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 static struct usb_driver spcp8x5_driver = {
 155         .name =                 "spcp8x5",
 156         .id_table =             id_table,
 157 };
 158
 159
 160 struct spcp8x5_private {
 161         spinlock_t      lock;
 162         enum spcp8x5_type       type;
 163         wait_queue_head_t       delta_msr_wait;
 164         u8                      line_control;
 165         u8                      line_status;
 166 };
 167
 168 /* desc : when device plug in,this function would be called.
 169  * thanks to usb_serial subsystem,then do almost every things for us. And what
 170  * we should do just alloc the buffer */
 171 static int spcp8x5_startup(struct usb_serial *serial)
 172 {
 173         struct spcp8x5_private *priv;
 174         int i;
 175         enum spcp8x5_type type = SPCP825_007_TYPE;
 176         u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
 177
 178         if (product == 0x0201)
 179                 type = SPCP825_007_TYPE;
 180         else if (product == 0x0231)
 181                 type = SPCP835_TYPE;
 182         else if (product == 0x0235)
 183                 type = SPCP825_008_TYPE;
 184         else if (product == 0x0204)
 185                 type = SPCP825_INTERMATIC_TYPE;
 186         else if (product == 0x0471 &&
 187                  serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
 188                 type = SPCP825_PHILIP_TYPE;
 189         dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
 190
 191         for (i = 0; i < serial->num_ports; ++i) {
 192                 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
 193                 if (!priv)
 194                         goto cleanup;
 195
 196                 spin_lock_init(&priv->lock);
 197                 init_waitqueue_head(&priv->delta_msr_wait);
 198                 priv->type = type;
 199                 usb_set_serial_port_data(serial->port[i] , priv);
 200         }
 201
 202         return 0;
 203 cleanup:
 204         for (--i; i >= 0; --i) {
 205                 priv = usb_get_serial_port_data(serial->port[i]);
 206                 kfree(priv);
 207                 usb_set_serial_port_data(serial->port[i] , NULL);
 208         }
 209         return -ENOMEM;
 210 }
 211
 212 /* call when the device plug out. free all the memory alloced by probe */
 213 static void spcp8x5_release(struct usb_serial *serial)
 214 {
 215         int i;
 216
 217         for (i = 0; i < serial->num_ports; i++)
 218                 kfree(usb_get_serial_port_data(serial->port[i]));
 219 }
 220
 221 /* set the modem control line of the device.
 222  * NOTE spcp825-007 not supported this */
 223 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
 224                                 enum spcp8x5_type type)
 225 {
 226         int retval;
 227         u8 mcr = 0 ;
 228
 229         if (type == SPCP825_007_TYPE)
 230                 return -EPERM;
 231
 232         mcr = (unsigned short)value;
 233         retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 234                                  SET_UART_STATUS_TYPE, SET_UART_STATUS,
 235                                  mcr, 0x04, NULL, 0, 100);
 236         if (retval != 0)
 237                 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
 238         return retval;
 239 }
 240
 241 /* get the modem status register of the device
 242  * NOTE spcp825-007 not supported this */
 243 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
 244                            enum spcp8x5_type type)
 245 {
 246         u8 *status_buffer;
 247         int ret;
 248
 249         /* I return Permited not support here but seem inval device
 250          * is more fix */
 251         if (type == SPCP825_007_TYPE)
 252                 return -EPERM;
 253         if (status == NULL)
 254                 return -EINVAL;
 255
 256         status_buffer = kmalloc(1, GFP_KERNEL);
 257         if (!status_buffer)
 258                 return -ENOMEM;
 259         status_buffer[0] = status[0];
 260
 261         ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 262                               GET_UART_STATUS, GET_UART_STATUS_TYPE,
 263                               0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
 264         if (ret < 0)
 265                 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
 266                         status_buffer, ret);
 267
 268         dev_dbg(&dev->dev, "0xc0:0x22:0:6  %d - 0x%p ", ret, status_buffer);
 269         status[0] = status_buffer[0];
 270         kfree(status_buffer);
 271
 272         return ret;
 273 }
 274
 275 /* select the work mode.
 276  * NOTE this function not supported by spcp825-007 */
 277 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
 278                                  u16 index, enum spcp8x5_type type)
 279 {
 280         int ret;
 281
 282         /* I return Permited not support here but seem inval device
 283          * is more fix */
 284         if (type == SPCP825_007_TYPE)
 285                 return;
 286
 287         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 288                               SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
 289                               value, index, NULL, 0, 100);
 290         dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
 291         if (ret < 0)
 292                 dev_dbg(&dev->dev,
 293                         "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
 294 }
 295
 296 static int spcp8x5_carrier_raised(struct usb_serial_port *port)
 297 {
 298         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 299         if (priv->line_status & MSR_STATUS_LINE_DCD)
 300                 return 1;
 301         return 0;
 302 }
 303
 304 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
 305 {
 306         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 307         unsigned long flags;
 308         u8 control;
 309
 310         spin_lock_irqsave(&priv->lock, flags);
 311         if (on)
 312                 priv->line_control = MCR_CONTROL_LINE_DTR
 313                                                 | MCR_CONTROL_LINE_RTS;
 314         else
 315                 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
 316                                                 | MCR_CONTROL_LINE_RTS);
 317         control = priv->line_control;
 318         spin_unlock_irqrestore(&priv->lock, flags);
 319         spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 320 }
 321
 322 static void spcp8x5_init_termios(struct tty_struct *tty)
 323 {
 324         /* for the 1st time call this function */
 325         *(tty->termios) = tty_std_termios;
 326         tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
 327         tty->termios->c_ispeed = 115200;
 328         tty->termios->c_ospeed = 115200;
 329 }
 330
 331 /* set the serial param for transfer. we should check if we really need to
 332  * transfer. if we set flow control we should do this too. */
 333 static void spcp8x5_set_termios(struct tty_struct *tty,
 334                 struct usb_serial_port *port, struct ktermios *old_termios)
 335 {
 336         struct usb_serial *serial = port->serial;
 337         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 338         unsigned long flags;
 339         unsigned int cflag = tty->termios->c_cflag;
 340         unsigned int old_cflag = old_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 (!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_cflag & CBAUD) == B0) {
 356                 priv->line_control |= MCR_DTR;
 357                 if (!(old_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         if (cflag & CSIZE) {
 398                 switch (cflag & CSIZE) {
 399                 case CS5:
 400                         buf[1] |= SET_UART_FORMAT_SIZE_5;
 401                         break;
 402                 case CS6:
 403                         buf[1] |= SET_UART_FORMAT_SIZE_6;
 404                         break;
 405                 case CS7:
 406                         buf[1] |= SET_UART_FORMAT_SIZE_7;
 407                         break;
 408                 default:
 409                 case CS8:
 410                         buf[1] |= SET_UART_FORMAT_SIZE_8;
 411                         break;
 412                 }
 413         }
 414
 415         /* Set Stop bit2 : 0:1bit 1:2bit */
 416         buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
 417                                      SET_UART_FORMAT_STOP_1;
 418
 419         /* Set Parity bit3-4 01:Odd 11:Even */
 420         if (cflag & PARENB) {
 421                 buf[1] |= (cflag & PARODD) ?
 422                 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
 423         } else
 424                 buf[1] |= SET_UART_FORMAT_PAR_NONE;
 425
 426         uartdata = buf[0] | buf[1]<<8;
 427
 428         i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 429                             SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
 430                             uartdata, 0, NULL, 0, 100);
 431         if (i < 0)
 432                 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
 433                         uartdata, i);
 434         dbg("0x21:0x40:0:0  %d", i);
 435
 436         if (cflag & CRTSCTS) {
 437                 /* enable hardware flow control */
 438                 spcp8x5_set_workMode(serial->dev, 0x000a,
 439                                      SET_WORKING_MODE_U2C, priv->type);
 440         }
 441 }
 442
 443 /* open the serial port. do some usb system call. set termios and get the line
 444  * status of the device. */
 445 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
 446 {
 447         struct ktermios tmp_termios;
 448         struct usb_serial *serial = port->serial;
 449         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 450         int ret;
 451         unsigned long flags;
 452         u8 status = 0x30;
 453         /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
 454
 455         usb_clear_halt(serial->dev, port->write_urb->pipe);
 456         usb_clear_halt(serial->dev, port->read_urb->pipe);
 457
 458         ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 459                               0x09, 0x00,
 460                               0x01, 0x00, NULL, 0x00, 100);
 461         if (ret)
 462                 return ret;
 463
 464         spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
 465
 466         /* Setup termios */
 467         if (tty)
 468                 spcp8x5_set_termios(tty, port, &tmp_termios);
 469
 470         spcp8x5_get_msr(serial->dev, &status, priv->type);
 471
 472         /* may be we should update uart status here but now we did not do */
 473         spin_lock_irqsave(&priv->lock, flags);
 474         priv->line_status = status & 0xf0 ;
 475         spin_unlock_irqrestore(&priv->lock, flags);
 476
 477         port->port.drain_delay = 256;
 478
 479         return usb_serial_generic_open(tty, port);
 480 }
 481
 482 static void spcp8x5_process_read_urb(struct urb *urb)
 483 {
 484         struct usb_serial_port *port = urb->context;
 485         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 486         struct tty_struct *tty;
 487         unsigned char *data = urb->transfer_buffer;
 488         unsigned long flags;
 489         u8 status;
 490         char tty_flag;
 491
 492         /* get tty_flag from status */
 493         tty_flag = TTY_NORMAL;
 494
 495         spin_lock_irqsave(&priv->lock, flags);
 496         status = priv->line_status;
 497         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
 498         spin_unlock_irqrestore(&priv->lock, flags);
 499         /* wake up the wait for termios */
 500         wake_up_interruptible(&priv->delta_msr_wait);
 501
 502         if (!urb->actual_length)
 503                 return;
 504
 505         tty = tty_port_tty_get(&port->port);
 506         if (!tty)
 507                 return;
 508
 509         if (status & UART_STATE_TRANSIENT_MASK) {
 510                 /* break takes precedence over parity, which takes precedence
 511                  * over framing errors */
 512                 if (status & UART_BREAK_ERROR)
 513                         tty_flag = TTY_BREAK;
 514                 else if (status & UART_PARITY_ERROR)
 515                         tty_flag = TTY_PARITY;
 516                 else if (status & UART_FRAME_ERROR)
 517                         tty_flag = TTY_FRAME;
 518                 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
 519
 520                 /* overrun is special, not associated with a char */
 521                 if (status & UART_OVERRUN_ERROR)
 522                         tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 523
 524                 if (status & UART_DCD)
 525                         usb_serial_handle_dcd_change(port, tty,
 526                                    priv->line_status & MSR_STATUS_LINE_DCD);
 527         }
 528
 529         tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
 530                                                         urb->actual_length);
 531         tty_flip_buffer_push(tty);
 532         tty_kref_put(tty);
 533 }
 534
 535 static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
 536                                    unsigned int arg)
 537 {
 538         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 539         unsigned long flags;
 540         unsigned int prevstatus;
 541         unsigned int status;
 542         unsigned int changed;
 543
 544         spin_lock_irqsave(&priv->lock, flags);
 545         prevstatus = priv->line_status;
 546         spin_unlock_irqrestore(&priv->lock, flags);
 547
 548         while (1) {
 549                 /* wake up in bulk read */
 550                 interruptible_sleep_on(&priv->delta_msr_wait);
 551
 552                 /* see if a signal did it */
 553                 if (signal_pending(current))
 554                         return -ERESTARTSYS;
 555
 556                 spin_lock_irqsave(&priv->lock, flags);
 557                 status = priv->line_status;
 558                 spin_unlock_irqrestore(&priv->lock, flags);
 559
 560                 changed = prevstatus^status;
 561
 562                 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
 563                     ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
 564                     ((arg & TIOCM_CD)  && (changed & MSR_STATUS_LINE_DCD)) ||
 565                     ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
 566                         return 0;
 567
 568                 prevstatus = status;
 569         }
 570         /* NOTREACHED */
 571         return 0;
 572 }
 573
 574 static int spcp8x5_ioctl(struct tty_struct *tty,
 575                          unsigned int cmd, unsigned long arg)
 576 {
 577         struct usb_serial_port *port = tty->driver_data;
 578         dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
 579
 580         switch (cmd) {
 581         case TIOCMIWAIT:
 582                 dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
 583                 return spcp8x5_wait_modem_info(port, arg);
 584
 585         default:
 586                 dbg("%s not supported = 0x%04x", __func__, cmd);
 587                 break;
 588         }
 589
 590         return -ENOIOCTLCMD;
 591 }
 592
 593 static int spcp8x5_tiocmset(struct tty_struct *tty,
 594                             unsigned int set, unsigned int clear)
 595 {
 596         struct usb_serial_port *port = tty->driver_data;
 597         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 598         unsigned long flags;
 599         u8 control;
 600
 601         spin_lock_irqsave(&priv->lock, flags);
 602         if (set & TIOCM_RTS)
 603                 priv->line_control |= MCR_RTS;
 604         if (set & TIOCM_DTR)
 605                 priv->line_control |= MCR_DTR;
 606         if (clear & TIOCM_RTS)
 607                 priv->line_control &= ~MCR_RTS;
 608         if (clear & TIOCM_DTR)
 609                 priv->line_control &= ~MCR_DTR;
 610         control = priv->line_control;
 611         spin_unlock_irqrestore(&priv->lock, flags);
 612
 613         return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
 614 }
 615
 616 static int spcp8x5_tiocmget(struct tty_struct *tty)
 617 {
 618         struct usb_serial_port *port = tty->driver_data;
 619         struct spcp8x5_private *priv = usb_get_serial_port_data(port);
 620         unsigned long flags;
 621         unsigned int mcr;
 622         unsigned int status;
 623         unsigned int result;
 624
 625         spin_lock_irqsave(&priv->lock, flags);
 626         mcr = priv->line_control;
 627         status = priv->line_status;
 628         spin_unlock_irqrestore(&priv->lock, flags);
 629
 630         result = ((mcr & MCR_DTR)                       ? TIOCM_DTR : 0)
 631                   | ((mcr & MCR_RTS)                    ? TIOCM_RTS : 0)
 632                   | ((status & MSR_STATUS_LINE_CTS)     ? TIOCM_CTS : 0)
 633                   | ((status & MSR_STATUS_LINE_DSR)     ? TIOCM_DSR : 0)
 634                   | ((status & MSR_STATUS_LINE_RI)      ? TIOCM_RI  : 0)
 635                   | ((status & MSR_STATUS_LINE_DCD)     ? TIOCM_CD  : 0);
 636
 637         return result;
 638 }
 639
 640 /* All of the device info needed for the spcp8x5 SIO serial converter */
 641 static struct usb_serial_driver spcp8x5_device = {
 642         .driver = {
 643                 .owner =        THIS_MODULE,
 644                 .name =         "SPCP8x5",
 645         },
 646         .id_table               = id_table,
 647         .num_ports              = 1,
 648         .open                   = spcp8x5_open,
 649         .dtr_rts                = spcp8x5_dtr_rts,
 650         .carrier_raised         = spcp8x5_carrier_raised,
 651         .set_termios            = spcp8x5_set_termios,
 652         .init_termios           = spcp8x5_init_termios,
 653         .ioctl                  = spcp8x5_ioctl,
 654         .tiocmget               = spcp8x5_tiocmget,
 655         .tiocmset               = spcp8x5_tiocmset,
 656         .attach                 = spcp8x5_startup,
 657         .release                = spcp8x5_release,
 658         .process_read_urb       = spcp8x5_process_read_urb,
 659 };
 660
 661 static struct usb_serial_driver * const serial_drivers[] = {
 662         &spcp8x5_device, NULL
 663 };
 664
 665 module_usb_serial_driver(spcp8x5_driver, serial_drivers);
 666
 667 MODULE_DESCRIPTION(DRIVER_DESC);
 668 MODULE_VERSION(DRIVER_VERSION);
 669 MODULE_LICENSE("GPL");
 670
 671 module_param(debug, bool, S_IRUGO | S_IWUSR);
 672 MODULE_PARM_DESC(debug, "Debug enabled or not");