1 /* 2 * usb-serial driver for Quatech SSU-100 3 * 4 * based on ftdi_sio.c and the original serqt_usb.c from Quatech 5 * 6 */ 7 8 #include <linux/errno.h> 9 #include <linux/init.h> 10 #include <linux/slab.h> 11 #include <linux/tty.h> 12 #include <linux/tty_driver.h> 13 #include <linux/tty_flip.h> 14 #include <linux/module.h> 15 #include <linux/serial.h> 16 #include <linux/usb.h> 17 #include <linux/usb/serial.h> 18 #include <linux/serial_reg.h> 19 #include <linux/uaccess.h> 20 21 #define QT_OPEN_CLOSE_CHANNEL 0xca 22 #define QT_SET_GET_DEVICE 0xc2 23 #define QT_SET_GET_REGISTER 0xc0 24 #define QT_GET_SET_PREBUF_TRIG_LVL 0xcc 25 #define QT_SET_ATF 0xcd 26 #define QT_GET_SET_UART 0xc1 27 #define QT_TRANSFER_IN 0xc0 28 #define QT_HW_FLOW_CONTROL_MASK 0xc5 29 #define QT_SW_FLOW_CONTROL_MASK 0xc6 30 31 #define SERIAL_MSR_MASK 0xf0 32 33 #define SERIAL_CRTSCTS ((UART_MCR_RTS << 8) | UART_MSR_CTS) 34 35 #define SERIAL_EVEN_PARITY (UART_LCR_PARITY | UART_LCR_EPAR) 36 37 #define MAX_BAUD_RATE 460800 38 39 #define ATC_DISABLED 0x00 40 #define DUPMODE_BITS 0xc0 41 #define RR_BITS 0x03 42 #define LOOPMODE_BITS 0x41 43 #define RS232_MODE 0x00 44 #define RTSCTS_TO_CONNECTOR 0x40 45 #define CLKS_X4 0x02 46 #define FULLPWRBIT 0x00000080 47 #define NEXT_BOARD_POWER_BIT 0x00000004 48 49 static int debug = 1; 50 51 /* Version Information */ 52 #define DRIVER_VERSION "v0.1" 53 #define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver" 54 55 #define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */ 56 #define QUATECH_SSU100 0xC020 /* SSU100 */ 57 58 static const struct usb_device_id id_table[] = { 59 {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)}, 60 {} /* Terminating entry */ 61 }; 62 63 MODULE_DEVICE_TABLE(usb, id_table); 64 65 66 static struct usb_driver ssu100_driver = { 67 .name = "ssu100", 68 .probe = usb_serial_probe, 69 .disconnect = usb_serial_disconnect, 70 .id_table = id_table, 71 .suspend = usb_serial_suspend, 72 .resume = usb_serial_resume, 73 .no_dynamic_id = 1, 74 .supports_autosuspend = 1, 75 }; 76 77 struct ssu100_port_private { 78 spinlock_t status_lock; 79 u8 shadowLSR; 80 u8 shadowMSR; 81 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ 82 unsigned short max_packet_size; 83 struct async_icount icount; 84 }; 85 86 static void ssu100_release(struct usb_serial *serial) 87 { 88 struct ssu100_port_private *priv = usb_get_serial_port_data(*serial->port); 89 90 dbg("%s", __func__); 91 kfree(priv); 92 } 93 94 static inline int ssu100_control_msg(struct usb_device *dev, 95 u8 request, u16 data, u16 index) 96 { 97 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 98 request, 0x40, data, index, 99 NULL, 0, 300); 100 } 101 102 static inline int ssu100_setdevice(struct usb_device *dev, u8 *data) 103 { 104 u16 x = ((u16)(data[1] << 8) | (u16)(data[0])); 105 106 return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0); 107 } 108 109 110 static inline int ssu100_getdevice(struct usb_device *dev, u8 *data) 111 { 112 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 113 QT_SET_GET_DEVICE, 0xc0, 0, 0, 114 data, 3, 300); 115 } 116 117 static inline int ssu100_getregister(struct usb_device *dev, 118 unsigned short uart, 119 unsigned short reg, 120 u8 *data) 121 { 122 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 123 QT_SET_GET_REGISTER, 0xc0, reg, 124 uart, data, sizeof(*data), 300); 125 126 } 127 128 129 static inline int ssu100_setregister(struct usb_device *dev, 130 unsigned short uart, 131 unsigned short reg, 132 u16 data) 133 { 134 u16 value = (data << 8) | reg; 135 136 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 137 QT_SET_GET_REGISTER, 0x40, value, uart, 138 NULL, 0, 300); 139 140 } 141 142 #define set_mctrl(dev, set) update_mctrl((dev), (set), 0) 143 #define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear)) 144 145 /* these do not deal with device that have more than 1 port */ 146 static inline int update_mctrl(struct usb_device *dev, unsigned int set, 147 unsigned int clear) 148 { 149 unsigned urb_value; 150 int result; 151 152 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) { 153 dbg("%s - DTR|RTS not being set|cleared", __func__); 154 return 0; /* no change */ 155 } 156 157 clear &= ~set; /* 'set' takes precedence over 'clear' */ 158 urb_value = 0; 159 if (set & TIOCM_DTR) 160 urb_value |= UART_MCR_DTR; 161 if (set & TIOCM_RTS) 162 urb_value |= UART_MCR_RTS; 163 164 result = ssu100_setregister(dev, 0, UART_MCR, urb_value); 165 if (result < 0) 166 dbg("%s Error from MODEM_CTRL urb", __func__); 167 168 return result; 169 } 170 171 static int ssu100_initdevice(struct usb_device *dev) 172 { 173 u8 *data; 174 int result = 0; 175 176 dbg("%s", __func__); 177 178 data = kzalloc(3, GFP_KERNEL); 179 if (!data) 180 return -ENOMEM; 181 182 result = ssu100_getdevice(dev, data); 183 if (result < 0) { 184 dbg("%s - get_device failed %i", __func__, result); 185 goto out; 186 } 187 188 data[1] &= ~FULLPWRBIT; 189 190 result = ssu100_setdevice(dev, data); 191 if (result < 0) { 192 dbg("%s - setdevice failed %i", __func__, result); 193 goto out; 194 } 195 196 result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0); 197 if (result < 0) { 198 dbg("%s - set prebuffer level failed %i", __func__, result); 199 goto out; 200 } 201 202 result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0); 203 if (result < 0) { 204 dbg("%s - set ATFprebuffer level failed %i", __func__, result); 205 goto out; 206 } 207 208 result = ssu100_getdevice(dev, data); 209 if (result < 0) { 210 dbg("%s - get_device failed %i", __func__, result); 211 goto out; 212 } 213 214 data[0] &= ~(RR_BITS | DUPMODE_BITS); 215 data[0] |= CLKS_X4; 216 data[1] &= ~(LOOPMODE_BITS); 217 data[1] |= RS232_MODE; 218 219 result = ssu100_setdevice(dev, data); 220 if (result < 0) { 221 dbg("%s - setdevice failed %i", __func__, result); 222 goto out; 223 } 224 225 out: kfree(data); 226 return result; 227 228 } 229 230 231 static void ssu100_set_termios(struct tty_struct *tty, 232 struct usb_serial_port *port, 233 struct ktermios *old_termios) 234 { 235 struct usb_device *dev = port->serial->dev; 236 struct ktermios *termios = tty->termios; 237 u16 baud, divisor, remainder; 238 unsigned int cflag = termios->c_cflag; 239 u16 urb_value = 0; /* will hold the new flags */ 240 int result; 241 242 dbg("%s", __func__); 243 244 if (cflag & PARENB) { 245 if (cflag & PARODD) 246 urb_value |= UART_LCR_PARITY; 247 else 248 urb_value |= SERIAL_EVEN_PARITY; 249 } 250 251 switch (cflag & CSIZE) { 252 case CS5: 253 urb_value |= UART_LCR_WLEN5; 254 break; 255 case CS6: 256 urb_value |= UART_LCR_WLEN6; 257 break; 258 case CS7: 259 urb_value |= UART_LCR_WLEN7; 260 break; 261 default: 262 case CS8: 263 urb_value |= UART_LCR_WLEN8; 264 break; 265 } 266 267 baud = tty_get_baud_rate(tty); 268 if (!baud) 269 baud = 9600; 270 271 dbg("%s - got baud = %d\n", __func__, baud); 272 273 274 divisor = MAX_BAUD_RATE / baud; 275 remainder = MAX_BAUD_RATE % baud; 276 if (((remainder * 2) >= baud) && (baud != 110)) 277 divisor++; 278 279 urb_value = urb_value << 8; 280 281 result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value); 282 if (result < 0) 283 dbg("%s - set uart failed", __func__); 284 285 if (cflag & CRTSCTS) 286 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK, 287 SERIAL_CRTSCTS, 0); 288 else 289 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK, 290 0, 0); 291 if (result < 0) 292 dbg("%s - set HW flow control failed", __func__); 293 294 if (I_IXOFF(tty) || I_IXON(tty)) { 295 u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty))); 296 297 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK, 298 x, 0); 299 } else 300 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK, 301 0, 0); 302 303 if (result < 0) 304 dbg("%s - set SW flow control failed", __func__); 305 306 } 307 308 309 static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port) 310 { 311 struct usb_device *dev = port->serial->dev; 312 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 313 u8 *data; 314 int result; 315 unsigned long flags; 316 317 dbg("%s - port %d", __func__, port->number); 318 319 data = kzalloc(2, GFP_KERNEL); 320 if (!data) 321 return -ENOMEM; 322 323 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 324 QT_OPEN_CLOSE_CHANNEL, 325 QT_TRANSFER_IN, 0x01, 326 0, data, 2, 300); 327 if (result < 0) { 328 dbg("%s - open failed %i", __func__, result); 329 kfree(data); 330 return result; 331 } 332 333 spin_lock_irqsave(&priv->status_lock, flags); 334 priv->shadowLSR = data[0]; 335 priv->shadowMSR = data[1]; 336 spin_unlock_irqrestore(&priv->status_lock, flags); 337 338 kfree(data); 339 340 /* set to 9600 */ 341 result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300); 342 if (result < 0) 343 dbg("%s - set uart failed", __func__); 344 345 if (tty) 346 ssu100_set_termios(tty, port, tty->termios); 347 348 return usb_serial_generic_open(tty, port); 349 } 350 351 static void ssu100_close(struct usb_serial_port *port) 352 { 353 dbg("%s", __func__); 354 usb_serial_generic_close(port); 355 } 356 357 static int get_serial_info(struct usb_serial_port *port, 358 struct serial_struct __user *retinfo) 359 { 360 struct serial_struct tmp; 361 362 if (!retinfo) 363 return -EFAULT; 364 365 memset(&tmp, 0, sizeof(tmp)); 366 tmp.line = port->serial->minor; 367 tmp.port = 0; 368 tmp.irq = 0; 369 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 370 tmp.xmit_fifo_size = port->bulk_out_size; 371 tmp.baud_base = 9600; 372 tmp.close_delay = 5*HZ; 373 tmp.closing_wait = 30*HZ; 374 375 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 376 return -EFAULT; 377 return 0; 378 } 379 380 static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) 381 { 382 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 383 struct async_icount prev, cur; 384 unsigned long flags; 385 386 spin_lock_irqsave(&priv->status_lock, flags); 387 prev = priv->icount; 388 spin_unlock_irqrestore(&priv->status_lock, flags); 389 390 while (1) { 391 wait_event_interruptible(priv->delta_msr_wait, 392 ((priv->icount.rng != prev.rng) || 393 (priv->icount.dsr != prev.dsr) || 394 (priv->icount.dcd != prev.dcd) || 395 (priv->icount.cts != prev.cts))); 396 397 if (signal_pending(current)) 398 return -ERESTARTSYS; 399 400 spin_lock_irqsave(&priv->status_lock, flags); 401 cur = priv->icount; 402 spin_unlock_irqrestore(&priv->status_lock, flags); 403 404 if ((prev.rng == cur.rng) && 405 (prev.dsr == cur.dsr) && 406 (prev.dcd == cur.dcd) && 407 (prev.cts == cur.cts)) 408 return -EIO; 409 410 if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) || 411 (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) || 412 (arg & TIOCM_CD && (prev.dcd != cur.dcd)) || 413 (arg & TIOCM_CTS && (prev.cts != cur.cts))) 414 return 0; 415 } 416 return 0; 417 } 418 419 static int ssu100_ioctl(struct tty_struct *tty, struct file *file, 420 unsigned int cmd, unsigned long arg) 421 { 422 struct usb_serial_port *port = tty->driver_data; 423 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 424 void __user *user_arg = (void __user *)arg; 425 426 dbg("%s cmd 0x%04x", __func__, cmd); 427 428 switch (cmd) { 429 case TIOCGSERIAL: 430 return get_serial_info(port, 431 (struct serial_struct __user *) arg); 432 433 case TIOCMIWAIT: 434 return wait_modem_info(port, arg); 435 436 case TIOCGICOUNT: 437 { 438 struct serial_icounter_struct icount; 439 struct async_icount cnow = priv->icount; 440 memset(&icount, 0, sizeof(icount)); 441 icount.cts = cnow.cts; 442 icount.dsr = cnow.dsr; 443 icount.rng = cnow.rng; 444 icount.dcd = cnow.dcd; 445 icount.rx = cnow.rx; 446 icount.tx = cnow.tx; 447 icount.frame = cnow.frame; 448 icount.overrun = cnow.overrun; 449 icount.parity = cnow.parity; 450 icount.brk = cnow.brk; 451 icount.buf_overrun = cnow.buf_overrun; 452 if (copy_to_user(user_arg, &icount, sizeof(icount))) 453 return -EFAULT; 454 return 0; 455 } 456 457 default: 458 break; 459 } 460 461 dbg("%s arg not supported", __func__); 462 463 return -ENOIOCTLCMD; 464 } 465 466 static void ssu100_set_max_packet_size(struct usb_serial_port *port) 467 { 468 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 469 struct usb_serial *serial = port->serial; 470 struct usb_device *udev = serial->dev; 471 472 struct usb_interface *interface = serial->interface; 473 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc; 474 475 unsigned num_endpoints; 476 int i; 477 unsigned long flags; 478 479 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints; 480 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints); 481 482 for (i = 0; i < num_endpoints; i++) { 483 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1, 484 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize); 485 ep_desc = &interface->cur_altsetting->endpoint[i].desc; 486 } 487 488 /* set max packet size based on descriptor */ 489 spin_lock_irqsave(&priv->status_lock, flags); 490 priv->max_packet_size = ep_desc->wMaxPacketSize; 491 spin_unlock_irqrestore(&priv->status_lock, flags); 492 493 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size); 494 } 495 496 static int ssu100_attach(struct usb_serial *serial) 497 { 498 struct ssu100_port_private *priv; 499 struct usb_serial_port *port = *serial->port; 500 501 dbg("%s", __func__); 502 503 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 504 if (!priv) { 505 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__, 506 sizeof(*priv)); 507 return -ENOMEM; 508 } 509 510 spin_lock_init(&priv->status_lock); 511 init_waitqueue_head(&priv->delta_msr_wait); 512 usb_set_serial_port_data(port, priv); 513 ssu100_set_max_packet_size(port); 514 515 return ssu100_initdevice(serial->dev); 516 } 517 518 static int ssu100_tiocmget(struct tty_struct *tty, struct file *file) 519 { 520 struct usb_serial_port *port = tty->driver_data; 521 struct usb_device *dev = port->serial->dev; 522 u8 *d; 523 int r; 524 525 dbg("%s\n", __func__); 526 527 d = kzalloc(2, GFP_KERNEL); 528 if (!d) 529 return -ENOMEM; 530 531 r = ssu100_getregister(dev, 0, UART_MCR, d); 532 if (r < 0) 533 goto mget_out; 534 535 r = ssu100_getregister(dev, 0, UART_MSR, d+1); 536 if (r < 0) 537 goto mget_out; 538 539 r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) | 540 (d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) | 541 (d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) | 542 (d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) | 543 (d[1] & UART_MSR_RI ? TIOCM_RI : 0) | 544 (d[1] & UART_MSR_DSR ? TIOCM_DSR : 0); 545 546 mget_out: 547 kfree(d); 548 return r; 549 } 550 551 static int ssu100_tiocmset(struct tty_struct *tty, struct file *file, 552 unsigned int set, unsigned int clear) 553 { 554 struct usb_serial_port *port = tty->driver_data; 555 struct usb_device *dev = port->serial->dev; 556 557 dbg("%s\n", __func__); 558 return update_mctrl(dev, set, clear); 559 } 560 561 static void ssu100_dtr_rts(struct usb_serial_port *port, int on) 562 { 563 struct usb_device *dev = port->serial->dev; 564 565 dbg("%s\n", __func__); 566 567 mutex_lock(&port->serial->disc_mutex); 568 if (!port->serial->disconnected) { 569 /* Disable flow control */ 570 if (!on && 571 ssu100_setregister(dev, 0, UART_MCR, 0) < 0) 572 dev_err(&port->dev, "error from flowcontrol urb\n"); 573 /* drop RTS and DTR */ 574 if (on) 575 set_mctrl(dev, TIOCM_DTR | TIOCM_RTS); 576 else 577 clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS); 578 } 579 mutex_unlock(&port->serial->disc_mutex); 580 } 581 582 static void ssu100_update_msr(struct usb_serial_port *port, u8 msr) 583 { 584 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 585 unsigned long flags; 586 587 spin_lock_irqsave(&priv->status_lock, flags); 588 priv->shadowMSR = msr; 589 spin_unlock_irqrestore(&priv->status_lock, flags); 590 591 if (msr & UART_MSR_ANY_DELTA) { 592 /* update input line counters */ 593 if (msr & UART_MSR_DCTS) 594 priv->icount.cts++; 595 if (msr & UART_MSR_DDSR) 596 priv->icount.dsr++; 597 if (msr & UART_MSR_DDCD) 598 priv->icount.dcd++; 599 if (msr & UART_MSR_TERI) 600 priv->icount.rng++; 601 wake_up_interruptible(&priv->delta_msr_wait); 602 } 603 } 604 605 static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr, 606 char *tty_flag) 607 { 608 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 609 unsigned long flags; 610 611 spin_lock_irqsave(&priv->status_lock, flags); 612 priv->shadowLSR = lsr; 613 spin_unlock_irqrestore(&priv->status_lock, flags); 614 615 *tty_flag = TTY_NORMAL; 616 if (lsr & UART_LSR_BRK_ERROR_BITS) { 617 /* we always want to update icount, but we only want to 618 * update tty_flag for one case */ 619 if (lsr & UART_LSR_BI) { 620 priv->icount.brk++; 621 *tty_flag = TTY_BREAK; 622 usb_serial_handle_break(port); 623 } 624 if (lsr & UART_LSR_PE) { 625 priv->icount.parity++; 626 if (*tty_flag == TTY_NORMAL) 627 *tty_flag = TTY_PARITY; 628 } 629 if (lsr & UART_LSR_FE) { 630 priv->icount.frame++; 631 if (*tty_flag == TTY_NORMAL) 632 *tty_flag = TTY_FRAME; 633 } 634 if (lsr & UART_LSR_OE){ 635 priv->icount.overrun++; 636 if (*tty_flag == TTY_NORMAL) 637 *tty_flag = TTY_OVERRUN; 638 } 639 } 640 641 } 642 643 static int ssu100_process_packet(struct tty_struct *tty, 644 struct usb_serial_port *port, 645 struct ssu100_port_private *priv, 646 char *packet, int len) 647 { 648 int i; 649 char flag = TTY_NORMAL; 650 char *ch; 651 652 dbg("%s - port %d", __func__, port->number); 653 654 if ((len >= 4) && 655 (packet[0] == 0x1b) && (packet[1] == 0x1b) && 656 ((packet[2] == 0x00) || (packet[2] == 0x01))) { 657 if (packet[2] == 0x00) { 658 ssu100_update_lsr(port, packet[3], &flag); 659 if (flag == TTY_OVERRUN) 660 tty_insert_flip_char(tty, 0, TTY_OVERRUN); 661 } 662 if (packet[2] == 0x01) 663 ssu100_update_msr(port, packet[3]); 664 665 len -= 4; 666 ch = packet + 4; 667 } else 668 ch = packet; 669 670 if (!len) 671 return 0; /* status only */ 672 673 if (port->port.console && port->sysrq) { 674 for (i = 0; i < len; i++, ch++) { 675 if (!usb_serial_handle_sysrq_char(port, *ch)) 676 tty_insert_flip_char(tty, *ch, flag); 677 } 678 } else 679 tty_insert_flip_string_fixed_flag(tty, ch, flag, len); 680 681 return len; 682 } 683 684 static void ssu100_process_read_urb(struct urb *urb) 685 { 686 struct usb_serial_port *port = urb->context; 687 struct ssu100_port_private *priv = usb_get_serial_port_data(port); 688 char *data = (char *)urb->transfer_buffer; 689 struct tty_struct *tty; 690 int count = 0; 691 int i; 692 int len; 693 694 dbg("%s", __func__); 695 696 tty = tty_port_tty_get(&port->port); 697 if (!tty) 698 return; 699 700 for (i = 0; i < urb->actual_length; i += priv->max_packet_size) { 701 len = min_t(int, urb->actual_length - i, priv->max_packet_size); 702 count += ssu100_process_packet(tty, port, priv, &data[i], len); 703 } 704 705 if (count) 706 tty_flip_buffer_push(tty); 707 tty_kref_put(tty); 708 } 709 710 static struct usb_serial_driver ssu100_device = { 711 .driver = { 712 .owner = THIS_MODULE, 713 .name = "ssu100", 714 }, 715 .description = DRIVER_DESC, 716 .id_table = id_table, 717 .usb_driver = &ssu100_driver, 718 .num_ports = 1, 719 .bulk_in_size = 256, 720 .bulk_out_size = 256, 721 .open = ssu100_open, 722 .close = ssu100_close, 723 .attach = ssu100_attach, 724 .release = ssu100_release, 725 .dtr_rts = ssu100_dtr_rts, 726 .process_read_urb = ssu100_process_read_urb, 727 .tiocmget = ssu100_tiocmget, 728 .tiocmset = ssu100_tiocmset, 729 .ioctl = ssu100_ioctl, 730 .set_termios = ssu100_set_termios, 731 .disconnect = usb_serial_generic_disconnect, 732 }; 733 734 static int __init ssu100_init(void) 735 { 736 int retval; 737 738 dbg("%s", __func__); 739 740 /* register with usb-serial */ 741 retval = usb_serial_register(&ssu100_device); 742 743 if (retval) 744 goto failed_usb_sio_register; 745 746 retval = usb_register(&ssu100_driver); 747 if (retval) 748 goto failed_usb_register; 749 750 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 751 DRIVER_DESC "\n"); 752 753 return 0; 754 755 failed_usb_register: 756 usb_serial_deregister(&ssu100_device); 757 failed_usb_sio_register: 758 return retval; 759 } 760 761 static void __exit ssu100_exit(void) 762 { 763 usb_deregister(&ssu100_driver); 764 usb_serial_deregister(&ssu100_device); 765 } 766 767 module_init(ssu100_init); 768 module_exit(ssu100_exit); 769 770 MODULE_DESCRIPTION(DRIVER_DESC); 771 MODULE_LICENSE("GPL"); 772 773 module_param(debug, bool, S_IRUGO | S_IWUSR); 774 MODULE_PARM_DESC(debug, "Debug enabled or not"); 775