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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 | * | |
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; |
a77a8c23 | 180 | char *type_str = "unknown (treating as type_0)"; |
3e152505 | 181 | unsigned char *buf; |
8bf769eb JH |
182 | |
183 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
184 | if (!spriv) | |
185 | return -ENOMEM; | |
1da177e4 | 186 | |
3e152505 | 187 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
188 | if (!buf) { |
189 | kfree(spriv); | |
3e152505 | 190 | return -ENOMEM; |
8bf769eb | 191 | } |
3e152505 | 192 | |
a77a8c23 | 193 | if (serial->dev->descriptor.bDeviceClass == 0x02) { |
1da177e4 | 194 | type = type_0; |
a77a8c23 FS |
195 | type_str = "type_0"; |
196 | } else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) { | |
e8bbd5c4 GKH |
197 | type = HX; |
198 | type_str = "X/HX"; | |
a77a8c23 FS |
199 | } else if (serial->dev->descriptor.bDeviceClass == 0x00 |
200 | || serial->dev->descriptor.bDeviceClass == 0xFF) { | |
1da177e4 | 201 | type = type_1; |
a77a8c23 FS |
202 | type_str = "type_1"; |
203 | } | |
204 | dev_dbg(&serial->interface->dev, "device type: %s\n", type_str); | |
1da177e4 | 205 | |
8bf769eb JH |
206 | spriv->type = type; |
207 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
208 | |
209 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
210 | pl2303_vendor_write(0x0404, 0, serial); | |
211 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
212 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
213 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
214 | pl2303_vendor_write(0x0404, 1, serial); | |
215 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
216 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
217 | pl2303_vendor_write(0, 1, serial); | |
218 | pl2303_vendor_write(1, 0, serial); | |
e8bbd5c4 | 219 | if (type == HX) |
034d1527 | 220 | pl2303_vendor_write(2, 0x44, serial); |
e8bbd5c4 GKH |
221 | else |
222 | pl2303_vendor_write(2, 0x24, serial); | |
3e152505 SS |
223 | |
224 | kfree(buf); | |
1da177e4 | 225 | return 0; |
8bf769eb | 226 | } |
1da177e4 | 227 | |
8bf769eb JH |
228 | static void pl2303_release(struct usb_serial *serial) |
229 | { | |
230 | struct pl2303_serial_private *spriv; | |
231 | ||
232 | spriv = usb_get_serial_data(serial); | |
233 | kfree(spriv); | |
234 | } | |
235 | ||
236 | static int pl2303_port_probe(struct usb_serial_port *port) | |
237 | { | |
238 | struct pl2303_private *priv; | |
239 | ||
240 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
241 | if (!priv) | |
242 | return -ENOMEM; | |
243 | ||
244 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
245 | |
246 | usb_set_serial_port_data(port, priv); | |
247 | ||
d7be6221 JH |
248 | port->port.drain_delay = 256; |
249 | ||
8bf769eb JH |
250 | return 0; |
251 | } | |
252 | ||
253 | static int pl2303_port_remove(struct usb_serial_port *port) | |
254 | { | |
255 | struct pl2303_private *priv; | |
256 | ||
257 | priv = usb_get_serial_port_data(port); | |
258 | kfree(priv); | |
259 | ||
260 | return 0; | |
1da177e4 LT |
261 | } |
262 | ||
f45d0a5a | 263 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 264 | { |
f45d0a5a | 265 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 266 | int retval; |
3a0f43e9 | 267 | |
372db8a7 TG |
268 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
269 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
270 | value, 0, NULL, 0, 100); | |
f45d0a5a | 271 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 272 | value, retval); |
1da177e4 LT |
273 | return retval; |
274 | } | |
275 | ||
e917ba01 FS |
276 | static int pl2303_baudrate_encode_direct(int baud, enum pl2303_type type, |
277 | u8 buf[4]) | |
278 | { | |
279 | /* | |
280 | * NOTE: Only the values defined in baud_sup are supported ! | |
09169197 GKH |
281 | * => if unsupported values are set, the PL2303 seems to |
282 | * use 9600 baud (at least my PL2303X always does) | |
e917ba01 FS |
283 | */ |
284 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, | |
285 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
286 | 57600, 115200, 230400, 460800, 614400, 921600, | |
e8bbd5c4 | 287 | 1228800, 2457600, 3000000, 6000000 }; |
c23bda36 | 288 | /* |
e8bbd5c4 GKH |
289 | * NOTE: The PL2303HX (tested with rev. 3A) also supports the following |
290 | * baud rates: 128000, 134400, 161280, 201600, 268800, 403200, 806400. | |
291 | * As long as we are not using this encoding method for them, there is | |
292 | * no point in complicating the code to support them. | |
c23bda36 | 293 | */ |
e917ba01 FS |
294 | int i; |
295 | ||
296 | /* Set baudrate to nearest supported value */ | |
297 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { | |
298 | if (baud_sup[i] > baud) | |
299 | break; | |
300 | } | |
301 | if (i == ARRAY_SIZE(baud_sup)) | |
302 | baud = baud_sup[i - 1]; | |
303 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
304 | baud = baud_sup[i - 1]; | |
305 | else | |
306 | baud = baud_sup[i]; | |
e8bbd5c4 GKH |
307 | /* type_0, type_1 only support up to 1228800 baud */ |
308 | if (type != HX) | |
e917ba01 FS |
309 | baud = min_t(int, baud, 1228800); |
310 | /* Direct (standard) baud rate encoding method */ | |
311 | put_unaligned_le32(baud, buf); | |
312 | ||
313 | return baud; | |
314 | } | |
315 | ||
316 | static int pl2303_baudrate_encode_divisor(int baud, enum pl2303_type type, | |
317 | u8 buf[4]) | |
318 | { | |
319 | /* | |
320 | * Divisor based baud rate encoding method | |
321 | * | |
09169197 | 322 | * NOTE: it's not clear if the type_0/1 chips support this method |
e917ba01 FS |
323 | * |
324 | * divisor = 12MHz * 32 / baudrate = 2^A * B | |
325 | * | |
326 | * with | |
327 | * | |
328 | * A = buf[1] & 0x0e | |
329 | * B = buf[0] + (buf[1] & 0x01) << 8 | |
330 | * | |
331 | * Special cases: | |
332 | * => 8 < B < 16: device seems to work not properly | |
333 | * => B <= 8: device uses the max. value B = 512 instead | |
334 | */ | |
335 | unsigned int A, B; | |
336 | ||
b5c16c6a FS |
337 | /* |
338 | * NOTE: The Windows driver allows maximum baud rates of 110% of the | |
339 | * specified maximium value. | |
340 | * Quick tests with early (2004) HX (rev. A) chips suggest, that even | |
341 | * higher baud rates (up to the maximum of 24M baud !) are working fine, | |
342 | * but that should really be tested carefully in "real life" scenarios | |
343 | * before removing the upper limit completely. | |
344 | * Baud rates smaller than the specified 75 baud are definitely working | |
345 | * fine. | |
346 | */ | |
e8bbd5c4 | 347 | if (type == HX) |
034d1527 | 348 | baud = min_t(int, baud, 6000000 * 1.1); |
e8bbd5c4 GKH |
349 | else |
350 | baud = min_t(int, baud, 1228800 * 1.1); | |
e917ba01 FS |
351 | /* Determine factors A and B */ |
352 | A = 0; | |
353 | B = 12000000 * 32 / baud; /* 12MHz */ | |
354 | B <<= 1; /* Add one bit for rounding */ | |
355 | while (B > (512 << 1) && A <= 14) { | |
356 | A += 2; | |
357 | B >>= 2; | |
358 | } | |
359 | if (A > 14) { /* max. divisor = min. baudrate reached */ | |
360 | A = 14; | |
361 | B = 512; | |
362 | /* => ~45.78 baud */ | |
363 | } else { | |
364 | B = (B + 1) >> 1; /* Round the last bit */ | |
365 | } | |
366 | /* Handle special cases */ | |
367 | if (B == 512) | |
368 | B = 0; /* also: 1 to 8 */ | |
369 | else if (B < 16) | |
370 | /* | |
371 | * NOTE: With the current algorithm this happens | |
372 | * only for A=0 and means that the min. divisor | |
373 | * (respectively: the max. baudrate) is reached. | |
374 | */ | |
375 | B = 16; /* => 24 MBaud */ | |
376 | /* Encode the baud rate */ | |
377 | buf[3] = 0x80; /* Select divisor encoding method */ | |
378 | buf[2] = 0; | |
379 | buf[1] = (A & 0x0e); /* A */ | |
380 | buf[1] |= ((B & 0x100) >> 8); /* MSB of B */ | |
381 | buf[0] = B & 0xff; /* 8 LSBs of B */ | |
382 | /* Calculate the actual/resulting baud rate */ | |
383 | if (B <= 8) | |
384 | B = 512; | |
385 | baud = 12000000 * 32 / ((1 << A) * B); | |
386 | ||
387 | return baud; | |
388 | } | |
389 | ||
15e7cead JH |
390 | static void pl2303_encode_baudrate(struct tty_struct *tty, |
391 | struct usb_serial_port *port, | |
e917ba01 | 392 | enum pl2303_type type, |
15e7cead | 393 | u8 buf[4]) |
1da177e4 | 394 | { |
15e7cead | 395 | int baud; |
1da177e4 | 396 | |
95da310e | 397 | baud = tty_get_baud_rate(tty); |
d8789b2b | 398 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
b2d6d98f JH |
399 | if (!baud) |
400 | return; | |
e917ba01 FS |
401 | /* |
402 | * There are two methods for setting/encoding the baud rate | |
403 | * 1) Direct method: encodes the baud rate value directly | |
404 | * => supported by all chip types | |
405 | * 2) Divisor based method: encodes a divisor to a base value (12MHz*32) | |
09169197 | 406 | * => supported by HX chips (and likely not by type_0/1 chips) |
c23bda36 FS |
407 | * |
408 | * NOTE: Although the divisor based baud rate encoding method is much | |
409 | * more flexible, some of the standard baud rate values can not be | |
410 | * realized exactly. But the difference is very small (max. 0.2%) and | |
411 | * the device likely uses the same baud rate generator for both methods | |
412 | * so that there is likley no difference. | |
e917ba01 | 413 | */ |
e8bbd5c4 | 414 | if (type != HX) |
e917ba01 FS |
415 | baud = pl2303_baudrate_encode_direct(baud, type, buf); |
416 | else | |
417 | baud = pl2303_baudrate_encode_divisor(baud, type, buf); | |
15e7cead | 418 | /* Save resulting baud rate */ |
b2d6d98f JH |
419 | tty_encode_baud_rate(tty, baud, baud); |
420 | dev_dbg(&port->dev, "baud set = %d\n", baud); | |
15e7cead JH |
421 | } |
422 | ||
423 | static void pl2303_set_termios(struct tty_struct *tty, | |
424 | struct usb_serial_port *port, struct ktermios *old_termios) | |
425 | { | |
426 | struct usb_serial *serial = port->serial; | |
427 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
428 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
429 | unsigned long flags; | |
15e7cead JH |
430 | unsigned char *buf; |
431 | int i; | |
432 | u8 control; | |
433 | ||
87265b45 JH |
434 | /* |
435 | * The PL2303 is reported to lose bytes if you change serial settings | |
436 | * even to the same values as before. Thus we actually need to filter | |
437 | * in this specific case. | |
438 | */ | |
15e7cead JH |
439 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
440 | return; | |
441 | ||
15e7cead JH |
442 | buf = kzalloc(7, GFP_KERNEL); |
443 | if (!buf) { | |
444 | dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
445 | /* Report back no change occurred */ | |
446 | if (old_termios) | |
447 | tty->termios = *old_termios; | |
448 | return; | |
449 | } | |
450 | ||
451 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
452 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
453 | 0, 0, buf, 7, 100); | |
454 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); | |
455 | ||
87265b45 JH |
456 | if (C_CSIZE(tty)) { |
457 | switch (C_CSIZE(tty)) { | |
15e7cead JH |
458 | case CS5: |
459 | buf[6] = 5; | |
460 | break; | |
461 | case CS6: | |
462 | buf[6] = 6; | |
463 | break; | |
464 | case CS7: | |
465 | buf[6] = 7; | |
466 | break; | |
467 | default: | |
468 | case CS8: | |
469 | buf[6] = 8; | |
15e7cead JH |
470 | } |
471 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); | |
472 | } | |
473 | ||
e917ba01 FS |
474 | /* For reference: buf[0]:buf[3] baud rate value */ |
475 | pl2303_encode_baudrate(tty, port, spriv->type, buf); | |
15e7cead | 476 | |
1da177e4 LT |
477 | /* For reference buf[4]=0 is 1 stop bits */ |
478 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
479 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
480 | if (C_CSTOPB(tty)) { |
481 | /* | |
482 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
483 | * use 1.5 instead of 2 stop bits with 5 data bits |
484 | */ | |
87265b45 | 485 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 486 | buf[4] = 1; |
d8789b2b | 487 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
488 | } else { |
489 | buf[4] = 2; | |
d8789b2b | 490 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 491 | } |
1da177e4 LT |
492 | } else { |
493 | buf[4] = 0; | |
d8789b2b | 494 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
495 | } |
496 | ||
87265b45 | 497 | if (C_PARENB(tty)) { |
1da177e4 LT |
498 | /* For reference buf[5]=0 is none parity */ |
499 | /* For reference buf[5]=1 is odd parity */ | |
500 | /* For reference buf[5]=2 is even parity */ | |
501 | /* For reference buf[5]=3 is mark parity */ | |
502 | /* For reference buf[5]=4 is space parity */ | |
87265b45 JH |
503 | if (C_PARODD(tty)) { |
504 | if (tty->termios.c_cflag & CMSPAR) { | |
6dd81b45 | 505 | buf[5] = 3; |
d8789b2b | 506 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
507 | } else { |
508 | buf[5] = 1; | |
d8789b2b | 509 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 510 | } |
1da177e4 | 511 | } else { |
87265b45 | 512 | if (tty->termios.c_cflag & CMSPAR) { |
6dd81b45 | 513 | buf[5] = 4; |
d8789b2b | 514 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
515 | } else { |
516 | buf[5] = 2; | |
d8789b2b | 517 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 518 | } |
1da177e4 LT |
519 | } |
520 | } else { | |
521 | buf[5] = 0; | |
d8789b2b | 522 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
523 | } |
524 | ||
372db8a7 TG |
525 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
526 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
527 | 0, 0, buf, 7, 100); | |
d8789b2b | 528 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); |
1da177e4 LT |
529 | |
530 | /* change control lines if we are switching to or from B0 */ | |
531 | spin_lock_irqsave(&priv->lock, flags); | |
532 | control = priv->line_control; | |
87265b45 | 533 | if (C_BAUD(tty) == B0) |
1da177e4 | 534 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 535 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
536 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
537 | if (control != priv->line_control) { | |
538 | control = priv->line_control; | |
539 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 540 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
541 | } else { |
542 | spin_unlock_irqrestore(&priv->lock, flags); | |
543 | } | |
372db8a7 | 544 | |
87265b45 | 545 | memset(buf, 0, 7); |
372db8a7 TG |
546 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
547 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
548 | 0, 0, buf, 7, 100); | |
715cf92a | 549 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 | 550 | |
87265b45 | 551 | if (C_CRTSCTS(tty)) { |
e8bbd5c4 | 552 | if (spriv->type == HX) |
034d1527 | 553 | pl2303_vendor_write(0x0, 0x61, serial); |
e8bbd5c4 GKH |
554 | else |
555 | pl2303_vendor_write(0x0, 0x41, serial); | |
715f9527 | 556 | } else { |
eb44da0b | 557 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 558 | } |
572d3138 TG |
559 | |
560 | kfree(buf); | |
561 | } | |
562 | ||
335f8514 AC |
563 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
564 | { | |
565 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
566 | unsigned long flags; | |
567 | u8 control; | |
568 | ||
569 | spin_lock_irqsave(&priv->lock, flags); | |
570 | /* Change DTR and RTS */ | |
571 | if (on) | |
572 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
573 | else | |
574 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
575 | control = priv->line_control; | |
576 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 577 | pl2303_set_control_lines(port, control); |
335f8514 AC |
578 | } |
579 | ||
580 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 581 | { |
8b0127b2 | 582 | usb_serial_generic_close(port); |
572d3138 | 583 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
584 | } |
585 | ||
a509a7e4 | 586 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 587 | { |
1da177e4 | 588 | struct usb_serial *serial = port->serial; |
8bf769eb | 589 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
590 | int result; |
591 | ||
e8bbd5c4 | 592 | if (spriv->type != HX) { |
1694899f D |
593 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
594 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 595 | } else { |
1da177e4 | 596 | /* reset upstream data pipes */ |
eb44da0b SS |
597 | pl2303_vendor_write(8, 0, serial); |
598 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
599 | } |
600 | ||
1da177e4 | 601 | /* Setup termios */ |
95da310e | 602 | if (tty) |
2d8f4447 | 603 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 604 | |
372db8a7 | 605 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 606 | if (result) { |
372db8a7 | 607 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 608 | " error %d\n", __func__, result); |
db6e9186 | 609 | return result; |
1da177e4 | 610 | } |
d4691c3f | 611 | |
f5230a53 | 612 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
613 | if (result) { |
614 | usb_kill_urb(port->interrupt_in_urb); | |
615 | return result; | |
616 | } | |
617 | ||
1da177e4 LT |
618 | return 0; |
619 | } | |
620 | ||
20b9d177 | 621 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 622 | unsigned int set, unsigned int clear) |
1da177e4 | 623 | { |
95da310e | 624 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
625 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
626 | unsigned long flags; | |
627 | u8 control; | |
6f1efd6c | 628 | int ret; |
6fdd8e8e | 629 | |
372db8a7 | 630 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
631 | if (set & TIOCM_RTS) |
632 | priv->line_control |= CONTROL_RTS; | |
633 | if (set & TIOCM_DTR) | |
634 | priv->line_control |= CONTROL_DTR; | |
635 | if (clear & TIOCM_RTS) | |
636 | priv->line_control &= ~CONTROL_RTS; | |
637 | if (clear & TIOCM_DTR) | |
638 | priv->line_control &= ~CONTROL_DTR; | |
639 | control = priv->line_control; | |
372db8a7 | 640 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 641 | |
5ddbb26b JH |
642 | ret = pl2303_set_control_lines(port, control); |
643 | if (ret) | |
644 | return usb_translate_errors(ret); | |
6f1efd6c | 645 | |
5ddbb26b | 646 | return 0; |
1da177e4 LT |
647 | } |
648 | ||
60b33c13 | 649 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 650 | { |
95da310e | 651 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
652 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
653 | unsigned long flags; | |
654 | unsigned int mcr; | |
655 | unsigned int status; | |
656 | unsigned int result; | |
657 | ||
372db8a7 | 658 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
659 | mcr = priv->line_control; |
660 | status = priv->line_status; | |
372db8a7 | 661 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
662 | |
663 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
664 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
665 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
666 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
667 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
668 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
669 | ||
d8789b2b | 670 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
671 | |
672 | return result; | |
673 | } | |
674 | ||
335f8514 AC |
675 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
676 | { | |
677 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
678 | if (priv->line_status & UART_DCD) | |
679 | return 1; | |
680 | return 0; | |
681 | } | |
682 | ||
824d11be | 683 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 684 | { |
824d11be | 685 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
686 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
687 | unsigned long flags; | |
688 | unsigned int prevstatus; | |
689 | unsigned int status; | |
690 | unsigned int changed; | |
691 | ||
372db8a7 | 692 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 693 | prevstatus = priv->line_status; |
372db8a7 | 694 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
695 | |
696 | while (1) { | |
6d0cad65 | 697 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
698 | /* see if a signal did it */ |
699 | if (signal_pending(current)) | |
700 | return -ERESTARTSYS; | |
372db8a7 | 701 | |
40509ca9 JH |
702 | if (port->serial->disconnected) |
703 | return -EIO; | |
704 | ||
372db8a7 | 705 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 706 | status = priv->line_status; |
372db8a7 TG |
707 | spin_unlock_irqrestore(&priv->lock, flags); |
708 | ||
3a0f43e9 | 709 | changed = prevstatus ^ status; |
372db8a7 | 710 | |
1da177e4 LT |
711 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
712 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
713 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 714 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
715 | return 0; |
716 | } | |
717 | prevstatus = status; | |
718 | } | |
719 | /* NOTREACHED */ | |
720 | return 0; | |
721 | } | |
722 | ||
00a0d0d6 | 723 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 724 | unsigned int cmd, unsigned long arg) |
1da177e4 | 725 | { |
67b9946d | 726 | struct serial_struct ser; |
95da310e | 727 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
728 | |
729 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
730 | |
731 | switch (cmd) { | |
67b9946d JT |
732 | case TIOCGSERIAL: |
733 | memset(&ser, 0, sizeof ser); | |
734 | ser.type = PORT_16654; | |
e5b1e206 | 735 | ser.line = port->minor; |
1143832e | 736 | ser.port = port->port_number; |
67b9946d JT |
737 | ser.baud_base = 460800; |
738 | ||
739 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
740 | return -EFAULT; | |
741 | ||
742 | return 0; | |
3a0f43e9 | 743 | default: |
d8789b2b | 744 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 745 | break; |
1da177e4 | 746 | } |
1da177e4 LT |
747 | return -ENOIOCTLCMD; |
748 | } | |
749 | ||
95da310e | 750 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 751 | { |
95da310e | 752 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
753 | struct usb_serial *serial = port->serial; |
754 | u16 state; | |
755 | int result; | |
756 | ||
1da177e4 LT |
757 | if (break_state == 0) |
758 | state = BREAK_OFF; | |
759 | else | |
760 | state = BREAK_ON; | |
d8789b2b | 761 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 762 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 763 | |
372db8a7 TG |
764 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
765 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
766 | 0, NULL, 0, 100); | |
1da177e4 | 767 | if (result) |
d8789b2b | 768 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
769 | } |
770 | ||
97bb13ec FL |
771 | static void pl2303_update_line_status(struct usb_serial_port *port, |
772 | unsigned char *data, | |
773 | unsigned int actual_length) | |
774 | { | |
775 | ||
776 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 777 | struct tty_struct *tty; |
97bb13ec FL |
778 | unsigned long flags; |
779 | u8 status_idx = UART_STATE; | |
95f209f9 | 780 | u8 length = UART_STATE + 1; |
d14fc1a7 | 781 | u8 prev_line_status; |
9c537616 | 782 | u16 idv, idp; |
97bb13ec | 783 | |
9c537616 TG |
784 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
785 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
786 | ||
787 | ||
788 | if (idv == SIEMENS_VENDOR_ID) { | |
789 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
790 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
791 | idp == SIEMENS_PRODUCT_ID_X75) { | |
792 | ||
793 | length = 1; | |
794 | status_idx = 0; | |
795 | } | |
97bb13ec FL |
796 | } |
797 | ||
798 | if (actual_length < length) | |
a009b75a | 799 | return; |
97bb13ec | 800 | |
3a0f43e9 | 801 | /* Save off the uart status for others to look at */ |
97bb13ec | 802 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 803 | prev_line_status = priv->line_status; |
97bb13ec FL |
804 | priv->line_status = data[status_idx]; |
805 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
806 | if (priv->line_status & UART_BREAK_ERROR) |
807 | usb_serial_handle_break(port); | |
6d0cad65 | 808 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
809 | |
810 | tty = tty_port_tty_get(&port->port); | |
811 | if (!tty) | |
812 | return; | |
813 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
814 | usb_serial_handle_dcd_change(port, tty, | |
815 | priv->line_status & UART_DCD); | |
816 | tty_kref_put(tty); | |
97bb13ec | 817 | } |
1da177e4 | 818 | |
7d12e780 | 819 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 820 | { |
cdc97792 | 821 | struct usb_serial_port *port = urb->context; |
1da177e4 | 822 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 823 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
824 | int status = urb->status; |
825 | int retval; | |
1da177e4 | 826 | |
461d696a | 827 | switch (status) { |
1da177e4 LT |
828 | case 0: |
829 | /* success */ | |
830 | break; | |
831 | case -ECONNRESET: | |
832 | case -ENOENT: | |
833 | case -ESHUTDOWN: | |
834 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
835 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
836 | __func__, status); | |
1da177e4 LT |
837 | return; |
838 | default: | |
d8789b2b GKH |
839 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
840 | __func__, status); | |
1da177e4 LT |
841 | goto exit; |
842 | } | |
843 | ||
59d33f2f | 844 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
845 | urb->actual_length, urb->transfer_buffer); |
846 | ||
97bb13ec | 847 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 848 | |
1da177e4 | 849 | exit: |
461d696a GKH |
850 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
851 | if (retval) | |
d8789b2b | 852 | dev_err(&port->dev, |
372db8a7 | 853 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 854 | __func__, retval); |
1da177e4 LT |
855 | } |
856 | ||
f08e07ac | 857 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 858 | { |
f08e07ac JH |
859 | struct usb_serial_port *port = urb->context; |
860 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 861 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 862 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
863 | unsigned long flags; |
864 | u8 line_status; | |
865 | int i; | |
866 | ||
867 | /* update line status */ | |
868 | spin_lock_irqsave(&priv->lock, flags); | |
869 | line_status = priv->line_status; | |
870 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
871 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 872 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
873 | |
874 | if (!urb->actual_length) | |
875 | return; | |
876 | ||
d4fc4a7b AC |
877 | /* break takes precedence over parity, */ |
878 | /* which takes precedence over framing errors */ | |
879 | if (line_status & UART_BREAK_ERROR) | |
880 | tty_flag = TTY_BREAK; | |
881 | else if (line_status & UART_PARITY_ERROR) | |
882 | tty_flag = TTY_PARITY; | |
883 | else if (line_status & UART_FRAME_ERROR) | |
884 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 885 | |
3ba19fe3 JH |
886 | if (tty_flag != TTY_NORMAL) |
887 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
888 | tty_flag); | |
d4fc4a7b AC |
889 | /* overrun is special, not associated with a char */ |
890 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 891 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 892 | |
d45cc8df | 893 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 894 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 895 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
896 | tty_insert_flip_char(&port->port, data[i], |
897 | tty_flag); | |
d45cc8df | 898 | } else { |
2f693357 | 899 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 900 | urb->actual_length); |
9388e2e7 | 901 | } |
1da177e4 | 902 | |
2e124b4a | 903 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
904 | } |
905 | ||
572d3138 TG |
906 | /* All of the device info needed for the PL2303 SIO serial converter */ |
907 | static struct usb_serial_driver pl2303_device = { | |
908 | .driver = { | |
909 | .owner = THIS_MODULE, | |
910 | .name = "pl2303", | |
911 | }, | |
912 | .id_table = id_table, | |
572d3138 | 913 | .num_ports = 1, |
7919c2fd | 914 | .bulk_in_size = 256, |
3efeaff6 | 915 | .bulk_out_size = 256, |
572d3138 TG |
916 | .open = pl2303_open, |
917 | .close = pl2303_close, | |
335f8514 AC |
918 | .dtr_rts = pl2303_dtr_rts, |
919 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
920 | .ioctl = pl2303_ioctl, |
921 | .break_ctl = pl2303_break_ctl, | |
922 | .set_termios = pl2303_set_termios, | |
923 | .tiocmget = pl2303_tiocmget, | |
924 | .tiocmset = pl2303_tiocmset, | |
824d11be | 925 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 926 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 927 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 928 | .attach = pl2303_startup, |
f9c99bb8 | 929 | .release = pl2303_release, |
8bf769eb JH |
930 | .port_probe = pl2303_port_probe, |
931 | .port_remove = pl2303_port_remove, | |
572d3138 | 932 | }; |
1da177e4 | 933 | |
f667ddad AS |
934 | static struct usb_serial_driver * const serial_drivers[] = { |
935 | &pl2303_device, NULL | |
936 | }; | |
937 | ||
68e24113 | 938 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
939 | |
940 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 941 | MODULE_LICENSE("GPL"); |