Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Prolific PL2303 USB to serial adaptor driver | |
3 | * | |
4 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) | |
5 | * Copyright (C) 2003 IBM Corp. | |
6 | * | |
7 | * Original driver for 2.2.x by anonymous | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
502b95c1 | 11 | * the Free Software Foundation; either version 2 of the License. |
1da177e4 LT |
12 | * |
13 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
14 | * | |
1da177e4 LT |
15 | */ |
16 | ||
1da177e4 LT |
17 | #include <linux/kernel.h> |
18 | #include <linux/errno.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/tty.h> | |
22 | #include <linux/tty_driver.h> | |
23 | #include <linux/tty_flip.h> | |
24 | #include <linux/serial.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/moduleparam.h> | |
27 | #include <linux/spinlock.h> | |
28 | #include <asm/uaccess.h> | |
29 | #include <linux/usb.h> | |
a969888c | 30 | #include <linux/usb/serial.h> |
1da177e4 LT |
31 | #include "pl2303.h" |
32 | ||
33 | /* | |
34 | * Version Information | |
35 | */ | |
1da177e4 LT |
36 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
37 | ||
38 | static int debug; | |
39 | ||
40 | #define PL2303_CLOSING_WAIT (30*HZ) | |
41 | ||
42 | #define PL2303_BUF_SIZE 1024 | |
43 | #define PL2303_TMP_BUF_SIZE 1024 | |
44 | ||
1da177e4 LT |
45 | struct pl2303_buf { |
46 | unsigned int buf_size; | |
47 | char *buf_buf; | |
48 | char *buf_get; | |
49 | char *buf_put; | |
50 | }; | |
51 | ||
52 | static struct usb_device_id id_table [] = { | |
53 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, | |
54 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 55 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
56 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
57 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
58 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, | |
59 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, | |
60 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
61 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
62 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
63 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 64 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
65 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
66 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
67 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
68 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
69 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
70 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
71 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
72 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 73 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 74 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 75 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
acbb36f1 | 76 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
77 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
78 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 79 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 80 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 81 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 82 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 83 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 84 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
b697f70f | 85 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_ID) }, |
1da177e4 LT |
86 | { } /* Terminating entry */ |
87 | }; | |
88 | ||
372db8a7 | 89 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
90 | |
91 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
92 | .name = "pl2303", |
93 | .probe = usb_serial_probe, | |
94 | .disconnect = usb_serial_disconnect, | |
95 | .id_table = id_table, | |
ba9dc657 | 96 | .no_dynamic_id = 1, |
1da177e4 LT |
97 | }; |
98 | ||
99 | #define SET_LINE_REQUEST_TYPE 0x21 | |
100 | #define SET_LINE_REQUEST 0x20 | |
101 | ||
102 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
103 | #define SET_CONTROL_REQUEST 0x22 | |
104 | #define CONTROL_DTR 0x01 | |
105 | #define CONTROL_RTS 0x02 | |
106 | ||
107 | #define BREAK_REQUEST_TYPE 0x21 | |
108 | #define BREAK_REQUEST 0x23 | |
109 | #define BREAK_ON 0xffff | |
110 | #define BREAK_OFF 0x0000 | |
111 | ||
112 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
113 | #define GET_LINE_REQUEST 0x21 | |
114 | ||
115 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
116 | #define VENDOR_WRITE_REQUEST 0x01 | |
117 | ||
118 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
119 | #define VENDOR_READ_REQUEST 0x01 | |
120 | ||
121 | #define UART_STATE 0x08 | |
122 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
123 | #define UART_DCD 0x01 | |
124 | #define UART_DSR 0x02 | |
125 | #define UART_BREAK_ERROR 0x04 | |
126 | #define UART_RING 0x08 | |
127 | #define UART_FRAME_ERROR 0x10 | |
128 | #define UART_PARITY_ERROR 0x20 | |
129 | #define UART_OVERRUN_ERROR 0x40 | |
130 | #define UART_CTS 0x80 | |
131 | ||
1da177e4 LT |
132 | |
133 | enum pl2303_type { | |
134 | type_0, /* don't know the difference between type 0 and */ | |
135 | type_1, /* type 1, until someone from prolific tells us... */ | |
136 | HX, /* HX version of the pl2303 chip */ | |
137 | }; | |
138 | ||
139 | struct pl2303_private { | |
140 | spinlock_t lock; | |
141 | struct pl2303_buf *buf; | |
142 | int write_urb_in_use; | |
143 | wait_queue_head_t delta_msr_wait; | |
144 | u8 line_control; | |
145 | u8 line_status; | |
146 | u8 termios_initialized; | |
147 | enum pl2303_type type; | |
148 | }; | |
149 | ||
572d3138 TG |
150 | /* |
151 | * pl2303_buf_alloc | |
152 | * | |
153 | * Allocate a circular buffer and all associated memory. | |
154 | */ | |
155 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) | |
156 | { | |
157 | struct pl2303_buf *pb; | |
158 | ||
159 | if (size == 0) | |
160 | return NULL; | |
161 | ||
162 | pb = (struct pl2303_buf *)kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); | |
163 | if (pb == NULL) | |
164 | return NULL; | |
165 | ||
166 | pb->buf_buf = kmalloc(size, GFP_KERNEL); | |
167 | if (pb->buf_buf == NULL) { | |
168 | kfree(pb); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | pb->buf_size = size; | |
173 | pb->buf_get = pb->buf_put = pb->buf_buf; | |
174 | ||
175 | return pb; | |
176 | } | |
177 | ||
178 | /* | |
179 | * pl2303_buf_free | |
180 | * | |
181 | * Free the buffer and all associated memory. | |
182 | */ | |
183 | static void pl2303_buf_free(struct pl2303_buf *pb) | |
184 | { | |
185 | if (pb) { | |
186 | kfree(pb->buf_buf); | |
187 | kfree(pb); | |
188 | } | |
189 | } | |
190 | ||
191 | /* | |
192 | * pl2303_buf_clear | |
193 | * | |
194 | * Clear out all data in the circular buffer. | |
195 | */ | |
196 | static void pl2303_buf_clear(struct pl2303_buf *pb) | |
197 | { | |
198 | if (pb != NULL) | |
199 | pb->buf_get = pb->buf_put; | |
200 | /* equivalent to a get of all data available */ | |
201 | } | |
202 | ||
203 | /* | |
204 | * pl2303_buf_data_avail | |
205 | * | |
206 | * Return the number of bytes of data available in the circular | |
207 | * buffer. | |
208 | */ | |
209 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) | |
210 | { | |
211 | if (pb == NULL) | |
212 | return 0; | |
213 | ||
214 | return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); | |
215 | } | |
216 | ||
217 | /* | |
218 | * pl2303_buf_space_avail | |
219 | * | |
220 | * Return the number of bytes of space available in the circular | |
221 | * buffer. | |
222 | */ | |
223 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) | |
224 | { | |
225 | if (pb == NULL) | |
226 | return 0; | |
227 | ||
228 | return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); | |
229 | } | |
230 | ||
231 | /* | |
232 | * pl2303_buf_put | |
233 | * | |
234 | * Copy data data from a user buffer and put it into the circular buffer. | |
235 | * Restrict to the amount of space available. | |
236 | * | |
237 | * Return the number of bytes copied. | |
238 | */ | |
239 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, | |
240 | unsigned int count) | |
241 | { | |
242 | unsigned int len; | |
243 | ||
244 | if (pb == NULL) | |
245 | return 0; | |
246 | ||
247 | len = pl2303_buf_space_avail(pb); | |
248 | if (count > len) | |
249 | count = len; | |
250 | ||
251 | if (count == 0) | |
252 | return 0; | |
253 | ||
254 | len = pb->buf_buf + pb->buf_size - pb->buf_put; | |
255 | if (count > len) { | |
256 | memcpy(pb->buf_put, buf, len); | |
257 | memcpy(pb->buf_buf, buf+len, count - len); | |
258 | pb->buf_put = pb->buf_buf + count - len; | |
259 | } else { | |
260 | memcpy(pb->buf_put, buf, count); | |
261 | if (count < len) | |
262 | pb->buf_put += count; | |
263 | else /* count == len */ | |
264 | pb->buf_put = pb->buf_buf; | |
265 | } | |
266 | ||
267 | return count; | |
268 | } | |
269 | ||
270 | /* | |
271 | * pl2303_buf_get | |
272 | * | |
273 | * Get data from the circular buffer and copy to the given buffer. | |
274 | * Restrict to the amount of data available. | |
275 | * | |
276 | * Return the number of bytes copied. | |
277 | */ | |
278 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, | |
279 | unsigned int count) | |
280 | { | |
281 | unsigned int len; | |
282 | ||
283 | if (pb == NULL) | |
284 | return 0; | |
285 | ||
286 | len = pl2303_buf_data_avail(pb); | |
287 | if (count > len) | |
288 | count = len; | |
289 | ||
290 | if (count == 0) | |
291 | return 0; | |
292 | ||
293 | len = pb->buf_buf + pb->buf_size - pb->buf_get; | |
294 | if (count > len) { | |
295 | memcpy(buf, pb->buf_get, len); | |
296 | memcpy(buf+len, pb->buf_buf, count - len); | |
297 | pb->buf_get = pb->buf_buf + count - len; | |
298 | } else { | |
299 | memcpy(buf, pb->buf_get, count); | |
300 | if (count < len) | |
301 | pb->buf_get += count; | |
302 | else /* count == len */ | |
303 | pb->buf_get = pb->buf_buf; | |
304 | } | |
305 | ||
306 | return count; | |
307 | } | |
1da177e4 | 308 | |
372db8a7 | 309 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
310 | { |
311 | struct pl2303_private *priv; | |
312 | enum pl2303_type type = type_0; | |
313 | int i; | |
314 | ||
315 | if (serial->dev->descriptor.bDeviceClass == 0x02) | |
316 | type = type_0; | |
317 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
318 | type = HX; | |
319 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
320 | type = type_1; | |
321 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
322 | type = type_1; | |
323 | dbg("device type: %d", type); | |
324 | ||
325 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 326 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
327 | if (!priv) |
328 | goto cleanup; | |
1da177e4 LT |
329 | spin_lock_init(&priv->lock); |
330 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
331 | if (priv->buf == NULL) { | |
332 | kfree(priv); | |
333 | goto cleanup; | |
334 | } | |
335 | init_waitqueue_head(&priv->delta_msr_wait); | |
336 | priv->type = type; | |
337 | usb_set_serial_port_data(serial->port[i], priv); | |
338 | } | |
339 | return 0; | |
340 | ||
341 | cleanup: | |
342 | for (--i; i>=0; --i) { | |
343 | priv = usb_get_serial_port_data(serial->port[i]); | |
344 | pl2303_buf_free(priv->buf); | |
345 | kfree(priv); | |
346 | usb_set_serial_port_data(serial->port[i], NULL); | |
347 | } | |
348 | return -ENOMEM; | |
349 | } | |
350 | ||
372db8a7 | 351 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
352 | { |
353 | int retval; | |
354 | ||
372db8a7 TG |
355 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
356 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
357 | value, 0, NULL, 0, 100); | |
1da177e4 LT |
358 | dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); |
359 | return retval; | |
360 | } | |
361 | ||
1da177e4 LT |
362 | static void pl2303_send(struct usb_serial_port *port) |
363 | { | |
364 | int count, result; | |
365 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
366 | unsigned long flags; | |
367 | ||
368 | dbg("%s - port %d", __FUNCTION__, port->number); | |
369 | ||
370 | spin_lock_irqsave(&priv->lock, flags); | |
371 | ||
372 | if (priv->write_urb_in_use) { | |
373 | spin_unlock_irqrestore(&priv->lock, flags); | |
374 | return; | |
375 | } | |
376 | ||
377 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 378 | port->bulk_out_size); |
1da177e4 LT |
379 | |
380 | if (count == 0) { | |
381 | spin_unlock_irqrestore(&priv->lock, flags); | |
382 | return; | |
383 | } | |
384 | ||
385 | priv->write_urb_in_use = 1; | |
386 | ||
387 | spin_unlock_irqrestore(&priv->lock, flags); | |
388 | ||
372db8a7 TG |
389 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, |
390 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
391 | |
392 | port->write_urb->transfer_buffer_length = count; | |
393 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 394 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 395 | if (result) { |
372db8a7 TG |
396 | dev_err(&port->dev, "%s - failed submitting write urb," |
397 | " error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
398 | priv->write_urb_in_use = 0; |
399 | // TODO: reschedule pl2303_send | |
400 | } | |
401 | ||
cf2c7481 | 402 | usb_serial_port_softint(port); |
1da177e4 LT |
403 | } |
404 | ||
572d3138 TG |
405 | static int pl2303_write(struct usb_serial_port *port, const unsigned char *buf, |
406 | int count) | |
407 | { | |
408 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
409 | unsigned long flags; | |
410 | ||
411 | dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); | |
412 | ||
413 | if (!count) | |
414 | return count; | |
415 | ||
416 | spin_lock_irqsave(&priv->lock, flags); | |
417 | count = pl2303_buf_put(priv->buf, buf, count); | |
418 | spin_unlock_irqrestore(&priv->lock, flags); | |
419 | ||
420 | pl2303_send(port); | |
421 | ||
422 | return count; | |
423 | } | |
424 | ||
1da177e4 LT |
425 | static int pl2303_write_room(struct usb_serial_port *port) |
426 | { | |
427 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
428 | int room = 0; | |
429 | unsigned long flags; | |
430 | ||
431 | dbg("%s - port %d", __FUNCTION__, port->number); | |
432 | ||
433 | spin_lock_irqsave(&priv->lock, flags); | |
434 | room = pl2303_buf_space_avail(priv->buf); | |
435 | spin_unlock_irqrestore(&priv->lock, flags); | |
436 | ||
437 | dbg("%s - returns %d", __FUNCTION__, room); | |
438 | return room; | |
439 | } | |
440 | ||
441 | static int pl2303_chars_in_buffer(struct usb_serial_port *port) | |
442 | { | |
443 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
444 | int chars = 0; | |
445 | unsigned long flags; | |
446 | ||
447 | dbg("%s - port %d", __FUNCTION__, port->number); | |
448 | ||
449 | spin_lock_irqsave(&priv->lock, flags); | |
450 | chars = pl2303_buf_data_avail(priv->buf); | |
451 | spin_unlock_irqrestore(&priv->lock, flags); | |
452 | ||
453 | dbg("%s - returns %d", __FUNCTION__, chars); | |
454 | return chars; | |
455 | } | |
456 | ||
372db8a7 TG |
457 | static void pl2303_set_termios(struct usb_serial_port *port, |
458 | struct termios *old_termios) | |
1da177e4 LT |
459 | { |
460 | struct usb_serial *serial = port->serial; | |
461 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
462 | unsigned long flags; | |
463 | unsigned int cflag; | |
464 | unsigned char *buf; | |
465 | int baud; | |
466 | int i; | |
467 | u8 control; | |
468 | ||
469 | dbg("%s - port %d", __FUNCTION__, port->number); | |
470 | ||
471 | if ((!port->tty) || (!port->tty->termios)) { | |
472 | dbg("%s - no tty structures", __FUNCTION__); | |
473 | return; | |
474 | } | |
475 | ||
476 | spin_lock_irqsave(&priv->lock, flags); | |
477 | if (!priv->termios_initialized) { | |
478 | *(port->tty->termios) = tty_std_termios; | |
372db8a7 TG |
479 | port->tty->termios->c_cflag = B9600 | CS8 | CREAD | |
480 | HUPCL | CLOCAL; | |
1da177e4 LT |
481 | priv->termios_initialized = 1; |
482 | } | |
483 | spin_unlock_irqrestore(&priv->lock, flags); | |
484 | ||
485 | cflag = port->tty->termios->c_cflag; | |
486 | /* check that they really want us to change something */ | |
487 | if (old_termios) { | |
488 | if ((cflag == old_termios->c_cflag) && | |
372db8a7 TG |
489 | (RELEVANT_IFLAG(port->tty->termios->c_iflag) == |
490 | RELEVANT_IFLAG(old_termios->c_iflag))) { | |
491 | dbg("%s - nothing to change...", __FUNCTION__); | |
492 | return; | |
1da177e4 LT |
493 | } |
494 | } | |
495 | ||
372db8a7 | 496 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 LT |
497 | if (!buf) { |
498 | dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
499 | return; | |
500 | } | |
1da177e4 | 501 | |
372db8a7 TG |
502 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
503 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
504 | 0, 0, buf, 7, 100); | |
505 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
506 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
507 | |
508 | if (cflag & CSIZE) { | |
509 | switch (cflag & CSIZE) { | |
510 | case CS5: buf[6] = 5; break; | |
511 | case CS6: buf[6] = 6; break; | |
512 | case CS7: buf[6] = 7; break; | |
513 | default: | |
514 | case CS8: buf[6] = 8; break; | |
515 | } | |
516 | dbg("%s - data bits = %d", __FUNCTION__, buf[6]); | |
517 | } | |
518 | ||
519 | baud = 0; | |
520 | switch (cflag & CBAUD) { | |
521 | case B0: baud = 0; break; | |
522 | case B75: baud = 75; break; | |
523 | case B150: baud = 150; break; | |
524 | case B300: baud = 300; break; | |
525 | case B600: baud = 600; break; | |
526 | case B1200: baud = 1200; break; | |
527 | case B1800: baud = 1800; break; | |
528 | case B2400: baud = 2400; break; | |
529 | case B4800: baud = 4800; break; | |
530 | case B9600: baud = 9600; break; | |
531 | case B19200: baud = 19200; break; | |
532 | case B38400: baud = 38400; break; | |
533 | case B57600: baud = 57600; break; | |
534 | case B115200: baud = 115200; break; | |
535 | case B230400: baud = 230400; break; | |
536 | case B460800: baud = 460800; break; | |
537 | default: | |
372db8a7 TG |
538 | dev_err(&port->dev, "pl2303 driver does not support" |
539 | " the baudrate requested (fix it)\n"); | |
1da177e4 LT |
540 | break; |
541 | } | |
542 | dbg("%s - baud = %d", __FUNCTION__, baud); | |
543 | if (baud) { | |
544 | buf[0] = baud & 0xff; | |
545 | buf[1] = (baud >> 8) & 0xff; | |
546 | buf[2] = (baud >> 16) & 0xff; | |
547 | buf[3] = (baud >> 24) & 0xff; | |
548 | } | |
549 | ||
550 | /* For reference buf[4]=0 is 1 stop bits */ | |
551 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
552 | /* For reference buf[4]=2 is 2 stop bits */ | |
553 | if (cflag & CSTOPB) { | |
554 | buf[4] = 2; | |
555 | dbg("%s - stop bits = 2", __FUNCTION__); | |
556 | } else { | |
557 | buf[4] = 0; | |
558 | dbg("%s - stop bits = 1", __FUNCTION__); | |
559 | } | |
560 | ||
561 | if (cflag & PARENB) { | |
562 | /* For reference buf[5]=0 is none parity */ | |
563 | /* For reference buf[5]=1 is odd parity */ | |
564 | /* For reference buf[5]=2 is even parity */ | |
565 | /* For reference buf[5]=3 is mark parity */ | |
566 | /* For reference buf[5]=4 is space parity */ | |
567 | if (cflag & PARODD) { | |
568 | buf[5] = 1; | |
569 | dbg("%s - parity = odd", __FUNCTION__); | |
570 | } else { | |
571 | buf[5] = 2; | |
572 | dbg("%s - parity = even", __FUNCTION__); | |
573 | } | |
574 | } else { | |
575 | buf[5] = 0; | |
576 | dbg("%s - parity = none", __FUNCTION__); | |
577 | } | |
578 | ||
372db8a7 TG |
579 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
580 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
581 | 0, 0, buf, 7, 100); | |
582 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
583 | |
584 | /* change control lines if we are switching to or from B0 */ | |
585 | spin_lock_irqsave(&priv->lock, flags); | |
586 | control = priv->line_control; | |
587 | if ((cflag & CBAUD) == B0) | |
588 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
589 | else | |
590 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
591 | if (control != priv->line_control) { | |
592 | control = priv->line_control; | |
593 | spin_unlock_irqrestore(&priv->lock, flags); | |
594 | set_control_lines(serial->dev, control); | |
595 | } else { | |
596 | spin_unlock_irqrestore(&priv->lock, flags); | |
597 | } | |
372db8a7 | 598 | |
1da177e4 LT |
599 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
600 | ||
372db8a7 TG |
601 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
602 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
603 | 0, 0, buf, 7, 100); | |
604 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
605 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
606 | ||
607 | if (cflag & CRTSCTS) { | |
608 | __u16 index; | |
609 | if (priv->type == HX) | |
610 | index = 0x61; | |
611 | else | |
612 | index = 0x41; | |
372db8a7 | 613 | i = usb_control_msg(serial->dev, |
1da177e4 LT |
614 | usb_sndctrlpipe(serial->dev, 0), |
615 | VENDOR_WRITE_REQUEST, | |
616 | VENDOR_WRITE_REQUEST_TYPE, | |
617 | 0x0, index, NULL, 0, 100); | |
372db8a7 | 618 | dbg("0x40:0x1:0x0:0x%x %d", index, i); |
1da177e4 | 619 | } |
572d3138 TG |
620 | |
621 | kfree(buf); | |
622 | } | |
623 | ||
624 | static void pl2303_close(struct usb_serial_port *port, struct file *filp) | |
625 | { | |
626 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
627 | unsigned long flags; | |
628 | unsigned int c_cflag; | |
629 | int bps; | |
630 | long timeout; | |
631 | wait_queue_t wait; | |
632 | ||
633 | dbg("%s - port %d", __FUNCTION__, port->number); | |
634 | ||
635 | /* wait for data to drain from the buffer */ | |
636 | spin_lock_irqsave(&priv->lock, flags); | |
637 | timeout = PL2303_CLOSING_WAIT; | |
638 | init_waitqueue_entry(&wait, current); | |
639 | add_wait_queue(&port->tty->write_wait, &wait); | |
640 | for (;;) { | |
641 | set_current_state(TASK_INTERRUPTIBLE); | |
642 | if (pl2303_buf_data_avail(priv->buf) == 0 || | |
643 | timeout == 0 || signal_pending(current) || | |
644 | !usb_get_intfdata(port->serial->interface)) /* disconnect */ | |
645 | break; | |
646 | spin_unlock_irqrestore(&priv->lock, flags); | |
647 | timeout = schedule_timeout(timeout); | |
648 | spin_lock_irqsave(&priv->lock, flags); | |
649 | } | |
650 | set_current_state(TASK_RUNNING); | |
651 | remove_wait_queue(&port->tty->write_wait, &wait); | |
652 | /* clear out any remaining data in the buffer */ | |
653 | pl2303_buf_clear(priv->buf); | |
654 | spin_unlock_irqrestore(&priv->lock, flags); | |
655 | ||
656 | /* wait for characters to drain from the device */ | |
657 | /* (this is long enough for the entire 256 byte */ | |
658 | /* pl2303 hardware buffer to drain with no flow */ | |
659 | /* control for data rates of 1200 bps or more, */ | |
660 | /* for lower rates we should really know how much */ | |
661 | /* data is in the buffer to compute a delay */ | |
662 | /* that is not unnecessarily long) */ | |
663 | bps = tty_get_baud_rate(port->tty); | |
664 | if (bps > 1200) | |
665 | timeout = max((HZ*2560)/bps,HZ/10); | |
666 | else | |
667 | timeout = 2*HZ; | |
668 | schedule_timeout_interruptible(timeout); | |
669 | ||
670 | /* shutdown our urbs */ | |
671 | dbg("%s - shutting down urbs", __FUNCTION__); | |
672 | usb_kill_urb(port->write_urb); | |
673 | usb_kill_urb(port->read_urb); | |
674 | usb_kill_urb(port->interrupt_in_urb); | |
675 | ||
676 | if (port->tty) { | |
677 | c_cflag = port->tty->termios->c_cflag; | |
678 | if (c_cflag & HUPCL) { | |
679 | /* drop DTR and RTS */ | |
680 | spin_lock_irqsave(&priv->lock, flags); | |
681 | priv->line_control = 0; | |
682 | spin_unlock_irqrestore(&priv->lock, flags); | |
683 | set_control_lines(port->serial->dev, 0); | |
684 | } | |
685 | } | |
1da177e4 LT |
686 | } |
687 | ||
372db8a7 | 688 | static int pl2303_open(struct usb_serial_port *port, struct file *filp) |
1da177e4 LT |
689 | { |
690 | struct termios tmp_termios; | |
691 | struct usb_serial *serial = port->serial; | |
692 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
693 | unsigned char *buf; | |
694 | int result; | |
695 | ||
696 | dbg("%s - port %d", __FUNCTION__, port->number); | |
697 | ||
1694899f D |
698 | if (priv->type != HX) { |
699 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
700 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
701 | } | |
1da177e4 LT |
702 | |
703 | buf = kmalloc(10, GFP_KERNEL); | |
704 | if (buf==NULL) | |
705 | return -ENOMEM; | |
706 | ||
707 | #define FISH(a,b,c,d) \ | |
708 | result=usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev,0), \ | |
709 | b, a, c, d, buf, 1, 100); \ | |
710 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x",a,b,c,d,result,buf[0]); | |
711 | ||
712 | #define SOUP(a,b,c,d) \ | |
713 | result=usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0), \ | |
714 | b, a, c, d, NULL, 0, 100); \ | |
715 | dbg("0x%x:0x%x:0x%x:0x%x %d",a,b,c,d,result); | |
716 | ||
717 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
718 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 0); | |
719 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
720 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
721 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
722 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 1); | |
723 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
724 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
725 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0, 1); | |
726 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 1, 0); | |
727 | ||
728 | if (priv->type == HX) { | |
729 | /* HX chip */ | |
730 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x44); | |
731 | /* reset upstream data pipes */ | |
732 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 8, 0); | |
733 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 9, 0); | |
734 | } else { | |
735 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x24); | |
736 | } | |
737 | ||
738 | kfree(buf); | |
739 | ||
740 | /* Setup termios */ | |
741 | if (port->tty) { | |
372db8a7 | 742 | pl2303_set_termios(port, &tmp_termios); |
1da177e4 LT |
743 | } |
744 | ||
745 | //FIXME: need to assert RTS and DTR if CRTSCTS off | |
746 | ||
747 | dbg("%s - submitting read urb", __FUNCTION__); | |
748 | port->read_urb->dev = serial->dev; | |
372db8a7 | 749 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 750 | if (result) { |
372db8a7 TG |
751 | dev_err(&port->dev, "%s - failed submitting read urb," |
752 | " error %d\n", __FUNCTION__, result); | |
753 | pl2303_close(port, NULL); | |
1da177e4 LT |
754 | return -EPROTO; |
755 | } | |
756 | ||
757 | dbg("%s - submitting interrupt urb", __FUNCTION__); | |
758 | port->interrupt_in_urb->dev = serial->dev; | |
372db8a7 | 759 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 760 | if (result) { |
372db8a7 TG |
761 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
762 | " error %d\n", __FUNCTION__, result); | |
763 | pl2303_close(port, NULL); | |
1da177e4 LT |
764 | return -EPROTO; |
765 | } | |
766 | return 0; | |
767 | } | |
768 | ||
372db8a7 TG |
769 | static int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, |
770 | unsigned int set, unsigned int clear) | |
1da177e4 LT |
771 | { |
772 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
773 | unsigned long flags; | |
774 | u8 control; | |
775 | ||
6fdd8e8e FL |
776 | if (!usb_get_intfdata(port->serial->interface)) |
777 | return -ENODEV; | |
778 | ||
372db8a7 | 779 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
780 | if (set & TIOCM_RTS) |
781 | priv->line_control |= CONTROL_RTS; | |
782 | if (set & TIOCM_DTR) | |
783 | priv->line_control |= CONTROL_DTR; | |
784 | if (clear & TIOCM_RTS) | |
785 | priv->line_control &= ~CONTROL_RTS; | |
786 | if (clear & TIOCM_DTR) | |
787 | priv->line_control &= ~CONTROL_DTR; | |
788 | control = priv->line_control; | |
372db8a7 | 789 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 790 | |
372db8a7 | 791 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
792 | } |
793 | ||
372db8a7 | 794 | static int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) |
1da177e4 LT |
795 | { |
796 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
797 | unsigned long flags; | |
798 | unsigned int mcr; | |
799 | unsigned int status; | |
800 | unsigned int result; | |
801 | ||
802 | dbg("%s (%d)", __FUNCTION__, port->number); | |
803 | ||
6fdd8e8e FL |
804 | if (!usb_get_intfdata(port->serial->interface)) |
805 | return -ENODEV; | |
806 | ||
372db8a7 | 807 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
808 | mcr = priv->line_control; |
809 | status = priv->line_status; | |
372db8a7 | 810 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
811 | |
812 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
813 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
814 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
815 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
816 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
817 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
818 | ||
819 | dbg("%s - result = %x", __FUNCTION__, result); | |
820 | ||
821 | return result; | |
822 | } | |
823 | ||
824 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) | |
825 | { | |
826 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
827 | unsigned long flags; | |
828 | unsigned int prevstatus; | |
829 | unsigned int status; | |
830 | unsigned int changed; | |
831 | ||
372db8a7 | 832 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 833 | prevstatus = priv->line_status; |
372db8a7 | 834 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
835 | |
836 | while (1) { | |
837 | interruptible_sleep_on(&priv->delta_msr_wait); | |
838 | /* see if a signal did it */ | |
839 | if (signal_pending(current)) | |
840 | return -ERESTARTSYS; | |
372db8a7 TG |
841 | |
842 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 843 | status = priv->line_status; |
372db8a7 TG |
844 | spin_unlock_irqrestore(&priv->lock, flags); |
845 | ||
1da177e4 | 846 | changed=prevstatus^status; |
372db8a7 | 847 | |
1da177e4 LT |
848 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
849 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
850 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
851 | ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { | |
852 | return 0; | |
853 | } | |
854 | prevstatus = status; | |
855 | } | |
856 | /* NOTREACHED */ | |
857 | return 0; | |
858 | } | |
859 | ||
372db8a7 TG |
860 | static int pl2303_ioctl(struct usb_serial_port *port, struct file *file, |
861 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
862 | { |
863 | dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); | |
864 | ||
865 | switch (cmd) { | |
866 | case TIOCMIWAIT: | |
867 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); | |
868 | return wait_modem_info(port, arg); | |
869 | ||
870 | default: | |
871 | dbg("%s not supported = 0x%04x", __FUNCTION__, cmd); | |
872 | break; | |
873 | } | |
874 | ||
875 | return -ENOIOCTLCMD; | |
876 | } | |
877 | ||
372db8a7 | 878 | static void pl2303_break_ctl(struct usb_serial_port *port, int break_state) |
1da177e4 LT |
879 | { |
880 | struct usb_serial *serial = port->serial; | |
881 | u16 state; | |
882 | int result; | |
883 | ||
884 | dbg("%s - port %d", __FUNCTION__, port->number); | |
885 | ||
886 | if (break_state == 0) | |
887 | state = BREAK_OFF; | |
888 | else | |
889 | state = BREAK_ON; | |
890 | dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); | |
891 | ||
372db8a7 TG |
892 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
893 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
894 | 0, NULL, 0, 100); | |
1da177e4 LT |
895 | if (result) |
896 | dbg("%s - error sending break = %d", __FUNCTION__, result); | |
897 | } | |
898 | ||
372db8a7 | 899 | static void pl2303_shutdown(struct usb_serial *serial) |
1da177e4 LT |
900 | { |
901 | int i; | |
902 | struct pl2303_private *priv; | |
903 | ||
904 | dbg("%s", __FUNCTION__); | |
905 | ||
906 | for (i = 0; i < serial->num_ports; ++i) { | |
907 | priv = usb_get_serial_port_data(serial->port[i]); | |
908 | if (priv) { | |
909 | pl2303_buf_free(priv->buf); | |
910 | kfree(priv); | |
911 | usb_set_serial_port_data(serial->port[i], NULL); | |
912 | } | |
372db8a7 | 913 | } |
1da177e4 LT |
914 | } |
915 | ||
97bb13ec FL |
916 | static void pl2303_update_line_status(struct usb_serial_port *port, |
917 | unsigned char *data, | |
918 | unsigned int actual_length) | |
919 | { | |
920 | ||
921 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
922 | unsigned long flags; | |
923 | u8 status_idx = UART_STATE; | |
95f209f9 | 924 | u8 length = UART_STATE + 1; |
9c537616 | 925 | u16 idv, idp; |
97bb13ec | 926 | |
9c537616 TG |
927 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
928 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
929 | ||
930 | ||
931 | if (idv == SIEMENS_VENDOR_ID) { | |
932 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
933 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
934 | idp == SIEMENS_PRODUCT_ID_X75) { | |
935 | ||
936 | length = 1; | |
937 | status_idx = 0; | |
938 | } | |
97bb13ec FL |
939 | } |
940 | ||
941 | if (actual_length < length) | |
a009b75a | 942 | return; |
97bb13ec FL |
943 | |
944 | /* Save off the uart status for others to look at */ | |
945 | spin_lock_irqsave(&priv->lock, flags); | |
946 | priv->line_status = data[status_idx]; | |
947 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 948 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 949 | } |
1da177e4 | 950 | |
7d12e780 | 951 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 LT |
952 | { |
953 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1da177e4 | 954 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 955 | unsigned int actual_length = urb->actual_length; |
1da177e4 | 956 | int status; |
1da177e4 LT |
957 | |
958 | dbg("%s (%d)", __FUNCTION__, port->number); | |
959 | ||
960 | switch (urb->status) { | |
961 | case 0: | |
962 | /* success */ | |
963 | break; | |
964 | case -ECONNRESET: | |
965 | case -ENOENT: | |
966 | case -ESHUTDOWN: | |
967 | /* this urb is terminated, clean up */ | |
372db8a7 TG |
968 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
969 | urb->status); | |
1da177e4 LT |
970 | return; |
971 | default: | |
372db8a7 TG |
972 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, |
973 | urb->status); | |
1da177e4 LT |
974 | goto exit; |
975 | } | |
976 | ||
372db8a7 TG |
977 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
978 | urb->actual_length, urb->transfer_buffer); | |
979 | ||
97bb13ec | 980 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 981 | |
1da177e4 | 982 | exit: |
372db8a7 | 983 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 | 984 | if (status) |
372db8a7 TG |
985 | dev_err(&urb->dev->dev, |
986 | "%s - usb_submit_urb failed with result %d\n", | |
1da177e4 LT |
987 | __FUNCTION__, status); |
988 | } | |
989 | ||
7d12e780 | 990 | static void pl2303_read_bulk_callback(struct urb *urb) |
1da177e4 LT |
991 | { |
992 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
993 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
994 | struct tty_struct *tty; | |
995 | unsigned char *data = urb->transfer_buffer; | |
996 | unsigned long flags; | |
997 | int i; | |
998 | int result; | |
999 | u8 status; | |
1000 | char tty_flag; | |
1001 | ||
1002 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1003 | ||
1004 | if (urb->status) { | |
1005 | dbg("%s - urb->status = %d", __FUNCTION__, urb->status); | |
1006 | if (!port->open_count) { | |
1007 | dbg("%s - port is closed, exiting.", __FUNCTION__); | |
1008 | return; | |
1009 | } | |
1010 | if (urb->status == -EPROTO) { | |
372db8a7 TG |
1011 | /* PL2303 mysteriously fails with -EPROTO reschedule |
1012 | * the read */ | |
1013 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
1014 | __FUNCTION__); | |
1da177e4 LT |
1015 | urb->status = 0; |
1016 | urb->dev = port->serial->dev; | |
1017 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1018 | if (result) | |
372db8a7 TG |
1019 | dev_err(&urb->dev->dev, "%s - failed" |
1020 | " resubmitting read urb, error %d\n", | |
1021 | __FUNCTION__, result); | |
1da177e4 LT |
1022 | return; |
1023 | } | |
1024 | dbg("%s - unable to handle the error, exiting.", __FUNCTION__); | |
1025 | return; | |
1026 | } | |
1027 | ||
372db8a7 TG |
1028 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
1029 | urb->actual_length, data); | |
1da177e4 LT |
1030 | |
1031 | /* get tty_flag from status */ | |
1032 | tty_flag = TTY_NORMAL; | |
1033 | ||
1034 | spin_lock_irqsave(&priv->lock, flags); | |
1035 | status = priv->line_status; | |
1036 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
1037 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1038 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 LT |
1039 | |
1040 | /* break takes precedence over parity, */ | |
1041 | /* which takes precedence over framing errors */ | |
1042 | if (status & UART_BREAK_ERROR ) | |
1043 | tty_flag = TTY_BREAK; | |
1044 | else if (status & UART_PARITY_ERROR) | |
1045 | tty_flag = TTY_PARITY; | |
1046 | else if (status & UART_FRAME_ERROR) | |
1047 | tty_flag = TTY_FRAME; | |
1048 | dbg("%s - tty_flag = %d", __FUNCTION__, tty_flag); | |
1049 | ||
1050 | tty = port->tty; | |
1051 | if (tty && urb->actual_length) { | |
33f0f88f | 1052 | tty_buffer_request_room(tty, urb->actual_length + 1); |
1da177e4 LT |
1053 | /* overrun is special, not associated with a char */ |
1054 | if (status & UART_OVERRUN_ERROR) | |
1055 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
33f0f88f | 1056 | for (i = 0; i < urb->actual_length; ++i) |
372db8a7 TG |
1057 | tty_insert_flip_char(tty, data[i], tty_flag); |
1058 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1059 | } |
1060 | ||
1061 | /* Schedule the next read _if_ we are still open */ | |
1062 | if (port->open_count) { | |
1063 | urb->dev = port->serial->dev; | |
1064 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1065 | if (result) | |
372db8a7 TG |
1066 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
1067 | " read urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1068 | } |
1069 | ||
1070 | return; | |
1071 | } | |
1072 | ||
7d12e780 | 1073 | static void pl2303_write_bulk_callback(struct urb *urb) |
1da177e4 LT |
1074 | { |
1075 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1076 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1077 | int result; | |
1078 | ||
1079 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1080 | ||
1081 | switch (urb->status) { | |
1082 | case 0: | |
1083 | /* success */ | |
1084 | break; | |
1085 | case -ECONNRESET: | |
1086 | case -ENOENT: | |
1087 | case -ESHUTDOWN: | |
1088 | /* this urb is terminated, clean up */ | |
372db8a7 TG |
1089 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
1090 | urb->status); | |
1da177e4 LT |
1091 | priv->write_urb_in_use = 0; |
1092 | return; | |
1093 | default: | |
1094 | /* error in the urb, so we have to resubmit it */ | |
1095 | dbg("%s - Overflow in write", __FUNCTION__); | |
372db8a7 TG |
1096 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, |
1097 | urb->status); | |
1da177e4 LT |
1098 | port->write_urb->transfer_buffer_length = 1; |
1099 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 1100 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1101 | if (result) |
372db8a7 TG |
1102 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
1103 | " urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1104 | else |
1105 | return; | |
1106 | } | |
1107 | ||
1108 | priv->write_urb_in_use = 0; | |
1109 | ||
1110 | /* send any buffered data */ | |
1111 | pl2303_send(port); | |
1112 | } | |
1113 | ||
572d3138 TG |
1114 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1115 | static struct usb_serial_driver pl2303_device = { | |
1116 | .driver = { | |
1117 | .owner = THIS_MODULE, | |
1118 | .name = "pl2303", | |
1119 | }, | |
1120 | .id_table = id_table, | |
1121 | .num_interrupt_in = NUM_DONT_CARE, | |
1122 | .num_bulk_in = 1, | |
1123 | .num_bulk_out = 1, | |
1124 | .num_ports = 1, | |
1125 | .open = pl2303_open, | |
1126 | .close = pl2303_close, | |
1127 | .write = pl2303_write, | |
1128 | .ioctl = pl2303_ioctl, | |
1129 | .break_ctl = pl2303_break_ctl, | |
1130 | .set_termios = pl2303_set_termios, | |
1131 | .tiocmget = pl2303_tiocmget, | |
1132 | .tiocmset = pl2303_tiocmset, | |
1133 | .read_bulk_callback = pl2303_read_bulk_callback, | |
1134 | .read_int_callback = pl2303_read_int_callback, | |
1135 | .write_bulk_callback = pl2303_write_bulk_callback, | |
1136 | .write_room = pl2303_write_room, | |
1137 | .chars_in_buffer = pl2303_chars_in_buffer, | |
1138 | .attach = pl2303_startup, | |
1139 | .shutdown = pl2303_shutdown, | |
1140 | }; | |
1da177e4 | 1141 | |
372db8a7 | 1142 | static int __init pl2303_init(void) |
1da177e4 LT |
1143 | { |
1144 | int retval; | |
372db8a7 | 1145 | |
1da177e4 LT |
1146 | retval = usb_serial_register(&pl2303_device); |
1147 | if (retval) | |
1148 | goto failed_usb_serial_register; | |
1149 | retval = usb_register(&pl2303_driver); | |
1150 | if (retval) | |
1151 | goto failed_usb_register; | |
17a882fc | 1152 | info(DRIVER_DESC); |
1da177e4 LT |
1153 | return 0; |
1154 | failed_usb_register: | |
1155 | usb_serial_deregister(&pl2303_device); | |
1156 | failed_usb_serial_register: | |
1157 | return retval; | |
1158 | } | |
1159 | ||
372db8a7 | 1160 | static void __exit pl2303_exit(void) |
1da177e4 | 1161 | { |
372db8a7 TG |
1162 | usb_deregister(&pl2303_driver); |
1163 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
1164 | } |
1165 | ||
1da177e4 LT |
1166 | module_init(pl2303_init); |
1167 | module_exit(pl2303_exit); | |
1168 | ||
1169 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1170 | MODULE_LICENSE("GPL"); |
1171 | ||
1172 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1173 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1174 |