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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> |
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 { | |
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 */ | |
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; | |
1da177e4 LT |
145 | }; |
146 | ||
eb44da0b SS |
147 | static int pl2303_vendor_read(__u16 value, __u16 index, |
148 | struct usb_serial *serial, unsigned char *buf) | |
149 | { | |
150 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
151 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, | |
152 | value, index, buf, 1, 100); | |
7b5789a8 | 153 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n", |
d8789b2b GKH |
154 | VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index, |
155 | res, buf[0]); | |
eb44da0b SS |
156 | return res; |
157 | } | |
158 | ||
159 | static int pl2303_vendor_write(__u16 value, __u16 index, | |
160 | struct usb_serial *serial) | |
161 | { | |
162 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
163 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, | |
164 | value, index, NULL, 0, 100); | |
7b5789a8 | 165 | dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n", |
d8789b2b GKH |
166 | VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index, |
167 | res); | |
eb44da0b SS |
168 | return res; |
169 | } | |
170 | ||
372db8a7 | 171 | static int pl2303_startup(struct usb_serial *serial) |
1da177e4 | 172 | { |
8bf769eb | 173 | struct pl2303_serial_private *spriv; |
1da177e4 | 174 | enum pl2303_type type = type_0; |
3e152505 | 175 | unsigned char *buf; |
8bf769eb JH |
176 | |
177 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); | |
178 | if (!spriv) | |
179 | return -ENOMEM; | |
1da177e4 | 180 | |
3e152505 | 181 | buf = kmalloc(10, GFP_KERNEL); |
8bf769eb JH |
182 | if (!buf) { |
183 | kfree(spriv); | |
3e152505 | 184 | return -ENOMEM; |
8bf769eb | 185 | } |
3e152505 | 186 | |
1da177e4 LT |
187 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
188 | type = type_0; | |
189 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) | |
190 | type = HX; | |
191 | else if (serial->dev->descriptor.bDeviceClass == 0x00) | |
192 | type = type_1; | |
193 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) | |
194 | type = type_1; | |
d8789b2b | 195 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
1da177e4 | 196 | |
8bf769eb JH |
197 | spriv->type = type; |
198 | usb_set_serial_data(serial, spriv); | |
3e152505 SS |
199 | |
200 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
201 | pl2303_vendor_write(0x0404, 0, serial); | |
202 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
203 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
204 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
205 | pl2303_vendor_write(0x0404, 1, serial); | |
206 | pl2303_vendor_read(0x8484, 0, serial, buf); | |
207 | pl2303_vendor_read(0x8383, 0, serial, buf); | |
208 | pl2303_vendor_write(0, 1, serial); | |
209 | pl2303_vendor_write(1, 0, serial); | |
210 | if (type == HX) | |
211 | pl2303_vendor_write(2, 0x44, serial); | |
212 | else | |
213 | pl2303_vendor_write(2, 0x24, serial); | |
214 | ||
215 | kfree(buf); | |
1da177e4 | 216 | return 0; |
8bf769eb | 217 | } |
1da177e4 | 218 | |
8bf769eb JH |
219 | static void pl2303_release(struct usb_serial *serial) |
220 | { | |
221 | struct pl2303_serial_private *spriv; | |
222 | ||
223 | spriv = usb_get_serial_data(serial); | |
224 | kfree(spriv); | |
225 | } | |
226 | ||
227 | static int pl2303_port_probe(struct usb_serial_port *port) | |
228 | { | |
229 | struct pl2303_private *priv; | |
230 | ||
231 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
232 | if (!priv) | |
233 | return -ENOMEM; | |
234 | ||
235 | spin_lock_init(&priv->lock); | |
8bf769eb JH |
236 | |
237 | usb_set_serial_port_data(port, priv); | |
238 | ||
d7be6221 JH |
239 | port->port.drain_delay = 256; |
240 | ||
8bf769eb JH |
241 | return 0; |
242 | } | |
243 | ||
244 | static int pl2303_port_remove(struct usb_serial_port *port) | |
245 | { | |
246 | struct pl2303_private *priv; | |
247 | ||
248 | priv = usb_get_serial_port_data(port); | |
249 | kfree(priv); | |
250 | ||
251 | return 0; | |
1da177e4 LT |
252 | } |
253 | ||
f45d0a5a | 254 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
1da177e4 | 255 | { |
f45d0a5a | 256 | struct usb_device *dev = port->serial->dev; |
1da177e4 | 257 | int retval; |
3a0f43e9 | 258 | |
372db8a7 TG |
259 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
260 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, | |
261 | value, 0, NULL, 0, 100); | |
f45d0a5a | 262 | dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__, |
d8789b2b | 263 | value, retval); |
1da177e4 LT |
264 | return retval; |
265 | } | |
266 | ||
15e7cead JH |
267 | static void pl2303_encode_baudrate(struct tty_struct *tty, |
268 | struct usb_serial_port *port, | |
269 | u8 buf[4]) | |
1da177e4 | 270 | { |
25b82868 FS |
271 | const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600, |
272 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, | |
0c967e7e | 273 | 57600, 115200, 230400, 460800, 500000, 614400, |
25b82868 | 274 | 921600, 1228800, 2457600, 3000000, 6000000 }; |
15e7cead JH |
275 | |
276 | struct usb_serial *serial = port->serial; | |
277 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
278 | int baud; | |
b2d6d98f | 279 | int i; |
1da177e4 | 280 | |
b2d6d98f JH |
281 | /* |
282 | * NOTE: Only the values defined in baud_sup are supported! | |
25b82868 FS |
283 | * => if unsupported values are set, the PL2303 seems to use |
284 | * 9600 baud (at least my PL2303X always does) | |
285 | */ | |
95da310e | 286 | baud = tty_get_baud_rate(tty); |
d8789b2b | 287 | dev_dbg(&port->dev, "baud requested = %d\n", baud); |
b2d6d98f JH |
288 | if (!baud) |
289 | return; | |
290 | ||
291 | /* Set baudrate to nearest supported value */ | |
292 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { | |
293 | if (baud_sup[i] > baud) | |
294 | break; | |
295 | } | |
296 | ||
297 | if (i == ARRAY_SIZE(baud_sup)) | |
298 | baud = baud_sup[i - 1]; | |
299 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) | |
300 | baud = baud_sup[i - 1]; | |
301 | else | |
302 | baud = baud_sup[i]; | |
303 | ||
304 | /* type_0, type_1 only support up to 1228800 baud */ | |
305 | if (spriv->type != HX) | |
02f00c4a | 306 | baud = min_t(int, baud, 1228800); |
b2d6d98f | 307 | |
b8bdad60 FS |
308 | if (spriv->type != HX || baud <= 115200) { |
309 | /* Direct (standard) baud rate encoding method */ | |
b2d6d98f JH |
310 | put_unaligned_le32(baud, buf); |
311 | } else { | |
312 | /* | |
b8bdad60 FS |
313 | * NOTE: it's not clear if the type_0/1 chips |
314 | * support this method | |
315 | * | |
b2d6d98f JH |
316 | * Apparently the formula for higher speeds is: |
317 | * baudrate = 12M * 32 / (2^buf[1]) / buf[0] | |
318 | */ | |
319 | unsigned tmp = 12000000 * 32 / baud; | |
320 | buf[3] = 0x80; | |
321 | buf[2] = 0; | |
322 | buf[1] = (tmp >= 256); | |
323 | while (tmp >= 256) { | |
324 | tmp >>= 2; | |
325 | buf[1] <<= 1; | |
8d48fdf6 | 326 | } |
b2d6d98f | 327 | buf[0] = tmp; |
1da177e4 LT |
328 | } |
329 | ||
15e7cead | 330 | /* Save resulting baud rate */ |
b2d6d98f JH |
331 | tty_encode_baud_rate(tty, baud, baud); |
332 | dev_dbg(&port->dev, "baud set = %d\n", baud); | |
15e7cead JH |
333 | } |
334 | ||
335 | static void pl2303_set_termios(struct tty_struct *tty, | |
336 | struct usb_serial_port *port, struct ktermios *old_termios) | |
337 | { | |
338 | struct usb_serial *serial = port->serial; | |
339 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); | |
340 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
341 | unsigned long flags; | |
15e7cead JH |
342 | unsigned char *buf; |
343 | int i; | |
344 | u8 control; | |
345 | ||
87265b45 JH |
346 | /* |
347 | * The PL2303 is reported to lose bytes if you change serial settings | |
348 | * even to the same values as before. Thus we actually need to filter | |
349 | * in this specific case. | |
350 | */ | |
15e7cead JH |
351 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
352 | return; | |
353 | ||
15e7cead JH |
354 | buf = kzalloc(7, GFP_KERNEL); |
355 | if (!buf) { | |
356 | dev_err(&port->dev, "%s - out of memory.\n", __func__); | |
357 | /* Report back no change occurred */ | |
358 | if (old_termios) | |
359 | tty->termios = *old_termios; | |
360 | return; | |
361 | } | |
362 | ||
363 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
364 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
365 | 0, 0, buf, 7, 100); | |
366 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); | |
367 | ||
87265b45 JH |
368 | if (C_CSIZE(tty)) { |
369 | switch (C_CSIZE(tty)) { | |
15e7cead JH |
370 | case CS5: |
371 | buf[6] = 5; | |
372 | break; | |
373 | case CS6: | |
374 | buf[6] = 6; | |
375 | break; | |
376 | case CS7: | |
377 | buf[6] = 7; | |
378 | break; | |
379 | default: | |
380 | case CS8: | |
381 | buf[6] = 8; | |
15e7cead JH |
382 | } |
383 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); | |
384 | } | |
385 | ||
386 | /* For reference buf[0]:buf[3] baud rate value */ | |
387 | pl2303_encode_baudrate(tty, port, &buf[0]); | |
388 | ||
1da177e4 LT |
389 | /* For reference buf[4]=0 is 1 stop bits */ |
390 | /* For reference buf[4]=1 is 1.5 stop bits */ | |
391 | /* For reference buf[4]=2 is 2 stop bits */ | |
87265b45 JH |
392 | if (C_CSTOPB(tty)) { |
393 | /* | |
394 | * NOTE: Comply with "real" UARTs / RS232: | |
29cf1b72 FS |
395 | * use 1.5 instead of 2 stop bits with 5 data bits |
396 | */ | |
87265b45 | 397 | if (C_CSIZE(tty) == CS5) { |
29cf1b72 | 398 | buf[4] = 1; |
d8789b2b | 399 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
29cf1b72 FS |
400 | } else { |
401 | buf[4] = 2; | |
d8789b2b | 402 | dev_dbg(&port->dev, "stop bits = 2\n"); |
29cf1b72 | 403 | } |
1da177e4 LT |
404 | } else { |
405 | buf[4] = 0; | |
d8789b2b | 406 | dev_dbg(&port->dev, "stop bits = 1\n"); |
1da177e4 LT |
407 | } |
408 | ||
87265b45 | 409 | if (C_PARENB(tty)) { |
1da177e4 LT |
410 | /* For reference buf[5]=0 is none parity */ |
411 | /* For reference buf[5]=1 is odd parity */ | |
412 | /* For reference buf[5]=2 is even parity */ | |
413 | /* For reference buf[5]=3 is mark parity */ | |
414 | /* For reference buf[5]=4 is space parity */ | |
87265b45 JH |
415 | if (C_PARODD(tty)) { |
416 | if (tty->termios.c_cflag & CMSPAR) { | |
6dd81b45 | 417 | buf[5] = 3; |
d8789b2b | 418 | dev_dbg(&port->dev, "parity = mark\n"); |
6dd81b45 FS |
419 | } else { |
420 | buf[5] = 1; | |
d8789b2b | 421 | dev_dbg(&port->dev, "parity = odd\n"); |
6dd81b45 | 422 | } |
1da177e4 | 423 | } else { |
87265b45 | 424 | if (tty->termios.c_cflag & CMSPAR) { |
6dd81b45 | 425 | buf[5] = 4; |
d8789b2b | 426 | dev_dbg(&port->dev, "parity = space\n"); |
6dd81b45 FS |
427 | } else { |
428 | buf[5] = 2; | |
d8789b2b | 429 | dev_dbg(&port->dev, "parity = even\n"); |
6dd81b45 | 430 | } |
1da177e4 LT |
431 | } |
432 | } else { | |
433 | buf[5] = 0; | |
d8789b2b | 434 | dev_dbg(&port->dev, "parity = none\n"); |
1da177e4 LT |
435 | } |
436 | ||
372db8a7 TG |
437 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
438 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, | |
439 | 0, 0, buf, 7, 100); | |
d8789b2b | 440 | dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i); |
1da177e4 LT |
441 | |
442 | /* change control lines if we are switching to or from B0 */ | |
443 | spin_lock_irqsave(&priv->lock, flags); | |
444 | control = priv->line_control; | |
87265b45 | 445 | if (C_BAUD(tty) == B0) |
1da177e4 | 446 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
2d8f4447 | 447 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
1da177e4 LT |
448 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
449 | if (control != priv->line_control) { | |
450 | control = priv->line_control; | |
451 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 452 | pl2303_set_control_lines(port, control); |
1da177e4 LT |
453 | } else { |
454 | spin_unlock_irqrestore(&priv->lock, flags); | |
455 | } | |
372db8a7 | 456 | |
87265b45 | 457 | memset(buf, 0, 7); |
372db8a7 TG |
458 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
459 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, | |
460 | 0, 0, buf, 7, 100); | |
715cf92a | 461 | dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); |
1da177e4 | 462 | |
87265b45 | 463 | if (C_CRTSCTS(tty)) { |
8bf769eb | 464 | if (spriv->type == HX) |
eb44da0b | 465 | pl2303_vendor_write(0x0, 0x61, serial); |
1da177e4 | 466 | else |
eb44da0b | 467 | pl2303_vendor_write(0x0, 0x41, serial); |
715f9527 | 468 | } else { |
eb44da0b | 469 | pl2303_vendor_write(0x0, 0x0, serial); |
1da177e4 | 470 | } |
572d3138 TG |
471 | |
472 | kfree(buf); | |
473 | } | |
474 | ||
335f8514 AC |
475 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
476 | { | |
477 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
478 | unsigned long flags; | |
479 | u8 control; | |
480 | ||
481 | spin_lock_irqsave(&priv->lock, flags); | |
482 | /* Change DTR and RTS */ | |
483 | if (on) | |
484 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); | |
485 | else | |
486 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
487 | control = priv->line_control; | |
488 | spin_unlock_irqrestore(&priv->lock, flags); | |
f45d0a5a | 489 | pl2303_set_control_lines(port, control); |
335f8514 AC |
490 | } |
491 | ||
492 | static void pl2303_close(struct usb_serial_port *port) | |
572d3138 | 493 | { |
8b0127b2 | 494 | usb_serial_generic_close(port); |
572d3138 | 495 | usb_kill_urb(port->interrupt_in_urb); |
1da177e4 LT |
496 | } |
497 | ||
a509a7e4 | 498 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 499 | { |
1da177e4 | 500 | struct usb_serial *serial = port->serial; |
8bf769eb | 501 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
1da177e4 LT |
502 | int result; |
503 | ||
8bf769eb | 504 | if (spriv->type != HX) { |
1694899f D |
505 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
506 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
3e152505 | 507 | } else { |
1da177e4 | 508 | /* reset upstream data pipes */ |
eb44da0b SS |
509 | pl2303_vendor_write(8, 0, serial); |
510 | pl2303_vendor_write(9, 0, serial); | |
1da177e4 LT |
511 | } |
512 | ||
1da177e4 | 513 | /* Setup termios */ |
95da310e | 514 | if (tty) |
2d8f4447 | 515 | pl2303_set_termios(tty, port, NULL); |
1da177e4 | 516 | |
372db8a7 | 517 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
1da177e4 | 518 | if (result) { |
372db8a7 | 519 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
441b62c1 | 520 | " error %d\n", __func__, result); |
db6e9186 | 521 | return result; |
1da177e4 | 522 | } |
d4691c3f | 523 | |
f5230a53 | 524 | result = usb_serial_generic_open(tty, port); |
d4691c3f JH |
525 | if (result) { |
526 | usb_kill_urb(port->interrupt_in_urb); | |
527 | return result; | |
528 | } | |
529 | ||
1da177e4 LT |
530 | return 0; |
531 | } | |
532 | ||
20b9d177 | 533 | static int pl2303_tiocmset(struct tty_struct *tty, |
372db8a7 | 534 | unsigned int set, unsigned int clear) |
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 | u8 control; | |
6f1efd6c | 540 | int ret; |
6fdd8e8e | 541 | |
372db8a7 | 542 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
543 | if (set & TIOCM_RTS) |
544 | priv->line_control |= CONTROL_RTS; | |
545 | if (set & TIOCM_DTR) | |
546 | priv->line_control |= CONTROL_DTR; | |
547 | if (clear & TIOCM_RTS) | |
548 | priv->line_control &= ~CONTROL_RTS; | |
549 | if (clear & TIOCM_DTR) | |
550 | priv->line_control &= ~CONTROL_DTR; | |
551 | control = priv->line_control; | |
372db8a7 | 552 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 553 | |
5ddbb26b JH |
554 | ret = pl2303_set_control_lines(port, control); |
555 | if (ret) | |
556 | return usb_translate_errors(ret); | |
6f1efd6c | 557 | |
5ddbb26b | 558 | return 0; |
1da177e4 LT |
559 | } |
560 | ||
60b33c13 | 561 | static int pl2303_tiocmget(struct tty_struct *tty) |
1da177e4 | 562 | { |
95da310e | 563 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
564 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
565 | unsigned long flags; | |
566 | unsigned int mcr; | |
567 | unsigned int status; | |
568 | unsigned int result; | |
569 | ||
372db8a7 | 570 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 LT |
571 | mcr = priv->line_control; |
572 | status = priv->line_status; | |
372db8a7 | 573 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
574 | |
575 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) | |
576 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) | |
577 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
578 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
579 | | ((status & UART_RING) ? TIOCM_RI : 0) | |
580 | | ((status & UART_DCD) ? TIOCM_CD : 0); | |
581 | ||
d8789b2b | 582 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
1da177e4 LT |
583 | |
584 | return result; | |
585 | } | |
586 | ||
335f8514 AC |
587 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
588 | { | |
589 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
590 | if (priv->line_status & UART_DCD) | |
591 | return 1; | |
592 | return 0; | |
593 | } | |
594 | ||
824d11be | 595 | static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) |
1da177e4 | 596 | { |
824d11be | 597 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
598 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
599 | unsigned long flags; | |
600 | unsigned int prevstatus; | |
601 | unsigned int status; | |
602 | unsigned int changed; | |
603 | ||
372db8a7 | 604 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 605 | prevstatus = priv->line_status; |
372db8a7 | 606 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
607 | |
608 | while (1) { | |
6d0cad65 | 609 | interruptible_sleep_on(&port->port.delta_msr_wait); |
1da177e4 LT |
610 | /* see if a signal did it */ |
611 | if (signal_pending(current)) | |
612 | return -ERESTARTSYS; | |
372db8a7 | 613 | |
40509ca9 JH |
614 | if (port->serial->disconnected) |
615 | return -EIO; | |
616 | ||
372db8a7 | 617 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 618 | status = priv->line_status; |
372db8a7 TG |
619 | spin_unlock_irqrestore(&priv->lock, flags); |
620 | ||
3a0f43e9 | 621 | changed = prevstatus ^ status; |
372db8a7 | 622 | |
1da177e4 LT |
623 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
624 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || | |
625 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || | |
3a0f43e9 | 626 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
1da177e4 LT |
627 | return 0; |
628 | } | |
629 | prevstatus = status; | |
630 | } | |
631 | /* NOTREACHED */ | |
632 | return 0; | |
633 | } | |
634 | ||
00a0d0d6 | 635 | static int pl2303_ioctl(struct tty_struct *tty, |
372db8a7 | 636 | unsigned int cmd, unsigned long arg) |
1da177e4 | 637 | { |
67b9946d | 638 | struct serial_struct ser; |
95da310e | 639 | struct usb_serial_port *port = tty->driver_data; |
d8789b2b GKH |
640 | |
641 | dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd); | |
1da177e4 LT |
642 | |
643 | switch (cmd) { | |
67b9946d JT |
644 | case TIOCGSERIAL: |
645 | memset(&ser, 0, sizeof ser); | |
646 | ser.type = PORT_16654; | |
e5b1e206 | 647 | ser.line = port->minor; |
1143832e | 648 | ser.port = port->port_number; |
67b9946d JT |
649 | ser.baud_base = 460800; |
650 | ||
651 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) | |
652 | return -EFAULT; | |
653 | ||
654 | return 0; | |
3a0f43e9 | 655 | default: |
d8789b2b | 656 | dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd); |
3a0f43e9 | 657 | break; |
1da177e4 | 658 | } |
1da177e4 LT |
659 | return -ENOIOCTLCMD; |
660 | } | |
661 | ||
95da310e | 662 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 663 | { |
95da310e | 664 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
665 | struct usb_serial *serial = port->serial; |
666 | u16 state; | |
667 | int result; | |
668 | ||
1da177e4 LT |
669 | if (break_state == 0) |
670 | state = BREAK_OFF; | |
671 | else | |
672 | state = BREAK_ON; | |
d8789b2b | 673 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
3a0f43e9 | 674 | state == BREAK_OFF ? "off" : "on"); |
1da177e4 | 675 | |
372db8a7 TG |
676 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
677 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, | |
678 | 0, NULL, 0, 100); | |
1da177e4 | 679 | if (result) |
d8789b2b | 680 | dev_err(&port->dev, "error sending break = %d\n", result); |
1da177e4 LT |
681 | } |
682 | ||
97bb13ec FL |
683 | static void pl2303_update_line_status(struct usb_serial_port *port, |
684 | unsigned char *data, | |
685 | unsigned int actual_length) | |
686 | { | |
687 | ||
688 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d14fc1a7 | 689 | struct tty_struct *tty; |
97bb13ec FL |
690 | unsigned long flags; |
691 | u8 status_idx = UART_STATE; | |
95f209f9 | 692 | u8 length = UART_STATE + 1; |
d14fc1a7 | 693 | u8 prev_line_status; |
9c537616 | 694 | u16 idv, idp; |
97bb13ec | 695 | |
9c537616 TG |
696 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
697 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); | |
698 | ||
699 | ||
700 | if (idv == SIEMENS_VENDOR_ID) { | |
701 | if (idp == SIEMENS_PRODUCT_ID_X65 || | |
702 | idp == SIEMENS_PRODUCT_ID_SX1 || | |
703 | idp == SIEMENS_PRODUCT_ID_X75) { | |
704 | ||
705 | length = 1; | |
706 | status_idx = 0; | |
707 | } | |
97bb13ec FL |
708 | } |
709 | ||
710 | if (actual_length < length) | |
a009b75a | 711 | return; |
97bb13ec | 712 | |
3a0f43e9 | 713 | /* Save off the uart status for others to look at */ |
97bb13ec | 714 | spin_lock_irqsave(&priv->lock, flags); |
d14fc1a7 | 715 | prev_line_status = priv->line_status; |
97bb13ec FL |
716 | priv->line_status = data[status_idx]; |
717 | spin_unlock_irqrestore(&priv->lock, flags); | |
430eb0d2 JW |
718 | if (priv->line_status & UART_BREAK_ERROR) |
719 | usb_serial_handle_break(port); | |
6d0cad65 | 720 | wake_up_interruptible(&port->port.delta_msr_wait); |
d14fc1a7 LP |
721 | |
722 | tty = tty_port_tty_get(&port->port); | |
723 | if (!tty) | |
724 | return; | |
725 | if ((priv->line_status ^ prev_line_status) & UART_DCD) | |
726 | usb_serial_handle_dcd_change(port, tty, | |
727 | priv->line_status & UART_DCD); | |
728 | tty_kref_put(tty); | |
97bb13ec | 729 | } |
1da177e4 | 730 | |
7d12e780 | 731 | static void pl2303_read_int_callback(struct urb *urb) |
1da177e4 | 732 | { |
cdc97792 | 733 | struct usb_serial_port *port = urb->context; |
1da177e4 | 734 | unsigned char *data = urb->transfer_buffer; |
97bb13ec | 735 | unsigned int actual_length = urb->actual_length; |
461d696a GKH |
736 | int status = urb->status; |
737 | int retval; | |
1da177e4 | 738 | |
461d696a | 739 | switch (status) { |
1da177e4 LT |
740 | case 0: |
741 | /* success */ | |
742 | break; | |
743 | case -ECONNRESET: | |
744 | case -ENOENT: | |
745 | case -ESHUTDOWN: | |
746 | /* this urb is terminated, clean up */ | |
d8789b2b GKH |
747 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
748 | __func__, status); | |
1da177e4 LT |
749 | return; |
750 | default: | |
d8789b2b GKH |
751 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
752 | __func__, status); | |
1da177e4 LT |
753 | goto exit; |
754 | } | |
755 | ||
59d33f2f | 756 | usb_serial_debug_data(&port->dev, __func__, |
372db8a7 TG |
757 | urb->actual_length, urb->transfer_buffer); |
758 | ||
97bb13ec | 759 | pl2303_update_line_status(port, data, actual_length); |
1da177e4 | 760 | |
1da177e4 | 761 | exit: |
461d696a GKH |
762 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
763 | if (retval) | |
d8789b2b | 764 | dev_err(&port->dev, |
372db8a7 | 765 | "%s - usb_submit_urb failed with result %d\n", |
441b62c1 | 766 | __func__, retval); |
1da177e4 LT |
767 | } |
768 | ||
f08e07ac | 769 | static void pl2303_process_read_urb(struct urb *urb) |
d4fc4a7b | 770 | { |
f08e07ac JH |
771 | struct usb_serial_port *port = urb->context; |
772 | struct pl2303_private *priv = usb_get_serial_port_data(port); | |
d4fc4a7b | 773 | unsigned char *data = urb->transfer_buffer; |
d4fc4a7b | 774 | char tty_flag = TTY_NORMAL; |
f08e07ac JH |
775 | unsigned long flags; |
776 | u8 line_status; | |
777 | int i; | |
778 | ||
779 | /* update line status */ | |
780 | spin_lock_irqsave(&priv->lock, flags); | |
781 | line_status = priv->line_status; | |
782 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
783 | spin_unlock_irqrestore(&priv->lock, flags); | |
6d0cad65 | 784 | wake_up_interruptible(&port->port.delta_msr_wait); |
f08e07ac JH |
785 | |
786 | if (!urb->actual_length) | |
787 | return; | |
788 | ||
d4fc4a7b AC |
789 | /* break takes precedence over parity, */ |
790 | /* which takes precedence over framing errors */ | |
791 | if (line_status & UART_BREAK_ERROR) | |
792 | tty_flag = TTY_BREAK; | |
793 | else if (line_status & UART_PARITY_ERROR) | |
794 | tty_flag = TTY_PARITY; | |
795 | else if (line_status & UART_FRAME_ERROR) | |
796 | tty_flag = TTY_FRAME; | |
d4fc4a7b | 797 | |
3ba19fe3 JH |
798 | if (tty_flag != TTY_NORMAL) |
799 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, | |
800 | tty_flag); | |
d4fc4a7b AC |
801 | /* overrun is special, not associated with a char */ |
802 | if (line_status & UART_OVERRUN_ERROR) | |
92a19f9c | 803 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
9388e2e7 | 804 | |
d45cc8df | 805 | if (port->port.console && port->sysrq) { |
d4fc4a7b | 806 | for (i = 0; i < urb->actual_length; ++i) |
6ee9f4b4 | 807 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
92a19f9c JS |
808 | tty_insert_flip_char(&port->port, data[i], |
809 | tty_flag); | |
d45cc8df | 810 | } else { |
2f693357 | 811 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
d45cc8df | 812 | urb->actual_length); |
9388e2e7 | 813 | } |
1da177e4 | 814 | |
2e124b4a | 815 | tty_flip_buffer_push(&port->port); |
1da177e4 LT |
816 | } |
817 | ||
572d3138 TG |
818 | /* All of the device info needed for the PL2303 SIO serial converter */ |
819 | static struct usb_serial_driver pl2303_device = { | |
820 | .driver = { | |
821 | .owner = THIS_MODULE, | |
822 | .name = "pl2303", | |
823 | }, | |
824 | .id_table = id_table, | |
572d3138 | 825 | .num_ports = 1, |
7919c2fd | 826 | .bulk_in_size = 256, |
3efeaff6 | 827 | .bulk_out_size = 256, |
572d3138 TG |
828 | .open = pl2303_open, |
829 | .close = pl2303_close, | |
335f8514 AC |
830 | .dtr_rts = pl2303_dtr_rts, |
831 | .carrier_raised = pl2303_carrier_raised, | |
572d3138 TG |
832 | .ioctl = pl2303_ioctl, |
833 | .break_ctl = pl2303_break_ctl, | |
834 | .set_termios = pl2303_set_termios, | |
835 | .tiocmget = pl2303_tiocmget, | |
836 | .tiocmset = pl2303_tiocmset, | |
824d11be | 837 | .tiocmiwait = pl2303_tiocmiwait, |
f08e07ac | 838 | .process_read_urb = pl2303_process_read_urb, |
572d3138 | 839 | .read_int_callback = pl2303_read_int_callback, |
572d3138 | 840 | .attach = pl2303_startup, |
f9c99bb8 | 841 | .release = pl2303_release, |
8bf769eb JH |
842 | .port_probe = pl2303_port_probe, |
843 | .port_remove = pl2303_port_remove, | |
572d3138 | 844 | }; |
1da177e4 | 845 | |
f667ddad AS |
846 | static struct usb_serial_driver * const serial_drivers[] = { |
847 | &pl2303_device, NULL | |
848 | }; | |
849 | ||
68e24113 | 850 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 LT |
851 | |
852 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 853 | MODULE_LICENSE("GPL"); |