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 .probe = usb_serial_probe, 157 .disconnect = usb_serial_disconnect, 158 .id_table = id_table, 159 }; 160 161 162 struct spcp8x5_private { 163 spinlock_t lock; 164 enum spcp8x5_type type; 165 wait_queue_head_t delta_msr_wait; 166 u8 line_control; 167 u8 line_status; 168 }; 169 170 /* desc : when device plug in,this function would be called. 171 * thanks to usb_serial subsystem,then do almost every things for us. And what 172 * we should do just alloc the buffer */ 173 static int spcp8x5_startup(struct usb_serial *serial) 174 { 175 struct spcp8x5_private *priv; 176 int i; 177 enum spcp8x5_type type = SPCP825_007_TYPE; 178 u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); 179 180 if (product == 0x0201) 181 type = SPCP825_007_TYPE; 182 else if (product == 0x0231) 183 type = SPCP835_TYPE; 184 else if (product == 0x0235) 185 type = SPCP825_008_TYPE; 186 else if (product == 0x0204) 187 type = SPCP825_INTERMATIC_TYPE; 188 else if (product == 0x0471 && 189 serial->dev->descriptor.idVendor == cpu_to_le16(0x081e)) 190 type = SPCP825_PHILIP_TYPE; 191 dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type); 192 193 for (i = 0; i < serial->num_ports; ++i) { 194 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL); 195 if (!priv) 196 goto cleanup; 197 198 spin_lock_init(&priv->lock); 199 init_waitqueue_head(&priv->delta_msr_wait); 200 priv->type = type; 201 usb_set_serial_port_data(serial->port[i] , priv); 202 } 203 204 return 0; 205 cleanup: 206 for (--i; i >= 0; --i) { 207 priv = usb_get_serial_port_data(serial->port[i]); 208 kfree(priv); 209 usb_set_serial_port_data(serial->port[i] , NULL); 210 } 211 return -ENOMEM; 212 } 213 214 /* call when the device plug out. free all the memory alloced by probe */ 215 static void spcp8x5_release(struct usb_serial *serial) 216 { 217 int i; 218 219 for (i = 0; i < serial->num_ports; i++) 220 kfree(usb_get_serial_port_data(serial->port[i])); 221 } 222 223 /* set the modem control line of the device. 224 * NOTE spcp825-007 not supported this */ 225 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value, 226 enum spcp8x5_type type) 227 { 228 int retval; 229 u8 mcr = 0 ; 230 231 if (type == SPCP825_007_TYPE) 232 return -EPERM; 233 234 mcr = (unsigned short)value; 235 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 236 SET_UART_STATUS_TYPE, SET_UART_STATUS, 237 mcr, 0x04, NULL, 0, 100); 238 if (retval != 0) 239 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval); 240 return retval; 241 } 242 243 /* get the modem status register of the device 244 * NOTE spcp825-007 not supported this */ 245 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status, 246 enum spcp8x5_type type) 247 { 248 u8 *status_buffer; 249 int ret; 250 251 /* I return Permited not support here but seem inval device 252 * is more fix */ 253 if (type == SPCP825_007_TYPE) 254 return -EPERM; 255 if (status == NULL) 256 return -EINVAL; 257 258 status_buffer = kmalloc(1, GFP_KERNEL); 259 if (!status_buffer) 260 return -ENOMEM; 261 status_buffer[0] = status[0]; 262 263 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 264 GET_UART_STATUS, GET_UART_STATUS_TYPE, 265 0, GET_UART_STATUS_MSR, status_buffer, 1, 100); 266 if (ret < 0) 267 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)", 268 status_buffer, ret); 269 270 dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer); 271 status[0] = status_buffer[0]; 272 kfree(status_buffer); 273 274 return ret; 275 } 276 277 /* select the work mode. 278 * NOTE this function not supported by spcp825-007 */ 279 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value, 280 u16 index, enum spcp8x5_type type) 281 { 282 int ret; 283 284 /* I return Permited not support here but seem inval device 285 * is more fix */ 286 if (type == SPCP825_007_TYPE) 287 return; 288 289 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 290 SET_WORKING_MODE_TYPE, SET_WORKING_MODE, 291 value, index, NULL, 0, 100); 292 dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index); 293 if (ret < 0) 294 dev_dbg(&dev->dev, 295 "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret); 296 } 297 298 static int spcp8x5_carrier_raised(struct usb_serial_port *port) 299 { 300 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 301 if (priv->line_status & MSR_STATUS_LINE_DCD) 302 return 1; 303 return 0; 304 } 305 306 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) 307 { 308 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 309 unsigned long flags; 310 u8 control; 311 312 spin_lock_irqsave(&priv->lock, flags); 313 if (on) 314 priv->line_control = MCR_CONTROL_LINE_DTR 315 | MCR_CONTROL_LINE_RTS; 316 else 317 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR 318 | MCR_CONTROL_LINE_RTS); 319 control = priv->line_control; 320 spin_unlock_irqrestore(&priv->lock, flags); 321 spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); 322 } 323 324 static void spcp8x5_init_termios(struct tty_struct *tty) 325 { 326 /* for the 1st time call this function */ 327 *(tty->termios) = tty_std_termios; 328 tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; 329 tty->termios->c_ispeed = 115200; 330 tty->termios->c_ospeed = 115200; 331 } 332 333 /* set the serial param for transfer. we should check if we really need to 334 * transfer. if we set flow control we should do this too. */ 335 static void spcp8x5_set_termios(struct tty_struct *tty, 336 struct usb_serial_port *port, struct ktermios *old_termios) 337 { 338 struct usb_serial *serial = port->serial; 339 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 340 unsigned long flags; 341 unsigned int cflag = tty->termios->c_cflag; 342 unsigned int old_cflag = old_termios->c_cflag; 343 unsigned short uartdata; 344 unsigned char buf[2] = {0, 0}; 345 int baud; 346 int i; 347 u8 control; 348 349 350 /* check that they really want us to change something */ 351 if (!tty_termios_hw_change(tty->termios, old_termios)) 352 return; 353 354 /* set DTR/RTS active */ 355 spin_lock_irqsave(&priv->lock, flags); 356 control = priv->line_control; 357 if ((old_cflag & CBAUD) == B0) { 358 priv->line_control |= MCR_DTR; 359 if (!(old_cflag & CRTSCTS)) 360 priv->line_control |= MCR_RTS; 361 } 362 if (control != priv->line_control) { 363 control = priv->line_control; 364 spin_unlock_irqrestore(&priv->lock, flags); 365 spcp8x5_set_ctrlLine(serial->dev, control , priv->type); 366 } else { 367 spin_unlock_irqrestore(&priv->lock, flags); 368 } 369 370 /* Set Baud Rate */ 371 baud = tty_get_baud_rate(tty); 372 switch (baud) { 373 case 300: buf[0] = 0x00; break; 374 case 600: buf[0] = 0x01; break; 375 case 1200: buf[0] = 0x02; break; 376 case 2400: buf[0] = 0x03; break; 377 case 4800: buf[0] = 0x04; break; 378 case 9600: buf[0] = 0x05; break; 379 case 19200: buf[0] = 0x07; break; 380 case 38400: buf[0] = 0x09; break; 381 case 57600: buf[0] = 0x0a; break; 382 case 115200: buf[0] = 0x0b; break; 383 case 230400: buf[0] = 0x0c; break; 384 case 460800: buf[0] = 0x0d; break; 385 case 921600: buf[0] = 0x0e; break; 386 /* case 1200000: buf[0] = 0x0f; break; */ 387 /* case 2400000: buf[0] = 0x10; break; */ 388 case 3000000: buf[0] = 0x11; break; 389 /* case 6000000: buf[0] = 0x12; break; */ 390 case 0: 391 case 1000000: 392 buf[0] = 0x0b; break; 393 default: 394 dev_err(&port->dev, "spcp825 driver does not support the " 395 "baudrate requested, using default of 9600.\n"); 396 } 397 398 /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ 399 if (cflag & CSIZE) { 400 switch (cflag & CSIZE) { 401 case CS5: 402 buf[1] |= SET_UART_FORMAT_SIZE_5; 403 break; 404 case CS6: 405 buf[1] |= SET_UART_FORMAT_SIZE_6; 406 break; 407 case CS7: 408 buf[1] |= SET_UART_FORMAT_SIZE_7; 409 break; 410 default: 411 case CS8: 412 buf[1] |= SET_UART_FORMAT_SIZE_8; 413 break; 414 } 415 } 416 417 /* Set Stop bit2 : 0:1bit 1:2bit */ 418 buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : 419 SET_UART_FORMAT_STOP_1; 420 421 /* Set Parity bit3-4 01:Odd 11:Even */ 422 if (cflag & PARENB) { 423 buf[1] |= (cflag & PARODD) ? 424 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; 425 } else 426 buf[1] |= SET_UART_FORMAT_PAR_NONE; 427 428 uartdata = buf[0] | buf[1]<<8; 429 430 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 431 SET_UART_FORMAT_TYPE, SET_UART_FORMAT, 432 uartdata, 0, NULL, 0, 100); 433 if (i < 0) 434 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", 435 uartdata, i); 436 dbg("0x21:0x40:0:0 %d", i); 437 438 if (cflag & CRTSCTS) { 439 /* enable hardware flow control */ 440 spcp8x5_set_workMode(serial->dev, 0x000a, 441 SET_WORKING_MODE_U2C, priv->type); 442 } 443 } 444 445 /* open the serial port. do some usb system call. set termios and get the line 446 * status of the device. */ 447 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) 448 { 449 struct ktermios tmp_termios; 450 struct usb_serial *serial = port->serial; 451 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 452 int ret; 453 unsigned long flags; 454 u8 status = 0x30; 455 /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */ 456 457 dbg("%s - port %d", __func__, port->number); 458 459 usb_clear_halt(serial->dev, port->write_urb->pipe); 460 usb_clear_halt(serial->dev, port->read_urb->pipe); 461 462 ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 463 0x09, 0x00, 464 0x01, 0x00, NULL, 0x00, 100); 465 if (ret) 466 return ret; 467 468 spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type); 469 470 /* Setup termios */ 471 if (tty) 472 spcp8x5_set_termios(tty, port, &tmp_termios); 473 474 spcp8x5_get_msr(serial->dev, &status, priv->type); 475 476 /* may be we should update uart status here but now we did not do */ 477 spin_lock_irqsave(&priv->lock, flags); 478 priv->line_status = status & 0xf0 ; 479 spin_unlock_irqrestore(&priv->lock, flags); 480 481 port->port.drain_delay = 256; 482 483 return usb_serial_generic_open(tty, port); 484 } 485 486 static void spcp8x5_process_read_urb(struct urb *urb) 487 { 488 struct usb_serial_port *port = urb->context; 489 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 490 struct tty_struct *tty; 491 unsigned char *data = urb->transfer_buffer; 492 unsigned long flags; 493 u8 status; 494 char tty_flag; 495 496 /* get tty_flag from status */ 497 tty_flag = TTY_NORMAL; 498 499 spin_lock_irqsave(&priv->lock, flags); 500 status = priv->line_status; 501 priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 502 spin_unlock_irqrestore(&priv->lock, flags); 503 /* wake up the wait for termios */ 504 wake_up_interruptible(&priv->delta_msr_wait); 505 506 if (!urb->actual_length) 507 return; 508 509 tty = tty_port_tty_get(&port->port); 510 if (!tty) 511 return; 512 513 if (status & UART_STATE_TRANSIENT_MASK) { 514 /* break takes precedence over parity, which takes precedence 515 * over framing errors */ 516 if (status & UART_BREAK_ERROR) 517 tty_flag = TTY_BREAK; 518 else if (status & UART_PARITY_ERROR) 519 tty_flag = TTY_PARITY; 520 else if (status & UART_FRAME_ERROR) 521 tty_flag = TTY_FRAME; 522 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); 523 524 /* overrun is special, not associated with a char */ 525 if (status & UART_OVERRUN_ERROR) 526 tty_insert_flip_char(tty, 0, TTY_OVERRUN); 527 528 if (status & UART_DCD) 529 usb_serial_handle_dcd_change(port, tty, 530 priv->line_status & MSR_STATUS_LINE_DCD); 531 } 532 533 tty_insert_flip_string_fixed_flag(tty, data, tty_flag, 534 urb->actual_length); 535 tty_flip_buffer_push(tty); 536 tty_kref_put(tty); 537 } 538 539 static int spcp8x5_wait_modem_info(struct usb_serial_port *port, 540 unsigned int arg) 541 { 542 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 543 unsigned long flags; 544 unsigned int prevstatus; 545 unsigned int status; 546 unsigned int changed; 547 548 spin_lock_irqsave(&priv->lock, flags); 549 prevstatus = priv->line_status; 550 spin_unlock_irqrestore(&priv->lock, flags); 551 552 while (1) { 553 /* wake up in bulk read */ 554 interruptible_sleep_on(&priv->delta_msr_wait); 555 556 /* see if a signal did it */ 557 if (signal_pending(current)) 558 return -ERESTARTSYS; 559 560 spin_lock_irqsave(&priv->lock, flags); 561 status = priv->line_status; 562 spin_unlock_irqrestore(&priv->lock, flags); 563 564 changed = prevstatus^status; 565 566 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) || 567 ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) || 568 ((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) || 569 ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS))) 570 return 0; 571 572 prevstatus = status; 573 } 574 /* NOTREACHED */ 575 return 0; 576 } 577 578 static int spcp8x5_ioctl(struct tty_struct *tty, 579 unsigned int cmd, unsigned long arg) 580 { 581 struct usb_serial_port *port = tty->driver_data; 582 dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); 583 584 switch (cmd) { 585 case TIOCMIWAIT: 586 dbg("%s (%d) TIOCMIWAIT", __func__, port->number); 587 return spcp8x5_wait_modem_info(port, arg); 588 589 default: 590 dbg("%s not supported = 0x%04x", __func__, cmd); 591 break; 592 } 593 594 return -ENOIOCTLCMD; 595 } 596 597 static int spcp8x5_tiocmset(struct tty_struct *tty, 598 unsigned int set, unsigned int clear) 599 { 600 struct usb_serial_port *port = tty->driver_data; 601 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 602 unsigned long flags; 603 u8 control; 604 605 spin_lock_irqsave(&priv->lock, flags); 606 if (set & TIOCM_RTS) 607 priv->line_control |= MCR_RTS; 608 if (set & TIOCM_DTR) 609 priv->line_control |= MCR_DTR; 610 if (clear & TIOCM_RTS) 611 priv->line_control &= ~MCR_RTS; 612 if (clear & TIOCM_DTR) 613 priv->line_control &= ~MCR_DTR; 614 control = priv->line_control; 615 spin_unlock_irqrestore(&priv->lock, flags); 616 617 return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); 618 } 619 620 static int spcp8x5_tiocmget(struct tty_struct *tty) 621 { 622 struct usb_serial_port *port = tty->driver_data; 623 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 624 unsigned long flags; 625 unsigned int mcr; 626 unsigned int status; 627 unsigned int result; 628 629 spin_lock_irqsave(&priv->lock, flags); 630 mcr = priv->line_control; 631 status = priv->line_status; 632 spin_unlock_irqrestore(&priv->lock, flags); 633 634 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) 635 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) 636 | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) 637 | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) 638 | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) 639 | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); 640 641 return result; 642 } 643 644 /* All of the device info needed for the spcp8x5 SIO serial converter */ 645 static struct usb_serial_driver spcp8x5_device = { 646 .driver = { 647 .owner = THIS_MODULE, 648 .name = "SPCP8x5", 649 }, 650 .id_table = id_table, 651 .num_ports = 1, 652 .open = spcp8x5_open, 653 .dtr_rts = spcp8x5_dtr_rts, 654 .carrier_raised = spcp8x5_carrier_raised, 655 .set_termios = spcp8x5_set_termios, 656 .init_termios = spcp8x5_init_termios, 657 .ioctl = spcp8x5_ioctl, 658 .tiocmget = spcp8x5_tiocmget, 659 .tiocmset = spcp8x5_tiocmset, 660 .attach = spcp8x5_startup, 661 .release = spcp8x5_release, 662 .process_read_urb = spcp8x5_process_read_urb, 663 }; 664 665 static struct usb_serial_driver * const serial_drivers[] = { 666 &spcp8x5_device, NULL 667 }; 668 669 module_usb_serial_driver(spcp8x5_driver, serial_drivers); 670 671 MODULE_DESCRIPTION(DRIVER_DESC); 672 MODULE_VERSION(DRIVER_VERSION); 673 MODULE_LICENSE("GPL"); 674 675 module_param(debug, bool, S_IRUGO | S_IWUSR); 676 MODULE_PARM_DESC(debug, "Debug enabled or not"); 677