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 bool 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 struct spcp8x5_private {
 155         spinlock_t      lock;
 156         enum spcp8x5_type       type;
 157         wait_queue_head_t       delta_msr_wait;
 158         u8                      line_control;
 159         u8                      line_status;
 160 };
 161
 162 /* desc : when device plug in,this function would be called.
 163  * thanks to usb_serial subsystem,then do almost every things for us. And what
 164  * we should do just alloc the buffer */
 165 static int spcp8x5_startup(struct usb_serial *serial)
 166 {
 167         struct spcp8x5_private *priv;
 168         int i;
 169         enum spcp8x5_type type = SPCP825_007_TYPE;
 170         u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
 171
 172         if (product == 0x0201)
 173                 type = SPCP825_007_TYPE;
 174         else if (product == 0x0231)
 175                 type = SPCP835_TYPE;
 176         else if (product == 0x0235)
 177                 type = SPCP825_008_TYPE;
 178         else if (product == 0x0204)
 179                 type = SPCP825_INTERMATIC_TYPE;
 180         else if (product == 0x0471 &&
 181                  serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
 182                 type = SPCP825_PHILIP_TYPE;
 183         dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
 184
 185         for (i = 0; i < serial->num_ports; ++i) {
 186                 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
 187                 if (!priv)
 188                         goto cleanup;
 189
 190                 spin_lock_init(&priv->lock);
 191                 init_waitqueue_head(&priv->delta_msr_wait);
 192                 priv->type = type;
 193                 usb_set_serial_port_data(serial->port[i] , priv);
 194         }
 195
 196         return 0;
 197 cleanup:
 198         for (--i; i >= 0; --i) {
 199                 priv = usb_get_serial_port_data(serial->port[i]);
 200                 kfree(priv);
 201                 usb_set_serial_port_data(serial->port[i] , NULL);
 202         }
 203         return -ENOMEM;
 204 }
 205
 206 /* call when the device plug out. free all the memory alloced by probe */
 207 static void spcp8x5_release(struct usb_serial *serial)
 208 {
 209         int i;
 210
 211         for (i = 0; i < serial->num_ports; i++)
 212                 kfree(usb_get_serial_port_data(serial->port[i]));
 213 }
 214
 215 /* set the modem control line of the device.
 216  * NOTE spcp825-007 not supported this */
 217 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
 218                                 enum spcp8x5_type type)
 219 {
 220         int retval;
 221         u8 mcr = 0 ;
 222
 223         if (type == SPCP825_007_TYPE)
 224                 return -EPERM;
 225
 226         mcr = (unsigned short)value;
 227         retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 228                                  SET_UART_STATUS_TYPE, SET_UART_STATUS,
 229                                  mcr, 0x04, NULL, 0, 100);
 230         if (retval != 0)
 231                 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
 232         return retval;
 233 }
 234
 235 /* get the modem status register of the device
 236  * NOTE spcp825-007 not supported this */
 237 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
 238                            enum spcp8x5_type type)
 239 {
 240         u8 *status_buffer;
 241         int ret;
 242
 243         /* I return Permited not support here but seem inval device
 244          * is more fix */
 245         if (type == SPCP825_007_TYPE)
 246                 return -EPERM;
 247         if (status == NULL)
 248                 return -EINVAL;
 249
 250         status_buffer = kmalloc(1, GFP_KERNEL);
 251         if (!status_buffer)
 252                 return -ENOMEM;
 253         status_buffer[0] = status[0];
 254
 255         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 256                               GET_UART_STATUS, GET_UART_STATUS_TYPE,
 257                               0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
 258         if (ret < 0)
 259                 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
 260                         status_buffer, ret);
 261
 262         dev_dbg(&dev->dev, "0xc0:0x22:0:6  %d - 0x%p ", ret, status_buffer);
 263         status[0] = status_buffer[0];
 264         kfree(status_buffer);
 265
 266         return ret;
 267 }
 268
 269 /* select the work mode.
 270  * NOTE this function not supported by spcp825-007 */
 271 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
 272                                  u16 index, enum spcp8x5_type type)
 273 {
 274         int ret;
 275
 276         /* I return Permited not support here but seem inval device
 277          * is more fix */
 278         if (type == SPCP825_007_TYPE)
 279                 return;
 280
 281         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 282                               SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
 283                               value, index, NULL, 0, 100);
 284         dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
 285         if (ret < 0)
 286                 dev_dbg(&dev->dev,
 287                         "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
 288 }
 289
 290 static int spcp8x5_carrier_raised(struct usb_serial_port *port)
 291 {
 292         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 293         if (priv->line_status & MSR_STATUS_LINE_DCD)
 294                 return 1;
 295         return 0;
 296 }
 297
 298 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
 299 {
 300         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 301         unsigned long flags;
 302         u8 control;
 303
 304         spin_lock_irqsave(&priv->lock, flags);
 305         if (on)
 306                 priv->line_control = MCR_CONTROL_LINE_DTR
 307                                                 | MCR_CONTROL_LINE_RTS;
 308         else
 309                 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
 310                                                 | MCR_CONTROL_LINE_RTS);
 311         control = priv->line_control;
 312         spin_unlock_irqrestore(&priv->lock, flags);
 313         spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 314 }
 315
 316 static void spcp8x5_init_termios(struct tty_struct *tty)
 317 {
 318         /* for the 1st time call this function */
 319         *(tty->termios) = tty_std_termios;
 320         tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
 321         tty->termios->c_ispeed = 115200;
 322         tty->termios->c_ospeed = 115200;
 323 }
 324
 325 /* set the serial param for transfer. we should check if we really need to
 326  * transfer. if we set flow control we should do this too. */
 327 static void spcp8x5_set_termios(struct tty_struct *tty,
 328                 struct usb_serial_port *port, struct ktermios *old_termios)
 329 {
 330         struct usb_serial *serial = port->serial;
 331         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 332         unsigned long flags;
 333         unsigned int cflag = tty->termios->c_cflag;
 334         unsigned int old_cflag = old_termios->c_cflag;
 335         unsigned short uartdata;
 336         unsigned char buf[2] = {0, 0};
 337         int baud;
 338         int i;
 339         u8 control;
 340
 341
 342         /* check that they really want us to change something */
 343         if (!tty_termios_hw_change(tty->termios, old_termios))
 344                 return;
 345
 346         /* set DTR/RTS active */
 347         spin_lock_irqsave(&priv->lock, flags);
 348         control = priv->line_control;
 349         if ((old_cflag & CBAUD) == B0) {
 350                 priv->line_control |= MCR_DTR;
 351                 if (!(old_cflag & CRTSCTS))
 352                         priv->line_control |= MCR_RTS;
 353         }
 354         if (control != priv->line_control) {
 355                 control = priv->line_control;
 356                 spin_unlock_irqrestore(&priv->lock, flags);
 357                 spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
 358         } else {
 359                 spin_unlock_irqrestore(&priv->lock, flags);
 360         }
 361
 362         /* Set Baud Rate */
 363         baud = tty_get_baud_rate(tty);
 364         switch (baud) {
 365         case 300:       buf[0] = 0x00;  break;
 366         case 600:       buf[0] = 0x01;  break;
 367         case 1200:      buf[0] = 0x02;  break;
 368         case 2400:      buf[0] = 0x03;  break;
 369         case 4800:      buf[0] = 0x04;  break;
 370         case 9600:      buf[0] = 0x05;  break;
 371         case 19200:     buf[0] = 0x07;  break;
 372         case 38400:     buf[0] = 0x09;  break;
 373         case 57600:     buf[0] = 0x0a;  break;
 374         case 115200:    buf[0] = 0x0b;  break;
 375         case 230400:    buf[0] = 0x0c;  break;
 376         case 460800:    buf[0] = 0x0d;  break;
 377         case 921600:    buf[0] = 0x0e;  break;
 378 /*      case 1200000:   buf[0] = 0x0f;  break; */
 379 /*      case 2400000:   buf[0] = 0x10;  break; */
 380         case 3000000:   buf[0] = 0x11;  break;
 381 /*      case 6000000:   buf[0] = 0x12;  break; */
 382         case 0:
 383         case 1000000:
 384                         buf[0] = 0x0b;  break;
 385         default:
 386                 dev_err(&port->dev, "spcp825 driver does not support the "
 387                         "baudrate requested, using default of 9600.\n");
 388         }
 389
 390         /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
 391         if (cflag & CSIZE) {
 392                 switch (cflag & CSIZE) {
 393                 case CS5:
 394                         buf[1] |= SET_UART_FORMAT_SIZE_5;
 395                         break;
 396                 case CS6:
 397                         buf[1] |= SET_UART_FORMAT_SIZE_6;
 398                         break;
 399                 case CS7:
 400                         buf[1] |= SET_UART_FORMAT_SIZE_7;
 401                         break;
 402                 default:
 403                 case CS8:
 404                         buf[1] |= SET_UART_FORMAT_SIZE_8;
 405                         break;
 406                 }
 407         }
 408
 409         /* Set Stop bit2 : 0:1bit 1:2bit */
 410         buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
 411                                      SET_UART_FORMAT_STOP_1;
 412
 413         /* Set Parity bit3-4 01:Odd 11:Even */
 414         if (cflag & PARENB) {
 415                 buf[1] |= (cflag & PARODD) ?
 416                 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
 417         } else
 418                 buf[1] |= SET_UART_FORMAT_PAR_NONE;
 419
 420         uartdata = buf[0] | buf[1]<<8;
 421
 422         i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 423                             SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
 424                             uartdata, 0, NULL, 0, 100);
 425         if (i < 0)
 426                 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
 427                         uartdata, i);
 428         dev_dbg(&port->dev, "0x21:0x40:0:0  %d\n", i);
 429
 430         if (cflag & CRTSCTS) {
 431                 /* enable hardware flow control */
 432                 spcp8x5_set_workMode(serial->dev, 0x000a,
 433                                      SET_WORKING_MODE_U2C, priv->type);
 434         }
 435 }
 436
 437 /* open the serial port. do some usb system call. set termios and get the line
 438  * status of the device. */
 439 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
 440 {
 441         struct ktermios tmp_termios;
 442         struct usb_serial *serial = port->serial;
 443         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 444         int ret;
 445         unsigned long flags;
 446         u8 status = 0x30;
 447         /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
 448
 449         usb_clear_halt(serial->dev, port->write_urb->pipe);
 450         usb_clear_halt(serial->dev, port->read_urb->pipe);
 451
 452         ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 453                               0x09, 0x00,
 454                               0x01, 0x00, NULL, 0x00, 100);
 455         if (ret)
 456                 return ret;
 457
 458         spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
 459
 460         /* Setup termios */
 461         if (tty)
 462                 spcp8x5_set_termios(tty, port, &tmp_termios);
 463
 464         spcp8x5_get_msr(serial->dev, &status, priv->type);
 465
 466         /* may be we should update uart status here but now we did not do */
 467         spin_lock_irqsave(&priv->lock, flags);
 468         priv->line_status = status & 0xf0 ;
 469         spin_unlock_irqrestore(&priv->lock, flags);
 470
 471         port->port.drain_delay = 256;
 472
 473         return usb_serial_generic_open(tty, port);
 474 }
 475
 476 static void spcp8x5_process_read_urb(struct urb *urb)
 477 {
 478         struct usb_serial_port *port = urb->context;
 479         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 480         struct tty_struct *tty;
 481         unsigned char *data = urb->transfer_buffer;
 482         unsigned long flags;
 483         u8 status;
 484         char tty_flag;
 485
 486         /* get tty_flag from status */
 487         tty_flag = TTY_NORMAL;
 488
 489         spin_lock_irqsave(&priv->lock, flags);
 490         status = priv->line_status;
 491         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
 492         spin_unlock_irqrestore(&priv->lock, flags);
 493         /* wake up the wait for termios */
 494         wake_up_interruptible(&priv->delta_msr_wait);
 495
 496         if (!urb->actual_length)
 497                 return;
 498
 499         tty = tty_port_tty_get(&port->port);
 500         if (!tty)
 501                 return;
 502
 503         if (status & UART_STATE_TRANSIENT_MASK) {
 504                 /* break takes precedence over parity, which takes precedence
 505                  * over framing errors */
 506                 if (status & UART_BREAK_ERROR)
 507                         tty_flag = TTY_BREAK;
 508                 else if (status & UART_PARITY_ERROR)
 509                         tty_flag = TTY_PARITY;
 510                 else if (status & UART_FRAME_ERROR)
 511                         tty_flag = TTY_FRAME;
 512                 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
 513
 514                 /* overrun is special, not associated with a char */
 515                 if (status & UART_OVERRUN_ERROR)
 516                         tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 517
 518                 if (status & UART_DCD)
 519                         usb_serial_handle_dcd_change(port, tty,
 520                                    priv->line_status & MSR_STATUS_LINE_DCD);
 521         }
 522
 523         tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
 524                                                         urb->actual_length);
 525         tty_flip_buffer_push(tty);
 526         tty_kref_put(tty);
 527 }
 528
 529 static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
 530                                    unsigned int arg)
 531 {
 532         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 533         unsigned long flags;
 534         unsigned int prevstatus;
 535         unsigned int status;
 536         unsigned int changed;
 537
 538         spin_lock_irqsave(&priv->lock, flags);
 539         prevstatus = priv->line_status;
 540         spin_unlock_irqrestore(&priv->lock, flags);
 541
 542         while (1) {
 543                 /* wake up in bulk read */
 544                 interruptible_sleep_on(&priv->delta_msr_wait);
 545
 546                 /* see if a signal did it */
 547                 if (signal_pending(current))
 548                         return -ERESTARTSYS;
 549
 550                 spin_lock_irqsave(&priv->lock, flags);
 551                 status = priv->line_status;
 552                 spin_unlock_irqrestore(&priv->lock, flags);
 553
 554                 changed = prevstatus^status;
 555
 556                 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
 557                     ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
 558                     ((arg & TIOCM_CD)  && (changed & MSR_STATUS_LINE_DCD)) ||
 559                     ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
 560                         return 0;
 561
 562                 prevstatus = status;
 563         }
 564         /* NOTREACHED */
 565         return 0;
 566 }
 567
 568 static int spcp8x5_ioctl(struct tty_struct *tty,
 569                          unsigned int cmd, unsigned long arg)
 570 {
 571         struct usb_serial_port *port = tty->driver_data;
 572
 573         dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__,
 574                 port->number, cmd);
 575
 576         switch (cmd) {
 577         case TIOCMIWAIT:
 578                 dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
 579                         port->number);
 580                 return spcp8x5_wait_modem_info(port, arg);
 581
 582         default:
 583                 dev_dbg(&port->dev, "%s not supported = 0x%04x", __func__,
 584                         cmd);
 585                 break;
 586         }
 587
 588         return -ENOIOCTLCMD;
 589 }
 590
 591 static int spcp8x5_tiocmset(struct tty_struct *tty,
 592                             unsigned int set, unsigned int clear)
 593 {
 594         struct usb_serial_port *port = tty->driver_data;
 595         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 596         unsigned long flags;
 597         u8 control;
 598
 599         spin_lock_irqsave(&priv->lock, flags);
 600         if (set & TIOCM_RTS)
 601                 priv->line_control |= MCR_RTS;
 602         if (set & TIOCM_DTR)
 603                 priv->line_control |= MCR_DTR;
 604         if (clear & TIOCM_RTS)
 605                 priv->line_control &= ~MCR_RTS;
 606         if (clear & TIOCM_DTR)
 607                 priv->line_control &= ~MCR_DTR;
 608         control = priv->line_control;
 609         spin_unlock_irqrestore(&priv->lock, flags);
 610
 611         return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 612 }
 613
 614 static int spcp8x5_tiocmget(struct tty_struct *tty)
 615 {
 616         struct usb_serial_port *port = tty->driver_data;
 617         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 618         unsigned long flags;
 619         unsigned int mcr;
 620         unsigned int status;
 621         unsigned int result;
 622
 623         spin_lock_irqsave(&priv->lock, flags);
 624         mcr = priv->line_control;
 625         status = priv->line_status;
 626         spin_unlock_irqrestore(&priv->lock, flags);
 627
 628         result = ((mcr & MCR_DTR)                       ? TIOCM_DTR : 0)
 629                   | ((mcr & MCR_RTS)                    ? TIOCM_RTS : 0)
 630                   | ((status & MSR_STATUS_LINE_CTS)     ? TIOCM_CTS : 0)
 631                   | ((status & MSR_STATUS_LINE_DSR)     ? TIOCM_DSR : 0)
 632                   | ((status & MSR_STATUS_LINE_RI)      ? TIOCM_RI  : 0)
 633                   | ((status & MSR_STATUS_LINE_DCD)     ? TIOCM_CD  : 0);
 634
 635         return result;
 636 }
 637
 638 /* All of the device info needed for the spcp8x5 SIO serial converter */
 639 static struct usb_serial_driver spcp8x5_device = {
 640         .driver = {
 641                 .owner =        THIS_MODULE,
 642                 .name =         "SPCP8x5",
 643         },
 644         .id_table               = id_table,
 645         .num_ports              = 1,
 646         .open                   = spcp8x5_open,
 647         .dtr_rts                = spcp8x5_dtr_rts,
 648         .carrier_raised         = spcp8x5_carrier_raised,
 649         .set_termios            = spcp8x5_set_termios,
 650         .init_termios           = spcp8x5_init_termios,
 651         .ioctl                  = spcp8x5_ioctl,
 652         .tiocmget               = spcp8x5_tiocmget,
 653         .tiocmset               = spcp8x5_tiocmset,
 654         .attach                 = spcp8x5_startup,
 655         .release                = spcp8x5_release,
 656         .process_read_urb       = spcp8x5_process_read_urb,
 657 };
 658
 659 static struct usb_serial_driver * const serial_drivers[] = {
 660         &spcp8x5_device, NULL
 661 };
 662
 663 module_usb_serial_driver(serial_drivers, id_table);
 664
 665 MODULE_DESCRIPTION(DRIVER_DESC);
 666 MODULE_VERSION(DRIVER_VERSION);
 667 MODULE_LICENSE("GPL");
 668
 669 module_param(debug, bool, S_IRUGO | S_IWUSR);
 670 MODULE_PARM_DESC(debug, "Debug enabled or not");