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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, | |
0c967e7e | 278 | 57600, 115200, 230400, 460800, 500000, 614400, |
25b82868 FS |
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 | ||
2d8f4447 | 287 | if (old_termios && !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 */ |
2d8f4447 JH |
296 | if (old_termios) |
297 | tty->termios = *old_termios; | |
1da177e4 LT |
298 | return; |
299 | } | |
1da177e4 | 300 | |
372db8a7 TG |
301 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
302 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
303 | 0, 0, buf, 7, 100); | |
715cf92a | 304 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
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); | |
2d8f4447 | 436 | else if (old_termios && (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); | |
715cf92a | 451 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 LT |
452 | |
453 | if (cflag & CRTSCTS) { | |
8bf769eb | 454 | if (spriv->type == HX) |
eb44da0b | 455 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 456 | else |
eb44da0b | 457 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 458 | } else { |
eb44da0b | 459 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 460 | } |
572d3138 | 461 | |
25b82868 | 462 | /* Save resulting baud rate */ |
df64c471 | 463 | if (baud) |
95da310e | 464 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 465 | |
572d3138 TG |
466 | kfree(buf); |
467 | } | |
468 | ||
335f8514 AC |
469 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
470 | { | |
471 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
472 | unsigned long flags; | |
473 | u8 control; | |
474 | ||
475 | spin_lock_irqsave(&priv->lock, flags); | |
476 | /* Change DTR and RTS */ | |
477 | if (on) | |
478 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
479 | else | |
480 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
481 | control = priv->line_control; | |
482 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 483 | pl2303_set_control_lines(port, control); |
335f8514 AC |
484 | } |
485 | ||
486 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 487 | { |
8b0127b2 | 488 | usb_serial_generic_close(port); |
572d3138 | 489 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
490 | } |
491 | ||
a509a7e4 | 492 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 493 | { |
1da177e4 | 494 | struct usb_serial *serial = port->serial; |
8bf769eb | 495 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
496 | int result; |
497 | ||
8bf769eb | 498 | if (spriv->type != HX) { |
1694899f D |
499 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
500 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 501 | } else { |
1da177e4 | 502 | /* reset upstream data pipes */ |
eb44da0b SS |
503 | pl2303_vendor_write(8, 0, serial); |
504 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
505 | } |
506 | ||
1da177e4 | 507 | /* Setup termios */ |
95da310e | 508 | if (tty) |
2d8f4447 | 509 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 510 | |
372db8a7 | 511 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 512 | if (result) { |
372db8a7 | 513 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 514 | " error %d\n", __func__, result); |
db6e9186 | 515 | return result; |
1da177e4 | 516 | } |
d4691c3f | 517 | |
f5230a53 | 518 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
519 | if (result) { |
520 | usb_kill_urb(port->interrupt_in_urb); | |
521 | return result; | |
522 | } | |
523 | ||
335f8514 | 524 | port->port.drain_delay = 256; |
1da177e4 LT |
525 | return 0; |
526 | } | |
527 | ||
20b9d177 | 528 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 529 | unsigned int set, unsigned int clear) |
1da177e4 | 530 | { |
95da310e | 531 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
532 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
533 | unsigned long flags; | |
534 | u8 control; | |
6f1efd6c | 535 | int ret; |
6fdd8e8e | 536 | |
372db8a7 | 537 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
538 | if (set & TIOCM_RTS) |
539 | priv->line_control |= CONTROL_RTS; | |
540 | if (set & TIOCM_DTR) | |
541 | priv->line_control |= CONTROL_DTR; | |
542 | if (clear & TIOCM_RTS) | |
543 | priv->line_control &= ~CONTROL_RTS; | |
544 | if (clear & TIOCM_DTR) | |
545 | priv->line_control &= ~CONTROL_DTR; | |
546 | control = priv->line_control; | |
372db8a7 | 547 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 548 | |
5ddbb26b JH |
549 | ret = pl2303_set_control_lines(port, control); |
550 | if (ret) | |
551 | return usb_translate_errors(ret); | |
6f1efd6c | 552 | |
5ddbb26b | 553 | return 0; |
1da177e4 LT |
554 | } |
555 | ||
60b33c13 | 556 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 557 | { |
95da310e | 558 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
559 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
560 | unsigned long flags; | |
561 | unsigned int mcr; | |
562 | unsigned int status; | |
563 | unsigned int result; | |
564 | ||
372db8a7 | 565 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
566 | mcr = priv->line_control; |
567 | status = priv->line_status; | |
372db8a7 | 568 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
569 | |
570 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
571 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
572 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
573 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
574 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
575 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
576 | ||
d8789b2b | 577 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
578 | |
579 | return result; | |
580 | } | |
581 | ||
335f8514 AC |
582 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
583 | { | |
584 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
585 | if (priv->line_status & UART_DCD) | |
586 | return 1; | |
587 | return 0; | |
588 | } | |
589 | ||
824d11be | 590 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 591 | { |
824d11be | 592 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
593 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
594 | unsigned long flags; | |
595 | unsigned int prevstatus; | |
596 | unsigned int status; | |
597 | unsigned int changed; | |
598 | ||
372db8a7 | 599 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 600 | prevstatus = priv->line_status; |
372db8a7 | 601 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
602 | |
603 | while (1) { | |
6d0cad65 | 604 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
605 | /* see if a signal did it */ |
606 | if (signal_pending(current)) | |
607 | return -ERESTARTSYS; | |
372db8a7 | 608 | |
40509ca9 JH |
609 | if (port->serial->disconnected) |
610 | return -EIO; | |
611 | ||
372db8a7 | 612 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 613 | status = priv->line_status; |
372db8a7 TG |
614 | spin_unlock_irqrestore(&priv->lock, flags); |
615 | ||
3a0f43e9 | 616 | changed = prevstatus ^ status; |
372db8a7 | 617 | |
1da177e4 LT |
618 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
619 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
620 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 621 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
622 | return 0; |
623 | } | |
624 | prevstatus = status; | |
625 | } | |
626 | /* NOTREACHED */ | |
627 | return 0; | |
628 | } | |
629 | ||
00a0d0d6 | 630 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 631 | unsigned int cmd, unsigned long arg) |
1da177e4 | 632 | { |
67b9946d | 633 | struct serial_struct ser; |
95da310e | 634 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
635 | |
636 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
637 | |
638 | switch (cmd) { | |
67b9946d JT |
639 | case TIOCGSERIAL: |
640 | memset(&ser, 0, sizeof ser); | |
641 | ser.type = PORT_16654; | |
e5b1e206 | 642 | ser.line = port->minor; |
1143832e | 643 | ser.port = port->port_number; |
67b9946d JT |
644 | ser.baud_base = 460800; |
645 | ||
646 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
647 | return -EFAULT; | |
648 | ||
649 | return 0; | |
3a0f43e9 | 650 | default: |
d8789b2b | 651 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 652 | break; |
1da177e4 | 653 | } |
1da177e4 LT |
654 | return -ENOIOCTLCMD; |
655 | } | |
656 | ||
95da310e | 657 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 658 | { |
95da310e | 659 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
660 | struct usb_serial *serial = port->serial; |
661 | u16 state; | |
662 | int result; | |
663 | ||
1da177e4 LT |
664 | if (break_state == 0) |
665 | state = BREAK_OFF; | |
666 | else | |
667 | state = BREAK_ON; | |
d8789b2b | 668 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 669 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 670 | |
372db8a7 TG |
671 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
672 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
673 | 0, NULL, 0, 100); | |
1da177e4 | 674 | if (result) |
d8789b2b | 675 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
676 | } |
677 | ||
97bb13ec FL |
678 | static void pl2303_update_line_status(struct usb_serial_port *port, |
679 | unsigned char *data, | |
680 | unsigned int actual_length) | |
681 | { | |
682 | ||
683 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 684 | struct tty_struct *tty; |
97bb13ec FL |
685 | unsigned long flags; |
686 | u8 status_idx = UART_STATE; | |
95f209f9 | 687 | u8 length = UART_STATE + 1; |
d14fc1a7 | 688 | u8 prev_line_status; |
9c537616 | 689 | u16 idv, idp; |
97bb13ec | 690 | |
9c537616 TG |
691 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
692 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
693 | ||
694 | ||
695 | if (idv == SIEMENS_VENDOR_ID) { | |
696 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
697 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
698 | idp == SIEMENS_PRODUCT_ID_X75) { | |
699 | ||
700 | length = 1; | |
701 | status_idx = 0; | |
702 | } | |
97bb13ec FL |
703 | } |
704 | ||
705 | if (actual_length < length) | |
a009b75a | 706 | return; |
97bb13ec | 707 | |
3a0f43e9 | 708 | /* Save off the uart status for others to look at */ |
97bb13ec | 709 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 710 | prev_line_status = priv->line_status; |
97bb13ec FL |
711 | priv->line_status = data[status_idx]; |
712 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
713 | if (priv->line_status & UART_BREAK_ERROR) |
714 | usb_serial_handle_break(port); | |
6d0cad65 | 715 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
716 | |
717 | tty = tty_port_tty_get(&port->port); | |
718 | if (!tty) | |
719 | return; | |
720 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
721 | usb_serial_handle_dcd_change(port, tty, | |
722 | priv->line_status & UART_DCD); | |
723 | tty_kref_put(tty); | |
97bb13ec | 724 | } |
1da177e4 | 725 | |
7d12e780 | 726 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 727 | { |
cdc97792 | 728 | struct usb_serial_port *port = urb->context; |
1da177e4 | 729 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 730 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
731 | int status = urb->status; |
732 | int retval; | |
1da177e4 | 733 | |
461d696a | 734 | switch (status) { |
1da177e4 LT |
735 | case 0: |
736 | /* success */ | |
737 | break; | |
738 | case -ECONNRESET: | |
739 | case -ENOENT: | |
740 | case -ESHUTDOWN: | |
741 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
742 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
743 | __func__, status); | |
1da177e4 LT |
744 | return; |
745 | default: | |
d8789b2b GKH |
746 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
747 | __func__, status); | |
1da177e4 LT |
748 | goto exit; |
749 | } | |
750 | ||
59d33f2f | 751 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
752 | urb->actual_length, urb->transfer_buffer); |
753 | ||
97bb13ec | 754 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 755 | |
1da177e4 | 756 | exit: |
461d696a GKH |
757 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
758 | if (retval) | |
d8789b2b | 759 | dev_err(&port->dev, |
372db8a7 | 760 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 761 | __func__, retval); |
1da177e4 LT |
762 | } |
763 | ||
f08e07ac | 764 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 765 | { |
f08e07ac JH |
766 | struct usb_serial_port *port = urb->context; |
767 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 768 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 769 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
770 | unsigned long flags; |
771 | u8 line_status; | |
772 | int i; | |
773 | ||
774 | /* update line status */ | |
775 | spin_lock_irqsave(&priv->lock, flags); | |
776 | line_status = priv->line_status; | |
777 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
778 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 779 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
780 | |
781 | if (!urb->actual_length) | |
782 | return; | |
783 | ||
d4fc4a7b AC |
784 | /* break takes precedence over parity, */ |
785 | /* which takes precedence over framing errors */ | |
786 | if (line_status & UART_BREAK_ERROR) | |
787 | tty_flag = TTY_BREAK; | |
788 | else if (line_status & UART_PARITY_ERROR) | |
789 | tty_flag = TTY_PARITY; | |
790 | else if (line_status & UART_FRAME_ERROR) | |
791 | tty_flag = TTY_FRAME; | |
d8789b2b | 792 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag); |
d4fc4a7b | 793 | |
d4fc4a7b AC |
794 | /* overrun is special, not associated with a char */ |
795 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 796 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 797 | |
d45cc8df | 798 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 799 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 800 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
801 | tty_insert_flip_char(&port->port, data[i], |
802 | tty_flag); | |
d45cc8df | 803 | } else { |
2f693357 | 804 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 805 | urb->actual_length); |
9388e2e7 | 806 | } |
1da177e4 | 807 | |
2e124b4a | 808 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
809 | } |
810 | ||
572d3138 TG |
811 | /* All of the device info needed for the PL2303 SIO serial converter */ |
812 | static struct usb_serial_driver pl2303_device = { | |
813 | .driver = { | |
814 | .owner = THIS_MODULE, | |
815 | .name = "pl2303", | |
816 | }, | |
817 | .id_table = id_table, | |
572d3138 | 818 | .num_ports = 1, |
7919c2fd | 819 | .bulk_in_size = 256, |
3efeaff6 | 820 | .bulk_out_size = 256, |
572d3138 TG |
821 | .open = pl2303_open, |
822 | .close = pl2303_close, | |
335f8514 AC |
823 | .dtr_rts = pl2303_dtr_rts, |
824 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
825 | .ioctl = pl2303_ioctl, |
826 | .break_ctl = pl2303_break_ctl, | |
827 | .set_termios = pl2303_set_termios, | |
828 | .tiocmget = pl2303_tiocmget, | |
829 | .tiocmset = pl2303_tiocmset, | |
824d11be | 830 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 831 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 832 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 833 | .attach = pl2303_startup, |
f9c99bb8 | 834 | .release = pl2303_release, |
8bf769eb JH |
835 | .port_probe = pl2303_port_probe, |
836 | .port_remove = pl2303_port_remove, | |
572d3138 | 837 | }; |
1da177e4 | 838 | |
f667ddad AS |
839 | static struct usb_serial_driver * const serial_drivers[] = { |
840 | &pl2303_device, NULL | |
841 | }; | |
842 | ||
68e24113 | 843 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
844 | |
845 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 846 | MODULE_LICENSE("GPL"); |