]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/usb/serial/ssu100.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
[net-next-2.6.git] / drivers / usb / serial / ssu100.c
CommitLineData
52af9545
BP		 1/*
2 * usb-serial driver for Quatech SSU-100
3 *
4 * based on ftdi_sio.c and the original serqt_usb.c from Quatech
5 *
6 */
7
8#include <linux/errno.h>
9#include <linux/init.h>
10#include <linux/slab.h>
11#include <linux/tty.h>
12#include <linux/tty_driver.h>
13#include <linux/tty_flip.h>
14#include <linux/module.h>
15#include <linux/serial.h>
16#include <linux/usb.h>
17#include <linux/usb/serial.h>
79f203a2 18#include <linux/serial_reg.h>
52af9545
BP		 19#include <linux/uaccess.h>
20
21#define QT_OPEN_CLOSE_CHANNEL 0xca
22#define QT_SET_GET_DEVICE 0xc2
23#define QT_SET_GET_REGISTER 0xc0
24#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc
25#define QT_SET_ATF 0xcd
26#define QT_GET_SET_UART 0xc1
27#define QT_TRANSFER_IN 0xc0
28#define QT_HW_FLOW_CONTROL_MASK 0xc5
29#define QT_SW_FLOW_CONTROL_MASK 0xc6
30
52af9545
BP		 31#define SERIAL_MSR_MASK 0xf0
32
79f203a2 33#define SERIAL_CRTSCTS ((UART_MCR_RTS << 8) | UART_MSR_CTS)
52af9545 34
79f203a2 35#define SERIAL_EVEN_PARITY (UART_LCR_PARITY | UART_LCR_EPAR)
52af9545
BP		 36
37#define MAX_BAUD_RATE 460800
38
39#define ATC_DISABLED 0x00
40#define DUPMODE_BITS 0xc0
41#define RR_BITS 0x03
42#define LOOPMODE_BITS 0x41
43#define RS232_MODE 0x00
44#define RTSCTS_TO_CONNECTOR 0x40
45#define CLKS_X4 0x02
46#define FULLPWRBIT 0x00000080
47#define NEXT_BOARD_POWER_BIT 0x00000004
48
3c35b002 49static int debug;
52af9545
BP		 50
51/* Version Information */
52#define DRIVER_VERSION "v0.1"
53#define DRIVER_DESC "Quatech SSU-100 USB to Serial Driver"
54
55#define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */
56#define QUATECH_SSU100 0xC020 /* SSU100 */
57
58static const struct usb_device_id id_table[] = {
59 {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU100)},
60 {} /* Terminating entry */
61};
62
63MODULE_DEVICE_TABLE(usb, id_table);
64
65
66static struct usb_driver ssu100_driver = {
67 .name = "ssu100",
68 .probe = usb_serial_probe,
69 .disconnect = usb_serial_disconnect,
70 .id_table = id_table,
71 .suspend = usb_serial_suspend,
72 .resume = usb_serial_resume,
73 .no_dynamic_id = 1,
74 .supports_autosuspend = 1,
75};
76
77struct ssu100_port_private {
17523058 78 spinlock_t status_lock;
52af9545
BP		 79 u8 shadowLSR;
80 u8 shadowMSR;
81 wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
82 unsigned short max_packet_size;
f81c83db 83 struct async_icount icount;
52af9545
BP		 84};
85
86static void ssu100_release(struct usb_serial *serial)
87{
88 struct ssu100_port_private *priv = usb_get_serial_port_data(*serial->port);
89
90 dbg("%s", __func__);
91 kfree(priv);
92}
93
94static inline int ssu100_control_msg(struct usb_device *dev,
95 u8 request, u16 data, u16 index)
96{
97 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
98 request, 0x40, data, index,
99 NULL, 0, 300);
100}
101
102static inline int ssu100_setdevice(struct usb_device *dev, u8 *data)
103{
104 u16 x = ((u16)(data[1] << 8) | (u16)(data[0]));
105
106 return ssu100_control_msg(dev, QT_SET_GET_DEVICE, x, 0);
107}
108
109
110static inline int ssu100_getdevice(struct usb_device *dev, u8 *data)
111{
112 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
113 QT_SET_GET_DEVICE, 0xc0, 0, 0,
114 data, 3, 300);
115}
116
117static inline int ssu100_getregister(struct usb_device *dev,
118 unsigned short uart,
119 unsigned short reg,
120 u8 *data)
121{
122 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
123 QT_SET_GET_REGISTER, 0xc0, reg,
124 uart, data, sizeof(*data), 300);
125
126}
127
128
129static inline int ssu100_setregister(struct usb_device *dev,
130 unsigned short uart,
556f1a0e 131 unsigned short reg,
52af9545
BP		 132 u16 data)
133{
556f1a0e 134 u16 value = (data << 8) | reg;
52af9545
BP		 135
136 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
137 QT_SET_GET_REGISTER, 0x40, value, uart,
138 NULL, 0, 300);
139
140}
141
142#define set_mctrl(dev, set) update_mctrl((dev), (set), 0)
143#define clear_mctrl(dev, clear) update_mctrl((dev), 0, (clear))
144
145/* these do not deal with device that have more than 1 port */
146static inline int update_mctrl(struct usb_device *dev, unsigned int set,
147 unsigned int clear)
148{
149 unsigned urb_value;
150 int result;
151
152 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
153 dbg("%s - DTR|RTS not being set|cleared", __func__);
154 return 0; /* no change */
155 }
156
157 clear &= ~set; /* 'set' takes precedence over 'clear' */
158 urb_value = 0;
159 if (set & TIOCM_DTR)
79f203a2 160 urb_value |= UART_MCR_DTR;
52af9545 161 if (set & TIOCM_RTS)
79f203a2 162 urb_value |= UART_MCR_RTS;
52af9545 163
556f1a0e 164 result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
52af9545
BP		 165 if (result < 0)
166 dbg("%s Error from MODEM_CTRL urb", __func__);
167
168 return result;
169}
170
171static int ssu100_initdevice(struct usb_device *dev)
172{
173 u8 *data;
174 int result = 0;
175
176 dbg("%s", __func__);
177
178 data = kzalloc(3, GFP_KERNEL);
179 if (!data)
180 return -ENOMEM;
181
182 result = ssu100_getdevice(dev, data);
183 if (result < 0) {
184 dbg("%s - get_device failed %i", __func__, result);
185 goto out;
186 }
187
188 data[1] &= ~FULLPWRBIT;
189
190 result = ssu100_setdevice(dev, data);
191 if (result < 0) {
192 dbg("%s - setdevice failed %i", __func__, result);
193 goto out;
194 }
195
196 result = ssu100_control_msg(dev, QT_GET_SET_PREBUF_TRIG_LVL, 128, 0);
197 if (result < 0) {
198 dbg("%s - set prebuffer level failed %i", __func__, result);
199 goto out;
200 }
201
202 result = ssu100_control_msg(dev, QT_SET_ATF, ATC_DISABLED, 0);
203 if (result < 0) {
204 dbg("%s - set ATFprebuffer level failed %i", __func__, result);
205 goto out;
206 }
207
208 result = ssu100_getdevice(dev, data);
209 if (result < 0) {
210 dbg("%s - get_device failed %i", __func__, result);
211 goto out;
212 }
213
214 data[0] &= ~(RR_BITS | DUPMODE_BITS);
215 data[0] |= CLKS_X4;
216 data[1] &= ~(LOOPMODE_BITS);
217 data[1] |= RS232_MODE;
218
219 result = ssu100_setdevice(dev, data);
220 if (result < 0) {
221 dbg("%s - setdevice failed %i", __func__, result);
222 goto out;
223 }
224
225out: kfree(data);
226 return result;
227
228}
229
230
231static void ssu100_set_termios(struct tty_struct *tty,
232 struct usb_serial_port *port,
233 struct ktermios *old_termios)
234{
235 struct usb_device *dev = port->serial->dev;
236 struct ktermios *termios = tty->termios;
237 u16 baud, divisor, remainder;
238 unsigned int cflag = termios->c_cflag;
239 u16 urb_value = 0; /* will hold the new flags */
240 int result;
241
242 dbg("%s", __func__);
243
244 if (cflag & PARENB) {
245 if (cflag & PARODD)
79f203a2 246 urb_value |= UART_LCR_PARITY;
52af9545
BP		 247 else
248 urb_value |= SERIAL_EVEN_PARITY;
249 }
250
251 switch (cflag & CSIZE) {
252 case CS5:
79f203a2 253 urb_value |= UART_LCR_WLEN5;
52af9545
BP		 254 break;
255 case CS6:
79f203a2 256 urb_value |= UART_LCR_WLEN6;
52af9545
BP		 257 break;
258 case CS7:
79f203a2 259 urb_value |= UART_LCR_WLEN7;
52af9545
BP		 260 break;
261 default:
262 case CS8:
79f203a2 263 urb_value |= UART_LCR_WLEN8;
52af9545
BP		 264 break;
265 }
266
267 baud = tty_get_baud_rate(tty);
268 if (!baud)
269 baud = 9600;
270
271 dbg("%s - got baud = %d\n", __func__, baud);
272
273
274 divisor = MAX_BAUD_RATE / baud;
275 remainder = MAX_BAUD_RATE % baud;
276 if (((remainder * 2) >= baud) && (baud != 110))
277 divisor++;
278
279 urb_value = urb_value << 8;
280
281 result = ssu100_control_msg(dev, QT_GET_SET_UART, divisor, urb_value);
282 if (result < 0)
283 dbg("%s - set uart failed", __func__);
284
285 if (cflag & CRTSCTS)
286 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
287 SERIAL_CRTSCTS, 0);
288 else
289 result = ssu100_control_msg(dev, QT_HW_FLOW_CONTROL_MASK,
290 0, 0);
291 if (result < 0)
292 dbg("%s - set HW flow control failed", __func__);
293
294 if (I_IXOFF(tty) || I_IXON(tty)) {
295 u16 x = ((u16)(START_CHAR(tty) << 8) | (u16)(STOP_CHAR(tty)));
296
297 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
298 x, 0);
299 } else
300 result = ssu100_control_msg(dev, QT_SW_FLOW_CONTROL_MASK,
301 0, 0);
302
303 if (result < 0)
304 dbg("%s - set SW flow control failed", __func__);
305
306}
307
308
309static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
310{
311 struct usb_device *dev = port->serial->dev;
312 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
313 u8 *data;
314 int result;
17523058 315 unsigned long flags;
52af9545
BP		 316
317 dbg("%s - port %d", __func__, port->number);
318
319 data = kzalloc(2, GFP_KERNEL);
320 if (!data)
321 return -ENOMEM;
322
323 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
324 QT_OPEN_CLOSE_CHANNEL,
325 QT_TRANSFER_IN, 0x01,
326 0, data, 2, 300);
327 if (result < 0) {
328 dbg("%s - open failed %i", __func__, result);
329 kfree(data);
330 return result;
331 }
332
17523058 333 spin_lock_irqsave(&priv->status_lock, flags);
f81c83db
BP		 334 priv->shadowLSR = data[0];
335 priv->shadowMSR = data[1];
17523058 336 spin_unlock_irqrestore(&priv->status_lock, flags);
52af9545
BP		 337
338 kfree(data);
339
340/* set to 9600 */
341 result = ssu100_control_msg(dev, QT_GET_SET_UART, 0x30, 0x0300);
342 if (result < 0)
343 dbg("%s - set uart failed", __func__);
344
345 if (tty)
346 ssu100_set_termios(tty, port, tty->termios);
347
348 return usb_serial_generic_open(tty, port);
349}
350
351static void ssu100_close(struct usb_serial_port *port)
352{
353 dbg("%s", __func__);
354 usb_serial_generic_close(port);
355}
356
357static int get_serial_info(struct usb_serial_port *port,
358 struct serial_struct __user *retinfo)
359{
360 struct serial_struct tmp;
361
362 if (!retinfo)
363 return -EFAULT;
364
365 memset(&tmp, 0, sizeof(tmp));
366 tmp.line = port->serial->minor;
367 tmp.port = 0;
368 tmp.irq = 0;
369 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
370 tmp.xmit_fifo_size = port->bulk_out_size;
371 tmp.baud_base = 9600;
372 tmp.close_delay = 5*HZ;
373 tmp.closing_wait = 30*HZ;
374
375 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
376 return -EFAULT;
377 return 0;
378}
379
f81c83db
BP		 380static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
381{
382 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
383 struct async_icount prev, cur;
384 unsigned long flags;
385
386 spin_lock_irqsave(&priv->status_lock, flags);
387 prev = priv->icount;
388 spin_unlock_irqrestore(&priv->status_lock, flags);
389
390 while (1) {
391 wait_event_interruptible(priv->delta_msr_wait,
392 ((priv->icount.rng != prev.rng) ||
393 (priv->icount.dsr != prev.dsr) ||
394 (priv->icount.dcd != prev.dcd) ||
395 (priv->icount.cts != prev.cts)));
396
397 if (signal_pending(current))
398 return -ERESTARTSYS;
399
400 spin_lock_irqsave(&priv->status_lock, flags);
401 cur = priv->icount;
402 spin_unlock_irqrestore(&priv->status_lock, flags);
403
404 if ((prev.rng == cur.rng) &&
405 (prev.dsr == cur.dsr) &&
406 (prev.dcd == cur.dcd) &&
407 (prev.cts == cur.cts))
408 return -EIO;
409
410 if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
411 (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
412 (arg & TIOCM_CD && (prev.dcd != cur.dcd)) ||
413 (arg & TIOCM_CTS && (prev.cts != cur.cts)))
414 return 0;
415 }
416 return 0;
417}
418
52af9545
BP		 419static int ssu100_ioctl(struct tty_struct *tty, struct file *file,
420 unsigned int cmd, unsigned long arg)
421{
422 struct usb_serial_port *port = tty->driver_data;
423 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
f81c83db 424 void __user *user_arg = (void __user *)arg;
52af9545
BP		 425
426 dbg("%s cmd 0x%04x", __func__, cmd);
427
428 switch (cmd) {
429 case TIOCGSERIAL:
430 return get_serial_info(port,
431 (struct serial_struct __user *) arg);
432
433 case TIOCMIWAIT:
f81c83db
BP		 434 return wait_modem_info(port, arg);
435
436 case TIOCGICOUNT:
437 {
438 struct serial_icounter_struct icount;
439 struct async_icount cnow = priv->icount;
440 memset(&icount, 0, sizeof(icount));
441 icount.cts = cnow.cts;
442 icount.dsr = cnow.dsr;
443 icount.rng = cnow.rng;
444 icount.dcd = cnow.dcd;
445 icount.rx = cnow.rx;
446 icount.tx = cnow.tx;
447 icount.frame = cnow.frame;
448 icount.overrun = cnow.overrun;
449 icount.parity = cnow.parity;
450 icount.brk = cnow.brk;
451 icount.buf_overrun = cnow.buf_overrun;
452 if (copy_to_user(user_arg, &icount, sizeof(icount)))
453 return -EFAULT;
52af9545 454 return 0;
f81c83db 455 }
52af9545
BP		 456
457 default:
458 break;
459 }
460
461 dbg("%s arg not supported", __func__);
462
463 return -ENOIOCTLCMD;
464}
465
466static void ssu100_set_max_packet_size(struct usb_serial_port *port)
467{
468 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
469 struct usb_serial *serial = port->serial;
470 struct usb_device *udev = serial->dev;
471
472 struct usb_interface *interface = serial->interface;
473 struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
474
475 unsigned num_endpoints;
476 int i;
17523058 477 unsigned long flags;
52af9545
BP		 478
479 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
480 dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
481
482 for (i = 0; i < num_endpoints; i++) {
483 dev_info(&udev->dev, "Endpoint %d MaxPacketSize %d\n", i+1,
484 interface->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
485 ep_desc = &interface->cur_altsetting->endpoint[i].desc;
486 }
487
488 /* set max packet size based on descriptor */
17523058 489 spin_lock_irqsave(&priv->status_lock, flags);
52af9545 490 priv->max_packet_size = ep_desc->wMaxPacketSize;
17523058 491 spin_unlock_irqrestore(&priv->status_lock, flags);
52af9545
BP		 492
493 dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
494}
495
496static int ssu100_attach(struct usb_serial *serial)
497{
498 struct ssu100_port_private *priv;
499 struct usb_serial_port *port = *serial->port;
500
501 dbg("%s", __func__);
502
503 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
504 if (!priv) {
505 dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__,
506 sizeof(*priv));
507 return -ENOMEM;
508 }
509
17523058 510 spin_lock_init(&priv->status_lock);
52af9545
BP		 511 init_waitqueue_head(&priv->delta_msr_wait);
512 usb_set_serial_port_data(port, priv);
52af9545
BP		 513 ssu100_set_max_packet_size(port);
514
515 return ssu100_initdevice(serial->dev);
516}
517
518static int ssu100_tiocmget(struct tty_struct *tty, struct file *file)
519{
520 struct usb_serial_port *port = tty->driver_data;
521 struct usb_device *dev = port->serial->dev;
522 u8 *d;
523 int r;
524
525 dbg("%s\n", __func__);
526
527 d = kzalloc(2, GFP_KERNEL);
528 if (!d)
529 return -ENOMEM;
530
79f203a2 531 r = ssu100_getregister(dev, 0, UART_MCR, d);
52af9545
BP		 532 if (r < 0)
533 goto mget_out;
534
79f203a2 535 r = ssu100_getregister(dev, 0, UART_MSR, d+1);
52af9545
BP		 536 if (r < 0)
537 goto mget_out;
538
79f203a2
BP		 539 r = (d[0] & UART_MCR_DTR ? TIOCM_DTR : 0) |
540 (d[0] & UART_MCR_RTS ? TIOCM_RTS : 0) |
541 (d[1] & UART_MSR_CTS ? TIOCM_CTS : 0) |
542 (d[1] & UART_MSR_DCD ? TIOCM_CAR : 0) |
543 (d[1] & UART_MSR_RI ? TIOCM_RI : 0) |
544 (d[1] & UART_MSR_DSR ? TIOCM_DSR : 0);
52af9545
BP		 545
546mget_out:
547 kfree(d);
548 return r;
549}
550
551static int ssu100_tiocmset(struct tty_struct *tty, struct file *file,
552 unsigned int set, unsigned int clear)
553{
554 struct usb_serial_port *port = tty->driver_data;
555 struct usb_device *dev = port->serial->dev;
556
557 dbg("%s\n", __func__);
558 return update_mctrl(dev, set, clear);
559}
560
561static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
562{
563 struct usb_device *dev = port->serial->dev;
564
565 dbg("%s\n", __func__);
566
567 mutex_lock(&port->serial->disc_mutex);
568 if (!port->serial->disconnected) {
569 /* Disable flow control */
570 if (!on &&
556f1a0e 571 ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
52af9545
BP		 572 dev_err(&port->dev, "error from flowcontrol urb\n");
573 /* drop RTS and DTR */
574 if (on)
575 set_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
576 else
577 clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS);
578 }
579 mutex_unlock(&port->serial->disc_mutex);
580}
581
f81c83db
BP		 582static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
583{
584 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
585 unsigned long flags;
586
587 spin_lock_irqsave(&priv->status_lock, flags);
588 priv->shadowMSR = msr;
589 spin_unlock_irqrestore(&priv->status_lock, flags);
590
591 if (msr & UART_MSR_ANY_DELTA) {
592 /* update input line counters */
593 if (msr & UART_MSR_DCTS)
594 priv->icount.cts++;
595 if (msr & UART_MSR_DDSR)
596 priv->icount.dsr++;
597 if (msr & UART_MSR_DDCD)
598 priv->icount.dcd++;
599 if (msr & UART_MSR_TERI)
600 priv->icount.rng++;
601 wake_up_interruptible(&priv->delta_msr_wait);
602 }
603}
604
6b8f1ca5
BP		 605static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
606 char *tty_flag)
f81c83db
BP		 607{
608 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
609 unsigned long flags;
610
611 spin_lock_irqsave(&priv->status_lock, flags);
612 priv->shadowLSR = lsr;
613 spin_unlock_irqrestore(&priv->status_lock, flags);
614
6b8f1ca5 615 *tty_flag = TTY_NORMAL;
f81c83db 616 if (lsr & UART_LSR_BRK_ERROR_BITS) {
6b8f1ca5
BP		 617 /* we always want to update icount, but we only want to
618 * update tty_flag for one case */
619 if (lsr & UART_LSR_BI) {
f81c83db 620 priv->icount.brk++;
6b8f1ca5
BP		 621 *tty_flag = TTY_BREAK;
622 usb_serial_handle_break(port);
623 }
624 if (lsr & UART_LSR_PE) {
f81c83db 625 priv->icount.parity++;
6b8f1ca5
BP		 626 if (*tty_flag == TTY_NORMAL)
627 *tty_flag = TTY_PARITY;
628 }
629 if (lsr & UART_LSR_FE) {
630 priv->icount.frame++;
631 if (*tty_flag == TTY_NORMAL)
632 *tty_flag = TTY_FRAME;
633 }
634 if (lsr & UART_LSR_OE){
f81c83db 635 priv->icount.overrun++;
6b8f1ca5
BP		 636 if (*tty_flag == TTY_NORMAL)
637 *tty_flag = TTY_OVERRUN;
638 }
f81c83db 639 }
6b8f1ca5 640
f81c83db
BP		 641}
642
52af9545
BP		 643static int ssu100_process_packet(struct tty_struct *tty,
644 struct usb_serial_port *port,
645 struct ssu100_port_private *priv,
646 char *packet, int len)
647{
648 int i;
6b8f1ca5 649 char flag = TTY_NORMAL;
52af9545
BP		 650 char *ch;
651
652 dbg("%s - port %d", __func__, port->number);
653
9b2cef31
BP		 654 if ((len >= 4) &&
655 (packet[0] == 0x1b) && (packet[1] == 0x1b) &&
52af9545 656 ((packet[2] == 0x00) || (packet[2] == 0x01))) {
6b8f1ca5
BP		 657 if (packet[2] == 0x00) {
658 ssu100_update_lsr(port, packet[3], &flag);
659 if (flag == TTY_OVERRUN)
660 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
661 }
f81c83db
BP		 662 if (packet[2] == 0x01)
663 ssu100_update_msr(port, packet[3]);
52af9545
BP		 664
665 len -= 4;
666 ch = packet + 4;
667 } else
668 ch = packet;
669
670 if (!len)
671 return 0; /* status only */
672
673 if (port->port.console && port->sysrq) {
674 for (i = 0; i < len; i++, ch++) {
6ee9f4b4 675 if (!usb_serial_handle_sysrq_char(port, *ch))
52af9545
BP		 676 tty_insert_flip_char(tty, *ch, flag);
677 }
678 } else
679 tty_insert_flip_string_fixed_flag(tty, ch, flag, len);
680
681 return len;
682}
683
684static void ssu100_process_read_urb(struct urb *urb)
685{
686 struct usb_serial_port *port = urb->context;
687 struct ssu100_port_private *priv = usb_get_serial_port_data(port);
688 char *data = (char *)urb->transfer_buffer;
689 struct tty_struct *tty;
690 int count = 0;
691 int i;
692 int len;
693
694 dbg("%s", __func__);
695
696 tty = tty_port_tty_get(&port->port);
697 if (!tty)
698 return;
699
700 for (i = 0; i < urb->actual_length; i += priv->max_packet_size) {
701 len = min_t(int, urb->actual_length - i, priv->max_packet_size);
702 count += ssu100_process_packet(tty, port, priv, &data[i], len);
703 }
704
705 if (count)
706 tty_flip_buffer_push(tty);
707 tty_kref_put(tty);
708}
709
52af9545
BP		 710static struct usb_serial_driver ssu100_device = {
711 .driver = {
712 .owner = THIS_MODULE,
713 .name = "ssu100",
714 },
715 .description = DRIVER_DESC,
716 .id_table = id_table,
717 .usb_driver = &ssu100_driver,
718 .num_ports = 1,
719 .bulk_in_size = 256,
720 .bulk_out_size = 256,
721 .open = ssu100_open,
722 .close = ssu100_close,
723 .attach = ssu100_attach,
724 .release = ssu100_release,
725 .dtr_rts = ssu100_dtr_rts,
726 .process_read_urb = ssu100_process_read_urb,
727 .tiocmget = ssu100_tiocmget,
728 .tiocmset = ssu100_tiocmset,
729 .ioctl = ssu100_ioctl,
730 .set_termios = ssu100_set_termios,
85dee135 731 .disconnect = usb_serial_generic_disconnect,
52af9545
BP		 732};
733
734static int __init ssu100_init(void)
735{
736 int retval;
737
738 dbg("%s", __func__);
739
740 /* register with usb-serial */
741 retval = usb_serial_register(&ssu100_device);
742
743 if (retval)
744 goto failed_usb_sio_register;
745
746 retval = usb_register(&ssu100_driver);
747 if (retval)
748 goto failed_usb_register;
749
750 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
751 DRIVER_DESC "\n");
752
753 return 0;
754
755failed_usb_register:
756 usb_serial_deregister(&ssu100_device);
757failed_usb_sio_register:
758 return retval;
759}
760
761static void __exit ssu100_exit(void)
762{
763 usb_deregister(&ssu100_driver);
764 usb_serial_deregister(&ssu100_device);
765}
766
767module_init(ssu100_init);
768module_exit(ssu100_exit);
769
770MODULE_DESCRIPTION(DRIVER_DESC);
771MODULE_LICENSE("GPL");
772
773module_param(debug, bool, S_IRUGO | S_IWUSR);
774MODULE_PARM_DESC(debug, "Debug enabled or not");
Clone of davem's net-next-2.6 tree