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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 | ||
7d40d7e8 | 53 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
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) }, |
35904e6b | 99 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 100 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
1da177e4 LT |
101 | { } /* Terminating entry */ |
102 | }; | |
103 | ||
372db8a7 | 104 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
105 | |
106 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
107 | .name = "pl2303", |
108 | .probe = usb_serial_probe, | |
109 | .disconnect = usb_serial_disconnect, | |
110 | .id_table = id_table, | |
fcf9e55e SS |
111 | .suspend = usb_serial_suspend, |
112 | .resume = usb_serial_resume, | |
ba9dc657 | 113 | .no_dynamic_id = 1, |
fcf9e55e | 114 | .supports_autosuspend = 1, |
1da177e4 LT |
115 | }; |
116 | ||
117 | #define SET_LINE_REQUEST_TYPE 0x21 | |
118 | #define SET_LINE_REQUEST 0x20 | |
119 | ||
120 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
121 | #define SET_CONTROL_REQUEST 0x22 | |
122 | #define CONTROL_DTR 0x01 | |
123 | #define CONTROL_RTS 0x02 | |
124 | ||
125 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 126 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
127 | #define BREAK_ON 0xffff |
128 | #define BREAK_OFF 0x0000 | |
129 | ||
130 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
131 | #define GET_LINE_REQUEST 0x21 | |
132 | ||
133 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
134 | #define VENDOR_WRITE_REQUEST 0x01 | |
135 | ||
136 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
137 | #define VENDOR_READ_REQUEST 0x01 | |
138 | ||
139 | #define UART_STATE 0x08 | |
140 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
141 | #define UART_DCD 0x01 | |
142 | #define UART_DSR 0x02 | |
143 | #define UART_BREAK_ERROR 0x04 | |
144 | #define UART_RING 0x08 | |
145 | #define UART_FRAME_ERROR 0x10 | |
146 | #define UART_PARITY_ERROR 0x20 | |
147 | #define UART_OVERRUN_ERROR 0x40 | |
148 | #define UART_CTS 0x80 | |
149 | ||
1da177e4 LT |
150 | |
151 | enum pl2303_type { | |
152 | type_0, /* don't know the difference between type 0 and */ | |
153 | type_1, /* type 1, until someone from prolific tells us... */ | |
154 | HX, /* HX version of the pl2303 chip */ | |
155 | }; | |
156 | ||
157 | struct pl2303_private { | |
158 | spinlock_t lock; | |
159 | struct pl2303_buf *buf; | |
160 | int write_urb_in_use; | |
161 | wait_queue_head_t delta_msr_wait; | |
162 | u8 line_control; | |
163 | u8 line_status; | |
1da177e4 LT |
164 | enum pl2303_type type; |
165 | }; | |
166 | ||
572d3138 TG |
167 | /* |
168 | * pl2303_buf_alloc | |
169 | * | |
170 | * Allocate a circular buffer and all associated memory. | |
171 | */ | |
172 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) | |
173 | { | |
174 | struct pl2303_buf *pb; | |
175 | ||
176 | if (size == 0) | |
177 | return NULL; | |
178 | ||
5cbded58 | 179 | pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); |
572d3138 TG |
180 | if (pb == NULL) |
181 | return NULL; | |
182 | ||
183 | pb->buf_buf = kmalloc(size, GFP_KERNEL); | |
184 | if (pb->buf_buf == NULL) { | |
185 | kfree(pb); | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | pb->buf_size = size; | |
190 | pb->buf_get = pb->buf_put = pb->buf_buf; | |
191 | ||
192 | return pb; | |
193 | } | |
194 | ||
195 | /* | |
196 | * pl2303_buf_free | |
197 | * | |
198 | * Free the buffer and all associated memory. | |
199 | */ | |
200 | static void pl2303_buf_free(struct pl2303_buf *pb) | |
201 | { | |
202 | if (pb) { | |
203 | kfree(pb->buf_buf); | |
204 | kfree(pb); | |
205 | } | |
206 | } | |
207 | ||
208 | /* | |
209 | * pl2303_buf_clear | |
210 | * | |
211 | * Clear out all data in the circular buffer. | |
212 | */ | |
213 | static void pl2303_buf_clear(struct pl2303_buf *pb) | |
214 | { | |
215 | if (pb != NULL) | |
216 | pb->buf_get = pb->buf_put; | |
217 | /* equivalent to a get of all data available */ | |
218 | } | |
219 | ||
220 | /* | |
221 | * pl2303_buf_data_avail | |
222 | * | |
223 | * Return the number of bytes of data available in the circular | |
224 | * buffer. | |
225 | */ | |
226 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) | |
227 | { | |
228 | if (pb == NULL) | |
229 | return 0; | |
230 | ||
3a0f43e9 | 231 | return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; |
572d3138 TG |
232 | } |
233 | ||
234 | /* | |
235 | * pl2303_buf_space_avail | |
236 | * | |
237 | * Return the number of bytes of space available in the circular | |
238 | * buffer. | |
239 | */ | |
240 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) | |
241 | { | |
242 | if (pb == NULL) | |
243 | return 0; | |
244 | ||
3a0f43e9 | 245 | return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; |
572d3138 TG |
246 | } |
247 | ||
248 | /* | |
249 | * pl2303_buf_put | |
250 | * | |
251 | * Copy data data from a user buffer and put it into the circular buffer. | |
252 | * Restrict to the amount of space available. | |
253 | * | |
254 | * Return the number of bytes copied. | |
255 | */ | |
256 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, | |
257 | unsigned int count) | |
258 | { | |
259 | unsigned int len; | |
260 | ||
261 | if (pb == NULL) | |
262 | return 0; | |
263 | ||
264 | len = pl2303_buf_space_avail(pb); | |
265 | if (count > len) | |
266 | count = len; | |
267 | ||
268 | if (count == 0) | |
269 | return 0; | |
270 | ||
271 | len = pb->buf_buf + pb->buf_size - pb->buf_put; | |
272 | if (count > len) { | |
273 | memcpy(pb->buf_put, buf, len); | |
274 | memcpy(pb->buf_buf, buf+len, count - len); | |
275 | pb->buf_put = pb->buf_buf + count - len; | |
276 | } else { | |
277 | memcpy(pb->buf_put, buf, count); | |
278 | if (count < len) | |
279 | pb->buf_put += count; | |
280 | else /* count == len */ | |
281 | pb->buf_put = pb->buf_buf; | |
282 | } | |
283 | ||
284 | return count; | |
285 | } | |
286 | ||
287 | /* | |
288 | * pl2303_buf_get | |
289 | * | |
290 | * Get data from the circular buffer and copy to the given buffer. | |
291 | * Restrict to the amount of data available. | |
292 | * | |
293 | * Return the number of bytes copied. | |
294 | */ | |
295 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, | |
296 | unsigned int count) | |
297 | { | |
298 | unsigned int len; | |
299 | ||
300 | if (pb == NULL) | |
301 | return 0; | |
302 | ||
303 | len = pl2303_buf_data_avail(pb); | |
304 | if (count > len) | |
305 | count = len; | |
306 | ||
307 | if (count == 0) | |
308 | return 0; | |
309 | ||
310 | len = pb->buf_buf + pb->buf_size - pb->buf_get; | |
311 | if (count > len) { | |
312 | memcpy(buf, pb->buf_get, len); | |
313 | memcpy(buf+len, pb->buf_buf, count - len); | |
314 | pb->buf_get = pb->buf_buf + count - len; | |
315 | } else { | |
316 | memcpy(buf, pb->buf_get, count); | |
317 | if (count < len) | |
318 | pb->buf_get += count; | |
319 | else /* count == len */ | |
320 | pb->buf_get = pb->buf_buf; | |
321 | } | |
322 | ||
323 | return count; | |
324 | } | |
1da177e4 | 325 | |
eb44da0b SS |
326 | static int pl2303_vendor_read(__u16 value, __u16 index, |
327 | struct usb_serial *serial, unsigned char *buf) | |
328 | { | |
329 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
330 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
331 | value, index, buf, 1, 100); | |
332 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, | |
333 | VENDOR_READ_REQUEST, value, index, res, buf[0]); | |
334 | return res; | |
335 | } | |
336 | ||
337 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
338 | struct usb_serial *serial) | |
339 | { | |
340 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
341 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
342 | value, index, NULL, 0, 100); | |
343 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, | |
344 | VENDOR_WRITE_REQUEST, value, index, res); | |
345 | return res; | |
346 | } | |
347 | ||
372db8a7 | 348 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
349 | { |
350 | struct pl2303_private *priv; | |
351 | enum pl2303_type type = type_0; | |
3e152505 | 352 | unsigned char *buf; |
1da177e4 LT |
353 | int i; |
354 | ||
3e152505 SS |
355 | buf = kmalloc(10, GFP_KERNEL); |
356 | if (buf == NULL) | |
357 | return -ENOMEM; | |
358 | ||
1da177e4 LT |
359 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
360 | type = type_0; | |
361 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
362 | type = HX; | |
363 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
364 | type = type_1; | |
365 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
366 | type = type_1; | |
367 | dbg("device type: %d", type); | |
368 | ||
369 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 370 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
371 | if (!priv) |
372 | goto cleanup; | |
1da177e4 LT |
373 | spin_lock_init(&priv->lock); |
374 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); | |
375 | if (priv->buf == NULL) { | |
376 | kfree(priv); | |
377 | goto cleanup; | |
378 | } | |
379 | init_waitqueue_head(&priv->delta_msr_wait); | |
380 | priv->type = type; | |
381 | usb_set_serial_port_data(serial->port[i], priv); | |
382 | } | |
3e152505 SS |
383 | |
384 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
385 | pl2303_vendor_write(0x0404, 0, serial); | |
386 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
387 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
388 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
389 | pl2303_vendor_write(0x0404, 1, serial); | |
390 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
391 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
392 | pl2303_vendor_write(0, 1, serial); | |
393 | pl2303_vendor_write(1, 0, serial); | |
394 | if (type == HX) | |
395 | pl2303_vendor_write(2, 0x44, serial); | |
396 | else | |
397 | pl2303_vendor_write(2, 0x24, serial); | |
398 | ||
399 | kfree(buf); | |
1da177e4 LT |
400 | return 0; |
401 | ||
402 | cleanup: | |
3e152505 | 403 | kfree(buf); |
3a0f43e9 | 404 | for (--i; i >= 0; --i) { |
1da177e4 LT |
405 | priv = usb_get_serial_port_data(serial->port[i]); |
406 | pl2303_buf_free(priv->buf); | |
407 | kfree(priv); | |
408 | usb_set_serial_port_data(serial->port[i], NULL); | |
409 | } | |
410 | return -ENOMEM; | |
411 | } | |
412 | ||
372db8a7 | 413 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
414 | { |
415 | int retval; | |
3a0f43e9 | 416 | |
372db8a7 TG |
417 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
418 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
419 | value, 0, NULL, 0, 100); | |
441b62c1 | 420 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
1da177e4 LT |
421 | return retval; |
422 | } | |
423 | ||
1da177e4 LT |
424 | static void pl2303_send(struct usb_serial_port *port) |
425 | { | |
426 | int count, result; | |
427 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
428 | unsigned long flags; | |
429 | ||
441b62c1 | 430 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
431 | |
432 | spin_lock_irqsave(&priv->lock, flags); | |
433 | ||
434 | if (priv->write_urb_in_use) { | |
435 | spin_unlock_irqrestore(&priv->lock, flags); | |
436 | return; | |
437 | } | |
438 | ||
439 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, | |
372db8a7 | 440 | port->bulk_out_size); |
1da177e4 LT |
441 | |
442 | if (count == 0) { | |
443 | spin_unlock_irqrestore(&priv->lock, flags); | |
444 | return; | |
445 | } | |
446 | ||
447 | priv->write_urb_in_use = 1; | |
448 | ||
449 | spin_unlock_irqrestore(&priv->lock, flags); | |
450 | ||
441b62c1 | 451 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
372db8a7 | 452 | port->write_urb->transfer_buffer); |
1da177e4 LT |
453 | |
454 | port->write_urb->transfer_buffer_length = count; | |
372db8a7 | 455 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 456 | if (result) { |
372db8a7 | 457 | dev_err(&port->dev, "%s - failed submitting write urb," |
441b62c1 | 458 | " error %d\n", __func__, result); |
1da177e4 | 459 | priv->write_urb_in_use = 0; |
3a0f43e9 | 460 | /* TODO: reschedule pl2303_send */ |
1da177e4 LT |
461 | } |
462 | ||
cf2c7481 | 463 | usb_serial_port_softint(port); |
1da177e4 LT |
464 | } |
465 | ||
95da310e AC |
466 | static int pl2303_write(struct tty_struct *tty, struct usb_serial_port *port, |
467 | const unsigned char *buf, int count) | |
572d3138 TG |
468 | { |
469 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
470 | unsigned long flags; | |
471 | ||
441b62c1 | 472 | dbg("%s - port %d, %d bytes", __func__, port->number, count); |
572d3138 TG |
473 | |
474 | if (!count) | |
475 | return count; | |
476 | ||
477 | spin_lock_irqsave(&priv->lock, flags); | |
478 | count = pl2303_buf_put(priv->buf, buf, count); | |
479 | spin_unlock_irqrestore(&priv->lock, flags); | |
480 | ||
481 | pl2303_send(port); | |
482 | ||
483 | return count; | |
484 | } | |
485 | ||
95da310e | 486 | static int pl2303_write_room(struct tty_struct *tty) |
1da177e4 | 487 | { |
95da310e | 488 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
489 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
490 | int room = 0; | |
491 | unsigned long flags; | |
492 | ||
441b62c1 | 493 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
494 | |
495 | spin_lock_irqsave(&priv->lock, flags); | |
496 | room = pl2303_buf_space_avail(priv->buf); | |
497 | spin_unlock_irqrestore(&priv->lock, flags); | |
498 | ||
441b62c1 | 499 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
500 | return room; |
501 | } | |
502 | ||
95da310e | 503 | static int pl2303_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 504 | { |
95da310e | 505 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
506 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
507 | int chars = 0; | |
508 | unsigned long flags; | |
509 | ||
441b62c1 | 510 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
511 | |
512 | spin_lock_irqsave(&priv->lock, flags); | |
513 | chars = pl2303_buf_data_avail(priv->buf); | |
514 | spin_unlock_irqrestore(&priv->lock, flags); | |
515 | ||
441b62c1 | 516 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
517 | return chars; |
518 | } | |
519 | ||
95da310e AC |
520 | static void pl2303_set_termios(struct tty_struct *tty, |
521 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
522 | { |
523 | struct usb_serial *serial = port->serial; | |
524 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
525 | unsigned long flags; | |
526 | unsigned int cflag; | |
527 | unsigned char *buf; | |
528 | int baud; | |
529 | int i; | |
530 | u8 control; | |
25b82868 FS |
531 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
532 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
533 | 57600, 115200, 230400, 460800, 614400, | |
534 | 921600, 1228800, 2457600, 3000000, 6000000 }; | |
535 | int baud_floor, baud_ceil; | |
536 | int k; | |
1da177e4 | 537 | |
441b62c1 | 538 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 539 | |
bf5e5834 AC |
540 | /* The PL2303 is reported to lose bytes if you change |
541 | serial settings even to the same values as before. Thus | |
542 | we actually need to filter in this specific case */ | |
543 | ||
95da310e | 544 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
bf5e5834 AC |
545 | return; |
546 | ||
95da310e | 547 | cflag = tty->termios->c_cflag; |
1da177e4 | 548 | |
372db8a7 | 549 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 550 | if (!buf) { |
441b62c1 | 551 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
a5b6f60c | 552 | /* Report back no change occurred */ |
95da310e | 553 | *tty->termios = *old_termios; |
1da177e4 LT |
554 | return; |
555 | } | |
1da177e4 | 556 | |
372db8a7 TG |
557 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
558 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
559 | 0, 0, buf, 7, 100); | |
560 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
561 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
562 | |
563 | if (cflag & CSIZE) { | |
564 | switch (cflag & CSIZE) { | |
3a0f43e9 AC |
565 | case CS5: |
566 | buf[6] = 5; | |
567 | break; | |
568 | case CS6: | |
569 | buf[6] = 6; | |
570 | break; | |
571 | case CS7: | |
572 | buf[6] = 7; | |
573 | break; | |
574 | default: | |
575 | case CS8: | |
576 | buf[6] = 8; | |
577 | break; | |
1da177e4 | 578 | } |
441b62c1 | 579 | dbg("%s - data bits = %d", __func__, buf[6]); |
1da177e4 LT |
580 | } |
581 | ||
25b82868 FS |
582 | /* For reference buf[0]:buf[3] baud rate value */ |
583 | /* NOTE: Only the values defined in baud_sup are supported ! | |
584 | * => if unsupported values are set, the PL2303 seems to use | |
585 | * 9600 baud (at least my PL2303X always does) | |
586 | */ | |
95da310e | 587 | baud = tty_get_baud_rate(tty); |
25b82868 | 588 | dbg("%s - baud requested = %d", __func__, baud); |
1da177e4 | 589 | if (baud) { |
25b82868 FS |
590 | /* Set baudrate to nearest supported value */ |
591 | for (k=0; k<ARRAY_SIZE(baud_sup); k++) { | |
592 | if (baud_sup[k] / baud) { | |
593 | baud_ceil = baud_sup[k]; | |
594 | if (k==0) { | |
595 | baud = baud_ceil; | |
596 | } else { | |
597 | baud_floor = baud_sup[k-1]; | |
598 | if ((baud_ceil % baud) | |
599 | > (baud % baud_floor)) | |
600 | baud = baud_floor; | |
601 | else | |
602 | baud = baud_ceil; | |
603 | } | |
604 | break; | |
605 | } | |
606 | } | |
607 | if (baud > 1228800) { | |
608 | /* type_0, type_1 only support up to 1228800 baud */ | |
609 | if (priv->type != HX) | |
610 | baud = 1228800; | |
611 | else if (baud > 6000000) | |
612 | baud = 6000000; | |
613 | } | |
614 | dbg("%s - baud set = %d", __func__, baud); | |
1da177e4 LT |
615 | buf[0] = baud & 0xff; |
616 | buf[1] = (baud >> 8) & 0xff; | |
617 | buf[2] = (baud >> 16) & 0xff; | |
618 | buf[3] = (baud >> 24) & 0xff; | |
619 | } | |
620 | ||
621 | /* For reference buf[4]=0 is 1 stop bits */ | |
622 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
623 | /* For reference buf[4]=2 is 2 stop bits */ | |
624 | if (cflag & CSTOPB) { | |
29cf1b72 FS |
625 | /* NOTE: Comply with "real" UARTs / RS232: |
626 | * use 1.5 instead of 2 stop bits with 5 data bits | |
627 | */ | |
628 | if ((cflag & CSIZE) == CS5) { | |
629 | buf[4] = 1; | |
630 | dbg("%s - stop bits = 1.5", __func__); | |
631 | } else { | |
632 | buf[4] = 2; | |
633 | dbg("%s - stop bits = 2", __func__); | |
634 | } | |
1da177e4 LT |
635 | } else { |
636 | buf[4] = 0; | |
441b62c1 | 637 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
638 | } |
639 | ||
640 | if (cflag & PARENB) { | |
641 | /* For reference buf[5]=0 is none parity */ | |
642 | /* For reference buf[5]=1 is odd parity */ | |
643 | /* For reference buf[5]=2 is even parity */ | |
644 | /* For reference buf[5]=3 is mark parity */ | |
645 | /* For reference buf[5]=4 is space parity */ | |
646 | if (cflag & PARODD) { | |
6dd81b45 FS |
647 | if (cflag & CMSPAR) { |
648 | buf[5] = 3; | |
649 | dbg("%s - parity = mark", __func__); | |
650 | } else { | |
651 | buf[5] = 1; | |
652 | dbg("%s - parity = odd", __func__); | |
653 | } | |
1da177e4 | 654 | } else { |
6dd81b45 FS |
655 | if (cflag & CMSPAR) { |
656 | buf[5] = 4; | |
657 | dbg("%s - parity = space", __func__); | |
658 | } else { | |
659 | buf[5] = 2; | |
660 | dbg("%s - parity = even", __func__); | |
661 | } | |
1da177e4 LT |
662 | } |
663 | } else { | |
664 | buf[5] = 0; | |
441b62c1 | 665 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
666 | } |
667 | ||
372db8a7 TG |
668 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
669 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
670 | 0, 0, buf, 7, 100); | |
671 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
672 | |
673 | /* change control lines if we are switching to or from B0 */ | |
674 | spin_lock_irqsave(&priv->lock, flags); | |
675 | control = priv->line_control; | |
676 | if ((cflag & CBAUD) == B0) | |
677 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
678 | else | |
679 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
680 | if (control != priv->line_control) { | |
681 | control = priv->line_control; | |
682 | spin_unlock_irqrestore(&priv->lock, flags); | |
683 | set_control_lines(serial->dev, control); | |
684 | } else { | |
685 | spin_unlock_irqrestore(&priv->lock, flags); | |
686 | } | |
372db8a7 | 687 | |
1da177e4 LT |
688 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
689 | ||
372db8a7 TG |
690 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
691 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
692 | 0, 0, buf, 7, 100); | |
693 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
694 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
695 | ||
696 | if (cflag & CRTSCTS) { | |
1da177e4 | 697 | if (priv->type == HX) |
eb44da0b | 698 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 699 | else |
eb44da0b | 700 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 701 | } else { |
eb44da0b | 702 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 703 | } |
572d3138 | 704 | |
25b82868 | 705 | /* Save resulting baud rate */ |
df64c471 | 706 | if (baud) |
95da310e | 707 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 708 | |
572d3138 TG |
709 | kfree(buf); |
710 | } | |
711 | ||
335f8514 AC |
712 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
713 | { | |
714 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
715 | unsigned long flags; | |
716 | u8 control; | |
717 | ||
718 | spin_lock_irqsave(&priv->lock, flags); | |
719 | /* Change DTR and RTS */ | |
720 | if (on) | |
721 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
722 | else | |
723 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
724 | control = priv->line_control; | |
725 | spin_unlock_irqrestore(&priv->lock, flags); | |
726 | set_control_lines(port->serial->dev, control); | |
727 | } | |
728 | ||
729 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 TG |
730 | { |
731 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
732 | unsigned long flags; | |
572d3138 | 733 | |
441b62c1 | 734 | dbg("%s - port %d", __func__, port->number); |
572d3138 | 735 | |
572d3138 | 736 | spin_lock_irqsave(&priv->lock, flags); |
572d3138 TG |
737 | /* clear out any remaining data in the buffer */ |
738 | pl2303_buf_clear(priv->buf); | |
739 | spin_unlock_irqrestore(&priv->lock, flags); | |
740 | ||
572d3138 | 741 | /* shutdown our urbs */ |
441b62c1 | 742 | dbg("%s - shutting down urbs", __func__); |
572d3138 TG |
743 | usb_kill_urb(port->write_urb); |
744 | usb_kill_urb(port->read_urb); | |
745 | usb_kill_urb(port->interrupt_in_urb); | |
746 | ||
1da177e4 LT |
747 | } |
748 | ||
a509a7e4 | 749 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 750 | { |
606d099c | 751 | struct ktermios tmp_termios; |
1da177e4 LT |
752 | struct usb_serial *serial = port->serial; |
753 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1da177e4 LT |
754 | int result; |
755 | ||
441b62c1 | 756 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 757 | |
1694899f D |
758 | if (priv->type != HX) { |
759 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
760 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 761 | } else { |
1da177e4 | 762 | /* reset upstream data pipes */ |
eb44da0b SS |
763 | pl2303_vendor_write(8, 0, serial); |
764 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
765 | } |
766 | ||
1da177e4 | 767 | /* Setup termios */ |
95da310e AC |
768 | if (tty) |
769 | pl2303_set_termios(tty, port, &tmp_termios); | |
1da177e4 | 770 | |
441b62c1 | 771 | dbg("%s - submitting read urb", __func__); |
372db8a7 | 772 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
1da177e4 | 773 | if (result) { |
372db8a7 | 774 | dev_err(&port->dev, "%s - failed submitting read urb," |
441b62c1 | 775 | " error %d\n", __func__, result); |
335f8514 | 776 | pl2303_close(port); |
1da177e4 LT |
777 | return -EPROTO; |
778 | } | |
779 | ||
441b62c1 | 780 | dbg("%s - submitting interrupt urb", __func__); |
372db8a7 | 781 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 782 | if (result) { |
372db8a7 | 783 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 784 | " error %d\n", __func__, result); |
335f8514 | 785 | pl2303_close(port); |
1da177e4 LT |
786 | return -EPROTO; |
787 | } | |
335f8514 | 788 | port->port.drain_delay = 256; |
1da177e4 LT |
789 | return 0; |
790 | } | |
791 | ||
95da310e | 792 | static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, |
372db8a7 | 793 | unsigned int set, unsigned int clear) |
1da177e4 | 794 | { |
95da310e | 795 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
796 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
797 | unsigned long flags; | |
798 | u8 control; | |
799 | ||
6fdd8e8e FL |
800 | if (!usb_get_intfdata(port->serial->interface)) |
801 | return -ENODEV; | |
802 | ||
372db8a7 | 803 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
804 | if (set & TIOCM_RTS) |
805 | priv->line_control |= CONTROL_RTS; | |
806 | if (set & TIOCM_DTR) | |
807 | priv->line_control |= CONTROL_DTR; | |
808 | if (clear & TIOCM_RTS) | |
809 | priv->line_control &= ~CONTROL_RTS; | |
810 | if (clear & TIOCM_DTR) | |
811 | priv->line_control &= ~CONTROL_DTR; | |
812 | control = priv->line_control; | |
372db8a7 | 813 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 814 | |
372db8a7 | 815 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
816 | } |
817 | ||
95da310e | 818 | static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 819 | { |
95da310e | 820 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
821 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
822 | unsigned long flags; | |
823 | unsigned int mcr; | |
824 | unsigned int status; | |
825 | unsigned int result; | |
826 | ||
441b62c1 | 827 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 828 | |
6fdd8e8e FL |
829 | if (!usb_get_intfdata(port->serial->interface)) |
830 | return -ENODEV; | |
831 | ||
372db8a7 | 832 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
833 | mcr = priv->line_control; |
834 | status = priv->line_status; | |
372db8a7 | 835 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
836 | |
837 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
838 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
839 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
840 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
841 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
842 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
843 | ||
441b62c1 | 844 | dbg("%s - result = %x", __func__, result); |
1da177e4 LT |
845 | |
846 | return result; | |
847 | } | |
848 | ||
335f8514 AC |
849 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
850 | { | |
851 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
852 | if (priv->line_status & UART_DCD) | |
853 | return 1; | |
854 | return 0; | |
855 | } | |
856 | ||
1da177e4 LT |
857 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) |
858 | { | |
859 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
860 | unsigned long flags; | |
861 | unsigned int prevstatus; | |
862 | unsigned int status; | |
863 | unsigned int changed; | |
864 | ||
372db8a7 | 865 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 866 | prevstatus = priv->line_status; |
372db8a7 | 867 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
868 | |
869 | while (1) { | |
870 | interruptible_sleep_on(&priv->delta_msr_wait); | |
871 | /* see if a signal did it */ | |
872 | if (signal_pending(current)) | |
873 | return -ERESTARTSYS; | |
372db8a7 TG |
874 | |
875 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 876 | status = priv->line_status; |
372db8a7 TG |
877 | spin_unlock_irqrestore(&priv->lock, flags); |
878 | ||
3a0f43e9 | 879 | changed = prevstatus ^ status; |
372db8a7 | 880 | |
1da177e4 LT |
881 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
882 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
883 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 884 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
885 | return 0; |
886 | } | |
887 | prevstatus = status; | |
888 | } | |
889 | /* NOTREACHED */ | |
890 | return 0; | |
891 | } | |
892 | ||
95da310e | 893 | static int pl2303_ioctl(struct tty_struct *tty, struct file *file, |
372db8a7 | 894 | unsigned int cmd, unsigned long arg) |
1da177e4 | 895 | { |
67b9946d | 896 | struct serial_struct ser; |
95da310e | 897 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 898 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
1da177e4 LT |
899 | |
900 | switch (cmd) { | |
67b9946d JT |
901 | case TIOCGSERIAL: |
902 | memset(&ser, 0, sizeof ser); | |
903 | ser.type = PORT_16654; | |
904 | ser.line = port->serial->minor; | |
905 | ser.port = port->number; | |
906 | ser.baud_base = 460800; | |
907 | ||
908 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
909 | return -EFAULT; | |
910 | ||
911 | return 0; | |
912 | ||
3a0f43e9 AC |
913 | case TIOCMIWAIT: |
914 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
915 | return wait_modem_info(port, arg); | |
916 | default: | |
917 | dbg("%s not supported = 0x%04x", __func__, cmd); | |
918 | break; | |
1da177e4 | 919 | } |
1da177e4 LT |
920 | return -ENOIOCTLCMD; |
921 | } | |
922 | ||
95da310e | 923 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 924 | { |
95da310e | 925 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
926 | struct usb_serial *serial = port->serial; |
927 | u16 state; | |
928 | int result; | |
929 | ||
441b62c1 | 930 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
931 | |
932 | if (break_state == 0) | |
933 | state = BREAK_OFF; | |
934 | else | |
935 | state = BREAK_ON; | |
3a0f43e9 AC |
936 | dbg("%s - turning break %s", __func__, |
937 | state == BREAK_OFF ? "off" : "on"); | |
1da177e4 | 938 | |
372db8a7 TG |
939 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
940 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
941 | 0, NULL, 0, 100); | |
1da177e4 | 942 | if (result) |
441b62c1 | 943 | dbg("%s - error sending break = %d", __func__, result); |
1da177e4 LT |
944 | } |
945 | ||
f9c99bb8 | 946 | static void pl2303_release(struct usb_serial *serial) |
1da177e4 LT |
947 | { |
948 | int i; | |
949 | struct pl2303_private *priv; | |
950 | ||
441b62c1 | 951 | dbg("%s", __func__); |
1da177e4 LT |
952 | |
953 | for (i = 0; i < serial->num_ports; ++i) { | |
954 | priv = usb_get_serial_port_data(serial->port[i]); | |
955 | if (priv) { | |
956 | pl2303_buf_free(priv->buf); | |
957 | kfree(priv); | |
1da177e4 | 958 | } |
372db8a7 | 959 | } |
1da177e4 LT |
960 | } |
961 | ||
97bb13ec FL |
962 | static void pl2303_update_line_status(struct usb_serial_port *port, |
963 | unsigned char *data, | |
964 | unsigned int actual_length) | |
965 | { | |
966 | ||
967 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
968 | unsigned long flags; | |
969 | u8 status_idx = UART_STATE; | |
95f209f9 | 970 | u8 length = UART_STATE + 1; |
9c537616 | 971 | u16 idv, idp; |
97bb13ec | 972 | |
9c537616 TG |
973 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
974 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
975 | ||
976 | ||
977 | if (idv == SIEMENS_VENDOR_ID) { | |
978 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
979 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
980 | idp == SIEMENS_PRODUCT_ID_X75) { | |
981 | ||
982 | length = 1; | |
983 | status_idx = 0; | |
984 | } | |
97bb13ec FL |
985 | } |
986 | ||
987 | if (actual_length < length) | |
a009b75a | 988 | return; |
97bb13ec | 989 | |
3a0f43e9 | 990 | /* Save off the uart status for others to look at */ |
97bb13ec FL |
991 | spin_lock_irqsave(&priv->lock, flags); |
992 | priv->line_status = data[status_idx]; | |
993 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
994 | if (priv->line_status & UART_BREAK_ERROR) |
995 | usb_serial_handle_break(port); | |
372db8a7 | 996 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 997 | } |
1da177e4 | 998 | |
7d12e780 | 999 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 1000 | { |
cdc97792 | 1001 | struct usb_serial_port *port = urb->context; |
1da177e4 | 1002 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 1003 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
1004 | int status = urb->status; |
1005 | int retval; | |
1da177e4 | 1006 | |
441b62c1 | 1007 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 1008 | |
461d696a | 1009 | switch (status) { |
1da177e4 LT |
1010 | case 0: |
1011 | /* success */ | |
1012 | break; | |
1013 | case -ECONNRESET: | |
1014 | case -ENOENT: | |
1015 | case -ESHUTDOWN: | |
1016 | /* this urb is terminated, clean up */ | |
441b62c1 | 1017 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 1018 | status); |
1da177e4 LT |
1019 | return; |
1020 | default: | |
441b62c1 | 1021 | dbg("%s - nonzero urb status received: %d", __func__, |
461d696a | 1022 | status); |
1da177e4 LT |
1023 | goto exit; |
1024 | } | |
1025 | ||
441b62c1 | 1026 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 TG |
1027 | urb->actual_length, urb->transfer_buffer); |
1028 | ||
97bb13ec | 1029 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 1030 | |
1da177e4 | 1031 | exit: |
461d696a GKH |
1032 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1033 | if (retval) | |
372db8a7 TG |
1034 | dev_err(&urb->dev->dev, |
1035 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 1036 | __func__, retval); |
1da177e4 LT |
1037 | } |
1038 | ||
d4fc4a7b AC |
1039 | static void pl2303_push_data(struct tty_struct *tty, |
1040 | struct usb_serial_port *port, struct urb *urb, | |
1041 | u8 line_status) | |
1042 | { | |
1043 | unsigned char *data = urb->transfer_buffer; | |
1044 | /* get tty_flag from status */ | |
1045 | char tty_flag = TTY_NORMAL; | |
1046 | /* break takes precedence over parity, */ | |
1047 | /* which takes precedence over framing errors */ | |
1048 | if (line_status & UART_BREAK_ERROR) | |
1049 | tty_flag = TTY_BREAK; | |
1050 | else if (line_status & UART_PARITY_ERROR) | |
1051 | tty_flag = TTY_PARITY; | |
1052 | else if (line_status & UART_FRAME_ERROR) | |
1053 | tty_flag = TTY_FRAME; | |
1054 | dbg("%s - tty_flag = %d", __func__, tty_flag); | |
1055 | ||
d4fc4a7b AC |
1056 | /* overrun is special, not associated with a char */ |
1057 | if (line_status & UART_OVERRUN_ERROR) | |
1058 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
9388e2e7 JH |
1059 | |
1060 | if (tty_flag == TTY_NORMAL && !(port->console && port->sysrq)) | |
1061 | tty_insert_flip_string(tty, data, urb->actual_length); | |
1062 | else { | |
d4fc4a7b AC |
1063 | int i; |
1064 | for (i = 0; i < urb->actual_length; ++i) | |
1065 | if (!usb_serial_handle_sysrq_char(tty, port, data[i])) | |
1066 | tty_insert_flip_char(tty, data[i], tty_flag); | |
9388e2e7 | 1067 | } |
d4fc4a7b AC |
1068 | tty_flip_buffer_push(tty); |
1069 | } | |
1070 | ||
7d12e780 | 1071 | static void pl2303_read_bulk_callback(struct urb *urb) |
1da177e4 | 1072 | { |
cdc97792 | 1073 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1074 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
1075 | struct tty_struct *tty; | |
1da177e4 | 1076 | unsigned long flags; |
1da177e4 | 1077 | int result; |
461d696a GKH |
1078 | int status = urb->status; |
1079 | u8 line_status; | |
1da177e4 | 1080 | |
441b62c1 | 1081 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1082 | |
461d696a | 1083 | if (status) { |
441b62c1 | 1084 | dbg("%s - urb status = %d", __func__, status); |
461d696a | 1085 | if (status == -EPROTO) { |
372db8a7 TG |
1086 | /* PL2303 mysteriously fails with -EPROTO reschedule |
1087 | * the read */ | |
1088 | dbg("%s - caught -EPROTO, resubmitting the urb", | |
441b62c1 | 1089 | __func__); |
1da177e4 LT |
1090 | result = usb_submit_urb(urb, GFP_ATOMIC); |
1091 | if (result) | |
372db8a7 TG |
1092 | dev_err(&urb->dev->dev, "%s - failed" |
1093 | " resubmitting read urb, error %d\n", | |
441b62c1 | 1094 | __func__, result); |
1da177e4 LT |
1095 | return; |
1096 | } | |
441b62c1 | 1097 | dbg("%s - unable to handle the error, exiting.", __func__); |
1da177e4 LT |
1098 | return; |
1099 | } | |
1100 | ||
441b62c1 | 1101 | usb_serial_debug_data(debug, &port->dev, __func__, |
d4fc4a7b | 1102 | urb->actual_length, urb->transfer_buffer); |
1da177e4 LT |
1103 | |
1104 | spin_lock_irqsave(&priv->lock, flags); | |
461d696a | 1105 | line_status = priv->line_status; |
1da177e4 LT |
1106 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
1107 | spin_unlock_irqrestore(&priv->lock, flags); | |
372db8a7 | 1108 | wake_up_interruptible(&priv->delta_msr_wait); |
1da177e4 | 1109 | |
4a90f09b | 1110 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 1111 | if (tty && urb->actual_length) { |
d4fc4a7b | 1112 | pl2303_push_data(tty, port, urb, line_status); |
1da177e4 | 1113 | } |
4a90f09b | 1114 | tty_kref_put(tty); |
1da177e4 | 1115 | /* Schedule the next read _if_ we are still open */ |
1f87158e AS |
1116 | result = usb_submit_urb(urb, GFP_ATOMIC); |
1117 | if (result && result != -EPERM) | |
1118 | dev_err(&urb->dev->dev, "%s - failed resubmitting" | |
1119 | " read urb, error %d\n", __func__, result); | |
1da177e4 LT |
1120 | } |
1121 | ||
7d12e780 | 1122 | static void pl2303_write_bulk_callback(struct urb *urb) |
1da177e4 | 1123 | { |
cdc97792 | 1124 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1125 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
1126 | int result; | |
461d696a | 1127 | int status = urb->status; |
1da177e4 | 1128 | |
441b62c1 | 1129 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1130 | |
461d696a | 1131 | switch (status) { |
1da177e4 LT |
1132 | case 0: |
1133 | /* success */ | |
1134 | break; | |
1135 | case -ECONNRESET: | |
1136 | case -ENOENT: | |
1137 | case -ESHUTDOWN: | |
1138 | /* this urb is terminated, clean up */ | |
441b62c1 | 1139 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 1140 | status); |
1da177e4 LT |
1141 | priv->write_urb_in_use = 0; |
1142 | return; | |
1143 | default: | |
1144 | /* error in the urb, so we have to resubmit it */ | |
441b62c1 HH |
1145 | dbg("%s - Overflow in write", __func__); |
1146 | dbg("%s - nonzero write bulk status received: %d", __func__, | |
461d696a | 1147 | status); |
1da177e4 | 1148 | port->write_urb->transfer_buffer_length = 1; |
372db8a7 | 1149 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
1da177e4 | 1150 | if (result) |
372db8a7 | 1151 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
441b62c1 | 1152 | " urb, error %d\n", __func__, result); |
1da177e4 LT |
1153 | else |
1154 | return; | |
1155 | } | |
1156 | ||
1157 | priv->write_urb_in_use = 0; | |
1158 | ||
1159 | /* send any buffered data */ | |
1160 | pl2303_send(port); | |
1161 | } | |
1162 | ||
572d3138 TG |
1163 | /* All of the device info needed for the PL2303 SIO serial converter */ |
1164 | static struct usb_serial_driver pl2303_device = { | |
1165 | .driver = { | |
1166 | .owner = THIS_MODULE, | |
1167 | .name = "pl2303", | |
1168 | }, | |
1169 | .id_table = id_table, | |
d9b1b787 | 1170 | .usb_driver = &pl2303_driver, |
572d3138 TG |
1171 | .num_ports = 1, |
1172 | .open = pl2303_open, | |
1173 | .close = pl2303_close, | |
335f8514 AC |
1174 | .dtr_rts = pl2303_dtr_rts, |
1175 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
1176 | .write = pl2303_write, |
1177 | .ioctl = pl2303_ioctl, | |
1178 | .break_ctl = pl2303_break_ctl, | |
1179 | .set_termios = pl2303_set_termios, | |
1180 | .tiocmget = pl2303_tiocmget, | |
1181 | .tiocmset = pl2303_tiocmset, | |
1182 | .read_bulk_callback = pl2303_read_bulk_callback, | |
1183 | .read_int_callback = pl2303_read_int_callback, | |
1184 | .write_bulk_callback = pl2303_write_bulk_callback, | |
1185 | .write_room = pl2303_write_room, | |
1186 | .chars_in_buffer = pl2303_chars_in_buffer, | |
1187 | .attach = pl2303_startup, | |
f9c99bb8 | 1188 | .release = pl2303_release, |
572d3138 | 1189 | }; |
1da177e4 | 1190 | |
372db8a7 | 1191 | static int __init pl2303_init(void) |
1da177e4 LT |
1192 | { |
1193 | int retval; | |
372db8a7 | 1194 | |
1da177e4 LT |
1195 | retval = usb_serial_register(&pl2303_device); |
1196 | if (retval) | |
1197 | goto failed_usb_serial_register; | |
1198 | retval = usb_register(&pl2303_driver); | |
1199 | if (retval) | |
1200 | goto failed_usb_register; | |
c197a8db | 1201 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1202 | return 0; |
1203 | failed_usb_register: | |
1204 | usb_serial_deregister(&pl2303_device); | |
1205 | failed_usb_serial_register: | |
1206 | return retval; | |
1207 | } | |
1208 | ||
372db8a7 | 1209 | static void __exit pl2303_exit(void) |
1da177e4 | 1210 | { |
372db8a7 TG |
1211 | usb_deregister(&pl2303_driver); |
1212 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
1213 | } |
1214 | ||
1da177e4 LT |
1215 | module_init(pl2303_init); |
1216 | module_exit(pl2303_exit); | |
1217 | ||
1218 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1219 | MODULE_LICENSE("GPL"); |
1220 | ||
1221 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1222 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1223 |