Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / 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 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");