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) }, |
1da177e4 LT |
85 | { } /* Terminating entry */ |
86 | }; | |
87 | ||
372db8a7 | 88 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
89 | |
90 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
91 | .name = "pl2303", |
92 | .probe = usb_serial_probe, | |
93 | .disconnect = usb_serial_disconnect, | |
94 | .id_table = id_table, | |
ba9dc657 | 95 | .no_dynamic_id = 1, |
1da177e4 LT |
96 | }; |
97 | ||
98 | #define SET_LINE_REQUEST_TYPE 0x21 | |
99 | #define SET_LINE_REQUEST 0x20 | |
100 | ||
101 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
102 | #define SET_CONTROL_REQUEST 0x22 | |
103 | #define CONTROL_DTR 0x01 | |
104 | #define CONTROL_RTS 0x02 | |
105 | ||
106 | #define BREAK_REQUEST_TYPE 0x21 | |
107 | #define BREAK_REQUEST 0x23 | |
108 | #define BREAK_ON 0xffff | |
109 | #define BREAK_OFF 0x0000 | |
110 | ||
111 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
112 | #define GET_LINE_REQUEST 0x21 | |
113 | ||
114 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
115 | #define VENDOR_WRITE_REQUEST 0x01 | |
116 | ||
117 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
118 | #define VENDOR_READ_REQUEST 0x01 | |
119 | ||
120 | #define UART_STATE 0x08 | |
121 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
122 | #define UART_DCD 0x01 | |
123 | #define UART_DSR 0x02 | |
124 | #define UART_BREAK_ERROR 0x04 | |
125 | #define UART_RING 0x08 | |
126 | #define UART_FRAME_ERROR 0x10 | |
127 | #define UART_PARITY_ERROR 0x20 | |
128 | #define UART_OVERRUN_ERROR 0x40 | |
129 | #define UART_CTS 0x80 | |
130 | ||
1da177e4 LT |
131 | |
132 | enum pl2303_type { | |
133 | type_0, /* don't know the difference between type 0 and */ | |
134 | type_1, /* type 1, until someone from prolific tells us... */ | |
135 | HX, /* HX version of the pl2303 chip */ | |
136 | }; | |
137 | ||
138 | struct pl2303_private { | |
139 | spinlock_t lock; | |
140 | struct pl2303_buf *buf; | |
141 | int write_urb_in_use; | |
142 | wait_queue_head_t delta_msr_wait; | |
143 | u8 line_control; | |
144 | u8 line_status; | |
145 | u8 termios_initialized; | |
146 | enum pl2303_type type; | |
147 | }; | |
148 | ||
572d3138 TG |
149 | /* |
150 | * pl2303_buf_alloc | |
151 | * | |
152 | * Allocate a circular buffer and all associated memory. | |
153 | */ | |
154 | static 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; | |
173 | ||
174 | return pb; | |
175 | } | |
176 | ||
177 | /* | |
178 | * pl2303_buf_free | |
179 | * | |
180 | * Free the buffer and all associated memory. | |
181 | */ | |
182 | static 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 | */ | |
195 | static 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 | */ | |
208 | static 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 | */ | |
222 | static 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 | */ | |
238 | static 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 | */ | |
277 | static 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 | } | |
1da177e4 | 307 | |
372db8a7 | 308 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
309 | { |
310 | struct pl2303_private *priv; | |
311 | enum pl2303_type type = type_0; | |
312 | int i; | |
313 | ||
314 | if (serial->dev->descriptor.bDeviceClass == 0x02) | |
315 | type = type_0; | |
316 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
317 | type = HX; | |
318 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
319 | type = type_1; | |
320 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
321 | type = type_1; | |
322 | dbg("device type: %d", type); | |
323 | ||
324 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 325 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
326 | if (!priv) |
327 | goto cleanup; | |
1da177e4 LT |
328 | spin_lock_init(&priv->lock); |
329 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
330 | if (priv->buf == NULL) { | |
331 | kfree(priv); | |
332 | goto cleanup; | |
333 | } | |
334 | init_waitqueue_head(&priv->delta_msr_wait); | |
335 | priv->type = type; | |
336 | usb_set_serial_port_data(serial->port[i], priv); | |
337 | } | |
338 | return 0; | |
339 | ||
340 | cleanup: | |
341 | for (--i; i>=0; --i) { | |
342 | priv = usb_get_serial_port_data(serial->port[i]); | |
343 | pl2303_buf_free(priv->buf); | |
344 | kfree(priv); | |
345 | usb_set_serial_port_data(serial->port[i], NULL); | |
346 | } | |
347 | return -ENOMEM; | |
348 | } | |
349 | ||
372db8a7 | 350 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
351 | { |
352 | int retval; | |
353 | ||
372db8a7 TG |
354 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
355 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
356 | value, 0, NULL, 0, 100); | |
1da177e4 LT |
357 | dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); |
358 | return retval; | |
359 | } | |
360 | ||
1da177e4 LT |
361 | static void pl2303_send(struct usb_serial_port *port) |
362 | { | |
363 | int count, result; | |
364 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
365 | unsigned long flags; | |
366 | ||
367 | dbg("%s - port %d", __FUNCTION__, port->number); | |
368 | ||
369 | spin_lock_irqsave(&priv->lock, flags); | |
370 | ||
371 | if (priv->write_urb_in_use) { | |
372 | spin_unlock_irqrestore(&priv->lock, flags); | |
373 | return; | |
374 | } | |
375 | ||
376 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 377 | port->bulk_out_size); |
1da177e4 LT |
378 | |
379 | if (count == 0) { | |
380 | spin_unlock_irqrestore(&priv->lock, flags); | |
381 | return; | |
382 | } | |
383 | ||
384 | priv->write_urb_in_use = 1; | |
385 | ||
386 | spin_unlock_irqrestore(&priv->lock, flags); | |
387 | ||
372db8a7 TG |
388 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, |
389 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
390 | |
391 | port->write_urb->transfer_buffer_length = count; | |
392 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 393 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 394 | if (result) { |
372db8a7 TG |
395 | dev_err(&port->dev, "%s - failed submitting write urb," |
396 | " error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
397 | priv->write_urb_in_use = 0; |
398 | // TODO: reschedule pl2303_send | |
399 | } | |
400 | ||
cf2c7481 | 401 | usb_serial_port_softint(port); |
1da177e4 LT |
402 | } |
403 | ||
572d3138 TG |
404 | static 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 | ||
1da177e4 LT |
424 | static int pl2303_write_room(struct usb_serial_port *port) |
425 | { | |
426 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
427 | int room = 0; | |
428 | unsigned long flags; | |
429 | ||
430 | dbg("%s - port %d", __FUNCTION__, port->number); | |
431 | ||
432 | spin_lock_irqsave(&priv->lock, flags); | |
433 | room = pl2303_buf_space_avail(priv->buf); | |
434 | spin_unlock_irqrestore(&priv->lock, flags); | |
435 | ||
436 | dbg("%s - returns %d", __FUNCTION__, room); | |
437 | return room; | |
438 | } | |
439 | ||
440 | static int pl2303_chars_in_buffer(struct usb_serial_port *port) | |
441 | { | |
442 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
443 | int chars = 0; | |
444 | unsigned long flags; | |
445 | ||
446 | dbg("%s - port %d", __FUNCTION__, port->number); | |
447 | ||
448 | spin_lock_irqsave(&priv->lock, flags); | |
449 | chars = pl2303_buf_data_avail(priv->buf); | |
450 | spin_unlock_irqrestore(&priv->lock, flags); | |
451 | ||
452 | dbg("%s - returns %d", __FUNCTION__, chars); | |
453 | return chars; | |
454 | } | |
455 | ||
372db8a7 TG |
456 | static void pl2303_set_termios(struct usb_serial_port *port, |
457 | struct termios *old_termios) | |
1da177e4 LT |
458 | { |
459 | struct usb_serial *serial = port->serial; | |
460 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
461 | unsigned long flags; | |
462 | unsigned int cflag; | |
463 | unsigned char *buf; | |
464 | int baud; | |
465 | int i; | |
466 | u8 control; | |
467 | ||
468 | dbg("%s - port %d", __FUNCTION__, port->number); | |
469 | ||
470 | if ((!port->tty) || (!port->tty->termios)) { | |
471 | dbg("%s - no tty structures", __FUNCTION__); | |
472 | return; | |
473 | } | |
474 | ||
475 | spin_lock_irqsave(&priv->lock, flags); | |
476 | if (!priv->termios_initialized) { | |
477 | *(port->tty->termios) = tty_std_termios; | |
372db8a7 TG |
478 | port->tty->termios->c_cflag = B9600 | CS8 | CREAD | |
479 | HUPCL | CLOCAL; | |
1da177e4 LT |
480 | priv->termios_initialized = 1; |
481 | } | |
482 | spin_unlock_irqrestore(&priv->lock, flags); | |
483 | ||
484 | cflag = port->tty->termios->c_cflag; | |
485 | /* check that they really want us to change something */ | |
486 | if (old_termios) { | |
487 | if ((cflag == old_termios->c_cflag) && | |
372db8a7 TG |
488 | (RELEVANT_IFLAG(port->tty->termios->c_iflag) == |
489 | RELEVANT_IFLAG(old_termios->c_iflag))) { | |
490 | dbg("%s - nothing to change...", __FUNCTION__); | |
491 | return; | |
1da177e4 LT |
492 | } |
493 | } | |
494 | ||
372db8a7 | 495 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 LT |
496 | if (!buf) { |
497 | dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
498 | return; | |
499 | } | |
1da177e4 | 500 | |
372db8a7 TG |
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]); | |
1da177e4 LT |
506 | |
507 | if (cflag & CSIZE) { | |
508 | switch (cflag & CSIZE) { | |
509 | case CS5: buf[6] = 5; break; | |
510 | case CS6: buf[6] = 6; break; | |
511 | case CS7: buf[6] = 7; break; | |
512 | default: | |
513 | case CS8: buf[6] = 8; break; | |
514 | } | |
515 | dbg("%s - data bits = %d", __FUNCTION__, buf[6]); | |
516 | } | |
517 | ||
518 | baud = 0; | |
519 | switch (cflag & CBAUD) { | |
520 | case B0: baud = 0; break; | |
521 | case B75: baud = 75; break; | |
522 | case B150: baud = 150; break; | |
523 | case B300: baud = 300; break; | |
524 | case B600: baud = 600; break; | |
525 | case B1200: baud = 1200; break; | |
526 | case B1800: baud = 1800; break; | |
527 | case B2400: baud = 2400; break; | |
528 | case B4800: baud = 4800; break; | |
529 | case B9600: baud = 9600; break; | |
530 | case B19200: baud = 19200; break; | |
531 | case B38400: baud = 38400; break; | |
532 | case B57600: baud = 57600; break; | |
533 | case B115200: baud = 115200; break; | |
534 | case B230400: baud = 230400; break; | |
535 | case B460800: baud = 460800; break; | |
536 | default: | |
372db8a7 TG |
537 | dev_err(&port->dev, "pl2303 driver does not support" |
538 | " the baudrate requested (fix it)\n"); | |
1da177e4 LT |
539 | break; |
540 | } | |
541 | dbg("%s - baud = %d", __FUNCTION__, baud); | |
542 | if (baud) { | |
543 | buf[0] = baud & 0xff; | |
544 | buf[1] = (baud >> 8) & 0xff; | |
545 | buf[2] = (baud >> 16) & 0xff; | |
546 | buf[3] = (baud >> 24) & 0xff; | |
547 | } | |
548 | ||
549 | /* For reference buf[4]=0 is 1 stop bits */ | |
550 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
551 | /* For reference buf[4]=2 is 2 stop bits */ | |
552 | if (cflag & CSTOPB) { | |
553 | buf[4] = 2; | |
554 | dbg("%s - stop bits = 2", __FUNCTION__); | |
555 | } else { | |
556 | buf[4] = 0; | |
557 | dbg("%s - stop bits = 1", __FUNCTION__); | |
558 | } | |
559 | ||
560 | if (cflag & PARENB) { | |
561 | /* For reference buf[5]=0 is none parity */ | |
562 | /* For reference buf[5]=1 is odd parity */ | |
563 | /* For reference buf[5]=2 is even parity */ | |
564 | /* For reference buf[5]=3 is mark parity */ | |
565 | /* For reference buf[5]=4 is space parity */ | |
566 | if (cflag & PARODD) { | |
567 | buf[5] = 1; | |
568 | dbg("%s - parity = odd", __FUNCTION__); | |
569 | } else { | |
570 | buf[5] = 2; | |
571 | dbg("%s - parity = even", __FUNCTION__); | |
572 | } | |
573 | } else { | |
574 | buf[5] = 0; | |
575 | dbg("%s - parity = none", __FUNCTION__); | |
576 | } | |
577 | ||
372db8a7 TG |
578 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
579 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
580 | 0, 0, buf, 7, 100); | |
581 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
582 | |
583 | /* change control lines if we are switching to or from B0 */ | |
584 | spin_lock_irqsave(&priv->lock, flags); | |
585 | control = priv->line_control; | |
586 | if ((cflag & CBAUD) == B0) | |
587 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
588 | else | |
589 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
590 | if (control != priv->line_control) { | |
591 | control = priv->line_control; | |
592 | spin_unlock_irqrestore(&priv->lock, flags); | |
593 | set_control_lines(serial->dev, control); | |
594 | } else { | |
595 | spin_unlock_irqrestore(&priv->lock, flags); | |
596 | } | |
372db8a7 | 597 | |
1da177e4 LT |
598 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
599 | ||
372db8a7 TG |
600 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
601 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
602 | 0, 0, buf, 7, 100); | |
603 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
604 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
605 | ||
606 | if (cflag & CRTSCTS) { | |
607 | __u16 index; | |
608 | if (priv->type == HX) | |
609 | index = 0x61; | |
610 | else | |
611 | index = 0x41; | |
372db8a7 | 612 | i = usb_control_msg(serial->dev, |
1da177e4 LT |
613 | usb_sndctrlpipe(serial->dev, 0), |
614 | VENDOR_WRITE_REQUEST, | |
615 | VENDOR_WRITE_REQUEST_TYPE, | |
616 | 0x0, index, NULL, 0, 100); | |
372db8a7 | 617 | dbg("0x40:0x1:0x0:0x%x %d", index, i); |
1da177e4 | 618 | } |
572d3138 TG |
619 | |
620 | kfree(buf); | |
621 | } | |
622 | ||
623 | static 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); | |
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); | |
668 | ||
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 | } | |
1da177e4 LT |
685 | } |
686 | ||
372db8a7 | 687 | static int pl2303_open(struct usb_serial_port *port, struct file *filp) |
1da177e4 LT |
688 | { |
689 | struct termios tmp_termios; | |
690 | struct usb_serial *serial = port->serial; | |
691 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
692 | unsigned char *buf; | |
693 | int result; | |
694 | ||
695 | dbg("%s - port %d", __FUNCTION__, port->number); | |
696 | ||
1694899f D |
697 | if (priv->type != HX) { |
698 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
699 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
700 | } | |
1da177e4 LT |
701 | |
702 | buf = kmalloc(10, GFP_KERNEL); | |
703 | if (buf==NULL) | |
704 | return -ENOMEM; | |
705 | ||
706 | #define FISH(a,b,c,d) \ | |
707 | result=usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev,0), \ | |
708 | b, a, c, d, buf, 1, 100); \ | |
709 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x",a,b,c,d,result,buf[0]); | |
710 | ||
711 | #define SOUP(a,b,c,d) \ | |
712 | result=usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0), \ | |
713 | b, a, c, d, NULL, 0, 100); \ | |
714 | dbg("0x%x:0x%x:0x%x:0x%x %d",a,b,c,d,result); | |
715 | ||
716 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
717 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 0); | |
718 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
719 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
720 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
721 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 1); | |
722 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
723 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
724 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0, 1); | |
725 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 1, 0); | |
726 | ||
727 | if (priv->type == HX) { | |
728 | /* HX chip */ | |
729 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x44); | |
730 | /* reset upstream data pipes */ | |
731 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 8, 0); | |
732 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 9, 0); | |
733 | } else { | |
734 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x24); | |
735 | } | |
736 | ||
737 | kfree(buf); | |
738 | ||
739 | /* Setup termios */ | |
740 | if (port->tty) { | |
372db8a7 | 741 | pl2303_set_termios(port, &tmp_termios); |
1da177e4 LT |
742 | } |
743 | ||
744 | //FIXME: need to assert RTS and DTR if CRTSCTS off | |
745 | ||
746 | dbg("%s - submitting read urb", __FUNCTION__); | |
747 | port->read_urb->dev = serial->dev; | |
372db8a7 | 748 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 749 | if (result) { |
372db8a7 TG |
750 | dev_err(&port->dev, "%s - failed submitting read urb," |
751 | " error %d\n", __FUNCTION__, result); | |
752 | pl2303_close(port, NULL); | |
1da177e4 LT |
753 | return -EPROTO; |
754 | } | |
755 | ||
756 | dbg("%s - submitting interrupt urb", __FUNCTION__); | |
757 | port->interrupt_in_urb->dev = serial->dev; | |
372db8a7 | 758 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 759 | if (result) { |
372db8a7 TG |
760 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
761 | " error %d\n", __FUNCTION__, result); | |
762 | pl2303_close(port, NULL); | |
1da177e4 LT |
763 | return -EPROTO; |
764 | } | |
765 | return 0; | |
766 | } | |
767 | ||
372db8a7 TG |
768 | static int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, |
769 | unsigned int set, unsigned int clear) | |
1da177e4 LT |
770 | { |
771 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
772 | unsigned long flags; | |
773 | u8 control; | |
774 | ||
6fdd8e8e FL |
775 | if (!usb_get_intfdata(port->serial->interface)) |
776 | return -ENODEV; | |
777 | ||
372db8a7 | 778 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
779 | if (set & TIOCM_RTS) |
780 | priv->line_control |= CONTROL_RTS; | |
781 | if (set & TIOCM_DTR) | |
782 | priv->line_control |= CONTROL_DTR; | |
783 | if (clear & TIOCM_RTS) | |
784 | priv->line_control &= ~CONTROL_RTS; | |
785 | if (clear & TIOCM_DTR) | |
786 | priv->line_control &= ~CONTROL_DTR; | |
787 | control = priv->line_control; | |
372db8a7 | 788 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 789 | |
372db8a7 | 790 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
791 | } |
792 | ||
372db8a7 | 793 | static int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) |
1da177e4 LT |
794 | { |
795 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
796 | unsigned long flags; | |
797 | unsigned int mcr; | |
798 | unsigned int status; | |
799 | unsigned int result; | |
800 | ||
801 | dbg("%s (%d)", __FUNCTION__, port->number); | |
802 | ||
6fdd8e8e FL |
803 | if (!usb_get_intfdata(port->serial->interface)) |
804 | return -ENODEV; | |
805 | ||
372db8a7 | 806 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
807 | mcr = priv->line_control; |
808 | status = priv->line_status; | |
372db8a7 | 809 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
810 | |
811 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
812 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
813 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
814 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
815 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
816 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
817 | ||
818 | dbg("%s - result = %x", __FUNCTION__, result); | |
819 | ||
820 | return result; | |
821 | } | |
822 | ||
823 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) | |
824 | { | |
825 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
826 | unsigned long flags; | |
827 | unsigned int prevstatus; | |
828 | unsigned int status; | |
829 | unsigned int changed; | |
830 | ||
372db8a7 | 831 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 832 | prevstatus = priv->line_status; |
372db8a7 | 833 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
834 | |
835 | while (1) { | |
836 | interruptible_sleep_on(&priv->delta_msr_wait); | |
837 | /* see if a signal did it */ | |
838 | if (signal_pending(current)) | |
839 | return -ERESTARTSYS; | |
372db8a7 TG |
840 | |
841 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 842 | status = priv->line_status; |
372db8a7 TG |
843 | spin_unlock_irqrestore(&priv->lock, flags); |
844 | ||
1da177e4 | 845 | changed=prevstatus^status; |
372db8a7 | 846 | |
1da177e4 LT |
847 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
848 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
849 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
850 | ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { | |
851 | return 0; | |
852 | } | |
853 | prevstatus = status; | |
854 | } | |
855 | /* NOTREACHED */ | |
856 | return 0; | |
857 | } | |
858 | ||
372db8a7 TG |
859 | static int pl2303_ioctl(struct usb_serial_port *port, struct file *file, |
860 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
861 | { |
862 | dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); | |
863 | ||
864 | switch (cmd) { | |
865 | case TIOCMIWAIT: | |
866 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); | |
867 | return wait_modem_info(port, arg); | |
868 | ||
869 | default: | |
870 | dbg("%s not supported = 0x%04x", __FUNCTION__, cmd); | |
871 | break; | |
872 | } | |
873 | ||
874 | return -ENOIOCTLCMD; | |
875 | } | |
876 | ||
372db8a7 | 877 | static void pl2303_break_ctl(struct usb_serial_port *port, int break_state) |
1da177e4 LT |
878 | { |
879 | struct usb_serial *serial = port->serial; | |
880 | u16 state; | |
881 | int result; | |
882 | ||
883 | dbg("%s - port %d", __FUNCTION__, port->number); | |
884 | ||
885 | if (break_state == 0) | |
886 | state = BREAK_OFF; | |
887 | else | |
888 | state = BREAK_ON; | |
889 | dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); | |
890 | ||
372db8a7 TG |
891 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
892 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
893 | 0, NULL, 0, 100); | |
1da177e4 LT |
894 | if (result) |
895 | dbg("%s - error sending break = %d", __FUNCTION__, result); | |
896 | } | |
897 | ||
372db8a7 | 898 | static void pl2303_shutdown(struct usb_serial *serial) |
1da177e4 LT |
899 | { |
900 | int i; | |
901 | struct pl2303_private *priv; | |
902 | ||
903 | dbg("%s", __FUNCTION__); | |
904 | ||
905 | for (i = 0; i < serial->num_ports; ++i) { | |
906 | priv = usb_get_serial_port_data(serial->port[i]); | |
907 | if (priv) { | |
908 | pl2303_buf_free(priv->buf); | |
909 | kfree(priv); | |
910 | usb_set_serial_port_data(serial->port[i], NULL); | |
911 | } | |
372db8a7 | 912 | } |
1da177e4 LT |
913 | } |
914 | ||
97bb13ec FL |
915 | static void pl2303_update_line_status(struct usb_serial_port *port, |
916 | unsigned char *data, | |
917 | unsigned int actual_length) | |
918 | { | |
919 | ||
920 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
921 | unsigned long flags; | |
922 | u8 status_idx = UART_STATE; | |
95f209f9 | 923 | u8 length = UART_STATE + 1; |
9c537616 | 924 | u16 idv, idp; |
97bb13ec | 925 | |
9c537616 TG |
926 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
927 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
928 | ||
929 | ||
930 | if (idv == SIEMENS_VENDOR_ID) { | |
931 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
932 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
933 | idp == SIEMENS_PRODUCT_ID_X75) { | |
934 | ||
935 | length = 1; | |
936 | status_idx = 0; | |
937 | } | |
97bb13ec FL |
938 | } |
939 | ||
940 | if (actual_length < length) | |
a009b75a | 941 | return; |
97bb13ec FL |
942 | |
943 | /* Save off the uart status for others to look at */ | |
944 | spin_lock_irqsave(&priv->lock, flags); | |
945 | priv->line_status = data[status_idx]; | |
946 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 947 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 948 | } |
1da177e4 | 949 | |
372db8a7 | 950 | static void pl2303_read_int_callback(struct urb *urb, struct pt_regs *regs) |
1da177e4 LT |
951 | { |
952 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1da177e4 | 953 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 954 | unsigned int actual_length = urb->actual_length; |
1da177e4 | 955 | int status; |
1da177e4 LT |
956 | |
957 | dbg("%s (%d)", __FUNCTION__, port->number); | |
958 | ||
959 | switch (urb->status) { | |
960 | case 0: | |
961 | /* success */ | |
962 | break; | |
963 | case -ECONNRESET: | |
964 | case -ENOENT: | |
965 | case -ESHUTDOWN: | |
966 | /* this urb is terminated, clean up */ | |
372db8a7 TG |
967 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
968 | urb->status); | |
1da177e4 LT |
969 | return; |
970 | default: | |
372db8a7 TG |
971 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, |
972 | urb->status); | |
1da177e4 LT |
973 | goto exit; |
974 | } | |
975 | ||
372db8a7 TG |
976 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
977 | urb->actual_length, urb->transfer_buffer); | |
978 | ||
97bb13ec | 979 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 980 | |
1da177e4 | 981 | exit: |
372db8a7 | 982 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 | 983 | if (status) |
372db8a7 TG |
984 | dev_err(&urb->dev->dev, |
985 | "%s - usb_submit_urb failed with result %d\n", | |
1da177e4 LT |
986 | __FUNCTION__, status); |
987 | } | |
988 | ||
372db8a7 | 989 | static void pl2303_read_bulk_callback(struct urb *urb, struct pt_regs *regs) |
1da177e4 LT |
990 | { |
991 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
992 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
993 | struct tty_struct *tty; | |
994 | unsigned char *data = urb->transfer_buffer; | |
995 | unsigned long flags; | |
996 | int i; | |
997 | int result; | |
998 | u8 status; | |
999 | char tty_flag; | |
1000 | ||
1001 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1002 | ||
1003 | if (urb->status) { | |
1004 | dbg("%s - urb->status = %d", __FUNCTION__, urb->status); | |
1005 | if (!port->open_count) { | |
1006 | dbg("%s - port is closed, exiting.", __FUNCTION__); | |
1007 | return; | |
1008 | } | |
1009 | if (urb->status == -EPROTO) { | |
372db8a7 TG |
1010 | /* PL2303 mysteriously fails with -EPROTO reschedule |
1011 | * the read */ | |
1012 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
1013 | __FUNCTION__); | |
1da177e4 LT |
1014 | urb->status = 0; |
1015 | urb->dev = port->serial->dev; | |
1016 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1017 | if (result) | |
372db8a7 TG |
1018 | dev_err(&urb->dev->dev, "%s - failed" |
1019 | " resubmitting read urb, error %d\n", | |
1020 | __FUNCTION__, result); | |
1da177e4 LT |
1021 | return; |
1022 | } | |
1023 | dbg("%s - unable to handle the error, exiting.", __FUNCTION__); | |
1024 | return; | |
1025 | } | |
1026 | ||
372db8a7 TG |
1027 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
1028 | urb->actual_length, data); | |
1da177e4 LT |
1029 | |
1030 | /* get tty_flag from status */ | |
1031 | tty_flag = TTY_NORMAL; | |
1032 | ||
1033 | spin_lock_irqsave(&priv->lock, flags); | |
1034 | status = priv->line_status; | |
1035 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
1036 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1037 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 LT |
1038 | |
1039 | /* break takes precedence over parity, */ | |
1040 | /* which takes precedence over framing errors */ | |
1041 | if (status & UART_BREAK_ERROR ) | |
1042 | tty_flag = TTY_BREAK; | |
1043 | else if (status & UART_PARITY_ERROR) | |
1044 | tty_flag = TTY_PARITY; | |
1045 | else if (status & UART_FRAME_ERROR) | |
1046 | tty_flag = TTY_FRAME; | |
1047 | dbg("%s - tty_flag = %d", __FUNCTION__, tty_flag); | |
1048 | ||
1049 | tty = port->tty; | |
1050 | if (tty && urb->actual_length) { | |
33f0f88f | 1051 | tty_buffer_request_room(tty, urb->actual_length + 1); |
1da177e4 LT |
1052 | /* overrun is special, not associated with a char */ |
1053 | if (status & UART_OVERRUN_ERROR) | |
1054 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
33f0f88f | 1055 | for (i = 0; i < urb->actual_length; ++i) |
372db8a7 TG |
1056 | tty_insert_flip_char(tty, data[i], tty_flag); |
1057 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | /* Schedule the next read _if_ we are still open */ | |
1061 | if (port->open_count) { | |
1062 | urb->dev = port->serial->dev; | |
1063 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1064 | if (result) | |
372db8a7 TG |
1065 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
1066 | " read urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1067 | } |
1068 | ||
1069 | return; | |
1070 | } | |
1071 | ||
372db8a7 | 1072 | static void pl2303_write_bulk_callback(struct urb *urb, struct pt_regs *regs) |
1da177e4 LT |
1073 | { |
1074 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1075 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1076 | int result; | |
1077 | ||
1078 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1079 | ||
1080 | switch (urb->status) { | |
1081 | case 0: | |
1082 | /* success */ | |
1083 | break; | |
1084 | case -ECONNRESET: | |
1085 | case -ENOENT: | |
1086 | case -ESHUTDOWN: | |
1087 | /* this urb is terminated, clean up */ | |
372db8a7 TG |
1088 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
1089 | urb->status); | |
1da177e4 LT |
1090 | priv->write_urb_in_use = 0; |
1091 | return; | |
1092 | default: | |
1093 | /* error in the urb, so we have to resubmit it */ | |
1094 | dbg("%s - Overflow in write", __FUNCTION__); | |
372db8a7 TG |
1095 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, |
1096 | urb->status); | |
1da177e4 LT |
1097 | port->write_urb->transfer_buffer_length = 1; |
1098 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 1099 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1100 | if (result) |
372db8a7 TG |
1101 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
1102 | " urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1103 | else |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | priv->write_urb_in_use = 0; | |
1108 | ||
1109 | /* send any buffered data */ | |
1110 | pl2303_send(port); | |
1111 | } | |
1112 | ||
572d3138 TG |
1113 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1114 | static 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 | }; | |
1da177e4 | 1140 | |
372db8a7 | 1141 | static int __init pl2303_init(void) |
1da177e4 LT |
1142 | { |
1143 | int retval; | |
372db8a7 | 1144 | |
1da177e4 LT |
1145 | retval = usb_serial_register(&pl2303_device); |
1146 | if (retval) | |
1147 | goto failed_usb_serial_register; | |
1148 | retval = usb_register(&pl2303_driver); | |
1149 | if (retval) | |
1150 | goto failed_usb_register; | |
17a882fc | 1151 | info(DRIVER_DESC); |
1da177e4 LT |
1152 | return 0; |
1153 | failed_usb_register: | |
1154 | usb_serial_deregister(&pl2303_device); | |
1155 | failed_usb_serial_register: | |
1156 | return retval; | |
1157 | } | |
1158 | ||
372db8a7 | 1159 | static void __exit pl2303_exit(void) |
1da177e4 | 1160 | { |
372db8a7 TG |
1161 | usb_deregister(&pl2303_driver); |
1162 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
1163 | } |
1164 | ||
1da177e4 LT |
1165 | module_init(pl2303_init); |
1166 | module_exit(pl2303_exit); | |
1167 | ||
1168 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1169 | MODULE_LICENSE("GPL"); |
1170 | ||
1171 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1172 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1173 |