driver_data; 212 213 usb_kill_urb(port->interrupt_in_urb); 214 } 215 216 217 static void keyspan_pda_rx_unthrottle(struct tty_struct *tty) 218 { 219 struct usb_serial_port *port = tty->driver_data; 220 /* just restart the receive interrupt URB */ 221 222 if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL)) 223 dev_dbg(&port->dev, "usb_submit_urb(read urb) failed\n"); 224 } 225 226 227 static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud) 228 { 229 int rc; 230 int bindex; 231 232 switch (baud) { 233 case 110: 234 bindex = 0; 235 break; 236 case 300: 237 bindex = 1; 238 break; 239 case 1200: 240 bindex = 2; 241 break; 242 case 2400: 243 bindex = 3; 244 break; 245 case 4800: 246 bindex = 4; 247 break; 248 case 9600: 249 bindex = 5; 250 break; 251 case 19200: 252 bindex = 6; 253 break; 254 case 38400: 255 bindex = 7; 256 break; 257 case 57600: 258 bindex = 8; 259 break; 260 case 115200: 261 bindex = 9; 262 break; 263 default: 264 bindex = 5; /* Default to 9600 */ 265 baud = 9600; 266 } 267 268 /* rather than figure out how to sleep while waiting for this 269 to complete, I just use the "legacy" API. */ 270 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 271 0, /* set baud */ 272 USB_TYPE_VENDOR 273 | USB_RECIP_INTERFACE 274 | USB_DIR_OUT, /* type */ 275 bindex, /* value */ 276 0, /* index */ 277 NULL, /* &data */ 278 0, /* size */ 279 2000); /* timeout */ 280 if (rc < 0) 281 return 0; 282 return baud; 283 } 284 285 286 static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state) 287 { 288 struct usb_serial_port *port = tty->driver_data; 289 struct usb_serial *serial = port->serial; 290 int value; 291 int result; 292 293 if (break_state == -1) 294 value = 1; /* start break */ 295 else 296 value = 0; /* clear break */ 297 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 298 4, /* set break */ 299 USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, 300 value, 0, NULL, 0, 2000); 301 if (result < 0) 302 dev_dbg(&port->dev, "%s - error %d from usb_control_msg\n", 303 __func__, result); 304 /* there is something funky about this.. the TCSBRK that 'cu' performs 305 ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4 306 seconds apart, but it feels like the break sent isn't as long as it 307 is on /dev/ttyS0 */ 308 } 309 310 311 static void keyspan_pda_set_termios(struct tty_struct *tty, 312 struct usb_serial_port *port, struct ktermios *old_termios) 313 { 314 struct usb_serial *serial = port->serial; 315 speed_t speed; 316 317 /* cflag specifies lots of stuff: number of stop bits, parity, number 318 of data bits, baud. What can the device actually handle?: 319 CSTOPB (1 stop bit or 2) 320 PARENB (parity) 321 CSIZE (5bit .. 8bit) 322 There is minimal hw support for parity (a PSW bit seems to hold the 323 parity of whatever is in the accumulator). The UART either deals 324 with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data, 325 1 special, stop). So, with firmware changes, we could do: 326 8N1: 10 bit 327 8N2: 11 bit, extra bit always (mark?) 328 8[EOMS]1: 11 bit, extra bit is parity 329 7[EOMS]1: 10 bit, b0/b7 is parity 330 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?) 331 332 HW flow control is dictated by the tty->termios.c_cflags & CRTSCTS 333 bit. 334 335 For now, just do baud. */ 336 337 speed = tty_get_baud_rate(tty); 338 speed = keyspan_pda_setbaud(serial, speed); 339 340 if (speed == 0) { 341 dev_dbg(&port->dev, "can't handle requested baud rate\n"); 342 /* It hasn't changed so.. */ 343 speed = tty_termios_baud_rate(old_termios); 344 } 345 /* Only speed can change so copy the old h/w parameters 346 then encode the new speed */ 347 tty_termios_copy_hw(&tty->termios, old_termios); 348 tty_encode_baud_rate(tty, speed, speed); 349 } 350 351 352 /* modem control pins: DTR and RTS are outputs and can be controlled. 353 DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be 354 read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */ 355 356 static int keyspan_pda_get_modem_info(struct usb_serial *serial, 357 unsigned char *value) 358 { 359 int rc; 360 u8 *data; 361 362 data = kmalloc(1, GFP_KERNEL); 363 if (!data) 364 return -ENOMEM; 365 366 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 367 3, /* get pins */ 368 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, 369 0, 0, data, 1, 2000); 370 if (rc >= 0) 371 *value = *data; 372 373 kfree(data); 374 return rc; 375 } 376 377 378 static int keyspan_pda_set_modem_info(struct usb_serial *serial, 379 unsigned char value) 380 { 381 int rc; 382 rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 383 3, /* set pins */ 384 USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT, 385 value, 0, NULL, 0, 2000); 386 return rc; 387 } 388 389 static int keyspan_pda_tiocmget(struct tty_struct *tty) 390 { 391 struct usb_serial_port *port = tty->driver_data; 392 struct usb_serial *serial = port->serial; 393 int rc; 394 unsigned char status; 395 int value; 396 397 rc = keyspan_pda_get_modem_info(serial, &status); 398 if (rc < 0) 399 return rc; 400 value = 401 ((status & (1<<7)) ? TIOCM_DTR : 0) | 402 ((status & (1<<6)) ? TIOCM_CAR : 0) | 403 ((status & (1<<5)) ? TIOCM_RNG : 0) | 404 ((status & (1<<4)) ? TIOCM_DSR : 0) | 405 ((status & (1<<3)) ? TIOCM_CTS : 0) | 406 ((status & (1<<2)) ? TIOCM_RTS : 0); 407 return value; 408 } 409 410 static int keyspan_pda_tiocmset(struct tty_struct *tty, 411 unsigned int set, unsigned int clear) 412 { 413 struct usb_serial_port *port = tty->driver_data; 414 struct usb_serial *serial = port->serial; 415 int rc; 416 unsigned char status; 417 418 rc = keyspan_pda_get_modem_info(serial, &status); 419 if (rc < 0) 420 return rc; 421 422 if (set & TIOCM_RTS) 423 status |= (1<<2); 424 if (set & TIOCM_DTR) 425 status |= (1<<7); 426 427 if (clear & TIOCM_RTS) 428 status &= ~(1<<2); 429 if (clear & TIOCM_DTR) 430 status &= ~(1<<7); 431 rc = keyspan_pda_set_modem_info(serial, status); 432 return rc; 433 } 434 435 static int keyspan_pda_write(struct tty_struct *tty, 436 struct usb_serial_port *port, const unsigned char *buf, int count) 437 { 438 struct usb_serial *serial = port->serial; 439 int request_unthrottle = 0; 440 int rc = 0; 441 struct keyspan_pda_private *priv; 442 443 priv = usb_get_serial_port_data(port); 444 /* guess how much room is left in the device's ring buffer, and if we 445 want to send more than that, check first, updating our notion of 446 what is left. If our write will result in no room left, ask the 447 device to give us an interrupt when the room available rises above 448 a threshold, and hold off all writers (eventually, those using 449 select() or poll() too) until we receive that unthrottle interrupt. 450 Block if we can't write anything at all, otherwise write as much as 451 we can. */ 452 if (count == 0) { 453 dev_dbg(&port->dev, "write request of 0 bytes\n"); 454 return 0; 455 } 456 457 /* we might block because of: 458 the TX urb is in-flight (wait until it completes) 459 the device is full (wait until it says there is room) 460 */ 461 spin_lock_bh(&port->lock); 462 if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled) { 463 spin_unlock_bh(&port->lock); 464 return 0; 465 } 466 clear_bit(0, &port->write_urbs_free); 467 spin_unlock_bh(&port->lock); 468 469 /* At this point the URB is in our control, nobody else can submit it 470 again (the only sudden transition was the one from EINPROGRESS to 471 finished). Also, the tx process is not throttled. So we are 472 ready to write. */ 473 474 count = (count > port->bulk_out_size) ? port->bulk_out_size : count; 475 476 /* Check if we might overrun the Tx buffer. If so, ask the 477 device how much room it really has. This is done only on 478 scheduler time, since usb_control_msg() sleeps. */ 479 if (count > priv->tx_room && !in_interrupt()) { 480 u8 *room; 481 482 room = kmalloc(1, GFP_KERNEL); 483 if (!room) { 484 rc = -ENOMEM; 485 goto exit; 486 } 487 488 rc = usb_control_msg(serial->dev, 489 usb_rcvctrlpipe(serial->dev, 0), 490 6, /* write_room */ 491 USB_TYPE_VENDOR | USB_RECIP_INTERFACE 492 | USB_DIR_IN, 493 0, /* value: 0 means "remaining room" */ 494 0, /* index */ 495 room, 496 1, 497 2000); 498 if (rc > 0) { 499 dev_dbg(&port->dev, "roomquery says %d\n", *room); 500 priv->tx_room = *room; 501 } 502 kfree(room); 503 if (rc < 0) { 504 dev_dbg(&port->dev, "roomquery failed\n"); 505 goto exit; 506 } 507 if (rc == 0) { 508 dev_dbg(&port->dev, "roomquery returned 0 bytes\n"); 509 rc = -EIO; /* device didn't return any data */ 510 goto exit; 511 } 512 } 513 if (count > priv->tx_room) { 514 /* we're about to completely fill the Tx buffer, so 515 we'll be throttled afterwards. */ 516 count = priv->tx_room; 517 request_unthrottle = 1; 518 } 519 520 if (count) { 521 /* now transfer data */ 522 memcpy(port->write_urb->transfer_buffer, buf, count); 523 /* send the data out the bulk port */ 524 port->write_urb->transfer_buffer_length = count; 525 526 priv->tx_room -= count; 527 528 rc = usb_submit_urb(port->write_urb, GFP_ATOMIC); 529 if (rc) { 530 dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed\n"); 531 goto exit; 532 } 533 } else { 534 /* There wasn't any room left, so we are throttled until 535 the buffer empties a bit */ 536 request_unthrottle = 1; 537 } 538 539 if (request_unthrottle) { 540 priv->tx_throttled = 1; /* block writers */ 541 schedule_work(&priv->unthrottle_work); 542 } 543 544 rc = count; 545 exit: 546 if (rc < 0) 547 set_bit(0, &port->write_urbs_free); 548 return rc; 549 } 550 551 552 static void keyspan_pda_write_bulk_callback(struct urb *urb) 553 { 554 struct usb_serial_port *port = urb->context; 555 struct keyspan_pda_private *priv; 556 557 set_bit(0, &port->write_urbs_free); 558 priv = usb_get_serial_port_data(port); 559 560 /* queue up a wakeup at scheduler time */ 561 schedule_work(&priv->wakeup_work); 562 } 563 564 565 static int keyspan_pda_write_room(struct tty_struct *tty) 566 { 567 struct usb_serial_port *port = tty->driver_data; 568 struct keyspan_pda_private *priv; 569 priv = usb_get_serial_port_data(port); 570 /* used by n_tty.c for processing of tabs and such. Giving it our 571 conservative guess is probably good enough, but needs testing by 572 running a console through the device. */ 573 return priv->tx_room; 574 } 575 576 577 static int keyspan_pda_chars_in_buffer(struct tty_struct *tty) 578 { 579 struct usb_serial_port *port = tty->driver_data; 580 struct keyspan_pda_private *priv; 581 unsigned long flags; 582 int ret = 0; 583 584 priv = usb_get_serial_port_data(port); 585 586 /* when throttled, return at least WAKEUP_CHARS to tell select() (via 587 n_tty.c:normal_poll() ) that we're not writeable. */ 588 589 spin_lock_irqsave(&port->lock, flags); 590 if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled) 591 ret = 256; 592 spin_unlock_irqrestore(&port->lock, flags); 593 return ret; 594 } 595 596 597 static void keyspan_pda_dtr_rts(struct usb_serial_port *port, int on) 598 { 599 struct usb_serial *serial = port->serial; 600 601 if (serial->dev) { 602 if (on) 603 keyspan_pda_set_modem_info(serial, (1<<7) | (1<< 2)); 604 else 605 keyspan_pda_set_modem_info(serial, 0); 606 } 607 } 608 609 610 static int keyspan_pda_open(struct tty_struct *tty, 611 struct usb_serial_port *port) 612 { 613 struct usb_serial *serial = port->serial; 614 u8 *room; 615 int rc = 0; 616 struct keyspan_pda_private *priv; 617 618 /* find out how much room is in the Tx ring */ 619 room = kmalloc(1, GFP_KERNEL); 620 if (!room) 621 return -ENOMEM; 622 623 rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 624 6, /* write_room */ 625 USB_TYPE_VENDOR | USB_RECIP_INTERFACE 626 | USB_DIR_IN, 627 0, /* value */ 628 0, /* index */ 629 room, 630 1, 631 2000); 632 if (rc < 0) { 633 dev_dbg(&port->dev, "%s - roomquery failed\n", __func__); 634 goto error; 635 } 636 if (rc == 0) { 637 dev_dbg(&port->dev, "%s - roomquery returned 0 bytes\n", __func__); 638 rc = -EIO; 639 goto error; 640 } 641 priv = usb_get_serial_port_data(port); 642 priv->tx_room = *room; 643 priv->tx_throttled = *room ? 0 : 1; 644 645 /*Start reading from the device*/ 646 rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 647 if (rc) { 648 dev_dbg(&port->dev, "%s - usb_submit_urb(read int) failed\n", __func__); 649 goto error; 650 } 651 error: 652 kfree(room); 653 return rc; 654 } 655 static void keyspan_pda_close(struct usb_serial_port *port) 656 { 657 struct usb_serial *serial = port->serial; 658 659 if (serial->dev) { 660 /* shutdown our bulk reads and writes */ 661 usb_kill_urb(port->write_urb); 662 usb_kill_urb(port->interrupt_in_urb); 663 } 664 } 665 666 667 /* download the firmware to a "fake" device (pre-renumeration) */ 668 static int keyspan_pda_fake_startup(struct usb_serial *serial) 669 { 670 int response; 671 const char *fw_name; 672 673 /* download the firmware here ... */ 674 response = ezusb_fx1_set_reset(serial->dev, 1); 675 676 if (0) { ; } 677 #ifdef KEYSPAN 678 else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID) 679 fw_name = "keyspan_pda/keyspan_pda.fw"; 680 #endif 681 #ifdef XIRCOM 682 else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) || 683 (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID)) 684 fw_name = "keyspan_pda/xircom_pgs.fw"; 685 #endif 686 else { 687 dev_err(&serial->dev->dev, "%s: unknown vendor, aborting.\n", 688 __func__); 689 return -ENODEV; 690 } 691 692 if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) { 693 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n", 694 fw_name); 695 return -ENOENT; 696 } 697 698 /* after downloading firmware Renumeration will occur in a 699 moment and the new device will bind to the real driver */ 700 701 /* we want this device to fail to have a driver assigned to it. */ 702 return 1; 703 } 704 705 #ifdef KEYSPAN 706 MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw"); 707 #endif 708 #ifdef XIRCOM 709 MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw"); 710 #endif 711 712 static int keyspan_pda_port_probe(struct usb_serial_port *port) 713 { 714 715 struct keyspan_pda_private *priv; 716 717 priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL); 718 if (!priv) 719 return -ENOMEM; 720 721 INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write); 722 INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle); 723 priv->serial = port->serial; 724 priv->port = port; 725 726 usb_set_serial_port_data(port, priv); 727 728 return 0; 729 } 730 731 static int keyspan_pda_port_remove(struct usb_serial_port *port) 732 { 733 struct keyspan_pda_private *priv; 734 735 priv = usb_get_serial_port_data(port); 736 kfree(priv); 737 738 return 0; 739 } 740 741 #ifdef KEYSPAN 742 static struct usb_serial_driver keyspan_pda_fake_device = { 743 .driver = { 744 .owner = THIS_MODULE, 745 .name = "keyspan_pda_pre", 746 }, 747 .description = "Keyspan PDA - (prerenumeration)", 748 .id_table = id_table_fake, 749 .num_ports = 1, 750 .attach = keyspan_pda_fake_startup, 751 }; 752 #endif 753 754 #ifdef XIRCOM 755 static struct usb_serial_driver xircom_pgs_fake_device = { 756 .driver = { 757 .owner = THIS_MODULE, 758 .name = "xircom_no_firm", 759 }, 760 .description = "Xircom / Entregra PGS - (prerenumeration)", 761 .id_table = id_table_fake_xircom, 762 .num_ports = 1, 763 .attach = keyspan_pda_fake_startup, 764 }; 765 #endif 766 767 static struct usb_serial_driver keyspan_pda_device = { 768 .driver = { 769 .owner = THIS_MODULE, 770 .name = "keyspan_pda", 771 }, 772 .description = "Keyspan PDA", 773 .id_table = id_table_std, 774 .num_ports = 1, 775 .dtr_rts = keyspan_pda_dtr_rts, 776 .open = keyspan_pda_open, 777 .close = keyspan_pda_close, 778 .write = keyspan_pda_write, 779 .write_room = keyspan_pda_write_room, 780 .write_bulk_callback = keyspan_pda_write_bulk_callback, 781 .read_int_callback = keyspan_pda_rx_interrupt, 782 .chars_in_buffer = keyspan_pda_chars_in_buffer, 783 .throttle = keyspan_pda_rx_throttle, 784 .unthrottle = keyspan_pda_rx_unthrottle, 785 .set_termios = keyspan_pda_set_termios, 786 .break_ctl = keyspan_pda_break_ctl, 787 .tiocmget = keyspan_pda_tiocmget, 788 .tiocmset = keyspan_pda_tiocmset, 789 .port_probe = keyspan_pda_port_probe, 790 .port_remove = keyspan_pda_port_remove, 791 }; 792 793 static struct usb_serial_driver * const serial_drivers[] = { 794 &keyspan_pda_device, 795 #ifdef KEYSPAN 796 &keyspan_pda_fake_device, 797 #endif 798 #ifdef XIRCOM 799 &xircom_pgs_fake_device, 800 #endif 801 NULL 802 }; 803 804 module_usb_serial_driver(serial_drivers, id_table_combined); 805 806 MODULE_AUTHOR(DRIVER_AUTHOR); 807 MODULE_DESCRIPTION(DRIVER_DESC); 808 MODULE_LICENSE("GPL"); 809