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1da177e4 LT |
1 | /* |
2 | * Prolific PL2303 USB to serial adaptor driver | |
3 | * | |
4d0dce3e | 4 | * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) |
1da177e4 LT |
5 | * Copyright (C) 2003 IBM Corp. |
6 | * | |
7 | * Original driver for 2.2.x by anonymous | |
8 | * | |
4d0dce3e GKH |
9 | * This program is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU General Public License version | |
11 | * 2 as published by the Free Software Foundation. | |
1da177e4 | 12 | * |
3a0f43e9 AC |
13 | * See Documentation/usb/usb-serial.txt for more information on using this |
14 | * driver | |
1da177e4 | 15 | * |
1da177e4 LT |
16 | */ |
17 | ||
1da177e4 LT |
18 | #include <linux/kernel.h> |
19 | #include <linux/errno.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/tty.h> | |
23 | #include <linux/tty_driver.h> | |
24 | #include <linux/tty_flip.h> | |
25 | #include <linux/serial.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/spinlock.h> | |
3a0f43e9 | 29 | #include <linux/uaccess.h> |
1da177e4 | 30 | #include <linux/usb.h> |
a969888c | 31 | #include <linux/usb/serial.h> |
1da177e4 LT |
32 | #include "pl2303.h" |
33 | ||
34 | /* | |
35 | * Version Information | |
36 | */ | |
1da177e4 LT |
37 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
38 | ||
7d40d7e8 | 39 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
40 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
41 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 42 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
43 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
44 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 45 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
18344a1c | 48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
96a3e79e | 49 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
1da177e4 | 50 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 51 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
52 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
53 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
54 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
55 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
56 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 57 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
58 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
59 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
60 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
61 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
62 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
63 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
64 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
65 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 66 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 67 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 68 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 69 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 70 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 71 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
72 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
73 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 74 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 75 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 76 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 77 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 78 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 79 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 80 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 81 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 82 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 83 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 84 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 85 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 86 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 87 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 88 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 89 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
598f0b70 | 90 | { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, |
1da177e4 LT |
91 | { } /* Terminating entry */ |
92 | }; | |
93 | ||
372db8a7 | 94 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 95 | |
1da177e4 LT |
96 | #define SET_LINE_REQUEST_TYPE 0x21 |
97 | #define SET_LINE_REQUEST 0x20 | |
98 | ||
99 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
100 | #define SET_CONTROL_REQUEST 0x22 | |
101 | #define CONTROL_DTR 0x01 | |
102 | #define CONTROL_RTS 0x02 | |
103 | ||
104 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 105 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
106 | #define BREAK_ON 0xffff |
107 | #define BREAK_OFF 0x0000 | |
108 | ||
109 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
110 | #define GET_LINE_REQUEST 0x21 | |
111 | ||
112 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
113 | #define VENDOR_WRITE_REQUEST 0x01 | |
114 | ||
115 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
116 | #define VENDOR_READ_REQUEST 0x01 | |
117 | ||
118 | #define UART_STATE 0x08 | |
119 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
120 | #define UART_DCD 0x01 | |
121 | #define UART_DSR 0x02 | |
122 | #define UART_BREAK_ERROR 0x04 | |
123 | #define UART_RING 0x08 | |
124 | #define UART_FRAME_ERROR 0x10 | |
125 | #define UART_PARITY_ERROR 0x20 | |
126 | #define UART_OVERRUN_ERROR 0x40 | |
127 | #define UART_CTS 0x80 | |
128 | ||
1da177e4 LT |
129 | |
130 | enum pl2303_type { | |
131 | type_0, /* don't know the difference between type 0 and */ | |
132 | type_1, /* type 1, until someone from prolific tells us... */ | |
133 | HX, /* HX version of the pl2303 chip */ | |
134 | }; | |
135 | ||
8bf769eb JH |
136 | struct pl2303_serial_private { |
137 | enum pl2303_type type; | |
138 | }; | |
139 | ||
1da177e4 LT |
140 | struct pl2303_private { |
141 | spinlock_t lock; | |
1da177e4 LT |
142 | u8 line_control; |
143 | u8 line_status; | |
1da177e4 LT |
144 | }; |
145 | ||
eb44da0b SS |
146 | static int pl2303_vendor_read(__u16 value, __u16 index, |
147 | struct usb_serial *serial, unsigned char *buf) | |
148 | { | |
149 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
150 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
151 | value, index, buf, 1, 100); | |
7b5789a8 | 152 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", |
d8789b2b GKH |
153 | VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index, |
154 | res, buf[0]); | |
eb44da0b SS |
155 | return res; |
156 | } | |
157 | ||
158 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
159 | struct usb_serial *serial) | |
160 | { | |
161 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
162 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
163 | value, index, NULL, 0, 100); | |
7b5789a8 | 164 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n", |
d8789b2b GKH |
165 | VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index, |
166 | res); | |
eb44da0b SS |
167 | return res; |
168 | } | |
169 | ||
372db8a7 | 170 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 171 | { |
8bf769eb | 172 | struct pl2303_serial_private *spriv; |
1da177e4 | 173 | enum pl2303_type type = type_0; |
3e152505 | 174 | unsigned char *buf; |
8bf769eb JH |
175 | |
176 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
177 | if (!spriv) | |
178 | return -ENOMEM; | |
1da177e4 | 179 | |
3e152505 | 180 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
181 | if (!buf) { |
182 | kfree(spriv); | |
3e152505 | 183 | return -ENOMEM; |
8bf769eb | 184 | } |
3e152505 | 185 | |
1da177e4 LT |
186 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
187 | type = type_0; | |
188 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
189 | type = HX; | |
190 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
191 | type = type_1; | |
192 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
193 | type = type_1; | |
d8789b2b | 194 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
1da177e4 | 195 | |
8bf769eb JH |
196 | spriv->type = type; |
197 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
198 | |
199 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
200 | pl2303_vendor_write(0x0404, 0, serial); | |
201 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
202 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
203 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
204 | pl2303_vendor_write(0x0404, 1, serial); | |
205 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
206 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
207 | pl2303_vendor_write(0, 1, serial); | |
208 | pl2303_vendor_write(1, 0, serial); | |
209 | if (type == HX) | |
210 | pl2303_vendor_write(2, 0x44, serial); | |
211 | else | |
212 | pl2303_vendor_write(2, 0x24, serial); | |
213 | ||
214 | kfree(buf); | |
1da177e4 | 215 | return 0; |
8bf769eb | 216 | } |
1da177e4 | 217 | |
8bf769eb JH |
218 | static void pl2303_release(struct usb_serial *serial) |
219 | { | |
220 | struct pl2303_serial_private *spriv; | |
221 | ||
222 | spriv = usb_get_serial_data(serial); | |
223 | kfree(spriv); | |
224 | } | |
225 | ||
226 | static int pl2303_port_probe(struct usb_serial_port *port) | |
227 | { | |
228 | struct pl2303_private *priv; | |
229 | ||
230 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
231 | if (!priv) | |
232 | return -ENOMEM; | |
233 | ||
234 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
235 | |
236 | usb_set_serial_port_data(port, priv); | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static int pl2303_port_remove(struct usb_serial_port *port) | |
242 | { | |
243 | struct pl2303_private *priv; | |
244 | ||
245 | priv = usb_get_serial_port_data(port); | |
246 | kfree(priv); | |
247 | ||
248 | return 0; | |
1da177e4 LT |
249 | } |
250 | ||
f45d0a5a | 251 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 252 | { |
f45d0a5a | 253 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 254 | int retval; |
3a0f43e9 | 255 | |
372db8a7 TG |
256 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
257 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
258 | value, 0, NULL, 0, 100); | |
f45d0a5a | 259 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 260 | value, retval); |
1da177e4 LT |
261 | return retval; |
262 | } | |
263 | ||
95da310e AC |
264 | static void pl2303_set_termios(struct tty_struct *tty, |
265 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
266 | { |
267 | struct usb_serial *serial = port->serial; | |
8bf769eb | 268 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
269 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
270 | unsigned long flags; | |
271 | unsigned int cflag; | |
272 | unsigned char *buf; | |
273 | int baud; | |
274 | int i; | |
275 | u8 control; | |
25b82868 FS |
276 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
277 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
278 | 57600, 115200, 230400, 460800, 614400, | |
279 | 921600, 1228800, 2457600, 3000000, 6000000 }; | |
280 | int baud_floor, baud_ceil; | |
281 | int k; | |
1da177e4 | 282 | |
bf5e5834 AC |
283 | /* The PL2303 is reported to lose bytes if you change |
284 | serial settings even to the same values as before. Thus | |
285 | we actually need to filter in this specific case */ | |
286 | ||
adc8d746 | 287 | if (!tty_termios_hw_change(&tty->termios, old_termios)) |
bf5e5834 AC |
288 | return; |
289 | ||
adc8d746 | 290 | cflag = tty->termios.c_cflag; |
1da177e4 | 291 | |
372db8a7 | 292 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 293 | if (!buf) { |
441b62c1 | 294 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
a5b6f60c | 295 | /* Report back no change occurred */ |
adc8d746 | 296 | tty->termios = *old_termios; |
1da177e4 LT |
297 | return; |
298 | } | |
1da177e4 | 299 | |
372db8a7 TG |
300 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
301 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
302 | 0, 0, buf, 7, 100); | |
d8789b2b | 303 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i, |
372db8a7 | 304 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
1da177e4 LT |
305 | |
306 | if (cflag & CSIZE) { | |
307 | switch (cflag & CSIZE) { | |
3a0f43e9 AC |
308 | case CS5: |
309 | buf[6] = 5; | |
310 | break; | |
311 | case CS6: | |
312 | buf[6] = 6; | |
313 | break; | |
314 | case CS7: | |
315 | buf[6] = 7; | |
316 | break; | |
317 | default: | |
318 | case CS8: | |
319 | buf[6] = 8; | |
320 | break; | |
1da177e4 | 321 | } |
d8789b2b | 322 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); |
1da177e4 LT |
323 | } |
324 | ||
25b82868 FS |
325 | /* For reference buf[0]:buf[3] baud rate value */ |
326 | /* NOTE: Only the values defined in baud_sup are supported ! | |
327 | * => if unsupported values are set, the PL2303 seems to use | |
328 | * 9600 baud (at least my PL2303X always does) | |
329 | */ | |
95da310e | 330 | baud = tty_get_baud_rate(tty); |
d8789b2b | 331 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
1da177e4 | 332 | if (baud) { |
25b82868 FS |
333 | /* Set baudrate to nearest supported value */ |
334 | for (k=0; k<ARRAY_SIZE(baud_sup); k++) { | |
335 | if (baud_sup[k] / baud) { | |
336 | baud_ceil = baud_sup[k]; | |
337 | if (k==0) { | |
338 | baud = baud_ceil; | |
339 | } else { | |
340 | baud_floor = baud_sup[k-1]; | |
341 | if ((baud_ceil % baud) | |
342 | > (baud % baud_floor)) | |
343 | baud = baud_floor; | |
344 | else | |
345 | baud = baud_ceil; | |
346 | } | |
347 | break; | |
348 | } | |
349 | } | |
350 | if (baud > 1228800) { | |
351 | /* type_0, type_1 only support up to 1228800 baud */ | |
8bf769eb | 352 | if (spriv->type != HX) |
25b82868 FS |
353 | baud = 1228800; |
354 | else if (baud > 6000000) | |
355 | baud = 6000000; | |
356 | } | |
d8789b2b | 357 | dev_dbg(&port->dev, "baud set = %d\n", baud); |
8d48fdf6 MS |
358 | if (baud <= 115200) { |
359 | buf[0] = baud & 0xff; | |
360 | buf[1] = (baud >> 8) & 0xff; | |
361 | buf[2] = (baud >> 16) & 0xff; | |
362 | buf[3] = (baud >> 24) & 0xff; | |
363 | } else { | |
364 | /* apparently the formula for higher speeds is: | |
365 | * baudrate = 12M * 32 / (2^buf[1]) / buf[0] | |
366 | */ | |
367 | unsigned tmp = 12*1000*1000*32 / baud; | |
368 | buf[3] = 0x80; | |
369 | buf[2] = 0; | |
370 | buf[1] = (tmp >= 256); | |
371 | while (tmp >= 256) { | |
372 | tmp >>= 2; | |
373 | buf[1] <<= 1; | |
374 | } | |
8d48fdf6 MS |
375 | buf[0] = tmp; |
376 | } | |
1da177e4 LT |
377 | } |
378 | ||
379 | /* For reference buf[4]=0 is 1 stop bits */ | |
380 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
381 | /* For reference buf[4]=2 is 2 stop bits */ | |
382 | if (cflag & CSTOPB) { | |
29cf1b72 FS |
383 | /* NOTE: Comply with "real" UARTs / RS232: |
384 | * use 1.5 instead of 2 stop bits with 5 data bits | |
385 | */ | |
386 | if ((cflag & CSIZE) == CS5) { | |
387 | buf[4] = 1; | |
d8789b2b | 388 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
389 | } else { |
390 | buf[4] = 2; | |
d8789b2b | 391 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 392 | } |
1da177e4 LT |
393 | } else { |
394 | buf[4] = 0; | |
d8789b2b | 395 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
396 | } |
397 | ||
398 | if (cflag & PARENB) { | |
399 | /* For reference buf[5]=0 is none parity */ | |
400 | /* For reference buf[5]=1 is odd parity */ | |
401 | /* For reference buf[5]=2 is even parity */ | |
402 | /* For reference buf[5]=3 is mark parity */ | |
403 | /* For reference buf[5]=4 is space parity */ | |
404 | if (cflag & PARODD) { | |
6dd81b45 FS |
405 | if (cflag & CMSPAR) { |
406 | buf[5] = 3; | |
d8789b2b | 407 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
408 | } else { |
409 | buf[5] = 1; | |
d8789b2b | 410 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 411 | } |
1da177e4 | 412 | } else { |
6dd81b45 FS |
413 | if (cflag & CMSPAR) { |
414 | buf[5] = 4; | |
d8789b2b | 415 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
416 | } else { |
417 | buf[5] = 2; | |
d8789b2b | 418 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 419 | } |
1da177e4 LT |
420 | } |
421 | } else { | |
422 | buf[5] = 0; | |
d8789b2b | 423 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
424 | } |
425 | ||
372db8a7 TG |
426 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
427 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
428 | 0, 0, buf, 7, 100); | |
d8789b2b | 429 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); |
1da177e4 LT |
430 | |
431 | /* change control lines if we are switching to or from B0 */ | |
432 | spin_lock_irqsave(&priv->lock, flags); | |
433 | control = priv->line_control; | |
434 | if ((cflag & CBAUD) == B0) | |
435 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
ce5c9851 | 436 | else if ((old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
437 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
438 | if (control != priv->line_control) { | |
439 | control = priv->line_control; | |
440 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 441 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
442 | } else { |
443 | spin_unlock_irqrestore(&priv->lock, flags); | |
444 | } | |
372db8a7 | 445 | |
1da177e4 LT |
446 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
447 | ||
372db8a7 TG |
448 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
449 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
450 | 0, 0, buf, 7, 100); | |
d8789b2b | 451 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i, |
1da177e4 LT |
452 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
453 | ||
454 | if (cflag & CRTSCTS) { | |
8bf769eb | 455 | if (spriv->type == HX) |
eb44da0b | 456 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 457 | else |
eb44da0b | 458 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 459 | } else { |
eb44da0b | 460 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 461 | } |
572d3138 | 462 | |
25b82868 | 463 | /* Save resulting baud rate */ |
df64c471 | 464 | if (baud) |
95da310e | 465 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 466 | |
572d3138 TG |
467 | kfree(buf); |
468 | } | |
469 | ||
335f8514 AC |
470 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
471 | { | |
472 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
473 | unsigned long flags; | |
474 | u8 control; | |
475 | ||
476 | spin_lock_irqsave(&priv->lock, flags); | |
477 | /* Change DTR and RTS */ | |
478 | if (on) | |
479 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
480 | else | |
481 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
482 | control = priv->line_control; | |
483 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 484 | pl2303_set_control_lines(port, control); |
335f8514 AC |
485 | } |
486 | ||
487 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 488 | { |
8b0127b2 | 489 | usb_serial_generic_close(port); |
572d3138 | 490 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
491 | } |
492 | ||
a509a7e4 | 493 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 494 | { |
606d099c | 495 | struct ktermios tmp_termios; |
1da177e4 | 496 | struct usb_serial *serial = port->serial; |
8bf769eb | 497 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
498 | int result; |
499 | ||
8bf769eb | 500 | if (spriv->type != HX) { |
1694899f D |
501 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
502 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 503 | } else { |
1da177e4 | 504 | /* reset upstream data pipes */ |
eb44da0b SS |
505 | pl2303_vendor_write(8, 0, serial); |
506 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
507 | } |
508 | ||
1da177e4 | 509 | /* Setup termios */ |
95da310e AC |
510 | if (tty) |
511 | pl2303_set_termios(tty, port, &tmp_termios); | |
1da177e4 | 512 | |
372db8a7 | 513 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 514 | if (result) { |
372db8a7 | 515 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 516 | " error %d\n", __func__, result); |
db6e9186 | 517 | return result; |
1da177e4 | 518 | } |
d4691c3f | 519 | |
f5230a53 | 520 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
521 | if (result) { |
522 | usb_kill_urb(port->interrupt_in_urb); | |
523 | return result; | |
524 | } | |
525 | ||
335f8514 | 526 | port->port.drain_delay = 256; |
1da177e4 LT |
527 | return 0; |
528 | } | |
529 | ||
20b9d177 | 530 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 531 | unsigned int set, unsigned int clear) |
1da177e4 | 532 | { |
95da310e | 533 | struct usb_serial_port *port = tty->driver_data; |
6f1efd6c | 534 | struct usb_serial *serial = port->serial; |
1da177e4 LT |
535 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
536 | unsigned long flags; | |
537 | u8 control; | |
6f1efd6c | 538 | int ret; |
6fdd8e8e | 539 | |
372db8a7 | 540 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
541 | if (set & TIOCM_RTS) |
542 | priv->line_control |= CONTROL_RTS; | |
543 | if (set & TIOCM_DTR) | |
544 | priv->line_control |= CONTROL_DTR; | |
545 | if (clear & TIOCM_RTS) | |
546 | priv->line_control &= ~CONTROL_RTS; | |
547 | if (clear & TIOCM_DTR) | |
548 | priv->line_control &= ~CONTROL_DTR; | |
549 | control = priv->line_control; | |
372db8a7 | 550 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 551 | |
6f1efd6c | 552 | mutex_lock(&serial->disc_mutex); |
aff5b323 | 553 | if (!serial->disconnected) { |
f45d0a5a | 554 | ret = pl2303_set_control_lines(port, control); |
aff5b323 JH |
555 | if (ret) |
556 | ret = usb_translate_errors(ret); | |
557 | } else { | |
6f1efd6c | 558 | ret = -ENODEV; |
aff5b323 | 559 | } |
6f1efd6c JH |
560 | mutex_unlock(&serial->disc_mutex); |
561 | ||
562 | return ret; | |
1da177e4 LT |
563 | } |
564 | ||
60b33c13 | 565 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 566 | { |
95da310e | 567 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
568 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
569 | unsigned long flags; | |
570 | unsigned int mcr; | |
571 | unsigned int status; | |
572 | unsigned int result; | |
573 | ||
372db8a7 | 574 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
575 | mcr = priv->line_control; |
576 | status = priv->line_status; | |
372db8a7 | 577 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
578 | |
579 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
580 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
581 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
582 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
583 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
584 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
585 | ||
d8789b2b | 586 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
587 | |
588 | return result; | |
589 | } | |
590 | ||
335f8514 AC |
591 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
592 | { | |
593 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
594 | if (priv->line_status & UART_DCD) | |
595 | return 1; | |
596 | return 0; | |
597 | } | |
598 | ||
824d11be | 599 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 600 | { |
824d11be | 601 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
602 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
603 | unsigned long flags; | |
604 | unsigned int prevstatus; | |
605 | unsigned int status; | |
606 | unsigned int changed; | |
607 | ||
372db8a7 | 608 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 609 | prevstatus = priv->line_status; |
372db8a7 | 610 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
611 | |
612 | while (1) { | |
6d0cad65 | 613 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
614 | /* see if a signal did it */ |
615 | if (signal_pending(current)) | |
616 | return -ERESTARTSYS; | |
372db8a7 | 617 | |
40509ca9 JH |
618 | if (port->serial->disconnected) |
619 | return -EIO; | |
620 | ||
372db8a7 | 621 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 622 | status = priv->line_status; |
372db8a7 TG |
623 | spin_unlock_irqrestore(&priv->lock, flags); |
624 | ||
3a0f43e9 | 625 | changed = prevstatus ^ status; |
372db8a7 | 626 | |
1da177e4 LT |
627 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
628 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
629 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 630 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
631 | return 0; |
632 | } | |
633 | prevstatus = status; | |
634 | } | |
635 | /* NOTREACHED */ | |
636 | return 0; | |
637 | } | |
638 | ||
00a0d0d6 | 639 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 640 | unsigned int cmd, unsigned long arg) |
1da177e4 | 641 | { |
67b9946d | 642 | struct serial_struct ser; |
95da310e | 643 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
644 | |
645 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
646 | |
647 | switch (cmd) { | |
67b9946d JT |
648 | case TIOCGSERIAL: |
649 | memset(&ser, 0, sizeof ser); | |
650 | ser.type = PORT_16654; | |
651 | ser.line = port->serial->minor; | |
652 | ser.port = port->number; | |
653 | ser.baud_base = 460800; | |
654 | ||
655 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
656 | return -EFAULT; | |
657 | ||
658 | return 0; | |
3a0f43e9 | 659 | default: |
d8789b2b | 660 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 661 | break; |
1da177e4 | 662 | } |
1da177e4 LT |
663 | return -ENOIOCTLCMD; |
664 | } | |
665 | ||
95da310e | 666 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 667 | { |
95da310e | 668 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
669 | struct usb_serial *serial = port->serial; |
670 | u16 state; | |
671 | int result; | |
672 | ||
1da177e4 LT |
673 | if (break_state == 0) |
674 | state = BREAK_OFF; | |
675 | else | |
676 | state = BREAK_ON; | |
d8789b2b | 677 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 678 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 679 | |
372db8a7 TG |
680 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
681 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
682 | 0, NULL, 0, 100); | |
1da177e4 | 683 | if (result) |
d8789b2b | 684 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
685 | } |
686 | ||
97bb13ec FL |
687 | static void pl2303_update_line_status(struct usb_serial_port *port, |
688 | unsigned char *data, | |
689 | unsigned int actual_length) | |
690 | { | |
691 | ||
692 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 693 | struct tty_struct *tty; |
97bb13ec FL |
694 | unsigned long flags; |
695 | u8 status_idx = UART_STATE; | |
95f209f9 | 696 | u8 length = UART_STATE + 1; |
d14fc1a7 | 697 | u8 prev_line_status; |
9c537616 | 698 | u16 idv, idp; |
97bb13ec | 699 | |
9c537616 TG |
700 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
701 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
702 | ||
703 | ||
704 | if (idv == SIEMENS_VENDOR_ID) { | |
705 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
706 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
707 | idp == SIEMENS_PRODUCT_ID_X75) { | |
708 | ||
709 | length = 1; | |
710 | status_idx = 0; | |
711 | } | |
97bb13ec FL |
712 | } |
713 | ||
714 | if (actual_length < length) | |
a009b75a | 715 | return; |
97bb13ec | 716 | |
3a0f43e9 | 717 | /* Save off the uart status for others to look at */ |
97bb13ec | 718 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 719 | prev_line_status = priv->line_status; |
97bb13ec FL |
720 | priv->line_status = data[status_idx]; |
721 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
722 | if (priv->line_status & UART_BREAK_ERROR) |
723 | usb_serial_handle_break(port); | |
6d0cad65 | 724 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
725 | |
726 | tty = tty_port_tty_get(&port->port); | |
727 | if (!tty) | |
728 | return; | |
729 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
730 | usb_serial_handle_dcd_change(port, tty, | |
731 | priv->line_status & UART_DCD); | |
732 | tty_kref_put(tty); | |
97bb13ec | 733 | } |
1da177e4 | 734 | |
7d12e780 | 735 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 736 | { |
cdc97792 | 737 | struct usb_serial_port *port = urb->context; |
1da177e4 | 738 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 739 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
740 | int status = urb->status; |
741 | int retval; | |
1da177e4 | 742 | |
461d696a | 743 | switch (status) { |
1da177e4 LT |
744 | case 0: |
745 | /* success */ | |
746 | break; | |
747 | case -ECONNRESET: | |
748 | case -ENOENT: | |
749 | case -ESHUTDOWN: | |
750 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
751 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
752 | __func__, status); | |
1da177e4 LT |
753 | return; |
754 | default: | |
d8789b2b GKH |
755 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
756 | __func__, status); | |
1da177e4 LT |
757 | goto exit; |
758 | } | |
759 | ||
59d33f2f | 760 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
761 | urb->actual_length, urb->transfer_buffer); |
762 | ||
97bb13ec | 763 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 764 | |
1da177e4 | 765 | exit: |
461d696a GKH |
766 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
767 | if (retval) | |
d8789b2b | 768 | dev_err(&port->dev, |
372db8a7 | 769 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 770 | __func__, retval); |
1da177e4 LT |
771 | } |
772 | ||
f08e07ac | 773 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 774 | { |
f08e07ac JH |
775 | struct usb_serial_port *port = urb->context; |
776 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 777 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 778 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
779 | unsigned long flags; |
780 | u8 line_status; | |
781 | int i; | |
782 | ||
783 | /* update line status */ | |
784 | spin_lock_irqsave(&priv->lock, flags); | |
785 | line_status = priv->line_status; | |
786 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
787 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 788 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
789 | |
790 | if (!urb->actual_length) | |
791 | return; | |
792 | ||
d4fc4a7b AC |
793 | /* break takes precedence over parity, */ |
794 | /* which takes precedence over framing errors */ | |
795 | if (line_status & UART_BREAK_ERROR) | |
796 | tty_flag = TTY_BREAK; | |
797 | else if (line_status & UART_PARITY_ERROR) | |
798 | tty_flag = TTY_PARITY; | |
799 | else if (line_status & UART_FRAME_ERROR) | |
800 | tty_flag = TTY_FRAME; | |
d8789b2b | 801 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag); |
d4fc4a7b | 802 | |
d4fc4a7b AC |
803 | /* overrun is special, not associated with a char */ |
804 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 805 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 806 | |
d45cc8df | 807 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 808 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 809 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
810 | tty_insert_flip_char(&port->port, data[i], |
811 | tty_flag); | |
d45cc8df | 812 | } else { |
2f693357 | 813 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 814 | urb->actual_length); |
9388e2e7 | 815 | } |
1da177e4 | 816 | |
2e124b4a | 817 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
818 | } |
819 | ||
572d3138 TG |
820 | /* All of the device info needed for the PL2303 SIO serial converter */ |
821 | static struct usb_serial_driver pl2303_device = { | |
822 | .driver = { | |
823 | .owner = THIS_MODULE, | |
824 | .name = "pl2303", | |
825 | }, | |
826 | .id_table = id_table, | |
572d3138 | 827 | .num_ports = 1, |
7919c2fd | 828 | .bulk_in_size = 256, |
3efeaff6 | 829 | .bulk_out_size = 256, |
572d3138 TG |
830 | .open = pl2303_open, |
831 | .close = pl2303_close, | |
335f8514 AC |
832 | .dtr_rts = pl2303_dtr_rts, |
833 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
834 | .ioctl = pl2303_ioctl, |
835 | .break_ctl = pl2303_break_ctl, | |
836 | .set_termios = pl2303_set_termios, | |
837 | .tiocmget = pl2303_tiocmget, | |
838 | .tiocmset = pl2303_tiocmset, | |
824d11be | 839 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 840 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 841 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 842 | .attach = pl2303_startup, |
f9c99bb8 | 843 | .release = pl2303_release, |
8bf769eb JH |
844 | .port_probe = pl2303_port_probe, |
845 | .port_remove = pl2303_port_remove, | |
572d3138 | 846 | }; |
1da177e4 | 847 | |
f667ddad AS |
848 | static struct usb_serial_driver * const serial_drivers[] = { |
849 | &pl2303_device, NULL | |
850 | }; | |
851 | ||
68e24113 | 852 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
853 | |
854 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 855 | MODULE_LICENSE("GPL"); |