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 { | |
034d1527 FS |
137 | type_0, /* H version ? */ |
138 | type_1, /* H version ? */ | |
139 | HX_TA, /* HX(A) / X(A) / TA version */ /* TODO: improve */ | |
140 | HXD_EA_RA_SA, /* HXD / EA / RA / SA version */ /* TODO: improve */ | |
141 | TB, /* TB version */ | |
7d26a78f | 142 | HX_CLONE, /* Cheap and less functional clone of the HX chip */ |
1da177e4 | 143 | }; |
034d1527 FS |
144 | /* |
145 | * NOTE: don't know the difference between type 0 and type 1, | |
146 | * until someone from Prolific tells us... | |
147 | * TODO: distinguish between X/HX, TA and HXD, EA, RA, SA variants | |
148 | */ | |
1da177e4 | 149 | |
8bf769eb JH |
150 | struct pl2303_serial_private { |
151 | enum pl2303_type type; | |
152 | }; | |
153 | ||
1da177e4 LT |
154 | struct pl2303_private { |
155 | spinlock_t lock; | |
1da177e4 LT |
156 | u8 line_control; |
157 | u8 line_status; | |
1da177e4 LT |
158 | }; |
159 | ||
eb44da0b SS |
160 | static int pl2303_vendor_read(__u16 value, __u16 index, |
161 | struct usb_serial *serial, unsigned char *buf) | |
162 | { | |
163 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
164 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
165 | value, index, buf, 1, 100); | |
7b5789a8 | 166 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", |
d8789b2b GKH |
167 | VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index, |
168 | res, buf[0]); | |
eb44da0b SS |
169 | return res; |
170 | } | |
171 | ||
172 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
173 | struct usb_serial *serial) | |
174 | { | |
175 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
176 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
177 | value, index, NULL, 0, 100); | |
7b5789a8 | 178 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n", |
d8789b2b GKH |
179 | VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index, |
180 | res); | |
eb44da0b SS |
181 | return res; |
182 | } | |
183 | ||
372db8a7 | 184 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 185 | { |
8bf769eb | 186 | struct pl2303_serial_private *spriv; |
1da177e4 | 187 | enum pl2303_type type = type_0; |
a77a8c23 | 188 | char *type_str = "unknown (treating as type_0)"; |
3e152505 | 189 | unsigned char *buf; |
8bf769eb JH |
190 | |
191 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
192 | if (!spriv) | |
193 | return -ENOMEM; | |
1da177e4 | 194 | |
3e152505 | 195 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
196 | if (!buf) { |
197 | kfree(spriv); | |
3e152505 | 198 | return -ENOMEM; |
8bf769eb | 199 | } |
3e152505 | 200 | |
a77a8c23 | 201 | if (serial->dev->descriptor.bDeviceClass == 0x02) { |
1da177e4 | 202 | type = type_0; |
a77a8c23 FS |
203 | type_str = "type_0"; |
204 | } else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) { | |
034d1527 FS |
205 | /* |
206 | * NOTE: The bcdDevice version is the only difference between | |
207 | * the device descriptors of the X/HX, HXD, EA, RA, SA, TA, TB | |
208 | */ | |
209 | if (le16_to_cpu(serial->dev->descriptor.bcdDevice) == 0x300) { | |
7d26a78f FS |
210 | /* Check if the device is a clone */ |
211 | pl2303_vendor_read(0x9494, 0, serial, buf); | |
212 | /* | |
213 | * NOTE: Not sure if this read is really needed. | |
214 | * The HX returns 0x00, the clone 0x02, but the Windows | |
215 | * driver seems to ignore the value and continues. | |
216 | */ | |
217 | pl2303_vendor_write(0x0606, 0xaa, serial); | |
218 | pl2303_vendor_read(0x8686, 0, serial, buf); | |
219 | if (buf[0] != 0xaa) { | |
220 | type = HX_CLONE; | |
221 | type_str = "X/HX clone (limited functionality)"; | |
222 | } else { | |
223 | type = HX_TA; | |
224 | type_str = "X/HX/TA"; | |
225 | } | |
226 | pl2303_vendor_write(0x0606, 0x00, serial); | |
034d1527 FS |
227 | } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice) |
228 | == 0x400) { | |
229 | type = HXD_EA_RA_SA; | |
230 | type_str = "HXD/EA/RA/SA"; | |
231 | } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice) | |
232 | == 0x500) { | |
233 | type = TB; | |
234 | type_str = "TB"; | |
235 | } else { | |
236 | dev_info(&serial->interface->dev, | |
237 | "unknown/unsupported device type\n"); | |
238 | kfree(spriv); | |
239 | kfree(buf); | |
240 | return -ENODEV; | |
241 | } | |
a77a8c23 FS |
242 | } else if (serial->dev->descriptor.bDeviceClass == 0x00 |
243 | || serial->dev->descriptor.bDeviceClass == 0xFF) { | |
1da177e4 | 244 | type = type_1; |
a77a8c23 FS |
245 | type_str = "type_1"; |
246 | } | |
247 | dev_dbg(&serial->interface->dev, "device type: %s\n", type_str); | |
1da177e4 | 248 | |
8bf769eb JH |
249 | spriv->type = type; |
250 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
251 | |
252 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
253 | pl2303_vendor_write(0x0404, 0, serial); | |
254 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
255 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
256 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
257 | pl2303_vendor_write(0x0404, 1, serial); | |
258 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
259 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
260 | pl2303_vendor_write(0, 1, serial); | |
261 | pl2303_vendor_write(1, 0, serial); | |
034d1527 | 262 | if (type == type_0 || type == type_1) |
3e152505 | 263 | pl2303_vendor_write(2, 0x24, serial); |
034d1527 FS |
264 | else |
265 | pl2303_vendor_write(2, 0x44, serial); | |
3e152505 SS |
266 | |
267 | kfree(buf); | |
1da177e4 | 268 | return 0; |
8bf769eb | 269 | } |
1da177e4 | 270 | |
8bf769eb JH |
271 | static void pl2303_release(struct usb_serial *serial) |
272 | { | |
273 | struct pl2303_serial_private *spriv; | |
274 | ||
275 | spriv = usb_get_serial_data(serial); | |
276 | kfree(spriv); | |
277 | } | |
278 | ||
279 | static int pl2303_port_probe(struct usb_serial_port *port) | |
280 | { | |
281 | struct pl2303_private *priv; | |
282 | ||
283 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
284 | if (!priv) | |
285 | return -ENOMEM; | |
286 | ||
287 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
288 | |
289 | usb_set_serial_port_data(port, priv); | |
290 | ||
d7be6221 JH |
291 | port->port.drain_delay = 256; |
292 | ||
8bf769eb JH |
293 | return 0; |
294 | } | |
295 | ||
296 | static int pl2303_port_remove(struct usb_serial_port *port) | |
297 | { | |
298 | struct pl2303_private *priv; | |
299 | ||
300 | priv = usb_get_serial_port_data(port); | |
301 | kfree(priv); | |
302 | ||
303 | return 0; | |
1da177e4 LT |
304 | } |
305 | ||
f45d0a5a | 306 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 307 | { |
f45d0a5a | 308 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 309 | int retval; |
3a0f43e9 | 310 | |
372db8a7 TG |
311 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
312 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
313 | value, 0, NULL, 0, 100); | |
f45d0a5a | 314 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 315 | value, retval); |
1da177e4 LT |
316 | return retval; |
317 | } | |
318 | ||
e917ba01 FS |
319 | static int pl2303_baudrate_encode_direct(int baud, enum pl2303_type type, |
320 | u8 buf[4]) | |
321 | { | |
322 | /* | |
323 | * NOTE: Only the values defined in baud_sup are supported ! | |
7d26a78f FS |
324 | * => if unsupported values are set, the PL2303 uses 9600 baud instead |
325 | * => HX clones just don't work at unsupported baud rates < 115200 baud, | |
326 | * for baud rates > 115200 they run at 115200 baud | |
e917ba01 FS |
327 | */ |
328 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, | |
329 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
330 | 57600, 115200, 230400, 460800, 614400, 921600, | |
034d1527 | 331 | 1228800, 2457600, 3000000, 6000000, 12000000 }; |
c23bda36 | 332 | /* |
034d1527 FS |
333 | * NOTE: With the exception of type_0/1 devices, the following |
334 | * additional baud rates are supported (tested with HX rev. 3A only): | |
335 | * 110*, 56000*, 128000, 134400, 161280, 201600, 256000*, 268800, | |
7d26a78f | 336 | * 403200, 806400. (*: not HX and HX clones) |
034d1527 FS |
337 | * |
338 | * Maximum values: HXD, TB: 12000000; HX, TA: 6000000; | |
7d26a78f | 339 | * type_0+1: 1228800; RA: 921600; HX clones, SA: 115200 |
034d1527 FS |
340 | * |
341 | * As long as we are not using this encoding method for anything else | |
7d26a78f FS |
342 | * than the type_0+1, HX and HX clone chips, there is no point in |
343 | * complicating the code to support them. | |
c23bda36 | 344 | */ |
e917ba01 FS |
345 | int i; |
346 | ||
347 | /* Set baudrate to nearest supported value */ | |
348 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { | |
349 | if (baud_sup[i] > baud) | |
350 | break; | |
351 | } | |
352 | if (i == ARRAY_SIZE(baud_sup)) | |
353 | baud = baud_sup[i - 1]; | |
354 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
355 | baud = baud_sup[i - 1]; | |
356 | else | |
357 | baud = baud_sup[i]; | |
034d1527 FS |
358 | /* Respect the chip type specific baud rate limits */ |
359 | /* | |
360 | * FIXME: as long as we don't know how to distinguish between the | |
361 | * HXD, EA, RA, and SA chip variants, allow the max. value of 12M. | |
362 | */ | |
363 | if (type == HX_TA) | |
364 | baud = min_t(int, baud, 6000000); | |
365 | else if (type == type_0 || type == type_1) | |
e917ba01 | 366 | baud = min_t(int, baud, 1228800); |
7d26a78f FS |
367 | else if (type == HX_CLONE) |
368 | baud = min_t(int, baud, 115200); | |
e917ba01 FS |
369 | /* Direct (standard) baud rate encoding method */ |
370 | put_unaligned_le32(baud, buf); | |
371 | ||
372 | return baud; | |
373 | } | |
374 | ||
375 | static int pl2303_baudrate_encode_divisor(int baud, enum pl2303_type type, | |
376 | u8 buf[4]) | |
377 | { | |
378 | /* | |
379 | * Divisor based baud rate encoding method | |
380 | * | |
7d26a78f FS |
381 | * NOTE: HX clones do NOT support this method. |
382 | * It's not clear if the type_0/1 chips support it. | |
e917ba01 FS |
383 | * |
384 | * divisor = 12MHz * 32 / baudrate = 2^A * B | |
385 | * | |
386 | * with | |
387 | * | |
388 | * A = buf[1] & 0x0e | |
389 | * B = buf[0] + (buf[1] & 0x01) << 8 | |
390 | * | |
391 | * Special cases: | |
392 | * => 8 < B < 16: device seems to work not properly | |
393 | * => B <= 8: device uses the max. value B = 512 instead | |
394 | */ | |
395 | unsigned int A, B; | |
396 | ||
b5c16c6a FS |
397 | /* |
398 | * NOTE: The Windows driver allows maximum baud rates of 110% of the | |
399 | * specified maximium value. | |
400 | * Quick tests with early (2004) HX (rev. A) chips suggest, that even | |
401 | * higher baud rates (up to the maximum of 24M baud !) are working fine, | |
402 | * but that should really be tested carefully in "real life" scenarios | |
403 | * before removing the upper limit completely. | |
404 | * Baud rates smaller than the specified 75 baud are definitely working | |
405 | * fine. | |
406 | */ | |
034d1527 | 407 | if (type == type_0 || type == type_1) |
b5c16c6a | 408 | baud = min_t(int, baud, 1228800 * 1.1); |
034d1527 FS |
409 | else if (type == HX_TA) |
410 | baud = min_t(int, baud, 6000000 * 1.1); | |
411 | else if (type == HXD_EA_RA_SA) | |
412 | /* HXD, EA: 12Mbps; RA: 1Mbps; SA: 115200 bps */ | |
413 | /* | |
414 | * FIXME: as long as we don't know how to distinguish between | |
415 | * these chip variants, allow the max. of these values | |
416 | */ | |
417 | baud = min_t(int, baud, 12000000 * 1.1); | |
418 | else if (type == TB) | |
419 | baud = min_t(int, baud, 12000000 * 1.1); | |
e917ba01 FS |
420 | /* Determine factors A and B */ |
421 | A = 0; | |
422 | B = 12000000 * 32 / baud; /* 12MHz */ | |
423 | B <<= 1; /* Add one bit for rounding */ | |
424 | while (B > (512 << 1) && A <= 14) { | |
425 | A += 2; | |
426 | B >>= 2; | |
427 | } | |
428 | if (A > 14) { /* max. divisor = min. baudrate reached */ | |
429 | A = 14; | |
430 | B = 512; | |
431 | /* => ~45.78 baud */ | |
432 | } else { | |
433 | B = (B + 1) >> 1; /* Round the last bit */ | |
434 | } | |
435 | /* Handle special cases */ | |
436 | if (B == 512) | |
437 | B = 0; /* also: 1 to 8 */ | |
438 | else if (B < 16) | |
439 | /* | |
440 | * NOTE: With the current algorithm this happens | |
441 | * only for A=0 and means that the min. divisor | |
442 | * (respectively: the max. baudrate) is reached. | |
443 | */ | |
444 | B = 16; /* => 24 MBaud */ | |
445 | /* Encode the baud rate */ | |
446 | buf[3] = 0x80; /* Select divisor encoding method */ | |
447 | buf[2] = 0; | |
448 | buf[1] = (A & 0x0e); /* A */ | |
449 | buf[1] |= ((B & 0x100) >> 8); /* MSB of B */ | |
450 | buf[0] = B & 0xff; /* 8 LSBs of B */ | |
451 | /* Calculate the actual/resulting baud rate */ | |
452 | if (B <= 8) | |
453 | B = 512; | |
454 | baud = 12000000 * 32 / ((1 << A) * B); | |
455 | ||
456 | return baud; | |
457 | } | |
458 | ||
15e7cead JH |
459 | static void pl2303_encode_baudrate(struct tty_struct *tty, |
460 | struct usb_serial_port *port, | |
e917ba01 | 461 | enum pl2303_type type, |
15e7cead | 462 | u8 buf[4]) |
1da177e4 | 463 | { |
15e7cead | 464 | int baud; |
1da177e4 | 465 | |
95da310e | 466 | baud = tty_get_baud_rate(tty); |
d8789b2b | 467 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
b2d6d98f JH |
468 | if (!baud) |
469 | return; | |
e917ba01 FS |
470 | /* |
471 | * There are two methods for setting/encoding the baud rate | |
472 | * 1) Direct method: encodes the baud rate value directly | |
473 | * => supported by all chip types | |
474 | * 2) Divisor based method: encodes a divisor to a base value (12MHz*32) | |
7d26a78f | 475 | * => not supported by HX clones (and likely type_0/1 chips) |
c23bda36 FS |
476 | * |
477 | * NOTE: Although the divisor based baud rate encoding method is much | |
478 | * more flexible, some of the standard baud rate values can not be | |
479 | * realized exactly. But the difference is very small (max. 0.2%) and | |
480 | * the device likely uses the same baud rate generator for both methods | |
481 | * so that there is likley no difference. | |
e917ba01 | 482 | */ |
7d26a78f | 483 | if (type == type_0 || type == type_1 || type == HX_CLONE) |
e917ba01 FS |
484 | baud = pl2303_baudrate_encode_direct(baud, type, buf); |
485 | else | |
486 | baud = pl2303_baudrate_encode_divisor(baud, type, buf); | |
15e7cead | 487 | /* Save resulting baud rate */ |
b2d6d98f JH |
488 | tty_encode_baud_rate(tty, baud, baud); |
489 | dev_dbg(&port->dev, "baud set = %d\n", baud); | |
15e7cead JH |
490 | } |
491 | ||
492 | static void pl2303_set_termios(struct tty_struct *tty, | |
493 | struct usb_serial_port *port, struct ktermios *old_termios) | |
494 | { | |
495 | struct usb_serial *serial = port->serial; | |
496 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
497 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
498 | unsigned long flags; | |
15e7cead JH |
499 | unsigned char *buf; |
500 | int i; | |
501 | u8 control; | |
502 | ||
87265b45 JH |
503 | /* |
504 | * The PL2303 is reported to lose bytes if you change serial settings | |
505 | * even to the same values as before. Thus we actually need to filter | |
506 | * in this specific case. | |
507 | */ | |
15e7cead JH |
508 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
509 | return; | |
510 | ||
15e7cead JH |
511 | buf = kzalloc(7, GFP_KERNEL); |
512 | if (!buf) { | |
513 | dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
514 | /* Report back no change occurred */ | |
515 | if (old_termios) | |
516 | tty->termios = *old_termios; | |
517 | return; | |
518 | } | |
519 | ||
520 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
521 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
522 | 0, 0, buf, 7, 100); | |
523 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); | |
524 | ||
87265b45 JH |
525 | if (C_CSIZE(tty)) { |
526 | switch (C_CSIZE(tty)) { | |
15e7cead JH |
527 | case CS5: |
528 | buf[6] = 5; | |
529 | break; | |
530 | case CS6: | |
531 | buf[6] = 6; | |
532 | break; | |
533 | case CS7: | |
534 | buf[6] = 7; | |
535 | break; | |
536 | default: | |
537 | case CS8: | |
538 | buf[6] = 8; | |
15e7cead JH |
539 | } |
540 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); | |
541 | } | |
542 | ||
e917ba01 FS |
543 | /* For reference: buf[0]:buf[3] baud rate value */ |
544 | pl2303_encode_baudrate(tty, port, spriv->type, buf); | |
15e7cead | 545 | |
1da177e4 LT |
546 | /* For reference buf[4]=0 is 1 stop bits */ |
547 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
548 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
549 | if (C_CSTOPB(tty)) { |
550 | /* | |
551 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
552 | * use 1.5 instead of 2 stop bits with 5 data bits |
553 | */ | |
87265b45 | 554 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 555 | buf[4] = 1; |
d8789b2b | 556 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
557 | } else { |
558 | buf[4] = 2; | |
d8789b2b | 559 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 560 | } |
1da177e4 LT |
561 | } else { |
562 | buf[4] = 0; | |
d8789b2b | 563 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
564 | } |
565 | ||
87265b45 | 566 | if (C_PARENB(tty)) { |
1da177e4 LT |
567 | /* For reference buf[5]=0 is none parity */ |
568 | /* For reference buf[5]=1 is odd parity */ | |
569 | /* For reference buf[5]=2 is even parity */ | |
570 | /* For reference buf[5]=3 is mark parity */ | |
571 | /* For reference buf[5]=4 is space parity */ | |
87265b45 JH |
572 | if (C_PARODD(tty)) { |
573 | if (tty->termios.c_cflag & CMSPAR) { | |
6dd81b45 | 574 | buf[5] = 3; |
d8789b2b | 575 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
576 | } else { |
577 | buf[5] = 1; | |
d8789b2b | 578 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 579 | } |
1da177e4 | 580 | } else { |
87265b45 | 581 | if (tty->termios.c_cflag & CMSPAR) { |
6dd81b45 | 582 | buf[5] = 4; |
d8789b2b | 583 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
584 | } else { |
585 | buf[5] = 2; | |
d8789b2b | 586 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 587 | } |
1da177e4 LT |
588 | } |
589 | } else { | |
590 | buf[5] = 0; | |
d8789b2b | 591 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
592 | } |
593 | ||
372db8a7 TG |
594 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
595 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
596 | 0, 0, buf, 7, 100); | |
d8789b2b | 597 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); |
1da177e4 LT |
598 | |
599 | /* change control lines if we are switching to or from B0 */ | |
600 | spin_lock_irqsave(&priv->lock, flags); | |
601 | control = priv->line_control; | |
87265b45 | 602 | if (C_BAUD(tty) == B0) |
1da177e4 | 603 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 604 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
605 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
606 | if (control != priv->line_control) { | |
607 | control = priv->line_control; | |
608 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 609 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
610 | } else { |
611 | spin_unlock_irqrestore(&priv->lock, flags); | |
612 | } | |
372db8a7 | 613 | |
87265b45 | 614 | memset(buf, 0, 7); |
372db8a7 TG |
615 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
616 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
617 | 0, 0, buf, 7, 100); | |
715cf92a | 618 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 | 619 | |
87265b45 | 620 | if (C_CRTSCTS(tty)) { |
034d1527 | 621 | if (spriv->type == type_0 || spriv->type == type_1) |
eb44da0b | 622 | pl2303_vendor_write(0x0, 0x41, serial); |
034d1527 FS |
623 | else |
624 | pl2303_vendor_write(0x0, 0x61, serial); | |
715f9527 | 625 | } else { |
eb44da0b | 626 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 627 | } |
572d3138 TG |
628 | |
629 | kfree(buf); | |
630 | } | |
631 | ||
335f8514 AC |
632 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
633 | { | |
634 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
635 | unsigned long flags; | |
636 | u8 control; | |
637 | ||
638 | spin_lock_irqsave(&priv->lock, flags); | |
639 | /* Change DTR and RTS */ | |
640 | if (on) | |
641 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
642 | else | |
643 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
644 | control = priv->line_control; | |
645 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 646 | pl2303_set_control_lines(port, control); |
335f8514 AC |
647 | } |
648 | ||
649 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 650 | { |
8b0127b2 | 651 | usb_serial_generic_close(port); |
572d3138 | 652 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
653 | } |
654 | ||
a509a7e4 | 655 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 656 | { |
1da177e4 | 657 | struct usb_serial *serial = port->serial; |
8bf769eb | 658 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
659 | int result; |
660 | ||
034d1527 | 661 | if (spriv->type == type_0 || spriv->type == type_1) { |
1694899f D |
662 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
663 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 664 | } else { |
1da177e4 | 665 | /* reset upstream data pipes */ |
eb44da0b SS |
666 | pl2303_vendor_write(8, 0, serial); |
667 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
668 | } |
669 | ||
1da177e4 | 670 | /* Setup termios */ |
95da310e | 671 | if (tty) |
2d8f4447 | 672 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 673 | |
372db8a7 | 674 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 675 | if (result) { |
372db8a7 | 676 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 677 | " error %d\n", __func__, result); |
db6e9186 | 678 | return result; |
1da177e4 | 679 | } |
d4691c3f | 680 | |
f5230a53 | 681 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
682 | if (result) { |
683 | usb_kill_urb(port->interrupt_in_urb); | |
684 | return result; | |
685 | } | |
686 | ||
1da177e4 LT |
687 | return 0; |
688 | } | |
689 | ||
20b9d177 | 690 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 691 | unsigned int set, unsigned int clear) |
1da177e4 | 692 | { |
95da310e | 693 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
694 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
695 | unsigned long flags; | |
696 | u8 control; | |
6f1efd6c | 697 | int ret; |
6fdd8e8e | 698 | |
372db8a7 | 699 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
700 | if (set & TIOCM_RTS) |
701 | priv->line_control |= CONTROL_RTS; | |
702 | if (set & TIOCM_DTR) | |
703 | priv->line_control |= CONTROL_DTR; | |
704 | if (clear & TIOCM_RTS) | |
705 | priv->line_control &= ~CONTROL_RTS; | |
706 | if (clear & TIOCM_DTR) | |
707 | priv->line_control &= ~CONTROL_DTR; | |
708 | control = priv->line_control; | |
372db8a7 | 709 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 710 | |
5ddbb26b JH |
711 | ret = pl2303_set_control_lines(port, control); |
712 | if (ret) | |
713 | return usb_translate_errors(ret); | |
6f1efd6c | 714 | |
5ddbb26b | 715 | return 0; |
1da177e4 LT |
716 | } |
717 | ||
60b33c13 | 718 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 719 | { |
95da310e | 720 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
721 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
722 | unsigned long flags; | |
723 | unsigned int mcr; | |
724 | unsigned int status; | |
725 | unsigned int result; | |
726 | ||
372db8a7 | 727 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
728 | mcr = priv->line_control; |
729 | status = priv->line_status; | |
372db8a7 | 730 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
731 | |
732 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
733 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
734 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
735 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
736 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
737 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
738 | ||
d8789b2b | 739 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
740 | |
741 | return result; | |
742 | } | |
743 | ||
335f8514 AC |
744 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
745 | { | |
746 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
747 | if (priv->line_status & UART_DCD) | |
748 | return 1; | |
749 | return 0; | |
750 | } | |
751 | ||
824d11be | 752 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 753 | { |
824d11be | 754 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
755 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
756 | unsigned long flags; | |
757 | unsigned int prevstatus; | |
758 | unsigned int status; | |
759 | unsigned int changed; | |
760 | ||
372db8a7 | 761 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 762 | prevstatus = priv->line_status; |
372db8a7 | 763 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
764 | |
765 | while (1) { | |
6d0cad65 | 766 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
767 | /* see if a signal did it */ |
768 | if (signal_pending(current)) | |
769 | return -ERESTARTSYS; | |
372db8a7 | 770 | |
40509ca9 JH |
771 | if (port->serial->disconnected) |
772 | return -EIO; | |
773 | ||
372db8a7 | 774 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 775 | status = priv->line_status; |
372db8a7 TG |
776 | spin_unlock_irqrestore(&priv->lock, flags); |
777 | ||
3a0f43e9 | 778 | changed = prevstatus ^ status; |
372db8a7 | 779 | |
1da177e4 LT |
780 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
781 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
782 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 783 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
784 | return 0; |
785 | } | |
786 | prevstatus = status; | |
787 | } | |
788 | /* NOTREACHED */ | |
789 | return 0; | |
790 | } | |
791 | ||
00a0d0d6 | 792 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 793 | unsigned int cmd, unsigned long arg) |
1da177e4 | 794 | { |
67b9946d | 795 | struct serial_struct ser; |
95da310e | 796 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
797 | |
798 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
799 | |
800 | switch (cmd) { | |
67b9946d JT |
801 | case TIOCGSERIAL: |
802 | memset(&ser, 0, sizeof ser); | |
803 | ser.type = PORT_16654; | |
e5b1e206 | 804 | ser.line = port->minor; |
1143832e | 805 | ser.port = port->port_number; |
67b9946d JT |
806 | ser.baud_base = 460800; |
807 | ||
808 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
809 | return -EFAULT; | |
810 | ||
811 | return 0; | |
3a0f43e9 | 812 | default: |
d8789b2b | 813 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 814 | break; |
1da177e4 | 815 | } |
1da177e4 LT |
816 | return -ENOIOCTLCMD; |
817 | } | |
818 | ||
95da310e | 819 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 820 | { |
95da310e | 821 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
822 | struct usb_serial *serial = port->serial; |
823 | u16 state; | |
824 | int result; | |
825 | ||
1da177e4 LT |
826 | if (break_state == 0) |
827 | state = BREAK_OFF; | |
828 | else | |
829 | state = BREAK_ON; | |
d8789b2b | 830 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 831 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 832 | |
372db8a7 TG |
833 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
834 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
835 | 0, NULL, 0, 100); | |
7d26a78f | 836 | /* NOTE: HX clones don't support sending breaks, -EPIPE is returned */ |
1da177e4 | 837 | if (result) |
d8789b2b | 838 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
839 | } |
840 | ||
97bb13ec FL |
841 | static void pl2303_update_line_status(struct usb_serial_port *port, |
842 | unsigned char *data, | |
843 | unsigned int actual_length) | |
844 | { | |
845 | ||
846 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 847 | struct tty_struct *tty; |
97bb13ec FL |
848 | unsigned long flags; |
849 | u8 status_idx = UART_STATE; | |
95f209f9 | 850 | u8 length = UART_STATE + 1; |
d14fc1a7 | 851 | u8 prev_line_status; |
9c537616 | 852 | u16 idv, idp; |
97bb13ec | 853 | |
9c537616 TG |
854 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
855 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
856 | ||
857 | ||
858 | if (idv == SIEMENS_VENDOR_ID) { | |
859 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
860 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
861 | idp == SIEMENS_PRODUCT_ID_X75) { | |
862 | ||
863 | length = 1; | |
864 | status_idx = 0; | |
865 | } | |
97bb13ec FL |
866 | } |
867 | ||
868 | if (actual_length < length) | |
a009b75a | 869 | return; |
97bb13ec | 870 | |
3a0f43e9 | 871 | /* Save off the uart status for others to look at */ |
97bb13ec | 872 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 873 | prev_line_status = priv->line_status; |
97bb13ec FL |
874 | priv->line_status = data[status_idx]; |
875 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
876 | if (priv->line_status & UART_BREAK_ERROR) |
877 | usb_serial_handle_break(port); | |
6d0cad65 | 878 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
879 | |
880 | tty = tty_port_tty_get(&port->port); | |
881 | if (!tty) | |
882 | return; | |
883 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
884 | usb_serial_handle_dcd_change(port, tty, | |
885 | priv->line_status & UART_DCD); | |
886 | tty_kref_put(tty); | |
97bb13ec | 887 | } |
1da177e4 | 888 | |
7d12e780 | 889 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 890 | { |
cdc97792 | 891 | struct usb_serial_port *port = urb->context; |
1da177e4 | 892 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 893 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
894 | int status = urb->status; |
895 | int retval; | |
1da177e4 | 896 | |
461d696a | 897 | switch (status) { |
1da177e4 LT |
898 | case 0: |
899 | /* success */ | |
900 | break; | |
901 | case -ECONNRESET: | |
902 | case -ENOENT: | |
903 | case -ESHUTDOWN: | |
904 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
905 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
906 | __func__, status); | |
1da177e4 LT |
907 | return; |
908 | default: | |
d8789b2b GKH |
909 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
910 | __func__, status); | |
1da177e4 LT |
911 | goto exit; |
912 | } | |
913 | ||
59d33f2f | 914 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
915 | urb->actual_length, urb->transfer_buffer); |
916 | ||
97bb13ec | 917 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 918 | |
1da177e4 | 919 | exit: |
461d696a GKH |
920 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
921 | if (retval) | |
d8789b2b | 922 | dev_err(&port->dev, |
372db8a7 | 923 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 924 | __func__, retval); |
1da177e4 LT |
925 | } |
926 | ||
f08e07ac | 927 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 928 | { |
f08e07ac JH |
929 | struct usb_serial_port *port = urb->context; |
930 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 931 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 932 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
933 | unsigned long flags; |
934 | u8 line_status; | |
935 | int i; | |
936 | ||
937 | /* update line status */ | |
938 | spin_lock_irqsave(&priv->lock, flags); | |
939 | line_status = priv->line_status; | |
940 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
941 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 942 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
943 | |
944 | if (!urb->actual_length) | |
945 | return; | |
946 | ||
d4fc4a7b AC |
947 | /* break takes precedence over parity, */ |
948 | /* which takes precedence over framing errors */ | |
949 | if (line_status & UART_BREAK_ERROR) | |
950 | tty_flag = TTY_BREAK; | |
951 | else if (line_status & UART_PARITY_ERROR) | |
952 | tty_flag = TTY_PARITY; | |
953 | else if (line_status & UART_FRAME_ERROR) | |
954 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 955 | |
3ba19fe3 JH |
956 | if (tty_flag != TTY_NORMAL) |
957 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
958 | tty_flag); | |
d4fc4a7b AC |
959 | /* overrun is special, not associated with a char */ |
960 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 961 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 962 | |
d45cc8df | 963 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 964 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 965 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
966 | tty_insert_flip_char(&port->port, data[i], |
967 | tty_flag); | |
d45cc8df | 968 | } else { |
2f693357 | 969 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 970 | urb->actual_length); |
9388e2e7 | 971 | } |
1da177e4 | 972 | |
2e124b4a | 973 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
974 | } |
975 | ||
572d3138 TG |
976 | /* All of the device info needed for the PL2303 SIO serial converter */ |
977 | static struct usb_serial_driver pl2303_device = { | |
978 | .driver = { | |
979 | .owner = THIS_MODULE, | |
980 | .name = "pl2303", | |
981 | }, | |
982 | .id_table = id_table, | |
572d3138 | 983 | .num_ports = 1, |
7919c2fd | 984 | .bulk_in_size = 256, |
3efeaff6 | 985 | .bulk_out_size = 256, |
572d3138 TG |
986 | .open = pl2303_open, |
987 | .close = pl2303_close, | |
335f8514 AC |
988 | .dtr_rts = pl2303_dtr_rts, |
989 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
990 | .ioctl = pl2303_ioctl, |
991 | .break_ctl = pl2303_break_ctl, | |
992 | .set_termios = pl2303_set_termios, | |
993 | .tiocmget = pl2303_tiocmget, | |
994 | .tiocmset = pl2303_tiocmset, | |
824d11be | 995 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 996 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 997 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 998 | .attach = pl2303_startup, |
f9c99bb8 | 999 | .release = pl2303_release, |
8bf769eb JH |
1000 | .port_probe = pl2303_port_probe, |
1001 | .port_remove = pl2303_port_remove, | |
572d3138 | 1002 | }; |
1da177e4 | 1003 | |
f667ddad AS |
1004 | static struct usb_serial_driver * const serial_drivers[] = { |
1005 | &pl2303_device, NULL | |
1006 | }; | |
1007 | ||
68e24113 | 1008 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
1009 | |
1010 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1011 | MODULE_LICENSE("GPL"); |