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Commit | Line | Data |
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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 | 12 | * |
3a0f43e9 AC |
13 | * See Documentation/usb/usb-serial.txt for more information on using this |
14 | * driver | |
1da177e4 | 15 | * |
1da177e4 LT |
16 | */ |
17 | ||
1da177e4 LT |
18 | #include <linux/kernel.h> |
19 | #include <linux/errno.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/tty.h> | |
23 | #include <linux/tty_driver.h> | |
24 | #include <linux/tty_flip.h> | |
25 | #include <linux/serial.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/spinlock.h> | |
3a0f43e9 | 29 | #include <linux/uaccess.h> |
1da177e4 | 30 | #include <linux/usb.h> |
a969888c | 31 | #include <linux/usb/serial.h> |
1da177e4 LT |
32 | #include "pl2303.h" |
33 | ||
34 | /* | |
35 | * Version Information | |
36 | */ | |
1da177e4 LT |
37 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
38 | ||
39 | static int debug; | |
40 | ||
41 | #define PL2303_CLOSING_WAIT (30*HZ) | |
42 | ||
43 | #define PL2303_BUF_SIZE 1024 | |
44 | #define PL2303_TMP_BUF_SIZE 1024 | |
45 | ||
1da177e4 LT |
46 | struct pl2303_buf { |
47 | unsigned int buf_size; | |
48 | char *buf_buf; | |
49 | char *buf_get; | |
50 | char *buf_put; | |
51 | }; | |
52 | ||
53 | static struct usb_device_id id_table [] = { | |
54 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, | |
55 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 56 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
57 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
58 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 59 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 60 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 61 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
1da177e4 | 62 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 63 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
64 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
65 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
66 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
67 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
68 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 69 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
70 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
71 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
72 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
73 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
74 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
75 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
76 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
77 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 78 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 79 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 80 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 81 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 82 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 83 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
84 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
85 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 86 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 87 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 88 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 89 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 90 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 91 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 92 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 93 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 94 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 95 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 96 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 97 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
49276560 | 98 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
1da177e4 LT |
99 | { } /* Terminating entry */ |
100 | }; | |
101 | ||
372db8a7 | 102 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
103 | |
104 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
105 | .name = "pl2303", |
106 | .probe = usb_serial_probe, | |
107 | .disconnect = usb_serial_disconnect, | |
108 | .id_table = id_table, | |
fcf9e55e SS |
109 | .suspend = usb_serial_suspend, |
110 | .resume = usb_serial_resume, | |
ba9dc657 | 111 | .no_dynamic_id = 1, |
fcf9e55e | 112 | .supports_autosuspend = 1, |
1da177e4 LT |
113 | }; |
114 | ||
115 | #define SET_LINE_REQUEST_TYPE 0x21 | |
116 | #define SET_LINE_REQUEST 0x20 | |
117 | ||
118 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
119 | #define SET_CONTROL_REQUEST 0x22 | |
120 | #define CONTROL_DTR 0x01 | |
121 | #define CONTROL_RTS 0x02 | |
122 | ||
123 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 124 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
125 | #define BREAK_ON 0xffff |
126 | #define BREAK_OFF 0x0000 | |
127 | ||
128 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
129 | #define GET_LINE_REQUEST 0x21 | |
130 | ||
131 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
132 | #define VENDOR_WRITE_REQUEST 0x01 | |
133 | ||
134 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
135 | #define VENDOR_READ_REQUEST 0x01 | |
136 | ||
137 | #define UART_STATE 0x08 | |
138 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
139 | #define UART_DCD 0x01 | |
140 | #define UART_DSR 0x02 | |
141 | #define UART_BREAK_ERROR 0x04 | |
142 | #define UART_RING 0x08 | |
143 | #define UART_FRAME_ERROR 0x10 | |
144 | #define UART_PARITY_ERROR 0x20 | |
145 | #define UART_OVERRUN_ERROR 0x40 | |
146 | #define UART_CTS 0x80 | |
147 | ||
1da177e4 LT |
148 | |
149 | enum pl2303_type { | |
150 | type_0, /* don't know the difference between type 0 and */ | |
151 | type_1, /* type 1, until someone from prolific tells us... */ | |
152 | HX, /* HX version of the pl2303 chip */ | |
153 | }; | |
154 | ||
155 | struct pl2303_private { | |
156 | spinlock_t lock; | |
157 | struct pl2303_buf *buf; | |
158 | int write_urb_in_use; | |
159 | wait_queue_head_t delta_msr_wait; | |
160 | u8 line_control; | |
161 | u8 line_status; | |
1da177e4 LT |
162 | enum pl2303_type type; |
163 | }; | |
164 | ||
572d3138 TG |
165 | /* |
166 | * pl2303_buf_alloc | |
167 | * | |
168 | * Allocate a circular buffer and all associated memory. | |
169 | */ | |
170 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) | |
171 | { | |
172 | struct pl2303_buf *pb; | |
173 | ||
174 | if (size == 0) | |
175 | return NULL; | |
176 | ||
5cbded58 | 177 | pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); |
572d3138 TG |
178 | if (pb == NULL) |
179 | return NULL; | |
180 | ||
181 | pb->buf_buf = kmalloc(size, GFP_KERNEL); | |
182 | if (pb->buf_buf == NULL) { | |
183 | kfree(pb); | |
184 | return NULL; | |
185 | } | |
186 | ||
187 | pb->buf_size = size; | |
188 | pb->buf_get = pb->buf_put = pb->buf_buf; | |
189 | ||
190 | return pb; | |
191 | } | |
192 | ||
193 | /* | |
194 | * pl2303_buf_free | |
195 | * | |
196 | * Free the buffer and all associated memory. | |
197 | */ | |
198 | static void pl2303_buf_free(struct pl2303_buf *pb) | |
199 | { | |
200 | if (pb) { | |
201 | kfree(pb->buf_buf); | |
202 | kfree(pb); | |
203 | } | |
204 | } | |
205 | ||
206 | /* | |
207 | * pl2303_buf_clear | |
208 | * | |
209 | * Clear out all data in the circular buffer. | |
210 | */ | |
211 | static void pl2303_buf_clear(struct pl2303_buf *pb) | |
212 | { | |
213 | if (pb != NULL) | |
214 | pb->buf_get = pb->buf_put; | |
215 | /* equivalent to a get of all data available */ | |
216 | } | |
217 | ||
218 | /* | |
219 | * pl2303_buf_data_avail | |
220 | * | |
221 | * Return the number of bytes of data available in the circular | |
222 | * buffer. | |
223 | */ | |
224 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) | |
225 | { | |
226 | if (pb == NULL) | |
227 | return 0; | |
228 | ||
3a0f43e9 | 229 | return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; |
572d3138 TG |
230 | } |
231 | ||
232 | /* | |
233 | * pl2303_buf_space_avail | |
234 | * | |
235 | * Return the number of bytes of space available in the circular | |
236 | * buffer. | |
237 | */ | |
238 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) | |
239 | { | |
240 | if (pb == NULL) | |
241 | return 0; | |
242 | ||
3a0f43e9 | 243 | return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; |
572d3138 TG |
244 | } |
245 | ||
246 | /* | |
247 | * pl2303_buf_put | |
248 | * | |
249 | * Copy data data from a user buffer and put it into the circular buffer. | |
250 | * Restrict to the amount of space available. | |
251 | * | |
252 | * Return the number of bytes copied. | |
253 | */ | |
254 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, | |
255 | unsigned int count) | |
256 | { | |
257 | unsigned int len; | |
258 | ||
259 | if (pb == NULL) | |
260 | return 0; | |
261 | ||
262 | len = pl2303_buf_space_avail(pb); | |
263 | if (count > len) | |
264 | count = len; | |
265 | ||
266 | if (count == 0) | |
267 | return 0; | |
268 | ||
269 | len = pb->buf_buf + pb->buf_size - pb->buf_put; | |
270 | if (count > len) { | |
271 | memcpy(pb->buf_put, buf, len); | |
272 | memcpy(pb->buf_buf, buf+len, count - len); | |
273 | pb->buf_put = pb->buf_buf + count - len; | |
274 | } else { | |
275 | memcpy(pb->buf_put, buf, count); | |
276 | if (count < len) | |
277 | pb->buf_put += count; | |
278 | else /* count == len */ | |
279 | pb->buf_put = pb->buf_buf; | |
280 | } | |
281 | ||
282 | return count; | |
283 | } | |
284 | ||
285 | /* | |
286 | * pl2303_buf_get | |
287 | * | |
288 | * Get data from the circular buffer and copy to the given buffer. | |
289 | * Restrict to the amount of data available. | |
290 | * | |
291 | * Return the number of bytes copied. | |
292 | */ | |
293 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, | |
294 | unsigned int count) | |
295 | { | |
296 | unsigned int len; | |
297 | ||
298 | if (pb == NULL) | |
299 | return 0; | |
300 | ||
301 | len = pl2303_buf_data_avail(pb); | |
302 | if (count > len) | |
303 | count = len; | |
304 | ||
305 | if (count == 0) | |
306 | return 0; | |
307 | ||
308 | len = pb->buf_buf + pb->buf_size - pb->buf_get; | |
309 | if (count > len) { | |
310 | memcpy(buf, pb->buf_get, len); | |
311 | memcpy(buf+len, pb->buf_buf, count - len); | |
312 | pb->buf_get = pb->buf_buf + count - len; | |
313 | } else { | |
314 | memcpy(buf, pb->buf_get, count); | |
315 | if (count < len) | |
316 | pb->buf_get += count; | |
317 | else /* count == len */ | |
318 | pb->buf_get = pb->buf_buf; | |
319 | } | |
320 | ||
321 | return count; | |
322 | } | |
1da177e4 | 323 | |
eb44da0b SS |
324 | static int pl2303_vendor_read(__u16 value, __u16 index, |
325 | struct usb_serial *serial, unsigned char *buf) | |
326 | { | |
327 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
328 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
329 | value, index, buf, 1, 100); | |
330 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, | |
331 | VENDOR_READ_REQUEST, value, index, res, buf[0]); | |
332 | return res; | |
333 | } | |
334 | ||
335 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
336 | struct usb_serial *serial) | |
337 | { | |
338 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
339 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
340 | value, index, NULL, 0, 100); | |
341 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, | |
342 | VENDOR_WRITE_REQUEST, value, index, res); | |
343 | return res; | |
344 | } | |
345 | ||
372db8a7 | 346 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
347 | { |
348 | struct pl2303_private *priv; | |
349 | enum pl2303_type type = type_0; | |
3e152505 | 350 | unsigned char *buf; |
1da177e4 LT |
351 | int i; |
352 | ||
3e152505 SS |
353 | buf = kmalloc(10, GFP_KERNEL); |
354 | if (buf == NULL) | |
355 | return -ENOMEM; | |
356 | ||
1da177e4 LT |
357 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
358 | type = type_0; | |
359 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
360 | type = HX; | |
361 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
362 | type = type_1; | |
363 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
364 | type = type_1; | |
365 | dbg("device type: %d", type); | |
366 | ||
367 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 368 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
369 | if (!priv) |
370 | goto cleanup; | |
1da177e4 LT |
371 | spin_lock_init(&priv->lock); |
372 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
373 | if (priv->buf == NULL) { | |
374 | kfree(priv); | |
375 | goto cleanup; | |
376 | } | |
377 | init_waitqueue_head(&priv->delta_msr_wait); | |
378 | priv->type = type; | |
379 | usb_set_serial_port_data(serial->port[i], priv); | |
380 | } | |
3e152505 SS |
381 | |
382 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
383 | pl2303_vendor_write(0x0404, 0, serial); | |
384 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
385 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
386 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
387 | pl2303_vendor_write(0x0404, 1, serial); | |
388 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
389 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
390 | pl2303_vendor_write(0, 1, serial); | |
391 | pl2303_vendor_write(1, 0, serial); | |
392 | if (type == HX) | |
393 | pl2303_vendor_write(2, 0x44, serial); | |
394 | else | |
395 | pl2303_vendor_write(2, 0x24, serial); | |
396 | ||
397 | kfree(buf); | |
1da177e4 LT |
398 | return 0; |
399 | ||
400 | cleanup: | |
3e152505 | 401 | kfree(buf); |
3a0f43e9 | 402 | for (--i; i >= 0; --i) { |
1da177e4 LT |
403 | priv = usb_get_serial_port_data(serial->port[i]); |
404 | pl2303_buf_free(priv->buf); | |
405 | kfree(priv); | |
406 | usb_set_serial_port_data(serial->port[i], NULL); | |
407 | } | |
408 | return -ENOMEM; | |
409 | } | |
410 | ||
372db8a7 | 411 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
412 | { |
413 | int retval; | |
3a0f43e9 | 414 | |
372db8a7 TG |
415 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
416 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
417 | value, 0, NULL, 0, 100); | |
441b62c1 | 418 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
1da177e4 LT |
419 | return retval; |
420 | } | |
421 | ||
1da177e4 LT |
422 | static void pl2303_send(struct usb_serial_port *port) |
423 | { | |
424 | int count, result; | |
425 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
426 | unsigned long flags; | |
427 | ||
441b62c1 | 428 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
429 | |
430 | spin_lock_irqsave(&priv->lock, flags); | |
431 | ||
432 | if (priv->write_urb_in_use) { | |
433 | spin_unlock_irqrestore(&priv->lock, flags); | |
434 | return; | |
435 | } | |
436 | ||
437 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 438 | port->bulk_out_size); |
1da177e4 LT |
439 | |
440 | if (count == 0) { | |
441 | spin_unlock_irqrestore(&priv->lock, flags); | |
442 | return; | |
443 | } | |
444 | ||
445 | priv->write_urb_in_use = 1; | |
446 | ||
447 | spin_unlock_irqrestore(&priv->lock, flags); | |
448 | ||
441b62c1 | 449 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
372db8a7 | 450 | port->write_urb->transfer_buffer); |
1da177e4 LT |
451 | |
452 | port->write_urb->transfer_buffer_length = count; | |
453 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 454 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 455 | if (result) { |
372db8a7 | 456 | dev_err(&port->dev, "%s - failed submitting write urb," |
441b62c1 | 457 | " error %d\n", __func__, result); |
1da177e4 | 458 | priv->write_urb_in_use = 0; |
3a0f43e9 | 459 | /* TODO: reschedule pl2303_send */ |
1da177e4 LT |
460 | } |
461 | ||
cf2c7481 | 462 | usb_serial_port_softint(port); |
1da177e4 LT |
463 | } |
464 | ||
95da310e AC |
465 | static int pl2303_write(struct tty_struct *tty, struct usb_serial_port *port, |
466 | const unsigned char *buf, int count) | |
572d3138 TG |
467 | { |
468 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
469 | unsigned long flags; | |
470 | ||
441b62c1 | 471 | dbg("%s - port %d, %d bytes", __func__, port->number, count); |
572d3138 TG |
472 | |
473 | if (!count) | |
474 | return count; | |
475 | ||
476 | spin_lock_irqsave(&priv->lock, flags); | |
477 | count = pl2303_buf_put(priv->buf, buf, count); | |
478 | spin_unlock_irqrestore(&priv->lock, flags); | |
479 | ||
480 | pl2303_send(port); | |
481 | ||
482 | return count; | |
483 | } | |
484 | ||
95da310e | 485 | static int pl2303_write_room(struct tty_struct *tty) |
1da177e4 | 486 | { |
95da310e | 487 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
488 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
489 | int room = 0; | |
490 | unsigned long flags; | |
491 | ||
441b62c1 | 492 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
493 | |
494 | spin_lock_irqsave(&priv->lock, flags); | |
495 | room = pl2303_buf_space_avail(priv->buf); | |
496 | spin_unlock_irqrestore(&priv->lock, flags); | |
497 | ||
441b62c1 | 498 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
499 | return room; |
500 | } | |
501 | ||
95da310e | 502 | static int pl2303_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 503 | { |
95da310e | 504 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
505 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
506 | int chars = 0; | |
507 | unsigned long flags; | |
508 | ||
441b62c1 | 509 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
510 | |
511 | spin_lock_irqsave(&priv->lock, flags); | |
512 | chars = pl2303_buf_data_avail(priv->buf); | |
513 | spin_unlock_irqrestore(&priv->lock, flags); | |
514 | ||
441b62c1 | 515 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
516 | return chars; |
517 | } | |
518 | ||
95da310e AC |
519 | static void pl2303_set_termios(struct tty_struct *tty, |
520 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
521 | { |
522 | struct usb_serial *serial = port->serial; | |
523 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
524 | unsigned long flags; | |
525 | unsigned int cflag; | |
526 | unsigned char *buf; | |
527 | int baud; | |
528 | int i; | |
529 | u8 control; | |
530 | ||
441b62c1 | 531 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 532 | |
bf5e5834 AC |
533 | /* The PL2303 is reported to lose bytes if you change |
534 | serial settings even to the same values as before. Thus | |
535 | we actually need to filter in this specific case */ | |
536 | ||
95da310e | 537 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
bf5e5834 AC |
538 | return; |
539 | ||
95da310e | 540 | cflag = tty->termios->c_cflag; |
1da177e4 | 541 | |
372db8a7 | 542 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 543 | if (!buf) { |
441b62c1 | 544 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
a5b6f60c | 545 | /* Report back no change occurred */ |
95da310e | 546 | *tty->termios = *old_termios; |
1da177e4 LT |
547 | return; |
548 | } | |
1da177e4 | 549 | |
372db8a7 TG |
550 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
551 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
552 | 0, 0, buf, 7, 100); | |
553 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
554 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
555 | |
556 | if (cflag & CSIZE) { | |
557 | switch (cflag & CSIZE) { | |
3a0f43e9 AC |
558 | case CS5: |
559 | buf[6] = 5; | |
560 | break; | |
561 | case CS6: | |
562 | buf[6] = 6; | |
563 | break; | |
564 | case CS7: | |
565 | buf[6] = 7; | |
566 | break; | |
567 | default: | |
568 | case CS8: | |
569 | buf[6] = 8; | |
570 | break; | |
1da177e4 | 571 | } |
441b62c1 | 572 | dbg("%s - data bits = %d", __func__, buf[6]); |
1da177e4 LT |
573 | } |
574 | ||
95da310e | 575 | baud = tty_get_baud_rate(tty); |
441b62c1 | 576 | dbg("%s - baud = %d", __func__, baud); |
1da177e4 LT |
577 | if (baud) { |
578 | buf[0] = baud & 0xff; | |
579 | buf[1] = (baud >> 8) & 0xff; | |
580 | buf[2] = (baud >> 16) & 0xff; | |
581 | buf[3] = (baud >> 24) & 0xff; | |
582 | } | |
583 | ||
584 | /* For reference buf[4]=0 is 1 stop bits */ | |
585 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
586 | /* For reference buf[4]=2 is 2 stop bits */ | |
587 | if (cflag & CSTOPB) { | |
588 | buf[4] = 2; | |
441b62c1 | 589 | dbg("%s - stop bits = 2", __func__); |
1da177e4 LT |
590 | } else { |
591 | buf[4] = 0; | |
441b62c1 | 592 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
593 | } |
594 | ||
595 | if (cflag & PARENB) { | |
596 | /* For reference buf[5]=0 is none parity */ | |
597 | /* For reference buf[5]=1 is odd parity */ | |
598 | /* For reference buf[5]=2 is even parity */ | |
599 | /* For reference buf[5]=3 is mark parity */ | |
600 | /* For reference buf[5]=4 is space parity */ | |
601 | if (cflag & PARODD) { | |
602 | buf[5] = 1; | |
441b62c1 | 603 | dbg("%s - parity = odd", __func__); |
1da177e4 LT |
604 | } else { |
605 | buf[5] = 2; | |
441b62c1 | 606 | dbg("%s - parity = even", __func__); |
1da177e4 LT |
607 | } |
608 | } else { | |
609 | buf[5] = 0; | |
441b62c1 | 610 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
611 | } |
612 | ||
372db8a7 TG |
613 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
614 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
615 | 0, 0, buf, 7, 100); | |
616 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
617 | |
618 | /* change control lines if we are switching to or from B0 */ | |
619 | spin_lock_irqsave(&priv->lock, flags); | |
620 | control = priv->line_control; | |
621 | if ((cflag & CBAUD) == B0) | |
622 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
623 | else | |
624 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
625 | if (control != priv->line_control) { | |
626 | control = priv->line_control; | |
627 | spin_unlock_irqrestore(&priv->lock, flags); | |
628 | set_control_lines(serial->dev, control); | |
629 | } else { | |
630 | spin_unlock_irqrestore(&priv->lock, flags); | |
631 | } | |
372db8a7 | 632 | |
1da177e4 LT |
633 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
634 | ||
372db8a7 TG |
635 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
636 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
637 | 0, 0, buf, 7, 100); | |
638 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
639 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
640 | ||
641 | if (cflag & CRTSCTS) { | |
1da177e4 | 642 | if (priv->type == HX) |
eb44da0b | 643 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 644 | else |
eb44da0b | 645 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 646 | } else { |
eb44da0b | 647 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 648 | } |
572d3138 | 649 | |
df64c471 AC |
650 | /* FIXME: Need to read back resulting baud rate */ |
651 | if (baud) | |
95da310e | 652 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 653 | |
572d3138 TG |
654 | kfree(buf); |
655 | } | |
656 | ||
335f8514 AC |
657 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
658 | { | |
659 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
660 | unsigned long flags; | |
661 | u8 control; | |
662 | ||
663 | spin_lock_irqsave(&priv->lock, flags); | |
664 | /* Change DTR and RTS */ | |
665 | if (on) | |
666 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
667 | else | |
668 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
669 | control = priv->line_control; | |
670 | spin_unlock_irqrestore(&priv->lock, flags); | |
671 | set_control_lines(port->serial->dev, control); | |
672 | } | |
673 | ||
674 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 TG |
675 | { |
676 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
677 | unsigned long flags; | |
572d3138 | 678 | |
441b62c1 | 679 | dbg("%s - port %d", __func__, port->number); |
572d3138 | 680 | |
572d3138 | 681 | spin_lock_irqsave(&priv->lock, flags); |
572d3138 TG |
682 | /* clear out any remaining data in the buffer */ |
683 | pl2303_buf_clear(priv->buf); | |
684 | spin_unlock_irqrestore(&priv->lock, flags); | |
685 | ||
572d3138 | 686 | /* shutdown our urbs */ |
441b62c1 | 687 | dbg("%s - shutting down urbs", __func__); |
572d3138 TG |
688 | usb_kill_urb(port->write_urb); |
689 | usb_kill_urb(port->read_urb); | |
690 | usb_kill_urb(port->interrupt_in_urb); | |
691 | ||
1da177e4 LT |
692 | } |
693 | ||
a509a7e4 | 694 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 695 | { |
606d099c | 696 | struct ktermios tmp_termios; |
1da177e4 LT |
697 | struct usb_serial *serial = port->serial; |
698 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1da177e4 LT |
699 | int result; |
700 | ||
441b62c1 | 701 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 702 | |
1694899f D |
703 | if (priv->type != HX) { |
704 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
705 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 706 | } else { |
1da177e4 | 707 | /* reset upstream data pipes */ |
eb44da0b SS |
708 | pl2303_vendor_write(8, 0, serial); |
709 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
710 | } |
711 | ||
1da177e4 | 712 | /* Setup termios */ |
95da310e AC |
713 | if (tty) |
714 | pl2303_set_termios(tty, port, &tmp_termios); | |
1da177e4 | 715 | |
441b62c1 | 716 | dbg("%s - submitting read urb", __func__); |
1da177e4 | 717 | port->read_urb->dev = serial->dev; |
372db8a7 | 718 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 719 | if (result) { |
372db8a7 | 720 | dev_err(&port->dev, "%s - failed submitting read urb," |
441b62c1 | 721 | " error %d\n", __func__, result); |
335f8514 | 722 | pl2303_close(port); |
1da177e4 LT |
723 | return -EPROTO; |
724 | } | |
725 | ||
441b62c1 | 726 | dbg("%s - submitting interrupt urb", __func__); |
1da177e4 | 727 | port->interrupt_in_urb->dev = serial->dev; |
372db8a7 | 728 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 729 | if (result) { |
372db8a7 | 730 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 731 | " error %d\n", __func__, result); |
335f8514 | 732 | pl2303_close(port); |
1da177e4 LT |
733 | return -EPROTO; |
734 | } | |
335f8514 | 735 | port->port.drain_delay = 256; |
1da177e4 LT |
736 | return 0; |
737 | } | |
738 | ||
95da310e | 739 | static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, |
372db8a7 | 740 | unsigned int set, unsigned int clear) |
1da177e4 | 741 | { |
95da310e | 742 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
743 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
744 | unsigned long flags; | |
745 | u8 control; | |
746 | ||
6fdd8e8e FL |
747 | if (!usb_get_intfdata(port->serial->interface)) |
748 | return -ENODEV; | |
749 | ||
372db8a7 | 750 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
751 | if (set & TIOCM_RTS) |
752 | priv->line_control |= CONTROL_RTS; | |
753 | if (set & TIOCM_DTR) | |
754 | priv->line_control |= CONTROL_DTR; | |
755 | if (clear & TIOCM_RTS) | |
756 | priv->line_control &= ~CONTROL_RTS; | |
757 | if (clear & TIOCM_DTR) | |
758 | priv->line_control &= ~CONTROL_DTR; | |
759 | control = priv->line_control; | |
372db8a7 | 760 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 761 | |
372db8a7 | 762 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
763 | } |
764 | ||
95da310e | 765 | static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 766 | { |
95da310e | 767 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
768 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
769 | unsigned long flags; | |
770 | unsigned int mcr; | |
771 | unsigned int status; | |
772 | unsigned int result; | |
773 | ||
441b62c1 | 774 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 775 | |
6fdd8e8e FL |
776 | if (!usb_get_intfdata(port->serial->interface)) |
777 | return -ENODEV; | |
778 | ||
372db8a7 | 779 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
780 | mcr = priv->line_control; |
781 | status = priv->line_status; | |
372db8a7 | 782 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
783 | |
784 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
785 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
786 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
787 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
788 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
789 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
790 | ||
441b62c1 | 791 | dbg("%s - result = %x", __func__, result); |
1da177e4 LT |
792 | |
793 | return result; | |
794 | } | |
795 | ||
335f8514 AC |
796 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
797 | { | |
798 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
799 | if (priv->line_status & UART_DCD) | |
800 | return 1; | |
801 | return 0; | |
802 | } | |
803 | ||
1da177e4 LT |
804 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) |
805 | { | |
806 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
807 | unsigned long flags; | |
808 | unsigned int prevstatus; | |
809 | unsigned int status; | |
810 | unsigned int changed; | |
811 | ||
372db8a7 | 812 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 813 | prevstatus = priv->line_status; |
372db8a7 | 814 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
815 | |
816 | while (1) { | |
817 | interruptible_sleep_on(&priv->delta_msr_wait); | |
818 | /* see if a signal did it */ | |
819 | if (signal_pending(current)) | |
820 | return -ERESTARTSYS; | |
372db8a7 TG |
821 | |
822 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 823 | status = priv->line_status; |
372db8a7 TG |
824 | spin_unlock_irqrestore(&priv->lock, flags); |
825 | ||
3a0f43e9 | 826 | changed = prevstatus ^ status; |
372db8a7 | 827 | |
1da177e4 LT |
828 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
829 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
830 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 831 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
832 | return 0; |
833 | } | |
834 | prevstatus = status; | |
835 | } | |
836 | /* NOTREACHED */ | |
837 | return 0; | |
838 | } | |
839 | ||
95da310e | 840 | static int pl2303_ioctl(struct tty_struct *tty, struct file *file, |
372db8a7 | 841 | unsigned int cmd, unsigned long arg) |
1da177e4 | 842 | { |
95da310e | 843 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 844 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
1da177e4 LT |
845 | |
846 | switch (cmd) { | |
3a0f43e9 AC |
847 | case TIOCMIWAIT: |
848 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
849 | return wait_modem_info(port, arg); | |
850 | default: | |
851 | dbg("%s not supported = 0x%04x", __func__, cmd); | |
852 | break; | |
1da177e4 | 853 | } |
1da177e4 LT |
854 | return -ENOIOCTLCMD; |
855 | } | |
856 | ||
95da310e | 857 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 858 | { |
95da310e | 859 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
860 | struct usb_serial *serial = port->serial; |
861 | u16 state; | |
862 | int result; | |
863 | ||
441b62c1 | 864 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
865 | |
866 | if (break_state == 0) | |
867 | state = BREAK_OFF; | |
868 | else | |
869 | state = BREAK_ON; | |
3a0f43e9 AC |
870 | dbg("%s - turning break %s", __func__, |
871 | state == BREAK_OFF ? "off" : "on"); | |
1da177e4 | 872 | |
372db8a7 TG |
873 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
874 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
875 | 0, NULL, 0, 100); | |
1da177e4 | 876 | if (result) |
441b62c1 | 877 | dbg("%s - error sending break = %d", __func__, result); |
1da177e4 LT |
878 | } |
879 | ||
f9c99bb8 | 880 | static void pl2303_release(struct usb_serial *serial) |
1da177e4 LT |
881 | { |
882 | int i; | |
883 | struct pl2303_private *priv; | |
884 | ||
441b62c1 | 885 | dbg("%s", __func__); |
1da177e4 LT |
886 | |
887 | for (i = 0; i < serial->num_ports; ++i) { | |
888 | priv = usb_get_serial_port_data(serial->port[i]); | |
889 | if (priv) { | |
890 | pl2303_buf_free(priv->buf); | |
891 | kfree(priv); | |
1da177e4 | 892 | } |
372db8a7 | 893 | } |
1da177e4 LT |
894 | } |
895 | ||
97bb13ec FL |
896 | static void pl2303_update_line_status(struct usb_serial_port *port, |
897 | unsigned char *data, | |
898 | unsigned int actual_length) | |
899 | { | |
900 | ||
901 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
902 | unsigned long flags; | |
903 | u8 status_idx = UART_STATE; | |
95f209f9 | 904 | u8 length = UART_STATE + 1; |
9c537616 | 905 | u16 idv, idp; |
97bb13ec | 906 | |
9c537616 TG |
907 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
908 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
909 | ||
910 | ||
911 | if (idv == SIEMENS_VENDOR_ID) { | |
912 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
913 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
914 | idp == SIEMENS_PRODUCT_ID_X75) { | |
915 | ||
916 | length = 1; | |
917 | status_idx = 0; | |
918 | } | |
97bb13ec FL |
919 | } |
920 | ||
921 | if (actual_length < length) | |
a009b75a | 922 | return; |
97bb13ec | 923 | |
3a0f43e9 | 924 | /* Save off the uart status for others to look at */ |
97bb13ec FL |
925 | spin_lock_irqsave(&priv->lock, flags); |
926 | priv->line_status = data[status_idx]; | |
927 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
928 | if (priv->line_status & UART_BREAK_ERROR) |
929 | usb_serial_handle_break(port); | |
372db8a7 | 930 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 931 | } |
1da177e4 | 932 | |
7d12e780 | 933 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 934 | { |
cdc97792 | 935 | struct usb_serial_port *port = urb->context; |
1da177e4 | 936 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 937 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
938 | int status = urb->status; |
939 | int retval; | |
1da177e4 | 940 | |
441b62c1 | 941 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 942 | |
461d696a | 943 | switch (status) { |
1da177e4 LT |
944 | case 0: |
945 | /* success */ | |
946 | break; | |
947 | case -ECONNRESET: | |
948 | case -ENOENT: | |
949 | case -ESHUTDOWN: | |
950 | /* this urb is terminated, clean up */ | |
441b62c1 | 951 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 952 | status); |
1da177e4 LT |
953 | return; |
954 | default: | |
441b62c1 | 955 | dbg("%s - nonzero urb status received: %d", __func__, |
461d696a | 956 | status); |
1da177e4 LT |
957 | goto exit; |
958 | } | |
959 | ||
441b62c1 | 960 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 TG |
961 | urb->actual_length, urb->transfer_buffer); |
962 | ||
97bb13ec | 963 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 964 | |
1da177e4 | 965 | exit: |
461d696a GKH |
966 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
967 | if (retval) | |
372db8a7 TG |
968 | dev_err(&urb->dev->dev, |
969 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 970 | __func__, retval); |
1da177e4 LT |
971 | } |
972 | ||
d4fc4a7b AC |
973 | static void pl2303_push_data(struct tty_struct *tty, |
974 | struct usb_serial_port *port, struct urb *urb, | |
975 | u8 line_status) | |
976 | { | |
977 | unsigned char *data = urb->transfer_buffer; | |
978 | /* get tty_flag from status */ | |
979 | char tty_flag = TTY_NORMAL; | |
980 | /* break takes precedence over parity, */ | |
981 | /* which takes precedence over framing errors */ | |
982 | if (line_status & UART_BREAK_ERROR) | |
983 | tty_flag = TTY_BREAK; | |
984 | else if (line_status & UART_PARITY_ERROR) | |
985 | tty_flag = TTY_PARITY; | |
986 | else if (line_status & UART_FRAME_ERROR) | |
987 | tty_flag = TTY_FRAME; | |
988 | dbg("%s - tty_flag = %d", __func__, tty_flag); | |
989 | ||
990 | tty_buffer_request_room(tty, urb->actual_length + 1); | |
991 | /* overrun is special, not associated with a char */ | |
992 | if (line_status & UART_OVERRUN_ERROR) | |
993 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
994 | if (port->console && port->sysrq) { | |
995 | int i; | |
996 | for (i = 0; i < urb->actual_length; ++i) | |
997 | if (!usb_serial_handle_sysrq_char(tty, port, data[i])) | |
998 | tty_insert_flip_char(tty, data[i], tty_flag); | |
999 | } else | |
1000 | tty_insert_flip_string(tty, data, urb->actual_length); | |
1001 | tty_flip_buffer_push(tty); | |
1002 | } | |
1003 | ||
7d12e780 | 1004 | static void pl2303_read_bulk_callback(struct urb *urb) |
1da177e4 | 1005 | { |
cdc97792 | 1006 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1007 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
1008 | struct tty_struct *tty; | |
1da177e4 | 1009 | unsigned long flags; |
1da177e4 | 1010 | int result; |
461d696a GKH |
1011 | int status = urb->status; |
1012 | u8 line_status; | |
1da177e4 | 1013 | |
441b62c1 | 1014 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1015 | |
461d696a | 1016 | if (status) { |
441b62c1 | 1017 | dbg("%s - urb status = %d", __func__, status); |
95da310e | 1018 | if (!port->port.count) { |
441b62c1 | 1019 | dbg("%s - port is closed, exiting.", __func__); |
1da177e4 LT |
1020 | return; |
1021 | } | |
461d696a | 1022 | if (status == -EPROTO) { |
372db8a7 TG |
1023 | /* PL2303 mysteriously fails with -EPROTO reschedule |
1024 | * the read */ | |
1025 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
441b62c1 | 1026 | __func__); |
1da177e4 LT |
1027 | urb->dev = port->serial->dev; |
1028 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1029 | if (result) | |
372db8a7 TG |
1030 | dev_err(&urb->dev->dev, "%s - failed" |
1031 | " resubmitting read urb, error %d\n", | |
441b62c1 | 1032 | __func__, result); |
1da177e4 LT |
1033 | return; |
1034 | } | |
441b62c1 | 1035 | dbg("%s - unable to handle the error, exiting.", __func__); |
1da177e4 LT |
1036 | return; |
1037 | } | |
1038 | ||
441b62c1 | 1039 | usb_serial_debug_data(debug, &port->dev, __func__, |
d4fc4a7b | 1040 | urb->actual_length, urb->transfer_buffer); |
1da177e4 LT |
1041 | |
1042 | spin_lock_irqsave(&priv->lock, flags); | |
461d696a | 1043 | line_status = priv->line_status; |
1da177e4 LT |
1044 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
1045 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1046 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 | 1047 | |
4a90f09b | 1048 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 1049 | if (tty && urb->actual_length) { |
d4fc4a7b | 1050 | pl2303_push_data(tty, port, urb, line_status); |
1da177e4 | 1051 | } |
4a90f09b | 1052 | tty_kref_put(tty); |
1da177e4 | 1053 | /* Schedule the next read _if_ we are still open */ |
95da310e | 1054 | if (port->port.count) { |
1da177e4 LT |
1055 | urb->dev = port->serial->dev; |
1056 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1057 | if (result) | |
372db8a7 | 1058 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
441b62c1 | 1059 | " read urb, error %d\n", __func__, result); |
1da177e4 LT |
1060 | } |
1061 | ||
1062 | return; | |
1063 | } | |
1064 | ||
7d12e780 | 1065 | static void pl2303_write_bulk_callback(struct urb *urb) |
1da177e4 | 1066 | { |
cdc97792 | 1067 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1068 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
1069 | int result; | |
461d696a | 1070 | int status = urb->status; |
1da177e4 | 1071 | |
441b62c1 | 1072 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1073 | |
461d696a | 1074 | switch (status) { |
1da177e4 LT |
1075 | case 0: |
1076 | /* success */ | |
1077 | break; | |
1078 | case -ECONNRESET: | |
1079 | case -ENOENT: | |
1080 | case -ESHUTDOWN: | |
1081 | /* this urb is terminated, clean up */ | |
441b62c1 | 1082 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 1083 | status); |
1da177e4 LT |
1084 | priv->write_urb_in_use = 0; |
1085 | return; | |
1086 | default: | |
1087 | /* error in the urb, so we have to resubmit it */ | |
441b62c1 HH |
1088 | dbg("%s - Overflow in write", __func__); |
1089 | dbg("%s - nonzero write bulk status received: %d", __func__, | |
461d696a | 1090 | status); |
1da177e4 LT |
1091 | port->write_urb->transfer_buffer_length = 1; |
1092 | port->write_urb->dev = port->serial->dev; | |
372db8a7 | 1093 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1094 | if (result) |
372db8a7 | 1095 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
441b62c1 | 1096 | " urb, error %d\n", __func__, result); |
1da177e4 LT |
1097 | else |
1098 | return; | |
1099 | } | |
1100 | ||
1101 | priv->write_urb_in_use = 0; | |
1102 | ||
1103 | /* send any buffered data */ | |
1104 | pl2303_send(port); | |
1105 | } | |
1106 | ||
572d3138 TG |
1107 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1108 | static struct usb_serial_driver pl2303_device = { | |
1109 | .driver = { | |
1110 | .owner = THIS_MODULE, | |
1111 | .name = "pl2303", | |
1112 | }, | |
1113 | .id_table = id_table, | |
d9b1b787 | 1114 | .usb_driver = &pl2303_driver, |
572d3138 TG |
1115 | .num_ports = 1, |
1116 | .open = pl2303_open, | |
1117 | .close = pl2303_close, | |
335f8514 AC |
1118 | .dtr_rts = pl2303_dtr_rts, |
1119 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
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, | |
f9c99bb8 | 1132 | .release = pl2303_release, |
572d3138 | 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; | |
c197a8db | 1145 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
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 |