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         wait_queue_head_t       delta_msr_wait;
 167         u8                      line_control;
 168         u8                      line_status;
 169 };
 170
 171 /* desc : when device plug in,this function would be called.
 172  * thanks to usb_serial subsystem,then do almost every things for us. And what
 173  * we should do just alloc the buffer */
 174 static int spcp8x5_startup(struct usb_serial *serial)
 175 {
 176         struct spcp8x5_private *priv;
 177         int i;
 178         enum spcp8x5_type type = SPCP825_007_TYPE;
 179         u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
 180
 181         if (product == 0x0201)
 182                 type = SPCP825_007_TYPE;
 183         else if (product == 0x0231)
 184                 type = SPCP835_TYPE;
 185         else if (product == 0x0235)
 186                 type = SPCP825_008_TYPE;
 187         else if (product == 0x0204)
 188                 type = SPCP825_INTERMATIC_TYPE;
 189         else if (product == 0x0471 &&
 190                  serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
 191                 type = SPCP825_PHILIP_TYPE;
 192         dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
 193
 194         for (i = 0; i < serial->num_ports; ++i) {
 195                 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
 196                 if (!priv)
 197                         goto cleanup;
 198
 199                 spin_lock_init(&priv->lock);
 200                 init_waitqueue_head(&priv->delta_msr_wait);
 201                 priv->type = type;
 202                 usb_set_serial_port_data(serial->port[i] , priv);
 203         }
 204
 205         return 0;
 206 cleanup:
 207         for (--i; i >= 0; --i) {
 208                 priv = usb_get_serial_port_data(serial->port[i]);
 209                 kfree(priv);
 210                 usb_set_serial_port_data(serial->port[i] , NULL);
 211         }
 212         return -ENOMEM;
 213 }
 214
 215 /* call when the device plug out. free all the memory alloced by probe */
 216 static void spcp8x5_release(struct usb_serial *serial)
 217 {
 218         int i;
 219
 220         for (i = 0; i < serial->num_ports; i++)
 221                 kfree(usb_get_serial_port_data(serial->port[i]));
 222 }
 223
 224 /* set the modem control line of the device.
 225  * NOTE spcp825-007 not supported this */
 226 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
 227                                 enum spcp8x5_type type)
 228 {
 229         int retval;
 230         u8 mcr = 0 ;
 231
 232         if (type == SPCP825_007_TYPE)
 233                 return -EPERM;
 234
 235         mcr = (unsigned short)value;
 236         retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 237                                  SET_UART_STATUS_TYPE, SET_UART_STATUS,
 238                                  mcr, 0x04, NULL, 0, 100);
 239         if (retval != 0)
 240                 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
 241         return retval;
 242 }
 243
 244 /* get the modem status register of the device
 245  * NOTE spcp825-007 not supported this */
 246 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
 247                            enum spcp8x5_type type)
 248 {
 249         u8 *status_buffer;
 250         int ret;
 251
 252         /* I return Permited not support here but seem inval device
 253          * is more fix */
 254         if (type == SPCP825_007_TYPE)
 255                 return -EPERM;
 256         if (status == NULL)
 257                 return -EINVAL;
 258
 259         status_buffer = kmalloc(1, GFP_KERNEL);
 260         if (!status_buffer)
 261                 return -ENOMEM;
 262         status_buffer[0] = status[0];
 263
 264         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 265                               GET_UART_STATUS, GET_UART_STATUS_TYPE,
 266                               0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
 267         if (ret < 0)
 268                 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
 269                         status_buffer, ret);
 270
 271         dev_dbg(&dev->dev, "0xc0:0x22:0:6  %d - 0x%p ", ret, status_buffer);
 272         status[0] = status_buffer[0];
 273         kfree(status_buffer);
 274
 275         return ret;
 276 }
 277
 278 /* select the work mode.
 279  * NOTE this function not supported by spcp825-007 */
 280 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
 281                                  u16 index, enum spcp8x5_type type)
 282 {
 283         int ret;
 284
 285         /* I return Permited not support here but seem inval device
 286          * is more fix */
 287         if (type == SPCP825_007_TYPE)
 288                 return;
 289
 290         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 291                               SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
 292                               value, index, NULL, 0, 100);
 293         dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
 294         if (ret < 0)
 295                 dev_dbg(&dev->dev,
 296                         "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
 297 }
 298
 299 static int spcp8x5_carrier_raised(struct usb_serial_port *port)
 300 {
 301         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 302         if (priv->line_status & MSR_STATUS_LINE_DCD)
 303                 return 1;
 304         return 0;
 305 }
 306
 307 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
 308 {
 309         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 310         unsigned long flags;
 311         u8 control;
 312
 313         spin_lock_irqsave(&priv->lock, flags);
 314         if (on)
 315                 priv->line_control = MCR_CONTROL_LINE_DTR
 316                                                 | MCR_CONTROL_LINE_RTS;
 317         else
 318                 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
 319                                                 | MCR_CONTROL_LINE_RTS);
 320         control = priv->line_control;
 321         spin_unlock_irqrestore(&priv->lock, flags);
 322         spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 323 }
 324
 325 static void spcp8x5_init_termios(struct tty_struct *tty)
 326 {
 327         /* for the 1st time call this function */
 328         *(tty->termios) = tty_std_termios;
 329         tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
 330         tty->termios->c_ispeed = 115200;
 331         tty->termios->c_ospeed = 115200;
 332 }
 333
 334 /* set the serial param for transfer. we should check if we really need to
 335  * transfer. if we set flow control we should do this too. */
 336 static void spcp8x5_set_termios(struct tty_struct *tty,
 337                 struct usb_serial_port *port, struct ktermios *old_termios)
 338 {
 339         struct usb_serial *serial = port->serial;
 340         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 341         unsigned long flags;
 342         unsigned int cflag = tty->termios->c_cflag;
 343         unsigned int old_cflag = old_termios->c_cflag;
 344         unsigned short uartdata;
 345         unsigned char buf[2] = {0, 0};
 346         int baud;
 347         int i;
 348         u8 control;
 349
 350
 351         /* check that they really want us to change something */
 352         if (!tty_termios_hw_change(tty->termios, old_termios))
 353                 return;
 354
 355         /* set DTR/RTS active */
 356         spin_lock_irqsave(&priv->lock, flags);
 357         control = priv->line_control;
 358         if ((old_cflag & CBAUD) == B0) {
 359                 priv->line_control |= MCR_DTR;
 360                 if (!(old_cflag & CRTSCTS))
 361                         priv->line_control |= MCR_RTS;
 362         }
 363         if (control != priv->line_control) {
 364                 control = priv->line_control;
 365                 spin_unlock_irqrestore(&priv->lock, flags);
 366                 spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
 367         } else {
 368                 spin_unlock_irqrestore(&priv->lock, flags);
 369         }
 370
 371         /* Set Baud Rate */
 372         baud = tty_get_baud_rate(tty);
 373         switch (baud) {
 374         case 300:       buf[0] = 0x00;  break;
 375         case 600:       buf[0] = 0x01;  break;
 376         case 1200:      buf[0] = 0x02;  break;
 377         case 2400:      buf[0] = 0x03;  break;
 378         case 4800:      buf[0] = 0x04;  break;
 379         case 9600:      buf[0] = 0x05;  break;
 380         case 19200:     buf[0] = 0x07;  break;
 381         case 38400:     buf[0] = 0x09;  break;
 382         case 57600:     buf[0] = 0x0a;  break;
 383         case 115200:    buf[0] = 0x0b;  break;
 384         case 230400:    buf[0] = 0x0c;  break;
 385         case 460800:    buf[0] = 0x0d;  break;
 386         case 921600:    buf[0] = 0x0e;  break;
 387 /*      case 1200000:   buf[0] = 0x0f;  break; */
 388 /*      case 2400000:   buf[0] = 0x10;  break; */
 389         case 3000000:   buf[0] = 0x11;  break;
 390 /*      case 6000000:   buf[0] = 0x12;  break; */
 391         case 0:
 392         case 1000000:
 393                         buf[0] = 0x0b;  break;
 394         default:
 395                 dev_err(&port->dev, "spcp825 driver does not support the "
 396                         "baudrate requested, using default of 9600.\n");
 397         }
 398
 399         /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
 400         if (cflag & CSIZE) {
 401                 switch (cflag & CSIZE) {
 402                 case CS5:
 403                         buf[1] |= SET_UART_FORMAT_SIZE_5;
 404                         break;
 405                 case CS6:
 406                         buf[1] |= SET_UART_FORMAT_SIZE_6;
 407                         break;
 408                 case CS7:
 409                         buf[1] |= SET_UART_FORMAT_SIZE_7;
 410                         break;
 411                 default:
 412                 case CS8:
 413                         buf[1] |= SET_UART_FORMAT_SIZE_8;
 414                         break;
 415                 }
 416         }
 417
 418         /* Set Stop bit2 : 0:1bit 1:2bit */
 419         buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
 420                                      SET_UART_FORMAT_STOP_1;
 421
 422         /* Set Parity bit3-4 01:Odd 11:Even */
 423         if (cflag & PARENB) {
 424                 buf[1] |= (cflag & PARODD) ?
 425                 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
 426         } else
 427                 buf[1] |= SET_UART_FORMAT_PAR_NONE;
 428
 429         uartdata = buf[0] | buf[1]<<8;
 430
 431         i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 432                             SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
 433                             uartdata, 0, NULL, 0, 100);
 434         if (i < 0)
 435                 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
 436                         uartdata, i);
 437         dbg("0x21:0x40:0:0  %d", i);
 438
 439         if (cflag & CRTSCTS) {
 440                 /* enable hardware flow control */
 441                 spcp8x5_set_workMode(serial->dev, 0x000a,
 442                                      SET_WORKING_MODE_U2C, priv->type);
 443         }
 444 }
 445
 446 /* open the serial port. do some usb system call. set termios and get the line
 447  * status of the device. */
 448 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
 449 {
 450         struct ktermios tmp_termios;
 451         struct usb_serial *serial = port->serial;
 452         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 453         int ret;
 454         unsigned long flags;
 455         u8 status = 0x30;
 456         /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
 457
 458         dbg("%s -  port %d", __func__, port->number);
 459
 460         usb_clear_halt(serial->dev, port->write_urb->pipe);
 461         usb_clear_halt(serial->dev, port->read_urb->pipe);
 462
 463         ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 464                               0x09, 0x00,
 465                               0x01, 0x00, NULL, 0x00, 100);
 466         if (ret)
 467                 return ret;
 468
 469         spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
 470
 471         /* Setup termios */
 472         if (tty)
 473                 spcp8x5_set_termios(tty, port, &tmp_termios);
 474
 475         spcp8x5_get_msr(serial->dev, &status, priv->type);
 476
 477         /* may be we should update uart status here but now we did not do */
 478         spin_lock_irqsave(&priv->lock, flags);
 479         priv->line_status = status & 0xf0 ;
 480         spin_unlock_irqrestore(&priv->lock, flags);
 481
 482         port->port.drain_delay = 256;
 483
 484         return usb_serial_generic_open(tty, port);
 485 }
 486
 487 static void spcp8x5_process_read_urb(struct urb *urb)
 488 {
 489         struct usb_serial_port *port = urb->context;
 490         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 491         struct tty_struct *tty;
 492         unsigned char *data = urb->transfer_buffer;
 493         unsigned long flags;
 494         u8 status;
 495         char tty_flag;
 496
 497         /* get tty_flag from status */
 498         tty_flag = TTY_NORMAL;
 499
 500         spin_lock_irqsave(&priv->lock, flags);
 501         status = priv->line_status;
 502         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
 503         spin_unlock_irqrestore(&priv->lock, flags);
 504         /* wake up the wait for termios */
 505         wake_up_interruptible(&priv->delta_msr_wait);
 506
 507         if (!urb->actual_length)
 508                 return;
 509
 510         tty = tty_port_tty_get(&port->port);
 511         if (!tty)
 512                 return;
 513
 514         if (status & UART_STATE_TRANSIENT_MASK) {
 515                 /* break takes precedence over parity, which takes precedence
 516                  * over framing errors */
 517                 if (status & UART_BREAK_ERROR)
 518                         tty_flag = TTY_BREAK;
 519                 else if (status & UART_PARITY_ERROR)
 520                         tty_flag = TTY_PARITY;
 521                 else if (status & UART_FRAME_ERROR)
 522                         tty_flag = TTY_FRAME;
 523                 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
 524
 525                 /* overrun is special, not associated with a char */
 526                 if (status & UART_OVERRUN_ERROR)
 527                         tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 528
 529                 if (status & UART_DCD)
 530                         usb_serial_handle_dcd_change(port, tty,
 531                                    priv->line_status & MSR_STATUS_LINE_DCD);
 532         }
 533
 534         tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
 535                                                         urb->actual_length);
 536         tty_flip_buffer_push(tty);
 537         tty_kref_put(tty);
 538 }
 539
 540 static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
 541                                    unsigned int arg)
 542 {
 543         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 544         unsigned long flags;
 545         unsigned int prevstatus;
 546         unsigned int status;
 547         unsigned int changed;
 548
 549         spin_lock_irqsave(&priv->lock, flags);
 550         prevstatus = priv->line_status;
 551         spin_unlock_irqrestore(&priv->lock, flags);
 552
 553         while (1) {
 554                 /* wake up in bulk read */
 555                 interruptible_sleep_on(&priv->delta_msr_wait);
 556
 557                 /* see if a signal did it */
 558                 if (signal_pending(current))
 559                         return -ERESTARTSYS;
 560
 561                 spin_lock_irqsave(&priv->lock, flags);
 562                 status = priv->line_status;
 563                 spin_unlock_irqrestore(&priv->lock, flags);
 564
 565                 changed = prevstatus^status;
 566
 567                 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
 568                     ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
 569                     ((arg & TIOCM_CD)  && (changed & MSR_STATUS_LINE_DCD)) ||
 570                     ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
 571                         return 0;
 572
 573                 prevstatus = status;
 574         }
 575         /* NOTREACHED */
 576         return 0;
 577 }
 578
 579 static int spcp8x5_ioctl(struct tty_struct *tty,
 580                          unsigned int cmd, unsigned long arg)
 581 {
 582         struct usb_serial_port *port = tty->driver_data;
 583         dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
 584
 585         switch (cmd) {
 586         case TIOCMIWAIT:
 587                 dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
 588                 return spcp8x5_wait_modem_info(port, arg);
 589
 590         default:
 591                 dbg("%s not supported = 0x%04x", __func__, cmd);
 592                 break;
 593         }
 594
 595         return -ENOIOCTLCMD;
 596 }
 597
 598 static int spcp8x5_tiocmset(struct tty_struct *tty,
 599                             unsigned int set, unsigned int clear)
 600 {
 601         struct usb_serial_port *port = tty->driver_data;
 602         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 603         unsigned long flags;
 604         u8 control;
 605
 606         spin_lock_irqsave(&priv->lock, flags);
 607         if (set & TIOCM_RTS)
 608                 priv->line_control |= MCR_RTS;
 609         if (set & TIOCM_DTR)
 610                 priv->line_control |= MCR_DTR;
 611         if (clear & TIOCM_RTS)
 612                 priv->line_control &= ~MCR_RTS;
 613         if (clear & TIOCM_DTR)
 614                 priv->line_control &= ~MCR_DTR;
 615         control = priv->line_control;
 616         spin_unlock_irqrestore(&priv->lock, flags);
 617
 618         return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 619 }
 620
 621 static int spcp8x5_tiocmget(struct tty_struct *tty)
 622 {
 623         struct usb_serial_port *port = tty->driver_data;
 624         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 625         unsigned long flags;
 626         unsigned int mcr;
 627         unsigned int status;
 628         unsigned int result;
 629
 630         spin_lock_irqsave(&priv->lock, flags);
 631         mcr = priv->line_control;
 632         status = priv->line_status;
 633         spin_unlock_irqrestore(&priv->lock, flags);
 634
 635         result = ((mcr & MCR_DTR)                       ? TIOCM_DTR : 0)
 636                   | ((mcr & MCR_RTS)                    ? TIOCM_RTS : 0)
 637                   | ((status & MSR_STATUS_LINE_CTS)     ? TIOCM_CTS : 0)
 638                   | ((status & MSR_STATUS_LINE_DSR)     ? TIOCM_DSR : 0)
 639                   | ((status & MSR_STATUS_LINE_RI)      ? TIOCM_RI  : 0)
 640                   | ((status & MSR_STATUS_LINE_DCD)     ? TIOCM_CD  : 0);
 641
 642         return result;
 643 }
 644
 645 /* All of the device info needed for the spcp8x5 SIO serial converter */
 646 static struct usb_serial_driver spcp8x5_device = {
 647         .driver = {
 648                 .owner =        THIS_MODULE,
 649                 .name =         "SPCP8x5",
 650         },
 651         .id_table               = id_table,
 652         .usb_driver             = &spcp8x5_driver,
 653         .num_ports              = 1,
 654         .open                   = spcp8x5_open,
 655         .dtr_rts                = spcp8x5_dtr_rts,
 656         .carrier_raised         = spcp8x5_carrier_raised,
 657         .set_termios            = spcp8x5_set_termios,
 658         .init_termios           = spcp8x5_init_termios,
 659         .ioctl                  = spcp8x5_ioctl,
 660         .tiocmget               = spcp8x5_tiocmget,
 661         .tiocmset               = spcp8x5_tiocmset,
 662         .attach                 = spcp8x5_startup,
 663         .release                = spcp8x5_release,
 664         .process_read_urb       = spcp8x5_process_read_urb,
 665 };
 666
 667 static int __init spcp8x5_init(void)
 668 {
 669         int retval;
 670         retval = usb_serial_register(&spcp8x5_device);
 671         if (retval)
 672                 goto failed_usb_serial_register;
 673         retval = usb_register(&spcp8x5_driver);
 674         if (retval)
 675                 goto failed_usb_register;
 676         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 677                DRIVER_DESC "\n");
 678         return 0;
 679 failed_usb_register:
 680         usb_serial_deregister(&spcp8x5_device);
 681 failed_usb_serial_register:
 682         return retval;
 683 }
 684
 685 static void __exit spcp8x5_exit(void)
 686 {
 687         usb_deregister(&spcp8x5_driver);
 688         usb_serial_deregister(&spcp8x5_device);
 689 }
 690
 691 module_init(spcp8x5_init);
 692 module_exit(spcp8x5_exit);
 693
 694 MODULE_DESCRIPTION(DRIVER_DESC);
 695 MODULE_VERSION(DRIVER_VERSION);
 696 MODULE_LICENSE("GPL");
 697
 698 module_param(debug, bool, S_IRUGO | S_IWUSR);
 699 MODULE_PARM_DESC(debug, "Debug enabled or not");