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> |
b2d6d98f | 32 | #include <asm/unaligned.h> |
1da177e4 LT |
33 | #include "pl2303.h" |
34 | ||
35 | /* | |
36 | * Version Information | |
37 | */ | |
1da177e4 LT |
38 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
39 | ||
7d40d7e8 | 40 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
41 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
42 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, | |
3d861494 | 43 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
1da177e4 LT |
44 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
45 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, | |
b483b6aa | 46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
4be2fa18 | 47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
727df356 | 48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
18344a1c | 49 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
96a3e79e | 50 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
1da177e4 | 51 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
8a28dea3 | 52 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
1da177e4 LT |
53 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
54 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, | |
55 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, | |
56 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, | |
57 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, | |
58381719 | 58 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
1da177e4 LT |
59 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
60 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, | |
61 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, | |
62 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, | |
63 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, | |
64 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, | |
65 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, | |
66 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, | |
a8310f3b | 67 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
1da177e4 | 68 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
a8310f3b | 69 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
e7beb667 | 70 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
912299f6 | 71 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
acbb36f1 | 72 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
c6c27721 CL |
73 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
74 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, | |
6cceb05f | 75 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
c6c27721 | 76 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
491b04ce | 77 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
3b928474 | 78 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
b7aa94b6 | 79 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
8fd80133 | 80 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
2d94b981 | 81 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
9e3285db | 82 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
cc311ee7 | 83 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
7c992001 | 84 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
af4b8514 | 85 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
8540d666 | 86 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
f36ecd5d | 87 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
49276560 | 88 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
35904e6b | 89 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
9a61d726 | 90 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
598f0b70 | 91 | { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, |
1da177e4 LT |
92 | { } /* Terminating entry */ |
93 | }; | |
94 | ||
372db8a7 | 95 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 96 | |
1da177e4 LT |
97 | #define SET_LINE_REQUEST_TYPE 0x21 |
98 | #define SET_LINE_REQUEST 0x20 | |
99 | ||
100 | #define SET_CONTROL_REQUEST_TYPE 0x21 | |
101 | #define SET_CONTROL_REQUEST 0x22 | |
102 | #define CONTROL_DTR 0x01 | |
103 | #define CONTROL_RTS 0x02 | |
104 | ||
105 | #define BREAK_REQUEST_TYPE 0x21 | |
3a0f43e9 | 106 | #define BREAK_REQUEST 0x23 |
1da177e4 LT |
107 | #define BREAK_ON 0xffff |
108 | #define BREAK_OFF 0x0000 | |
109 | ||
110 | #define GET_LINE_REQUEST_TYPE 0xa1 | |
111 | #define GET_LINE_REQUEST 0x21 | |
112 | ||
113 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 | |
114 | #define VENDOR_WRITE_REQUEST 0x01 | |
115 | ||
116 | #define VENDOR_READ_REQUEST_TYPE 0xc0 | |
117 | #define VENDOR_READ_REQUEST 0x01 | |
118 | ||
119 | #define UART_STATE 0x08 | |
120 | #define UART_STATE_TRANSIENT_MASK 0x74 | |
121 | #define UART_DCD 0x01 | |
122 | #define UART_DSR 0x02 | |
123 | #define UART_BREAK_ERROR 0x04 | |
124 | #define UART_RING 0x08 | |
125 | #define UART_FRAME_ERROR 0x10 | |
126 | #define UART_PARITY_ERROR 0x20 | |
127 | #define UART_OVERRUN_ERROR 0x40 | |
128 | #define UART_CTS 0x80 | |
129 | ||
1da177e4 LT |
130 | |
131 | enum pl2303_type { | |
e8bbd5c4 GKH |
132 | type_0, /* don't know the difference between type 0 and */ |
133 | type_1, /* type 1, until someone from prolific tells us... */ | |
134 | HX, /* HX version of the pl2303 chip */ | |
1da177e4 LT |
135 | }; |
136 | ||
8bf769eb JH |
137 | struct pl2303_serial_private { |
138 | enum pl2303_type type; | |
139 | }; | |
140 | ||
1da177e4 LT |
141 | struct pl2303_private { |
142 | spinlock_t lock; | |
1da177e4 LT |
143 | u8 line_control; |
144 | u8 line_status; | |
623c8263 JH |
145 | |
146 | u8 line_settings[7]; | |
1da177e4 LT |
147 | }; |
148 | ||
eb44da0b SS |
149 | static int pl2303_vendor_read(__u16 value, __u16 index, |
150 | struct usb_serial *serial, unsigned char *buf) | |
151 | { | |
152 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
153 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
154 | value, index, buf, 1, 100); | |
7b5789a8 | 155 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", |
d8789b2b GKH |
156 | VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index, |
157 | res, buf[0]); | |
eb44da0b SS |
158 | return res; |
159 | } | |
160 | ||
161 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
162 | struct usb_serial *serial) | |
163 | { | |
164 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
165 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
166 | value, index, NULL, 0, 100); | |
7b5789a8 | 167 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n", |
d8789b2b GKH |
168 | VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index, |
169 | res); | |
eb44da0b SS |
170 | return res; |
171 | } | |
172 | ||
372db8a7 | 173 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 174 | { |
8bf769eb | 175 | struct pl2303_serial_private *spriv; |
1da177e4 | 176 | enum pl2303_type type = type_0; |
3e152505 | 177 | unsigned char *buf; |
8bf769eb JH |
178 | |
179 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
180 | if (!spriv) | |
181 | return -ENOMEM; | |
1da177e4 | 182 | |
3e152505 | 183 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
184 | if (!buf) { |
185 | kfree(spriv); | |
3e152505 | 186 | return -ENOMEM; |
8bf769eb | 187 | } |
3e152505 | 188 | |
b52e1113 | 189 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
1da177e4 | 190 | type = type_0; |
b52e1113 | 191 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) |
e8bbd5c4 | 192 | type = HX; |
281393ad GKH |
193 | else if (serial->dev->descriptor.bDeviceClass == 0x00) |
194 | type = type_1; | |
195 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
1da177e4 | 196 | type = type_1; |
b52e1113 | 197 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
1da177e4 | 198 | |
8bf769eb JH |
199 | spriv->type = type; |
200 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
201 | |
202 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
203 | pl2303_vendor_write(0x0404, 0, serial); | |
204 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
205 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
206 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
207 | pl2303_vendor_write(0x0404, 1, serial); | |
208 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
209 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
210 | pl2303_vendor_write(0, 1, serial); | |
211 | pl2303_vendor_write(1, 0, serial); | |
e8bbd5c4 | 212 | if (type == HX) |
034d1527 | 213 | pl2303_vendor_write(2, 0x44, serial); |
e8bbd5c4 GKH |
214 | else |
215 | pl2303_vendor_write(2, 0x24, serial); | |
3e152505 SS |
216 | |
217 | kfree(buf); | |
1da177e4 | 218 | return 0; |
8bf769eb | 219 | } |
1da177e4 | 220 | |
8bf769eb JH |
221 | static void pl2303_release(struct usb_serial *serial) |
222 | { | |
223 | struct pl2303_serial_private *spriv; | |
224 | ||
225 | spriv = usb_get_serial_data(serial); | |
226 | kfree(spriv); | |
227 | } | |
228 | ||
229 | static int pl2303_port_probe(struct usb_serial_port *port) | |
230 | { | |
231 | struct pl2303_private *priv; | |
232 | ||
233 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
234 | if (!priv) | |
235 | return -ENOMEM; | |
236 | ||
237 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
238 | |
239 | usb_set_serial_port_data(port, priv); | |
240 | ||
d7be6221 JH |
241 | port->port.drain_delay = 256; |
242 | ||
8bf769eb JH |
243 | return 0; |
244 | } | |
245 | ||
246 | static int pl2303_port_remove(struct usb_serial_port *port) | |
247 | { | |
248 | struct pl2303_private *priv; | |
249 | ||
250 | priv = usb_get_serial_port_data(port); | |
251 | kfree(priv); | |
252 | ||
253 | return 0; | |
1da177e4 LT |
254 | } |
255 | ||
f45d0a5a | 256 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 257 | { |
f45d0a5a | 258 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 259 | int retval; |
3a0f43e9 | 260 | |
372db8a7 TG |
261 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
262 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
263 | value, 0, NULL, 0, 100); | |
f45d0a5a | 264 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 265 | value, retval); |
1da177e4 LT |
266 | return retval; |
267 | } | |
268 | ||
15e7cead JH |
269 | static void pl2303_encode_baudrate(struct tty_struct *tty, |
270 | struct usb_serial_port *port, | |
271 | u8 buf[4]) | |
1da177e4 | 272 | { |
7e12a6fc GKH |
273 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
274 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
275 | 57600, 115200, 230400, 460800, 500000, 614400, | |
276 | 921600, 1228800, 2457600, 3000000, 6000000 }; | |
277 | ||
692ed4dd GKH |
278 | struct usb_serial *serial = port->serial; |
279 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
15e7cead | 280 | int baud; |
7e12a6fc | 281 | int i; |
1da177e4 | 282 | |
7e12a6fc GKH |
283 | /* |
284 | * NOTE: Only the values defined in baud_sup are supported! | |
285 | * => if unsupported values are set, the PL2303 seems to use | |
286 | * 9600 baud (at least my PL2303X always does) | |
287 | */ | |
95da310e | 288 | baud = tty_get_baud_rate(tty); |
d8789b2b | 289 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
b2d6d98f JH |
290 | if (!baud) |
291 | return; | |
692ed4dd | 292 | |
7e12a6fc GKH |
293 | /* Set baudrate to nearest supported value */ |
294 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { | |
295 | if (baud_sup[i] > baud) | |
296 | break; | |
297 | } | |
692ed4dd | 298 | |
7e12a6fc GKH |
299 | if (i == ARRAY_SIZE(baud_sup)) |
300 | baud = baud_sup[i - 1]; | |
301 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
302 | baud = baud_sup[i - 1]; | |
303 | else | |
304 | baud = baud_sup[i]; | |
692ed4dd | 305 | |
7e12a6fc GKH |
306 | /* type_0, type_1 only support up to 1228800 baud */ |
307 | if (spriv->type != HX) | |
308 | baud = min_t(int, baud, 1228800); | |
692ed4dd | 309 | |
54dc5792 | 310 | if (baud <= 115200) { |
692ed4dd GKH |
311 | put_unaligned_le32(baud, buf); |
312 | } else { | |
313 | /* | |
1796a228 GKH |
314 | * Apparently the formula for higher speeds is: |
315 | * baudrate = 12M * 32 / (2^buf[1]) / buf[0] | |
692ed4dd | 316 | */ |
1796a228 GKH |
317 | unsigned tmp = 12000000 * 32 / baud; |
318 | buf[3] = 0x80; | |
692ed4dd | 319 | buf[2] = 0; |
1796a228 GKH |
320 | buf[1] = (tmp >= 256); |
321 | while (tmp >= 256) { | |
322 | tmp >>= 2; | |
323 | buf[1] <<= 1; | |
324 | } | |
325 | buf[0] = tmp; | |
692ed4dd GKH |
326 | } |
327 | ||
15e7cead | 328 | /* Save resulting baud rate */ |
b2d6d98f JH |
329 | tty_encode_baud_rate(tty, baud, baud); |
330 | dev_dbg(&port->dev, "baud set = %d\n", baud); | |
15e7cead JH |
331 | } |
332 | ||
333 | static void pl2303_set_termios(struct tty_struct *tty, | |
334 | struct usb_serial_port *port, struct ktermios *old_termios) | |
335 | { | |
336 | struct usb_serial *serial = port->serial; | |
337 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
338 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
339 | unsigned long flags; | |
15e7cead JH |
340 | unsigned char *buf; |
341 | int i; | |
342 | u8 control; | |
343 | ||
15e7cead JH |
344 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
345 | return; | |
346 | ||
15e7cead JH |
347 | buf = kzalloc(7, GFP_KERNEL); |
348 | if (!buf) { | |
349 | dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
350 | /* Report back no change occurred */ | |
351 | if (old_termios) | |
352 | tty->termios = *old_termios; | |
353 | return; | |
354 | } | |
355 | ||
356 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
357 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
358 | 0, 0, buf, 7, 100); | |
359 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); | |
360 | ||
a3132499 CL |
361 | switch (C_CSIZE(tty)) { |
362 | case CS5: | |
363 | buf[6] = 5; | |
364 | break; | |
365 | case CS6: | |
366 | buf[6] = 6; | |
367 | break; | |
368 | case CS7: | |
369 | buf[6] = 7; | |
370 | break; | |
371 | default: | |
372 | case CS8: | |
373 | buf[6] = 8; | |
15e7cead | 374 | } |
a3132499 | 375 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); |
15e7cead | 376 | |
692ed4dd GKH |
377 | /* For reference buf[0]:buf[3] baud rate value */ |
378 | pl2303_encode_baudrate(tty, port, &buf[0]); | |
15e7cead | 379 | |
1da177e4 LT |
380 | /* For reference buf[4]=0 is 1 stop bits */ |
381 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
382 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
383 | if (C_CSTOPB(tty)) { |
384 | /* | |
385 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
386 | * use 1.5 instead of 2 stop bits with 5 data bits |
387 | */ | |
87265b45 | 388 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 389 | buf[4] = 1; |
d8789b2b | 390 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
391 | } else { |
392 | buf[4] = 2; | |
d8789b2b | 393 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 394 | } |
1da177e4 LT |
395 | } else { |
396 | buf[4] = 0; | |
d8789b2b | 397 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
398 | } |
399 | ||
87265b45 | 400 | if (C_PARENB(tty)) { |
1da177e4 LT |
401 | /* For reference buf[5]=0 is none parity */ |
402 | /* For reference buf[5]=1 is odd parity */ | |
403 | /* For reference buf[5]=2 is even parity */ | |
404 | /* For reference buf[5]=3 is mark parity */ | |
405 | /* For reference buf[5]=4 is space parity */ | |
87265b45 JH |
406 | if (C_PARODD(tty)) { |
407 | if (tty->termios.c_cflag & CMSPAR) { | |
6dd81b45 | 408 | buf[5] = 3; |
d8789b2b | 409 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
410 | } else { |
411 | buf[5] = 1; | |
d8789b2b | 412 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 413 | } |
1da177e4 | 414 | } else { |
87265b45 | 415 | if (tty->termios.c_cflag & CMSPAR) { |
6dd81b45 | 416 | buf[5] = 4; |
d8789b2b | 417 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
418 | } else { |
419 | buf[5] = 2; | |
d8789b2b | 420 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 421 | } |
1da177e4 LT |
422 | } |
423 | } else { | |
424 | buf[5] = 0; | |
d8789b2b | 425 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
426 | } |
427 | ||
623c8263 JH |
428 | /* |
429 | * Some PL2303 are known to lose bytes if you change serial settings | |
430 | * even to the same values as before. Thus we actually need to filter | |
431 | * in this specific case. | |
432 | * | |
433 | * Note that the tty_termios_hw_change check above is not sufficient | |
434 | * as a previously requested baud rate may differ from the one | |
435 | * actually used (and stored in old_termios). | |
436 | * | |
437 | * NOTE: No additional locking needed for line_settings as it is | |
438 | * only used in set_termios, which is serialised against itself. | |
439 | */ | |
440 | if (!old_termios || memcmp(buf, priv->line_settings, 7)) { | |
441 | i = usb_control_msg(serial->dev, | |
442 | usb_sndctrlpipe(serial->dev, 0), | |
443 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
444 | 0, 0, buf, 7, 100); | |
445 | ||
446 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); | |
447 | ||
448 | if (i == 7) | |
449 | memcpy(priv->line_settings, buf, 7); | |
450 | } | |
1da177e4 LT |
451 | |
452 | /* change control lines if we are switching to or from B0 */ | |
453 | spin_lock_irqsave(&priv->lock, flags); | |
454 | control = priv->line_control; | |
87265b45 | 455 | if (C_BAUD(tty) == B0) |
1da177e4 | 456 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 457 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
458 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
459 | if (control != priv->line_control) { | |
460 | control = priv->line_control; | |
461 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 462 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
463 | } else { |
464 | spin_unlock_irqrestore(&priv->lock, flags); | |
465 | } | |
372db8a7 | 466 | |
87265b45 | 467 | memset(buf, 0, 7); |
372db8a7 TG |
468 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
469 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
470 | 0, 0, buf, 7, 100); | |
715cf92a | 471 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 | 472 | |
87265b45 | 473 | if (C_CRTSCTS(tty)) { |
e8bbd5c4 | 474 | if (spriv->type == HX) |
034d1527 | 475 | pl2303_vendor_write(0x0, 0x61, serial); |
e8bbd5c4 GKH |
476 | else |
477 | pl2303_vendor_write(0x0, 0x41, serial); | |
715f9527 | 478 | } else { |
eb44da0b | 479 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 480 | } |
572d3138 TG |
481 | |
482 | kfree(buf); | |
483 | } | |
484 | ||
335f8514 AC |
485 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
486 | { | |
487 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
488 | unsigned long flags; | |
489 | u8 control; | |
490 | ||
491 | spin_lock_irqsave(&priv->lock, flags); | |
492 | /* Change DTR and RTS */ | |
493 | if (on) | |
494 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
495 | else | |
496 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
497 | control = priv->line_control; | |
498 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 499 | pl2303_set_control_lines(port, control); |
335f8514 AC |
500 | } |
501 | ||
502 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 503 | { |
8b0127b2 | 504 | usb_serial_generic_close(port); |
572d3138 | 505 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
506 | } |
507 | ||
a509a7e4 | 508 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 509 | { |
1da177e4 | 510 | struct usb_serial *serial = port->serial; |
8bf769eb | 511 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
512 | int result; |
513 | ||
e8bbd5c4 | 514 | if (spriv->type != HX) { |
1694899f D |
515 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
516 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 517 | } else { |
1da177e4 | 518 | /* reset upstream data pipes */ |
eb44da0b SS |
519 | pl2303_vendor_write(8, 0, serial); |
520 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
521 | } |
522 | ||
1da177e4 | 523 | /* Setup termios */ |
95da310e | 524 | if (tty) |
2d8f4447 | 525 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 526 | |
372db8a7 | 527 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 528 | if (result) { |
372db8a7 | 529 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 530 | " error %d\n", __func__, result); |
db6e9186 | 531 | return result; |
1da177e4 | 532 | } |
d4691c3f | 533 | |
f5230a53 | 534 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
535 | if (result) { |
536 | usb_kill_urb(port->interrupt_in_urb); | |
537 | return result; | |
538 | } | |
539 | ||
1da177e4 LT |
540 | return 0; |
541 | } | |
542 | ||
20b9d177 | 543 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 544 | unsigned int set, unsigned int clear) |
1da177e4 | 545 | { |
95da310e | 546 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
547 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
548 | unsigned long flags; | |
549 | u8 control; | |
6f1efd6c | 550 | int ret; |
6fdd8e8e | 551 | |
372db8a7 | 552 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
553 | if (set & TIOCM_RTS) |
554 | priv->line_control |= CONTROL_RTS; | |
555 | if (set & TIOCM_DTR) | |
556 | priv->line_control |= CONTROL_DTR; | |
557 | if (clear & TIOCM_RTS) | |
558 | priv->line_control &= ~CONTROL_RTS; | |
559 | if (clear & TIOCM_DTR) | |
560 | priv->line_control &= ~CONTROL_DTR; | |
561 | control = priv->line_control; | |
372db8a7 | 562 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 563 | |
5ddbb26b JH |
564 | ret = pl2303_set_control_lines(port, control); |
565 | if (ret) | |
566 | return usb_translate_errors(ret); | |
6f1efd6c | 567 | |
5ddbb26b | 568 | return 0; |
1da177e4 LT |
569 | } |
570 | ||
60b33c13 | 571 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 572 | { |
95da310e | 573 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
574 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
575 | unsigned long flags; | |
576 | unsigned int mcr; | |
577 | unsigned int status; | |
578 | unsigned int result; | |
579 | ||
372db8a7 | 580 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
581 | mcr = priv->line_control; |
582 | status = priv->line_status; | |
372db8a7 | 583 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
584 | |
585 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
586 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
587 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
588 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
589 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
590 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
591 | ||
d8789b2b | 592 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
593 | |
594 | return result; | |
595 | } | |
596 | ||
335f8514 AC |
597 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
598 | { | |
599 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
600 | if (priv->line_status & UART_DCD) | |
601 | return 1; | |
602 | return 0; | |
603 | } | |
604 | ||
824d11be | 605 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 606 | { |
824d11be | 607 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
608 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
609 | unsigned long flags; | |
610 | unsigned int prevstatus; | |
611 | unsigned int status; | |
612 | unsigned int changed; | |
613 | ||
372db8a7 | 614 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 615 | prevstatus = priv->line_status; |
372db8a7 | 616 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
617 | |
618 | while (1) { | |
6d0cad65 | 619 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
620 | /* see if a signal did it */ |
621 | if (signal_pending(current)) | |
622 | return -ERESTARTSYS; | |
372db8a7 | 623 | |
40509ca9 JH |
624 | if (port->serial->disconnected) |
625 | return -EIO; | |
626 | ||
372db8a7 | 627 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 628 | status = priv->line_status; |
372db8a7 TG |
629 | spin_unlock_irqrestore(&priv->lock, flags); |
630 | ||
3a0f43e9 | 631 | changed = prevstatus ^ status; |
372db8a7 | 632 | |
1da177e4 LT |
633 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
634 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
635 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 636 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
637 | return 0; |
638 | } | |
639 | prevstatus = status; | |
640 | } | |
641 | /* NOTREACHED */ | |
642 | return 0; | |
643 | } | |
644 | ||
00a0d0d6 | 645 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 646 | unsigned int cmd, unsigned long arg) |
1da177e4 | 647 | { |
67b9946d | 648 | struct serial_struct ser; |
95da310e | 649 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
650 | |
651 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
652 | |
653 | switch (cmd) { | |
67b9946d JT |
654 | case TIOCGSERIAL: |
655 | memset(&ser, 0, sizeof ser); | |
656 | ser.type = PORT_16654; | |
e5b1e206 | 657 | ser.line = port->minor; |
1143832e | 658 | ser.port = port->port_number; |
67b9946d JT |
659 | ser.baud_base = 460800; |
660 | ||
661 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
662 | return -EFAULT; | |
663 | ||
664 | return 0; | |
3a0f43e9 | 665 | default: |
d8789b2b | 666 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 667 | break; |
1da177e4 | 668 | } |
1da177e4 LT |
669 | return -ENOIOCTLCMD; |
670 | } | |
671 | ||
95da310e | 672 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 673 | { |
95da310e | 674 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
675 | struct usb_serial *serial = port->serial; |
676 | u16 state; | |
677 | int result; | |
678 | ||
1da177e4 LT |
679 | if (break_state == 0) |
680 | state = BREAK_OFF; | |
681 | else | |
682 | state = BREAK_ON; | |
d8789b2b | 683 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 684 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 685 | |
372db8a7 TG |
686 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
687 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
688 | 0, NULL, 0, 100); | |
1da177e4 | 689 | if (result) |
d8789b2b | 690 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
691 | } |
692 | ||
97bb13ec FL |
693 | static void pl2303_update_line_status(struct usb_serial_port *port, |
694 | unsigned char *data, | |
695 | unsigned int actual_length) | |
696 | { | |
697 | ||
698 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 699 | struct tty_struct *tty; |
97bb13ec FL |
700 | unsigned long flags; |
701 | u8 status_idx = UART_STATE; | |
95f209f9 | 702 | u8 length = UART_STATE + 1; |
d14fc1a7 | 703 | u8 prev_line_status; |
9c537616 | 704 | u16 idv, idp; |
97bb13ec | 705 | |
9c537616 TG |
706 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
707 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
708 | ||
709 | ||
710 | if (idv == SIEMENS_VENDOR_ID) { | |
711 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
712 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
713 | idp == SIEMENS_PRODUCT_ID_X75) { | |
714 | ||
715 | length = 1; | |
716 | status_idx = 0; | |
717 | } | |
97bb13ec FL |
718 | } |
719 | ||
720 | if (actual_length < length) | |
a009b75a | 721 | return; |
97bb13ec | 722 | |
3a0f43e9 | 723 | /* Save off the uart status for others to look at */ |
97bb13ec | 724 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 725 | prev_line_status = priv->line_status; |
97bb13ec FL |
726 | priv->line_status = data[status_idx]; |
727 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
728 | if (priv->line_status & UART_BREAK_ERROR) |
729 | usb_serial_handle_break(port); | |
6d0cad65 | 730 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
731 | |
732 | tty = tty_port_tty_get(&port->port); | |
733 | if (!tty) | |
734 | return; | |
735 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
736 | usb_serial_handle_dcd_change(port, tty, | |
737 | priv->line_status & UART_DCD); | |
738 | tty_kref_put(tty); | |
97bb13ec | 739 | } |
1da177e4 | 740 | |
7d12e780 | 741 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 742 | { |
cdc97792 | 743 | struct usb_serial_port *port = urb->context; |
1da177e4 | 744 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 745 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
746 | int status = urb->status; |
747 | int retval; | |
1da177e4 | 748 | |
461d696a | 749 | switch (status) { |
1da177e4 LT |
750 | case 0: |
751 | /* success */ | |
752 | break; | |
753 | case -ECONNRESET: | |
754 | case -ENOENT: | |
755 | case -ESHUTDOWN: | |
756 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
757 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
758 | __func__, status); | |
1da177e4 LT |
759 | return; |
760 | default: | |
d8789b2b GKH |
761 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
762 | __func__, status); | |
1da177e4 LT |
763 | goto exit; |
764 | } | |
765 | ||
59d33f2f | 766 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
767 | urb->actual_length, urb->transfer_buffer); |
768 | ||
97bb13ec | 769 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 770 | |
1da177e4 | 771 | exit: |
461d696a GKH |
772 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
773 | if (retval) | |
d8789b2b | 774 | dev_err(&port->dev, |
372db8a7 | 775 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 776 | __func__, retval); |
1da177e4 LT |
777 | } |
778 | ||
f08e07ac | 779 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 780 | { |
f08e07ac JH |
781 | struct usb_serial_port *port = urb->context; |
782 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 783 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 784 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
785 | unsigned long flags; |
786 | u8 line_status; | |
787 | int i; | |
788 | ||
789 | /* update line status */ | |
790 | spin_lock_irqsave(&priv->lock, flags); | |
791 | line_status = priv->line_status; | |
792 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
793 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 794 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
795 | |
796 | if (!urb->actual_length) | |
797 | return; | |
798 | ||
d4fc4a7b AC |
799 | /* break takes precedence over parity, */ |
800 | /* which takes precedence over framing errors */ | |
801 | if (line_status & UART_BREAK_ERROR) | |
802 | tty_flag = TTY_BREAK; | |
803 | else if (line_status & UART_PARITY_ERROR) | |
804 | tty_flag = TTY_PARITY; | |
805 | else if (line_status & UART_FRAME_ERROR) | |
806 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 807 | |
3ba19fe3 JH |
808 | if (tty_flag != TTY_NORMAL) |
809 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
810 | tty_flag); | |
d4fc4a7b AC |
811 | /* overrun is special, not associated with a char */ |
812 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 813 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 814 | |
d45cc8df | 815 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 816 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 817 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
818 | tty_insert_flip_char(&port->port, data[i], |
819 | tty_flag); | |
d45cc8df | 820 | } else { |
2f693357 | 821 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 822 | urb->actual_length); |
9388e2e7 | 823 | } |
1da177e4 | 824 | |
2e124b4a | 825 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
826 | } |
827 | ||
572d3138 TG |
828 | /* All of the device info needed for the PL2303 SIO serial converter */ |
829 | static struct usb_serial_driver pl2303_device = { | |
830 | .driver = { | |
831 | .owner = THIS_MODULE, | |
832 | .name = "pl2303", | |
833 | }, | |
834 | .id_table = id_table, | |
572d3138 | 835 | .num_ports = 1, |
7919c2fd | 836 | .bulk_in_size = 256, |
3efeaff6 | 837 | .bulk_out_size = 256, |
572d3138 TG |
838 | .open = pl2303_open, |
839 | .close = pl2303_close, | |
335f8514 AC |
840 | .dtr_rts = pl2303_dtr_rts, |
841 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
842 | .ioctl = pl2303_ioctl, |
843 | .break_ctl = pl2303_break_ctl, | |
844 | .set_termios = pl2303_set_termios, | |
845 | .tiocmget = pl2303_tiocmget, | |
846 | .tiocmset = pl2303_tiocmset, | |
824d11be | 847 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 848 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 849 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 850 | .attach = pl2303_startup, |
f9c99bb8 | 851 | .release = pl2303_release, |
8bf769eb JH |
852 | .port_probe = pl2303_port_probe, |
853 | .port_remove = pl2303_port_remove, | |
572d3138 | 854 | }; |
1da177e4 | 855 | |
f667ddad AS |
856 | static struct usb_serial_driver * const serial_drivers[] = { |
857 | &pl2303_device, NULL | |
858 | }; | |
859 | ||
68e24113 | 860 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
861 | |
862 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 863 | MODULE_LICENSE("GPL"); |