1 /* 2 * spcp8x5 USB to serial adaptor driver 3 * 4 * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) 5 * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn) 6 * Copyright (C) 2006 S1 Corp. 7 * 8 * Original driver for 2.6.10 pl2303 driver by 9 * Greg Kroah-Hartman (greg@kroah.com) 10 * Changes for 2.6.20 by Harald Klein <hari@vt100.at> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * 18 */ 19 #include <linux/kernel.h> 20 #include <linux/errno.h> 21 #include <linux/init.h> 22 #include <linux/slab.h> 23 #include <linux/tty.h> 24 #include <linux/tty_driver.h> 25 #include <linux/tty_flip.h> 26 #include <linux/module.h> 27 #include <linux/spinlock.h> 28 #include <linux/usb.h> 29 #include <linux/usb/serial.h> 30 31 32 /* Version Information */ 33 #define DRIVER_VERSION "v0.10" 34 #define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver" 35 36 static int debug; 37 38 #define SPCP8x5_007_VID 0x04FC 39 #define SPCP8x5_007_PID 0x0201 40 #define SPCP8x5_008_VID 0x04fc 41 #define SPCP8x5_008_PID 0x0235 42 #define SPCP8x5_PHILIPS_VID 0x0471 43 #define SPCP8x5_PHILIPS_PID 0x081e 44 #define SPCP8x5_INTERMATIC_VID 0x04FC 45 #define SPCP8x5_INTERMATIC_PID 0x0204 46 #define SPCP8x5_835_VID 0x04fc 47 #define SPCP8x5_835_PID 0x0231 48 49 static const struct usb_device_id id_table[] = { 50 { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)}, 51 { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)}, 52 { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)}, 53 { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)}, 54 { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)}, 55 { } /* Terminating entry */ 56 }; 57 MODULE_DEVICE_TABLE(usb, id_table); 58 59 struct spcp8x5_usb_ctrl_arg { 60 u8 type; 61 u8 cmd; 62 u8 cmd_type; 63 u16 value; 64 u16 index; 65 u16 length; 66 }; 67 68 69 /* spcp8x5 spec register define */ 70 #define MCR_CONTROL_LINE_RTS 0x02 71 #define MCR_CONTROL_LINE_DTR 0x01 72 #define MCR_DTR 0x01 73 #define MCR_RTS 0x02 74 75 #define MSR_STATUS_LINE_DCD 0x80 76 #define MSR_STATUS_LINE_RI 0x40 77 #define MSR_STATUS_LINE_DSR 0x20 78 #define MSR_STATUS_LINE_CTS 0x10 79 80 /* verdor command here , we should define myself */ 81 #define SET_DEFAULT 0x40 82 #define SET_DEFAULT_TYPE 0x20 83 84 #define SET_UART_FORMAT 0x40 85 #define SET_UART_FORMAT_TYPE 0x21 86 #define SET_UART_FORMAT_SIZE_5 0x00 87 #define SET_UART_FORMAT_SIZE_6 0x01 88 #define SET_UART_FORMAT_SIZE_7 0x02 89 #define SET_UART_FORMAT_SIZE_8 0x03 90 #define SET_UART_FORMAT_STOP_1 0x00 91 #define SET_UART_FORMAT_STOP_2 0x04 92 #define SET_UART_FORMAT_PAR_NONE 0x00 93 #define SET_UART_FORMAT_PAR_ODD 0x10 94 #define SET_UART_FORMAT_PAR_EVEN 0x30 95 #define SET_UART_FORMAT_PAR_MASK 0xD0 96 #define SET_UART_FORMAT_PAR_SPACE 0x90 97 98 #define GET_UART_STATUS_TYPE 0xc0 99 #define GET_UART_STATUS 0x22 100 #define GET_UART_STATUS_MSR 0x06 101 102 #define SET_UART_STATUS 0x40 103 #define SET_UART_STATUS_TYPE 0x23 104 #define SET_UART_STATUS_MCR 0x0004 105 #define SET_UART_STATUS_MCR_DTR 0x01 106 #define SET_UART_STATUS_MCR_RTS 0x02 107 #define SET_UART_STATUS_MCR_LOOP 0x10 108 109 #define SET_WORKING_MODE 0x40 110 #define SET_WORKING_MODE_TYPE 0x24 111 #define SET_WORKING_MODE_U2C 0x00 112 #define SET_WORKING_MODE_RS485 0x01 113 #define SET_WORKING_MODE_PDMA 0x02 114 #define SET_WORKING_MODE_SPP 0x03 115 116 #define SET_FLOWCTL_CHAR 0x40 117 #define SET_FLOWCTL_CHAR_TYPE 0x25 118 119 #define GET_VERSION 0xc0 120 #define GET_VERSION_TYPE 0x26 121 122 #define SET_REGISTER 0x40 123 #define SET_REGISTER_TYPE 0x27 124 125 #define GET_REGISTER 0xc0 126 #define GET_REGISTER_TYPE 0x28 127 128 #define SET_RAM 0x40 129 #define SET_RAM_TYPE 0x31 130 131 #define GET_RAM 0xc0 132 #define GET_RAM_TYPE 0x32 133 134 /* how come ??? */ 135 #define UART_STATE 0x08 136 #define UART_STATE_TRANSIENT_MASK 0x75 137 #define UART_DCD 0x01 138 #define UART_DSR 0x02 139 #define UART_BREAK_ERROR 0x04 140 #define UART_RING 0x08 141 #define UART_FRAME_ERROR 0x10 142 #define UART_PARITY_ERROR 0x20 143 #define UART_OVERRUN_ERROR 0x40 144 #define UART_CTS 0x80 145 146 enum spcp8x5_type { 147 SPCP825_007_TYPE, 148 SPCP825_008_TYPE, 149 SPCP825_PHILIP_TYPE, 150 SPCP825_INTERMATIC_TYPE, 151 SPCP835_TYPE, 152 }; 153 154 static struct usb_driver spcp8x5_driver = { 155 .name = "spcp8x5", 156 .probe = usb_serial_probe, 157 .disconnect = usb_serial_disconnect, 158 .id_table = id_table, 159 .no_dynamic_id = 1, 160 }; 161 162 163 struct spcp8x5_private { 164 spinlock_t lock; 165 enum spcp8x5_type type; 166 wait_queue_head_t delta_msr_wait; 167 u8 line_control; 168 u8 line_status; 169 }; 170 171 /* desc : when device plug in,this function would be called. 172 * thanks to usb_serial subsystem,then do almost every things for us. And what 173 * we should do just alloc the buffer */ 174 static int spcp8x5_startup(struct usb_serial *serial) 175 { 176 struct spcp8x5_private *priv; 177 int i; 178 enum spcp8x5_type type = SPCP825_007_TYPE; 179 u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); 180 181 if (product == 0x0201) 182 type = SPCP825_007_TYPE; 183 else if (product == 0x0231) 184 type = SPCP835_TYPE; 185 else if (product == 0x0235) 186 type = SPCP825_008_TYPE; 187 else if (product == 0x0204) 188 type = SPCP825_INTERMATIC_TYPE; 189 else if (product == 0x0471 && 190 serial->dev->descriptor.idVendor == cpu_to_le16(0x081e)) 191 type = SPCP825_PHILIP_TYPE; 192 dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type); 193 194 for (i = 0; i < serial->num_ports; ++i) { 195 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL); 196 if (!priv) 197 goto cleanup; 198 199 spin_lock_init(&priv->lock); 200 init_waitqueue_head(&priv->delta_msr_wait); 201 priv->type = type; 202 usb_set_serial_port_data(serial->port[i] , priv); 203 } 204 205 return 0; 206 cleanup: 207 for (--i; i >= 0; --i) { 208 priv = usb_get_serial_port_data(serial->port[i]); 209 kfree(priv); 210 usb_set_serial_port_data(serial->port[i] , NULL); 211 } 212 return -ENOMEM; 213 } 214 215 /* call when the device plug out. free all the memory alloced by probe */ 216 static void spcp8x5_release(struct usb_serial *serial) 217 { 218 int i; 219 220 for (i = 0; i < serial->num_ports; i++) 221 kfree(usb_get_serial_port_data(serial->port[i])); 222 } 223 224 /* set the modem control line of the device. 225 * NOTE spcp825-007 not supported this */ 226 static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value, 227 enum spcp8x5_type type) 228 { 229 int retval; 230 u8 mcr = 0 ; 231 232 if (type == SPCP825_007_TYPE) 233 return -EPERM; 234 235 mcr = (unsigned short)value; 236 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 237 SET_UART_STATUS_TYPE, SET_UART_STATUS, 238 mcr, 0x04, NULL, 0, 100); 239 if (retval != 0) 240 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval); 241 return retval; 242 } 243 244 /* get the modem status register of the device 245 * NOTE spcp825-007 not supported this */ 246 static int spcp8x5_get_msr(struct usb_device *dev, u8 *status, 247 enum spcp8x5_type type) 248 { 249 u8 *status_buffer; 250 int ret; 251 252 /* I return Permited not support here but seem inval device 253 * is more fix */ 254 if (type == SPCP825_007_TYPE) 255 return -EPERM; 256 if (status == NULL) 257 return -EINVAL; 258 259 status_buffer = kmalloc(1, GFP_KERNEL); 260 if (!status_buffer) 261 return -ENOMEM; 262 status_buffer[0] = status[0]; 263 264 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 265 GET_UART_STATUS, GET_UART_STATUS_TYPE, 266 0, GET_UART_STATUS_MSR, status_buffer, 1, 100); 267 if (ret < 0) 268 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)", 269 status_buffer, ret); 270 271 dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer); 272 status[0] = status_buffer[0]; 273 kfree(status_buffer); 274 275 return ret; 276 } 277 278 /* select the work mode. 279 * NOTE this function not supported by spcp825-007 */ 280 static void spcp8x5_set_workMode(struct usb_device *dev, u16 value, 281 u16 index, enum spcp8x5_type type) 282 { 283 int ret; 284 285 /* I return Permited not support here but seem inval device 286 * is more fix */ 287 if (type == SPCP825_007_TYPE) 288 return; 289 290 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 291 SET_WORKING_MODE_TYPE, SET_WORKING_MODE, 292 value, index, NULL, 0, 100); 293 dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index); 294 if (ret < 0) 295 dev_dbg(&dev->dev, 296 "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret); 297 } 298 299 static int spcp8x5_carrier_raised(struct usb_serial_port *port) 300 { 301 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 302 if (priv->line_status & MSR_STATUS_LINE_DCD) 303 return 1; 304 return 0; 305 } 306 307 static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) 308 { 309 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 310 unsigned long flags; 311 u8 control; 312 313 spin_lock_irqsave(&priv->lock, flags); 314 if (on) 315 priv->line_control = MCR_CONTROL_LINE_DTR 316 | MCR_CONTROL_LINE_RTS; 317 else 318 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR 319 | MCR_CONTROL_LINE_RTS); 320 control = priv->line_control; 321 spin_unlock_irqrestore(&priv->lock, flags); 322 spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); 323 } 324 325 static void spcp8x5_init_termios(struct tty_struct *tty) 326 { 327 /* for the 1st time call this function */ 328 *(tty->termios) = tty_std_termios; 329 tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; 330 tty->termios->c_ispeed = 115200; 331 tty->termios->c_ospeed = 115200; 332 } 333 334 /* set the serial param for transfer. we should check if we really need to 335 * transfer. if we set flow control we should do this too. */ 336 static void spcp8x5_set_termios(struct tty_struct *tty, 337 struct usb_serial_port *port, struct ktermios *old_termios) 338 { 339 struct usb_serial *serial = port->serial; 340 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 341 unsigned long flags; 342 unsigned int cflag = tty->termios->c_cflag; 343 unsigned int old_cflag = old_termios->c_cflag; 344 unsigned short uartdata; 345 unsigned char buf[2] = {0, 0}; 346 int baud; 347 int i; 348 u8 control; 349 350 351 /* check that they really want us to change something */ 352 if (!tty_termios_hw_change(tty->termios, old_termios)) 353 return; 354 355 /* set DTR/RTS active */ 356 spin_lock_irqsave(&priv->lock, flags); 357 control = priv->line_control; 358 if ((old_cflag & CBAUD) == B0) { 359 priv->line_control |= MCR_DTR; 360 if (!(old_cflag & CRTSCTS)) 361 priv->line_control |= MCR_RTS; 362 } 363 if (control != priv->line_control) { 364 control = priv->line_control; 365 spin_unlock_irqrestore(&priv->lock, flags); 366 spcp8x5_set_ctrlLine(serial->dev, control , priv->type); 367 } else { 368 spin_unlock_irqrestore(&priv->lock, flags); 369 } 370 371 /* Set Baud Rate */ 372 baud = tty_get_baud_rate(tty); 373 switch (baud) { 374 case 300: buf[0] = 0x00; break; 375 case 600: buf[0] = 0x01; break; 376 case 1200: buf[0] = 0x02; break; 377 case 2400: buf[0] = 0x03; break; 378 case 4800: buf[0] = 0x04; break; 379 case 9600: buf[0] = 0x05; break; 380 case 19200: buf[0] = 0x07; break; 381 case 38400: buf[0] = 0x09; break; 382 case 57600: buf[0] = 0x0a; break; 383 case 115200: buf[0] = 0x0b; break; 384 case 230400: buf[0] = 0x0c; break; 385 case 460800: buf[0] = 0x0d; break; 386 case 921600: buf[0] = 0x0e; break; 387 /* case 1200000: buf[0] = 0x0f; break; */ 388 /* case 2400000: buf[0] = 0x10; break; */ 389 case 3000000: buf[0] = 0x11; break; 390 /* case 6000000: buf[0] = 0x12; break; */ 391 case 0: 392 case 1000000: 393 buf[0] = 0x0b; break; 394 default: 395 dev_err(&port->dev, "spcp825 driver does not support the " 396 "baudrate requested, using default of 9600.\n"); 397 } 398 399 /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ 400 if (cflag & CSIZE) { 401 switch (cflag & CSIZE) { 402 case CS5: 403 buf[1] |= SET_UART_FORMAT_SIZE_5; 404 break; 405 case CS6: 406 buf[1] |= SET_UART_FORMAT_SIZE_6; 407 break; 408 case CS7: 409 buf[1] |= SET_UART_FORMAT_SIZE_7; 410 break; 411 default: 412 case CS8: 413 buf[1] |= SET_UART_FORMAT_SIZE_8; 414 break; 415 } 416 } 417 418 /* Set Stop bit2 : 0:1bit 1:2bit */ 419 buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : 420 SET_UART_FORMAT_STOP_1; 421 422 /* Set Parity bit3-4 01:Odd 11:Even */ 423 if (cflag & PARENB) { 424 buf[1] |= (cflag & PARODD) ? 425 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; 426 } else 427 buf[1] |= SET_UART_FORMAT_PAR_NONE; 428 429 uartdata = buf[0] | buf[1]<<8; 430 431 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 432 SET_UART_FORMAT_TYPE, SET_UART_FORMAT, 433 uartdata, 0, NULL, 0, 100); 434 if (i < 0) 435 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", 436 uartdata, i); 437 dbg("0x21:0x40:0:0 %d", i); 438 439 if (cflag & CRTSCTS) { 440 /* enable hardware flow control */ 441 spcp8x5_set_workMode(serial->dev, 0x000a, 442 SET_WORKING_MODE_U2C, priv->type); 443 } 444 } 445 446 /* open the serial port. do some usb system call. set termios and get the line 447 * status of the device. */ 448 static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) 449 { 450 struct ktermios tmp_termios; 451 struct usb_serial *serial = port->serial; 452 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 453 int ret; 454 unsigned long flags; 455 u8 status = 0x30; 456 /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */ 457 458 dbg("%s - port %d", __func__, port->number); 459 460 usb_clear_halt(serial->dev, port->write_urb->pipe); 461 usb_clear_halt(serial->dev, port->read_urb->pipe); 462 463 ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 464 0x09, 0x00, 465 0x01, 0x00, NULL, 0x00, 100); 466 if (ret) 467 return ret; 468 469 spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type); 470 471 /* Setup termios */ 472 if (tty) 473 spcp8x5_set_termios(tty, port, &tmp_termios); 474 475 spcp8x5_get_msr(serial->dev, &status, priv->type); 476 477 /* may be we should update uart status here but now we did not do */ 478 spin_lock_irqsave(&priv->lock, flags); 479 priv->line_status = status & 0xf0 ; 480 spin_unlock_irqrestore(&priv->lock, flags); 481 482 port->port.drain_delay = 256; 483 484 return usb_serial_generic_open(tty, port); 485 } 486 487 static void spcp8x5_process_read_urb(struct urb *urb) 488 { 489 struct usb_serial_port *port = urb->context; 490 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 491 struct tty_struct *tty; 492 unsigned char *data = urb->transfer_buffer; 493 unsigned long flags; 494 u8 status; 495 char tty_flag; 496 497 /* get tty_flag from status */ 498 tty_flag = TTY_NORMAL; 499 500 spin_lock_irqsave(&priv->lock, flags); 501 status = priv->line_status; 502 priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 503 spin_unlock_irqrestore(&priv->lock, flags); 504 /* wake up the wait for termios */ 505 wake_up_interruptible(&priv->delta_msr_wait); 506 507 if (!urb->actual_length) 508 return; 509 510 tty = tty_port_tty_get(&port->port); 511 if (!tty) 512 return; 513 514 if (status & UART_STATE_TRANSIENT_MASK) { 515 /* break takes precedence over parity, which takes precedence 516 * over framing errors */ 517 if (status & UART_BREAK_ERROR) 518 tty_flag = TTY_BREAK; 519 else if (status & UART_PARITY_ERROR) 520 tty_flag = TTY_PARITY; 521 else if (status & UART_FRAME_ERROR) 522 tty_flag = TTY_FRAME; 523 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); 524 525 /* overrun is special, not associated with a char */ 526 if (status & UART_OVERRUN_ERROR) 527 tty_insert_flip_char(tty, 0, TTY_OVERRUN); 528 529 if (status & UART_DCD) 530 usb_serial_handle_dcd_change(port, tty, 531 priv->line_status & MSR_STATUS_LINE_DCD); 532 } 533 534 tty_insert_flip_string_fixed_flag(tty, data, tty_flag, 535 urb->actual_length); 536 tty_flip_buffer_push(tty); 537 tty_kref_put(tty); 538 } 539 540 static int spcp8x5_wait_modem_info(struct usb_serial_port *port, 541 unsigned int arg) 542 { 543 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 544 unsigned long flags; 545 unsigned int prevstatus; 546 unsigned int status; 547 unsigned int changed; 548 549 spin_lock_irqsave(&priv->lock, flags); 550 prevstatus = priv->line_status; 551 spin_unlock_irqrestore(&priv->lock, flags); 552 553 while (1) { 554 /* wake up in bulk read */ 555 interruptible_sleep_on(&priv->delta_msr_wait); 556 557 /* see if a signal did it */ 558 if (signal_pending(current)) 559 return -ERESTARTSYS; 560 561 spin_lock_irqsave(&priv->lock, flags); 562 status = priv->line_status; 563 spin_unlock_irqrestore(&priv->lock, flags); 564 565 changed = prevstatus^status; 566 567 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) || 568 ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) || 569 ((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) || 570 ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS))) 571 return 0; 572 573 prevstatus = status; 574 } 575 /* NOTREACHED */ 576 return 0; 577 } 578 579 static int spcp8x5_ioctl(struct tty_struct *tty, struct file *file, 580 unsigned int cmd, unsigned long arg) 581 { 582 struct usb_serial_port *port = tty->driver_data; 583 dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); 584 585 switch (cmd) { 586 case TIOCMIWAIT: 587 dbg("%s (%d) TIOCMIWAIT", __func__, port->number); 588 return spcp8x5_wait_modem_info(port, arg); 589 590 default: 591 dbg("%s not supported = 0x%04x", __func__, cmd); 592 break; 593 } 594 595 return -ENOIOCTLCMD; 596 } 597 598 static int spcp8x5_tiocmset(struct tty_struct *tty, struct file *file, 599 unsigned int set, unsigned int clear) 600 { 601 struct usb_serial_port *port = tty->driver_data; 602 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 603 unsigned long flags; 604 u8 control; 605 606 spin_lock_irqsave(&priv->lock, flags); 607 if (set & TIOCM_RTS) 608 priv->line_control |= MCR_RTS; 609 if (set & TIOCM_DTR) 610 priv->line_control |= MCR_DTR; 611 if (clear & TIOCM_RTS) 612 priv->line_control &= ~MCR_RTS; 613 if (clear & TIOCM_DTR) 614 priv->line_control &= ~MCR_DTR; 615 control = priv->line_control; 616 spin_unlock_irqrestore(&priv->lock, flags); 617 618 return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); 619 } 620 621 static int spcp8x5_tiocmget(struct tty_struct *tty, struct file *file) 622 { 623 struct usb_serial_port *port = tty->driver_data; 624 struct spcp8x5_private *priv = usb_get_serial_port_data(port); 625 unsigned long flags; 626 unsigned int mcr; 627 unsigned int status; 628 unsigned int result; 629 630 spin_lock_irqsave(&priv->lock, flags); 631 mcr = priv->line_control; 632 status = priv->line_status; 633 spin_unlock_irqrestore(&priv->lock, flags); 634 635 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) 636 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) 637 | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) 638 | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) 639 | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) 640 | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); 641 642 return result; 643 } 644 645 /* All of the device info needed for the spcp8x5 SIO serial converter */ 646 static struct usb_serial_driver spcp8x5_device = { 647 .driver = { 648 .owner = THIS_MODULE, 649 .name = "SPCP8x5", 650 }, 651 .id_table = id_table, 652 .usb_driver = &spcp8x5_driver, 653 .num_ports = 1, 654 .open = spcp8x5_open, 655 .dtr_rts = spcp8x5_dtr_rts, 656 .carrier_raised = spcp8x5_carrier_raised, 657 .set_termios = spcp8x5_set_termios, 658 .init_termios = spcp8x5_init_termios, 659 .ioctl = spcp8x5_ioctl, 660 .tiocmget = spcp8x5_tiocmget, 661 .tiocmset = spcp8x5_tiocmset, 662 .attach = spcp8x5_startup, 663 .release = spcp8x5_release, 664 .process_read_urb = spcp8x5_process_read_urb, 665 }; 666 667 static int __init spcp8x5_init(void) 668 { 669 int retval; 670 retval = usb_serial_register(&spcp8x5_device); 671 if (retval) 672 goto failed_usb_serial_register; 673 retval = usb_register(&spcp8x5_driver); 674 if (retval) 675 goto failed_usb_register; 676 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 677 DRIVER_DESC "\n"); 678 return 0; 679 failed_usb_register: 680 usb_serial_deregister(&spcp8x5_device); 681 failed_usb_serial_register: 682 return retval; 683 } 684 685 static void __exit spcp8x5_exit(void) 686 { 687 usb_deregister(&spcp8x5_driver); 688 usb_serial_deregister(&spcp8x5_device); 689 } 690 691 module_init(spcp8x5_init); 692 module_exit(spcp8x5_exit); 693 694 MODULE_DESCRIPTION(DRIVER_DESC); 695 MODULE_VERSION(DRIVER_VERSION); 696 MODULE_LICENSE("GPL"); 697 698 module_param(debug, bool, S_IRUGO | S_IWUSR); 699 MODULE_PARM_DESC(debug, "Debug enabled or not"); 700