drivers/usb/serial/spcp8x5.c

   1 /*
   2  * spcp8x5 USB to serial adaptor driver
   3  *
   4  * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
   5  * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
   6  * Copyright (C) 2006 S1 Corp.
   7  *
   8  * Original driver for 2.6.10 pl2303 driver by
   9  *   Greg Kroah-Hartman (greg@kroah.com)
  10  * Changes for 2.6.20 by Harald Klein <hari@vt100.at>
  11  *
  12  *      This program is free software; you can redistribute it and/or modify
  13  *      it under the terms of the GNU General Public License as published by
  14  *      the Free Software Foundation; either version 2 of the License, or
  15  *      (at your option) any later version.
  16  *
  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/usb.h>
  29 #include <linux/usb/serial.h>
  30
  31
  32 /* Version Information */
  33 #define DRIVER_VERSION  "v0.10"
  34 #define DRIVER_DESC     "SPCP8x5 USB to serial adaptor driver"
  35
  36 static int debug;
  37
  38 #define SPCP8x5_007_VID         0x04FC
  39 #define SPCP8x5_007_PID         0x0201
  40 #define SPCP8x5_008_VID         0x04fc
  41 #define SPCP8x5_008_PID         0x0235
  42 #define SPCP8x5_PHILIPS_VID     0x0471
  43 #define SPCP8x5_PHILIPS_PID     0x081e
  44 #define SPCP8x5_INTERMATIC_VID  0x04FC
  45 #define SPCP8x5_INTERMATIC_PID  0x0204
  46 #define SPCP8x5_835_VID         0x04fc
  47 #define SPCP8x5_835_PID         0x0231
  48
  49 static const struct usb_device_id id_table[] = {
  50         { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
  51         { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
  52         { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
  53         { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
  54         { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)},
  55         { }                                     /* Terminating entry */
  56 };
  57 MODULE_DEVICE_TABLE(usb, id_table);
  58
  59 struct spcp8x5_usb_ctrl_arg {
  60         u8      type;
  61         u8      cmd;
  62         u8      cmd_type;
  63         u16     value;
  64         u16     index;
  65         u16     length;
  66 };
  67
  68
  69 /* spcp8x5 spec register define */
  70 #define MCR_CONTROL_LINE_RTS            0x02
  71 #define MCR_CONTROL_LINE_DTR            0x01
  72 #define MCR_DTR                         0x01
  73 #define MCR_RTS                         0x02
  74
  75 #define MSR_STATUS_LINE_DCD             0x80
  76 #define MSR_STATUS_LINE_RI              0x40
  77 #define MSR_STATUS_LINE_DSR             0x20
  78 #define MSR_STATUS_LINE_CTS             0x10
  79
  80 /* verdor command here , we should define myself */
  81 #define SET_DEFAULT                     0x40
  82 #define SET_DEFAULT_TYPE                0x20
  83
  84 #define SET_UART_FORMAT                 0x40
  85 #define SET_UART_FORMAT_TYPE            0x21
  86 #define SET_UART_FORMAT_SIZE_5          0x00
  87 #define SET_UART_FORMAT_SIZE_6          0x01
  88 #define SET_UART_FORMAT_SIZE_7          0x02
  89 #define SET_UART_FORMAT_SIZE_8          0x03
  90 #define SET_UART_FORMAT_STOP_1          0x00
  91 #define SET_UART_FORMAT_STOP_2          0x04
  92 #define SET_UART_FORMAT_PAR_NONE        0x00
  93 #define SET_UART_FORMAT_PAR_ODD         0x10
  94 #define SET_UART_FORMAT_PAR_EVEN        0x30
  95 #define SET_UART_FORMAT_PAR_MASK        0xD0
  96 #define SET_UART_FORMAT_PAR_SPACE       0x90
  97
  98 #define GET_UART_STATUS_TYPE            0xc0
  99 #define GET_UART_STATUS                 0x22
 100 #define GET_UART_STATUS_MSR             0x06
 101
 102 #define SET_UART_STATUS                 0x40
 103 #define SET_UART_STATUS_TYPE            0x23
 104 #define SET_UART_STATUS_MCR             0x0004
 105 #define SET_UART_STATUS_MCR_DTR         0x01
 106 #define SET_UART_STATUS_MCR_RTS         0x02
 107 #define SET_UART_STATUS_MCR_LOOP        0x10
 108
 109 #define SET_WORKING_MODE                0x40
 110 #define SET_WORKING_MODE_TYPE           0x24
 111 #define SET_WORKING_MODE_U2C            0x00
 112 #define SET_WORKING_MODE_RS485          0x01
 113 #define SET_WORKING_MODE_PDMA           0x02
 114 #define SET_WORKING_MODE_SPP            0x03
 115
 116 #define SET_FLOWCTL_CHAR                0x40
 117 #define SET_FLOWCTL_CHAR_TYPE           0x25
 118
 119 #define GET_VERSION                     0xc0
 120 #define GET_VERSION_TYPE                0x26
 121
 122 #define SET_REGISTER                    0x40
 123 #define SET_REGISTER_TYPE               0x27
 124
 125 #define GET_REGISTER                    0xc0
 126 #define GET_REGISTER_TYPE               0x28
 127
 128 #define SET_RAM                         0x40
 129 #define SET_RAM_TYPE                    0x31
 130
 131 #define GET_RAM                         0xc0
 132 #define GET_RAM_TYPE                    0x32
 133
 134 /* how come ??? */
 135 #define UART_STATE                      0x08
 136 #define UART_STATE_TRANSIENT_MASK       0x75
 137 #define UART_DCD                        0x01
 138 #define UART_DSR                        0x02
 139 #define UART_BREAK_ERROR                0x04
 140 #define UART_RING                       0x08
 141 #define UART_FRAME_ERROR                0x10
 142 #define UART_PARITY_ERROR               0x20
 143 #define UART_OVERRUN_ERROR              0x40
 144 #define UART_CTS                        0x80
 145
 146 enum spcp8x5_type {
 147         SPCP825_007_TYPE,
 148         SPCP825_008_TYPE,
 149         SPCP825_PHILIP_TYPE,
 150         SPCP825_INTERMATIC_TYPE,
 151         SPCP835_TYPE,
 152 };
 153
 154 static struct usb_driver spcp8x5_driver = {
 155         .name =                 "spcp8x5",
 156         .probe =                usb_serial_probe,
 157         .disconnect =           usb_serial_disconnect,
 158         .id_table =             id_table,
 159         .no_dynamic_id =        1,
 160 };
 161
 162
 163 struct spcp8x5_private {
 164         spinlock_t      lock;
 165         enum spcp8x5_type       type;
 166         u8                      line_control;
 167         u8                      line_status;
 168 };
 169
 170 /* desc : when device plug in,this function would be called.
 171  * thanks to usb_serial subsystem,then do almost every things for us. And what
 172  * we should do just alloc the buffer */
 173 static int spcp8x5_startup(struct usb_serial *serial)
 174 {
 175         struct spcp8x5_private *priv;
 176         int i;
 177         enum spcp8x5_type type = SPCP825_007_TYPE;
 178         u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
 179
 180         if (product == 0x0201)
 181                 type = SPCP825_007_TYPE;
 182         else if (product == 0x0231)
 183                 type = SPCP835_TYPE;
 184         else if (product == 0x0235)
 185                 type = SPCP825_008_TYPE;
 186         else if (product == 0x0204)
 187                 type = SPCP825_INTERMATIC_TYPE;
 188         else if (product == 0x0471 &&
 189                  serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
 190                 type = SPCP825_PHILIP_TYPE;
 191         dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
 192
 193         for (i = 0; i < serial->num_ports; ++i) {
 194                 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
 195                 if (!priv)
 196                         goto cleanup;
 197
 198                 spin_lock_init(&priv->lock);
 199                 priv->type = type;
 200                 usb_set_serial_port_data(serial->port[i] , priv);
 201         }
 202
 203         return 0;
 204 cleanup:
 205         for (--i; i >= 0; --i) {
 206                 priv = usb_get_serial_port_data(serial->port[i]);
 207                 kfree(priv);
 208                 usb_set_serial_port_data(serial->port[i] , NULL);
 209         }
 210         return -ENOMEM;
 211 }
 212
 213 /* call when the device plug out. free all the memory alloced by probe */
 214 static void spcp8x5_release(struct usb_serial *serial)
 215 {
 216         int i;
 217
 218         for (i = 0; i < serial->num_ports; i++)
 219                 kfree(usb_get_serial_port_data(serial->port[i]));
 220 }
 221
 222 /* set the modem control line of the device.
 223  * NOTE spcp825-007 not supported this */
 224 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
 225                                 enum spcp8x5_type type)
 226 {
 227         int retval;
 228         u8 mcr = 0 ;
 229
 230         if (type == SPCP825_007_TYPE)
 231                 return -EPERM;
 232
 233         mcr = (unsigned short)value;
 234         retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 235                                  SET_UART_STATUS_TYPE, SET_UART_STATUS,
 236                                  mcr, 0x04, NULL, 0, 100);
 237         if (retval != 0)
 238                 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
 239         return retval;
 240 }
 241
 242 /* get the modem status register of the device
 243  * NOTE spcp825-007 not supported this */
 244 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
 245                            enum spcp8x5_type type)
 246 {
 247         u8 *status_buffer;
 248         int ret;
 249
 250         /* I return Permited not support here but seem inval device
 251          * is more fix */
 252         if (type == SPCP825_007_TYPE)
 253                 return -EPERM;
 254         if (status == NULL)
 255                 return -EINVAL;
 256
 257         status_buffer = kmalloc(1, GFP_KERNEL);
 258         if (!status_buffer)
 259                 return -ENOMEM;
 260         status_buffer[0] = status[0];
 261
 262         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 263                               GET_UART_STATUS, GET_UART_STATUS_TYPE,
 264                               0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
 265         if (ret < 0)
 266                 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
 267                         status_buffer, ret);
 268
 269         dev_dbg(&dev->dev, "0xc0:0x22:0:6  %d - 0x%p ", ret, status_buffer);
 270         status[0] = status_buffer[0];
 271         kfree(status_buffer);
 272
 273         return ret;
 274 }
 275
 276 /* select the work mode.
 277  * NOTE this function not supported by spcp825-007 */
 278 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
 279                                  u16 index, enum spcp8x5_type type)
 280 {
 281         int ret;
 282
 283         /* I return Permited not support here but seem inval device
 284          * is more fix */
 285         if (type == SPCP825_007_TYPE)
 286                 return;
 287
 288         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 289                               SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
 290                               value, index, NULL, 0, 100);
 291         dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
 292         if (ret < 0)
 293                 dev_dbg(&dev->dev,
 294                         "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
 295 }
 296
 297 static int spcp8x5_carrier_raised(struct usb_serial_port *port)
 298 {
 299         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 300         if (priv->line_status & MSR_STATUS_LINE_DCD)
 301                 return 1;
 302         return 0;
 303 }
 304
 305 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
 306 {
 307         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 308         unsigned long flags;
 309         u8 control;
 310
 311         spin_lock_irqsave(&priv->lock, flags);
 312         if (on)
 313                 priv->line_control = MCR_CONTROL_LINE_DTR
 314                                                 | MCR_CONTROL_LINE_RTS;
 315         else
 316                 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
 317                                                 | MCR_CONTROL_LINE_RTS);
 318         control = priv->line_control;
 319         spin_unlock_irqrestore(&priv->lock, flags);
 320         spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 321 }
 322
 323 static void spcp8x5_init_termios(struct tty_struct *tty)
 324 {
 325         /* for the 1st time call this function */
 326         *(tty->termios) = tty_std_termios;
 327         tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
 328         tty->termios->c_ispeed = 115200;
 329         tty->termios->c_ospeed = 115200;
 330 }
 331
 332 /* set the serial param for transfer. we should check if we really need to
 333  * transfer. if we set flow control we should do this too. */
 334 static void spcp8x5_set_termios(struct tty_struct *tty,
 335                 struct usb_serial_port *port, struct ktermios *old_termios)
 336 {
 337         struct usb_serial *serial = port->serial;
 338         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 339         unsigned long flags;
 340         unsigned int cflag = tty->termios->c_cflag;
 341         unsigned short uartdata;
 342         unsigned char buf[2] = {0, 0};
 343         int baud;
 344         int i;
 345         u8 control;
 346
 347
 348         /* check that they really want us to change something */
 349         if (old_termios && !tty_termios_hw_change(tty->termios, old_termios))
 350                 return;
 351
 352         /* set DTR/RTS active */
 353         spin_lock_irqsave(&priv->lock, flags);
 354         control = priv->line_control;
 355         if (old_termios && (old_termios->c_cflag & CBAUD) == B0) {
 356                 priv->line_control |= MCR_DTR;
 357                 if (!(old_termios->c_cflag & CRTSCTS))
 358                         priv->line_control |= MCR_RTS;
 359         }
 360         if (control != priv->line_control) {
 361                 control = priv->line_control;
 362                 spin_unlock_irqrestore(&priv->lock, flags);
 363                 spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
 364         } else {
 365                 spin_unlock_irqrestore(&priv->lock, flags);
 366         }
 367
 368         /* Set Baud Rate */
 369         baud = tty_get_baud_rate(tty);
 370         switch (baud) {
 371         case 300:       buf[0] = 0x00;  break;
 372         case 600:       buf[0] = 0x01;  break;
 373         case 1200:      buf[0] = 0x02;  break;
 374         case 2400:      buf[0] = 0x03;  break;
 375         case 4800:      buf[0] = 0x04;  break;
 376         case 9600:      buf[0] = 0x05;  break;
 377         case 19200:     buf[0] = 0x07;  break;
 378         case 38400:     buf[0] = 0x09;  break;
 379         case 57600:     buf[0] = 0x0a;  break;
 380         case 115200:    buf[0] = 0x0b;  break;
 381         case 230400:    buf[0] = 0x0c;  break;
 382         case 460800:    buf[0] = 0x0d;  break;
 383         case 921600:    buf[0] = 0x0e;  break;
 384 /*      case 1200000:   buf[0] = 0x0f;  break; */
 385 /*      case 2400000:   buf[0] = 0x10;  break; */
 386         case 3000000:   buf[0] = 0x11;  break;
 387 /*      case 6000000:   buf[0] = 0x12;  break; */
 388         case 0:
 389         case 1000000:
 390                         buf[0] = 0x0b;  break;
 391         default:
 392                 dev_err(&port->dev, "spcp825 driver does not support the "
 393                         "baudrate requested, using default of 9600.\n");
 394         }
 395
 396         /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
 397         switch (cflag & CSIZE) {
 398         case CS5:
 399                 buf[1] |= SET_UART_FORMAT_SIZE_5;
 400                 break;
 401         case CS6:
 402                 buf[1] |= SET_UART_FORMAT_SIZE_6;
 403                 break;
 404         case CS7:
 405                 buf[1] |= SET_UART_FORMAT_SIZE_7;
 406                 break;
 407         default:
 408         case CS8:
 409                 buf[1] |= SET_UART_FORMAT_SIZE_8;
 410                 break;
 411         }
 412
 413         /* Set Stop bit2 : 0:1bit 1:2bit */
 414         buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
 415                                      SET_UART_FORMAT_STOP_1;
 416
 417         /* Set Parity bit3-4 01:Odd 11:Even */
 418         if (cflag & PARENB) {
 419                 buf[1] |= (cflag & PARODD) ?
 420                 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
 421         } else
 422                 buf[1] |= SET_UART_FORMAT_PAR_NONE;
 423
 424         uartdata = buf[0] | buf[1]<<8;
 425
 426         i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 427                             SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
 428                             uartdata, 0, NULL, 0, 100);
 429         if (i < 0)
 430                 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
 431                         uartdata, i);
 432         dbg("0x21:0x40:0:0  %d", i);
 433
 434         if (cflag & CRTSCTS) {
 435                 /* enable hardware flow control */
 436                 spcp8x5_set_workMode(serial->dev, 0x000a,
 437                                      SET_WORKING_MODE_U2C, priv->type);
 438         }
 439 }
 440
 441 /* open the serial port. do some usb system call. set termios and get the line
 442  * status of the device. */
 443 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
 444 {
 445         struct usb_serial *serial = port->serial;
 446         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 447         int ret;
 448         unsigned long flags;
 449         u8 status = 0x30;
 450         /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
 451
 452         dbg("%s -  port %d", __func__, port->number);
 453
 454         usb_clear_halt(serial->dev, port->write_urb->pipe);
 455         usb_clear_halt(serial->dev, port->read_urb->pipe);
 456
 457         ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 458                               0x09, 0x00,
 459                               0x01, 0x00, NULL, 0x00, 100);
 460         if (ret)
 461                 return ret;
 462
 463         spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
 464
 465         /* Setup termios */
 466         if (tty)
 467                 spcp8x5_set_termios(tty, port, NULL);
 468
 469         spcp8x5_get_msr(serial->dev, &status, priv->type);
 470
 471         /* may be we should update uart status here but now we did not do */
 472         spin_lock_irqsave(&priv->lock, flags);
 473         priv->line_status = status & 0xf0 ;
 474         spin_unlock_irqrestore(&priv->lock, flags);
 475
 476         port->port.drain_delay = 256;
 477
 478         return usb_serial_generic_open(tty, port);
 479 }
 480
 481 static void spcp8x5_process_read_urb(struct urb *urb)
 482 {
 483         struct usb_serial_port *port = urb->context;
 484         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 485         struct tty_struct *tty;
 486         unsigned char *data = urb->transfer_buffer;
 487         unsigned long flags;
 488         u8 status;
 489         char tty_flag;
 490
 491         /* get tty_flag from status */
 492         tty_flag = TTY_NORMAL;
 493
 494         spin_lock_irqsave(&priv->lock, flags);
 495         status = priv->line_status;
 496         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
 497         spin_unlock_irqrestore(&priv->lock, flags);
 498         /* wake up the wait for termios */
 499         wake_up_interruptible(&port->delta_msr_wait);
 500
 501         if (!urb->actual_length)
 502                 return;
 503
 504         tty = tty_port_tty_get(&port->port);
 505         if (!tty)
 506                 return;
 507
 508         if (status & UART_STATE_TRANSIENT_MASK) {
 509                 /* break takes precedence over parity, which takes precedence
 510                  * over framing errors */
 511                 if (status & UART_BREAK_ERROR)
 512                         tty_flag = TTY_BREAK;
 513                 else if (status & UART_PARITY_ERROR)
 514                         tty_flag = TTY_PARITY;
 515                 else if (status & UART_FRAME_ERROR)
 516                         tty_flag = TTY_FRAME;
 517                 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
 518
 519                 /* overrun is special, not associated with a char */
 520                 if (status & UART_OVERRUN_ERROR)
 521                         tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 522
 523                 if (status & UART_DCD)
 524                         usb_serial_handle_dcd_change(port, tty,
 525                                    priv->line_status & MSR_STATUS_LINE_DCD);
 526         }
 527
 528         tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
 529                                                         urb->actual_length);
 530         tty_flip_buffer_push(tty);
 531         tty_kref_put(tty);
 532 }
 533
 534 static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
 535                                    unsigned int arg)
 536 {
 537         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 538         unsigned long flags;
 539         unsigned int prevstatus;
 540         unsigned int status;
 541         unsigned int changed;
 542
 543         spin_lock_irqsave(&priv->lock, flags);
 544         prevstatus = priv->line_status;
 545         spin_unlock_irqrestore(&priv->lock, flags);
 546
 547         while (1) {
 548                 /* wake up in bulk read */
 549                 interruptible_sleep_on(&port->delta_msr_wait);
 550
 551                 /* see if a signal did it */
 552                 if (signal_pending(current))
 553                         return -ERESTARTSYS;
 554
 555                 if (port->serial->disconnected)
 556                         return -EIO;
 557
 558                 spin_lock_irqsave(&priv->lock, flags);
 559                 status = priv->line_status;
 560                 spin_unlock_irqrestore(&priv->lock, flags);
 561
 562                 changed = prevstatus^status;
 563
 564                 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
 565                     ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
 566                     ((arg & TIOCM_CD)  && (changed & MSR_STATUS_LINE_DCD)) ||
 567                     ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
 568                         return 0;
 569
 570                 prevstatus = status;
 571         }
 572         /* NOTREACHED */
 573         return 0;
 574 }
 575
 576 static int spcp8x5_ioctl(struct tty_struct *tty,
 577                          unsigned int cmd, unsigned long arg)
 578 {
 579         struct usb_serial_port *port = tty->driver_data;
 580         dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
 581
 582         switch (cmd) {
 583         case TIOCMIWAIT:
 584                 dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
 585                 return spcp8x5_wait_modem_info(port, arg);
 586
 587         default:
 588                 dbg("%s not supported = 0x%04x", __func__, cmd);
 589                 break;
 590         }
 591
 592         return -ENOIOCTLCMD;
 593 }
 594
 595 static int spcp8x5_tiocmset(struct tty_struct *tty,
 596                             unsigned int set, unsigned int clear)
 597 {
 598         struct usb_serial_port *port = tty->driver_data;
 599         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 600         unsigned long flags;
 601         u8 control;
 602
 603         spin_lock_irqsave(&priv->lock, flags);
 604         if (set & TIOCM_RTS)
 605                 priv->line_control |= MCR_RTS;
 606         if (set & TIOCM_DTR)
 607                 priv->line_control |= MCR_DTR;
 608         if (clear & TIOCM_RTS)
 609                 priv->line_control &= ~MCR_RTS;
 610         if (clear & TIOCM_DTR)
 611                 priv->line_control &= ~MCR_DTR;
 612         control = priv->line_control;
 613         spin_unlock_irqrestore(&priv->lock, flags);
 614
 615         return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 616 }
 617
 618 static int spcp8x5_tiocmget(struct tty_struct *tty)
 619 {
 620         struct usb_serial_port *port = tty->driver_data;
 621         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 622         unsigned long flags;
 623         unsigned int mcr;
 624         unsigned int status;
 625         unsigned int result;
 626
 627         spin_lock_irqsave(&priv->lock, flags);
 628         mcr = priv->line_control;
 629         status = priv->line_status;
 630         spin_unlock_irqrestore(&priv->lock, flags);
 631
 632         result = ((mcr & MCR_DTR)                       ? TIOCM_DTR : 0)
 633                   | ((mcr & MCR_RTS)                    ? TIOCM_RTS : 0)
 634                   | ((status & MSR_STATUS_LINE_CTS)     ? TIOCM_CTS : 0)
 635                   | ((status & MSR_STATUS_LINE_DSR)     ? TIOCM_DSR : 0)
 636                   | ((status & MSR_STATUS_LINE_RI)      ? TIOCM_RI  : 0)
 637                   | ((status & MSR_STATUS_LINE_DCD)     ? TIOCM_CD  : 0);
 638
 639         return result;
 640 }
 641
 642 /* All of the device info needed for the spcp8x5 SIO serial converter */
 643 static struct usb_serial_driver spcp8x5_device = {
 644         .driver = {
 645                 .owner =        THIS_MODULE,
 646                 .name =         "SPCP8x5",
 647         },
 648         .id_table               = id_table,
 649         .usb_driver             = &spcp8x5_driver,
 650         .num_ports              = 1,
 651         .open                   = spcp8x5_open,
 652         .dtr_rts                = spcp8x5_dtr_rts,
 653         .carrier_raised         = spcp8x5_carrier_raised,
 654         .set_termios            = spcp8x5_set_termios,
 655         .init_termios           = spcp8x5_init_termios,
 656         .ioctl                  = spcp8x5_ioctl,
 657         .tiocmget               = spcp8x5_tiocmget,
 658         .tiocmset               = spcp8x5_tiocmset,
 659         .attach                 = spcp8x5_startup,
 660         .release                = spcp8x5_release,
 661         .process_read_urb       = spcp8x5_process_read_urb,
 662 };
 663
 664 static int __init spcp8x5_init(void)
 665 {
 666         int retval;
 667         retval = usb_serial_register(&spcp8x5_device);
 668         if (retval)
 669                 goto failed_usb_serial_register;
 670         retval = usb_register(&spcp8x5_driver);
 671         if (retval)
 672                 goto failed_usb_register;
 673         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 674                DRIVER_DESC "\n");
 675         return 0;
 676 failed_usb_register:
 677         usb_serial_deregister(&spcp8x5_device);
 678 failed_usb_serial_register:
 679         return retval;
 680 }
 681
 682 static void __exit spcp8x5_exit(void)
 683 {
 684         usb_deregister(&spcp8x5_driver);
 685         usb_serial_deregister(&spcp8x5_device);
 686 }
 687
 688 module_init(spcp8x5_init);
 689 module_exit(spcp8x5_exit);
 690
 691 MODULE_DESCRIPTION(DRIVER_DESC);
 692 MODULE_VERSION(DRIVER_VERSION);
 693 MODULE_LICENSE("GPL");
 694
 695 module_param(debug, bool, S_IRUGO | S_IWUSR);
 696 MODULE_PARM_DESC(debug, "Debug enabled or not");