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 | * | |
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 | ||
39 | static int debug; | |
40 | ||
41 | #define PL2303_CLOSING_WAIT (30*HZ) | |
42 | ||
7d40d7e8 | 43 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
44 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
45 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 49 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 50 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 51 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
18344a1c | 52 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
96a3e79e | 53 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
1da177e4 | 54 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 55 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
56 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
57 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
58 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
59 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
60 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 61 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
62 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
63 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
64 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
65 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
66 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
67 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
68 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
69 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 70 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 71 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 72 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 73 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 74 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 75 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
76 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
77 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 78 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 79 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 80 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 81 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 82 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 83 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 84 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 85 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 86 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 87 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 88 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 89 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 90 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 91 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 92 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 93 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
1da177e4 LT |
94 | { } /* Terminating entry */ |
95 | }; | |
96 | ||
372db8a7 | 97 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
98 | |
99 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
100 | .name = "pl2303", |
101 | .probe = usb_serial_probe, | |
102 | .disconnect = usb_serial_disconnect, | |
103 | .id_table = id_table, | |
fcf9e55e SS |
104 | .suspend = usb_serial_suspend, |
105 | .resume = usb_serial_resume, | |
ba9dc657 | 106 | .no_dynamic_id = 1, |
fcf9e55e | 107 | .supports_autosuspend = 1, |
1da177e4 LT |
108 | }; |
109 | ||
110 | #define SET_LINE_REQUEST_TYPE 0x21 | |
111 | #define SET_LINE_REQUEST 0x20 | |
112 | ||
113 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
114 | #define SET_CONTROL_REQUEST 0x22 | |
115 | #define CONTROL_DTR 0x01 | |
116 | #define CONTROL_RTS 0x02 | |
117 | ||
118 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 119 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
120 | #define BREAK_ON 0xffff |
121 | #define BREAK_OFF 0x0000 | |
122 | ||
123 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
124 | #define GET_LINE_REQUEST 0x21 | |
125 | ||
126 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
127 | #define VENDOR_WRITE_REQUEST 0x01 | |
128 | ||
129 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
130 | #define VENDOR_READ_REQUEST 0x01 | |
131 | ||
132 | #define UART_STATE 0x08 | |
133 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
134 | #define UART_DCD 0x01 | |
135 | #define UART_DSR 0x02 | |
136 | #define UART_BREAK_ERROR 0x04 | |
137 | #define UART_RING 0x08 | |
138 | #define UART_FRAME_ERROR 0x10 | |
139 | #define UART_PARITY_ERROR 0x20 | |
140 | #define UART_OVERRUN_ERROR 0x40 | |
141 | #define UART_CTS 0x80 | |
142 | ||
1da177e4 LT |
143 | |
144 | enum pl2303_type { | |
145 | type_0, /* don't know the difference between type 0 and */ | |
146 | type_1, /* type 1, until someone from prolific tells us... */ | |
147 | HX, /* HX version of the pl2303 chip */ | |
148 | }; | |
149 | ||
150 | struct pl2303_private { | |
151 | spinlock_t lock; | |
1da177e4 LT |
152 | wait_queue_head_t delta_msr_wait; |
153 | u8 line_control; | |
154 | u8 line_status; | |
1da177e4 LT |
155 | enum pl2303_type type; |
156 | }; | |
157 | ||
eb44da0b SS |
158 | static int pl2303_vendor_read(__u16 value, __u16 index, |
159 | struct usb_serial *serial, unsigned char *buf) | |
160 | { | |
161 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
162 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
163 | value, index, buf, 1, 100); | |
164 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, | |
165 | VENDOR_READ_REQUEST, value, index, res, buf[0]); | |
166 | return res; | |
167 | } | |
168 | ||
169 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
170 | struct usb_serial *serial) | |
171 | { | |
172 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
173 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
174 | value, index, NULL, 0, 100); | |
175 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, | |
176 | VENDOR_WRITE_REQUEST, value, index, res); | |
177 | return res; | |
178 | } | |
179 | ||
372db8a7 | 180 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
181 | { |
182 | struct pl2303_private *priv; | |
183 | enum pl2303_type type = type_0; | |
3e152505 | 184 | unsigned char *buf; |
1da177e4 LT |
185 | int i; |
186 | ||
3e152505 SS |
187 | buf = kmalloc(10, GFP_KERNEL); |
188 | if (buf == NULL) | |
189 | return -ENOMEM; | |
190 | ||
1da177e4 LT |
191 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
192 | type = type_0; | |
193 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
194 | type = HX; | |
195 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
196 | type = type_1; | |
197 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
198 | type = type_1; | |
199 | dbg("device type: %d", type); | |
200 | ||
201 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 202 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
203 | if (!priv) |
204 | goto cleanup; | |
1da177e4 | 205 | spin_lock_init(&priv->lock); |
1da177e4 LT |
206 | init_waitqueue_head(&priv->delta_msr_wait); |
207 | priv->type = type; | |
208 | usb_set_serial_port_data(serial->port[i], priv); | |
209 | } | |
3e152505 SS |
210 | |
211 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
212 | pl2303_vendor_write(0x0404, 0, serial); | |
213 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
214 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
215 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
216 | pl2303_vendor_write(0x0404, 1, serial); | |
217 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
218 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
219 | pl2303_vendor_write(0, 1, serial); | |
220 | pl2303_vendor_write(1, 0, serial); | |
221 | if (type == HX) | |
222 | pl2303_vendor_write(2, 0x44, serial); | |
223 | else | |
224 | pl2303_vendor_write(2, 0x24, serial); | |
225 | ||
226 | kfree(buf); | |
1da177e4 LT |
227 | return 0; |
228 | ||
229 | cleanup: | |
3e152505 | 230 | kfree(buf); |
3a0f43e9 | 231 | for (--i; i >= 0; --i) { |
1da177e4 | 232 | priv = usb_get_serial_port_data(serial->port[i]); |
1da177e4 LT |
233 | kfree(priv); |
234 | usb_set_serial_port_data(serial->port[i], NULL); | |
235 | } | |
236 | return -ENOMEM; | |
237 | } | |
238 | ||
372db8a7 | 239 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
240 | { |
241 | int retval; | |
3a0f43e9 | 242 | |
372db8a7 TG |
243 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
244 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
245 | value, 0, NULL, 0, 100); | |
441b62c1 | 246 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
1da177e4 LT |
247 | return retval; |
248 | } | |
249 | ||
95da310e AC |
250 | static void pl2303_set_termios(struct tty_struct *tty, |
251 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
252 | { |
253 | struct usb_serial *serial = port->serial; | |
254 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
255 | unsigned long flags; | |
256 | unsigned int cflag; | |
257 | unsigned char *buf; | |
258 | int baud; | |
259 | int i; | |
260 | u8 control; | |
25b82868 FS |
261 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
262 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
263 | 57600, 115200, 230400, 460800, 614400, | |
264 | 921600, 1228800, 2457600, 3000000, 6000000 }; | |
265 | int baud_floor, baud_ceil; | |
266 | int k; | |
1da177e4 | 267 | |
441b62c1 | 268 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 269 | |
bf5e5834 AC |
270 | /* The PL2303 is reported to lose bytes if you change |
271 | serial settings even to the same values as before. Thus | |
272 | we actually need to filter in this specific case */ | |
273 | ||
95da310e | 274 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
bf5e5834 AC |
275 | return; |
276 | ||
95da310e | 277 | cflag = tty->termios->c_cflag; |
1da177e4 | 278 | |
372db8a7 | 279 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 280 | if (!buf) { |
441b62c1 | 281 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
a5b6f60c | 282 | /* Report back no change occurred */ |
95da310e | 283 | *tty->termios = *old_termios; |
1da177e4 LT |
284 | return; |
285 | } | |
1da177e4 | 286 | |
372db8a7 TG |
287 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
288 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
289 | 0, 0, buf, 7, 100); | |
290 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
291 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
292 | |
293 | if (cflag & CSIZE) { | |
294 | switch (cflag & CSIZE) { | |
3a0f43e9 AC |
295 | case CS5: |
296 | buf[6] = 5; | |
297 | break; | |
298 | case CS6: | |
299 | buf[6] = 6; | |
300 | break; | |
301 | case CS7: | |
302 | buf[6] = 7; | |
303 | break; | |
304 | default: | |
305 | case CS8: | |
306 | buf[6] = 8; | |
307 | break; | |
1da177e4 | 308 | } |
441b62c1 | 309 | dbg("%s - data bits = %d", __func__, buf[6]); |
1da177e4 LT |
310 | } |
311 | ||
25b82868 FS |
312 | /* For reference buf[0]:buf[3] baud rate value */ |
313 | /* NOTE: Only the values defined in baud_sup are supported ! | |
314 | * => if unsupported values are set, the PL2303 seems to use | |
315 | * 9600 baud (at least my PL2303X always does) | |
316 | */ | |
95da310e | 317 | baud = tty_get_baud_rate(tty); |
25b82868 | 318 | dbg("%s - baud requested = %d", __func__, baud); |
1da177e4 | 319 | if (baud) { |
25b82868 FS |
320 | /* Set baudrate to nearest supported value */ |
321 | for (k=0; k<ARRAY_SIZE(baud_sup); k++) { | |
322 | if (baud_sup[k] / baud) { | |
323 | baud_ceil = baud_sup[k]; | |
324 | if (k==0) { | |
325 | baud = baud_ceil; | |
326 | } else { | |
327 | baud_floor = baud_sup[k-1]; | |
328 | if ((baud_ceil % baud) | |
329 | > (baud % baud_floor)) | |
330 | baud = baud_floor; | |
331 | else | |
332 | baud = baud_ceil; | |
333 | } | |
334 | break; | |
335 | } | |
336 | } | |
337 | if (baud > 1228800) { | |
338 | /* type_0, type_1 only support up to 1228800 baud */ | |
339 | if (priv->type != HX) | |
340 | baud = 1228800; | |
341 | else if (baud > 6000000) | |
342 | baud = 6000000; | |
343 | } | |
344 | dbg("%s - baud set = %d", __func__, baud); | |
1da177e4 LT |
345 | buf[0] = baud & 0xff; |
346 | buf[1] = (baud >> 8) & 0xff; | |
347 | buf[2] = (baud >> 16) & 0xff; | |
348 | buf[3] = (baud >> 24) & 0xff; | |
349 | } | |
350 | ||
351 | /* For reference buf[4]=0 is 1 stop bits */ | |
352 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
353 | /* For reference buf[4]=2 is 2 stop bits */ | |
354 | if (cflag & CSTOPB) { | |
29cf1b72 FS |
355 | /* NOTE: Comply with "real" UARTs / RS232: |
356 | * use 1.5 instead of 2 stop bits with 5 data bits | |
357 | */ | |
358 | if ((cflag & CSIZE) == CS5) { | |
359 | buf[4] = 1; | |
360 | dbg("%s - stop bits = 1.5", __func__); | |
361 | } else { | |
362 | buf[4] = 2; | |
363 | dbg("%s - stop bits = 2", __func__); | |
364 | } | |
1da177e4 LT |
365 | } else { |
366 | buf[4] = 0; | |
441b62c1 | 367 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
368 | } |
369 | ||
370 | if (cflag & PARENB) { | |
371 | /* For reference buf[5]=0 is none parity */ | |
372 | /* For reference buf[5]=1 is odd parity */ | |
373 | /* For reference buf[5]=2 is even parity */ | |
374 | /* For reference buf[5]=3 is mark parity */ | |
375 | /* For reference buf[5]=4 is space parity */ | |
376 | if (cflag & PARODD) { | |
6dd81b45 FS |
377 | if (cflag & CMSPAR) { |
378 | buf[5] = 3; | |
379 | dbg("%s - parity = mark", __func__); | |
380 | } else { | |
381 | buf[5] = 1; | |
382 | dbg("%s - parity = odd", __func__); | |
383 | } | |
1da177e4 | 384 | } else { |
6dd81b45 FS |
385 | if (cflag & CMSPAR) { |
386 | buf[5] = 4; | |
387 | dbg("%s - parity = space", __func__); | |
388 | } else { | |
389 | buf[5] = 2; | |
390 | dbg("%s - parity = even", __func__); | |
391 | } | |
1da177e4 LT |
392 | } |
393 | } else { | |
394 | buf[5] = 0; | |
441b62c1 | 395 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
396 | } |
397 | ||
372db8a7 TG |
398 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
399 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
400 | 0, 0, buf, 7, 100); | |
401 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
402 | |
403 | /* change control lines if we are switching to or from B0 */ | |
404 | spin_lock_irqsave(&priv->lock, flags); | |
405 | control = priv->line_control; | |
406 | if ((cflag & CBAUD) == B0) | |
407 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
408 | else | |
409 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
410 | if (control != priv->line_control) { | |
411 | control = priv->line_control; | |
412 | spin_unlock_irqrestore(&priv->lock, flags); | |
413 | set_control_lines(serial->dev, control); | |
414 | } else { | |
415 | spin_unlock_irqrestore(&priv->lock, flags); | |
416 | } | |
372db8a7 | 417 | |
1da177e4 LT |
418 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
419 | ||
372db8a7 TG |
420 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
421 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
422 | 0, 0, buf, 7, 100); | |
423 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
424 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
425 | ||
426 | if (cflag & CRTSCTS) { | |
1da177e4 | 427 | if (priv->type == HX) |
eb44da0b | 428 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 429 | else |
eb44da0b | 430 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 431 | } else { |
eb44da0b | 432 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 433 | } |
572d3138 | 434 | |
25b82868 | 435 | /* Save resulting baud rate */ |
df64c471 | 436 | if (baud) |
95da310e | 437 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 438 | |
572d3138 TG |
439 | kfree(buf); |
440 | } | |
441 | ||
335f8514 AC |
442 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
443 | { | |
444 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
445 | unsigned long flags; | |
446 | u8 control; | |
447 | ||
448 | spin_lock_irqsave(&priv->lock, flags); | |
449 | /* Change DTR and RTS */ | |
450 | if (on) | |
451 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
452 | else | |
453 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
454 | control = priv->line_control; | |
455 | spin_unlock_irqrestore(&priv->lock, flags); | |
456 | set_control_lines(port->serial->dev, control); | |
457 | } | |
458 | ||
459 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 460 | { |
441b62c1 | 461 | dbg("%s - port %d", __func__, port->number); |
572d3138 | 462 | |
8b0127b2 | 463 | usb_serial_generic_close(port); |
572d3138 | 464 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
465 | } |
466 | ||
a509a7e4 | 467 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 468 | { |
606d099c | 469 | struct ktermios tmp_termios; |
1da177e4 LT |
470 | struct usb_serial *serial = port->serial; |
471 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1da177e4 LT |
472 | int result; |
473 | ||
441b62c1 | 474 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 475 | |
1694899f D |
476 | if (priv->type != HX) { |
477 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
478 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 479 | } else { |
1da177e4 | 480 | /* reset upstream data pipes */ |
eb44da0b SS |
481 | pl2303_vendor_write(8, 0, serial); |
482 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
483 | } |
484 | ||
1da177e4 | 485 | /* Setup termios */ |
95da310e AC |
486 | if (tty) |
487 | pl2303_set_termios(tty, port, &tmp_termios); | |
1da177e4 | 488 | |
441b62c1 | 489 | dbg("%s - submitting read urb", __func__); |
f08e07ac | 490 | result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); |
1da177e4 | 491 | if (result) { |
335f8514 | 492 | pl2303_close(port); |
1da177e4 LT |
493 | return -EPROTO; |
494 | } | |
495 | ||
441b62c1 | 496 | dbg("%s - submitting interrupt urb", __func__); |
372db8a7 | 497 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 498 | if (result) { |
372db8a7 | 499 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 500 | " error %d\n", __func__, result); |
335f8514 | 501 | pl2303_close(port); |
1da177e4 LT |
502 | return -EPROTO; |
503 | } | |
335f8514 | 504 | port->port.drain_delay = 256; |
1da177e4 LT |
505 | return 0; |
506 | } | |
507 | ||
20b9d177 | 508 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 509 | unsigned int set, unsigned int clear) |
1da177e4 | 510 | { |
95da310e | 511 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
512 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
513 | unsigned long flags; | |
514 | u8 control; | |
515 | ||
6fdd8e8e FL |
516 | if (!usb_get_intfdata(port->serial->interface)) |
517 | return -ENODEV; | |
518 | ||
372db8a7 | 519 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
520 | if (set & TIOCM_RTS) |
521 | priv->line_control |= CONTROL_RTS; | |
522 | if (set & TIOCM_DTR) | |
523 | priv->line_control |= CONTROL_DTR; | |
524 | if (clear & TIOCM_RTS) | |
525 | priv->line_control &= ~CONTROL_RTS; | |
526 | if (clear & TIOCM_DTR) | |
527 | priv->line_control &= ~CONTROL_DTR; | |
528 | control = priv->line_control; | |
372db8a7 | 529 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 530 | |
372db8a7 | 531 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
532 | } |
533 | ||
60b33c13 | 534 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 535 | { |
95da310e | 536 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
537 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
538 | unsigned long flags; | |
539 | unsigned int mcr; | |
540 | unsigned int status; | |
541 | unsigned int result; | |
542 | ||
441b62c1 | 543 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 544 | |
6fdd8e8e FL |
545 | if (!usb_get_intfdata(port->serial->interface)) |
546 | return -ENODEV; | |
547 | ||
372db8a7 | 548 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
549 | mcr = priv->line_control; |
550 | status = priv->line_status; | |
372db8a7 | 551 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
552 | |
553 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
554 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
555 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
556 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
557 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
558 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
559 | ||
441b62c1 | 560 | dbg("%s - result = %x", __func__, result); |
1da177e4 LT |
561 | |
562 | return result; | |
563 | } | |
564 | ||
335f8514 AC |
565 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
566 | { | |
567 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
568 | if (priv->line_status & UART_DCD) | |
569 | return 1; | |
570 | return 0; | |
571 | } | |
572 | ||
1da177e4 LT |
573 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) |
574 | { | |
575 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
576 | unsigned long flags; | |
577 | unsigned int prevstatus; | |
578 | unsigned int status; | |
579 | unsigned int changed; | |
580 | ||
372db8a7 | 581 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 582 | prevstatus = priv->line_status; |
372db8a7 | 583 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
584 | |
585 | while (1) { | |
586 | interruptible_sleep_on(&priv->delta_msr_wait); | |
587 | /* see if a signal did it */ | |
588 | if (signal_pending(current)) | |
589 | return -ERESTARTSYS; | |
372db8a7 TG |
590 | |
591 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 592 | status = priv->line_status; |
372db8a7 TG |
593 | spin_unlock_irqrestore(&priv->lock, flags); |
594 | ||
3a0f43e9 | 595 | changed = prevstatus ^ status; |
372db8a7 | 596 | |
1da177e4 LT |
597 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
598 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
599 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 600 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
601 | return 0; |
602 | } | |
603 | prevstatus = status; | |
604 | } | |
605 | /* NOTREACHED */ | |
606 | return 0; | |
607 | } | |
608 | ||
95da310e | 609 | static int pl2303_ioctl(struct tty_struct *tty, struct file *file, |
372db8a7 | 610 | unsigned int cmd, unsigned long arg) |
1da177e4 | 611 | { |
67b9946d | 612 | struct serial_struct ser; |
95da310e | 613 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 614 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
1da177e4 LT |
615 | |
616 | switch (cmd) { | |
67b9946d JT |
617 | case TIOCGSERIAL: |
618 | memset(&ser, 0, sizeof ser); | |
619 | ser.type = PORT_16654; | |
620 | ser.line = port->serial->minor; | |
621 | ser.port = port->number; | |
622 | ser.baud_base = 460800; | |
623 | ||
624 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
625 | return -EFAULT; | |
626 | ||
627 | return 0; | |
628 | ||
3a0f43e9 AC |
629 | case TIOCMIWAIT: |
630 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
631 | return wait_modem_info(port, arg); | |
632 | default: | |
633 | dbg("%s not supported = 0x%04x", __func__, cmd); | |
634 | break; | |
1da177e4 | 635 | } |
1da177e4 LT |
636 | return -ENOIOCTLCMD; |
637 | } | |
638 | ||
95da310e | 639 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 640 | { |
95da310e | 641 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
642 | struct usb_serial *serial = port->serial; |
643 | u16 state; | |
644 | int result; | |
645 | ||
441b62c1 | 646 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
647 | |
648 | if (break_state == 0) | |
649 | state = BREAK_OFF; | |
650 | else | |
651 | state = BREAK_ON; | |
3a0f43e9 AC |
652 | dbg("%s - turning break %s", __func__, |
653 | state == BREAK_OFF ? "off" : "on"); | |
1da177e4 | 654 | |
372db8a7 TG |
655 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
656 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
657 | 0, NULL, 0, 100); | |
1da177e4 | 658 | if (result) |
441b62c1 | 659 | dbg("%s - error sending break = %d", __func__, result); |
1da177e4 LT |
660 | } |
661 | ||
f9c99bb8 | 662 | static void pl2303_release(struct usb_serial *serial) |
1da177e4 LT |
663 | { |
664 | int i; | |
665 | struct pl2303_private *priv; | |
666 | ||
441b62c1 | 667 | dbg("%s", __func__); |
1da177e4 LT |
668 | |
669 | for (i = 0; i < serial->num_ports; ++i) { | |
670 | priv = usb_get_serial_port_data(serial->port[i]); | |
684c6e30 | 671 | kfree(priv); |
372db8a7 | 672 | } |
1da177e4 LT |
673 | } |
674 | ||
97bb13ec FL |
675 | static void pl2303_update_line_status(struct usb_serial_port *port, |
676 | unsigned char *data, | |
677 | unsigned int actual_length) | |
678 | { | |
679 | ||
680 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 681 | struct tty_struct *tty; |
97bb13ec FL |
682 | unsigned long flags; |
683 | u8 status_idx = UART_STATE; | |
95f209f9 | 684 | u8 length = UART_STATE + 1; |
d14fc1a7 | 685 | u8 prev_line_status; |
9c537616 | 686 | u16 idv, idp; |
97bb13ec | 687 | |
9c537616 TG |
688 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
689 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
690 | ||
691 | ||
692 | if (idv == SIEMENS_VENDOR_ID) { | |
693 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
694 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
695 | idp == SIEMENS_PRODUCT_ID_X75) { | |
696 | ||
697 | length = 1; | |
698 | status_idx = 0; | |
699 | } | |
97bb13ec FL |
700 | } |
701 | ||
702 | if (actual_length < length) | |
a009b75a | 703 | return; |
97bb13ec | 704 | |
3a0f43e9 | 705 | /* Save off the uart status for others to look at */ |
97bb13ec | 706 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 707 | prev_line_status = priv->line_status; |
97bb13ec FL |
708 | priv->line_status = data[status_idx]; |
709 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
710 | if (priv->line_status & UART_BREAK_ERROR) |
711 | usb_serial_handle_break(port); | |
372db8a7 | 712 | wake_up_interruptible(&priv->delta_msr_wait); |
d14fc1a7 LP |
713 | |
714 | tty = tty_port_tty_get(&port->port); | |
715 | if (!tty) | |
716 | return; | |
717 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
718 | usb_serial_handle_dcd_change(port, tty, | |
719 | priv->line_status & UART_DCD); | |
720 | tty_kref_put(tty); | |
97bb13ec | 721 | } |
1da177e4 | 722 | |
7d12e780 | 723 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 724 | { |
cdc97792 | 725 | struct usb_serial_port *port = urb->context; |
1da177e4 | 726 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 727 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
728 | int status = urb->status; |
729 | int retval; | |
1da177e4 | 730 | |
441b62c1 | 731 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 732 | |
461d696a | 733 | switch (status) { |
1da177e4 LT |
734 | case 0: |
735 | /* success */ | |
736 | break; | |
737 | case -ECONNRESET: | |
738 | case -ENOENT: | |
739 | case -ESHUTDOWN: | |
740 | /* this urb is terminated, clean up */ | |
441b62c1 | 741 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 742 | status); |
1da177e4 LT |
743 | return; |
744 | default: | |
441b62c1 | 745 | dbg("%s - nonzero urb status received: %d", __func__, |
461d696a | 746 | status); |
1da177e4 LT |
747 | goto exit; |
748 | } | |
749 | ||
441b62c1 | 750 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 TG |
751 | urb->actual_length, urb->transfer_buffer); |
752 | ||
97bb13ec | 753 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 754 | |
1da177e4 | 755 | exit: |
461d696a GKH |
756 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
757 | if (retval) | |
372db8a7 TG |
758 | dev_err(&urb->dev->dev, |
759 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 760 | __func__, retval); |
1da177e4 LT |
761 | } |
762 | ||
f08e07ac | 763 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 764 | { |
f08e07ac JH |
765 | struct usb_serial_port *port = urb->context; |
766 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
767 | struct tty_struct *tty; | |
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); | |
779 | wake_up_interruptible(&priv->delta_msr_wait); | |
780 | ||
781 | if (!urb->actual_length) | |
782 | return; | |
783 | ||
784 | tty = tty_port_tty_get(&port->port); | |
785 | if (!tty) | |
786 | return; | |
787 | ||
d4fc4a7b AC |
788 | /* break takes precedence over parity, */ |
789 | /* which takes precedence over framing errors */ | |
790 | if (line_status & UART_BREAK_ERROR) | |
791 | tty_flag = TTY_BREAK; | |
792 | else if (line_status & UART_PARITY_ERROR) | |
793 | tty_flag = TTY_PARITY; | |
794 | else if (line_status & UART_FRAME_ERROR) | |
795 | tty_flag = TTY_FRAME; | |
796 | dbg("%s - tty_flag = %d", __func__, tty_flag); | |
797 | ||
d4fc4a7b AC |
798 | /* overrun is special, not associated with a char */ |
799 | if (line_status & UART_OVERRUN_ERROR) | |
800 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
9388e2e7 | 801 | |
d45cc8df | 802 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 803 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 804 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
d4fc4a7b | 805 | tty_insert_flip_char(tty, data[i], tty_flag); |
d45cc8df JH |
806 | } else { |
807 | tty_insert_flip_string_fixed_flag(tty, data, tty_flag, | |
808 | urb->actual_length); | |
9388e2e7 | 809 | } |
1da177e4 | 810 | |
f08e07ac | 811 | tty_flip_buffer_push(tty); |
4a90f09b | 812 | tty_kref_put(tty); |
1da177e4 LT |
813 | } |
814 | ||
572d3138 TG |
815 | /* All of the device info needed for the PL2303 SIO serial converter */ |
816 | static struct usb_serial_driver pl2303_device = { | |
817 | .driver = { | |
818 | .owner = THIS_MODULE, | |
819 | .name = "pl2303", | |
820 | }, | |
821 | .id_table = id_table, | |
d9b1b787 | 822 | .usb_driver = &pl2303_driver, |
572d3138 | 823 | .num_ports = 1, |
7919c2fd | 824 | .bulk_in_size = 256, |
3efeaff6 | 825 | .bulk_out_size = 256, |
572d3138 TG |
826 | .open = pl2303_open, |
827 | .close = pl2303_close, | |
335f8514 AC |
828 | .dtr_rts = pl2303_dtr_rts, |
829 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
830 | .ioctl = pl2303_ioctl, |
831 | .break_ctl = pl2303_break_ctl, | |
832 | .set_termios = pl2303_set_termios, | |
833 | .tiocmget = pl2303_tiocmget, | |
834 | .tiocmset = pl2303_tiocmset, | |
f08e07ac | 835 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 836 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 837 | .attach = pl2303_startup, |
f9c99bb8 | 838 | .release = pl2303_release, |
572d3138 | 839 | }; |
1da177e4 | 840 | |
372db8a7 | 841 | static int __init pl2303_init(void) |
1da177e4 LT |
842 | { |
843 | int retval; | |
372db8a7 | 844 | |
1da177e4 LT |
845 | retval = usb_serial_register(&pl2303_device); |
846 | if (retval) | |
847 | goto failed_usb_serial_register; | |
848 | retval = usb_register(&pl2303_driver); | |
849 | if (retval) | |
850 | goto failed_usb_register; | |
c197a8db | 851 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
852 | return 0; |
853 | failed_usb_register: | |
854 | usb_serial_deregister(&pl2303_device); | |
855 | failed_usb_serial_register: | |
856 | return retval; | |
857 | } | |
858 | ||
372db8a7 | 859 | static void __exit pl2303_exit(void) |
1da177e4 | 860 | { |
372db8a7 TG |
861 | usb_deregister(&pl2303_driver); |
862 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
863 | } |
864 | ||
1da177e4 LT |
865 | module_init(pl2303_init); |
866 | module_exit(pl2303_exit); | |
867 | ||
868 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
869 | MODULE_LICENSE("GPL"); |
870 | ||
871 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
872 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
873 |