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-rw-r--r--drivers/usb/serial/Kconfig25
-rw-r--r--drivers/usb/serial/Makefile2
-rw-r--r--drivers/usb/serial/aircable.c625
-rw-r--r--drivers/usb/serial/airprime.c261
-rw-r--r--drivers/usb/serial/ark3116.c233
-rw-r--r--drivers/usb/serial/cypress_m8.c129
-rw-r--r--drivers/usb/serial/ftdi_sio.c30
-rw-r--r--drivers/usb/serial/garmin_gps.c219
-rw-r--r--drivers/usb/serial/ipaq.c38
-rw-r--r--drivers/usb/serial/mos7840.c2962
-rw-r--r--drivers/usb/serial/pl2303.c827
-rw-r--r--drivers/usb/serial/pl2303.h4
-rw-r--r--drivers/usb/serial/usb-serial.c28
13 files changed, 4719 insertions, 664 deletions
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index f5b9438c94f0..5076b9d97057 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -53,6 +53,15 @@ config USB_SERIAL_GENERIC
53 support" be compiled as a module for this driver to be used 53 support" be compiled as a module for this driver to be used
54 properly. 54 properly.
55 55
56config USB_SERIAL_AIRCABLE
57 tristate "AIRcable USB Bluetooth Dongle Driver (EXPERIMENTAL)"
58 depends on USB_SERIAL && EXPERIMENTAL
59 help
60 Say Y here if you want to use AIRcable USB Bluetoot Dongle.
61
62 To compile this driver as a module, choose M here: the module
63 will be called aircable.
64
56config USB_SERIAL_AIRPRIME 65config USB_SERIAL_AIRPRIME
57 tristate "USB AirPrime CDMA Wireless Driver" 66 tristate "USB AirPrime CDMA Wireless Driver"
58 depends on USB_SERIAL 67 depends on USB_SERIAL
@@ -413,6 +422,21 @@ config USB_SERIAL_MCT_U232
413 To compile this driver as a module, choose M here: the 422 To compile this driver as a module, choose M here: the
414 module will be called mct_u232. 423 module will be called mct_u232.
415 424
425config USB_SERIAL_MOS7840
426 tristate "USB Moschip 7840/7820 USB Serial Driver"
427 depends on USB_SERIAL
428 ---help---
429 Say Y here if you want to use a MCS7840 Quad-Serial or MCS7820
430 Dual-Serial port device from MosChip Semiconductor.
431
432 The MCS7840 and MCS7820 have been developed to connect a wide range
433 of standard serial devices to a USB host. The MCS7840 has a USB
434 device controller connected to four (4) individual UARTs while the
435 MCS7820 controller connects to two (2) individual UARTs.
436
437 To compile this driver as a module, choose M here: the
438 module will be called mos7840. If unsure, choose N.
439
416config USB_SERIAL_NAVMAN 440config USB_SERIAL_NAVMAN
417 tristate "USB Navman GPS device" 441 tristate "USB Navman GPS device"
418 depends on USB_SERIAL 442 depends on USB_SERIAL
@@ -526,5 +550,6 @@ config USB_EZUSB
526 depends on USB_SERIAL_KEYSPAN_PDA || USB_SERIAL_XIRCOM || USB_SERIAL_KEYSPAN || USB_SERIAL_WHITEHEAT 550 depends on USB_SERIAL_KEYSPAN_PDA || USB_SERIAL_XIRCOM || USB_SERIAL_KEYSPAN || USB_SERIAL_WHITEHEAT
527 default y 551 default y
528 552
553
529endmenu 554endmenu
530 555
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 8efed2ce1ba3..8dce83340e31 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -11,6 +11,7 @@ usbserial-obj-$(CONFIG_USB_EZUSB) += ezusb.o
11 11
12usbserial-objs := usb-serial.o generic.o bus.o $(usbserial-obj-y) 12usbserial-objs := usb-serial.o generic.o bus.o $(usbserial-obj-y)
13 13
14obj-$(CONFIG_USB_SERIAL_AIRCABLE) += aircable.o
14obj-$(CONFIG_USB_SERIAL_AIRPRIME) += airprime.o 15obj-$(CONFIG_USB_SERIAL_AIRPRIME) += airprime.o
15obj-$(CONFIG_USB_SERIAL_ARK3116) += ark3116.o 16obj-$(CONFIG_USB_SERIAL_ARK3116) += ark3116.o
16obj-$(CONFIG_USB_SERIAL_BELKIN) += belkin_sa.o 17obj-$(CONFIG_USB_SERIAL_BELKIN) += belkin_sa.o
@@ -33,6 +34,7 @@ obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += keyspan_pda.o
33obj-$(CONFIG_USB_SERIAL_KLSI) += kl5kusb105.o 34obj-$(CONFIG_USB_SERIAL_KLSI) += kl5kusb105.o
34obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o 35obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o
35obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o 36obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o
37obj-$(CONFIG_USB_SERIAL_MOS7840) += mos7840.o
36obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o 38obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o
37obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o 39obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o
38obj-$(CONFIG_USB_SERIAL_OPTION) += option.o 40obj-$(CONFIG_USB_SERIAL_OPTION) += option.o
diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
new file mode 100644
index 000000000000..2ccd9ded52a5
--- /dev/null
+++ b/drivers/usb/serial/aircable.c
@@ -0,0 +1,625 @@
1/*
2 * AIRcable USB Bluetooth Dongle Driver.
3 *
4 * Copyright (C) 2006 Manuel Francisco Naranjo (naranjo.manuel@gmail.com)
5 * This program is free software; you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License version 2 as published by the
7 * Free Software Foundation.
8 *
9 * The device works as an standard CDC device, it has 2 interfaces, the first
10 * one is for firmware access and the second is the serial one.
11 * The protocol is very simply, there are two posibilities reading or writing.
12 * When writting the first urb must have a Header that starts with 0x20 0x29 the
13 * next two bytes must say how much data will be sended.
14 * When reading the process is almost equal except that the header starts with
15 * 0x00 0x20.
16 *
17 * The device simply need some stuff to understand data comming from the usb
18 * buffer: The First and Second byte is used for a Header, the Third and Fourth
19 * tells the device the amount of information the package holds.
20 * Packages are 60 bytes long Header Stuff.
21 * When writting to the device the first two bytes of the header are 0x20 0x29
22 * When reading the bytes are 0x00 0x20, or 0x00 0x10, there is an strange
23 * situation, when too much data arrives to the device because it sends the data
24 * but with out the header. I will use a simply hack to override this situation,
25 * if there is data coming that does not contain any header, then that is data
26 * that must go directly to the tty, as there is no documentation about if there
27 * is any other control code, I will simply check for the first
28 * one.
29 *
30 * The driver registers himself with the USB-serial core and the USB Core. I had
31 * to implement a probe function agains USB-serial, because other way, the
32 * driver was attaching himself to both interfaces. I have tryed with different
33 * configurations of usb_serial_driver with out exit, only the probe function
34 * could handle this correctly.
35 *
36 * I have taken some info from a Greg Kroah-Hartman article:
37 * http://www.linuxjournal.com/article/6573
38 * And from Linux Device Driver Kit CD, which is a great work, the authors taken
39 * the work to recompile lots of information an knowladge in drivers development
40 * and made it all avaible inside a cd.
41 * URL: http://kernel.org/pub/linux/kernel/people/gregkh/ddk/
42 *
43 */
44
45#include <linux/tty.h>
46#include <linux/tty_flip.h>
47#include <linux/circ_buf.h>
48#include <linux/usb.h>
49#include <linux/usb/serial.h>
50
51static int debug;
52
53/* Vendor and Product ID */
54#define AIRCABLE_VID 0x16CA
55#define AIRCABLE_USB_PID 0x1502
56
57/* write buffer size defines */
58#define AIRCABLE_BUF_SIZE 2048
59
60/* Protocol Stuff */
61#define HCI_HEADER_LENGTH 0x4
62#define TX_HEADER_0 0x20
63#define TX_HEADER_1 0x29
64#define RX_HEADER_0 0x00
65#define RX_HEADER_1 0x20
66#define MAX_HCI_FRAMESIZE 60
67#define HCI_COMPLETE_FRAME 64
68
69/* rx_flags */
70#define THROTTLED 0x01
71#define ACTUALLY_THROTTLED 0x02
72
73/*
74 * Version Information
75 */
76#define DRIVER_VERSION "v1.0b2"
77#define DRIVER_AUTHOR "Naranjo, Manuel Francisco <naranjo.manuel@gmail.com>"
78#define DRIVER_DESC "AIRcable USB Driver"
79
80/* ID table that will be registered with USB core */
81static struct usb_device_id id_table [] = {
82 { USB_DEVICE(AIRCABLE_VID, AIRCABLE_USB_PID) },
83 { },
84};
85MODULE_DEVICE_TABLE(usb, id_table);
86
87
88/* Internal Structure */
89struct aircable_private {
90 spinlock_t rx_lock; /* spinlock for the receive lines */
91 struct circ_buf *tx_buf; /* write buffer */
92 struct circ_buf *rx_buf; /* read buffer */
93 int rx_flags; /* for throttilng */
94 struct work_struct rx_work; /* work cue for the receiving line */
95};
96
97/* Private methods */
98
99/* Circular Buffer Methods, code from ti_usb_3410_5052 used */
100/*
101 * serial_buf_clear
102 *
103 * Clear out all data in the circular buffer.
104 */
105static void serial_buf_clear(struct circ_buf *cb)
106{
107 cb->head = cb->tail = 0;
108}
109
110/*
111 * serial_buf_alloc
112 *
113 * Allocate a circular buffer and all associated memory.
114 */
115static struct circ_buf *serial_buf_alloc(void)
116{
117 struct circ_buf *cb;
118 cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL);
119 if (cb == NULL)
120 return NULL;
121 cb->buf = kmalloc(AIRCABLE_BUF_SIZE, GFP_KERNEL);
122 if (cb->buf == NULL) {
123 kfree(cb);
124 return NULL;
125 }
126 serial_buf_clear(cb);
127 return cb;
128}
129
130/*
131 * serial_buf_free
132 *
133 * Free the buffer and all associated memory.
134 */
135static void serial_buf_free(struct circ_buf *cb)
136{
137 kfree(cb->buf);
138 kfree(cb);
139}
140
141/*
142 * serial_buf_data_avail
143 *
144 * Return the number of bytes of data available in the circular
145 * buffer.
146 */
147static int serial_buf_data_avail(struct circ_buf *cb)
148{
149 return CIRC_CNT(cb->head,cb->tail,AIRCABLE_BUF_SIZE);
150}
151
152/*
153 * serial_buf_put
154 *
155 * Copy data data from a user buffer and put it into the circular buffer.
156 * Restrict to the amount of space available.
157 *
158 * Return the number of bytes copied.
159 */
160static int serial_buf_put(struct circ_buf *cb, const char *buf, int count)
161{
162 int c, ret = 0;
163 while (1) {
164 c = CIRC_SPACE_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE);
165 if (count < c)
166 c = count;
167 if (c <= 0)
168 break;
169 memcpy(cb->buf + cb->head, buf, c);
170 cb->head = (cb->head + c) & (AIRCABLE_BUF_SIZE-1);
171 buf += c;
172 count -= c;
173 ret= c;
174 }
175 return ret;
176}
177
178/*
179 * serial_buf_get
180 *
181 * Get data from the circular buffer and copy to the given buffer.
182 * Restrict to the amount of data available.
183 *
184 * Return the number of bytes copied.
185 */
186static int serial_buf_get(struct circ_buf *cb, char *buf, int count)
187{
188 int c, ret = 0;
189 while (1) {
190 c = CIRC_CNT_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE);
191 if (count < c)
192 c = count;
193 if (c <= 0)
194 break;
195 memcpy(buf, cb->buf + cb->tail, c);
196 cb->tail = (cb->tail + c) & (AIRCABLE_BUF_SIZE-1);
197 buf += c;
198 count -= c;
199 ret= c;
200 }
201 return ret;
202}
203
204/* End of circula buffer methods */
205
206static void aircable_send(struct usb_serial_port *port)
207{
208 int count, result;
209 struct aircable_private *priv = usb_get_serial_port_data(port);
210 unsigned char* buf;
211 dbg("%s - port %d", __FUNCTION__, port->number);
212 if (port->write_urb_busy)
213 return;
214
215 count = min(serial_buf_data_avail(priv->tx_buf), MAX_HCI_FRAMESIZE);
216 if (count == 0)
217 return;
218
219 buf = kzalloc(count + HCI_HEADER_LENGTH, GFP_ATOMIC);
220 if (!buf) {
221 err("%s- kzalloc(%d) failed.", __FUNCTION__,
222 count + HCI_HEADER_LENGTH);
223 return;
224 }
225
226 buf[0] = TX_HEADER_0;
227 buf[1] = TX_HEADER_1;
228 buf[2] = (unsigned char)count;
229 buf[3] = (unsigned char)(count >> 8);
230 serial_buf_get(priv->tx_buf,buf + HCI_HEADER_LENGTH, MAX_HCI_FRAMESIZE);
231
232 memcpy(port->write_urb->transfer_buffer, buf,
233 count + HCI_HEADER_LENGTH);
234
235 kfree(buf);
236 port->write_urb_busy = 1;
237 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
238 count + HCI_HEADER_LENGTH,
239 port->write_urb->transfer_buffer);
240 port->write_urb->transfer_buffer_length = count + HCI_HEADER_LENGTH;
241 port->write_urb->dev = port->serial->dev;
242 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
243
244 if (result) {
245 dev_err(&port->dev,
246 "%s - failed submitting write urb, error %d\n",
247 __FUNCTION__, result);
248 port->write_urb_busy = 0;
249 }
250
251 schedule_work(&port->work);
252}
253
254static void aircable_read(void *params)
255{
256 struct usb_serial_port *port = params;
257 struct aircable_private *priv = usb_get_serial_port_data(port);
258 struct tty_struct *tty;
259 unsigned char *data;
260 int count;
261 if (priv->rx_flags & THROTTLED){
262 if (priv->rx_flags & ACTUALLY_THROTTLED)
263 schedule_work(&priv->rx_work);
264 return;
265 }
266
267 /* By now I will flush data to the tty in packages of no more than
268 * 64 bytes, to ensure I do not get throttled.
269 * Ask USB mailing list for better aproach.
270 */
271 tty = port->tty;
272
273 if (!tty)
274 schedule_work(&priv->rx_work);
275
276 count = min(64, serial_buf_data_avail(priv->rx_buf));
277
278 if (count <= 0)
279 return; //We have finished sending everything.
280
281 tty_prepare_flip_string(tty, &data, count);
282 if (!data){
283 err("%s- kzalloc(%d) failed.", __FUNCTION__, count);
284 return;
285 }
286
287 serial_buf_get(priv->rx_buf, data, count);
288
289 tty_flip_buffer_push(tty);
290
291 if (serial_buf_data_avail(priv->rx_buf))
292 schedule_work(&priv->rx_work);
293
294 return;
295}
296/* End of private methods */
297
298static int aircable_probe(struct usb_serial *serial,
299 const struct usb_device_id *id)
300{
301 struct usb_host_interface *iface_desc = serial->interface->cur_altsetting;
302 struct usb_endpoint_descriptor *endpoint;
303 int num_bulk_out=0;
304 int i;
305
306 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
307 endpoint = &iface_desc->endpoint[i].desc;
308 if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
309 ((endpoint->bmAttributes & 3) == 0x02)) {
310 /* we found our bulk out endpoint */
311 dbg("found bulk out on endpoint %d", i);
312 ++num_bulk_out;
313 }
314 }
315
316 if (num_bulk_out == 0) {
317 dbg("Invalid interface, discarding");
318 return -ENODEV;
319 }
320
321 return 0;
322}
323
324static int aircable_attach (struct usb_serial *serial)
325{
326 struct usb_serial_port *port = serial->port[0];
327 struct aircable_private *priv;
328
329 priv = kzalloc(sizeof(struct aircable_private), GFP_KERNEL);
330 if (!priv){
331 err("%s- kmalloc(%Zd) failed.", __FUNCTION__,
332 sizeof(struct aircable_private));
333 return -ENOMEM;
334 }
335
336 /* Allocation of Circular Buffers */
337 priv->tx_buf = serial_buf_alloc();
338 if (priv->tx_buf == NULL) {
339 kfree(priv);
340 return -ENOMEM;
341 }
342
343 priv->rx_buf = serial_buf_alloc();
344 if (priv->rx_buf == NULL) {
345 kfree(priv->tx_buf);
346 kfree(priv);
347 return -ENOMEM;
348 }
349
350 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
351 INIT_WORK(&priv->rx_work, aircable_read, port);
352
353 usb_set_serial_port_data(serial->port[0], priv);
354
355 return 0;
356}
357
358static void aircable_shutdown(struct usb_serial *serial)
359{
360
361 struct usb_serial_port *port = serial->port[0];
362 struct aircable_private *priv = usb_get_serial_port_data(port);
363
364 dbg("%s", __FUNCTION__);
365
366 if (priv) {
367 serial_buf_free(priv->tx_buf);
368 serial_buf_free(priv->rx_buf);
369 usb_set_serial_port_data(port, NULL);
370 kfree(priv);
371 }
372}
373
374static int aircable_write_room(struct usb_serial_port *port)
375{
376 struct aircable_private *priv = usb_get_serial_port_data(port);
377 return serial_buf_data_avail(priv->tx_buf);
378}
379
380static int aircable_write(struct usb_serial_port *port,
381 const unsigned char *source, int count)
382{
383 struct aircable_private *priv = usb_get_serial_port_data(port);
384 int temp;
385
386 dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count);
387
388 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, source);
389
390 if (!count){
391 dbg("%s - write request of 0 bytes", __FUNCTION__);
392 return count;
393 }
394
395 temp = serial_buf_put(priv->tx_buf, source, count);
396
397 aircable_send(port);
398
399 if (count > AIRCABLE_BUF_SIZE)
400 count = AIRCABLE_BUF_SIZE;
401
402 return count;
403
404}
405
406static void aircable_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
407{
408 struct usb_serial_port *port = urb->context;
409 int result;
410
411 dbg("%s - urb->status: %d", __FUNCTION__ , urb->status);
412
413 /* This has been taken from cypress_m8.c cypress_write_int_callback */
414 switch (urb->status) {
415 case 0:
416 /* success */
417 break;
418 case -ECONNRESET:
419 case -ENOENT:
420 case -ESHUTDOWN:
421 /* this urb is terminated, clean up */
422 dbg("%s - urb shutting down with status: %d",
423 __FUNCTION__, urb->status);
424 port->write_urb_busy = 0;
425 return;
426 default:
427 /* error in the urb, so we have to resubmit it */
428 dbg("%s - Overflow in write", __FUNCTION__);
429 dbg("%s - nonzero write bulk status received: %d",
430 __FUNCTION__, urb->status);
431 port->write_urb->transfer_buffer_length = 1;
432 port->write_urb->dev = port->serial->dev;
433 result = usb_submit_urb(port->write_urb, GFP_KERNEL);
434 if (result)
435 dev_err(&urb->dev->dev,
436 "%s - failed resubmitting write urb, error %d\n",
437 __FUNCTION__, result);
438 else
439 return;
440 }
441
442 port->write_urb_busy = 0;
443
444 aircable_send(port);
445}
446
447static void aircable_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
448{
449 struct usb_serial_port *port = urb->context;
450 struct aircable_private *priv = usb_get_serial_port_data(port);
451 struct tty_struct *tty;
452 unsigned long no_packages, remaining, package_length, i;
453 int result, shift = 0;
454 unsigned char *temp;
455
456 dbg("%s - port %d", __FUNCTION__, port->number);
457
458 if (urb->status) {
459 dbg("%s - urb->status = %d", __FUNCTION__, urb->status);
460 if (!port->open_count) {
461 dbg("%s - port is closed, exiting.", __FUNCTION__);
462 return;
463 }
464 if (urb->status == -EPROTO) {
465 dbg("%s - caught -EPROTO, resubmitting the urb",
466 __FUNCTION__);
467 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
468 usb_rcvbulkpipe(port->serial->dev,
469 port->bulk_in_endpointAddress),
470 port->read_urb->transfer_buffer,
471 port->read_urb->transfer_buffer_length,
472 aircable_read_bulk_callback, port);
473
474 result = usb_submit_urb(urb, GFP_ATOMIC);
475 if (result)
476 dev_err(&urb->dev->dev,
477 "%s - failed resubmitting read urb, error %d\n",
478 __FUNCTION__, result);
479 return;
480 }
481 dbg("%s - unable to handle the error, exiting.", __FUNCTION__);
482 return;
483 }
484
485 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
486 urb->actual_length,urb->transfer_buffer);
487
488 tty = port->tty;
489 if (tty && urb->actual_length) {
490 if (urb->actual_length <= 2) {
491 /* This is an incomplete package */
492 serial_buf_put(priv->rx_buf, urb->transfer_buffer,
493 urb->actual_length);
494 } else {
495 temp = urb->transfer_buffer;
496 if (temp[0] == RX_HEADER_0)
497 shift = HCI_HEADER_LENGTH;
498
499 remaining = urb->actual_length;
500 no_packages = urb->actual_length / (HCI_COMPLETE_FRAME);
501
502 if (urb->actual_length % HCI_COMPLETE_FRAME != 0)
503 no_packages+=1;
504
505 for (i = 0; i < no_packages ;i++) {
506 if (remaining > (HCI_COMPLETE_FRAME))
507 package_length = HCI_COMPLETE_FRAME;
508 else
509 package_length = remaining;
510 remaining -= package_length;
511
512 serial_buf_put(priv->rx_buf,
513 urb->transfer_buffer + shift +
514 (HCI_COMPLETE_FRAME) * (i),
515 package_length - shift);
516 }
517 }
518 aircable_read(port);
519 }
520
521 /* Schedule the next read _if_ we are still open */
522 if (port->open_count) {
523 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
524 usb_rcvbulkpipe(port->serial->dev,
525 port->bulk_in_endpointAddress),
526 port->read_urb->transfer_buffer,
527 port->read_urb->transfer_buffer_length,
528 aircable_read_bulk_callback, port);
529
530 result = usb_submit_urb(urb, GFP_ATOMIC);
531 if (result)
532 dev_err(&urb->dev->dev,
533 "%s - failed resubmitting read urb, error %d\n",
534 __FUNCTION__, result);
535 }
536
537 return;
538}
539
540/* Based on ftdi_sio.c throttle */
541static void aircable_throttle(struct usb_serial_port *port)
542{
543 struct aircable_private *priv = usb_get_serial_port_data(port);
544 unsigned long flags;
545
546 dbg("%s - port %d", __FUNCTION__, port->number);
547
548 spin_lock_irqsave(&priv->rx_lock, flags);
549 priv->rx_flags |= THROTTLED;
550 spin_unlock_irqrestore(&priv->rx_lock, flags);
551}
552
553/* Based on ftdi_sio.c unthrottle */
554static void aircable_unthrottle(struct usb_serial_port *port)
555{
556 struct aircable_private *priv = usb_get_serial_port_data(port);
557 int actually_throttled;
558 unsigned long flags;
559
560 dbg("%s - port %d", __FUNCTION__, port->number);
561
562 spin_lock_irqsave(&priv->rx_lock, flags);
563 actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED;
564 priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);
565 spin_unlock_irqrestore(&priv->rx_lock, flags);
566
567 if (actually_throttled)
568 schedule_work(&priv->rx_work);
569}
570
571static struct usb_serial_driver aircable_device = {
572 .description = "aircable",
573 .id_table = id_table,
574 .num_ports = 1,
575 .attach = aircable_attach,
576 .probe = aircable_probe,
577 .shutdown = aircable_shutdown,
578 .write = aircable_write,
579 .write_room = aircable_write_room,
580 .write_bulk_callback = aircable_write_bulk_callback,
581 .read_bulk_callback = aircable_read_bulk_callback,
582 .throttle = aircable_throttle,
583 .unthrottle = aircable_unthrottle,
584};
585
586static struct usb_driver aircable_driver = {
587 .name = "aircable",
588 .probe = usb_serial_probe,
589 .disconnect = usb_serial_disconnect,
590 .id_table = id_table,
591};
592
593static int __init aircable_init (void)
594{
595 int retval;
596 retval = usb_serial_register(&aircable_device);
597 if (retval)
598 goto failed_serial_register;
599 retval = usb_register(&aircable_driver);
600 if (retval)
601 goto failed_usb_register;
602 return 0;
603
604failed_serial_register:
605 usb_serial_deregister(&aircable_device);
606failed_usb_register:
607 return retval;
608}
609
610static void __exit aircable_exit (void)
611{
612 usb_deregister(&aircable_driver);
613 usb_serial_deregister(&aircable_device);
614}
615
616MODULE_AUTHOR(DRIVER_AUTHOR);
617MODULE_DESCRIPTION(DRIVER_DESC);
618MODULE_VERSION(DRIVER_VERSION);
619MODULE_LICENSE("GPL");
620
621module_init(aircable_init);
622module_exit(aircable_exit);
623
624module_param(debug, bool, S_IRUGO | S_IWUSR);
625MODULE_PARM_DESC(debug, "Debug enabled or not");
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c
index 62082532a8b3..6e1a84a858d4 100644
--- a/drivers/usb/serial/airprime.c
+++ b/drivers/usb/serial/airprime.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * AirPrime CDMA Wireless Serial USB driver 2 * AirPrime CDMA Wireless Serial USB driver
3 * 3 *
4 * Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de> 4 * Copyright (C) 2005-2006 Greg Kroah-Hartman <gregkh@suse.de>
5 * 5 *
6 * This program is free software; you can redistribute it and/or 6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 7 * modify it under the terms of the GNU General Public License version
@@ -11,26 +11,264 @@
11#include <linux/kernel.h> 11#include <linux/kernel.h>
12#include <linux/init.h> 12#include <linux/init.h>
13#include <linux/tty.h> 13#include <linux/tty.h>
14#include <linux/tty_flip.h>
14#include <linux/module.h> 15#include <linux/module.h>
15#include <linux/usb.h> 16#include <linux/usb.h>
16#include <linux/usb/serial.h> 17#include <linux/usb/serial.h>
17 18
18static struct usb_device_id id_table [] = { 19static struct usb_device_id id_table [] = {
19 { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */ 20 { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */
20 { USB_DEVICE(0xf3d, 0x0112) }, /* AirPrime CDMA Wireless PC Card */ 21 { USB_DEVICE(0x0f3d, 0x0112) }, /* AirPrime CDMA Wireless PC Card */
21 { USB_DEVICE(0x1410, 0x1110) }, /* Novatel Wireless Merlin CDMA */ 22 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
23 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
22 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless Aircard 580 */ 24 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless Aircard 580 */
23 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ 25 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
26 { USB_DEVICE(0x1410, 0x1110) }, /* Novatel Wireless Merlin CDMA */
24 { }, 27 { },
25}; 28};
26MODULE_DEVICE_TABLE(usb, id_table); 29MODULE_DEVICE_TABLE(usb, id_table);
27 30
31#define URB_TRANSFER_BUFFER_SIZE 4096
32#define NUM_READ_URBS 4
33#define NUM_WRITE_URBS 4
34#define NUM_BULK_EPS 3
35#define MAX_BULK_EPS 6
36
37/* if overridden by the user, then use their value for the size of the
38 * read and write urbs, and the number of endpoints */
39static int buffer_size = URB_TRANSFER_BUFFER_SIZE;
40static int endpoints = NUM_BULK_EPS;
41static int debug;
42struct airprime_private {
43 spinlock_t lock;
44 int outstanding_urbs;
45 int throttled;
46 struct urb *read_urbp[NUM_READ_URBS];
47};
48
49static void airprime_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
50{
51 struct usb_serial_port *port = urb->context;
52 unsigned char *data = urb->transfer_buffer;
53 struct tty_struct *tty;
54 int result;
55
56 dbg("%s - port %d", __FUNCTION__, port->number);
57
58 if (urb->status) {
59 dbg("%s - nonzero read bulk status received: %d",
60 __FUNCTION__, urb->status);
61 /* something happened, so free up the memory for this urb */
62 if (urb->transfer_buffer) {
63 kfree (urb->transfer_buffer);
64 urb->transfer_buffer = NULL;
65 }
66 return;
67 }
68 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
69
70 tty = port->tty;
71 if (tty && urb->actual_length) {
72 tty_insert_flip_string (tty, data, urb->actual_length);
73 tty_flip_buffer_push (tty);
74 }
75
76 result = usb_submit_urb (urb, GFP_ATOMIC);
77 if (result)
78 dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n",
79 __FUNCTION__, result);
80 return;
81}
82
83static void airprime_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
84{
85 struct usb_serial_port *port = urb->context;
86 struct airprime_private *priv = usb_get_serial_port_data(port);
87 unsigned long flags;
88
89 dbg("%s - port %d", __FUNCTION__, port->number);
90
91 /* free up the transfer buffer, as usb_free_urb() does not do this */
92 kfree (urb->transfer_buffer);
93
94 if (urb->status)
95 dbg("%s - nonzero write bulk status received: %d",
96 __FUNCTION__, urb->status);
97 spin_lock_irqsave(&priv->lock, flags);
98 --priv->outstanding_urbs;
99 spin_unlock_irqrestore(&priv->lock, flags);
100
101 usb_serial_port_softint(port);
102}
103
104static int airprime_open(struct usb_serial_port *port, struct file *filp)
105{
106 struct airprime_private *priv = usb_get_serial_port_data(port);
107 struct usb_serial *serial = port->serial;
108 struct urb *urb;
109 char *buffer = NULL;
110 int i;
111 int result = 0;
112
113 dbg("%s - port %d", __FUNCTION__, port->number);
114
115 /* initialize our private data structure if it isn't already created */
116 if (!priv) {
117 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
118 if (!priv) {
119 result = -ENOMEM;
120 goto out;
121 }
122 spin_lock_init(&priv->lock);
123 usb_set_serial_port_data(port, priv);
124 }
125
126 for (i = 0; i < NUM_READ_URBS; ++i) {
127 buffer = kmalloc(buffer_size, GFP_KERNEL);
128 if (!buffer) {
129 dev_err(&port->dev, "%s - out of memory.\n",
130 __FUNCTION__);
131 result = -ENOMEM;
132 goto errout;
133 }
134 urb = usb_alloc_urb(0, GFP_KERNEL);
135 if (!urb) {
136 dev_err(&port->dev, "%s - no more urbs?\n",
137 __FUNCTION__);
138 result = -ENOMEM;
139 goto errout;
140 }
141 usb_fill_bulk_urb(urb, serial->dev,
142 usb_rcvbulkpipe(serial->dev,
143 port->bulk_out_endpointAddress),
144 buffer, buffer_size,
145 airprime_read_bulk_callback, port);
146 result = usb_submit_urb(urb, GFP_KERNEL);
147 if (result) {
148 dev_err(&port->dev,
149 "%s - failed submitting read urb %d for port %d, error %d\n",
150 __FUNCTION__, i, port->number, result);
151 goto errout;
152 }
153 /* remember this urb so we can kill it when the port is closed */
154 priv->read_urbp[i] = urb;
155 }
156 goto out;
157
158 errout:
159 /* some error happened, cancel any submitted urbs and clean up anything that
160 got allocated successfully */
161
162 for ( ; i >= 0; --i) {
163 urb = priv->read_urbp[i];
164 if (urb) {
165 /* This urb was submitted successfully. So we have to
166 cancel it.
167 Unlinking the urb will invoke read_bulk_callback()
168 with an error status, so its transfer buffer will
169 be freed there */
170 if (usb_unlink_urb (urb) != -EINPROGRESS) {
171 /* comments in drivers/usb/core/urb.c say this
172 can only happen if the urb was never submitted,
173 or has completed already.
174 Either way we may have to free the transfer
175 buffer here. */
176 if (urb->transfer_buffer) {
177 kfree (urb->transfer_buffer);
178 urb->transfer_buffer = NULL;
179 }
180 }
181 usb_free_urb (urb);
182 }
183 }
184
185 out:
186 return result;
187}
188
189static void airprime_close(struct usb_serial_port *port, struct file * filp)
190{
191 struct airprime_private *priv = usb_get_serial_port_data(port);
192 int i;
193
194 dbg("%s - port %d", __FUNCTION__, port->number);
195
196 /* killing the urb will invoke read_bulk_callback() with an error status,
197 so the transfer buffer will be freed there */
198 for (i = 0; i < NUM_READ_URBS; ++i) {
199 usb_kill_urb (priv->read_urbp[i]);
200 usb_free_urb (priv->read_urbp[i]);
201 }
202
203 /* free up private structure */
204 kfree (priv);
205 usb_set_serial_port_data(port, NULL);
206}
207
208static int airprime_write(struct usb_serial_port *port,
209 const unsigned char *buf, int count)
210{
211 struct airprime_private *priv = usb_get_serial_port_data(port);
212 struct usb_serial *serial = port->serial;
213 struct urb *urb;
214 unsigned char *buffer;
215 unsigned long flags;
216 int status;
217 dbg("%s - port %d", __FUNCTION__, port->number);
218
219 spin_lock_irqsave(&priv->lock, flags);
220 if (priv->outstanding_urbs > NUM_WRITE_URBS) {
221 spin_unlock_irqrestore(&priv->lock, flags);
222 dbg("%s - write limit hit\n", __FUNCTION__);
223 return 0;
224 }
225 spin_unlock_irqrestore(&priv->lock, flags);
226 buffer = kmalloc(count, GFP_ATOMIC);
227 if (!buffer) {
228 dev_err(&port->dev, "out of memory\n");
229 return -ENOMEM;
230 }
231 urb = usb_alloc_urb(0, GFP_ATOMIC);
232 if (!urb) {
233 dev_err(&port->dev, "no more free urbs\n");
234 kfree (buffer);
235 return -ENOMEM;
236 }
237 memcpy (buffer, buf, count);
238
239 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
240
241 usb_fill_bulk_urb(urb, serial->dev,
242 usb_sndbulkpipe(serial->dev,
243 port->bulk_out_endpointAddress),
244 buffer, count,
245 airprime_write_bulk_callback, port);
246
247 /* send it down the pipe */
248 status = usb_submit_urb(urb, GFP_ATOMIC);
249 if (status) {
250 dev_err(&port->dev,
251 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
252 __FUNCTION__, status);
253 count = status;
254 kfree (buffer);
255 } else {
256 spin_lock_irqsave(&priv->lock, flags);
257 ++priv->outstanding_urbs;
258 spin_unlock_irqrestore(&priv->lock, flags);
259 }
260 /* we are done with this urb, so let the host driver
261 * really free it when it is finished with it */
262 usb_free_urb (urb);
263 return count;
264}
265
28static struct usb_driver airprime_driver = { 266static struct usb_driver airprime_driver = {
29 .name = "airprime", 267 .name = "airprime",
30 .probe = usb_serial_probe, 268 .probe = usb_serial_probe,
31 .disconnect = usb_serial_disconnect, 269 .disconnect = usb_serial_disconnect,
32 .id_table = id_table, 270 .id_table = id_table,
33 .no_dynamic_id = 1, 271 .no_dynamic_id = 1,
34}; 272};
35 273
36static struct usb_serial_driver airprime_device = { 274static struct usb_serial_driver airprime_device = {
@@ -42,13 +280,17 @@ static struct usb_serial_driver airprime_device = {
42 .num_interrupt_in = NUM_DONT_CARE, 280 .num_interrupt_in = NUM_DONT_CARE,
43 .num_bulk_in = NUM_DONT_CARE, 281 .num_bulk_in = NUM_DONT_CARE,
44 .num_bulk_out = NUM_DONT_CARE, 282 .num_bulk_out = NUM_DONT_CARE,
45 .num_ports = 1, 283 .open = airprime_open,
284 .close = airprime_close,
285 .write = airprime_write,
46}; 286};
47 287
48static int __init airprime_init(void) 288static int __init airprime_init(void)
49{ 289{
50 int retval; 290 int retval;
51 291
292 airprime_device.num_ports =
293 (endpoints > 0 && endpoints <= MAX_BULK_EPS) ? endpoints : NUM_BULK_EPS;
52 retval = usb_serial_register(&airprime_device); 294 retval = usb_serial_register(&airprime_device);
53 if (retval) 295 if (retval)
54 return retval; 296 return retval;
@@ -60,6 +302,8 @@ static int __init airprime_init(void)
60 302
61static void __exit airprime_exit(void) 303static void __exit airprime_exit(void)
62{ 304{
305 dbg("%s", __FUNCTION__);
306
63 usb_deregister(&airprime_driver); 307 usb_deregister(&airprime_driver);
64 usb_serial_deregister(&airprime_device); 308 usb_serial_deregister(&airprime_device);
65} 309}
@@ -67,3 +311,10 @@ static void __exit airprime_exit(void)
67module_init(airprime_init); 311module_init(airprime_init);
68module_exit(airprime_exit); 312module_exit(airprime_exit);
69MODULE_LICENSE("GPL"); 313MODULE_LICENSE("GPL");
314
315module_param(debug, bool, S_IRUGO | S_IWUSR);
316MODULE_PARM_DESC(debug, "Debug enabled");
317module_param(buffer_size, int, 0);
318MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers in bytes (default 4096)");
319module_param(endpoints, int, 0);
320MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)");
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index 970d9ef0a7a5..ca52f12f0e24 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -1,4 +1,7 @@
1/* 1/*
2 * Copyright (C) 2006
3 * Simon Schulz (ark3116_driver <at> auctionant.de)
4 *
2 * ark3116 5 * ark3116
3 * - implements a driver for the arkmicro ark3116 chipset (vendor=0x6547, 6 * - implements a driver for the arkmicro ark3116 chipset (vendor=0x6547,
4 * productid=0x0232) (used in a datacable called KQ-U8A) 7 * productid=0x0232) (used in a datacable called KQ-U8A)
@@ -8,8 +11,6 @@
8 * 11 *
9 * - based on logs created by usbsnoopy 12 * - based on logs created by usbsnoopy
10 * 13 *
11 * Author : Simon Schulz [ark3116_driver<AT>auctionant.de]
12 *
13 * This program is free software; you can redistribute it and/or modify it 14 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the 15 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your 16 * Free Software Foundation; either version 2 of the License, or (at your
@@ -22,6 +23,8 @@
22#include <linux/module.h> 23#include <linux/module.h>
23#include <linux/usb.h> 24#include <linux/usb.h>
24#include <linux/usb/serial.h> 25#include <linux/usb/serial.h>
26#include <linux/serial.h>
27#include <asm/uaccess.h>
25 28
26 29
27static int debug; 30static int debug;
@@ -43,10 +46,10 @@ static inline void ARK3116_SND(struct usb_serial *serial, int seq,
43{ 46{
44 int result; 47 int result;
45 result = usb_control_msg(serial->dev, 48 result = usb_control_msg(serial->dev,
46 usb_sndctrlpipe(serial->dev,0), 49 usb_sndctrlpipe(serial->dev, 0),
47 request, requesttype, value, index, 50 request, requesttype, value, index,
48 NULL,0x00, 1000); 51 NULL, 0x00, 1000);
49 dbg("%03d > ok",seq); 52 dbg("%03d > ok", seq);
50} 53}
51 54
52static inline void ARK3116_RCV(struct usb_serial *serial, int seq, 55static inline void ARK3116_RCV(struct usb_serial *serial, int seq,
@@ -56,27 +59,25 @@ static inline void ARK3116_RCV(struct usb_serial *serial, int seq,
56{ 59{
57 int result; 60 int result;
58 result = usb_control_msg(serial->dev, 61 result = usb_control_msg(serial->dev,
59 usb_rcvctrlpipe(serial->dev,0), 62 usb_rcvctrlpipe(serial->dev, 0),
60 request, requesttype, value, index, 63 request, requesttype, value, index,
61 buf, 0x0000001, 1000); 64 buf, 0x0000001, 1000);
62 if (result) 65 if (result)
63 dbg("%03d < %d bytes [0x%02X]",seq, result, buf[0]); 66 dbg("%03d < %d bytes [0x%02X]", seq, result, buf[0]);
64 else 67 else
65 dbg("%03d < 0 bytes", seq); 68 dbg("%03d < 0 bytes", seq);
66} 69}
67 70
68
69static inline void ARK3116_RCV_QUIET(struct usb_serial *serial, 71static inline void ARK3116_RCV_QUIET(struct usb_serial *serial,
70 __u8 request, __u8 requesttype, 72 __u8 request, __u8 requesttype,
71 __u16 value, __u16 index, char *buf) 73 __u16 value, __u16 index, char *buf)
72{ 74{
73 usb_control_msg(serial->dev, 75 usb_control_msg(serial->dev,
74 usb_rcvctrlpipe(serial->dev,0), 76 usb_rcvctrlpipe(serial->dev, 0),
75 request, requesttype, value, index, 77 request, requesttype, value, index,
76 buf, 0x0000001, 1000); 78 buf, 0x0000001, 1000);
77} 79}
78 80
79
80static int ark3116_attach(struct usb_serial *serial) 81static int ark3116_attach(struct usb_serial *serial)
81{ 82{
82 char *buf; 83 char *buf;
@@ -84,10 +85,10 @@ static int ark3116_attach(struct usb_serial *serial)
84 int i; 85 int i;
85 86
86 for (i = 0; i < serial->num_ports; ++i) { 87 for (i = 0; i < serial->num_ports; ++i) {
87 priv = kmalloc (sizeof (struct ark3116_private), GFP_KERNEL); 88 priv = kmalloc(sizeof (struct ark3116_private), GFP_KERNEL);
88 if (!priv) 89 if (!priv)
89 goto cleanup; 90 goto cleanup;
90 memset (priv, 0x00, sizeof (struct ark3116_private)); 91 memset(priv, 0x00, sizeof (struct ark3116_private));
91 spin_lock_init(&priv->lock); 92 spin_lock_init(&priv->lock);
92 93
93 usb_set_serial_port_data(serial->port[i], priv); 94 usb_set_serial_port_data(serial->port[i], priv);
@@ -95,63 +96,62 @@ static int ark3116_attach(struct usb_serial *serial)
95 96
96 buf = kmalloc(1, GFP_KERNEL); 97 buf = kmalloc(1, GFP_KERNEL);
97 if (!buf) { 98 if (!buf) {
98 dbg("error kmalloc -> out of mem ?"); 99 dbg("error kmalloc -> out of mem?");
99 goto cleanup; 100 goto cleanup;
100 } 101 }
101 102
102 /* 3 */ 103 /* 3 */
103 ARK3116_SND(serial, 3,0xFE,0x40,0x0008,0x0002); 104 ARK3116_SND(serial, 3, 0xFE, 0x40, 0x0008, 0x0002);
104 ARK3116_SND(serial, 4,0xFE,0x40,0x0008,0x0001); 105 ARK3116_SND(serial, 4, 0xFE, 0x40, 0x0008, 0x0001);
105 ARK3116_SND(serial, 5,0xFE,0x40,0x0000,0x0008); 106 ARK3116_SND(serial, 5, 0xFE, 0x40, 0x0000, 0x0008);
106 ARK3116_SND(serial, 6,0xFE,0x40,0x0000,0x000B); 107 ARK3116_SND(serial, 6, 0xFE, 0x40, 0x0000, 0x000B);
107 108
108 /* <-- seq7 */ 109 /* <-- seq7 */
109 ARK3116_RCV(serial, 7,0xFE,0xC0,0x0000,0x0003, 0x00, buf); 110 ARK3116_RCV(serial, 7, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf);
110 ARK3116_SND(serial, 8,0xFE,0x40,0x0080,0x0003); 111 ARK3116_SND(serial, 8, 0xFE, 0x40, 0x0080, 0x0003);
111 ARK3116_SND(serial, 9,0xFE,0x40,0x001A,0x0000); 112 ARK3116_SND(serial, 9, 0xFE, 0x40, 0x001A, 0x0000);
112 ARK3116_SND(serial,10,0xFE,0x40,0x0000,0x0001); 113 ARK3116_SND(serial, 10, 0xFE, 0x40, 0x0000, 0x0001);
113 ARK3116_SND(serial,11,0xFE,0x40,0x0000,0x0003); 114 ARK3116_SND(serial, 11, 0xFE, 0x40, 0x0000, 0x0003);
114 115
115 /* <-- seq12 */ 116 /* <-- seq12 */
116 ARK3116_RCV(serial,12,0xFE,0xC0,0x0000,0x0004, 0x00, buf); 117 ARK3116_RCV(serial, 12, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf);
117 ARK3116_SND(serial,13,0xFE,0x40,0x0000,0x0004); 118 ARK3116_SND(serial, 13, 0xFE, 0x40, 0x0000, 0x0004);
118 119
119 /* 14 */ 120 /* 14 */
120 ARK3116_RCV(serial,14,0xFE,0xC0,0x0000,0x0004, 0x00, buf); 121 ARK3116_RCV(serial, 14, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf);
121 ARK3116_SND(serial,15,0xFE,0x40,0x0000,0x0004); 122 ARK3116_SND(serial, 15, 0xFE, 0x40, 0x0000, 0x0004);
122 123
123 /* 16 */ 124 /* 16 */
124 ARK3116_RCV(serial,16,0xFE,0xC0,0x0000,0x0004, 0x00, buf); 125 ARK3116_RCV(serial, 16, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf);
125 /* --> seq17 */ 126 /* --> seq17 */
126 ARK3116_SND(serial,17,0xFE,0x40,0x0001,0x0004); 127 ARK3116_SND(serial, 17, 0xFE, 0x40, 0x0001, 0x0004);
127 128
128 /* <-- seq18 */ 129 /* <-- seq18 */
129 ARK3116_RCV(serial,18,0xFE,0xC0,0x0000,0x0004, 0x01, buf); 130 ARK3116_RCV(serial, 18, 0xFE, 0xC0, 0x0000, 0x0004, 0x01, buf);
130 131
131 /* --> seq19 */ 132 /* --> seq19 */
132 ARK3116_SND(serial,19,0xFE,0x40,0x0003,0x0004); 133 ARK3116_SND(serial, 19, 0xFE, 0x40, 0x0003, 0x0004);
133
134 134
135 /* <-- seq20 */ 135 /* <-- seq20 */
136 /* seems like serial port status info (RTS, CTS,...) */ 136 /* seems like serial port status info (RTS, CTS, ...) */
137 /* returns modem control line status ?! */ 137 /* returns modem control line status?! */
138 ARK3116_RCV(serial,20,0xFE,0xC0,0x0000,0x0006, 0xFF, buf); 138 ARK3116_RCV(serial, 20, 0xFE, 0xC0, 0x0000, 0x0006, 0xFF, buf);
139 139
140 /* set 9600 baud & do some init ?! */ 140 /* set 9600 baud & do some init?! */
141 ARK3116_SND(serial,147,0xFE,0x40,0x0083,0x0003); 141 ARK3116_SND(serial, 147, 0xFE, 0x40, 0x0083, 0x0003);
142 ARK3116_SND(serial,148,0xFE,0x40,0x0038,0x0000); 142 ARK3116_SND(serial, 148, 0xFE, 0x40, 0x0038, 0x0000);
143 ARK3116_SND(serial,149,0xFE,0x40,0x0001,0x0001); 143 ARK3116_SND(serial, 149, 0xFE, 0x40, 0x0001, 0x0001);
144 ARK3116_SND(serial,150,0xFE,0x40,0x0003,0x0003); 144 ARK3116_SND(serial, 150, 0xFE, 0x40, 0x0003, 0x0003);
145 ARK3116_RCV(serial,151,0xFE,0xC0,0x0000,0x0004,0x03, buf); 145 ARK3116_RCV(serial, 151, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf);
146 ARK3116_SND(serial,152,0xFE,0x40,0x0000,0x0003); 146 ARK3116_SND(serial, 152, 0xFE, 0x40, 0x0000, 0x0003);
147 ARK3116_RCV(serial,153,0xFE,0xC0,0x0000,0x0003,0x00, buf); 147 ARK3116_RCV(serial, 153, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf);
148 ARK3116_SND(serial,154,0xFE,0x40,0x0003,0x0003); 148 ARK3116_SND(serial, 154, 0xFE, 0x40, 0x0003, 0x0003);
149 149
150 kfree(buf); 150 kfree(buf);
151 return(0); 151 return 0;
152 152
153cleanup: 153cleanup:
154 for (--i; i>=0; --i) 154 for (--i; i >= 0; --i)
155 usb_set_serial_port_data(serial->port[i], NULL); 155 usb_set_serial_port_data(serial->port[i], NULL);
156 return -ENOMEM; 156 return -ENOMEM;
157} 157}
@@ -180,7 +180,8 @@ static void ark3116_set_termios(struct usb_serial_port *port,
180 spin_lock_irqsave(&priv->lock, flags); 180 spin_lock_irqsave(&priv->lock, flags);
181 if (!priv->termios_initialized) { 181 if (!priv->termios_initialized) {
182 *(port->tty->termios) = tty_std_termios; 182 *(port->tty->termios) = tty_std_termios;
183 port->tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; 183 port->tty->termios->c_cflag = B9600 | CS8
184 | CREAD | HUPCL | CLOCAL;
184 priv->termios_initialized = 1; 185 priv->termios_initialized = 1;
185 } 186 }
186 spin_unlock_irqrestore(&priv->lock, flags); 187 spin_unlock_irqrestore(&priv->lock, flags);
@@ -204,8 +205,8 @@ static void ark3116_set_termios(struct usb_serial_port *port,
204 } 205 }
205 206
206 /* set data bit count (8/7/6/5) */ 207 /* set data bit count (8/7/6/5) */
207 if (cflag & CSIZE){ 208 if (cflag & CSIZE) {
208 switch (cflag & CSIZE){ 209 switch (cflag & CSIZE) {
209 case CS5: 210 case CS5:
210 config |= 0x00; 211 config |= 0x00;
211 dbg("setting CS5"); 212 dbg("setting CS5");
@@ -219,7 +220,8 @@ static void ark3116_set_termios(struct usb_serial_port *port,
219 dbg("setting CS7"); 220 dbg("setting CS7");
220 break; 221 break;
221 default: 222 default:
222 err ("CSIZE was set but not CS5-CS8, using CS8!"); 223 err("CSIZE was set but not CS5-CS8, using CS8!");
224 /* fall through */
223 case CS8: 225 case CS8:
224 config |= 0x03; 226 config |= 0x03;
225 dbg("setting CS8"); 227 dbg("setting CS8");
@@ -227,8 +229,8 @@ static void ark3116_set_termios(struct usb_serial_port *port,
227 } 229 }
228 } 230 }
229 231
230 /* set parity (NONE,EVEN,ODD) */ 232 /* set parity (NONE/EVEN/ODD) */
231 if (cflag & PARENB){ 233 if (cflag & PARENB) {
232 if (cflag & PARODD) { 234 if (cflag & PARODD) {
233 config |= 0x08; 235 config |= 0x08;
234 dbg("setting parity to ODD"); 236 dbg("setting parity to ODD");
@@ -240,20 +242,19 @@ static void ark3116_set_termios(struct usb_serial_port *port,
240 dbg("setting parity to NONE"); 242 dbg("setting parity to NONE");
241 } 243 }
242 244
243 /* SET STOPBIT (1/2) */ 245 /* set stop bit (1/2) */
244 if (cflag & CSTOPB) { 246 if (cflag & CSTOPB) {
245 config |= 0x04; 247 config |= 0x04;
246 dbg ("setting 2 stop bits"); 248 dbg("setting 2 stop bits");
247 } else { 249 } else {
248 dbg ("setting 1 stop bit"); 250 dbg("setting 1 stop bit");
249 } 251 }
250 252
251 253 /* set baudrate */
252 /* set baudrate: */
253 baud = 0; 254 baud = 0;
254 switch (cflag & CBAUD){ 255 switch (cflag & CBAUD) {
255 case B0: 256 case B0:
256 err("can't set 0baud, using 9600 instead"); 257 err("can't set 0 baud, using 9600 instead");
257 break; 258 break;
258 case B75: baud = 75; break; 259 case B75: baud = 75; break;
259 case B150: baud = 150; break; 260 case B150: baud = 150; break;
@@ -285,38 +286,40 @@ static void ark3116_set_termios(struct usb_serial_port *port,
285 */ 286 */
286 if (baud == 460800) 287 if (baud == 460800)
287 /* strange, for 460800 the formula is wrong 288 /* strange, for 460800 the formula is wrong
288 * (dont use round(), then 9600baud is wrong) */ 289 * if using round() then 9600baud is wrong) */
289 ark3116_baud = 7; 290 ark3116_baud = 7;
290 else 291 else
291 ark3116_baud = 3000000 / baud; 292 ark3116_baud = 3000000 / baud;
292 293
293 /* ? */ 294 /* ? */
294 ARK3116_RCV(serial,0,0xFE,0xC0,0x0000,0x0003, 0x03, buf); 295 ARK3116_RCV(serial, 0, 0xFE, 0xC0, 0x0000, 0x0003, 0x03, buf);
296
295 /* offset = buf[0]; */ 297 /* offset = buf[0]; */
296 /* offset = 0x03; */ 298 /* offset = 0x03; */
297 /* dbg("using 0x%04X as target for 0x0003:",0x0080+offset); */ 299 /* dbg("using 0x%04X as target for 0x0003:", 0x0080 + offset); */
298
299 300
300 /* set baudrate */ 301 /* set baudrate */
301 dbg("setting baudrate to %d (->reg=%d)",baud,ark3116_baud); 302 dbg("setting baudrate to %d (->reg=%d)", baud, ark3116_baud);
302 ARK3116_SND(serial,147,0xFE,0x40,0x0083,0x0003); 303 ARK3116_SND(serial, 147, 0xFE, 0x40, 0x0083, 0x0003);
303 ARK3116_SND(serial,148,0xFE,0x40,(ark3116_baud & 0x00FF) ,0x0000); 304 ARK3116_SND(serial, 148, 0xFE, 0x40,
304 ARK3116_SND(serial,149,0xFE,0x40,(ark3116_baud & 0xFF00)>>8,0x0001); 305 (ark3116_baud & 0x00FF), 0x0000);
305 ARK3116_SND(serial,150,0xFE,0x40,0x0003,0x0003); 306 ARK3116_SND(serial, 149, 0xFE, 0x40,
307 (ark3116_baud & 0xFF00) >> 8, 0x0001);
308 ARK3116_SND(serial, 150, 0xFE, 0x40, 0x0003, 0x0003);
306 309
307 /* ? */ 310 /* ? */
308 ARK3116_RCV(serial,151,0xFE,0xC0,0x0000,0x0004,0x03, buf); 311 ARK3116_RCV(serial, 151, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf);
309 ARK3116_SND(serial,152,0xFE,0x40,0x0000,0x0003); 312 ARK3116_SND(serial, 152, 0xFE, 0x40, 0x0000, 0x0003);
310 313
311 /* set data bit count, stop bit count & parity: */ 314 /* set data bit count, stop bit count & parity: */
312 dbg("updating bit count, stop bit or parity (cfg=0x%02X)", config); 315 dbg("updating bit count, stop bit or parity (cfg=0x%02X)", config);
313 ARK3116_RCV(serial,153,0xFE,0xC0,0x0000,0x0003,0x00, buf); 316 ARK3116_RCV(serial, 153, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf);
314 ARK3116_SND(serial,154,0xFE,0x40,config,0x0003); 317 ARK3116_SND(serial, 154, 0xFE, 0x40, config, 0x0003);
315 318
316 if (cflag & CRTSCTS) 319 if (cflag & CRTSCTS)
317 dbg("CRTSCTS not supported by chipset ?!"); 320 dbg("CRTSCTS not supported by chipset?!");
318 321
319 /* TEST ARK3116_SND(154,0xFE,0x40,0xFFFF, 0x0006); */ 322 /* TEST ARK3116_SND(154, 0xFE, 0x40, 0xFFFF, 0x0006); */
320 323
321 kfree(buf); 324 kfree(buf);
322 return; 325 return;
@@ -329,11 +332,11 @@ static int ark3116_open(struct usb_serial_port *port, struct file *filp)
329 char *buf; 332 char *buf;
330 int result = 0; 333 int result = 0;
331 334
332 dbg("%s - port %d", __FUNCTION__, port->number); 335 dbg("%s - port %d", __FUNCTION__, port->number);
333 336
334 buf = kmalloc(1, GFP_KERNEL); 337 buf = kmalloc(1, GFP_KERNEL);
335 if (!buf) { 338 if (!buf) {
336 dbg("error kmalloc -> out of mem ?"); 339 dbg("error kmalloc -> out of mem?");
337 return -ENOMEM; 340 return -ENOMEM;
338 } 341 }
339 342
@@ -342,44 +345,68 @@ static int ark3116_open(struct usb_serial_port *port, struct file *filp)
342 return result; 345 return result;
343 346
344 /* open */ 347 /* open */
345 ARK3116_RCV(serial,111,0xFE,0xC0,0x0000,0x0003, 0x02, buf); 348 ARK3116_RCV(serial, 111, 0xFE, 0xC0, 0x0000, 0x0003, 0x02, buf);
346 349
347 ARK3116_SND(serial,112,0xFE,0x40,0x0082,0x0003); 350 ARK3116_SND(serial, 112, 0xFE, 0x40, 0x0082, 0x0003);
348 ARK3116_SND(serial,113,0xFE,0x40,0x001A,0x0000); 351 ARK3116_SND(serial, 113, 0xFE, 0x40, 0x001A, 0x0000);
349 ARK3116_SND(serial,114,0xFE,0x40,0x0000,0x0001); 352 ARK3116_SND(serial, 114, 0xFE, 0x40, 0x0000, 0x0001);
350 ARK3116_SND(serial,115,0xFE,0x40,0x0002,0x0003); 353 ARK3116_SND(serial, 115, 0xFE, 0x40, 0x0002, 0x0003);
351 354
352 ARK3116_RCV(serial,116,0xFE,0xC0,0x0000,0x0004, 0x03, buf); 355 ARK3116_RCV(serial, 116, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf);
353 ARK3116_SND(serial,117,0xFE,0x40,0x0002,0x0004); 356 ARK3116_SND(serial, 117, 0xFE, 0x40, 0x0002, 0x0004);
354 357
355 ARK3116_RCV(serial,118,0xFE,0xC0,0x0000,0x0004, 0x02, buf); 358 ARK3116_RCV(serial, 118, 0xFE, 0xC0, 0x0000, 0x0004, 0x02, buf);
356 ARK3116_SND(serial,119,0xFE,0x40,0x0000,0x0004); 359 ARK3116_SND(serial, 119, 0xFE, 0x40, 0x0000, 0x0004);
357 360
358 ARK3116_RCV(serial,120,0xFE,0xC0,0x0000,0x0004, 0x00, buf); 361 ARK3116_RCV(serial, 120, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf);
359 362
360 ARK3116_SND(serial,121,0xFE,0x40,0x0001,0x0004); 363 ARK3116_SND(serial, 121, 0xFE, 0x40, 0x0001, 0x0004);
361 364
362 ARK3116_RCV(serial,122,0xFE,0xC0,0x0000,0x0004, 0x01, buf); 365 ARK3116_RCV(serial, 122, 0xFE, 0xC0, 0x0000, 0x0004, 0x01, buf);
363 366
364 ARK3116_SND(serial,123,0xFE,0x40,0x0003,0x0004); 367 ARK3116_SND(serial, 123, 0xFE, 0x40, 0x0003, 0x0004);
365 368
366 /* returns different values (control lines ?!) */ 369 /* returns different values (control lines?!) */
367 ARK3116_RCV(serial,124,0xFE,0xC0,0x0000,0x0006, 0xFF, buf); 370 ARK3116_RCV(serial, 124, 0xFE, 0xC0, 0x0000, 0x0006, 0xFF, buf);
368 371
369 /* initialise termios: */ 372 /* initialise termios */
370 if (port->tty) 373 if (port->tty)
371 ark3116_set_termios(port, &tmp_termios); 374 ark3116_set_termios(port, &tmp_termios);
372 375
373 kfree(buf); 376 kfree(buf);
374 377
375 return result; 378 return result;
376
377} 379}
378 380
379static int ark3116_ioctl(struct usb_serial_port *port, struct file *file, 381static int ark3116_ioctl(struct usb_serial_port *port, struct file *file,
380 unsigned int cmd, unsigned long arg) 382 unsigned int cmd, unsigned long arg)
381{ 383{
382 dbg("ioctl not supported yet..."); 384 struct serial_struct serstruct;
385 void __user *user_arg = (void __user *)arg;
386
387 switch (cmd) {
388 case TIOCGSERIAL:
389 /* XXX: Some of these values are probably wrong. */
390 memset(&serstruct, 0, sizeof (serstruct));
391 serstruct.type = PORT_16654;
392 serstruct.line = port->serial->minor;
393 serstruct.port = port->number;
394 serstruct.custom_divisor = 0;
395 serstruct.baud_base = 460800;
396
397 if (copy_to_user(user_arg, &serstruct, sizeof (serstruct)))
398 return -EFAULT;
399
400 return 0;
401 case TIOCSSERIAL:
402 if (copy_from_user(&serstruct, user_arg, sizeof (serstruct)))
403 return -EFAULT;
404 return 0;
405 default:
406 dbg("%s cmd 0x%04x not supported", __FUNCTION__, cmd);
407 break;
408 }
409
383 return -ENOIOCTLCMD; 410 return -ENOIOCTLCMD;
384} 411}
385 412
@@ -389,7 +416,7 @@ static int ark3116_tiocmget(struct usb_serial_port *port, struct file *file)
389 char *buf; 416 char *buf;
390 char temp; 417 char temp;
391 418
392 /* seems like serial port status info (RTS, CTS,...) is stored 419 /* seems like serial port status info (RTS, CTS, ...) is stored
393 * in reg(?) 0x0006 420 * in reg(?) 0x0006
394 * pcb connection point 11 = GND -> sets bit4 of response 421 * pcb connection point 11 = GND -> sets bit4 of response
395 * pcb connection point 7 = GND -> sets bit6 of response 422 * pcb connection point 7 = GND -> sets bit6 of response
@@ -401,16 +428,16 @@ static int ark3116_tiocmget(struct usb_serial_port *port, struct file *file)
401 return -ENOMEM; 428 return -ENOMEM;
402 } 429 }
403 430
404 /* read register: */ 431 /* read register */
405 ARK3116_RCV_QUIET(serial,0xFE,0xC0,0x0000,0x0006,buf); 432 ARK3116_RCV_QUIET(serial, 0xFE, 0xC0, 0x0000, 0x0006, buf);
406 temp = buf[0]; 433 temp = buf[0];
407 kfree(buf); 434 kfree(buf);
408 435
409 /* i do not really know if bit4=CTS and bit6=DSR... was just a 436 /* i do not really know if bit4=CTS and bit6=DSR... just a
410 * quick guess !! 437 * quick guess!
411 */ 438 */
412 return (temp & (1<<4) ? TIOCM_CTS : 0) | 439 return (temp & (1<<4) ? TIOCM_CTS : 0)
413 (temp & (1<<6) ? TIOCM_DSR : 0); 440 | (temp & (1<<6) ? TIOCM_DSR : 0);
414} 441}
415 442
416static struct usb_driver ark3116_driver = { 443static struct usb_driver ark3116_driver = {
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index ee70fddcab60..e1173c1aee37 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -129,6 +129,9 @@ struct cypress_private {
129 int cmd_ctrl; /* always set this to 1 before issuing a command */ 129 int cmd_ctrl; /* always set this to 1 before issuing a command */
130 struct cypress_buf *buf; /* write buffer */ 130 struct cypress_buf *buf; /* write buffer */
131 int write_urb_in_use; /* write urb in use indicator */ 131 int write_urb_in_use; /* write urb in use indicator */
132 int write_urb_interval; /* interval to use for write urb */
133 int read_urb_interval; /* interval to use for read urb */
134 int comm_is_ok; /* true if communication is (still) ok */
132 int termios_initialized; 135 int termios_initialized;
133 __u8 line_control; /* holds dtr / rts value */ 136 __u8 line_control; /* holds dtr / rts value */
134 __u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */ 137 __u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */
@@ -168,6 +171,7 @@ static int cypress_tiocmset (struct usb_serial_port *port, struct file *file,
168static int cypress_chars_in_buffer (struct usb_serial_port *port); 171static int cypress_chars_in_buffer (struct usb_serial_port *port);
169static void cypress_throttle (struct usb_serial_port *port); 172static void cypress_throttle (struct usb_serial_port *port);
170static void cypress_unthrottle (struct usb_serial_port *port); 173static void cypress_unthrottle (struct usb_serial_port *port);
174static void cypress_set_dead (struct usb_serial_port *port);
171static void cypress_read_int_callback (struct urb *urb, struct pt_regs *regs); 175static void cypress_read_int_callback (struct urb *urb, struct pt_regs *regs);
172static void cypress_write_int_callback (struct urb *urb, struct pt_regs *regs); 176static void cypress_write_int_callback (struct urb *urb, struct pt_regs *regs);
173/* baud helper functions */ 177/* baud helper functions */
@@ -288,6 +292,9 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m
288 292
289 priv = usb_get_serial_port_data(port); 293 priv = usb_get_serial_port_data(port);
290 294
295 if (!priv->comm_is_ok)
296 return -ENODEV;
297
291 switch(cypress_request_type) { 298 switch(cypress_request_type) {
292 case CYPRESS_SET_CONFIG: 299 case CYPRESS_SET_CONFIG:
293 300
@@ -365,13 +372,12 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m
365 if (tries++ >= 3) 372 if (tries++ >= 3)
366 break; 373 break;
367 374
368 if (retval == EPIPE) 375 } while (retval != 8 && retval != -ENODEV);
369 usb_clear_halt(port->serial->dev, 0x00);
370 } while (retval != 8 && retval != ENODEV);
371 376
372 if (retval != 8) 377 if (retval != 8) {
373 err("%s - failed sending serial line settings - %d", __FUNCTION__, retval); 378 err("%s - failed sending serial line settings - %d", __FUNCTION__, retval);
374 else { 379 cypress_set_dead(port);
380 } else {
375 spin_lock_irqsave(&priv->lock, flags); 381 spin_lock_irqsave(&priv->lock, flags);
376 priv->baud_rate = new_baudrate; 382 priv->baud_rate = new_baudrate;
377 priv->cbr_mask = baud_mask; 383 priv->cbr_mask = baud_mask;
@@ -392,12 +398,11 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m
392 if (tries++ >= 3) 398 if (tries++ >= 3)
393 break; 399 break;
394 400
395 if (retval == EPIPE) 401 } while (retval != 5 && retval != -ENODEV);
396 usb_clear_halt(port->serial->dev, 0x00);
397 } while (retval != 5 && retval != ENODEV);
398 402
399 if (retval != 5) { 403 if (retval != 5) {
400 err("%s - failed to retrieve serial line settings - %d", __FUNCTION__, retval); 404 err("%s - failed to retrieve serial line settings - %d", __FUNCTION__, retval);
405 cypress_set_dead(port);
401 return retval; 406 return retval;
402 } else { 407 } else {
403 spin_lock_irqsave(&priv->lock, flags); 408 spin_lock_irqsave(&priv->lock, flags);
@@ -419,6 +424,24 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m
419} /* cypress_serial_control */ 424} /* cypress_serial_control */
420 425
421 426
427static void cypress_set_dead(struct usb_serial_port *port)
428{
429 struct cypress_private *priv = usb_get_serial_port_data(port);
430 unsigned long flags;
431
432 spin_lock_irqsave(&priv->lock, flags);
433 if (!priv->comm_is_ok) {
434 spin_unlock_irqrestore(&priv->lock, flags);
435 return;
436 }
437 priv->comm_is_ok = 0;
438 spin_unlock_irqrestore(&priv->lock, flags);
439
440 err("cypress_m8 suspending failing port %d - interval might be too short",
441 port->number);
442}
443
444
422/* given a baud mask, it will return integer baud on success */ 445/* given a baud mask, it will return integer baud on success */
423static int mask_to_rate (unsigned mask) 446static int mask_to_rate (unsigned mask)
424{ 447{
@@ -472,13 +495,15 @@ static unsigned rate_to_mask (int rate)
472static int generic_startup (struct usb_serial *serial) 495static int generic_startup (struct usb_serial *serial)
473{ 496{
474 struct cypress_private *priv; 497 struct cypress_private *priv;
498 struct usb_serial_port *port = serial->port[0];
475 499
476 dbg("%s - port %d", __FUNCTION__, serial->port[0]->number); 500 dbg("%s - port %d", __FUNCTION__, port->number);
477 501
478 priv = kzalloc(sizeof (struct cypress_private), GFP_KERNEL); 502 priv = kzalloc(sizeof (struct cypress_private), GFP_KERNEL);
479 if (!priv) 503 if (!priv)
480 return -ENOMEM; 504 return -ENOMEM;
481 505
506 priv->comm_is_ok = !0;
482 spin_lock_init(&priv->lock); 507 spin_lock_init(&priv->lock);
483 priv->buf = cypress_buf_alloc(CYPRESS_BUF_SIZE); 508 priv->buf = cypress_buf_alloc(CYPRESS_BUF_SIZE);
484 if (priv->buf == NULL) { 509 if (priv->buf == NULL) {
@@ -489,13 +514,24 @@ static int generic_startup (struct usb_serial *serial)
489 514
490 usb_reset_configuration (serial->dev); 515 usb_reset_configuration (serial->dev);
491 516
492 interval = 1;
493 priv->cmd_ctrl = 0; 517 priv->cmd_ctrl = 0;
494 priv->line_control = 0; 518 priv->line_control = 0;
495 priv->termios_initialized = 0; 519 priv->termios_initialized = 0;
496 priv->rx_flags = 0; 520 priv->rx_flags = 0;
497 priv->cbr_mask = B300; 521 priv->cbr_mask = B300;
498 usb_set_serial_port_data(serial->port[0], priv); 522 if (interval > 0) {
523 priv->write_urb_interval = interval;
524 priv->read_urb_interval = interval;
525 dbg("%s - port %d read & write intervals forced to %d",
526 __FUNCTION__,port->number,interval);
527 } else {
528 priv->write_urb_interval = port->interrupt_out_urb->interval;
529 priv->read_urb_interval = port->interrupt_in_urb->interval;
530 dbg("%s - port %d intervals: read=%d write=%d",
531 __FUNCTION__,port->number,
532 priv->read_urb_interval,priv->write_urb_interval);
533 }
534 usb_set_serial_port_data(port, priv);
499 535
500 return 0; 536 return 0;
501} 537}
@@ -585,6 +621,9 @@ static int cypress_open (struct usb_serial_port *port, struct file *filp)
585 621
586 dbg("%s - port %d", __FUNCTION__, port->number); 622 dbg("%s - port %d", __FUNCTION__, port->number);
587 623
624 if (!priv->comm_is_ok)
625 return -EIO;
626
588 /* clear halts before open */ 627 /* clear halts before open */
589 usb_clear_halt(serial->dev, 0x81); 628 usb_clear_halt(serial->dev, 0x81);
590 usb_clear_halt(serial->dev, 0x02); 629 usb_clear_halt(serial->dev, 0x02);
@@ -624,11 +663,12 @@ static int cypress_open (struct usb_serial_port *port, struct file *filp)
624 usb_fill_int_urb(port->interrupt_in_urb, serial->dev, 663 usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
625 usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress), 664 usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress),
626 port->interrupt_in_urb->transfer_buffer, port->interrupt_in_urb->transfer_buffer_length, 665 port->interrupt_in_urb->transfer_buffer, port->interrupt_in_urb->transfer_buffer_length,
627 cypress_read_int_callback, port, interval); 666 cypress_read_int_callback, port, priv->read_urb_interval);
628 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 667 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
629 668
630 if (result){ 669 if (result){
631 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); 670 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
671 cypress_set_dead(port);
632 } 672 }
633 673
634 return result; 674 return result;
@@ -733,6 +773,9 @@ static void cypress_send(struct usb_serial_port *port)
733 struct cypress_private *priv = usb_get_serial_port_data(port); 773 struct cypress_private *priv = usb_get_serial_port_data(port);
734 unsigned long flags; 774 unsigned long flags;
735 775
776 if (!priv->comm_is_ok)
777 return;
778
736 dbg("%s - port %d", __FUNCTION__, port->number); 779 dbg("%s - port %d", __FUNCTION__, port->number);
737 dbg("%s - interrupt out size is %d", __FUNCTION__, port->interrupt_out_size); 780 dbg("%s - interrupt out size is %d", __FUNCTION__, port->interrupt_out_size);
738 781
@@ -806,14 +849,16 @@ send:
806 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, port->interrupt_out_size, 849 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, port->interrupt_out_size,
807 port->interrupt_out_urb->transfer_buffer); 850 port->interrupt_out_urb->transfer_buffer);
808 851
809 port->interrupt_out_urb->transfer_buffer_length = actual_size; 852 usb_fill_int_urb(port->interrupt_out_urb, port->serial->dev,
810 port->interrupt_out_urb->dev = port->serial->dev; 853 usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress),
811 port->interrupt_out_urb->interval = interval; 854 port->interrupt_out_buffer, port->interrupt_out_size,
855 cypress_write_int_callback, port, priv->write_urb_interval);
812 result = usb_submit_urb (port->interrupt_out_urb, GFP_ATOMIC); 856 result = usb_submit_urb (port->interrupt_out_urb, GFP_ATOMIC);
813 if (result) { 857 if (result) {
814 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, 858 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__,
815 result); 859 result);
816 priv->write_urb_in_use = 0; 860 priv->write_urb_in_use = 0;
861 cypress_set_dead(port);
817 } 862 }
818 863
819 spin_lock_irqsave(&priv->lock, flags); 864 spin_lock_irqsave(&priv->lock, flags);
@@ -1214,13 +1259,18 @@ static void cypress_unthrottle (struct usb_serial_port *port)
1214 priv->rx_flags = 0; 1259 priv->rx_flags = 0;
1215 spin_unlock_irqrestore(&priv->lock, flags); 1260 spin_unlock_irqrestore(&priv->lock, flags);
1216 1261
1262 if (!priv->comm_is_ok)
1263 return;
1264
1217 if (actually_throttled) { 1265 if (actually_throttled) {
1218 port->interrupt_in_urb->dev = port->serial->dev; 1266 port->interrupt_in_urb->dev = port->serial->dev;
1219 1267
1220 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); 1268 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
1221 if (result) 1269 if (result) {
1222 dev_err(&port->dev, "%s - failed submitting read urb, " 1270 dev_err(&port->dev, "%s - failed submitting read urb, "
1223 "error %d\n", __FUNCTION__, result); 1271 "error %d\n", __FUNCTION__, result);
1272 cypress_set_dead(port);
1273 }
1224 } 1274 }
1225} 1275}
1226 1276
@@ -1240,9 +1290,22 @@ static void cypress_read_int_callback(struct urb *urb, struct pt_regs *regs)
1240 1290
1241 dbg("%s - port %d", __FUNCTION__, port->number); 1291 dbg("%s - port %d", __FUNCTION__, port->number);
1242 1292
1243 if (urb->status) { 1293 switch (urb->status) {
1244 dbg("%s - nonzero read status received: %d", __FUNCTION__, 1294 case 0: /* success */
1245 urb->status); 1295 break;
1296 case -ECONNRESET:
1297 case -ENOENT:
1298 case -ESHUTDOWN:
1299 /* precursor to disconnect so just go away */
1300 return;
1301 case -EPIPE:
1302 usb_clear_halt(port->serial->dev,0x81);
1303 break;
1304 default:
1305 /* something ugly is going on... */
1306 dev_err(&urb->dev->dev,"%s - unexpected nonzero read status received: %d\n",
1307 __FUNCTION__,urb->status);
1308 cypress_set_dead(port);
1246 return; 1309 return;
1247 } 1310 }
1248 1311
@@ -1343,18 +1406,20 @@ continue_read:
1343 1406
1344 /* Continue trying to always read... unless the port has closed. */ 1407 /* Continue trying to always read... unless the port has closed. */
1345 1408
1346 if (port->open_count > 0) { 1409 if (port->open_count > 0 && priv->comm_is_ok) {
1347 usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev, 1410 usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev,
1348 usb_rcvintpipe(port->serial->dev, 1411 usb_rcvintpipe(port->serial->dev,
1349 port->interrupt_in_endpointAddress), 1412 port->interrupt_in_endpointAddress),
1350 port->interrupt_in_urb->transfer_buffer, 1413 port->interrupt_in_urb->transfer_buffer,
1351 port->interrupt_in_urb->transfer_buffer_length, 1414 port->interrupt_in_urb->transfer_buffer_length,
1352 cypress_read_int_callback, port, interval); 1415 cypress_read_int_callback, port, priv->read_urb_interval);
1353 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); 1416 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
1354 if (result) 1417 if (result) {
1355 dev_err(&urb->dev->dev, "%s - failed resubmitting " 1418 dev_err(&urb->dev->dev, "%s - failed resubmitting "
1356 "read urb, error %d\n", __FUNCTION__, 1419 "read urb, error %d\n", __FUNCTION__,
1357 result); 1420 result);
1421 cypress_set_dead(port);
1422 }
1358 } 1423 }
1359 1424
1360 return; 1425 return;
@@ -1380,20 +1445,26 @@ static void cypress_write_int_callback(struct urb *urb, struct pt_regs *regs)
1380 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); 1445 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1381 priv->write_urb_in_use = 0; 1446 priv->write_urb_in_use = 0;
1382 return; 1447 return;
1383 case -EPIPE: /* no break needed */ 1448 case -EPIPE: /* no break needed; clear halt and resubmit */
1449 if (!priv->comm_is_ok)
1450 break;
1384 usb_clear_halt(port->serial->dev, 0x02); 1451 usb_clear_halt(port->serial->dev, 0x02);
1385 default:
1386 /* error in the urb, so we have to resubmit it */ 1452 /* error in the urb, so we have to resubmit it */
1387 dbg("%s - Overflow in write", __FUNCTION__);
1388 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); 1453 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
1389 port->interrupt_out_urb->transfer_buffer_length = 1; 1454 port->interrupt_out_urb->transfer_buffer_length = 1;
1390 port->interrupt_out_urb->dev = port->serial->dev; 1455 port->interrupt_out_urb->dev = port->serial->dev;
1391 result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); 1456 result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC);
1392 if (result) 1457 if (!result)
1393 dev_err(&urb->dev->dev, "%s - failed resubmitting write urb, error %d\n",
1394 __FUNCTION__, result);
1395 else
1396 return; 1458 return;
1459 dev_err(&urb->dev->dev, "%s - failed resubmitting write urb, error %d\n",
1460 __FUNCTION__, result);
1461 cypress_set_dead(port);
1462 break;
1463 default:
1464 dev_err(&urb->dev->dev,"%s - unexpected nonzero write status received: %d\n",
1465 __FUNCTION__,urb->status);
1466 cypress_set_dead(port);
1467 break;
1397 } 1468 }
1398 1469
1399 priv->write_urb_in_use = 0; 1470 priv->write_urb_in_use = 0;
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index c6115aa1b445..1f7b72553f37 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1101,25 +1101,29 @@ static ssize_t store_event_char(struct device *dev, struct device_attribute *att
1101static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer); 1101static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer);
1102static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); 1102static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
1103 1103
1104static void create_sysfs_attrs(struct usb_serial *serial) 1104static int create_sysfs_attrs(struct usb_serial *serial)
1105{ 1105{
1106 struct ftdi_private *priv; 1106 struct ftdi_private *priv;
1107 struct usb_device *udev; 1107 struct usb_device *udev;
1108 int retval = 0;
1108 1109
1109 dbg("%s",__FUNCTION__); 1110 dbg("%s",__FUNCTION__);
1110 1111
1111 priv = usb_get_serial_port_data(serial->port[0]); 1112 priv = usb_get_serial_port_data(serial->port[0]);
1112 udev = serial->dev; 1113 udev = serial->dev;
1113 1114
1114 /* XXX I've no idea if the original SIO supports the event_char 1115 /* XXX I've no idea if the original SIO supports the event_char
1115 * sysfs parameter, so I'm playing it safe. */ 1116 * sysfs parameter, so I'm playing it safe. */
1116 if (priv->chip_type != SIO) { 1117 if (priv->chip_type != SIO) {
1117 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]); 1118 dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
1118 device_create_file(&udev->dev, &dev_attr_event_char); 1119 retval = device_create_file(&udev->dev, &dev_attr_event_char);
1119 if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) { 1120 if ((!retval) &&
1120 device_create_file(&udev->dev, &dev_attr_latency_timer); 1121 (priv->chip_type == FT232BM || priv->chip_type == FT2232C)) {
1122 retval = device_create_file(&udev->dev,
1123 &dev_attr_latency_timer);
1121 } 1124 }
1122 } 1125 }
1126 return retval;
1123} 1127}
1124 1128
1125static void remove_sysfs_attrs(struct usb_serial *serial) 1129static void remove_sysfs_attrs(struct usb_serial *serial)
@@ -1162,7 +1166,8 @@ static int ftdi_sio_attach (struct usb_serial *serial)
1162 struct usb_serial_port *port = serial->port[0]; 1166 struct usb_serial_port *port = serial->port[0];
1163 struct ftdi_private *priv; 1167 struct ftdi_private *priv;
1164 struct ftdi_sio_quirk *quirk; 1168 struct ftdi_sio_quirk *quirk;
1165 1169 int retval;
1170
1166 dbg("%s",__FUNCTION__); 1171 dbg("%s",__FUNCTION__);
1167 1172
1168 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL); 1173 priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL);
@@ -1203,15 +1208,18 @@ static int ftdi_sio_attach (struct usb_serial *serial)
1203 usb_set_serial_port_data(serial->port[0], priv); 1208 usb_set_serial_port_data(serial->port[0], priv);
1204 1209
1205 ftdi_determine_type (serial->port[0]); 1210 ftdi_determine_type (serial->port[0]);
1206 create_sysfs_attrs(serial); 1211 retval = create_sysfs_attrs(serial);
1212 if (retval)
1213 dev_err(&serial->dev->dev, "Error creating sysfs files, "
1214 "continuing\n");
1207 1215
1208 /* Check for device requiring special set up. */ 1216 /* Check for device requiring special set up. */
1209 quirk = (struct ftdi_sio_quirk *)usb_get_serial_data(serial); 1217 quirk = (struct ftdi_sio_quirk *)usb_get_serial_data(serial);
1210 if (quirk && quirk->setup) { 1218 if (quirk && quirk->setup) {
1211 quirk->setup(serial); 1219 quirk->setup(serial);
1212 } 1220 }
1213 1221
1214 return (0); 1222 return 0;
1215} /* ftdi_sio_attach */ 1223} /* ftdi_sio_attach */
1216 1224
1217 1225
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 727852634be9..4b1196a8b09e 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * Garmin GPS driver 2 * Garmin GPS driver
3 * 3 *
4 * Copyright (C) 2004 Hermann Kneissel herkne@users.sourceforge.net 4 * Copyright (C) 2006 Hermann Kneissel herkne@users.sourceforge.net
5 * 5 *
6 * The latest version of the driver can be found at 6 * The latest version of the driver can be found at
7 * http://sourceforge.net/projects/garmin-gps/ 7 * http://sourceforge.net/projects/garmin-gps/
@@ -37,6 +37,8 @@
37#include <linux/usb.h> 37#include <linux/usb.h>
38#include <linux/usb/serial.h> 38#include <linux/usb/serial.h>
39 39
40#include <linux/version.h>
41
40/* the mode to be set when the port ist opened */ 42/* the mode to be set when the port ist opened */
41static int initial_mode = 1; 43static int initial_mode = 1;
42 44
@@ -50,7 +52,7 @@ static int debug = 0;
50 */ 52 */
51 53
52#define VERSION_MAJOR 0 54#define VERSION_MAJOR 0
53#define VERSION_MINOR 23 55#define VERSION_MINOR 28
54 56
55#define _STR(s) #s 57#define _STR(s) #s
56#define _DRIVER_VERSION(a,b) "v" _STR(a) "." _STR(b) 58#define _DRIVER_VERSION(a,b) "v" _STR(a) "." _STR(b)
@@ -164,7 +166,8 @@ struct garmin_data {
164#define FLAGS_SESSION_REPLY1_SEEN 0x0080 166#define FLAGS_SESSION_REPLY1_SEEN 0x0080
165#define FLAGS_SESSION_REPLY2_SEEN 0x0040 167#define FLAGS_SESSION_REPLY2_SEEN 0x0040
166#define FLAGS_BULK_IN_ACTIVE 0x0020 168#define FLAGS_BULK_IN_ACTIVE 0x0020
167#define FLAGS_THROTTLED 0x0010 169#define FLAGS_BULK_IN_RESTART 0x0010
170#define FLAGS_THROTTLED 0x0008
168#define CLEAR_HALT_REQUIRED 0x0001 171#define CLEAR_HALT_REQUIRED 0x0001
169 172
170#define FLAGS_QUEUING 0x0100 173#define FLAGS_QUEUING 0x0100
@@ -224,7 +227,7 @@ static struct usb_driver garmin_driver = {
224 .probe = usb_serial_probe, 227 .probe = usb_serial_probe,
225 .disconnect = usb_serial_disconnect, 228 .disconnect = usb_serial_disconnect,
226 .id_table = id_table, 229 .id_table = id_table,
227 .no_dynamic_id = 1, 230 .no_dynamic_id = 1,
228}; 231};
229 232
230 233
@@ -270,7 +273,7 @@ static inline int isAbortTrfCmnd(const unsigned char *buf)
270 273
271 274
272static void send_to_tty(struct usb_serial_port *port, 275static void send_to_tty(struct usb_serial_port *port,
273 char *data, unsigned int actual_length) 276 char *data, unsigned int actual_length)
274{ 277{
275 struct tty_struct *tty = port->tty; 278 struct tty_struct *tty = port->tty;
276 279
@@ -294,15 +297,15 @@ static void send_to_tty(struct usb_serial_port *port,
294 * queue a received (usb-)packet for later processing 297 * queue a received (usb-)packet for later processing
295 */ 298 */
296static int pkt_add(struct garmin_data * garmin_data_p, 299static int pkt_add(struct garmin_data * garmin_data_p,
297 unsigned char *data, unsigned int data_length) 300 unsigned char *data, unsigned int data_length)
298{ 301{
302 int state = 0;
299 int result = 0; 303 int result = 0;
300 unsigned long flags; 304 unsigned long flags;
301 struct garmin_packet *pkt; 305 struct garmin_packet *pkt;
302 306
303 /* process only packets containg data ... */ 307 /* process only packets containg data ... */
304 if (data_length) { 308 if (data_length) {
305 garmin_data_p->flags |= FLAGS_QUEUING;
306 pkt = kmalloc(sizeof(struct garmin_packet)+data_length, 309 pkt = kmalloc(sizeof(struct garmin_packet)+data_length,
307 GFP_ATOMIC); 310 GFP_ATOMIC);
308 if (pkt == NULL) { 311 if (pkt == NULL) {
@@ -313,14 +316,16 @@ static int pkt_add(struct garmin_data * garmin_data_p,
313 memcpy(pkt->data, data, data_length); 316 memcpy(pkt->data, data, data_length);
314 317
315 spin_lock_irqsave(&garmin_data_p->lock, flags); 318 spin_lock_irqsave(&garmin_data_p->lock, flags);
319 garmin_data_p->flags |= FLAGS_QUEUING;
316 result = list_empty(&garmin_data_p->pktlist); 320 result = list_empty(&garmin_data_p->pktlist);
317 pkt->seq = garmin_data_p->seq_counter++; 321 pkt->seq = garmin_data_p->seq_counter++;
318 list_add_tail(&pkt->list, &garmin_data_p->pktlist); 322 list_add_tail(&pkt->list, &garmin_data_p->pktlist);
323 state = garmin_data_p->state;
319 spin_unlock_irqrestore(&garmin_data_p->lock, flags); 324 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
320 325
321 /* in serial mode, if someone is waiting for data from 326 /* in serial mode, if someone is waiting for data from
322 the device, iconvert and send the next packet to tty. */ 327 the device, iconvert and send the next packet to tty. */
323 if (result && (garmin_data_p->state == STATE_GSP_WAIT_DATA)) { 328 if (result && (state == STATE_GSP_WAIT_DATA)) {
324 gsp_next_packet(garmin_data_p); 329 gsp_next_packet(garmin_data_p);
325 } 330 }
326 } 331 }
@@ -370,9 +375,9 @@ static void pkt_clear(struct garmin_data * garmin_data_p)
370static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id) 375static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id)
371{ 376{
372 __u8 pkt[10]; 377 __u8 pkt[10];
373 __u8 cksum = 0; 378 __u8 cksum = 0;
374 __u8 *ptr = pkt; 379 __u8 *ptr = pkt;
375 unsigned l = 0; 380 unsigned l = 0;
376 381
377 dbg("%s - pkt-id: 0x%X.", __FUNCTION__, 0xFF & pkt_id); 382 dbg("%s - pkt-id: 0x%X.", __FUNCTION__, 0xFF & pkt_id);
378 383
@@ -416,7 +421,7 @@ static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id)
416static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count) 421static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
417{ 422{
418 const __u8* recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET; 423 const __u8* recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET;
419 __le32 *usbdata = (__le32 *) garmin_data_p->inbuffer; 424 __le32 *usbdata = (__le32 *) garmin_data_p->inbuffer;
420 425
421 int cksum = 0; 426 int cksum = 0;
422 int n = 0; 427 int n = 0;
@@ -447,11 +452,11 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
447 n++; 452 n++;
448 } 453 }
449 454
450 if ((0xff & (cksum + *recpkt)) != 0) { 455 if ((0xff & (cksum + *recpkt)) != 0) {
451 dbg("%s - invalid checksum, expected %02x, got %02x", 456 dbg("%s - invalid checksum, expected %02x, got %02x",
452 __FUNCTION__, 0xff & -cksum, 0xff & *recpkt); 457 __FUNCTION__, 0xff & -cksum, 0xff & *recpkt);
453 return -EINVPKT; 458 return -EINVPKT;
454 } 459 }
455 460
456 usbdata[0] = __cpu_to_le32(GARMIN_LAYERID_APPL); 461 usbdata[0] = __cpu_to_le32(GARMIN_LAYERID_APPL);
457 usbdata[1] = __cpu_to_le32(pktid); 462 usbdata[1] = __cpu_to_le32(pktid);
@@ -491,20 +496,28 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count)
491 */ 496 */
492 497
493static int gsp_receive(struct garmin_data * garmin_data_p, 498static int gsp_receive(struct garmin_data * garmin_data_p,
494 const unsigned char *buf, int count) 499 const unsigned char *buf, int count)
495{ 500{
501 unsigned long flags;
496 int offs = 0; 502 int offs = 0;
497 int ack_or_nak_seen = 0; 503 int ack_or_nak_seen = 0;
498 int i = 0; 504 int i = 0;
499 __u8 *dest = garmin_data_p->inbuffer; 505 __u8 *dest;
500 int size = garmin_data_p->insize; 506 int size;
501 // dleSeen: set if last byte read was a DLE 507 // dleSeen: set if last byte read was a DLE
502 int dleSeen = garmin_data_p->flags & FLAGS_GSP_DLESEEN; 508 int dleSeen;
503 // skip: if set, skip incoming data until possible start of 509 // skip: if set, skip incoming data until possible start of
504 // new packet 510 // new packet
505 int skip = garmin_data_p->flags & FLAGS_GSP_SKIP; 511 int skip;
506 __u8 data; 512 __u8 data;
507 513
514 spin_lock_irqsave(&garmin_data_p->lock, flags);
515 dest = garmin_data_p->inbuffer;
516 size = garmin_data_p->insize;
517 dleSeen = garmin_data_p->flags & FLAGS_GSP_DLESEEN;
518 skip = garmin_data_p->flags & FLAGS_GSP_SKIP;
519 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
520
508 dbg("%s - dle=%d skip=%d size=%d count=%d", 521 dbg("%s - dle=%d skip=%d size=%d count=%d",
509 __FUNCTION__, dleSeen, skip, size, count); 522 __FUNCTION__, dleSeen, skip, size, count);
510 523
@@ -572,6 +585,8 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
572 } 585 }
573 } 586 }
574 587
588 spin_lock_irqsave(&garmin_data_p->lock, flags);
589
575 garmin_data_p->insize = size; 590 garmin_data_p->insize = size;
576 591
577 // copy flags back to structure 592 // copy flags back to structure
@@ -587,6 +602,11 @@ static int gsp_receive(struct garmin_data * garmin_data_p,
587 602
588 if (ack_or_nak_seen) { 603 if (ack_or_nak_seen) {
589 garmin_data_p->state = STATE_GSP_WAIT_DATA; 604 garmin_data_p->state = STATE_GSP_WAIT_DATA;
605 }
606
607 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
608
609 if (ack_or_nak_seen) {
590 gsp_next_packet(garmin_data_p); 610 gsp_next_packet(garmin_data_p);
591 } 611 }
592 612
@@ -676,7 +696,7 @@ static int gsp_send(struct garmin_data * garmin_data_p,
676 src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; 696 src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH;
677 if (k > (GARMIN_PKTHDR_LENGTH-2)) { 697 if (k > (GARMIN_PKTHDR_LENGTH-2)) {
678 /* can't add stuffing DLEs in place, move data to end 698 /* can't add stuffing DLEs in place, move data to end
679 of buffer ... */ 699 of buffer ... */
680 dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen; 700 dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen;
681 memcpy(dst, src, datalen); 701 memcpy(dst, src, datalen);
682 src = dst; 702 src = dst;
@@ -755,8 +775,9 @@ static void gsp_next_packet(struct garmin_data * garmin_data_p)
755 * or even incomplete packets 775 * or even incomplete packets
756 */ 776 */
757static int nat_receive(struct garmin_data * garmin_data_p, 777static int nat_receive(struct garmin_data * garmin_data_p,
758 const unsigned char *buf, int count) 778 const unsigned char *buf, int count)
759{ 779{
780 unsigned long flags;
760 __u8 * dest; 781 __u8 * dest;
761 int offs = 0; 782 int offs = 0;
762 int result = count; 783 int result = count;
@@ -803,7 +824,9 @@ static int nat_receive(struct garmin_data * garmin_data_p,
803 /* if this was an abort-transfer command, 824 /* if this was an abort-transfer command,
804 flush all queued data. */ 825 flush all queued data. */
805 if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { 826 if (isAbortTrfCmnd(garmin_data_p->inbuffer)) {
827 spin_lock_irqsave(&garmin_data_p->lock, flags);
806 garmin_data_p->flags |= FLAGS_DROP_DATA; 828 garmin_data_p->flags |= FLAGS_DROP_DATA;
829 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
807 pkt_clear(garmin_data_p); 830 pkt_clear(garmin_data_p);
808 } 831 }
809 } 832 }
@@ -839,12 +862,15 @@ static void priv_status_resp(struct usb_serial_port *port)
839 862
840static int process_resetdev_request(struct usb_serial_port *port) 863static int process_resetdev_request(struct usb_serial_port *port)
841{ 864{
865 unsigned long flags;
842 int status; 866 int status;
843 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 867 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
844 868
869 spin_lock_irqsave(&garmin_data_p->lock, flags);
845 garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED); 870 garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED);
846 garmin_data_p->state = STATE_RESET; 871 garmin_data_p->state = STATE_RESET;
847 garmin_data_p->serial_num = 0; 872 garmin_data_p->serial_num = 0;
873 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
848 874
849 usb_kill_urb (port->interrupt_in_urb); 875 usb_kill_urb (port->interrupt_in_urb);
850 dbg("%s - usb_reset_device", __FUNCTION__ ); 876 dbg("%s - usb_reset_device", __FUNCTION__ );
@@ -862,6 +888,7 @@ static int process_resetdev_request(struct usb_serial_port *port)
862 */ 888 */
863static int garmin_clear(struct garmin_data * garmin_data_p) 889static int garmin_clear(struct garmin_data * garmin_data_p)
864{ 890{
891 unsigned long flags;
865 int status = 0; 892 int status = 0;
866 893
867 struct usb_serial_port *port = garmin_data_p->port; 894 struct usb_serial_port *port = garmin_data_p->port;
@@ -875,8 +902,10 @@ static int garmin_clear(struct garmin_data * garmin_data_p)
875 /* flush all queued data */ 902 /* flush all queued data */
876 pkt_clear(garmin_data_p); 903 pkt_clear(garmin_data_p);
877 904
905 spin_lock_irqsave(&garmin_data_p->lock, flags);
878 garmin_data_p->insize = 0; 906 garmin_data_p->insize = 0;
879 garmin_data_p->outsize = 0; 907 garmin_data_p->outsize = 0;
908 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
880 909
881 return status; 910 return status;
882} 911}
@@ -888,6 +917,7 @@ static int garmin_clear(struct garmin_data * garmin_data_p)
888 917
889static int garmin_init_session(struct usb_serial_port *port) 918static int garmin_init_session(struct usb_serial_port *port)
890{ 919{
920 unsigned long flags;
891 struct usb_serial *serial = port->serial; 921 struct usb_serial *serial = port->serial;
892 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 922 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
893 int status = 0; 923 int status = 0;
@@ -913,7 +943,9 @@ static int garmin_init_session(struct usb_serial_port *port)
913 943
914 if (status >= 0) { 944 if (status >= 0) {
915 945
946 spin_lock_irqsave(&garmin_data_p->lock, flags);
916 garmin_data_p->ignorePkts++; 947 garmin_data_p->ignorePkts++;
948 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
917 949
918 /* not needed, but the win32 driver does it too ... */ 950 /* not needed, but the win32 driver does it too ... */
919 status = garmin_write_bulk(port, 951 status = garmin_write_bulk(port,
@@ -921,7 +953,9 @@ static int garmin_init_session(struct usb_serial_port *port)
921 sizeof(GARMIN_START_SESSION_REQ2)); 953 sizeof(GARMIN_START_SESSION_REQ2));
922 if (status >= 0) { 954 if (status >= 0) {
923 status = 0; 955 status = 0;
956 spin_lock_irqsave(&garmin_data_p->lock, flags);
924 garmin_data_p->ignorePkts++; 957 garmin_data_p->ignorePkts++;
958 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
925 } 959 }
926 } 960 }
927 } 961 }
@@ -935,6 +969,7 @@ static int garmin_init_session(struct usb_serial_port *port)
935 969
936static int garmin_open (struct usb_serial_port *port, struct file *filp) 970static int garmin_open (struct usb_serial_port *port, struct file *filp)
937{ 971{
972 unsigned long flags;
938 int status = 0; 973 int status = 0;
939 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 974 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
940 975
@@ -948,9 +983,11 @@ static int garmin_open (struct usb_serial_port *port, struct file *filp)
948 if (port->tty) 983 if (port->tty)
949 port->tty->low_latency = 1; 984 port->tty->low_latency = 1;
950 985
986 spin_lock_irqsave(&garmin_data_p->lock, flags);
951 garmin_data_p->mode = initial_mode; 987 garmin_data_p->mode = initial_mode;
952 garmin_data_p->count = 0; 988 garmin_data_p->count = 0;
953 garmin_data_p->flags = 0; 989 garmin_data_p->flags = 0;
990 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
954 991
955 /* shutdown any bulk reads that might be going on */ 992 /* shutdown any bulk reads that might be going on */
956 usb_kill_urb (port->write_urb); 993 usb_kill_urb (port->write_urb);
@@ -996,6 +1033,7 @@ static void garmin_close (struct usb_serial_port *port, struct file * filp)
996 1033
997static void garmin_write_bulk_callback (struct urb *urb, struct pt_regs *regs) 1034static void garmin_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
998{ 1035{
1036 unsigned long flags;
999 struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 1037 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1000 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1038 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1001 1039
@@ -1007,7 +1045,9 @@ static void garmin_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
1007 if (urb->status) { 1045 if (urb->status) {
1008 dbg("%s - nonzero write bulk status received: %d", 1046 dbg("%s - nonzero write bulk status received: %d",
1009 __FUNCTION__, urb->status); 1047 __FUNCTION__, urb->status);
1048 spin_lock_irqsave(&garmin_data_p->lock, flags);
1010 garmin_data_p->flags |= CLEAR_HALT_REQUIRED; 1049 garmin_data_p->flags |= CLEAR_HALT_REQUIRED;
1050 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1011 } 1051 }
1012 1052
1013 usb_serial_port_softint(port); 1053 usb_serial_port_softint(port);
@@ -1015,8 +1055,9 @@ static void garmin_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
1015 1055
1016 1056
1017static int garmin_write_bulk (struct usb_serial_port *port, 1057static int garmin_write_bulk (struct usb_serial_port *port,
1018 const unsigned char *buf, int count) 1058 const unsigned char *buf, int count)
1019{ 1059{
1060 unsigned long flags;
1020 struct usb_serial *serial = port->serial; 1061 struct usb_serial *serial = port->serial;
1021 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1062 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1022 struct urb *urb; 1063 struct urb *urb;
@@ -1026,7 +1067,9 @@ static int garmin_write_bulk (struct usb_serial_port *port,
1026 dbg("%s - port %d, state %d", __FUNCTION__, port->number, 1067 dbg("%s - port %d, state %d", __FUNCTION__, port->number,
1027 garmin_data_p->state); 1068 garmin_data_p->state);
1028 1069
1070 spin_lock_irqsave(&garmin_data_p->lock, flags);
1029 garmin_data_p->flags &= ~FLAGS_DROP_DATA; 1071 garmin_data_p->flags &= ~FLAGS_DROP_DATA;
1072 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1030 1073
1031 buffer = kmalloc (count, GFP_ATOMIC); 1074 buffer = kmalloc (count, GFP_ATOMIC);
1032 if (!buffer) { 1075 if (!buffer) {
@@ -1053,7 +1096,9 @@ static int garmin_write_bulk (struct usb_serial_port *port,
1053 urb->transfer_flags |= URB_ZERO_PACKET; 1096 urb->transfer_flags |= URB_ZERO_PACKET;
1054 1097
1055 if (GARMIN_LAYERID_APPL == getLayerId(buffer)) { 1098 if (GARMIN_LAYERID_APPL == getLayerId(buffer)) {
1099 spin_lock_irqsave(&garmin_data_p->lock, flags);
1056 garmin_data_p->flags |= FLAGS_APP_REQ_SEEN; 1100 garmin_data_p->flags |= FLAGS_APP_REQ_SEEN;
1101 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1057 if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { 1102 if (garmin_data_p->mode == MODE_GARMIN_SERIAL) {
1058 pkt_clear(garmin_data_p); 1103 pkt_clear(garmin_data_p);
1059 garmin_data_p->state = STATE_GSP_WAIT_DATA; 1104 garmin_data_p->state = STATE_GSP_WAIT_DATA;
@@ -1087,8 +1132,9 @@ static int garmin_write_bulk (struct usb_serial_port *port,
1087 1132
1088 1133
1089static int garmin_write (struct usb_serial_port *port, 1134static int garmin_write (struct usb_serial_port *port,
1090 const unsigned char *buf, int count) 1135 const unsigned char *buf, int count)
1091{ 1136{
1137 unsigned long flags;
1092 int pktid, pktsiz, len; 1138 int pktid, pktsiz, len;
1093 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1139 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1094 __le32 *privpkt = (__le32 *)garmin_data_p->privpkt; 1140 __le32 *privpkt = (__le32 *)garmin_data_p->privpkt;
@@ -1139,7 +1185,9 @@ static int garmin_write (struct usb_serial_port *port,
1139 break; 1185 break;
1140 1186
1141 case PRIV_PKTID_RESET_REQ: 1187 case PRIV_PKTID_RESET_REQ:
1188 spin_lock_irqsave(&garmin_data_p->lock, flags);
1142 garmin_data_p->flags |= FLAGS_APP_REQ_SEEN; 1189 garmin_data_p->flags |= FLAGS_APP_REQ_SEEN;
1190 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1143 break; 1191 break;
1144 1192
1145 case PRIV_PKTID_SET_DEF_MODE: 1193 case PRIV_PKTID_SET_DEF_MODE:
@@ -1155,6 +1203,8 @@ static int garmin_write (struct usb_serial_port *port,
1155 } 1203 }
1156 } 1204 }
1157 1205
1206 garmin_data_p->ignorePkts = 0;
1207
1158 if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { 1208 if (garmin_data_p->mode == MODE_GARMIN_SERIAL) {
1159 return gsp_receive(garmin_data_p, buf, count); 1209 return gsp_receive(garmin_data_p, buf, count);
1160 } else { /* MODE_NATIVE */ 1210 } else { /* MODE_NATIVE */
@@ -1177,10 +1227,10 @@ static int garmin_chars_in_buffer (struct usb_serial_port *port)
1177{ 1227{
1178 /* 1228 /*
1179 * Report back the number of bytes currently in our input buffer. 1229 * Report back the number of bytes currently in our input buffer.
1180 * Will this lock up the driver - the buffer contains an incomplete 1230 * Will this lock up the driver - the buffer contains an incomplete
1181 * package which will not be written to the device until it 1231 * package which will not be written to the device until it
1182 * has been completed ? 1232 * has been completed ?
1183 */ 1233 */
1184 //struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1234 //struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1185 //return garmin_data_p->insize; 1235 //return garmin_data_p->insize;
1186 return 0; 1236 return 0;
@@ -1190,6 +1240,8 @@ static int garmin_chars_in_buffer (struct usb_serial_port *port)
1190static void garmin_read_process(struct garmin_data * garmin_data_p, 1240static void garmin_read_process(struct garmin_data * garmin_data_p,
1191 unsigned char *data, unsigned data_length) 1241 unsigned char *data, unsigned data_length)
1192{ 1242{
1243 unsigned long flags;
1244
1193 if (garmin_data_p->flags & FLAGS_DROP_DATA) { 1245 if (garmin_data_p->flags & FLAGS_DROP_DATA) {
1194 /* abort-transfer cmd is actice */ 1246 /* abort-transfer cmd is actice */
1195 dbg("%s - pkt dropped", __FUNCTION__); 1247 dbg("%s - pkt dropped", __FUNCTION__);
@@ -1200,11 +1252,14 @@ static void garmin_read_process(struct garmin_data * garmin_data_p,
1200 if a reset is required or not when closing 1252 if a reset is required or not when closing
1201 the device */ 1253 the device */
1202 if (0 == memcmp(data, GARMIN_APP_LAYER_REPLY, 1254 if (0 == memcmp(data, GARMIN_APP_LAYER_REPLY,
1203 sizeof(GARMIN_APP_LAYER_REPLY))) 1255 sizeof(GARMIN_APP_LAYER_REPLY))) {
1256 spin_lock_irqsave(&garmin_data_p->lock, flags);
1204 garmin_data_p->flags |= FLAGS_APP_RESP_SEEN; 1257 garmin_data_p->flags |= FLAGS_APP_RESP_SEEN;
1258 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1259 }
1205 1260
1206 /* if throttling is active or postprecessing is required 1261 /* if throttling is active or postprecessing is required
1207 put the received data in th input queue, otherwise 1262 put the received data in the input queue, otherwise
1208 send it directly to the tty port */ 1263 send it directly to the tty port */
1209 if (garmin_data_p->flags & FLAGS_QUEUING) { 1264 if (garmin_data_p->flags & FLAGS_QUEUING) {
1210 pkt_add(garmin_data_p, data, data_length); 1265 pkt_add(garmin_data_p, data, data_length);
@@ -1221,6 +1276,7 @@ static void garmin_read_process(struct garmin_data * garmin_data_p,
1221 1276
1222static void garmin_read_bulk_callback (struct urb *urb, struct pt_regs *regs) 1277static void garmin_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
1223{ 1278{
1279 unsigned long flags;
1224 struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 1280 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1225 struct usb_serial *serial = port->serial; 1281 struct usb_serial *serial = port->serial;
1226 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1282 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
@@ -1245,19 +1301,30 @@ static void garmin_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
1245 1301
1246 garmin_read_process(garmin_data_p, data, urb->actual_length); 1302 garmin_read_process(garmin_data_p, data, urb->actual_length);
1247 1303
1248 /* Continue trying to read until nothing more is received */ 1304 if (urb->actual_length == 0 &&
1249 if (urb->actual_length > 0) { 1305 0 != (garmin_data_p->flags & FLAGS_BULK_IN_RESTART)) {
1250 usb_fill_bulk_urb (port->read_urb, serial->dev, 1306 spin_lock_irqsave(&garmin_data_p->lock, flags);
1251 usb_rcvbulkpipe (serial->dev, 1307 garmin_data_p->flags &= ~FLAGS_BULK_IN_RESTART;
1252 port->bulk_in_endpointAddress), 1308 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1253 port->read_urb->transfer_buffer,
1254 port->read_urb->transfer_buffer_length,
1255 garmin_read_bulk_callback, port);
1256 status = usb_submit_urb(port->read_urb, GFP_ATOMIC); 1309 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
1257 if (status) 1310 if (status)
1258 dev_err(&port->dev, 1311 dev_err(&port->dev,
1259 "%s - failed resubmitting read urb, error %d\n", 1312 "%s - failed resubmitting read urb, error %d\n",
1260 __FUNCTION__, status); 1313 __FUNCTION__, status);
1314 } else if (urb->actual_length > 0) {
1315 /* Continue trying to read until nothing more is received */
1316 if (0 == (garmin_data_p->flags & FLAGS_THROTTLED)) {
1317 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
1318 if (status)
1319 dev_err(&port->dev,
1320 "%s - failed resubmitting read urb, error %d\n",
1321 __FUNCTION__, status);
1322 }
1323 } else {
1324 dbg("%s - end of bulk data", __FUNCTION__);
1325 spin_lock_irqsave(&garmin_data_p->lock, flags);
1326 garmin_data_p->flags &= ~FLAGS_BULK_IN_ACTIVE;
1327 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1261 } 1328 }
1262 return; 1329 return;
1263} 1330}
@@ -1265,6 +1332,7 @@ static void garmin_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
1265 1332
1266static void garmin_read_int_callback (struct urb *urb, struct pt_regs *regs) 1333static void garmin_read_int_callback (struct urb *urb, struct pt_regs *regs)
1267{ 1334{
1335 unsigned long flags;
1268 int status; 1336 int status;
1269 struct usb_serial_port *port = (struct usb_serial_port *)urb->context; 1337 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1270 struct usb_serial *serial = port->serial; 1338 struct usb_serial *serial = port->serial;
@@ -1297,25 +1365,41 @@ static void garmin_read_int_callback (struct urb *urb, struct pt_regs *regs)
1297 1365
1298 dbg("%s - bulk data available.", __FUNCTION__); 1366 dbg("%s - bulk data available.", __FUNCTION__);
1299 1367
1300 /* bulk data available */ 1368 if (0 == (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) {
1301 usb_fill_bulk_urb (port->read_urb, serial->dev, 1369
1302 usb_rcvbulkpipe (serial->dev, 1370 /* bulk data available */
1303 port->bulk_in_endpointAddress), 1371 usb_fill_bulk_urb (port->read_urb, serial->dev,
1304 port->read_urb->transfer_buffer, 1372 usb_rcvbulkpipe (serial->dev,
1305 port->read_urb->transfer_buffer_length, 1373 port->bulk_in_endpointAddress),
1306 garmin_read_bulk_callback, port); 1374 port->read_urb->transfer_buffer,
1307 status = usb_submit_urb(port->read_urb, GFP_KERNEL); 1375 port->read_urb->transfer_buffer_length,
1308 if (status) { 1376 garmin_read_bulk_callback, port);
1309 dev_err(&port->dev, 1377 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
1310 "%s - failed submitting read urb, error %d\n", 1378 if (status) {
1311 __FUNCTION__, status); 1379 dev_err(&port->dev,
1380 "%s - failed submitting read urb, error %d\n",
1381 __FUNCTION__, status);
1382 } else {
1383 spin_lock_irqsave(&garmin_data_p->lock, flags);
1384 garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE;
1385 /* do not send this packet to the user */
1386 garmin_data_p->ignorePkts = 1;
1387 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1388 }
1389 } else {
1390 /* bulk-in transfer still active */
1391 spin_lock_irqsave(&garmin_data_p->lock, flags);
1392 garmin_data_p->flags |= FLAGS_BULK_IN_RESTART;
1393 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1312 } 1394 }
1313 1395
1314 } else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY)) 1396 } else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY))
1315 && 0 == memcmp(data, GARMIN_START_SESSION_REPLY, 1397 && 0 == memcmp(data, GARMIN_START_SESSION_REPLY,
1316 sizeof(GARMIN_START_SESSION_REPLY))) { 1398 sizeof(GARMIN_START_SESSION_REPLY))) {
1317 1399
1400 spin_lock_irqsave(&garmin_data_p->lock, flags);
1318 garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN; 1401 garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN;
1402 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1319 1403
1320 /* save the serial number */ 1404 /* save the serial number */
1321 garmin_data_p->serial_num 1405 garmin_data_p->serial_num
@@ -1330,7 +1414,9 @@ static void garmin_read_int_callback (struct urb *urb, struct pt_regs *regs)
1330 ignore it. */ 1414 ignore it. */
1331 dbg("%s - pkt ignored (%d)", 1415 dbg("%s - pkt ignored (%d)",
1332 __FUNCTION__, garmin_data_p->ignorePkts); 1416 __FUNCTION__, garmin_data_p->ignorePkts);
1417 spin_lock_irqsave(&garmin_data_p->lock, flags);
1333 garmin_data_p->ignorePkts--; 1418 garmin_data_p->ignorePkts--;
1419 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1334 } else { 1420 } else {
1335 garmin_read_process(garmin_data_p, data, urb->actual_length); 1421 garmin_read_process(garmin_data_p, data, urb->actual_length);
1336 } 1422 }
@@ -1351,18 +1437,20 @@ static void garmin_read_int_callback (struct urb *urb, struct pt_regs *regs)
1351 */ 1437 */
1352static int garmin_flush_queue(struct garmin_data * garmin_data_p) 1438static int garmin_flush_queue(struct garmin_data * garmin_data_p)
1353{ 1439{
1440 unsigned long flags;
1354 struct garmin_packet *pkt; 1441 struct garmin_packet *pkt;
1355 1442
1356 if ((garmin_data_p->flags & FLAGS_THROTTLED) == 0) { 1443 if ((garmin_data_p->flags & FLAGS_THROTTLED) == 0) {
1357 pkt = pkt_pop(garmin_data_p); 1444 pkt = pkt_pop(garmin_data_p);
1358 if (pkt != NULL) { 1445 if (pkt != NULL) {
1359
1360 send_to_tty(garmin_data_p->port, pkt->data, pkt->size); 1446 send_to_tty(garmin_data_p->port, pkt->data, pkt->size);
1361 kfree(pkt); 1447 kfree(pkt);
1362 mod_timer(&garmin_data_p->timer, (1)+jiffies); 1448 mod_timer(&garmin_data_p->timer, (1)+jiffies);
1363 1449
1364 } else { 1450 } else {
1451 spin_lock_irqsave(&garmin_data_p->lock, flags);
1365 garmin_data_p->flags &= ~FLAGS_QUEUING; 1452 garmin_data_p->flags &= ~FLAGS_QUEUING;
1453 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1366 } 1454 }
1367 } 1455 }
1368 return 0; 1456 return 0;
@@ -1371,26 +1459,41 @@ static int garmin_flush_queue(struct garmin_data * garmin_data_p)
1371 1459
1372static void garmin_throttle (struct usb_serial_port *port) 1460static void garmin_throttle (struct usb_serial_port *port)
1373{ 1461{
1462 unsigned long flags;
1374 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1463 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1375 1464
1376 dbg("%s - port %d", __FUNCTION__, port->number); 1465 dbg("%s - port %d", __FUNCTION__, port->number);
1377 /* set flag, data received will be put into a queue 1466 /* set flag, data received will be put into a queue
1378 for later processing */ 1467 for later processing */
1468 spin_lock_irqsave(&garmin_data_p->lock, flags);
1379 garmin_data_p->flags |= FLAGS_QUEUING|FLAGS_THROTTLED; 1469 garmin_data_p->flags |= FLAGS_QUEUING|FLAGS_THROTTLED;
1470 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1380} 1471}
1381 1472
1382 1473
1383static void garmin_unthrottle (struct usb_serial_port *port) 1474static void garmin_unthrottle (struct usb_serial_port *port)
1384{ 1475{
1476 unsigned long flags;
1385 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); 1477 struct garmin_data * garmin_data_p = usb_get_serial_port_data(port);
1478 int status;
1386 1479
1387 dbg("%s - port %d", __FUNCTION__, port->number); 1480 dbg("%s - port %d", __FUNCTION__, port->number);
1481 spin_lock_irqsave(&garmin_data_p->lock, flags);
1388 garmin_data_p->flags &= ~FLAGS_THROTTLED; 1482 garmin_data_p->flags &= ~FLAGS_THROTTLED;
1483 spin_unlock_irqrestore(&garmin_data_p->lock, flags);
1389 1484
1390 /* in native mode send queued data to tty, in 1485 /* in native mode send queued data to tty, in
1391 serial mode nothing needs to be done here */ 1486 serial mode nothing needs to be done here */
1392 if (garmin_data_p->mode == MODE_NATIVE) 1487 if (garmin_data_p->mode == MODE_NATIVE)
1393 garmin_flush_queue(garmin_data_p); 1488 garmin_flush_queue(garmin_data_p);
1489
1490 if (0 != (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) {
1491 status = usb_submit_urb(port->read_urb, GFP_ATOMIC);
1492 if (status)
1493 dev_err(&port->dev,
1494 "%s - failed resubmitting read urb, error %d\n",
1495 __FUNCTION__, status);
1496 }
1394} 1497}
1395 1498
1396 1499
@@ -1420,11 +1523,12 @@ static int garmin_attach (struct usb_serial *serial)
1420 1523
1421 dbg("%s", __FUNCTION__); 1524 dbg("%s", __FUNCTION__);
1422 1525
1423 garmin_data_p = kzalloc(sizeof(struct garmin_data), GFP_KERNEL); 1526 garmin_data_p = kmalloc (sizeof(struct garmin_data), GFP_KERNEL);
1424 if (garmin_data_p == NULL) { 1527 if (garmin_data_p == NULL) {
1425 dev_err(&port->dev, "%s - Out of memory\n", __FUNCTION__); 1528 dev_err(&port->dev, "%s - Out of memory\n", __FUNCTION__);
1426 return -ENOMEM; 1529 return -ENOMEM;
1427 } 1530 }
1531 memset (garmin_data_p, 0, sizeof(struct garmin_data));
1428 init_timer(&garmin_data_p->timer); 1532 init_timer(&garmin_data_p->timer);
1429 spin_lock_init(&garmin_data_p->lock); 1533 spin_lock_init(&garmin_data_p->lock);
1430 INIT_LIST_HEAD(&garmin_data_p->pktlist); 1534 INIT_LIST_HEAD(&garmin_data_p->pktlist);
@@ -1459,10 +1563,10 @@ static void garmin_shutdown (struct usb_serial *serial)
1459/* All of the device info needed */ 1563/* All of the device info needed */
1460static struct usb_serial_driver garmin_device = { 1564static struct usb_serial_driver garmin_device = {
1461 .driver = { 1565 .driver = {
1462 .owner = THIS_MODULE, 1566 .owner = THIS_MODULE,
1463 .name = "garmin_gps", 1567 .name = "garmin_gps",
1464 }, 1568 },
1465 .description = "Garmin GPS usb/tty", 1569 .description = "Garmin GPS usb/tty",
1466 .id_table = id_table, 1570 .id_table = id_table,
1467 .num_interrupt_in = 1, 1571 .num_interrupt_in = 1,
1468 .num_bulk_in = 1, 1572 .num_bulk_in = 1,
@@ -1483,6 +1587,7 @@ static struct usb_serial_driver garmin_device = {
1483}; 1587};
1484 1588
1485 1589
1590
1486static int __init garmin_init (void) 1591static int __init garmin_init (void)
1487{ 1592{
1488 int retval; 1593 int retval;
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index 9840bade79f9..bfc6998cd16f 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -652,11 +652,6 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp)
652 port->bulk_out_size = port->write_urb->transfer_buffer_length = URBDATA_SIZE; 652 port->bulk_out_size = port->write_urb->transfer_buffer_length = URBDATA_SIZE;
653 653
654 msleep(1000*initial_wait); 654 msleep(1000*initial_wait);
655 /* Start reading from the device */
656 usb_fill_bulk_urb(port->read_urb, serial->dev,
657 usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
658 port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
659 ipaq_read_bulk_callback, port);
660 655
661 /* 656 /*
662 * Send out control message observed in win98 sniffs. Not sure what 657 * Send out control message observed in win98 sniffs. Not sure what
@@ -670,18 +665,31 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp)
670 result = usb_control_msg(serial->dev, 665 result = usb_control_msg(serial->dev,
671 usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21, 666 usb_sndctrlpipe(serial->dev, 0), 0x22, 0x21,
672 0x1, 0, NULL, 0, 100); 667 0x1, 0, NULL, 0, 100);
673 if (result == 0) { 668 if (!result)
674 result = usb_submit_urb(port->read_urb, GFP_KERNEL); 669 break;
675 if (result) { 670
676 err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
677 goto error;
678 }
679 return 0;
680 }
681 msleep(1000); 671 msleep(1000);
682 } 672 }
683 err("%s - failed doing control urb, error %d", __FUNCTION__, result); 673
684 goto error; 674 if (!retries && result) {
675 err("%s - failed doing control urb, error %d", __FUNCTION__,
676 result);
677 goto error;
678 }
679
680 /* Start reading from the device */
681 usb_fill_bulk_urb(port->read_urb, serial->dev,
682 usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
683 port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
684 ipaq_read_bulk_callback, port);
685
686 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
687 if (result) {
688 err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
689 goto error;
690 }
691
692 return 0;
685 693
686enomem: 694enomem:
687 result = -ENOMEM; 695 result = -ENOMEM;
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
new file mode 100644
index 000000000000..95bf57166c59
--- /dev/null
+++ b/drivers/usb/serial/mos7840.c
@@ -0,0 +1,2962 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15 *
16 * Clean ups from Moschip version and a few ioctl implementations by:
17 * Paul B Schroeder <pschroeder "at" uplogix "dot" com>
18 *
19 * Originally based on drivers/usb/serial/io_edgeport.c which is:
20 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
21 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
22 *
23 */
24
25#include <linux/kernel.h>
26#include <linux/errno.h>
27#include <linux/init.h>
28#include <linux/slab.h>
29#include <linux/tty.h>
30#include <linux/tty_driver.h>
31#include <linux/tty_flip.h>
32#include <linux/module.h>
33#include <linux/serial.h>
34#include <linux/usb.h>
35#include <linux/usb/serial.h>
36#include <asm/uaccess.h>
37
38/*
39 * Version Information
40 */
41#define DRIVER_VERSION "1.3.1"
42#define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver"
43
44/*
45 * 16C50 UART register defines
46 */
47
48#define LCR_BITS_5 0x00 /* 5 bits/char */
49#define LCR_BITS_6 0x01 /* 6 bits/char */
50#define LCR_BITS_7 0x02 /* 7 bits/char */
51#define LCR_BITS_8 0x03 /* 8 bits/char */
52#define LCR_BITS_MASK 0x03 /* Mask for bits/char field */
53
54#define LCR_STOP_1 0x00 /* 1 stop bit */
55#define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */
56#define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */
57#define LCR_STOP_MASK 0x04 /* Mask for stop bits field */
58
59#define LCR_PAR_NONE 0x00 /* No parity */
60#define LCR_PAR_ODD 0x08 /* Odd parity */
61#define LCR_PAR_EVEN 0x18 /* Even parity */
62#define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */
63#define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */
64#define LCR_PAR_MASK 0x38 /* Mask for parity field */
65
66#define LCR_SET_BREAK 0x40 /* Set Break condition */
67#define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */
68
69#define MCR_DTR 0x01 /* Assert DTR */
70#define MCR_RTS 0x02 /* Assert RTS */
71#define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */
72#define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */
73#define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */
74#define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */
75
76#define MOS7840_MSR_CTS 0x10 /* Current state of CTS */
77#define MOS7840_MSR_DSR 0x20 /* Current state of DSR */
78#define MOS7840_MSR_RI 0x40 /* Current state of RI */
79#define MOS7840_MSR_CD 0x80 /* Current state of CD */
80
81/*
82 * Defines used for sending commands to port
83 */
84
85#define WAIT_FOR_EVER (HZ * 0 ) /* timeout urb is wait for ever */
86#define MOS_WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
87
88#define MOS_PORT1 0x0200
89#define MOS_PORT2 0x0300
90#define MOS_VENREG 0x0000
91#define MOS_MAX_PORT 0x02
92#define MOS_WRITE 0x0E
93#define MOS_READ 0x0D
94
95/* Requests */
96#define MCS_RD_RTYPE 0xC0
97#define MCS_WR_RTYPE 0x40
98#define MCS_RDREQ 0x0D
99#define MCS_WRREQ 0x0E
100#define MCS_CTRL_TIMEOUT 500
101#define VENDOR_READ_LENGTH (0x01)
102
103#define MAX_NAME_LEN 64
104
105#define ZLP_REG1 0x3A //Zero_Flag_Reg1 58
106#define ZLP_REG5 0x3E //Zero_Flag_Reg5 62
107
108/* For higher baud Rates use TIOCEXBAUD */
109#define TIOCEXBAUD 0x5462
110
111/* vendor id and device id defines */
112
113#define USB_VENDOR_ID_MOSCHIP 0x9710
114#define MOSCHIP_DEVICE_ID_7840 0x7840
115#define MOSCHIP_DEVICE_ID_7820 0x7820
116
117/* Interrupt Rotinue Defines */
118
119#define SERIAL_IIR_RLS 0x06
120#define SERIAL_IIR_MS 0x00
121
122/*
123 * Emulation of the bit mask on the LINE STATUS REGISTER.
124 */
125#define SERIAL_LSR_DR 0x0001
126#define SERIAL_LSR_OE 0x0002
127#define SERIAL_LSR_PE 0x0004
128#define SERIAL_LSR_FE 0x0008
129#define SERIAL_LSR_BI 0x0010
130
131#define MOS_MSR_DELTA_CTS 0x10
132#define MOS_MSR_DELTA_DSR 0x20
133#define MOS_MSR_DELTA_RI 0x40
134#define MOS_MSR_DELTA_CD 0x80
135
136// Serial Port register Address
137#define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01))
138#define FIFO_CONTROL_REGISTER ((__u16)(0x02))
139#define LINE_CONTROL_REGISTER ((__u16)(0x03))
140#define MODEM_CONTROL_REGISTER ((__u16)(0x04))
141#define LINE_STATUS_REGISTER ((__u16)(0x05))
142#define MODEM_STATUS_REGISTER ((__u16)(0x06))
143#define SCRATCH_PAD_REGISTER ((__u16)(0x07))
144#define DIVISOR_LATCH_LSB ((__u16)(0x00))
145#define DIVISOR_LATCH_MSB ((__u16)(0x01))
146
147#define CLK_MULTI_REGISTER ((__u16)(0x02))
148#define CLK_START_VALUE_REGISTER ((__u16)(0x03))
149
150#define SERIAL_LCR_DLAB ((__u16)(0x0080))
151
152/*
153 * URB POOL related defines
154 */
155#define NUM_URBS 16 /* URB Count */
156#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */
157
158
159static struct usb_device_id moschip_port_id_table[] = {
160 {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
161 {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
162 {} /* terminating entry */
163};
164
165static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
166 {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
167 {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
168 {} /* terminating entry */
169};
170
171MODULE_DEVICE_TABLE(usb, moschip_id_table_combined);
172
173/* This structure holds all of the local port information */
174
175struct moschip_port {
176 int port_num; /*Actual port number in the device(1,2,etc) */
177 struct urb *write_urb; /* write URB for this port */
178 struct urb *read_urb; /* read URB for this port */
179 __u8 shadowLCR; /* last LCR value received */
180 __u8 shadowMCR; /* last MCR value received */
181 char open;
182 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
183 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
184 int delta_msr_cond;
185 struct async_icount icount;
186 struct usb_serial_port *port; /* loop back to the owner of this object */
187
188 /*Offsets */
189 __u8 SpRegOffset;
190 __u8 ControlRegOffset;
191 __u8 DcrRegOffset;
192 //for processing control URBS in interrupt context
193 struct urb *control_urb;
194 char *ctrl_buf;
195 int MsrLsr;
196
197 struct urb *write_urb_pool[NUM_URBS];
198};
199
200
201static int debug;
202static int mos7840_num_ports; //this says the number of ports in the device
203static int mos7840_num_open_ports;
204
205
206/*
207 * mos7840_set_reg_sync
208 * To set the Control register by calling usb_fill_control_urb function
209 * by passing usb_sndctrlpipe function as parameter.
210 */
211
212static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg,
213 __u16 val)
214{
215 struct usb_device *dev = port->serial->dev;
216 val = val & 0x00ff;
217 dbg("mos7840_set_reg_sync offset is %x, value %x\n", reg, val);
218
219 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ,
220 MCS_WR_RTYPE, val, reg, NULL, 0,
221 MOS_WDR_TIMEOUT);
222}
223
224/*
225 * mos7840_get_reg_sync
226 * To set the Uart register by calling usb_fill_control_urb function by
227 * passing usb_rcvctrlpipe function as parameter.
228 */
229
230static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg,
231 __u16 * val)
232{
233 struct usb_device *dev = port->serial->dev;
234 int ret = 0;
235
236 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
237 MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH,
238 MOS_WDR_TIMEOUT);
239 dbg("mos7840_get_reg_sync offset is %x, return val %x\n", reg, *val);
240 *val = (*val) & 0x00ff;
241 return ret;
242}
243
244/*
245 * mos7840_set_uart_reg
246 * To set the Uart register by calling usb_fill_control_urb function by
247 * passing usb_sndctrlpipe function as parameter.
248 */
249
250static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg,
251 __u16 val)
252{
253
254 struct usb_device *dev = port->serial->dev;
255 val = val & 0x00ff;
256 // For the UART control registers, the application number need to be Or'ed
257 if (mos7840_num_ports == 4) {
258 val |=
259 (((__u16) port->number - (__u16) (port->serial->minor)) +
260 1) << 8;
261 dbg("mos7840_set_uart_reg application number is %x\n", val);
262 } else {
263 if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) {
264 val |=
265 (((__u16) port->number -
266 (__u16) (port->serial->minor)) + 1) << 8;
267 dbg("mos7840_set_uart_reg application number is %x\n",
268 val);
269 } else {
270 val |=
271 (((__u16) port->number -
272 (__u16) (port->serial->minor)) + 2) << 8;
273 dbg("mos7840_set_uart_reg application number is %x\n",
274 val);
275 }
276 }
277 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ,
278 MCS_WR_RTYPE, val, reg, NULL, 0,
279 MOS_WDR_TIMEOUT);
280
281}
282
283/*
284 * mos7840_get_uart_reg
285 * To set the Control register by calling usb_fill_control_urb function
286 * by passing usb_rcvctrlpipe function as parameter.
287 */
288static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg,
289 __u16 * val)
290{
291 struct usb_device *dev = port->serial->dev;
292 int ret = 0;
293 __u16 Wval;
294
295 //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8);
296 /*Wval is same as application number */
297 if (mos7840_num_ports == 4) {
298 Wval =
299 (((__u16) port->number - (__u16) (port->serial->minor)) +
300 1) << 8;
301 dbg("mos7840_get_uart_reg application number is %x\n", Wval);
302 } else {
303 if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) {
304 Wval =
305 (((__u16) port->number -
306 (__u16) (port->serial->minor)) + 1) << 8;
307 dbg("mos7840_get_uart_reg application number is %x\n",
308 Wval);
309 } else {
310 Wval =
311 (((__u16) port->number -
312 (__u16) (port->serial->minor)) + 2) << 8;
313 dbg("mos7840_get_uart_reg application number is %x\n",
314 Wval);
315 }
316 }
317 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
318 MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH,
319 MOS_WDR_TIMEOUT);
320 *val = (*val) & 0x00ff;
321 return ret;
322}
323
324static void mos7840_dump_serial_port(struct moschip_port *mos7840_port)
325{
326
327 dbg("***************************************\n");
328 dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset);
329 dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset);
330 dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset);
331 dbg("***************************************\n");
332
333}
334
335/************************************************************************/
336/************************************************************************/
337/* I N T E R F A C E F U N C T I O N S */
338/* I N T E R F A C E F U N C T I O N S */
339/************************************************************************/
340/************************************************************************/
341
342static inline void mos7840_set_port_private(struct usb_serial_port *port,
343 struct moschip_port *data)
344{
345 usb_set_serial_port_data(port, (void *)data);
346}
347
348static inline struct moschip_port *mos7840_get_port_private(struct
349 usb_serial_port
350 *port)
351{
352 return (struct moschip_port *)usb_get_serial_port_data(port);
353}
354
355static int mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
356{
357 struct moschip_port *mos7840_port;
358 struct async_icount *icount;
359 mos7840_port = port;
360 icount = &mos7840_port->icount;
361 if (new_msr &
362 (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI |
363 MOS_MSR_DELTA_CD)) {
364 icount = &mos7840_port->icount;
365
366 /* update input line counters */
367 if (new_msr & MOS_MSR_DELTA_CTS) {
368 icount->cts++;
369 }
370 if (new_msr & MOS_MSR_DELTA_DSR) {
371 icount->dsr++;
372 }
373 if (new_msr & MOS_MSR_DELTA_CD) {
374 icount->dcd++;
375 }
376 if (new_msr & MOS_MSR_DELTA_RI) {
377 icount->rng++;
378 }
379 }
380
381 return 0;
382}
383
384static int mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
385{
386 struct async_icount *icount;
387
388 dbg("%s - %02x", __FUNCTION__, new_lsr);
389
390 if (new_lsr & SERIAL_LSR_BI) {
391 //
392 // Parity and Framing errors only count if they
393 // occur exclusive of a break being
394 // received.
395 //
396 new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI);
397 }
398
399 /* update input line counters */
400 icount = &port->icount;
401 if (new_lsr & SERIAL_LSR_BI) {
402 icount->brk++;
403 }
404 if (new_lsr & SERIAL_LSR_OE) {
405 icount->overrun++;
406 }
407 if (new_lsr & SERIAL_LSR_PE) {
408 icount->parity++;
409 }
410 if (new_lsr & SERIAL_LSR_FE) {
411 icount->frame++;
412 }
413
414 return 0;
415}
416
417/************************************************************************/
418/************************************************************************/
419/* U S B C A L L B A C K F U N C T I O N S */
420/* U S B C A L L B A C K F U N C T I O N S */
421/************************************************************************/
422/************************************************************************/
423
424static void mos7840_control_callback(struct urb *urb, struct pt_regs *regs)
425{
426 unsigned char *data;
427 struct moschip_port *mos7840_port;
428 __u8 regval = 0x0;
429
430 if (!urb) {
431 dbg("%s", "Invalid Pointer !!!!:\n");
432 return;
433 }
434
435 switch (urb->status) {
436 case 0:
437 /* success */
438 break;
439 case -ECONNRESET:
440 case -ENOENT:
441 case -ESHUTDOWN:
442 /* this urb is terminated, clean up */
443 dbg("%s - urb shutting down with status: %d", __FUNCTION__,
444 urb->status);
445 return;
446 default:
447 dbg("%s - nonzero urb status received: %d", __FUNCTION__,
448 urb->status);
449 goto exit;
450 }
451
452 mos7840_port = (struct moschip_port *)urb->context;
453
454 dbg("%s urb buffer size is %d\n", __FUNCTION__, urb->actual_length);
455 dbg("%s mos7840_port->MsrLsr is %d port %d\n", __FUNCTION__,
456 mos7840_port->MsrLsr, mos7840_port->port_num);
457 data = urb->transfer_buffer;
458 regval = (__u8) data[0];
459 dbg("%s data is %x\n", __FUNCTION__, regval);
460 if (mos7840_port->MsrLsr == 0)
461 mos7840_handle_new_msr(mos7840_port, regval);
462 else if (mos7840_port->MsrLsr == 1)
463 mos7840_handle_new_lsr(mos7840_port, regval);
464
465 exit:
466 return;
467}
468
469static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,
470 __u16 * val)
471{
472 struct usb_device *dev = mcs->port->serial->dev;
473 struct usb_ctrlrequest *dr = NULL;
474 unsigned char *buffer = NULL;
475 int ret = 0;
476 buffer = (__u8 *) mcs->ctrl_buf;
477
478// dr=(struct usb_ctrlrequest *)(buffer);
479 dr = (void *)(buffer + 2);
480 dr->bRequestType = MCS_RD_RTYPE;
481 dr->bRequest = MCS_RDREQ;
482 dr->wValue = cpu_to_le16(Wval); //0;
483 dr->wIndex = cpu_to_le16(reg);
484 dr->wLength = cpu_to_le16(2);
485
486 usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0),
487 (unsigned char *)dr, buffer, 2,
488 mos7840_control_callback, mcs);
489 mcs->control_urb->transfer_buffer_length = 2;
490 ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC);
491 return ret;
492}
493
494/*****************************************************************************
495 * mos7840_interrupt_callback
496 * this is the callback function for when we have received data on the
497 * interrupt endpoint.
498 *****************************************************************************/
499
500static void mos7840_interrupt_callback(struct urb *urb, struct pt_regs *regs)
501{
502 int result;
503 int length;
504 struct moschip_port *mos7840_port;
505 struct usb_serial *serial;
506 __u16 Data;
507 unsigned char *data;
508 __u8 sp[5], st;
509 int i;
510 __u16 wval;
511
512 dbg("%s", " : Entering\n");
513 if (!urb) {
514 dbg("%s", "Invalid Pointer !!!!:\n");
515 return;
516 }
517
518 switch (urb->status) {
519 case 0:
520 /* success */
521 break;
522 case -ECONNRESET:
523 case -ENOENT:
524 case -ESHUTDOWN:
525 /* this urb is terminated, clean up */
526 dbg("%s - urb shutting down with status: %d", __FUNCTION__,
527 urb->status);
528 return;
529 default:
530 dbg("%s - nonzero urb status received: %d", __FUNCTION__,
531 urb->status);
532 goto exit;
533 }
534
535 length = urb->actual_length;
536 data = urb->transfer_buffer;
537
538 serial = (struct usb_serial *)urb->context;
539
540 /* Moschip get 5 bytes
541 * Byte 1 IIR Port 1 (port.number is 0)
542 * Byte 2 IIR Port 2 (port.number is 1)
543 * Byte 3 IIR Port 3 (port.number is 2)
544 * Byte 4 IIR Port 4 (port.number is 3)
545 * Byte 5 FIFO status for both */
546
547 if (length && length > 5) {
548 dbg("%s \n", "Wrong data !!!");
549 return;
550 }
551
552 sp[0] = (__u8) data[0];
553 sp[1] = (__u8) data[1];
554 sp[2] = (__u8) data[2];
555 sp[3] = (__u8) data[3];
556 st = (__u8) data[4];
557
558 for (i = 0; i < serial->num_ports; i++) {
559 mos7840_port = mos7840_get_port_private(serial->port[i]);
560 wval =
561 (((__u16) serial->port[i]->number -
562 (__u16) (serial->minor)) + 1) << 8;
563 if (mos7840_port->open) {
564 if (sp[i] & 0x01) {
565 dbg("SP%d No Interrupt !!!\n", i);
566 } else {
567 switch (sp[i] & 0x0f) {
568 case SERIAL_IIR_RLS:
569 dbg("Serial Port %d: Receiver status error or ", i);
570 dbg("address bit detected in 9-bit mode\n");
571 mos7840_port->MsrLsr = 1;
572 mos7840_get_reg(mos7840_port, wval,
573 LINE_STATUS_REGISTER,
574 &Data);
575 break;
576 case SERIAL_IIR_MS:
577 dbg("Serial Port %d: Modem status change\n", i);
578 mos7840_port->MsrLsr = 0;
579 mos7840_get_reg(mos7840_port, wval,
580 MODEM_STATUS_REGISTER,
581 &Data);
582 break;
583 }
584 }
585 }
586 }
587 exit:
588 result = usb_submit_urb(urb, GFP_ATOMIC);
589 if (result) {
590 dev_err(&urb->dev->dev,
591 "%s - Error %d submitting interrupt urb\n",
592 __FUNCTION__, result);
593 }
594
595 return;
596
597}
598
599static int mos7840_port_paranoia_check(struct usb_serial_port *port,
600 const char *function)
601{
602 if (!port) {
603 dbg("%s - port == NULL", function);
604 return -1;
605 }
606 if (!port->serial) {
607 dbg("%s - port->serial == NULL", function);
608 return -1;
609 }
610
611 return 0;
612}
613
614/* Inline functions to check the sanity of a pointer that is passed to us */
615static int mos7840_serial_paranoia_check(struct usb_serial *serial,
616 const char *function)
617{
618 if (!serial) {
619 dbg("%s - serial == NULL", function);
620 return -1;
621 }
622 if (!serial->type) {
623 dbg("%s - serial->type == NULL!", function);
624 return -1;
625 }
626
627 return 0;
628}
629
630static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port,
631 const char *function)
632{
633 /* if no port was specified, or it fails a paranoia check */
634 if (!port ||
635 mos7840_port_paranoia_check(port, function) ||
636 mos7840_serial_paranoia_check(port->serial, function)) {
637 /* then say that we don't have a valid usb_serial thing, which will * end up genrating -ENODEV return values */
638 return NULL;
639 }
640
641 return port->serial;
642}
643
644/*****************************************************************************
645 * mos7840_bulk_in_callback
646 * this is the callback function for when we have received data on the
647 * bulk in endpoint.
648 *****************************************************************************/
649
650static void mos7840_bulk_in_callback(struct urb *urb, struct pt_regs *regs)
651{
652 int status;
653 unsigned char *data;
654 struct usb_serial *serial;
655 struct usb_serial_port *port;
656 struct moschip_port *mos7840_port;
657 struct tty_struct *tty;
658
659 if (!urb) {
660 dbg("%s", "Invalid Pointer !!!!:\n");
661 return;
662 }
663
664 if (urb->status) {
665 dbg("nonzero read bulk status received: %d", urb->status);
666 return;
667 }
668
669 mos7840_port = (struct moschip_port *)urb->context;
670 if (!mos7840_port) {
671 dbg("%s", "NULL mos7840_port pointer \n");
672 return;
673 }
674
675 port = (struct usb_serial_port *)mos7840_port->port;
676 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
677 dbg("%s", "Port Paranoia failed \n");
678 return;
679 }
680
681 serial = mos7840_get_usb_serial(port, __FUNCTION__);
682 if (!serial) {
683 dbg("%s\n", "Bad serial pointer ");
684 return;
685 }
686
687 dbg("%s\n", "Entering... \n");
688
689 data = urb->transfer_buffer;
690
691 dbg("%s", "Entering ........... \n");
692
693 if (urb->actual_length) {
694 tty = mos7840_port->port->tty;
695 if (tty) {
696 tty_buffer_request_room(tty, urb->actual_length);
697 tty_insert_flip_string(tty, data, urb->actual_length);
698 dbg(" %s \n", data);
699 tty_flip_buffer_push(tty);
700 }
701 mos7840_port->icount.rx += urb->actual_length;
702 dbg("mos7840_port->icount.rx is %d:\n",
703 mos7840_port->icount.rx);
704 }
705
706 if (!mos7840_port->read_urb) {
707 dbg("%s", "URB KILLED !!!\n");
708 return;
709 }
710
711 if (mos7840_port->read_urb->status != -EINPROGRESS) {
712 mos7840_port->read_urb->dev = serial->dev;
713
714 status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
715
716 if (status) {
717 dbg(" usb_submit_urb(read bulk) failed, status = %d",
718 status);
719 }
720 }
721}
722
723/*****************************************************************************
724 * mos7840_bulk_out_data_callback
725 * this is the callback function for when we have finished sending serial data
726 * on the bulk out endpoint.
727 *****************************************************************************/
728
729static void mos7840_bulk_out_data_callback(struct urb *urb,
730 struct pt_regs *regs)
731{
732 struct moschip_port *mos7840_port;
733 struct tty_struct *tty;
734 if (!urb) {
735 dbg("%s", "Invalid Pointer !!!!:\n");
736 return;
737 }
738
739 if (urb->status) {
740 dbg("nonzero write bulk status received:%d\n", urb->status);
741 return;
742 }
743
744 mos7840_port = (struct moschip_port *)urb->context;
745 if (!mos7840_port) {
746 dbg("%s", "NULL mos7840_port pointer \n");
747 return;
748 }
749
750 if (mos7840_port_paranoia_check(mos7840_port->port, __FUNCTION__)) {
751 dbg("%s", "Port Paranoia failed \n");
752 return;
753 }
754
755 dbg("%s \n", "Entering .........");
756
757 tty = mos7840_port->port->tty;
758
759 if (tty && mos7840_port->open) {
760 /* let the tty driver wakeup if it has a special *
761 * write_wakeup function */
762
763 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
764 && tty->ldisc.write_wakeup) {
765 (tty->ldisc.write_wakeup) (tty);
766 }
767
768 /* tell the tty driver that something has changed */
769 wake_up_interruptible(&tty->write_wait);
770 }
771
772}
773
774/************************************************************************/
775/* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */
776/************************************************************************/
777#ifdef MCSSerialProbe
778static int mos7840_serial_probe(struct usb_serial *serial,
779 const struct usb_device_id *id)
780{
781
782 /*need to implement the mode_reg reading and updating\
783 structures usb_serial_ device_type\
784 (i.e num_ports, num_bulkin,bulkout etc) */
785 /* Also we can update the changes attach */
786 return 1;
787}
788#endif
789
790/*****************************************************************************
791 * mos7840_open
792 * this function is called by the tty driver when a port is opened
793 * If successful, we return 0
794 * Otherwise we return a negative error number.
795 *****************************************************************************/
796
797static int mos7840_open(struct usb_serial_port *port, struct file *filp)
798{
799 int response;
800 int j;
801 struct usb_serial *serial;
802 struct urb *urb;
803 __u16 Data;
804 int status;
805 struct moschip_port *mos7840_port;
806
807 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
808 dbg("%s", "Port Paranoia failed \n");
809 return -ENODEV;
810 }
811
812 mos7840_num_open_ports++;
813 serial = port->serial;
814
815 if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) {
816 dbg("%s", "Serial Paranoia failed \n");
817 return -ENODEV;
818 }
819
820 mos7840_port = mos7840_get_port_private(port);
821
822 if (mos7840_port == NULL)
823 return -ENODEV;
824
825 usb_clear_halt(serial->dev, port->write_urb->pipe);
826 usb_clear_halt(serial->dev, port->read_urb->pipe);
827
828 /* Initialising the write urb pool */
829 for (j = 0; j < NUM_URBS; ++j) {
830 urb = usb_alloc_urb(0, SLAB_ATOMIC);
831 mos7840_port->write_urb_pool[j] = urb;
832
833 if (urb == NULL) {
834 err("No more urbs???");
835 continue;
836 }
837
838 urb->transfer_buffer = NULL;
839 urb->transfer_buffer =
840 kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
841 if (!urb->transfer_buffer) {
842 err("%s-out of memory for urb buffers.", __FUNCTION__);
843 continue;
844 }
845 }
846
847/*****************************************************************************
848 * Initialize MCS7840 -- Write Init values to corresponding Registers
849 *
850 * Register Index
851 * 1 : IER
852 * 2 : FCR
853 * 3 : LCR
854 * 4 : MCR
855 *
856 * 0x08 : SP1/2 Control Reg
857 *****************************************************************************/
858
859//NEED to check the following Block
860
861 status = 0;
862 Data = 0x0;
863 status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data);
864 if (status < 0) {
865 dbg("Reading Spreg failed\n");
866 return -1;
867 }
868 Data |= 0x80;
869 status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
870 if (status < 0) {
871 dbg("writing Spreg failed\n");
872 return -1;
873 }
874
875 Data &= ~0x80;
876 status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
877 if (status < 0) {
878 dbg("writing Spreg failed\n");
879 return -1;
880 }
881//End of block to be checked
882
883 status = 0;
884 Data = 0x0;
885 status =
886 mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
887 if (status < 0) {
888 dbg("Reading Controlreg failed\n");
889 return -1;
890 }
891 Data |= 0x08; //Driver done bit
892 Data |= 0x20; //rx_disable
893 status = 0;
894 status =
895 mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
896 if (status < 0) {
897 dbg("writing Controlreg failed\n");
898 return -1;
899 }
900 //do register settings here
901 // Set all regs to the device default values.
902 ////////////////////////////////////
903 // First Disable all interrupts.
904 ////////////////////////////////////
905
906 Data = 0x00;
907 status = 0;
908 status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
909 if (status < 0) {
910 dbg("disableing interrupts failed\n");
911 return -1;
912 }
913 // Set FIFO_CONTROL_REGISTER to the default value
914 Data = 0x00;
915 status = 0;
916 status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
917 if (status < 0) {
918 dbg("Writing FIFO_CONTROL_REGISTER failed\n");
919 return -1;
920 }
921
922 Data = 0xcf;
923 status = 0;
924 status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
925 if (status < 0) {
926 dbg("Writing FIFO_CONTROL_REGISTER failed\n");
927 return -1;
928 }
929
930 Data = 0x03;
931 status = 0;
932 status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
933 mos7840_port->shadowLCR = Data;
934
935 Data = 0x0b;
936 status = 0;
937 status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
938 mos7840_port->shadowMCR = Data;
939
940 Data = 0x00;
941 status = 0;
942 status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
943 mos7840_port->shadowLCR = Data;
944
945 Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
946 status = 0;
947 status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
948
949 Data = 0x0c;
950 status = 0;
951 status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data);
952
953 Data = 0x0;
954 status = 0;
955 status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data);
956
957 Data = 0x00;
958 status = 0;
959 status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
960
961 Data = Data & ~SERIAL_LCR_DLAB;
962 status = 0;
963 status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
964 mos7840_port->shadowLCR = Data;
965
966 //clearing Bulkin and Bulkout Fifo
967 Data = 0x0;
968 status = 0;
969 status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data);
970
971 Data = Data | 0x0c;
972 status = 0;
973 status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
974
975 Data = Data & ~0x0c;
976 status = 0;
977 status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
978 //Finally enable all interrupts
979 Data = 0x0;
980 Data = 0x0c;
981 status = 0;
982 status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
983
984 //clearing rx_disable
985 Data = 0x0;
986 status = 0;
987 status =
988 mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
989 Data = Data & ~0x20;
990 status = 0;
991 status =
992 mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
993
994 // rx_negate
995 Data = 0x0;
996 status = 0;
997 status =
998 mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
999 Data = Data | 0x10;
1000 status = 0;
1001 status =
1002 mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
1003
1004 /* force low_latency on so that our tty_push actually forces *
1005 * the data through,otherwise it is scheduled, and with *
1006 * high data rates (like with OHCI) data can get lost. */
1007
1008 if (port->tty)
1009 port->tty->low_latency = 1;
1010/* Check to see if we've set up our endpoint info yet *
1011 * (can't set it up in mos7840_startup as the structures *
1012 * were not set up at that time.) */
1013 if (mos7840_num_open_ports == 1) {
1014 if (serial->port[0]->interrupt_in_buffer == NULL) {
1015
1016 /* set up interrupt urb */
1017
1018 usb_fill_int_urb(serial->port[0]->interrupt_in_urb,
1019 serial->dev,
1020 usb_rcvintpipe(serial->dev,
1021 serial->port[0]->
1022 interrupt_in_endpointAddress),
1023 serial->port[0]->interrupt_in_buffer,
1024 serial->port[0]->interrupt_in_urb->
1025 transfer_buffer_length,
1026 mos7840_interrupt_callback,
1027 serial,
1028 serial->port[0]->interrupt_in_urb->
1029 interval);
1030
1031 /* start interrupt read for mos7840 *
1032 * will continue as long as mos7840 is connected */
1033
1034 response =
1035 usb_submit_urb(serial->port[0]->interrupt_in_urb,
1036 GFP_KERNEL);
1037 if (response) {
1038 err("%s - Error %d submitting interrupt urb",
1039 __FUNCTION__, response);
1040 }
1041
1042 }
1043
1044 }
1045
1046 /* see if we've set up our endpoint info yet *
1047 * (can't set it up in mos7840_startup as the *
1048 * structures were not set up at that time.) */
1049
1050 dbg("port number is %d \n", port->number);
1051 dbg("serial number is %d \n", port->serial->minor);
1052 dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress);
1053 dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress);
1054 dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress);
1055 dbg("port's number in the device is %d\n", mos7840_port->port_num);
1056 mos7840_port->read_urb = port->read_urb;
1057
1058 /* set up our bulk in urb */
1059
1060 usb_fill_bulk_urb(mos7840_port->read_urb,
1061 serial->dev,
1062 usb_rcvbulkpipe(serial->dev,
1063 port->bulk_in_endpointAddress),
1064 port->bulk_in_buffer,
1065 mos7840_port->read_urb->transfer_buffer_length,
1066 mos7840_bulk_in_callback, mos7840_port);
1067
1068 dbg("mos7840_open: bulkin endpoint is %d\n",
1069 port->bulk_in_endpointAddress);
1070 response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL);
1071 if (response) {
1072 err("%s - Error %d submitting control urb", __FUNCTION__,
1073 response);
1074 }
1075
1076 /* initialize our wait queues */
1077 init_waitqueue_head(&mos7840_port->wait_chase);
1078 init_waitqueue_head(&mos7840_port->delta_msr_wait);
1079
1080 /* initialize our icount structure */
1081 memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount));
1082
1083 /* initialize our port settings */
1084 mos7840_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */
1085 /* send a open port command */
1086 mos7840_port->open = 1;
1087 //mos7840_change_port_settings(mos7840_port,old_termios);
1088 mos7840_port->icount.tx = 0;
1089 mos7840_port->icount.rx = 0;
1090
1091 dbg("\n\nusb_serial serial:%x mos7840_port:%x\n usb_serial_port port:%x\n\n", (unsigned int)serial, (unsigned int)mos7840_port, (unsigned int)port);
1092
1093 return 0;
1094
1095}
1096
1097/*****************************************************************************
1098 * mos7840_chars_in_buffer
1099 * this function is called by the tty driver when it wants to know how many
1100 * bytes of data we currently have outstanding in the port (data that has
1101 * been written, but hasn't made it out the port yet)
1102 * If successful, we return the number of bytes left to be written in the
1103 * system,
1104 * Otherwise we return a negative error number.
1105 *****************************************************************************/
1106
1107static int mos7840_chars_in_buffer(struct usb_serial_port *port)
1108{
1109 int i;
1110 int chars = 0;
1111 struct moschip_port *mos7840_port;
1112
1113 dbg("%s \n", " mos7840_chars_in_buffer:entering ...........");
1114
1115 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1116 dbg("%s", "Invalid port \n");
1117 return -1;
1118 }
1119
1120 mos7840_port = mos7840_get_port_private(port);
1121 if (mos7840_port == NULL) {
1122 dbg("%s \n", "mos7840_break:leaving ...........");
1123 return -1;
1124 }
1125
1126 for (i = 0; i < NUM_URBS; ++i) {
1127 if (mos7840_port->write_urb_pool[i]->status == -EINPROGRESS) {
1128 chars += URB_TRANSFER_BUFFER_SIZE;
1129 }
1130 }
1131 dbg("%s - returns %d", __FUNCTION__, chars);
1132 return (chars);
1133
1134}
1135
1136/************************************************************************
1137 *
1138 * mos7840_block_until_tx_empty
1139 *
1140 * This function will block the close until one of the following:
1141 * 1. TX count are 0
1142 * 2. The mos7840 has stopped
1143 * 3. A timout of 3 seconds without activity has expired
1144 *
1145 ************************************************************************/
1146static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port)
1147{
1148 int timeout = HZ / 10;
1149 int wait = 30;
1150 int count;
1151
1152 while (1) {
1153
1154 count = mos7840_chars_in_buffer(mos7840_port->port);
1155
1156 /* Check for Buffer status */
1157 if (count <= 0) {
1158 return;
1159 }
1160
1161 /* Block the thread for a while */
1162 interruptible_sleep_on_timeout(&mos7840_port->wait_chase,
1163 timeout);
1164
1165 /* No activity.. count down section */
1166 wait--;
1167 if (wait == 0) {
1168 dbg("%s - TIMEOUT", __FUNCTION__);
1169 return;
1170 } else {
1171 /* Reset timout value back to seconds */
1172 wait = 30;
1173 }
1174 }
1175}
1176
1177/*****************************************************************************
1178 * mos7840_close
1179 * this function is called by the tty driver when a port is closed
1180 *****************************************************************************/
1181
1182static void mos7840_close(struct usb_serial_port *port, struct file *filp)
1183{
1184 struct usb_serial *serial;
1185 struct moschip_port *mos7840_port;
1186 int j;
1187 __u16 Data;
1188
1189 dbg("%s\n", "mos7840_close:entering...");
1190
1191 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1192 dbg("%s", "Port Paranoia failed \n");
1193 return;
1194 }
1195
1196 serial = mos7840_get_usb_serial(port, __FUNCTION__);
1197 if (!serial) {
1198 dbg("%s", "Serial Paranoia failed \n");
1199 return;
1200 }
1201
1202 mos7840_port = mos7840_get_port_private(port);
1203
1204 if (mos7840_port == NULL) {
1205 return;
1206 }
1207
1208 for (j = 0; j < NUM_URBS; ++j)
1209 usb_kill_urb(mos7840_port->write_urb_pool[j]);
1210
1211 /* Freeing Write URBs */
1212 for (j = 0; j < NUM_URBS; ++j) {
1213 if (mos7840_port->write_urb_pool[j]) {
1214 if (mos7840_port->write_urb_pool[j]->transfer_buffer)
1215 kfree(mos7840_port->write_urb_pool[j]->
1216 transfer_buffer);
1217
1218 usb_free_urb(mos7840_port->write_urb_pool[j]);
1219 }
1220 }
1221
1222 if (serial->dev) {
1223 /* flush and block until tx is empty */
1224 mos7840_block_until_tx_empty(mos7840_port);
1225 }
1226
1227 /* While closing port, shutdown all bulk read, write *
1228 * and interrupt read if they exists */
1229 if (serial->dev) {
1230
1231 if (mos7840_port->write_urb) {
1232 dbg("%s", "Shutdown bulk write\n");
1233 usb_kill_urb(mos7840_port->write_urb);
1234 }
1235
1236 if (mos7840_port->read_urb) {
1237 dbg("%s", "Shutdown bulk read\n");
1238 usb_kill_urb(mos7840_port->read_urb);
1239 }
1240 if ((&mos7840_port->control_urb)) {
1241 dbg("%s", "Shutdown control read\n");
1242 // usb_kill_urb (mos7840_port->control_urb);
1243
1244 }
1245 }
1246// if(mos7840_port->ctrl_buf != NULL)
1247// kfree(mos7840_port->ctrl_buf);
1248 mos7840_num_open_ports--;
1249 dbg("mos7840_num_open_ports in close%d:in port%d\n",
1250 mos7840_num_open_ports, port->number);
1251 if (mos7840_num_open_ports == 0) {
1252 if (serial->port[0]->interrupt_in_urb) {
1253 dbg("%s", "Shutdown interrupt_in_urb\n");
1254 }
1255 }
1256
1257 if (mos7840_port->write_urb) {
1258 /* if this urb had a transfer buffer already (old tx) free it */
1259
1260 if (mos7840_port->write_urb->transfer_buffer != NULL) {
1261 kfree(mos7840_port->write_urb->transfer_buffer);
1262 }
1263 usb_free_urb(mos7840_port->write_urb);
1264 }
1265
1266 Data = 0x0;
1267 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
1268
1269 Data = 0x00;
1270 mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
1271
1272 mos7840_port->open = 0;
1273
1274 dbg("%s \n", "Leaving ............");
1275}
1276
1277/************************************************************************
1278 *
1279 * mos7840_block_until_chase_response
1280 *
1281 * This function will block the close until one of the following:
1282 * 1. Response to our Chase comes from mos7840
1283 * 2. A timout of 10 seconds without activity has expired
1284 * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty)
1285 *
1286 ************************************************************************/
1287
1288static void mos7840_block_until_chase_response(struct moschip_port
1289 *mos7840_port)
1290{
1291 int timeout = 1 * HZ;
1292 int wait = 10;
1293 int count;
1294
1295 while (1) {
1296 count = mos7840_chars_in_buffer(mos7840_port->port);
1297
1298 /* Check for Buffer status */
1299 if (count <= 0) {
1300 return;
1301 }
1302
1303 /* Block the thread for a while */
1304 interruptible_sleep_on_timeout(&mos7840_port->wait_chase,
1305 timeout);
1306 /* No activity.. count down section */
1307 wait--;
1308 if (wait == 0) {
1309 dbg("%s - TIMEOUT", __FUNCTION__);
1310 return;
1311 } else {
1312 /* Reset timout value back to seconds */
1313 wait = 10;
1314 }
1315 }
1316
1317}
1318
1319/*****************************************************************************
1320 * mos7840_break
1321 * this function sends a break to the port
1322 *****************************************************************************/
1323static void mos7840_break(struct usb_serial_port *port, int break_state)
1324{
1325 unsigned char data;
1326 struct usb_serial *serial;
1327 struct moschip_port *mos7840_port;
1328
1329 dbg("%s \n", "Entering ...........");
1330 dbg("mos7840_break: Start\n");
1331
1332 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1333 dbg("%s", "Port Paranoia failed \n");
1334 return;
1335 }
1336
1337 serial = mos7840_get_usb_serial(port, __FUNCTION__);
1338 if (!serial) {
1339 dbg("%s", "Serial Paranoia failed \n");
1340 return;
1341 }
1342
1343 mos7840_port = mos7840_get_port_private(port);
1344
1345 if (mos7840_port == NULL) {
1346 return;
1347 }
1348
1349 if (serial->dev) {
1350
1351 /* flush and block until tx is empty */
1352 mos7840_block_until_chase_response(mos7840_port);
1353 }
1354
1355 if (break_state == -1) {
1356 data = mos7840_port->shadowLCR | LCR_SET_BREAK;
1357 } else {
1358 data = mos7840_port->shadowLCR & ~LCR_SET_BREAK;
1359 }
1360
1361 mos7840_port->shadowLCR = data;
1362 dbg("mcs7840_break mos7840_port->shadowLCR is %x\n",
1363 mos7840_port->shadowLCR);
1364 mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER,
1365 mos7840_port->shadowLCR);
1366
1367 return;
1368}
1369
1370/*****************************************************************************
1371 * mos7840_write_room
1372 * this function is called by the tty driver when it wants to know how many
1373 * bytes of data we can accept for a specific port.
1374 * If successful, we return the amount of room that we have for this port
1375 * Otherwise we return a negative error number.
1376 *****************************************************************************/
1377
1378static int mos7840_write_room(struct usb_serial_port *port)
1379{
1380 int i;
1381 int room = 0;
1382 struct moschip_port *mos7840_port;
1383
1384 dbg("%s \n", " mos7840_write_room:entering ...........");
1385
1386 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1387 dbg("%s", "Invalid port \n");
1388 dbg("%s \n", " mos7840_write_room:leaving ...........");
1389 return -1;
1390 }
1391
1392 mos7840_port = mos7840_get_port_private(port);
1393 if (mos7840_port == NULL) {
1394 dbg("%s \n", "mos7840_break:leaving ...........");
1395 return -1;
1396 }
1397
1398 for (i = 0; i < NUM_URBS; ++i) {
1399 if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) {
1400 room += URB_TRANSFER_BUFFER_SIZE;
1401 }
1402 }
1403
1404 dbg("%s - returns %d", __FUNCTION__, room);
1405 return (room);
1406
1407}
1408
1409/*****************************************************************************
1410 * mos7840_write
1411 * this function is called by the tty driver when data should be written to
1412 * the port.
1413 * If successful, we return the number of bytes written, otherwise we
1414 * return a negative error number.
1415 *****************************************************************************/
1416
1417static int mos7840_write(struct usb_serial_port *port,
1418 const unsigned char *data, int count)
1419{
1420 int status;
1421 int i;
1422 int bytes_sent = 0;
1423 int transfer_size;
1424 int from_user = 0;
1425
1426 struct moschip_port *mos7840_port;
1427 struct usb_serial *serial;
1428 struct urb *urb;
1429 //__u16 Data;
1430 const unsigned char *current_position = data;
1431 unsigned char *data1;
1432 dbg("%s \n", "entering ...........");
1433 //dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",mos7840_port->shadowLCR);
1434
1435#ifdef NOTMOS7840
1436 Data = 0x00;
1437 status = 0;
1438 status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
1439 mos7840_port->shadowLCR = Data;
1440 dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data);
1441 dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",
1442 mos7840_port->shadowLCR);
1443
1444 //Data = 0x03;
1445 //status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data);
1446 //mos7840_port->shadowLCR=Data;//Need to add later
1447
1448 Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
1449 status = 0;
1450 status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
1451
1452 //Data = 0x0c;
1453 //status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data);
1454 Data = 0x00;
1455 status = 0;
1456 status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data);
1457 dbg("mos7840_write:DLL value is %x\n", Data);
1458
1459 Data = 0x0;
1460 status = 0;
1461 status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data);
1462 dbg("mos7840_write:DLM value is %x\n", Data);
1463
1464 Data = Data & ~SERIAL_LCR_DLAB;
1465 dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",
1466 mos7840_port->shadowLCR);
1467 status = 0;
1468 status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
1469#endif
1470
1471 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1472 dbg("%s", "Port Paranoia failed \n");
1473 return -1;
1474 }
1475
1476 serial = port->serial;
1477 if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) {
1478 dbg("%s", "Serial Paranoia failed \n");
1479 return -1;
1480 }
1481
1482 mos7840_port = mos7840_get_port_private(port);
1483 if (mos7840_port == NULL) {
1484 dbg("%s", "mos7840_port is NULL\n");
1485 return -1;
1486 }
1487
1488 /* try to find a free urb in the list */
1489 urb = NULL;
1490
1491 for (i = 0; i < NUM_URBS; ++i) {
1492 if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) {
1493 urb = mos7840_port->write_urb_pool[i];
1494 dbg("\nURB:%d", i);
1495 break;
1496 }
1497 }
1498
1499 if (urb == NULL) {
1500 dbg("%s - no more free urbs", __FUNCTION__);
1501 goto exit;
1502 }
1503
1504 if (urb->transfer_buffer == NULL) {
1505 urb->transfer_buffer =
1506 kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
1507
1508 if (urb->transfer_buffer == NULL) {
1509 err("%s no more kernel memory...", __FUNCTION__);
1510 goto exit;
1511 }
1512 }
1513 transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE);
1514
1515 if (from_user) {
1516 if (copy_from_user
1517 (urb->transfer_buffer, current_position, transfer_size)) {
1518 bytes_sent = -EFAULT;
1519 goto exit;
1520 }
1521 } else {
1522 memcpy(urb->transfer_buffer, current_position, transfer_size);
1523 }
1524
1525 /* fill urb with data and submit */
1526 usb_fill_bulk_urb(urb,
1527 serial->dev,
1528 usb_sndbulkpipe(serial->dev,
1529 port->bulk_out_endpointAddress),
1530 urb->transfer_buffer,
1531 transfer_size,
1532 mos7840_bulk_out_data_callback, mos7840_port);
1533
1534 data1 = urb->transfer_buffer;
1535 dbg("\nbulkout endpoint is %d", port->bulk_out_endpointAddress);
1536
1537 /* send it down the pipe */
1538 status = usb_submit_urb(urb, GFP_ATOMIC);
1539
1540 if (status) {
1541 err("%s - usb_submit_urb(write bulk) failed with status = %d",
1542 __FUNCTION__, status);
1543 bytes_sent = status;
1544 goto exit;
1545 }
1546 bytes_sent = transfer_size;
1547 mos7840_port->icount.tx += transfer_size;
1548 dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx);
1549 exit:
1550
1551 return bytes_sent;
1552
1553}
1554
1555/*****************************************************************************
1556 * mos7840_throttle
1557 * this function is called by the tty driver when it wants to stop the data
1558 * being read from the port.
1559 *****************************************************************************/
1560
1561static void mos7840_throttle(struct usb_serial_port *port)
1562{
1563 struct moschip_port *mos7840_port;
1564 struct tty_struct *tty;
1565 int status;
1566
1567 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1568 dbg("%s", "Invalid port \n");
1569 return;
1570 }
1571
1572 dbg("- port %d\n", port->number);
1573
1574 mos7840_port = mos7840_get_port_private(port);
1575
1576 if (mos7840_port == NULL)
1577 return;
1578
1579 if (!mos7840_port->open) {
1580 dbg("%s\n", "port not opened");
1581 return;
1582 }
1583
1584 dbg("%s", "Entering .......... \n");
1585
1586 tty = port->tty;
1587 if (!tty) {
1588 dbg("%s - no tty available", __FUNCTION__);
1589 return;
1590 }
1591
1592 /* if we are implementing XON/XOFF, send the stop character */
1593 if (I_IXOFF(tty)) {
1594 unsigned char stop_char = STOP_CHAR(tty);
1595 status = mos7840_write(port, &stop_char, 1);
1596 if (status <= 0) {
1597 return;
1598 }
1599 }
1600
1601 /* if we are implementing RTS/CTS, toggle that line */
1602 if (tty->termios->c_cflag & CRTSCTS) {
1603 mos7840_port->shadowMCR &= ~MCR_RTS;
1604 status = 0;
1605 status =
1606 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
1607 mos7840_port->shadowMCR);
1608
1609 if (status < 0) {
1610 return;
1611 }
1612 }
1613
1614 return;
1615}
1616
1617/*****************************************************************************
1618 * mos7840_unthrottle
1619 * this function is called by the tty driver when it wants to resume the data
1620 * being read from the port (called after SerialThrottle is called)
1621 *****************************************************************************/
1622static void mos7840_unthrottle(struct usb_serial_port *port)
1623{
1624 struct tty_struct *tty;
1625 int status;
1626 struct moschip_port *mos7840_port = mos7840_get_port_private(port);
1627
1628 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1629 dbg("%s", "Invalid port \n");
1630 return;
1631 }
1632
1633 if (mos7840_port == NULL)
1634 return;
1635
1636 if (!mos7840_port->open) {
1637 dbg("%s - port not opened", __FUNCTION__);
1638 return;
1639 }
1640
1641 dbg("%s", "Entering .......... \n");
1642
1643 tty = port->tty;
1644 if (!tty) {
1645 dbg("%s - no tty available", __FUNCTION__);
1646 return;
1647 }
1648
1649 /* if we are implementing XON/XOFF, send the start character */
1650 if (I_IXOFF(tty)) {
1651 unsigned char start_char = START_CHAR(tty);
1652 status = mos7840_write(port, &start_char, 1);
1653 if (status <= 0) {
1654 return;
1655 }
1656 }
1657
1658 /* if we are implementing RTS/CTS, toggle that line */
1659 if (tty->termios->c_cflag & CRTSCTS) {
1660 mos7840_port->shadowMCR |= MCR_RTS;
1661 status = 0;
1662 status =
1663 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
1664 mos7840_port->shadowMCR);
1665 if (status < 0) {
1666 return;
1667 }
1668 }
1669
1670 return;
1671}
1672
1673static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file)
1674{
1675 struct moschip_port *mos7840_port;
1676 unsigned int result;
1677 __u16 msr;
1678 __u16 mcr;
1679 int status = 0;
1680 mos7840_port = mos7840_get_port_private(port);
1681
1682 dbg("%s - port %d", __FUNCTION__, port->number);
1683
1684 if (mos7840_port == NULL)
1685 return -ENODEV;
1686
1687 status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr);
1688 status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr);
1689 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
1690 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
1691 | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0)
1692 | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0)
1693 | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0)
1694 | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0)
1695 | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0);
1696
1697 dbg("%s - 0x%04X", __FUNCTION__, result);
1698
1699 return result;
1700}
1701
1702static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
1703 unsigned int set, unsigned int clear)
1704{
1705 struct moschip_port *mos7840_port;
1706 unsigned int mcr;
1707 unsigned int status;
1708
1709 dbg("%s - port %d", __FUNCTION__, port->number);
1710
1711 mos7840_port = mos7840_get_port_private(port);
1712
1713 if (mos7840_port == NULL)
1714 return -ENODEV;
1715
1716 mcr = mos7840_port->shadowMCR;
1717 if (clear & TIOCM_RTS)
1718 mcr &= ~MCR_RTS;
1719 if (clear & TIOCM_DTR)
1720 mcr &= ~MCR_DTR;
1721 if (clear & TIOCM_LOOP)
1722 mcr &= ~MCR_LOOPBACK;
1723
1724 if (set & TIOCM_RTS)
1725 mcr |= MCR_RTS;
1726 if (set & TIOCM_DTR)
1727 mcr |= MCR_DTR;
1728 if (set & TIOCM_LOOP)
1729 mcr |= MCR_LOOPBACK;
1730
1731 mos7840_port->shadowMCR = mcr;
1732
1733 status = 0;
1734 status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr);
1735 if (status < 0) {
1736 dbg("setting MODEM_CONTROL_REGISTER Failed\n");
1737 return -1;
1738 }
1739
1740 return 0;
1741}
1742
1743/*****************************************************************************
1744 * mos7840_calc_baud_rate_divisor
1745 * this function calculates the proper baud rate divisor for the specified
1746 * baud rate.
1747 *****************************************************************************/
1748static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor,
1749 __u16 * clk_sel_val)
1750{
1751
1752 dbg("%s - %d", __FUNCTION__, baudRate);
1753
1754 if (baudRate <= 115200) {
1755 *divisor = 115200 / baudRate;
1756 *clk_sel_val = 0x0;
1757 }
1758 if ((baudRate > 115200) && (baudRate <= 230400)) {
1759 *divisor = 230400 / baudRate;
1760 *clk_sel_val = 0x10;
1761 } else if ((baudRate > 230400) && (baudRate <= 403200)) {
1762 *divisor = 403200 / baudRate;
1763 *clk_sel_val = 0x20;
1764 } else if ((baudRate > 403200) && (baudRate <= 460800)) {
1765 *divisor = 460800 / baudRate;
1766 *clk_sel_val = 0x30;
1767 } else if ((baudRate > 460800) && (baudRate <= 806400)) {
1768 *divisor = 806400 / baudRate;
1769 *clk_sel_val = 0x40;
1770 } else if ((baudRate > 806400) && (baudRate <= 921600)) {
1771 *divisor = 921600 / baudRate;
1772 *clk_sel_val = 0x50;
1773 } else if ((baudRate > 921600) && (baudRate <= 1572864)) {
1774 *divisor = 1572864 / baudRate;
1775 *clk_sel_val = 0x60;
1776 } else if ((baudRate > 1572864) && (baudRate <= 3145728)) {
1777 *divisor = 3145728 / baudRate;
1778 *clk_sel_val = 0x70;
1779 }
1780 return 0;
1781
1782#ifdef NOTMCS7840
1783
1784 for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) {
1785 if (mos7840_divisor_table[i].BaudRate == baudrate) {
1786 *divisor = mos7840_divisor_table[i].Divisor;
1787 return 0;
1788 }
1789 }
1790
1791 /* After trying for all the standard baud rates *
1792 * Try calculating the divisor for this baud rate */
1793
1794 if (baudrate > 75 && baudrate < 230400) {
1795 /* get the divisor */
1796 custom = (__u16) (230400L / baudrate);
1797
1798 /* Check for round off */
1799 round1 = (__u16) (2304000L / baudrate);
1800 round = (__u16) (round1 - (custom * 10));
1801 if (round > 4) {
1802 custom++;
1803 }
1804 *divisor = custom;
1805
1806 dbg(" Baud %d = %d\n", baudrate, custom);
1807 return 0;
1808 }
1809
1810 dbg("%s\n", " Baud calculation Failed...");
1811 return -1;
1812#endif
1813}
1814
1815/*****************************************************************************
1816 * mos7840_send_cmd_write_baud_rate
1817 * this function sends the proper command to change the baud rate of the
1818 * specified port.
1819 *****************************************************************************/
1820
1821static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
1822 int baudRate)
1823{
1824 int divisor = 0;
1825 int status;
1826 __u16 Data;
1827 unsigned char number;
1828 __u16 clk_sel_val;
1829 struct usb_serial_port *port;
1830
1831 if (mos7840_port == NULL)
1832 return -1;
1833
1834 port = (struct usb_serial_port *)mos7840_port->port;
1835 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1836 dbg("%s", "Invalid port \n");
1837 return -1;
1838 }
1839
1840 if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) {
1841 dbg("%s", "Invalid Serial \n");
1842 return -1;
1843 }
1844
1845 dbg("%s", "Entering .......... \n");
1846
1847 number = mos7840_port->port->number - mos7840_port->port->serial->minor;
1848
1849 dbg("%s - port = %d, baud = %d", __FUNCTION__,
1850 mos7840_port->port->number, baudRate);
1851 //reset clk_uart_sel in spregOffset
1852 if (baudRate > 115200) {
1853#ifdef HW_flow_control
1854 //NOTE: need to see the pther register to modify
1855 //setting h/w flow control bit to 1;
1856 status = 0;
1857 Data = 0x2b;
1858 mos7840_port->shadowMCR = Data;
1859 status =
1860 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
1861 if (status < 0) {
1862 dbg("Writing spreg failed in set_serial_baud\n");
1863 return -1;
1864 }
1865#endif
1866
1867 } else {
1868#ifdef HW_flow_control
1869 //setting h/w flow control bit to 0;
1870 status = 0;
1871 Data = 0xb;
1872 mos7840_port->shadowMCR = Data;
1873 status =
1874 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
1875 if (status < 0) {
1876 dbg("Writing spreg failed in set_serial_baud\n");
1877 return -1;
1878 }
1879#endif
1880
1881 }
1882
1883 if (1) //baudRate <= 115200)
1884 {
1885 clk_sel_val = 0x0;
1886 Data = 0x0;
1887 status = 0;
1888 status =
1889 mos7840_calc_baud_rate_divisor(baudRate, &divisor,
1890 &clk_sel_val);
1891 status =
1892 mos7840_get_reg_sync(port, mos7840_port->SpRegOffset,
1893 &Data);
1894 if (status < 0) {
1895 dbg("reading spreg failed in set_serial_baud\n");
1896 return -1;
1897 }
1898 Data = (Data & 0x8f) | clk_sel_val;
1899 status = 0;
1900 status =
1901 mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
1902 if (status < 0) {
1903 dbg("Writing spreg failed in set_serial_baud\n");
1904 return -1;
1905 }
1906 /* Calculate the Divisor */
1907
1908 if (status) {
1909 err("%s - bad baud rate", __FUNCTION__);
1910 dbg("%s\n", "bad baud rate");
1911 return status;
1912 }
1913 /* Enable access to divisor latch */
1914 Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB;
1915 mos7840_port->shadowLCR = Data;
1916 mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
1917
1918 /* Write the divisor */
1919 Data = (unsigned char)(divisor & 0xff);
1920 dbg("set_serial_baud Value to write DLL is %x\n", Data);
1921 mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data);
1922
1923 Data = (unsigned char)((divisor & 0xff00) >> 8);
1924 dbg("set_serial_baud Value to write DLM is %x\n", Data);
1925 mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data);
1926
1927 /* Disable access to divisor latch */
1928 Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB;
1929 mos7840_port->shadowLCR = Data;
1930 mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
1931
1932 }
1933
1934 return status;
1935}
1936
1937/*****************************************************************************
1938 * mos7840_change_port_settings
1939 * This routine is called to set the UART on the device to match
1940 * the specified new settings.
1941 *****************************************************************************/
1942
1943static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
1944 struct termios *old_termios)
1945{
1946 struct tty_struct *tty;
1947 int baud;
1948 unsigned cflag;
1949 unsigned iflag;
1950 __u8 lData;
1951 __u8 lParity;
1952 __u8 lStop;
1953 int status;
1954 __u16 Data;
1955 struct usb_serial_port *port;
1956 struct usb_serial *serial;
1957
1958 if (mos7840_port == NULL)
1959 return;
1960
1961 port = (struct usb_serial_port *)mos7840_port->port;
1962
1963 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
1964 dbg("%s", "Invalid port \n");
1965 return;
1966 }
1967
1968 if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) {
1969 dbg("%s", "Invalid Serial \n");
1970 return;
1971 }
1972
1973 serial = port->serial;
1974
1975 dbg("%s - port %d", __FUNCTION__, mos7840_port->port->number);
1976
1977 if (!mos7840_port->open) {
1978 dbg("%s - port not opened", __FUNCTION__);
1979 return;
1980 }
1981
1982 tty = mos7840_port->port->tty;
1983
1984 if ((!tty) || (!tty->termios)) {
1985 dbg("%s - no tty structures", __FUNCTION__);
1986 return;
1987 }
1988
1989 dbg("%s", "Entering .......... \n");
1990
1991 lData = LCR_BITS_8;
1992 lStop = LCR_STOP_1;
1993 lParity = LCR_PAR_NONE;
1994
1995 cflag = tty->termios->c_cflag;
1996 iflag = tty->termios->c_iflag;
1997
1998 /* Change the number of bits */
1999 if (cflag & CSIZE) {
2000 switch (cflag & CSIZE) {
2001 case CS5:
2002 lData = LCR_BITS_5;
2003 break;
2004
2005 case CS6:
2006 lData = LCR_BITS_6;
2007 break;
2008
2009 case CS7:
2010 lData = LCR_BITS_7;
2011 break;
2012 default:
2013 case CS8:
2014 lData = LCR_BITS_8;
2015 break;
2016 }
2017 }
2018 /* Change the Parity bit */
2019 if (cflag & PARENB) {
2020 if (cflag & PARODD) {
2021 lParity = LCR_PAR_ODD;
2022 dbg("%s - parity = odd", __FUNCTION__);
2023 } else {
2024 lParity = LCR_PAR_EVEN;
2025 dbg("%s - parity = even", __FUNCTION__);
2026 }
2027
2028 } else {
2029 dbg("%s - parity = none", __FUNCTION__);
2030 }
2031
2032 if (cflag & CMSPAR) {
2033 lParity = lParity | 0x20;
2034 }
2035
2036 /* Change the Stop bit */
2037 if (cflag & CSTOPB) {
2038 lStop = LCR_STOP_2;
2039 dbg("%s - stop bits = 2", __FUNCTION__);
2040 } else {
2041 lStop = LCR_STOP_1;
2042 dbg("%s - stop bits = 1", __FUNCTION__);
2043 }
2044
2045 /* Update the LCR with the correct value */
2046 mos7840_port->shadowLCR &=
2047 ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2048 mos7840_port->shadowLCR |= (lData | lParity | lStop);
2049
2050 dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x\n",
2051 mos7840_port->shadowLCR);
2052 /* Disable Interrupts */
2053 Data = 0x00;
2054 mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
2055
2056 Data = 0x00;
2057 mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
2058
2059 Data = 0xcf;
2060 mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
2061
2062 /* Send the updated LCR value to the mos7840 */
2063 Data = mos7840_port->shadowLCR;
2064
2065 mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
2066
2067 Data = 0x00b;
2068 mos7840_port->shadowMCR = Data;
2069 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
2070 Data = 0x00b;
2071 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
2072
2073 /* set up the MCR register and send it to the mos7840 */
2074
2075 mos7840_port->shadowMCR = MCR_MASTER_IE;
2076 if (cflag & CBAUD) {
2077 mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2078 }
2079
2080 if (cflag & CRTSCTS) {
2081 mos7840_port->shadowMCR |= (MCR_XON_ANY);
2082
2083 } else {
2084 mos7840_port->shadowMCR &= ~(MCR_XON_ANY);
2085 }
2086
2087 Data = mos7840_port->shadowMCR;
2088 mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
2089
2090 /* Determine divisor based on baud rate */
2091 baud = tty_get_baud_rate(tty);
2092
2093 if (!baud) {
2094 /* pick a default, any default... */
2095 dbg("%s\n", "Picked default baud...");
2096 baud = 9600;
2097 }
2098
2099 dbg("%s - baud rate = %d", __FUNCTION__, baud);
2100 status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud);
2101
2102 /* Enable Interrupts */
2103 Data = 0x0c;
2104 mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
2105
2106 if (mos7840_port->read_urb->status != -EINPROGRESS) {
2107 mos7840_port->read_urb->dev = serial->dev;
2108
2109 status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
2110
2111 if (status) {
2112 dbg(" usb_submit_urb(read bulk) failed, status = %d",
2113 status);
2114 }
2115 }
2116 wake_up(&mos7840_port->delta_msr_wait);
2117 mos7840_port->delta_msr_cond = 1;
2118 dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x\n",
2119 mos7840_port->shadowLCR);
2120
2121 return;
2122}
2123
2124/*****************************************************************************
2125 * mos7840_set_termios
2126 * this function is called by the tty driver when it wants to change
2127 * the termios structure
2128 *****************************************************************************/
2129
2130static void mos7840_set_termios(struct usb_serial_port *port,
2131 struct termios *old_termios)
2132{
2133 int status;
2134 unsigned int cflag;
2135 struct usb_serial *serial;
2136 struct moschip_port *mos7840_port;
2137 struct tty_struct *tty;
2138 dbg("mos7840_set_termios: START\n");
2139 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
2140 dbg("%s", "Invalid port \n");
2141 return;
2142 }
2143
2144 serial = port->serial;
2145
2146 if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) {
2147 dbg("%s", "Invalid Serial \n");
2148 return;
2149 }
2150
2151 mos7840_port = mos7840_get_port_private(port);
2152
2153 if (mos7840_port == NULL)
2154 return;
2155
2156 tty = port->tty;
2157
2158 if (!port->tty || !port->tty->termios) {
2159 dbg("%s - no tty or termios", __FUNCTION__);
2160 return;
2161 }
2162
2163 if (!mos7840_port->open) {
2164 dbg("%s - port not opened", __FUNCTION__);
2165 return;
2166 }
2167
2168 dbg("%s\n", "setting termios - ");
2169
2170 cflag = tty->termios->c_cflag;
2171
2172 if (!cflag) {
2173 dbg("%s %s\n", __FUNCTION__, "cflag is NULL");
2174 return;
2175 }
2176
2177 /* check that they really want us to change something */
2178 if (old_termios) {
2179 if ((cflag == old_termios->c_cflag) &&
2180 (RELEVANT_IFLAG(tty->termios->c_iflag) ==
2181 RELEVANT_IFLAG(old_termios->c_iflag))) {
2182 dbg("%s\n", "Nothing to change");
2183 return;
2184 }
2185 }
2186
2187 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2188 tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag));
2189
2190 if (old_termios) {
2191 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2192 old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag));
2193 }
2194
2195 dbg("%s - port %d", __FUNCTION__, port->number);
2196
2197 /* change the port settings to the new ones specified */
2198
2199 mos7840_change_port_settings(mos7840_port, old_termios);
2200
2201 if (!mos7840_port->read_urb) {
2202 dbg("%s", "URB KILLED !!!!!\n");
2203 return;
2204 }
2205
2206 if (mos7840_port->read_urb->status != -EINPROGRESS) {
2207 mos7840_port->read_urb->dev = serial->dev;
2208 status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
2209 if (status) {
2210 dbg(" usb_submit_urb(read bulk) failed, status = %d",
2211 status);
2212 }
2213 }
2214 return;
2215}
2216
2217/*****************************************************************************
2218 * mos7840_get_lsr_info - get line status register info
2219 *
2220 * Purpose: Let user call ioctl() to get info when the UART physically
2221 * is emptied. On bus types like RS485, the transmitter must
2222 * release the bus after transmitting. This must be done when
2223 * the transmit shift register is empty, not be done when the
2224 * transmit holding register is empty. This functionality
2225 * allows an RS485 driver to be written in user space.
2226 *****************************************************************************/
2227
2228static int mos7840_get_lsr_info(struct moschip_port *mos7840_port,
2229 unsigned int *value)
2230{
2231 int count;
2232 unsigned int result = 0;
2233
2234 count = mos7840_chars_in_buffer(mos7840_port->port);
2235 if (count == 0) {
2236 dbg("%s -- Empty", __FUNCTION__);
2237 result = TIOCSER_TEMT;
2238 }
2239
2240 if (copy_to_user(value, &result, sizeof(int)))
2241 return -EFAULT;
2242 return 0;
2243}
2244
2245/*****************************************************************************
2246 * mos7840_get_bytes_avail - get number of bytes available
2247 *
2248 * Purpose: Let user call ioctl to get the count of number of bytes available.
2249 *****************************************************************************/
2250
2251static int mos7840_get_bytes_avail(struct moschip_port *mos7840_port,
2252 unsigned int *value)
2253{
2254 unsigned int result = 0;
2255 struct tty_struct *tty = mos7840_port->port->tty;
2256
2257 if (!tty)
2258 return -ENOIOCTLCMD;
2259
2260 result = tty->read_cnt;
2261
2262 dbg("%s(%d) = %d", __FUNCTION__, mos7840_port->port->number, result);
2263 if (copy_to_user(value, &result, sizeof(int)))
2264 return -EFAULT;
2265
2266 return -ENOIOCTLCMD;
2267}
2268
2269/*****************************************************************************
2270 * mos7840_set_modem_info
2271 * function to set modem info
2272 *****************************************************************************/
2273
2274static int mos7840_set_modem_info(struct moschip_port *mos7840_port,
2275 unsigned int cmd, unsigned int *value)
2276{
2277 unsigned int mcr;
2278 unsigned int arg;
2279 __u16 Data;
2280 int status;
2281 struct usb_serial_port *port;
2282
2283 if (mos7840_port == NULL)
2284 return -1;
2285
2286 port = (struct usb_serial_port *)mos7840_port->port;
2287 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
2288 dbg("%s", "Invalid port \n");
2289 return -1;
2290 }
2291
2292 mcr = mos7840_port->shadowMCR;
2293
2294 if (copy_from_user(&arg, value, sizeof(int)))
2295 return -EFAULT;
2296
2297 switch (cmd) {
2298 case TIOCMBIS:
2299 if (arg & TIOCM_RTS)
2300 mcr |= MCR_RTS;
2301 if (arg & TIOCM_DTR)
2302 mcr |= MCR_RTS;
2303 if (arg & TIOCM_LOOP)
2304 mcr |= MCR_LOOPBACK;
2305 break;
2306
2307 case TIOCMBIC:
2308 if (arg & TIOCM_RTS)
2309 mcr &= ~MCR_RTS;
2310 if (arg & TIOCM_DTR)
2311 mcr &= ~MCR_RTS;
2312 if (arg & TIOCM_LOOP)
2313 mcr &= ~MCR_LOOPBACK;
2314 break;
2315
2316 case TIOCMSET:
2317 /* turn off the RTS and DTR and LOOPBACK
2318 * and then only turn on what was asked to */
2319 mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK);
2320 mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0);
2321 mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0);
2322 mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0);
2323 break;
2324 }
2325
2326 mos7840_port->shadowMCR = mcr;
2327
2328 Data = mos7840_port->shadowMCR;
2329 status = 0;
2330 status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
2331 if (status < 0) {
2332 dbg("setting MODEM_CONTROL_REGISTER Failed\n");
2333 return -1;
2334 }
2335
2336 return 0;
2337}
2338
2339/*****************************************************************************
2340 * mos7840_get_modem_info
2341 * function to get modem info
2342 *****************************************************************************/
2343
2344static int mos7840_get_modem_info(struct moschip_port *mos7840_port,
2345 unsigned int *value)
2346{
2347 unsigned int result = 0;
2348 __u16 msr;
2349 unsigned int mcr = mos7840_port->shadowMCR;
2350 int status = 0;
2351 status =
2352 mos7840_get_uart_reg(mos7840_port->port, MODEM_STATUS_REGISTER,
2353 &msr);
2354 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */
2355 |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */
2356 |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */
2357 |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */
2358 |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */
2359 |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */
2360
2361 dbg("%s -- %x", __FUNCTION__, result);
2362
2363 if (copy_to_user(value, &result, sizeof(int)))
2364 return -EFAULT;
2365 return 0;
2366}
2367
2368/*****************************************************************************
2369 * mos7840_get_serial_info
2370 * function to get information about serial port
2371 *****************************************************************************/
2372
2373static int mos7840_get_serial_info(struct moschip_port *mos7840_port,
2374 struct serial_struct *retinfo)
2375{
2376 struct serial_struct tmp;
2377
2378 if (mos7840_port == NULL)
2379 return -1;
2380
2381 if (!retinfo)
2382 return -EFAULT;
2383
2384 memset(&tmp, 0, sizeof(tmp));
2385
2386 tmp.type = PORT_16550A;
2387 tmp.line = mos7840_port->port->serial->minor;
2388 tmp.port = mos7840_port->port->number;
2389 tmp.irq = 0;
2390 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2391 tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
2392 tmp.baud_base = 9600;
2393 tmp.close_delay = 5 * HZ;
2394 tmp.closing_wait = 30 * HZ;
2395
2396 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2397 return -EFAULT;
2398 return 0;
2399}
2400
2401/*****************************************************************************
2402 * SerialIoctl
2403 * this function handles any ioctl calls to the driver
2404 *****************************************************************************/
2405
2406static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
2407 unsigned int cmd, unsigned long arg)
2408{
2409 struct moschip_port *mos7840_port;
2410 struct tty_struct *tty;
2411
2412 struct async_icount cnow;
2413 struct async_icount cprev;
2414 struct serial_icounter_struct icount;
2415 int mosret = 0;
2416 int retval;
2417 struct tty_ldisc *ld;
2418
2419 if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
2420 dbg("%s", "Invalid port \n");
2421 return -1;
2422 }
2423
2424 mos7840_port = mos7840_get_port_private(port);
2425 tty = mos7840_port->port->tty;
2426
2427 if (mos7840_port == NULL)
2428 return -1;
2429
2430 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2431
2432 switch (cmd) {
2433 /* return number of bytes available */
2434
2435 case TIOCINQ:
2436 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
2437 return mos7840_get_bytes_avail(mos7840_port,
2438 (unsigned int *)arg);
2439 break;
2440
2441 case TIOCOUTQ:
2442 dbg("%s (%d) TIOCOUTQ", __FUNCTION__, port->number);
2443 return put_user(tty->driver->chars_in_buffer ?
2444 tty->driver->chars_in_buffer(tty) : 0,
2445 (int __user *)arg);
2446 break;
2447
2448 case TCFLSH:
2449 retval = tty_check_change(tty);
2450 if (retval)
2451 return retval;
2452
2453 ld = tty_ldisc_ref(tty);
2454 switch (arg) {
2455 case TCIFLUSH:
2456 if (ld && ld->flush_buffer)
2457 ld->flush_buffer(tty);
2458 break;
2459 case TCIOFLUSH:
2460 if (ld && ld->flush_buffer)
2461 ld->flush_buffer(tty);
2462 /* fall through */
2463 case TCOFLUSH:
2464 if (tty->driver->flush_buffer)
2465 tty->driver->flush_buffer(tty);
2466 break;
2467 default:
2468 tty_ldisc_deref(ld);
2469 return -EINVAL;
2470 }
2471 tty_ldisc_deref(ld);
2472 return 0;
2473
2474 case TCGETS:
2475 if (kernel_termios_to_user_termios
2476 ((struct termios __user *)arg, tty->termios))
2477 return -EFAULT;
2478 return 0;
2479
2480 case TIOCSERGETLSR:
2481 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2482 return mos7840_get_lsr_info(mos7840_port, (unsigned int *)arg);
2483 return 0;
2484
2485 case TIOCMBIS:
2486 case TIOCMBIC:
2487 case TIOCMSET:
2488 dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__,
2489 port->number);
2490 mosret =
2491 mos7840_set_modem_info(mos7840_port, cmd,
2492 (unsigned int *)arg);
2493 return mosret;
2494
2495 case TIOCMGET:
2496 dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number);
2497 return mos7840_get_modem_info(mos7840_port,
2498 (unsigned int *)arg);
2499
2500 case TIOCGSERIAL:
2501 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2502 return mos7840_get_serial_info(mos7840_port,
2503 (struct serial_struct *)arg);
2504
2505 case TIOCSSERIAL:
2506 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2507 break;
2508
2509 case TIOCMIWAIT:
2510 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2511 cprev = mos7840_port->icount;
2512 while (1) {
2513 //interruptible_sleep_on(&mos7840_port->delta_msr_wait);
2514 mos7840_port->delta_msr_cond = 0;
2515 wait_event_interruptible(mos7840_port->delta_msr_wait,
2516 (mos7840_port->
2517 delta_msr_cond == 1));
2518
2519 /* see if a signal did it */
2520 if (signal_pending(current))
2521 return -ERESTARTSYS;
2522 cnow = mos7840_port->icount;
2523 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2524 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2525 return -EIO; /* no change => error */
2526 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2527 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2528 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
2529 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2530 return 0;
2531 }
2532 cprev = cnow;
2533 }
2534 /* NOTREACHED */
2535 break;
2536
2537 case TIOCGICOUNT:
2538 cnow = mos7840_port->icount;
2539 icount.cts = cnow.cts;
2540 icount.dsr = cnow.dsr;
2541 icount.rng = cnow.rng;
2542 icount.dcd = cnow.dcd;
2543 icount.rx = cnow.rx;
2544 icount.tx = cnow.tx;
2545 icount.frame = cnow.frame;
2546 icount.overrun = cnow.overrun;
2547 icount.parity = cnow.parity;
2548 icount.brk = cnow.brk;
2549 icount.buf_overrun = cnow.buf_overrun;
2550
2551 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2552 port->number, icount.rx, icount.tx);
2553 if (copy_to_user((void *)arg, &icount, sizeof(icount)))
2554 return -EFAULT;
2555 return 0;
2556
2557 case TIOCEXBAUD:
2558 return 0;
2559 default:
2560 break;
2561 }
2562
2563 return -ENOIOCTLCMD;
2564}
2565
2566static int mos7840_calc_num_ports(struct usb_serial *serial)
2567{
2568
2569 dbg("numberofendpoints: %d \n",
2570 (int)serial->interface->cur_altsetting->desc.bNumEndpoints);
2571 dbg("numberofendpoints: %d \n",
2572 (int)serial->interface->altsetting->desc.bNumEndpoints);
2573 if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) {
2574 mos7840_num_ports = 2;
2575 serial->type->num_ports = 2;
2576 } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) {
2577 mos7840_num_ports = 4;
2578 serial->type->num_bulk_in = 4;
2579 serial->type->num_bulk_out = 4;
2580 serial->type->num_ports = 4;
2581 }
2582
2583 return mos7840_num_ports;
2584}
2585
2586/****************************************************************************
2587 * mos7840_startup
2588 ****************************************************************************/
2589
2590static int mos7840_startup(struct usb_serial *serial)
2591{
2592 struct moschip_port *mos7840_port;
2593 struct usb_device *dev;
2594 int i, status;
2595
2596 __u16 Data;
2597 dbg("%s \n", " mos7840_startup :entering..........");
2598
2599 if (!serial) {
2600 dbg("%s\n", "Invalid Handler");
2601 return -1;
2602 }
2603
2604 dev = serial->dev;
2605
2606 dbg("%s\n", "Entering...");
2607
2608 /* we set up the pointers to the endpoints in the mos7840_open *
2609 * function, as the structures aren't created yet. */
2610
2611 /* set up port private structures */
2612 for (i = 0; i < serial->num_ports; ++i) {
2613 mos7840_port = kmalloc(sizeof(struct moschip_port), GFP_KERNEL);
2614 if (mos7840_port == NULL) {
2615 err("%s - Out of memory", __FUNCTION__);
2616 return -ENOMEM;
2617 }
2618 memset(mos7840_port, 0, sizeof(struct moschip_port));
2619
2620 /* Initialize all port interrupt end point to port 0 int endpoint *
2621 * Our device has only one interrupt end point comman to all port */
2622
2623 mos7840_port->port = serial->port[i];
2624 mos7840_set_port_private(serial->port[i], mos7840_port);
2625
2626 mos7840_port->port_num = ((serial->port[i]->number -
2627 (serial->port[i]->serial->minor)) +
2628 1);
2629
2630 if (mos7840_port->port_num == 1) {
2631 mos7840_port->SpRegOffset = 0x0;
2632 mos7840_port->ControlRegOffset = 0x1;
2633 mos7840_port->DcrRegOffset = 0x4;
2634 } else if ((mos7840_port->port_num == 2)
2635 && (mos7840_num_ports == 4)) {
2636 mos7840_port->SpRegOffset = 0x8;
2637 mos7840_port->ControlRegOffset = 0x9;
2638 mos7840_port->DcrRegOffset = 0x16;
2639 } else if ((mos7840_port->port_num == 2)
2640 && (mos7840_num_ports == 2)) {
2641 mos7840_port->SpRegOffset = 0xa;
2642 mos7840_port->ControlRegOffset = 0xb;
2643 mos7840_port->DcrRegOffset = 0x19;
2644 } else if ((mos7840_port->port_num == 3)
2645 && (mos7840_num_ports == 4)) {
2646 mos7840_port->SpRegOffset = 0xa;
2647 mos7840_port->ControlRegOffset = 0xb;
2648 mos7840_port->DcrRegOffset = 0x19;
2649 } else if ((mos7840_port->port_num == 4)
2650 && (mos7840_num_ports == 4)) {
2651 mos7840_port->SpRegOffset = 0xc;
2652 mos7840_port->ControlRegOffset = 0xd;
2653 mos7840_port->DcrRegOffset = 0x1c;
2654 }
2655 mos7840_dump_serial_port(mos7840_port);
2656
2657 mos7840_set_port_private(serial->port[i], mos7840_port);
2658
2659 //enable rx_disable bit in control register
2660
2661 status =
2662 mos7840_get_reg_sync(serial->port[i],
2663 mos7840_port->ControlRegOffset, &Data);
2664 if (status < 0) {
2665 dbg("Reading ControlReg failed status-0x%x\n", status);
2666 break;
2667 } else
2668 dbg("ControlReg Reading success val is %x, status%d\n",
2669 Data, status);
2670 Data |= 0x08; //setting driver done bit
2671 Data |= 0x04; //sp1_bit to have cts change reflect in modem status reg
2672
2673 //Data |= 0x20; //rx_disable bit
2674 status = 0;
2675 status =
2676 mos7840_set_reg_sync(serial->port[i],
2677 mos7840_port->ControlRegOffset, Data);
2678 if (status < 0) {
2679 dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status);
2680 break;
2681 } else
2682 dbg("ControlReg Writing success(rx_disable) status%d\n",
2683 status);
2684
2685 //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3
2686 Data = 0x01;
2687 status = 0;
2688 status =
2689 mos7840_set_reg_sync(serial->port[i],
2690 (__u16) (mos7840_port->DcrRegOffset +
2691 0), Data);
2692 if (status < 0) {
2693 dbg("Writing DCR0 failed status-0x%x\n", status);
2694 break;
2695 } else
2696 dbg("DCR0 Writing success status%d\n", status);
2697
2698 Data = 0x05;
2699 status = 0;
2700 status =
2701 mos7840_set_reg_sync(serial->port[i],
2702 (__u16) (mos7840_port->DcrRegOffset +
2703 1), Data);
2704 if (status < 0) {
2705 dbg("Writing DCR1 failed status-0x%x\n", status);
2706 break;
2707 } else
2708 dbg("DCR1 Writing success status%d\n", status);
2709
2710 Data = 0x24;
2711 status = 0;
2712 status =
2713 mos7840_set_reg_sync(serial->port[i],
2714 (__u16) (mos7840_port->DcrRegOffset +
2715 2), Data);
2716 if (status < 0) {
2717 dbg("Writing DCR2 failed status-0x%x\n", status);
2718 break;
2719 } else
2720 dbg("DCR2 Writing success status%d\n", status);
2721
2722 // write values in clkstart0x0 and clkmulti 0x20
2723 Data = 0x0;
2724 status = 0;
2725 status =
2726 mos7840_set_reg_sync(serial->port[i],
2727 CLK_START_VALUE_REGISTER, Data);
2728 if (status < 0) {
2729 dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
2730 break;
2731 } else
2732 dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status);
2733
2734 Data = 0x20;
2735 status = 0;
2736 status =
2737 mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER,
2738 Data);
2739 if (status < 0) {
2740 dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n",
2741 status);
2742 break;
2743 } else
2744 dbg("CLK_MULTI_REGISTER Writing success status%d\n",
2745 status);
2746
2747 //write value 0x0 to scratchpad register
2748 Data = 0x00;
2749 status = 0;
2750 status =
2751 mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER,
2752 Data);
2753 if (status < 0) {
2754 dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n",
2755 status);
2756 break;
2757 } else
2758 dbg("SCRATCH_PAD_REGISTER Writing success status%d\n",
2759 status);
2760
2761 //Zero Length flag register
2762 if ((mos7840_port->port_num != 1)
2763 && (mos7840_num_ports == 2)) {
2764
2765 Data = 0xff;
2766 status = 0;
2767 status = mos7840_set_reg_sync(serial->port[i],
2768 (__u16) (ZLP_REG1 +
2769 ((__u16)
2770 mos7840_port->
2771 port_num)),
2772 Data);
2773 dbg("ZLIP offset%x\n",
2774 (__u16) (ZLP_REG1 +
2775 ((__u16) mos7840_port->port_num)));
2776 if (status < 0) {
2777 dbg("Writing ZLP_REG%d failed status-0x%x\n",
2778 i + 2, status);
2779 break;
2780 } else
2781 dbg("ZLP_REG%d Writing success status%d\n",
2782 i + 2, status);
2783 } else {
2784 Data = 0xff;
2785 status = 0;
2786 status = mos7840_set_reg_sync(serial->port[i],
2787 (__u16) (ZLP_REG1 +
2788 ((__u16)
2789 mos7840_port->
2790 port_num) -
2791 0x1), Data);
2792 dbg("ZLIP offset%x\n",
2793 (__u16) (ZLP_REG1 +
2794 ((__u16) mos7840_port->port_num) - 0x1));
2795 if (status < 0) {
2796 dbg("Writing ZLP_REG%d failed status-0x%x\n",
2797 i + 1, status);
2798 break;
2799 } else
2800 dbg("ZLP_REG%d Writing success status%d\n",
2801 i + 1, status);
2802
2803 }
2804 mos7840_port->control_urb = usb_alloc_urb(0, SLAB_ATOMIC);
2805 mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
2806
2807 }
2808
2809 //Zero Length flag enable
2810 Data = 0x0f;
2811 status = 0;
2812 status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data);
2813 if (status < 0) {
2814 dbg("Writing ZLP_REG5 failed status-0x%x\n", status);
2815 return -1;
2816 } else
2817 dbg("ZLP_REG5 Writing success status%d\n", status);
2818
2819 /* setting configuration feature to one */
2820 usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
2821 (__u8) 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 5 * HZ);
2822 return 0;
2823}
2824
2825/****************************************************************************
2826 * mos7840_shutdown
2827 * This function is called whenever the device is removed from the usb bus.
2828 ****************************************************************************/
2829
2830static void mos7840_shutdown(struct usb_serial *serial)
2831{
2832 int i;
2833 struct moschip_port *mos7840_port;
2834 dbg("%s \n", " shutdown :entering..........");
2835
2836 if (!serial) {
2837 dbg("%s", "Invalid Handler \n");
2838 return;
2839 }
2840
2841 /* check for the ports to be closed,close the ports and disconnect */
2842
2843 /* free private structure allocated for serial port *
2844 * stop reads and writes on all ports */
2845
2846 for (i = 0; i < serial->num_ports; ++i) {
2847 mos7840_port = mos7840_get_port_private(serial->port[i]);
2848 kfree(mos7840_port->ctrl_buf);
2849 usb_kill_urb(mos7840_port->control_urb);
2850 kfree(mos7840_port);
2851 mos7840_set_port_private(serial->port[i], NULL);
2852 }
2853
2854 dbg("%s\n", "Thank u :: ");
2855
2856}
2857
2858static struct usb_serial_driver moschip7840_4port_device = {
2859 .driver = {
2860 .owner = THIS_MODULE,
2861 .name = "mos7840",
2862 },
2863 .description = DRIVER_DESC,
2864 .id_table = moschip_port_id_table,
2865 .num_interrupt_in = 1, //NUM_DONT_CARE,//1,
2866#ifdef check
2867 .num_bulk_in = 4,
2868 .num_bulk_out = 4,
2869 .num_ports = 4,
2870#endif
2871 .open = mos7840_open,
2872 .close = mos7840_close,
2873 .write = mos7840_write,
2874 .write_room = mos7840_write_room,
2875 .chars_in_buffer = mos7840_chars_in_buffer,
2876 .throttle = mos7840_throttle,
2877 .unthrottle = mos7840_unthrottle,
2878 .calc_num_ports = mos7840_calc_num_ports,
2879#ifdef MCSSerialProbe
2880 .probe = mos7840_serial_probe,
2881#endif
2882 .ioctl = mos7840_ioctl,
2883 .set_termios = mos7840_set_termios,
2884 .break_ctl = mos7840_break,
2885 .tiocmget = mos7840_tiocmget,
2886 .tiocmset = mos7840_tiocmset,
2887 .attach = mos7840_startup,
2888 .shutdown = mos7840_shutdown,
2889 .read_bulk_callback = mos7840_bulk_in_callback,
2890 .read_int_callback = mos7840_interrupt_callback,
2891};
2892
2893static struct usb_driver io_driver = {
2894 .name = "mos7840",
2895 .probe = usb_serial_probe,
2896 .disconnect = usb_serial_disconnect,
2897 .id_table = moschip_id_table_combined,
2898};
2899
2900/****************************************************************************
2901 * moschip7840_init
2902 * This is called by the module subsystem, or on startup to initialize us
2903 ****************************************************************************/
2904static int __init moschip7840_init(void)
2905{
2906 int retval;
2907
2908 dbg("%s \n", " mos7840_init :entering..........");
2909
2910 /* Register with the usb serial */
2911 retval = usb_serial_register(&moschip7840_4port_device);
2912
2913 if (retval)
2914 goto failed_port_device_register;
2915
2916 dbg("%s\n", "Entring...");
2917 info(DRIVER_DESC " " DRIVER_VERSION);
2918
2919 /* Register with the usb */
2920 retval = usb_register(&io_driver);
2921
2922 if (retval)
2923 goto failed_usb_register;
2924
2925 if (retval == 0) {
2926 dbg("%s\n", "Leaving...");
2927 return 0;
2928 }
2929
2930 failed_usb_register:
2931 usb_serial_deregister(&moschip7840_4port_device);
2932
2933 failed_port_device_register:
2934
2935 return retval;
2936}
2937
2938/****************************************************************************
2939 * moschip7840_exit
2940 * Called when the driver is about to be unloaded.
2941 ****************************************************************************/
2942static void __exit moschip7840_exit(void)
2943{
2944
2945 dbg("%s \n", " mos7840_exit :entering..........");
2946
2947 usb_deregister(&io_driver);
2948
2949 usb_serial_deregister(&moschip7840_4port_device);
2950
2951 dbg("%s\n", "Entring...");
2952}
2953
2954module_init(moschip7840_init);
2955module_exit(moschip7840_exit);
2956
2957/* Module information */
2958MODULE_DESCRIPTION(DRIVER_DESC);
2959MODULE_LICENSE("GPL");
2960
2961module_param(debug, bool, S_IRUGO | S_IWUSR);
2962MODULE_PARM_DESC(debug, "Debug enabled or not");
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 65e4d046951a..1036d436ed23 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -81,10 +81,11 @@ static struct usb_device_id id_table [] = {
81 { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, 81 { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
82 { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, 82 { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
83 { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, 83 { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
84 { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) },
84 { } /* Terminating entry */ 85 { } /* Terminating entry */
85}; 86};
86 87
87MODULE_DEVICE_TABLE (usb, id_table); 88MODULE_DEVICE_TABLE(usb, id_table);
88 89
89static struct usb_driver pl2303_driver = { 90static struct usb_driver pl2303_driver = {
90 .name = "pl2303", 91 .name = "pl2303",
@@ -127,65 +128,6 @@ static struct usb_driver pl2303_driver = {
127#define UART_OVERRUN_ERROR 0x40 128#define UART_OVERRUN_ERROR 0x40
128#define UART_CTS 0x80 129#define UART_CTS 0x80
129 130
130/* function prototypes for a PL2303 serial converter */
131static int pl2303_open (struct usb_serial_port *port, struct file *filp);
132static void pl2303_close (struct usb_serial_port *port, struct file *filp);
133static void pl2303_set_termios (struct usb_serial_port *port,
134 struct termios *old);
135static int pl2303_ioctl (struct usb_serial_port *port, struct file *file,
136 unsigned int cmd, unsigned long arg);
137static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs);
138static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
139static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
140static int pl2303_write (struct usb_serial_port *port,
141 const unsigned char *buf, int count);
142static void pl2303_send (struct usb_serial_port *port);
143static int pl2303_write_room(struct usb_serial_port *port);
144static int pl2303_chars_in_buffer(struct usb_serial_port *port);
145static void pl2303_break_ctl(struct usb_serial_port *port,int break_state);
146static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file);
147static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
148 unsigned int set, unsigned int clear);
149static int pl2303_startup (struct usb_serial *serial);
150static void pl2303_shutdown (struct usb_serial *serial);
151static struct pl2303_buf *pl2303_buf_alloc(unsigned int size);
152static void pl2303_buf_free(struct pl2303_buf *pb);
153static void pl2303_buf_clear(struct pl2303_buf *pb);
154static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb);
155static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb);
156static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf,
157 unsigned int count);
158static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf,
159 unsigned int count);
160
161
162/* All of the device info needed for the PL2303 SIO serial converter */
163static struct usb_serial_driver pl2303_device = {
164 .driver = {
165 .owner = THIS_MODULE,
166 .name = "pl2303",
167 },
168 .id_table = id_table,
169 .num_interrupt_in = NUM_DONT_CARE,
170 .num_bulk_in = 1,
171 .num_bulk_out = 1,
172 .num_ports = 1,
173 .open = pl2303_open,
174 .close = pl2303_close,
175 .write = pl2303_write,
176 .ioctl = pl2303_ioctl,
177 .break_ctl = pl2303_break_ctl,
178 .set_termios = pl2303_set_termios,
179 .tiocmget = pl2303_tiocmget,
180 .tiocmset = pl2303_tiocmset,
181 .read_bulk_callback = pl2303_read_bulk_callback,
182 .read_int_callback = pl2303_read_int_callback,
183 .write_bulk_callback = pl2303_write_bulk_callback,
184 .write_room = pl2303_write_room,
185 .chars_in_buffer = pl2303_chars_in_buffer,
186 .attach = pl2303_startup,
187 .shutdown = pl2303_shutdown,
188};
189 131
190enum pl2303_type { 132enum pl2303_type {
191 type_0, /* don't know the difference between type 0 and */ 133 type_0, /* don't know the difference between type 0 and */
@@ -204,8 +146,166 @@ struct pl2303_private {
204 enum pl2303_type type; 146 enum pl2303_type type;
205}; 147};
206 148
149/*
150 * pl2303_buf_alloc
151 *
152 * Allocate a circular buffer and all associated memory.
153 */
154static struct pl2303_buf *pl2303_buf_alloc(unsigned int size)
155{
156 struct pl2303_buf *pb;
157
158 if (size == 0)
159 return NULL;
160
161 pb = (struct pl2303_buf *)kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL);
162 if (pb == NULL)
163 return NULL;
164
165 pb->buf_buf = kmalloc(size, GFP_KERNEL);
166 if (pb->buf_buf == NULL) {
167 kfree(pb);
168 return NULL;
169 }
170
171 pb->buf_size = size;
172 pb->buf_get = pb->buf_put = pb->buf_buf;
207 173
208static int pl2303_startup (struct usb_serial *serial) 174 return pb;
175}
176
177/*
178 * pl2303_buf_free
179 *
180 * Free the buffer and all associated memory.
181 */
182static void pl2303_buf_free(struct pl2303_buf *pb)
183{
184 if (pb) {
185 kfree(pb->buf_buf);
186 kfree(pb);
187 }
188}
189
190/*
191 * pl2303_buf_clear
192 *
193 * Clear out all data in the circular buffer.
194 */
195static void pl2303_buf_clear(struct pl2303_buf *pb)
196{
197 if (pb != NULL)
198 pb->buf_get = pb->buf_put;
199 /* equivalent to a get of all data available */
200}
201
202/*
203 * pl2303_buf_data_avail
204 *
205 * Return the number of bytes of data available in the circular
206 * buffer.
207 */
208static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb)
209{
210 if (pb == NULL)
211 return 0;
212
213 return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size);
214}
215
216/*
217 * pl2303_buf_space_avail
218 *
219 * Return the number of bytes of space available in the circular
220 * buffer.
221 */
222static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb)
223{
224 if (pb == NULL)
225 return 0;
226
227 return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size);
228}
229
230/*
231 * pl2303_buf_put
232 *
233 * Copy data data from a user buffer and put it into the circular buffer.
234 * Restrict to the amount of space available.
235 *
236 * Return the number of bytes copied.
237 */
238static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf,
239 unsigned int count)
240{
241 unsigned int len;
242
243 if (pb == NULL)
244 return 0;
245
246 len = pl2303_buf_space_avail(pb);
247 if (count > len)
248 count = len;
249
250 if (count == 0)
251 return 0;
252
253 len = pb->buf_buf + pb->buf_size - pb->buf_put;
254 if (count > len) {
255 memcpy(pb->buf_put, buf, len);
256 memcpy(pb->buf_buf, buf+len, count - len);
257 pb->buf_put = pb->buf_buf + count - len;
258 } else {
259 memcpy(pb->buf_put, buf, count);
260 if (count < len)
261 pb->buf_put += count;
262 else /* count == len */
263 pb->buf_put = pb->buf_buf;
264 }
265
266 return count;
267}
268
269/*
270 * pl2303_buf_get
271 *
272 * Get data from the circular buffer and copy to the given buffer.
273 * Restrict to the amount of data available.
274 *
275 * Return the number of bytes copied.
276 */
277static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf,
278 unsigned int count)
279{
280 unsigned int len;
281
282 if (pb == NULL)
283 return 0;
284
285 len = pl2303_buf_data_avail(pb);
286 if (count > len)
287 count = len;
288
289 if (count == 0)
290 return 0;
291
292 len = pb->buf_buf + pb->buf_size - pb->buf_get;
293 if (count > len) {
294 memcpy(buf, pb->buf_get, len);
295 memcpy(buf+len, pb->buf_buf, count - len);
296 pb->buf_get = pb->buf_buf + count - len;
297 } else {
298 memcpy(buf, pb->buf_get, count);
299 if (count < len)
300 pb->buf_get += count;
301 else /* count == len */
302 pb->buf_get = pb->buf_buf;
303 }
304
305 return count;
306}
307
308static int pl2303_startup(struct usb_serial *serial)
209{ 309{
210 struct pl2303_private *priv; 310 struct pl2303_private *priv;
211 enum pl2303_type type = type_0; 311 enum pl2303_type type = type_0;
@@ -247,36 +347,17 @@ cleanup:
247 return -ENOMEM; 347 return -ENOMEM;
248} 348}
249 349
250static int set_control_lines (struct usb_device *dev, u8 value) 350static int set_control_lines(struct usb_device *dev, u8 value)
251{ 351{
252 int retval; 352 int retval;
253 353
254 retval = usb_control_msg (dev, usb_sndctrlpipe (dev, 0), 354 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
255 SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, 355 SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
256 value, 0, NULL, 0, 100); 356 value, 0, NULL, 0, 100);
257 dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); 357 dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval);
258 return retval; 358 return retval;
259} 359}
260 360
261static int pl2303_write (struct usb_serial_port *port, const unsigned char *buf, int count)
262{
263 struct pl2303_private *priv = usb_get_serial_port_data(port);
264 unsigned long flags;
265
266 dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count);
267
268 if (!count)
269 return count;
270
271 spin_lock_irqsave(&priv->lock, flags);
272 count = pl2303_buf_put(priv->buf, buf, count);
273 spin_unlock_irqrestore(&priv->lock, flags);
274
275 pl2303_send(port);
276
277 return count;
278}
279
280static void pl2303_send(struct usb_serial_port *port) 361static void pl2303_send(struct usb_serial_port *port)
281{ 362{
282 int count, result; 363 int count, result;
@@ -293,7 +374,7 @@ static void pl2303_send(struct usb_serial_port *port)
293 } 374 }
294 375
295 count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, 376 count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer,
296 port->bulk_out_size); 377 port->bulk_out_size);
297 378
298 if (count == 0) { 379 if (count == 0) {
299 spin_unlock_irqrestore(&priv->lock, flags); 380 spin_unlock_irqrestore(&priv->lock, flags);
@@ -304,13 +385,15 @@ static void pl2303_send(struct usb_serial_port *port)
304 385
305 spin_unlock_irqrestore(&priv->lock, flags); 386 spin_unlock_irqrestore(&priv->lock, flags);
306 387
307 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer); 388 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count,
389 port->write_urb->transfer_buffer);
308 390
309 port->write_urb->transfer_buffer_length = count; 391 port->write_urb->transfer_buffer_length = count;
310 port->write_urb->dev = port->serial->dev; 392 port->write_urb->dev = port->serial->dev;
311 result = usb_submit_urb (port->write_urb, GFP_ATOMIC); 393 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
312 if (result) { 394 if (result) {
313 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result); 395 dev_err(&port->dev, "%s - failed submitting write urb,"
396 " error %d\n", __FUNCTION__, result);
314 priv->write_urb_in_use = 0; 397 priv->write_urb_in_use = 0;
315 // TODO: reschedule pl2303_send 398 // TODO: reschedule pl2303_send
316 } 399 }
@@ -318,6 +401,26 @@ static void pl2303_send(struct usb_serial_port *port)
318 usb_serial_port_softint(port); 401 usb_serial_port_softint(port);
319} 402}
320 403
404static int pl2303_write(struct usb_serial_port *port, const unsigned char *buf,
405 int count)
406{
407 struct pl2303_private *priv = usb_get_serial_port_data(port);
408 unsigned long flags;
409
410 dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count);
411
412 if (!count)
413 return count;
414
415 spin_lock_irqsave(&priv->lock, flags);
416 count = pl2303_buf_put(priv->buf, buf, count);
417 spin_unlock_irqrestore(&priv->lock, flags);
418
419 pl2303_send(port);
420
421 return count;
422}
423
321static int pl2303_write_room(struct usb_serial_port *port) 424static int pl2303_write_room(struct usb_serial_port *port)
322{ 425{
323 struct pl2303_private *priv = usb_get_serial_port_data(port); 426 struct pl2303_private *priv = usb_get_serial_port_data(port);
@@ -350,7 +453,8 @@ static int pl2303_chars_in_buffer(struct usb_serial_port *port)
350 return chars; 453 return chars;
351} 454}
352 455
353static void pl2303_set_termios (struct usb_serial_port *port, struct termios *old_termios) 456static void pl2303_set_termios(struct usb_serial_port *port,
457 struct termios *old_termios)
354{ 458{
355 struct usb_serial *serial = port->serial; 459 struct usb_serial *serial = port->serial;
356 struct pl2303_private *priv = usb_get_serial_port_data(port); 460 struct pl2303_private *priv = usb_get_serial_port_data(port);
@@ -371,7 +475,8 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
371 spin_lock_irqsave(&priv->lock, flags); 475 spin_lock_irqsave(&priv->lock, flags);
372 if (!priv->termios_initialized) { 476 if (!priv->termios_initialized) {
373 *(port->tty->termios) = tty_std_termios; 477 *(port->tty->termios) = tty_std_termios;
374 port->tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; 478 port->tty->termios->c_cflag = B9600 | CS8 | CREAD |
479 HUPCL | CLOCAL;
375 priv->termios_initialized = 1; 480 priv->termios_initialized = 1;
376 } 481 }
377 spin_unlock_irqrestore(&priv->lock, flags); 482 spin_unlock_irqrestore(&priv->lock, flags);
@@ -380,24 +485,24 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
380 /* check that they really want us to change something */ 485 /* check that they really want us to change something */
381 if (old_termios) { 486 if (old_termios) {
382 if ((cflag == old_termios->c_cflag) && 487 if ((cflag == old_termios->c_cflag) &&
383 (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) { 488 (RELEVANT_IFLAG(port->tty->termios->c_iflag) ==
384 dbg("%s - nothing to change...", __FUNCTION__); 489 RELEVANT_IFLAG(old_termios->c_iflag))) {
385 return; 490 dbg("%s - nothing to change...", __FUNCTION__);
491 return;
386 } 492 }
387 } 493 }
388 494
389 buf = kzalloc (7, GFP_KERNEL); 495 buf = kzalloc(7, GFP_KERNEL);
390 if (!buf) { 496 if (!buf) {
391 dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); 497 dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__);
392 return; 498 return;
393 } 499 }
394
395 i = usb_control_msg (serial->dev, usb_rcvctrlpipe (serial->dev, 0),
396 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
397 0, 0, buf, 7, 100);
398 dbg ("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i,
399 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
400 500
501 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
502 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
503 0, 0, buf, 7, 100);
504 dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i,
505 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
401 506
402 if (cflag & CSIZE) { 507 if (cflag & CSIZE) {
403 switch (cflag & CSIZE) { 508 switch (cflag & CSIZE) {
@@ -429,7 +534,8 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
429 case B230400: baud = 230400; break; 534 case B230400: baud = 230400; break;
430 case B460800: baud = 460800; break; 535 case B460800: baud = 460800; break;
431 default: 536 default:
432 dev_err(&port->dev, "pl2303 driver does not support the baudrate requested (fix it)\n"); 537 dev_err(&port->dev, "pl2303 driver does not support"
538 " the baudrate requested (fix it)\n");
433 break; 539 break;
434 } 540 }
435 dbg("%s - baud = %d", __FUNCTION__, baud); 541 dbg("%s - baud = %d", __FUNCTION__, baud);
@@ -469,10 +575,10 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
469 dbg("%s - parity = none", __FUNCTION__); 575 dbg("%s - parity = none", __FUNCTION__);
470 } 576 }
471 577
472 i = usb_control_msg (serial->dev, usb_sndctrlpipe (serial->dev, 0), 578 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
473 SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, 579 SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
474 0, 0, buf, 7, 100); 580 0, 0, buf, 7, 100);
475 dbg ("0x21:0x20:0:0 %d", i); 581 dbg("0x21:0x20:0:0 %d", i);
476 582
477 /* change control lines if we are switching to or from B0 */ 583 /* change control lines if we are switching to or from B0 */
478 spin_lock_irqsave(&priv->lock, flags); 584 spin_lock_irqsave(&priv->lock, flags);
@@ -488,13 +594,13 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
488 } else { 594 } else {
489 spin_unlock_irqrestore(&priv->lock, flags); 595 spin_unlock_irqrestore(&priv->lock, flags);
490 } 596 }
491 597
492 buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; 598 buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
493 599
494 i = usb_control_msg (serial->dev, usb_rcvctrlpipe (serial->dev, 0), 600 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
495 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 601 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
496 0, 0, buf, 7, 100); 602 0, 0, buf, 7, 100);
497 dbg ("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, 603 dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i,
498 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); 604 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
499 605
500 if (cflag & CRTSCTS) { 606 if (cflag & CRTSCTS) {
@@ -503,18 +609,82 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
503 index = 0x61; 609 index = 0x61;
504 else 610 else
505 index = 0x41; 611 index = 0x41;
506 i = usb_control_msg(serial->dev, 612 i = usb_control_msg(serial->dev,
507 usb_sndctrlpipe(serial->dev, 0), 613 usb_sndctrlpipe(serial->dev, 0),
508 VENDOR_WRITE_REQUEST, 614 VENDOR_WRITE_REQUEST,
509 VENDOR_WRITE_REQUEST_TYPE, 615 VENDOR_WRITE_REQUEST_TYPE,
510 0x0, index, NULL, 0, 100); 616 0x0, index, NULL, 0, 100);
511 dbg ("0x40:0x1:0x0:0x%x %d", index, i); 617 dbg("0x40:0x1:0x0:0x%x %d", index, i);
618 }
619
620 kfree(buf);
621}
622
623static void pl2303_close(struct usb_serial_port *port, struct file *filp)
624{
625 struct pl2303_private *priv = usb_get_serial_port_data(port);
626 unsigned long flags;
627 unsigned int c_cflag;
628 int bps;
629 long timeout;
630 wait_queue_t wait;
631
632 dbg("%s - port %d", __FUNCTION__, port->number);
633
634 /* wait for data to drain from the buffer */
635 spin_lock_irqsave(&priv->lock, flags);
636 timeout = PL2303_CLOSING_WAIT;
637 init_waitqueue_entry(&wait, current);
638 add_wait_queue(&port->tty->write_wait, &wait);
639 for (;;) {
640 set_current_state(TASK_INTERRUPTIBLE);
641 if (pl2303_buf_data_avail(priv->buf) == 0 ||
642 timeout == 0 || signal_pending(current) ||
643 !usb_get_intfdata(port->serial->interface)) /* disconnect */
644 break;
645 spin_unlock_irqrestore(&priv->lock, flags);
646 timeout = schedule_timeout(timeout);
647 spin_lock_irqsave(&priv->lock, flags);
512 } 648 }
649 set_current_state(TASK_RUNNING);
650 remove_wait_queue(&port->tty->write_wait, &wait);
651 /* clear out any remaining data in the buffer */
652 pl2303_buf_clear(priv->buf);
653 spin_unlock_irqrestore(&priv->lock, flags);
654
655 /* wait for characters to drain from the device */
656 /* (this is long enough for the entire 256 byte */
657 /* pl2303 hardware buffer to drain with no flow */
658 /* control for data rates of 1200 bps or more, */
659 /* for lower rates we should really know how much */
660 /* data is in the buffer to compute a delay */
661 /* that is not unnecessarily long) */
662 bps = tty_get_baud_rate(port->tty);
663 if (bps > 1200)
664 timeout = max((HZ*2560)/bps,HZ/10);
665 else
666 timeout = 2*HZ;
667 schedule_timeout_interruptible(timeout);
513 668
514 kfree (buf); 669 /* shutdown our urbs */
670 dbg("%s - shutting down urbs", __FUNCTION__);
671 usb_kill_urb(port->write_urb);
672 usb_kill_urb(port->read_urb);
673 usb_kill_urb(port->interrupt_in_urb);
674
675 if (port->tty) {
676 c_cflag = port->tty->termios->c_cflag;
677 if (c_cflag & HUPCL) {
678 /* drop DTR and RTS */
679 spin_lock_irqsave(&priv->lock, flags);
680 priv->line_control = 0;
681 spin_unlock_irqrestore(&priv->lock, flags);
682 set_control_lines(port->serial->dev, 0);
683 }
684 }
515} 685}
516 686
517static int pl2303_open (struct usb_serial_port *port, struct file *filp) 687static int pl2303_open(struct usb_serial_port *port, struct file *filp)
518{ 688{
519 struct termios tmp_termios; 689 struct termios tmp_termios;
520 struct usb_serial *serial = port->serial; 690 struct usb_serial *serial = port->serial;
@@ -568,98 +738,35 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
568 738
569 /* Setup termios */ 739 /* Setup termios */
570 if (port->tty) { 740 if (port->tty) {
571 pl2303_set_termios (port, &tmp_termios); 741 pl2303_set_termios(port, &tmp_termios);
572 } 742 }
573 743
574 //FIXME: need to assert RTS and DTR if CRTSCTS off 744 //FIXME: need to assert RTS and DTR if CRTSCTS off
575 745
576 dbg("%s - submitting read urb", __FUNCTION__); 746 dbg("%s - submitting read urb", __FUNCTION__);
577 port->read_urb->dev = serial->dev; 747 port->read_urb->dev = serial->dev;
578 result = usb_submit_urb (port->read_urb, GFP_KERNEL); 748 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
579 if (result) { 749 if (result) {
580 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); 750 dev_err(&port->dev, "%s - failed submitting read urb,"
581 pl2303_close (port, NULL); 751 " error %d\n", __FUNCTION__, result);
752 pl2303_close(port, NULL);
582 return -EPROTO; 753 return -EPROTO;
583 } 754 }
584 755
585 dbg("%s - submitting interrupt urb", __FUNCTION__); 756 dbg("%s - submitting interrupt urb", __FUNCTION__);
586 port->interrupt_in_urb->dev = serial->dev; 757 port->interrupt_in_urb->dev = serial->dev;
587 result = usb_submit_urb (port->interrupt_in_urb, GFP_KERNEL); 758 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
588 if (result) { 759 if (result) {
589 dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n", __FUNCTION__, result); 760 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
590 pl2303_close (port, NULL); 761 " error %d\n", __FUNCTION__, result);
762 pl2303_close(port, NULL);
591 return -EPROTO; 763 return -EPROTO;
592 } 764 }
593 return 0; 765 return 0;
594} 766}
595 767
596 768static int pl2303_tiocmset(struct usb_serial_port *port, struct file *file,
597static void pl2303_close (struct usb_serial_port *port, struct file *filp) 769 unsigned int set, unsigned int clear)
598{
599 struct pl2303_private *priv = usb_get_serial_port_data(port);
600 unsigned long flags;
601 unsigned int c_cflag;
602 int bps;
603 long timeout;
604 wait_queue_t wait;
605
606 dbg("%s - port %d", __FUNCTION__, port->number);
607
608 /* wait for data to drain from the buffer */
609 spin_lock_irqsave(&priv->lock, flags);
610 timeout = PL2303_CLOSING_WAIT;
611 init_waitqueue_entry(&wait, current);
612 add_wait_queue(&port->tty->write_wait, &wait);
613 for (;;) {
614 set_current_state(TASK_INTERRUPTIBLE);
615 if (pl2303_buf_data_avail(priv->buf) == 0
616 || timeout == 0 || signal_pending(current)
617 || !usb_get_intfdata(port->serial->interface)) /* disconnect */
618 break;
619 spin_unlock_irqrestore(&priv->lock, flags);
620 timeout = schedule_timeout(timeout);
621 spin_lock_irqsave(&priv->lock, flags);
622 }
623 set_current_state(TASK_RUNNING);
624 remove_wait_queue(&port->tty->write_wait, &wait);
625 /* clear out any remaining data in the buffer */
626 pl2303_buf_clear(priv->buf);
627 spin_unlock_irqrestore(&priv->lock, flags);
628
629 /* wait for characters to drain from the device */
630 /* (this is long enough for the entire 256 byte */
631 /* pl2303 hardware buffer to drain with no flow */
632 /* control for data rates of 1200 bps or more, */
633 /* for lower rates we should really know how much */
634 /* data is in the buffer to compute a delay */
635 /* that is not unnecessarily long) */
636 bps = tty_get_baud_rate(port->tty);
637 if (bps > 1200)
638 timeout = max((HZ*2560)/bps,HZ/10);
639 else
640 timeout = 2*HZ;
641 schedule_timeout_interruptible(timeout);
642
643 /* shutdown our urbs */
644 dbg("%s - shutting down urbs", __FUNCTION__);
645 usb_kill_urb(port->write_urb);
646 usb_kill_urb(port->read_urb);
647 usb_kill_urb(port->interrupt_in_urb);
648
649 if (port->tty) {
650 c_cflag = port->tty->termios->c_cflag;
651 if (c_cflag & HUPCL) {
652 /* drop DTR and RTS */
653 spin_lock_irqsave(&priv->lock, flags);
654 priv->line_control = 0;
655 spin_unlock_irqrestore (&priv->lock, flags);
656 set_control_lines (port->serial->dev, 0);
657 }
658 }
659}
660
661static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
662 unsigned int set, unsigned int clear)
663{ 770{
664 struct pl2303_private *priv = usb_get_serial_port_data(port); 771 struct pl2303_private *priv = usb_get_serial_port_data(port);
665 unsigned long flags; 772 unsigned long flags;
@@ -668,7 +775,7 @@ static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
668 if (!usb_get_intfdata(port->serial->interface)) 775 if (!usb_get_intfdata(port->serial->interface))
669 return -ENODEV; 776 return -ENODEV;
670 777
671 spin_lock_irqsave (&priv->lock, flags); 778 spin_lock_irqsave(&priv->lock, flags);
672 if (set & TIOCM_RTS) 779 if (set & TIOCM_RTS)
673 priv->line_control |= CONTROL_RTS; 780 priv->line_control |= CONTROL_RTS;
674 if (set & TIOCM_DTR) 781 if (set & TIOCM_DTR)
@@ -678,12 +785,12 @@ static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file,
678 if (clear & TIOCM_DTR) 785 if (clear & TIOCM_DTR)
679 priv->line_control &= ~CONTROL_DTR; 786 priv->line_control &= ~CONTROL_DTR;
680 control = priv->line_control; 787 control = priv->line_control;
681 spin_unlock_irqrestore (&priv->lock, flags); 788 spin_unlock_irqrestore(&priv->lock, flags);
682 789
683 return set_control_lines (port->serial->dev, control); 790 return set_control_lines(port->serial->dev, control);
684} 791}
685 792
686static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file) 793static int pl2303_tiocmget(struct usb_serial_port *port, struct file *file)
687{ 794{
688 struct pl2303_private *priv = usb_get_serial_port_data(port); 795 struct pl2303_private *priv = usb_get_serial_port_data(port);
689 unsigned long flags; 796 unsigned long flags;
@@ -696,10 +803,10 @@ static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file)
696 if (!usb_get_intfdata(port->serial->interface)) 803 if (!usb_get_intfdata(port->serial->interface))
697 return -ENODEV; 804 return -ENODEV;
698 805
699 spin_lock_irqsave (&priv->lock, flags); 806 spin_lock_irqsave(&priv->lock, flags);
700 mcr = priv->line_control; 807 mcr = priv->line_control;
701 status = priv->line_status; 808 status = priv->line_status;
702 spin_unlock_irqrestore (&priv->lock, flags); 809 spin_unlock_irqrestore(&priv->lock, flags);
703 810
704 result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) 811 result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
705 | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) 812 | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
@@ -721,22 +828,22 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
721 unsigned int status; 828 unsigned int status;
722 unsigned int changed; 829 unsigned int changed;
723 830
724 spin_lock_irqsave (&priv->lock, flags); 831 spin_lock_irqsave(&priv->lock, flags);
725 prevstatus = priv->line_status; 832 prevstatus = priv->line_status;
726 spin_unlock_irqrestore (&priv->lock, flags); 833 spin_unlock_irqrestore(&priv->lock, flags);
727 834
728 while (1) { 835 while (1) {
729 interruptible_sleep_on(&priv->delta_msr_wait); 836 interruptible_sleep_on(&priv->delta_msr_wait);
730 /* see if a signal did it */ 837 /* see if a signal did it */
731 if (signal_pending(current)) 838 if (signal_pending(current))
732 return -ERESTARTSYS; 839 return -ERESTARTSYS;
733 840
734 spin_lock_irqsave (&priv->lock, flags); 841 spin_lock_irqsave(&priv->lock, flags);
735 status = priv->line_status; 842 status = priv->line_status;
736 spin_unlock_irqrestore (&priv->lock, flags); 843 spin_unlock_irqrestore(&priv->lock, flags);
737 844
738 changed=prevstatus^status; 845 changed=prevstatus^status;
739 846
740 if (((arg & TIOCM_RNG) && (changed & UART_RING)) || 847 if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
741 ((arg & TIOCM_DSR) && (changed & UART_DSR)) || 848 ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
742 ((arg & TIOCM_CD) && (changed & UART_DCD)) || 849 ((arg & TIOCM_CD) && (changed & UART_DCD)) ||
@@ -749,7 +856,8 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
749 return 0; 856 return 0;
750} 857}
751 858
752static int pl2303_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) 859static int pl2303_ioctl(struct usb_serial_port *port, struct file *file,
860 unsigned int cmd, unsigned long arg)
753{ 861{
754 dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); 862 dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd);
755 863
@@ -766,7 +874,7 @@ static int pl2303_ioctl (struct usb_serial_port *port, struct file *file, unsign
766 return -ENOIOCTLCMD; 874 return -ENOIOCTLCMD;
767} 875}
768 876
769static void pl2303_break_ctl (struct usb_serial_port *port, int break_state) 877static void pl2303_break_ctl(struct usb_serial_port *port, int break_state)
770{ 878{
771 struct usb_serial *serial = port->serial; 879 struct usb_serial *serial = port->serial;
772 u16 state; 880 u16 state;
@@ -780,15 +888,14 @@ static void pl2303_break_ctl (struct usb_serial_port *port, int break_state)
780 state = BREAK_ON; 888 state = BREAK_ON;
781 dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); 889 dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on");
782 890
783 result = usb_control_msg (serial->dev, usb_sndctrlpipe (serial->dev, 0), 891 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
784 BREAK_REQUEST, BREAK_REQUEST_TYPE, state, 892 BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
785 0, NULL, 0, 100); 893 0, NULL, 0, 100);
786 if (result) 894 if (result)
787 dbg("%s - error sending break = %d", __FUNCTION__, result); 895 dbg("%s - error sending break = %d", __FUNCTION__, result);
788} 896}
789 897
790 898static void pl2303_shutdown(struct usb_serial *serial)
791static void pl2303_shutdown (struct usb_serial *serial)
792{ 899{
793 int i; 900 int i;
794 struct pl2303_private *priv; 901 struct pl2303_private *priv;
@@ -802,7 +909,7 @@ static void pl2303_shutdown (struct usb_serial *serial)
802 kfree(priv); 909 kfree(priv);
803 usb_set_serial_port_data(serial->port[i], NULL); 910 usb_set_serial_port_data(serial->port[i], NULL);
804 } 911 }
805 } 912 }
806} 913}
807 914
808static void pl2303_update_line_status(struct usb_serial_port *port, 915static void pl2303_update_line_status(struct usb_serial_port *port,
@@ -814,29 +921,33 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
814 unsigned long flags; 921 unsigned long flags;
815 u8 status_idx = UART_STATE; 922 u8 status_idx = UART_STATE;
816 u8 length = UART_STATE + 1; 923 u8 length = UART_STATE + 1;
924 u16 idv, idp;
925
926 idv = le16_to_cpu(port->serial->dev->descriptor.idVendor);
927 idp = le16_to_cpu(port->serial->dev->descriptor.idProduct);
817 928
818 if ((le16_to_cpu(port->serial->dev->descriptor.idVendor) == SIEMENS_VENDOR_ID) && 929
819 (le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X65 || 930 if (idv == SIEMENS_VENDOR_ID) {
820 le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_SX1 || 931 if (idp == SIEMENS_PRODUCT_ID_X65 ||
821 le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X75)) { 932 idp == SIEMENS_PRODUCT_ID_SX1 ||
822 length = 1; 933 idp == SIEMENS_PRODUCT_ID_X75) {
823 status_idx = 0; 934
935 length = 1;
936 status_idx = 0;
937 }
824 } 938 }
825 939
826 if (actual_length < length) 940 if (actual_length < length)
827 goto exit; 941 return;
828 942
829 /* Save off the uart status for others to look at */ 943 /* Save off the uart status for others to look at */
830 spin_lock_irqsave(&priv->lock, flags); 944 spin_lock_irqsave(&priv->lock, flags);
831 priv->line_status = data[status_idx]; 945 priv->line_status = data[status_idx];
832 spin_unlock_irqrestore(&priv->lock, flags); 946 spin_unlock_irqrestore(&priv->lock, flags);
833 wake_up_interruptible (&priv->delta_msr_wait); 947 wake_up_interruptible(&priv->delta_msr_wait);
834
835exit:
836 return;
837} 948}
838 949
839static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs) 950static void pl2303_read_int_callback(struct urb *urb, struct pt_regs *regs)
840{ 951{
841 struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 952 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
842 unsigned char *data = urb->transfer_buffer; 953 unsigned char *data = urb->transfer_buffer;
@@ -853,25 +964,29 @@ static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs)
853 case -ENOENT: 964 case -ENOENT:
854 case -ESHUTDOWN: 965 case -ESHUTDOWN:
855 /* this urb is terminated, clean up */ 966 /* this urb is terminated, clean up */
856 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); 967 dbg("%s - urb shutting down with status: %d", __FUNCTION__,
968 urb->status);
857 return; 969 return;
858 default: 970 default:
859 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); 971 dbg("%s - nonzero urb status received: %d", __FUNCTION__,
972 urb->status);
860 goto exit; 973 goto exit;
861 } 974 }
862 975
863 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, urb->transfer_buffer); 976 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
977 urb->actual_length, urb->transfer_buffer);
978
864 pl2303_update_line_status(port, data, actual_length); 979 pl2303_update_line_status(port, data, actual_length);
865 980
866exit: 981exit:
867 status = usb_submit_urb (urb, GFP_ATOMIC); 982 status = usb_submit_urb(urb, GFP_ATOMIC);
868 if (status) 983 if (status)
869 dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", 984 dev_err(&urb->dev->dev,
985 "%s - usb_submit_urb failed with result %d\n",
870 __FUNCTION__, status); 986 __FUNCTION__, status);
871} 987}
872 988
873 989static void pl2303_read_bulk_callback(struct urb *urb, struct pt_regs *regs)
874static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
875{ 990{
876 struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 991 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
877 struct pl2303_private *priv = usb_get_serial_port_data(port); 992 struct pl2303_private *priv = usb_get_serial_port_data(port);
@@ -892,20 +1007,25 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
892 return; 1007 return;
893 } 1008 }
894 if (urb->status == -EPROTO) { 1009 if (urb->status == -EPROTO) {
895 /* PL2303 mysteriously fails with -EPROTO reschedule the read */ 1010 /* PL2303 mysteriously fails with -EPROTO reschedule
896 dbg("%s - caught -EPROTO, resubmitting the urb", __FUNCTION__); 1011 * the read */
1012 dbg("%s - caught -EPROTO, resubmitting the urb",
1013 __FUNCTION__);
897 urb->status = 0; 1014 urb->status = 0;
898 urb->dev = port->serial->dev; 1015 urb->dev = port->serial->dev;
899 result = usb_submit_urb(urb, GFP_ATOMIC); 1016 result = usb_submit_urb(urb, GFP_ATOMIC);
900 if (result) 1017 if (result)
901 dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result); 1018 dev_err(&urb->dev->dev, "%s - failed"
1019 " resubmitting read urb, error %d\n",
1020 __FUNCTION__, result);
902 return; 1021 return;
903 } 1022 }
904 dbg("%s - unable to handle the error, exiting.", __FUNCTION__); 1023 dbg("%s - unable to handle the error, exiting.", __FUNCTION__);
905 return; 1024 return;
906 } 1025 }
907 1026
908 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); 1027 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
1028 urb->actual_length, data);
909 1029
910 /* get tty_flag from status */ 1030 /* get tty_flag from status */
911 tty_flag = TTY_NORMAL; 1031 tty_flag = TTY_NORMAL;
@@ -914,7 +1034,7 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
914 status = priv->line_status; 1034 status = priv->line_status;
915 priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 1035 priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
916 spin_unlock_irqrestore(&priv->lock, flags); 1036 spin_unlock_irqrestore(&priv->lock, flags);
917 wake_up_interruptible (&priv->delta_msr_wait); 1037 wake_up_interruptible(&priv->delta_msr_wait);
918 1038
919 /* break takes precedence over parity, */ 1039 /* break takes precedence over parity, */
920 /* which takes precedence over framing errors */ 1040 /* which takes precedence over framing errors */
@@ -933,8 +1053,8 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
933 if (status & UART_OVERRUN_ERROR) 1053 if (status & UART_OVERRUN_ERROR)
934 tty_insert_flip_char(tty, 0, TTY_OVERRUN); 1054 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
935 for (i = 0; i < urb->actual_length; ++i) 1055 for (i = 0; i < urb->actual_length; ++i)
936 tty_insert_flip_char (tty, data[i], tty_flag); 1056 tty_insert_flip_char(tty, data[i], tty_flag);
937 tty_flip_buffer_push (tty); 1057 tty_flip_buffer_push(tty);
938 } 1058 }
939 1059
940 /* Schedule the next read _if_ we are still open */ 1060 /* Schedule the next read _if_ we are still open */
@@ -942,15 +1062,14 @@ static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
942 urb->dev = port->serial->dev; 1062 urb->dev = port->serial->dev;
943 result = usb_submit_urb(urb, GFP_ATOMIC); 1063 result = usb_submit_urb(urb, GFP_ATOMIC);
944 if (result) 1064 if (result)
945 dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result); 1065 dev_err(&urb->dev->dev, "%s - failed resubmitting"
1066 " read urb, error %d\n", __FUNCTION__, result);
946 } 1067 }
947 1068
948 return; 1069 return;
949} 1070}
950 1071
951 1072static void pl2303_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
952
953static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
954{ 1073{
955 struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 1074 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
956 struct pl2303_private *priv = usb_get_serial_port_data(port); 1075 struct pl2303_private *priv = usb_get_serial_port_data(port);
@@ -966,18 +1085,21 @@ static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
966 case -ENOENT: 1085 case -ENOENT:
967 case -ESHUTDOWN: 1086 case -ESHUTDOWN:
968 /* this urb is terminated, clean up */ 1087 /* this urb is terminated, clean up */
969 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); 1088 dbg("%s - urb shutting down with status: %d", __FUNCTION__,
1089 urb->status);
970 priv->write_urb_in_use = 0; 1090 priv->write_urb_in_use = 0;
971 return; 1091 return;
972 default: 1092 default:
973 /* error in the urb, so we have to resubmit it */ 1093 /* error in the urb, so we have to resubmit it */
974 dbg("%s - Overflow in write", __FUNCTION__); 1094 dbg("%s - Overflow in write", __FUNCTION__);
975 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); 1095 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__,
1096 urb->status);
976 port->write_urb->transfer_buffer_length = 1; 1097 port->write_urb->transfer_buffer_length = 1;
977 port->write_urb->dev = port->serial->dev; 1098 port->write_urb->dev = port->serial->dev;
978 result = usb_submit_urb (port->write_urb, GFP_ATOMIC); 1099 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
979 if (result) 1100 if (result)
980 dev_err(&urb->dev->dev, "%s - failed resubmitting write urb, error %d\n", __FUNCTION__, result); 1101 dev_err(&urb->dev->dev, "%s - failed resubmitting write"
1102 " urb, error %d\n", __FUNCTION__, result);
981 else 1103 else
982 return; 1104 return;
983 } 1105 }
@@ -988,191 +1110,38 @@ static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
988 pl2303_send(port); 1110 pl2303_send(port);
989} 1111}
990 1112
1113/* All of the device info needed for the PL2303 SIO serial converter */
1114static struct usb_serial_driver pl2303_device = {
1115 .driver = {
1116 .owner = THIS_MODULE,
1117 .name = "pl2303",
1118 },
1119 .id_table = id_table,
1120 .num_interrupt_in = NUM_DONT_CARE,
1121 .num_bulk_in = 1,
1122 .num_bulk_out = 1,
1123 .num_ports = 1,
1124 .open = pl2303_open,
1125 .close = pl2303_close,
1126 .write = pl2303_write,
1127 .ioctl = pl2303_ioctl,
1128 .break_ctl = pl2303_break_ctl,
1129 .set_termios = pl2303_set_termios,
1130 .tiocmget = pl2303_tiocmget,
1131 .tiocmset = pl2303_tiocmset,
1132 .read_bulk_callback = pl2303_read_bulk_callback,
1133 .read_int_callback = pl2303_read_int_callback,
1134 .write_bulk_callback = pl2303_write_bulk_callback,
1135 .write_room = pl2303_write_room,
1136 .chars_in_buffer = pl2303_chars_in_buffer,
1137 .attach = pl2303_startup,
1138 .shutdown = pl2303_shutdown,
1139};
991 1140
992/* 1141static int __init pl2303_init(void)
993 * pl2303_buf_alloc
994 *
995 * Allocate a circular buffer and all associated memory.
996 */
997
998static struct pl2303_buf *pl2303_buf_alloc(unsigned int size)
999{
1000
1001 struct pl2303_buf *pb;
1002
1003
1004 if (size == 0)
1005 return NULL;
1006
1007 pb = (struct pl2303_buf *)kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL);
1008 if (pb == NULL)
1009 return NULL;
1010
1011 pb->buf_buf = kmalloc(size, GFP_KERNEL);
1012 if (pb->buf_buf == NULL) {
1013 kfree(pb);
1014 return NULL;
1015 }
1016
1017 pb->buf_size = size;
1018 pb->buf_get = pb->buf_put = pb->buf_buf;
1019
1020 return pb;
1021
1022}
1023
1024
1025/*
1026 * pl2303_buf_free
1027 *
1028 * Free the buffer and all associated memory.
1029 */
1030
1031static void pl2303_buf_free(struct pl2303_buf *pb)
1032{
1033 if (pb) {
1034 kfree(pb->buf_buf);
1035 kfree(pb);
1036 }
1037}
1038
1039
1040/*
1041 * pl2303_buf_clear
1042 *
1043 * Clear out all data in the circular buffer.
1044 */
1045
1046static void pl2303_buf_clear(struct pl2303_buf *pb)
1047{
1048 if (pb != NULL)
1049 pb->buf_get = pb->buf_put;
1050 /* equivalent to a get of all data available */
1051}
1052
1053
1054/*
1055 * pl2303_buf_data_avail
1056 *
1057 * Return the number of bytes of data available in the circular
1058 * buffer.
1059 */
1060
1061static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb)
1062{
1063 if (pb != NULL)
1064 return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size);
1065 else
1066 return 0;
1067}
1068
1069
1070/*
1071 * pl2303_buf_space_avail
1072 *
1073 * Return the number of bytes of space available in the circular
1074 * buffer.
1075 */
1076
1077static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb)
1078{
1079 if (pb != NULL)
1080 return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size);
1081 else
1082 return 0;
1083}
1084
1085
1086/*
1087 * pl2303_buf_put
1088 *
1089 * Copy data data from a user buffer and put it into the circular buffer.
1090 * Restrict to the amount of space available.
1091 *
1092 * Return the number of bytes copied.
1093 */
1094
1095static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf,
1096 unsigned int count)
1097{
1098
1099 unsigned int len;
1100
1101
1102 if (pb == NULL)
1103 return 0;
1104
1105 len = pl2303_buf_space_avail(pb);
1106 if (count > len)
1107 count = len;
1108
1109 if (count == 0)
1110 return 0;
1111
1112 len = pb->buf_buf + pb->buf_size - pb->buf_put;
1113 if (count > len) {
1114 memcpy(pb->buf_put, buf, len);
1115 memcpy(pb->buf_buf, buf+len, count - len);
1116 pb->buf_put = pb->buf_buf + count - len;
1117 } else {
1118 memcpy(pb->buf_put, buf, count);
1119 if (count < len)
1120 pb->buf_put += count;
1121 else /* count == len */
1122 pb->buf_put = pb->buf_buf;
1123 }
1124
1125 return count;
1126
1127}
1128
1129
1130/*
1131 * pl2303_buf_get
1132 *
1133 * Get data from the circular buffer and copy to the given buffer.
1134 * Restrict to the amount of data available.
1135 *
1136 * Return the number of bytes copied.
1137 */
1138
1139static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf,
1140 unsigned int count)
1141{
1142
1143 unsigned int len;
1144
1145
1146 if (pb == NULL)
1147 return 0;
1148
1149 len = pl2303_buf_data_avail(pb);
1150 if (count > len)
1151 count = len;
1152
1153 if (count == 0)
1154 return 0;
1155
1156 len = pb->buf_buf + pb->buf_size - pb->buf_get;
1157 if (count > len) {
1158 memcpy(buf, pb->buf_get, len);
1159 memcpy(buf+len, pb->buf_buf, count - len);
1160 pb->buf_get = pb->buf_buf + count - len;
1161 } else {
1162 memcpy(buf, pb->buf_get, count);
1163 if (count < len)
1164 pb->buf_get += count;
1165 else /* count == len */
1166 pb->buf_get = pb->buf_buf;
1167 }
1168
1169 return count;
1170
1171}
1172
1173static int __init pl2303_init (void)
1174{ 1142{
1175 int retval; 1143 int retval;
1144
1176 retval = usb_serial_register(&pl2303_device); 1145 retval = usb_serial_register(&pl2303_device);
1177 if (retval) 1146 if (retval)
1178 goto failed_usb_serial_register; 1147 goto failed_usb_serial_register;
@@ -1187,14 +1156,12 @@ failed_usb_serial_register:
1187 return retval; 1156 return retval;
1188} 1157}
1189 1158
1190 1159static void __exit pl2303_exit(void)
1191static void __exit pl2303_exit (void)
1192{ 1160{
1193 usb_deregister (&pl2303_driver); 1161 usb_deregister(&pl2303_driver);
1194 usb_serial_deregister (&pl2303_device); 1162 usb_serial_deregister(&pl2303_device);
1195} 1163}
1196 1164
1197
1198module_init(pl2303_init); 1165module_init(pl2303_init);
1199module_exit(pl2303_exit); 1166module_exit(pl2303_exit);
1200 1167
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index 55195e76eb6f..762cc290ef58 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -89,3 +89,7 @@
89/* Belkin "F5U257" Serial Adapter */ 89/* Belkin "F5U257" Serial Adapter */
90#define BELKIN_VENDOR_ID 0x050d 90#define BELKIN_VENDOR_ID 0x050d
91#define BELKIN_PRODUCT_ID 0x0257 91#define BELKIN_PRODUCT_ID 0x0257
92
93/* Alcor Micro Corp. USB 2.0 TO RS-232 */
94#define ALCOR_VENDOR_ID 0x058F
95#define ALCOR_PRODUCT_ID 0x9720
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index e06a41bd0f3b..0222d92842b8 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -676,33 +676,29 @@ int usb_serial_probe(struct usb_interface *interface,
676 iface_desc = interface->cur_altsetting; 676 iface_desc = interface->cur_altsetting;
677 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 677 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
678 endpoint = &iface_desc->endpoint[i].desc; 678 endpoint = &iface_desc->endpoint[i].desc;
679 679
680 if ((endpoint->bEndpointAddress & 0x80) && 680 if (usb_endpoint_is_bulk_in(endpoint)) {
681 ((endpoint->bmAttributes & 3) == 0x02)) {
682 /* we found a bulk in endpoint */ 681 /* we found a bulk in endpoint */
683 dbg("found bulk in on endpoint %d", i); 682 dbg("found bulk in on endpoint %d", i);
684 bulk_in_endpoint[num_bulk_in] = endpoint; 683 bulk_in_endpoint[num_bulk_in] = endpoint;
685 ++num_bulk_in; 684 ++num_bulk_in;
686 } 685 }
687 686
688 if (((endpoint->bEndpointAddress & 0x80) == 0x00) && 687 if (usb_endpoint_is_bulk_out(endpoint)) {
689 ((endpoint->bmAttributes & 3) == 0x02)) {
690 /* we found a bulk out endpoint */ 688 /* we found a bulk out endpoint */
691 dbg("found bulk out on endpoint %d", i); 689 dbg("found bulk out on endpoint %d", i);
692 bulk_out_endpoint[num_bulk_out] = endpoint; 690 bulk_out_endpoint[num_bulk_out] = endpoint;
693 ++num_bulk_out; 691 ++num_bulk_out;
694 } 692 }
695 693
696 if ((endpoint->bEndpointAddress & 0x80) && 694 if (usb_endpoint_is_int_in(endpoint)) {
697 ((endpoint->bmAttributes & 3) == 0x03)) {
698 /* we found a interrupt in endpoint */ 695 /* we found a interrupt in endpoint */
699 dbg("found interrupt in on endpoint %d", i); 696 dbg("found interrupt in on endpoint %d", i);
700 interrupt_in_endpoint[num_interrupt_in] = endpoint; 697 interrupt_in_endpoint[num_interrupt_in] = endpoint;
701 ++num_interrupt_in; 698 ++num_interrupt_in;
702 } 699 }
703 700
704 if (((endpoint->bEndpointAddress & 0x80) == 0x00) && 701 if (usb_endpoint_is_int_out(endpoint)) {
705 ((endpoint->bmAttributes & 3) == 0x03)) {
706 /* we found an interrupt out endpoint */ 702 /* we found an interrupt out endpoint */
707 dbg("found interrupt out on endpoint %d", i); 703 dbg("found interrupt out on endpoint %d", i);
708 interrupt_out_endpoint[num_interrupt_out] = endpoint; 704 interrupt_out_endpoint[num_interrupt_out] = endpoint;
@@ -716,14 +712,15 @@ int usb_serial_probe(struct usb_interface *interface,
716 if (((le16_to_cpu(dev->descriptor.idVendor) == PL2303_VENDOR_ID) && 712 if (((le16_to_cpu(dev->descriptor.idVendor) == PL2303_VENDOR_ID) &&
717 (le16_to_cpu(dev->descriptor.idProduct) == PL2303_PRODUCT_ID)) || 713 (le16_to_cpu(dev->descriptor.idProduct) == PL2303_PRODUCT_ID)) ||
718 ((le16_to_cpu(dev->descriptor.idVendor) == ATEN_VENDOR_ID) && 714 ((le16_to_cpu(dev->descriptor.idVendor) == ATEN_VENDOR_ID) &&
719 (le16_to_cpu(dev->descriptor.idProduct) == ATEN_PRODUCT_ID))) { 715 (le16_to_cpu(dev->descriptor.idProduct) == ATEN_PRODUCT_ID)) ||
716 ((le16_to_cpu(dev->descriptor.idVendor) == ALCOR_VENDOR_ID) &&
717 (le16_to_cpu(dev->descriptor.idProduct) == ALCOR_PRODUCT_ID))) {
720 if (interface != dev->actconfig->interface[0]) { 718 if (interface != dev->actconfig->interface[0]) {
721 /* check out the endpoints of the other interface*/ 719 /* check out the endpoints of the other interface*/
722 iface_desc = dev->actconfig->interface[0]->cur_altsetting; 720 iface_desc = dev->actconfig->interface[0]->cur_altsetting;
723 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 721 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
724 endpoint = &iface_desc->endpoint[i].desc; 722 endpoint = &iface_desc->endpoint[i].desc;
725 if ((endpoint->bEndpointAddress & 0x80) && 723 if (usb_endpoint_is_int_in(endpoint)) {
726 ((endpoint->bmAttributes & 3) == 0x03)) {
727 /* we found a interrupt in endpoint */ 724 /* we found a interrupt in endpoint */
728 dbg("found interrupt in for Prolific device on separate interface"); 725 dbg("found interrupt in for Prolific device on separate interface");
729 interrupt_in_endpoint[num_interrupt_in] = endpoint; 726 interrupt_in_endpoint[num_interrupt_in] = endpoint;
@@ -937,7 +934,10 @@ int usb_serial_probe(struct usb_interface *interface,
937 934
938 snprintf (&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number); 935 snprintf (&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number);
939 dbg ("%s - registering %s", __FUNCTION__, port->dev.bus_id); 936 dbg ("%s - registering %s", __FUNCTION__, port->dev.bus_id);
940 device_register (&port->dev); 937 retval = device_register(&port->dev);
938 if (retval)
939 dev_err(&port->dev, "Error registering port device, "
940 "continuing\n");
941 } 941 }
942 942
943 usb_serial_console_init (debug, minor); 943 usb_serial_console_init (debug, minor);
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-04 09:57:30 -0500