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) }, | |
b483b6aa | 58 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
1da177e4 | 59 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 60 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
61 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
62 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
63 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
64 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
65 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 66 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
67 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
68 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
57833ea6 | 69 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) }, |
1da177e4 LT |
70 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, |
71 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
72 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
73 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
74 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
75 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 76 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 77 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 78 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 79 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
acbb36f1 | 80 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
81 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
82 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 83 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 84 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 85 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 86 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 87 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 88 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 89 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 90 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
002e8f2c | 91 | { USB_DEVICE(HL340_VENDOR_ID, HL340_PRODUCT_ID) }, |
cc311ee7 | 92 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
1da177e4 LT |
93 | { } /* Terminating entry */ |
94 | }; | |
95 | ||
372db8a7 | 96 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
97 | |
98 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
99 | .name = "pl2303", |
100 | .probe = usb_serial_probe, | |
101 | .disconnect = usb_serial_disconnect, | |
102 | .id_table = id_table, | |
fcf9e55e SS |
103 | .suspend = usb_serial_suspend, |
104 | .resume = usb_serial_resume, | |
ba9dc657 | 105 | .no_dynamic_id = 1, |
fcf9e55e | 106 | .supports_autosuspend = 1, |
1da177e4 LT |
107 | }; |
108 | ||
109 | #define SET_LINE_REQUEST_TYPE 0x21 | |
110 | #define SET_LINE_REQUEST 0x20 | |
111 | ||
112 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
113 | #define SET_CONTROL_REQUEST 0x22 | |
114 | #define CONTROL_DTR 0x01 | |
115 | #define CONTROL_RTS 0x02 | |
116 | ||
117 | #define BREAK_REQUEST_TYPE 0x21 | |
118 | #define BREAK_REQUEST 0x23 | |
119 | #define BREAK_ON 0xffff | |
120 | #define BREAK_OFF 0x0000 | |
121 | ||
122 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
123 | #define GET_LINE_REQUEST 0x21 | |
124 | ||
125 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
126 | #define VENDOR_WRITE_REQUEST 0x01 | |
127 | ||
128 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
129 | #define VENDOR_READ_REQUEST 0x01 | |
130 | ||
131 | #define UART_STATE 0x08 | |
132 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
133 | #define UART_DCD 0x01 | |
134 | #define UART_DSR 0x02 | |
135 | #define UART_BREAK_ERROR 0x04 | |
136 | #define UART_RING 0x08 | |
137 | #define UART_FRAME_ERROR 0x10 | |
138 | #define UART_PARITY_ERROR 0x20 | |
139 | #define UART_OVERRUN_ERROR 0x40 | |
140 | #define UART_CTS 0x80 | |
141 | ||
1da177e4 LT |
142 | |
143 | enum pl2303_type { | |
144 | type_0, /* don't know the difference between type 0 and */ | |
145 | type_1, /* type 1, until someone from prolific tells us... */ | |
146 | HX, /* HX version of the pl2303 chip */ | |
147 | }; | |
148 | ||
149 | struct pl2303_private { | |
150 | spinlock_t lock; | |
151 | struct pl2303_buf *buf; | |
152 | int write_urb_in_use; | |
153 | wait_queue_head_t delta_msr_wait; | |
154 | u8 line_control; | |
155 | u8 line_status; | |
156 | u8 termios_initialized; | |
157 | enum pl2303_type type; | |
158 | }; | |
159 | ||
572d3138 TG |
160 | /* |
161 | * pl2303_buf_alloc | |
162 | * | |
163 | * Allocate a circular buffer and all associated memory. | |
164 | */ | |
165 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) | |
166 | { | |
167 | struct pl2303_buf *pb; | |
168 | ||
169 | if (size == 0) | |
170 | return NULL; | |
171 | ||
5cbded58 | 172 | pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); |
572d3138 TG |
173 | if (pb == NULL) |
174 | return NULL; | |
175 | ||
176 | pb->buf_buf = kmalloc(size, GFP_KERNEL); | |
177 | if (pb->buf_buf == NULL) { | |
178 | kfree(pb); | |
179 | return NULL; | |
180 | } | |
181 | ||
182 | pb->buf_size = size; | |
183 | pb->buf_get = pb->buf_put = pb->buf_buf; | |
184 | ||
185 | return pb; | |
186 | } | |
187 | ||
188 | /* | |
189 | * pl2303_buf_free | |
190 | * | |
191 | * Free the buffer and all associated memory. | |
192 | */ | |
193 | static void pl2303_buf_free(struct pl2303_buf *pb) | |
194 | { | |
195 | if (pb) { | |
196 | kfree(pb->buf_buf); | |
197 | kfree(pb); | |
198 | } | |
199 | } | |
200 | ||
201 | /* | |
202 | * pl2303_buf_clear | |
203 | * | |
204 | * Clear out all data in the circular buffer. | |
205 | */ | |
206 | static void pl2303_buf_clear(struct pl2303_buf *pb) | |
207 | { | |
208 | if (pb != NULL) | |
209 | pb->buf_get = pb->buf_put; | |
210 | /* equivalent to a get of all data available */ | |
211 | } | |
212 | ||
213 | /* | |
214 | * pl2303_buf_data_avail | |
215 | * | |
216 | * Return the number of bytes of data available in the circular | |
217 | * buffer. | |
218 | */ | |
219 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) | |
220 | { | |
221 | if (pb == NULL) | |
222 | return 0; | |
223 | ||
224 | return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); | |
225 | } | |
226 | ||
227 | /* | |
228 | * pl2303_buf_space_avail | |
229 | * | |
230 | * Return the number of bytes of space available in the circular | |
231 | * buffer. | |
232 | */ | |
233 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) | |
234 | { | |
235 | if (pb == NULL) | |
236 | return 0; | |
237 | ||
238 | return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); | |
239 | } | |
240 | ||
241 | /* | |
242 | * pl2303_buf_put | |
243 | * | |
244 | * Copy data data from a user buffer and put it into the circular buffer. | |
245 | * Restrict to the amount of space available. | |
246 | * | |
247 | * Return the number of bytes copied. | |
248 | */ | |
249 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, | |
250 | unsigned int count) | |
251 | { | |
252 | unsigned int len; | |
253 | ||
254 | if (pb == NULL) | |
255 | return 0; | |
256 | ||
257 | len = pl2303_buf_space_avail(pb); | |
258 | if (count > len) | |
259 | count = len; | |
260 | ||
261 | if (count == 0) | |
262 | return 0; | |
263 | ||
264 | len = pb->buf_buf + pb->buf_size - pb->buf_put; | |
265 | if (count > len) { | |
266 | memcpy(pb->buf_put, buf, len); | |
267 | memcpy(pb->buf_buf, buf+len, count - len); | |
268 | pb->buf_put = pb->buf_buf + count - len; | |
269 | } else { | |
270 | memcpy(pb->buf_put, buf, count); | |
271 | if (count < len) | |
272 | pb->buf_put += count; | |
273 | else /* count == len */ | |
274 | pb->buf_put = pb->buf_buf; | |
275 | } | |
276 | ||
277 | return count; | |
278 | } | |
279 | ||
280 | /* | |
281 | * pl2303_buf_get | |
282 | * | |
283 | * Get data from the circular buffer and copy to the given buffer. | |
284 | * Restrict to the amount of data available. | |
285 | * | |
286 | * Return the number of bytes copied. | |
287 | */ | |
288 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, | |
289 | unsigned int count) | |
290 | { | |
291 | unsigned int len; | |
292 | ||
293 | if (pb == NULL) | |
294 | return 0; | |
295 | ||
296 | len = pl2303_buf_data_avail(pb); | |
297 | if (count > len) | |
298 | count = len; | |
299 | ||
300 | if (count == 0) | |
301 | return 0; | |
302 | ||
303 | len = pb->buf_buf + pb->buf_size - pb->buf_get; | |
304 | if (count > len) { | |
305 | memcpy(buf, pb->buf_get, len); | |
306 | memcpy(buf+len, pb->buf_buf, count - len); | |
307 | pb->buf_get = pb->buf_buf + count - len; | |
308 | } else { | |
309 | memcpy(buf, pb->buf_get, count); | |
310 | if (count < len) | |
311 | pb->buf_get += count; | |
312 | else /* count == len */ | |
313 | pb->buf_get = pb->buf_buf; | |
314 | } | |
315 | ||
316 | return count; | |
317 | } | |
1da177e4 | 318 | |
eb44da0b SS |
319 | static int pl2303_vendor_read(__u16 value, __u16 index, |
320 | struct usb_serial *serial, unsigned char *buf) | |
321 | { | |
322 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
323 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
324 | value, index, buf, 1, 100); | |
325 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, | |
326 | VENDOR_READ_REQUEST, value, index, res, buf[0]); | |
327 | return res; | |
328 | } | |
329 | ||
330 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
331 | struct usb_serial *serial) | |
332 | { | |
333 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
334 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
335 | value, index, NULL, 0, 100); | |
336 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, | |
337 | VENDOR_WRITE_REQUEST, value, index, res); | |
338 | return res; | |
339 | } | |
340 | ||
372db8a7 | 341 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
342 | { |
343 | struct pl2303_private *priv; | |
344 | enum pl2303_type type = type_0; | |
3e152505 | 345 | unsigned char *buf; |
1da177e4 LT |
346 | int i; |
347 | ||
3e152505 SS |
348 | buf = kmalloc(10, GFP_KERNEL); |
349 | if (buf == NULL) | |
350 | return -ENOMEM; | |
351 | ||
1da177e4 LT |
352 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
353 | type = type_0; | |
354 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
355 | type = HX; | |
356 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
357 | type = type_1; | |
358 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
359 | type = type_1; | |
360 | dbg("device type: %d", type); | |
361 | ||
362 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 363 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
364 | if (!priv) |
365 | goto cleanup; | |
1da177e4 LT |
366 | spin_lock_init(&priv->lock); |
367 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
368 | if (priv->buf == NULL) { | |
369 | kfree(priv); | |
370 | goto cleanup; | |
371 | } | |
372 | init_waitqueue_head(&priv->delta_msr_wait); | |
373 | priv->type = type; | |
374 | usb_set_serial_port_data(serial->port[i], priv); | |
375 | } | |
3e152505 SS |
376 | |
377 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
378 | pl2303_vendor_write(0x0404, 0, serial); | |
379 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
380 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
381 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
382 | pl2303_vendor_write(0x0404, 1, serial); | |
383 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
384 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
385 | pl2303_vendor_write(0, 1, serial); | |
386 | pl2303_vendor_write(1, 0, serial); | |
387 | if (type == HX) | |
388 | pl2303_vendor_write(2, 0x44, serial); | |
389 | else | |
390 | pl2303_vendor_write(2, 0x24, serial); | |
391 | ||
392 | kfree(buf); | |
1da177e4 LT |
393 | return 0; |
394 | ||
395 | cleanup: | |
3e152505 | 396 | kfree(buf); |
1da177e4 LT |
397 | for (--i; i>=0; --i) { |
398 | priv = usb_get_serial_port_data(serial->port[i]); | |
399 | pl2303_buf_free(priv->buf); | |
400 | kfree(priv); | |
401 | usb_set_serial_port_data(serial->port[i], NULL); | |
402 | } | |
403 | return -ENOMEM; | |
404 | } | |
405 | ||
372db8a7 | 406 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
407 | { |
408 | int retval; | |
409 | ||
372db8a7 TG |
410 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
411 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
412 | value, 0, NULL, 0, 100); | |
441b62c1 | 413 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
1da177e4 LT |
414 | return retval; |
415 | } | |
416 | ||
1da177e4 LT |
417 | static void pl2303_send(struct usb_serial_port *port) |
418 | { | |
419 | int count, result; | |
420 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
421 | unsigned long flags; | |
422 | ||
441b62c1 | 423 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
424 | |
425 | spin_lock_irqsave(&priv->lock, flags); | |
426 | ||
427 | if (priv->write_urb_in_use) { | |
428 | spin_unlock_irqrestore(&priv->lock, flags); | |
429 | return; | |
430 | } | |
431 | ||
432 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 433 | port->bulk_out_size); |
1da177e4 LT |
434 | |
435 | if (count == 0) { | |
436 | spin_unlock_irqrestore(&priv->lock, flags); | |
437 | return; | |
438 | } | |
439 | ||
440 | priv->write_urb_in_use = 1; | |
441 | ||
442 | spin_unlock_irqrestore(&priv->lock, flags); | |
443 | ||
441b62c1 | 444 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
372db8a7 | 445 | port->write_urb->transfer_buffer); |
1da177e4 LT |
446 | |
447 | port->write_urb->transfer_buffer_length = count; | |
448 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 449 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 450 | if (result) { |
372db8a7 | 451 | dev_err(&port->dev, "%s - failed submitting write urb," |
441b62c1 | 452 | " error %d\n", __func__, result); |
1da177e4 LT |
453 | priv->write_urb_in_use = 0; |
454 | // TODO: reschedule pl2303_send | |
455 | } | |
456 | ||
cf2c7481 | 457 | usb_serial_port_softint(port); |
1da177e4 LT |
458 | } |
459 | ||
572d3138 TG |
460 | static int pl2303_write(struct usb_serial_port *port, const unsigned char *buf, |
461 | int count) | |
462 | { | |
463 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
464 | unsigned long flags; | |
465 | ||
441b62c1 | 466 | dbg("%s - port %d, %d bytes", __func__, port->number, count); |
572d3138 TG |
467 | |
468 | if (!count) | |
469 | return count; | |
470 | ||
471 | spin_lock_irqsave(&priv->lock, flags); | |
472 | count = pl2303_buf_put(priv->buf, buf, count); | |
473 | spin_unlock_irqrestore(&priv->lock, flags); | |
474 | ||
475 | pl2303_send(port); | |
476 | ||
477 | return count; | |
478 | } | |
479 | ||
1da177e4 LT |
480 | static int pl2303_write_room(struct usb_serial_port *port) |
481 | { | |
482 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
483 | int room = 0; | |
484 | unsigned long flags; | |
485 | ||
441b62c1 | 486 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
487 | |
488 | spin_lock_irqsave(&priv->lock, flags); | |
489 | room = pl2303_buf_space_avail(priv->buf); | |
490 | spin_unlock_irqrestore(&priv->lock, flags); | |
491 | ||
441b62c1 | 492 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
493 | return room; |
494 | } | |
495 | ||
496 | static int pl2303_chars_in_buffer(struct usb_serial_port *port) | |
497 | { | |
498 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
499 | int chars = 0; | |
500 | unsigned long flags; | |
501 | ||
441b62c1 | 502 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
503 | |
504 | spin_lock_irqsave(&priv->lock, flags); | |
505 | chars = pl2303_buf_data_avail(priv->buf); | |
506 | spin_unlock_irqrestore(&priv->lock, flags); | |
507 | ||
441b62c1 | 508 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
509 | return chars; |
510 | } | |
511 | ||
372db8a7 | 512 | static void pl2303_set_termios(struct usb_serial_port *port, |
606d099c | 513 | struct ktermios *old_termios) |
1da177e4 LT |
514 | { |
515 | struct usb_serial *serial = port->serial; | |
516 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
517 | unsigned long flags; | |
518 | unsigned int cflag; | |
519 | unsigned char *buf; | |
520 | int baud; | |
521 | int i; | |
522 | u8 control; | |
523 | ||
441b62c1 | 524 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 525 | |
1da177e4 LT |
526 | spin_lock_irqsave(&priv->lock, flags); |
527 | if (!priv->termios_initialized) { | |
528 | *(port->tty->termios) = tty_std_termios; | |
372db8a7 TG |
529 | port->tty->termios->c_cflag = B9600 | CS8 | CREAD | |
530 | HUPCL | CLOCAL; | |
df64c471 AC |
531 | port->tty->termios->c_ispeed = 9600; |
532 | port->tty->termios->c_ospeed = 9600; | |
1da177e4 LT |
533 | priv->termios_initialized = 1; |
534 | } | |
535 | spin_unlock_irqrestore(&priv->lock, flags); | |
536 | ||
bf5e5834 AC |
537 | /* The PL2303 is reported to lose bytes if you change |
538 | serial settings even to the same values as before. Thus | |
539 | we actually need to filter in this specific case */ | |
540 | ||
541 | if (!tty_termios_hw_change(port->tty->termios, old_termios)) | |
542 | return; | |
543 | ||
1da177e4 | 544 | cflag = port->tty->termios->c_cflag; |
1da177e4 | 545 | |
372db8a7 | 546 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 547 | if (!buf) { |
441b62c1 | 548 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
1da177e4 LT |
549 | return; |
550 | } | |
1da177e4 | 551 | |
372db8a7 TG |
552 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
553 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
554 | 0, 0, buf, 7, 100); | |
555 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
556 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
557 | |
558 | if (cflag & CSIZE) { | |
559 | switch (cflag & CSIZE) { | |
560 | case CS5: buf[6] = 5; break; | |
561 | case CS6: buf[6] = 6; break; | |
562 | case CS7: buf[6] = 7; break; | |
563 | default: | |
564 | case CS8: buf[6] = 8; break; | |
565 | } | |
441b62c1 | 566 | dbg("%s - data bits = %d", __func__, buf[6]); |
1da177e4 LT |
567 | } |
568 | ||
e0c79f51 | 569 | baud = tty_get_baud_rate(port->tty);; |
441b62c1 | 570 | dbg("%s - baud = %d", __func__, baud); |
1da177e4 LT |
571 | if (baud) { |
572 | buf[0] = baud & 0xff; | |
573 | buf[1] = (baud >> 8) & 0xff; | |
574 | buf[2] = (baud >> 16) & 0xff; | |
575 | buf[3] = (baud >> 24) & 0xff; | |
576 | } | |
577 | ||
578 | /* For reference buf[4]=0 is 1 stop bits */ | |
579 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
580 | /* For reference buf[4]=2 is 2 stop bits */ | |
581 | if (cflag & CSTOPB) { | |
582 | buf[4] = 2; | |
441b62c1 | 583 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
584 | } else { |
585 | buf[4] = 0; | |
441b62c1 | 586 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
587 | } |
588 | ||
589 | if (cflag & PARENB) { | |
590 | /* For reference buf[5]=0 is none parity */ | |
591 | /* For reference buf[5]=1 is odd parity */ | |
592 | /* For reference buf[5]=2 is even parity */ | |
593 | /* For reference buf[5]=3 is mark parity */ | |
594 | /* For reference buf[5]=4 is space parity */ | |
595 | if (cflag & PARODD) { | |
596 | buf[5] = 1; | |
441b62c1 | 597 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
598 | } else { |
599 | buf[5] = 2; | |
441b62c1 | 600 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
601 | } |
602 | } else { | |
603 | buf[5] = 0; | |
441b62c1 | 604 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
605 | } |
606 | ||
372db8a7 TG |
607 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
608 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
609 | 0, 0, buf, 7, 100); | |
610 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
611 | |
612 | /* change control lines if we are switching to or from B0 */ | |
613 | spin_lock_irqsave(&priv->lock, flags); | |
614 | control = priv->line_control; | |
615 | if ((cflag & CBAUD) == B0) | |
616 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
617 | else | |
618 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
619 | if (control != priv->line_control) { | |
620 | control = priv->line_control; | |
621 | spin_unlock_irqrestore(&priv->lock, flags); | |
622 | set_control_lines(serial->dev, control); | |
623 | } else { | |
624 | spin_unlock_irqrestore(&priv->lock, flags); | |
625 | } | |
372db8a7 | 626 | |
1da177e4 LT |
627 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
628 | ||
372db8a7 TG |
629 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
630 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
631 | 0, 0, buf, 7, 100); | |
632 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
633 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
634 | ||
635 | if (cflag & CRTSCTS) { | |
1da177e4 | 636 | if (priv->type == HX) |
eb44da0b | 637 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 638 | else |
eb44da0b | 639 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 640 | } else { |
eb44da0b | 641 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 642 | } |
572d3138 | 643 | |
df64c471 AC |
644 | /* FIXME: Need to read back resulting baud rate */ |
645 | if (baud) | |
646 | tty_encode_baud_rate(port->tty, baud, baud); | |
647 | ||
572d3138 TG |
648 | kfree(buf); |
649 | } | |
650 | ||
651 | static void pl2303_close(struct usb_serial_port *port, struct file *filp) | |
652 | { | |
653 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
654 | unsigned long flags; | |
655 | unsigned int c_cflag; | |
656 | int bps; | |
657 | long timeout; | |
658 | wait_queue_t wait; | |
659 | ||
441b62c1 | 660 | dbg("%s - port %d", __func__, port->number); |
572d3138 TG |
661 | |
662 | /* wait for data to drain from the buffer */ | |
663 | spin_lock_irqsave(&priv->lock, flags); | |
664 | timeout = PL2303_CLOSING_WAIT; | |
665 | init_waitqueue_entry(&wait, current); | |
666 | add_wait_queue(&port->tty->write_wait, &wait); | |
667 | for (;;) { | |
668 | set_current_state(TASK_INTERRUPTIBLE); | |
669 | if (pl2303_buf_data_avail(priv->buf) == 0 || | |
670 | timeout == 0 || signal_pending(current) || | |
0915f490 | 671 | port->serial->disconnected) |
572d3138 TG |
672 | break; |
673 | spin_unlock_irqrestore(&priv->lock, flags); | |
674 | timeout = schedule_timeout(timeout); | |
675 | spin_lock_irqsave(&priv->lock, flags); | |
676 | } | |
677 | set_current_state(TASK_RUNNING); | |
678 | remove_wait_queue(&port->tty->write_wait, &wait); | |
679 | /* clear out any remaining data in the buffer */ | |
680 | pl2303_buf_clear(priv->buf); | |
681 | spin_unlock_irqrestore(&priv->lock, flags); | |
682 | ||
683 | /* wait for characters to drain from the device */ | |
684 | /* (this is long enough for the entire 256 byte */ | |
685 | /* pl2303 hardware buffer to drain with no flow */ | |
686 | /* control for data rates of 1200 bps or more, */ | |
687 | /* for lower rates we should really know how much */ | |
688 | /* data is in the buffer to compute a delay */ | |
689 | /* that is not unnecessarily long) */ | |
690 | bps = tty_get_baud_rate(port->tty); | |
691 | if (bps > 1200) | |
692 | timeout = max((HZ*2560)/bps,HZ/10); | |
693 | else | |
694 | timeout = 2*HZ; | |
695 | schedule_timeout_interruptible(timeout); | |
696 | ||
697 | /* shutdown our urbs */ | |
441b62c1 | 698 | dbg("%s - shutting down urbs", __func__); |
572d3138 TG |
699 | usb_kill_urb(port->write_urb); |
700 | usb_kill_urb(port->read_urb); | |
701 | usb_kill_urb(port->interrupt_in_urb); | |
702 | ||
703 | if (port->tty) { | |
704 | c_cflag = port->tty->termios->c_cflag; | |
705 | if (c_cflag & HUPCL) { | |
706 | /* drop DTR and RTS */ | |
707 | spin_lock_irqsave(&priv->lock, flags); | |
708 | priv->line_control = 0; | |
709 | spin_unlock_irqrestore(&priv->lock, flags); | |
710 | set_control_lines(port->serial->dev, 0); | |
711 | } | |
712 | } | |
1da177e4 LT |
713 | } |
714 | ||
372db8a7 | 715 | static int pl2303_open(struct usb_serial_port *port, struct file *filp) |
1da177e4 | 716 | { |
606d099c | 717 | struct ktermios tmp_termios; |
1da177e4 LT |
718 | struct usb_serial *serial = port->serial; |
719 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1da177e4 LT |
720 | int result; |
721 | ||
441b62c1 | 722 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 723 | |
1694899f D |
724 | if (priv->type != HX) { |
725 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
726 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 727 | } else { |
1da177e4 | 728 | /* reset upstream data pipes */ |
eb44da0b SS |
729 | pl2303_vendor_write(8, 0, serial); |
730 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
731 | } |
732 | ||
1da177e4 LT |
733 | /* Setup termios */ |
734 | if (port->tty) { | |
372db8a7 | 735 | pl2303_set_termios(port, &tmp_termios); |
1da177e4 LT |
736 | } |
737 | ||
738 | //FIXME: need to assert RTS and DTR if CRTSCTS off | |
739 | ||
441b62c1 | 740 | dbg("%s - submitting read urb", __func__); |
1da177e4 | 741 | port->read_urb->dev = serial->dev; |
372db8a7 | 742 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 743 | if (result) { |
372db8a7 | 744 | dev_err(&port->dev, "%s - failed submitting read urb," |
441b62c1 | 745 | " error %d\n", __func__, result); |
372db8a7 | 746 | pl2303_close(port, NULL); |
1da177e4 LT |
747 | return -EPROTO; |
748 | } | |
749 | ||
441b62c1 | 750 | dbg("%s - submitting interrupt urb", __func__); |
1da177e4 | 751 | port->interrupt_in_urb->dev = serial->dev; |
372db8a7 | 752 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 753 | if (result) { |
372db8a7 | 754 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 755 | " error %d\n", __func__, result); |
372db8a7 | 756 | pl2303_close(port, NULL); |
1da177e4 LT |
757 | return -EPROTO; |
758 | } | |
759 | return 0; | |
760 | } | |
761 | ||
372db8a7 TG |
762 | static int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, |
763 | unsigned int set, unsigned int clear) | |
1da177e4 LT |
764 | { |
765 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
766 | unsigned long flags; | |
767 | u8 control; | |
768 | ||
6fdd8e8e FL |
769 | if (!usb_get_intfdata(port->serial->interface)) |
770 | return -ENODEV; | |
771 | ||
372db8a7 | 772 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
773 | if (set & TIOCM_RTS) |
774 | priv->line_control |= CONTROL_RTS; | |
775 | if (set & TIOCM_DTR) | |
776 | priv->line_control |= CONTROL_DTR; | |
777 | if (clear & TIOCM_RTS) | |
778 | priv->line_control &= ~CONTROL_RTS; | |
779 | if (clear & TIOCM_DTR) | |
780 | priv->line_control &= ~CONTROL_DTR; | |
781 | control = priv->line_control; | |
372db8a7 | 782 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 783 | |
372db8a7 | 784 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
785 | } |
786 | ||
372db8a7 | 787 | static int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) |
1da177e4 LT |
788 | { |
789 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
790 | unsigned long flags; | |
791 | unsigned int mcr; | |
792 | unsigned int status; | |
793 | unsigned int result; | |
794 | ||
441b62c1 | 795 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 796 | |
6fdd8e8e FL |
797 | if (!usb_get_intfdata(port->serial->interface)) |
798 | return -ENODEV; | |
799 | ||
372db8a7 | 800 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
801 | mcr = priv->line_control; |
802 | status = priv->line_status; | |
372db8a7 | 803 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
804 | |
805 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
806 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
807 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
808 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
809 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
810 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
811 | ||
441b62c1 | 812 | dbg("%s - result = %x", __func__, result); |
1da177e4 LT |
813 | |
814 | return result; | |
815 | } | |
816 | ||
817 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) | |
818 | { | |
819 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
820 | unsigned long flags; | |
821 | unsigned int prevstatus; | |
822 | unsigned int status; | |
823 | unsigned int changed; | |
824 | ||
372db8a7 | 825 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 826 | prevstatus = priv->line_status; |
372db8a7 | 827 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
828 | |
829 | while (1) { | |
830 | interruptible_sleep_on(&priv->delta_msr_wait); | |
831 | /* see if a signal did it */ | |
832 | if (signal_pending(current)) | |
833 | return -ERESTARTSYS; | |
372db8a7 TG |
834 | |
835 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 836 | status = priv->line_status; |
372db8a7 TG |
837 | spin_unlock_irqrestore(&priv->lock, flags); |
838 | ||
1da177e4 | 839 | changed=prevstatus^status; |
372db8a7 | 840 | |
1da177e4 LT |
841 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
842 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
843 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
844 | ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { | |
845 | return 0; | |
846 | } | |
847 | prevstatus = status; | |
848 | } | |
849 | /* NOTREACHED */ | |
850 | return 0; | |
851 | } | |
852 | ||
372db8a7 TG |
853 | static int pl2303_ioctl(struct usb_serial_port *port, struct file *file, |
854 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 855 | { |
441b62c1 | 856 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
1da177e4 LT |
857 | |
858 | switch (cmd) { | |
859 | case TIOCMIWAIT: | |
441b62c1 | 860 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
1da177e4 LT |
861 | return wait_modem_info(port, arg); |
862 | ||
863 | default: | |
441b62c1 | 864 | dbg("%s not supported = 0x%04x", __func__, cmd); |
1da177e4 LT |
865 | break; |
866 | } | |
867 | ||
868 | return -ENOIOCTLCMD; | |
869 | } | |
870 | ||
372db8a7 | 871 | static void pl2303_break_ctl(struct usb_serial_port *port, int break_state) |
1da177e4 LT |
872 | { |
873 | struct usb_serial *serial = port->serial; | |
874 | u16 state; | |
875 | int result; | |
876 | ||
441b62c1 | 877 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
878 | |
879 | if (break_state == 0) | |
880 | state = BREAK_OFF; | |
881 | else | |
882 | state = BREAK_ON; | |
441b62c1 | 883 | dbg("%s - turning break %s", __func__, state==BREAK_OFF ? "off" : "on"); |
1da177e4 | 884 | |
372db8a7 TG |
885 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
886 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
887 | 0, NULL, 0, 100); | |
1da177e4 | 888 | if (result) |
441b62c1 | 889 | dbg("%s - error sending break = %d", __func__, result); |
1da177e4 LT |
890 | } |
891 | ||
372db8a7 | 892 | static void pl2303_shutdown(struct usb_serial *serial) |
1da177e4 LT |
893 | { |
894 | int i; | |
895 | struct pl2303_private *priv; | |
896 | ||
441b62c1 | 897 | dbg("%s", __func__); |
1da177e4 LT |
898 | |
899 | for (i = 0; i < serial->num_ports; ++i) { | |
900 | priv = usb_get_serial_port_data(serial->port[i]); | |
901 | if (priv) { | |
902 | pl2303_buf_free(priv->buf); | |
903 | kfree(priv); | |
904 | usb_set_serial_port_data(serial->port[i], NULL); | |
905 | } | |
372db8a7 | 906 | } |
1da177e4 LT |
907 | } |
908 | ||
97bb13ec FL |
909 | static void pl2303_update_line_status(struct usb_serial_port *port, |
910 | unsigned char *data, | |
911 | unsigned int actual_length) | |
912 | { | |
913 | ||
914 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
915 | unsigned long flags; | |
916 | u8 status_idx = UART_STATE; | |
95f209f9 | 917 | u8 length = UART_STATE + 1; |
9c537616 | 918 | u16 idv, idp; |
97bb13ec | 919 | |
9c537616 TG |
920 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
921 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
922 | ||
923 | ||
924 | if (idv == SIEMENS_VENDOR_ID) { | |
925 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
926 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
927 | idp == SIEMENS_PRODUCT_ID_X75) { | |
928 | ||
929 | length = 1; | |
930 | status_idx = 0; | |
931 | } | |
97bb13ec FL |
932 | } |
933 | ||
934 | if (actual_length < length) | |
a009b75a | 935 | return; |
97bb13ec FL |
936 | |
937 | /* Save off the uart status for others to look at */ | |
938 | spin_lock_irqsave(&priv->lock, flags); | |
939 | priv->line_status = data[status_idx]; | |
940 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 941 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 942 | } |
1da177e4 | 943 | |
7d12e780 | 944 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 LT |
945 | { |
946 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1da177e4 | 947 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 948 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
949 | int status = urb->status; |
950 | int retval; | |
1da177e4 | 951 | |
441b62c1 | 952 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 953 | |
461d696a | 954 | switch (status) { |
1da177e4 LT |
955 | case 0: |
956 | /* success */ | |
957 | break; | |
958 | case -ECONNRESET: | |
959 | case -ENOENT: | |
960 | case -ESHUTDOWN: | |
961 | /* this urb is terminated, clean up */ | |
441b62c1 | 962 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 963 | status); |
1da177e4 LT |
964 | return; |
965 | default: | |
441b62c1 | 966 | dbg("%s - nonzero urb status received: %d", __func__, |
461d696a | 967 | status); |
1da177e4 LT |
968 | goto exit; |
969 | } | |
970 | ||
441b62c1 | 971 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 TG |
972 | urb->actual_length, urb->transfer_buffer); |
973 | ||
97bb13ec | 974 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 975 | |
1da177e4 | 976 | exit: |
461d696a GKH |
977 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
978 | if (retval) | |
372db8a7 TG |
979 | dev_err(&urb->dev->dev, |
980 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 981 | __func__, retval); |
1da177e4 LT |
982 | } |
983 | ||
7d12e780 | 984 | static void pl2303_read_bulk_callback(struct urb *urb) |
1da177e4 LT |
985 | { |
986 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
987 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
988 | struct tty_struct *tty; | |
989 | unsigned char *data = urb->transfer_buffer; | |
990 | unsigned long flags; | |
991 | int i; | |
992 | int result; | |
461d696a GKH |
993 | int status = urb->status; |
994 | u8 line_status; | |
1da177e4 LT |
995 | char tty_flag; |
996 | ||
441b62c1 | 997 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 998 | |
461d696a | 999 | if (status) { |
441b62c1 | 1000 | dbg("%s - urb status = %d", __func__, status); |
1da177e4 | 1001 | if (!port->open_count) { |
441b62c1 | 1002 | dbg("%s - port is closed, exiting.", __func__); |
1da177e4 LT |
1003 | return; |
1004 | } | |
461d696a | 1005 | if (status == -EPROTO) { |
372db8a7 TG |
1006 | /* PL2303 mysteriously fails with -EPROTO reschedule |
1007 | * the read */ | |
1008 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
441b62c1 | 1009 | __func__); |
1da177e4 LT |
1010 | urb->dev = port->serial->dev; |
1011 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1012 | if (result) | |
372db8a7 TG |
1013 | dev_err(&urb->dev->dev, "%s - failed" |
1014 | " resubmitting read urb, error %d\n", | |
441b62c1 | 1015 | __func__, result); |
1da177e4 LT |
1016 | return; |
1017 | } | |
441b62c1 | 1018 | dbg("%s - unable to handle the error, exiting.", __func__); |
1da177e4 LT |
1019 | return; |
1020 | } | |
1021 | ||
441b62c1 | 1022 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 | 1023 | urb->actual_length, data); |
1da177e4 LT |
1024 | |
1025 | /* get tty_flag from status */ | |
1026 | tty_flag = TTY_NORMAL; | |
1027 | ||
1028 | spin_lock_irqsave(&priv->lock, flags); | |
461d696a | 1029 | line_status = priv->line_status; |
1da177e4 LT |
1030 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
1031 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1032 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 LT |
1033 | |
1034 | /* break takes precedence over parity, */ | |
1035 | /* which takes precedence over framing errors */ | |
461d696a | 1036 | if (line_status & UART_BREAK_ERROR ) |
1da177e4 | 1037 | tty_flag = TTY_BREAK; |
461d696a | 1038 | else if (line_status & UART_PARITY_ERROR) |
1da177e4 | 1039 | tty_flag = TTY_PARITY; |
461d696a | 1040 | else if (line_status & UART_FRAME_ERROR) |
1da177e4 | 1041 | tty_flag = TTY_FRAME; |
441b62c1 | 1042 | dbg("%s - tty_flag = %d", __func__, tty_flag); |
1da177e4 LT |
1043 | |
1044 | tty = port->tty; | |
1045 | if (tty && urb->actual_length) { | |
33f0f88f | 1046 | tty_buffer_request_room(tty, urb->actual_length + 1); |
1da177e4 | 1047 | /* overrun is special, not associated with a char */ |
461d696a | 1048 | if (line_status & UART_OVERRUN_ERROR) |
1da177e4 | 1049 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
33f0f88f | 1050 | for (i = 0; i < urb->actual_length; ++i) |
372db8a7 TG |
1051 | tty_insert_flip_char(tty, data[i], tty_flag); |
1052 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1053 | } |
1054 | ||
1055 | /* Schedule the next read _if_ we are still open */ | |
1056 | if (port->open_count) { | |
1057 | urb->dev = port->serial->dev; | |
1058 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1059 | if (result) | |
372db8a7 | 1060 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
441b62c1 | 1061 | " read urb, error %d\n", __func__, result); |
1da177e4 LT |
1062 | } |
1063 | ||
1064 | return; | |
1065 | } | |
1066 | ||
7d12e780 | 1067 | static void pl2303_write_bulk_callback(struct urb *urb) |
1da177e4 LT |
1068 | { |
1069 | struct usb_serial_port *port = (struct usb_serial_port *) urb->context; | |
1070 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1071 | int result; | |
461d696a | 1072 | int status = urb->status; |
1da177e4 | 1073 | |
441b62c1 | 1074 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1075 | |
461d696a | 1076 | switch (status) { |
1da177e4 LT |
1077 | case 0: |
1078 | /* success */ | |
1079 | break; | |
1080 | case -ECONNRESET: | |
1081 | case -ENOENT: | |
1082 | case -ESHUTDOWN: | |
1083 | /* this urb is terminated, clean up */ | |
441b62c1 | 1084 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 1085 | status); |
1da177e4 LT |
1086 | priv->write_urb_in_use = 0; |
1087 | return; | |
1088 | default: | |
1089 | /* error in the urb, so we have to resubmit it */ | |
441b62c1 HH |
1090 | dbg("%s - Overflow in write", __func__); |
1091 | dbg("%s - nonzero write bulk status received: %d", __func__, | |
461d696a | 1092 | status); |
1da177e4 LT |
1093 | port->write_urb->transfer_buffer_length = 1; |
1094 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 1095 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1096 | if (result) |
372db8a7 | 1097 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
441b62c1 | 1098 | " urb, error %d\n", __func__, result); |
1da177e4 LT |
1099 | else |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | priv->write_urb_in_use = 0; | |
1104 | ||
1105 | /* send any buffered data */ | |
1106 | pl2303_send(port); | |
1107 | } | |
1108 | ||
572d3138 TG |
1109 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1110 | static struct usb_serial_driver pl2303_device = { | |
1111 | .driver = { | |
1112 | .owner = THIS_MODULE, | |
1113 | .name = "pl2303", | |
1114 | }, | |
1115 | .id_table = id_table, | |
d9b1b787 | 1116 | .usb_driver = &pl2303_driver, |
572d3138 TG |
1117 | .num_ports = 1, |
1118 | .open = pl2303_open, | |
1119 | .close = pl2303_close, | |
1120 | .write = pl2303_write, | |
1121 | .ioctl = pl2303_ioctl, | |
1122 | .break_ctl = pl2303_break_ctl, | |
1123 | .set_termios = pl2303_set_termios, | |
1124 | .tiocmget = pl2303_tiocmget, | |
1125 | .tiocmset = pl2303_tiocmset, | |
1126 | .read_bulk_callback = pl2303_read_bulk_callback, | |
1127 | .read_int_callback = pl2303_read_int_callback, | |
1128 | .write_bulk_callback = pl2303_write_bulk_callback, | |
1129 | .write_room = pl2303_write_room, | |
1130 | .chars_in_buffer = pl2303_chars_in_buffer, | |
1131 | .attach = pl2303_startup, | |
1132 | .shutdown = pl2303_shutdown, | |
1133 | }; | |
1da177e4 | 1134 | |
372db8a7 | 1135 | static int __init pl2303_init(void) |
1da177e4 LT |
1136 | { |
1137 | int retval; | |
372db8a7 | 1138 | |
1da177e4 LT |
1139 | retval = usb_serial_register(&pl2303_device); |
1140 | if (retval) | |
1141 | goto failed_usb_serial_register; | |
1142 | retval = usb_register(&pl2303_driver); | |
1143 | if (retval) | |
1144 | goto failed_usb_register; | |
17a882fc | 1145 | info(DRIVER_DESC); |
1da177e4 LT |
1146 | return 0; |
1147 | failed_usb_register: | |
1148 | usb_serial_deregister(&pl2303_device); | |
1149 | failed_usb_serial_register: | |
1150 | return retval; | |
1151 | } | |
1152 | ||
372db8a7 | 1153 | static void __exit pl2303_exit(void) |
1da177e4 | 1154 | { |
372db8a7 TG |
1155 | usb_deregister(&pl2303_driver); |
1156 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
1157 | } |
1158 | ||
1da177e4 LT |
1159 | module_init(pl2303_init); |
1160 | module_exit(pl2303_exit); | |
1161 | ||
1162 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1163 | MODULE_LICENSE("GPL"); |
1164 | ||
1165 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1166 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1167 |