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