drivers/usb/serial/f81232.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Fintek F81232 USB to serial adaptor driver
   4  *
   5  * Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
   6  * Copyright (C) 2012 Linux Foundation
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/errno.h>
  11 #include <linux/slab.h>
  12 #include <linux/tty.h>
  13 #include <linux/tty_driver.h>
  14 #include <linux/tty_flip.h>
  15 #include <linux/serial.h>
  16 #include <linux/module.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/mutex.h>
  19 #include <linux/uaccess.h>
  20 #include <linux/usb.h>
  21 #include <linux/usb/serial.h>
  22 #include <linux/serial_reg.h>
  23
  24 static const struct usb_device_id id_table[] = {
  25         { USB_DEVICE(0x1934, 0x0706) },
  26         { }                                     /* Terminating entry */
  27 };
  28 MODULE_DEVICE_TABLE(usb, id_table);
  29
  30 /* Maximum baudrate for F81232 */
  31 #define F81232_MAX_BAUDRATE             115200
  32
  33 /* USB Control EP parameter */
  34 #define F81232_REGISTER_REQUEST         0xa0
  35 #define F81232_GET_REGISTER             0xc0
  36 #define F81232_SET_REGISTER             0x40
  37
  38 #define SERIAL_BASE_ADDRESS             0x0120
  39 #define RECEIVE_BUFFER_REGISTER         (0x00 + SERIAL_BASE_ADDRESS)
  40 #define INTERRUPT_ENABLE_REGISTER       (0x01 + SERIAL_BASE_ADDRESS)
  41 #define FIFO_CONTROL_REGISTER           (0x02 + SERIAL_BASE_ADDRESS)
  42 #define LINE_CONTROL_REGISTER           (0x03 + SERIAL_BASE_ADDRESS)
  43 #define MODEM_CONTROL_REGISTER          (0x04 + SERIAL_BASE_ADDRESS)
  44 #define MODEM_STATUS_REGISTER           (0x06 + SERIAL_BASE_ADDRESS)
  45
  46 struct f81232_private {
  47         struct mutex lock;
  48         u8 modem_control;
  49         u8 modem_status;
  50         struct work_struct interrupt_work;
  51         struct usb_serial_port *port;
  52 };
  53
  54 static int calc_baud_divisor(speed_t baudrate)
  55 {
  56         return DIV_ROUND_CLOSEST(F81232_MAX_BAUDRATE, baudrate);
  57 }
  58
  59 static int f81232_get_register(struct usb_serial_port *port, u16 reg, u8 *val)
  60 {
  61         int status;
  62         u8 *tmp;
  63         struct usb_device *dev = port->serial->dev;
  64
  65         tmp = kmalloc(sizeof(*val), GFP_KERNEL);
  66         if (!tmp)
  67                 return -ENOMEM;
  68
  69         status = usb_control_msg(dev,
  70                                 usb_rcvctrlpipe(dev, 0),
  71                                 F81232_REGISTER_REQUEST,
  72                                 F81232_GET_REGISTER,
  73                                 reg,
  74                                 0,
  75                                 tmp,
  76                                 sizeof(*val),
  77                                 USB_CTRL_GET_TIMEOUT);
  78         if (status != sizeof(*val)) {
  79                 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
  80
  81                 if (status < 0)
  82                         status = usb_translate_errors(status);
  83                 else
  84                         status = -EIO;
  85         } else {
  86                 status = 0;
  87                 *val = *tmp;
  88         }
  89
  90         kfree(tmp);
  91         return status;
  92 }
  93
  94 static int f81232_set_register(struct usb_serial_port *port, u16 reg, u8 val)
  95 {
  96         int status;
  97         u8 *tmp;
  98         struct usb_device *dev = port->serial->dev;
  99
 100         tmp = kmalloc(sizeof(val), GFP_KERNEL);
 101         if (!tmp)
 102                 return -ENOMEM;
 103
 104         *tmp = val;
 105
 106         status = usb_control_msg(dev,
 107                                 usb_sndctrlpipe(dev, 0),
 108                                 F81232_REGISTER_REQUEST,
 109                                 F81232_SET_REGISTER,
 110                                 reg,
 111                                 0,
 112                                 tmp,
 113                                 sizeof(val),
 114                                 USB_CTRL_SET_TIMEOUT);
 115         if (status != sizeof(val)) {
 116                 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
 117
 118                 if (status < 0)
 119                         status = usb_translate_errors(status);
 120                 else
 121                         status = -EIO;
 122         } else {
 123                 status = 0;
 124         }
 125
 126         kfree(tmp);
 127         return status;
 128 }
 129
 130 static void f81232_read_msr(struct usb_serial_port *port)
 131 {
 132         int status;
 133         u8 current_msr;
 134         struct tty_struct *tty;
 135         struct f81232_private *priv = usb_get_serial_port_data(port);
 136
 137         mutex_lock(&priv->lock);
 138         status = f81232_get_register(port, MODEM_STATUS_REGISTER,
 139                         &current_msr);
 140         if (status) {
 141                 dev_err(&port->dev, "%s fail, status: %d\n", __func__, status);
 142                 mutex_unlock(&priv->lock);
 143                 return;
 144         }
 145
 146         if (!(current_msr & UART_MSR_ANY_DELTA)) {
 147                 mutex_unlock(&priv->lock);
 148                 return;
 149         }
 150
 151         priv->modem_status = current_msr;
 152
 153         if (current_msr & UART_MSR_DCTS)
 154                 port->icount.cts++;
 155         if (current_msr & UART_MSR_DDSR)
 156                 port->icount.dsr++;
 157         if (current_msr & UART_MSR_TERI)
 158                 port->icount.rng++;
 159         if (current_msr & UART_MSR_DDCD) {
 160                 port->icount.dcd++;
 161                 tty = tty_port_tty_get(&port->port);
 162                 if (tty) {
 163                         usb_serial_handle_dcd_change(port, tty,
 164                                         current_msr & UART_MSR_DCD);
 165
 166                         tty_kref_put(tty);
 167                 }
 168         }
 169
 170         wake_up_interruptible(&port->port.delta_msr_wait);
 171         mutex_unlock(&priv->lock);
 172 }
 173
 174 static int f81232_set_mctrl(struct usb_serial_port *port,
 175                                            unsigned int set, unsigned int clear)
 176 {
 177         u8 val;
 178         int status;
 179         struct f81232_private *priv = usb_get_serial_port_data(port);
 180
 181         if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0)
 182                 return 0;       /* no change */
 183
 184         /* 'set' takes precedence over 'clear' */
 185         clear &= ~set;
 186
 187         /* force enable interrupt with OUT2 */
 188         mutex_lock(&priv->lock);
 189         val = UART_MCR_OUT2 | priv->modem_control;
 190
 191         if (clear & TIOCM_DTR)
 192                 val &= ~UART_MCR_DTR;
 193
 194         if (clear & TIOCM_RTS)
 195                 val &= ~UART_MCR_RTS;
 196
 197         if (set & TIOCM_DTR)
 198                 val |= UART_MCR_DTR;
 199
 200         if (set & TIOCM_RTS)
 201                 val |= UART_MCR_RTS;
 202
 203         dev_dbg(&port->dev, "%s new:%02x old:%02x\n", __func__,
 204                         val, priv->modem_control);
 205
 206         status = f81232_set_register(port, MODEM_CONTROL_REGISTER, val);
 207         if (status) {
 208                 dev_err(&port->dev, "%s set MCR status < 0\n", __func__);
 209                 mutex_unlock(&priv->lock);
 210                 return status;
 211         }
 212
 213         priv->modem_control = val;
 214         mutex_unlock(&priv->lock);
 215
 216         return 0;
 217 }
 218
 219 static void f81232_update_line_status(struct usb_serial_port *port,
 220                                       unsigned char *data,
 221                                       size_t actual_length)
 222 {
 223         struct f81232_private *priv = usb_get_serial_port_data(port);
 224
 225         if (!actual_length)
 226                 return;
 227
 228         switch (data[0] & 0x07) {
 229         case 0x00: /* msr change */
 230                 dev_dbg(&port->dev, "IIR: MSR Change: %02x\n", data[0]);
 231                 schedule_work(&priv->interrupt_work);
 232                 break;
 233         case 0x02: /* tx-empty */
 234                 break;
 235         case 0x04: /* rx data available */
 236                 break;
 237         case 0x06: /* lsr change */
 238                 /* we can forget it. the LSR will read from bulk-in */
 239                 dev_dbg(&port->dev, "IIR: LSR Change: %02x\n", data[0]);
 240                 break;
 241         }
 242 }
 243
 244 static void f81232_read_int_callback(struct urb *urb)
 245 {
 246         struct usb_serial_port *port =  urb->context;
 247         unsigned char *data = urb->transfer_buffer;
 248         unsigned int actual_length = urb->actual_length;
 249         int status = urb->status;
 250         int retval;
 251
 252         switch (status) {
 253         case 0:
 254                 /* success */
 255                 break;
 256         case -ECONNRESET:
 257         case -ENOENT:
 258         case -ESHUTDOWN:
 259                 /* this urb is terminated, clean up */
 260                 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
 261                         __func__, status);
 262                 return;
 263         default:
 264                 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
 265                         __func__, status);
 266                 goto exit;
 267         }
 268
 269         usb_serial_debug_data(&port->dev, __func__,
 270                               urb->actual_length, urb->transfer_buffer);
 271
 272         f81232_update_line_status(port, data, actual_length);
 273
 274 exit:
 275         retval = usb_submit_urb(urb, GFP_ATOMIC);
 276         if (retval)
 277                 dev_err(&urb->dev->dev,
 278                         "%s - usb_submit_urb failed with result %d\n",
 279                         __func__, retval);
 280 }
 281
 282 static void f81232_process_read_urb(struct urb *urb)
 283 {
 284         struct usb_serial_port *port = urb->context;
 285         unsigned char *data = urb->transfer_buffer;
 286         char tty_flag;
 287         unsigned int i;
 288         u8 lsr;
 289
 290         /*
 291          * When opening the port we get a 1-byte packet with the current LSR,
 292          * which we discard.
 293          */
 294         if ((urb->actual_length < 2) || (urb->actual_length % 2))
 295                 return;
 296
 297         /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */
 298
 299         for (i = 0; i < urb->actual_length; i += 2) {
 300                 tty_flag = TTY_NORMAL;
 301                 lsr = data[i];
 302
 303                 if (lsr & UART_LSR_BRK_ERROR_BITS) {
 304                         if (lsr & UART_LSR_BI) {
 305                                 tty_flag = TTY_BREAK;
 306                                 port->icount.brk++;
 307                                 usb_serial_handle_break(port);
 308                         } else if (lsr & UART_LSR_PE) {
 309                                 tty_flag = TTY_PARITY;
 310                                 port->icount.parity++;
 311                         } else if (lsr & UART_LSR_FE) {
 312                                 tty_flag = TTY_FRAME;
 313                                 port->icount.frame++;
 314                         }
 315
 316                         if (lsr & UART_LSR_OE) {
 317                                 port->icount.overrun++;
 318                                 tty_insert_flip_char(&port->port, 0,
 319                                                 TTY_OVERRUN);
 320                         }
 321                 }
 322
 323                 if (port->port.console && port->sysrq) {
 324                         if (usb_serial_handle_sysrq_char(port, data[i + 1]))
 325                                 continue;
 326                 }
 327
 328                 tty_insert_flip_char(&port->port, data[i + 1], tty_flag);
 329         }
 330
 331         tty_flip_buffer_push(&port->port);
 332 }
 333
 334 static void f81232_break_ctl(struct tty_struct *tty, int break_state)
 335 {
 336         /* FIXME - Stubbed out for now */
 337
 338         /*
 339          * break_state = -1 to turn on break, and 0 to turn off break
 340          * see drivers/char/tty_io.c to see it used.
 341          * last_set_data_urb_value NEVER has the break bit set in it.
 342          */
 343 }
 344
 345 static void f81232_set_baudrate(struct usb_serial_port *port, speed_t baudrate)
 346 {
 347         u8 lcr;
 348         int divisor;
 349         int status = 0;
 350
 351         divisor = calc_baud_divisor(baudrate);
 352
 353         status = f81232_get_register(port, LINE_CONTROL_REGISTER,
 354                          &lcr); /* get LCR */
 355         if (status) {
 356                 dev_err(&port->dev, "%s failed to get LCR: %d\n",
 357                         __func__, status);
 358                 return;
 359         }
 360
 361         status = f81232_set_register(port, LINE_CONTROL_REGISTER,
 362                          lcr | UART_LCR_DLAB); /* Enable DLAB */
 363         if (status) {
 364                 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
 365                         __func__, status);
 366                 return;
 367         }
 368
 369         status = f81232_set_register(port, RECEIVE_BUFFER_REGISTER,
 370                          divisor & 0x00ff); /* low */
 371         if (status) {
 372                 dev_err(&port->dev, "%s failed to set baudrate MSB: %d\n",
 373                         __func__, status);
 374                 goto reapply_lcr;
 375         }
 376
 377         status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
 378                          (divisor & 0xff00) >> 8); /* high */
 379         if (status) {
 380                 dev_err(&port->dev, "%s failed to set baudrate LSB: %d\n",
 381                         __func__, status);
 382         }
 383
 384 reapply_lcr:
 385         status = f81232_set_register(port, LINE_CONTROL_REGISTER,
 386                         lcr & ~UART_LCR_DLAB);
 387         if (status) {
 388                 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
 389                         __func__, status);
 390         }
 391 }
 392
 393 static int f81232_port_enable(struct usb_serial_port *port)
 394 {
 395         u8 val;
 396         int status;
 397
 398         /* fifo on, trigger8, clear TX/RX*/
 399         val = UART_FCR_TRIGGER_8 | UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
 400                         UART_FCR_CLEAR_XMIT;
 401
 402         status = f81232_set_register(port, FIFO_CONTROL_REGISTER, val);
 403         if (status) {
 404                 dev_err(&port->dev, "%s failed to set FCR: %d\n",
 405                         __func__, status);
 406                 return status;
 407         }
 408
 409         /* MSR Interrupt only, LSR will read from Bulk-in odd byte */
 410         status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
 411                         UART_IER_MSI);
 412         if (status) {
 413                 dev_err(&port->dev, "%s failed to set IER: %d\n",
 414                         __func__, status);
 415                 return status;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int f81232_port_disable(struct usb_serial_port *port)
 422 {
 423         int status;
 424
 425         status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER, 0);
 426         if (status) {
 427                 dev_err(&port->dev, "%s failed to set IER: %d\n",
 428                         __func__, status);
 429                 return status;
 430         }
 431
 432         return 0;
 433 }
 434
 435 static void f81232_set_termios(struct tty_struct *tty,
 436                 struct usb_serial_port *port, struct ktermios *old_termios)
 437 {
 438         u8 new_lcr = 0;
 439         int status = 0;
 440         speed_t baudrate;
 441
 442         /* Don't change anything if nothing has changed */
 443         if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
 444                 return;
 445
 446         if (C_BAUD(tty) == B0)
 447                 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
 448         else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
 449                 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
 450
 451         baudrate = tty_get_baud_rate(tty);
 452         if (baudrate > 0) {
 453                 if (baudrate > F81232_MAX_BAUDRATE) {
 454                         baudrate = F81232_MAX_BAUDRATE;
 455                         tty_encode_baud_rate(tty, baudrate, baudrate);
 456                 }
 457                 f81232_set_baudrate(port, baudrate);
 458         }
 459
 460         if (C_PARENB(tty)) {
 461                 new_lcr |= UART_LCR_PARITY;
 462
 463                 if (!C_PARODD(tty))
 464                         new_lcr |= UART_LCR_EPAR;
 465
 466                 if (C_CMSPAR(tty))
 467                         new_lcr |= UART_LCR_SPAR;
 468         }
 469
 470         if (C_CSTOPB(tty))
 471                 new_lcr |= UART_LCR_STOP;
 472
 473         switch (C_CSIZE(tty)) {
 474         case CS5:
 475                 new_lcr |= UART_LCR_WLEN5;
 476                 break;
 477         case CS6:
 478                 new_lcr |= UART_LCR_WLEN6;
 479                 break;
 480         case CS7:
 481                 new_lcr |= UART_LCR_WLEN7;
 482                 break;
 483         default:
 484         case CS8:
 485                 new_lcr |= UART_LCR_WLEN8;
 486                 break;
 487         }
 488
 489         status = f81232_set_register(port, LINE_CONTROL_REGISTER, new_lcr);
 490         if (status) {
 491                 dev_err(&port->dev, "%s failed to set LCR: %d\n",
 492                         __func__, status);
 493         }
 494 }
 495
 496 static int f81232_tiocmget(struct tty_struct *tty)
 497 {
 498         int r;
 499         struct usb_serial_port *port = tty->driver_data;
 500         struct f81232_private *port_priv = usb_get_serial_port_data(port);
 501         u8 mcr, msr;
 502
 503         /* force get current MSR changed state */
 504         f81232_read_msr(port);
 505
 506         mutex_lock(&port_priv->lock);
 507         mcr = port_priv->modem_control;
 508         msr = port_priv->modem_status;
 509         mutex_unlock(&port_priv->lock);
 510
 511         r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) |
 512                 (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) |
 513                 (msr & UART_MSR_CTS ? TIOCM_CTS : 0) |
 514                 (msr & UART_MSR_DCD ? TIOCM_CAR : 0) |
 515                 (msr & UART_MSR_RI ? TIOCM_RI : 0) |
 516                 (msr & UART_MSR_DSR ? TIOCM_DSR : 0);
 517
 518         return r;
 519 }
 520
 521 static int f81232_tiocmset(struct tty_struct *tty,
 522                         unsigned int set, unsigned int clear)
 523 {
 524         struct usb_serial_port *port = tty->driver_data;
 525
 526         return f81232_set_mctrl(port, set, clear);
 527 }
 528
 529 static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
 530 {
 531         int result;
 532
 533         result = f81232_port_enable(port);
 534         if (result)
 535                 return result;
 536
 537         /* Setup termios */
 538         if (tty)
 539                 f81232_set_termios(tty, port, NULL);
 540
 541         result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 542         if (result) {
 543                 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
 544                         " error %d\n", __func__, result);
 545                 return result;
 546         }
 547
 548         result = usb_serial_generic_open(tty, port);
 549         if (result) {
 550                 usb_kill_urb(port->interrupt_in_urb);
 551                 return result;
 552         }
 553
 554         return 0;
 555 }
 556
 557 static void f81232_close(struct usb_serial_port *port)
 558 {
 559         struct f81232_private *port_priv = usb_get_serial_port_data(port);
 560
 561         f81232_port_disable(port);
 562         usb_serial_generic_close(port);
 563         usb_kill_urb(port->interrupt_in_urb);
 564         flush_work(&port_priv->interrupt_work);
 565 }
 566
 567 static void f81232_dtr_rts(struct usb_serial_port *port, int on)
 568 {
 569         if (on)
 570                 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
 571         else
 572                 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
 573 }
 574
 575 static int f81232_carrier_raised(struct usb_serial_port *port)
 576 {
 577         u8 msr;
 578         struct f81232_private *priv = usb_get_serial_port_data(port);
 579
 580         mutex_lock(&priv->lock);
 581         msr = priv->modem_status;
 582         mutex_unlock(&priv->lock);
 583
 584         if (msr & UART_MSR_DCD)
 585                 return 1;
 586         return 0;
 587 }
 588
 589 static int f81232_get_serial_info(struct usb_serial_port *port,
 590                 unsigned long arg)
 591 {
 592         struct serial_struct ser;
 593
 594         memset(&ser, 0, sizeof(ser));
 595
 596         ser.type = PORT_16550A;
 597         ser.line = port->minor;
 598         ser.port = port->port_number;
 599         ser.baud_base = F81232_MAX_BAUDRATE;
 600
 601         if (copy_to_user((void __user *)arg, &ser, sizeof(ser)))
 602                 return -EFAULT;
 603
 604         return 0;
 605 }
 606
 607 static int f81232_ioctl(struct tty_struct *tty,
 608                         unsigned int cmd, unsigned long arg)
 609 {
 610         struct usb_serial_port *port = tty->driver_data;
 611
 612         switch (cmd) {
 613         case TIOCGSERIAL:
 614                 return f81232_get_serial_info(port, arg);
 615         default:
 616                 break;
 617         }
 618         return -ENOIOCTLCMD;
 619 }
 620
 621 static void  f81232_interrupt_work(struct work_struct *work)
 622 {
 623         struct f81232_private *priv =
 624                 container_of(work, struct f81232_private, interrupt_work);
 625
 626         f81232_read_msr(priv->port);
 627 }
 628
 629 static int f81232_port_probe(struct usb_serial_port *port)
 630 {
 631         struct f81232_private *priv;
 632
 633         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 634         if (!priv)
 635                 return -ENOMEM;
 636
 637         mutex_init(&priv->lock);
 638         INIT_WORK(&priv->interrupt_work,  f81232_interrupt_work);
 639
 640         usb_set_serial_port_data(port, priv);
 641
 642         port->port.drain_delay = 256;
 643         priv->port = port;
 644
 645         return 0;
 646 }
 647
 648 static int f81232_port_remove(struct usb_serial_port *port)
 649 {
 650         struct f81232_private *priv;
 651
 652         priv = usb_get_serial_port_data(port);
 653         kfree(priv);
 654
 655         return 0;
 656 }
 657
 658 static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
 659 {
 660         struct usb_serial_port *port = serial->port[0];
 661         struct f81232_private *port_priv = usb_get_serial_port_data(port);
 662         int i;
 663
 664         for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
 665                 usb_kill_urb(port->read_urbs[i]);
 666
 667         usb_kill_urb(port->interrupt_in_urb);
 668
 669         if (port_priv)
 670                 flush_work(&port_priv->interrupt_work);
 671
 672         return 0;
 673 }
 674
 675 static int f81232_resume(struct usb_serial *serial)
 676 {
 677         struct usb_serial_port *port = serial->port[0];
 678         int result;
 679
 680         if (tty_port_initialized(&port->port)) {
 681                 result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
 682                 if (result) {
 683                         dev_err(&port->dev, "submit interrupt urb failed: %d\n",
 684                                         result);
 685                         return result;
 686                 }
 687         }
 688
 689         return usb_serial_generic_resume(serial);
 690 }
 691
 692 static struct usb_serial_driver f81232_device = {
 693         .driver = {
 694                 .owner =        THIS_MODULE,
 695                 .name =         "f81232",
 696         },
 697         .id_table =             id_table,
 698         .num_ports =            1,
 699         .bulk_in_size =         256,
 700         .bulk_out_size =        256,
 701         .open =                 f81232_open,
 702         .close =                f81232_close,
 703         .dtr_rts =              f81232_dtr_rts,
 704         .carrier_raised =       f81232_carrier_raised,
 705         .ioctl =                f81232_ioctl,
 706         .break_ctl =            f81232_break_ctl,
 707         .set_termios =          f81232_set_termios,
 708         .tiocmget =             f81232_tiocmget,
 709         .tiocmset =             f81232_tiocmset,
 710         .tiocmiwait =           usb_serial_generic_tiocmiwait,
 711         .process_read_urb =     f81232_process_read_urb,
 712         .read_int_callback =    f81232_read_int_callback,
 713         .port_probe =           f81232_port_probe,
 714         .port_remove =          f81232_port_remove,
 715         .suspend =              f81232_suspend,
 716         .resume =               f81232_resume,
 717 };
 718
 719 static struct usb_serial_driver * const serial_drivers[] = {
 720         &f81232_device,
 721         NULL,
 722 };
 723
 724 module_usb_serial_driver(serial_drivers, id_table);
 725
 726 MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
 727 MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
 728 MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
 729 MODULE_LICENSE("GPL v2");