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1da177e4 LT |
1 | /* |
2 | * USB IR Dongle driver | |
3 | * | |
4 | * Copyright (C) 2001-2002 Greg Kroah-Hartman (greg@kroah.com) | |
5 | * Copyright (C) 2002 Gary Brubaker (xavyer@ix.netcom.com) | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This driver allows a USB IrDA device to be used as a "dumb" serial device. | |
13 | * This can be useful if you do not have access to a full IrDA stack on the | |
14 | * other side of the connection. If you do have an IrDA stack on both devices, | |
15 | * please use the usb-irda driver, as it contains the proper error checking and | |
16 | * other goodness of a full IrDA stack. | |
17 | * | |
18 | * Portions of this driver were taken from drivers/net/irda/irda-usb.c, which | |
19 | * was written by Roman Weissgaerber <weissg@vienna.at>, Dag Brattli | |
20 | * <dag@brattli.net>, and Jean Tourrilhes <jt@hpl.hp.com> | |
21 | * | |
22 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
23 | * | |
24 | * 2002_Mar_07 greg kh | |
25 | * moved some needed structures and #define values from the | |
26 | * net/irda/irda-usb.h file into our file, as we don't want to depend on | |
27 | * that codebase compiling correctly :) | |
28 | * | |
29 | * 2002_Jan_14 gb | |
30 | * Added module parameter to force specific number of XBOFs. | |
31 | * Added ir_xbof_change(). | |
32 | * Reorganized read_bulk_callback error handling. | |
33 | * Switched from FILL_BULK_URB() to usb_fill_bulk_urb(). | |
34 | * | |
35 | * 2001_Nov_08 greg kh | |
36 | * Changed the irda_usb_find_class_desc() function based on comments and | |
37 | * code from Martin Diehl. | |
38 | * | |
39 | * 2001_Nov_01 greg kh | |
40 | * Added support for more IrDA USB devices. | |
41 | * Added support for zero packet. Added buffer override paramater, so | |
42 | * users can transfer larger packets at once if they wish. Both patches | |
43 | * came from Dag Brattli <dag@obexcode.com>. | |
44 | * | |
45 | * 2001_Oct_07 greg kh | |
46 | * initial version released. | |
47 | */ | |
48 | ||
49 | #include <linux/config.h> | |
50 | #include <linux/kernel.h> | |
51 | #include <linux/errno.h> | |
52 | #include <linux/init.h> | |
53 | #include <linux/slab.h> | |
54 | #include <linux/tty.h> | |
55 | #include <linux/tty_driver.h> | |
56 | #include <linux/tty_flip.h> | |
57 | #include <linux/module.h> | |
58 | #include <linux/spinlock.h> | |
59 | #include <asm/uaccess.h> | |
60 | #include <linux/usb.h> | |
61 | #include "usb-serial.h" | |
62 | ||
63 | /* | |
64 | * Version Information | |
65 | */ | |
66 | #define DRIVER_VERSION "v0.4" | |
67 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>" | |
68 | #define DRIVER_DESC "USB IR Dongle driver" | |
69 | ||
70 | /* USB IrDA class spec information */ | |
71 | #define USB_CLASS_IRDA 0x02 | |
72 | #define USB_DT_IRDA 0x21 | |
73 | #define IU_REQ_GET_CLASS_DESC 0x06 | |
74 | #define SPEED_2400 0x01 | |
75 | #define SPEED_9600 0x02 | |
76 | #define SPEED_19200 0x03 | |
77 | #define SPEED_38400 0x04 | |
78 | #define SPEED_57600 0x05 | |
79 | #define SPEED_115200 0x06 | |
80 | #define SPEED_576000 0x07 | |
81 | #define SPEED_1152000 0x08 | |
82 | #define SPEED_4000000 0x09 | |
83 | ||
84 | struct irda_class_desc { | |
85 | u8 bLength; | |
86 | u8 bDescriptorType; | |
87 | u16 bcdSpecRevision; | |
88 | u8 bmDataSize; | |
89 | u8 bmWindowSize; | |
90 | u8 bmMinTurnaroundTime; | |
91 | u16 wBaudRate; | |
92 | u8 bmAdditionalBOFs; | |
93 | u8 bIrdaRateSniff; | |
94 | u8 bMaxUnicastList; | |
95 | } __attribute__ ((packed)); | |
96 | ||
97 | static int debug; | |
98 | ||
99 | /* if overridden by the user, then use their value for the size of the read and | |
100 | * write urbs */ | |
101 | static int buffer_size; | |
102 | /* if overridden by the user, then use the specified number of XBOFs */ | |
103 | static int xbof = -1; | |
104 | ||
105 | static int ir_startup (struct usb_serial *serial); | |
106 | static int ir_open (struct usb_serial_port *port, struct file *filep); | |
107 | static void ir_close (struct usb_serial_port *port, struct file *filep); | |
108 | static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
109 | static void ir_write_bulk_callback (struct urb *urb, struct pt_regs *regs); | |
110 | static void ir_read_bulk_callback (struct urb *urb, struct pt_regs *regs); | |
111 | static void ir_set_termios (struct usb_serial_port *port, struct termios *old_termios); | |
112 | ||
113 | static u8 ir_baud = 0; | |
114 | static u8 ir_xbof = 0; | |
115 | static u8 ir_add_bof = 0; | |
116 | ||
117 | static struct usb_device_id id_table [] = { | |
118 | { USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */ | |
119 | { USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */ | |
120 | { USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */ | |
121 | { USB_INTERFACE_INFO (USB_CLASS_APP_SPEC, USB_CLASS_IRDA, 0) }, | |
122 | { } /* Terminating entry */ | |
123 | }; | |
124 | ||
125 | MODULE_DEVICE_TABLE (usb, id_table); | |
126 | ||
127 | static struct usb_driver ir_driver = { | |
128 | .owner = THIS_MODULE, | |
129 | .name = "ir-usb", | |
130 | .probe = usb_serial_probe, | |
131 | .disconnect = usb_serial_disconnect, | |
132 | .id_table = id_table, | |
ba9dc657 | 133 | .no_dynamic_id = 1, |
1da177e4 LT |
134 | }; |
135 | ||
136 | ||
ea65370d | 137 | static struct usb_serial_driver ir_device = { |
18fcac35 GKH |
138 | .driver = { |
139 | .owner = THIS_MODULE, | |
269bda1c | 140 | .name = "ir-usb", |
18fcac35 | 141 | }, |
269bda1c | 142 | .description = "IR Dongle", |
1da177e4 LT |
143 | .id_table = id_table, |
144 | .num_interrupt_in = 1, | |
145 | .num_bulk_in = 1, | |
146 | .num_bulk_out = 1, | |
147 | .num_ports = 1, | |
148 | .set_termios = ir_set_termios, | |
149 | .attach = ir_startup, | |
150 | .open = ir_open, | |
151 | .close = ir_close, | |
152 | .write = ir_write, | |
153 | .write_bulk_callback = ir_write_bulk_callback, | |
154 | .read_bulk_callback = ir_read_bulk_callback, | |
155 | }; | |
156 | ||
157 | static inline void irda_usb_dump_class_desc(struct irda_class_desc *desc) | |
158 | { | |
159 | dbg("bLength=%x", desc->bLength); | |
160 | dbg("bDescriptorType=%x", desc->bDescriptorType); | |
161 | dbg("bcdSpecRevision=%x", desc->bcdSpecRevision); | |
162 | dbg("bmDataSize=%x", desc->bmDataSize); | |
163 | dbg("bmWindowSize=%x", desc->bmWindowSize); | |
164 | dbg("bmMinTurnaroundTime=%d", desc->bmMinTurnaroundTime); | |
165 | dbg("wBaudRate=%x", desc->wBaudRate); | |
166 | dbg("bmAdditionalBOFs=%x", desc->bmAdditionalBOFs); | |
167 | dbg("bIrdaRateSniff=%x", desc->bIrdaRateSniff); | |
168 | dbg("bMaxUnicastList=%x", desc->bMaxUnicastList); | |
169 | } | |
170 | ||
171 | /*------------------------------------------------------------------*/ | |
172 | /* | |
173 | * Function irda_usb_find_class_desc(dev, ifnum) | |
174 | * | |
175 | * Returns instance of IrDA class descriptor, or NULL if not found | |
176 | * | |
177 | * The class descriptor is some extra info that IrDA USB devices will | |
178 | * offer to us, describing their IrDA characteristics. We will use that in | |
179 | * irda_usb_init_qos() | |
180 | * | |
181 | * Based on the same function in drivers/net/irda/irda-usb.c | |
182 | */ | |
183 | static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev, unsigned int ifnum) | |
184 | { | |
185 | struct irda_class_desc *desc; | |
186 | int ret; | |
187 | ||
188 | desc = kmalloc(sizeof (struct irda_class_desc), GFP_KERNEL); | |
189 | if (desc == NULL) | |
190 | return NULL; | |
191 | memset(desc, 0, sizeof(struct irda_class_desc)); | |
192 | ||
193 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev,0), | |
194 | IU_REQ_GET_CLASS_DESC, | |
195 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
196 | 0, ifnum, desc, sizeof(*desc), 1000); | |
197 | ||
198 | dbg("%s - ret=%d", __FUNCTION__, ret); | |
199 | if (ret < sizeof(*desc)) { | |
200 | dbg("%s - class descriptor read %s (%d)", | |
201 | __FUNCTION__, | |
202 | (ret<0) ? "failed" : "too short", | |
203 | ret); | |
204 | goto error; | |
205 | } | |
206 | if (desc->bDescriptorType != USB_DT_IRDA) { | |
207 | dbg("%s - bad class descriptor type", __FUNCTION__); | |
208 | goto error; | |
209 | } | |
210 | ||
211 | irda_usb_dump_class_desc(desc); | |
212 | return desc; | |
213 | error: | |
214 | kfree(desc); | |
215 | return NULL; | |
216 | } | |
217 | ||
218 | ||
219 | static u8 ir_xbof_change(u8 xbof) | |
220 | { | |
221 | u8 result; | |
222 | /* reference irda-usb.c */ | |
223 | switch(xbof) { | |
224 | case 48: result = 0x10; break; | |
225 | case 28: | |
226 | case 24: result = 0x20; break; | |
227 | default: | |
228 | case 12: result = 0x30; break; | |
229 | case 5: | |
230 | case 6: result = 0x40; break; | |
231 | case 3: result = 0x50; break; | |
232 | case 2: result = 0x60; break; | |
233 | case 1: result = 0x70; break; | |
234 | case 0: result = 0x80; break; | |
235 | } | |
236 | return(result); | |
237 | } | |
238 | ||
239 | ||
240 | static int ir_startup (struct usb_serial *serial) | |
241 | { | |
242 | struct irda_class_desc *irda_desc; | |
243 | ||
244 | irda_desc = irda_usb_find_class_desc (serial->dev, 0); | |
245 | if (irda_desc == NULL) { | |
246 | dev_err (&serial->dev->dev, "IRDA class descriptor not found, device not bound\n"); | |
247 | return -ENODEV; | |
248 | } | |
249 | ||
250 | dbg ("%s - Baud rates supported:%s%s%s%s%s%s%s%s%s", | |
251 | __FUNCTION__, | |
252 | (irda_desc->wBaudRate & 0x0001) ? " 2400" : "", | |
253 | (irda_desc->wBaudRate & 0x0002) ? " 9600" : "", | |
254 | (irda_desc->wBaudRate & 0x0004) ? " 19200" : "", | |
255 | (irda_desc->wBaudRate & 0x0008) ? " 38400" : "", | |
256 | (irda_desc->wBaudRate & 0x0010) ? " 57600" : "", | |
257 | (irda_desc->wBaudRate & 0x0020) ? " 115200" : "", | |
258 | (irda_desc->wBaudRate & 0x0040) ? " 576000" : "", | |
259 | (irda_desc->wBaudRate & 0x0080) ? " 1152000" : "", | |
260 | (irda_desc->wBaudRate & 0x0100) ? " 4000000" : ""); | |
261 | ||
262 | switch( irda_desc->bmAdditionalBOFs ) { | |
263 | case 0x01: ir_add_bof = 48; break; | |
264 | case 0x02: ir_add_bof = 24; break; | |
265 | case 0x04: ir_add_bof = 12; break; | |
266 | case 0x08: ir_add_bof = 6; break; | |
267 | case 0x10: ir_add_bof = 3; break; | |
268 | case 0x20: ir_add_bof = 2; break; | |
269 | case 0x40: ir_add_bof = 1; break; | |
270 | case 0x80: ir_add_bof = 0; break; | |
271 | default:; | |
272 | } | |
273 | ||
274 | kfree (irda_desc); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int ir_open (struct usb_serial_port *port, struct file *filp) | |
280 | { | |
281 | char *buffer; | |
282 | int result = 0; | |
283 | ||
284 | dbg("%s - port %d", __FUNCTION__, port->number); | |
285 | ||
286 | if (buffer_size) { | |
287 | /* override the default buffer sizes */ | |
288 | buffer = kmalloc (buffer_size, GFP_KERNEL); | |
289 | if (!buffer) { | |
290 | dev_err (&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
291 | return -ENOMEM; | |
292 | } | |
293 | kfree (port->read_urb->transfer_buffer); | |
294 | port->read_urb->transfer_buffer = buffer; | |
295 | port->read_urb->transfer_buffer_length = buffer_size; | |
296 | ||
297 | buffer = kmalloc (buffer_size, GFP_KERNEL); | |
298 | if (!buffer) { | |
299 | dev_err (&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
300 | return -ENOMEM; | |
301 | } | |
302 | kfree (port->write_urb->transfer_buffer); | |
303 | port->write_urb->transfer_buffer = buffer; | |
304 | port->write_urb->transfer_buffer_length = buffer_size; | |
305 | port->bulk_out_size = buffer_size; | |
306 | } | |
307 | ||
308 | /* Start reading from the device */ | |
309 | usb_fill_bulk_urb ( | |
310 | port->read_urb, | |
311 | port->serial->dev, | |
312 | usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), | |
313 | port->read_urb->transfer_buffer, | |
314 | port->read_urb->transfer_buffer_length, | |
315 | ir_read_bulk_callback, | |
316 | port); | |
317 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
318 | if (result) | |
319 | dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); | |
320 | ||
321 | return result; | |
322 | } | |
323 | ||
324 | static void ir_close (struct usb_serial_port *port, struct file * filp) | |
325 | { | |
326 | dbg("%s - port %d", __FUNCTION__, port->number); | |
327 | ||
328 | /* shutdown our bulk read */ | |
329 | usb_kill_urb(port->read_urb); | |
330 | } | |
331 | ||
332 | static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count) | |
333 | { | |
334 | unsigned char *transfer_buffer; | |
335 | int result; | |
336 | int transfer_size; | |
337 | ||
338 | dbg("%s - port = %d, count = %d", __FUNCTION__, port->number, count); | |
339 | ||
340 | if (!port->tty) { | |
341 | dev_err (&port->dev, "%s - no tty???\n", __FUNCTION__); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | if (count == 0) | |
346 | return 0; | |
347 | ||
507ca9bc GKH |
348 | spin_lock(&port->lock); |
349 | if (port->write_urb_busy) { | |
350 | spin_unlock(&port->lock); | |
351 | dbg("%s - already writing", __FUNCTION__); | |
1da177e4 LT |
352 | return 0; |
353 | } | |
507ca9bc GKH |
354 | port->write_urb_busy = 1; |
355 | spin_unlock(&port->lock); | |
1da177e4 LT |
356 | |
357 | transfer_buffer = port->write_urb->transfer_buffer; | |
358 | transfer_size = min(count, port->bulk_out_size - 1); | |
359 | ||
360 | /* | |
361 | * The first byte of the packet we send to the device contains an | |
362 | * inband header which indicates an additional number of BOFs and | |
363 | * a baud rate change. | |
364 | * | |
365 | * See section 5.4.2.2 of the USB IrDA spec. | |
366 | */ | |
367 | *transfer_buffer = ir_xbof | ir_baud; | |
368 | ++transfer_buffer; | |
369 | ||
370 | memcpy (transfer_buffer, buf, transfer_size); | |
371 | ||
372 | usb_fill_bulk_urb ( | |
373 | port->write_urb, | |
374 | port->serial->dev, | |
375 | usb_sndbulkpipe(port->serial->dev, | |
376 | port->bulk_out_endpointAddress), | |
377 | port->write_urb->transfer_buffer, | |
378 | transfer_size + 1, | |
379 | ir_write_bulk_callback, | |
380 | port); | |
381 | ||
382 | port->write_urb->transfer_flags = URB_ZERO_PACKET; | |
383 | ||
384 | result = usb_submit_urb (port->write_urb, GFP_ATOMIC); | |
507ca9bc GKH |
385 | if (result) { |
386 | port->write_urb_busy = 0; | |
1da177e4 | 387 | dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result); |
507ca9bc | 388 | } else |
1da177e4 LT |
389 | result = transfer_size; |
390 | ||
391 | return result; | |
392 | } | |
393 | ||
394 | static void ir_write_bulk_callback (struct urb *urb, struct pt_regs *regs) | |
395 | { | |
396 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
397 | ||
398 | dbg("%s - port %d", __FUNCTION__, port->number); | |
507ca9bc GKH |
399 | |
400 | port->write_urb_busy = 0; | |
1da177e4 LT |
401 | if (urb->status) { |
402 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); | |
403 | return; | |
404 | } | |
405 | ||
406 | usb_serial_debug_data ( | |
407 | debug, | |
408 | &port->dev, | |
409 | __FUNCTION__, | |
410 | urb->actual_length, | |
411 | urb->transfer_buffer); | |
412 | ||
413 | schedule_work(&port->work); | |
414 | } | |
415 | ||
416 | static void ir_read_bulk_callback (struct urb *urb, struct pt_regs *regs) | |
417 | { | |
418 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
419 | struct tty_struct *tty; | |
420 | unsigned char *data = urb->transfer_buffer; | |
421 | int result; | |
422 | ||
423 | dbg("%s - port %d", __FUNCTION__, port->number); | |
424 | ||
425 | if (!port->open_count) { | |
426 | dbg("%s - port closed.", __FUNCTION__); | |
427 | return; | |
428 | } | |
429 | ||
430 | switch (urb->status) { | |
431 | ||
432 | case 0: /* Successful */ | |
433 | ||
434 | /* | |
435 | * The first byte of the packet we get from the device | |
436 | * contains a busy indicator and baud rate change. | |
437 | * See section 5.4.1.2 of the USB IrDA spec. | |
438 | */ | |
439 | if ((*data & 0x0f) > 0) | |
440 | ir_baud = *data & 0x0f; | |
441 | ||
442 | usb_serial_debug_data ( | |
443 | debug, | |
444 | &port->dev, | |
445 | __FUNCTION__, | |
446 | urb->actual_length, | |
447 | data); | |
448 | ||
449 | /* | |
450 | * Bypass flip-buffers, and feed the ldisc directly | |
451 | * due to our potentially large buffer size. Since we | |
452 | * used to set low_latency, this is exactly what the | |
453 | * tty layer did anyway :) | |
454 | */ | |
455 | tty = port->tty; | |
456 | ||
457 | /* | |
458 | * FIXME: must not do this in IRQ context, | |
459 | * must honour TTY_DONT_FLIP | |
460 | */ | |
461 | tty->ldisc.receive_buf( | |
462 | tty, | |
463 | data+1, | |
464 | NULL, | |
465 | urb->actual_length-1); | |
466 | ||
467 | /* | |
468 | * No break here. | |
469 | * We want to resubmit the urb so we can read | |
470 | * again. | |
471 | */ | |
472 | ||
473 | case -EPROTO: /* taking inspiration from pl2303.c */ | |
474 | ||
475 | /* Continue trying to always read */ | |
476 | usb_fill_bulk_urb ( | |
477 | port->read_urb, | |
478 | port->serial->dev, | |
479 | usb_rcvbulkpipe(port->serial->dev, | |
480 | port->bulk_in_endpointAddress), | |
481 | port->read_urb->transfer_buffer, | |
482 | port->read_urb->transfer_buffer_length, | |
483 | ir_read_bulk_callback, | |
484 | port); | |
485 | ||
486 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
487 | if (result) | |
488 | dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", | |
489 | __FUNCTION__, result); | |
490 | ||
491 | break ; | |
492 | ||
493 | default: | |
494 | dbg("%s - nonzero read bulk status received: %d", | |
495 | __FUNCTION__, | |
496 | urb->status); | |
497 | break ; | |
498 | ||
499 | } | |
500 | ||
501 | return; | |
502 | } | |
503 | ||
504 | static void ir_set_termios (struct usb_serial_port *port, struct termios *old_termios) | |
505 | { | |
506 | unsigned char *transfer_buffer; | |
507 | unsigned int cflag; | |
508 | int result; | |
509 | ||
510 | dbg("%s - port %d", __FUNCTION__, port->number); | |
511 | ||
512 | if ((!port->tty) || (!port->tty->termios)) { | |
513 | dbg("%s - no tty structures", __FUNCTION__); | |
514 | return; | |
515 | } | |
516 | ||
517 | cflag = port->tty->termios->c_cflag; | |
518 | /* check that they really want us to change something */ | |
519 | if (old_termios) { | |
520 | if ((cflag == old_termios->c_cflag) && | |
521 | (RELEVANT_IFLAG(port->tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) { | |
522 | dbg("%s - nothing to change...", __FUNCTION__); | |
523 | return; | |
524 | } | |
525 | } | |
526 | ||
527 | /* All we can change is the baud rate */ | |
528 | if (cflag & CBAUD) { | |
529 | ||
530 | dbg ("%s - asking for baud %d", | |
531 | __FUNCTION__, | |
532 | tty_get_baud_rate(port->tty)); | |
533 | ||
534 | /* | |
535 | * FIXME, we should compare the baud request against the | |
536 | * capability stated in the IR header that we got in the | |
537 | * startup function. | |
538 | */ | |
539 | switch (cflag & CBAUD) { | |
540 | case B2400: ir_baud = SPEED_2400; break; | |
541 | default: | |
542 | case B9600: ir_baud = SPEED_9600; break; | |
543 | case B19200: ir_baud = SPEED_19200; break; | |
544 | case B38400: ir_baud = SPEED_38400; break; | |
545 | case B57600: ir_baud = SPEED_57600; break; | |
546 | case B115200: ir_baud = SPEED_115200; break; | |
547 | case B576000: ir_baud = SPEED_576000; break; | |
548 | case B1152000: ir_baud = SPEED_1152000; break; | |
549 | #ifdef B4000000 | |
550 | case B4000000: ir_baud = SPEED_4000000; break; | |
551 | #endif | |
552 | } | |
553 | ||
554 | if (xbof == -1) { | |
555 | ir_xbof = ir_xbof_change(ir_add_bof); | |
556 | } else { | |
557 | ir_xbof = ir_xbof_change(xbof) ; | |
558 | } | |
559 | ||
560 | /* Notify the tty driver that the termios have changed. */ | |
561 | port->tty->ldisc.set_termios(port->tty, NULL); | |
562 | ||
563 | /* FIXME need to check to see if our write urb is busy right | |
564 | * now, or use a urb pool. | |
565 | * | |
566 | * send the baud change out on an "empty" data packet | |
567 | */ | |
568 | transfer_buffer = port->write_urb->transfer_buffer; | |
569 | *transfer_buffer = ir_xbof | ir_baud; | |
570 | ||
571 | usb_fill_bulk_urb ( | |
572 | port->write_urb, | |
573 | port->serial->dev, | |
574 | usb_sndbulkpipe(port->serial->dev, | |
575 | port->bulk_out_endpointAddress), | |
576 | port->write_urb->transfer_buffer, | |
577 | 1, | |
578 | ir_write_bulk_callback, | |
579 | port); | |
580 | ||
581 | port->write_urb->transfer_flags = URB_ZERO_PACKET; | |
582 | ||
583 | result = usb_submit_urb (port->write_urb, GFP_KERNEL); | |
584 | if (result) | |
585 | dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result); | |
586 | } | |
587 | return; | |
588 | } | |
589 | ||
590 | ||
591 | static int __init ir_init (void) | |
592 | { | |
593 | int retval; | |
594 | retval = usb_serial_register(&ir_device); | |
595 | if (retval) | |
596 | goto failed_usb_serial_register; | |
597 | retval = usb_register(&ir_driver); | |
598 | if (retval) | |
599 | goto failed_usb_register; | |
600 | info(DRIVER_DESC " " DRIVER_VERSION); | |
601 | return 0; | |
602 | failed_usb_register: | |
603 | usb_serial_deregister(&ir_device); | |
604 | failed_usb_serial_register: | |
605 | return retval; | |
606 | } | |
607 | ||
608 | ||
609 | static void __exit ir_exit (void) | |
610 | { | |
611 | usb_deregister (&ir_driver); | |
612 | usb_serial_deregister (&ir_device); | |
613 | } | |
614 | ||
615 | ||
616 | module_init(ir_init); | |
617 | module_exit(ir_exit); | |
618 | ||
619 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
620 | MODULE_DESCRIPTION(DRIVER_DESC); | |
621 | MODULE_LICENSE("GPL"); | |
622 | ||
623 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
624 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
625 | module_param(xbof, int, 0); | |
626 | MODULE_PARM_DESC(xbof, "Force specific number of XBOFs"); | |
627 | module_param(buffer_size, int, 0); | |
628 | MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers"); | |
629 |