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Commit | Line | Data |
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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 | ||
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) }, |
1da177e4 | 53 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 54 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
55 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
56 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
57 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
58 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
59 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 60 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
61 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
62 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
63 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
64 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
65 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
66 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
67 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
68 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 69 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 70 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 71 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 72 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 73 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 74 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
75 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
76 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 77 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 78 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 79 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 80 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 81 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 82 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 83 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 84 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 85 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 86 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 87 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 88 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 89 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 90 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 91 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 92 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
1da177e4 LT |
93 | { } /* Terminating entry */ |
94 | }; | |
95 | ||
372db8a7 | 96 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 LT |
97 | |
98 | static struct usb_driver pl2303_driver = { | |
1da177e4 LT |
99 | .name = "pl2303", |
100 | .probe = usb_serial_probe, | |
101 | .disconnect = usb_serial_disconnect, | |
102 | .id_table = id_table, | |
fcf9e55e SS |
103 | .suspend = usb_serial_suspend, |
104 | .resume = usb_serial_resume, | |
ba9dc657 | 105 | .no_dynamic_id = 1, |
fcf9e55e | 106 | .supports_autosuspend = 1, |
1da177e4 LT |
107 | }; |
108 | ||
109 | #define SET_LINE_REQUEST_TYPE 0x21 | |
110 | #define SET_LINE_REQUEST 0x20 | |
111 | ||
112 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
113 | #define SET_CONTROL_REQUEST 0x22 | |
114 | #define CONTROL_DTR 0x01 | |
115 | #define CONTROL_RTS 0x02 | |
116 | ||
117 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 118 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
119 | #define BREAK_ON 0xffff |
120 | #define BREAK_OFF 0x0000 | |
121 | ||
122 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
123 | #define GET_LINE_REQUEST 0x21 | |
124 | ||
125 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
126 | #define VENDOR_WRITE_REQUEST 0x01 | |
127 | ||
128 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
129 | #define VENDOR_READ_REQUEST 0x01 | |
130 | ||
131 | #define UART_STATE 0x08 | |
132 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
133 | #define UART_DCD 0x01 | |
134 | #define UART_DSR 0x02 | |
135 | #define UART_BREAK_ERROR 0x04 | |
136 | #define UART_RING 0x08 | |
137 | #define UART_FRAME_ERROR 0x10 | |
138 | #define UART_PARITY_ERROR 0x20 | |
139 | #define UART_OVERRUN_ERROR 0x40 | |
140 | #define UART_CTS 0x80 | |
141 | ||
1da177e4 LT |
142 | |
143 | enum pl2303_type { | |
144 | type_0, /* don't know the difference between type 0 and */ | |
145 | type_1, /* type 1, until someone from prolific tells us... */ | |
146 | HX, /* HX version of the pl2303 chip */ | |
147 | }; | |
148 | ||
149 | struct pl2303_private { | |
150 | spinlock_t lock; | |
1da177e4 LT |
151 | wait_queue_head_t delta_msr_wait; |
152 | u8 line_control; | |
153 | u8 line_status; | |
1da177e4 LT |
154 | enum pl2303_type type; |
155 | }; | |
156 | ||
eb44da0b SS |
157 | static int pl2303_vendor_read(__u16 value, __u16 index, |
158 | struct usb_serial *serial, unsigned char *buf) | |
159 | { | |
160 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
161 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
162 | value, index, buf, 1, 100); | |
163 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, | |
164 | VENDOR_READ_REQUEST, value, index, res, buf[0]); | |
165 | return res; | |
166 | } | |
167 | ||
168 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
169 | struct usb_serial *serial) | |
170 | { | |
171 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
172 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
173 | value, index, NULL, 0, 100); | |
174 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, | |
175 | VENDOR_WRITE_REQUEST, value, index, res); | |
176 | return res; | |
177 | } | |
178 | ||
372db8a7 | 179 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 LT |
180 | { |
181 | struct pl2303_private *priv; | |
182 | enum pl2303_type type = type_0; | |
3e152505 | 183 | unsigned char *buf; |
1da177e4 LT |
184 | int i; |
185 | ||
3e152505 SS |
186 | buf = kmalloc(10, GFP_KERNEL); |
187 | if (buf == NULL) | |
188 | return -ENOMEM; | |
189 | ||
1da177e4 LT |
190 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
191 | type = type_0; | |
192 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
193 | type = HX; | |
194 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
195 | type = type_1; | |
196 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
197 | type = type_1; | |
198 | dbg("device type: %d", type); | |
199 | ||
200 | for (i = 0; i < serial->num_ports; ++i) { | |
80b6ca48 | 201 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
1da177e4 LT |
202 | if (!priv) |
203 | goto cleanup; | |
1da177e4 | 204 | spin_lock_init(&priv->lock); |
1da177e4 LT |
205 | init_waitqueue_head(&priv->delta_msr_wait); |
206 | priv->type = type; | |
207 | usb_set_serial_port_data(serial->port[i], priv); | |
208 | } | |
3e152505 SS |
209 | |
210 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
211 | pl2303_vendor_write(0x0404, 0, serial); | |
212 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
213 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
214 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
215 | pl2303_vendor_write(0x0404, 1, serial); | |
216 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
217 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
218 | pl2303_vendor_write(0, 1, serial); | |
219 | pl2303_vendor_write(1, 0, serial); | |
220 | if (type == HX) | |
221 | pl2303_vendor_write(2, 0x44, serial); | |
222 | else | |
223 | pl2303_vendor_write(2, 0x24, serial); | |
224 | ||
225 | kfree(buf); | |
1da177e4 LT |
226 | return 0; |
227 | ||
228 | cleanup: | |
3e152505 | 229 | kfree(buf); |
3a0f43e9 | 230 | for (--i; i >= 0; --i) { |
1da177e4 | 231 | priv = usb_get_serial_port_data(serial->port[i]); |
1da177e4 LT |
232 | kfree(priv); |
233 | usb_set_serial_port_data(serial->port[i], NULL); | |
234 | } | |
235 | return -ENOMEM; | |
236 | } | |
237 | ||
372db8a7 | 238 | static int set_control_lines(struct usb_device *dev, u8 value) |
1da177e4 LT |
239 | { |
240 | int retval; | |
3a0f43e9 | 241 | |
372db8a7 TG |
242 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
243 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
244 | value, 0, NULL, 0, 100); | |
441b62c1 | 245 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
1da177e4 LT |
246 | return retval; |
247 | } | |
248 | ||
95da310e AC |
249 | static void pl2303_set_termios(struct tty_struct *tty, |
250 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
251 | { |
252 | struct usb_serial *serial = port->serial; | |
253 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
254 | unsigned long flags; | |
255 | unsigned int cflag; | |
256 | unsigned char *buf; | |
257 | int baud; | |
258 | int i; | |
259 | u8 control; | |
25b82868 FS |
260 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
261 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
262 | 57600, 115200, 230400, 460800, 614400, | |
263 | 921600, 1228800, 2457600, 3000000, 6000000 }; | |
264 | int baud_floor, baud_ceil; | |
265 | int k; | |
1da177e4 | 266 | |
441b62c1 | 267 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 268 | |
bf5e5834 AC |
269 | /* The PL2303 is reported to lose bytes if you change |
270 | serial settings even to the same values as before. Thus | |
271 | we actually need to filter in this specific case */ | |
272 | ||
95da310e | 273 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
bf5e5834 AC |
274 | return; |
275 | ||
95da310e | 276 | cflag = tty->termios->c_cflag; |
1da177e4 | 277 | |
372db8a7 | 278 | buf = kzalloc(7, GFP_KERNEL); |
1da177e4 | 279 | if (!buf) { |
441b62c1 | 280 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
a5b6f60c | 281 | /* Report back no change occurred */ |
95da310e | 282 | *tty->termios = *old_termios; |
1da177e4 LT |
283 | return; |
284 | } | |
1da177e4 | 285 | |
372db8a7 TG |
286 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
287 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
288 | 0, 0, buf, 7, 100); | |
289 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
290 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); | |
1da177e4 LT |
291 | |
292 | if (cflag & CSIZE) { | |
293 | switch (cflag & CSIZE) { | |
3a0f43e9 AC |
294 | case CS5: |
295 | buf[6] = 5; | |
296 | break; | |
297 | case CS6: | |
298 | buf[6] = 6; | |
299 | break; | |
300 | case CS7: | |
301 | buf[6] = 7; | |
302 | break; | |
303 | default: | |
304 | case CS8: | |
305 | buf[6] = 8; | |
306 | break; | |
1da177e4 | 307 | } |
441b62c1 | 308 | dbg("%s - data bits = %d", __func__, buf[6]); |
1da177e4 LT |
309 | } |
310 | ||
25b82868 FS |
311 | /* For reference buf[0]:buf[3] baud rate value */ |
312 | /* NOTE: Only the values defined in baud_sup are supported ! | |
313 | * => if unsupported values are set, the PL2303 seems to use | |
314 | * 9600 baud (at least my PL2303X always does) | |
315 | */ | |
95da310e | 316 | baud = tty_get_baud_rate(tty); |
25b82868 | 317 | dbg("%s - baud requested = %d", __func__, baud); |
1da177e4 | 318 | if (baud) { |
25b82868 FS |
319 | /* Set baudrate to nearest supported value */ |
320 | for (k=0; k<ARRAY_SIZE(baud_sup); k++) { | |
321 | if (baud_sup[k] / baud) { | |
322 | baud_ceil = baud_sup[k]; | |
323 | if (k==0) { | |
324 | baud = baud_ceil; | |
325 | } else { | |
326 | baud_floor = baud_sup[k-1]; | |
327 | if ((baud_ceil % baud) | |
328 | > (baud % baud_floor)) | |
329 | baud = baud_floor; | |
330 | else | |
331 | baud = baud_ceil; | |
332 | } | |
333 | break; | |
334 | } | |
335 | } | |
336 | if (baud > 1228800) { | |
337 | /* type_0, type_1 only support up to 1228800 baud */ | |
338 | if (priv->type != HX) | |
339 | baud = 1228800; | |
340 | else if (baud > 6000000) | |
341 | baud = 6000000; | |
342 | } | |
343 | dbg("%s - baud set = %d", __func__, baud); | |
1da177e4 LT |
344 | buf[0] = baud & 0xff; |
345 | buf[1] = (baud >> 8) & 0xff; | |
346 | buf[2] = (baud >> 16) & 0xff; | |
347 | buf[3] = (baud >> 24) & 0xff; | |
348 | } | |
349 | ||
350 | /* For reference buf[4]=0 is 1 stop bits */ | |
351 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
352 | /* For reference buf[4]=2 is 2 stop bits */ | |
353 | if (cflag & CSTOPB) { | |
29cf1b72 FS |
354 | /* NOTE: Comply with "real" UARTs / RS232: |
355 | * use 1.5 instead of 2 stop bits with 5 data bits | |
356 | */ | |
357 | if ((cflag & CSIZE) == CS5) { | |
358 | buf[4] = 1; | |
359 | dbg("%s - stop bits = 1.5", __func__); | |
360 | } else { | |
361 | buf[4] = 2; | |
362 | dbg("%s - stop bits = 2", __func__); | |
363 | } | |
1da177e4 LT |
364 | } else { |
365 | buf[4] = 0; | |
441b62c1 | 366 | dbg("%s - stop bits = 1", __func__); |
1da177e4 LT |
367 | } |
368 | ||
369 | if (cflag & PARENB) { | |
370 | /* For reference buf[5]=0 is none parity */ | |
371 | /* For reference buf[5]=1 is odd parity */ | |
372 | /* For reference buf[5]=2 is even parity */ | |
373 | /* For reference buf[5]=3 is mark parity */ | |
374 | /* For reference buf[5]=4 is space parity */ | |
375 | if (cflag & PARODD) { | |
6dd81b45 FS |
376 | if (cflag & CMSPAR) { |
377 | buf[5] = 3; | |
378 | dbg("%s - parity = mark", __func__); | |
379 | } else { | |
380 | buf[5] = 1; | |
381 | dbg("%s - parity = odd", __func__); | |
382 | } | |
1da177e4 | 383 | } else { |
6dd81b45 FS |
384 | if (cflag & CMSPAR) { |
385 | buf[5] = 4; | |
386 | dbg("%s - parity = space", __func__); | |
387 | } else { | |
388 | buf[5] = 2; | |
389 | dbg("%s - parity = even", __func__); | |
390 | } | |
1da177e4 LT |
391 | } |
392 | } else { | |
393 | buf[5] = 0; | |
441b62c1 | 394 | dbg("%s - parity = none", __func__); |
1da177e4 LT |
395 | } |
396 | ||
372db8a7 TG |
397 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
398 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
399 | 0, 0, buf, 7, 100); | |
400 | dbg("0x21:0x20:0:0 %d", i); | |
1da177e4 LT |
401 | |
402 | /* change control lines if we are switching to or from B0 */ | |
403 | spin_lock_irqsave(&priv->lock, flags); | |
404 | control = priv->line_control; | |
405 | if ((cflag & CBAUD) == B0) | |
406 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
407 | else | |
408 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
409 | if (control != priv->line_control) { | |
410 | control = priv->line_control; | |
411 | spin_unlock_irqrestore(&priv->lock, flags); | |
412 | set_control_lines(serial->dev, control); | |
413 | } else { | |
414 | spin_unlock_irqrestore(&priv->lock, flags); | |
415 | } | |
372db8a7 | 416 | |
1da177e4 LT |
417 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
418 | ||
372db8a7 TG |
419 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
420 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
421 | 0, 0, buf, 7, 100); | |
422 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, | |
1da177e4 LT |
423 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
424 | ||
425 | if (cflag & CRTSCTS) { | |
1da177e4 | 426 | if (priv->type == HX) |
eb44da0b | 427 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 428 | else |
eb44da0b | 429 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 430 | } else { |
eb44da0b | 431 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 432 | } |
572d3138 | 433 | |
25b82868 | 434 | /* Save resulting baud rate */ |
df64c471 | 435 | if (baud) |
95da310e | 436 | tty_encode_baud_rate(tty, baud, baud); |
df64c471 | 437 | |
572d3138 TG |
438 | kfree(buf); |
439 | } | |
440 | ||
335f8514 AC |
441 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
442 | { | |
443 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
444 | unsigned long flags; | |
445 | u8 control; | |
446 | ||
447 | spin_lock_irqsave(&priv->lock, flags); | |
448 | /* Change DTR and RTS */ | |
449 | if (on) | |
450 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
451 | else | |
452 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
453 | control = priv->line_control; | |
454 | spin_unlock_irqrestore(&priv->lock, flags); | |
455 | set_control_lines(port->serial->dev, control); | |
456 | } | |
457 | ||
458 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 459 | { |
441b62c1 | 460 | dbg("%s - port %d", __func__, port->number); |
572d3138 | 461 | |
8b0127b2 | 462 | usb_serial_generic_close(port); |
572d3138 | 463 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
464 | } |
465 | ||
a509a7e4 | 466 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 467 | { |
606d099c | 468 | struct ktermios tmp_termios; |
1da177e4 LT |
469 | struct usb_serial *serial = port->serial; |
470 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
1da177e4 LT |
471 | int result; |
472 | ||
441b62c1 | 473 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 474 | |
1694899f D |
475 | if (priv->type != HX) { |
476 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
477 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 478 | } else { |
1da177e4 | 479 | /* reset upstream data pipes */ |
eb44da0b SS |
480 | pl2303_vendor_write(8, 0, serial); |
481 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
482 | } |
483 | ||
1da177e4 | 484 | /* Setup termios */ |
95da310e AC |
485 | if (tty) |
486 | pl2303_set_termios(tty, port, &tmp_termios); | |
1da177e4 | 487 | |
441b62c1 | 488 | dbg("%s - submitting read urb", __func__); |
f08e07ac | 489 | result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL); |
1da177e4 | 490 | if (result) { |
335f8514 | 491 | pl2303_close(port); |
1da177e4 LT |
492 | return -EPROTO; |
493 | } | |
494 | ||
441b62c1 | 495 | dbg("%s - submitting interrupt urb", __func__); |
372db8a7 | 496 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 497 | if (result) { |
372db8a7 | 498 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 499 | " error %d\n", __func__, result); |
335f8514 | 500 | pl2303_close(port); |
1da177e4 LT |
501 | return -EPROTO; |
502 | } | |
335f8514 | 503 | port->port.drain_delay = 256; |
1da177e4 LT |
504 | return 0; |
505 | } | |
506 | ||
95da310e | 507 | static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, |
372db8a7 | 508 | unsigned int set, unsigned int clear) |
1da177e4 | 509 | { |
95da310e | 510 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
511 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
512 | unsigned long flags; | |
513 | u8 control; | |
514 | ||
6fdd8e8e FL |
515 | if (!usb_get_intfdata(port->serial->interface)) |
516 | return -ENODEV; | |
517 | ||
372db8a7 | 518 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
519 | if (set & TIOCM_RTS) |
520 | priv->line_control |= CONTROL_RTS; | |
521 | if (set & TIOCM_DTR) | |
522 | priv->line_control |= CONTROL_DTR; | |
523 | if (clear & TIOCM_RTS) | |
524 | priv->line_control &= ~CONTROL_RTS; | |
525 | if (clear & TIOCM_DTR) | |
526 | priv->line_control &= ~CONTROL_DTR; | |
527 | control = priv->line_control; | |
372db8a7 | 528 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 529 | |
372db8a7 | 530 | return set_control_lines(port->serial->dev, control); |
1da177e4 LT |
531 | } |
532 | ||
95da310e | 533 | static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 534 | { |
95da310e | 535 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
536 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
537 | unsigned long flags; | |
538 | unsigned int mcr; | |
539 | unsigned int status; | |
540 | unsigned int result; | |
541 | ||
441b62c1 | 542 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 543 | |
6fdd8e8e FL |
544 | if (!usb_get_intfdata(port->serial->interface)) |
545 | return -ENODEV; | |
546 | ||
372db8a7 | 547 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
548 | mcr = priv->line_control; |
549 | status = priv->line_status; | |
372db8a7 | 550 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
551 | |
552 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
553 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
554 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
555 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
556 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
557 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
558 | ||
441b62c1 | 559 | dbg("%s - result = %x", __func__, result); |
1da177e4 LT |
560 | |
561 | return result; | |
562 | } | |
563 | ||
335f8514 AC |
564 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
565 | { | |
566 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
567 | if (priv->line_status & UART_DCD) | |
568 | return 1; | |
569 | return 0; | |
570 | } | |
571 | ||
1da177e4 LT |
572 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) |
573 | { | |
574 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
575 | unsigned long flags; | |
576 | unsigned int prevstatus; | |
577 | unsigned int status; | |
578 | unsigned int changed; | |
579 | ||
372db8a7 | 580 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 581 | prevstatus = priv->line_status; |
372db8a7 | 582 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
583 | |
584 | while (1) { | |
585 | interruptible_sleep_on(&priv->delta_msr_wait); | |
586 | /* see if a signal did it */ | |
587 | if (signal_pending(current)) | |
588 | return -ERESTARTSYS; | |
372db8a7 TG |
589 | |
590 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 591 | status = priv->line_status; |
372db8a7 TG |
592 | spin_unlock_irqrestore(&priv->lock, flags); |
593 | ||
3a0f43e9 | 594 | changed = prevstatus ^ status; |
372db8a7 | 595 | |
1da177e4 LT |
596 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
597 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
598 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 599 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
600 | return 0; |
601 | } | |
602 | prevstatus = status; | |
603 | } | |
604 | /* NOTREACHED */ | |
605 | return 0; | |
606 | } | |
607 | ||
95da310e | 608 | static int pl2303_ioctl(struct tty_struct *tty, struct file *file, |
372db8a7 | 609 | unsigned int cmd, unsigned long arg) |
1da177e4 | 610 | { |
67b9946d | 611 | struct serial_struct ser; |
95da310e | 612 | struct usb_serial_port *port = tty->driver_data; |
441b62c1 | 613 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
1da177e4 LT |
614 | |
615 | switch (cmd) { | |
67b9946d JT |
616 | case TIOCGSERIAL: |
617 | memset(&ser, 0, sizeof ser); | |
618 | ser.type = PORT_16654; | |
619 | ser.line = port->serial->minor; | |
620 | ser.port = port->number; | |
621 | ser.baud_base = 460800; | |
622 | ||
623 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
624 | return -EFAULT; | |
625 | ||
626 | return 0; | |
627 | ||
3a0f43e9 AC |
628 | case TIOCMIWAIT: |
629 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
630 | return wait_modem_info(port, arg); | |
631 | default: | |
632 | dbg("%s not supported = 0x%04x", __func__, cmd); | |
633 | break; | |
1da177e4 | 634 | } |
1da177e4 LT |
635 | return -ENOIOCTLCMD; |
636 | } | |
637 | ||
95da310e | 638 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 639 | { |
95da310e | 640 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
641 | struct usb_serial *serial = port->serial; |
642 | u16 state; | |
643 | int result; | |
644 | ||
441b62c1 | 645 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
646 | |
647 | if (break_state == 0) | |
648 | state = BREAK_OFF; | |
649 | else | |
650 | state = BREAK_ON; | |
3a0f43e9 AC |
651 | dbg("%s - turning break %s", __func__, |
652 | state == BREAK_OFF ? "off" : "on"); | |
1da177e4 | 653 | |
372db8a7 TG |
654 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
655 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
656 | 0, NULL, 0, 100); | |
1da177e4 | 657 | if (result) |
441b62c1 | 658 | dbg("%s - error sending break = %d", __func__, result); |
1da177e4 LT |
659 | } |
660 | ||
f9c99bb8 | 661 | static void pl2303_release(struct usb_serial *serial) |
1da177e4 LT |
662 | { |
663 | int i; | |
664 | struct pl2303_private *priv; | |
665 | ||
441b62c1 | 666 | dbg("%s", __func__); |
1da177e4 LT |
667 | |
668 | for (i = 0; i < serial->num_ports; ++i) { | |
669 | priv = usb_get_serial_port_data(serial->port[i]); | |
684c6e30 | 670 | kfree(priv); |
372db8a7 | 671 | } |
1da177e4 LT |
672 | } |
673 | ||
97bb13ec FL |
674 | static void pl2303_update_line_status(struct usb_serial_port *port, |
675 | unsigned char *data, | |
676 | unsigned int actual_length) | |
677 | { | |
678 | ||
679 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
680 | unsigned long flags; | |
681 | u8 status_idx = UART_STATE; | |
95f209f9 | 682 | u8 length = UART_STATE + 1; |
9c537616 | 683 | u16 idv, idp; |
97bb13ec | 684 | |
9c537616 TG |
685 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
686 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
687 | ||
688 | ||
689 | if (idv == SIEMENS_VENDOR_ID) { | |
690 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
691 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
692 | idp == SIEMENS_PRODUCT_ID_X75) { | |
693 | ||
694 | length = 1; | |
695 | status_idx = 0; | |
696 | } | |
97bb13ec FL |
697 | } |
698 | ||
699 | if (actual_length < length) | |
a009b75a | 700 | return; |
97bb13ec | 701 | |
3a0f43e9 | 702 | /* Save off the uart status for others to look at */ |
97bb13ec FL |
703 | spin_lock_irqsave(&priv->lock, flags); |
704 | priv->line_status = data[status_idx]; | |
705 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
706 | if (priv->line_status & UART_BREAK_ERROR) |
707 | usb_serial_handle_break(port); | |
372db8a7 | 708 | wake_up_interruptible(&priv->delta_msr_wait); |
97bb13ec | 709 | } |
1da177e4 | 710 | |
7d12e780 | 711 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 712 | { |
cdc97792 | 713 | struct usb_serial_port *port = urb->context; |
1da177e4 | 714 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 715 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
716 | int status = urb->status; |
717 | int retval; | |
1da177e4 | 718 | |
441b62c1 | 719 | dbg("%s (%d)", __func__, port->number); |
1da177e4 | 720 | |
461d696a | 721 | switch (status) { |
1da177e4 LT |
722 | case 0: |
723 | /* success */ | |
724 | break; | |
725 | case -ECONNRESET: | |
726 | case -ENOENT: | |
727 | case -ESHUTDOWN: | |
728 | /* this urb is terminated, clean up */ | |
441b62c1 | 729 | dbg("%s - urb shutting down with status: %d", __func__, |
461d696a | 730 | status); |
1da177e4 LT |
731 | return; |
732 | default: | |
441b62c1 | 733 | dbg("%s - nonzero urb status received: %d", __func__, |
461d696a | 734 | status); |
1da177e4 LT |
735 | goto exit; |
736 | } | |
737 | ||
441b62c1 | 738 | usb_serial_debug_data(debug, &port->dev, __func__, |
372db8a7 TG |
739 | urb->actual_length, urb->transfer_buffer); |
740 | ||
97bb13ec | 741 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 742 | |
1da177e4 | 743 | exit: |
461d696a GKH |
744 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
745 | if (retval) | |
372db8a7 TG |
746 | dev_err(&urb->dev->dev, |
747 | "%s - usb_submit_urb failed with result %d\n", | |
441b62c1 | 748 | __func__, retval); |
1da177e4 LT |
749 | } |
750 | ||
f08e07ac | 751 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 752 | { |
f08e07ac JH |
753 | struct usb_serial_port *port = urb->context; |
754 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
755 | struct tty_struct *tty; | |
d4fc4a7b | 756 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 757 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
758 | unsigned long flags; |
759 | u8 line_status; | |
760 | int i; | |
761 | ||
762 | /* update line status */ | |
763 | spin_lock_irqsave(&priv->lock, flags); | |
764 | line_status = priv->line_status; | |
765 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
766 | spin_unlock_irqrestore(&priv->lock, flags); | |
767 | wake_up_interruptible(&priv->delta_msr_wait); | |
768 | ||
769 | if (!urb->actual_length) | |
770 | return; | |
771 | ||
772 | tty = tty_port_tty_get(&port->port); | |
773 | if (!tty) | |
774 | return; | |
775 | ||
d4fc4a7b AC |
776 | /* break takes precedence over parity, */ |
777 | /* which takes precedence over framing errors */ | |
778 | if (line_status & UART_BREAK_ERROR) | |
779 | tty_flag = TTY_BREAK; | |
780 | else if (line_status & UART_PARITY_ERROR) | |
781 | tty_flag = TTY_PARITY; | |
782 | else if (line_status & UART_FRAME_ERROR) | |
783 | tty_flag = TTY_FRAME; | |
784 | dbg("%s - tty_flag = %d", __func__, tty_flag); | |
785 | ||
d4fc4a7b AC |
786 | /* overrun is special, not associated with a char */ |
787 | if (line_status & UART_OVERRUN_ERROR) | |
788 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
9388e2e7 | 789 | |
d45cc8df | 790 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 791 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 792 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
d4fc4a7b | 793 | tty_insert_flip_char(tty, data[i], tty_flag); |
d45cc8df JH |
794 | } else { |
795 | tty_insert_flip_string_fixed_flag(tty, data, tty_flag, | |
796 | urb->actual_length); | |
9388e2e7 | 797 | } |
1da177e4 | 798 | |
f08e07ac | 799 | tty_flip_buffer_push(tty); |
4a90f09b | 800 | tty_kref_put(tty); |
1da177e4 LT |
801 | } |
802 | ||
572d3138 TG |
803 | /* All of the device info needed for the PL2303 SIO serial converter */ |
804 | static struct usb_serial_driver pl2303_device = { | |
805 | .driver = { | |
806 | .owner = THIS_MODULE, | |
807 | .name = "pl2303", | |
808 | }, | |
809 | .id_table = id_table, | |
d9b1b787 | 810 | .usb_driver = &pl2303_driver, |
572d3138 | 811 | .num_ports = 1, |
7919c2fd | 812 | .bulk_in_size = 256, |
3efeaff6 | 813 | .bulk_out_size = 256, |
572d3138 TG |
814 | .open = pl2303_open, |
815 | .close = pl2303_close, | |
335f8514 AC |
816 | .dtr_rts = pl2303_dtr_rts, |
817 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
818 | .ioctl = pl2303_ioctl, |
819 | .break_ctl = pl2303_break_ctl, | |
820 | .set_termios = pl2303_set_termios, | |
821 | .tiocmget = pl2303_tiocmget, | |
822 | .tiocmset = pl2303_tiocmset, | |
f08e07ac | 823 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 824 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 825 | .attach = pl2303_startup, |
f9c99bb8 | 826 | .release = pl2303_release, |
572d3138 | 827 | }; |
1da177e4 | 828 | |
372db8a7 | 829 | static int __init pl2303_init(void) |
1da177e4 LT |
830 | { |
831 | int retval; | |
372db8a7 | 832 | |
1da177e4 LT |
833 | retval = usb_serial_register(&pl2303_device); |
834 | if (retval) | |
835 | goto failed_usb_serial_register; | |
836 | retval = usb_register(&pl2303_driver); | |
837 | if (retval) | |
838 | goto failed_usb_register; | |
c197a8db | 839 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
840 | return 0; |
841 | failed_usb_register: | |
842 | usb_serial_deregister(&pl2303_device); | |
843 | failed_usb_serial_register: | |
844 | return retval; | |
845 | } | |
846 | ||
372db8a7 | 847 | static void __exit pl2303_exit(void) |
1da177e4 | 848 | { |
372db8a7 TG |
849 | usb_deregister(&pl2303_driver); |
850 | usb_serial_deregister(&pl2303_device); | |
1da177e4 LT |
851 | } |
852 | ||
1da177e4 LT |
853 | module_init(pl2303_init); |
854 | module_exit(pl2303_exit); | |
855 | ||
856 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
857 | MODULE_LICENSE("GPL"); |
858 | ||
859 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
860 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
861 |