Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Prolific PL2303 USB to serial adaptor driver | |
3 | * | |
4d0dce3e | 4 | * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) |
1da177e4 LT |
5 | * Copyright (C) 2003 IBM Corp. |
6 | * | |
7 | * Original driver for 2.2.x by anonymous | |
8 | * | |
4d0dce3e GKH |
9 | * This program is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU General Public License version | |
11 | * 2 as published by the Free Software Foundation. | |
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) }, |
e7beb667 | 76 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
acbb36f1 | 77 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
78 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
79 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 80 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 81 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 82 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 83 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 84 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 85 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
b697f70f | 86 | { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_ID) }, |
2d94b981 | 87 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
1da177e4 LT |
88 | { } /* Terminating entry */ |
89 | }; | |
90 | ||
372db8a7 | 91 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
92 | |
93 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
94 | .name = "pl2303", |
95 | .probe = usb_serial_probe, | |
96 | .disconnect = usb_serial_disconnect, | |
97 | .id_table = id_table, | |
ba9dc657 | 98 | .no_dynamic_id = 1, |
1da177e4 LT |
99 | }; |
100 | ||
101 | #define SET_LINE_REQUEST_TYPE 0x21 | |
102 | #define SET_LINE_REQUEST 0x20 | |
103 | ||
104 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
105 | #define SET_CONTROL_REQUEST 0x22 | |
106 | #define CONTROL_DTR 0x01 | |
107 | #define CONTROL_RTS 0x02 | |
108 | ||
109 | #define BREAK_REQUEST_TYPE 0x21 | |
110 | #define BREAK_REQUEST 0x23 | |
111 | #define BREAK_ON 0xffff | |
112 | #define BREAK_OFF 0x0000 | |
113 | ||
114 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
115 | #define GET_LINE_REQUEST 0x21 | |
116 | ||
117 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
118 | #define VENDOR_WRITE_REQUEST 0x01 | |
119 | ||
120 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
121 | #define VENDOR_READ_REQUEST 0x01 | |
122 | ||
123 | #define UART_STATE 0x08 | |
124 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
125 | #define UART_DCD 0x01 | |
126 | #define UART_DSR 0x02 | |
127 | #define UART_BREAK_ERROR 0x04 | |
128 | #define UART_RING 0x08 | |
129 | #define UART_FRAME_ERROR 0x10 | |
130 | #define UART_PARITY_ERROR 0x20 | |
131 | #define UART_OVERRUN_ERROR 0x40 | |
132 | #define UART_CTS 0x80 | |
133 | ||
1da177e4 LT |
134 | |
135 | enum pl2303_type { | |
136 | type_0, /* don't know the difference between type 0 and */ | |
137 | type_1, /* type 1, until someone from prolific tells us... */ | |
138 | HX, /* HX version of the pl2303 chip */ | |
139 | }; | |
140 | ||
141 | struct pl2303_private { | |
142 | spinlock_t lock; | |
143 | struct pl2303_buf *buf; | |
144 | int write_urb_in_use; | |
145 | wait_queue_head_t delta_msr_wait; | |
146 | u8 line_control; | |
147 | u8 line_status; | |
148 | u8 termios_initialized; | |
149 | enum pl2303_type type; | |
150 | }; | |
151 | ||
572d3138 TG |
152 | /* |
153 | * pl2303_buf_alloc | |
154 | * | |
155 | * Allocate a circular buffer and all associated memory. | |
156 | */ | |
157 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) | |
158 | { | |
159 | struct pl2303_buf *pb; | |
160 | ||
161 | if (size == 0) | |
162 | return NULL; | |
163 | ||
5cbded58 | 164 | pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); |
572d3138 TG |
165 | if (pb == NULL) |
166 | return NULL; | |
167 | ||
168 | pb->buf_buf = kmalloc(size, GFP_KERNEL); | |
169 | if (pb->buf_buf == NULL) { | |
170 | kfree(pb); | |
171 | return NULL; | |
172 | } | |
173 | ||
174 | pb->buf_size = size; | |
175 | pb->buf_get = pb->buf_put = pb->buf_buf; | |
176 | ||
177 | return pb; | |
178 | } | |
179 | ||
180 | /* | |
181 | * pl2303_buf_free | |
182 | * | |
183 | * Free the buffer and all associated memory. | |
184 | */ | |
185 | static void pl2303_buf_free(struct pl2303_buf *pb) | |
186 | { | |
187 | if (pb) { | |
188 | kfree(pb->buf_buf); | |
189 | kfree(pb); | |
190 | } | |
191 | } | |
192 | ||
193 | /* | |
194 | * pl2303_buf_clear | |
195 | * | |
196 | * Clear out all data in the circular buffer. | |
197 | */ | |
198 | static void pl2303_buf_clear(struct pl2303_buf *pb) | |
199 | { | |
200 | if (pb != NULL) | |
201 | pb->buf_get = pb->buf_put; | |
202 | /* equivalent to a get of all data available */ | |
203 | } | |
204 | ||
205 | /* | |
206 | * pl2303_buf_data_avail | |
207 | * | |
208 | * Return the number of bytes of data available in the circular | |
209 | * buffer. | |
210 | */ | |
211 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) | |
212 | { | |
213 | if (pb == NULL) | |
214 | return 0; | |
215 | ||
216 | return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); | |
217 | } | |
218 | ||
219 | /* | |
220 | * pl2303_buf_space_avail | |
221 | * | |
222 | * Return the number of bytes of space available in the circular | |
223 | * buffer. | |
224 | */ | |
225 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) | |
226 | { | |
227 | if (pb == NULL) | |
228 | return 0; | |
229 | ||
230 | return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); | |
231 | } | |
232 | ||
233 | /* | |
234 | * pl2303_buf_put | |
235 | * | |
236 | * Copy data data from a user buffer and put it into the circular buffer. | |
237 | * Restrict to the amount of space available. | |
238 | * | |
239 | * Return the number of bytes copied. | |
240 | */ | |
241 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, | |
242 | unsigned int count) | |
243 | { | |
244 | unsigned int len; | |
245 | ||
246 | if (pb == NULL) | |
247 | return 0; | |
248 | ||
249 | len = pl2303_buf_space_avail(pb); | |
250 | if (count > len) | |
251 | count = len; | |
252 | ||
253 | if (count == 0) | |
254 | return 0; | |
255 | ||
256 | len = pb->buf_buf + pb->buf_size - pb->buf_put; | |
257 | if (count > len) { | |
258 | memcpy(pb->buf_put, buf, len); | |
259 | memcpy(pb->buf_buf, buf+len, count - len); | |
260 | pb->buf_put = pb->buf_buf + count - len; | |
261 | } else { | |
262 | memcpy(pb->buf_put, buf, count); | |
263 | if (count < len) | |
264 | pb->buf_put += count; | |
265 | else /* count == len */ | |
266 | pb->buf_put = pb->buf_buf; | |
267 | } | |
268 | ||
269 | return count; | |
270 | } | |
271 | ||
272 | /* | |
273 | * pl2303_buf_get | |
274 | * | |
275 | * Get data from the circular buffer and copy to the given buffer. | |
276 | * Restrict to the amount of data available. | |
277 | * | |
278 | * Return the number of bytes copied. | |
279 | */ | |
280 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, | |
281 | unsigned int count) | |
282 | { | |
283 | unsigned int len; | |
284 | ||
285 | if (pb == NULL) | |
286 | return 0; | |
287 | ||
288 | len = pl2303_buf_data_avail(pb); | |
289 | if (count > len) | |
290 | count = len; | |
291 | ||
292 | if (count == 0) | |
293 | return 0; | |
294 | ||
295 | len = pb->buf_buf + pb->buf_size - pb->buf_get; | |
296 | if (count > len) { | |
297 | memcpy(buf, pb->buf_get, len); | |
298 | memcpy(buf+len, pb->buf_buf, count - len); | |
299 | pb->buf_get = pb->buf_buf + count - len; | |
300 | } else { | |
301 | memcpy(buf, pb->buf_get, count); | |
302 | if (count < len) | |
303 | pb->buf_get += count; | |
304 | else /* count == len */ | |
305 | pb->buf_get = pb->buf_buf; | |
306 | } | |
307 | ||
308 | return count; | |
309 | } | |
1da177e4 | 310 | |
372db8a7 | 311 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
312 | { |
313 | struct pl2303_private *priv; | |
314 | enum pl2303_type type = type_0; | |
315 | int i; | |
316 | ||
317 | if (serial->dev->descriptor.bDeviceClass == 0x02) | |
318 | type = type_0; | |
319 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
320 | type = HX; | |
321 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
322 | type = type_1; | |
323 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
324 | type = type_1; | |
325 | dbg("device type: %d", type); | |
326 | ||
327 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 328 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
329 | if (!priv) |
330 | goto cleanup; | |
1da177e4 LT |
331 | spin_lock_init(&priv->lock); |
332 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
333 | if (priv->buf == NULL) { | |
334 | kfree(priv); | |
335 | goto cleanup; | |
336 | } | |
337 | init_waitqueue_head(&priv->delta_msr_wait); | |
338 | priv->type = type; | |
339 | usb_set_serial_port_data(serial->port[i], priv); | |
340 | } | |
341 | return 0; | |
342 | ||
343 | cleanup: | |
344 | for (--i; i>=0; --i) { | |
345 | priv = usb_get_serial_port_data(serial->port[i]); | |
346 | pl2303_buf_free(priv->buf); | |
347 | kfree(priv); | |
348 | usb_set_serial_port_data(serial->port[i], NULL); | |
349 | } | |
350 | return -ENOMEM; | |
351 | } | |
352 | ||
372db8a7 | 353 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
354 | { |
355 | int retval; | |
356 | ||
372db8a7 TG |
357 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
358 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
359 | value, 0, NULL, 0, 100); | |
1da177e4 LT |
360 | dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); |
361 | return retval; | |
362 | } | |
363 | ||
1da177e4 LT |
364 | static void pl2303_send(struct usb_serial_port *port) |
365 | { | |
366 | int count, result; | |
367 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
368 | unsigned long flags; | |
369 | ||
370 | dbg("%s - port %d", __FUNCTION__, port->number); | |
371 | ||
372 | spin_lock_irqsave(&priv->lock, flags); | |
373 | ||
374 | if (priv->write_urb_in_use) { | |
375 | spin_unlock_irqrestore(&priv->lock, flags); | |
376 | return; | |
377 | } | |
378 | ||
379 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 380 | port->bulk_out_size); |
1da177e4 LT |
381 | |
382 | if (count == 0) { | |
383 | spin_unlock_irqrestore(&priv->lock, flags); | |
384 | return; | |
385 | } | |
386 | ||
387 | priv->write_urb_in_use = 1; | |
388 | ||
389 | spin_unlock_irqrestore(&priv->lock, flags); | |
390 | ||
372db8a7 TG |
391 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, |
392 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
393 | |
394 | port->write_urb->transfer_buffer_length = count; | |
395 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 396 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 397 | if (result) { |
372db8a7 TG |
398 | dev_err(&port->dev, "%s - failed submitting write urb," |
399 | " error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
400 | priv->write_urb_in_use = 0; |
401 | // TODO: reschedule pl2303_send | |
402 | } | |
403 | ||
cf2c7481 | 404 | usb_serial_port_softint(port); |
1da177e4 LT |
405 | } |
406 | ||
572d3138 TG |
407 | static int pl2303_write(struct usb_serial_port *port, const unsigned char *buf, |
408 | int count) | |
409 | { | |
410 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
411 | unsigned long flags; | |
412 | ||
413 | dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); | |
414 | ||
415 | if (!count) | |
416 | return count; | |
417 | ||
418 | spin_lock_irqsave(&priv->lock, flags); | |
419 | count = pl2303_buf_put(priv->buf, buf, count); | |
420 | spin_unlock_irqrestore(&priv->lock, flags); | |
421 | ||
422 | pl2303_send(port); | |
423 | ||
424 | return count; | |
425 | } | |
426 | ||
1da177e4 LT |
427 | static int pl2303_write_room(struct usb_serial_port *port) |
428 | { | |
429 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
430 | int room = 0; | |
431 | unsigned long flags; | |
432 | ||
433 | dbg("%s - port %d", __FUNCTION__, port->number); | |
434 | ||
435 | spin_lock_irqsave(&priv->lock, flags); | |
436 | room = pl2303_buf_space_avail(priv->buf); | |
437 | spin_unlock_irqrestore(&priv->lock, flags); | |
438 | ||
439 | dbg("%s - returns %d", __FUNCTION__, room); | |
440 | return room; | |
441 | } | |
442 | ||
443 | static int pl2303_chars_in_buffer(struct usb_serial_port *port) | |
444 | { | |
445 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
446 | int chars = 0; | |
447 | unsigned long flags; | |
448 | ||
449 | dbg("%s - port %d", __FUNCTION__, port->number); | |
450 | ||
451 | spin_lock_irqsave(&priv->lock, flags); | |
452 | chars = pl2303_buf_data_avail(priv->buf); | |
453 | spin_unlock_irqrestore(&priv->lock, flags); | |
454 | ||
455 | dbg("%s - returns %d", __FUNCTION__, chars); | |
456 | return chars; | |
457 | } | |
458 | ||
372db8a7 | 459 | static void pl2303_set_termios(struct usb_serial_port *port, |
606d099c | 460 | struct ktermios *old_termios) |
1da177e4 LT |
461 | { |
462 | struct usb_serial *serial = port->serial; | |
463 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
464 | unsigned long flags; | |
465 | unsigned int cflag; | |
466 | unsigned char *buf; | |
467 | int baud; | |
468 | int i; | |
469 | u8 control; | |
470 | ||
471 | dbg("%s - port %d", __FUNCTION__, port->number); | |
472 | ||
473 | if ((!port->tty) || (!port->tty->termios)) { | |
474 | dbg("%s - no tty structures", __FUNCTION__); | |
475 | return; | |
476 | } | |
477 | ||
478 | spin_lock_irqsave(&priv->lock, flags); | |
479 | if (!priv->termios_initialized) { | |
480 | *(port->tty->termios) = tty_std_termios; | |
372db8a7 TG |
481 | port->tty->termios->c_cflag = B9600 | CS8 | CREAD | |
482 | HUPCL | CLOCAL; | |
1da177e4 LT |
483 | priv->termios_initialized = 1; |
484 | } | |
485 | spin_unlock_irqrestore(&priv->lock, flags); | |
486 | ||
487 | cflag = port->tty->termios->c_cflag; | |
1da177e4 | 488 | |
372db8a7 | 489 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 LT |
490 | if (!buf) { |
491 | dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); | |
492 | return; | |
493 | } | |
1da177e4 | 494 | |
372db8a7 TG |
495 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
496 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
497 | 0, 0, buf, 7, 100); | |
498 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
499 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
500 | |
501 | if (cflag & CSIZE) { | |
502 | switch (cflag & CSIZE) { | |
503 | case CS5: buf[6] = 5; break; | |
504 | case CS6: buf[6] = 6; break; | |
505 | case CS7: buf[6] = 7; break; | |
506 | default: | |
507 | case CS8: buf[6] = 8; break; | |
508 | } | |
509 | dbg("%s - data bits = %d", __FUNCTION__, buf[6]); | |
510 | } | |
511 | ||
e0c79f51 | 512 | baud = tty_get_baud_rate(port->tty);; |
1da177e4 LT |
513 | dbg("%s - baud = %d", __FUNCTION__, baud); |
514 | if (baud) { | |
515 | buf[0] = baud & 0xff; | |
516 | buf[1] = (baud >> 8) & 0xff; | |
517 | buf[2] = (baud >> 16) & 0xff; | |
518 | buf[3] = (baud >> 24) & 0xff; | |
519 | } | |
520 | ||
521 | /* For reference buf[4]=0 is 1 stop bits */ | |
522 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
523 | /* For reference buf[4]=2 is 2 stop bits */ | |
524 | if (cflag & CSTOPB) { | |
525 | buf[4] = 2; | |
526 | dbg("%s - stop bits = 2", __FUNCTION__); | |
527 | } else { | |
528 | buf[4] = 0; | |
529 | dbg("%s - stop bits = 1", __FUNCTION__); | |
530 | } | |
531 | ||
532 | if (cflag & PARENB) { | |
533 | /* For reference buf[5]=0 is none parity */ | |
534 | /* For reference buf[5]=1 is odd parity */ | |
535 | /* For reference buf[5]=2 is even parity */ | |
536 | /* For reference buf[5]=3 is mark parity */ | |
537 | /* For reference buf[5]=4 is space parity */ | |
538 | if (cflag & PARODD) { | |
539 | buf[5] = 1; | |
540 | dbg("%s - parity = odd", __FUNCTION__); | |
541 | } else { | |
542 | buf[5] = 2; | |
543 | dbg("%s - parity = even", __FUNCTION__); | |
544 | } | |
545 | } else { | |
546 | buf[5] = 0; | |
547 | dbg("%s - parity = none", __FUNCTION__); | |
548 | } | |
549 | ||
372db8a7 TG |
550 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
551 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
552 | 0, 0, buf, 7, 100); | |
553 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
554 | |
555 | /* change control lines if we are switching to or from B0 */ | |
556 | spin_lock_irqsave(&priv->lock, flags); | |
557 | control = priv->line_control; | |
558 | if ((cflag & CBAUD) == B0) | |
559 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
560 | else | |
561 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
562 | if (control != priv->line_control) { | |
563 | control = priv->line_control; | |
564 | spin_unlock_irqrestore(&priv->lock, flags); | |
565 | set_control_lines(serial->dev, control); | |
566 | } else { | |
567 | spin_unlock_irqrestore(&priv->lock, flags); | |
568 | } | |
372db8a7 | 569 | |
1da177e4 LT |
570 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
571 | ||
372db8a7 TG |
572 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
573 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
574 | 0, 0, buf, 7, 100); | |
575 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
576 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
577 | ||
578 | if (cflag & CRTSCTS) { | |
579 | __u16 index; | |
580 | if (priv->type == HX) | |
581 | index = 0x61; | |
582 | else | |
583 | index = 0x41; | |
372db8a7 | 584 | i = usb_control_msg(serial->dev, |
1da177e4 LT |
585 | usb_sndctrlpipe(serial->dev, 0), |
586 | VENDOR_WRITE_REQUEST, | |
587 | VENDOR_WRITE_REQUEST_TYPE, | |
588 | 0x0, index, NULL, 0, 100); | |
372db8a7 | 589 | dbg("0x40:0x1:0x0:0x%x %d", index, i); |
715f9527 | 590 | } else { |
591 | i = usb_control_msg(serial->dev, | |
592 | usb_sndctrlpipe(serial->dev, 0), | |
593 | VENDOR_WRITE_REQUEST, | |
594 | VENDOR_WRITE_REQUEST_TYPE, | |
595 | 0x0, 0x0, NULL, 0, 100); | |
596 | dbg ("0x40:0x1:0x0:0x0 %d", i); | |
1da177e4 | 597 | } |
572d3138 TG |
598 | |
599 | kfree(buf); | |
600 | } | |
601 | ||
602 | static void pl2303_close(struct usb_serial_port *port, struct file *filp) | |
603 | { | |
604 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
605 | unsigned long flags; | |
606 | unsigned int c_cflag; | |
607 | int bps; | |
608 | long timeout; | |
609 | wait_queue_t wait; | |
610 | ||
611 | dbg("%s - port %d", __FUNCTION__, port->number); | |
612 | ||
613 | /* wait for data to drain from the buffer */ | |
614 | spin_lock_irqsave(&priv->lock, flags); | |
615 | timeout = PL2303_CLOSING_WAIT; | |
616 | init_waitqueue_entry(&wait, current); | |
617 | add_wait_queue(&port->tty->write_wait, &wait); | |
618 | for (;;) { | |
619 | set_current_state(TASK_INTERRUPTIBLE); | |
620 | if (pl2303_buf_data_avail(priv->buf) == 0 || | |
621 | timeout == 0 || signal_pending(current) || | |
622 | !usb_get_intfdata(port->serial->interface)) /* disconnect */ | |
623 | break; | |
624 | spin_unlock_irqrestore(&priv->lock, flags); | |
625 | timeout = schedule_timeout(timeout); | |
626 | spin_lock_irqsave(&priv->lock, flags); | |
627 | } | |
628 | set_current_state(TASK_RUNNING); | |
629 | remove_wait_queue(&port->tty->write_wait, &wait); | |
630 | /* clear out any remaining data in the buffer */ | |
631 | pl2303_buf_clear(priv->buf); | |
632 | spin_unlock_irqrestore(&priv->lock, flags); | |
633 | ||
634 | /* wait for characters to drain from the device */ | |
635 | /* (this is long enough for the entire 256 byte */ | |
636 | /* pl2303 hardware buffer to drain with no flow */ | |
637 | /* control for data rates of 1200 bps or more, */ | |
638 | /* for lower rates we should really know how much */ | |
639 | /* data is in the buffer to compute a delay */ | |
640 | /* that is not unnecessarily long) */ | |
641 | bps = tty_get_baud_rate(port->tty); | |
642 | if (bps > 1200) | |
643 | timeout = max((HZ*2560)/bps,HZ/10); | |
644 | else | |
645 | timeout = 2*HZ; | |
646 | schedule_timeout_interruptible(timeout); | |
647 | ||
648 | /* shutdown our urbs */ | |
649 | dbg("%s - shutting down urbs", __FUNCTION__); | |
650 | usb_kill_urb(port->write_urb); | |
651 | usb_kill_urb(port->read_urb); | |
652 | usb_kill_urb(port->interrupt_in_urb); | |
653 | ||
654 | if (port->tty) { | |
655 | c_cflag = port->tty->termios->c_cflag; | |
656 | if (c_cflag & HUPCL) { | |
657 | /* drop DTR and RTS */ | |
658 | spin_lock_irqsave(&priv->lock, flags); | |
659 | priv->line_control = 0; | |
660 | spin_unlock_irqrestore(&priv->lock, flags); | |
661 | set_control_lines(port->serial->dev, 0); | |
662 | } | |
663 | } | |
1da177e4 LT |
664 | } |
665 | ||
372db8a7 | 666 | static int pl2303_open(struct usb_serial_port *port, struct file *filp) |
1da177e4 | 667 | { |
606d099c | 668 | struct ktermios tmp_termios; |
1da177e4 LT |
669 | struct usb_serial *serial = port->serial; |
670 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
671 | unsigned char *buf; | |
672 | int result; | |
673 | ||
674 | dbg("%s - port %d", __FUNCTION__, port->number); | |
675 | ||
1694899f D |
676 | if (priv->type != HX) { |
677 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
678 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
679 | } | |
1da177e4 LT |
680 | |
681 | buf = kmalloc(10, GFP_KERNEL); | |
682 | if (buf==NULL) | |
683 | return -ENOMEM; | |
684 | ||
685 | #define FISH(a,b,c,d) \ | |
686 | result=usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev,0), \ | |
687 | b, a, c, d, buf, 1, 100); \ | |
688 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x",a,b,c,d,result,buf[0]); | |
689 | ||
690 | #define SOUP(a,b,c,d) \ | |
691 | result=usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0), \ | |
692 | b, a, c, d, NULL, 0, 100); \ | |
693 | dbg("0x%x:0x%x:0x%x:0x%x %d",a,b,c,d,result); | |
694 | ||
695 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
696 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 0); | |
697 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
698 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
699 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
700 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 1); | |
701 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); | |
702 | FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); | |
703 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0, 1); | |
704 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 1, 0); | |
705 | ||
706 | if (priv->type == HX) { | |
707 | /* HX chip */ | |
708 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x44); | |
709 | /* reset upstream data pipes */ | |
710 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 8, 0); | |
711 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 9, 0); | |
712 | } else { | |
713 | SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x24); | |
714 | } | |
715 | ||
716 | kfree(buf); | |
717 | ||
718 | /* Setup termios */ | |
719 | if (port->tty) { | |
372db8a7 | 720 | pl2303_set_termios(port, &tmp_termios); |
1da177e4 LT |
721 | } |
722 | ||
723 | //FIXME: need to assert RTS and DTR if CRTSCTS off | |
724 | ||
725 | dbg("%s - submitting read urb", __FUNCTION__); | |
726 | port->read_urb->dev = serial->dev; | |
372db8a7 | 727 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 728 | if (result) { |
372db8a7 TG |
729 | dev_err(&port->dev, "%s - failed submitting read urb," |
730 | " error %d\n", __FUNCTION__, result); | |
731 | pl2303_close(port, NULL); | |
1da177e4 LT |
732 | return -EPROTO; |
733 | } | |
734 | ||
735 | dbg("%s - submitting interrupt urb", __FUNCTION__); | |
736 | port->interrupt_in_urb->dev = serial->dev; | |
372db8a7 | 737 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 738 | if (result) { |
372db8a7 TG |
739 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
740 | " error %d\n", __FUNCTION__, result); | |
741 | pl2303_close(port, NULL); | |
1da177e4 LT |
742 | return -EPROTO; |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
372db8a7 TG |
747 | static int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, |
748 | unsigned int set, unsigned int clear) | |
1da177e4 LT |
749 | { |
750 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
751 | unsigned long flags; | |
752 | u8 control; | |
753 | ||
6fdd8e8e FL |
754 | if (!usb_get_intfdata(port->serial->interface)) |
755 | return -ENODEV; | |
756 | ||
372db8a7 | 757 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
758 | if (set & TIOCM_RTS) |
759 | priv->line_control |= CONTROL_RTS; | |
760 | if (set & TIOCM_DTR) | |
761 | priv->line_control |= CONTROL_DTR; | |
762 | if (clear & TIOCM_RTS) | |
763 | priv->line_control &= ~CONTROL_RTS; | |
764 | if (clear & TIOCM_DTR) | |
765 | priv->line_control &= ~CONTROL_DTR; | |
766 | control = priv->line_control; | |
372db8a7 | 767 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 768 | |
372db8a7 | 769 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
770 | } |
771 | ||
372db8a7 | 772 | static int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) |
1da177e4 LT |
773 | { |
774 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
775 | unsigned long flags; | |
776 | unsigned int mcr; | |
777 | unsigned int status; | |
778 | unsigned int result; | |
779 | ||
780 | dbg("%s (%d)", __FUNCTION__, port->number); | |
781 | ||
6fdd8e8e FL |
782 | if (!usb_get_intfdata(port->serial->interface)) |
783 | return -ENODEV; | |
784 | ||
372db8a7 | 785 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
786 | mcr = priv->line_control; |
787 | status = priv->line_status; | |
372db8a7 | 788 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
789 | |
790 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
791 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
792 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
793 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
794 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
795 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
796 | ||
797 | dbg("%s - result = %x", __FUNCTION__, result); | |
798 | ||
799 | return result; | |
800 | } | |
801 | ||
802 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) | |
803 | { | |
804 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
805 | unsigned long flags; | |
806 | unsigned int prevstatus; | |
807 | unsigned int status; | |
808 | unsigned int changed; | |
809 | ||
372db8a7 | 810 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 811 | prevstatus = priv->line_status; |
372db8a7 | 812 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
813 | |
814 | while (1) { | |
815 | interruptible_sleep_on(&priv->delta_msr_wait); | |
816 | /* see if a signal did it */ | |
817 | if (signal_pending(current)) | |
818 | return -ERESTARTSYS; | |
372db8a7 TG |
819 | |
820 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 821 | status = priv->line_status; |
372db8a7 TG |
822 | spin_unlock_irqrestore(&priv->lock, flags); |
823 | ||
1da177e4 | 824 | changed=prevstatus^status; |
372db8a7 | 825 | |
1da177e4 LT |
826 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
827 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
828 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
829 | ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { | |
830 | return 0; | |
831 | } | |
832 | prevstatus = status; | |
833 | } | |
834 | /* NOTREACHED */ | |
835 | return 0; | |
836 | } | |
837 | ||
372db8a7 TG |
838 | static int pl2303_ioctl(struct usb_serial_port *port, struct file *file, |
839 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
840 | { |
841 | dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); | |
842 | ||
843 | switch (cmd) { | |
844 | case TIOCMIWAIT: | |
845 | dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); | |
846 | return wait_modem_info(port, arg); | |
847 | ||
848 | default: | |
849 | dbg("%s not supported = 0x%04x", __FUNCTION__, cmd); | |
850 | break; | |
851 | } | |
852 | ||
853 | return -ENOIOCTLCMD; | |
854 | } | |
855 | ||
372db8a7 | 856 | static void pl2303_break_ctl(struct usb_serial_port *port, int break_state) |
1da177e4 LT |
857 | { |
858 | struct usb_serial *serial = port->serial; | |
859 | u16 state; | |
860 | int result; | |
861 | ||
862 | dbg("%s - port %d", __FUNCTION__, port->number); | |
863 | ||
864 | if (break_state == 0) | |
865 | state = BREAK_OFF; | |
866 | else | |
867 | state = BREAK_ON; | |
868 | dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); | |
869 | ||
372db8a7 TG |
870 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
871 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
872 | 0, NULL, 0, 100); | |
1da177e4 LT |
873 | if (result) |
874 | dbg("%s - error sending break = %d", __FUNCTION__, result); | |
875 | } | |
876 | ||
372db8a7 | 877 | static void pl2303_shutdown(struct usb_serial *serial) |
1da177e4 LT |
878 | { |
879 | int i; | |
880 | struct pl2303_private *priv; | |
881 | ||
882 | dbg("%s", __FUNCTION__); | |
883 | ||
884 | for (i = 0; i < serial->num_ports; ++i) { | |
885 | priv = usb_get_serial_port_data(serial->port[i]); | |
886 | if (priv) { | |
887 | pl2303_buf_free(priv->buf); | |
888 | kfree(priv); | |
889 | usb_set_serial_port_data(serial->port[i], NULL); | |
890 | } | |
372db8a7 | 891 | } |
1da177e4 LT |
892 | } |
893 | ||
97bb13ec FL |
894 | static void pl2303_update_line_status(struct usb_serial_port *port, |
895 | unsigned char *data, | |
896 | unsigned int actual_length) | |
897 | { | |
898 | ||
899 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
900 | unsigned long flags; | |
901 | u8 status_idx = UART_STATE; | |
95f209f9 | 902 | u8 length = UART_STATE + 1; |
9c537616 | 903 | u16 idv, idp; |
97bb13ec | 904 | |
9c537616 TG |
905 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
906 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
907 | ||
908 | ||
909 | if (idv == SIEMENS_VENDOR_ID) { | |
910 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
911 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
912 | idp == SIEMENS_PRODUCT_ID_X75) { | |
913 | ||
914 | length = 1; | |
915 | status_idx = 0; | |
916 | } | |
97bb13ec FL |
917 | } |
918 | ||
919 | if (actual_length < length) | |
a009b75a | 920 | return; |
97bb13ec FL |
921 | |
922 | /* Save off the uart status for others to look at */ | |
923 | spin_lock_irqsave(&priv->lock, flags); | |
924 | priv->line_status = data[status_idx]; | |
925 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 926 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 927 | } |
1da177e4 | 928 | |
7d12e780 | 929 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 LT |
930 | { |
931 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1da177e4 | 932 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 933 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
934 | int status = urb->status; |
935 | int retval; | |
1da177e4 LT |
936 | |
937 | dbg("%s (%d)", __FUNCTION__, port->number); | |
938 | ||
461d696a | 939 | switch (status) { |
1da177e4 LT |
940 | case 0: |
941 | /* success */ | |
942 | break; | |
943 | case -ECONNRESET: | |
944 | case -ENOENT: | |
945 | case -ESHUTDOWN: | |
946 | /* this urb is terminated, clean up */ | |
372db8a7 | 947 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
461d696a | 948 | status); |
1da177e4 LT |
949 | return; |
950 | default: | |
372db8a7 | 951 | dbg("%s - nonzero urb status received: %d", __FUNCTION__, |
461d696a | 952 | status); |
1da177e4 LT |
953 | goto exit; |
954 | } | |
955 | ||
372db8a7 TG |
956 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
957 | urb->actual_length, urb->transfer_buffer); | |
958 | ||
97bb13ec | 959 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 960 | |
1da177e4 | 961 | exit: |
461d696a GKH |
962 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
963 | if (retval) | |
372db8a7 TG |
964 | dev_err(&urb->dev->dev, |
965 | "%s - usb_submit_urb failed with result %d\n", | |
461d696a | 966 | __FUNCTION__, retval); |
1da177e4 LT |
967 | } |
968 | ||
7d12e780 | 969 | static void pl2303_read_bulk_callback(struct urb *urb) |
1da177e4 LT |
970 | { |
971 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
972 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
973 | struct tty_struct *tty; | |
974 | unsigned char *data = urb->transfer_buffer; | |
975 | unsigned long flags; | |
976 | int i; | |
977 | int result; | |
461d696a GKH |
978 | int status = urb->status; |
979 | u8 line_status; | |
1da177e4 LT |
980 | char tty_flag; |
981 | ||
982 | dbg("%s - port %d", __FUNCTION__, port->number); | |
983 | ||
461d696a GKH |
984 | if (status) { |
985 | dbg("%s - urb status = %d", __FUNCTION__, status); | |
1da177e4 LT |
986 | if (!port->open_count) { |
987 | dbg("%s - port is closed, exiting.", __FUNCTION__); | |
988 | return; | |
989 | } | |
461d696a | 990 | if (status == -EPROTO) { |
372db8a7 TG |
991 | /* PL2303 mysteriously fails with -EPROTO reschedule |
992 | * the read */ | |
993 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
994 | __FUNCTION__); | |
1da177e4 LT |
995 | urb->dev = port->serial->dev; |
996 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
997 | if (result) | |
372db8a7 TG |
998 | dev_err(&urb->dev->dev, "%s - failed" |
999 | " resubmitting read urb, error %d\n", | |
1000 | __FUNCTION__, result); | |
1da177e4 LT |
1001 | return; |
1002 | } | |
1003 | dbg("%s - unable to handle the error, exiting.", __FUNCTION__); | |
1004 | return; | |
1005 | } | |
1006 | ||
372db8a7 TG |
1007 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, |
1008 | urb->actual_length, data); | |
1da177e4 LT |
1009 | |
1010 | /* get tty_flag from status */ | |
1011 | tty_flag = TTY_NORMAL; | |
1012 | ||
1013 | spin_lock_irqsave(&priv->lock, flags); | |
461d696a | 1014 | line_status = priv->line_status; |
1da177e4 LT |
1015 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
1016 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1017 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 LT |
1018 | |
1019 | /* break takes precedence over parity, */ | |
1020 | /* which takes precedence over framing errors */ | |
461d696a | 1021 | if (line_status & UART_BREAK_ERROR ) |
1da177e4 | 1022 | tty_flag = TTY_BREAK; |
461d696a | 1023 | else if (line_status & UART_PARITY_ERROR) |
1da177e4 | 1024 | tty_flag = TTY_PARITY; |
461d696a | 1025 | else if (line_status & UART_FRAME_ERROR) |
1da177e4 LT |
1026 | tty_flag = TTY_FRAME; |
1027 | dbg("%s - tty_flag = %d", __FUNCTION__, tty_flag); | |
1028 | ||
1029 | tty = port->tty; | |
1030 | if (tty && urb->actual_length) { | |
33f0f88f | 1031 | tty_buffer_request_room(tty, urb->actual_length + 1); |
1da177e4 | 1032 | /* overrun is special, not associated with a char */ |
461d696a | 1033 | if (line_status & UART_OVERRUN_ERROR) |
1da177e4 | 1034 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
33f0f88f | 1035 | for (i = 0; i < urb->actual_length; ++i) |
372db8a7 TG |
1036 | tty_insert_flip_char(tty, data[i], tty_flag); |
1037 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1038 | } |
1039 | ||
1040 | /* Schedule the next read _if_ we are still open */ | |
1041 | if (port->open_count) { | |
1042 | urb->dev = port->serial->dev; | |
1043 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1044 | if (result) | |
372db8a7 TG |
1045 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
1046 | " read urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | return; | |
1050 | } | |
1051 | ||
7d12e780 | 1052 | static void pl2303_write_bulk_callback(struct urb *urb) |
1da177e4 LT |
1053 | { |
1054 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1055 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1056 | int result; | |
461d696a | 1057 | int status = urb->status; |
1da177e4 LT |
1058 | |
1059 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1060 | ||
461d696a | 1061 | switch (status) { |
1da177e4 LT |
1062 | case 0: |
1063 | /* success */ | |
1064 | break; | |
1065 | case -ECONNRESET: | |
1066 | case -ENOENT: | |
1067 | case -ESHUTDOWN: | |
1068 | /* this urb is terminated, clean up */ | |
372db8a7 | 1069 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, |
461d696a | 1070 | status); |
1da177e4 LT |
1071 | priv->write_urb_in_use = 0; |
1072 | return; | |
1073 | default: | |
1074 | /* error in the urb, so we have to resubmit it */ | |
1075 | dbg("%s - Overflow in write", __FUNCTION__); | |
372db8a7 | 1076 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, |
461d696a | 1077 | status); |
1da177e4 LT |
1078 | port->write_urb->transfer_buffer_length = 1; |
1079 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 1080 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1081 | if (result) |
372db8a7 TG |
1082 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
1083 | " urb, error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1084 | else |
1085 | return; | |
1086 | } | |
1087 | ||
1088 | priv->write_urb_in_use = 0; | |
1089 | ||
1090 | /* send any buffered data */ | |
1091 | pl2303_send(port); | |
1092 | } | |
1093 | ||
572d3138 TG |
1094 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1095 | static struct usb_serial_driver pl2303_device = { | |
1096 | .driver = { | |
1097 | .owner = THIS_MODULE, | |
1098 | .name = "pl2303", | |
1099 | }, | |
1100 | .id_table = id_table, | |
d9b1b787 | 1101 | .usb_driver = &pl2303_driver, |
572d3138 TG |
1102 | .num_interrupt_in = NUM_DONT_CARE, |
1103 | .num_bulk_in = 1, | |
1104 | .num_bulk_out = 1, | |
1105 | .num_ports = 1, | |
1106 | .open = pl2303_open, | |
1107 | .close = pl2303_close, | |
1108 | .write = pl2303_write, | |
1109 | .ioctl = pl2303_ioctl, | |
1110 | .break_ctl = pl2303_break_ctl, | |
1111 | .set_termios = pl2303_set_termios, | |
1112 | .tiocmget = pl2303_tiocmget, | |
1113 | .tiocmset = pl2303_tiocmset, | |
1114 | .read_bulk_callback = pl2303_read_bulk_callback, | |
1115 | .read_int_callback = pl2303_read_int_callback, | |
1116 | .write_bulk_callback = pl2303_write_bulk_callback, | |
1117 | .write_room = pl2303_write_room, | |
1118 | .chars_in_buffer = pl2303_chars_in_buffer, | |
1119 | .attach = pl2303_startup, | |
1120 | .shutdown = pl2303_shutdown, | |
1121 | }; | |
1da177e4 | 1122 | |
372db8a7 | 1123 | static int __init pl2303_init(void) |
1da177e4 LT |
1124 | { |
1125 | int retval; | |
372db8a7 | 1126 | |
1da177e4 LT |
1127 | retval = usb_serial_register(&pl2303_device); |
1128 | if (retval) | |
1129 | goto failed_usb_serial_register; | |
1130 | retval = usb_register(&pl2303_driver); | |
1131 | if (retval) | |
1132 | goto failed_usb_register; | |
17a882fc | 1133 | info(DRIVER_DESC); |
1da177e4 LT |
1134 | return 0; |
1135 | failed_usb_register: | |
1136 | usb_serial_deregister(&pl2303_device); | |
1137 | failed_usb_serial_register: | |
1138 | return retval; | |
1139 | } | |
1140 | ||
372db8a7 | 1141 | static void __exit pl2303_exit(void) |
1da177e4 | 1142 | { |
372db8a7 TG |
1143 | usb_deregister(&pl2303_driver); |
1144 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
1145 | } |
1146 | ||
1da177e4 LT |
1147 | module_init(pl2303_init); |
1148 | module_exit(pl2303_exit); | |
1149 | ||
1150 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1151 | MODULE_LICENSE("GPL"); |
1152 | ||
1153 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1154 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1155 |