Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Prolific PL2303 USB to serial adaptor driver | |
3 | * | |
4d0dce3e | 4 | * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) |
1da177e4 LT |
5 | * Copyright (C) 2003 IBM Corp. |
6 | * | |
57ce61aa FS |
7 | * Copyright (C) 2009, 2013 Frank Schäfer <fschaefer.oss@googlemail.com> |
8 | * - fixes, improvements and documentation for the baud rate encoding methods | |
9 | * Copyright (C) 2013 Reinhard Max <max@suse.de> | |
10 | * - fixes and improvements for the divisor based baud rate encoding method | |
11 | * | |
1da177e4 LT |
12 | * Original driver for 2.2.x by anonymous |
13 | * | |
4d0dce3e GKH |
14 | * This program is free software; you can redistribute it and/or |
15 | * modify it under the terms of the GNU General Public License version | |
16 | * 2 as published by the Free Software Foundation. | |
1da177e4 | 17 | * |
3a0f43e9 AC |
18 | * See Documentation/usb/usb-serial.txt for more information on using this |
19 | * driver | |
1da177e4 | 20 | * |
1da177e4 LT |
21 | */ |
22 | ||
1da177e4 LT |
23 | #include <linux/kernel.h> |
24 | #include <linux/errno.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/tty.h> | |
28 | #include <linux/tty_driver.h> | |
29 | #include <linux/tty_flip.h> | |
30 | #include <linux/serial.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/moduleparam.h> | |
33 | #include <linux/spinlock.h> | |
3a0f43e9 | 34 | #include <linux/uaccess.h> |
1da177e4 | 35 | #include <linux/usb.h> |
a969888c | 36 | #include <linux/usb/serial.h> |
b2d6d98f | 37 | #include <asm/unaligned.h> |
1da177e4 LT |
38 | #include "pl2303.h" |
39 | ||
40 | /* | |
41 | * Version Information | |
42 | */ | |
1da177e4 LT |
43 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
44 | ||
7d40d7e8 | 45 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
49 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
50 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 51 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 52 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 53 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
18344a1c | 54 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
96a3e79e | 55 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
1da177e4 | 56 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 57 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
58 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
59 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
60 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
61 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
62 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 63 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
64 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
65 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
66 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
67 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
68 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
69 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
70 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
71 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 72 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 73 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 74 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 75 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 76 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 77 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
78 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
79 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 80 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 81 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 82 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 83 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 84 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 85 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 86 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 87 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 88 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 89 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 90 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 91 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 92 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 93 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 94 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 95 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
598f0b70 | 96 | { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, |
1da177e4 LT |
97 | { } /* Terminating entry */ |
98 | }; | |
99 | ||
372db8a7 | 100 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 101 | |
1da177e4 LT |
102 | #define SET_LINE_REQUEST_TYPE 0x21 |
103 | #define SET_LINE_REQUEST 0x20 | |
104 | ||
105 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
106 | #define SET_CONTROL_REQUEST 0x22 | |
107 | #define CONTROL_DTR 0x01 | |
108 | #define CONTROL_RTS 0x02 | |
109 | ||
110 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 111 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
112 | #define BREAK_ON 0xffff |
113 | #define BREAK_OFF 0x0000 | |
114 | ||
115 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
116 | #define GET_LINE_REQUEST 0x21 | |
117 | ||
118 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
119 | #define VENDOR_WRITE_REQUEST 0x01 | |
120 | ||
121 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
122 | #define VENDOR_READ_REQUEST 0x01 | |
123 | ||
124 | #define UART_STATE 0x08 | |
125 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
126 | #define UART_DCD 0x01 | |
127 | #define UART_DSR 0x02 | |
128 | #define UART_BREAK_ERROR 0x04 | |
129 | #define UART_RING 0x08 | |
130 | #define UART_FRAME_ERROR 0x10 | |
131 | #define UART_PARITY_ERROR 0x20 | |
132 | #define UART_OVERRUN_ERROR 0x40 | |
133 | #define UART_CTS 0x80 | |
134 | ||
1da177e4 LT |
135 | |
136 | enum pl2303_type { | |
e8bbd5c4 GKH |
137 | type_0, /* don't know the difference between type 0 and */ |
138 | type_1, /* type 1, until someone from prolific tells us... */ | |
139 | HX, /* HX version of the pl2303 chip */ | |
1da177e4 LT |
140 | }; |
141 | ||
8bf769eb JH |
142 | struct pl2303_serial_private { |
143 | enum pl2303_type type; | |
144 | }; | |
145 | ||
1da177e4 LT |
146 | struct pl2303_private { |
147 | spinlock_t lock; | |
1da177e4 LT |
148 | u8 line_control; |
149 | u8 line_status; | |
1da177e4 LT |
150 | }; |
151 | ||
eb44da0b SS |
152 | static int pl2303_vendor_read(__u16 value, __u16 index, |
153 | struct usb_serial *serial, unsigned char *buf) | |
154 | { | |
155 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
156 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
157 | value, index, buf, 1, 100); | |
7b5789a8 | 158 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", |
d8789b2b GKH |
159 | VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index, |
160 | res, buf[0]); | |
eb44da0b SS |
161 | return res; |
162 | } | |
163 | ||
164 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
165 | struct usb_serial *serial) | |
166 | { | |
167 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
168 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
169 | value, index, NULL, 0, 100); | |
7b5789a8 | 170 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n", |
d8789b2b GKH |
171 | VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index, |
172 | res); | |
eb44da0b SS |
173 | return res; |
174 | } | |
175 | ||
372db8a7 | 176 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 177 | { |
8bf769eb | 178 | struct pl2303_serial_private *spriv; |
1da177e4 | 179 | enum pl2303_type type = type_0; |
3e152505 | 180 | unsigned char *buf; |
8bf769eb JH |
181 | |
182 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
183 | if (!spriv) | |
184 | return -ENOMEM; | |
1da177e4 | 185 | |
3e152505 | 186 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
187 | if (!buf) { |
188 | kfree(spriv); | |
3e152505 | 189 | return -ENOMEM; |
8bf769eb | 190 | } |
3e152505 | 191 | |
b52e1113 | 192 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
1da177e4 | 193 | type = type_0; |
b52e1113 | 194 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) |
e8bbd5c4 | 195 | type = HX; |
281393ad GKH |
196 | else if (serial->dev->descriptor.bDeviceClass == 0x00) |
197 | type = type_1; | |
198 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
1da177e4 | 199 | type = type_1; |
b52e1113 | 200 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
1da177e4 | 201 | |
8bf769eb JH |
202 | spriv->type = type; |
203 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
204 | |
205 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
206 | pl2303_vendor_write(0x0404, 0, serial); | |
207 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
208 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
209 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
210 | pl2303_vendor_write(0x0404, 1, serial); | |
211 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
212 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
213 | pl2303_vendor_write(0, 1, serial); | |
214 | pl2303_vendor_write(1, 0, serial); | |
e8bbd5c4 | 215 | if (type == HX) |
034d1527 | 216 | pl2303_vendor_write(2, 0x44, serial); |
e8bbd5c4 GKH |
217 | else |
218 | pl2303_vendor_write(2, 0x24, serial); | |
3e152505 SS |
219 | |
220 | kfree(buf); | |
1da177e4 | 221 | return 0; |
8bf769eb | 222 | } |
1da177e4 | 223 | |
8bf769eb JH |
224 | static void pl2303_release(struct usb_serial *serial) |
225 | { | |
226 | struct pl2303_serial_private *spriv; | |
227 | ||
228 | spriv = usb_get_serial_data(serial); | |
229 | kfree(spriv); | |
230 | } | |
231 | ||
232 | static int pl2303_port_probe(struct usb_serial_port *port) | |
233 | { | |
234 | struct pl2303_private *priv; | |
235 | ||
236 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
237 | if (!priv) | |
238 | return -ENOMEM; | |
239 | ||
240 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
241 | |
242 | usb_set_serial_port_data(port, priv); | |
243 | ||
d7be6221 JH |
244 | port->port.drain_delay = 256; |
245 | ||
8bf769eb JH |
246 | return 0; |
247 | } | |
248 | ||
249 | static int pl2303_port_remove(struct usb_serial_port *port) | |
250 | { | |
251 | struct pl2303_private *priv; | |
252 | ||
253 | priv = usb_get_serial_port_data(port); | |
254 | kfree(priv); | |
255 | ||
256 | return 0; | |
1da177e4 LT |
257 | } |
258 | ||
f45d0a5a | 259 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 260 | { |
f45d0a5a | 261 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 262 | int retval; |
3a0f43e9 | 263 | |
372db8a7 TG |
264 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
265 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
266 | value, 0, NULL, 0, 100); | |
f45d0a5a | 267 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 268 | value, retval); |
1da177e4 LT |
269 | return retval; |
270 | } | |
271 | ||
e917ba01 FS |
272 | static int pl2303_baudrate_encode_direct(int baud, enum pl2303_type type, |
273 | u8 buf[4]) | |
274 | { | |
275 | /* | |
276 | * NOTE: Only the values defined in baud_sup are supported ! | |
09169197 GKH |
277 | * => if unsupported values are set, the PL2303 seems to |
278 | * use 9600 baud (at least my PL2303X always does) | |
e917ba01 FS |
279 | */ |
280 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, | |
281 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
282 | 57600, 115200, 230400, 460800, 614400, 921600, | |
e8bbd5c4 | 283 | 1228800, 2457600, 3000000, 6000000 }; |
e917ba01 FS |
284 | int i; |
285 | ||
286 | /* Set baudrate to nearest supported value */ | |
287 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { | |
288 | if (baud_sup[i] > baud) | |
289 | break; | |
290 | } | |
291 | if (i == ARRAY_SIZE(baud_sup)) | |
292 | baud = baud_sup[i - 1]; | |
293 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
294 | baud = baud_sup[i - 1]; | |
295 | else | |
296 | baud = baud_sup[i]; | |
e8bbd5c4 GKH |
297 | /* type_0, type_1 only support up to 1228800 baud */ |
298 | if (type != HX) | |
e917ba01 FS |
299 | baud = min_t(int, baud, 1228800); |
300 | /* Direct (standard) baud rate encoding method */ | |
301 | put_unaligned_le32(baud, buf); | |
302 | ||
303 | return baud; | |
304 | } | |
305 | ||
306 | static int pl2303_baudrate_encode_divisor(int baud, enum pl2303_type type, | |
307 | u8 buf[4]) | |
308 | { | |
309 | /* | |
310 | * Divisor based baud rate encoding method | |
311 | * | |
09169197 | 312 | * NOTE: it's not clear if the type_0/1 chips support this method |
e917ba01 FS |
313 | * |
314 | * divisor = 12MHz * 32 / baudrate = 2^A * B | |
315 | * | |
316 | * with | |
317 | * | |
318 | * A = buf[1] & 0x0e | |
319 | * B = buf[0] + (buf[1] & 0x01) << 8 | |
320 | * | |
321 | * Special cases: | |
322 | * => 8 < B < 16: device seems to work not properly | |
323 | * => B <= 8: device uses the max. value B = 512 instead | |
324 | */ | |
325 | unsigned int A, B; | |
326 | ||
b5c16c6a FS |
327 | /* |
328 | * NOTE: The Windows driver allows maximum baud rates of 110% of the | |
329 | * specified maximium value. | |
330 | * Quick tests with early (2004) HX (rev. A) chips suggest, that even | |
331 | * higher baud rates (up to the maximum of 24M baud !) are working fine, | |
332 | * but that should really be tested carefully in "real life" scenarios | |
333 | * before removing the upper limit completely. | |
334 | * Baud rates smaller than the specified 75 baud are definitely working | |
335 | * fine. | |
336 | */ | |
e8bbd5c4 | 337 | if (type == HX) |
034d1527 | 338 | baud = min_t(int, baud, 6000000 * 1.1); |
e8bbd5c4 GKH |
339 | else |
340 | baud = min_t(int, baud, 1228800 * 1.1); | |
e917ba01 FS |
341 | /* Determine factors A and B */ |
342 | A = 0; | |
343 | B = 12000000 * 32 / baud; /* 12MHz */ | |
344 | B <<= 1; /* Add one bit for rounding */ | |
345 | while (B > (512 << 1) && A <= 14) { | |
346 | A += 2; | |
347 | B >>= 2; | |
348 | } | |
349 | if (A > 14) { /* max. divisor = min. baudrate reached */ | |
350 | A = 14; | |
351 | B = 512; | |
352 | /* => ~45.78 baud */ | |
353 | } else { | |
354 | B = (B + 1) >> 1; /* Round the last bit */ | |
355 | } | |
356 | /* Handle special cases */ | |
357 | if (B == 512) | |
358 | B = 0; /* also: 1 to 8 */ | |
359 | else if (B < 16) | |
360 | /* | |
361 | * NOTE: With the current algorithm this happens | |
362 | * only for A=0 and means that the min. divisor | |
363 | * (respectively: the max. baudrate) is reached. | |
364 | */ | |
365 | B = 16; /* => 24 MBaud */ | |
366 | /* Encode the baud rate */ | |
367 | buf[3] = 0x80; /* Select divisor encoding method */ | |
368 | buf[2] = 0; | |
369 | buf[1] = (A & 0x0e); /* A */ | |
370 | buf[1] |= ((B & 0x100) >> 8); /* MSB of B */ | |
371 | buf[0] = B & 0xff; /* 8 LSBs of B */ | |
372 | /* Calculate the actual/resulting baud rate */ | |
373 | if (B <= 8) | |
374 | B = 512; | |
375 | baud = 12000000 * 32 / ((1 << A) * B); | |
376 | ||
377 | return baud; | |
378 | } | |
379 | ||
15e7cead JH |
380 | static void pl2303_encode_baudrate(struct tty_struct *tty, |
381 | struct usb_serial_port *port, | |
e917ba01 | 382 | enum pl2303_type type, |
15e7cead | 383 | u8 buf[4]) |
1da177e4 | 384 | { |
15e7cead | 385 | int baud; |
1da177e4 | 386 | |
95da310e | 387 | baud = tty_get_baud_rate(tty); |
d8789b2b | 388 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
b2d6d98f JH |
389 | if (!baud) |
390 | return; | |
e917ba01 FS |
391 | /* |
392 | * There are two methods for setting/encoding the baud rate | |
393 | * 1) Direct method: encodes the baud rate value directly | |
394 | * => supported by all chip types | |
395 | * 2) Divisor based method: encodes a divisor to a base value (12MHz*32) | |
09169197 | 396 | * => supported by HX chips (and likely not by type_0/1 chips) |
e917ba01 | 397 | */ |
e8bbd5c4 | 398 | if (type != HX) |
e917ba01 FS |
399 | baud = pl2303_baudrate_encode_direct(baud, type, buf); |
400 | else | |
401 | baud = pl2303_baudrate_encode_divisor(baud, type, buf); | |
15e7cead | 402 | /* Save resulting baud rate */ |
b2d6d98f JH |
403 | tty_encode_baud_rate(tty, baud, baud); |
404 | dev_dbg(&port->dev, "baud set = %d\n", baud); | |
15e7cead JH |
405 | } |
406 | ||
407 | static void pl2303_set_termios(struct tty_struct *tty, | |
408 | struct usb_serial_port *port, struct ktermios *old_termios) | |
409 | { | |
410 | struct usb_serial *serial = port->serial; | |
411 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
412 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
413 | unsigned long flags; | |
15e7cead JH |
414 | unsigned char *buf; |
415 | int i; | |
416 | u8 control; | |
417 | ||
87265b45 JH |
418 | /* |
419 | * The PL2303 is reported to lose bytes if you change serial settings | |
420 | * even to the same values as before. Thus we actually need to filter | |
421 | * in this specific case. | |
422 | */ | |
15e7cead JH |
423 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
424 | return; | |
425 | ||
15e7cead JH |
426 | buf = kzalloc(7, GFP_KERNEL); |
427 | if (!buf) { | |
428 | dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
429 | /* Report back no change occurred */ | |
430 | if (old_termios) | |
431 | tty->termios = *old_termios; | |
432 | return; | |
433 | } | |
434 | ||
435 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
436 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
437 | 0, 0, buf, 7, 100); | |
438 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); | |
439 | ||
87265b45 JH |
440 | if (C_CSIZE(tty)) { |
441 | switch (C_CSIZE(tty)) { | |
15e7cead JH |
442 | case CS5: |
443 | buf[6] = 5; | |
444 | break; | |
445 | case CS6: | |
446 | buf[6] = 6; | |
447 | break; | |
448 | case CS7: | |
449 | buf[6] = 7; | |
450 | break; | |
451 | default: | |
452 | case CS8: | |
453 | buf[6] = 8; | |
15e7cead JH |
454 | } |
455 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); | |
456 | } | |
457 | ||
e917ba01 FS |
458 | /* For reference: buf[0]:buf[3] baud rate value */ |
459 | pl2303_encode_baudrate(tty, port, spriv->type, buf); | |
15e7cead | 460 | |
1da177e4 LT |
461 | /* For reference buf[4]=0 is 1 stop bits */ |
462 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
463 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
464 | if (C_CSTOPB(tty)) { |
465 | /* | |
466 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
467 | * use 1.5 instead of 2 stop bits with 5 data bits |
468 | */ | |
87265b45 | 469 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 470 | buf[4] = 1; |
d8789b2b | 471 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
472 | } else { |
473 | buf[4] = 2; | |
d8789b2b | 474 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 475 | } |
1da177e4 LT |
476 | } else { |
477 | buf[4] = 0; | |
d8789b2b | 478 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
479 | } |
480 | ||
87265b45 | 481 | if (C_PARENB(tty)) { |
1da177e4 LT |
482 | /* For reference buf[5]=0 is none parity */ |
483 | /* For reference buf[5]=1 is odd parity */ | |
484 | /* For reference buf[5]=2 is even parity */ | |
485 | /* For reference buf[5]=3 is mark parity */ | |
486 | /* For reference buf[5]=4 is space parity */ | |
87265b45 JH |
487 | if (C_PARODD(tty)) { |
488 | if (tty->termios.c_cflag & CMSPAR) { | |
6dd81b45 | 489 | buf[5] = 3; |
d8789b2b | 490 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
491 | } else { |
492 | buf[5] = 1; | |
d8789b2b | 493 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 494 | } |
1da177e4 | 495 | } else { |
87265b45 | 496 | if (tty->termios.c_cflag & CMSPAR) { |
6dd81b45 | 497 | buf[5] = 4; |
d8789b2b | 498 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
499 | } else { |
500 | buf[5] = 2; | |
d8789b2b | 501 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 502 | } |
1da177e4 LT |
503 | } |
504 | } else { | |
505 | buf[5] = 0; | |
d8789b2b | 506 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
507 | } |
508 | ||
372db8a7 TG |
509 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
510 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
511 | 0, 0, buf, 7, 100); | |
d8789b2b | 512 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); |
1da177e4 LT |
513 | |
514 | /* change control lines if we are switching to or from B0 */ | |
515 | spin_lock_irqsave(&priv->lock, flags); | |
516 | control = priv->line_control; | |
87265b45 | 517 | if (C_BAUD(tty) == B0) |
1da177e4 | 518 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 519 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
520 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
521 | if (control != priv->line_control) { | |
522 | control = priv->line_control; | |
523 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 524 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
525 | } else { |
526 | spin_unlock_irqrestore(&priv->lock, flags); | |
527 | } | |
372db8a7 | 528 | |
87265b45 | 529 | memset(buf, 0, 7); |
372db8a7 TG |
530 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
531 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
532 | 0, 0, buf, 7, 100); | |
715cf92a | 533 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 | 534 | |
87265b45 | 535 | if (C_CRTSCTS(tty)) { |
e8bbd5c4 | 536 | if (spriv->type == HX) |
034d1527 | 537 | pl2303_vendor_write(0x0, 0x61, serial); |
e8bbd5c4 GKH |
538 | else |
539 | pl2303_vendor_write(0x0, 0x41, serial); | |
715f9527 | 540 | } else { |
eb44da0b | 541 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 542 | } |
572d3138 TG |
543 | |
544 | kfree(buf); | |
545 | } | |
546 | ||
335f8514 AC |
547 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
548 | { | |
549 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
550 | unsigned long flags; | |
551 | u8 control; | |
552 | ||
553 | spin_lock_irqsave(&priv->lock, flags); | |
554 | /* Change DTR and RTS */ | |
555 | if (on) | |
556 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
557 | else | |
558 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
559 | control = priv->line_control; | |
560 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 561 | pl2303_set_control_lines(port, control); |
335f8514 AC |
562 | } |
563 | ||
564 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 565 | { |
8b0127b2 | 566 | usb_serial_generic_close(port); |
572d3138 | 567 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
568 | } |
569 | ||
a509a7e4 | 570 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 571 | { |
1da177e4 | 572 | struct usb_serial *serial = port->serial; |
8bf769eb | 573 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
574 | int result; |
575 | ||
e8bbd5c4 | 576 | if (spriv->type != HX) { |
1694899f D |
577 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
578 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 579 | } else { |
1da177e4 | 580 | /* reset upstream data pipes */ |
eb44da0b SS |
581 | pl2303_vendor_write(8, 0, serial); |
582 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
583 | } |
584 | ||
1da177e4 | 585 | /* Setup termios */ |
95da310e | 586 | if (tty) |
2d8f4447 | 587 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 588 | |
372db8a7 | 589 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 590 | if (result) { |
372db8a7 | 591 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 592 | " error %d\n", __func__, result); |
db6e9186 | 593 | return result; |
1da177e4 | 594 | } |
d4691c3f | 595 | |
f5230a53 | 596 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
597 | if (result) { |
598 | usb_kill_urb(port->interrupt_in_urb); | |
599 | return result; | |
600 | } | |
601 | ||
1da177e4 LT |
602 | return 0; |
603 | } | |
604 | ||
20b9d177 | 605 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 606 | unsigned int set, unsigned int clear) |
1da177e4 | 607 | { |
95da310e | 608 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
609 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
610 | unsigned long flags; | |
611 | u8 control; | |
6f1efd6c | 612 | int ret; |
6fdd8e8e | 613 | |
372db8a7 | 614 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
615 | if (set & TIOCM_RTS) |
616 | priv->line_control |= CONTROL_RTS; | |
617 | if (set & TIOCM_DTR) | |
618 | priv->line_control |= CONTROL_DTR; | |
619 | if (clear & TIOCM_RTS) | |
620 | priv->line_control &= ~CONTROL_RTS; | |
621 | if (clear & TIOCM_DTR) | |
622 | priv->line_control &= ~CONTROL_DTR; | |
623 | control = priv->line_control; | |
372db8a7 | 624 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 625 | |
5ddbb26b JH |
626 | ret = pl2303_set_control_lines(port, control); |
627 | if (ret) | |
628 | return usb_translate_errors(ret); | |
6f1efd6c | 629 | |
5ddbb26b | 630 | return 0; |
1da177e4 LT |
631 | } |
632 | ||
60b33c13 | 633 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 634 | { |
95da310e | 635 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
636 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
637 | unsigned long flags; | |
638 | unsigned int mcr; | |
639 | unsigned int status; | |
640 | unsigned int result; | |
641 | ||
372db8a7 | 642 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
643 | mcr = priv->line_control; |
644 | status = priv->line_status; | |
372db8a7 | 645 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
646 | |
647 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
648 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
649 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
650 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
651 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
652 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
653 | ||
d8789b2b | 654 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
655 | |
656 | return result; | |
657 | } | |
658 | ||
335f8514 AC |
659 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
660 | { | |
661 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
662 | if (priv->line_status & UART_DCD) | |
663 | return 1; | |
664 | return 0; | |
665 | } | |
666 | ||
824d11be | 667 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 668 | { |
824d11be | 669 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
670 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
671 | unsigned long flags; | |
672 | unsigned int prevstatus; | |
673 | unsigned int status; | |
674 | unsigned int changed; | |
675 | ||
372db8a7 | 676 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 677 | prevstatus = priv->line_status; |
372db8a7 | 678 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
679 | |
680 | while (1) { | |
6d0cad65 | 681 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
682 | /* see if a signal did it */ |
683 | if (signal_pending(current)) | |
684 | return -ERESTARTSYS; | |
372db8a7 | 685 | |
40509ca9 JH |
686 | if (port->serial->disconnected) |
687 | return -EIO; | |
688 | ||
372db8a7 | 689 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 690 | status = priv->line_status; |
372db8a7 TG |
691 | spin_unlock_irqrestore(&priv->lock, flags); |
692 | ||
3a0f43e9 | 693 | changed = prevstatus ^ status; |
372db8a7 | 694 | |
1da177e4 LT |
695 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
696 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
697 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 698 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
699 | return 0; |
700 | } | |
701 | prevstatus = status; | |
702 | } | |
703 | /* NOTREACHED */ | |
704 | return 0; | |
705 | } | |
706 | ||
00a0d0d6 | 707 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 708 | unsigned int cmd, unsigned long arg) |
1da177e4 | 709 | { |
67b9946d | 710 | struct serial_struct ser; |
95da310e | 711 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
712 | |
713 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
714 | |
715 | switch (cmd) { | |
67b9946d JT |
716 | case TIOCGSERIAL: |
717 | memset(&ser, 0, sizeof ser); | |
718 | ser.type = PORT_16654; | |
e5b1e206 | 719 | ser.line = port->minor; |
1143832e | 720 | ser.port = port->port_number; |
67b9946d JT |
721 | ser.baud_base = 460800; |
722 | ||
723 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
724 | return -EFAULT; | |
725 | ||
726 | return 0; | |
3a0f43e9 | 727 | default: |
d8789b2b | 728 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 729 | break; |
1da177e4 | 730 | } |
1da177e4 LT |
731 | return -ENOIOCTLCMD; |
732 | } | |
733 | ||
95da310e | 734 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 735 | { |
95da310e | 736 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
737 | struct usb_serial *serial = port->serial; |
738 | u16 state; | |
739 | int result; | |
740 | ||
1da177e4 LT |
741 | if (break_state == 0) |
742 | state = BREAK_OFF; | |
743 | else | |
744 | state = BREAK_ON; | |
d8789b2b | 745 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 746 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 747 | |
372db8a7 TG |
748 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
749 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
750 | 0, NULL, 0, 100); | |
1da177e4 | 751 | if (result) |
d8789b2b | 752 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
753 | } |
754 | ||
97bb13ec FL |
755 | static void pl2303_update_line_status(struct usb_serial_port *port, |
756 | unsigned char *data, | |
757 | unsigned int actual_length) | |
758 | { | |
759 | ||
760 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 761 | struct tty_struct *tty; |
97bb13ec FL |
762 | unsigned long flags; |
763 | u8 status_idx = UART_STATE; | |
95f209f9 | 764 | u8 length = UART_STATE + 1; |
d14fc1a7 | 765 | u8 prev_line_status; |
9c537616 | 766 | u16 idv, idp; |
97bb13ec | 767 | |
9c537616 TG |
768 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
769 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
770 | ||
771 | ||
772 | if (idv == SIEMENS_VENDOR_ID) { | |
773 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
774 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
775 | idp == SIEMENS_PRODUCT_ID_X75) { | |
776 | ||
777 | length = 1; | |
778 | status_idx = 0; | |
779 | } | |
97bb13ec FL |
780 | } |
781 | ||
782 | if (actual_length < length) | |
a009b75a | 783 | return; |
97bb13ec | 784 | |
3a0f43e9 | 785 | /* Save off the uart status for others to look at */ |
97bb13ec | 786 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 787 | prev_line_status = priv->line_status; |
97bb13ec FL |
788 | priv->line_status = data[status_idx]; |
789 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
790 | if (priv->line_status & UART_BREAK_ERROR) |
791 | usb_serial_handle_break(port); | |
6d0cad65 | 792 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
793 | |
794 | tty = tty_port_tty_get(&port->port); | |
795 | if (!tty) | |
796 | return; | |
797 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
798 | usb_serial_handle_dcd_change(port, tty, | |
799 | priv->line_status & UART_DCD); | |
800 | tty_kref_put(tty); | |
97bb13ec | 801 | } |
1da177e4 | 802 | |
7d12e780 | 803 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 804 | { |
cdc97792 | 805 | struct usb_serial_port *port = urb->context; |
1da177e4 | 806 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 807 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
808 | int status = urb->status; |
809 | int retval; | |
1da177e4 | 810 | |
461d696a | 811 | switch (status) { |
1da177e4 LT |
812 | case 0: |
813 | /* success */ | |
814 | break; | |
815 | case -ECONNRESET: | |
816 | case -ENOENT: | |
817 | case -ESHUTDOWN: | |
818 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
819 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
820 | __func__, status); | |
1da177e4 LT |
821 | return; |
822 | default: | |
d8789b2b GKH |
823 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
824 | __func__, status); | |
1da177e4 LT |
825 | goto exit; |
826 | } | |
827 | ||
59d33f2f | 828 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
829 | urb->actual_length, urb->transfer_buffer); |
830 | ||
97bb13ec | 831 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 832 | |
1da177e4 | 833 | exit: |
461d696a GKH |
834 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
835 | if (retval) | |
d8789b2b | 836 | dev_err(&port->dev, |
372db8a7 | 837 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 838 | __func__, retval); |
1da177e4 LT |
839 | } |
840 | ||
f08e07ac | 841 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 842 | { |
f08e07ac JH |
843 | struct usb_serial_port *port = urb->context; |
844 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 845 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 846 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
847 | unsigned long flags; |
848 | u8 line_status; | |
849 | int i; | |
850 | ||
851 | /* update line status */ | |
852 | spin_lock_irqsave(&priv->lock, flags); | |
853 | line_status = priv->line_status; | |
854 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
855 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 856 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
857 | |
858 | if (!urb->actual_length) | |
859 | return; | |
860 | ||
d4fc4a7b AC |
861 | /* break takes precedence over parity, */ |
862 | /* which takes precedence over framing errors */ | |
863 | if (line_status & UART_BREAK_ERROR) | |
864 | tty_flag = TTY_BREAK; | |
865 | else if (line_status & UART_PARITY_ERROR) | |
866 | tty_flag = TTY_PARITY; | |
867 | else if (line_status & UART_FRAME_ERROR) | |
868 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 869 | |
3ba19fe3 JH |
870 | if (tty_flag != TTY_NORMAL) |
871 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
872 | tty_flag); | |
d4fc4a7b AC |
873 | /* overrun is special, not associated with a char */ |
874 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 875 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 876 | |
d45cc8df | 877 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 878 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 879 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
880 | tty_insert_flip_char(&port->port, data[i], |
881 | tty_flag); | |
d45cc8df | 882 | } else { |
2f693357 | 883 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 884 | urb->actual_length); |
9388e2e7 | 885 | } |
1da177e4 | 886 | |
2e124b4a | 887 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
888 | } |
889 | ||
572d3138 TG |
890 | /* All of the device info needed for the PL2303 SIO serial converter */ |
891 | static struct usb_serial_driver pl2303_device = { | |
892 | .driver = { | |
893 | .owner = THIS_MODULE, | |
894 | .name = "pl2303", | |
895 | }, | |
896 | .id_table = id_table, | |
572d3138 | 897 | .num_ports = 1, |
7919c2fd | 898 | .bulk_in_size = 256, |
3efeaff6 | 899 | .bulk_out_size = 256, |
572d3138 TG |
900 | .open = pl2303_open, |
901 | .close = pl2303_close, | |
335f8514 AC |
902 | .dtr_rts = pl2303_dtr_rts, |
903 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
904 | .ioctl = pl2303_ioctl, |
905 | .break_ctl = pl2303_break_ctl, | |
906 | .set_termios = pl2303_set_termios, | |
907 | .tiocmget = pl2303_tiocmget, | |
908 | .tiocmset = pl2303_tiocmset, | |
824d11be | 909 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 910 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 911 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 912 | .attach = pl2303_startup, |
f9c99bb8 | 913 | .release = pl2303_release, |
8bf769eb JH |
914 | .port_probe = pl2303_port_probe, |
915 | .port_remove = pl2303_port_remove, | |
572d3138 | 916 | }; |
1da177e4 | 917 | |
f667ddad AS |
918 | static struct usb_serial_driver * const serial_drivers[] = { |
919 | &pl2303_device, NULL | |
920 | }; | |
921 | ||
68e24113 | 922 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
923 | |
924 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 925 | MODULE_LICENSE("GPL"); |